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Sample records for boedeker ole norden

  1. Udnyt Nordens Digitale Forspring

    DEFF Research Database (Denmark)

    Sørensen, Birgitte Holm; Levinsen, Karin

    2013-01-01

    Nordens børn og unge er hjemmevante i den digitale verden. Danske børn har i høj grad adgang til internet i deres hverdag, og i Danmark og i Sverige finder vi de yngste internetbrugere. En svensk undersøgelse fra 2010 viser, at børnene er fire år i gennemsnit, når de har deres internetdebut. På...

  2. On Kähler–Norden Manifolds-Erratum

    Indian Academy of Sciences (India)

    M Iscan; A A Salimov

    2009-02-01

    This paper is concerned with the problem of the geometry of Norden manifolds. Some properties of Riemannian curvature tensors and curvature scalars of Kähler–Norden manifolds using the theory of Tachibana operators is presented.

  3. Almost complex connections on almost complex manifolds with Norden metric

    OpenAIRE

    Teofilova, Marta

    2011-01-01

    A four-parametric family of linear connections preserving the almost complex structure is defined on an almost complex manifold with Norden metric. Necessary and sufficient conditions for these connections to be natural are obtained. A two-parametric family of complex connections is studied on a conformal K\\"{a}hler manifold with Norden metric. The curvature tensors of these connections are proved to coincide.

  4. Tracheal intubation in patients with anticipated difficult airway using Boedeker intubation forceps and McGrath videolaryngoscope

    DEFF Research Database (Denmark)

    Strøm, C; Barnung, S; Kristensen, M S

    2015-01-01

    Videolaryngoscope (MVL) in patients with predictors for difficult intubation. METHODS: The study was conducted at the Department of Anaesthesia, Copenhagen University Hospital from September to December 2013. Patients with one or more predictors of difficult intubation scheduled for general anaesthesia were...... by using a styletted tube. CONCLUSION(S): Most patients with anticipated difficult intubation can be successfully intubated with Boedeker intubation forceps and MVL. However, endotracheal tube placement failed in 3/25 patients despite a good laryngeal view.......BACKGROUND: Videolaryngoscopes with sharp angulated blades improve the view of the vocal cords but this does not necessarily result in higher success rates of intubation The aim of this study was to evaluate the efficacy of using Boedeker intubation forceps in conjunction with McGrath Series 5...

  5. Tracheal intubation in patients with anticipated difficult airway using Boedeker intubation forceps and McGrath videolaryngoscope.

    Science.gov (United States)

    Strøm, C; Barnung, S; Kristensen, M S; Bøttger, M; Tvede, M F; Rasmussen, L S

    2015-10-01

    Videolaryngoscopes with sharp angulated blades improve the view of the vocal cords but this does not necessarily result in higher success rates of intubation The aim of this study was to evaluate the efficacy of using Boedeker intubation forceps in conjunction with McGrath Series 5 Videolaryngoscope (MVL) in patients with predictors for difficult intubation. The study was conducted at the Department of Anaesthesia, Copenhagen University Hospital from September to December 2013. Patients with one or more predictors of difficult intubation scheduled for general anaesthesia were assessed for eligibility. Patients were intubated using Boedeker intubation forceps and MVL. The primary endpoint was time to intubation. The secondary endpoints were intubation success rate, number of intubation attempts, intubation conditions and post-operative hoarseness. Thirty-three patients were assessed for eligibility, and 25 patients were included in the study with a median SARI score of 3 (IQR 3-4). Twenty-two (88%, 95% confidence interval [74-100%]) of the patients were successfully intubated by the method with a median time to intubation of 115 s (IQR 78-247). Steering and advancement of the tube were reported as acceptable in 21 (84%) and 22 cases (88%), respectively, and excellent in 10 cases (45%) for both measures. Ten cases (40%) were intubated on the first attempt. There were three cases (12%) of failed intubation; in these cases, successful intubation was obtained by using a styletted tube. Most patients with anticipated difficult intubation can be successfully intubated with Boedeker intubation forceps and MVL. However, endotracheal tube placement failed in 3/25 patients despite a good laryngeal view. © 2015 The Acta Anaesthesiologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

  6. OLED area illumination source

    Science.gov (United States)

    Foust, Donald Franklin; Duggal, Anil Raj; Shiang, Joseph John; Nealon, William Francis; Bortscheller, Jacob Charles

    2008-03-25

    The present invention relates to an area illumination light source comprising a plurality of individual OLED panels. The individual OLED panels are configured in a physically modular fashion. Each OLED panel comprising a plurality of OLED devices. Each OLED panel comprises a first electrode and a second electrode such that the power being supplied to each individual OLED panel may be varied independently. A power supply unit capable of delivering varying levels of voltage simultaneously to the first and second electrodes of each of the individual OLED panels is also provided. The area illumination light source also comprises a mount within which the OLED panels are arrayed.

  7. OLED displays and lighting

    CERN Document Server

    Koden, Mitsuhiro

    2017-01-01

    Organic light-emitting diodes (OLEDs) have emerged as the leading technology for the new display and lighting market. OLEDs are solid-state devices composed of thin films of organic molecules that create light with the application of electricity. OLEDs can provide brighter, crisper displays on electronic devices and use less power than conventional light-emitting diodes (LEDs) or liquid crystal displays (LCDs) used today. This book covers both the fundamentals and practical applications of flat and flexible OLEDs.

  8. Epidemiologisk forskning om uførepensjon i Norden

    Directory of Open Access Journals (Sweden)

    Johan Håkon Bjørngaard

    2010-01-01

    Full Text Available En relativ stor andel av befolkningen i yrkesaktiv alder i de nordiske landene mottar uførepensjon, og i Norge er det en klar tendens til økning. Parallelt med dette har interessen for forskning rundt uførepensjon som fenomen økt. Vi har i denne studien beskrevet den epidemiologiske forskningen om uførepensjon i Norden. I en systematisk litteraturgjennomgang fant vi 118 aktuelle artikler. Alle de nordiske landene er godt representert. Kohortstudier med uførepensjon som endepunkt utgjorde hovedvekten av materialet, hvor 67 var populasjonsbaserte mens 29 tok utgangspunkt i selekterte pasientpopulasjoner. I alt seks kohortstudier benyttet uførepensjon som eksponering. Vi fant videre syv kasus-kontrollstudier og ni forsøk. Det er betydelig dokumentasjon på at ulike sykdommer og helseplager er assosiert med økt risiko for uførhet, i tillegg til at sosioøkonomiske og arbeidsrelaterte forhold er av betydning. Gjennomgangen viser at den epidemiologiske forskningen for det meste har rettet blikket mot individuelle årsaker til uførepensjonering. Selv om denne forskningen er viktig, kan den neppe forklare økningen vi har sett i det siste tiåret. Den videre forskningen bør utforske nærmere hvordan individuell sårbarhet ender i utstøtelse fra arbeidslivet. Med tanke på den omfattende forskningen om årsaker på dette feltet, bør man også i større grad gjennomføre forsøk for å bedre utsatte gruppers arbeidsdeltakelse.Bjørngaard JH, Krokstad S, Johnsen R, Karlsen AO, Pape K, Støver M, Sund E, Westin S. Epidemiological research on disability benefits in the Nordic countries. Nor J Epidemiol 2009; 19 (2: 103-114 ENGLISH SUMMARYA substantial part of the workforce in the Nordic countries receives a disability benefit, and in Norway this beneficiary rate is growing. As a result, disability benefit has been the subject of new interest and research. In this study we have reviewed the epidemiological research on disability benefit in the

  9. Release of OLe peanut

    Science.gov (United States)

    OLe is a high oleic Spanish-type peanut that has excellent yield and enhanced Sclerotinia blight and pod rot resistance when compared to other high oleic Spanish cultivars. The purpose for releasing OLe is to provide peanut producers with a true Spanish peanut that is high oleic and has enhanced yi...

  10. High Brightness OLED Lighting

    Energy Technology Data Exchange (ETDEWEB)

    Spindler, Jeffrey [OLEDWorks LLC; Kondakova, Marina [OLEDWorks LLC; Boroson, Michael [OLEDWorks LLC; Hamer, John [OLEDWorks LLC

    2016-05-25

    In this work we describe the technology developments behind our current and future generations of high brightness OLED lighting panels. We have developed white and amber OLEDs with excellent performance based on the stacking approach. Current products achieve 40-60 lm/W, while future developments focus on achieving 80 lm/W or higher.

  11. Groundwater Surface Trends at Van Norden Meadow, California, from Ground Penetrating Radar Profiles

    Science.gov (United States)

    Tadrick, N. I.; Blacic, T. M.; Yarnell, S. M.

    2014-12-01

    Van Norden meadow in the Donner Summit area west of Lake Tahoe is one of the largest sub-alpine meadows in the Sierra Nevada mountain range. As natural water retention basins, meadows attenuate floods, improve water quality and support vegetation that stabilizes stream banks and promotes high biodiversity. Like most meadows in the Sierras however, over-grazing, road-building, and development has resulted in localized stream incision, degradation, and partial conversion from wet to dry conditions in Van Norden. Additionally, a small dam at the base of the meadow has partially flooded the lower meadow creating reservoir conditions. Privately owned since the late 1800s, Van Norden was recently purchased by a local land trust to prevent further development and return the area to public ownership. Restoration of the natural meadow conditions will involve notching the dam in 2016 to reduce currently impounded water volumes from 250 to less than 50 acre-feet. To monitor the effects of notching the dam on the upstream meadow conditions, better understanding of the surface and groundwater hydrology both pre- and post-restoration is required. We surveyed the meadow in summer 2014 with ground penetrating radar (GPR) to map the groundwater surface prior to restoration activities using a 270MHz antenna to obtain a suite of longitudinal and transverse transects. Groundwater level within the meadow was assessed using both piezometer readings and sweeps of the GPR antenna. Seventeen piezometers were added this year to the 13 already in place to monitor temporal changes in the groundwater surface, while the GPR profiles provided information about lateral variations. Our results provide an estimate of the groundwater depth variations across the upper portion of the meadow before notching. We plan to return in 2015 to collect GPR profiles during wetter conditions, which will provide a more complete assessment of the pre-notching groundwater hydrology.

  12. OLEDS FOR GENERAL LIGHTING

    Energy Technology Data Exchange (ETDEWEB)

    Anil Duggal; Don Foust; Chris Heller; Bill Nealon; Larry Turner; Joe Shiang; Nick Baynes; Tim Butler; Nalin Patel

    2004-02-29

    The goal of this program was to reduce the long term technical risks that were keeping the lighting industry from embracing and developing organic light-emitting diode (OLED) technology for general illumination. The specific goal was to develop OLEDs for lighting to the point where it was possible to demonstrate a large area white light panel with brightness and light quality comparable to a fluorescence source and with an efficacy comparable to that of an incandescent source. it was recognized that achieving this would require significant advances in three area: (1) the improvement of white light quality for illumination, (2) the improvement of OLED energy efficiency at high brightness, and (3) the development of cost-effective large area fabrication techniques. The program was organized such that, each year, a ''deliverable'' device would be fabricated which demonstrated progress in one or more of the three critical research areas. In the first year (2001), effort concentrated on developing an OLED capable of generating high illumination-quality white light. Ultimately, a down-conversion method where a blue OLED was coupled with various down-conversion layers was chosen. Various color and scattering models were developed to aid in material development and device optimization. The first year utilized this approach to deliver a 1 inch x 1 inch OLED with higher illumination-quality than available fluorescent sources. A picture of this device is shown and performance metrics are listed. To their knowledge, this was the first demonstration of true illumination-quality light from an OLED. During the second year, effort concentrated on developing a scalable approach to large area devices. A novel device architecture consisting of dividing the device area into smaller elements that are monolithically connected in series was developed. In the course of this development, it was realized that, in addition to being scalable, this approach made the device

  13. A look inside white OLEDs

    Science.gov (United States)

    Bobbert, Peter; Coehoorn, Reinder

    2013-09-01

    White organic light-emitting diodes (OLEDs) for lighting are finding their way to the market. These OLEDs have organic layers only a few nanometres thick. Improving their efficiency and stability requires nanometre-precision information about where the light is emitted. Reconstruction of the emission profile from the measured emission and molecular-scale modelling provide a unique nanoscale look inside white OLEDs.

  14. OLED Lighting Products: Capabilities, Challenges, Potential

    Energy Technology Data Exchange (ETDEWEB)

    Miller, N. J. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Leon, F. A. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2016-05-31

    A report that focuses on the potential for architectural OLED lighting – describing currently available OLED products as well as promised improvements, and addressing the technology and market hurdles that have thus far prevented wider use of OLEDs.

  15. Holistic processes and practices for clean energy in strengthening bioeconomic strategies (INDO-NORDEN)

    Science.gov (United States)

    Shurpali, Narasinha J.; Parameswaran, Binod; Raud, Merlin; Pumpanen, Jukka; Sippula, Olli; Jokiniemi, Jorma; Lusotarinen, Sari; Virkajarvi, Perttu

    2017-04-01

    We are proud to introduce the project, INDO-NORDEN, funded in response to the Science and Technology call of the INNO INDIGO Partnership Program (IPP) on Biobased Energy. The project is scheduled to begin from April 2017. The proposed project aims to address both subtopics of the call, Biofuels and From Waste to Energy with research partners from Finland (coordinating unit), India and Estonia. The EU and India share common objectives in enhancing energy security, promoting energy efficiency and energy safety, and the pursuit of sustainable development of clean and renewable energy source. The main objective of INDO-NORDEN is to investigate, evaluate and develop efficient processes and land use practices of transforming forest and agricultural biomass, agricultural residues and farm waste into clean fuels (solid, liquid or gas), by thermochemical or biochemical conversions. Forestry and agriculture are the major bioenergy sectors in Finland. Intensive forest harvesting techniques are being used in Finland to enhance the share of bioenergy in the total energy consumption in the future. However, there are no clear indications how environmentally safe are these intensive forestry practices in Finland. We address this issue through field studies addressing the climate impacts on the ecosystem carbon balance and detailed life cycle assessment. The role of agriculture in Finland is expected to grow significantly in the years to come. Here, we follow a holistic field experimental approach addressing several major issues relevant to Nordic agriculture under changing climatic conditions - soil nutrient management, recycling of nutrients, farm and agricultural waste management, biogas production potentials, greenhouse gas inventorying and entire production chain analysis. There is a considerable potential for process integration in the biofuel sector. This project plans to develop biofuel production processes adopted in Estonia and India with a major aim of enhancing biofuel

  16. ORGANIC LIGHT EMITTING DIODE (OLED

    Directory of Open Access Journals (Sweden)

    Aririguzo Marvis Ijeaku

    2015-09-01

    Full Text Available An Organic Light Emitting Diode (OLED is a device composed of an organic layer that emits lights in response to an electrical current. Organic light emitting diodes have advanced tremendously over the past decades. The different manufacturing processes of the OLED itself to several advantages over flat panel displays made with LCD technology which includes its light weight and flexible plastic substrates, wider viewing angles, improved brightness, better power efficiency and quicker response time. However, its drawbacks include shorter life span, poor color balance, poor outdoor performance, susceptibility to water damage etc.The application of OLEDs in electronics is on the increase on daily basics from cameras to cell phones to OLED televisions, etc. Although OLEDs provides prospects for thinner, smarter, lighter and ultraflexible electronics displays, however, due to high cost of manufacturing, it is not yet widely used.

  17. OLED with improved light outcoupling

    Energy Technology Data Exchange (ETDEWEB)

    Forrest, Stephen; Sun, Yiru

    2016-11-29

    An OLED may include regions of a material having a refractive index less than that of the substrate, or of the organic region, allowing for emitted light in a waveguide mode to be extracted into air. These regions can be placed adjacent to the emissive regions of an OLED in a direction parallel to the electrodes. The substrate may also be given a nonstandard shape to further improve the conversion of waveguide mode and/or glass mode light to air mode. The outcoupling efficiency of such a device may be up to two to three times the efficiency of a standard OLED. Methods for fabricating such a transparent or top-emitting OLED is also provided.

  18. Maailmaparandajad / Ole Ry, Susanne Andres

    Index Scriptorium Estoniae

    Ry, Ole

    2012-01-01

    Terapeudid Ole Ry ja Susanne Andres räägivad Dr David Berceli loodud TRE (Tension & Trauma Releasing Exercises) harjutuste kasutamise kogemusest erinevate psüühiliste traumade ja pingetega klientide tervise parandamisel

  19. Maailmaparandajad / Ole Ry, Susanne Andres

    Index Scriptorium Estoniae

    Ry, Ole

    2012-01-01

    Terapeudid Ole Ry ja Susanne Andres räägivad Dr David Berceli loodud TRE (Tension & Trauma Releasing Exercises) harjutuste kasutamise kogemusest erinevate psüühiliste traumade ja pingetega klientide tervise parandamisel

  20. OLED microdisplays technology and applications

    CERN Document Server

    Templier, François

    2014-01-01

    Microdisplays are displays requiring optical magnification and OLEDs (Organic Light-Emitting Diode) are self-emitting displays where each pixel includes a LED made of organic material, in general composed of small-molecule organic material. This title reviews in detail how OLED microdisplays are made as well as how they are used. All aspects from theory to application will be addressed: basic principles, display design, display fabrication, operation and performances, present and future applications. The book will be useful to anyone interested in this rapidly developing field, such as studen

  1. New Nordic Exceptionalism: Jeuno JE Kim and Ewa Einhorn’s 'The United Nations of Norden' and Other Realist Utopias

    DEFF Research Database (Denmark)

    Danbolt, Mathias

    2016-01-01

    that have been central to the debates on the branding of Nordicity over the last decades: on the one hand, the discourse of “Nordic exceptionalism,” that since the 1960s has been central to the promotion of a Nordic political, socio-economic, and internationalist “third way” model, and, on the other hand......, the discourse on the “New Nordic,” that emerged out of the New Nordic Food-movement in the early 2000s, and which has given art and culture a privileged role in the international re-fashioning of the Nordic brand. Through an analysis of Kim and Einhorn’s United Nations of Norden (UNN)-performance, the article...

  2. Full-color OLED on silicon microdisplay

    Science.gov (United States)

    Ghosh, Amalkumar P.

    2002-02-01

    eMagin has developed numerous enhancements to organic light emitting diode (OLED) technology, including a unique, up- emitting structure for OLED-on-silicon microdisplay devices. Recently, eMagin has fabricated full color SVGA+ resolution OLED microdisplays on silicon, with over 1.5 million color elements. The display is based on white light emission from OLED followed by LCD-type red, green and blue color filters. The color filters are patterned directly on OLED devices following suitable thin film encapsulation and the drive circuits are built directly on single crystal silicon. The resultant color OLED technology, with hits high efficiency, high brightness, and low power consumption, is ideally suited for near to the eye applications such as wearable PCS, wireless Internet applications and mobile phone, portable DVD viewers, digital cameras and other emerging applications.

  3. Feeling blue? Blue phosphors for OLEDs

    Directory of Open Access Journals (Sweden)

    Hungshin Fu

    2011-10-01

    Full Text Available Research on organic light emitting diodes (OLEDs has been revitalized, partly due to the debut of the OLED TV by SONY in 2008. While there is still plenty of room for improvement in efficiency, cost-effectiveness and longevity, it is timely to report on the advances of light emitting materials, the core of OLEDs, and their future perspectives. The focus of this account is primarily to chronicle the blue phosphors developed in our laboratory. Special attention is paid to the design strategy, synthetic novelty, and their OLED performance. The report also underscores the importance of the interplay between chemistry and photophysics en route to true-blue phosphors.

  4. New Nordic Exceptionalism: Jeuno JE Kim and Ewa Einhorn's The United Nations of Norden and other realist utopias

    Directory of Open Access Journals (Sweden)

    Mathias Danbolt

    2016-11-01

    Full Text Available At the 2009 Nordic Culture Forum summit in Berlin that centered on the profiling and branding of the Nordic region in a globalized world, one presenter stood out from the crowd. The lobbyist Annika Sigurdardottir delivered a speech that called for the establishment of “The United Nations of Norden”: A Nordic union that would gather the nations and restore Norden's role as the “moral superpower of the world.” Sigurdardottir's presentation generated such a heated debate that the organizers had to intervene and reveal that the speech was a performance made by the artists Jeuno JE Kim and Ewa Einhorn. This article takes Kim and Einhorn's intervention as a starting point for a critical discussion of the history and politics of Nordic image-building. The article suggests that the reason Kim and Einhorn's speech passed as a serious proposal was due to its meticulous mimicking of two discursive formations that have been central to the debates on the branding of Nordicity over the last decades: on the one hand, the discourse of “Nordic exceptionalism,” that since the 1960s has been central to the promotion of a Nordic political, socio-economic, and internationalist “third way” model, and, on the other hand, the discourse on the “New Nordic,” that emerged out of the New Nordic Food-movement in the early 2000s, and which has given art and culture a privileged role in the international re-fashioning of the Nordic brand. Through an analysis of Kim and Einhorn's United Nations of Norden (UNN-performance, the article examines the historical development and ideological underpinnings of the image of Nordic unity at play in the discourses of Nordic exceptionalism and the New Nordic. By focusing on how the UNN-project puts pressure on the role of utopian imaginaries in the construction of Nordic self-images, the article describes the emergence of a discursive framework of New Nordic Exceptionalism.

  5. High Performance OLED Panel and Luminaire

    Energy Technology Data Exchange (ETDEWEB)

    Spindler, Jeffrey [OLEDWorks LLC, Rochester, NY (United States)

    2017-02-20

    In this project, OLEDWorks developed and demonstrated the technology required to produce OLED lighting panels with high energy efficiency and excellent light quality. OLED panels developed in this program produce high quality warm white light with CRI greater than 85 and efficacy up to 80 lumens per watt (LPW). An OLED luminaire employing 24 of the high performance panels produces practical levels of illumination for general lighting, with a flux of over 2200 lumens at 60 LPW. This is a significant advance in the state of the art for OLED solid-state lighting (SSL), which is expected to be a complementary light source to the more advanced LED SSL technology that is rapidly replacing all other traditional forms of lighting.

  6. CALiPER Report 24: OLED Luminaires

    Energy Technology Data Exchange (ETDEWEB)

    Miller, N. J. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Leon, F. A. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Davis, J. L. [RTI International, Research Triangle Park, NC (United States)

    2017-08-01

    This report documents an initial investigation of OLED luminaires and summarizes the key features of those products. In addition to photometric testing of four commercial products in independent laboratories, PNNL examined many of the products through teardown testing (disassemblies to identify parts and functionality) in PNNL laboratories. Results of these tests as well as results of stress testing of several OLED luminaires at RTI International have been included.

  7. Advanced modelling of optoelectronic characteristics of OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Nitsche, Robert; Kurpiers-Guenther, Matthias [sim4tec GmbH, Schoenfelder Landstr. 8, 01328 Dresden (Germany); Thomschke, Michael; Schober, Matthias; Leo, Karl [Insitut fuer Angewandte Photophysik, TU Dresden, George-Baehr-Str. 1, 01069 Dresden (Germany)

    2008-07-01

    A rapid development of highly efficient OLED devices could be observed during the last years. The main work was carried out using experimental trial and error methods which are cost intensive and time consuming. A better approach is to conduct numerical simulations for device design and optimization beforehand, thus reducing the experimental work significantly and gaining a deep understanding of the underlying device physics. Here, we report on simulation results of multilayer single carrier devices and multilayer fluorescent and phosphorescent OLEDs including doped transport and emitter layers, using the integral OLED device simulator SimOLED. We first give an overview on optical and electrical modelling of OLEDs and discuss methodologies to obtain correct input parameters from fitting experimental results. Special focus is paid to the ambiguity of the extracted parameters to be used for further device modelling. The simulation results are compared to experimental data and conclusions are drawn concerning the distribution of electric field, recombination rates and exciton densities as well as charge carrier balance in the devices. Finally, we propose a generalized scheme for performing OLED simulations with predictive character.

  8. OLED microdisplay design and materials

    Science.gov (United States)

    Wacyk, Ihor; Prache, Olivier; Ali, Tariq; Khayrullin, Ilyas; Ghosh, Amalkumar

    2010-04-01

    AMOLED microdisplays from eMagin Corporation are finding growing acceptance within the military display market as a result of their excellent power efficiency, wide operating temperature range, small size and weight, good system flexibility, and ease of use. The latest designs have also demonstrated improved optical performance including better uniformity, contrast, MTF, and color gamut. eMagin's largest format display is currently the SXGA design, which includes features such as a 30-bit wide RGB digital interface, automatic luminance regulation from -45 to +70°C, variable gamma control, and a dynamic range exceeding 50:000 to 1. This paper will highlight the benefits of eMagin's latest microdisplay designs and review the roadmap for next generation devices. The ongoing development of reduced size pixels and larger format displays (up to WUXGA) as well as new OLED device architecture (e.g. high-brightness yellow) will be discussed. Approaches being explored for improved performance in next generation designs such as lowpower serial interfaces, high frame rate operation, and new operational modes for reduction of motion artifacts will also be described. These developments should continue to enhance the appeal of AMOLED microdisplays for a broad spectrum of near-to-the-eye applications such as night vision, simulation and training, situational awareness, augmented reality, medical imaging, and mobile video entertainment and gaming.

  9. Contacts de créoles, créoles en contact

    OpenAIRE

    Goury, Laurence; Léglise, Isabelle

    2005-01-01

    International audience; Face à la diversité d'approches et au foisonnement de travaux dans le domaine du contact de langues, l'étude des créoles en contact avec d'autres langues – créoles ou non – semble quelque peu en retrait, se cantonnant essentiellement à l'étude de leur genèse. Ce numéro de revue tente de remédier à la faible présence de travaux sur les contacts entre langues créoles d'une part (d'où le titre : contacts de créoles) et entre des langues créoles et diverses langues dans le...

  10. Efficient organic light emitting-diodes (OLEDs)

    CERN Document Server

    Chang, Yi-Lu

    2015-01-01

    Following two decades of intense research globally, the organic light-emitting diode (OLED) has steadily emerged as the ultimate display technology of choice for the coming decades. Portable active matrix OLED displays have already become prevalent, and even large-sized ultra-high definition 4K TVs are being mass-produced. More exotic applications such as wearable displays have been commercialized recently. With the burgeoning success in displays, researchers are actively bringing the technology forward into the exciting solid-state lighting market. This book presents the knowledge needed for

  11. Legender om Norden

    DEFF Research Database (Denmark)

    Jensen-Rix, Robert William

    2015-01-01

    Gennem Middelalderen og indtil nyere tid har Skandinavien altid fremstået som et land i det fjerne - et udkants-Europa, om man vil. Hvis Skandinavien blev omtalt, var det ofte i forbindelse med de brutale vikingetogter der hærgede kontinentet og ikke mindst England... Weekendavisen, Sektion: 4, S...

  12. Maal ei ole surnud / Jaan Elken

    Index Scriptorium Estoniae

    Elken, Jaan, 1954-

    2001-01-01

    Põhjamaade ja Baltikumi I maalibiennaal Rootsis Väsbys. Biennaali Rootsi-poolne kuraator ja kujundaja Ricardo Donoso, Eesti komplekti koostas Mare Pedanik. Eksponeeritud on Tiit Pääsukese, Ado Lille, Andres Toltsi, Kaido Ole, Jaan Elkeni tööd. Näituse ülevaade, eraldi peatutud Leedu ja Läti kunstnikel

  13. Assessment of OLED displays for vision research.

    Science.gov (United States)

    Cooper, Emily A; Jiang, Haomiao; Vildavski, Vladimir; Farrell, Joyce E; Norcia, Anthony M

    2013-10-23

    Vision researchers rely on visual display technology for the presentation of stimuli to human and nonhuman observers. Verifying that the desired and displayed visual patterns match along dimensions such as luminance, spectrum, and spatial and temporal frequency is an essential part of developing controlled experiments. With cathode-ray tubes (CRTs) becoming virtually unavailable on the commercial market, it is useful to determine the characteristics of newly available displays based on organic light emitting diode (OLED) panels to determine how well they may serve to produce visual stimuli. This report describes a series of measurements summarizing the properties of images displayed on two commercially available OLED displays: the Sony Trimaster EL BVM-F250 and PVM-2541. The results show that the OLED displays have large contrast ratios, wide color gamuts, and precise, well-behaved temporal responses. Correct adjustment of the settings on both models produced luminance nonlinearities that were well predicted by a power function ("gamma correction"). Both displays have adjustable pixel independence and can be set to have little to no spatial pixel interactions. OLED displays appear to be a suitable, or even preferable, option for many vision research applications.

  14. Maal ei ole surnud / Jaan Elken

    Index Scriptorium Estoniae

    Elken, Jaan, 1954-

    2001-01-01

    Põhjamaade ja Baltikumi I maalibiennaal Rootsis Väsbys. Biennaali Rootsi-poolne kuraator ja kujundaja Ricardo Donoso, Eesti komplekti koostas Mare Pedanik. Eksponeeritud on Tiit Pääsukese, Ado Lille, Andres Toltsi, Kaido Ole, Jaan Elkeni tööd. Näituse ülevaade, eraldi peatutud Leedu ja Läti kunstnikel

  15. Designing High Efficient Solar Powered OLED Lighting Systems

    DEFF Research Database (Denmark)

    Ploug, Rasmus Overgaard; Poulsen, Peter Behrensdorff; Thorsteinsson, Sune

    2016-01-01

    for the 10 Wp version. Furthermore, we present measurements of state-of-the-art commercial available OLED with regards to the luminous flux, luminous efficacy, luminance homogeneity, temperature dependency and IV characteristic of the OLED panels. In addition, solar powered OLED product concepts are proposed.......OLEDs used in solar powered lighting applications is a market of the future. This paper reports the development of electronic Three-Port-Converters for PV OLED product integration in the low-power area respectively for 1-10 Wp and 10-50 Wp with a peak efficiency of 97% at 1.8 W of PV power...

  16. Designing High Efficient Solar Powered OLED Lighting Systems

    DEFF Research Database (Denmark)

    Ploug, Rasmus Overgaard; Poulsen, Peter Behrensdorff; Thorsteinsson, Sune

    2016-01-01

    OLEDs used in solar powered lighting applications is a market of the future. This paper reports the development of electronic Three-Port-Converters for PV OLED product integration in the low-power area respectively for 1-10 Wp and 10-50 Wp with a peak efficiency of 97% at 1.8 W of PV power...... for the 10 Wp version. Furthermore, we present measurements of state-of-the-art commercial available OLED with regards to the luminous flux, luminous efficacy, luminance homogeneity, temperature dependency and IV characteristic of the OLED panels. In addition, solar powered OLED product concepts are proposed....

  17. Highly efficient fully transparent inverted OLEDs

    Science.gov (United States)

    Meyer, J.; Winkler, T.; Hamwi, S.; Schmale, S.; Kröger, M.; Görrn, P.; Johannes, H.-H.; Riedl, T.; Lang, E.; Becker, D.; Dobbertin, T.; Kowalsky, W.

    2007-09-01

    One of the unique selling propositions of OLEDs is their potential to realize highly transparent devices over the visible spectrum. This is because organic semiconductors provide a large Stokes-Shift and low intrinsic absorption losses. Hence, new areas of applications for displays and ambient lighting become accessible, for instance, the integration of OLEDs into the windshield or the ceiling of automobiles. The main challenge in the realization of fully transparent devices is the deposition of the top electrode. ITO is commonly used as transparent bottom anode in a conventional OLED. To obtain uniform light emission over the entire viewing angle and a low series resistance, a TCO such as ITO is desirable as top contact as well. However, sputter deposition of ITO on top of organic layers causes damage induced by high energetic particles and UV radiation. We have found an efficient process to protect the organic layers against the ITO rf magnetron deposition process of ITO for an inverted OLED (IOLED). The inverted structure allows the integration of OLEDs in more powerful n-channel transistors used in active matrix backplanes. Employing the green electrophosphorescent material Ir(ppy) 3 lead to IOLED with a current efficiency of 50 cd/A and power efficiency of 24 lm/W at 100 cd/m2. The average transmittance exceeds 80 % in the visible region. The on-set voltage for light emission is lower than 3 V. In addition, by vertical stacking we achieved a very high current efficiency of more than 70 cd/A for transparent IOLED.

  18. OLED lightings with optical feedback for luminance difference compensation

    Science.gov (United States)

    Shin, D. K.; Park, J. W.

    2013-12-01

    We have employed an optical feedback circuit in an organic light-emitting diode (OLED) lighting system to ensure uniform light output across large-area OLED lighting tiles. In a lighting system with several large-area OLED lighting tiles involved, the panel aging (luminance decrease) may appear differently in each, resulting in a falling-off in lighting quality. To tackle this, light output from each OLED tile is monitored by the optical feedback circuit that consists of a photodetector, I-V converter, 10-bit analogue-digital converter (ADC), and comparator. A photodetector mounted on a glass side generates a feedback signal (current) by detecting side-emitting OLED light. To monitor bottom-emitting output light by detecting side-emitting OLED light, a mapping table between the ADC value and the luminance of bottom emission has been established. If the ADC value is lower or higher than the reference one corresponding to the target luminance of OLED tiles, a micro controller unit adjusts the pulse width modulation used for the control of the power supplied to OLED tiles in such a way that the ADC value obtained from optical feedback is the same as the reference one. As a result, the target luminance of each individual OLED tile is kept unchanged. With the optical feedback circuit included in the lighting system, we have observed less than 2% difference in relative intensity of neighboring OLED tiles.

  19. A Novel Lighting OLED Panel Design

    Directory of Open Access Journals (Sweden)

    Enyang Zhang

    2016-11-01

    Full Text Available A novel OLED (organic light emitting diode lighting panel, which uses a special layout design, can reduce the photolithography cycles and process costs and is more reliable. It only needs two steps of photolithography cycles, which include an ITO (InSnO compound transparent oxide pattern and insulator pattern. There is no need for the metal bus pattern of the ordinary design. The OLED device structure is a type of red–green–blue (RGB-stacked emitting layer that has a good color index and greater adjustability, which improves the performance of the device. This novel design has the same equipment and material requirement compared to the ordinary design, and it is very beneficial in terms of high volume and low-cost production. It uses a hyper driving method because the entire OLED lighting panel is divided into many sub-emitting units; if one of the sub-emitting units is burned out, it has no effect on the adjacent sub-emitting unit, so the reliability is markedly better than the ordinary design.

  20. Menedžerske šole

    Directory of Open Access Journals (Sweden)

    Danica Purg

    1995-12-01

    Full Text Available Menedžerske šole so se pojavile v svetu pred približno sto leti v ZDA, od tam pa so se razširile v zahodno in v srednjo Evropo. V srednji in zahodni Evropi smo nekaj časa sledili ameriškemu modelu, vendar postaja vse bolj jasno, da potrebujemo šole, ki bodo ponujale v prakso usmerjen študij, uporaben za danes in jutri. Menedžerske šole v Ameriki so zašle v krizo, ker so njihovi programi preveč akademski in ker v večini primerov izobražujejo študente, ki še nimajo delovnih izkušenj. Največji problem razvoja menedžmenta predstavlja premajhno število usposobljenih profesorjev. Center Brdo, edina menedžerska šola v Sloveniji, problem usposobljenosti profesorjev rešuje na ta način, da je pritegnila iz sveta skupino uglednih profesorjev, obenem pa vzgaja generacijo svojih učiteljev. Pri Centru Brdo je tudi sedež Združenja managerskih šol Srednje in Vzhodne Evrope (CEEMAN, v katero je vključenih 51 menedžerskih šol. Namen Združenja je pospešiti razvoj menedžmenta, povezovati dejavnost šol in skrbeti za kakovost menedžerskih programov izobraževanja.

  1. Manufacturing Process for OLED Integrated Substrate

    Energy Technology Data Exchange (ETDEWEB)

    Hung, Cheng-Hung [Vitro Flat Glass LLC, Cheswick, PA (United States). Glass Technology Center

    2017-03-31

    The main objective of this project was to develop a low-cost integrated substrate for rigid OLED solid-state lighting produced at a manufacturing scale. The integrated substrates could include combinations of soda lime glass substrate, light extraction layer, and an anode layer (i.e., Transparent Conductive Oxide, TCO). Over the 3+ year course of the project, the scope of work was revised to focus on the development of a glass substrates with an internal light extraction (IEL) layer. A manufacturing-scale float glass on-line particle embedding process capable of producing an IEL glass substrate having a thickness of less than 1.7mm and an area larger than 500mm x 400mm was demonstrated. Substrates measuring 470mm x 370mm were used in the OLED manufacturing process for fabricating OLED lighting panels in single pixel devices as large as 120.5mm x 120.5mm. The measured light extraction efficiency (calculated as external quantum efficiency, EQE) for on-line produced IEL samples (>50%) met the project’s initial goal.

  2. Triarylborane-Based Materials for OLED Applications

    Directory of Open Access Journals (Sweden)

    Gulsen Turkoglu

    2017-09-01

    Full Text Available Multidisciplinary research on organic fluorescent molecules has been attracting great interest owing to their potential applications in biomedical and material sciences. In recent years, electron deficient systems have been increasingly incorporated into fluorescent materials. Triarylboranes with the empty p orbital of their boron centres are electron deficient and can be used as strong electron acceptors in conjugated organic fluorescent materials. Moreover, their applications in optoelectronic devices, energy harvesting materials and anion sensing, due to their natural Lewis acidity and remarkable solid-state fluorescence properties, have also been investigated. Furthermore, fluorescent triarylborane-based materials have been commonly utilized as emitters and electron transporters in organic light emitting diode (OLED applications. In this review, triarylborane-based small molecules and polymers will be surveyed, covering their structure-property relationships, intramolecular charge transfer properties and solid-state fluorescence quantum yields as functional emissive materials in OLEDs. Also, the importance of the boron atom in triarylborane compounds is emphasized to address the key issues of both fluorescent emitters and their host materials for the construction of high-performance OLEDs.

  3. Steerable patterned OLED backlight for autostereoscopic display application

    Science.gov (United States)

    Vogel, Uwe; Fehse, Karsten; Wartenberg, Philipp; Knobbe, Jens; Scholles, Michael; Richter, Bernd; Hild, Olaf

    2015-09-01

    OLED can be applied as highly efficient and high-resolution patternable illumination source for controllable and steerable backlights, e.g., for use in autostereoscopic displays. To evaluate technology and approach a 3.5" 3D QVGA display prototype has been developed and combines several achievements: large-area OLED backlight, highly-efficient and fast-response OLED top-emitter, striped patterned backlight, individual electronic driving for adaptive backlight control and 3D mobile display application.

  4. Neue vernetzbare Polymere für die OLED Technologie

    OpenAIRE

    Lichnerova, Eva

    2009-01-01

    Organische Leuchtdioden finden viel versprechende Anwendungen für tragbare Geräte wie zum Beispiel das Handy und der private Organizer. Polymere OLED sind oft aus den Lösungen hergestellt. Das Ziel der Arbeit ist die radikalische Copolymerisation von triphenylamin-haltigen Monomeren mit Diazosulfonaten. Triphenylamine sind sehr bekannt als Lochtransporter in OLEDs, andererseits dienen die Diazosulfonate als vernetzbare Gruppen. Organic light - emitting diodes (OLEDs) show promise for appli...

  5. Nimemuutus ei ole reform / Eiki Nestor

    Index Scriptorium Estoniae

    Nestor, Eiki, 1953-

    2003-01-01

    Ilmunud ka: Meie Maa, Sakala 18. sept. lk. 2, Hiiu Leht 19. september lk. 2, Valgamaalane 20. september lk. 2, Nädaline 23. september lk. 4, Põhjarannik, Severnoje Poberezhje 26. september lk. 2. Autori seisukoht on, et kõigepealt tuleb määratleda riigi ning omavalitsuse kohustused ja õigused, alles siis on mõtet arutada valitsuse ja omavalitsuste tulubaasi ning selle kujunemist. Maakonna tasandil tegutsevate omavalitsusliitude ümbernimetamine maapäevaks või maakoguks ei ole haldusreform

  6. Mina ei ole Albert Trapeezh / Illimar Paul

    Index Scriptorium Estoniae

    Paul, Illimar, 1945-

    2000-01-01

    1975. a. trükkisid V. Järmut, J. Ollik ja I. Paul suuri bussipileteid, mis olid näitusel "Harku 75". I. Pauli nime ei ole näituse "Harku 75" osavõtjate loetelus kataloogis "Harku 1975-95" ega "Lühikeses Eesti kunsti ajaloos". Kataloogi tiitellehel oleval grupifotol on I. Pauli mustaks värvitud figuur. Käesolevat illustreeriv väljapanek on näitusel "Déj̉ vu" Tallinna Kunstihoones

  7. Lock-in thermography of OLEDs through cover glass

    NARCIS (Netherlands)

    Garcia Lovera, T.; Van der Tempel, S.

    2010-01-01

    Many photovoltaic cells and OLEDs are covered by cover glass or foil to protect the device against oxygen and moisture. The cover glassor foil is semitransparent for infrared radiation and conducts the heat and blurs lock-in thermograms. In lock-in thermograms of OLEDs with cover glass short circu

  8. Ole Worm-Liv og videnskabTidstavle

    DEFF Research Database (Denmark)

    2006-01-01

    hæftet indeholder syv artikler om Ole Worms liv, videnskab, museum, slægtsportrætter, antikvariske arbejder og om installationen Room One......hæftet indeholder syv artikler om Ole Worms liv, videnskab, museum, slægtsportrætter, antikvariske arbejder og om installationen Room One...

  9. Organic light emitting diodes (OLEDS) and OLED-based structurally integrated optical sensors

    Energy Technology Data Exchange (ETDEWEB)

    Cai, Yuankun [Iowa State Univ., Ames, IA (United States)

    2010-01-01

    General introduction to OLED basics and OLED-based structurally integrated sensors was provided in chapter 1 and chapter 2. As discussed in chapter 3, OLEDs were developed or improved using novel engineering methods for better charge injection (increased by over 1 order of magnitude) and efficiency. As the excitation sources, these OLEDs have preferred characteristics for sensor applications, including narrowed emission, emission at desired wavelength, and enhanced output for reduced EL background, higher absorption and improved device lifetime. In addition to OLEDs with desired performance, sensor integration requires oxidase immobilization with the sensor film for O2-based biological and chemical sensing. Nanoparticles such as ZnO have large surface area and high isoelectric point (~9.5), which favors enzyme immobilization via physical adsorption as well as Coulombic bonding. In chapter 4, it was demonstrated that ZnO could be used for this purpose, although future work is needed to further bond the ZnO to the sensor film. In chapter 5, single unit sensor was extended to multianalyte parallel sensing based on an OLED platform, which is compact and integrated with silicon photodiodes and electronics. Lactate and glucose were simultaneously monitored with a low limit of detection 0.02 mM, fast response time (~1 minute) and dynamic range from 0-8.6 ppm of dissolved oxygen. As discovered in previous work, the dynamic range covers 0-100% gas phase O2 or 0-40 ppm dissolved oxygen at room temperature. PL decay curve, which is used to extract the decay time, is usually not a simple exponential at high O2 concentration, which indicates that O2 is not equally accessible for different luminescent sites. This creates a challenge for data analysis, which however was successfully processed by stretched exponential as shown in chapter 6. This also provides an insight about the distribution of O2:dye collisional quenching

  10. EDITORIAL: Flexible OLEDs and organic electronics Flexible OLEDs and organic electronics

    Science.gov (United States)

    Kim, Jang-Joo; Han, Min-Koo; Noh, Yong-Young

    2011-03-01

    Following the great discovery of the electrically conducting polymer, doped polyacetylene, which was honorably recognized in 2000 with the Nobel Prize in chemistry, conjugated molecules, i.e. organic semiconductors, have become an attractive class of active elements for various electronic or opto-electronic applications. Significant effort has been made in both academia and industry to investigate π-conjugated molecules for their unique electrical or opto-electrical properties over the last three decades. The discovery of electroluminescence in conjugated small molecules in 1982 and in polymers in 1989 was a major breakthrough, bringing those molecules to commercial applications within reach for the first time in (opto-)electronic devices, such as organic light-emitting diodes (OLEDs), photovoltaic cells (OPVs), and field-effect transistors (OFETs). Nowadays, we use OLED displays in everyday life in mobile devices. The potential of these devices, which have been fabricated with conjugated molecules, lies in the possibility to combine the advantages of solution processability, chemical tunability and material strength of polymers with the typical properties of plastics, to realize low-cost, large-area electronic devices on flexible substrates by solution deposition and direct-write graphic art printing techniques. The articles in the flexible OLEDs and organic electronics special issue in Semiconductor Science and Technology deal with a diversity of topics and effectively reflect the current status of research from all over the world on various organic electronic devices, including OLEDs, OPVs, and OFETs. Firstly, S Park et al describe the recent progress in thin-film encapsulation techniques for flexible AM-OLED and large-area OLED lightings, and their applications are discussed by J-W Park et al. Flexible active-matrix OLEDs on plastics require stable and flexible thin-film transistors processed at low temperature. Metal oxide thin-film transistors are proposed

  11. Integration of OLE into the TACL control system

    Science.gov (United States)

    Bowling, B.; Douglas, D.; Kewisch, J.; Kloeppel, P.; Kraft, G. A.

    1993-12-01

    OLE, the On-Line Envelope program, is a first-order optics code which was designed to provide fast lattice transfer functions from actual accelerator magnet and cavity control values. This paper addresses the results of a successful integration of OLE into the CEBAF control system, TACL. This marriage provides the user with the ability for obtaining real-time Twiss parameters and transfer functions which reflect the current operational state of the machine. The resultant OLE calculation provides the analytical core for many control and diagnostic functions used at CEBAF, including focusing corrections, orbit corrections, emittance measurements, and beamline analysis.

  12. Recent advances in small molecule OLED-on-silicon microdisplays

    Science.gov (United States)

    Ghosh, Amalkumar P.; Ali, Tariq A.; Khayrullin, Ilyas; Vazan, Fridrich; Prache, Olivier F.; Wacyk, Ihor

    2009-08-01

    High resolution OLED-on-silicon microdisplay technology is unique and challenging since it requires very small subpixel dimensions (~ 2-5 microns). eMagin's OLED microdisplay is based on white top emitter architecture using small molecule organic materials. The devices are fabricated using high Tg materials. The devices are hermetically sealed with vacuum deposited thin film layers. LCD-type color filters are patterned using photolithography methods to generate primary R, G, B colors. Results of recent improvements in the OLED-on-silicon microdisplay technology, with emphasis on efficiencies, lifetimes, grey scale and CIE color coordinates for SVGA and SXGA resolution microdisplays is presented.

  13. Polymer OLED White Light Development Program

    Energy Technology Data Exchange (ETDEWEB)

    Homer Antoniadis; Vi-En Choong; Stelios Choulis; Brian Cumpston; Rahul Gupta; Mathew Mathai; Michael Moyer; Franky So

    2005-12-19

    OSRAM Opto Semiconductors (OSRAM) successfully completed development, fabrication and characterization of the large area, polymer based white light OLED prototype at their OLED Research and Development (R&D) facility in San Jose, CA. The program, funded by the Department of Energy (DOE), consisted of three key objectives: (1) Develop new polymer materials and device architectures--in order to improve the performance of organic light emitters. (2) Develop processing techniques--in order to demonstrate and enable the manufacturing of large area, white light and color tunable, solid state light sources. (3) Develop new electronics and driving schemes for organic light sources, including color-tunable light sources. The key performance goals are listed. A world record efficiency of 25 lm/W was established for the solution processed white organic device from the significant improvements made during the project. However, the challenges to transfer this technology from an R&D level to a large tile format such as, the robustness of the device and the coating uniformity of large area panels, remain. In this regard, the purity and the blend nature of the materials are two factors that need to be addressed in future work. During the first year, OSRAM's Materials and Device group (M&D) worked closely with the major polymer material suppliers to develop the polymer emissive technology. M&D was successful in demonstrating a 7-8 lm/W white light source which was based on fluorescent materials. However, it became apparent that the major gains in efficiency could only be made if phosphorescent materials were utilized. Thus, in order to improve the performance of the resulting devices, the focus of the project shifted towards development of solution-processable phosphorescent light emitting diodes (PHOLEDs) and device architectures. The result is a higher efficiency than the outlined project milestone.

  14. Increased OLED radiative efficiency using a directive optical antenna.

    Science.gov (United States)

    McDaniel, S; Blair, S

    2010-08-02

    We investigate the improvement in efficiency of organic light emitting diodes/displays (OLEDs) by embedding a typical OLED structure within a metallic patch grating resonator. A patch grating resonator is similar to the more familiar Fabry-Perot resonator, except that one mirror of the resonator is a metallic patch grating with a pitch approximately lambda /2 that reduces lateral propagation of radiative emission. FDTD simulations of the proposed structure indicate a potential 71% increase in emitted power over that of a reference OLED structure, and an additional 5% gain from adding an ITO spacer adjacent to the metallic electrode layer (for a total 76% increase). Implementation of this structure requires little to no modification of the OLED manufacturing process.

  15. Accelerated discovery of OLED materials through atomic-scale simulation

    Science.gov (United States)

    Halls, Mathew D.; Giesen, David J.; Hughes, Thomas F.; Goldberg, Alexander; Cao, Yixiang; Kwak, H. Shaun; Mustard, Thomas J.; Gavartin, Jacob

    2016-09-01

    Organic light-emitting diode (OLED) devices are under widespread investigation to displace or complement inorganic optoelectronic devices for solid-state lighting and active displays. The materials in these devices are selected or designed according to their intrinsic and extrinsic electronic properties with concern for efficient charge injection and transport, and desired stability and light emission characteristics. The chemical design space for OLED materials is enormous and there is need for the development of computational approaches to help identify the most promising solutions for experimental development. In this work we will present examples of simulation approaches available to efficiently screen libraries of potential OLED materials; including first-principles prediction of key intrinsic properties, and classical simulation of amorphous morphology and stability. Also, an alternative to exhaustive computational screening is introduced based on a biomimetic evolutionary framework; evolving the molecular structure in the calculated OLED property design space.

  16. OLED displays in a ground-mobile application

    Science.gov (United States)

    Thomas, J.; Lorimer, S.

    2008-04-01

    OLED technology has matured sufficiently to consider it a realistic candidate for military display applications. Manufacturing sources are transitioning from an early developer to a business focused and often rationalised supply base that already has a sustainable business model. New commercial products, with a growing list of applications are slowly swelling the list of available OLED display components that can be considered for military requirements. This paper describes an exploratory application of OLED technology to the Towed Artillery Digitisation (TAD) programme. The Gunners Display function in this system endures the most difficult environment available in Army programmes. By replicating the Gunners Display, we have confirmed that OLED technology is compatible with and technically almost ready for rugged military applications using newly available commercial sources.

  17. Seniorforsker Ole Hertel udnævnt til adjungeret professor

    DEFF Research Database (Denmark)

    Pedersen, Jens Christian

    2009-01-01

    Sektionsleder og seniorforsker Ole Hertel, Danmarks Miljøundersøgelser (DMU) ved Aarhus Universitet, er udnævnt til adjungeret professor ved Institut for Miljø, Samfund og Rumlig Forandring på Roskilde Universitet.......Sektionsleder og seniorforsker Ole Hertel, Danmarks Miljøundersøgelser (DMU) ved Aarhus Universitet, er udnævnt til adjungeret professor ved Institut for Miljø, Samfund og Rumlig Forandring på Roskilde Universitet....

  18. New Optoelectronic Technology Simplified for Organic Light Emitting Diode (OLED)

    OpenAIRE

    Andre F. S. Guedes; Vilmar P. Guedes; Simone Tartari; Mônica L. Souza; Idaulo J. Cunha

    2014-01-01

    The development of Organic Light Emitting Diode (OLED), using an optically transparent substrate material and organic semiconductor materials, has been widely utilized by the electronic industry when producing new technological products. The OLED are the base Poly (3,4-ethylenedioxythiophene), PEDOT, and Polyaniline, PANI, were deposited in Indium Tin Oxide, ITO, and characterized by UV-Visible Spectroscopy (UV-Vis), Optical Parameters (OP) and Scanning Electron Microscopy (SEM). In addition,...

  19. New Optoelectronic Technology Simplified for Organic Light Emitting Diode (OLED

    Directory of Open Access Journals (Sweden)

    Andre F. S. Guedes

    2014-06-01

    Full Text Available The development of Organic Light Emitting Diode (OLED, using an optically transparent substrate material and organic semiconductor materials, has been widely utilized by the electronic industry when producing new technological products. The OLED are the base Poly (3,4-ethylenedioxythiophene, PEDOT, and Polyaniline, PANI, were deposited in Indium Tin Oxide, ITO, and characterized by UV-Visible Spectroscopy (UV-Vis, Optical Parameters (OP and Scanning Electron Microscopy (SEM. In addition, the thin film obtained by the deposition of PANI, prepared in perchloric acid solution, was identified through PANI-X1. The result obtained by UV-Vis has demonstrated that the Quartz/ITO/PEDOT/PANI-X1 layer does not have displacement of absorption for wavelengths greaters after spin-coating and electrodeposition. Thus, the spectral irradiance of the OLED informed the irradiance of 100 W/m2, and this result, compared with the standard Light Emitting Diode (LED, has indicated that the OLED has higher irradiance. After 1000 hours of electrical OLED tests, the appearance of nanoparticles visible for images by SEM, to the migration process of organic semiconductor materials, was present, then. Still, similar to the phenomenon of electromigration observed in connections and interconnections of microelectronic devices, the results have revealed a new mechanism of migration, which raises the passage of electric current in OLED.

  20. de los hoteles españoles

    Directory of Open Access Journals (Sweden)

    Enrique Claver Cortés

    2007-01-01

    Full Text Available Los hoteles necesitan cada vez más información para su correcta gestión y para maximizar su desempeño o éxito empresarial. De esta forma, en este estudio se analizan una serie de variables estratégicas clave que influyen directamente sobre el desempeño hotelero. Estas variables son el tamaño, el tipo de gestión y la categoría de los hoteles. En este trabajo, empleando la teoría de los grupos estratégicos, se han agrupado los hoteles españoles de entre 3 a 5 estrellas en función de cada una de estas variables estratégicas con el objetivo de determinar si influyen significativamente sobre el desempeño hotelero y en qué sentido. Entre los resultados que se han obtenido destacan el hecho de que a mayor tamaño y categoría, mayor es el desempeño que alcanzan los hoteles. Así mismo, los hoteles que pertenecen a cadenas alcanzan niveles de desempeño mayores que los independientes. Por lo tanto, de esta investigación se deducen importantes implicaciones para la dirección hotelera.

  1. Optical characterization of OLED emitter properties by radiation pattern analyses

    Energy Technology Data Exchange (ETDEWEB)

    Flaemmich, Michael

    2011-09-08

    Researches in both, academia and industry are investigating optical loss channels in OLED layered systems by means of optical simulation tools in order to derive promising concepts for a further enhancement of the overall device performance. Besides other factors, the prospects of success of such optimization strategies rely severely on the credibility of the optical input data. The present thesis provides a guideline to measure the active optical properties of OLED emitter materials in situ by radiation pattern analyses. Reliable and widely applicable methods are introduced to determine the internal electroluminescence spectrum, the profile of the emission zone, the dipole emitter orientation, and the internal luminescence quantum efficiency of emissive materials from the optical far field emission of OLEDs in electrical operation. The proposed characterization procedures are applied to sets of OLEDs containing both, fluorescent polymeric materials as well as phosphorescent small-molecular emitters, respectively. On the one hand, quite expected results are obtained. On the other hand, several novel and truly surprising results are found. Most importantly, this thesis contains the first report of a non-isotropic, mainly parallel emitter orientation in a phosphorescent small-molecular guest-host system (Ir(MDQ)2(acac) in a-NPD). Due to the latter result, emitter orientation based optimization of phosphorescent OLEDs seems to be within reach. Since parallel dipoles emit preferably into air, the utilization of smart emissive materials with advantageous molecular orientation is capable to boost the efficiency of phosphorescent OLEDs by 50%. Materials design, the influence of the matrix material and the substrate, as well as film deposition conditions are just a few parameters that need to be studied further in order to exploit the huge potential of the dipole emitter orientation in phosphorescent OLEDs.

  2. OLED Defect Inspection System Development through Independent Component Analysis

    Directory of Open Access Journals (Sweden)

    Xin Chen

    2012-12-01

    Full Text Available Organic Light Emitting Displays (OLED is a new type of display device which has become increasingly attractive and popular. Due to the complex manufacturing process, various defects may exist on the OLED panel affecting the quality and life of the display panels. These defects have the characteristics of fuzzy boundaries, irregular in shape, low contrast with background and especially, they are mixed with the pixel texture background increasing the difficulty of a rapid recognition. In this paper, we proposed an approach to detect the defects based on the model of independent component analysis (ICA. The ICA model is applied to a perfect OLED image to estimate its corresponding independent components (ICs and create the de-mixing matrix. Through estimation and determination of a proper ICi row vector of the faultless image, a new de-mixing matrix can be generated which constitutes only uniform information and is then applied to reconstruct the texture background of source OLED images. Through the operation of subtraction of the reconstructed background from the source images and the binary segmentation, the defects can be detected. Based on the algorithms, a defect detection system for the OLED panels was implemented and the testing work was performed in this study. The testing results show that the proposed method is feasible and effective.

  3. Thin Film Packaging Solutions for High Efficiency OLED Lighting Products

    Energy Technology Data Exchange (ETDEWEB)

    None

    2008-06-30

    The objective of the 'Thin Film Packaging Solutions for High Efficiency OLED Lighting Products' project is to demonstrate thin film packaging solutions based on SiC hermetic coatings that, when applied to glass and plastic substrates, support OLED lighting devices by providing longer life with greater efficiency at lower cost than is currently available. Phase I Objective: Demonstrate thin film encapsulated working phosphorescent OLED devices on optical glass with lifetime of 1,000 hour life, CRI greater than 75, and 15 lm/W. Phase II Objective: Demonstrate thin film encapsulated working phosphorescent OLED devices on plastic or glass composite with 25 lm/W, 5,000 hours life, and CRI greater than 80. Phase III Objective: Demonstrate 2 x 2 ft{sup 2} thin film encapsulated working phosphorescent OLED with 40 lm/W, 10,000 hour life, and CRI greater than 85. This report details the efforts of Phase III (Budget Period Three), a fourteen month collaborative effort that focused on optimization of high-efficiency phosphorescent OLED devices and thin-film encapsulation of said devices. The report further details the conclusions and recommendations of the project team that have foundation in all three budget periods for the program. During the conduct of the Thin Film Packaging Solutions for High Efficiency OLED Lighting Products program, including budget period three, the project team completed and delivered the following achievements: (1) a three-year marketing effort that characterized the near-term and longer-term OLED market, identified customer and consumer lighting needs, and suggested prototype product concepts and niche OLED applications lighting that will give rise to broader market acceptance as a source for wide area illumination and energy conservation; (2) a thin film encapsulation technology with a lifetime of nearly 15,000 hours, tested by calcium coupons, while stored at 16 C and 40% relative humidity ('RH'). This encapsulation technology

  4. High Quantum Efficiency OLED Lighting Systems

    Energy Technology Data Exchange (ETDEWEB)

    Shiang, Joseph [General Electric (GE) Global Research, Fairfield, CT (United States)

    2011-09-30

    The overall goal of the program was to apply improvements in light outcoupling technology to a practical large area plastic luminaire, and thus enable the product vision of an extremely thin form factor high efficiency large area light source. The target substrate was plastic and the baseline device was operating at 35 LPW at the start of the program. The target LPW of the program was a >2x improvement in the LPW efficacy and the overall amount of light to be delivered was relatively high 900 lumens. Despite the extremely difficult challenges associated with scaling up a wet solution process on plastic substrates, the program was able to make substantial progress. A small molecule wet solution process was successfully implemented on plastic substrates with almost no loss in efficiency in transitioning from the laboratory scale glass to large area plastic substrates. By transitioning to a small molecule based process, the LPW entitlement increased from 35 LPW to 60 LPW. A further 10% improvement in outcoupling efficiency was demonstrated via the use of a highly reflecting cathode, which reduced absorptive loss in the OLED device. The calculated potential improvement in some cases is even larger, ~30%, and thus there is considerable room for optimism in improving the net light coupling efficacy, provided absorptive loss mechanisms are eliminated. Further improvements are possible if scattering schemes such as the silver nanowire based hard coat structure are fully developed. The wet coating processes were successfully scaled to large area plastic substrate and resulted in the construction of a 900 lumens luminaire device.

  5. Numerical analysis of nanostructures for enhanced light extraction from OLEDs

    CERN Document Server

    Zschiedrich, L; Burger, S; Schmidt, F; 10.1117/12.2001132

    2013-01-01

    Nanostructures, like periodic arrays of scatters or low-index gratings, are used to improve the light outcoupling from organic light-emitting diodes (OLED). In order to optimize geometrical and material properties of such structures, simulations of the outcoupling process are very helpful. The finite element method is best suited for an accurate discretization of the geometry and the singular-like field profile within the structured layer and the emitting layer. However, a finite element simulation of the overall OLED stack is often beyond available computer resources. The main focus of this paper is the simulation of a single dipole source embedded into a twofold infinitely periodic OLED structure. To overcome the numerical burden we apply the Floquet transform, so that the computational domain reduces to the unit cell. The relevant outcoupling data are then gained by inverse Flouqet transforming. This step requires a careful numerical treatment as reported in this paper.

  6. HL7 with CORBA and OLE: software components for healthcare.

    Science.gov (United States)

    Rishel, W

    1996-01-01

    Componentized software promises easier, more fine-grained integration of disparate software systems. Variations of the technology can help to achieve tight coupling among disparate programs on the clinical workstation or across wide area networks. HL7 members have been designing extensions to the protocol for the exchange of healthcare information using Microsoft OLE and CORBA technologies. Extensive prototyping has been performed, including the simultaneous interconnection of sixteen different vendor systems exchanging demographic data and lab results. The first release of this standard will be notable in that the specifications for OLE and CORBA will be entirely isomorphic, they will be based directly, on HL7 version 2.3, and they may easily be implemented in systems that are not written using object-oriented programming tools. As HL7 version 3 is developed on an object-oriented model of healthcare information, the same approach will be used so information about the objects may be shared using CORBA and OLE.

  7. Evaluation of OLED and edge-lit LED lighting panels

    Science.gov (United States)

    Mou, Xi; Narendran, Nadarajah; Zhu, Yiting; Freyssinier, Jean Paul

    2016-09-01

    Solid-state lighting (SSL) offers a new technology platform for lighting designers and end-users to illuminate spaces with low energy demand. Two types of SSL sources include organic light-emitting diodes (OLEDs) and light-emitting diodes (LEDs). OLED is an area light source, and its primary competing technology is the edge-lit LED panel. Generally, both of these technologies are considered similar in shape and appearance, but there is little understanding of how people perceive discomfort glare from large area light sources. The objective of this study was to evaluate discomfort glare for the two lighting technologies under similar operating conditions by gathering observers' reactions. The human factors study results showed no statistically significant difference in human response to discomfort glare between OLED and edge-lit LED panels when the two light sources produced the same lighting stimulus. This means both technologies appeared equally glary beyond a certain luminance.

  8. Digital driver for 2-inch LTPS AM-OLED displays

    Institute of Scientific and Technical Information of China (English)

    YIN Sheng; CHENG Shuai; SHEN Liang; ZOU Xue-cheng

    2006-01-01

    For LTPS AM-OLED displays,the spatial variation in the electrical characteristics of polysilicon TFTs will cause non-uniform pixel brightness and poor grayscale accuracy.The technological solution for this problem will open up the larger size application of LTPS AM-OLED displays.In this paper,a digital driver employing a FPGA device is designed to serve 2-inch color LTPS AM-OLED displays with 128×(160×3) resolution.A digital method of simultaneous address-display (SAD) and the digital visual interface (DVI) are introduced in the driving scheme.100% display per.ratio can be obtained.Moving image with 16 grayscales is realized and has good image uniformity.

  9. OLED Luminaire with Panel Integrated Drivers and Advanced Controls

    Energy Technology Data Exchange (ETDEWEB)

    Lu, Michael [Acuity Brands Lighting, Inc., Atlanta, GA (United States); Spindler, Jeff [OLEDWorks, Rochester, NY (United States)

    2017-01-31

    For this DOE award, Acuity Brands Lighting developed a novel OLED luminaire system featuring panel-integrated drivers at each individual OLED panel. The luminaire has a base station that receives user commands and performs AC/DC conversion. A power line communication (PLC) protocol is used to provide both power and digital control to each panel. A 66-panel CanvisTM luminaire using state-of-art OLED panels based on this system was successfully constructed. This is a first demonstration of such a luminaire architecture. It is also the first known implementation of this number of independently addressable nodes with a PLC protocol. This luminaire system architecture has added benefits in the flexibility of using multiple panel vendors for a given product, forward compatibility with future panels, and reduced luminaire wiring complexity and assembly time.

  10. Dilemmaet arbejdsliv - familieliv i Norden

    DEFF Research Database (Denmark)

    Bonke, Jens

    Forholdet mellem arbejdsliv og familieliv er et spørgsmål, der har stor betydning for moderne familier. Den offentlige interesse for dette forhold har da også været stigende, og spørgsmålet står i dag på den politiske dagsorden. I denne antologi belyser en række nordiske forskere dilemmaet mellem...

  11. Dielectric nanoparticles for the enhancement of OLED light extraction efficiency

    Science.gov (United States)

    Mann, Vidhi; Rastogi, Vipul

    2017-03-01

    This work reports the use of dielectric nanoparticles placed at glass substrate in the improvement of light extraction efficiency of organic light emitting diode (OLED). The nanoparticles will act as scattering medium for the light trapped in the waveguiding modes of the device. The scattering efficiency of dielectric nanoparticles has been calculated by Mie Theory. The finite difference time domain (FDTD) analysis and simulation estimate the effect of dielectric nanoparticles on the light extraction efficiency of OLED. The efficiency depends upon the diameter, interparticle separation and refractive index of dielectric nanoparticles. It is shown that the dielectric nanoparticles layer can enhance the light extraction efficiency by a factor of 1.7.

  12. Enhanced performance of organic light-emitting diodes (OLEDs) and OLED-based photoluminescent sensing platforms by novel microstructures and device architectures

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Rui [Ames Lab., Ames, IA (United States)

    2012-01-01

    After a general introduction to OLEDs and OLED-based PL sensors, the transient emission mechanism of guest-host OLEDs is described both experimentally and theoretically. A monolithic and easy-to-apply process is demonstrated for fabricating multicolor microcavity OLEDs (that improve the sensor platform). The outcoupling issues of OLEDs at the substrate/air interface are addressed by using a microstructured polymer film resulting from a PS and polyethylene glycol (PEG) mixture. Based on the understanding of OLEDs and their improvement, research was done in order to realize integrated all organic-based O2 and pH sensors with improved signal intensity and sensitivity. The sensor design modification and optimization are summarized

  13. Linnugripp ei ole biorelv / Kevin Probert-Ehaver

    Index Scriptorium Estoniae

    Probert-Ehaver, Kevin

    2008-01-01

    Vastukaja 10. juulil Eesti Ekspressis ilmunud artiklile "Linnugripp - surm katseklaasist", milles väidetakse, et linnugripp ning teised uued nakkushaigused on biorelvad. Kriisireguleerimise konsultant selgitab, et nii Eesti kui ka Ameerika spetsialistide hinnangul ei ole linnugripp kuidagi seotud biorelvade programmiga

  14. Linnugripp ei ole biorelv / Kevin Probert-Ehaver

    Index Scriptorium Estoniae

    Probert-Ehaver, Kevin

    2008-01-01

    Vastukaja 10. juulil Eesti Ekspressis ilmunud artiklile "Linnugripp - surm katseklaasist", milles väidetakse, et linnugripp ning teised uued nakkushaigused on biorelvad. Kriisireguleerimise konsultant selgitab, et nii Eesti kui ka Ameerika spetsialistide hinnangul ei ole linnugripp kuidagi seotud biorelvade programmiga

  15. Current state of OLED technology relative to military avionics requirements

    Science.gov (United States)

    Tchon, Joseph L.; Barnidge, Tracy J.; Hufnagel, Bruce D.; Bahadur, Birendra

    2014-06-01

    The paper will review optical and environmental performance thresholds required for OLED technology to be used on various military platforms. Life study results will be summarized to highlight trends while identifying remaining performance gaps to make this technology viable for future military avionics platforms.

  16. Roll-to-Roll Solution-Processible Small-Molecule OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Jie Jerry

    2012-07-31

    The objective of this program is to develop key knowledge and make critical connections between technologies needed to enable low-cost manufacturing of OLED lighting products. In particular, the program was intended to demonstrate the feasibility of making high performance Small-Molecule OLEDs (SM-OLED) using a roll-to-roll (R2R) wet-coating technique by addressing the following technical risks (1) Whether the wet-coating technique can provide high performance OLEDs, (2) Whether SM-OLED can be made in a R2R manner, (3) What are the requirements for coating equipment, and (4) Whether R2R OLEDs can have the same performance as the lab controls. The program has been managed and executed according to the Program Management Plan (PMP) that was first developed at the beginning of the program and further revised accordingly as the program progressed. Significant progress and risk reductions have been accomplished by the end of the program. Specific achievements include: (1) Demonstrated that wet-coating can provide OLEDs with high LPW and long lifetime; (2) Demonstrated R2R OLEDs can be as efficient as batch controls (Figure 1) (3) Developed & validated basic designs for key equipment necessary for R2R SM-OLEDs; (4) Developed know-hows & specifications on materials & ink formulations critical to wetcoating; (5) Developed key R2R processes for each OLED layer (6) Identified key materials and components such as flexible barrier substrates necessary for R2R OLEDs.

  17. Improved multilayer OLED architecture using evolutionary genetic algorithm

    Energy Technology Data Exchange (ETDEWEB)

    Quirino, W.G. [LADOR - Laboratorio de Dispositivos Organicos, Dimat - Inmetro, Duque de Caxias, RJ (Brazil); Teixeira, K.C. [LADOR - Laboratorio de Dispositivos Organicos, Dimat - Inmetro, Duque de Caxias, RJ (Brazil); LOEM - Laboratorio de Optoeletronica Molecular, Physics Department, Pontifical Catholic University of Rio de Janeiro, 22453-900, Rio de Janeiro, RJ (Brazil); Legnani, C. [LADOR - Laboratorio de Dispositivos Organicos, Dimat - Inmetro, Duque de Caxias, RJ (Brazil); Calil, V.L. [LADOR - Laboratorio de Dispositivos Organicos, Dimat - Inmetro, Duque de Caxias, RJ (Brazil); LOEM - Laboratorio de Optoeletronica Molecular, Physics Department, Pontifical Catholic University of Rio de Janeiro, 22453-900, Rio de Janeiro, RJ (Brazil); Messer, B.; Neto, O.P. Vilela; Pacheco, M.A.C. [ICA - Laboratorio de Inteligencia Computacional Aplicada, Electrical Engineering Department, Pontifical Catholic University of Rio de Janeiro, 22451-900, Rio de Janeiro, RJ (Brazil); Cremona, M., E-mail: cremona@fis.puc-rio.b [LADOR - Laboratorio de Dispositivos Organicos, Dimat - Inmetro, Duque de Caxias, RJ (Brazil); LOEM - Laboratorio de Optoeletronica Molecular, Physics Department, Pontifical Catholic University of Rio de Janeiro, 22453-900, Rio de Janeiro, RJ (Brazil)

    2009-12-31

    Organic light-emitting diodes (OLEDs) constitute a new class of emissive devices, which present high efficiency and low voltage operation, among other advantages over current technology. Multilayer architecture (M-OLED) is generally used to optimize these devices, specially overcoming the suppression of light emission due to the exciton recombination near the metal layers. However, improvement in recombination, transport and charge injection can also be achieved by blending electron and hole transporting layers into the same one. Graded emissive region devices can provide promising results regarding quantum and power efficiency and brightness, as well. The massive number of possible model configurations, however, suggests that a search algorithm would be more suitable for this matter. In this work, multilayer OLEDs were simulated and fabricated using Genetic Algorithms (GAs) as evolutionary strategy to improve their efficiency. Genetic Algorithms are stochastic algorithms based on genetic inheritance and Darwinian strife to survival. In our simulations, it was assumed a 50 nm width graded region, divided into five equally sized layers. The relative concentrations of the materials within each layer were optimized to obtain the lower V/J{sup 0.5} ratio, where V is the applied voltage and J the current density. The best M-OLED architecture obtained by genetic algorithm presented a V/J{sup 0.5} ratio nearly 7% lower than the value reported in the literature. In order to check the experimental validity of the improved results obtained in the simulations, two M-OLEDs with different architectures were fabricated by thermal deposition in high vacuum environment. The results of the comparison between simulation and some experiments are presented and discussed.

  18. Calculation and Improvement on External Quantum Efficiency of OLEDs

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The calculation of the external quantum efficiency(ηext) of organic light-emitting devices(OLEDs) is presented theoretically. The basic idea is to obtain ηext by calculating the fraction of the generated light that can escape through the top surface and the average transmittance over the escape cone. During the calculation, the effects of the interference, absorption and multiple reflections are neglected. Then a result of a typical 8-tris-hydroxyquinoline aluminum(Alq3)-based OLEDs on a planar glass substrate is obtained. And a twice increase in ηext can be achieved by using a high-index-glass substrate with an antireflection coating(SiO2) on substrate surface.

  19. High efficiency and stable white OLED using a single emitter

    Energy Technology Data Exchange (ETDEWEB)

    Li, Jian [Arizona State Univ., Tempe, AZ (United States). School of Mechanical, Aerospace, Chemical and Materials Engineering

    2016-01-18

    The ultimate objective of this project was to demonstrate an efficient and stable white OLED using a single emitter on a planar glass substrate. The focus of the project is on the development of efficient and stable square planar phosphorescent emitters and evaluation of such class of materials in the device settings. Key challenges included improving the emission efficiency of molecular dopants and excimers, controlling emission color of emitters and their excimers, and improving optical and electrical stability of emissive dopants. At the end of this research program, the PI has made enough progress to demonstrate the potential of excimer-based white OLED as a cost-effective solution for WOLED panel in the solid state lighting applications.

  20. Novel bipolar bathophenanthroline containing hosts for highly efficient phosphorescent OLEDs.

    Science.gov (United States)

    Ge, Ziyi; Hayakawa, Teruaki; Ando, Shinji; Ueda, Mitsuru; Akiike, Toshiyuki; Miyamoto, Hidetoshi; Kajita, Toru; Kakimoto, Masa-aki

    2008-02-07

    The electronic structures of eight bathophenanthroline derivatives were elucidated by DFT calculations, and four representatives of which CZBP, m-CZBP, m-TPAP, and BPABP were synthesized and employed as the hosts to afford highly efficient phosphorescent OLEDs. The calculated molecular orbital energies agree well with the experimental results, which further demonstrates that the localization of HOMO and LUMO at the respective hole- and electron-transporting moieties is desirable in bipolar molecular designs.

  1. La felicidad de los españoles: factores explicativos

    OpenAIRE

    Ahn Jung, Namkee; Mochón Morcillo, Francisco

    2010-01-01

    El presente trabajo analiza los factores explicativos de la felicidad de los españoles. Los resultados son consistentes con lo establecido por la literatura disponible. Los divorciados y los viudos son notablemente más infelices que los casados, el desempleo a aparece fuertemente correlacionado con la infelicidad, la felicidad aumenta con la renta de forma decreciente, la salud tiene una notable incidencia en la felicidad y la religión se correlaciona positivamente con la felicidad. La inclus...

  2. Light Extraction Efficiency in OLED with Sub-wavelength Structures

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    By simulating with finite-difference time-domain(FDTD) method, it is proved that two kinds of new photonic crystal slab(PCS) structures could enhance the light extraction efficiency of OLED. By comparing the results, the most effective PCS structure with maximum light extraction efficiency(Er=1.99) is got. The optimized geometric parameters and optimized performance parameters of the PCS structures are also obtained.

  3. Investigation of top-emitting OLEDs using molybdenum oxide as anode buffer layer

    Institute of Scientific and Technical Information of China (English)

    LIN Hui; YU Jun-sheng; ZHANG Wei

    2012-01-01

    A high-effective bottom anode is essential for high-performance top-emitting organic light-emitting devices (OLEDs).In this paper,Ag-based top-emitting OLEDs are investigated.Ag has the highest reflectivity for visible light among all metals,yet its hole-injection properties are not ideal for anodes of top-emitting OLED.The performance of the devices is significantly improved using the molybdenum oxide as anode buffer layer at the surface of Ag.By introducing the molybdenum oxide,the hole injection from Ag anodes into top-emitting OLED is largely enhanced with rather high reflectivity retained.

  4. Peeter Kreitzberg : Ma ei ole Savisaare käskjalg / Peeter Kreitzberg ; interv. Maarius Suviste

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2001-01-01

    Presidendikampaaniast ja presidendi missioonist. Kriitikat president Lennart Meri tegevuse kohta. Miks Eesti ei ole naispresidendikandidaati. Keskerakonna imago ja Edgar Savisaar. Eesti: probleemid ja tulevik. Autor: Keskerakond. Parlamendisaadik

  5. Peeter Kreitzberg : Ma ei ole Savisaare käskjalg / Peeter Kreitzberg ; interv. Maarius Suviste

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2001-01-01

    Presidendikampaaniast ja presidendi missioonist. Kriitikat president Lennart Meri tegevuse kohta. Miks Eesti ei ole naispresidendikandidaati. Keskerakonna imago ja Edgar Savisaar. Eesti: probleemid ja tulevik. Autor: Keskerakond. Parlamendisaadik

  6. Studying the Attribution of LiF in OLED by the - Characteristics

    Directory of Open Access Journals (Sweden)

    Chun-lin Zhang

    2010-01-01

    Full Text Available The organic light-emitting device (OLED with simple structures of indium tin oxide (ITO/tris(8-quinolinolato aluminum (Alq3/LiF/Al and ITO/Alq3/Al was fabricated to analyze the contribution of LiF in OLED. We used the - characteristics to investigate the contribution of LiF in OLED and found that the capacitance of the above-mentioned structures was 12.5 nF and 77.5 nF, respectively. It is shown that the LiF layer affects the property of OLED resulting in the change of the capacitance of the device.

  7. Cenizas de combustibles españoles. Propiedades aglomerantes

    Directory of Open Access Journals (Sweden)

    García de Paredes y Gaibrois, Pablo

    1959-06-01

    Full Text Available Not availableEl deseo que animó a la Dirección de este Instituto en orden a la máxima utilización de cuantos subproductos ofrezca la industria española y posean propiedades que permitan emplearlos en lo construcción, con el consiguiente abaratamiento de la misma, ha sido la idea rectora de este primer o preliminar estudio de las cenizas que algunos combustibles españoles dejan al ser utilizados en las centrales térmicas.

  8. Agricultural activities in the Oleśnica commune

    OpenAIRE

    2009-01-01

    The aim of the study was to analyse and assess the agricultural activity in the Oleśnica commune. The representative rural property owner was a secondary-educated 43-year old man. Over 70% of respondents demonstrated their willingness to expand by purchasing or renting land and also to develop infrastructure. Agricultural activities within this area were focused mainly on plant-growing, which was preferable due to sustained tide of the market. Arable land was the dominating land type and the ...

  9. Fundamentos de la tecnología OLED

    OpenAIRE

    Chamorro Posada, Pedro; Martín Gil, Jesús; Martín Ramos, Pablo; Navas García, Luis Manuel

    2008-01-01

    Producción Científica Este libro constituye una introducción a la tecnología OLED (Organic Light Emitting Diode), toda vez que cubre aspectos fundamentales sobre la estructura, propiedades, técnicas de fabricación, caracterización, aplicaciones y situación en el mercado de estos dispositivos. Ha sido diseñado como libro de consulta para alumnos de últimos cursos de Física, Química, Ingeniería Química, Ciencia de Materiales, Ingeniería Electrónica e Ingeniería de Telecomunica...

  10. Stacked white OLED having separate red, green and blue sub-elements

    Energy Technology Data Exchange (ETDEWEB)

    Forrest, Stephen; Qi, Xiangfei; Slootsky, Michael

    2016-06-28

    The present invention relates to efficient organic light emitting devices (OLEDs). More specifically, the present invention relates to white-emitting OLEDs, or WOLEDs. The devices of the present invention employ three emissive sub-elements, typically emitting red, green and blue, to sufficiently cover the visible spectrum. The sub-elements are separated by charge generating layers.

  11. Flexible barrier technology for enabling rollable AMOLED displays and upscaling flexible OLED lighting

    NARCIS (Netherlands)

    Li, F.M.; Unnikrishnan, S.; Weijer, P. van de; Assche, F. van; Shen, J.; Ellis, T.; Manders, W.; Akkerman, H.; Bouten, P.; Mol, A.M.B. van

    2013-01-01

    The availability of a high performance thin-film barrier is the most critical challenge in upscaling and commercializing flexible OLED products. We report a flexible thin-film-barrier technology that meets lifetime specifications for OLED lighting, and demonstrate it in rollable QVGA a-IGZO AMOLED

  12. Organic Light-Emitting Devices (OLEDS) and Their Optically Detected Magnetic Resonance (ODMR)

    Energy Technology Data Exchange (ETDEWEB)

    Gang Li

    2003-12-12

    Organic Light-Emitting Devices (OLEDs), both small molecular and polymeric have been studied extensively since the first efficient small molecule OLED was reported by Tang and VanSlyke in 1987. Burroughes' report on conjugated polymer-based OLEDs led to another track in OLED development. These developments have resulted in full color, highly efficient (up to {approx} 20% external efficiency 60 lm/W power efficiency for green emitters), and highly bright (> 140,000 Cd/m{sup 2} DC, {approx}2,000,000 Cd/m{sup 2} AC), stable (>40,000 hr at 5 mA/cm{sup 2}) devices. OLEDs are Lambertian emitters, which intrinsically eliminates the view angle problem of liquid crystal displays (LCDs). Thus OLEDs are beginning to compete with the current dominant LCDs in information display. Numerous companies are now active in this field, including large companies such as Pioneer, Toyota, Estman Kodak, Philipps, DuPont, Samsung, Sony, Toshiba, and Osram, and small companies like Cambridge Display Technology (CDT), Universal Display Corporation (UDC), and eMagin. The first small molecular display for vehicular stereos was introduced in 1998, and polymer OLED displays have begun to appear in commercial products. Although displays are the major application for OLEDs at present, they are also candidates for nest generation solid-state lighting. In this case the light source needs to be white in most cases. Organic transistors, organic solar cells, etc. are also being developed vigorously.

  13. GATEWAY Demonstrations: OLED Lighting in the Offices of DeJoy, Knauf & Blood, LLP

    Energy Technology Data Exchange (ETDEWEB)

    Miller, Naomi J. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2017-07-24

    At the offices of the accounting firm of DeJoy, Knauf & Blood, LLP in Rochester, NY, the GATEWAY program evaluated a new lighting system that incorporates a number of different OLED luminaires. Evaluation of the OLED products included efficacy performance, field measurements of panel color, flicker measurements, and staff feedback.

  14. GATEWAY Demonstrations: OLED Lighting in the Offices of Aurora Lighting Design, Inc.

    Energy Technology Data Exchange (ETDEWEB)

    Miller, Naomi J. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2016-03-31

    At the offices of Aurora Lighting Design, Inc., in Grayslake, IL, the GATEWAY program conducted its first investigation involving OLED lighting. The project experienced several challenges, but also highlighted a number of promising attributes – which indicate that with continued improvements in efficacy, longevity, size, and flexibility, OLEDs could provide a new tool for creative and effective lighting.

  15. Making Image More Energy Efficient for OLED Smart Devices

    Directory of Open Access Journals (Sweden)

    Deguang Li

    2016-01-01

    Full Text Available Now, more and more mobile smart devices are emerging massively; energy consumption of these devices has become an important consideration due to the limitation of battery capacity. Displays are the dominant energy consuming component of battery-operated devices, giving rise to organic light-emitting diode (OLED as a new promising display technology, which consumes different power when displaying different content due to their emissive nature. Based on this property, we propose an approach to improve image energy efficiency on OLED displays by perceiving image content. The key idea of our approach is to eliminate undesired details while preserving the region of interest of the image by leveraging the color and spatial information. First, we use edge detection algorithm to extract region of interest (ROI of an image. Next, we gradually change luminance and saturation of region of noninterest (NON-ROI of the image. Then we perform detailed experiment and case study to validate our approach; experiment results show that our approach can save 22.5% energy on average while preserving high quality of the image.

  16. Recovery Act: Low Cost Integrated Substrate for OLED Lighting Development

    Energy Technology Data Exchange (ETDEWEB)

    Benton, Scott [PPG Industries, Inc., Pittsburgh, PA (United States); Bhandari, Abhinav [PPG Industries, Inc., Pittsburgh, PA (United States)

    2012-12-26

    PPG pursued the development of an integrated substrate, including the anode, external, and internal extraction layers. The objective of PPG's program was to achieve cost reductions by displacing the existing expensive borosilicate or double-side polished float glass substrates and developing alternative electrodes and scalable light extraction layer technologies through focused and short-term applied research. One of the key highlights of the project was proving the feasibility of using PPG's high transmission Solarphire® float glass as a substrate to consistently achieve organic lightemitting diode (OLED) devices with good performance and high yields. Under this program, four low-cost alternatives to the Indium Tin Oxide (ITO) anode were investigated using pilot-scale magnetron sputtered vacuum deposition (MSVD) and chemical vapor deposition (CVD) technologies. The anodes were evaluated by fabricating small and large phosphorescent organic lightemitting diode (PHOLED) devices at Universal Display Corporation (UDC). The device performance and life-times comparable to commercially available ITO anodes were demonstrated. A cost-benefit analysis was performed to down-select two anodes for further low-cost process development. Additionally, PPG developed and evaluated a number of scalable and compatible internal and external extraction layer concepts such as scattering layers on the outside of the glass substrate or between the transparent anode and the glass interface. In one external extraction layer (EEL) approach, sol-gel sprayed pyrolytic coatings were deposited using lab scale equipment by hand or automated spraying of sol-gel solutions on hot glass, followed by optimizing of scattering with minimal absorption. In another EEL approach, PPG tested large-area glass texturing by scratching a glass surface with an abrasive roller and acid etching. Efficacy enhancements of 1.27x were demonstrated using white PHOLED devices for 2.0mm substrates which are

  17. Effect of thermal annealing Super Yellow emissive layer on efficiency of OLEDs

    Science.gov (United States)

    Burns, Samantha; MacLeod, Jennifer; Trang Do, Thu; Sonar, Prashant; Yambem, Soniya D.

    2017-01-01

    Thermal annealing of the emissive layer of an organic light emitting diode (OLED) is a common practice for solution processable emissive layers and reported annealing temperatures varies across a wide range of temperatures. We have investigated the influence of thermal annealing of the emissive layer at different temperatures on the performance of OLEDs. Solution processed polymer Super Yellow emissive layers were annealed at different temperatures and their performances were compared against OLEDs with a non-annealed emissive layer. We found a significant difference in the efficiency of OLEDs with different annealing temperatures. The external quantum efficiency (EQE) reached a maximum of 4.09% with the emissive layer annealed at 50 °C. The EQE dropped by ~35% (to 2.72%) for OLEDs with the emissive layers annealed at 200 °C. The observed performances of OLEDs were found to be closely related to thermal properties of polymer Super Yellow. The results reported here provide an important guideline for processing emissive layers and are significant for OLED and other organic electronics research communities. PMID:28106082

  18. Agricultural activities in the Oleśnica commune

    Directory of Open Access Journals (Sweden)

    Małgorzata Borkowska

    2009-01-01

    Full Text Available The aim of the study was to analyse and assess the agricultural activity in the Oleśnica commune. The representative rural property owner was a secondary-educated 43-year old man. Over 70% of respondents demonstrated their willingness to expand by purchasing or renting land and also to develop infrastructure. Agricultural activities within this area were focused mainly on plant-growing, which was preferable due to sustained tide of the market. Arable land was the dominating land type and the main products were: grains, potatoes and rape. Introduced in farms innovations were focused on increasing ef-fectiveness of plant-growing and improving the quality of work in rural properties. These innovations were expected to increase income and, in longer term, make the rural production more competitive on the European market.

  19. Efficiency and Stimulated Emission in Quarter Wave OLEDS

    CERN Document Server

    Nelson, Mitchell C

    2016-01-01

    Quarter-wave OLEDS are microcavity devices that can operate in the low finesse limit and achieve high efficiency (> 300 lm/W) by using interference to reduce the onset current for the transition to stimulated emission. In this work we study the transition to stimulated emission and compare the kinetics and electrical properties of conventional and quarter-wave devices. We show that suppression of spontaneous emission into the vertical mode can result in a sharp transition to stimulated emission at (\\gamma /eV)I ~ N_se/\\tau_sp where N_se/\\tau_sp is determined by optical parameters, and we find a previously observed electrical signature for the transition where the excited state population becomes fixed at low current density. We then study the role of loss mechanisms in the quarter-wave configuration and conclude with some requirements for practical device.

  20. Electroluminescence property of organic light emitting diode (OLED)

    Energy Technology Data Exchange (ETDEWEB)

    Özdemir, Orhan; Kavak, Pelin; Saatci, A. Evrim; Gökdemir, F. Pınar; Menda, U. Deneb; Can, Nursel; Kutlu, Kubilay [Yıldız Technical University, Department of Physics, Esenler, Istanbul (Turkey); Tekin, Emine; Pravadalı, Selin [National Metrology Instıtute of Turkey (TUBİTAK-UME), Kocaeli (Turkey)

    2013-12-16

    Transport properties of electrons and holes were investigated not only in a anthracene-containing poly(p-phenylene-ethynylene)- alt - poly(p-phenylene-vinylene) (PPE-PPV) polymer (AnE-PVstat) light emitting diodes (OLED) but also in an ITO/Ag/polymer/Ag electron and ITO/PEDOT:PSS/polymer/Au hole only devices. Mobility of injected carriers followed the Poole-Frenkel type conduction mechanism and distinguished in the frequency range due to the difference of transit times in admittance measurement. Beginning of light output took place at the turn-on voltage (or flat band voltage), 1.8 V, which was the difference of energy band gap of polymer and two barrier offsets between metals and polymer.

  1. Ole Ivar Lovaas - His Life, Merits and Legacy

    Directory of Open Access Journals (Sweden)

    Kamil ÖZERK

    2016-12-01

    Full Text Available Ole Ivar Lovaas (1927-2010 is known worldwide for his research within the field of Applied Behavior Analysis, and is probably the most influential researcher within the field of treatment of children with autism. In the first part of this biographically oriented paper, we inform the readers about his family background, childhood, elementary and secondary school years, and his adolescent years during World War II in his first homeland, Norway, based on archival research and interviews. In the second part, we describe his life, academic studies, research and successes in his second home country, the United States. Finally, we briefly recount the impact Lovaas has had on the field of Applied Behavior Analysis and the treatment of and services for children with autism spectrum disorders in Norway and in the North America.

  2. OLED devices for signage applications: a review of recent advances and remaining challenges

    Science.gov (United States)

    Sprengard, Ruediger; Bonrad, Klaus; Daeubler, Thomas K.; Frank, T.; Hagemann, V.; Koehler, I.; Pommerehne, J.; Ottermann, Clemens R.; Voges, Frank; Vingerling, B.

    2004-11-01

    Reported efficiency records of >70 lm/W and the community's performance roadmaps indicate the potential of OLEDs (Organic Light Emitting Diodes) for use in general lighting applications. Within a shorter timeframe, OLED technology may be exploited for signage applications. Key differences of OLED signage devices to display and lighting devices are discussed. Recent results are presented on large area device design, polymer deposition technology, device and material performance, and encapsulation technology. Finally we discuss performance and cost targets for potential applications indicating the main challenges for future developments.

  3. Kuu plaat : Lauri Saatpalu ja Katrin Mandel "Sa oled hea". Plaadid kauplusest Lasering

    Index Scriptorium Estoniae

    2005-01-01

    Heliplaatidest: Lauri Saatpalu ja Katrin Mandel "Sa oled hea", Goldfrapp "Supernature", Ultima Thule "Ingel ja suli", Sigur Ros "Takk...", Franz Ferdinand "You Could Have It So Much Better", Ans.Andur "Tuled peale"

  4. Soft lithography microlens fabrication and array for enhanced light extraction from organic light emitting diodes (OLEDs)

    Science.gov (United States)

    Leung, Wai Y.; Park, Joong-Mok; Gan, Zhengqing; Constant, Kristen P.; Shinar, Joseph; Shinar, Ruth; ho, Kai-Ming

    2014-06-03

    Provided are microlens arrays for use on the substrate of OLEDs to extract more light that is trapped in waveguided modes inside the devices and methods of manufacturing same. Light extraction with microlens arrays is not limited to the light emitting area, but is also efficient in extracting light from the whole microlens patterned area where waveguiding occurs. Large microlens array, compared to the size of the light emitting area, extract more light and result in over 100% enhancement. Such a microlens array is not limited to (O)LEDs of specific emission, configuration, pixel size, or pixel shape. It is suitable for all colors, including white, for microcavity OLEDs, and OLEDs fabricated directly on the (modified) microlens array.

  5. Development of functional nano-particle layer for highly efficient OLED

    Science.gov (United States)

    Lee, Jae-Hyun; Kim, Min-Hoi; Choi, Haechul; Choi, Yoonseuk

    2015-12-01

    Organic light emitting diodes (OLEDs) are now widely commercialized in market due to many advantages such as possibility of making thin or flexible devices. Nevertheless there are still several things to obtain the high quality flexible OLEDs, one of the most important issues is the light extraction of the device. It is known that OLEDs have the typical light loss such as the waveguide loss, plasmon absorption loss and internal total reflection. In this paper, we demonstrate the one-step processed light scattering films with aluminum oxide nano-particles and polystyrene matrix composite to achieve highly efficient OLEDs. Optical characteristics and surface roughness of light scattering film was optimized by changing the mixing concentration of Al2O3 nano-particles and investigated with the atomic force microscopy and hazemeter, respectively.

  6. Multi-Periodic Photonic Crystal Out-Coupling Layers for Flexible OLEDs

    DEFF Research Database (Denmark)

    Kluge, Christian; Pradana, Arfat; Adam, Jost

    2014-01-01

    Waveguide mode extraction with multi-periodic photonic crystals is studied in experiment and finite-difference time-domain (FDTD) simulations. Flexible nanostructured organic light-emitting diodes (OLEDs) are fabricated by UV nanoimprint lithography.......Waveguide mode extraction with multi-periodic photonic crystals is studied in experiment and finite-difference time-domain (FDTD) simulations. Flexible nanostructured organic light-emitting diodes (OLEDs) are fabricated by UV nanoimprint lithography....

  7. Dual side transparent OLED 3D display using Gabor super-lens

    Science.gov (United States)

    Chestak, Sergey; Kim, Dae-Sik; Cho, Sung-Woo

    2015-03-01

    We devised dual side transparent 3D display using transparent OLED panel and two lenticular arrays. The OLED panel is sandwiched between two parallel confocal lenticular arrays, forming Gabor super-lens. The display provides dual side stereoscopic 3D imaging and floating image of the object, placed behind it. The floating image can be superimposed with the displayed 3D image. The displayed autostereoscopic 3D images are composed of 4 views, each with resolution 64x90 pix.

  8. Multi-Periodic Photonic Crystal Out-Coupling Layers for Flexible OLEDs

    DEFF Research Database (Denmark)

    Kluge, Christian; Pradana, Arfat; Adam, Jost;

    2014-01-01

    Waveguide mode extraction with multi-periodic photonic crystals is studied in experiment and finite-difference time-domain (FDTD) simulations. Flexible nanostructured organic light-emitting diodes (OLEDs) are fabricated by UV nanoimprint lithography.......Waveguide mode extraction with multi-periodic photonic crystals is studied in experiment and finite-difference time-domain (FDTD) simulations. Flexible nanostructured organic light-emitting diodes (OLEDs) are fabricated by UV nanoimprint lithography....

  9. GATEWAY Report Brief: OLED Lighting in the Offices of Aurora Lighting Design, Inc.

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2016-05-31

    Summary of a GATEWAY report evaluation at the offices of Aurora Lighting Design, Inc., in Grayslake, IL, where the GATEWAY program conducted its first investigation involving OLED lighting. The project experienced several challenges, but also highlighted a number of promising attributes – which indicate that with continued improvements in efficacy, longevity, size, and flexibility, OLEDs could provide a new tool for creative and effective lighting.

  10. Phosphorescent OLEDs: Sky-Blue Phosphorescent OLEDs with 34.1% External Quantum Efficiency Using a Low Refractive Index Electron Transporting Layer (Adv. Mater. 24/2016).

    Science.gov (United States)

    Shin, Hyun; Lee, Jeong-Hwan; Moon, Chang-Ki; Huh, Jin-Suk; Sim, Bomi; Kim, Jang-Joo

    2016-06-01

    J.-J. Kim and co-workers achieve highly efficient blue organic light-emitting diodes (OLEDs) using a low-refractive-index layer. As described on page 4920, an external quantum efficiency over 34% is achieved, owing to the low refractive index of the materials. A milepost and a shining entrance of the castle are the metaphor indicating the way to highly efficient blue OLEDs. On the way to the castle, the depicted chemical structures serve as the light-emitting layer. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  11. The electrodeposition of multilayers on a polymeric substrate in Flexible Organic Light Emitting Diode (OLED)

    Science.gov (United States)

    Guedes, Andre F. S.; Guedes, Vilmar P.; Tartari, Simone; Cunha, Idaulo Jose

    2016-09-01

    The development of Organic Light Emitting Diode (OLED), using an optically transparent substrate material and organic semiconductor materials, has been widely utilized by the electronic industry when producing new technological products. The OLED are the base Poly(3,4-ethylenedioxythiophene), PEDOT, Poly(p-phenylenevinylene), PPV, and Polyaniline, PANI, were deposited in Indium Tin Oxide, ITO, and characterized by UV-Visible Spectroscopy (UV-Vis), Optical Parameters (OP) and Scanning Electron Microscopy (SEM). In addition, the thin film obtained by the deposition of PANI, prepared in perchloric acid solution, was identified through PANI-X1. The result obtained by UV-Vis has demonstrated that the PET/ITO/PEDOT/PPV/PANI-X1/Al layer does not have displacement of absorption for wavelengths greaters after spin-coating and electrodeposition. Thus, the spectral irradiance of the OLED informed the irradiance of 100 W/m2, and this result, compared with the standard Light Emitting Diode (LED), has indicated that the OLED has higher irradiance. After 1200 hours of electrical OLED tests, the appearance of nanoparticles visible for images by SEM, to the migration process of organic semiconductor materials, was present, then. Still, similar to the phenomenon of electromigration observed in connections and interconnections of microelectronic devices, the results have revealed a new mechanism of migration, which raises the passage of electric current in OLED.

  12. Novel Smart Windows Based on Transparent Phosphorescent OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Brian D' Andrade; Stephen Forest

    2006-09-15

    In this program, Universal Display Corporation (UDC) and Princeton University developed the use of white transparent phosphorescent organic light emitting devices (PHOLEDs{trademark}) to make low-cost ''transparent OLED (TOLED) smart windows'', that switch rapidly from being a highly efficient solid-state light source to being a transparent window. PHOLEDs are ideal for large area devices, and the UDC-Princeton team has demonstrated white PHOLEDs with efficiencies of >24 lm/W at a luminance of 1,000 cd/m{sup 2}. TOLEDs have transparencies >70% over the visible wavelengths of light, but their transparency drops to less than 5% for wavelengths shorter than 350 nm, so they can also be used as ultraviolet (UV) light filters. In addition to controlling the flow of UV radiation, TOLEDs coupled with an electromechanical or electrically activated reflecting shutter on a glass window can be employed to control the flow of heat from infrared (IR) radiation by varying the reflectance/transparency of the glass for wavelengths greater than 800nm. One particularly attractive shutter technology is reversible electrochromic mirrors (REM). Our goal was therefore to integrate two innovative concepts to meet the U.S. Department of Energy goals: high power efficiency TOLEDs, plus electrically controlled reflectors to produce a ''smart window''. Our efforts during this one year program have succeeded in producing a prototype smart window shown in the Fig. I, below. The four states of the smart window are pictured: reflective with lamp on, reflective with lamp off, transparent with lamp on, and transparent with lamp off. In the transparent states, the image is an outdoor setting viewed through the window. In the reflective states, the image is an indoor setting viewed via reflection off the window. We believe that the integration of our high efficiency white phosphorescent TOLED illumination source, with electrically activated shutters represents

  13. Surface treatment on polyethylenimine interlayer to improve inverted OLED performance

    Science.gov (United States)

    Wei, Chang-Ting; Zhuang, Jin-Yong; Chen, Ya-Li; Zhang, Dong-Yu; Su, Wen-Ming; Cui, Zheng

    2016-10-01

    Polyethylenimine (PEI) interlayer rinsing with different solvents for inverted organic light emitting diodes (OLEDs) is systematically studied in this paper. In comparison with the pristine one, the maximum current efficiency (CE max) and power efficiency (PE max) are enhanced by 21% and 22% for the device rinsing by ethylene glycol monomethyl ether (EEA). Little effect is found on the work function of the PEI interlayer rinsed by deionized water (DI), ethanol (EtOH), and EEA. On the other hand, the surface morphologies of PEI through different solvent treatments are quite different. Our results indicates that the surface morphology is the key to improving the device performance for IOLED as the work function of PEI keeps stable. Project supported by the National Key Basic Research Project of China (Grant No. 2015CB351901), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA09020201), the Youth Innovation Promotion Association of Chinese Academy of Sciences (Grant No. 2013206), the National Natural Science Foundation of China (Grant No. 21402233), and the Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK2012631 and BK20140387).

  14. Los migrantes españoles retornados a Granada

    Directory of Open Access Journals (Sweden)

    Francisco JIMÉNEZ- BAUTISTA

    2010-01-01

    Full Text Available Se expone el estudio de migrantes españoles que se fueron al extranjero y retornaron a Granada, España. La obtención de la información se llevó a cabo por medio de una encuesta realizada en la ciudad de Granada durante el periodo 2003-2005, teniendo como categoría principal la de 'emigrantes internacionales retornados'. El estudio aborda dimensiones demográfi cas, sociales, económicas, políticas y culturales, además, de religiosas, familiares, etc., que se tejen en ese circuito migratorio de ida a otro país y de regreso al de origen, mediado por redes migratorias, cadenas de ayuda en el retorno, asociaciones de ayuda al retornado, y condiciones de reinserción y reintegración social en el nuevo espacio de un hábitat caracterizado por ser el lugar de origen, pero que tiene condiciones diferentes a las que prevalecían cuando partieron.

  15. Creation of a U.S. Phosphorescent OLED Lighting Panel Manufacturing Facility

    Energy Technology Data Exchange (ETDEWEB)

    Hack, Michael

    2013-09-30

    Universal Display Corporation (UDC) has pioneered high efficacy phosphorescent OLED (PHOLED™) technology to enable the realization of an exciting new form of high quality, energy saving solid-date lighting. In laboratory test devices, we have demonstrated greater than 100 lm/W conversion efficacy. In this program, Universal Display will demonstrate the scalability of its proprietary UniversalPHOLED technology and materials for the manufacture of white OLED lighting panels that meet commercial lighting targets. Moser Baer Technologies will design and build a U.S.- based pilot facility. The objective of this project is to establish a pilot phosphorescent OLED (PHOLED) manufacturing line in the U.S. Our goal is that at the end of the project, prototype lighting panels could be provided to U.S. luminaire manufacturers for incorporation into products to facilitate the testing of design concepts and to gauge customer acceptance, so as to facilitate the growth of the embryonic U.S. OLED lighting industry. In addition, the team will provide a cost of ownership analysis to quantify production costs including OLED performance metrics which relate to OLED cost such as yield, materials usage, cycle time, substrate area, and capital depreciation. This project was part of a new DOE initiative designed to help establish and maintain U.S. leadership in this program will support key DOE objectives by showing a path to meet Department of Energy Solid-State Lighting Manufacturing Roadmap cost targets, as well as meeting its efficiency targets by demonstrating the energy saving potential of our technology through the realization of greater than 76 lm/W OLED lighting panels by 2012.

  16. Efficient, inkjet-printed TADF-OLEDs with an ultra-soluble NHetPHOS complex

    Science.gov (United States)

    Verma, Anand; Zink, Daniel M.; Fléchon, Charlotte; Leganés Carballo, Jaime; Flügge, Harald; Navarro, José M.; Baumann, Thomas; Volz, Daniel

    2016-03-01

    Using printed organic light-emitting diodes (OLEDs) for lighting, smart-packaging and other mass-market applications has remained a dream since the first working OLED devices were demonstrated in the late 1980s. The realization of this long-term goal is hindered by the very low abundance of iridium and problems when using low-cost wet chemical production processes. Abundant, solution-processable Cu(I) complexes promise to lower the cost of OLEDs. A new copper iodide NHetPHOS emitter was prepared and characterized in solid state with photoluminescence spectroscopy and UV photoelectron spectroscopy under ambient conditions. The photoluminescence quantum efficiency was determined as 92 ± 5 % in a thin film with yellowish-green emission centered around 550 nm. This puts the material on par with the most efficient copper complexes known so far. The new compound showed superior solubility in non-polar solvents, which allowed for the fabrication of an inkjet-printed OLED device from a decalin-based ink formulation. The emission layer could be processed under ambient conditions and was annealed under air. In a very simple stack architecture, efficiency values up to 45 cd A-1 corresponding to 13.9 ± 1.9 % EQE were achieved. These promising results open the door to printed, large-scale OLED devices with abundant copper emitters.

  17. Mixed-ligand Al complex-a new approach for more high efficient OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Petrova, Petia K., E-mail: petia@clf.bas.bg [Institute of Optical Materials and Technologies ' Acad. J. Malinowski' , Bulgarian Academy of Sciences, Acad. G Bonchev st., bl. 109, 1113 Sofia (Bulgaria); Tomova, Reni L.; Stoycheva-Topalova, Rumiana T. [Institute of Optical Materials and Technologies ' Acad. J. Malinowski' , Bulgarian Academy of Sciences, Acad. G Bonchev st., bl. 109, 1113 Sofia (Bulgaria); Kaloyanova, Stefka S.; Deligeorgiev, Todor G. [Applied Organic Chemistry, Faculty of Chemistry, University of Sofia, Sofia 1164 (Bulgaria)

    2012-02-15

    The mixed-ligand Aluminum bis(8-hydroxyquinoline) acetylacetonate (Alq{sub 2}Acac) complex was presented and its performance as electroluminescent and electron transporting layer for OLED was studied. The photophysical properties of the novel complex were investigated and compared with the properties of the parent Alq{sub 3}. Highly efficient OLED based on the mixed-ligand Al complex was developed with two times higher luminescence and efficiency compared to the identical OLED based on the conventional Alq{sub 3} The better performance of the devices make the novel Al complex a very promising material for OLEDs. - Highlights: Black-Right-Pointing-Pointer A novel electroluminescent Alq{sub 2}Acac complex is presented as material for OLED. Black-Right-Pointing-Pointer Electroluminescent emission of Alq{sub 2}Acac is very similar to that of commercial Alq{sub 3}. Black-Right-Pointing-Pointer Devices with Alq{sub 2}Acac show better characteristics compared to those with Alq{sub 3}.

  18. Active matrix organic light emitting diode (OLED)-XL life test results

    Science.gov (United States)

    Fellowes, David A.; Wood, Michael V.; Hastings, Arthur R., Jr.; Ghosh, Amalkumar P.; Prache, Olivier

    2008-04-01

    OLED displays have been known to exhibit high levels of performance with regards to contrast, response time, uniformity, and viewing angle, but a lifetime improvement has been perceived to be essential for broadening the applications of OLED's in the military and in the commercial market. As a result of this need, the US Army and eMagin Corporation established a Cooperative Research and Development Agreement (CRADA) to improve the lifetime of OLED displays. In 2006, eMagin Corporation developed long-life OLED-XL devices for use in their AMOLED microdisplays for head-worn applications, and RDECOM CERDEC NVESD ran life tests on these displays, finding over 200% lifetime improvement for the XL devices over the standard displays. Early results were published at the 2007 SPIE Defense and Security Symposium. Further life testing of XL and standard devices at ambient conditions and at high temperatures will be presented this year along with a recap of previous data. This should result in a better understanding of the applicability of AMOLEDs in military and commercial head mounted systems: where good fits are made, and where further development might be needed. This is a continuation of the paper "Life test results of OLED-XL long-life devices for use in active matrix organic light emitting diode (AMOLED) displays for head mounted applications" presented at SPIE DSS in 2007.

  19. Narrow Bandwidth Top-Emitting OLEDs Designed for Rhodamine 6G Excitation in Biological Sensing Applications

    Directory of Open Access Journals (Sweden)

    Matthias Jahnel

    2015-11-01

    Full Text Available Organic light emitting diodes (OLED are promising candidates offering in optical sensor applications to detect different gas compositions and excitable optical marker groups in chemical and biological processes. They enable attractive solutions for monitoring the gas phase composition of e.g., dissolved molecular oxygen (O2 species in bio reactors or excitation of fluorescent markers. In this work, we investigate different OLED devices for biomedical applications to excite the fluorescent dye rhodamine 6G (R6G. The OLED devices are built in top emission geometry comprising a distributed Bragg reflector (DBR acting as optical mirror. The OLED is optimized to provide a very narrow emission characteristic to excite the R6G at 530 nm wavelength and enabling the possibility to minimize the optical crosstalk between the OLED electroluminescence and the fluorescence of R6G. The DBR includes a thin film encapsulation and enables the narrowing of the spectral emission band depending on the number of DBR pairs. The comparison between optical simulation data and experimental results exhibits good agreement and proves process stability.

  20. Selvrapporteret helbred blandt skoleelever i Norden

    DEFF Research Database (Denmark)

    Due, P; Holstein, B E; Marklund, U

    1991-01-01

    of the children have experienced stomach-ache, back pain, bad temper and feeling dizzy. There are minor variations between countries and between age groups, but in almost all age groups in all countries more girls than boys report these symptoms. Approximately every fourth pupil have used medication against...

  1. Ungdomsarbeidsløshet i Norden

    DEFF Research Database (Denmark)

    Albæk, Karsten; Asplund, Rita; Barth, Erling

    2015-01-01

    Denne artikkelen tar for seg ungdomsarbeidsløshet målt på flere måter. For det første spiller det en stor rolle om man regner arbeidsløsheten for ungdom i prosent av befolkningen eller i prosent av arbeidsstyrken. For det andre gjør det stor forskjell om man tar med blant de arbeidsløse ungdom so...

  2. Pure RGB Emissions Based on a White OLED Combined with Optical Colour Filters

    Institute of Scientific and Technical Information of China (English)

    WU Xiao-Ming; HUA Yu-Lin; WANG Zhao-Qi; YIN Shou-Gen; ZHENG Jia-Jin; DENG Jia-Chun; M. C. Petty

    2006-01-01

    @@ We report on a white organic light emitting device (OLED) with a single light emitting layer consisting of a greenish-white emitting host bis-(2-(2-hydroxyphenyl) benzothiazole)zinc (Zn(BTZ)2) and an orange-red dopant 5,6,11,12-tetraphenylnaphthacene (rubrene). The Commission Internationale De L'Eclairage (CIE) coordinates, external quantum efficiency, and brightness of the white OLED are (0.341, 0.334), 0.63% and 4000 Cd/m2 at the bias of 20 V, respectively. Pure red-green-blue (RGB) emissions have been successfully achieved from the white OLED combined well with several built-in optical colour filters (CFs). The CIE coordinates of the white mixture calculated in theory are very close to the coordinates of the white mixture which recorded with spectrophotometer in practice.

  3. Considerable improvement in the stability of solution processed small molecule OLED by annealing

    Energy Technology Data Exchange (ETDEWEB)

    Mao Guilin [Key Laboratory of Photonics Technology for Information, Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi' an Jiaotong University, Xi' an, 710049 (China); Wu Zhaoxin, E-mail: zhaoxinwu@mail.xjtu.edu.cn [Key Laboratory of Photonics Technology for Information, Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi' an Jiaotong University, Xi' an, 710049 (China); He Qiang [Key Laboratory of Photonics Technology for Information, Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi' an Jiaotong University, Xi' an, 710049 (China); Department of UAV, Wuhan Ordnance Noncommissioned Officers Academy, Wuhan, 430075 (China); Jiao Bo; Xu Guojin; Hou Xun [Key Laboratory of Photonics Technology for Information, Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi' an Jiaotong University, Xi' an, 710049 (China); Chen Zhijian; Gong Qihuang [State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing, 100871 (China)

    2011-06-15

    We investigated the annealing effect on solution processed small organic molecule organic films, which were annealed with various conditions. It was found that the densities of the spin-coated (SC) films increased and the surface roughness decreased as the annealing temperature rose. We fabricated corresponding organic light emitting diodes (OLEDs) by spin coating on the same annealing conditions. The solution processed OLEDs show the considerable efficiency and stability, which were prior or equivalent to the vacuum-deposited (VD) counterparts. Our research shows that annealing process plays a key role in prolonging the lifetime of solution processed small molecule OLEDs, and the mechanism for the improvement of the device performance upon annealing was also discussed.

  4. OLED Fundamentals: Materials, Devices, and Processing of Organic Light-Emitting Diodes

    Energy Technology Data Exchange (ETDEWEB)

    Blochwitz-Nimoth, Jan; Bhandari, Abhinav; Boesch, Damien; Fincher, Curtis R.; Gaspar, Daniel J.; Gotthold, David W.; Greiner, Mark T.; Kido, Junji; Kondakov, Denis; Korotkov, Roman; Krylova, Valentina A.; Loeser, Falk; Lu, Min-Hao; Lu, Zheng-Hong; Lussem, Bjorn; Moro, Lorenza; Padmaperuma, Asanga B.; Polikarpov, Evgueni; Rostovtsev, Vsevolod V.; Sasabe, Hisahiro; Silverman, Gary; Thompson, Mark E.; Tietze, Max; Tyan, Yuan-Sheng; Weaver, Michael; Xin , Xu; Zeng, Xianghui

    2015-05-26

    What is an organic light emitting diode (OLED)? Why should we care? What are they made of? How are they made? What are the challenges in seeing these devices enter the marketplace in various applications? These are the questions we hope to answer in this book, at a level suitable for knowledgeable non-experts, graduate students and scientists and engineers working in the field who want to understand the broader context of their work. At the most basic level, an OLED is a promising new technology composed of some organic material sandwiched between two electrodes. When current is passed through the device, light is emitted. The stack of layers can be very thin and has many variations, including flexible and/or transparent. The organic material can be polymeric or composed small molecules, and may include inorganic components. The electrodes may consist of metals, metal oxides, carbon nanomaterials, or other species, though of course for light to be emitted, one electrode must be transparent. OLEDs may be fabricated on glass, metal foils, or polymer sheets (though polymeric substrates must be modified to protect the organic material from moisture or oxygen). In any event, the organic material must be protected from moisture during storage and operation. A control circuit, the exact nature of which depends on the application, drives the OLED. Nevertheless, the control circuit should have very stable current control to generate uniform light emission. OLEDs can be designed to emit a single color of light, white light, or even tunable colors. The devices can be switched on and off very rapidly, which makes them suitable for displays or for general lighting. Given the amazing complexity of the technical and design challenges for practical OLED applications, it is not surprising that applications are still somewhat limited. Although organic electroluminescence is more than 50 years old, the modern OLED field is really only about half that age – with the first high

  5. GATEWAY Report Brief: Evaluating OLED Lighting in the Accounting Office of DeJoy, Knauf & Blood LLP

    Energy Technology Data Exchange (ETDEWEB)

    None

    2017-08-21

    Summary of GATEWAY report evaluating a new lighting system, at the offices of the accounting firm of DeJoy, Knauf & Blood, LLP in Rochester, NY, that incorporates a number of different OLED luminaires. Evaluation of the OLED products included efficacy performance, field measurements of panel color, flicker measurements, and staff feedback.

  6. Organic Light-Emitting Diodes (OLEDs) and Optically-Detected Magnetic Resonance (ODMR) studies on organic materials

    Energy Technology Data Exchange (ETDEWEB)

    Cai, Min [Iowa State Univ., Ames, IA (United States)

    2011-01-01

    Organic semiconductors have evolved rapidly over the last decades and currently are considered as the next-generation technology for many applications, such as organic light-emitting diodes (OLEDs) in flat-panel displays (FPDs) and solid state lighting (SSL), and organic solar cells (OSCs) in clean renewable energy. This dissertation focuses mainly on OLEDs. Although the commercialization of the OLED technology in FPDs is growing and appears to be just around the corner for SSL, there are still several key issues that need to be addressed: (1) the cost of OLEDs is very high, largely due to the costly current manufacturing process; (2) the efficiency of OLEDs needs to be improved. This is vital to the success of OLEDs in the FPD and SSL industries; (3) the lifetime of OLEDs, especially blue OLEDs, is the biggest technical challenge. All these issues raise the demand for new organic materials, new device structures, and continued lower-cost fabrication methods. In an attempt to address these issues, we used solution-processing methods to fabricate highly efficient small molecule OLEDs (SMOLEDs); this approach is costeffective in comparison to the more common thermal vacuum evaporation. We also successfully made efficient indium tin oxide (ITO)-free SMOLEDs to further improve the efficiency of the OLEDs. We employed the spin-dependent optically-detected magnetic resonance (ODMR) technique to study the luminescence quenching processes in OLEDs and organic materials in order to understand the intrinsic degradation mechanisms. We also fabricated polymer LEDs (PLEDs) based on a new electron-accepting blue-emitting polymer and studied the effect of molecular weight on the efficiency of PLEDs. All these studies helped us to better understand the underlying relationship between the organic semiconductor materials and the OLEDs’ performance, and will subsequently assist in further enhancing the efficiency of OLEDs. With strongly improved device performance (in addition to

  7. Blue and white light electroluminescence in a multilayer OLED using a new aluminium complex

    Indian Academy of Sciences (India)

    Pabitra K Nayak; Neeraj Agarwal; Farman Ali; Meghan P Patankar; K L Narasimhan; N Periasamy

    2010-11-01

    Synthesis, structure, optical absorption, emission and electroluminescence properties of a new blue emitting Al complex, namely, bis-(2-amino-8-hydroxyquinolinato), acetylacetonato Al(III) are reported. Multilayer OLED using the Al complex showed blue emission at 465 nm, maximum brightness of ∼ 425 cd/m2 and maximum current efficiency of 0.16 cd/A. Another multilayer OLED using the Al complex doped with phosphorescent Ir complex showed `white’ light emission, CIE coordinate (0.41, 0.35), maximum brightness of ∼ 970 cd/m2 and maximum current efficiency of 0.53 cd/A.

  8. Impacto del sector privado en la eficiencia de los aeropuertos españoles

    OpenAIRE

    Roberto Rendeiro Martín-Cejas; Pedro González de la Fe; Beatriz Tovar

    2008-01-01

    Este trabajo valora la eficiencia del sector privado en la provisión de servicios en los aeropuertos españoles. En primer lugar se revisa la evolución del modelo de gestión de aeropuertos a nivel internacional, destacándose aquellos aspectos que han tenido mayor impacto en los resultados económicos de la industria aeroportuaria. Posteriormente se describe la evolución del modelo de gestión de los aeropuertos españoles, valorando la participación del sector privado en la prestación de servicio...

  9. Enhanced light extraction in ITO-free OLEDs using double-sided printed electrodes

    Science.gov (United States)

    Reboud, Vincent; Khokhar, Ali Z.; Sepúlveda, Borja; Dudek, Damian; Kehoe, Tim; Cuffe, John; Kehagias, Nikolaos; Lira-Cantu, Mónica; Gadegaard, Nikolaj; Grasso, Valentina; Lambertini, Vito; Sotomayor Torres, Clivia M.

    2012-05-01

    We show how nanoimprint lithographic techniques are particularly suited for the realization of OLED device structures. We tested them to realize nanopatterned metallic electrodes containing photonic crystals to couple the light out and plasmonic crystals showing extraordinary transmission. At similar current densities, a two-fold electroluminescence is achieved with devices having double-sided structured metallic electrodes as compared to a control OLED with an ITO anode. The use of combined nanoimprint lithography processes has the potential to expand the performance range of various organic optoelectronic devices.

  10. España y los españoles

    Directory of Open Access Journals (Sweden)

    Caba, Rubén

    2011-10-01

    Full Text Available The author here argues in favour of the historical reality that we call Spain. To recognize the Cadiz Constitution of 1812 as the origin of present Spain, he maintains, does not imply that our country had no national identity before the 19th century. And to this effect he expounds the famous controversy between Americo Castro and Claudio Sánchez-Albornoz. Before the Arab invasion there were no “españoles”, since this word of provençal origin dates back to the 11th century, as Castro points out. However, it is also true that during the Roman as well the Gothic domination, the peninsular inhabitants were known as “hispani”, as Sánchez-Albornoz sarcastically alleges. In addition, this article includes a number of quotations from Latin, Gothic and Spanish writers of the Middle Ages and the Renaissance, references which bear witness to a feeling of belonging to an old country called “Hispania” or “España”.

    El autor aporta argumentos en favor de la realidad histórica que llamamos España. Sostiene que reconocer a la Constitución de Cádiz de 1812 como origen de la España política actual no implica que nuestro país careciera de identidad nacional antes del siglo XIX. Y expone la controversia de Américo Castro y de Claudio Sánchez-Albornoz sobre la génesis histórica de España para concluir que, si bien antes de la invasión árabe no había “españoles”, vocablo provenzal del siglo XI como advierte Castro, también es cierto que durante la dominación romana y goda los peninsulares eran “hispani”, como alega con sorna Sánchez-Albornoz. Además, se recogen citas de autores latinos, godos y españoles tanto medievales como renacentistas que testimonian su sentimiento de pertenecer a un viejo país llamado Hispania o España.

  11. Investigation of cross-linking characteristics of novel hole-transporting materials for solution-processed phosphorescent OLEDs

    Science.gov (United States)

    Lee, Jaemin; Ameen, Shahid; Lee, Changjin

    2016-04-01

    After the success of commercialization of the vacuum-evaporated organic light-emitting diodes (OLEDs), solutionprocessing or printing of OLEDs are currently attracting much research interests. However, contrary to various kinds of readily available vacuum-evaporable OLED materials, the solution-processable OLED materials are still relatively rare. Hole-transporting layer (HTL) materials for solution-processed OLEDs are especially limited, because they need additional characteristics such as cross-linking to realize multilayer structures in solution-processed OLEDs, as well as their own electrically hole-transporting characteristics. The presence of such cross-linking characteristics of solutionprocessable HTL materials therefore makes them more challenging in the development stage, and also makes them essence of solution-processable OLED materials. In this work, the structure-property relationships of thermally crosslinkable HTL materials were systematically investigated by changing styrene-based cross-linking functionalities and modifying the carbazole-based hole-transporting core structures. The temperature dependency of the cross-linking characteristics of the HTL materials was systematically investigated by the UV-vis. absorption spectroscopy. The new HTL materials were also applied to green phosphorescent OLEDs, and their device characteristics were also investigated based on the chemical structures of the HTL materials. The device configuration was [ITO / PEDOT:PSS / HTL / EML / ETL / CsF / Al]. We found out that the chemical structures of the cross-linking functionalities greatly affect not only the cross-linking characteristics of the resultant HTL materials, but also the resultant OLED device characteristics. The increase of the maximum luminance and efficiency of OLEDs was evident as the cross-linking temperature decreases from higher than 200°C to at around 150°C.

  12. OLED on the Horizon?%OLED初具市场规模

    Institute of Scientific and Technical Information of China (English)

    Alan Brawn

    2008-01-01

    @@ We have all heard the hype about OLED displays and that they are going to offer great picture quality as well as energy efficiency in a very thin profile package. The issue at hand is whether they will be priced competitively in the market and overcome some of their shortcomings in the short term.

  13. Piezoelectric Lead Zirconium Titanate Composite Touch Sensors for Integration with Flexible OLED Technology

    NARCIS (Netherlands)

    Deutz, D.B.; Tempelman, E.; Zwaag, S. van der; Groen, W.A.

    2015-01-01

    To enable the design of more intuitive product user interfaces, the prospects of matching piezoelectric touch sensors with flexible organic light emitting diode (OLED) technology are investigated. Low stiffness piezoelectric composite sensors, combining piezoelectric Pb(Zr,Ti)O3 powder with a polyme

  14. Molecular electrophosphorescence in (Sm, Gd)-{beta}-diketonate complex blend for OLED applications

    Energy Technology Data Exchange (ETDEWEB)

    Reyes, R., E-mail: fisicaplic@hotmail.com [Facultad de Ingenieria Quimica y Textil, Universidad Nacional de Ingenieria, UNI, Av. Tupac Amaru 210, Lima 31, Peru (Peru); Cremona, M. [DIMAT - Divisao de Metrologia de Materiais, Instituto Nacional de Metrologia, Normalizacao e Qualidade Industrial, INMETRO, Duque de Caxias, RJ (Brazil); Departamento de Fisica, Pontificia Universidade Catolica do Rio de Janeiro, PUC-Rio, C.P. 38071, Rio de Janeiro, RJ, CEP 22453-970 (Brazil); Teotonio, E.E.S. [Departamento de Quimica, CCEN, Universidade Federal da Paraiba, UFPB, C.P. 5093, Joao Pessoa, PB, CEP 5805-970 (Brazil); Brito, H.F. [Instituto de Quimica, Universidade de Sao Paulo, USP, C.P. 26077, Sao Paulo, SP, CEP 05599-970 (Brazil); Malta, O.L. [Departamento de Quimica Fundamental, CCEN, Universidade Federal de Pernambuco, Cidade Universitaria, Recife, PE, CEP 50670-901 (Brazil)

    2013-02-15

    In this work the preparation and characterization of the triple-layer organic light-emitting diode (OLED) using a mixture of the samarium and gadolinium {beta}-diketonate complexes [Sm{sub 0.5}Gd{sub 0.5}(TTA){sub 3}(TPPO){sub 2}] as emitting layer is reported. The OLED's devices contain 1-(3-methylphenyl)-1,2,3,4-tetrahydroquinoline-6-carboxyaldehyde-1, 1'-diphenylhydrazone (MTCD) as hole-transporting layer and tris(8-hydroxyquinoline aluminum) (Alq{sub 3}) as electron transporting layer. The electroluminescence spectrum present emission narrow bands from the {sup 4}G{sub 5/2}{yields}{sup 6}H{sub J} transitions (where J=5/2, 7/2 and 9/2) characteristic of the Sm{sup 3+} ion. These sharp lines are overlapped with a broad band attributed to the electrophosphorescence from the T{sub 1}{yields}S{sub 0} transition in the ligand TTA. The intramolecular energy transfer is discussed and applied on the change of the emission color of the organic LEDs at different bias voltages. - Highlights: Black-Right-Pointing-Pointer Samarium and gadolinium complexes. Black-Right-Pointing-Pointer OLED with complex blend (Sm,Gd). Black-Right-Pointing-Pointer Electrophosphorescence emission detection. Black-Right-Pointing-Pointer Application in OLED changing the color emission.

  15. Võipaanikaks ei ole alust - kaupa jätkub lademetes / Andres Reimer ; kommenteerinud Ants Virkus

    Index Scriptorium Estoniae

    Reimer, Andres

    2011-01-01

    Võitootjate väitel ei ole võiostupaanikaks mingit alus. Saaremaa piimatööstuse juhi Andi Saagpaku kinnitusel on nõudlust või järele suurendanud Euroopas 2011. a. toimunud kampaaniad piimarasva tarbimise propageerimiseks. Tere piimatööstuse võieksport Skandinaavia maadesse on suurenenud viis korda

  16. Efficient, deep-blue TADF-emitters for OLED display applications (Conference Presentation)

    Science.gov (United States)

    Volz, Daniel; Baumann, Thomas

    2016-09-01

    Currently, the mobile display market is strongly shifting towards AMOLED technology, in order to enable curved and flexible displays. This leads to a growing demand for highly efficient OLED emitters to reduce the power consumption and increase display resolution at the same time. While highly efficient green and red OLEDs already found their place in commercial OLED-displays, the lack of efficient blue emitters is still an issue. Consequently, the active area for blue is considerably larger than for green and red pixels, to make up for the lower efficiency. We intend to close this efficiency-gap with novel emitters based on thermally activated delayed fluorescence (TADF) technology. Compared to state-of-the-art fluorescent dopants, the efficiency of TADF-emitters is up to four times higher. At the same time, it is possible to design them in a way to maintain deep blue emission, i.e. CIE y technology does not contain any rare elements, which allows for the fabrication of sustainable OLED technology. In this work, we highlight one of our recently developed blue TADF materials. Basic material properties as well as first device results are discussed. In a bottom-emitting device, a CIEx/CIEy coordinate of (0.16/0.17) was achieved with efficiency values close to 20% EQE.

  17. Kunstnikuks pürgija vajab paari õigeaegset impulssi / Kaido Ole, Eva Unt

    Index Scriptorium Estoniae

    Ole, Kaido

    2006-01-01

    Antonia Claudio Carvalho meistriklass "Ava oma silmad/Open Your Eyes" 23.-27. I ja näitus 27. I-9. II Eesti Kunstiakadeemia galeriis. Meistriklassist vestlesid EKA maaliosakonna juhataja Kaido Ole ja maalieriala III kursuse üliõpilane Eva Unt

  18. Kunstnikuks pürgija vajab paari õigeaegset impulssi / Kaido Ole, Eva Unt

    Index Scriptorium Estoniae

    Ole, Kaido

    2006-01-01

    Antonia Claudio Carvalho meistriklass "Ava oma silmad/Open Your Eyes" 23.-27. I ja näitus 27. I-9. II Eesti Kunstiakadeemia galeriis. Meistriklassist vestlesid EKA maaliosakonna juhataja Kaido Ole ja maalieriala III kursuse üliõpilane Eva Unt

  19. John Smith vastab / Kaido Ole, Marko Mäetamm ; interv. Harry Liivrand

    Index Scriptorium Estoniae

    Ole, Kaido

    2003-01-01

    Marko Mäetamm ja Kaido Ole, kelle kosmoseteemaline näitus "Marko and Kaido. By John Smith" on avatud Veneetsia biennaalil räägivad teemadel "koosmaalimine", "kosmoseodüsseia", "maalikunst", "kunstnikuidentiteet", "Veneetsia biennaal", "kuraatori võim", "pseudonüüm", "Eesti kunstiruum", "video" jm.

  20. John Smith vastab / Kaido Ole, Marko Mäetamm ; interv. Harry Liivrand

    Index Scriptorium Estoniae

    Ole, Kaido

    2003-01-01

    Marko Mäetamm ja Kaido Ole, kelle kosmoseteemaline näitus "Marko and Kaido. By John Smith" on avatud Veneetsia biennaalil räägivad teemadel "koosmaalimine", "kosmoseodüsseia", "maalikunst", "kunstnikuidentiteet", "Veneetsia biennaal", "kuraatori võim", "pseudonüüm", "Eesti kunstiruum", "video" jm.

  1. True-color 640 ppi OLED arrays patterned by CA i-line photolithography

    NARCIS (Netherlands)

    Malinowski, P.E.; Ke, T.; Nakamura, A.; Chang, T.-Y.; Gokhale, P.; Steudel, S.; Janssen, D.; Kamochi, Y.; Koyama, I.; Iwai,Y.; Heremans, P.

    2015-01-01

    In this paper, side-by-side patterning of red, green and blue OLEDs is demonstrated. To achieve 640 ppi arrays with 20 µm subpixel pitch, chemically amplified, i-line photoresist system with submicron resolution was used. These results show feasibility of obtaining full-color displays with ultra-hig

  2. Diferencias en conducta agresiva entre adolescentes españoles, chinos y mexicanos

    Directory of Open Access Journals (Sweden)

    María S. Torregrosa

    2010-12-01

    Full Text Available La evidencia empírica ha revelado diferencias culturales en la expresión de la agresividad. El objetivo de este estudio fue analizar las diferencias de agresividad entre estudiantes españoles, mexicanos y chinos de Educación Secundaria. La escala de Conducta Antisocial del Teenage Inventory of Social Skills (TISS fue administrada a 420 españoles, 532 mexicanos y 431 chinos, con edades comprendidas entre los 12 y los 15 años. Los análisis de varianza mostraron que los estudiantes chinos presentaron niveles significativamente más altos de agresividad que los estudiantes españoles y mexicanos, no encontrándose diferencias entre los dos últimos grupos. Este patrón de resultados fue similar por género y edad. Así, todas las submuestras de estudiantes chinos (chicos, chicas, 12-13 años y 14-15 años informaron niveles significativamente más altos de agresividad que sus iguales españoles y mexicanos. Sin embargo, las diferencias encontradas fueron de magnitud pequeña y moderada. Los resultados son discutidos de acuerdo con las dimensiones culturales de individualismo vs. colectivismo y distancia de poder.

  3. The electro-thermal-mechanical performance of an OLED : a multi-physics model study

    NARCIS (Netherlands)

    Gielen, A.W.J.; Barink, M.; Brand, J. van de; Mol, A.M.B. van

    2009-01-01

    In order to study the electrical-thermo-mechanical interaction in OLEDs, finite element based simulation models were developed. Two dimensional models were used to study detailed design effects, such as the location of the bus bars, while a three dimensional model was used to study the effect of dif

  4. Spectrally narrowed leaky waveguide edge emission and transient electrluminescent dynamics of OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Zhengqing, Gan [Iowa State Univ., Ames, IA (United States)

    2010-01-01

    In summary, there are two major research works presented in this dissertation. The first research project (Chapter 4) is spectrally narrowed edge emission from Organic Light Emitting Diodes. The second project (Chapter 5) is about transient electroluminescent dynamics in OLEDs. Chapter 1 is a general introduction of OLEDs. Chapter 2 is a general introduction of organic semiconductor lasers. Chapter 3 is a description of the thermal evaporation method for OLED fabrication. The detail of the first project was presented in Chapter 4. Extremely narrowed spectrum was observed from the edge of OLED devices. A threshold thickness exists, above which the spectrum is narrow, and below which the spectrum is broad. The FWHM of spectrum depends on the material of the organic thin films, the thickness of the organic layers, and length of the OLED device. A superlinear relationship between the output intensity of the edge emission and the length of the device was observed, which is probably due to the misalignment of the device edge and the optical fiber detector. The original motivation of this research is for organic semiconductor laser that hasn't been realized due to the extremely high photon absorption in OLED devices. Although we didn't succeed in fabricating an electrically pumped organic laser diode, we made a comprehensive research in edge emission of OLEDs which provides valuable results in understanding light distribution and propagation in OLED devices. Chapter 5 focuses on the second project. A strong spike was observed at the falling edge of a pulse, and a long tail followed. The spike was due to the recombination of correlated charge pair (CCP) created by trapped carriers in guest molecules of the recombination zone. When the bias was turned off, along with the decreasing of electric field in the device, the electric field induced quenching decreases and the recombination rate of the CCP increases which result in the spike. This research project provides

  5. Application of Developed APCVD Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting

    Energy Technology Data Exchange (ETDEWEB)

    Silverman, Gary S.; Bluhm, Martin; Coffey, James; Korotkov, Roman; Polsz, Craig; Salemi, Alexandre; Smith, Robert; Smith, Ryan; Stricker, Jeff; Xu, Chen; Shirazi, Jasmine; Papakonstantopulous, George; Carson, Steve; Hartmann, Sören; Jessen, Frank; Krogmann, Bianaca; Rickers, Christoph; Ruske, Manfred; Schwab, Holger; Bertram, Dietrich

    2011-01-02

    Economics is a key factor for application of organic light emitting diodes (OLED) in general lighting relative to OLED flat panel displays that can handle high cost materials such as indium tin oxide (ITO) or Indium zinc oxide (IZO) as the transparent conducting oxide (TCO) on display glass. However, for OLED lighting to penetrate into general illumination, economics and sustainable materials are critical. The issues with ITO have been documented at the DOE SSL R&D and Manufacturing workshops for the last 5 years and the issue is being exaserbated by export controls from China (one of the major sources of elemental indium). Therefore, ITO is not sustainable because of the fluctuating costs and the United States (US) dependency on other nations such as China. Numerous alternatives to ITO/IZO are being evaluated such as Ag nanoparticles/nanowires, carbon nanotubes, graphene, and other metal oxides. Of these other metal oxides, doped zinc oxide has attracted a lot of attention over the last 10 years. The volume of zinc mined is a factor of 80,000 greater than indium and the US has significant volumes of zinc mined domestically, resulting in the ability for the US to be self-sufficient for this element that can be used in optoelectonic applications. The costs of elemental zinc is over 2 orders of magnitude less than indium, reflecting the relative abundance and availablility of the elements. Arkema Inc. and an international primary glass manufacturing company, which is located in the United States, have developed doped zinc oxide technology for solar control windows. The genesis of this DOE SSL project was to determine if doped zinc oxide technology can be taken from the commodity based window market and translate the technology to OLED lighting. Thus, Arkema Inc. sought out experts, Philips Lighting, Pacific Northwest National Laboratories (PNNL) and National Renewable Research Laboratories (NREL), in OLED devices and brought them into the project. This project had a

  6. OLED-based physiologically-friendly very low-color temperature illumination for night

    Science.gov (United States)

    Jou, Jwo-Huei; Shen, Shih-Ming; Tang, Ming-Chun; Chen, Pin-Chu; Chen, Szu-Hao; Wang, Yi-Shan; Chen, Chien-Chih; Wang, Ching-Chun; Hsieh, Chun-Yu; Lin, Chin-Chiao; Chen, Chien-Tien

    2012-09-01

    Numerous medical research studies reveal intense white or blue light to drastically suppress at night the secretion of melatonin (MLT), a protective oncostatic hormone. Lighting devices with lower color-temperature (CT) possess lesser MLT suppression effect based on the same luminance, explaining why physicians have long been calling for the development of lighting sources with low CT or free from blue emission for use at night to safeguard human health. We will demonstrate in the presentation the fabrication of OLED devices with very-low CT, especially those with CT much lower than that of incandescent bulbs (2500K) or even candles (2000K). Without any light extraction method, OLEDs with an around 1800K CT are easily obtainable with an efficacy of 30 lm/W at 1,000 nits. To also ensure high color-rendering to provide visual comfort, low CT OLEDs composing long wavelength dominant 5-spectrum emission have been fabricated. While keeping the color-rendering index as high as 85 and CT as low as 2100K, the resulting efficacy can also be much greater than that of incandescent bulbs (15 lm/W), proving these low CT OLED devices to be also capable of being energy-saving and high quality. The color-temperature can be further decreased to 1700K or lower upon removing the undesired short wavelength emission but on the cost of losing some color rendering index. It is hoped that the devised energy-saving, high quality low CT OLED could properly echo the call for a physiologically-friendly illumination for night, and more attention could be drawn to the development of MLT suppression-less non-white light.

  7. Application of Developed APCVD Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting

    Energy Technology Data Exchange (ETDEWEB)

    Martin Bluhm; James Coffey; Roman Korotkov; Craig Polsz; Alexandre Salemi; Robert Smith; Ryan Smith; Jeff Stricker; Chen Xu; Jasmine Shirazi; George Papakonstantopulous; Steve Carson; Claudia Goldman; Soren Hartmann; Frank Jessen; Bianca Krogmann; Christoph Rickers; Manfred Ruske; Holger Schwab; Dietrich Bertram

    2011-01-02

    Economics is a key factor for application of organic light emitting diodes (OLED) in general lighting relative to OLED flat panel displays that can handle high cost materials such as indium tin oxide (ITO) or Indium zinc oxide (IZO) as the transparent conducting oxide (TCO) on display glass. However, for OLED lighting to penetrate into general illumination, economics and sustainable materials are critical. The issues with ITO have been documented at the DOE SSL R&D and Manufacturing workshops for the last 5 years and the issue is being exacerbated by export controls from China (one of the major sources of elemental indium). Therefore, ITO is not sustainable because of the fluctuating costs and the United States (US) dependency on other nations such as China. Numerous alternatives to ITO/IZO are being evaluated such as Ag nanoparticles/nanowires, carbon nanotubes, graphene, and other metal oxides. Of these other metal oxides, doped zinc oxide has attracted a lot of attention over the last 10 years. The volume of zinc mined is a factor of 80,000 greater than indium and the US has significant volumes of zinc mined domestically, resulting in the ability for the US to be self-sufficient for this element that can be used in optoelectronic applications. The costs of elemental zinc is over 2 orders of magnitude less than indium, reflecting the relative abundance and availability of the elements. Arkema Inc. and an international primary glass manufacturing company, which is located in the United States, have developed doped zinc oxide technology for solar control windows. The genesis of this DOE SSL project was to determine if doped zinc oxide technology can be taken from the commodity based window market and translate the technology to OLED lighting. Thus, Arkema Inc. sought out experts, Philips Lighting, Pacific Northwest National Laboratories (PNNL) and National Renewable Research Laboratories (NREL), in OLED devices and brought them into the project. This project had a

  8. Los jueces españoles como jueces de la Unión Europea

    DEFF Research Database (Denmark)

    Mayoral, Juan A.; Ordóñez Solís, David; Berberoff, Dimitry

    2013-01-01

    Los jueces nacionales deben asegurar la correcta aplicación del derecho de la Unión y deben proteger los derechos individuales que se derivan del conjunto de doctrinas y normas consignadas en los Tratados y desarrolladas e interpretadas por el Tribunal de Justicia de la Unión Europea. En este...... sentido, el presente estudio trata de esclarecer si actualmente los jueces españoles se han adaptado a las exigencias creadas por el sistema legal de la Unión para la aplicación del derecho europeo. Para comprobar si los jueces españoles han asimilado su condición de jueces europeos, operando como...

  9. Theoretical investigation of the degradation mechanisms in host and guest molecules used in OLED active layers

    KAUST Repository

    Winget, Paul

    2014-10-08

    A feature of OLEDs that has to date received little attention is the prediction of the stability of the molecules involved in the electrical and optical processes. Here, we present computational results intended to aid in the development of stable systems. We identify degradation pathways and define new strategies to guide the synthesis of stable materials for OLED applications for both phosphorescent emitters and organic host materials. The chemical reactivity of these molecules in the active layers of the devices is further complicated by the fact that, during operation, they can be either oxidized or reduced (as they localize a hole or an electron) in addition to forming both singlet and triplet excitons. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

  10. Polystyrene Backbone Polymers Consisting of Alkyl-Substituted Triazine Side Groups for Phosphorescent OLEDs

    Directory of Open Access Journals (Sweden)

    Beatrice Ch. D. Salert

    2012-01-01

    Full Text Available This paper describes the synthesis of new electron-transporting styrene monomers and their corresponding polystyrenes all with a 2,4,6-triphenyl-1,3,5-triazine basic structure in the side group. The monomers differ in the alkyl substitution and in the meta-/paralinkage of the triazine to the polymer backbone. The thermal and spectroscopic properties of the new electron-transporting polymers are discussed in regard to their chemical structures. Phosphorescent OLEDs were prepared using the obtained electron-transporting polymers as the emissive layer material in blend systems together with a green iridium-based emitter 13 and a small molecule as an additional cohost with wideband gap characteristics (CoH-001. The performance of the OLEDs was characterized and discussed in regard to the chemical structure of the new electron-transporting polymers.

  11. Spontaneous Fluctuations of Transition Dipole Moment Orientation in OLED Triplet Emitters.

    Science.gov (United States)

    Steiner, Florian; Bange, Sebastian; Vogelsang, Jan; Lupton, John M

    2015-03-19

    The efficiency of an organic light-emitting diode (OLED) depends on the microscopic orientation of transition dipole moments of the molecular emitters. The most effective materials used for light generation have 3-fold symmetry, which prohibits a priori determination of dipole orientation due to the degeneracy of the fundamental transition. Single-molecule spectroscopy reveals that the model triplet emitter tris(1-phenylisoquinoline)iridium(III) (Ir(piq)3) does not behave as a linear dipole, radiating with lower polarization anisotropy than expected. Spontaneous symmetry breaking occurs in the excited state, leading to a random selection of one of the three ligands to form a charge-transfer state with the metal. This nondeterministic localization is revealed in switching of the degree of linear polarization of phosphorescence. Polarization scrambling likely raises out-coupling efficiency and should be taken into account when deriving molecular orientation of the guest emitter within the OLED host from ensemble angular emission profiles.

  12. Spontaneous fluctuations of transition dipole moment orientation in OLED triplet emitters

    CERN Document Server

    Steiner, Florian; Vogelsang, Jan; Lupton, John M

    2015-01-01

    The efficiency of an organic light-emitting diode (OLED) depends on the microscopic orientation of transition dipole moments of the molecular emitters. The most effective materials used for light generation have threefold symmetry, which prohibit a priori determination of dipole orientation due to the degeneracy of the fundamental transition. Single-molecule spectroscopy reveals that the model triplet emitter tris(2-phenylisoquinoline)iridium(III) (Ir(piq)3) does not behave as a linear dipole, radiating with lower polarization anisotropy than expected. Spontaneous symmetry breaking occurs in the excited state, leading to a random selection of one of the three ligands to form a charge transfer state with the metal. This non-deterministic localization is revealed in switching of the degree of linear polarization of phosphorescence. Polarization scrambling likely raises out-coupling efficiency and should be taken into account when deriving molecular orientation of the guest emitter within the OLED host from ense...

  13. Solution-Procesed Small-Molecule OLED Luminaire for Interior Illumination

    Energy Technology Data Exchange (ETDEWEB)

    Parker, Ian [Dupont Displays, Inc., Santa Barbara, CA (United States)

    2012-02-29

    Prototype lighting panels and luminaires were fabricated using DuPont Displays solution-processed small-molecule OLED technology. These lighting panels were based on a spatially-patterned, 3-color design, similar in concept to an OLED display panel, with materials chosen to maximize device efficacy. The majority of the processing steps take place in air (rather than high vacuum). Optimization of device architecture, processing and construction was undertaken, with a final prototype design of 50 cm{sup 2} being fabricated and tested. Performance of these panels reached 35 lm/W at illuminant-A. A unique feature of this technology is the ability to color tune the emission, and color temperatures ranging from 2700 to > 6,500K were attained in the final build. Significant attention was paid to low-cost fabrication techniques.

  14. Near-to-eye displays with embedded eye-tracking by bi-directional OLED microdisplay

    Science.gov (United States)

    Vogel, Uwe; Wartenberg, Philipp; Richter, Bernd; Brenner, Stephan; Baumgarten, Judith; Thomschke, Michael; Fehse, Karsten; Hild, Olaf

    2015-09-01

    Near-to-eye (NTE) projection is the major approach to "Smart Glasses", which have gained lot of traction during the last few years. Micro-displays based on organic light-emitting diodes (OLEDs) achieve high optical performance with excellent contrast ratio and large dynamic range at low power consumption, making them suitable for such application. In state-of-the-art applications the micro-display typically acts as a purely unidirectional output device. With the integration of an additional image sensor, the functionality of the micro-display can be extended to a bidirectional optical input/output device, aiming for implementation of eye-tracking capabilities in see-through (ST-)NTE applications to achieve gaze-based human-display-interaction. This paper describes a new bi-directional OLED microdisplay featuring SVGA resolution for both image display and acquisition, and its implementation with see-through NTE optics.

  15. High-throughput quantum chemistry and virtual screening for OLED material components

    Science.gov (United States)

    Halls, Mathew D.; Giesen, David J.; Hughes, Thomas F.; Goldberg, Alexander; Cao, Yixiang

    2013-09-01

    Computational structure enumeration, analysis using an automated simulation workflow and filtering of large chemical structure libraries to identify lead systems, has become a central paradigm in drug discovery research. Transferring this paradigm to challenges in materials science is now possible due to advances in the speed of computational resources and the efficiency and stability of chemical simulation packages. State-of-the-art software tools that have been developed for drug discovery can be applied to efficiently explore the chemical design space to identify solutions for problems such as organic light-emitting diode material components. In this work, virtual screening for OLED materials based on intrinsic quantum mechanical properties is illustrated. Also, a new approach to more reliably identify candidate systems is introduced that is based on the chemical reaction energetics of defect pathways for OLED materials.

  16. Study of organic light emitting devices (OLEDs) with optimal emission efficiency

    Energy Technology Data Exchange (ETDEWEB)

    Singh, Jai [School of Engineering and IT, B-purple 12, Faculty of EHS, Charles Darwin University, Darwin, NT 0909 (Australia)

    2010-04-15

    The external emission efficiency of organic light emitting devices (OLEDs) is analysed by studying the rate of spontaneous emission of both singlet and triplet excitons and their corresponding radiative lifetimes. Rates of spontaneous emissions are calculated from the first order perturbation theory using the newly discovered time-dependent spin-orbit-exciton-photon interaction operator as the perturbation operator. It is clearly shown how the new interaction operator is responsible for attracting triplet excitons to a phosphor (heavy metal atom) and then it flips the spins to a singlet configuration. Thus, the spin forbidden transition becomes spin allowed. Calculated rates agree with the experimental results qualitatively. Results are of general interests for OLED studies. (copyright 2010 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  17. Roll-To-Roll Process for Transparent Metal Electrodes in OLED Manufacturing

    Energy Technology Data Exchange (ETDEWEB)

    Slafer, W. Dennis [MicroContinuum, Inc., Cambridge, MA (United States)

    2010-06-02

    This program will develop and demonstrate a new manufacturing technology that can help to improve the efficiency and reduce the cost of producing the next generation solid-state lighting (OLEDs)for a broad range of commercial applications. This will not only improve US competitiveness in the manufacturing sector but will also result in a positive impact in meeting the Department of Energy’s goal of developing high efficiency lighting while reducing the environmental impact.

  18. Tricolor microcavity OLEDs based on P-nc-Si:H films as the complex anodes

    Institute of Scientific and Technical Information of China (English)

    Li Yang; Liu Xingyuan; Wu Chunya; Meng Zhiguo; Wang Yi; Xiong Shaozhen

    2009-01-01

    A P+-nc-Si:H film (boron-doped nc-Si:H thin film) was used as a complex anode of an OLED. As an ideal candidate for the composite anode, the P+-nc-Si:H thin film has a good conductivity with a high work function (~5.7 eV) and outstanding optical properties of high reflectivity, transmission, and a very low absorption. As a result, the combination of the relatively high reflectivity of a P+-nc-Si:H film/ITO complex anode with the very high reflectivity of an Al cathode could form a micro-cavity structure with a certain Q to improve the efficiency of the OLED fabricated on it. An RGB pixel generated by microcavity OLEDs is beneficial for both the reduction of the light loss and the improvement of the color purity and the efficiency. The small molecule Alq would be useful for the emitting light layer (EML) of the MOLED, and the P+-nc-Si film would be used as a complex anode of the MOLED, whose configuration can be constructed as Glass/LTO/P+-nc-Si:H/ITO/MoO3/NPB/Alq/LiF/Al. By adjusting the thickness of the organic layer NPB/Alq, the optical length of the microcavity and the REB colors of the device can be obtained. The peak wavelengths of an OLED are located at 486, 550, and 608 nm, respectively.The CIE coordinates are (0.21,0.45), (0.33,0.63), and (0.54,0.54), and the full widths at half maximum (FWHM)are 35, 32, and 39 nm for red, green, and blue, respectively.

  19. IT Pealinnas oled sa õnnelik: meie-aasta / Priit Kongo, Aune Past

    Index Scriptorium Estoniae

    Kongo, Priit

    2016-01-01

    2015. aasta Eesti Suhtekorralduse Auhinna konkursil pälvis sisekommunikatsiooni preemia Net Group projekti eest "IT-pealinnas oled sa õnnelik: meie-aasta", mille eesmärgiks oli ettevõtte kui hea tööandja maine kujundamine. Žürii hinnangul oli tegemist loomingulise ja oskusliku lähenemisega sisekommunikatsioonile, millega ettevõte suutis loomulikul viisil kaasata oma töötajad firma tegevustesse ja kogukondadesse

  20. Electrical investigations of hybrid OLED microcavity structures with novel encapsulation methods

    Science.gov (United States)

    Meister, Stefan; Brückner, Robert; Fröb, Hartmut; Leo, Karl

    2016-04-01

    An electrical driven organic solid state laser is a very challenging goal which is so far well beyond reach. As a step towards realization, we monolithically implemented an Organic Light Emitting Diode (OLED) into a dielectric, high quality microcavity (MC) consisting of two Distributed Bragg Reectors (DBR). In order to account for an optimal optical operation, the OLED structure has to be adapted. Furthermore, we aim to excite the device not only electrically but optically as well. Different OLED structures with an emission layer consisting of Alq3:DCM (2 wt%) were investigated. The External Quantum Efficiencies (EQE) of this hybrid structures are in the range of 1-2 %, as expected for this material combination. Including metal layers into a MC is complicated and has a huge impact on the device performance. Using Transfer-Matrix-Algorithm (TMA) simulations, the best positions for the metal electrodes are determined. First, the electroluminescence (EL) of the adjusted OLED structure on top of a DBR is measured under nitrogen atmosphere. The modes showed quality factors of Q = 60. After the deposition of the top DBR, the EL is measured again and the quality factors increased up to Q = 600. Considering the two 25-nm-thick-silver contacts a Q-factor of 600 is very high. The realization of a suitable encapsulation method is important. Two approaches were successfully tested. The first method is based on the substitution of a DBR layer with a layer produced via Atomic Layer Deposition (ALD). The second method uses a 0.15-mm-thick cover glass glued on top of the DBR with a 0.23-μm-thick single-component glue layer. Due to the working encapsulation, it is possible to investigate the sample under ambient conditions.

  1. Multi-layer printing of OLEDs as a tool for the creation of security features.

    Science.gov (United States)

    Fischer, Bert; Kreissl, Stefanie; Boeffel, Christine; Wedel, Armin

    2012-03-12

    The combined deposition of structured and homogenous layers for the device setup of OLEDs results in a structured display visible with a gray scale impression. These permanently imprinted structures are only visible during the application of an electrical field and almost invisible in the off state. Most intriguing applications of such devices are security marks, electronic watermarks but also for advertising and design applications the creation of gray scale structures might have interesting applications.

  2. IT Pealinnas oled sa õnnelik: meie-aasta / Priit Kongo, Aune Past

    Index Scriptorium Estoniae

    Kongo, Priit

    2016-01-01

    2015. aasta Eesti Suhtekorralduse Auhinna konkursil pälvis sisekommunikatsiooni preemia Net Group projekti eest "IT-pealinnas oled sa õnnelik: meie-aasta", mille eesmärgiks oli ettevõtte kui hea tööandja maine kujundamine. Žürii hinnangul oli tegemist loomingulise ja oskusliku lähenemisega sisekommunikatsioonile, millega ettevõte suutis loomulikul viisil kaasata oma töötajad firma tegevustesse ja kogukondadesse

  3. Photovoltaic OLED Driver for Low-Power Stand-Alone Light-to-Light Systems

    DEFF Research Database (Denmark)

    Ploug, Rasmus Overgaard; Knott, Arnold

    2016-01-01

    Photovoltaic (PV) stand-alone systems need to achieve multiple energy conversion modes. I.e. the energy conversion from PV to a local energy storage as well as energy conversion from the energy storage to the load. This paper documents the practical design considerations for the development of a ...... conversion from photovoltaic panel to the battery, and 97 % in the area 1.4 W to 2 W for power delivery to the OLED....

  4. Design of a 16 gray scales 320×240 pixels OLED-on-silicon driving circuit

    Institute of Scientific and Technical Information of China (English)

    Huang Ran; Wang Xiaohui; Wang Wenbo; Du Huan; Han Zhengsheng

    2009-01-01

    A 320×240 pixel organic-light-emitting-diode-on-silicon (OLEDoS) driving circuit is implemented using the standard 0.5 μm CMOS process of CSMC. It gives 16 gray scales with integrated 4 bit D/A converters. A three-transistor voltage-programmed OLED pixel driver is proposed, which can realize the very small current driving required for the OLEDoS microdisplay. Both the D/A converter and the pixel driver are implemented with pMOS devices. The pass-transistor and capacitance in the OLED pixel driver can be used to sample the output of the D/A converter. An additional pMOS is added to OLED pixel driver, which is used to control the D/A converter operating only when one row is on. This can reduce the circuit's power consumption. This driving circuit can work properly in a frame frequency of 50 Hz, and the final layout of this circuit is given. The pixel area is 28.4×28.4 μm2 and the display area is 10.7×8.0 mm2 (the diagonal is about 13 mm). The measured pixel gray scale voltage shows that the function of the driver circuit is correct, and the power consumption of the chip is about 350 mW.

  5. Candle light-style OLED: a plausibly human-friendly safe night light

    Science.gov (United States)

    Jou, Jwo-Huei; Chen, Po-Wei; Hsieh, Chun-Yu; Wang, Ching-Chiun; Chen, Chien-Chih; Tung, F.-C.; Chen, Szu-Hao; Wang, Yi-Shan

    2013-09-01

    Candles emit sensationally-warm light with a very-low color-temperature, comparatively most suitable for use at night. In response to the need for such a human-friendly night light, we demonstrate the employment of a high number of candle light complementary organic emitters to generate mimic candle light based on organic light emitting diode (OLED). One resultant candle light-style OLED shows a very-high color rendering index, with an efficacy at least 300 times that of candles or twice that of an incandescent bulb. The device can be fabricated, for example, by using four candle light complementary emitters, namely: red, yellow, green, and sky-blue phosphorescent dyes, vacuum-deposited into two emission layers, separated by a nano-layer of carrier modulation material to maximize both the desirable very-high color rendering index and energy efficiency, while keeping the blue emission very low and red emission high to obtain the desirable low color temperature. With different layer structures, the OLEDs can also show color tunable between that of candle light and dusk-hue. Importantly, a romantic sensation giving and supposedly physiologically-friendly candle light-style emission can hence be driven by electricity in lieu of the hydrocarbon-burning and greenhouse gas releasing candles that were invented 5,000 years ago.

  6. Organic/Organic Heterointerface Engineering to Boost Carrier Injection in OLEDs

    Science.gov (United States)

    Fathollahi, Mohammadreza; Ameri, Mohsen; Mohajerani, Ezeddin; Mehrparvar, Ebrahim; Babaei, Mohammadrasoul

    2017-01-01

    We investigate dynamic formation of nanosheet charge accumulations by heterointerface engineering in double injection layer (DIL) based organic light emitting diodes (OLEDs). Our experimental results show that the device performance is considerably improved for the DIL device as the result of heterointerface injection layer (HIIL) formation, in comparison to reference devices, namely, the current density is doubled and even quadrupled and the turn-on voltage is favorably halved, to 3.7 V, which is promising for simple small-molecule OLEDs. The simulation reveals the (i) formation of dynamic p-type doping (DPD) region which treats the quasi Fermi level at the organic/electrode interface, and (ii) formation of dynamic dipole layer (DDL) and the associated electric field at the organic/organic interface which accelerates the ejection of the carriers and their transference to the successive layer. HIIL formation proposes alternate scenarios for device design. For instance, no prerequisite for plasma treatment of transparent anode electrode, our freedom in varying the thicknesses of the organic layers between 10 nm and 60 nm for the first layer and between 6 nm and 24 nm for the second layer. The implications of the present work give insight into the dynamic phenomena in OLEDs and facilitates the development of their inexpensive fabrication for lighting applications. PMID:28218246

  7. Organic/Organic Heterointerface Engineering to Boost Carrier Injection in OLEDs

    Science.gov (United States)

    Fathollahi, Mohammadreza; Ameri, Mohsen; Mohajerani, Ezeddin; Mehrparvar, Ebrahim; Babaei, Mohammadrasoul

    2017-02-01

    We investigate dynamic formation of nanosheet charge accumulations by heterointerface engineering in double injection layer (DIL) based organic light emitting diodes (OLEDs). Our experimental results show that the device performance is considerably improved for the DIL device as the result of heterointerface injection layer (HIIL) formation, in comparison to reference devices, namely, the current density is doubled and even quadrupled and the turn-on voltage is favorably halved, to 3.7 V, which is promising for simple small-molecule OLEDs. The simulation reveals the (i) formation of dynamic p-type doping (DPD) region which treats the quasi Fermi level at the organic/electrode interface, and (ii) formation of dynamic dipole layer (DDL) and the associated electric field at the organic/organic interface which accelerates the ejection of the carriers and their transference to the successive layer. HIIL formation proposes alternate scenarios for device design. For instance, no prerequisite for plasma treatment of transparent anode electrode, our freedom in varying the thicknesses of the organic layers between 10 nm and 60 nm for the first layer and between 6 nm and 24 nm for the second layer. The implications of the present work give insight into the dynamic phenomena in OLEDs and facilitates the development of their inexpensive fabrication for lighting applications.

  8. Concentration-insensitive phosphorescent organic light emitting devices (PhOLEDs) for easy manufacturing

    Energy Technology Data Exchange (ETDEWEB)

    Dumur, Frédéric, E-mail: frederic.dumur@univ-amu.fr [Aix-Marseille Université, CNRS, ICR, UMR 7273, F-13397 Marseille (France); Lepeltier, Marc [Institut Lavoisier de Versailles, UMR 8180 CNRS, Université de Versailles Saint-Quentin en Yvelines, 45 avenue des Etats-Unis, 78035 Versailles Cedex (France); Zamani Siboni, Hossein, E-mail: hzamanis@uwaterloo.ca [Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West Waterloo, ON, Canada N2L 3G1 (Canada); Xiao, Pu; Graff, Bernadette; Lalevée, Jacques [Institut de Science des Matériaux de Mulhouse IS2M, UMR 7361 CNRS, Université de Haute Alsace, 15 rue Jean Starcky, 68057 Mulhouse Cedex (France); Gigmes, Didier [Aix-Marseille Université, CNRS, ICR, UMR 7273, F-13397 Marseille (France); Aziz, Hany [Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West Waterloo, ON, Canada N2L 3G1 (Canada)

    2014-07-01

    Two heteroleptic iridium(III) complexes Ir(piq){sub 2}(dbm) and Ir(btp){sub 2}(acac) have been tested as emitters for phosphorescent OLEDs (PhOLEDs). Interestingly, device performance exhibited a marked insensitivity to the dopant concentration. In this study, a dibenzoylmethane (dbm)-based complex has also been tested for the first time as dopant for OLEDs. To evaluate the emissive properties of this new emitter belonging to a family of complexes that has not been investigated yet, identical devices were prepared with the well-known red dopant Ir(btp){sub 2}(acac) for comparison. The new complex Ir(piq){sub 2}(dbm) exhibited comparable performance to that obtained with Ir(btp){sub 2}(acac). - Highlights: • A new neutral iridium complex has been tested as emitter. • TD-DFT calculations and electrochemical measurements were carried out to support the experimental results. • UV–visible absorption and photoluminescence spectroscopy of complexes were investigated. • Concentration-insensitive phosphorescent organic light emitting devices were obtained.

  9. Científicos Españoles en el Reino Unido (1750-1830

    Directory of Open Access Journals (Sweden)

    Valera, Manuel

    1998-06-01

    Full Text Available The main object of this article is to explain in detail the continous movement of Spanish people, that by some reason, lived in the U. K. from mid XVIIIth century until the 30's in the XIXth century. Hereby is exposed the main features carried out by Spanish scientist in England, as well as their respective work areas. Afterwords, are numbered the Spanish people associated to the most emblematic British science institution of those days, the Royal Society of London.

    El objeto del presente trabajo es dar cuenta detallada del flujo casi continuo de españoles que, por uno u otro motivo, realizaron alguna estancia en el Reino Unido desde mediados del siglo XVIII hasta los años treinta del siglo XIX. Exponemos primeramente los rasgos más sobresalientes de la actividad desplegada por los científicos españoles en Inglaterra, encuadrada en sus respectivas áreas de trabajo, y posteriormente damos noticia de los españoles asociados a la institución científica británica más emblemática de la época, la Royal Society of London.

  10. A non-allergenic Ole e 1-like protein from birch pollen as a tool to design hypoallergenic vaccine candidates.

    Science.gov (United States)

    Marazuela, Eva G; Hajek, Roswitha; Villalba, Mayte; Barber, Domingo; Breiteneder, Heimo; Rodríguez, Rosalía; Batanero, Eva

    2012-02-01

    Recombinant DNA technology offers several approaches to convert allergens into hypoallergenic derivatives that can represent the basis of novel, safer and more effective forms of allergy vaccines. In this context, we used a new strategy for the design of a hypoallergenic derivative of Ole e 1, the main allergen of olive pollen. By screening a cDNA library from birch pollen, the clone BB18, encoding the birch counterpart of Ole e 1, was identified. In this study, BB18 has been produce in Pichia pastoris as a recombinant protein and immunologically characterized. The well-established non-allergenic properties of BB18 were used to generate a genetic variant of Ole e 1, named OB(55-58), by site-direct mutagenesis of four residues (E(55)V(56)G(57)Y(58)) in an IgE/IgG epitope of Ole e 1 by the corresponding ones in BB18 (SDSE). OB(55-58) was expressed in P. pastoris, purified to homogeneity and analyzed for IgE-reactivity by means of ELISA using sera from olive pollen allergic patients and rat basophil activation assay. T cell reactivity was assayed in a mouse model of Ole e 1 sensitization. The mutant OB(55-58) exhibited an impaired IgE reactivity, but not affected T cell reactivity, compared to wild type rOle e 1. This study emphasizes the usefulness of BB18 as a tool for epitope mapping and for engineering hypoallergenic derivatives of Ole e 1 as vaccine candidates for allergy prevention and treatment.

  11. High efficient OLED displays prepared with the air-gapped bridges on quantum dot patterns for optical recycling

    Science.gov (United States)

    Kim, Hyo-Jun; Shin, Min-Ho; Kim, Joo-Suc; Kim, Se-Eun; Kim, Young-Joo

    2017-02-01

    An optically efficient structure was proposed and fabricated to realize high brightness organic light emitting diode (OLED) displays based on a white OLED prepared with the air-gapped bridges on the quantum dot (QD) patterns. Compared with a conventional white OLED display, in our experiments, the optical intensity of the proposed OLED display shows the enhancement of 58.2% in the red color and 16.8% in the green color after applying the air-gapped bridge structure on QD patterns of 20 wt% concentration. This enhancement comes from the two facts that the QD patterns downconvert unnecessary blue or blue/green light to the required green or red light and the air-gapped bridges increase the color conversion efficiency of QDs by optical recycling using total internal reflection (TIR) at the interface. In addition, the color gamut of the proposed OLED display increases from 65.5 to 75.9% (NTSC x, y ratio) due to the narrow emission spectra of QDs.

  12. P1-7: Modern Display Technology in Vision Science: Assessment of OLED and LCD Monitors for Visual Experiments

    Directory of Open Access Journals (Sweden)

    Tobias Elze

    2012-10-01

    Full Text Available For many decades, cathode ray tube (CRT monitors have been the dominant display technology in vision science. However, in recent years, most manufacturers stopped their CRT production lines, which enforces the application of alternative display technology in the field of vision science. Here, we analyze liquid crystal displays (LCDs and organic light-emitting diode (OLED monitors for their applicability in vision science experiments. Based on extensive measurements of their photometric output, we compare these technologies and contrast them with classical CRT monitors. Vision scientists aim to accurately present both static and dynamic stimuli on their display devices. As for the presentation of static stimuli, we demonstrate an increased accuracy for LCD and OLED devices compared to CRT monitors, because the former exhibit a higher degree of independence of neighboring pixels. As for dynamic presentations, both CRTs and OLEDs outperform LCD devices in terms of accuracy, because dynamic presentations on LCDs require a reorientation of the liquid crystal molecules, so that successive frames in time depend on each other. Together with widely unknown and uncontrolled technical artifacts, these properties of LCDs may impair visual experiments that require high temporal precision. Therefore, OLED monitors are more suitable for vision science experiments with respect to both their static and their temporal characteristics. However, for certain applications in visual neuroscience, the low duty cycle of some OLED devices may introduce frequencies to the photometric output which fall within the window of visibility of neurons in the visual cortex and therefore interfere with single unit recordings.

  13. Molecular hole transporting materials for organic light-emitting diodes (OLEDs)

    Science.gov (United States)

    Loy, Douglas E.

    Organic light-emitting devices are rapidly becoming viable contenders in the display market. One of the major obstacles to the commercial viability of OLEDs is device stability and lifetime. Device stability has been partially, if not mostly, attributed to thermal instability of the organic charge transport layers. Some characteristics of good hole transporters for OLEDs are reversible oxidation, high thermal stability, and the ability to form amorphous films upon vacuum deposition. The main objective of this research was to design novel hole transporting materials with improved thermal stability, while retaining favorable electronic properties. Molecular structure can have drastic effects on the properties of the thin organic films of the hole transporting layers. Hole transporters with increased molecular asymmetry and rigidity have been demonstrated to give amorphous materials with higher glass transition temperatures. While asymmetry provides materials that are more thermally stable, the asymmetry must not be to an extent that would cause electronic asymmetry. Electronic asymmetry resulting from dipoles can act as local charge traps thus hindering hole transport. Increasing molecular rigidity provides materials with increased thermal stability, as well as improved hole mobility. The increased mobility is due in part to the better conjugation with materials held in a planar orientation. A direct correlation has been found between the thermal stability of a OLED and the glass transition of the hole transporting material used. Structural design, synthesis and characterization of novel hole transporting materials will be reported, as well as their performance in electroluminescent devices. Device operation and architecture will also be discussed, including the use of hole transporters as host for emitting materials.

  14. BALETNE VSEBINE PRI POUKU GLASBENE VZGOJE NA RAZREDNI STOPNJI DEVETLETNE OSNOVNE ŠOLE

    OpenAIRE

    Stergulec, Tjaša

    2011-01-01

    Diplomska naloga obravnava vključitev baletnih vsebin v pouk glasbene vzgoje na razredni stopnji devetletne osnovne šole. V osnovnih šolah imamo veliko plesnih in baletnih vsebin, ki so v učnem načrtu zapisane, vendar premalo podrobno opisane, da bi jih lahko učitelji uporabili. Namen je predstaviti balet kot pomembno dejavnost pri pouku glasbene vzgoje, saj danes otroci odraščajo v družbi, ki se vse premalo zaveda pomembnosti klasičnega baleta kot umetnosti. V diplomskem delu je predstavljen...

  15. Analysis and combined optimization of the cladding layer in outcoupling-improved top emitting OLEDs

    Institute of Scientific and Technical Information of China (English)

    Ligong Yang(杨立功); Peng Wu(吴鹏); Biqin Huang(黄弼勤); Peifu Gu(顾培夫)

    2004-01-01

    Within the associated framework of metal-dielectric films optics and the dual-metal-mirror microcavity structure, the effect of a cladding dielectric layer on the light outcoupling efficiency of the top emitting orgainic light-emitting devices (OLEDs) is analyzed. A combined evaluation followed by detailed design and optimization is proposed and described in detail. The analysis shows that this cladding layer affects the device's outcoupling efficiency with three different extents as the thickness of the metal layer in the multilayer cathode varying. The simulation results give a reasonable agreement with former experiment results.

  16. Analysis and combined optimization of the cladding layer in outcoupling-improved top emitting OLEDs

    Institute of Scientific and Technical Information of China (English)

    杨立功; 吴鹏; 黄弼勤; 顾培夫

    2004-01-01

    Within the associated framework of metal-dielectric films optics and the dual-metal-mirror mnicrocavity structure, the effect of a cladding dielectric layer on the light outcoupling efficiency of the top emitting orgainic light-emitting devices (OLEDs) is analyzed. A combined evaluation followed by detailed design and optimization is proposed and described in detail. The analysis shows that this cladding layer affects the device's outcoupling efficiency with three different extents as the thickness of the metal layer in the multilayer cathode varying. The simulation results give a reasonable agreement with former experiment results.

  17. El exilio interior de los helenistas españoles del siglo XVI

    OpenAIRE

    Pérez Martín, Inmaculada

    2002-01-01

    Se aborda lo que significaron los estudios griegos en el Humanismo español siguiendo el camino abierto por Américo Castro en “La edad conflictiva”. Los helenistas españoles que pudieron estudiar y trabajar fuera de nuestras fronteras, en Italia y en Flandes, culminaron con éxito sus trabajos, mientras que su vuelta a la Península eliminó toda posibilidad de publicar y difundir el estudio crítico de los textos, por el miedo a la Inquisición, la penuria editorial y, finalmente, la autocensura....

  18. Las preferencias de los consumidores españoles hacia las cocinas étnicas

    OpenAIRE

    Camarena Gómez, Dena María; Sanjuán López, Ana Isabel

    2012-01-01

    Las cocinas étnicas forman parte de las nuevas tendencias en el consumo de la población española. Su introducción, aunque reciente, ha logrado hacerse un espacio en los canales de distribución minorista y consolidarse en el gusto de los consumidores. Con el fin de analizar las preferencias manifestadas por los consumidores españoles hacia distintas cocinas étnicas y situaciones de consumo, se ha realizado un experimento de elección y estimado un modelo logit mixto. A partir de est...

  19. Hábitos alimentarios de los lactantes españoles y chilenos

    OpenAIRE

    Santamaría Orleans, Alicia

    2005-01-01

    [spa] La introducción de la alimentación complementaria presenta diferencias importantes dependiendo de diferentes factores, tales como el área geográfica, la formación del profesional sanitario responsable del seguimiento del bebé o el nivel socioeconómico de la familia. El presente trabajo tiene como objetivo conocer las características actuales de la diversificación alimentaria en los lactantes españoles, estudiando la duración de la lactancia materna, la edad de introducción de algunos de...

  20. Energy transfer in organic multilayer quantum well structure and its application to OLEDs

    Institute of Scientific and Technical Information of China (English)

    ZHAO De-wei; SONG Shu-fang; ZHAO Su-ling; XU Zheng

    2007-01-01

    We fabricate a series of samples and OLEDs with organic multilayer quantum well structure, which consist of alternate PBD and Alq3. Both PBD and Alq3 are electron-transporting materials, and PBD is used as potential barrier layer, while Alq3 is used as potential well layer and emitting layer. Compared with double-layer structure, the luminescent characteristics of organic samples and diodes with quantum well structure are investigated and the quantum well structure helps the energy transfer between well layer and barrier layer. The quantum well structure makes carriers disperse in the different well layers and then increases the number of excitons to enhance the efficiency of the recombination.

  1. High light-extraction-efficiency OLED based on photonic crystal slab structures with taper unit cells

    Institute of Scientific and Technical Information of China (English)

    YAN Rong-jin; WANG Qing-kang

    2006-01-01

    To improve the light-extraction-efficiency of OLED,we introduced PCS (Photonic Crystal Slab) structures into the interface of ITO layer and glass substrate.PCS structures with Taper unit cells are proved to be effective in reducing the energy of guided wave trapped in high refractive index material,and an increase of light-extraction-efficiency to 95.26% is gained.This enhancement is much greater than the traditional PCS with cylinder unit cells (60%-70%).Physical mechanisms of light-extraction-efficiency enhancement in these structures are further discussed.

  2. Predictores tempranos de la lectura en sujetos españoles

    OpenAIRE

    González-Valenzuela, Mª José; López-Montiel, Dolores; Díaz-Giráldez, Félix

    2016-01-01

    El objetivo de este estudio es conocer la contribución conjunta del conocimiento fonémico, la memoria fonológica y la denominación rápida alfanumérica y no alfanumérica en la lectura de palabras y la lectura de pseudopalabras en niños españoles de primer curso de educación primaria. Participaron 116 alumnos de seis años de habla española, pertenecientes a colegios de nivel sociocultural medio y sin necesidades educativas especiales. Se realizaron análisis descriptivos-exploratorios, análisis ...

  3. La "Riqueza de las Naciones" y los economistas españoles

    OpenAIRE

    Luis PERDICES BLAS

    1991-01-01

    La opinión de R.S. Coase sobre la famosa obra de Adam Smith sintetiza la de numerosos economistas del pasado y del presente. Muchos son los que iniciaron los estudios de economía leyendo la Riqueza de las Naciones y los que quedaron fascinados por su lectura, desde D. Ricardo, T .R. Malthus y J. B. Say hasta A. Marshall, pasando por J .S. Mill y K. Marx entre otros. Los economistas españoles en los últimos doscientos años han apreciado la importancia de A. Smith y algunos leyeron la Riqueza d...

  4. Efficient electroluminescence from a perylenediimide fluorophore obtained from a simple solution processed OLED

    Energy Technology Data Exchange (ETDEWEB)

    Cespedes-Guirao, F J; Fernandez-Lazaro, F; Sastre-Santos, A [Division de Quimica Organica, Instituto de Bioingenieria, Universidad Miguel Hernandez, Avda. de la Universidad, s/n, Elche 03202 (Spain); Garcia-Santamaria, S; Bolink, H J [Instituto de Ciencia Molecular, Universidad de Valencia, PO Box 22085, ES-46071 Valencia (Spain)], E-mail: henk.bolink@uv.es, E-mail: asastre@umh.es, E-mail: fdofdez@umh.es

    2009-05-21

    Simple solution processed organic light emitting diodes are used to screen the performance of two types of highly efficient, narrow band red emitting fluorescent perylenediimides (PDIs). PDIs substituted at the diimide positions seem to form aggregates in the thin film architecture as evidenced by the shifted electroluminescent spectrum. When substituted on the bay position and when used both as the emitting and the electron transporting specie, bright electroluminescence with a narrow width around 610 nm reaching 500 cd m{sup -2} at moderate voltages was observed, demonstrating the usefulness of these fluorophores for OLED applications.

  5. Recent progress of high performance polymer OLED and OPV materials for organic printed electronics

    Science.gov (United States)

    Sekine, Chizu; Tsubata, Yoshiaki; Yamada, Takeshi; Kitano, Makoto; Doi, Shuji

    2014-06-01

    The development of organic printed electronics has been expanding to a variety of applications and is expected to bring innovations to our future life. Along with this trend, high performance organic materials with cost-efficient fabrication processes and specific features such as thin, light weight, bendable, and low power consumption are required. A variety of organic materials have been investigated in the development of this field. The basic guidelines for material design and the recent progress of polymer-based organic light-emitting diodes (OLEDs) and organic photovoltaic cells (OPVs) are reported.

  6. Full-Color LCD Microdisplay System Based on OLED Backlight Unit and Field-Sequential Color Driving Method

    Directory of Open Access Journals (Sweden)

    Sungho Woo

    2011-01-01

    Full Text Available We developed a single-panel LCD microdisplay system using a field-sequential color (FSC driving method and an organic light-emitting diode (OLED as a backlight unit (BLU. The 0.76′′ OLED BLU with red, green, and blue (RGB colors was fabricated by a conventional UV photolithography patterning process and by vacuum deposition of small molecule organic layers. The field-sequential driving frequency was set to 255 Hz to allow each of the RGB colors to be generated without color mixing at the given display frame rate. A prototype FSC LCD microdisplay system consisting of a 0.7′′ LCD microdisplay panel and the 0.76′′ OLED BLU successfully exhibited color display and moving picture images using the FSC driving method.

  7. Modulation of Exciton Generation in Organic Active Planar pn Heterojunction: Toward Low Driving Voltage and High-Efficiency OLEDs Employing Conventional and Thermally Activated Delayed Fluorescent Emitters.

    Science.gov (United States)

    Chen, Dongcheng; Liu, Kunkun; Gan, Lin; Liu, Ming; Gao, Kuo; Xie, Gaozhan; Ma, Yuguang; Cao, Yong; Su, Shi-Jian

    2016-08-01

    Organic light-emitting diodes (OLEDs) combining low driving voltage and high efficiency are designed by employing conventional and thermally activated delayed fluorescence emitters through modulation of excitons generated at the planar p-n heterojunction region. To date, this approach enables the highest power efficiency for yellow-green emitting fluorescent OLEDs with a simplified structure.

  8. Ash pollen allergy: reliable detection of sensitization on the basis of IgE to Ole e 1.

    Science.gov (United States)

    Imhof, Konrad; Probst, Elisabeth; Seifert, Burkhardt; Regenass, Stephan; Schmid-Grendelmeier, Peter

    Background: Alongside hazel, alder and birch pollen allergies, ash pollen allergy is a relevant cause of hay fever during spring in the European region. For some considerable time, ash pollen allergy was not routinely investigated and its clinical relevance may well have been underestimated, particularly since ash and birch tree pollination times are largely the same. Ash pollen extracts are not yet well standardized and diagnosis is therefore sometimes unreliable. Olive pollen, on the other hand, is strongly cross-reactive with ash pollen and is apparently better standardized. Therefore, the main allergen of olive pollen, Ole e 1, has been postulated as a reliable alternative for the detection of ash pollen sensitization. Methods: To determine to what extent specific IgE against Ole e 1 in patients with ash pollen allergy is relevant, we included 183 subjects with ash pollen allergy displaying typical symptoms in March/April and positive skin prick test specific IgE against Ole e 1 (t224) and ash pollen (t25) and various birch allergens (Bet v 1, Bet v 2/v 4) in a retrospective study. Results: A significant correlation was seen between specific IgE against Ole e 1 and ash pollen, but also to a slightly lesser extent between IgE against Ole e 1 and skin prick test with ash pollen, the latter being even higher than IgE and skin prick test both with ash pollen. No relevant correlation was found with birch pollen allergens, demonstrating the very limited cross-reactivity between ash and birch pollen. Conclusion: It appears appropriate to determine specific IgE against Ole e 1 instead of IgE against ash pollen to detect persons with ash pollen allergy. Our findings may also support the idea of using possibly better standardized or more widely available olive pollen extracts instead of ash pollen extract for allergen-specific immunotherapy.

  9. La classe des adjectifs dans un créole français : le cas du mauricien

    Directory of Open Access Journals (Sweden)

    Alleesaib Muhsina

    2014-07-01

    Full Text Available Certains auteurs soutiennent qu'il n'y a pas lieu de distinguer une classe adjectivale dans les créoles français en se basant sur les ressemblances entre les verbes et les adjectifs. Cet article soutient l'hypothèse inverse pour le créole mauricien qui distingue bien une classe adjectivale. Deux critères sont proposés comme étant distinctifs : l'incompatibilité avec la marque du progressif et la possibilité de se combiner avec le verbe vinn « devenir ».

  10. Deep-blue efficient OLED based on NPB with little efficiency roll-off under high current density

    Science.gov (United States)

    Liu, Jian

    2017-03-01

    NPB usually is used as a hole-transport layer in OLED. In fact, it is a standard pure blue-emission material. However, its light-emitting efficiency in OLED is low due to emissive nature of organic material. Herein, a deep-blue OLDE based on NPB was fabricated. The light-emitting efficiency of the device demonstrates a moderate value, and efficiency roll-off is little under high current density. The device demonstrates that the electroplex's emission decreases with increasing electric field intensity.

  11. Photovoltaic OLED Driver for Low-Power Stand-Alone Light-to-Light Systems

    DEFF Research Database (Denmark)

    Ploug, Rasmus Overgaard; Knott, Arnold

    2016-01-01

    Photovoltaic (PV) stand-alone systems need to achieve multiple energy conversion modes. I.e. the energy conversion from PV to a local energy storage as well as energy conversion from the energy storage to the load. This paper documents the practical design considerations for the development of a ...... conversion from photovoltaic panel to the battery, and 97 % in the area 1.4 W to 2 W for power delivery to the OLED.......Photovoltaic (PV) stand-alone systems need to achieve multiple energy conversion modes. I.e. the energy conversion from PV to a local energy storage as well as energy conversion from the energy storage to the load. This paper documents the practical design considerations for the development...... of a three-port-converter for this purpose optimized for the specifications for driving an Organic Light Emitting Diode (OLED) panel intended for lighting purposes. By using a three-port-converter, featuring shared components for each conversion mode, the converter reaches 97 % efficiency at 1.8 W during...

  12. Multi-Faceted Scientific Strategies Toward Better Solid-State Lighting of Phosphorescent OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Mohammad Omary; Bruce Gnade; Qi Wang; Oussama Elbjeirami; Chi Yang; Nigel Shepherd; Huiping Jia; Manuel Quevedo; Husam Alshareef; Minghang Li; Ming-Te Lin; Wei-Hsuan Chen; Iain Oswald; Pankaj Sinha; Ravi Arvapally; Usha Kaipa; John Determan; Sreekar Marpu; Roy McDougald; Gustavo Garza; Jason Halbert; Unnat Bhansali; Michael Perez

    2010-08-31

    This project has advanced solid-state lighting (SSL) by utilizing new phosphorescent systems for use in organic light-emitting diodes (OLEDs). The technical approach was two-fold: a) Targeted synthesis and screening of emitters designed to exhibit phosphorescence with maximized brightness in the solid state; and b) Construction and optimizing the performance of monochromatic and white OLEDs from the best new emitters to improve performance metrics versus the state of the art. The phosphorescent systems were screened candidates among a large variety of recentlysynthesized and newly-designed molecular and macromolecular metal-organic phosphors. The emitters and devices have been optimized to maximize light emission and color metrics, improve the long-term durability of emitters and devices, and reduce the manufacturing cost both by simplifying the process flow and by seeking less expensive device components than common ones. The project succeeded in all these goals upon comparison of the best materials and devices investigated vs. the state of the art of the technology.

  13. Color optimization of single emissive white OLEDs via energy transfer between RGB fluorescent dopants

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Nam Ho; Kim, You-Hyun; Yoon, Ju-An; Lee, Sang Youn [Department of Green Energy and Semiconductor Engineering, Hoseo University, Asan (Korea, Republic of); Ryu, Dae Hyun [Department of Information Technology, Hansei University, Gunpo (Korea, Republic of); Wood, Richard [Department of Engineering Physics, McMaster University, Hamilton, Ontario, Canada L8S 4L7 (Canada); Moon, C.-B. [Department of Green Energy and Semiconductor Engineering, Hoseo University, Asan (Korea, Republic of); Kim, Woo Young, E-mail: wykim@hoseo.edu [Department of Green Energy and Semiconductor Engineering, Hoseo University, Asan (Korea, Republic of); Department of Engineering Physics, McMaster University, Hamilton, Ontario, Canada L8S 4L7 (Canada)

    2013-11-15

    The electroluminescent characteristics of white organic light-emitting diodes (WOLEDs) were investigated including single emitting layer (SEL) with an ADN host and dopants; BCzVBi, C545T, and DCJTB for blue, green and red emission, respectively. The structure of the high efficiency WOLED device was; ITO/NPB(700 Å)/ADN: BCzVBi-7%:C545T-0.05%:DCJTB-0.1%(300 Å)/Bphen(300 Å)/Liq(20 Å)/Al(1200 Å) for mixing three primary colors. Luminous efficiency was 9.08 cd/A at 3.5 V and Commission Intenationale de L’eclairage (CIE{sub x,y}) coordinates of white emission was measured as (0.320, 0.338) at 8 V while simulated CIE{sub x,y} coordinates were (0.336, 0.324) via estimation from each dopant's PL spectrum. -- Highlights: • This paper observes single-emissive-layered white OLED using fluorescent dopants. • Electrical and optical properties are analyzed. • Color stability of white OLED is confirmed for new planar light source.

  14. Synthesis and Electroluminescence Property of New Hexaphenyl Benzene Derivatives Including Emitting Core for OLED.

    Science.gov (United States)

    Shin, Hwangyu; Kang, Hyeonmi; Kim, Jong-Hyung; Wang, Yun-Fan; Kim, Seungho; Kay, Kwang-Yol; Park, Jongwook

    2015-10-01

    Three new emitting compounds of 5P-2TPA, 5P-2An and 5P-2Py for OLED based on hexaphenyl benzene moiety were synthesized. Physical properties were systematically examined by the change of the substitution groups of the synthesized materials. Photoluminescence (PL) spectrum of the synthesized materials showed maximum emitting wavelengths of about 437~488 nm in solution state and 457~516 nm in film state, indicating blue emission color. OLED devices were fabricated by the synthesized compounds using vacuum deposition process as an emitting layer. Device structure was ITO/2-TNATA 60 nm/NPB 15 nm/EML 35 nm/TPBi 20 nm/LiF 1 nm/Al 200 nm. External quantum efficiencies and CIE values of 5P-2TPA, 5P-2An and 5P-2Py were 3.34, 1.06 and 2.06% and (0.14, 0.12), (0.23, 0.45) and (0.24, 0.45), respectively. The three compounds exhibited thermal stablility with high Td of 426 °C, 449 °C and 467 °C.

  15. THE SCIENTIFIC METHOD: THE DNA OF THE EDUCATIONAL RESEARCH IN THE OLE, OLIEQ AND OLU

    Directory of Open Access Journals (Sweden)

    José Antonio Domínguez Montes

    2015-12-01

    Full Text Available It becomes necessary to promote a model of critical, reflexive, competent, investigative professorship and with positive attitudes towards the improvement of his educational practice, impregnating to his student body and initiating it in the educational research and therefore scientific. The educational research is treated in different laws as for education such as, the Organic Law 6/2001, of December the 21st, on Universities (OLU in his consolidated text, as well as in the Organic Law 2/2006 of May the 3rd, of Education (OLE, amended by the Law 8/2013, of December the 9th, for the Improvement of Quality in Education (OLIEQ, sharing both its preliminary Title and Title II, in this case together with experimentation and educational innovation. Defining and clarifying each of the linked concepts, and that they part with the scientific method, we will proceed to justify the authentic need to investigate in education as it comes gathered in the OLE, OLIEQ and OLU.

  16. PFE: ZnO hybrid nanocomposites for OLED applications: Fabrication and photophysical properties

    Energy Technology Data Exchange (ETDEWEB)

    Belhaj, M. [Université de Monastir, Faculté des sciences de Monastir, Département de physique, Laboratoire des Interfaces et des Matériaux Avancés, 5019 Monastir (Tunisia); Dridi, C., E-mail: cherif.Dridi@issatso.rnu.tn [Université de Monastir, Faculté des sciences de Monastir, Département de physique, Laboratoire des Interfaces et des Matériaux Avancés, 5019 Monastir (Tunisia); Université de Sousse, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse, Cité Ettafala, 4003 Ibn Khaldoun Sousse (Tunisia); Elhouichet, H. [Centre National de Recherches en Sciences des Matériaux, Laboratoire de physico-Chimie des Matériaux Minéreaux et leurs applications, B.P. 95 Hammam-Lif 2050 (Tunisia)

    2015-01-15

    In this work, ZnO nanoparticles (n-ZnO) and poly (9, 9-dioctyl-fluorenyl-2, 7-yleneethynylene) (PFE): n-ZnO based thin films were spin-coated onto glass substrates. Structural, morphological and optical properties of ZnO, PFE and the PFE: n-ZnO hybrid films with different n-ZnO mass ratios were investigated. n-ZnO films obtained by sol–gel technique are polycrystalline with a hexagonal wurtzite structure. They are also homogenous with an average grain size of about 35 nm. For polymer nanocomposite, the optical properties are closely related to the ZnO content in the mixture. Among the tested active layers, the best performance is observed for that containing 2 wt% of ZnO nanoparticles. - Highlights: • We have analyzed the optical properties of PFE: ZnO nanocomposites . • We have optimized the best PFE: ZnO nanocomposite for the OLED application. • We have demonstrated the feasibility of white OLED devices.

  17. Nivel de implementación de la calidad en los balnearios españoles

    Directory of Open Access Journals (Sweden)

    José Álvarez García

    2014-01-01

    Full Text Available En este artículo se exponen los resultados de un estudio empírico llevado a cabo en 29 balnearios españoles de los 33 certificados con la Marca “Q de Calidad Turística” en el año 2010. El objetivo es conocer el nivel de implementación de factores críticos de la calidad en los balnearios de cara a poder determinar posteriormente una serie de puntos fuertes y áreas de mejora de la Gestión de la Calidad Total. La metodología de trabajo consiste en un análisis descriptivo que nos permite analizar el nivel de implantación de los factores críticos, y la aplicación del análisis factorial exploratorio para la validación de la escala. Los resultados obtenidos indican que el nivel de implantación de los factores críticos analizados en los balnearios españoles presenta un grado de implantación superior al 77%.

  18. Lanthanide tetrakis-β-diketonate dimers for solution-processed OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Martins, J.P. [CEMDRX, Physics Department, Universidade de Coimbra, Rua Larga, P-3004-516 Coimbra (Portugal); Serviço de Medicina Nuclear, SESARAM E.P.E., Av. Luís de Camões 57, P-9004-514 Funchal, Madeira (Portugal); Martín-Ramos, P. [Higher Technical School of Telecommunications Engineering, Universidad de Valladolid, Campus Miguel Delibes, Paseo Belén 15, 47011 Valladolid (Spain); Coya, C.; Álvarez, A.L. [Escuela Superior de Ciencias Experimentales y Tecnología (ESCET), Universidad Rey Juan Carlos, 28933 Madrid (Spain); Pereira, L.C. [Solid State Group, UCQR, IST/CTN, Instituto Superior Técnico, UTL, Estrada Nacional 10, km 139.7, 2695-066 Bobadela LRS (Portugal); Díaz, R. [Electrochemical Processes Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra 3, 28935 Móstoles Madrid (Spain); Martín-Gil, J. [Advanced Materials Laboratory, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 44, 34004 Palencia (Spain); Ramos Silva, M., E-mail: manuela@pollux.fis.uc.pt [CEMDRX, Physics Department, Universidade de Coimbra, Rua Larga, P-3004-516 Coimbra (Portugal)

    2014-10-15

    Two Eu{sup 3+} and Tb{sup 3+} homodinuclear complexes with 1,3-diphenyl-1,3- propanedione have been synthesized and characterized by single crystal X-ray crystallography, vibrational analysis, calorimetric, magnetic and optical studies. The two isostructural complexes consist of two tetrakis units bridged by two potassium ions, thus affording a neutral charge. The photoluminescence measurements reveal that efficient energy transfer from the β-diketonate ligand to the central Ln{sup 3+} ion by antenna effect is achieved for Eu{sup 3+}, leading to intense red emission with an intrinsic quantum yield of 48%. The Eu{sup 3+}-based material has been assessed as the active layer in a solution-processed OLED with glass/ITO/PEDOT:PSS/PVK:Eu-dimer/TiO{sub 2}/Al structure and its electroluminescent properties have been inspected, showing a threshold voltage of 6 V. - Highlights: • Europium and terbium homodinuclear complexes were synthesized and characterized. • Efficient energy transfer from ligands to Eu{sup 3+} is achieved by antenna effect. • Intense red emission with an intrinsic quantum yield of 48% is attained. • Eu{sup 3+} complex has been integrated in a solution-processed OLED as the emissive layer.

  19. Solution processeable organic-inorganic hybrids based on pyrene functionalized mixed cubic silsesquioxanes as emitters in OLEDs

    KAUST Repository

    Yang, Xiaohui

    2012-01-01

    Traditional materials for application in organic light emitting diodes (OLEDs) are primarily based on small molecules and polymers, with much fewer examples of intermediate molecular weight materials. Our interest lies in this intermediate molecular weight range, specifically in hybrids based on 3-dimensional silsesquioxane (SSQ) cores that represents a new class of versatile materials for application in solution processable OLEDs. We report here various SSQ based hybrids that are easily prepared in one high-yield step from the Heck coupling of commercially available 1-bromopyrene, and 1-bromo-4-heptylbenzene with octavinyl-T8-SSQ, and a mixture of octavinyl-T8-, decavinyl-T10- and dodecavinyl-T12-SSQ. The resulting materials offer numerous advantages for OLEDs including amorphous properties, high-glass-transition temperatures (T g), low polydispersity, solubility in common solvents, and high purity via column chromatography. Solution processed OLEDs prepared from the SSQ hybrids provide sky-blue emission with external quantum efficiencies and current efficiencies of 3.64% and 9.56 cd A -1 respectively. © 2012 The Royal Society of Chemistry.

  20. Optogenetic Stimulation of Peripheral Vagus Nerves using Flexible OLED Display Technology to Treat Chronic Inflammatory Disease and Mental Health Disorders

    Science.gov (United States)

    2016-03-31

    and veterans, including arthritis, systemic inflammatory response syndrome, inflammatory bowel disease, post -traumatic stress disorder (PTSD...provide the desired specificity and minimize unwanted physiological side effects during treatment. Low Cost Mass Production Technology The notional...transcutaneous VNS OLED ‘bandage’ would be manufactured on a thin plastic substrate using commercial thin- film , flexible-display technology

  1. Molecular basis of P450 OleTJE: an investigation of substrate binding mechanism and major pathways

    Science.gov (United States)

    Du, Juan; Liu, Lin; Guo, Li Zhong; Yao, Xiao Jun; Yang, Jian Ming

    2017-05-01

    Cytochrome P450 OleTJE has attracted much attention for its ability to catalyze the decarboxylation of long chain fatty acids to generate alkenes, which are not only biofuel molecule, but also can be used broadly for making lubricants, polymers and detergents. In this study, the molecular basis of the binding mechanism of P450 OleTJE for arachidic acid, myristic acid, and caprylic acid was investigated by utilizing conventional molecular dynamics simulation and binding free energy calculations. Moreover, random acceleration molecular dynamics (RAMD) simulations were performed to uncover the most probable access/egress channels for different fatty acids. The predicted binding free energy shows an order of arachidic acid acid acid. Key residues interacting with three substrates and residues specifically binding to one of them were identified. The RAMD results suggest the most likely channel for arachidic acid, myristic acid, and caprylic acid are 2e/2b, 2a and 2f/2a, respectively. It is suggested that the reaction is easier to carry out in myristic acid bound system than those in arachidic acid and caprylic acid bound system based on the distance of Hβ atom of substrate relative to P450 OleTJE Compound I states. This study provided novel insight to understand the substrate preference mechanism of P450 OleTJE and valuable information for rational enzyme design for short chain fatty acid decarboxylation.

  2. Flexible Al-doped ZnO films grown on PET substrates using linear facing target sputtering for flexible OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Jeong, Jin-A; Shin, Hyun-Su; Choi, Kwang-Hyuk; Kim, Han-Ki, E-mail: imdlhkkim@khu.ac.k [Information Materials and Device Laboratory (IMDL), Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1 Seocheon-dong, Yongin-si, Gyeonggi-do, 446-701 (Korea, Republic of)

    2010-11-24

    We report the characteristics of flexible Al-doped zinc oxide (AZO) films prepared by a plasma damage-free linear facing target sputtering (LFTS) system on PET substrates for use as a flexible transparent conducting electrode in flexible organic light-emitting diodes (OLEDs). The electrical, optical and structural properties of LFTS-grown flexible AZO electrodes were investigated as a function of dc power. We obtained a flexible AZO film with a sheet resistance of 39 {Omega}/{open_square} and an average transmittance of 84.86% in the visible range although it was sputtered at room temperature without activation of the Al dopant. Due to the effective confinement of the high-density plasma between the facing AZO targets, the AZO film was deposited on the PET substrate without plasma damage and substrate heating caused by bombardment of energy particles. Moreover, the flexible OLED fabricated on the AZO/PET substrate showed performance similar to the OLED fabricated on a ITO/PET substrate in spite of a lower work function. This indicates that LFTS is a promising plasma damage-free and low-temperature sputtering technique for deposition of flexible and indium-free AZO electrodes for use in cost-efficient flexible OLEDs.

  3. Heldeke, oled nii kaunis, et sadama hakkab : [luuletused] / Richard Brautigan ; tlk. Ingvar Luhaäär

    Index Scriptorium Estoniae

    Brautigan, Richard

    2007-01-01

    Sisu: Heldeke, oled nii kaunis, et sadama hakkab ; Veel keegi pole teinud seda nii säraliselt ; Kaunis luuletus ; Küüslauguga liha hõõruv Marcia ; Äri ; Mahedad hellused millesse ta mähib mu haavad ; Tunnen end vastikult ; "Kaasa lennates..."

  4. An Indium-Free Anode for Large-Area Flexible OLEDs: Defect-Free Transparent Conductive Zinc Tin Oxide

    NARCIS (Netherlands)

    Morales-Masis, M.; Dauzou, F.; Jeangros, Q.; Dabirian, A.; Lifka, H.; Gierth, R.; Ruske, M.; Moet, D.; Hessler-Wyser, A.; Ballif, C.

    2016-01-01

    Flexible large-area organic light-emitting diodes (OLEDs) require highly conductive and transparent anodes for efficient and uniform light emission. Tin-doped indium oxide (ITO) is the standard anode in industry. However, due to the scarcity of indium, alternative anodes that eliminate its use are h

  5. Device reflectivity as a simple rule for predicting the suitability of scattering foils for improved OLED light extraction

    NARCIS (Netherlands)

    Levell, J.W.; Harkema, S.; Pendyala, R.K.; Rensing, P.A.; Senes, A.; Bollen, D.; MacKerron, D.; Wilson, J.S.

    2013-01-01

    A general challenge in Organic Light Emitting Diodes (OLEDs) is to extract the light efficiently from waveguided modes within the device structure. This can be accomplished by applying an additional scattering layer to the substrate which results in outcoupling increases between 0% to <100% in exter

  6. ["The Society for letters and natural science" The young Ole H. Mynster and the chemical revolution around 1800].

    Science.gov (United States)

    Hansen, Sven Erik

    2015-01-01

    Ole H. Mynster (1772-1818) was a stepson of the leading physician at the Royal Frederik Hospital in Copenhagen. At an early age he became fond of zoology and mineralogy. He created "societies" in Enlightenment-style for boys and young people with lectures and collections. Later on a circle of talented young students, scientists and poets met in his small room at the hospital. Some of them with Ole Mynster as the head set up a modern scientific journal, Physicalsk, oeconomisk og medicochirurgisk Bibliotek for Danmark og Norge which encouraged the introduction of antiphlogistic chemistry. Ole Mynster became physician at the Royal Frederik Hospital and lecturer in clinical pharmacology. He wrote the first book in Danish on pharmacology based upon chemistry. In their memoirs, prominent members of his circle have told about him, and his son F.L. Mynster has written a draft for a biography. An overview of the activities within natural science and medicine of the young Ole Hieronymus Mynster is presented.

  7. Low cost solution-based materials processing methods for large area OLEDs and OFETs

    Science.gov (United States)

    Jeong, Jonghwa

    In Part 1, we demonstrate the fabrication of organic light-emitting devices (OLEDs) with precisely patterned pixels by the spin-casting of Alq3 and rubrene thin films with dimensions as small as 10 mum. The solution-based patterning technique produces pixels via the segregation of organic molecules into microfabricated channels or wells. Segregation is controlled by a combination of weak adsorbing characteristics of aliphatic terminated self-assembled monolayers (SAMs) and by centrifugal force, which directs the organic solution into the channel or well. This novel patterning technique may resolve the limitations of pixel resolution in the method of thermal evaporation using shadow masks, and is applicable to the fabrication of large area displays. Furthermore, the patterning technique has the potential to produce pixel sizes down to the limitation of photolithography and micromachining techniques, thereby enabling the fabrication of high-resolution microdisplays. The patterned OLEDs, based upon a confined structure with low refractive index of SiO2, exhibited higher current density than an unpatterned OLED, which results in higher electroluminescence intensity and eventually more efficient device operation at low applied voltages. We discuss the patterning method and device fabrication, and characterize the morphological, optical, and electrical properties of the organic pixels. In part 2, we demonstrate a new growth technique for organic single crystals based on solvent vapor assisted recrystallization. We show that, by controlling the polarity of the solvent vapor and the exposure time in a closed system, we obtain rubrene in orthorhombic to monoclinic crystal structures. This novel technique for growing single crystals can induce phase shifting and alteration of crystal structure and lattice parameters. The organic molecules showed structural change from orthorhombic to monoclinic, which also provided additional optical transition of hypsochromic shift from

  8. Long-lived and highly efficient green and blue phosphorescent emitters and device architectures for OLED displays

    Science.gov (United States)

    Eickhoff, Christian; Murer, Peter; Geßner, Thomas; Birnstock, Jan; Kröger, Michael; Choi, Zungsun; Watanabe, Soichi; May, Falk; Lennartz, Christian; Stengel, Ilona; Münster, Ingo; Kahle, Klaus; Wagenblast, Gerhard; Mangold, Hannah

    2015-09-01

    In this paper, two OLED device concepts are introduced. First, classical phosphorescent green carbene emitters with unsurpassed lifetime, combined with low voltage and high efficiency are presented and the associated optimized OLED stacks are explained. Second, a path towards highly efficient, long-lived deep blue systems is shown. The high efficiencies can be reached by having the charge-recombination on the phosphorescent carbene emitter while at the same time short emissive lifetimes are realized by fast energy transfer to the fluorescent emitter, which eventually allows for higher OLED stability in the deep blue. Device architectures, materials and performance data are presented showing that carbene type emitters have the potential to outperform established phosphorescent green emitters both in terms of lifetime and efficiency. The specific class of green emitters under investigation shows distinctly larger electron affinities (2.1 to 2.5 eV) and ionization potentials (5.6 to 5.8 eV) as compared to the "standard" emitter Ir(ppy)3 (5.0/1.6 eV). This difference in energy levels requires an adopted OLED design, in particular with respect to emitter hosts and blocking layers. Consequently, in the diode setup presented here, the emitter species is electron transporting or electron trapping. For said green carbene emitters, the typical peak wavelength is 525 nm yielding CIE color coordinates of (x = 0.33, y = 0.62). Device data of green OLEDs are shown with EQEs of 26 %. Driving voltage at 1000 cd/m2 is below 3 V. In an optimized stack, a device lifetime of LT95 > 15,000 h (1000 cd/m2) has been reached, thus fulfilling AMOLED display requirements.

  9. Structural functionality, catalytic mechanism modeling and molecular allergenicity of phenylcoumaran benzylic ether reductase, an olive pollen (Ole e 12) allergen

    Science.gov (United States)

    Jimenez-Lopez, Jose C.; Kotchoni, Simeon O.; Hernandez-Soriano, Maria C.; Gachomo, Emma W.; Alché, Juan D.

    2013-10-01

    Isoflavone reductase-like proteins (IRLs) are enzymes with key roles in the metabolism of diverse flavonoids. Last identified olive pollen allergen (Ole e 12) is an IRL relevant for allergy amelioration, since it exhibits high prevalence among atopic patients. The goals of this study are the characterization of (A) the structural-functionality of Ole e 12 with a focus in its catalytic mechanism, and (B) its molecular allergenicity by extensive analysis using different molecular computer-aided approaches covering (1) physicochemical properties and functional-regulatory motifs, (2) sequence analysis, 2-D and 3D structural homology modeling comparative study and molecular docking, (3) conservational and evolutionary analysis, (4) catalytic mechanism modeling, and (5) sequence, structure-docking based B-cell epitopes prediction, while T-cell epitopes were predicted by inhibitory concentration and binding score methods. Structural-based detailed features, phylogenetic and sequences analysis have identified Ole e 12 as phenylcoumaran benzylic ether reductase. A catalytic mechanism has been proposed for Ole e 12 which display Lys133 as one of the conserved residues of the IRLs catalytic tetrad (Asn-Ser-Tyr-Lys). Structure characterization revealed a conserved protein folding among plants IRLs. However, sequence polymorphism significantly affected residues involved in the catalytic pocket structure and environment (cofactor and substrate interaction-recognition). It might also be responsible for IRLs isoforms functionality and regulation, since micro-heterogeneities affected physicochemical and posttranslational motifs. This polymorphism might have large implications for molecular differences in B- and T-cells epitopes of Ole e 12, and its identification may help designing strategies to improve the component-resolving diagnosis and immunotherapy of pollen and food allergy through development of molecular tools.

  10. Substrate Trapping in Crystals of the Thiolase OleA Identifies Three Channels That Enable Long Chain Olefin Biosynthesis

    Energy Technology Data Exchange (ETDEWEB)

    Goblirsch, Brandon R.; Jensen, Matthew R.; Mohamed, Fatuma A.; Wackett, Lawrence P.; Wilmot, Carrie M.

    2016-11-04

    Phylogenetically diverse microbes that produce long chain, olefinic hydrocarbons have received much attention as possible sources of renewable energy biocatalysts. One enzyme that is critical for this process is OleA, a thiolase superfamily enzyme that condenses two fatty acyl-CoA substrates to produce a β-ketoacid product and initiates the biosynthesis of long chain olefins in bacteria. Thiolases typically utilize a ping-pong mechanism centered on an active site cysteine residue. Reaction with the first substrate produces a covalent cysteine-thioester tethered acyl group that is transferred to the second substrate through formation of a carbon-carbon bond. Although the basics of thiolase chemistry are precedented, the mechanism by which OleA accommodates two substrates with extended carbon chains and a coenzyme moiety—unusual for a thiolase—are unknown. Gaining insights into this process could enable manipulation of the system for large scale olefin production with hydrocarbon chains lengths equivalent to those of fossil fuels. In this study, mutagenesis of the active site cysteine in Xanthomonas campestris OleA (Cys143) enabled trapping of two catalytically relevant species in crystals. In the resulting structures, long chain alkyl groups (C12 and C14) and phosphopantetheinate define three substrate channels in a T-shaped configuration, explaining how OleA coordinates its two substrates and product. The C143A OleA co-crystal structure possesses a single bound acyl-CoA representing the Michaelis complex with the first substrate, whereas the C143S co-crystal structure contains both acyl-CoA and fatty acid, defining how a second substrate binds to the acyl-enzyme intermediate. An active site glutamate (Gluβ117) is positioned to deprotonate bound acyl-CoA and initiate carbon-carbon bond formation.

  11. Molecular and biochemical characterization of the OLE-1 high-oleic castor seed (Ricinus communis L.) mutant.

    Science.gov (United States)

    Venegas-Calerón, Mónica; Sánchez, Rosario; Salas, Joaquín J; Garcés, Rafael; Martínez-Force, Enrique

    2016-07-01

    The natural OLE-1 high-oleic castor mutant has been characterized, demonstrating that point mutations in the FAH12 gene are responsible for the high-oleic phenotype. The contribution of each mutation was evaluated by heterologous expression in yeast, and lipid studies in developing OLE-1 seeds provided new evidence of unusual fatty acids channeling into TAGs. Ricinus communis L. is a plant of the Euphorbiaceae family well known for producing seeds whose oil has a very high ricinoleic (12-hydroxyoctadecenoic) acid content. Castor oil is considered the only commercially renewable source of hydroxylated fatty acids, which have many applications as chemical reactants. Accordingly, there has been great interest in the field of plant lipid biotechnology to define how ricinoleic acid is synthesized, which could also provide information that might serve to increase the content of other unusual fatty acids in oil crops. Accordingly, we set out to study the biochemistry of castor oil synthesis by characterizing a natural castor bean mutant deficient in ricinoleic acid synthesis (OLE-1). This mutant accumulates high levels of oleic acid and displays remarkable alterations in its seed lipid composition. To identify enzymes that are critical for this phenotype in castor oil, we cloned and sequenced the oleate desaturase (FAD2) and hydroxylase (FAH12) genes from wild-type and OLE-1 castor bean plants and analyzed their expression in different tissues. Heterologous expression in yeast confirmed that three modifications to the OLE-1 FAH12 protein were responsible for its weaker hydroxylase activity. In addition, we studied the expression of the genes involved in this biosynthetic pathway at different developmental stages, as well as that of other genes involved in lipid biosynthesis, both in wild-type and mutant seeds.

  12. Los periódicos españoles, en la textura del siglo XX

    Directory of Open Access Journals (Sweden)

    Dr. Kevin G. Barnhurst

    1999-01-01

    Full Text Available Presentación del resultado de una investigación realizada en la Universidad de La Laguna por un grupo dirigido por los profesores K.G. Barnhurst y J.M. de Pablos, durante parte de un año sabático del primero, profesor entonces en la Syracuse University. El trabajo se basó en un trabajo semejante realizado por el Dr. Barnhurst sobre la prensa de Estados Unidos y vertido ahora al diseño de los diarios españoles, con objeto de extraer una clasificación según el tipo de diseño.

  13. Enhancement of light extraction efficiency in OLED with two-dimensional photonic crystal slabs

    Institute of Scientific and Technical Information of China (English)

    Rongjin Yan; Qingkang Wang

    2006-01-01

    Light extraction efficiency of organic light emitting diode (OLED) based on various photonic crystal slab (PCS) structures was studied. By using the finite-difference time-domain (FDTD) method, we investigated the effect of several parameters, including filling factor and lattice constant, on the enhancement of light extraction efficiency of three basic PCSs, and got the most effective one. Two novel designs of "interlaced"and "double-interlaced" PCS structures based on the most effective basic PCS structure were introduced,and the "interlaced" one was proved to be even more efficient than its prototype. Large enhancement of light extraction efficiency resulted from the coupling to leaky modes in the expended light cone of a band structure, the diffraction in the space between columns, as well as the strong scattering at indium-tinoxide/glass interfaces.

  14. Efectos de Internet y las redes sociales en los corresponsales de guerra españoles

    Directory of Open Access Journals (Sweden)

    Eva Lavín de las Heras

    2015-07-01

    Full Text Available La aparición de Internet y las redes sociales han provocado cambios en el paradigma informativo, en la actualidad la información ya no fluye de forma unidireccional, dando lugar a nuevos actores, los llamados periodistas ciudadanos. Pero también, ha obligado a los periodistas profesionales a utilizar estas nuevas herramientas para acercarse al usuario. Son muchos los estudios sobre estos efectos, pero pocos, los que los relacionan con el trabajo de los corresponsales de guerra españoles. Por ello, este artículo pretendemos investigar a través del método cualitativo, con la realización de catorce entrevistas en profundidad,cómo ha afectado a la cobertura de conflictos y en concreto a su trabajo, la aparición de estos nuevos medios.

  15. [Dr. Puigvert and Archivos Españoles de Urología].

    Science.gov (United States)

    Pérez Albacete, Mariano

    2006-04-01

    For the celebration of the first Century of Dr. Antonio Puigvert Gorro's birth we want to know his contribution to and relationship with Archivos Españoles de Urología. We review all articles published by Dr. Puigvert, and additionally all articles with reference to his person and his work; we also review his written works and biography. He was one of the founders of the journal and always maintained a great cooperation until the '70s; he published important works in it, which are analyzed. We also emphasize his contribution to Urology in addition to his dedication to the history of the speciality. Dr. Puigvert is one of the most distinguished figures in the Spanish Urology, with an immense working capacity and written works. In his works published in Archivos he presents the results of his observations and his studies, as well as part of his innovations, ideas, and discoveries, that he later left in his urology books.

  16. Growth of L-Valinium Aluminium Chloride single crystal for OLED and super-capacitor applications

    Science.gov (United States)

    Kalaivani, D.; Vijayalakshmi, S.; Theras, J. Elberin Mary; Jayaraman, D.; Joseph, V.

    2015-12-01

    L-Valinium Aluminium Chloride (LVAC), a novel semi-organic material, was grown using slow evaporation under isothermal condition. The single crystal data reveal that the grown crystal belongs to monoclinic system. The SEM micrographs give clear picture about the surface morphology. Further, they confirm the inclusion of aluminium chloride into atomic sites of L-Valine. The compositional elements present in the crystal were identified through EDAX analysis. The mass spectral analysis was carried out to determine the molecular weight of the grown crystal. The optical transparency of the grown crystal was investigated by UV-vis-NIR spectrum. FTIR spectral study was used to identify the functional groups present in the grown material. The luminescence characteristics of grown material were analysed to confirm the effect of metal ion on the ligand. This property makes the material suitable for OLED application. The supercapacitive performance of the grown crystal was finally studied using cyclic voltammetry.

  17. Tetraaryl pyrenes: photophysical properties, computational studies, crystal structures, and application in OLEDs

    KAUST Repository

    El-Assaad, Tarek H.

    2015-10-15

    Pyrene was derivatized in positions 1, 3, 6, and 8 to yield a series of nine tetraarylpyrenes for which absorption, emission, emission lifetimes and solvatochromism in solution were determined. The fluorescence quantum yields in thin films and crystalline state, electrochemistry, and quantum-chemical calculations were completed for the series along with the X-ray crystal structure analysis of compounds 1, 2, 4, 5, 7, and 9. Compounds 2, 3, 4 as well as 7 were identified as the most suitable candidates for OLED application. Notably, in an unoptimized single-layer device geometry, these compounds exhibited blue electroluminescence coupled with impressively low turn-on voltages and high maximum luminances such as 2.8 V and 13 542 cd m-2 at 8.2 V for compound 2, respectively. © The Royal Society of Chemistry 2016.

  18. Molecular Spintronic Devices: from Molecular Spin Valves to Spin-OLEDs

    OpenAIRE

    Gómez Miralles, Sara

    2017-01-01

    La investigación llevada a cabo durante el periodo de tesis doctoral y que se describe en este manuscrito pertenece al campo de la espintrónica molecular. Ha sido motivada por el deseo de incorporar nuevos materiales moleculares a dispositivos espintrónicos y ahondar en la comprensión de la inyección y el transporte de espín en este tipo de capas, a través del estudio de dispositivos como la válvula de espín molecular y el spin-OLED. En 1988 Albert Fert y Peter Grünberg descubrieron que la...

  19. Bright coppertunities: efficient OLED devices with copper(I)iodide-NHetPHOS-emitters

    Science.gov (United States)

    Wallesch, Manuela; Volz, Daniel; Fléchon, Charlotte; Zink, Daniel M.; Bräse, Stefan; Baumann, Thomas

    2014-10-01

    The mass market application of OLEDs is currently hindered because i) the materials are too expensive and contain rare metals such as iridium and ii) current processing techniques are elaborate and cannot easily be up-scaled. Solution processable Cu(I)-complexes promise to solve both problems with one blow: Copper is an abundant metal, which offers new opportunities to develop materials for OLEDs. Due to their structural diversity, Cu(I) emitters allow for the design of materials with tunable properties. Beside this, it is also possible to adjust solution properties and introduce functionalities for cross-linking. The new materials feature exciting photophysical properties such as PLQY values close to unity and a tunable emission. The emission decay times are in the range of common emitters or lower, which is expected to reduce efficiency roll-off at high driving voltages. Cu(I)-complexes often feature thermally-activated delayed fluorescence (TADF). As a consequence, they can make use of triplet and singlet excitons in a process called Singlet Harvesting, which paves the way for high efficiencies. Unlike Ir(III)-complexes such as Irppy3, triplet-triplet annihilation does not occur when using Cu(I), even in very high doping concentrations. The feasibility of NHetPHOS-type Cu(I)-complexes is demonstrated as well as strategies that enable a smart crosslinking process, where the Cu(I) emitters themselves play an important role. In addition, high-brightness devices, which were operated at medium voltages, yielding 50.000 cd m-2 are shown. In a showcase example, we recently presented a device with an external quantum efficiency greater than 20% with a solution processed Cu(I)-PyrPHOS-device without using outcoupling techniques.

  20. Highly luminescent pure-red-emitting fluorinated β-diketonate europium(III) complex for full solution-processed OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Joao P. [CEMDRX, Physics Department, Universidade de Coimbra, Rua Larga, Coimbra P-3004-516 (Portugal); Serviço de Medicina Nuclear, SESARAM E.P.E., Avenida Luís de Camões 57, Funchal 9004-514, Madeira (Portugal); Martín-Ramos, Pablo [CEMDRX, Physics Department, Universidade de Coimbra, Rua Larga, Coimbra P-3004-516 (Portugal); Higher Technical School of Telecommunications Engineering, Universidad de Valladolid, Campus Miguel Delibes, Paseo Belén 15, Valladolid 47011 (Spain); Coya, Carmen, E-mail: carmen.coya@urjc.es [Escuela Superior de Ciencias Experimentales y Tecnología (ESCET), Universidad Rey Juan Carlos, Madrid 28933 (Spain); Silva, Manuela Ramos [CEMDRX, Physics Department, Universidade de Coimbra, Rua Larga, Coimbra P-3004-516 (Portugal); Eusebio, M. Ermelinda S. [Chemistry Department, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra P-3004-535 (Portugal); Andrés, Alicia de [Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), Cantoblanco, Madrid 28049 (Spain); Álvarez, Ángel L. [Escuela Superior de Ciencias Experimentales y Tecnología (ESCET), Universidad Rey Juan Carlos, Madrid 28933 (Spain); Martín-Gil, Jesús [Advanced Materials Laboratory, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 44, Palencia 34004 (Spain)

    2015-03-15

    Current manufacturing technologies for OLEDs involve the use of expensive high vacuum techniques and call for thermal stability requirements which are not fulfilled by many materials. These problems disappear when the OLED films are deposited directly from solution. In this study, we have designed, synthesized and characterized a novel octacoordinated complex, Tris(1-(4-chlorophenyl)-4,4,4-trifluoro-1, 3-butanedionate)mono(bathophenanthroline) europium(III), to be used as a “complex-only” emissive layer in wet-processed OLEDs. Upon excitation in the UV region, very efficient energy transfer from the ligands to Eu{sup 3+} takes place, giving rise to intense red emission with very high monochromaticity (R=19), both in powder and as a thin film. The decay times of 754 µs (powder) and 620 µs (thin film) are comparable to those of the most efficient Eu{sup 3+} β-diketonate complexes reported to date. The same energy transfer leading to saturated red and narrow emission is also observed in the OLED device (glass/ITO/PEDOT:PSS/[Eu(cbtfa){sub 3}(bath)]/Ca/Al) when biased at >5.2 V. Its high quantum efficiency (∼60%), good thermal stability up to 200 °C and adequate thin film forming properties make this material a promising chromophore for cost-effective OLEDs. - Highlights: • A highly fluorinated europium(III) octacoordinated complex, [Eu(cbtfa)3(bath)], has been synthesized and its structure elucidated by single crystal X-ray diffraction. • The chosen coordination environment is well-suited for sensitizing the luminescence of the Eu{sup 3+} ion, achieving very efficient energy transfer from the organic ligands (excited in the UV region) to the rare earth ion, leading to highly efficient (Q∼60% in crystalline powder and Q∼50% in thin film) and saturated red photoluminescence. • The material has also been integrated into a single active layer, full solution-processed OLED, with ITO/PEDOT:PSS/[Eu(cbtfa)3(bath)]/ Ca/Al structure.

  1. OLEDs under high current densities. Transient electroluminescence turn-on peaks and singlet-triplet quenching

    Energy Technology Data Exchange (ETDEWEB)

    Kasemann, Daniel

    2012-02-27

    This work focuses on a better understanding of the behavior of organic light emitting devices (OLEDs) under intense electrical excitation. Attaining high exciton densities in organic semiconductors by electrical excitation is of special interest for the field of organic semiconductor lasers (OSLs). In these devices, the high singlet exciton density needed in the active layer to obtain population inversion is easily created by pulsed optical pumping, but direct electrical pumping has not been achieved yet. First, the steps necessary to achieve stable high current densities in organic semiconductors are discussed. After determining the optimal excitation scheme using single p-doped transport layers, the device complexity is increased up to full p-i-n OLEDs with their power dependent emission spectra. For this purpose, two exemplary emitter systems are chosen: the fluorescent laser dye 4-dicyanomethylene-2-methyl-6-p-dimethylaminostyryl-4H-pyran (DCM) doped into Aluminum(III)bis (2-methyl-8-quinolinato)-4-phenylphenolate (Alq{sub 3}) and the efficient phosphorescent emitter system N,N'-di(naphthalen-1-yl)-N,N'-diphenyl-benzidine (alpha-NPD) doped by Iridium(III) bis(2-methyl-dibenzo[f,h]quinoxaline)(acetylacetonate) (Ir(MDQ){sub 2}(acac)). For pulsed excitation using 50 ns pulses and a repetition rate of 1 kHz, single 100 nm thin p- and n-doped transport layers sustain current densities of over 6 kA/cm{sup 2}. While the maximum current density decreases with increasing device thickness, the full OLEDs still sustain current densities beyond 800 A/cm{sup 2} and exhibit a continuously increasing emission intensity with increasing input power. Next, the time-resolved emission behavior of the singlet and triplet emitter device at high excitation densities is analyzed on the nanosecond scale. Here, the peak emission intensity of the phosphorescent emitter system is found to be more than eight times lower than for the singlet emitter system at comparable current

  2. Improved Hole-Blocking and Electron Injection Using a TPBI Interlayer at the Cathode Interface of OLEDs

    Institute of Scientific and Technical Information of China (English)

    LIAN Jia-Bong; NIU Fang-Fang; LIU Ya-Wei; ZENG Peng-Ju

    2011-01-01

    The effect of a benzimidazole derivative (TPBI) electron injection layer (EIL) on the performance of Alq3 based organic light-emitting devices (OLEDs) with a Cs2CO3/Al cathode is investigated. An increasing current density from 71.9mA/cm2 to 188.3mA/cm2, and an enhanced electroluminescence (EL) efficiency from 3.2cd/A to 3.64cd/A at 9 V are found when a thin TPBI layer (5nm) is inserted at the Alq3/Cs2CO3 interface. After further increasing the TPBI thickness to 10nm, OLEDs display a further increase in EL efficiency to 4.53 cd/A.Our experiment suggests that the TPBI thin layer at the Alq3/Cs2CO3 interface facilitates the electron injection and is also involved with hole-blocking and exciton confinement.%@@ The effect of a benzimidazole derivative(TPBI)electron injection layer(EIL)on the performance of Alga based organic light-emitting devices(OLEDs)with a Cs2C03/Al cathode is investigated.An increasing current density from 71.9mA/cm2 to 188.3mA/cm2, and an enhanced electroluminescence(EL)efficiency from 3.2cd/A to 3.64 cd/A at 9 V are found when a thin TPBI layer(5 nm)is inserted at the Alga/Cs2 C03 interface.After further increasing the TPBI thickness to 10 run, OLEDs display a further increase in EL efficiency to 4.53cd/A.Our experiment suggests that the TPBI thin layer at the Alga/Ca2C03 interface facilitates the electron injection and is also involved with hole-blocking and exciton confinement.

  3. LA INFLUENCIA DE LAS FORMAS INARTICULADAS, INTERJECCIONES Y ONOMATOPEYAS INGLESAS EN LOS TEBEOS ESPAÑOLES

    Directory of Open Access Journals (Sweden)

    Isabel de la Cruz Cabanillas

    2009-10-01

    Full Text Available Los intentos de clasificación de interjecciones, onomatopeyas y formas inarticuladas no han resultado satisfactorios, pues no existe una taxonomía aceptada de forma generalizada. Basándonos en estudios anteriores, el presente trabajo pretende revisar estos fenómenos en tebeos tan netamente españoles como Mortadelo y Filemón, Zipi y Zape, Super López, Bruguelandia y TBO. Para ello se compila un corpus de unidades léxicas que reflejan tanto sonidos inarticulados, como interjecciones y onomatopeyas con el objetivo de estudiar si dichas unidades utilizadas en los tebeos corresponden a la representación de ese sonido articulado, esa interjección o esa onomatopeya en su forma inglesa o en su forma española. Así, se podrán obtener conclusiones sobre la posible influencia de la lengua inglesa en los tebeos españoles a través de la clasificación de las unidades recopiladas en el corpus, aún no tratándose de traducciones sino de producciones nacionales, y posiblemente se podrá determinar hasta qué punto dichas formas podrían entenderse por parte de un hablante hispano sin la ayuda gráfica que supone la viñeta.The attempts at classifying interjections, onomatopoeias and inarticulated forms have not turned out satisfactory, as there is no taxonomy that is widely accepted. Taking as basis previous studies, the present piece of work intends to revise these phenomena in so genuine Spanish comics as Mortadelo y Filemón, Zipi y Zape, Super López, Bruguelandia and TBO. To do so, a corpus of lexical units including inarticulated sounds, interjections and onomatopoeias is compiled in order to examine whether the units used in the comics correspond to the representation of that articulated sound, that interjection or that onomatopoeia in their English form or in their Spanish form. This will allow us to draw conclusions on the possible influence of the English language in the Spanish comics through the classification of the units compiled in

  4. Using deposition rate as a means to alter the properties of small molecule organic glasses for OLED applications

    Science.gov (United States)

    Kearns, Kenneth; Krzyskowski, Paige; Devereaux, Zachary

    2015-03-01

    Organic light emitting diode (OLED) devices rely on vapor-deposited, small molecule organic glasses. Recent work has shown that deposition condition plays a critical role in altering OLED device performance. Here it will be shown that the deposition rate alters the onset and fictive temperatures measured by differential scanning calorimetry (DSC) of the deposited glass. Glasses of the common hole transport materials NPD and TPD were prepared with onset temperatures 17 and 16 K higher, respectively, than the ordinary glass prepared by cooling the supercooled liquid. The thermal stability of glasses in functioning devices can be underestimated due to increases in onset temperature relative to Tg. The fictive temperatures for NPD and TPD were 32 and 27 K lower, respectively, than the Tg of the ordinary glass. These results are consistent with literature reports on other non-OLED glasses where enhanced surface mobility allowed for glasses with similar properties to be made. Ellipsometry studies on NPD showed that the fictive and onset temperatures were consistent with the DSC results. Additionally, the modeled birefringence of the as-deposited NPD glass was non-zero and quickly decreased upon heating above the onset temperature, which has implications for device performance. Formerly at Department of Chemistry, Saginaw Valley State University.

  5. Organic solution-processible electroluminescent molecular glasses for non-doped standard red OLEDs with electrically stable chromaticity

    Energy Technology Data Exchange (ETDEWEB)

    Bi, Xiaoman; Zuo, Weiwei; Liu, Yingliang, E-mail: liuylxn@sohu.com; Zhang, Zhenru; Zeng, Cen; Xu, Shengang; Cao, Shaokui, E-mail: caoshaokui@zzu.edu.cn

    2015-10-15

    Highlights: • The D–A–D electroluminescent molecular glasses are synthesized. • Non-doped red electroluminescent film is fabricated by spin-coating. • Red OLED shows stable wavelength, luminous efficiency and chromaticity. • CIE1931 coordinate is in accord with standard red light in PAL system. - Abstract: Organic light-emitting molecular glasses (OEMGs) are synthesized through the introduction of nonplanar donor and branched aliphatic chain into electroluminescent emitters. The target OEMGs are characterized by {sup 1}H NMR, {sup 13}C NMR, IR, UV–vis and fluorescent spectra as well as elemental analysis, TG and DSC. The results indicated that the optical, electrochemical and electroluminescent properties of OEMGs are adjusted successfully by the replacement of electron-donating group. The non-doped OLED device with a standard red electroluminescent emission is achieved by spin-coating the THF solution of OEMG with a triphenylamine moiety. This non-doped red OLED device takes on an electrically stable electroluminescent performance, including the stable maximum electroluminescent wavelength of 640 nm, the stable luminous efficiency of 2.4 cd/A and the stable CIE1931 coordinate of (x, y) = (0.64, 0.35), which is basically in accord with the CIE1931 coordinate (x, y) = (0.64, 0.33) of standard red light in PAL system.

  6. Structurally Integrated Photoluminescence-Based Lactate Sensor Using Organic Light Emitting Devices (OLEDs) as the Light Source

    Energy Technology Data Exchange (ETDEWEB)

    Qian, Chengliang [Iowa State Univ., Ames, IA (United States)

    2006-01-01

    Multianalyte bio(chemical) sensors are extensively researched for monitoring analytes in complex systems, such as blood serum. As a step towards developing such multianalyte sensors, we studied a novel, structurally integrated, organic light emitting device (OLED)-based sensing platform for detection of lactate. Lactate biosensors have attracted numerous research efforts, due to their wide applications in clinical diagnosis, athletic training and food industry. The OLED-based sensor is based on monitoring the oxidation reaction of lactate, which is catalyzed by the lactate oxidase (LOX) enzyme. The sensing component is based on an oxygen-sensitive dye, Platinum octaethyl porphyrin (PtOEP), whose photoluminescence (PL) lifetime τ decreases as the oxygen level increases. The PtOEP dye was embedded in a thin film polystyrene (PS) matrix; the LOX was dissolved in solution or immobilized in a sol-gel matrix. τ was measured as a function of the lactate concentration; as the lactate concentration increases, τ increases due to increased oxygen consumption. The sensors performance is discussed in terms of the detection sensitivity, dynamic range, and response time. A response time of ~32 sec was achieved when the LOX was dissolved in solution and kept in a closed cell. Steps towards development of a multianalyte sensor array using an array of individually addressable OLED pixels were also presented.

  7. Liderazgo transformacional y género: autoevaluaciones de directivos y directivas españoles

    Directory of Open Access Journals (Sweden)

    ISABEL CUADRADO

    2002-01-01

    Full Text Available El paradigma transformacional/transaccional se ha convertido en una de las principales líneas de investigación en el estudio del liderazgo. Asimismo, el estudio de las diferencias de género ha ocupado un lugar destacado en este tipo de investigaciones. Con el objetivo de investigar las diferencias de género en los estilos de liderazgo transformacional/transaccional, se pidió a una muestra de 118 directivos/as españoles que evaluasen su estilo de liderazgo, mediante el MLQ (Multifactorial Leadership Questionnaire, Bass y Avolio, 1990. Los resultados muestran que, aunque no existen diferencias importantes en las autoevaluaciones de hombres y mujeres directivos/as, sí existe una tendencia en las mujeres a autoevaluarse como más transformacionales que los hombres, y adoptando en mayor medida que éstas conductas de recompensa contingente y menos de liderazgo pasivo. Asimismo, las mujeres perciben que el liderazgo transformacional está más asociado con la eficacia, mientras que los hombres perciben una mayor relación entre este tipo de liderazgo y la satisfacción de los subordinados. Estos resultados se discuten en función de investigaciones previas y del papel de los estereotipos.

  8. Predictores de la adicción en atletas veteranos españoles

    Directory of Open Access Journals (Sweden)

    Francisco Ruiz-Juan

    2016-01-01

    Full Text Available El objetivo del presente estudio se centró, por un lado, en obtener los niveles de adicción al entrenamiento, motivación, ansiedad, satisfacción intrínseca, percepción y creencias sobre las causas del éxito en su deporte de una muestra de 401 atletas veteranos españoles de ambos sexos especialistas en las diversas pruebas de pista. Por otro, se pretendió analizar la predicción de las diferentes dimensiones de la adicción de estos atletas por el resto de constructos psicológicos considerados. Se obtuvieron valiosos datos descriptivos en todos los constructos psicológicos analizados y el análisis regresivo mostró que la subescala positiva de la adicción se podría predecir por puntuar alto en los constructos más deseables y positivos analizados, en concordancia con la hipótesis, mientras que las subescalas negativas lo fueron por puntuar alto en los menos deseables y positivos. Se concluye que la adicción en estos atletas está más cerca de un sano compromiso con su práctica deportiva que de las dimensiones negativas de la adicción.

  9. Científicos españoles exiliados en Cuba

    Directory of Open Access Journals (Sweden)

    Alted Vigil, Alicia

    2002-04-01

    Full Text Available The first part of this article studies the internal situation in Cuba in the 1930's as well as the links between Spanish exiles and the Cuban cultural and academical institutions. It goes on with a review of the exiled scientists that used the island as a temporary residence. The last part offers an analysis of the professional life and main scientific contributions of those scientists who chose to remain in Cuba: Gustavo Pittaluga, Luis Amado-Blanco, Pedro Domingo Sanjuan, Javier Fernández de Castro, Julio López Rendueles, etc.

    En una primera parte se hace un esbozo de la situación existente en Cuba en los años treinta y de la vinculación de los exiliados españoles a instituciones culturales y académicas cubanas. A continuación se habla de los exiliados científicos que utilizaron la isla como lugar de tránsito. Por último, se traza la trayectoria profesional de aquéllos que decidieron establecerse definitivamente en Cuba, destacando sus principales aportes científicos. Entre éstos: Gustavo Pittaluga, Luis Amado-Blanco, Pedro Domingo Sanjuan, Javier Fernández de Castro, Julio López Rendueles y otros.

  10. Degradation of HTL layers during device operation in PhOLEDs

    Science.gov (United States)

    Sivasubramaniam, Varatharajan; Brodkorb, Florian; Hanning, Stephanie; Buttler, Oliver; Loebl, Hans Peter; van Elsbergen, Volker; Boerner, Herbert; Scherf, Ullrich; Kreyenschmidt, Martin

    2009-11-01

    Different analytical tools and methodologies are currently employed to determine degradation products of organic blue light emitting devices in order to identify the failure mechanisms which determine the lifetime of these devices. This article provides a deeper understanding of degradation mechanisms of organic light emitting diodes (OLEDs) during device operation. Degradation products of blue emitting devices containing 8% of the phosphorescent emitter iridium(III)bis(4,6-difluorophenyl)-pyridinato-N,C 2' picolinate (FIrpic) in a matrix containing bis(2-methyl-8-quinolinolato)(4-phenylphenolato)aluminium (BAlq) as electron transport layer (ETL), 4,4',4″-tri( N-carbazolyl)triphenylamine (TCTA) and N, N'-diphenyl- N, N'-bis(1-naphthyl)-1,1'-biphenyl-4,4″-diamine (α-NPD) were investigated using laser desorption ionization (LDI) coupled with a time of flight mass spectrometry (TOF/MS). Especially chemical degradation pathways of the hole transport materials TCTA and α-NPD were investigated. The comparison of experimental data of unstressed and stressed device revealed that new reaction products are formed during the device operation. The linkage of TCTA fragments to the α-NPD core in an interfacial reaction as well as a dimerization of TCTA itself was observed. Ten new reaction products could be characterized via LDI-TOF-MS. Some of these compounds might possess a negative influence on the drop of efficiency and lifetime of blue light emitting devices based on FIrpic.

  11. la percepción de los turistas extranjeros en los destinos españoles

    Directory of Open Access Journals (Sweden)

    Enrique Ortega Martínez

    2005-01-01

    Full Text Available El objetivo principal de este estudio ha sido analizar la importancia que los turistas extranjeros atribuyen a la información sobre lugares y atracciones para visitar una vez que se encuentran en los destinos elegidos. Los resultados de la encuesta realizada a turistas del Reino Unido, Alemania, Francia y Estados Unidos muestra que los turistas de estos cuatro países dan una gran importancia a la información mediante folletos situados en el hall de los hoteles y a la información a través de una breve película disponible en la televisión de la habitación del hotel. Esta importancia es bastante mayor que la importancia que los turistas atribuyen a otros trece servicios hoteleros. La conclusión fundamental del estudio conduce a la necesidad de implantar una adecuada estrategia de comunicación turística en los destinos turísticos españoles.

  12. Diferencias en las circunstancias de riesgo al volante en universitarios guatemaltecos y españoles

    Directory of Open Access Journals (Sweden)

    Sandra Rodríguez Guzmán

    Full Text Available Objetivos. Comparar las diferencias en las circunstancias de riesgo al volante en universitarios de Guatemala y España. Materiales y métodos. Estudio transversal realizado durante el 2007 a 2011 en una muestra de 2130 conductores (1016 en Guatemala y 1114 en España, quienes respondieron un cuestionario autoadministrado que valoraba: patrones de movilidad, uso de dispositivos de seguridad, estilos de conducción e implicación en accidentes de tránsito. Resultados. Los estudiantes de Guatemala se implicaron con mayor frecuencia en circunstancias de riesgo como hablar por el teléfono móvil (74,4% vs 24,3%, distraerse (47,1% vs 18,8% o no usar el cinturón de seguridad (23,9% vs 5,9% con respecto a los españoles; en el análisis ajustado el reporte de haber tenido algún accidente fue 4,8 veces mayor (IC 95% 3,1-7,4 en universitarios de Guatemala. Conclusiones. Existen factores dependientes del vehículo, entorno físico y de índole social, que podrían tener un rol importante en las diferencias detectadas en ambas poblaciones

  13. Factores motivacionales en una muestra de hombres españoles que pagan por servicios sexuales.

    Directory of Open Access Journals (Sweden)

    Carmen Meneses

    2010-01-01

    Full Text Available Los motivos para pagar por sexo fueron estudiados en una muestra de 138 clientes españoles mediante un cuestionario autoadministrado. Desde el análisis factorial se han identificado seis factores como razones para pagar servicios sexuales, que aglutinan el 80,4% de la varianza y que han sido etiquetados como Compañía, Necesidad, Distracción, Riesgo, Dominar y Rapidez. Cuatro de estos factores son significativos y explican, a través de un análisis de regresión, el número de veces que pagan por sexo: Compañía, Rapidez, Riesgo y Dominar. Algunas características de los clientes se relacionan con estos factores: la edad, edad del primer pago de servicios sexuales, la orientación sexual y el tipo de pareja en los últimos seis meses. Solo una de las prácticas sexuales, sexo anal insertito y receptivo, se relaciona con los factores motivacionales, en concreto con los factores Necesidad, Riesgo y Dominar.

  14. Influencia familiar sobre las actitudes ante el consumo de drogas en adolescentes españoles

    Directory of Open Access Journals (Sweden)

    María de la Villa Moral Jiménez

    2013-08-01

    Full Text Available En la cultura mediterránea la familia sigue siendo la agencia socializadora por excelencia, a pesar de diversos cambios referenciales y en la intensidad de los afectos, así como en los estilos disciplinares característicos de nuevas tipologías de familias postmodernas. La influencia y modelado familiar sobre las actitudes ante el consumo de sustancias psicoactivas en adolescentes está bien establecida en indicadores tales como experiencias paternas con las drogas, apego y supervisión parental, clima afectivo, dinámica sociofamiliar, etc. Nuestro objeto de estudio se centra en el análisis psicosocial de tales indicadores, así como en ofrecer un análisis diferencial de la valoración de la relación paterno-filial en relación con las actitudes ante el consumo de drogas en un colectivo de adolescentes españoles. Se ha confirmado una mayor permisividad actitudinal y menor concienciación ante los efectos dañinos de las drogas en los hijos de padres consumidores de sustancias psicoactivas tanto legales como ilegales. Se confirma la importancia psicosocial del Apoyo más valorado por los adolescentes que no consumen drogas, así como la percepción diferencial del empleo del Castigo-Coerción y de la Reprobación en adolescentes consumidores que presentan niveles de mayor permisividad actitudinal.

  15. Militares españoles transmigrantes de Cuba a México, 1898-1910

    Directory of Open Access Journals (Sweden)

    Herrera B., Maria de Socorro

    2003-08-01

    Full Text Available This article analyzes the emigration of Spanish military men from Cuba to Mexico at the end of the Cuban wars for independence. After 1898, these military preferred to emigrate to Mexico rather than remaining in Cuba or returning to Spain. In Mexico they tried to solve problems of money and other legal affairs related to the Ministry of War and Navy in Spain. This migration is characterized as a transmigratory movement.

    El objetivo de este artículo es analizar la emigración de Cuba a México de algunos militares españoles al término de las guerras de independencia de esta Isla, en el ámbito de los movimientos de transmigración. Este trabajo muestra cómo después de 1898, dichos militares prefirieron emigrar a México en lugar de permanecer en Cuba o de volver a España. Desde México, algunos de ellos tramitaban asuntos pendientes con el Ministerio de Guerra y Marina español.

  16. Modifying the organic/electrode interface in Organic Solar Cells (OSCs) and improving the efficiency of solution-processed phosphorescent Organic Light-Emitting Diodes (OLEDs)

    Energy Technology Data Exchange (ETDEWEB)

    Xiao, Teng [Iowa State Univ., Ames, IA (United States)

    2012-01-01

    Organic semiconductors devices, such as, organic solar cells (OSCs), organic light-emitting diodes (OLEDs) and organic field-effect transistors (OFETs) have drawn increasing interest in recent decades. As organic materials are flexible, light weight, and potentially low-cost, organic semiconductor devices are considered to be an alternative to their inorganic counterparts. This dissertation will focus mainly on OSCs and OLEDs. As a clean and renewable energy source, the development of OSCs is very promising. Cells with 9.2% power conversion efficiency (PCE) were reported this year, compared to < 8% two years ago. OSCs belong to the so-called third generation solar cells and are still under development. While OLEDs are a more mature and better studied field, with commercial products already launched in the market, there are still several key issues: (1) the cost of OSCs/OLEDs is still high, largely due to the costly manufacturing processes; (2) the efficiency of OSCs/OLEDs needs to be improved; (3) the lifetime of OSCs/OLEDs is not sufficient compared to their inorganic counterparts; (4) the physics models of the behavior of the devices are not satisfactory. All these limitations invoke the demand for new organic materials, improved device architectures, low-cost fabrication methods, and better understanding of device physics. For OSCs, we attempted to improve the PCE by modifying the interlayer between active layer/metal. We found that ethylene glycol (EG) treated poly(3,4-ethylenedioxythiophene): polystyrenesulfonate (PEDOT: PSS) improves hole collection at the metal/polymer interface, furthermore it also affects the growth of the poly(3- hexylthiophene) (P3HT):phenyl-C61-butyric acid methyl ester (PCBM) blends, making the phase segregation more favorable for charge collection. We then studied organic/inorganic tandem cells. We also investigated the effect of a thin LiF layer on the hole-collection of copper phthalocyanine (CuPc)/C70-based small molecular OSCs. A

  17. GeoPower – Geothermische Potentiale im Norden

    DEFF Research Database (Denmark)

    Kirsch, Reinhard; Hese, Fabian; Offermann, Petra;

    Das INTERREG IVa Projekt GeoPower hatte zum Ziel, Planungsgrundlagen für die Nutzung hydrothermaler Energie für das nördliche Schleswig-Holstein und das südliche Jütland (Dänemark) zu schaffen. Projektpartner waren die Geologischen Dienste von Dänemark und Grönland (GEUS) und Schleswig Holstein (......-Instituts für Geowissenschaftliche Gemeinschaftsaufgaben (LIAG, Hannover) eingeflossen und werden auf der Homepage von GEUS verfügbar sein. Die Projektergebnisse sind auch in einer Projektbroschüre zusammengefasst, die vom LLUR bzw. von den Autoren kostenfrei bezogen werden kann....

  18. Environmental impact assessment in the Nordic Countries; Miljoekonsekvensbeskrivningar i Norden

    Energy Technology Data Exchange (ETDEWEB)

    Broden, K. [Studsvik RadWaste AB (Sweden); Palsson, S.E. [Geislavarnir rikisins (Iceland); Poroddsson, P. [Skipulagsstofnun (Iceland)

    2000-12-01

    A meeting on Environmental Impact Assessment has been held in Iceland, September 2-6, 2000. It was held within the framework of the project NKS/SOS-3 (Radioactive waste), subproject NKS/SOS-3.1 (Environmental Impact Assessment). The meeting included presentations, discussions and a study trip to the Egilsstadir and Myvatn districts. (au)

  19. Arsager til kraeft i Norden og muligheder for forebyggelse

    DEFF Research Database (Denmark)

    Winther, J F; Dreyer, L; Olsen, J H

    1998-01-01

    The purpose of this work is to address future possibilities for avoiding cancer. We elucidate the most important known causes of cancer in the Nordic countries during the second half of this century and provide estimates of the numbers of cancer cases that might be avoided by the year 2000 if tho......-described modifications of dietary habits. These figures indicate that the most efficient way of reducing cancer morbidity would be to reduce the prevalence of exposure of the population to cancer-causing agents....

  20. Bilder des heiligen Nordens in Antike, Patristik und Mittelalter

    OpenAIRE

    2001-01-01

    En este trabajo exponemos, a través de fuentes relevantes en las literaturas griega y latina, las connotaciones fabulosas y sagradas atribuidas al norte terrestre (entre los griegos paganos, en el mito de los Hiperbóreos) y celeste (entre algunos autores cristianos de la Antigüedad y de la Edad Media).

  1. Strategier for regulering af bolig- og byfornyelsen i Norden

    DEFF Research Database (Denmark)

    Hansen, Knud Erik; Andersen, Hans Skifter

    , grundlæggende vilkår for fornyelse uden offentlig indblanding, den historiske udvikling i byfornyelsespolitikken, den samlede byfornyelsesaktivitet i landene og det offentliges omkostninger og støtteniveau. - Måderne at styre på har været meget forskellige. De kan dog grupperes i tre former: direkte offentlig...

  2. Sunnyboy of the North; Sunnyboy im hohen Norden

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2008-07-01

    Parking tickets, handball, North Sea, Baltic Sea: This is what most Germans know about Flensburg. Hardly anyone will associate solar energy in conjunction with this small town on the Danish border. This is an error, as the insolation values of the German coastal regions are quite near those of Freiburg, Germany's number one solar city in the Black Forest. Kai Lippert, director and founder of the EWS company, was aware of this quite early and constructed his PV business in the extreme North. (orig.)

  3. Tradable emission quotas in Scandinavia; Omsettelige utslippskvoter i Norden

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    This report discusses the trading of emission quotas of greenhouse gases in Scandinavia. It begins with a study of the experience with quotas of SO{sub 2} and other emissions in U.S.A., with tradable fish quotas in Iceland and New Zealand and with tradable production quotas for chlorofluorocarbons (CFCs). It then sketches possible systems, structure and actors for a Scandinavian quota system. One of the motivations behind a Scandinavian quota system is that tradable quotas can be a cost-effective instrument and help reduce the costs of emission reductions in Scandinavia. Another motivation would be that it would help to solve the problems caused by the considerable weather-induced variation in the CO{sub 2} emissions from the power sector. Reducing the emission of greenhouse gases is a responsibility of the national governments. If it is undesirable that individual actors should trade quotas of their own accord, then intergovernmental trade with quotas may be coupled to the use of other means within each country to keep the country`s total quota within its limit. A system including private actors must meet some basic requirements to work well: (1) it must have a sufficiently large number of actors with different measure costs, (2) it must be trusted by all depending on it, (3) it must be flexible, and (4) it must impose upon the trade as few restrictions as possible. The system should include most of the greenhouse gases, not only CO{sub 2}. It may be useful, however, to start with a simple system comprising only CO{sub 2} emission and the report is essentially restricted to CO{sub 2}. Three different quota systems are discussed, their initial distribution and time horizons. The origin of a market for quota trading, control measures and management of the quota system are also discussed. 18 refs.

  4. [Evaluation of the quality of Anales Españoles de Pediatría versus Medicina Clínica].

    Science.gov (United States)

    Bonillo Perales, A

    2002-08-01

    To compare the scientific methodology and quality of articles published in Anales Españoles de Pediatría and Medicina Clínica. A stratified and randomized selection of 40 original articles published in 2001 in Anales Españoles de Pediatría and Medicina Clínica was made. Methodological errors in the critical analysis of original articles (21 items), epidemiological design, sample size, statistical complexity and levels of scientific evidence in both journals were compared using the chi-squared and/or Student's t-test. No differences were found between Anales Españoles de Pediatría and Medicina Clínica in the critical evaluation of original articles (p > 0.2). In original articles published in Anales Españoles de Pediatría, the designs were of lower scientific evidence (a lower proportion of clinical trials, cohort and case-control studies) (17.5 vs 42.5 %, p 0.05), sample sizes were smaller (p 0.003) and there was less statistical complexity in the results section (p 0.03). To improve the scientific quality of Anales Españoles de Pediatría, improved study designs, larger sample sizes and greater statistical complexity are required in its articles.

  5. Life test results of OLED-XL long-life devices for use in active matrix organic light emitting diode (AMOLED) displays for head mounted applications

    Science.gov (United States)

    Fellowes, David A.; Wood, Michael V.; Hastings, Arthur R., Jr.; Ghosh, Amalkumar P.; Prache, Olivier

    2007-04-01

    eMagin Corporation has recently developed long-life OLED-XL devices for use in their AMOLED microdisplays for head-worn applications. AMOLED displays have been known to exhibit high levels of performance with regards to contrast, response time, uniformity, and viewing angle, but a lifetime improvement has been perceived to be essential for broadening the applications of OLED's in the military and in the commercial market. The new OLED-XL devices gave the promise of improvements in usable lifetime over 6X what the standard full color, white, and green devices could provide. The US Army's RDECOM CERDEC NVESD performed life tests on several standard and OLED-XL panels from eMagin under a Cooperative Research and Development Agreement (CRADA). Displays were tested at room temperature, utilizing eMagin's Design Reference Kit driver, allowing computer controlled optimization, brightness adjustment, and manual temperature compensation. The OLED Usable Lifetime Model, developed under a previous NVESD/eMagin SPIE paper presented at DSS 2005, has been adjusted based on the findings of these tests. The result is a better understanding of the applicability of AMOLEDs in military and commercial head mounted systems: where good fits are made, and where further development might be needed.

  6. Microwave assisted transformation of N,N-diphenylamine as precursors of organic light emitting diodes (OLED)

    Energy Technology Data Exchange (ETDEWEB)

    Jefri,; Wahyuningrum, Deana, E-mail: deana@chem.itb.ac.id [Organic Chemistry Research Division, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132 (Indonesia)

    2015-09-30

    In this research, study on the transformation of N,N-diphenylamine (DPA) using iodine (I2) utilizing solid state Microwave Assisted Organic Synthesis (MAOS) method has been carried out. The reaction was performed by variations of three parameters namely the mole of reagents, the amount and type of solid support (alumina/Al2O3), and the reaction conditions. Experimental results showed that neutral-alumina was a better solid support than basic-alumina. The optimum temperature for the reaction was approximately at 125-133 °C with reaction time of 15 minutes and microwave reactor power at 500-600 W. The separation of the yellowish green product solution with preparative Thin Layer Chromatography (TLC) method using n-hexane:ethyl acetate = 4:1 (v/v) as eluent yielded two fractions (I and II) and both fractions can undergo fluorescence under 365 nm UV light. Based on the LC chromatogram with methanol:water = 95:5 (v/v) as eluent and its corresponding mass spectra (ESI+), fraction I contained three compounds, which were tetracarbazole A, triphenylamine, and impurities in the form of plasticizer such as bis(2-ethylhexyl) phthalate. Fraction II also contained three compounds, which were tetracarbazole C, tetraphenylhydrazine, and plasticizer such as bis(2-ethylhexyl) phthalate. Both FT-IR (KBr disks) and NMR (500 MHz, CDCl{sub 3}) spectra of fraction I and II confirmed the aromatic amine groups in those compounds. The observed fluorescence colors of fraction I and II were violet and violet-blue, respectively. Based on their structures and fluorescence characters, the compounds in fraction I and II have the potential to be used as Organic Light Emitting Diode (OLED) compound precursors.

  7. Sistema de ayuda visual para apoyar aprendizaje de fonemas españoles

    Directory of Open Access Journals (Sweden)

    Enrique San Juan Urrutia

    2013-04-01

    Full Text Available El presente trabajo  tiene como propósito  mostrar un sistema computacional con la capacidad de apoyar el aprendizaje de la  pronunciación de un conjunto determinado de fonemas españoles, dirigido a personas sordas o con dificultades auditivas, que tienen como consecuencia trastornos del habla. La posibilidad de “ver lo que se dice”, puede resultar  muy útil como método para la implantación y rehabilitación del Habla. Visualizar de forma inmediata, mediante una gráfica, los perfiles acústicos de los principales parámetros de la señal de voz y asociarlos con imágenes que representan lo dicho, ha resultado una alternativa adicional muy estimulante en el campo de la Foniatría. Dicho sistema basa su  funcionamiento en la extracción y comparación de parámetros fundamentales de las señales de voz, entre los cuales se puede mencionar los LPC (Linear Predictive Coding, Formantes y  coeficientes Ceptrales en la escala de frecuencias de Mel (Mel-frequency cepstral coefficients, MFCCs.  Se espera que el sistema constituya una  herramienta  de apoyo a la rehabilitación de trastornos del habla, reemplazando el canal de realimentación auditivo por un canal de realimentación visual. Es decir, mediante gráficas de los perfiles acústicos y principales parámetros característicos de la señal de voz, con imágenes e indicadores de  avance, se estructura en conjunto una importante herramienta alternativa adicional para la rehabilitación en trastornos del habla.

  8. La educación intercultural en los centros escolares españoles

    Directory of Open Access Journals (Sweden)

    Henar RODRÍGUEZ NAVARRO

    2011-01-01

    Full Text Available Son muchas las iniciativas que sobre educación intercultural se están llevando a cabo en las escuelas de nuestro país. El panorama es variado y adaptado a las decisiones y a las necesidades que cada autonomía ha considerando relevantes. Consideramos interesante visibilizar las prácticas escolares que sobre interculturalidad se han realizado en los centros educativos españoles en las últimas décadas. Empezamos este escrito a través de un repaso de las políticas educativas que han dado cobertura a tales actuaciones para describir posteriormente las características concretas de la práctica escolar. Las líneas de análisis que vertebran estas acciones las hemos sintetizado en: I. Los planes de acogida, II. La atención a la diversidad lingüística y cultural, III. Las estructuras escolares cooperativas, IV. La participación de la comunidad educativa, V. La mediación intercultural y la resolución de conflictos, VI. La Formación de Profesorado, VII. Los observatorios de las diferentes comunidades. Podemos entender todas estas actuaciones desde dos enfoques diferenciados; uno más relacionado con la educación inclusiva y otro que actúa desde la educación compensatoria. Relacionamos al final las acciones de la interculturalidad educativa con los principios básicos de las comunidades de aprendizaje, considerándolas un soporte desde el que dar cobertura a las acciones educativas previamente descritas.

  9. Prevalencia de acontecimientos potencialmente traumáticos en universitarios españoles

    Directory of Open Access Journals (Sweden)

    Noemí Pereda

    2013-01-01

    Full Text Available Objetivos: La prevalencia de acontecimientos potencialmente traumáticos en todas las sociedades y contextos es más alta de lo que podría suponerse. El objetivo de este trabajo es describir aquellos acontecimientos potencialmente traumáticos experimentados por una muestra de jóvenes universitarios españoles. Métodos: Se aplicó el Traumatic Life Events Questionnaire a 1033 estudiantes universitarios (M = 21.71 años; DT = 2.63 de la Universidad de Barcelona. Resultados: Un 92.3% de los estudiantes (93.4% de los varones y 91.8% de las mujeres manifestaron haber experimentado al menos un acontecimiento potencialmente traumático a lo largo de su vida. La media de acontecimientos distintos vivenciados fue de 3.58 (DT = 2.47. Se observaron diferencias significativas en el número de acontecimientos experimentados por varones (M = 3.86; DT = 2.60 y mujeres (M = 3.45; DT = 2.40. Conclusiones: La prevalencia de acontecimientos potencialmente traumáticos en población universitaria española es más elevada que la encontrada en estudios publicados previamente. Las diferencias en los acontecimientos que experimentan ambos sexos deberían tenerse en cuenta al evaluar e intervenir en este tipo de situaciones. La importancia de la valoración personal del encuestado respecto a la vivencia de acontecimientos potencialmente traumáticos debe considerarse.

  10. Microwave assisted transformation of N,N-diphenylamine as precursors of organic light emitting diodes (OLED)

    Science.gov (United States)

    Jefri, Wahyuningrum, Deana

    2015-09-01

    In this research, study on the transformation of N,N-diphenylamine (DPA) using iodine (I2) utilizing solid state Microwave Assisted Organic Synthesis (MAOS) method has been carried out. The reaction was performed by variations of three parameters namely the mole of reagents, the amount and type of solid support (alumina/Al2O3), and the reaction conditions. Experimental results showed that neutral-alumina was a better solid support than basic-alumina. The optimum temperature for the reaction was approximately at 125-133 °C with reaction time of 15 minutes and microwave reactor power at 500-600 W. The separation of the yellowish green product solution with preparative Thin Layer Chromatography (TLC) method using n-hexane:ethyl acetate = 4:1 (v/v) as eluent yielded two fractions (I and II) and both fractions can undergo fluorescence under 365 nm UV light. Based on the LC chromatogram with methanol:water = 95:5 (v/v) as eluent and its corresponding mass spectra (ESI+), fraction I contained three compounds, which were tetracarbazole A, triphenylamine, and impurities in the form of plasticizer such as bis(2-ethylhexyl) phthalate. Fraction II also contained three compounds, which were tetracarbazole C, tetraphenylhydrazine, and plasticizer such as bis(2-ethylhexyl) phthalate. Both FT-IR (KBr disks) and NMR (500 MHz, CDCl3) spectra of fraction I and II confirmed the aromatic amine groups in those compounds. The observed fluorescence colors of fraction I and II were violet and violet-blue, respectively. Based on their structures and fluorescence characters, the compounds in fraction I and II have the potential to be used as Organic Light Emitting Diode (OLED) compound precursors.

  11. Un pasaporte hacia la libertad. Súplicas y solicitudes de los exiliados españoles al Comité Técnico de Ayuda a los Republicanos Españoles (CTARE)

    OpenAIRE

    Adámez Castro, Guadalupe

    2016-01-01

    Tras la derrota republicana en la Guerra Civil fueron muchos los españoles que tuvieron que huir y comenzar una nueva vida. La gran mayoría se asentó en Francia aunque muchos otros optaron por pedir asilo en el continente americano, especialmente en México. Su presidente, Lázaro Cárdenas, puso como condición principal para esta acogida que las instituciones de ayuda a los refugiados, creadas con los fondos de la República española, financiaran los viajes de estos hacia el país ...

  12. Desarrollo de un banco de datos sobre características de los alimentos españoles

    OpenAIRE

    Méndez, Aida; Galbán Ferrús, C.; Fernández Muñoz, María Teresa; Ribas, M; Moreno, Luz

    1991-01-01

    [ES] Se describe el banco de datos sobre componentes de alimentos españoles: productos lácteos y vinos. Se ha desarrollado, en fase experimental; en el Instituto de Información y Documentación en Ciencia y Tecnología (ICYT); en colaboración con el Instituto de Fermentaciones Industriales, pertenecientes al CSIC. Además de información factual sobre componentes de alimentos. proporciona información adicional de tipo bibliográfico como: trabajos, autores, instituciones, métodos...

  13. Control de pantallas uOled por puerto serie usando un microcontrolador Arduino ATMEGA2560 para representar animaciones

    OpenAIRE

    Gómez Fernández, Lorena

    2012-01-01

    En este proyecto se busca la implementación de un sistema que permita la expresión de un robot personal o de servicios mediante el uso de displays, utilizando comunicación serie a través de un micro. El objetivo principal definido para el proyecto es controlar dos pantallas uOLED-128-G1 por puerto serie, utilizando un microcontrolador Arduino ATmega2560. Este objetivo puede desglosarse en los siguientes objetivos de trabajo: - Estudio de diferentes propuestas de displays y protoco...

  14. Fotógrafos contemporáneos españoles: preproducción de un documental

    OpenAIRE

    GÓMEZ TRILLO, MARÍA DEL CARMEN

    2014-01-01

    This assignment presents the development of the project "Fotógrafos contemporáneos españoles: preproducción de un documental¿ carried out to obtain the degree in Audiovisual Communication at the Universidad Politécnica de Valencia. It is intended to describe the processes and phases required for the preproduction of a documentary consisting of an investigation before the audio-visual script, and the later application of the same one. To be able to realize of a more effective form the later...

  15. Francisco Romero y las cartas de los exiliados españoles: José Ferrater Mora

    OpenAIRE

    2016-01-01

    El propósito de este artículo es analizar las cartas entre Francisco Romero y José Ferrater Mora durante sus vidas. Se consideran algunos de los aspectos que compartieron acerca de sus trabajos e ideas en el contexto intelectual y político. El artículo se desarrolla en cuatro partes: 1. La Guerra Civil y los intelectuales españoles exiliados. 2. La colección epistolar de Francisco Romero. 3. José Ferrater Mora y sus cartas. 4. Breves conclusiones. REVISTA GRUPO 1. The aim of this article ...

  16. Las fronteras septentrionales del Pacifico americano: españoles, rusos e ingleses en la conquista de la Alta California

    OpenAIRE

    Ruiz Rodríguez, Ignacio

    2014-01-01

    A mediados del siglo xviii diversas expediciones del Imperio Ruso habían llegado a los confines más orientales de Siberia, algunas de las cuales acabaron descubriendo unas nuevas tierras en lo que hoy conocemos Alaska. Aquella noticia, transmitida por los embajadores españoles residente ante la corte rusa, resultó ser alarmante para los intereses de la Monarquía Hispánica, en esas inmensas tierras de la América Septentrional. Acababa de nacer la última gran exploración española en el Nuevo Mu...

  17. Low Power, Red, Green and Blue Carbon Nanotube Enabled Vertical Organic Light Emitting Transistors for Active Matrix OLED Displays

    Energy Technology Data Exchange (ETDEWEB)

    McCarthy, M. A. [University of Florida, Gainesville; Liu, B. [University of Florida, Gainesville; Donoghue, E. P. [University of Florida, Gainesville; Kravchenko, Ivan I [ORNL; Kim, D. Y. [University of Florida, Gainesville; So, Franky [University of Florida, Gainesville; Rinzler, A. G. [University of Florida, Gainesville

    2011-01-01

    Organic semiconductors are potential alternatives to polycrystalline silicon as the semiconductor used in the backplane of active matrix organic light emitting diode displays. Demonstrated here is a light-emitting transistor with an organic channel, operating with low power dissipation at low voltage, and high aperture ratio, in three colors: red, green and blue. The single-wall carbon nanotube network source electrode is responsible for the high level of performance demonstrated. A major benefit enabled by this architecture is the integration of the drive transistor, storage capacitor and light emitter into a single device. Performance comparable to commercialized polycrystalline-silicon TFT driven OLEDs is demonstrated.

  18. Predictores cognitivos de la lectura a los siete años en sujetos españoles

    OpenAIRE

    González-Valenzuela, Mª José; López-Montiel, Dolores; Díaz-Giráldez, Félix

    2016-01-01

    El objetivo de este estudio es conocer la contribución conjunta del conocimiento fonémico, la memoria fonológica y la denominación rápida alfanumérica y no alfanumérica en la explicación de la lectura de palabras y de pseudopalabras en niños españoles de segundo curso de educación primaria. Participaron 116 alumnos de siete años de habla española, pertenecientes a colegios de nivel sociocultural medio y sin necesidades educativas especiales. Se realizaron análisis descriptivos-exploratorios, ...

  19. Creencias de Estudiantes de Secundaria Españoles y Mexicanos sobre las Causas de la Obesidad

    OpenAIRE

    Rigoberto León-Sánchez

    2015-01-01

    Se exploraron, a través de un cuesti onario diseñado ex profeso , las creencias sobre las causas de la obesidad en una muestra de 142 estudiantes de segundo y tercer grados de secundaria (71 españoles y 71 mexicanos). El rango de edad de los participantes fue de 13 a 16 años ( M = 14.02, DE = . 846) . Los participantes consideraron que la Voluntad y la Personalidad son las causas más importantes de la obesidad, X 2 (5, 142) = 265.353, p < .001, en...

  20. [Analysis of the impact of Anales Españoles de Pediatría through the Science Citation Index from 1997-2000].

    Science.gov (United States)

    García Río, F; Mayoralas Alises, S; Esparza Paz, P; González Pérez-Yarza, E

    2002-08-01

    To quantify the impact factor of Anales Españoles de Pediatría from 1997 until 2000 and to identify the journal's citation patterns and the topics with the greatest impact. SCISEARCH was used to locate citations of articles published in Anales Españoles de Pediatría between 1995 and 1999. The following data were collected for each article: year of publication, authors, journal, country of publication, language, specialty or specialties, institution(s), residence of the first author and topic. The impact factor was calculated as the ratio between citations received over 1 year by articles published in Anales Españoles de Pediatría in the two previous years and the total number of articles published by Anales Españoles de Pediatría over the 2 years under study. The impact factor of Anales Españoles de Pediatría was 0.052 in 1997, 0.080 in 1998, 0.101 in 1999, 0.089 in 2000 and 0.064 in 2001. Citations were found in a wide range of source journals. The greatest proportion (35.6 %) were found in Spanish medical journals. Citations were made mainly by Spanish authors (62.8 %) and self-citation was moderate (14.3 %). Topics related to neurology (16.9 % of the citations received), infectious diseases (16.2 %) and neonatology (14.8 %) had the greatest impact. The impact factor of Anales Españoles de Pediatria is modest, although higher than that of some other biomedical publications included in Journal Citation Reports.

  1. UČENJE NA PROSTEM NA PRIMERU UČNE POTI OB RIBNIKU VRBJE V PETEM RAZREDU OSNOVNE ŠOLE

    OpenAIRE

    2010-01-01

    Namen diplomske naloge Učenje na prostem na primeru učne poti ob ribniku Vrbje v petem razredu osnovne šole je predstaviti pomen neposrednega izkustvenega učenja in raziskovanja domače pokrajine za učence v petem razredu devetletne osnovne šole na primeru konkretne geografske učne poti. Analizirali smo učni načrt Družba ter Naravoslovje in tehnika s pomočjo deskriptivne metode in izbrali ter oblikovali učne cilje za vzpodbujanje izkustvenega učenja na osnovi terenskega dela. Na podlagi ...

  2. Los Reits españoles como vehículo democratizador de la inversión inmobiliaria: Las Socimi

    OpenAIRE

    Roig Hernando, Jaume; Soriano Llobera, Juan Manuel

    2015-01-01

    La regulación de los REITs españoles denominados Sociedades Anónimas Cotizadas de Inversión en el Mercado Inmobiliario (SOCIMI) acerca el sistema financiero e inmobiliario a la sociedad, especialmente a los pequeños inversores, al incrementar el número de personas que pueden beneficiarse de las ventajas que ofrecen las propiedades inmobiliarias como producto de inversión. Teniendo en cuenta que las propiedades inmobiliarias corresponden a la principal solvencia de los hogares españoles y ...

  3. Avances en el estudio de la personalidad de abusadores sexuales infantiles españoles: una aproximación desd el modelo de los cinco factores

    OpenAIRE

    Becerra-García, Juan-Antonio

    2012-01-01

    El objetivo principal de esta Tesis fue examinar los dominios de personalidad del Modelo de los Cinco Factores (MCF) en abusadores sexuales de menores españoles. Los resultados obtenidos muestran que: los abusadores sexuales de menores españoles presentan mayor nivel de Neuroticismo y menor nivel de Extraversión que la población general. La historia de abusos en la infancia se relaciona más que el tipo de delito con las dimensiones del MCF. La cultura parece influir de manera importante en lo...

  4. Validación del cuestionario de conciencia emocional en adolescentesespañoles

    Directory of Open Access Journals (Sweden)

    Paula Samper-García

    2016-01-01

    Full Text Available La regulación de la emoción es un proceso complejo que implica la iniciación, inhibición o modulación del propio estado o comportamiento en una situación dada (Cole, Michel & Teti, 1994. La regulación emocional tiene una función altamente significativa en la vida humana ya que reacciones emocionales inapropiadas, extremas o incontroladas pueden impedir un ajuste funcional a la sociedad (Koole, 2009. Sin embargo para una adecuada regulación emocional es necesaria una buena comprensión emocional y, a su vez, para una comprensión eficaz se requiere una apro piada percepción emocional. En este estudio se analizan las propiedades psicométricas de la ver sión española del Cuestionario de Conciencia Emocional revisado ( Emotional Awareness Ques tionnaire , EAQ30 desarrollado por Rieffe, Oos terveld, Miers, Terwogt y Ly (2008. La versión española del EAQ30 fue administrada a 1.316 adolescentes españoles de 14 a 16 años. Los da tos confirman la estructura original de la escala de seis factores: Distinción de las emociones, Inter cambio verbal de las emociones, No ocultamiento de las emociones, Conciencia corporal, Análisis de las emociones y Atención a las emociones de los otros. Los coeficientes de consistencia interna de las subescalas del EAQ30 fueron satisfactorios y equivalentes a los obtenidos en la escala origi nal. Por otra parte, el estudio también confirmó la invariancia de la estructura factorial del instru mento cuando se considera el sexo, en la adoles cencia media. Estos resultados permitirían soste ner que la adaptación al español aquí presentada puede ser utilizada para evaluar el constructo conciencia emocional en adolescentes de lengua española de un modo válido y confiable en ambos sexos.

  5. Factores determinantes de la motivación en atletas veteranos españoles

    Directory of Open Access Journals (Sweden)

    Antonio Zarauz-Sancho

    2015-01-01

    Full Text Available El objetivo del presente estudio es conocer motivaciones, ansiedad precompetitiva, adicción al entrenamiento y competición, satisfacción intrínseca, percepción y creencias sobre las causas del éxito en su deporte en una muestra de 401 atletas de pista veteranos (mayores de 35 años españoles. También, obtener unos modelos predictivos suficientemente sólidos, por sexo, de sus motivaciones atendiendo a estas variables psicológicas. Se partió de la hipótesis de que la motivación intrínseca se podría predecir por valorar alto el placer y la relajación, la orientación hacia la tarea, la diversión y el esfuerzo, así como por una baja valoración en el empleo de técnicas de engaño. La motivación extrínseca se podría predecir por una valoración alta en carencia de control, orientación hacia el ego, diversión y empleo de técnicas de engaño, así como por una baja valoración en la orientación hacia la tarea. La amotivación por valorar alto la ansiedad cognitiva, carencia de control, aburrimiento y empleo de técnicas de engaño, así como por valorar bajo la diversión. Los resultados confirmaron que la motivación más alta es la intrínseca, sobre todo en mujeres. En ambos sexos, la percepción de éxito en el deporte por la tarea fue similar a la dada por el ego; les resultó muy satisfactorio obtener medallas y, mejor aún, récords en su categoría de edad mediante el esfuerzo que implica el dominio de su especialidad, y el uso de técnicas de engaño fue poco importante. Por último, se obtuvieron unos modelos predictores de las motivaciones que concuerdan en gran medida con las hipótesis y referencias.

  6. [Anales Españoles de Pediatría 2001. Bibliometric indicators of scientific quality].

    Science.gov (United States)

    González de Dios, J

    2002-08-01

    BACKGROUND. One important objective of Anales Españoles de Pediatría (An Esp Pediatr) is to be included in Journal Citation Reports-Science Citation Index and the main step to achieve this is to increase the scientific quality of this Spanish journal. Bibliometric indicators are important tools used to determine the quality of scientific publications. A bibliometric study of all the original articles published in An Esp Pediatr in 2001 (n 76) was performed; bibliometric indicators were classified into quantitative and qualitative (statistical analyses and level of scientific evidence). The results were compared with the original articles published in the journal from 1994 to June 2000 (n 733) and with the original articles published in Pediatrics in 2001 (n 276). The differences found in An Esp Pediatr between the two study periods were the following in 2001: greater collaboration between epidemiologists and/or biostatisticians in the authorship of articles (19.7 %), increased complexity of statistical analyses (statistical accessibility > 7 in 25 %) and greater use of evidence-based methodological concepts (19.7 %). However, no improvement was found in the scientific evidence (evidence was good in only 1.4 % and average in 25.7 %). Other aspects of interest were a lower number of original articles (due to an increase in other types of articles, such as Letters to the Editor or Special Articles) and a greater percentage of articles on evidence-based medicine or articles using its methodology. The differences in bibliometric indicators of quality found between An Esp Pediatr and Pediatrics continued to be considerable: statistical accessibility, evidence-based methodological concepts and scientific evidence (for example, good evidence was 22 times more frequent in Pediatrics). The scientific quality of An Esp Pediatr improved in 2001 compared with that of previous years, but the differences found between this journal and the gold standard of Pediatrics are still

  7. Meteoritos españoles del Museo Nacional de Ciencias Naturales

    Directory of Open Access Journals (Sweden)

    Tormo, L.

    2006-12-01

    Full Text Available Aims of this work are to collect relevant historical data on Spanish meteorites together with the recent data provided by novelties which are being generated from the important meteorite fall of Villalbeto (Palencia at 2004, January, 4th.. Here are also included new observations performed by ESEM (Environmental Scanning Electron Microscopy in the Spanish Museo Nacional de Ciencias Naturales of Madrid (MNCN, new private information and new field observations together with original pictures of the Villalbeto fragments. The impressive fireball of January 4, 2004 was an important geological phenomenon escorted by audible booms, colour, a persistent path of 30 minutes and a production of more than 32 known fragments. The initial entrance magnitude mass was independently determined by photometric, seismic, infrasound and radioisotopes data matching on 750 kg, size less than 1 m of diameter, and 60 000 km/h in the entrance time. A massive fragmentation occurred at a height of 28 km produced a meteorite strewn field of 20x6 km in the northern of Palencia.El objetivo de este estudio es recopilar los datos históricos conocidos más relevantes sobre meteoritos españoles incorporando las novedades que está generando el importante meteorito de Villalbeto (Palencia, 4 de enero de 2004, incluyendo análisis originales en el microscopio electrónico ambiental de barrido (ESEM realizados en el Museo Nacional de Ciencias Naturales (MNCN, nuevos testimonios humanos y nuevas observaciones de campo, con algunas fotografías inéditas del meteorito. El superbólido del 4 de enero de 2004 fue un fenómeno geológico de importancia trascendental, estuvo acompañado de sonidos, una estela persistente de 30 minutos y más de 32 fragmentos documentados. La masa entrante se pudo determinar independientemente por su luminosidad, por detección sísmica, por detección infrasónica y por radioisótopos, coincidiendo todos los métodos en unos 750 kilogramos y menos de un

  8. Motivación de logro y lenguaje escrito en adolescentes españoles

    Directory of Open Access Journals (Sweden)

    María-José González-Valenzuela

    Full Text Available La mayoría de los estudios sobre lectura y escritura analizan su relación con factores cognitivos-lingüísticos, siendo menos frecuentes los relacionados con la motivación. Este estudio analiza la relación de la motivación de logro con la composición escrita y la comprensión lectora en adolescentes españoles. La muestra esta formada por 203 sujetos de 1º (ME=12.4, DT=1.28, 2º (ME=13.6, DT=1.02 y 3º (ME=14.2, DT=1.34 de Educación Secundaria Obligatoria, de clase sociocultural media, con niveles intelectuales normales y sin déficits físicos, psíquicos o sensoriales. Se evalúa la motivación de logro en función de la frecuencia de pensamientos relacionados con la realización de las tareas académicas. La composición escrita fue evaluada en términos de progresión temática, conocimiento semántico, morfosintáctico y metacognición. La comprensión lectora se evaluó en términos de selección y organización de ideas, conocimiento semántico, morfosintáctico y metacognición. El diseño es transversal y se realiza análisis de regresión lineal. Los resultados obtenidos indican que la motivación de logro explica un 17% de la composición escrita y entre un 16 y 27% de la comprensión lectora, según el curso. Se destaca la relación de la motivación de logro con el lenguaje escrito y su posible repercusión en los problemas de composición escrita y comprensión lectora en la adolescencia.

  9. Effect of Substituents on the Electronic Structure and Degradation Process in Carbazole Derivatives for Blue OLED Host Materials

    KAUST Repository

    Hong, Minki

    2016-07-25

    We investigate the dissociation mechanism of the C-N bond between carbazole and dibenzothiophene in carbazole-dibenzothiophene (Cz-DBT) positional isomers, selected as representative systems for blue host materials in organic light-emitting diodes (OLEDs). The C-N bond dissociation energies, calculated at the density functional theory level, are found to depend strongly on the charge states of the parental molecules. In particular, the anionic C-N bond dissociations resulting in a carbazole anion can have low dissociation energies (∼1.6 eV) with respect to blue emission energy. These low values are attributed to the large electron affinity of the carbazole radical, a feature that importantly can be modulated via substitution. Substitution also impacts the energies of the first excited electronic states of the Cz-DBT molecules since these states have an intramolecular charge-transfer nature due to the spatially localized character of the frontier molecular orbitals within the carbazole moiety (for the HOMO) and the dibenzothiophene moiety (for the LUMO). The implications of these results must be considered when designing blue OLED hosts since these materials must combine chemical stability and high triplet energy. © 2016 American Chemical Society.

  10. Revisión de las características y usos De la planta Moringa oleífera

    Directory of Open Access Journals (Sweden)

    Alejandro Villarreal Gómez

    2014-07-01

    Full Text Available En este artículo se presenta el estado de conocimiento de la planta Moringa oleífera y su posible impacto en la solución de problemas de seguridad alimentaria. De la variedad de beneficios que aporta esta especie a la humanidad en materia de usos médicos, químicos y agrícolas, se puede destacar forraje animal, biogás, productos de limpieza doméstica, productos cosméticos y medicinales, purificación del agua, entre otros (Fuglie, 1999. Debido a que sus beneficios potenciales son muchos y tiene bajísimos niveles de sustancias antinutricionales, la Moringa oleífera es un alimento nutritivo y benéfico que ofrece características muy atractivas para establecer su cultivo (Olson & Fahey, 2011; si los estudios demuestran la riqueza nutricional de la planta y su biodisponibilidad de una manera suficiente, se tendría un poderoso recurso natural para combatir la desnutrición infantil y familiar, especialmente en poblaciones vulnerables.

  11. A flexible insulator of a hollow SiO2 sphere and polyimide hybrid for flexible OLEDs.

    Science.gov (United States)

    Kim, Min Kyu; Kim, Dong Won; Shin, Dong Wook; Seo, Sang Joon; Chung, Ho Kyoon; Yoo, Ji Beom

    2015-01-28

    The fabrication of interlayer dielectrics (ILDs) in flexible organic light-emitting diodes (OLEDs) not only requires flexible materials with a low dielectric constant, but also ones that possess the electrical, thermal, chemical, and mechanical properties required for optimal device performance. Porous polymer-silica hybrid materials were prepared to satisfy these requirements. Hollow SiO2 spheres were synthesized using atomic layer deposition (ALD) and a thermal calcination process. The hybrid film, which consists of hollow SiO2 spheres and polyimide, shows a low dielectric constant of 1.98 and excellent thermal stability up to 500 °C. After the bending test for 50 000 cycles, the porous hybrid film exhibits no degradation in its dielectric constant or leakage current. These results indicate that the hybrid film made up of hollow SiO2 spheres and polyimide (PI) is useful as a flexible insulator with a low dielectric constant and high thermal stability for flexible OLEDs.

  12. Optimal scan strategy for mega-pixel and kilo-gray-level OLED-on-silicon microdisplay.

    Science.gov (United States)

    Ji, Yuan; Ran, Feng; Ji, Weigui; Xu, Meihua; Chen, Zhangjing; Jiang, Yuxi; Shen, Weixin

    2012-06-10

    The digital pixel driving scheme makes the organic light-emitting diode (OLED) microdisplays more immune to the pixel luminance variations and simplifies the circuit architecture and design flow compared to the analog pixel driving scheme. Additionally, it is easily applied in full digital systems. However, the data bottleneck becomes a notable problem as the number of pixels and gray levels grow dramatically. This paper will discuss the digital driving ability to achieve kilogray-levels for megapixel displays. The optimal scan strategy is proposed for creating ultra high gray levels and increasing light efficiency and contrast ratio. Two correction schemes are discussed to improve the gray level linearity. A 1280×1024×3 OLED-on-silicon microdisplay, with 4096 gray levels, is designed based on the optimal scan strategy. The circuit driver is integrated in the silicon backplane chip in the 0.35 μm 3.3 V-6 V dual voltage one polysilicon layer, four metal layers (1P4M) complementary metal-oxide semiconductor (CMOS) process with custom top metal. The design aspects of the optimal scan controller are also discussed. The test results show the gray level linearity of the correction schemes for the optimal scan strategy is acceptable by the human eye.

  13. Los códices modelo y los manuscritos hebreos bíblicos españoles

    Directory of Open Access Journals (Sweden)

    Ortega Monasterio, Mª Teresa

    2005-12-01

    Full Text Available The importance of Biblical Hebrew manuscripts preserved in Spanish libraries is well known. Some of them, for example, were used in the edition of celebrated Polyglote Bibles, such as the Complutensian or Antwerp Bible. Despite the apparent similarity of the Masorah of most significant Spanish manuscripts, the style and the information they provide show some differences. In the present article I have selected some important Spanish manuscripts, and studied the notes in the Masorah of the Pentateuch referring to the so-called Model Codices.

    La importancia de los manuscritos hebreos bíblicos conservados en bibliotecas españolas es bien conocida. Algunos de ellos, por ejemplo, han sido utilizados en la composición de famosas biblias, tales como la Políglota Complutense o la Biblia Regia. A pesar de la aparente similitud de la masora de los manuscritos españoles más significativos, el estilo y la información que proporcionan muestran algunas diferencias. En este artículo he seleccionado algunos manuscritos españoles relevantes y he analizado las notas que aparecen en las masoras del Pentateuco acerca de estos códices modelo.

  14. Turbocharged molecular discovery of OLED emitters: from high-throughput quantum simulation to highly efficient TADF devices

    Science.gov (United States)

    Gómez-Bombarelli, Rafael; Aguilera-Iparraguirre, Jorge; Hirzel, Timothy D.; Ha, Dong-Gwang; Einzinger, Markus; Wu, Tony; Baldo, Marc A.; Aspuru-Guzik, Alán.

    2016-09-01

    Discovering new OLED emitters requires many experiments to synthesize candidates and test performance in devices. Large scale computer simulation can greatly speed this search process but the problem remains challenging enough that brute force application of massive computing power is not enough to successfully identify novel structures. We report a successful High Throughput Virtual Screening study that leveraged a range of methods to optimize the search process. The generation of candidate structures was constrained to contain combinatorial explosion. Simulations were tuned to the specific problem and calibrated with experimental results. Experimentalists and theorists actively collaborated such that experimental feedback was regularly utilized to update and shape the computational search. Supervised machine learning methods prioritized candidate structures prior to quantum chemistry simulation to prevent wasting compute on likely poor performers. With this combination of techniques, each multiplying the strength of the search, this effort managed to navigate an area of molecular space and identify hundreds of promising OLED candidate structures. An experimentally validated selection of this set shows emitters with external quantum efficiencies as high as 22%.

  15. Synthesis Al complex and investigating effect of doped ZnO nanoparticles in the electrical and optical efficiency of OLEDS

    Science.gov (United States)

    Shahedi, Zahra; Jafari, Mohammad Reza

    2017-01-01

    In this study, an organometallic complex based on aluminum ions is synthesized. And it is utilized as fluorescent material in the organic light-emitting diodes (OLEDs). The synthesized complex was characterized using XRD, UV-Vis, FT-IR as well as PL spectroscopy analyses. The energy levels of Al complex were determined by cyclic voltammetry measurements. Then, the effects of ZnO nanoparticles (NPs) of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate), PEDOT:PSS, on the electrical and optical performance of the organic light-emitting diodes have been investigated. For this purpose, two samples containing ITO/PEDOT:PSS/PVK/Alq3/PBD/Al with two different concentration and two samples containing ITO/PEDOT:PSS:ZnO/PVK/Alq3/PBD/Al with two different concentration were prepared. Then, hole transport, electron transport and emissive layers were deposited by the spin coating method and the cathode layer (Al) was deposited by the thermal evaporation method. The OLED simulation was also done by constructing the model and choosing appropriate parameters. Then, the experimental data were collected and the results interpreted both qualitatively and quantitatively. The results of the simulations were compared with experimental data of the J-V spectra. Comparing experimental data and simulation results showed that the electrical and optical efficiency of the samples with ZnO NPs is appreciably higher than the samples without ZnO NPs.

  16. Light emission in forward and reverse bias operation in OLED with amorphous silicon carbon nitride thin films

    Energy Technology Data Exchange (ETDEWEB)

    Reyes, R [Facultad de Ingenieria Quimica y Textil, Universidad Nacional de Ingenieria, Av. Tupac Amaru SN, Lima (Peru); Cremona, M [Departamento de Fisica, PontifIcia Universidade Catolica de Rio de Janeiro, PUC-Rio, Cx. Postal 38071, Rio de Janeiro, RJ, CEP 22453-970 (Brazil); Achete, C A, E-mail: rreyes@uni.edu.pe [Departamento de Engenheria Metalurgica e de Materiais, Universidade Federal do Rio de Janeiro, Cx. Postal 68505, Rio de Janeiro, RJ, CEP 21945-970 (Brazil)

    2011-01-01

    Amorphous silicon carbon nitride (a-SiC:N) thin films deposited by magnetron sputtering were used in the structure of an organic light emitting diode (OLED), obtaining an OLED operating in forward and reverse bias mode. The device consist of the heterojunction structure ITO/a-SiC:N/Hole Transport Layer (HTL)/ Electron Transport Layer (ETL)/a-SiC:N/Al. As hole transporting layer was used a thin film of 1-(3-methylphenyl)-1,2,3,4 tetrahydroquinoline - 6 - carboxyaldehyde - 1,1'- diphenylhydrazone (MTCD), while the tris(8-hydroxyquinoline aluminum) (Alq{sub 3}) is used as electron transport and emitting layer. A significant increase in the voltage operation compared to the conventional ITO/MTCD/Alq{sub 3}/Al structure was observed, so the onset of electroluminescence occurs at about 22 V in the forward and reverse bias mode of operation. The electroluminescence spectra is similar in both cases, only slightly shifted 0.14 eV to lower energies in relation to the conventional device.

  17. Novel Hole Transporting Materials Based on 4-(9H-Carbazol-9-yltriphenylamine Derivatives for OLEDs

    Directory of Open Access Journals (Sweden)

    Quynh Pham Bao Nguyen

    2014-09-01

    Full Text Available During the past few years, organic light emitting diodes (OLEDs have been increasingly studied due to their emerging applicability. However, some of the properties of existing OLEDs could be improved, such as their overall efficiency and durability; these aspects have been addressed in the current study. A series of novel hole-transporting materials (HTMs 3a–c based on 4-(9H-carbazol-9-yltriphenylamine conjugated with different carbazole or triphenylamine derivatives have been readily synthesized by Suzuki coupling reactions. The resulting compounds showed good thermal stabilities with high glass transition temperatures between 148 and 165 °C. The introduction of HTMs 3b and 3c into the standard devices ITO/HATCN/NPB/HTMs 3 (indium tin oxide/dipyrazino(2,3-f:2ꞌ,3ꞌ-hquinoxaline 2,3,6,7,10,11-hexacarbonitrile/N,Nꞌ-bis(naphthalen-1-yl-N,Nꞌ-bis(phenyl-benzidine/HTMs/CBP (4,4ꞌ-Bis(N-carbazolyl-1,1ꞌ-biphenyl: 5% Ir(ppy3/Bphen/LiF/Al (tris[2-phenylpyridinato-C2,N]iridium(III/4,7-diphenyl-1,10-phenanthroline/LiF/Al resulted in significantly enhanced current, power, and external quantum efficiencies (EQE as compared to the reference device without any layers of HTMs 3.

  18. Red phosphorescent organic light-emitting diodes (PhOLEDs) based on a heteroleptic cyclometalated Iridium (III) complex

    Energy Technology Data Exchange (ETDEWEB)

    Lepeltier, Marc [Institut Lavoisier de Versailles, UMR 8180 CNRS, Université de Versailles Saint-Quentin en Yvelines, 45 avenue des Etats-Unis, 78035 Versailles Cedex (France); Dumur, Frédéric, E-mail: frederic.dumur@univ-amu.fr [Aix-Marseille Université, CNRS, ICR, UMR 7273, F-13397 Marseille (France); Wantz, Guillaume, E-mail: guillaume.wantz@ims-bordeaux.fr [University of Bordeaux, IMS, UMR 5218, F-33400 Talence (France); CNRS, IMS, UMR 5218, F-33400 Talence (France); Vila, Neus; Mbomekallé, Israel [Institut Lavoisier de Versailles, UMR 8180 CNRS, Université de Versailles Saint-Quentin en Yvelines, 45 avenue des Etats-Unis, 78035 Versailles Cedex (France); Bertin, Denis; Gigmes, Didier [Aix-Marseille Université, CNRS, ICR, UMR 7273, F-13397 Marseille (France); Mayer, Cédric R., E-mail: cmayer@lisv.uvsq.fr [Laboratoire d’Ingénierie des Systèmes de Versailles LISV – EA 4048, Université de Versailles Saint Quentin en Yvelines, 10/12 avenue de l’Europe, 78140 Vélizy (France)

    2013-11-15

    Highly efficient red-emitting Phosphorescent Organic Light-Emitting Diodes (PhOLEDs) based on a neutral vacuum-sublimatable heteroleptic iridium (III) complex have been designed and studied. Heteroleptic complex Ir(piq){sub 2}(acac) was prepared in one step with acetylacetone (acac) as the ancillary ligand. Electronic and spectroscopic properties of Ir(piq){sub 2}(acac) were investigated by UV–visible absorption, fluorescence spectroscopy and cyclic voltammetry. Electrophosphorescent devices comprising Ir(piq){sub 2}(acac) as dopant of TCTA exhibited outstanding electroluminescence performance with a current efficiency of 10.0 cd A{sup −1}, a maximum power efficiency of 7.2 lm W{sup −1} and a maximal brightness of 3540 cd m{sup −2} was reached at 8.0 V. CIE coordinates close to the standard red of the national television system committee were obtained (0.67, 0.33). -- Highlights: • A saturated red OLED has been prepared. • High power efficiency and brightness were obtained. • Thickness of the device was determined as a parameter determining the overall performance. • CIE coordinates close to the standard red of the national television system committee were obtained.

  19. Trabajadores y empresarios españoles en el estado de Puebla en 1930: Una aproximación cuantitativa

    Directory of Open Access Journals (Sweden)

    Javier Moreno Lázaro

    2011-12-01

    Full Text Available En este trabajo sostenemos la tesis de que, en contra de lo escrito hasta la fecha, el grueso de los emigrados españoles a México trabajó como asalariado y no alcanzó el éxito empresarial. Para demostrarlo, hemos empleado el censo de españoles elaborado por el Consulado español en Puebla. Pero, al mismo tiempo, determinamos las razones del mayor éxito empresarial de la minoría española que el de la mayoría mexicana, sustentado en la fortaleza de sus instituciones no formales, los lazos de solidaridad, la política matrimonial y la cultura empresarial de origen, al margen del valor intangible de enorme importancia que representaba el idioma común.Contrary to what has been written so far, in this paper we present the argument that the bulk of Spanish emigrants to Mexico worked as employees and were not successful in business. To demonstrate this we have used the Spanish census prepared by the Spanish Consulate in Puebla. However, at the same time, we have also determined the reasons for the greater business success of the Spanish minority over the Mexican majority, based on the strength of their non-formal institutions, bonds of solidarity, marriage policy and corporate culture of origin, without mentioning the tremendously important intangible value that the common language represented.

  20. Pure white OLED based on an organic small molecule: 2,6-Di(1H-benzo[d]imidazol-2-yl)pyridine

    Science.gov (United States)

    Liu, Jian

    2015-10-01

    2,6-Di(1H-benzo[d]imidazol-2-yl)pyridine (DBIP) was synthesized. The single-crystal structure of DBIP was resolved. DBIP-based OLED was fabricated. The electroluminescence for the device corresponds to a pure white emission. In addition, thermal stability, UV-vis, photoluminescence and electrochemical behaviors of DBIP were investigated as well.

  1. The Important Considerations in Management of Cleanroom for OLED Trial Production Line%OLED实验线洁净室工程管理要点

    Institute of Scientific and Technical Information of China (English)

    杜丽军; 李国钰

    2012-01-01

    说明为保证OLED的洁净生产环境所采取的各种措施及良好效果。%The measurements implemented to ensure the clean environment for an OLED Production line and their results were described.

  2. Cathode encapsulation of OLEDs by atomic layer deposited Al2O3 films and Al2O3/a-SiNx:H stacks

    NARCIS (Netherlands)

    Keuning, W.; Van de Weijer, P.; Lifka, H.; Kessels, W.M.M.; Creatore, M.

    2011-01-01

    Al2O3 thin films synthesized by plasma-enhanced atomic layer deposition(ALD) at room temperature (25 ºC) have been tested as water vapor per-meation barriers for OLED devices. Silicon nitride films (a-SiNx:H)deposited by plasma-enhanced chemical vapor deposition (PE-CVD) servedas reference and were

  3. Estado de ánimo y consumo de tabaco en una muestra de adolescentes españoles

    Directory of Open Access Journals (Sweden)

    María T. Gonzálvez

    2015-01-01

    Full Text Available El tabaco es la segunda droga más consumida entre los escolares españoles. Existen evi - dencias sobre la relación entre estado de ánimo y tabaquismo, aunque los resultados no son concluyentes y se desconoce el grado en que esta variable predice el consumo de adolescentes españoles. El objetivo de este estudio es comparar el estado de ánimo en - tre adolescentes fumadores y no fumadores, y comprobar si los fumadores presentan mayor intensidad de consumo con peor estado anímico. Se reclutó una muestra de 1507 adolescentes españoles (edad, M = 15.28; DT = 1.20. Se evaluaron variables sociodemo - gráficas, estado de ánimo mediante la versión breve del 20-item Center for Epidemiolo - gic Studies Depression Scale (CED-D, y la conducta de consumo de tabaco alguna vez y durante el último mes y frecuencia mediante un autoinforme. Los adolescentes fumado - res presentan peor estado de ánimo que los no fumadores. Es más probable ser fumador en presencia de bajo estado de ánimo ( B = 1.17; p < .001. Los fumadores (n = 487 fueron clasificados en función del estado de ánimo. Los adolescentes con bajo estado de ánimo hacen mayor consumo diario de cigarrillos. Los fumadores con mejor estado de ánimo tenían una pauta de consumo de menor intensidad. Se aportan nuevas evidencias sobre el papel del estado de ánimo depresivo de los adolescentes como factor de riesgo de iniciar consumo de tabaco, y se comprueba su relación con mayor intensidad de consu - mo. Las intervenciones preventivas con adolescentes deben atender a los factores emo - cionales relacionados con el consumo. © 2015, Fundación Universitaria Konrad Lorenz. Publicado por Elsevier España, S.L.U. Este es un artículo de acceso abierto distribuido bajo los términos de la Licencia Creative Commons CC BY-NC-ND (http://creativecommons.org/licenses/by-nc-nd/4.0/.

  4. LED and OLED Devices Compare in Lighting Application and Industry Development%照明应用中LED和OLED的比较及产业发展分析

    Institute of Scientific and Technical Information of China (English)

    张天翼; 顾磊

    2013-01-01

    The fourth generation lighting-semiconductor lighting ( light emitting diode , LED) and the fifth generation lighting-organic lighting ( organic light emitting diode , OLED ) technologies have both entered the era of industrialization and commercial production .This paper reviewed the history of LED and OLED development , especially the evolution of their application in lighting industries .The authors conducted computer simulation analysis on OLED lighting panels from a leading manufacturing company and compared the resulted lighting effects with that of a sample LED lamp .On the other hand , cost to produce OLED panels as well as the LED lamp was also discussed .In the end of this paper , based on these cost and effectiveness analysis and the current industry development status , the authors provided perspectives on outlook of the LED and OLED lighting industry and gave future development proposals aiming to benefit all the related parties in the advanced lighting industry .%本文回顾LED和OLED的发展史,尤其是两者在照明领域的应用进程。通过计算机模拟的方法选取国际知名厂商生产的OLED照明面板与LED灯具进行照明效果比较,同时对两者的成本进行了讨论。在成本分析的基础上,对LED和OLED照明市场发展进行了预测,并结合产业发展现状给出发展建议。

  5. Retos para alcanzar la excelencia en comunicación corporativa en los clubs deportivos profesionales españoles

    Directory of Open Access Journals (Sweden)

    Guillermo SANAHUJA PERIS

    2013-03-01

    Full Text Available La presente investigación trata de presentar los principales retos que deben afrontar los clubes deportivos profesionales españoles para alcanzar la excelencia –entendida como el reconocimiento positivo por parte de los distintos públicos y grupos de interés. La metodología empleada es una combinación de técnicas cuantitativas y cualitativas ante un universo de estudio formado por las 56 entidades deportivas que forman la Liga de Fútbol Profesional (LFP y la Asociación de Clubes de Baloncesto (ACB. Como resultado se señalan cinco palancas de cambio orientadas hacia ese horizonte de actuación excelente.

  6. High output efficiency in a one wavelength microcavity OLED with emitter layer positioned at an anti-node

    CERN Document Server

    Nelson, Mitchell C

    2015-01-01

    A novel OLED architecture is described in which a thin emitter layer is located at the anti-node of a resonant microcavity. In two realizations, the mode space is constrained by either multi-layer mirrors or by an emitter with transition dipole moments oriented normal to the vertical mode of the device. The multi-layer mirror device achieves 315 lm/W and shows linear light output versus current with a small offset. The symmetrized emitter device demonstrates a luminous efficiency of 340 lm/W. Rate equation analysis predicts the observed linear behavior with constant loss term for stimulated emission devices. For spontaneous emission devices a coefficient is obtained that is analogous to the out-coupling factor and goes to 1 for high finesse cavities. Both types of devices can approach unit efficiency, the stimulated emission device should be less susceptible to roll-off and may be easier to manufacture.

  7. Volver: el retorno de los capuchinos españoles al norte de Colombia a finales del siglo XIX

    Directory of Open Access Journals (Sweden)

    Bosa Bastien Andre

    2015-07-01

    Full Text Available El artículo describe la compleja secuencia de interacciones y eventos que permitió asegurar la presencia de una misión dirigida por Capuchinos españoles en Colombia a finales del siglo XIX. Reflexiona sobre las condiciones intelectuales que permitieron justificar, en el contexto de la República, el regreso de los mismos misioneros que fueron expulsados durante la Independencia. El autor analiza los diferentes registros de justificación utilizados por los actores involucrados en este proceso. Discute, por otro lado, sobre las condiciones materiales, jurídicas e institucionales que permitieron a los Capuchinos consolidar su posición dentro de la compleja estructura eclesiástica y establecerse como intermediarios indispensables para el Estado colombiano.

  8. Caracterización de aceites de oliva virgen elaborados en zonas oleícolas de Extremadura

    OpenAIRE

    Martínez Cano, Manuel

    2016-01-01

    La Comunidad Autónoma de Extremadura según el Reglamento (CE) nº 2138/97 por el que se delimitan las zonas de producción homogéneas de aceite de oliva en España, está subdividida en 12 comarcas oleícolas; cada una de ellas con diferentes peculiaridades que van a conferir características propias a los aceites de oliva obtenidos en ellas, principalmente a sus componentes de pureza. La presente tesis consta de una serie de artículos científicos en los que se analizan parámetros de pureza (áci...

  9. [Critical review of the bibliographic references of "Archivos Españoles de Urología"].

    Science.gov (United States)

    Blasco Casares, F J; Pinsach Elías, L

    1993-01-01

    Due to the lack of Spanish journals or publications with a rather strong "impact", which is basically determined by the number of times a publication is cited, we attempted to corroborate the widely held view that very little reference is made to the Spanish literature. On analyzing all the articles published in "Archivos Españoles de Urología" during 1990 (182 articles with a total of 3,324 references), we found that only 13.61% of the references were from Spanish journals, books or Congresses held in Spain, which dropped to 10.3% if the books or communications delivered at meetings are excluded. Approximately 30% of the articles did not have a single reference from a Spanish publication. Furthermore, the articles submitted by foreigners rarely included any reference from the Spanish literature. Finally, the Journal of Urology (USA), which accounted for over 20% of the references, was the most cited.

  10. Aarhus Conference on Probability, Statistics and Their Applications : Celebrating the Scientific Achievements of Ole E. Barndorff-Nielsen

    CERN Document Server

    Stelzer, Robert; Thorbjørnsen, Steen; Veraart, Almut

    2016-01-01

    Collecting together twenty-three self-contained articles, this volume presents the current research of a number of renowned scientists in both probability theory and statistics as well as their various applications in economics, finance, the physics of wind-blown sand, queueing systems, risk assessment, turbulence and other areas. The contributions are dedicated to and inspired by the research of Ole E. Barndorff-Nielsen who, since the early 1960s, has been and continues to be a very active and influential researcher working on a wide range of important problems. The topics covered include, but are not limited to, econometrics, exponential families, Lévy processes and infinitely divisible distributions, limit theory, mathematical finance, random matrices, risk assessment, statistical inference for stochastic processes, stochastic analysis and optimal control, time series, and turbulence. The book will be of interest to researchers and graduate students in probability, statistics and their applications. .

  11. OLED Video Processing System Realized by FPGA%FPGA实现的OLED视频处理系统

    Institute of Scientific and Technical Information of China (English)

    马静静; 于军胜; 蒋泉; 熊文彬; 曲建军

    2011-01-01

    Altera' s FPGA (Filed programmable gate array) as the main processing chip, a video processing system based on OLED screen is designed and realized in this paper > which includes three subsystems in terms of video capture, video processing and video display. The system can process the YUV 4 8 2 ? 2 video data stream which is compatible with the ITU656 standard; output a 24-bit parallel RGB format to display on the OLEDCOrganic light emitting diode) screen with a resolution of 480×272. In the system, the high speed storing ability of the video data is realized by the ping-pong cache technology. Each of the functional modules is achieved by Verilog HDL. The whole system has achieved a better visual effect and some practical value.%本文利用Altera公司的FPGA(Filed programmable gate array)作为主处理芯片,设计并实现了基于OLED(Organic light emitting diode)屏的视频处理系统.该系统主要包括视频图像的采集、处理与显示三个部分,能够接收与ITU656标准兼容的YUV4:2:2格式的视频数据,输出24位并行RGB格式的视频图像,实现分辨率为480×272的OLED屏的视频显示.其中,对于视频数据的高速存储是采用的乒乓缓存技术.整个系统用Verilog HDL编写实现系统各功能模块,获得了较好的显示效果.

  12. Actitud emprendedora de los jóvenes españoles en un contexto de crisis

    Directory of Open Access Journals (Sweden)

    Pilar Ortiz García

    2016-01-01

    Full Text Available El emprendimiento ha despertado un gran interés en los últimos años. Éste responde a la necesidad de dinamizar el empleo, especialmente en economías como la española, con altos niveles de desempleo en un período de crisis que va desde 2007 hasta la actualidad. Por esta razón, resulta de especial relevancia analizar la actitud de los jóvenes españoles ante el emprendimiento empresarial, objetivo de este artículo. El estudio utiliza una metodología cuantitativa para analizar los microdatos de la encuesta de ámbito nacional del Centro de Investigaciones Sociológicas: “Actitudes de la juventud española ante el emprendimiento”, realizada mediante entrevista personal en domicilio a una muestra de 1.437 jóvenes, del universo poblacional compuesto por personas de ambos sexos entre 15 y 29 años en España. La Teoría del Capital Social – colectivo e individual- sirve como marco para un análisis cuyos resultados evidencian que los jóvenes españoles poseen unos “capitales” débiles, lo que marca una actitud reacia al emprendimiento. La conclusión es que la socialización de los jóvenes en un mercado de trabajo marcado por la inestabilidad en el empleo, debilita los capitales sociales que inducen al emprendimiento y la asunción de riesgos y, por el contrario, promueve una actitud conservadora en el trabajo.

  13. Immunoproteomic tools are used to identify masked allergens: Ole e 12, an allergenic isoflavone reductase from olive (Olea europaea) pollen.

    Science.gov (United States)

    Castro, Lourdes; Crespo, Jesús F; Rodríguez, Julia; Rodríguez, Rosalía; Villalba, Mayte

    2015-12-01

    Proteins performing important biochemical activities in the olive tree (Olea europaea) pollen have been identified as allergens. One novel 37-kDa protein seems to be associated to the IgE-binding profile of a group of patients suffering allergy to peach and olive pollen. Three previously described olive pollen allergens exhibit very similar molecular mass. Our objective was to identify this allergen by using immunoproteomic approaches. After 2D-electrophoresis and mass spectrometry, peptide sequences from several IgE-binding spots, allowed identifying this new allergen, as well as cloning and DNA sequencing of the corresponding gene. The allergen, named Ole e 12, is a polymorphic isoflavone reductase-like protein of 308 amino acids showing 80% and 74% identity with birch and pear allergens, Bet v 6 and Pyr c 5, respectively. A prevalence of 33% in the selected population is in contrast to 4%-10% in groups of subjects suffering from pollinosis. Recombinant allergen was produced in Escherichia coli, and deeply characterised. Immunoblotting and ELISA detection as well as inhibition experiments were performed with polyclonal antisera and allergic patients' sera. The recombinant allergen retains the IgE reactivity of its natural counterpart. Close structural and immunological relationships between members of this protein family were supported by their IgG recognition in vegetable species. In summary, Ole e 12 is a minor olive pollen allergen, which gains relevance in patients allergic to peach with olive pollinosis. Proteomic approaches used to analyse this allergen provide useful tools to identify hidden allergens, relevant for several allergic populations and thus complete allergenic panels.

  14. La migración laboral Marroqui y los territorios españoles de Ceuta y Melilla

    Directory of Open Access Journals (Sweden)

    White, Gregory

    2003-12-01

    Full Text Available The Spanish enclaves of Ceuta y Melilla in Northern Morocco play central roles in the politics of trans-Mediterranean migration. They are crucial to the Northern Moroccan economy because of the movement of people and goods through the duty free-zones. In addition, Ceuta and Melilla are at the heart of a heated diplomatic dispute between Spain and Morocco, with Rabat challenging Spain's riht to claim the territories as sovereing territory. However, each enclave's sovereignty is reinforce, not undermined, by the labour migration system within witch they exist. As such, despite Rabat's occasional grumbling and dissatisfaction, the territories will likely remain Spanish. Morocco, for its part, will have the benefit of a useful bargaining card in negotiations with Spain and the EU.

    Los enclaves españoles de Ceuta y Melilla desempeñan un papel central en la política de migración transmediterránea. Asimismo, resultan cruciales para la economía del norte de Marruecos debido al movimiento de personas y bienes que se produce hacia aquellas zonas libres de impuestos. Además, Ceuta y Melilia se encuentran en el centro de una enconada disputa diplomática entre España y Marruecos, en la que Rabat cuestiona la soberanía de España sobre dichos territorios. Sin embargo, la soberanía de cada uno de los enclaves se ha visto reforzada, no socavada, por el sistema de migración laboral en el que se hallan inmersos. Pese a las quejas y a la insatisfacción de las que, en ocasiones, Rabat da muestras, lo más probable es que esos territorios sigan siendo españoles. Por su parte, Marruecos se beneficiará de esa carta en sus negociaciones con España y la UE.

  15. Assessment of the Olea pollen and its major allergen Ole e 1 concentrations in the bioearosol of two biogeographical areas

    Science.gov (United States)

    Moreno-Grau, S.; Aira, M. J.; Elvira-Rendueles, B.; Fernández-González, M.; Fernández-González, D.; García-Sánchez, A.; Martínez-García, M. J.; Moreno, J. M.; Negral, L.; Vara, A.; Rodríguez-Rajo, F. J.

    2016-11-01

    The Olea pollen is currently an important allergy source. In some regions of Southern Spain, olive pollen is the main cause of allergic sensitization exceeding 40% of the sensitized individuals. Due to the scarce presence of olive trees in Northern Spain, limited to some cultivated fields in the South of the Galicia region where they also grow wild, only 8% of the sensitized individuals showed positive results for Olea pollen. The aim of the paper was to assess the behaviour pattern of the Olea pollen and its aeroallergens in the atmosphere, as this information could help us to improve the understanding and prevention of clinical symptoms. Airborne Olea pollen and Ole e 1 allergens were quantified in Cartagena (South-eastern Spain) and Ourense (North-western Spain). A volumetric pollen trap and a Burkard Cyclone sampler were used for pollen and allergen quantification. The Olea flowering took place in April or May in both biometeorological sampling areas. The higher concentrations were registered in the Southern area of Spain, for both pollen and Ole e 1, with values 8 times higher for pollen concentrations and 40 times higher for allergens. An alternate bearing pattern could be observed, characterized by years with high pollen values and low allergen concentrations and vice versa. Moreover, during some flowering seasons the allergen concentrations did not correspond to the atmospheric pollen values. Variations in weather conditions or Long Distance Transport (LDT) processes could explain the discordance. The back trajectory analysis shows that the most important contributions of pollen and allergens in the atmosphere are coincident with air masses passing through potential source areas. The exposure to olive pollen may not be synonym of antigen exposure.

  16. Crystal Structures of Xanthomonas campestris OleA Reveal Features That Promote Head-to-Head Condensation of Two Long-Chain Fatty Acids

    Energy Technology Data Exchange (ETDEWEB)

    Goblirsch, Brandon R.; Frias, Janice A.; Wackett, Lawrence P.; Wilmot, Carrie M. (UMM)

    2012-10-25

    OleA is a thiolase superfamily enzyme that has been shown to catalyze the condensation of two long-chain fatty acyl-coenzyme A (CoA) substrates. The enzyme is part of a larger gene cluster responsible for generating long-chain olefin products, a potential biofuel precursor. In thiolase superfamily enzymes, catalysis is achieved via a ping-pong mechanism. The first substrate forms a covalent intermediate with an active site cysteine that is followed by reaction with the second substrate. For OleA, this conjugation proceeds by a nondecarboxylative Claisen condensation. The OleA from Xanthomonas campestris has been crystallized and its structure determined, along with inhibitor-bound and xenon-derivatized structures, to improve our understanding of substrate positioning in the context of enzyme turnover. OleA is the first characterized thiolase superfamily member that has two long-chain alkyl substrates that need to be bound simultaneously and therefore uniquely requires an additional alkyl binding channel. The location of the fatty acid biosynthesis inhibitor, cerulenin, that possesses an alkyl chain length in the range of known OleA substrates, in conjunction with a single xenon binding site, leads to the putative assignment of this novel alkyl binding channel. Structural overlays between the OleA homologues, 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) synthase and the fatty acid biosynthesis enzyme FabH, allow assignment of the two remaining channels: one for the thioester-containing pantetheinate arm and the second for the alkyl group of one substrate. A short {beta}-hairpin region is ordered in only one of the crystal forms, and that may suggest open and closed states relevant for substrate binding. Cys143 is the conserved catalytic cysteine within the superfamily, and the site of alkylation by cerulenin. The alkylated structure suggests that a glutamic acid residue (Glu117{beta}) likely promotes Claisen condensation by acting as the catalytic base. Unexpectedly

  17. Crystal Structures of Xanthomonas campestris OleA Reveal Features That Promote Head-to-Head Condensation of Two Long-Chain Fatty Acids

    Energy Technology Data Exchange (ETDEWEB)

    Goblirsch, BR; Frias, JA; Wackett, LP; Wilmot, CM

    2012-05-22

    OleA is a thiolase superfamily enzyme that has been shown to catalyze the condensation of two long-chain fatty acylcoenzyme A (CoA) substrates. The enzyme is part of a larger gene cluster responsible for generating long-chain olefin products, a potential biofuel precursor. In thiolase superfamily enzymes, catalysis is achieved via a ping-pong mechanism. The first substrate forms a covalent intermediate with an active site cysteine that is followed by reaction with the second substrate. For OleA, this conjugation proceeds by a nondecarboxylative Claisen condensation. The OleA from Xanthomonas campestris has been crystallized and its structure determined, along with inhibitor-bound and xenon-derivatized structures, to improve our understanding of substrate positioning in the context of enzyme turnover. OleA is the first characterized thiolase superfamily member that has two long-chain alkyl substrates that need to be bound simultaneously and therefore uniquely requires an additional alkyl binding channel. The location of the fatty acid biosynthesis inhibitor, cerulenin, that possesses an alkyl chain length in the range of known OleA substrates, in conjunction with a single xenon binding site, leads to the putative assignment of this novel alkyl binding channel. Structural overlays between the OleA homologues, 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) synthase and the fatty acid biosynthesis enzyme FabH, allow assignment of the two remaining channels: one for the thioester-containing pantetheinate arm and the second for the alkyl group of one substrate. A short beta-hairpin region is ordered in only one of the crystal forms, and that may suggest open and closed states relevant for substrate binding. Cys143 is the conserved catalytic cysteine within the superfamily, and the site of alkylation by cerulenin. The alkylated structure suggests that a glutamic acid residue (Glu117 beta) likely promotes Claisen condensation by acting as the catalytic base. Unexpectedly, Glu117

  18. Distribucion espacial del crecimiento demográfico en los principales sistemas metropolitanos españoles: análisis contrastado para los sistemas metropolitanos de crecimiento policéntrico y crecimiento disperso

    OpenAIRE

    2011-01-01

    Distribucion espacial del crecimiento demográfico en los principales sistemas metropolitanos españoles. Análisis contrastado para los sistemas metropolitanos de crecimiento policéntrico y crecimiento disperso.

  19. LA INFLUENCIA DE LAS FORMAS INARTICULADAS, INTERJECCIONES Y ONOMATOPEYAS INGLESAS EN LOS TEBEOS ESPAÑOLES LA INFLUENCIA DE LAS FORMAS INARTICULADAS, INTERJECCIONES Y ONOMATOPEYAS INGLESAS EN LOS TEBEOS ESPAÑOLES

    Directory of Open Access Journals (Sweden)

    Isabel de la Cruz Cabanillas

    2009-10-01

    Full Text Available Los intentos de clasificación de interjecciones, onomatopeyas y formas inarticuladas no han resultado satisfactorios, pues no existe una taxonomía aceptada de forma generalizada. Basándonos en estudios anteriores, el presente trabajo pretende revisar estos fenómenos en tebeos tan netamente españoles como Mortadelo y Filemón, Zipi y Zape, Super López, Bruguelandia y TBO. Para ello se compila un corpus de unidades léxicas que reflejan tanto sonidos inarticulados, como interjecciones y onomatopeyas con el objetivo de estudiar si dichas unidades utilizadas en los tebeos corresponden a la representación de ese sonido articulado, esa interjección o esa onomatopeya en su forma inglesa o en su forma española. Así, se podrán obtener conclusiones sobre la posible influencia de la lengua inglesa en los tebeos españoles a través de la clasificación de las unidades recopiladas en el corpus, aún no tratándose de traducciones sino de producciones nacionales, y posiblemente se podrá determinar hasta qué punto dichas formas podrían entenderse por parte de un hablante hispano sin la ayuda gráfica que supone la viñeta.The attempts at classifying interjections, onomatopoeias and inarticulated forms have not turned out satisfactory, as there is no taxonomy that is widely accepted. Taking as basis previous studies, the present piece of work intends to revise these phenomena in so genuine Spanish comics as Mortadelo y Filemón, Zipi y Zape, Super López, Bruguelandia and TBO. To do so, a corpus of lexical units including inarticulated sounds, interjections and onomatopoeias is compiled in order to examine whether the units used in the comics correspond to the representation of that articulated sound, that interjection or that onomatopoeia in their English form or in their Spanish form. This will allow us to draw conclusions on the possible influence of the English language in the Spanish comics through the classification of the units compiled in

  20. El devenir pedagógico de los seminarios conciliares españoles en la Edad Contemporánea

    Directory of Open Access Journals (Sweden)

    Comella Gutiérrez, Beatriz

    2014-06-01

    Full Text Available This article is about pedagogical evolution in Spanish conciliar seminars starting in Enlightenment until XX century. Also Studies the Spanish Government laws and bilateral Agreements between Church and State; also exposes concisely pedagogy becoming in these academic institutions in papal and conciliar documents during Contemporany AgeEl artículo aborda una síntesis sobre la evolución pedagógica los seminarios conciliares españoles partiendo de la Ilustración; la legislación de los gobiernos españoles y los acuerdos Iglesia Estado sobre los mismos; además expone concisamente la naturaleza y pedagogía de estos centros académicos en los documentos pontificios y conciliares del siglo XX.

  1. Efeito da adição de oleína da gordura do leite nas características da manteiga

    OpenAIRE

    Mayara de Souza Queirós

    2015-01-01

    Resumo: Embora muito valorizada por suas características de sabor e aroma, a manteiga tem como desvantagem a difícil espalhabilidade a baixas temperaturas. A modificação das características funcionais da manteiga pode ser alcançada modificando-se sua composição e estrutura física. O objetivo deste trabalho foi avaliar o efeito da adição de oleína sobre as características de composição e estrutura da manteiga. A fração oleína adicionada ao creme de leite antes da fabricação da manteiga foi obt...

  2. La poésie créole haïtienne: notes de lecture de l’« Anthologie bilingue de la poésie créole haïtienne de 1986 à nos jours »

    Directory of Open Access Journals (Sweden)

    Ralph Ludwig

    2016-01-01

    Full Text Available Mehdi Chalmers, Chantal Kénol, Jean-Laurent Lhérisson et Lyonel Trouillot, éds.,Anthologie bilingue de la poésie créole haïtienne de 1986 à nos jours (Arles : Actes Sud/Atelier Jeudi Soir, 2015, 192 pages

  3. Efectos de la reforma contable en el patrimonio neto consolidado a 1 de enero de 2008 de los grupos españoles que no aplican normativa NIIF

    Directory of Open Access Journals (Sweden)

    Javier Legaz Ortiz

    2015-07-01

    Full Text Available En este trabajo se analiza el efecto de los cambios en las políticas y criterios contables sobre el patrimonio neto consolidado a 1 de enero de 2008 de los grupos españoles, no cotizados, que no aplicaron las NIIF como consecuencia de la adaptación de la normativa contable, instrumentada a través del nuevo PGC y la nota explicativa del ICAC sobre las normas de formulación de cuentas anuales consolidadas. Asimismo, se evalúan los efectos de la transición a la nueva normativa teniendo en cuenta el tamaño de los grupos. Con este objetivo, se examinaron las cuentas anuales consolidadas de los 100 mayores grupos españoles formuladas de acuerdo con la normativa española, buscando diferencias significativas entre los patrimonios netos bajo ambas normativas. Los resultados obtenidos ofrecen evidencia sobre la ausencia de impacto significativo en el patrimonio neto consolidado de estos grupos españoles en la transición a las nuevas normas contables del ejercicio 2007 al 2008 y, con ello, de que la información resulta útil para los usuarios en cuanto a su comparabilidad. Por consiguiente, el hecho de que el Gobierno permitiera para los grupos (y empresas españoles que no aplican NIIF no presentar información comparativa, puede considerarse finalmente una decisión acertada, pues ha facilitado la transición a las nuevas normas sin coste de comparabilidad y sin problemas de presentación y conversión de las cifras anteriores.

  4. Low-fluence rate, long duration photodynamic therapy in glioma mouse model using organic light emitting diode (OLED).

    Science.gov (United States)

    Guo, Han-Wen; Lin, Liang-Ting; Chen, Po-Hsiung; Ho, Meng-Huan; Huang, Wan-Ting; Lee, Yi-Jang; Chiou, Shih-Hwa; Hsieh, Yei-San; Dong, Chen-Yuan; Wang, Hsing-Wen

    2015-09-01

    The treatment of gliomas poses significant clinical challenges due to resistance to chemo and radiation therapy, and treatment side effects. Metronomic photodynamic therapy (mPDT), which involves long treatment time with low fluence rate and multiple or continuous photosensitizer administrations, has potential in treating gliomas without threatening the quality of life and has been demonstrated in rats and rabbits. mPDT in small animals such as mouse is not yet shown due to lack of lightweight illumination device for long periods of time. We presented low fluence rate (3mW/cm(2)) and long duration (3.7h) PDT treatment in a nude mouse model of human glioblastoma by using organic light emitting diode (OLED) with single dose of 5-aminolevulinic acid (ALA) administration as photosensitizer. Tumor volume was measured using bioluminescent imaging and the animal survival time was recorded. Additionally, we have performed limited PDT dosimetric measurements of PpIX fluorescence, tumor oxygenation and hemoglobin concentration in 3 PDT mice. For animals with similar pre- and immediate post-light tumor volume, the averaged total survival time of PDT mice is 40.5±9.2 days that are significantly longer than the control mice (26.0±2.0 days). The post-light survival time of PDT mice is 14.3±5.9 days that are marginally longer than the control group (8.0±0.0 days). In the dosimetric measurement, good maintenance of PpIX fluorescence in one PDT mouse has relatively improved survival time, compared with the other two PDT mice (i.e., 24 days versus 16 and 17 days). This pilot study demonstrated the feasibility of low-fluence rate and long treatment time of ALA-PDT using OLED without anesthetization of animals. The response of PDT treated animals with similar pre- and post-light tumor volume is encouraging to show a longer survival time than the controls. The dosimetric indices such as photosensitizer fluorescence and tissue oxygenation would help understand the possible treatment

  5. FIABILIDAD Y VALIDEZ DEL CUESTIONARIO DE ACTIVIDAD FÍSICA PAQ-A EN ADOLESCENTES ESPAÑOLES

    Directory of Open Access Journals (Sweden)

    David Martínez-Gómez

    2009-01-01

    Full Text Available Fundamentos: Los cuestionarios son una herramienta útil para valorar la actividad física (AF en grandes poblaciones. El objetivo de esta investigación fue valorar la fiabilidad y validez del cuestionario de AF PAQ-A en adolescentes españoles utilizando como criterio de referencia la medición de la AF por acelerómetro. Métodos: En una muestra de 82 adolescentes entre 12 y 17 años se evaluó la fiabilidad test-retest de la versión española del cuestionario PAQ-A en una semana. La fiabilidad se calculó mediante el Coeficiente de Correlación Intraclase (CCI, y la consistencia interna mediante el coeficiente ¿¿de Cronbach. En otra muestra de 232 adolescentes de 13 a 17 años se administró el PAQ-A, a la vez que se midió su AF durante 7 días mediante el acelerómetro ActiGraph GT1M. La asociación entre los resultados del PAQ-A y de la AF total y AF de moderada a vigorosa (AFMV obtenidos por el acelerómetro se analizó mediante la correlación de Spearman (rho. Resultados: La fiabilidad test-retest del PAQ-A mostró un CCI = 0,71 para la puntuación final del cuestionario. La consistencia interna mostró un coeficiente a= 0,65 para el primer cuestionario, a= 0,67 para el retest en la muestra de 82 adolescentes, y un coeficiente a= 0,74 en la muestra de 232 adolescentes. El PAQ-A mostró correlaciones moderadas con la AF total (rho = 0,39 y la AFMV (rho = 0,34 medidas mediante el acelerómetro. El PAQ-A obtuvo correlaciones moderadas y significativas para los chicos y no para las chicas al comparse con las medidas del acelerómetro. Conclusiones: El cuestionario de AF PAQ-A presenta una adecuada fiabilidad y una razonable validez para valorar la AF en adolescentes españoles.

  6. Quality changes of Moringa oleífera, variety Mbololo of Kenya, seed oil during frying.

    Directory of Open Access Journals (Sweden)

    Tsaknis, John

    1999-02-01

    Full Text Available The frying performance of Moringa oleífera variety Mbololo of Kenya seed oil (produced by cold pressure, extraction with n-hexane and a mixture of chloroform-methanol was studied especially as regards repeated frying operations. The oils were used for intermittent frying of potato slices and cod filets at a temperature of 175 ± 5°C for 5 consecutive days. Under such conditions thermal and oxidative decomposition of the oils takes place. The chemical changes occurring in the oils were evaluated. Free fatty acid content, peroxide value, specific extinction at 232 nm, polar compounds, colour and viscosity of the oils all increased, whereas the iodine values, smoke points, polyunsaturated fatty acid content, induction period and tocopherol concentration decreased. The effect of the oils on the organoleptic quality of these fried foods was also determined. The analytical and sensory data showed that the lowest deterioration occurred in cold pressure produced oil and the highest in n-hexane extracted oil.

    Se ha estudiado el comportamiento frente a la fritura, especialmente en el caso de frituras repetidas de aceite de semilla Moringa oleífera variedad Mbololo de Kenya (producido por presión en frío, extracción con n-hexano y una mezcla de cloroformo-metanol. Los aceites se usaron para la fritura intermitente de rodajas de patatas y filetes de bacalao a temperatura de 175 ± 5°C durante 5 días consecutivos. Bajo estas condiciones tuvo lugar la descomposición térmica y oxidativa de los aceites. Se evaluaron los cambios químicos ocurridos en los aceites. El contenido en ácidos grasos libres, índice de peróxido, extinción específica a 232 nm, compuestos polares, color y viscosidad de los aceites aumentaron, en tanto que el índice de iodo, punto de humo, contenido en ácidos grasos poliinsaturados, período de inducción y concentración en tocoferol disminuyeron. También se determinó el efecto de los aceites sobre

  7. La política de expulsión de españoles indeseables en México. (1915-1934

    Directory of Open Access Journals (Sweden)

    Yankelevich, Pablo

    2003-08-01

    Full Text Available This article reviews the laws and policies that, following the revolution, led to the deportation from Mexico of Spanish nationals. The first section explains the constitutional provisions that granted authority to the president to deport any foreigners whose presence was considered «inconvenient». The article also provides a quantitative sample of the Spaniards who were deported. Finally, an analysis of the deportation practices is presented through a study of the accusations made against them and the procedures that Mexican authorities implemented as a result.

    En este artículo se estudian las normas legales y las prácticas políticas que condujeron a la expulsión de españoles de territorio mexicano en los años de la posrevolución. En primer lugar, se explican los mecanismos constitucionales que autorizan al Presidente a deportar a cualquier extranjero cuya presencia sea juzgada como inconveniente; en segunda instancia, se muestra el universo de los españoles expulsados desde una dimensión cuantitativa; y por último, se presentan las prácticas de expulsión a través del estudio de las denuncias contra españoles y de las conductas de las autoridades derivadas de esas denuncias.

  8. Consanguinidad en españoles y castas de ciudad y campaña de Córdoba a fines del siglo XVIII

    Directory of Open Access Journals (Sweden)

    Küffer, Claudio

    2007-01-01

    Full Text Available A partir de datos del censo de 1795 para la provincia de Córdoba, se realizaron estimaciones de consanguinidad mediante isonimia para la Ciudad y la Campaña, tanto en “españoles” como en “castas”. Fueron calculados, en cada caso, el componente aleatorio (Fr, el no aleatorio (Fn, y total (Ft. Se encontraron, en ambos grupos etno-sociales, valores mayores de los citados indicadores en la Campaña que en la Ciudad de Córdoba. En Ciudad, el comportamiento de los dos grupos resultó idéntico, mientras que en Campaña estuvo más diferenciado, con mayor consanguinidad entre los españoles. Se concluyó que la Ciudad, pese al comportamiento más selectivo tradicionalmente atribuido a los españoles, presentaba características similares para ambos grupos: una población abierta y sin preferencias por elección de cónyuge isónimo. En Campaña, las estimaciones fueron de mayor magnitud para los españoles, especialmente el Fn, aunque el escaso valor de éste no sugiere una tendencia muy marcada al casamiento entre parientes. En suma, se encontró mayor diferencia dentro de cada grupo etno-social entre las dos regiones consideradas que entre ellos para la misma región.

  9. De Novo Design of Boron-Based Host Materials for Highly Efficient Blue and White Phosphorescent OLEDs with Low Efficiency Roll-Off.

    Science.gov (United States)

    Xue, Miao-Miao; Huang, Chen-Chao; Yuan, Yi; Cui, Lin-Song; Li, Yong-Xi; Wang, Bo; Jiang, Zuo-Quan; Fung, Man-Keung; Liao, Liang-Sheng

    2016-08-10

    Borane is an excellent electron-accepting species, and its derivatives have been widely used in a variety of fields. However, the use of borane derivatives as host materials in OLEDs has rarely reported because the device performance is generally not satisfactory. In this work, two novel spiro-bipolar hosts with incorporated borane were designed and synthesized. The strategies used in preparing these materials were to increase the spatial separation of the highest occupied molecular orbitals (HOMOs) and lowest unoccupied molecular orbitals (LUMOs) in the molecules, tune the connecting positions of functional groups, and incorporate specific functional groups with desirable thermal stability. Based on these designs, phosphorescent OLEDs with borane derivatives as hosts and with outstanding device performances were obtained. In particular, devices based on SAF-3-DMB/FIrpic exhibited an external quantum efficiency (EQE) of >25%. More encouragingly, the device was found to have quite a low efficiency roll-off, giving an efficiency of >20% even at a high brightness of 10000 cd/m(2). Furthermore, the EQE of the three-color-based (R + G + B) white OLED employing SAF-3-DMB as a host was also as high as 22.9% with CIE coordinates of (x, y) = (0.40, 0.48). At a brightness of 5000 cd/m(2), there was only a 3% decrease in EQE from its maximum value, implying a very low efficiency roll-off.

  10. Ole Romer's method still on the stage. The study of two bound eclipsing binaries in quintuple system V994 Her

    CERN Document Server

    Zasche, P; 10.1093/mnras/sts616

    2013-01-01

    More than three hundred years ago, Ole Romer measured the speed of light only by observing the periodic shifting of the observed eclipse arrival times of Jupiter's moons arising from the varying Earth-Jupiter distance. The same method of measuring the periodic modulation of delays is still used in astrophysics. The ideal laboratories for this effect are eclipsing binaries. The unique system V994 Her consists of two eclipsing binaries orbiting each other. However, until now it was not certain whether these are gravitationally bound and what their orbital period is. We show that the system is in fact quintuple and the two eclipsing binaries are orbiting each other with period about 6.3 years. This analysis was made only from studying the periodic modulation of the two periods, when during the periastron passage one binary has an apparently shorter period, while the other one longer, exactly as required by a theory. Additionally, it was found that both inner eclipsing pairs orbit with slightly eccentric orbits u...

  11. Adaptación del Cuestionario de Voluntad de Trabajo a una muestra de universitarios españoles

    Directory of Open Access Journals (Sweden)

    Ana Andrés

    2013-01-01

    Full Text Available El objetivo del presente estudio es evaluar las propiedades psicométricas del Cuestionario de Voluntad de Trabajo adaptado a una muestra de estudiantes universitarios españoles, tanto en su versión de autoinforme como en la versión destinada a evaluar los pares. Los participantes de este estudio son 194 estudiantes de la Universidad de Barcelona, a los que se aplicaron tanto el cuestionario de Voluntad de Trabajo (CVT como su versión para evaluar a los pares (CVT-P, así como las subescalas de Perseverancia y Distorsión del Big Factor Questionnaire. Los resultados sugieren la eliminación de dos de los ítems de los cuestionarios CVT y CVT-P. Las correlaciones ítem-total corregidas y la consistencia interna fue adecuada para ambos, y el análisis factorial confirmatorio confirma su unidimensionalidad. La relación entre la escala CVT y las demás medidas criterio es adecuada. En conclusión, podemos afirmar que las escalas CVT y CVT-P obtuvieron unas adecuadas propiedades psicométricas tras la depuración de las mismas.

  12. Buena sangre y hábitos españoles: repensando a Alonso de Silva y Diego de Torres

    Directory of Open Access Journals (Sweden)

    Joanne Rappaport

    2012-01-01

    Full Text Available Este artículo explora la frontera porosa entre mestizos e indígenas en el Nuevo Reino de Granada durante el siglo XVI, interrogándose sobre cómo los mestizos aspirantes a los cacicazgos muiscas se presentaron a sí mismos y cómo fueron caracterizados por sus adversarios en la negociación de sus relaciones con la corona española, los encomenderos locales y sus propios vasallos. La reflexión se centrará, en particular, en dos hombres: don Alonso de Silva, cacique de Tibasosa, y don Diego de Torres, cacique de Turmequé; ambos hijos de mujeres pertenecientes a líneas de sucesión de los cacicazgos muiscas, pero que fueron criados en hogares paternos españoles. Las pretensiones de estos dos personajes sobre los cacicazgos contradecían las aspiraciones de otros mestizos de élite de su tiempo, quienes buscaban aceptación en la sociedad española de Santafé y Tunja. En contraste, los dos se describían sistemáticamente a sí mismos como candidatos  privilegiados para lograr el estatus de miembros de la élite indígena, recurriendo a marcadores de identidad cristianos e ibéricos.

  13. Investigation of electrical and optical properties of MEH-PPV: ZnO nanocomposite films for OLED applications

    Science.gov (United States)

    Azhar, N. E. A.; Shafura, A. K.; Affendi, I. H. H.; Shariffudin, S. S.; Saurdi, I.; Alrokayan, Salman A. H.; Khan, Haseeb A.; Rusop, M.

    2016-07-01

    Recent investigations of the promising materials for optoelectronic have been demonstrated by introducing n-type inorganic material into conjugated polymer. The optical and electrical of nanocomposite films based on poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and zinc oxide (ZnO) nanostructured of various deposition layers (1 to 3 layers) have been investigated. The MEH-PPV: ZnO nanocomposite films were deposited using spin-coating technique. The surface morphology nanocomposite films were characterized using field emission scanning electron microscope. From surface profiler measurement, we found that the thickness of nanocomposite films increased as deposition time increased. The optical properties were measured using photoluminescence spectroscope. The photoluminescence (PL) spectra showed that two deposition layers is the highest intensity at visible region (green emission) due to high energy transfer from particles to the polymer. The current density for two layers sample is due to aggregation of conjugated polymer chain hence form excited interchain exciton for optical excitation. This study will provide better performance and suitable for optoelectronic device especially OLEDs application.

  14. Los maestros españoles de los «niños de Morelia» nuevas aportaciones

    Directory of Open Access Journals (Sweden)

    Ignacio Cruz, José

    2003-08-01

    Full Text Available On the performance of the Spanish teachers that accompanied the so called «Children of Morelia» expedition, the specialists that have dealt with the topic so far have made a severe negative judgment. In this work we bring to light, for the first time and through unpublished documentation, the repeated initiatives that these teachers took to try to complete their guardian mission, which could not be carried out completely due to the position of the Mexican authorities.

    Sobre la actuación de los maestros españoles que acompañaron a la expedición de los «niños de Morelia», se ha formado un severo juicio negativo por parte de los especialistas que han tratado el tema. En este trabajo se dan a conocer, por primera vez y a partir de documentación inédita, las repetidas iniciativas que plantearon dichos maestros para intentar cumplir su misión tutelar, las cuales chocaron con los planteamientos de las autoridades mexicanas.

  15. Spectroscopic mapping and selective electronic tuning of molecular orbitals in phosphorescent organometallic complexes – a new strategy for OLED materials

    Directory of Open Access Journals (Sweden)

    Pascal R. Ewen

    2014-11-01

    Full Text Available The improvement of molecular electronic devices such as organic light-emitting diodes requires fundamental knowledge about the structural and electronic properties of the employed molecules as well as their interactions with neighboring molecules or interfaces. We show that highly resolved scanning tunneling microscopy (STM and spectroscopy (STS are powerful tools to correlate the electronic properties of phosphorescent complexes (i.e., triplet emitters with their molecular structure as well as the local environment around a single molecule. We used spectroscopic mapping to visualize several occupied and unoccupied molecular frontier orbitals of Pt(II complexes adsorbed on Au(111. The analysis showed that the molecules exhibit a peculiar localized strong hybridization that leads to partial depopulation of a dz² orbital, while the ligand orbitals are almost unchanged. We further found that substitution of functional groups at well-defined positions can alter specific molecular orbitals without influencing the others. The results open a path toward the tailored design of electronic and optical properties of triplet emitters by smart ligand substitution, which may improve the performance of future OLED devices.

  16. Independencia familiar y situación laboral de los jóvenes españoles

    Directory of Open Access Journals (Sweden)

    María Consuelo Colom Andrés

    2003-01-01

    Full Text Available En las últimas décadas se viene observando que en España los jóvenes retrasan cada vez más la edad de emancipación, por lo que cabría preguntarse si este fenómeno se debe exclusivamente a factores culturales o está relacionado con la situación del mercado laboral. Estudios anteriores en otros países y en España han puesto en evidencia que la formación de hogar y la actividad laboral son dos decisiones que los jóvenes toman conjuntamente. El objetivo de este trabajo es averiguar si estas dos decisiones siguen estando interrelacionadas para los jóvenes españoles El análisis se ha realizado para el conjunto de todos los jóvenes y, por separado, para jóvenes residentes en ámbitos urbano y no urbano.

  17. Electroluminescence enhancement of glass/ITO/PEDOT:PSS/MEH-PPV/PEDOT:PSS/Al OLED by thermal annealing

    Science.gov (United States)

    Hewidy, Dina; Gadallah, A.-S.; Fattah, G. Abdel

    2017-02-01

    Manufacturing of glass/ITO/PEDOT:PSS/MEH-PPV/PEDOT:PSS/Al organic light emitting diode (OLED) by depositing PEDOT:PSS/MEH-PPV/PEDOT:PSS using spin coating has been reported. The roles of PEDOT:PSS in the structure have been reported. It allows transportation of holes from ITO to the highest occupied molecular orbit (HOMO) of MEH-PPV. In additions, it allows transportation of electrons from Al to lowest unoccupied molecular orbit (LUMO) of MEH:PPV. Further, it confines electrons in the LUMO of MEH:PPV due to the higher barrier of PEDOT:PSS of LUMO. The effect of thermal annealing on the current-voltage curve as well as on the electroluminescence intensity has been reported. The results show that the current increased from 25 mA to 52 mA at 7 V, when the sample was thermally annealed at 150 °C. Such enhancement in electrical injection leads to enhancement of the electroluminescence to a factor of 4.7 at the peak luminescence wavelength (∼592 nm). Reasons for electroluminescence improvement caused by thermal annealing have been proposed.

  18. [Assessment of the quality of scientific evidence in Anales Españoles de Pediatría].

    Science.gov (United States)

    González De Dios, J

    2001-04-01

    Evidence-based medicine is a new scientific paradigm that aims to use medical literature more effectively in guiding medical practice. The aim of this study was to assess the quality of scientific evidence in Spanish pediatric articles. Original articles published in Anales Españoles de Pediatría during a 6.5year period (n733) were compared with those published in Pediatrics during a 1.5year period (n300). The quality of scientific evidence in Anales was high in only 3% of original articles (randomized clinical trials). It was average in 30.4% (non-randomized clinical trials, cohort studies, case-control studies) and poor in 66.6% (descriptive studies, case reports, etc.). Only 10.2% of articles used appropriate methodological concepts according to evidence-based medicine. These concepts were mainly "soft" (odds ratio, relative risk, confidence interval) and no "hard" concepts (number needed to treat, likelihood ratio, odds pretest) were detected. The pediatric specialty showing the highest quality of scientific evidence, greatest use of appropriate methodological concepts and greatest statistical accessibility was pneumology. The first step in improving the quality of scientific evidence would be to establish collaboration between epidemiologists and/or biostatisticians. The evidence-based bibliometric indicators found in Pediatrics serve as a gold standard for Anales.

  19. Diseño de un modelo de reputación para cooperativas oleícolas

    Directory of Open Access Journals (Sweden)

    Francisca Castilla-Polo

    2016-01-01

    Full Text Available El objetivo de este trabajo ha sido definir una escala de medida de la reputación de cooperativas oleícolas. La inexistencia de estudios previos y la trascendencia de la reputación como activo para las empresas en general y para las cooperativas almazareras en particular justifican nuestro interés y la oportunidad de esta investigación. Concretamente, se presenta un modelo causal integrado por 4 variables explicativas de este importante intangible, siendo la calidad, la innovación, los premios y la responsabilidad social, variable esta última a la que se presta una especial atención por ser causante, en cierto grado, de las primeras. Para validar empíricamente el modelo conceptual desarrollado se ha diseñado un cuestionario al que de forma anónima ha respondido una muestra representativa de directivos del sector. Mediante la técnica Partial Least Squares (PLS se ha analizado tanto el modelo de medida como el modelo estructural. Los resultados obtenidos son satisfactorios en tanto que permiten verificar la relación directa de los comportamientos responsables de las almazaras con la percepción que tienen sus directivos de la reputación de la misma en el mercado.

  20. Theoretical studies on electronic structures and photophysical properties of anthracene derivatives as hole-transporting materials for OLEDs.

    Science.gov (United States)

    Chitpakdee, Chirawat; Namuangruk, Supawadee; Khongpracha, Pipat; Jungsuttiwong, Siriporn; Tarsang, Ruangchai; Sudyoadsuk, Taweesak; Promarak, Vinich

    2014-05-05

    The electronic structures and photophysical properties of anthracene derivatives as hole-transporting materials (HTM) in OLEDs have been studied by DFT and TD-DFT methods. Thiophene and triphenylamine (TPA) moieties are used as substituents in anthracene based HTMs providing FATn and FAPn compounds (n=1-2), respectively. The calculated electronic levels by B3LYP show proper energy matching of FAPn and hole-injecting layer (HIL), indicating that the hole-transports of the FAPn compounds are better than the FATn compounds. The photophysical properties calculated by TD-B3LYP elucidate that TPA in FAPn compounds acts as electron donating group and induces charge transfer character in the absorptions. Furthermore, the calculated ionization potential (IP), electron affinity (EA) and reorganization energies also revealed that the extended FAP2 compound has the highest charge-transporting ability among the studied compounds. The calculated results are consistent to our experimental observations showing that FAP2 exhibits bright fluorescence with highest quantum yield in electroluminescent devices. Understanding of these properties is useful for further design of new HTMs of desired properties, such as high efficiency and stability.

  1. Improvement of color purity in white OLED based on Zn(HPB){sub 2} as blue emitting layer

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Dong-Eun [Department of Electrical Engineering and NTRC, Dong-A University, Busan, 604-714 (Korea, Republic of); Kim, Won-Sam [Department of Chemistry and Institute of Functional Materials, Inje University, Gimhae, 621-749 (Korea, Republic of); Kim, Byoung-Sang [Department of Electrical Engineering and NTRC, Dong-A University, Busan, 604-714 (Korea, Republic of); Lee, Burm-Jong [Department of Chemistry and Institute of Functional Materials, Inje University, Gimhae, 621-749 (Korea, Republic of); Kwon, Young-Soo [Department of Electrical Engineering and NTRC, Dong-A University, Busan, 604-714 (Korea, Republic of)], E-mail: yskwon@dau.ac.kr

    2008-04-01

    We synthesized zinc (II) [2-(2-hydroxyphenyl)benzoxazole] (Zn(HPB){sub 2}) as blue emitting materials and evaluated in the organic light emitting diodes (OLEDs). The layer of Zn(HPB){sub 2} doped with 4-(dicyanomethylene)-2-t-butyl-6(1,1,7,7-tetramethyljulolidyl-9-enyl) -4H-pyran (DCJTB) (Zn(HPB){sub 2}:DCJTB) as emitters has been demonstrated. The structure of the device is indium-tin-oxide (ITO)/N,N'-bis-(1-naphthl)-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB, 40 nm)/Zn(HPB){sub 2}/Zn(HPB){sub 2}:DCJTB/Alq{sub 3} (20 nm)/LiF/Al. The thickness of Zn(HPB){sub 2} layer was 0, 10, 20, 30 nm at the same time the thickness of Zn(HPB){sub 2}:DCJTB layer were 40, 30, 20, 10 nm. When thickness of Zn(HPB){sub 2} layer was 30 nm and the thickness of Zn(HPB){sub 2}:DCJTB layer was 10 nm, white emission is achieved. The Commission Internationale de l'Eclairage (CIE) coordinates of the white emission are (0.304, 0.332) at an applied voltage of 10.5 V.

  2. MOTIVOS DE PRÁCTICA DE ACTIVIDAD FÍSICO-DEPORTIVA EN ADOLESCENTES ESPAÑOLES: ESTUDIO AVENA

    Directory of Open Access Journals (Sweden)

    Alejandro César Martínez Baena

    2012-01-01

    Full Text Available Fundamentos: La práctica de actividad físico-deportiva es un medio ideal para la obtención dbeneficios bio-psico-sociales en la salud de los jóvenes. El objetivo del estudio fue conocer los motivos de práctica de actividad físico-deportiva en una muestra representativa de adolescentes españoles. Métodos: Se efectuó un estudio descriptivo de corte transversal y se empleó la encuesta sobre comportamientos, actitudes y valores sobre actividad física y deportiva del Grupo AVENA. La muestrafueron 2.859 estudiantes, procedentes de centros públicos y privados de cinco ciudades españolas: Granada, Madrid, Murcia, Santander y Zaragoza. Resultados: La diversión, la realización de ejercicio físico, estar con los amigos y el gusto hacia lapráctica son, en ese orden, los principales motivos señalados para realizar actividad físico- deportiva en el tiempo libre. El género y la edad modifican significativamente los motivos de práctica físico deportiva. Conclusiones: El conocimiento de los motivos de práctica podría permitir desarrollar programas deintervención eficaces y duraderos en la adopción de estilos de vida saludables en los jóvenesactuales.

  3. Deslegitimando los estereotipos pictóricos españoles: de Equipo Crónica a Antonio Saura

    Directory of Open Access Journals (Sweden)

    Iñigo Sarriugarte

    2013-07-01

    Full Text Available A partir de las restrictivas normas culturales y artísticas, que se imponen en la España franquista, una serie de creadores se lanzan en un proceso de deslegitimización pictórica en torno a toda una serie de estereotipos culturales españoles. Entre estos creadores, encontramos el grupo Equipo Crónica, que se embarca bajo los condicionantes del realismo social en una batalla por satirizar y ridiculizar aquellos baluartes de la cultura artística española durante los años 60, que eran radicalmente defendidos por el régimen franquista. Realizan parodias culturales, que arremeten contra artistas convertidos en mitos, como El Greco, Velázquez, Rivera, Zurbarán y Goya, entre otros. Por otro lado, bajo un lenguaje cercano a la neofiguración que se da a partir de finales de los años 50, Antonio Saura arremete en sus Retratos imaginarios con violencia creativa contra estos mismos estereotipos.

  4. [Archivos Españoles de Urología. Enrique Pérez Castro's direction (1944-1980)].

    Science.gov (United States)

    Albacete, Mariano Pérez

    2008-01-01

    With the occasion of the centenary of the birth of Dr. Enrique Pérez Castro, founder, first director and editor of the journal Archivos Españoles de Urología, at this time when the issue No. 61 comes out, we performed a historic study of the evolution of the journal throughout the 36 years it was ruled by him, between April 1944 and December 1980. Complete review of the 158 issues, together with three extraordinary issues, included in the 31 volumes edited in the period Dr. Pérez Castro directed it. The journal, senior journal in Spanish Urology, developed its main objective of being the communication and knowledge exchange media, with the exposition of scientific works, among the members of the Spanish urological community who admitted it with interest and complete acceptation. The work and devotion of Dr. Pérez Castro as director conferred the journal a great quality and achieved to join it to the Spanish Association of Urology, which demonstrated its category and reinforced its diffusion, acceptation and continuity. It is by itself an exceptional document and splendid historic synopsis of our urology over the second half of the 20th century.

  5. 用于 AM-OLED 驱动芯片的 MDDI物理层传输电路设计%Design of MDDI Physical Layer Transmission Circuit Used for AM-OLED Driver IC

    Institute of Scientific and Technical Information of China (English)

    夏佳佳; 魏廷存; 李博; 李勇

    2014-01-01

    High speed serial interface-MDDI (Mobile Display Digital Interface) ,due to its many advantages such as high transmission speed ,low power consumption ,high reliability ,fewer cables and low EMI (Electro-Magnetic Interference) ,is widely used in the portable mobile display equipments such as mobile phones .This paper presents a physical layer circuit design of MDDI which is used in AM-OLED (Active Matrix-Organic Light Emitting Diode) driver IC .The circuit is designed in a TSMC 0 .35 μm CMOS technology ,the circuit supports both the normal operation and low power operation modes .The simulation results show that ,the circuit can operate at the rate of 400 Mb/s for per transition line ,which is completely satisfied with the MDDI standard ,and in the low power operation mode ,the static power consumption is only 0 .75 mW .%高速串行接口MDDI(Mobile Display Digital Interface)标准具有传输速率高、功耗小、可靠性高、引脚数目少以及EMI(Electro-Magnetic Interference)噪声小等优点,广泛应用于手机等便携式移动显示设备中.基于TSMC 0.35μm CMOS工艺,设计实现了一种用于AM-OLED(Active Matrix-Organic Light Emitting Diode)驱动芯片的MDDI物理层传输电路.该电路支持标准模式和低功耗模式.经仿真验证,MDDI的传输速率可达400 Mb/s ,完全满足MDDI协议标准.在低功耗模式下,其静态功耗仅为0.75 mW .

  6. El nacimiento del miedo, 1692. Indios y españoles en la Ciudad de México

    Directory of Open Access Journals (Sweden)

    Gonzalbo Aizpuru, Pilar

    2008-12-01

    Full Text Available During the year 1692 there was a shortage of cereals and the became too expensive. On Sunday; June the eighth; the corn was finished and the functionaries responsible of the distribution beat the Indian women that protested. Very soon a lot of people congregated and started a riot. The viceroyal palace and the «cabildo» houses were burned and many shops plundered. The repression was very hard; specially against the Indian people; but the Indians weren’t the only ones involved. Blacks and mestee population were the «plebe»; the populace of the city; offended by the injustices of the government and the humiliations of the proud rich Spaniards. The Spanish population started feeling fear of their neighbors; not only Indians but poor people.

    En 1692 hubo escasez y carestía de cereales en la ciudad de México. Un domingo del mes de junio se acabó el maíz en la alhóndiga y los encargados de repartirlo golpearon a las indias que protestaban. Muy pronto llegó mucha gente y se inició un alboroto que duró varias horas y durante el cual se incendiaron el palacio de los virreyes y las casas del cabildo; muchas tiendas fueron saqueadas. La represión fue muy dura y se dirigió contra los indios; pero no fueron sólo indios los que participaron en el motín, sino la «plebe» de la ciudad, mezcla de todos los grupos resentidos por las injusticias del gobierno y las humillaciones de los ricos españoles. La población española comenzó a sentir miedo de sus vecinos, que ya no se identificaban con los indios.

  7. Apéndices masoréticos en manuscritos bíblicos españoles

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    Ortega Monasterio, María Teresa

    2008-12-01

    Full Text Available There is a significant corpus of Spanish Hebrew manuscripts of the Bible dated 13th-15th centuries. These manuscripts do all contain Masorah in its different categories: parva, magna, finalis or Masoretic lists being it ornamental or not. So far, these manuscripts have been studied from a textual point of view, either critical editions of their texts or Masorah, or textual comparative studies. However, comparative studies on the specific characteristics of the Masoretic contents and, moreover, a comparison of the different manuscripts from this specific perspective, are scarce. In this paper, I intend to analyse some of these Masoretic lists, by comparing a selection of the most prestigious Spanish Bible manuscripts, their similarities and discrepancies. Furthermore, I will present under scrutiny some of the so-considered ornamental Masorahs and their texts.

    Existe un importante corpus de manuscritos hebreos bíblicos hispánicos datado entre los siglos XII y XV. Estos manuscritos contienen información masorética de diversas categorías: masoras parva, magna, finalis, o bien apéndices masoréticos, ya sean ornamentales o no. Hasta el momento, estos manuscritos han sido estudiados desde un punto de vista textual, es decir, mediante ediciones críticas de sus textos y masoras o de forma comparativa entre ellos. Sin embargo, los estudios comparativos sobre los contenidos masoréticos y sus características especiales son escasos. En este artículo se analizan algunas de estas listas masoréticas contenidas en una selección de manuscritos españoles escritos en la misma época, comparando sus similitudes y discrepancias, prestando especial atención a los apéndices masoréticos,las masoras ornamentales y sus textos.

  8. Como recuerda la televisión. El pasado evocado en los informativos españoles

    Directory of Open Access Journals (Sweden)

    Francescutti, Luis Pablo

    2015-08-01

    Full Text Available Mass media relationships with collective memory are the subject of ongoing debate; either they are blamed for immersing the audience into a fleeting amnesic present; or they are hailed as crucial mediators of remembering and forgetting in contemporary society. This article contributes to the discussion with a research about one of the ways television has to remember: anniversaries. The content analysis of Spanish news programs confirmed the regular broadcasting of anniversaries. These news narrate a version of history highly dependent upon the news program format, reshaping the borders of the subjects, countries and facts worthy of remembrance while legitimizing television as witness to history and as history narrator. Far from promoting social amnesia, this commemorative journalism allows television to get involved in the management of collective memory.Las relaciones de los medios de comunicación con la memoria colectiva son objeto de controversia: ora se les acusa de instalar a la audiencia en un presente fugaz y desmemoriado; ora se reconoce su papel de procesadores del recuerdo y el olvido. Para contribuir al debate se presenta un estudio sobre una de las maneras de recordar de la televisión: las conmemoraciones. El análisis de contenido de los informativos televisivos españoles muestra que estas noticias se han vuelto un contenido permanente de estos programas. Las efemérides construyen una versión de la historia altamente condicionada por el formato del noticiario, que reconfigura el perímetro de los asuntos dignos de evocación al tiempo que legitima al dispositivo televisivo como testigo y narrador de los hechos históricos. Se concluye que, lejos de fomentar la amnesia social, el periodismo conmemorativo le sirve al medio audiovisual para intervenir en la gestión de la memoria colectiva.

  9. Las estrategias de los partidos políticos españoles hacia las organizaciones sociales

    Directory of Open Access Journals (Sweden)

    Verge, Tània

    2007-12-01

    Full Text Available This article analyses the strategies used by the three state-level Spanish political parties (Spanish Socialist Workers’ Party, Popular Party and United Left in relation to civil society and their evolution during the period 1977-2004. It will be shown that competition and co-optation were replaced by different collaboration mechanisms along the 1990s. On the one hand, collaboration might be functional to electoral mobilization and, on the other hand, it facilitates the obtaining of the necessary inputs to elaborate party manifestos. Furthermore, it reinforces parties’ credibility before the electorate regarding their commitment to certain social demands. Against the cartel party thesis, access to public financing is compatible with a new rapprochement to society.

    En este artículo se analizan las estrategias utilizadas por los tres partidos políticos españoles de ámbito estatal (PSOE, PP e IU en relación con la sociedad civil organizada y su evolución en el período 1977-2004. Se demostrará que las estrategias de competición y cooptación cedieron paso a partir de los años noventa a distintas fórmulas de colaboración con las organizaciones sociales. Por un lado, esta última estrategia puede ser funcional a la movilización electoral y, por otro, facilita la obtención de los inputs necesarios para elaborar los programas electorales. Asimismo, permite a los partidos hacer creíble ante el electorado su compromiso con ciertas demandas sociales y recuperar cierta legitimidad pública. En contra de las tesis del cartel party, el acceso a la financiación pública resulta compatible con un nuevo acercamiento a la sociedad.

  10. Apellidos y estructura de la población a partir de una muestra de gitanos españoles

    Directory of Open Access Journals (Sweden)

    Mesa Saturnino, María Soledad

    2005-01-01

    Full Text Available Se ha tomado una muestra de 837 familias gitanas, recogida en cuatro provincias españolas: Barcelona, Córdoba, Madrid y Zaragoza. Se ha analizado dicha muestra de manera global y dividida en cuatro series, según su procedencia geográfica, utilizando el primer apellido de cada miembro de la pareja. El total de apellidos encontrados asciende a 212, para los cuales se ha realizado una distribución de frecuencias, encontrándose algunos de estos apellidos como típicos de la población gitana española, mientras que hay un cierto porcentaje que se presenta esporádicamente. La vinculación de apellidos por zonas geográficas permite establecer la distribución y dispersión de los individuos. La complejidad de la muestra permite la posibilidad de estudiar apellidos con una máxima extensión sobre la geografía española, como el apellido Cortés, por ejemplo, o el caso extremo de determinados apellidos concentrados en una sola región, como sucede con el apellido Motas. Los resultados indican una diferente distribución de apellidos según la procedencia. También se ha utilizado el método de Crow para estimar la consanguinidad por isonimia, que ha proporcionado información acerca de las pautas de comportamiento social del grupo. Las estimas encontradas son altas, mayores que las halladas en otras poblaciones españolas, previamente estudiadas. Todo ello, marca un perfil diferencial de los gitanos españoles respecto al resto de la población.

  11. Hábitos de uso en Internet y en las redes sociales de los adolescentes españoles

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    Antonio García Jiménez

    2013-08-01

    Full Text Available Profundizar en los cambios que se están perfilando en los hábitos online de los adolescentes, en particular debido a la fuerte irrupción de las redes sociales en su vida cotidiana, así como en las implicaciones socioculturales de estos procesos, es el objeto de este trabajo. La metodología de investigación se centró en un cuestionario autoadministrado aplicado a escala nacional. Sobre una muestra representativa nacional de 2.077 adolescentes (de 12 a 17 años, se ha buscado actualizar la información relativa a las prácticas online entre los menores y adolescentes españoles, con atención específica a la extensión del fenómeno de las redes sociales e identificando su influencia sobre las prácticas de los adolescentes en la Red. De igual modo, se comparan los usos entre los usuarios habituales de las redes sociales y los que no las tienen entre sus prácticas cotidianas, con la idea de detectar la influencia del uso de las redes sociales en los usos generales en Internet y controlando esa relación en función de cuatro variables: sexo, edad, titularidad del centro al que asisten los adolescentes y clase social. Entre las principales conclusiones destacamos el uso más intensivo en tiempo y en actividades de los usuarios que utilizan muy frecuentemente las redes sociales, con especial incidencia en aquellas actividades que les permiten mantener el contacto y compartir contenidos con sus pares.

  12. Buena sangre y hábitos españoles: repensando a Alonso de Silva y Diego de Torres

    Directory of Open Access Journals (Sweden)

    Joanne Rappaport

    2012-05-01

    Full Text Available Normal 0 21 false false false ES-CO X-NONE X-NONE MicrosoftInternetExplorer4 Este artículo explora la frontera porosa entre mestizos e indígenas en el Nuevo Reino de Granada durante el siglo XVI, interrogándose sobre cómo los mestizos aspirantes a los cacicazgos muiscas se presentaron a sí mismos y cómo fueron caracterizados por sus adversarios en la negociación de sus relaciones con la corona española, los encomenderos locales y sus propios vasallos. La reflexión se centrará, en particular, en dos hombres: don Alonso de Silva, cacique de Tibasosa, y don Diego de Torres, cacique de Turmequé; ambos hijos de mujeres pertenecientes a líneas de sucesión de los cacicazgos muiscas, pero que fueron criados en hogares paternos españoles. Las pretensiones de estos dos personajes sobre los cacicazgos contradecían las aspiraciones de otros mestizos de élite de su tiempo, quienes buscaban aceptación en la sociedad española de Santafé y Tunja. En contraste, los dos se describían sistemáticamente a sí mismos como candidatos  privilegiados para lograr el estatus de miembros de la élite indígena, recurriendo a marcadores de identidad cristianos e ibéricos.

  13. Prevalencia de trastornos de la conducta alimentaria en universitarios españoles y factores asociados: proyecto uniHcos

    Directory of Open Access Journals (Sweden)

    Leticia Martínez-González

    Full Text Available Introducción: Los trastornos de la conducta alimentaria (TCA son especialmente frecuentes en los jóvenes. Objetivo: Determinar la prevalencia de TCA en jóvenes universitarios y sus factores asociados. Metodología: Estudio de prevalencia en jóvenes universitarios españoles del proyecto uniHcos. Mediante regresión logística no condicional se determinó la magnitud de la asociación entre los factores de riesgo asociados al estilo de vida y padecer un TCA medido mediante el cuestionario Sick. Control, One, Fat, Food (SCOFF. Resultados: La prevalencia de TCA fue del 19.5%, siendo mayor en mujeres (ORa=1.59; p=0.006. En los chicos, tener criterios de padecer TCA se asoció con vivir en colegios mayores. con realizar "binge drinking", y uso problemático de internet. En las mujeres el estudiar titulaciones diferentes a las ciencias de la salud (ORa=1.50 y el uso problemático de internet (ORa=2.33. Aquellas mujeres con riesgo de TCA presentaban con mayor frecuencia depresión (ORa=2.02, dolores menstruales (ORa=1.81 y mala salud percibida (ORa=1.70. En los hombres, aquellos con riesgo de TCA presentaban con mayor frecuencia una mala salud percibida (ORa=2.42. Conclusiones: El riesgo de obtener resultados positivos en el SCOFF en nuestro estudio es similar a lo publicado para otras poblaciones de estudiantes, así como su asociación con determinadas adicciones y problemas de salud. Se observaron diferencias en función del sexo que precisan atención en el diseño de estrategias de prevención y control.

  14. La participación de los militares españoles en la prensa del siglo XVIII

    Directory of Open Access Journals (Sweden)

    Manuel-Reyes GARCÍA HURTADO

    2011-07-01

    Full Text Available Normal 0 21 false false false ES X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-fareast-language:EN-US;} Los militares españoles intervienen en el siglo XVIII, fundamentalmente en su segunda mitad, de una manera decidida en la República de las Letras. Con este estudio pretendemos llevar a cabo un acercamiento a los autores que procedentes del ejército y de la armada colaboraron, ya fuera de manera asidua o esporádica, en publicaciones periódicas dieciochescas, especialmente desde el último tercio del siglo, así como realizar un análisis de los temas que les preocupaban y sobre los cuales escribieron artículos. Obtendremos así datos sobre un cauce de intervención directa de la milicia en la sociedad que nada tiene que ver con el fenómeno bélico.

  15. Baja percepción de riesgo en el consumo de alcohol en adolescentes españoles

    Directory of Open Access Journals (Sweden)

    Cristian Suárez-Relinque

    Full Text Available Según los estudios recientes, los adolescentes españoles muestran una baja percepción del riesgo asociado al consumo de alcohol. El objetivo de la presente investigación es analizar los factores que favorecen esta baja percepción a partir de la opinión de un grupo de 32 profesionales/expertos en adolescencia, familia, escuela, medios de comunicación y políticas locales. Se utilizó una metodología cualitativa, fundamentada en Grounded Theory, a partir de la información obtenida mediante 5 grupos de discusión guiados por entrevistas semiestructuradas. Se identificaron 12 factores o subcategorías agrupados en 4 categorías generales: riesgo a corto plazo, inmediatez y percepción de invulnerabilidad (categoría “pensamiento adolescente”; concepción benévola del alcohol, normalización del consumo y binomio alcohol-diversión (categoría “normas sociales”; consumo habitual en los padres, inconsistencia verbal-no verbal en el modelado parental, consumo sin riesgo en los medios, consumo con resultados positivos en los medios (categoría “modelos sociales”; excesivo contenido sanitario, riesgo a largo plazo (categoría “discurso preventivo”. Tras discutir los resultados en el contexto de la literatura científica actual, se realizan varias propuestas con el objetivo de aumentar la percepción del riesgo en los adolescentes: incidir con mayor fuerza en contenidos sobre los riesgos a corto plazo del alcohol; orientar las estrategias educativas dirigidas al adolescente, también hacia los agentes de socialización, especialmente los padres; incidir en políticas centradas en la sustancia y en reducir la oferta.

  16. Design of Charge Pump in AM-OLED Driver IC%AM-OLED驱动控制芯片中电荷泵的设计

    Institute of Scientific and Technical Information of China (English)

    周静; 魏廷存

    2014-01-01

    AM-OLED (Active Matrix-Organic Light Emitting Diode) is called the next-generation flat panel display technology .The design of the charge pump is the key point for the design of power supply module in AM-OLED driver IC .The charge pump can be used as a booster or a buck or an inverter of the input voltage ,to supply the operating voltages for other circuit block . After analyzing the function and performance requirements of power supply module in AM-OLED driver IC ,the Verilog-A model and the design of all charge pump module have been completed and they are simulated by HSPICE using 0 .16 μm HV process .%AM-OLED(有源矩阵-有机发光二极管)被称为下一代平板显示技术.在AM-OLED驱动控制芯片的电源电路设计中,电荷泵电路的设计尤为关键.电荷泵的功能是对输入电压按一定倍数进行DC-DC升压、降压和反压,为其他模块提供供电电压.在详细分析AM-OLED驱动控制芯片对电源电路需求的基础上,完成了对电荷泵系统的Verilog-A建模和设计,最后采用0.16μm HV工艺对电路进行了HSPICE仿真验证.

  17. Metas y satisfacción vital en adolescentes españoles y peruanos según sexo y nivel socioeconómico

    Directory of Open Access Journals (Sweden)

    Juan Francisco Díaz Morales

    2013-09-01

    Full Text Available El presente estudio analiza el tipo de metas personales y la satisfacción vital en adolescentes españoles y peruanos según sexo y nivel socioeconómico. Se trabajó con 389 adolescentes españoles y con 285 peruanos, de ambos sexos y de diferentes niveles socioeconómicos. Los instrumentos utilizados fueron el Análisis de Metas Personales de Palys y Little (1983 y la Escala D-T (Delight-Terrible de Andrews y Withey (1976 para la muestra española, y el Método de Inducción Motivacional de Nuttin (1985 junto con la Escala de Satisfacción con la vida de Pavot y Diener (1993 para la muestra peruana, que aunque no son equivalentes, permiten una comparación general. Los resultados muestran importantes semejanzas en las metas descritas  por los adolescentes de ambos estudios, así como en la influencia de la variable sexo. Las principales diferencias entre los adolescentes españoles y peruanos se encuentran en la variable nivel socioeconómico.   This study analyzes the kind of personal goals and life satisfaction levels amongst Spanish and Peruvian adolescents according to their sex and socioeconomic level. 389 Spanish and 285 Peruvian adolescents of both sexes from different socioeconomic level participated in this study. For the Spanish sample Palys and Little's (1983 Personal Goals Analysis and Andrews and Withey's (1976 D-T Scale (Delight-Terrible were used; for the Peruvian sample the measurement instruments were Nuttin's (1985 Motivational lnduction Method along with Pavot and Diener's (1993 Life Satisfaction Scale. Results show significant similarities in the goals described by samples, as well as sex differences and socioeconomic differences.

  18. Dissecting the accountability of parameterized and parameter-free single-hybrid and double-hybrid functionals for photophysical properties of TADF-based OLEDs

    Science.gov (United States)

    Alipour, Mojtaba; Karimi, Niloofar

    2017-06-01

    Organic light emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) emitters are an attractive category of materials that have witnessed a booming development in recent years. In the present contribution, we scrutinize the accountability of parameterized and parameter-free single-hybrid (SH) and double-hybrid (DH) functionals through the two formalisms, full time-dependent density functional theory (TD-DFT) and Tamm-Dancoff approximation (TDA), for the estimation of photophysical properties like absorption energy, emission energy, zero-zero transition energy, and singlet-triplet energy splitting of TADF molecules. According to our detailed analyses on the performance of SHs based on TD-DFT and TDA, the TDA-based parameter-free SH functionals, PBE0 and TPSS0, with one-third of exact-like exchange turned out to be the best performers in comparison to other functionals from various rungs to reproduce the experimental data of the benchmarked set. Such affordable SH approximations can thus be employed to predict and design the TADF molecules with low singlet-triplet energy gaps for OLED applications. From another perspective, considering this point that both the nonlocal exchange and correlation are essential for a more reliable description of large charge-transfer excited states, applicability of the functionals incorporating these terms, namely, parameterized and parameter-free DHs, has also been evaluated. Perusing the role of exact-like exchange, perturbative-like correlation, solvent effects, and other related factors, we find that the parameterized functionals B2π-PLYP and B2GP-PLYP and the parameter-free models PBE-CIDH and PBE-QIDH have respectable performance with respect to others. Lastly, besides the recommendation of reliable computational protocols for the purpose, hopefully this study can pave the way toward further developments of other SHs and DHs for theoretical explorations in the field of OLEDs technology.

  19. Design and Implementation of Wireless OLED Microdisplay System%无线OLED微显示器系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    冉峰; 何林奇; 季渊

    2012-01-01

    According to the problems of LCOS power consumption and the user experience for the existing microdisplay system, what is more, physical wires generally between the image transmitter and microdisplay or the use of the transmission efficiency not high of wireless image transmission protocol and so on, this work adopted the OLED microdisplay and wireless image data transfer protocol based on the non-compressed data WHDI, and used the FPGA EP2C8Q208C8 as the core control device. In the meantime, a host controller and OLED microdisplay driver and control module were designed. Thus the entire wireless OLED micro-display system was designed and the realtime wireless transmission and display of high-definition images were realized.%针对现有微显示器系统采用硅基液晶(LCOS)带来的功耗、用户体验不佳,以及图像发送端和微显示器之间一般通过物理电线连接,或者采用传输效率不高的无线图像传输协议等问题,采用OLED微显示器和基于非压缩数据的无线图像数据传输协议WHDI的无线传输模块,利用FPGA EP2C8Q208C8作为核心控制器件,设计了主控制器以及OLED微显示器的驱动与控制模块,从而完成了整个无线OLED微显示器系统的设计,实现了高清图像的无线实时传输和显示.

  20. Contenidos de estructura atómica en libros de textos españoles de química general (1928-1975)

    OpenAIRE

    González Canle, Felicísimo

    2012-01-01

    En nuestro trabajo, tratamos de hacer una aproximación al modo en que se fueron introduciendo las ideas de la Mecánica Cuántica en los libros de texto españoles tanto de primer curso del nivel universitario como preuniversitarios, en un periodo de tiempo en donde vamos a encontrar superpuestas, en mayor o menor grado dependiendo de los autores, ideas de la nueva teoría con otras ideas clásicas y precuánticas sobre la constitución del átomo. Estudiaremos como se afianzan las diferentes teor...

  1. Bailini, Sonia (2016. La interlengua de lenguas afines. El español de los italianos, el italiano de los españoles. Milano: LED.

    Directory of Open Access Journals (Sweden)

    Floriana di Gesù

    2017-07-01

    Full Text Available El volumen del que se ofrece una reseña analiza el fenómeno de la interlengua de lenguas afines: el español de los aprendientes italianos y el italiano de los aprendientes españoles. El objetivo principal del volumen es el análisis cuantitativo y cualitativo de la interlengua de estas dos tipologías de aprendientes, a través del estudio de dos corpus paralelos y longitudinales.

  2. Inmigración y libre-comercio: ¿qué opinan los españoles y por qué?

    OpenAIRE

    2009-01-01

    España ha sido uno de los destinos preferidos de los emigrantes y ha registrado un claro proceso de apertura comercial. Sin embargo, en el contexto actual de fuerte desempleo, las políticas de inmigración y libre-comercio son cuestionadas. Este trabajo examina la influencia de los factores económicos, culturales y sociales en las opiniones sobre estas facetas de la globalización. Se encuentra que los españoles tienen actitudes más favorables hacia el libre-comercio y más desfavorables hacia l...

  3. Razones para emigrar de los jóvenes españoles: consumo de los medios de comunicación y variables psicosociales

    OpenAIRE

    Gomez Frias, Raquel

    2017-01-01

    El estudio de las migraciones y la movilidad humana es un tema complejo, motivado por un amplio número de razones, que requiere un análisis multidisciplinar para comprender el proceso migratorio y sus consecuencias tanto en la vida del migrante como en la de sus familias. El principal objetivo del presente estudio es 1) conocer la importancia que los jóvenes españoles no emigrantes y emigrantes dan a un amplio número de razones para emigrar junto con 2) la relación que mantienen dichos motivo...

  4. Efectos de la reforma contable en el patrimonio neto consolidado a 1 de enero de 2008 de los grupos españoles que no aplican normativa NIIF

    OpenAIRE

    Javier Legaz Ortiz; Javier Montoya del Corte; Lázaro Rodríguez Ariza

    2015-01-01

    En este trabajo se analiza el efecto de los cambios en las políticas y criterios contables sobre el patrimonio neto consolidado a 1 de enero de 2008 de los grupos españoles, no cotizados, que no aplicaron las NIIF como consecuencia de la adaptación de la normativa contable, instrumentada a través del nuevo PGC y la nota explicativa del ICAC sobre las normas de formulación de cuentas anuales consolidadas. Asimismo, se evalúan los efectos de la transición a la nueva normativa teniendo en cuenta...

  5. Caracter??sticas psicosociales y psicopatol??gicas en una muestra de adolescentes espa??oles a partir del Youth Self-Report/11-18

    OpenAIRE

    2009-01-01

    En este estudio se analizan las competencias psicosociales y caracter??sticas psicopatol??gicas evaluadas por el YSR/11-18 (Achenbach y Rescorla, 2000, 2001) en una muestra de 961 adolescentes espa??oles de 13-18 a??os de edad. Los resultados encontrados indicaron que los varones punt??an de forma elevada en distintas actividades sociales y psicopatolog??a externalizante, mientras que las mujeres presentan mayores puntuaciones en rendimiento en diferentes tareas y sintomatolog??a internalizan...

  6. Lectura y escritura de palabras y pseudopalabras a los seis y siete años en niños españoles

    OpenAIRE

    Gonzalez-Valenzuela, Mª Jose; Lopez Montiel, Mª Dolores; Diaz Giraldez, Felix

    2016-01-01

    El objetivo de este estudio es comparar a los seis y siete años la lectura y la escritura de palabras y pseudopalabras en sujetos españoles. La muestra está formada por 116 alumnos, inicialmente de seis años, pertenecientes a un nivel sociocultural medio, de habla castellana y sin necesidades educativas especiales. Los sujetos fueron evaluados a los seis y siete años en exactitud, velocidad y eficiencia lectora de palabras y pseudopalabras, así como en exactitud escrita de palabras y pesudopa...

  7. Inteligencia Emocional en el Deporte: Validación española del Schutte Self Report Inventory (SSRI) en deportistas españoles

    OpenAIRE

    Ruiz Perez, Luis Miguel

    2013-01-01

    El propósito del estudio fue validar el Inventario de Inteligencia Emocional (SSRI) de Schutte et al. (1998) en una muestra de deportistas españoles de diferente nivel de pericia. Participaron 2091 deportistas (1519 hombres y 572 mujeres) de edades comprendidas entre los 11 y los 59 años (M= 20.8; DT= 6.14). Los resultados de los AFE y AFC mostraron que el cuestionario presenta una estructura de cuatro dimensiones (percepción emocional, gestión auto-emocional, gestión hetero-emocional y ut...

  8. Metabolitos sanguíneos en caprinos alimentados con mezclas integrales frescas con Moringa oleífera: Pennisetum purpureum Clon-OM22

    OpenAIRE

    Nelson Norberto González González; Delfín Gutiérrez González; Roberto García López; Aníbal Fernández Mayer

    2015-01-01

    Se evaluó el comportamiento de metabolitos sanguíneos energéticos y proteicos con el uso de mezclas de Moringa oleífera : Pennisetum purpureum clon OM-22. Se utilizaron cuatro machos caprinos de raza Alpina, con 37.78 ±4.87 kg de peso vivo, dos años de edad y alojados en jaulas metabólicas individuales, or - ganizados en un diseño cuadrado latino (4x4). El tiempo experimental fue 60 días, con cuatro periodos de 15 días. Los tratamientos consistie - ron en la inclusión creciente de ...

  9. Design and Implementation of Project Gantt Chart Based on OLE Technology%基于OLE技术的项目甘特图设计与实现

    Institute of Scientific and Technical Information of China (English)

    肖伟; 赵嵩正

    2003-01-01

    以Oracle为后台数据库管理系统,以PowerBuilder为前端开发工具,利用对象链接与嵌入(OLE)技术,设计与实现了项目甘特图的计算机绘制.该方法弥补了PowerBuilder在图形绘制方面的不足,可广泛应用于工程项目管理信息系统开发中.

  10. La independencia de México y las misiones de las Californias: españoles versus mexicanos, 1821-1833

    Directory of Open Access Journals (Sweden)

    Jesús Ruiz de Gordejuela Urquijo

    2008-11-01

    Full Text Available La secularización de las misiones de las Californias, gobernadas por religiosos dominicos y franciscanos, todos ellos de origen español, fue motivo de preocupación de los distintos gobiernos de la primera república mexicana. A pesar de la creencia generalizada de que fueron las leyes liberales las que hicieron desaparecer las misiones, se demuestra en este trabajo que fue el rechazo de los religiosos mexicanos a cubrir las vacantes dejadas por sus hermanos españoles la causa principal de que finalmente las misiones de las Californias desaparecieran.

  11. Roles y medios de comunicación españoles, un estudio comparativo de tres décadas

    OpenAIRE

    B Gutiérrez San Miguel; ML Ibáñez Martínez; R Carcedo González; L M Bujosa Vadell; M del Pozo Pérez; F Martín Diz

    2014-01-01

    Introducción. Este artículo presenta los resultados parciales de una investigación interdisciplinar consecuencia de un proyecto de innovación subvencionado por la universidad de Salamanca. Objetivos. Los objetivos son la identificación de los roles representados en diversos documentos televisivos españoles de los años 60, 80 y 2000, y el detectar el cambio social de cada época. Metodología. Se utiliza una metodología mixta con la elaboración de una encuesta aplicada a estudiantes y profesore...

  12. Analysis of the current-voltage characteristics of polymer-based organic light-emitting diodes (OLEDs) deposited by spin coating

    OpenAIRE

    Ricardo Vera; Juan Carlos Salcedo-Reyes; Juan Pablo Cuéllar-Alvarado; Diana Rocío Pardo-Pardo; Henry Alberto Méndez-Pinzón; Beynor Antonio Páez-Sierra

    2010-01-01

    Polymer-based organic light-emitting diodes (OLEDs) with the structure ITO / PEDOT:PSS / MDMO-PPV / Metal were prepared by spincoating. It is known that electroluminescence of these devices is strongly dependent on the material used as cathode and on the depositionparameters of the polymer electroluminescent layer MDMO-PPV. Objective. In this work the effect of i) the frequency of the spin coater(1000-8000 rpm), ii) the concentration of the MDMO-PPV: Toluene solution, and iii) the material us...

  13. La intervención de los sindicatos españoles en el sistema de formación continua (1993-2007)

    OpenAIRE

    Rigby, Mike

    2008-01-01

    Este artículo examina la intervención de los sindicatos españoles en formación continua desde 1993. El argumento principal del artículo es que a través de esta intervención, los sindicatos han podido hacer una contribución significativa a la mejora del sistema de formación continua. Se destaca que la participación sindical ha sido determinante en asegurar un aumento y un reparto más igualitario de las oportunidades formativas. Además los sindicatos han podido aprovechar su participación en el...

  14. Perfiles psicológicos vinculados a la ansiedad escénica entre diferentes conservatorios superiores de música españoles

    OpenAIRE

    Francisco Javier Zarza Alzugaray; Óscar Casanova López; Santos Orejudo Hernández

    2016-01-01

    Se expone una investigación que analiza las diferencias encontradas en distintas variables psicológicas y de corte personal en función del centro de estudios al que pertenecen alumnos españoles de Grado Superior de Música. La muestra está compuesta por 482 estudiantes de 5 centros superiores, obtenida a partir de un criterio de disponibilidad muestral. Para la evaluación de los diferentes constructos psicológicos y variables contextuales y pedagógicas, se ha empleado un cuestionario realizado...

  15. EVALUACIÓN DEL ÍNDICE DE ESTABILIDAD OXIDATIVA DEL ACEITE DE MORINGA (Moringa oleífera) POR EL MÉTODO RANCIMAT

    OpenAIRE

    Alberca Tocto, Solansh Kiara; Universidad Señor de Sipán; Huanca Vásquez, Miguel Angel; Universidad Señor de Sipán; Esquivel Paredes|, Lourdes Jossefyne; Universidad Señor de Sipán

    2015-01-01

    La rancidez oxidativa principal causa de la pérdida de calidad de los aceites, ya que se desconoce el tiempo de vida en anaquel de estos productos; la estabilidad (resistencia a la oxidación) es uno de los factores que preocupa a los productores por ser uno de los principales criterios de calidad en aceites y grasas, por ello el objetivo de evaluar índice de estabilidad oxidativa del aceite virgen de las semillas de Moringa oleífera (Humedad 8.54±0.02%), por el método acelerado de rancimat, e...

  16. Adolescentes colombianos y españoles: diferencias, similitudes y relaciones entre la socialización familiar, la autoestima y los valores

    OpenAIRE

    Marisol Lila; Gonzalo Musitu; Sofía Buelga

    2000-01-01

    El objetivo de esta investigación es analizar las relaciones existentes entre los proceses de socialización familiar, valores y autoestima de los adolescentes desde una perspectiva transcultural. La muestra la conforman 706 adolescentes (españoles 424 y colombianos 282) de ambos sexos (382 mujeres y 324 varones), con edades comprendidas entre los 14 y los 18 años. Todos los sujetos eran estudiantes de educación básica secundaria en el período en que se obtuvo la información. Los instrument...

  17. Le statut linguistique des pronoms du créole haïtien et du français : une étude de corpus1

    Directory of Open Access Journals (Sweden)

    Barriere Isabelle

    2016-01-01

    Full Text Available Le statut syntaxique et phonologique des pronoms en créole haïtien et en français a fait l’objet de débats. Les analyses linguistiques classiques du français formulées dans la tradition générative ont proposé une distinction entre les pronoms forts et les pronoms faibles ou ‘clitiques’. Tandis que les pronoms forts se comportent comme des syntagmes nominaux (SN, les clitiques diffèrent de ceux-ci de par leur distribution syntaxique. Ces premières analyses se fondent sur des jugements de grammaticalité et certaines de ces analyses ont été remises en question lorsque des corpus de parole spontanée ont été mis a la disposition des chercheurs et ont permis des analyses quantitatives et phonologiques. La présente étude comparative a pour objectif l’analyse des pronoms personnels du français et du créole haïtien et se fondent sur l’analyse de corpus CHILDES (Demuth & Tremblay, 2008; MacWhinney, 2000 pour le français et un nouveau corpus que nous avons enregistré et transcrit pour le créole haïtien. Les analyses portent sur la distribution syntaxique des pronoms sujets et objets et sur leurs réductions phonologiques. Ces deux sources d’information nous permettent de conclure aux statuts contrastifs des pronoms en créole haïtien qui arborent toutes les caractéristiques des pronoms forts en ce qui concerne leur distribution syntaxique tandis qu’au niveau phonologique ils peuvent être réduits et se comportent donc comme des clitiques phonologiques. En revanche le français comprend des pronoms forts et des pronoms faibles/clitiques qui se distinguent de part leurs trait phonologiques et leur distribution syntaxique.

  18. Representación discursiva y lenguaje de los "youtubers" españoles : estudio de caso de los "gamers" más populares

    OpenAIRE

    Rego Rey, Sandra; Romero Rodríguez, Luis Miguel

    2016-01-01

    Los youtubers se han convertido en ídolos de masas e influencers de millones de personas que siguen sus canales cada día. En este trabajo se analiza de forma exploratoria el discurso, en función de la tipología de lenguaje utilizado en los canales de los tres youtubers españoles con mayor número de suscriptores: El RubiusOMG, TheWIllyRex y Vegetta777. A través de un análisis de contenido de base interpretativa comparativo de una selección de los primeros y últimos vídeos de ...

  19. Prevalencia y tratamiento de las infecciones por grampositivos en los servicios de medicina interna de hospitales españoles: Estudio IGP

    OpenAIRE

    González-Romo, Fernando; Rubio Alonso, Margarita; Betriu, Carmen; Picazo, Juan José

    2003-01-01

    La finalidad de este estudio fue conocer el enfoque terapéutico y la tendencia de las infecciones por grampositivos, en los hospitales españoles, en lo referente a prevalencia, origen, localización y etiología, así como las características de los pacientes, enfermedades de base, gravedad y factores predisponentes. Se compararon, mediante análisis estadístico, los resultados de dos estudios de prevalencia multicéntricos, de 1994-1995 el primero y de 1998 el segundo. Encontramos un descenso est...

  20. Análisis de clúster de la actividad física y las conductas sedentarias de los adolescentes españoles, correlación con la salud biopsicosocial

    OpenAIRE

    Pilar Ramos; Francisco Rivera; Carmen Moreno; Antonia Jim\\u00E9nez-Iglesias

    2012-01-01

    Esta investigación forma parte de la edición 2006 del estudio Health Behavior in School-aged Children (HBSC). Los datos que se presentan constituyen una muestra de 21811 adolescentes españoles de 11 a 18 años. Realizando análisis de clúster, Modelo Lineal General, pruebas de significación y tamaños de efecto, se obtiene información relevante acerca de los hábitos de actividad física y sedentarismo de los adolescentes españoles, evidenciando la situación de riesgo de los adolescentes mayores, ...

  1. Anglicismos en el léxico de las actividades deportivas de los gimnasios españoles

    Directory of Open Access Journals (Sweden)

    María Jesús Rodríguez Medina

    2015-01-01

    Full Text Available ResumenEl objetivo de este trabajo es la recopilación y análisis de los anglicismos más frecuentes en el léxico de las actividades deportivas ofrecidas por los gimnasios españoles, pues se trata de un campo inexplorado en la investigación sobre el anglicismo en la lengua española, que, desde hace años, cuenta con estudios centrados en otros ámbitos del deporte como el fútbol (Fernández1971; Alonso 1996; Rodríguez González 2012. Con tal fin, hemos analizado una muestra de 268 anglicismos detectados en los folletos y webs de 15 gimnasios. Este análisis no solo es cuantitativo, sino que también se describe las distintas funciones pragmáticas de uso, lo que permitirá establecer una serie de conclusiones significativas sobre el grado de madurez del anglicismo en español como fenómeno sociolingüístico y cultural.Palabras clave: anglicismos, léxico, pragmática, deporte AbstractThe aim of this paper is to compile and analyse the most frequent anglicisms in the lexicon used in sports activities offered by Spanish gyms. This domain remains unexplored in the research of the phenomenon of anglicisms in the Spanish language, since the published literature has focused so far on the lexicon of other sports such as football (Fernández 1971; Alonso1996; Rodríguez González 2012. We have studied a sample of 268 anglicisms taken from the brochures and websites of 15 gyms. Our analysis is not only quantitative but also describes different pragmatic functions of the anglicisms found in the data. This allows us to draw significant conclusions about the evolution of anglicisms as a sociolinguistic and cultural phenomenon in Spanish.Keywords: anglicisms, lexicon, pragmatics, sports

  2. La percepción de los periodistas españoles acerca de sus roles profesionales

    Directory of Open Access Journals (Sweden)

    2017-04-01

    Full Text Available La investigación empírica internacional sobre la percepción que los periodistas tienen de sus roles y funciones profesionales presenta un notable auge en los últimos años, aunque no en el caso español. Esta investigación, que forma parte del estudio comparativo transnacional «Worlds of Journalism Study», analiza los datos de una encuesta realizada en España (representativa y estratificada por tipo de medio y por Comunidad Autónoma a 390 periodistas de 117 medios de comunicación, quienes fueron consultados sobre su trabajo para detectar las funciones profesionales con las que más se identificaban. El estudio señala seis roles: el de perro guardián, el altavoz de la ciudadanía, el instructor de la audiencia, el favorecedor del statu quo, el que entretiene a la opinión pública y el difusor de información objetiva. En línea con la evolución política, económica y social de los últimos años en España, los profesionales se identifican más con el papel de altavoz de la ciudadanía. Esta función desplaza en importancia al rol protagonista de los estudios similares más recientes sobre periodistas españoles: el de difusor de la información objetiva. Se hallan también dos grandes grupos de periodistas: los estimuladores y los narcotizadores de la opinión pública. Además, se observa que algunos factores organizacionales (en concreto, la propiedad del medio y otros individuales (el género, la edad y los años de experiencia laboral influyen significativamente en las percepciones de los roles profesionales.

  3. Estrategias de afrontamiento, optimismo y satisfacción con la vida en futbolistas españoles y polacos: un estudio preliminar

    Directory of Open Access Journals (Sweden)

    Enrique Cant\\u00F3n Chirivella

    2013-01-01

    Full Text Available En este trabajo se muestran las relaciones existentes entre las estrategias de afrontamiento, el optimismo disposicional y el bienestar de una muestra de 61 futbolistas de dos nacionalidades, polaca y española, de forma que también pueden observarse diferencias culturales. Los futbolistas españoles obtienen puntuaciones significativamente más altas en la utilización de estrategias de afrontamiento centradas en la emoción (F = 12.919; p = .001 que los polacos, obteniendo un tamaño del efecto relevante (>.130 y una elevada potencia (.942. Además, los futbolistas polacos son significativamente más optimistas que los españoles (F = 5.96; p = .025. Los resultados son discutidos en base a los modelos teóricos del optimismo (Scheier y Carver, 1985 y las estrategias de afrontamiento (Lazarus y Folkman, 1984, resaltando el papel de las diferencias culturales.

  4. Formación universitaria e inserción laboral. Titulados españoles con discapacidad y competencias profesionalizadoras

    Directory of Open Access Journals (Sweden)

    Mariona Dalmau Montalà

    2013-12-01

    Full Text Available La finalidad de este estudio ha sido explorar los puntos fuertes y débiles detectados por los titulados universitarios españoles con discapacidad en su proceso de educación universitaria e inserción en el mercado laboral ordinario, así como la experiencia y la opinión de las empresas en relación a este tema. La metodología utilizada ha sido cuantitativa-cualitativa y descriptiva. La muestra participante se configuró a partir de 687 titulados universitarios españoles con discapacidad, 77 estudiantes universitarios con discapacidad, 19 Servicios universitarios de Apoyo y 16 empresas. Los resultados y las conclusiones nos permiten afirmar que: los titulados universitarios con discapacidad, generalmente, no reciben en la universidad los apoyos adecuados para poder desarrollar, suficientemente, las competencias profesionales; las prácticas profesionalizadoras son una oportunidad para la inserción laboral de los titulados con discapacidad; la discapacidad prevalece por encima de la calidad del currículum vitae en el momento del acceso al mercado laboral ordinario.

  5. Helicenes as All-in-One Organic Materials for Application in OLEDs: Synthesis and Diverse Applications of Carbo- and Aza[5]helical Diamines.

    Science.gov (United States)

    Jhulki, Samik; Mishra, Abhaya Kumar; Chow, Tahsin J; Moorthy, Jarugu Narasimha

    2016-06-27

    A set of eight helical diamines were designed and synthesized to demonstrate their relevance as all-in-one materials for multifarious applications in organic light-emitting diodes (OLEDs), that is, as hole-transporting materials (HTMs), EMs, bifunctional hole transporting + emissive materials, and host materials. Azahelical diamines function very well as HTMs. Indeed, with high Tg values (127-214 °C), they are superior alternatives to popular N,N'-di(1-naphthyl)-N,N'-diphenyl-(1,1'-biphenyl)-4,4'-diamine (NPB). All the helical diamines exhibit emissive properties when employed in nondoped as well as doped devices, the performance characteristics being superior in the latter. One of the carbohelical diamines (CHTPA) serves the dual function of hole transport as well as emission in simple double-layer devices; the efficiencies observed were better by quite some margin than those of other emissive helicenes reported. The twisting endows helical diamines with significantly high triplet energies such that they also function as host materials for red and green phosphors, that is, [Ir(btp)2 acac] (btp=2-(2'-benzothienyl)pyridine; acac=acetylacetonate) and [Ir(ppy)3 ] (ppy=2-phenylpyridine), respectively. The results of device fabrications demonstrate how helicity/ helical scaffold may be diligently exploited to create molecular systems for maneuvering diverse applications in OLEDs.

  6. Investigation on Al(III) and Zn(II) complexes containing a calix[4]arene bearing two 8-oxyquinoline pendant arms used as emitting materials for OLEDs

    Energy Technology Data Exchange (ETDEWEB)

    Bagatin, Izilda A. [Instituto de Quimica, Universidade de Sao Paulo, Cx. P.: 26077, CEP 05513-970, Sao Paulo, SP (Brazil)], E-mail: izildabagatin@yahoo.com.br; Legnani, Cristiano [Divisao de Metrologia em Materiais, Instituto Nacional de Metrologia, Normalizacao e Qualidade Industrial, CEP 25250-020, Duque de Caxias, RJ (Brazil); Cremona, Marco [Divisao de Metrologia em Materiais, Instituto Nacional de Metrologia, Normalizacao e Qualidade Industrial, CEP 25250-020, Duque de Caxias, RJ (Brazil); Pontificia Universidade Catolica do Rio de Janeiro, Depto de Fisica, C.P.38071, Rio de Janeiro (Brazil)

    2009-01-01

    A comparison between [Al{center_dot}1]{sup 3+} and [Zn{center_dot}1]{sup 2+} complexes (1 = 5,11,17,23-tetra-tert-butyl-25,27-bis[(quinoline-8-oxy)propyloxy]-26, 28-dihydroxy-calix[4]arene) has been made using electrochemical techniques and the experimental results obtained in the fabrication of organic light emitting devices (OLEDs). The electrochemically determined values of the ionization potential I{sub p} and electron affinity E{sub a} parameters for the [Al{center_dot}1]{sup 3+} (I{sub p} = 5.82eV, E{sub a} = 2.80eV) and [Zn{center_dot}1]{sup 2+} (I{sub p} = 5.67eV, E{sub a} = 2.32eV) evidenced that the [Al{center_dot}1]{sup 3+} complex is a better electron transporting layer with respect to the Zn complex one. The fabricated OLEDs based on these supramolecular complexes show a superior quality with the [Al{center_dot}1]{sup 3+} systems expected from the energy level diagrams.

  7. Exploiting p-Type Delayed Fluorescence in Hybrid White OLEDs: Breaking the Trade-off between High Device Efficiency and Long Lifetime.

    Science.gov (United States)

    Zhang, Dongdong; Zhang, Deqiang; Duan, Lian

    2016-09-01

    Despite that the majority of practical organic light-emitting diodes (OLEDs) still rely on blue fluorophors with low triplet (T1) for creating blue light, hybrid white OLEDs based on low T1 blue fluorophors are still much lagged behind in power efficiency. Here, "ideal" hybrid WOLEDs with recorded efficiency as well as low roll-off, good color-stability and long lifetime were realized by utilizing the bipolar mixed materials as the host of green phosphor as well as the spacer to reduce T1 trap, while blue fluorophors with p-type delayed fluorescence to recycle the trapped T1. An electron transport material with both high electron mobility and good exciton confinement ability was used to boost the TTA efficiency. Hybrid WOLEDs with maximum current efficiency, external quantum efficiency and power efficiency of 49.6 cd/A, 19.1%, and 49.3 lm/W, respectively, together with a high color rendering index of 80 and a half lifetime of over 7000 h at an initial luminescence of 1000 cd/m(2) were realized, manifesting the high potential of the strategy.

  8. Effect of LiF on Capacitance of OLEDs%LiF作电子注入缓冲层对有机电致发光器件电容的影响

    Institute of Scientific and Technical Information of China (English)

    李颖弢; 刘肃; 王方聪; 张春林; 岳红菊

    2007-01-01

    Numerical methods have been used to analyze the contribution of LiF layer which is inserted between the cathode and the electron-transporting layer in organic light emitting devices (OLEDs). The LiF as the electron injection buffer layer can improve the performance of the OLEDs, including reducing the cut-in voltage, increasing the current and emitting luminance. This work fabricates two different kinds of devices A and B with structures of Indium Tin Oxide (ITO)/tris-(8-hydroxyquinoline) aluminum (Alq3)/Al and ITO/Alq3/LiF/Al, using the C-V characteristic to analyze the roles of LiF in OLEDs and finding the capacitance of the device A and B is 72 500 pF and 12 500 pF, respectively. At the same time, this paper interprets why LiF could reduce the capacitance and the power consumption of the OLEDs from the correct point of view. It shows that the LiF layer improves the performance of the OLEDs and saves the energy sources, resulting in the change of the capacitance of the devices.%已经有多种方法分析了LiF作为电子注入缓冲层对有机电致发光器件的影响,用LiF/Al双层阴极和发光层Alq3制成的有机电致发光器件(OLED), 可以降低器件的开启电压,提高器件的发光效率、发光亮度.文章主要对OLEDs (A): Al/Alq3/ITO和(B): Al /LiF(1nm)/Alq3/ITO的C-V特性进行了研究,当在阴极和发光层Alq3之间加上1 nm厚的LiF层作为电子注入缓冲层以后,器件的电容由不加LiF时的72 500 pF减小到12 500 pF,由于电容的减小,有效地降低了器件的功耗,进而提高了器件的寿命,节约了能源,进一步改善了器件的性能.

  9. Estrategias comunicativas de escritores españoles en Twitter/ Communication strategies of Spanish writers on Twitter

    Directory of Open Access Journals (Sweden)

    Flávia Gomes-Franco e Silva

    2016-01-01

    Full Text Available El modelo comunicativo característico de la web 2.0 ha proporcionado nuevos escaparates institucionales, corporativos y personales basados en la interactividad derivada de las herramientas digitales de carácter social. En un entorno cambiante, es menester revisar las estrategias y tácticas aplicadas a la autopromoción con el propósito de adaptarlas conforme a las posibilidades que ofrecen los canales interactivos. El presente estudio tiene por objeto el análisis de las principales estrategias de comunicación y marketing personal empleadas por los escritores españoles en Twitter. La metodología utilizada comprende un análisis sistemático cuantitativo de los perfiles de una muestra de reconocidos autores con el fin de identificar las principales tácticas empleadas por ellos en la mencionada red social. Los resultados evidencian el interés del colectivo analizado por garantizar su presencia en la web social, incorporando a su rutina la práctica del microblogging. En esta dinámica, se percatan igualmente la construcción de una imagen y una marca personal más cercanas y transparentes que las que suelen ofrecer los canales tradicionales, incidiendo a menudo en los intereses personales de los escritores. Se observa asimismo una autopromoción que camina hacia la horizontalidad pese a que presente aún vestigios de la verticalidad propia de la comunicación tradicionalmente impuesta y unidireccional. The Web 2.0 communication model has provided new institutional, corporate, and personal showcases based on the interactivity that derived from the social character of the digital tools. In a changing environment, it becomes necessary to review the strategies and tactics applied to self-promotion in order to adapt them according to the possibilities offered by interactive channels. This study aims to analyze the main strategies of communication and personal marketing used by Spanish writers on Twitter. The methodology includes a quantitative

  10. Los españoles en los caminos del extremo norte del Perú en 1532

    Directory of Open Access Journals (Sweden)

    1994-01-01

    Full Text Available LES ESPAGNOLS SUR LES CHEMINS DE L'EXTRÊME NORD DU PÉROU EN 1532. À partir des relations des chroniqueurs qui ont accompagné Pizarro de Tumbes à Cajamarca, de la liste des tambos de 1543, des informations sur les caciques de 1548 et de la prospection des sites le long des chemins muletiers de l’extrême nord du Pérou, les routes incas de la côte et de la sierra par lesquelles sont passés les espagnols en 1532 ont été identifiées. On a repéré les centres administratifs et cérémoniels depuis lesquels les incas controlaient les caciques locaux des versants nord-ouest et sud-est des monts Amotape, des vallées du Chira et du Piura, sur la côte, et des hautes terres de Caxas et Huancabamba, ainsi que les tambos situés le long de ces routes. On a pu retrouver les maisons fortifiées et les villages des caciques de Pabur et Serrán dans la vallée du Piura. Finalement on a tenté de délimiter les terres et les canaux d’irrigation qui permettaient la produccion des differents cacicazgos. A partir de las relaciones de los cronistas que acompañaron a Pizarro de Tumbes a Cajamarca, de la lista de los tambos de 1543, de las informaciones sobre los caciques de 1548 y de la prospección de los sitios a lo largo de los caminos de herradura del extremo norte del Perú, se identificaron las rutas incaicas de la costa y de la sierra por las cuales pasaron los españoles en 1532. Se ubicaron los centros administrativos y ceremoniales desde los cuales los incas controlaban los caciques locales de las vertientes noroeste y sureste de los cerros de Amotape, de los valles de los ríos Chira y Piura, en la costa, y los de las serranías de Caxas y Huancabamba, así como los tambos ubicados a lo largo de estas rutas. Se logró encontrar las casas cercadas y los pueblos de los caciques de Pabur y Serrán en el valle del río Piura. Finalmente se intentó deslindar las tierras y los canales de irrigación que permitían la producción de los

  11. Luminescent Di- and Trinuclear Boron Complexes Based on Aromatic Iminopyrrolyl Spacer Ligands: Synthesis, Characterization, and Application in OLEDs.

    Science.gov (United States)

    Suresh, D; Gomes, Clara S B; Lopes, Patrícia S; Figueira, Cláudia A; Ferreira, Bruno; Gomes, Pedro T; Di Paolo, Roberto E; Maçanita, António L; Duarte, M Teresa; Charas, Ana; Morgado, Jorge; Vila-Viçosa, Diogo; Calhorda, Maria José

    2015-06-15

    afford green to yellow emissions. Organic light-emitting diodes (OLEDs) were fabricated by using the new polyboron complexes and their luminance was found to be in the order of 2400 cd m(-2) , for single layer devices, increasing to 4400 cd m(-2) when a hole-transporting layer is used.

  12. Prevalencia de sobrepeso y obesidad en adultos españoles Overweight and obesity among Spanish adults

    Directory of Open Access Journals (Sweden)

    E. Rodríguez-Rodríguez

    2011-04-01

    Full Text Available Objetivo: Evaluar la prevalencia de sobrepeso y obesidad en adultos españoles y comprobar cuál es la situación actual y cómo ha evolucionado en los últimos años. Material y métodos: Se ha estudiado un colectivo de 418 individuos (196 varones y 222 mujeres de 18 a 60 años, que fueron seleccionados para constituir una muestra representativa de la población española en su conjunto. Se han registrado datos sanitarios, socioeconómicos y antropométricos (peso, talla, circunferencia de la cintura y porcentaje de grasa corporal mediante bioimpedancia. Se ha calculado el Índice de Masa Corporal y la relación cintura/altura. Resultados: La prevalencia de sobrepeso en la población fue del 34,2%, siendo mayor en los varones (43,9% que en las mujeres (25,7%; y la de obesidad fue del 13,6%, sin existir diferencias entre sexos. Un 47,8% de la población presentó sobrecarga ponderal y un 70,2% exceso de grasa corporal, siendo mayor en varones que en mujeres y aumentando estos parámetros con la edad. Un 22,2% de la población estudiada presentó obesidad central (tomando como referencia la circunferencia de la cintura y un 54,7% obesidad central y riesgo cardiovascular (al presentar relaciones cintura/altura > 0,5, siendo mayores ambos parámetros en el grupo de los varones. Conclusión: La población española se encuentra en una situación alarmante con respecto al padecimiento de sobrepeso y obesidad, presentando más de la mitad de la población riesgo de padecer enfermedad cardiovascular. Además, la situación ha empeorado con respecto a datos obtenidos en estudios anteriores, por lo que hay que seguir trabajando para disminuir su prevalencia.Aim: to assess the prevalence of overweight and obesity in Spanish adults and to know the current situation and its evolution in the last years. Material and methods: The study involved 418 subjects (196 men and 222 women from 18 to 60 years, who were selected to constitute a representative sample of

  13. Metabolitos sanguíneos en caprinos alimentados con mezclas integrales frescas con Moringa oleífera: Pennisetum purpureum Clon-OM22

    Directory of Open Access Journals (Sweden)

    Nelson Norberto González González

    2015-01-01

    Full Text Available Se evaluó el comportamiento de metabolitos sanguíneos energéticos y proteicos con el uso de mezclas de Moringa oleífera : Pennisetum purpureum clon OM-22. Se utilizaron cuatro machos caprinos de raza Alpina, con 37.78 ±4.87 kg de peso vivo, dos años de edad y alojados en jaulas metabólicas individuales, or - ganizados en un diseño cuadrado latino (4x4. El tiempo experimental fue 60 días, con cuatro periodos de 15 días. Los tratamientos consistie - ron en la inclusión creciente de Moringa oleífera (MO20%, MO40%, MO80% en sustitución de Pennisetum purpureum clon OM-22 (20:80, 40:60; 80:20% en la mezcla integral y un testigo, al que se le ofertó concentrado comer - cial (6g kg PV -1 . La totalidad de los forrajes frescos fueron cosechados, molidos (3-5cm y mezclados, ofertados a razón del 3% del peso vivo base seca, en dos ocasiones (10:30-16:30 horas durante el día. El estado de los metaboli - tos sanguíneo fue evaluado 22 horas posteriores al consumo de alimento. Las concentraciones de Glucosa, Colesterol, Triglicéridos y Urea se mantuvieron dentro del rango fisiológico. Los valores de Urea y Colesterol mostraron una ten - dencia creciente con la moringa en la mezcla, a diferencia de los Triglicéridos, que disminu - yeron. Los niveles de Creatinina en MO40 y MO80% superaron el límite fisiológico para la especie (59.7-134.8 μmol/l, indicando un posible fallo renal. Estos resultados permiten concluir que la Moringa oleífera con un nivel de inclusión del 20% constituye una alternativa alimentaria para caprinos; pero requiere de es - tudios para dilucidar niveles de Creatinina con la inclusión de 40 y 80% moringa.

  14. Adicción a internet y móvil : una revisión de estudios empíricos españoles

    OpenAIRE

    Sánchez Carbonell, Xavier; Fúster, Héctor; Chamarro Lusar, Andrés; Oberst, Ursula

    2012-01-01

    Determinar los factores que diferencian el uso de Internet y móvil saludable del patológico. Método: Se revisaron doce estudios empíricos publicados por investigadores españoles sobre adicción a Internet y teléfono móvil entre 2002 y 2011, obtenidos a partir de una búsqueda en PsycINFO y en Psicodoc. Resultados y Discusión: Se observó una relación entre el uso problemático de Internet y diversos trastornos psicológicos y entre el uso problemático y el tiempo conectado. La comunicación alterad...

  15. Calidad y características de los sitios web de los hospitales españoles de gran tamaño

    Directory of Open Access Journals (Sweden)

    Calvo-Calvo, Manuel Ángel

    2014-03-01

    Full Text Available The objective is to assess the quality and describe characteristics of websites of large Spanish hospitals, i.e. minimum 500 beds. Cross-sectional descriptive study is made, to evaluate the global quality, accessibility, usability, interactivity, updating, quality model and information given in 53 different websites belonging to Spanish hospitals with more than 500 beds. Only 22 (41.5% of the websites analyzed fall into the upper half of the scale used. As such, the mean quality of these websites is shown to be low. On one hand, both accessibility and usability of the evaluated websites were notable, with specific sections for health professionals and hospital suppliers. On the other, the websites were characterized by a limited incorporation of tools for interacting with users, a poor presentation of information about health, diseases, waiting lists and care activities, as well as a deficient updating of their content and almost no adherence to quality references. In short, the websites of large Spanish hospitals are simple informational spaces that don’t facilitate the interaction, participation and collaboration of hospital users. In conclusion, websites of large Spanish hospitals, in addition to being informative spaces, should facilitate more interaction, participation and collaboration with hospital users.El objetivo es evaluar la calidad y describir las características de los sitios web de los hospitales españoles con más de 500 camas. Estudio descriptivo, observacional, de corte transversal, que evalúa la calidad de 53 sitios web de hospitales españoles con más de 500 camas. Se analizan la accesibilidad, usabilidad, interactividad, actualización de la información, referentes de calidad y contenidos presentados en los sitios web. Sólo 22 (41,5% de las webs estudiadas superaron la mitad de los puntos posibles. Por tanto, como media, la calidad de las webs de los grandes hospitales españoles analizados es baja. Las webs

  16. Los artículos lexicográficos de zoónimos en diccionarios españoles de lengua general

    OpenAIRE

    Borràs Dalmau, Laura

    2004-01-01

    En esta tesis se analiza una muestra de las definiciones de zoónimos en diccionarios españoles de prestigio para avanzar en la realización de uno o varios prototipos de definición que faciliten el trabajo al lexicógrafo en este campo. Asimismo, previo al análisis se ha realizado un compendio teórico que recoge las perspectivas de las disciplinas implicadas en el problema de la definición de los zoónimos en los diccionarios de lengua (Semántica, Lexicografía, Filosofía del lenguaje, así como A...

  17. Análisis de la fuerza isométrica en trampolinistas españoles de distintas categorías competitivas

    OpenAIRE

    Luis Arturo Gómez-Landero Rodríguez; Jesús López Bedoya; Mercedes Vernetta Santana; Michel Marina Evrad

    2015-01-01

    Introducción: Debido a la ausencia de trabajos que describan y analicen el perfil de fuerza isométrica en Trampolín y su relación con el rendimiento deportivo, se plantea un estudio transversal, comparativo y correlacional en esta línea con trampolinistas españoles. Método: Muestra compuesta por 60 trampolinistas de élite nacional, agrupados por categoría competitiva en 4 grupos: 1) Sub-15 masculino (n = 23; 11,95 ± 1,79 años), 2) Sub-15 femenino (n = 9; 11,44 ± 1,23 años), 3) Absoluto mascul...

  18. Compétences bilingues français/créole chez des enfants de 5 ans en contexte martiniquais

    OpenAIRE

    Genelot, Sophie; Négro, Isabelle; Peslages, Dominique

    2006-01-01

    06073; Ce texte présente une partie des résultats issus d'une recherche à évaluer les compétences langagières d'enfants martiniquais de 5 ans dans leurs deux langues, le français et le créole, à l'entrée du second cycle de l'école primaire. L'objectif général de cette étude est de déterminer l'influence respective de ces compétences langagières sur les acquisitions en lecture au cours du cycle 2. Nous nous proposons ici d'exposer certaines données qui permettent d'interroger quelques représen...

  19. Pautas para el análisis de la cohesión y la coherencia en textos españoles

    OpenAIRE

    Esparza-Torres,M.Á. (Miguel Ángel)

    2006-01-01

    El objeto de estas páginas es proponer unas pautas para el análisis en textos españoles de la cohesión y la coherencia, aplicables a la práctica docente, y facilitar una información convenientemente actualizada y lo más integradora posible, que ayude a organizar la abundante bibliografía disponible. Como punto de partida, se abordan las consecuencias que tiene concebir el texto como unidad de análisis lingüístico. En segundo lugar, se sitúa del modo más esquemático posible el lugar que ocupan...

  20. Comparison study of transparent RF-sputtered ITO/AZO and ITO/ZnO bilayers for near UV-OLED applications

    Science.gov (United States)

    Rezaie, Mahdiyar Nouri; Manavizadeh, Negin; Abadi, Ehsan Mohammadi Nasr; Nadimi, Ebrahim; Boroumand, Farhad Akbari

    2017-01-01

    Hybrid inorganic/organic light-emitting diodes have attracted much attention in the field of luminescent electronics due to the desired incorporation of high optoelectronic features of inorganic materials with the processability and variety of organic polymers. To generate and emit a near ultraviolet (N-UV) ray, wide band gap semiconductors can be applied in the organic light-emitting diodes (OLEDs). In this paper, zinc oxide (ZnO) and aluminum-doped ZnO (AZO) thin films are deposited by radio frequency (RF) sputtering above the ITO electrode and poly [2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene-vinylene] (MEH-PPV) conjugated polymer is utilized as a complementary p-type semiconductor in OLED structure. The impact of ZnO and AZO thickness on the structural, electrical, optical and morphological properties of ITO/AZO and ITO/ZnO bilayers are scrutinized and compared. Results show that with the enlargement of both ZnO and AZO film thickness, the physical properties are gradually improved resulting in the better quality of transparent conducting thin film. The average electrical resistivity of 8.4 × 10-4 and 1.1 × 10-3 Ω-cm, average sheet resistance of 32.9 and 42.3 Ω/sq, average transmittance of 88.3 and 87.3% and average FOM of 1.0 × 104 and 7.4 × 103 (Ω-cm)-1 are obtained for ITO/AZO and ITO/ZnO bilayers, respectively. Moreover, comparing the results indicates that the strain and the stress within the ITO/AZO bilayer are decreased nearly 19% with respect to ITO/ZnO bilayer which yield higher quality of crystal. Consequently, the physical properties of ITO/AZO bilayer is found to be superior regarding ITO/ZnO bilayer. For fabricated UV-OLEDs, the turn-on voltages, the characteristic energy (Et) and the total concentration of traps (Nt) for the devices with the structures of ITO/ZnO/MEH-PPV/Al and ITO/AZO/MEH-PPV/Al are obtained 12 and 14 V, 0.108 and 0.191 eV, 9.33 × 1016 and 5.22 × 1016 cm-3, respectively. Furthermore, according to the electroluminescence

  1. Representantes españoles en el imperio Otomano, entre la diplomacia, la crónica y la literatura (1864-1886

    Directory of Open Access Journals (Sweden)

    Martín Asuero, Pablo

    2005-04-01

    Full Text Available Se puede encontrar un cierto interés en el Mediterráneo oriental en España a partir de 1860. Una prueba de ello es la producción textual de varios diplomáticos españoles destinados en el imperio Otomano a través de las crónicas periodísticas y de la publicación de sus memorias las cuales se acercan a la literatura de viajeros. Adolfo de Mentaberry, Diego de Codio de Portugal, Antonio Bernal de O'Reilly o Manuel Quintana son un ejemplo de este tipo de diplomático de ideología liberal que transmitieron a los lectores del mundo en español la situación del imperio Otomano entre los años de 1864 y 1886.…

  2. Colegiales y burócratas. El caso del Colegio de San Clemente de los españoles de Bolonia en la primera mitad del S. XVI

    Directory of Open Access Journals (Sweden)

    Baltasar CUART MONER

    2009-12-01

    Full Text Available Este trabajo tiene por objeto determinar y estudiar la extracción social de una élite, la que formaban los colegiales mayores de San Clemente de los Españoles de Bolonia, durante los primeros sesenta años del s. XVI. Por otra parte, además, vamos a intentar explicar de qué manera y a través de qué mecanismos dichos colegiales se incrustan en la máquina burocrática estatal o de la Iglesia, razón que constituía su último objetivo a fin de mantenerse en un plano social elevado o, en su caso, ascender a él, y gozar de las cotas de poder que consiguientemente y en una sociedad de Antiguo Régimen era inherentes a ello.

  3. MATLAB analysis and computation of OLED charge injection model%OLED器件电荷注入模型的MATLAB分析计算

    Institute of Scientific and Technical Information of China (English)

    王忆锋; 唐利斌; 岳清

    2011-01-01

    The model of charge injection from a metallic electrode of organic light emitting diodes(OLED) into a random hopping system,e. g. ,a conjugated polymer or a molecularly doped polymer,is presented in this paper. It encompasses injection of a charge carrier from the Fermi level of the electrode into tail states of the distribution of hopping states of the dielectric followed by either return of the charge cartier to the electrode or diffusive escape from the attractive image potential. The latter process resembles Onsager-type geminate pair dissociation in one dimension. The model treats the injection current as a function of electric field,temperature and energetic width of the distribution of hopping states. The concept of relative current density of OLED device is proposed. The methods and skills of analysis and computation of the model with MATLAB is introduced.%介绍了电荷从OLED金属电极注入到一个随机跳跃体系(例如配对聚合物或分子掺杂聚合物)的模型.它包括电荷载流子从电极的费米能级到介质跳跃态分布尾态之间的注入,其结果可能是电荷载流子返回到电极,或者是受到镜像引力势的作用而形成扩散逃逸.后者类似于一维Onsager型激子解离.该模型将注入电流处理为电场、温度以及跳跃态分布能量宽度的函数.提出了OLED器件中相对电流密度的概念.介绍了用MATLAB软件分析计算该模型的方法和技巧.

  4. Los periodistas españoles y la pérdida de la calidad de la información: el juicio profesional

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    Juan Francisco Gutiérrez Lozano

    2015-07-01

    Full Text Available Este artículo expone los resultados de una investigación acerca del modo en el que los periodistas españoles en ejercicio enjuician la calidad periodística y cómo esta se ve afectada por el contexto económico, tecnológico, empresarial, laboral y profesional actual del periodismo. El texto recoge los resultados de una encuesta en la que participan 363 periodistas españoles con al menos tres años de experiencia en medios de comunicación. Sus respuestas aluden, entre otros aspectos, a las reflexiones acerca de la estructura y el comportamiento de las empresas informativas, así como las características predominantes de la información periodística en la actualidad. En particular, el artículo se centra en exponer las consideraciones de los periodistas acerca del cuidado o esmero de su labor profesional. Entre los principales resultados destaca que el 81% de los encuestados reconoce un empeoramiento de los patrones de calidad del producto periodístico, que ligan a la crisis del sector. Entre las posibles causas se mencionan la falta de independencia económica y política de los medios, la falta de inversión empresarial y los problemas derivados de los cambios tecnológicos, todo ello en un contexto de precarización del mercado laboral periodístico. El artículo vincula estos resultados a otros estudios internacionales que han abordado, de manera sistemática, la calidad periodística, aportando por primera vez en el contexto académico español una perspectiva de la cuestión a partir de los propios profesionales.

  5. Una aproximación a las actitudes políticas de los españoles mediante una estructura dimensional inductiva

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    Araceli Mateos-Díaz

    2010-03-01

    Full Text Available Las investigaciones que analizan las actitudes políticas en España se han caracterizado fundamentalmente por tener un enfoque descriptivo, aunque algunas de ellas han intentado buscar explicaciones al tipo de actitudes en los acontecimientos y en el desarrollo histórico político del país.  Los indicadores actitudinales utilizado en este trabajo intentan medir y estructurar las actitudes y percepciones políticas de los españoles. Debido a que no es un análisis longitudinal no se puede hablar en sentido estricto de una estructura dimensional de la cultura política. El uso de cada uno de estos indicadores está justificado,  si bien no se establece una clasificación  de los mismos  en  las dimensiones  originales señaladas por Almond y Verba, y que la mayoría de los autores han utilizado: cognitivas, afectivas y evaluativas. El objeto de este trabajo es plantear una crítica a dicha clasificación  y proponer un modelo para la distribución  de tales indicadores actitudinales en dimensiones  de acuerdo con los indicadores manejados en cada caso. Para descubrir la estructura dimensional de las orientaciones o actitudes políticas de los españoles  se  han  creado  índices  de  medición  que permiten conocer la relación entre los indicadores utilizados en un análisis factorial. Finalmente, se describe cada una de las dimensiones extraídas del análisis y se debate sobre la coherencia de las relaciones entre las actitudes incluidas en cada una de ellas.

  6. Sobre Gaspar Becerra en Roma. La capilla de Constantino del Castillo en la iglesia de Santiago de los Españoles

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    Redín Michaus, Gonzalo

    2002-06-01

    Full Text Available Until now, Gaspar Becerra's stay in Rome was documented only thanks to his recorded presence at the San Lucas meetings of 1544 and 1550, and the execution of a monstrance for the church of Saint James of the Spaniards between 1550 and 1551. By December 1557 the Andalucian artist was in Burgos, thereby indicating that he spent at least thirteen years in the Eternal City. Here, the author presents the contract between Becerra and Constantino del Castillo for his chapel, today destroyed, in the church of Saint James of the Spaniards. In reconstructing and analyzing this chapel. Becerra's formation and style are clarified, as are his contacts with the artist from Piacenza, Giulio Mazzoni who, as demonstrated by a document, terminated the chapel.

    Poco es lo que se sabe sobre la estancia de Gaspar Becerra en Roma, que hasta ahora se documentaba gracias a su presencia en las reuniones de la congregación de San Lucas, primero en 1544 y luego en 1550, y a la realización, entre este último año y 1551, de una custodia para la iglesia de Santiago de los Españoles. Ya en diciembre de 1557 el andaluz se encontraba en Burgos, por lo que pasó al menos trece años trabajando en la ciudad eterna. Aportamos aquí el contrato que Gaspar Becerra acordó con Constantino del Castillo para realizar su capilla, hoy destruida, en la iglesia de Santiago de los Españoles, cuya reconstrucción y análisis nos permiten concretar la formación y el estilo del andaluz, así como sus conexiones con el artista piacentino Giulio Mazzoni, quien, como corrobora un documento que aquí presentamos, acabó la capilla empezada por Becerra.

  7. Cobertura y desamparo: garantías jurídicas de los españoles en el Perú (1870-1945

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    Sala i Vila, Núria

    2009-06-01

    Full Text Available The archives of the Prefecture of the Peruvian Ministry of Foreign Affairs provide a perspective from which to reconstruct the broad range of legal circumstances in which Spanish residents in various regions of the country find themselves immersed (assets of relatives who have died without wills or family in Peru, political conflicts, legal problems — whether criminal or civil as a result of business activities— or the requested intervention of consular authorities when decisions considered detrimental to their compatriots are made by prefects and sub-prefects. The legal framework protecting Spanish nationals in Peru is analysed to understand the mechanisms of immigration in the country and the mechanisms that led them to keep their Spanish nationality, even after establishing wide-reaching family and business interests.

    Los fondos de Prefectura del Ministerio de Relaciones Exteriores del Perú son un mirador para reconstruir la amplia casuística legal en la que se verán inmersos españoles residentes en las distintas regiones del país —bienes de difuntos intestados o sin familia en el Perú, conflictos políticos, problemas legales, fueran penales o de litigio en razón de sus actividades comerciales…— o de las gestiones de las autoridades consulares en solicitud de amparo ante decisiones de prefectos o subprefectos consideradas lesivas a sus connacionales. Se analiza el entramado legal que protegía a los españoles en el Perú, para comprender tanto los mecanismos de integración en el país, como aquellos que les llevaron a mantener la nacionalidad española, aún cuando hubieran tejido amplios intereses familiares y de negocios.

  8. Studies on high power ultrasonic microembossing and organic light emitting diodes (OLEDs) for the creation of lab-on-CD devices for sensor related applications

    Science.gov (United States)

    Vengasandra, Srikanth G.

    This study demonstrates the application of High Power Ultrasonic Microembossing Technology (HPUMT) in producing microfeatures on polymer substrates. The work reviews a novel method of obtaining flash free and precise microfeatures by manipulating the material density through microcellular foaming. The microfeatures created on the polymer substrates were further characterized by analyzing the feature depth with respect to the critical ultrasonic embossing operating parameters such as embossing heating times (s), embossing amplitude (microm) at a constant embossing trigger force (N). An experiment design was constructed and performed to characterize the parameters on foamed and unfoamed (or regular) versions of polystyrene (PS) and polypropylene (PP) sample materials. Results indicated feature depth was proportional to heating times, amplitude and force. It was also seen the maximum depth was achieved in the shortest cycle times with higher amplitudes and forces of operation. HPUMT was further studied to create functional network of microchannels functioned as reservoirs, reaction chamber and burst or gate valves to form a centrifugal biosensing platform that is also referred to as a lab-on-CD or a bio-CD device. The surface energy of the polymer substrates was increased to enable fluid flow by using a surfactant based organic coating to facilitate hydrophilicity. Using an organic light emitting diode (OLEDs) as an electroluminescence source provided luminescence decay results in good agreement with stern-volmer relationship. The functionality of the OLED-coupled lab-on-CD device was further tested in measuring unknown concentrations of a particular analyte in corn slurry sample which contained numerous contaminants. Combinatorial multianalyte sensing was also made possible on a single bio-CD using a four photodetector (PD) quad preamp disk sensor.

  9. Ejemplos de represión contra comunistas españoles y franceses en 1939 en el centro-oeste de Francia (departamento de la Haute-Vienne

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    Eva Leger

    2010-11-01

    Full Text Available La Haute-Vienne acogió en febrero de 1939 a más de 2.700 civiles españoles refugiados en Francia. Se trata de un departamento esencialmente rural, excepto la capital, conocida por su tradición obrera muy fuerte. Esta tierra fue bastante hospitalaria para los españoles, a pesar de los ataques de la prensa de derecha, entreteniendo el mito del “rojo” español. Entonces, los refugiados fueron objeto de una estricta vigilancia por parte del Estado francés (gobierno Daladier. Se impidió todo tipo de contacto entre los comunistas españoles y franceses, en un contexto de repatriaciones, a veces forzadas, hacia la España franquista. En este artículo, me propongo presentar algunos casos de represión contra los españoles y contra los comunistas, a partir de informes policiales o prefectorales de la Haute-Vienne.Palabras Claves: memoria histórica; exilio; republicanos; Francia; Guerra Civil española___________________________ABSTRACT:In February 1939, Haute-Vienne department accommodated more than 2700 spanish civilians’ refugees.  This department is mainly rural except the capital where there is a strong working class tradition. This land was in general welcoming for refugees, in spite of the attacks of conservative press, which maintained the myth of the “red spanish”. Thus, Spanish refugees were under a strong surveillance by the French state (the Daladier’s government. Any contact between Spanish communists and French was avoided, in a context of repatriation, sometimes forced, back to pro-Franco Spain. This article will present some cases of repression against Spanish and communists that appear in reports from the police and the prefecture of the Haute-Vienne.Keywords: France, Spanish Civil War, exile, historical memory

  10. ¿Qué trabajos ocupan quienes abandonan el desempleo? Diferencias entre españoles y extranjeros en un contexto de cambio económico

    Directory of Open Access Journals (Sweden)

    Muñoz Comet, Jacobo

    2014-08-01

    Full Text Available This article studies the occupational attainment of those who leave unemployment. Specifically, the paper addresses the factors that explain initial differences found between foreigners and Spaniards, and examines the extent to which the economic context reduces or increases the gap between those groups. In order to do so, panel data from the Spanish Labour Force Survey from 2005 until 2010 are used. The logistic regression analyses show that, while it is important to consider various socio-demographic factors, the type of occupation in which people worked before becoming unemployed has a remarkable influence on the skill-level of subsequent jobs. Even after controlling for all relevant variables, it remains more likely for foreigners from outside EU15 to occupy the lowest positions in the labor market, regardless of the state of the economy. With regard to the risk of falling into a lower occupation relative to the last one, this is equal for all national groups in gross terms, but not when taking into account socio-demographic variables and the professional status of workers before the spent in unemployment.En este artículo se estudia el acceso a la ocupación para aquellos que logran salir del desempleo. En concreto, se pretende conocer qué factores explican las diferencias iniciales halladas entre extranjeros y españoles y, al mismo tiempo, averiguar en qué medida la coyuntura económica reduce o incrementa la brecha inicial entre ambos colectivos. Para ello se han utilizado los ficheros de flujos de la Encuesta de Población Activa desde 2005 hasta 2010. Los análisis de regresión logística muestran que la ocupación en la que se trabajó por última vez tiene una influencia notable. No obstante, una vez controladas todas las variables del estudio, los extranjeros de la UE15 continúan teniendo mayor probabilidad que los españoles de escapar del desempleo a costa de ocupar las posiciones más bajas del sistema productivo, con

  11. TIPOLOGÍA Y GRADO DE PREJUICIO DE UN GRUPO DE ESPAÑOLES HACIA EL COLECTIVO COLOMBIANO. UNA LECTURA CON PERSPECTIVA DE GÉNERO

    Directory of Open Access Journals (Sweden)

    Daniela Herrera Rubalcaba

    2015-06-01

    Full Text Available La presente investigación identifi ca la tipología y el grado de prejuicio que un grupo de españoles, residente en la provincia de Almería (España, presenta hacia el colectivo de inmigrantes colombianos. Para recabar la información se contactó a 16 mujeres y 14 hombres que respondían a la escala de Pettigrew y Meertens (1995, adaptada por Rueda; Navas y Gómez (1995 y Rueda y Navas (1996. En una lectura con perspectiva de género de las respuestas se observa que, en este contexto de migración y multiculturalidad, más de la mitad de mujeres y hombres del total de participantes se presenta en la misma proporción como personas “igualitarias”. El resto, seis españolas y cuatro españoles, presentan prejuicio sutil hacia el colectivo colombiano. En esta investigación ni mujeres ni hombres se pueden identifi car como “fanáticos”. Los resultados se discuten en relación con los encontrados en otras investigaciones. AbstractThis research paper aims to identify typology and prejudice based on information using a group of Spanish people who live in Almería (Spain, in relation to a group of Colombian immigrants. In order to support this information, sixteen women and fourteen men who responded to Pettigrew & Meertens Scale (1995, and adapted by Rueda et al. (1995 and Rueda & Navas (1996, were used as a sample. The answers, based on gender perspective, showed that more than half of the total men and women are presented in the same proportion as “egalitarian”. The rest of the people, six Spanish males and four Spanish females, presented subtle prejudice towards Colombians. So, in this research project neither women, nor men can be identifi ed as “fanatic”. The results also are controversial in relation with the ones found in other studies.

  12. Effect of the substituents on the photophysical, electrochemical and electroluminescence properties of OLED dopant Iridium bis(2-phenylbenzothiozolato- N,C2')(acetylacetonate)

    Science.gov (United States)

    Ivanov, P.; Tomova, R.; Petrova, P.

    2014-12-01

    The effect of two substituents: clorine and 1,3-diphenylpropane-1,3-dionate, placed on different position in the molecule of Iridium (III) bis(2-phenylbenzothiozolato-N,C2')- (acetylacetonate) (bt)2Ir(acac), on its electrochemical behaviour, photophysical and electroluminescence properties were investigated. Three complexes (bt)2Ir(acac), Iridium (III) bis[2-(4-chlorophenyl)benzothiazolato-N,C2']-acetylacetonate (Clbt)2Ir(acac), in which the Cl atom was introduced on the 4-position in the benzothiazole ring, and the new Iridium (Ill) bis[2 -phenylbenzothiazolato -N,C2'] -(1,3 -diphenylpropane-1,3 -dionate) (bt)2Ir(dbm), where ancillary acetylacetonate ligand was replaced by 1,3-diphenylpropane-1,3-dionate, were synthesized and characterised by 1H-NMR and elemental analysis. The HOMO/LUMO energy levels of the complexes were determined by cyclic voltammetry (CV) and their properties were established by UV-Visible and fluorescence spectroscopy. The application of (Clbt)2Ir(acac), (bt)2Ir(bsm) and (bt)2Ir(acac) as dopants in hole transporting layer (HTL) of Organic light- emitting diodes(OLEDs). It was found that with respect to the reference (bt)2Ir(acac): both LUMO and HOMO of the substituted complexes were shifted to more positive values accordingly with 0.23 and 0.19 eV for (Clbt)2Ir(acac) and 0.14 and 0.12 eV for (bt)2Ir(dbm). OLEDs doped with 1 w% of the complexes irradiated the warm white light with Commission internationale de l'eclairage (CIE) coordinates: 0.24;0.38 for (Clbt)2Ir(acac), 0.30;0.44 for (bt)2Ir(acac) and 0.28;0.46 for (bt)2Ir(dbm). Devices doped with 10 w% of all complexes irradiated in the yellow orange region of the spectrum.

  13. Características de 107 registros sanitarios españoles y valoración de su utilización (parte a

    Directory of Open Access Journals (Sweden)

    Iñaki Imaz Iglesia

    2005-01-01

    Full Text Available Fundamento: La información sobre los registros sanitarios existentes en nuestro país es poco accesible y escasa y algunos son poco conocidos, pudiendo estar infrautilizados en relación con sus múltiples usos potenciales. El objetivo de este trabajo es evaluar las características de los Registros Sanitarios españoles y su utilización, especialmente en Evaluación de Tecnologías Sanitarias. Métodos: Estudio descriptivo transversal de los Registros Sanitarios españoles entre 1997 y 2002. La identificación de los registros se realizó a través de búsqueda bibliográfica y mediante encuesta a Sociedades Científicas y Administración sanitaria central y autonómica. Se ha realizado una búsqueda bibliográfica específica de las publicaciones que utilizan datos de los registros sanitarios incluidos y se han evaluado aplicando los criterios de calidad de la evidencia científica. Resultados: Se han identificado 107 registros sanitarios, preferentemente de cobertura local o regional (71% y dependientes en su mayoría de la Administración autonómica (64,5%. Las áreas con mayor número de registros identificados corresponden a la mortalidad (16,8% y al cáncer (15,9%. Se han recuperado 298 publicaciones que analizan datos producidos por los registros identificados, de las que la mayoría se dedican al estudio de la frecuencia y distribución de los eventos registrados (58,1% y con menor frecuencia a la realización de estudios de evaluación de tecnologías sanitarias (24,4%. Conclusiones: La evaluación crítica de las publicaciones ha permitido identificar algunos elementos relacionados con el diseño y la metodología de análisis que incrementarían la calidad de los estudios de evaluación de tecnologías sanitarias.Los registros sanitarios en España han tenido un desarrollo desigual y reciente. Se han detectado áreas relevantes sin registros y elementos de mejora relacionados con la utilización de los registros sanitarios para

  14. Características de 107 registros sanitarios españoles y valoración de su utilización (parte b

    Directory of Open Access Journals (Sweden)

    Iñaki Imaz

    2005-01-01

    Full Text Available Fundamento: La información sobre los registros sanitarios existentes en nuestro país es poco accesible y escasa y algunos son poco conocidos, pudiendo estar infrautilizados en relación con sus múltiples usos potenciales. El objetivo de este trabajo es evaluar las características de los Registros Sanitarios españoles y su utilización, especialmente en Evaluación de Tecnologías Sanitarias. Métodos: Estudio descriptivo transversal de los Registros Sanitarios españoles entre 1997 y 2002. La identificación de los registros se realizó a través de búsqueda bibliográfica y mediante encuesta a Sociedades Científicas y Administración sanitaria central y autonómica. Se ha realizado una búsqueda bibliográfica específica de las publicaciones que utilizan datos de los registros sanitarios incluidos y se han evaluado aplicando los criterios de calidad de la evidencia científica. Resultados: Se han identificado 107 registros sanitarios, preferentemente de cobertura local o regional (71% y dependientes en su mayoría de la Administración autonómica (64,5%. Las áreas con mayor número de registros identificados corresponden a la mortalidad (16,8% y al cáncer (15,9%. Se han recuperado 298 publicaciones que analizan datos producidos por los registros identificados, de las que la mayoría se dedican al estudio de la frecuencia y distribución de los eventos registrados (58,1% y con menor frecuencia a la realización de estudios de evaluación de tecnologías sanitarias (24,4%. Conclusiones: La evaluación crítica de las publicaciones ha permitido identificar algunos elementos relacionados con el diseño y la metodología de análisis que incrementarían la calidad de los estudios de evaluación de tecnologías sanitarias.Los registros sanitarios en España han tenido un desarrollo desigual y reciente. Se han detectado áreas relevantes sin registros y elementos de mejora relacionados con la utilización de los registros sanitarios para

  15. La literatura como fuente de la historia : los republicanos españoles en los campos de concentración

    Directory of Open Access Journals (Sweden)

    José Rodríguez Richart

    1999-01-01

    Full Text Available Al terminar en 1939 la Guerra Civil española, centenares de miles de republicanos se refugiaron en Francia, muchos de ellos lucharon después contra las tropas de ocupación nazis y contra el régimen de Vichy, muchos de ellos fueron detenidos y deportados a campos de concentración alemanes (caso de Max Aub, internado en Le Vernet primero y en Djelfa en Argelia después. Como hicieron otros republicanos españoles en esas circunstancias, Semprún reconstruyó su permanencia en Buchenwaid en varios de sus libros pero especialmente en Aquel domingo con el propósito de transmitir un testimonio histórico de la lucha contra el nazismo y de los horrores increíbles de esos campos a las nuevas generaciones. Max Aub, por su parte, también ha descrito en varias de sus obras sus atroces experiencias tanto en Le Vernet como en Djelfa, pero de forma especial en Diario de Djelfa, campo equiparable a los peores de exterminio nazi. Esas dos obras de Semprún y de Aub son una contribución de indudable valor histórico para reconstruir las inimaginables experiencias de los republicanos españoles en los campos de concentración de Alemania y Francia.At the end of the Spainsh Civil War in 1939, hundreds of thousands of republicans fled to France, many of them later fought against the nazi occupation forces and the Vichy regime, many of them were arrested and deported to German concentration camps (as was the case of Jorge Semprún, who was taken to Buchenwaid or French internment camps (such as Max Aub, who was internad first at Le Vernet and later at Djelfa, Algeria. Like other republicans who lived through the same circumstances, Semprún revived the time he had to spent in Buchenwaid in several of his books, but especially in Aquel domingo with the aim of bearing testimony to the new generations of the struggle against nazism and the incredible horrors committed in those camps. Max Aub has described in several of his works the terrible experiencias he

  16. Otredad y ambigüedad: las percepciones que los españoles y los mayas tenían de los africanos en el Yucatán colonial

    Directory of Open Access Journals (Sweden)

    Matthew Restall

    2000-01-01

    Full Text Available Este articulo estudia las actitudes de mayas y espaiíoles hacia las personas de ascendencia africana en Yucatán durante la época colonial. A lo largo de los tres siglos de dominio colonial en esta provincia, las relaciones entre españoles, mayas y negrós se hicieron progresivamente complejas, en tanto que el proceso de miceginación provccó que hubiera más mulatos que negros a finales del periodo colonial y que aumentara la interacción entre negros y mayas, tanto en poblados como en ciudades. A su vez, las actitudes de espaiioles y mayas hacia los africanos se hicieron también más complejas. Este artículo sostiene que dicha complejidad se manifestó como una ambigüedad que a un mismo tiempo perpetuó los estereotipos racistas y reconoció la pertenencia de las personas de ascendencia africana a las redes sociales multiraciales de la colonia. En otras palabras, los negros eran incluidos y excluidos, tanto por los españoles como por los mayas, lo que se manifestó en la formación de las identidades afroyucatecas

  17. 半导体量子点集成有机发光二极管的光光转换器进展%Progress of Infrared Light-Visible Light Converter Integrated Semiconducting Quantum Dots with OLED

    Institute of Scientific and Technical Information of China (English)

    杨宇; 靳映霞; 王登科; 杨杰; 王茺; 吕正红

    2013-01-01

    介绍的光光转换器是新型红外光-可见光转换器件,红外光产生的光生载流子直接注入有机发光二极管产生可见光。以半导体红外探测与有机发光器件单片集成的光光转换器,直接实现了红外光到可见光的集成转换,在红外凝视技术中有极大的应用潜力。综述了无机红外探测与有机发光的光-光转换器的研究进展。%Infrared Light-Visible Light(IRL-VSL)converter is a new type of optical conversion device which converts infrared(IR)light generated photo-carriers in detection materials and then injects these carriers into organic light emitting diode(OLED)to emit visible light. The OLED is monolithically integrated onto the semiconducting IR detector and thus this IR light-visible light converter is compact and can be potentially used in IR imaging application. The research progress of integrating inorganic IR detector into organic OLED are reviewed in this paper.

  18. North Germany is gaining ground in solar power generation; Der Norden holt beim Sonnenstrom auf

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2011-10-15

    In 2010, the North German states of Brandenburg and Schleswig-Holstein took second and third place in the construction of new solar systems. Bavaria is still leading. The capacity increase in the solar sector substitutes one nuclear power station.

  19. RSI in forest-machine operators in Scandinavia; Belastningsskador bland skogsmaskinfoerare i Norden

    Energy Technology Data Exchange (ETDEWEB)

    Eriksson, Goeran

    1995-08-01

    Repetitive stress (or strain) injury (RSI) is a widespread complaint among forest-machine operators. The most common complaints are those afflicting the neck and shoulders as a result of muscular tension due to sustained, intensive and repetitive operation of the machine`s controls. Muscular tension leads to reduced circulation which, in turn, gives rise to chemical and physiological disorders in the muscle cells. RSI not only causes considerable personal suffering but can also be costly to the afflicted individuals, their employers and to society. Despite the substantial ergonomic improvements that have been made to forest machinery, the percentage of operators suffering from RSI has not declined. The ergonomic standard of cab design and controls on farm tractors used in forestry, however, is still very poor, although the risk of RSI on tractor drivers is offset by the fact that they work much shorter hours than the operator of forest machines. Action taken to stimulate the circulation of blood through the muscles reduces the risk of RSI among operators. However, if real and lasting progress is to be made, a comprehensive programme of technological, organizational and personal measures needs to be established. This report describes the extent, causes and consequences of RSI and also highlights some of the measures that can be taken to prevent it. Refs, 12 figs, 1 tab

  20. Was den polnischen Klempner in den Norden lockt. Zur heutigen Arbeitsmigration nach Norwegen und Schweden

    Directory of Open Access Journals (Sweden)

    Joanna Miszczuk

    2010-12-01

    Full Text Available In the course of the negotiations about the Eastern enlargement of the EU in 2004, objections were raised against the immediate enforcement of unrestricted freedom of movement of labour forces because of the possible destabilizing effects this could have on the labour markets as well as the welfare systems of the Western European member states. In order to avoid these effects, the vast majority of the member states reacted by introducing temporary arrangements and other regulations. A comparison made between the liberal policy of Sweden which did not introduce any regulations and the more restrictive case of Norway shows that the feared effects did not set in. The actual extent of migration depends foremost on the demand for labour force in the receiving countries. Regulations are leading to the search for alternative strategies in order to circumvent the existing restrictions.

  1. Entreprenørskab og vækst blandt akademikere i Norden

    DEFF Research Database (Denmark)

    Mønsted, Mette; Edqvist, Charles; Gabrielsson, Jonas;

    on more than four years of university study. In Sweden we define a tertiary education as three years of university study or more than three years. The university studies vary depending on the study subject. In order to be able to compare the data from the three countries we use the definition four years...

  2. Ulykker og ulykkesdødsfald i Danmark - en sammenligning med Norden og EU

    DEFF Research Database (Denmark)

    Hansen, T B; Röck, N D; Poulstrup, A;

    1994-01-01

    increase in the incidence of accidental poisoning with medical drugs and alcohol during the period was found to be a factor contributing to the poorer Danish statistics during the period. In the subcategory, death after a fall, there was an increase in incidence among the elderly, but the loss of life...

  3. OBTENÇÃO DO BIODIESEL ATRAVÉS DA TRANSESTERIFICAÇÃO DO ÓLEO DE Moringa Oleífera Lam

    Directory of Open Access Journals (Sweden)

    Daniele Silva Oliveira

    2012-03-01

    Full Text Available A Moringa Oleífera Lam é uma oleaginosa que tem um grande potencial para a produção de bicombustível no semi-árido nordestino, uma vez que se adapta a várias condições climáticas. A semente produz entre 35 % a 40 % de óleo. O objetivo desse trabalho foi obter o biodiesel através do processo de transesterificação e caracterizar as propriedades físico-químicas do óleo e biodiesel de acordo com as normas estabelecidas pela ANP. O biodiesel foi produzido pela rota metílica com o catalisador KOH. Os resultados mostraram que a semente de moringa produz óleo em boa quantidade com características físico-químicas adequadas para ser usado como matéria prima na transesterificação para obtenção de biodiesel. O teor de óleo médio encontrado para as sementes de moringa foi de 40 %, fornecendo rendimento de 83,68% em biodiesel e conversão dos ácidos graxos em ésteres metílicos de 99,9 %.

  4. Cooperación territorial internacional y desarrollo local: el caso de Canelones (Uruguay con los territorios españoles

    Directory of Open Access Journals (Sweden)

    Adrián Rodríguez Miranda

    2015-01-01

    Full Text Available Se analiza la cooperación entre territorios españoles (fundamentalmente las islas Canarias y la Diputación de Barcelona con Canelones, Uruguay, entre 2005 y 2010. Las fuentes de información refieren a entrevistas en profundidad, una encuesta a actores clave y documentación revisada. El objetivo es contribuir a la comprensión de las motivaciones y fundamentos de la cooperación entre estos territorios, para luego analizar las ventajas y oportunidades que presenta para promover procesos de desarrollo local y regional. El trabajo argumenta que el principal valor agregado de la cooperación territorial no se vincula con los apoyos en infraestructuras ni los montos monetarios recibidos, sino que radica en la generación de activos intangibles para el desarrollo. Por ejemplo, el aprendizaje conjunto, el intercambio de experiencias y la transferencia de conocimientos específicos sobre cómo actuar y responder ante desafíos similares.

  5. «Extranjeros perniciosos». Infractores y delincuentes españoles en la ciudad de México (1910-1936

    Directory of Open Access Journals (Sweden)

    Gil Lázaro, Alicia

    2003-08-01

    Full Text Available This article studies a sector of the Spanish immigrants who lived in Mexico City during the Mexican revolution and the first two post-revolutionary decades. It focuses on every-day life through the analysis of their illegal and violent behavior within their homes, workplace and recreational spaces, as well as on the common crimes (against property, etc. they committed. Mexican authorities labeled them as «pernicious» foreigners.

    Este artículo trata de acercarse a las vidas de un grupo de inmigrantes españoles en la Ciudad de México durante la revolución mexicana y las primeras décadas posrevolucionarias. La mirada se centra en sus comportamientos delictivos que incluyen actitudes violentas en ámbitos domésticos, de trabajo y de ocio y recreación y también delitos contra la propiedad y otros. Las autoridades mexicanas los calificaron en la época como «extranjeros perniciosos».

  6. Turismo de eventos: los cruceros españoles en la inauguración del canal de suez de 1869

    Directory of Open Access Journals (Sweden)

    Gaetano Cerchiello

    2015-01-01

    Full Text Available El 17 de noviembre de 1869 tuvo lugar el solemne acto de inauguración del Canal de Suez. Largamente celebrado por los medios de información, el histórico acontecimiento atrajo visitantes de toda Europa, generando asimismo la promoción de varios viajes organizados. Tras una breve introducción sobre los principales hechos que condujeron a la apertura de la nueva ruta marítima, este artículo se ocupa de dos singulares proyectos de cruceros turísticos españoles, en una época en la que los viajes de recreo al extranjero, y el turismo en general, sólo proliferaban entre las élites foráneas. Su estudio ayuda a esclarecer, por otra parte, algunos rasgos diferenciales de las primeras experiencias crucerísticas en España, que habían empezado a llevarse a cabo desde mediados del siglo XIX.

  7. La competencia digital de los políticos españoles en Twitter. El caso de las elecciones europeas de 2014

    Directory of Open Access Journals (Sweden)

    Roberto Gelado Marcos

    2017-07-01

    Full Text Available Twitter se ha convertido en un controvertido objeto de debate en varios aspectos de la vida pública. Sin embargo, antes de plantearnos la educación mediática que eclosiones como la de Twitter requiere de una ciudadanía que ve la oportunidad de sumergirse de nuevo en profundidad en la esfera pública, cabe preguntarse si actores de suma importancia en ella como los políticos entienden bien estas nuevas posibilidades de comunicación con sus gobernados. Este artículo pretende contribuir a el debate entre quienes defienden el potencial de la red de microblogging y quienes constatan, en cambio, que los actores que la utilizan no están exprimiendo tal potencial. Para ello, hemos analizado el uso que de Twitter se hizo por parte de los líderes políticos españoles más significativos durante las Elecciones Europeas de 2014, combinando a tal fin metodologías cuantitativas y cualitativas que permitan un análisis más profundo de sus discursos y su comprensión de la herramienta.

  8. El peso de la ley: la política hacia los españoles en la independencia del Perú

    Directory of Open Access Journals (Sweden)

    Ascensión Martínez Riaza

    2015-11-01

    Full Text Available La llegada de San Martín al Perú, septiembre de 1820, provocó el desconcierto entre la población local. En Lima se transformó en miedo cuando el virrey La Serna abandonó la capital. Iniciaba para los españoles un tortuoso proceso de connamiento, emigración, expulsión y secuestro de bienes que se extendió por el territorio a medida que era controlado por las fuerzas patriotas. En este contexto, el artículo analiza la política de los distintos gobiernos independientes a través del estudio del marco legislativo, las instancias que intervinieron y los mecanismos con los que se aplicó la normativa. Se hace un estudio comparativo entre distintas etapas: desde la conciliación inicial de San Martín hasta las medidas de Bolívar después de la capitulación de Ayacucho.

  9. Literatura e identidad. Experiencias de lectura literaria en la infancia y adolescencia de cinco escritores españoles contemporáneos

    Directory of Open Access Journals (Sweden)

    Marta Sanjuán Álvarez

    2017-05-01

    Full Text Available El propósito de este trabajo es reflexionar sobre la educación literaria desde la perspectiva de la relación entre literatura y vida. En estos momentos de crisis de las humanidades, creemos necesario reivindicar de nuevo el insustituible papel de la literatura en la formación de los niños y adolescentes. Para valorar el poder transformador de la literatura y las dimensiones vitales de la experiencia de la lectura literaria en los estadios tempranos de la construcción de la identidad, se exploran cinco textos autobiográficos de cinco escritores españoles contemporáneos como fuente de información introspectiva y retrospectiva, en una línea de investigación etnográfica. En estos lectores las excepcionales experiencias lectoras vividas se suman a una capacidad expresiva igualmente excepcional para comunicar lo que esa relación intensa con la literatura ha representado en su trayectoria vital y en su construcción como sujetos.

  10. De coyotes y gallinas: Hispanidad, identidad nacional y comunidad política durante la expulsión de españoles

    Directory of Open Access Journals (Sweden)

    Pani, Erika

    2003-08-01

    Full Text Available This article explores one of the most contentious moments in the struggle to redefine political community during the early independence period in Mexico: the 1827 expulsion of Spaniards, through the analysis of parliamentary debates and pamphleteer literature. It tries to uncover the borders that, according to the contenders, were to define the new national community, and the place within it of the «gachupines», now considered by some to be strangers.

    Este artículo explora uno de los momentos más candentes de las pugnas por redefinir la comunidad política durante los primeros años del México independiente: la expulsión de españoles de 1827, a partir del análisis de los discursos parlamentario y panfletario en la ciudad de México. Se trata de descubrir las fronteras que, según los contendientes, debían contener a la nueva comunidad nacional, y el lugar que, dentro de ésta, debían tener los «gachupines», ahora considerados, por algunos, como extraños.

  11. Los estudios en los seminarios españoles del siglo XIX. El ejemplo de la diócesis compostelana

    Directory of Open Access Journals (Sweden)

    Vázquez Vilanova, José Antonio

    2002-06-01

    Full Text Available Taking the seminar of Santiago as the pattern, firstly I have tried to establish the main guidelines followed for the training of the Spanish seminarists during the 19th century. In order to do so, besides indicating the evolution brought about and the changes formed by the apparition of the seminar on the previous system, other questions have also been tackled, such as the way studies are structured, taught subjects, ideological orientations, or the methodology used. At the same time, the application and improvement level shown by the students has been taken into account both by the exams'results and by the academic years involved and the grades obtained.

    Tomando el Seminario de Santiago como modelo, he tratado primeramente de establecer cuáles fueron las principales pautas seguidas para la formación de los seminaristas españoles durante el siglo XIX. Para ello, además de indicar la evolución que respecto al sistema anterior supuso la aparición del seminario, se han abordado cuestiones referidas a la estructura de los estudios, asignaturas impartidas, orientaciones ideológicas o metodología empleada. Por su parte, el nivel de aplicación y aprovechamiento mostrado por los alumnos ha sido abordado tanto por los resultados de los exámenes como por los años cursados y calificaciones obtenidas.

  12. Perfeccionismo y factores de riesgo para el desarrollo de trastornos alimentarios en adolescentes españoles de ambos géneros

    Directory of Open Access Journals (Sweden)

    Lidia Pamies

    2014-05-01

    Full Text Available El objetivo de este trabajo fue evaluar las dimensiones del perfeccionismo que estaban relacionadas con conductas alimentarias de riesgo en adolescentes españoles de ambos géneros, así como analizar si existían diferencias significativas en estas dimensiones entre los adolescentes con mayor y menor riesgo de desarrollar un trastorno de la conducta alimentaria. Método: se administró la adaptación española de The Child and Adolescent Perfectionism Scale (CAPS y el EAT- 40 a una muestra representativa de 2142 adolescentes de la provincia de Alicante(1130 chicas y 1012 chicos, con una media de edad de 13.96 años (DT = 1.34. Resultados: el perfeccionismo auto-orientado y el prescrito socialmente estaban relacionados de forma positiva con la puntuación total en el EAT-40 y los diferentes factores que lo componen, en ambos géneros. Los adolescentes con mayor riesgo de desarrollar un trastorno alimentario presentaban un mayor perfeccionismo auto-orientado y prescrito socialmente que los adolescentes con menor riesgo de desarrollar el problema. Conclusión: Estos resultados sugieren la necesidad de identificar estas tendencias perfeccionistas en los adolescentes antes de que se conviertan en conductas patológicas, como un medio para prevenir el desarrollo de un trastorno alimentario.

  13. Por daños y perjuicios: reclamaciones de españoles en el Perú, siglos XIX-XX

    Directory of Open Access Journals (Sweden)

    Martínez Riaza, Ascensión

    2009-06-01

    Full Text Available In the second half of the 19th century Spanish residents in Peru managed to get wealthy and integrated in the economic power circles. They were traders and owners seeking profit through speculation in guano fertilizer, saltpeter and finance. They were affected by internal instability and the war with Chile, so that their expectations were not met and they made claims individually and collectively before Peruvian and Chilean authorities. As a last resort they used mediation by the Spanish government through its diplomatic representation in Lima. The article recovers especially significant cases of this claiming process.

    A lo largo de la segunda mitad del siglo XIX españoles residentes en el Perú lograron hacer fortuna y se integraron en los circuitos de poder económico. Comerciantes y propietarios, buscando beneficios, entraron en actividades especulativas en relación con el guano, el salitre y las finanzas. Afectados por la inestabilidad interna y por la guerra con Chile, no vieron cumplidas sus expectativas y reclamaron individual y colectivamente ante instancias peruanas y chilenas. Como último recurso acudieron a la mediación del gobierno español a través de la representación diplomática en Lima. El artículo rescata casos especialmente significativos.

  14. Condiciones de confort en el proyecto en forma gráfica para diferentes ambientes y climas españoles

    Directory of Open Access Journals (Sweden)

    Rubio Requena, Pedro María

    1988-12-01

    Full Text Available Here we are given the graphic version of a piece of research, which also involves analytical calculation, on conditions of «comfort» to be established in various atmospheres used, assigned and occupied in different ways and located in the various temperate climates of Spain. A study is made of the seasonal adaptation/acclimatization of people, proposing normal standards of «comfort» for each case. Finally, the work includes a brief selection of graphic examples of «comfort» areas showing seasonal variation and specific variation for certain premises.

    Se presenta la versión gráfica de un trabajo de investigación, que también aborda el cálculo analítico sobre condiciones de «comfort» a establecer en distintos ambientes con diferente uso, destino y ocupación y situados en los diferentes climas templados españoles. Se estudia la adaptación/aclimatización de tipo estacional de las personas y se proponen valores de confort normales para cada caso. Se incluye, por último, una breve muestra gráfica seleccionada de zonas de confort con variación estacional y específica para algunos locales edificatorios.

  15. Shedding light on the photophysical properties of newly designed platinum(II) complexes by adding substituents on functionalized ligands as highly efficient OLED emitters from a theoretical viewpoint

    Energy Technology Data Exchange (ETDEWEB)

    Li, Jieqiong [Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004 (China); Wang, Li, E-mail: chemwangl@henu.edu.cn [Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004 (China); Wang, Xin [Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004 (China); He, Chaozheng, E-mail: hecz2013@nynu.edu.cn [College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061 (China); Zhang, Jinglai, E-mail: zhangjinglai@henu.edu.cn [Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004 (China)

    2015-08-01

    The phosphorescent properties of three synthesized and three new designed platinum(II) complexes are focused on in this work. To reveal their structure–property relationships, a density functional theory/time-dependent density functional theory (DFT/TDDFT) investigation is performed on the geometric and electronic structures, absorption and emission spectra. The electroluminescent (EL) properties are evaluated by the ionization potential (IP), electron affinity (EA), and reorganization energy (λ). Furthermore, the radiative rate constant (k{sub r}) is qualitatively elucidated by various factors including the strength of the SOC interaction between the higher-lying singlet excited states (S{sub n}) and the T{sub 1} state, the oscillator strength (f) of the S{sub n} states that can couple with the T{sub 1} state, and the energy separation between the coupled states. A combined analysis of various elements that could affect the phosphorescent efficiency is beneficial to exploring efficient triplet phosphors in OLEDs. Consequently, complexes Pt-1 and 1 would be more suitable blue-emitting phosphorescent materials with balance of EL properties and acceptable quantum yields. - Graphical abstract: Display Omitted - Highlights: • The absorption and phosphorescence spectra of Pt(II) complexes are investigated. • Their Φ{sub em}, IP, EA, and reorganization energy are compared. • Three new Pt(II) complexes are designed.

  16. El camino a la narración. El grupo Laboratorio Teatro Settimo y su presencia en los escenarios españoles

    Directory of Open Access Journals (Sweden)

    Juan Pérez Andrés

    2016-01-01

    Full Text Available El grupo Laboratorio Teatro Settimo es una de las compañías más interesantes del panorama italiano de las últimas tres décadas, gracias sobre todo a la calidad y variedad de sus espectáculos colectivos, así como a la decisiva influencia que han tenido las obras de narración solista realizadas por algunos de sus miembros (entre otros, Marco Paolini, Laura Curino, Gabriele Vacis o Roberto Tarasco en la configuración del movimiento conocido como teatro di narrazione, en cuya aparición y reconocimiento por parte del público el grupo turinés ha desempeñado un papel fundamental. El presente texto se propone ofrecer un breve recorrido por las fases más significativas de la evolución de sus espectáculos abarcando desde sus primeras obras hasta la posterior concepción de un teatro basado en un único actor-performer en la escena, al tiempo que trazar un perfil de su presencia en los teatros españoles y su recepción crítica.

  17. Percepciones de los Profesores de Historia chilenos y españoles acerca del estudio de la Transición de la Dictadura a la Democracia.

    Directory of Open Access Journals (Sweden)

    David Aceituno Silva

    2011-06-01

    Full Text Available En este artículo presentamos los resultados iniciales del estudio sobre el profesorado del Proyecto (I+D+I TRADDEC, una investigación financiada por el Ministerio de Ciencia e Innovación de España, cuyo objetivo es constatar si los “Procesos de Transición” de España y Chile están puestos suficientemente en valor en los respectivos sistemas educativos. Los resultados que se presentan corresponden a la fase experimental de la investigación, realizada a través de una entrevista semiestructurada para profesores chilenos y españoles de educación secundaria. En estos se da cuenta de una profunda valoración por parte de los docentes de la enseñanza de la transición en el aula y sus posibilidades educativas para el desarrollo de competencias ciudadanas. Sin embargo, señalan los obstáculos que encuentran en el currículum para desarrollarlo, en especial desde el punto de vista del tiempo asignado a la temática.

  18. Conducta prosocial y estrategias de aprendizaje en una muestra de estudiantes españoles de Educación Secundaria Obligatoria

    Directory of Open Access Journals (Sweden)

    Cándido J. Inglés

    2013-06-01

    Full Text Available Este estudio analizó la relación entre conducta prosocial y las estrategias de aprendizaje en una muestra de 2022 estudiantes españoles (51.1% varones de Educación Secundaria Obligatoria (ESO. La conducta prosocial fue medida con la escala de Conducta Prosocial del Teenage Inventory of Social Skills (TISS y las estrategias de aprendizaje fueron medidas con el Learning and Study Strategies Inventory-High School (LASSI-HS. Los análisis de regresión logística revelaron que la conducta prosocial es un predictor positivo y estadísticamente significativo de puntuaciones altas en las siguientes estrategias y habilidades de estudio: actitud hacia el éxito académico, motivación, procesamiento de la información, selección de ideas principales, ayudas al estudio, autoevaluación y estrategias de evaluación. Además, la conducta prosocial fue un predictor negativo y estadísticamente significativo de puntuaciones altas en ansiedad. Estos resultados fueron encontrados en varones, mujeres y en estudiantes de todos los cursos de ESO. Sin embargo, la conducta prosocial sólo fue un predictor positivo y estadísticamente significativo de altas puntuaciones en control del tiempo (en las muestras de 2o y 4o de ESO y en concentración (en las muestras de chicos y 4o de ESO.

  19. Adolescentes colombianos y españoles: diferencias, similitudes y relaciones entre la socialización familiar, la autoestima y los valores

    Directory of Open Access Journals (Sweden)

    Marisol Lila

    2000-01-01

    Full Text Available El objetivo de esta investigación es analizar las relaciones existentes entre los proceses de socialización familiar, valores y autoestima de los adolescentes desde una perspectiva transcultural. La muestra la conforman 706 adolescentes (españoles 424 y colombianos 282 de ambos sexos (382 mujeres y 324 varones, con edades comprendidas entre los 14 y los 18 años. Todos los sujetos eran estudiantes de educación básica secundaria en el período en que se obtuvo la información. Los instrumentos han sido la Escala de Socialización Familiar SOC30, la Escala de Autoestima AUT30 y dos escalas ~Escala de Valores Terminales y Escala de Valores Instrumentales-e- obtenidas a partir del Rokeach Survey Values (Rokeach, 1973. Se han realizado diversos análisis correlacionales, así como un análisis discriminante en función de la variable cultura. Los resultados muestran la existencia de algunas diferencias significativas en función del ámbito culturalal que pertenece el adolescente, tales como una mayor autoestima física y académica, mayor percepción de castigo y mayores puntuaciones en valores de complacencia por parte de los adolescentes colombianos. Por último, se subraya la necesidad de investigar en profundidad la incidencia que el contexto sociocultural tiene en la socialización familiar; autoestima y valores.

  20. El mercado de trabajo de los diplomados españoles en biblioteconomía y documentación

    Directory of Open Access Journals (Sweden)

    Antonio Moreiro, José

    1995-12-01

    Full Text Available Analysis of the job market for those who gratuated in Library and Information Science in the academic year 1991-92. The survey has been based on data collected by means of a questionnaire sent to the forementioned graduates in 1993. It provides information concerning current levels of employment, employment status, job description, contractual commitments and a description of the various employers. The final part of the article consists of the opinions of those polled concerning their particular employment and the profession in general.

    Se analiza el mercado de trabajo de los diplomados españoles en Biblioteconomía y Documentación de la promoción 1991-1992. El estudio se basa en los datos recogidos a través de un cuestionario enviado a los diplomados a finales de 1993. Se ofrece información sobre los índices de empleo, las categorías profesionales de los puestos que ocupan, las funciones desarrolladas en ellos, la relación contractual que mantienen con la institución contratante, así como el tipo de centros en los que trabajan. La última parte del artículo recoge las opiniones que los propios encuestados tienen de la profesión y de su realidad laboral.

  1. Correlation between airborne Olea europaea pollen concentrations and levels of the major allergen Ole e 1 in Córdoba, Spain, 2012-2014

    Science.gov (United States)

    Plaza, M. P.; Alcázar, P.; Galán, C.

    2016-12-01

    Olea europaea L. pollen is the second-largest cause of pollinosis in the southern Iberian Peninsula. Airborne-pollen monitoring networks provide essential data on pollen dynamics over a given study area. Recent research, however, has shown that airborne pollen levels alone do not always provide a clear indicator of actual exposure to aeroallergens. This study sought to evaluate correlations between airborne concentrations of olive pollen and Ole e 1 allergen levels in Córdoba (southern Spain), in order to determine whether atmospheric pollen concentrations alone are sufficient to chart changes in hay fever symptoms. The influence of major weather-related variables on local airborne pollen and allergen levels was also examined. Monitoring was carried out from 2012 to 2014. Pollen sampling was performed using a Hirst-type sampler, following the protocol recommended by the Spanish Aerobiology Network. A multi-vial cyclone sampler was used to collect aeroallergens, and allergenic particles were quantified by ELISA assay. Significant positive correlations were found between daily airborne allergen levels and atmospheric pollen concentrations, although there were occasions when allergen was detected before and after the pollen season and in the absence of airborne pollen. The correlation between the two was irregular, and pollen potency displayed year-on-year variations and did not necessarily match pollen-season-intensity.

  2. Conducta sexual segura y hábitos de salud en jóvenes españoles de 14 a 24 años

    Directory of Open Access Journals (Sweden)

    José María Faílde Garrido

    2014-12-01

    Full Text Available Los jóvenes son un colectivo de especial importancia para la prevención de enfermedades de transmisión sexual y para la promoción de la salud en general, por ello resulta de interés estudiar las causas y determinantes de sus conductas de salud. El objetivo de esta investigación consistió en estudiar el grado de relación existente entre la conducta de uso del preservativo y otros hábitos de salud, en jóvenes españoles de 14 a 24 años. La muestra estuvo formada por 2171 jóvenes de las comunidades autónomas de Galicia, Andalucía y Madrid. Los resultados indican la existencia de diferencias estadísticamente significativas en función del género. En general las chicas presentan hábitos más saludables, a excepción de la práctica deportiva y el uso sistemático del preservativo masculino. Asimismo, las variables práctica deportiva e higiene buco-dental se muestran como predictores confiables de la conducta de usar el preservativo.

  3. Representación social de "los argentinos", "los españoles", "los latinoamericanos" y "los europeos" en estudiantes universitarios argentinos

    Directory of Open Access Journals (Sweden)

    Néstor Daniel Roselli

    2000-01-01

    Full Text Available El objetivo de la investigación es descriptivo: producir una caracterización de cómo los estudiantes universitarios argentinos definen subjetivamente a los referidos grupos nacionales ("los "los argentinos", "los españoles" y supranacionales, "los latinoamericanos" y "los europeos". Sin embargo, no esun mero estudio de estereotipos nacionales. La originalidad consiste en el encuadre metodológico, propio de análisis de las representaciones sociales. Se basa en un análisis estadístico de asociaciones libres de palabras. Este análisis tiene tres partes. La primera, es un análisis de frecuencias de las categorías semánticas más frecuentes, respetando las palabras originales. En una segunda parte, se aplica la técnica del análisis de correspondencias múltiples (derivación del análisis factorial, extrayéndose los dos factores principales de cada grupo nacional. Finalmente, se aplica la técnica de clusters, agrupando a los participantes de la muestra en grupos o clases homogéneas. El análisis incluyó además ciertos cruces con variables asociadas: grado de identificación con los grupos, evaluación positiva o negativa de las características asignadas, y grado de facilidad de caracterización de cada grupo.

  4. Evidencia empírica de los economistas españoles tras 5 años de aplicación de la reforma contable

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    Salvador Marín Hernández

    2015-01-01

    Full Text Available Transcurridos 5 años desde la aplicación efectiva de la reforma contable en España, con el presente trabajo se ha buscado mostrar la opinión de los «Economistas Expertos en Contabilidad e Información Financiera» (ECIFCGE sobre diversas cuestiones relacionadas con la misma. Para ello se ha utilizado una base empírica obtenida de sendas encuestas realizadas en 2008, 2009 y, la última, a finales del año 2012. De forma general se concluye que los economistas españoles, de este ámbito de la profesión, tienen un amplio conocimiento de la normativa que emana de la reforma contable; que este ha aumentado y/o se ha consolidado con el paso del tiempo; que las complicaciones han disminuido con el transcurso del mismo, que ven ahora con menos distancia la adaptación y el uso de las NIC/NIIF, y que su dominio ha aumentado con el grado de conocimiento y formación. De forma específica siguen ocupando mayor dedicación las áreas de patrimonio neto, valoración de activos y pasivos financieros, derivados, grupos 8 y 9, partes vinculadas y resultados extraordinarios, pero con valores medios en disminución por cada año transcurrido.

  5. El tratamiento de la información en los diarios españoles. El País y El Mundo ante la Ley del Cine

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    María Ganzábal

    2008-01-01

    Full Text Available La todavía pendiente tramitación parlamentaria de la Ley del Cine en España es la base de este artículo. Un largo y costoso proyecto de ley que ha llevado a la confrontación y al enfrentamiento ideológico de los dos principales diarios españoles, El País y El Mundo. Encontramos un exceso de información, considerada casi siempre como relevante, pero que no concuerda con las necesidades e intereses de la opinión pública (que poco o nada sabe del tema, sino con unos intereses partidistas, empresariales y políticos de los propios diarios y de los grupos empresariales que están detrás de ellos. El País ofrece una visión gubernamental y "oficial" del proyecto donde se recoge la posición de uno de los sectores más favorecidos por la nueva ley como son los productores. El Mundo, por su parte, acoge en sus páginas la opinión del sector más controvertido y crítico con este proyecto como son los distribuidores, exhibidores y, sobre todo, las televisiones.

  6. MgF2/Se薄膜封装层对OLED性能及寿命的影响%Influence of MgF2/Se film encapsulation layer on performance and lifetime of OLED

    Institute of Scientific and Technical Information of China (English)

    高淑雅; 吕磊; 孔祥朝; 陈维铅; 张方辉

    2013-01-01

    有机电致发光器件(OLEDs)在使用过程中,易受到空气中水汽、氧气及其它污染物的影响从而导致其工作寿命降低.本文将具有良好光透过率和热稳定性的MgF2薄膜与在水汽和氧气中具有良好稳定性的Se薄膜通过真空蒸镀制成复合薄膜作为OLEDs的封装层,以达到提高器件使用寿命的目的.器件各功能层蒸镀完成后,保持真空度(3×10-4 Pa)不变,在阴极表面蒸镀MgF2/Se薄膜封装层.比较了绿光OLED器件(器件结构为ITO/CuPc/NPB/Alq3:C-545T/Alq3/LiF/A1)封装前后的亮度-电压-电流密度特性、电致发光光谱及寿命.研究发现,经过MgF2/Se封装后,器件的电流密度-电压特性、亮度和发光光谱几乎没有受到影响,二者的光谱峰都在528 nm处,色坐标(CIE)分别为(0.355 5,0.6131)和(0.3560,0.6104),只是起亮电压由3V变为4 V;器件的寿命由原来的175 h变为300 h,提高了1.7倍.因此,MgF2/Se薄膜是一种有效的OLEDs无机薄膜封装层.%Organic light emitting devices (OLEDs) are easy to be influenced by water vapor,oxygen of air and other pollutants,which leads to the reducing of their working life. In the paper,the MgF2 thin film with a good optical transmission and thermal stability and the Se thin film with a good stability in water vapor and oxygen were made in to composite thin film by vacuum evaporation as OLED encapsulation layer,and the lifetime of the device would be improved in expectation. The MgF2/Se thin film was vaporized on the cathode surface in the same conditon of vacuum (3?0-4 Pa) after the deposition of functional layers in OLEDs was completed. The luminance-voltage-current densities and electroluminesce spectra of green OLEDs (the device structure is ITO/CuPc/NPB/Alq3 :C-545T/Alq3/LiF/Al. )before and after encapsulation are compared. The research shows that the current density-voltage and electroluminesce spectrum of OLEDs are scarcely influenced by MgF2/Se encapsulation layer and both of their

  7. Acercando los archivos a los ciudadanos. Una experiencia desde el Portal de Archivos Españoles (PARES del Ministerio de Educación, Cultura y Deporte

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    Sánchez Mairena, Alfonso

    2014-02-01

    Full Text Available The Spanish Archives Portal is the third generation in the computerization of the State Archives. It is intended to provide citizens and researchers with integrated on-line access to the archival databases of the eight state general archives distributed across Spain, while facsimiles or digital versions of the documents are added to the archival description catalogue. At the same time, PARES is producing a line of tools for electronic management of the public services offered in the network of the State Archives to researchers and members of the public visiting the archive in person. And thirdly, PARES is an archival platform intended to promote the whole range of possible dissemination strategies. The platform today is fundamentally a repository for the creation, management and dissemination of historical records. However, also it is involved in a process of transformation to accommodate the concepts of “open files” and web 2.0 principles. To do this, different courses of action are being pursued such as converting PARES into an OAI-PMH repository, which allows interoperability with other archival information systems, both Spanish and international, and the development of new tools and standards for the incorporating multilingual access Points.El Portal de Archivos Españoles supone la tercera generación en la informatización de los Archivos Estatales. Está destinado a facilitar a los investigadores y a los ciudadanos el acceso integrado en red a las bases de datos archivísticas de los ocho grandes archivos de titularidad estatal distribuidos por la geografía española, al mismo tiempo que se van incorporando los facsímiles u objetos digitales de los documentos. Al mismo tiempo, PARES elabora una línea de herramientas para la gestión electrónica de los servicios públicos ofrecidos en la red de centros a los investigadores y ciudadanos que acceden presencialmente. Y en tercer lugar, PARES es una plataforma destinada a favorecer

  8. La participación social de los jóvenes españoles (Social participation of Spanish youth

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    Santacreu Fernández, Óscar Antonio

    2008-12-01

    Full Text Available Resumen: Este trabajo analiza la participación social de los jóvenes españoles, partiendo del concepto de capital social. Utilizando como metodología los modelos estructurales de covarianzas, busca la relación entre las actividades de participación de los jóvenes y factores como la pertenencia a asociaciones y colectivos, el interés que manifiestan por la política, el grado de confianza en la utilidad de la participación política y valores como la solidaridad. También evalúa la influencia de variables externas como el género, la clase social o los estudios. La principal hipótesis que se plantea consiste en que el grado de participación general está mediada principalmente por el interés en la política y por la actividad en ámbitos de participación institucionalizados.Abstract: This paper analyzes the social participation of Spanish young people, based on the concept of social capital. We use Covariance Structural Models as methodology to find the relationship between the participation activities of young people and factors such as their associations membership, their interest on politics, their confidence feeling on the political participation and values such as solidarity. It also evaluates the influence of external variables such as gender, social class or studies. The main hypothesis is that the overall participation is mediated primarily by the interest in politics and by the activity in institutionalized areas of participation.

  9. Roles y medios de comunicación españoles, un estudio comparativo de tres décadas

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    B Gutiérrez San Miguel

    2014-02-01

    Full Text Available Introducción. Este artículo presenta los resultados parciales de una investigación interdisciplinar consecuencia de un proyecto de innovación subvencionado por la universidad de Salamanca. Objetivos. Los objetivos son la identificación de los roles representados en diversos documentos televisivos españoles de los años 60, 80 y 2000, y el detectar el cambio social de cada época. Metodología. Se utiliza una metodología mixta con la elaboración de una encuesta aplicada a estudiantes y profesores de diversos Máster para detectar la representación de los paradigmas sociales en la televisión en los períodos analizados, los valores y los estereotipos que los sustentan. Para analizar el cambio en las preguntas de la encuesta en las diferentes etapas, se realizaron anovas de medidas repetidas y la prueba post-hoc bonferroni para las variables cuantitativa, y las pruebas no paramétricas de Q Cochran y McNemar para las variables categóricas de respuesta dicotómica. Conclusión. Se establece un cambio de paradigma en la representación de los roles en el país, con una evolución desigual de los mismos. Los malos tratos se visibilizan en los documentos audiovisuales y estos parecen fundamentarse en la pérdida de la identidad tradicional.

  10. Síntomas psicopatológicos en adolescentes españoles: relación con los estilos parentales percibidos y la autoestima

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    Ana I. Rosa-Alcázar

    2014-01-01

    Full Text Available El objetivo de esta investigación fue analizar la sintomatología psicopatológica evaluada con el SCL-90-R en una muestra comunitaria de 935 adolescentes españoles y su interacción con el estilo parental percibido y la autoestima. La muestra estuvo compuesta por 489 chicos y 446 chicas de edades comprendidas entre los 12 y 18 años (M = 14.84, DT = 1.83 que cursaban estudios de Educación Secundaria y Bachillerato. Catorce centros de la Región de Murcia y Castilla La Mancha aceptaron participar en el estudio. De éstos, fueron seleccionados al azar siete teniendo en cuenta la titularidad de los centros (pública y concertada. Los resultados indicaron la existencia de diferencias debidas a la edad en todas las variables medidas (síntomas psicopatológicos, autoestima y percepción de los estilos educativos parentales. Las mujeres presentaron menos niveles de sintomatología y mejor percepción de los estilos educativos. Los resultados de los análisis correlacionales confirmaron relaciones significativas y negativas entre autoestima y síntomas psicopatológicos y entre algunas dimensiones positivas de los estilos educativos. Los predictores más relevantes y de mayor peso en la salud psicológica fueron: autoestima, edad, sexo, revelación y afecto del padre y control psicológico de la madre.

  11. La opinión de los consumidores españoles sobre los alimentos transgénicos y su seguridad

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    Múñoz, Emilio

    2005-08-01

    Full Text Available This paper presents the results of a study on the public perception of food safety issues and transgenic foods among Spanish citizens. The results show two distinct types of behavior with respect to the acquisition of a product based on a new technology (like biotechnology: the behavior as consumers of a product, and the behavior as citizen and user of this technology. One of the reasons for this schism is the difference between the relatively high level of (general information and the low level of (specific knowledge with respect to this technology. People in Spain perceive transgenic foods as similar to existing industrial foodstuffs. This leads a majority of them to reject purchasing those products. These attitudes are in line with the responses given in relation to the introduction of regulation (labeling of transgenic foodstuffs.

    El presente artículo resume los resultados de una encuesta a ciudadanos españoles sobre su percepción de la seguridad alimentaria, especialmente en el área de los productos transgénicos. Los resultados indican que las personas se comportan de dos maneras distintas en el momento de comprar un producto: por un lado, como consumidores de un determinado producto y, por el otro, como usuarios (o ciudadanos-usuarios de tecnología. En ello influye que existe un alto nivel de información general sobre la biotecnología, pero todavía hay poco conocimiento sobre los aspectos específicos de los productos. La tecnología de los alimentos transgénicos se percibe en claves parecidas a los alimentos industriales existentes, lo que influye en las actitudes de compra (mayoritariamente de rechazo. Estas actitudes guardan relación con las respuestas aducidas para justificar el establecimiento de regulaciones (etiquetado sobre la comercialización de los alimentos modificados genéticamente.

  12. El lugar de la sátira en la poética: los tratados españoles del siglo XIX

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    González Alcázar, Felipe

    2008-12-01

    Full Text Available This article aims to analyse the satirical genre and its connections with Poetics in the Spanish Poetry and Rhetoric precept treatises of the nineteenth century. Throughout that century, literary theory was subject to major changes, such as the success of Hegel’s postulates on literary genres. Satire faces these changes and its own evolution: it was first identified with the Roman satura and afterwards through its various forms, it became a mixed or transitional genre. Its fragile nature seems to confront directly the normative perpetuity of treatises that, in spite of their rupture with romanticism, may be considered inheritors of the classicist principles.Se propone en este artículo investigar el género satírico y sus relaciones con la Poética a través de los tratados poético-retóricos de preceptiva españoles del siglo XIX. A lo largo de toda esa centuria la teoría literaria estuvo sujeta a grandes transformaciones, entre ellas, el triunfo de los principios hegelianos acerca de los géneros literarios. La sátira se enfrenta a esas mismas transformaciones y a su propia evolución: primero, identificada con la satura romana, y luego, a través de sus numerosas formas, convertida en un género mixto o de transición. Su lábil naturaleza parece enfrentarse directamente con la perennidad normativa de los tratados que, a pesar de la ruptura romántica, pueden considerarse herederos de los principios clasicistas.

  13. Simón Rodríguez Laso, un clérigo ilustrado en el colegio de San Clemente de los españoles

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    Nieto Sánchez, Carlos

    2013-06-01

    Full Text Available Simón Rodríguez Laso (Montejo, Salamanca, 1751, Bologna, 1821 Doctor of Law for the University of Bologna, Dignity of the Maestrecuela of the Cathedral of Ciudad Rodrigo, Knight of the Order of Carlos III and Rector of the College of San Clemente (Bolonga, Italy from 1788 until his death, in 1821. This article seeks to highlight the Italian stage of a Spanish Enlightenment men, who fought for the survival of a characteristic institution of the Ancien Regime, San Clemente of the Spaniards College, which resisted the offensive of liberalism. The article also underlines Laso´s personality, learned and regalist, he saw off his reformist thinking because of the new ideas that emerged from French Revolution and devoted his life to the Hispanic College of Bologna.Simón Rodríguez Laso (Montejo, Salamanca, 1751, Bolonia, 1821 Doctor en Cánones por la Universidad de Bolonia, dignidad de de maestrescuela de la S. I. catedral de Ciudad Rodrigo, caballero de la Orden de Carlos III y rector del Colegio de San Clemente de Bolonia desde 1788 hasta su muerte en 1821. En este artículo se pretende dar a conocer la etapa italiana de un ilustrado español, que luchó por la supervivencia de una institución característica del Antiguo Régimen, el Colegio de San Clemente de los españoles de Bolonia, que resistió a la ofensiva del liberalismo. En el artículo se quieren también destacar algunos rasgos de la personalidad de Laso, ilustrado y regalista, que vio mitigado su pensamiento reformista por las nuevas ideas que surgieron de la Revolución Francesa y que consagró su vida al Colegio hispánico de Bolonia.

  14. Planos de arquitectos españoles publicados en Roma (s. XIX: el Teatro de Marcelo y el Santuario de Hércules Vencedor

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    García Sánchez, Jorge

    2008-12-01

    Full Text Available In the eighteenth century, numerous architects, including Spaniards, travelled to Rome to study the ancient monuments, at a time when a view of the Greco-Roman past prevailed in European art as an aesthetic solution and theoretical answer to outdated Baroque art. These works constitute an important graphic document of the condition of the classic monuments at that time, and they reflect the archaeological interest of the Enlightenment. As a perfectly developed science, architecture approached the analysis of Antiquity with a precision that did not exist in antiquarian mentality, as demonstrated in the two examples we offer here: the elaboration of the archaeological plans of the Theatre of Marcellus and the Sanctuary of Hercules Victor.En el siglo XVIII el estudio de los monumentos de la Antigu.edad condujo a numerosos arquitectos a Roma, incluidos los españoles, en una época en la que predominaba en las artes europeas una contemplación del pasado grecorromano como solución estética y respuesta teórica al caduco arte barroco. Estos trabajos constituyen una importante documentación gráfica del estado de los monumentos clásicos en aquel entonces, y reflejan las inquietudes arqueológicas del Siglo de la Ilustración. Al tratarse de una ciencia ya perfectamente desarrollada, la arquitectura abordó el análisis de la Antigu.edad con una precisión inexistente en la mentalidad anticuaria, como demuestran los dos ejemplos que ofrecemos: la elaboración de los planos del Teatro de Marcelo y del Santuario de Hércules Victor.

  15. Los flujos migratorios en las estadísticas de origen y destino: la emigración de españoles a Europa (2008-2013

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    Juan Manuel Romero-Valiente

    2016-01-01

    Full Text Available El objetivo de este artículo es ampliar el conocimiento demográfico de la emigración española a Europa en la actualidad. Para ello se realiza un análisis comparativo entre los datos y cifras que ofrecen las estadísticas españolas (emigración y la de los países receptores (inmigración para el período 2008-2013. Ello permite observar las diferencias notables entre las mismas a favor de los países receptores: duplican o triplican (al menos a las españolas según sea el concepto de migración utilizado para el registro estadístico. Estas diferencias se deben fundamentalmente a las existentes en el registro de migrantes jóvenes (especialmente de 20-29 años. Los problemas de subregistro en las estadísticas españolas, así como los de sobre-registro en las de los países receptores, que afectan especialmente a dicho colectivo, constituyen los principales factores explicativos de las mismas. Las estadísticas de los países receptores elaboradas siguiendo el concepto de migración de largo plazo, aunque no exentas de limitaciones, permiten aproximarnos mejor a la realidad el volumen, evolución y estructura demográfica del flujo migratorio de españoles hacia Europa. Un flujo muy superior, sin duda, al cifrado en las estadísticas de emigración española, y conformado en mucha mayor medida por personas jóvenes.

  16. Análisis de la motivación en corredores de maratón españoles

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    Francisco Ruiz-Juan

    2014-01-01

    Full Text Available En el presente trabajo se planteó como objetivo analizar la motivación de los maratonistas españoles para correr, las variables que predicen correr por unos u otros motivos y las diferencias de sexo. Al administrar las Motivations of Marathoners Scales-34 a una muestra de 1.226 corredores de 3 maratones, se obtuvo que las motivaciones más altas fueron intrínsecas o relacionadas con la tarea (significado de la vida-autoestima y orientación a la salud y las más bajas extrínsecas o relacionadas con el ego (reconocimiento. Se obtuvieron algunos resultados no predichos en la hipótesis como que las mujeres puntuaron significativamente más alto que los hombres en 4 de las 7 subescalas motivacionales, o que los días y kilómetros entrenados por semana y la marca personal apenas estuvieron asociadas con sus motivos. También se obtuvieron numerosos datos descriptivos y diferencias por sexo en cuanto a variables sociodemográficas, de entrenamiento y de rendimiento. El análisis regresivo dio 7 modelos explicativos de las variables que predicen correr por unos u otros motivos, y se concluyó que estos van evolucionando con la edad y el número de maratones terminados. Copyright © 2012, Fundación Universitaria Konrad Lorenz. Publicado por Elsevier España, S.L.U. Este es un artículo de acceso abierto distribuido bajo los términos de la Licencia Creative Commons CC BY-NC-ND (http://creativecommons.org/licenses/by-nc-nd/3.0/.

  17. EL DESARROLLO DE LA LOMCE Y LOS NUEVOS CURRÍCULOS DE SECUNDARIA: LAS PROPUESTAS DE LA ASOCIACIÓN DE GEÓGRAFOS ESPAÑOLES

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    Carmen Delgado Viñas

    2014-12-01

    Full Text Available   Una vez aprobada la Ley Orgánica para la Mejora de la Calidad de la Educación (LOMCE, de 9 de diciembre de 2013, el Ministerio de Educación publicó un Proyecto de Real Decreto por el que se establecía el currículo básico de la Educación Primaria, de la Educación Secundaria Obligatoria y del Bachillerato, abriendo un periodo de información pública y presentación de sugerencias entre el 12 de diciembre de 2013 y el 3 de enero de 2014. La Asociación de Geógrafos Españoles envió el proyecto de Real Decreto a los socios y solicitó especialmente el parecer de los antiguos presidentes de la AGE. Un significativo número de socios, a título individual, y todos los ex presidentes respondieron aportando sus opiniones sólidamente argumentadas. Por otra parte, algunos miembros del Grupo de Didáctica de la Geografía, como los profesores María Luisa de Lázaro Torres y Rafael de Miguel González presentaron propuestas, a título individual, para mejorar el currículo de la asignaturas de Geografía e Historia (Educación Secundaria Obligatoria y Geografía (Segundo de Bachillerato. Asimismo, se utilizaron como referencia los resultados y conclusiones de una amplísima encuesta sobre propuestas de modificación curriculares, que se había realizado previamente a un elevado número de profesores de Geografía de Enseñanza Secundaria. 

  18. DE ESPAÑOLES, YUCATECOS E INDIOS: LA VENTA DE MAYAS A CUBA Y LA CONSTRUCCIÓN IMAGINADA DE UNA NACIÓN

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    Izaskun Álvarez Cuartero

    2012-06-01

    Full Text Available El presente trabajo analizará brevemente la situación social, económica y política de los mayas en el desarrollo colonial peninsular y posteriormente en la construcción independiente de Yucatán hasta el estallido de la Guerra de Castas (1847. El análisis central de la investigación pretende mostrar que durante el período anteriormente mencionado se pueden establecer una serie de parámetros para enunciar y diseñar la nación maya yucateca. Me centraré en explicar el establecimiento de las relaciones entre la población maya y los españoles y su desarrollo durante la génesis del estado-nación mexicano y estado-nación yucateco. Dentro de este discurso es para mi fundamental analizar cómo durante los primeros años de la Guerra de Castas el gobierno yucateco participó en la venta a Cuba de indios mayas apresados durante el conflicto, este tráfico escondía un intento de hacer desaparecer del territorio a todos aquellos indios que pudieran impedir el diseño de un Yucatán blanco y próspero, donde no tenían cabida los elementos sociales que dificultaban ese proyecto. También examinaré la producción de textos racistas en Yucatán a través de varios documentos con especial atención en los aspectos biopolíticos que se perciben en los mismos.

  19. Study of structural and optical properties of ZnAlQ{sub 5} (zinc aluminum quinolate) organic phosphor for OLED applications

    Energy Technology Data Exchange (ETDEWEB)

    Nagpure, I. M., E-mail: indrajitnagpure@gmail.com; Painuly, Deepshikha [Physics, Department of Sciences and Humanities, National Institute of Technology,Uttarakhand-246174 (India); Rabanal, Maria Eugenia [Department of Materials Science and Engineering and Chemical Engineering,University Carlos III of Madrid, Avd. Universidad 30, 28911 Leganes, Madrid (Spain)

    2016-05-06

    The various composition of ZnAlQ{sub 5} such as Zn{sub 1.5}A{sub 10.5}Q{sub 5}, Zn{sub 1}Al{sub 1}Q{sub 5}, Zn{sub 0.5}Al{sub 1.5}Q{sub 5} organic phosphors were prepared via simple cost effective co-precipitation method. The FTIR, SEM, photoluminescence analysis of the prepared phosphors were reported. ZnQ{sub 2} and AlQ{sub 3} were also prepared by similar method and their properties were compared with different composition of ZnAlQ{sub 5}. The structural elucidation in the form of stretching frequencies of chemical bonds of the prepared phosphor was carried out using Fourier Transform Infrared Spectroscopy (FTIR). The stretching frequency analysis confirms the formation of prepared phosphor materials. The SEM analysis shows the surface morphological behavior of prepared phosphor materials. Greenish photoluminescence were observed at 505 to 510 nm for the different composition of ZnAlQ{sub 5},in which Zn{sub 1.5}Al{sub 0.5}Q{sub 5} shows maximum luminescence intensity at 505 nm. PL emission of ZnQ{sub 2} was observed at 515 nm, while for AlQ{sub 3} at 520 nm. The blue shift of 10 nm was observed in Zn{sub 1.5}A{sub 10.5}Q{sub 5} due to modification of energy level due to presence of Zn{sup 2+} and Al{sup 3+}. The enhancement in PL intensity was observed in Zn{sub 1.5}A{sub 10.5}Q{sub 5} compared to the other composition due to transfer of energy between Zn{sup 2+} and quinolate complex. Optical properties of the prepared materials were evaluated for possible applications in organic light emitting devices (OLED).

  20. El discurso de y sobre los desempleados españoles mayores de 45 años en los blogs

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    Diana Amber

    2015-09-01

    Full Text Available Los desempleados mayores de 45 años son un colectivo social que está sufriendo la crisis económica española actual con especial intensidad. Esto es silenciado por los medios de comunicación. Esta invisibilidad social reduce sus oportunidades de reincorporarse al mercado laboral y daña su autoimagen. Los blogs, como sitios webs personales sobre un contenido específico, pueden ser una alternativa de presencia en la sociedad de la información. La finalidad de este trabajo es comprender la situación de estas personas a través de los textos generados en los blogs dedicados a empleo y formación. Para ello se usa el análisis lingüístico y crítico del discurso. Se analizan 12 blog españoles de especial relevancia. En estos blog aparece información relevante para comprender y visibilizar a este colectivo y su problemática. Los resultados muestran las temáticas principales que componen el discurso, así como sus principales orientaciones y contenidos (vivencias personales, reflexión, orientación vocacional y profesional. Concluimos que su situación de invisibilidad, así como de falta real de empleo está afectando a sus vidas, familias, economías e identidades. Reivindican la necesidad de tener empleo para ser y sentirse ciudadanos. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1503266

  1. Análisis de la fuerza isométrica en trampolinistas españoles de distintas categorías competitivas

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    Luis Arturo Gómez-Landero Rodríguez

    2015-03-01

    Full Text Available Introducción: Debido a la ausencia de trabajos que describan y analicen el perfil de fuerza isométrica en Trampolín y su relación con el rendimiento deportivo, se plantea un estudio transversal, comparativo y correlacional en esta línea con trampolinistas españoles. Método: Muestra compuesta por 60 trampolinistas de élite nacional, agrupados por categoría competitiva en 4 grupos: 1 Sub-15 masculino (n = 23; 11,95 ± 1,79 años, 2 Sub-15 femenino (n = 9; 11,44 ± 1,23 años, 3 Absoluto masculino (n = 18; 20,72 ± 4,66 años, 4 Absoluto femenino (n = 10; 16,1 ± 2,02 años. Mediciones mediante dinamometría isométrica por célula de carga (sistema Control de la Fuerza FAFD, obteniendo fuerza isométrica absoluta y relativa en flexión y extensión de rodillas, tronco, codos, hombros y prensión manual. Comparaciones de grupos entre sí y correlaciones de fuerza con nota de dificultad. Resultados: Numerosas correlaciones significativas de fuerza absoluta con dificultad; la fuerza extensora de hombros correlaciona significativamente con dificultad en todos los grupos; aumento significativo de fuerza absoluta con la edad pero no de fuerza relativa. Conclusiones: Los valores superiores de fuerza isométrica en los grupos Absolutos frente a los Sub-15 justifican su separación en competición; los resultados obtenidos podrían utilizarse en el diseño de test para la selección de talentos en trampolín.

  2. Características de la planificación del entrenamiento en los deportes de equipo españoles de élite

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    Diego Moliner Urdiales

    2010-09-01

    Full Text Available El objetivo del estudio fue analizar mediante cuestionario la formación de los preparadores físicos (PF y las características de la planificación en los equipos masculinos españoles de élite de balonmano, baloncesto, voleibol, fútbol sala, fútbol y hockey hierba. El ratio de respuesta fue del 81,8 %. El cuestionario estaba dividido en 7 ítems: perfil formativo de los PF, modelo de planificación, nivel de individualización, organización de la sesión, planificación del periodo preparatorio, planificación del periodo competitivo, planificación del periodo transitorio. Un 80,5 % de los PF eran licenciados en CAFD, un 22 % tenía máster y un 40,3 % eran entrenadores nacionales. Sólo un 5,2 % consultaba revistas científicas (International Science Index. Un 48,1 % planificaban la temporada según el calendario competitivo. En baloncesto y fútbol, los entrenamientos se ajustaban al volumen competitivo individual (87 %. Un 71 % realizaban el trabajo condicional antes del técnico-táctico y un 7,8 % lo hacía habitualmente integrado. Los equipos de balonmano, baloncesto y fútbol (91 % disputaron más de 6 partidos preparatorios. El periodo transitorio fue superior a 6 semanas en balonmano, voleibol y hockey hierba (84 % vs. 38 %, realizando el 91 % un programa de trabajo. Las deficiencias observadas en la planificación de los equipos podrían estar relacionadas con ciertas carencias en la formación científica identificadas entre los PF

  3. Competencia en lengua inglesa de estudiantes universitarios españoles en el contexto del EEES: nivel de dominio lingüístico, estrategias metacognitivas y hábitos lectores.

    OpenAIRE

    Gómez López, Ángela; Solaz Portolés, Joan Josep; Sanjosé López, Vicente

    2014-01-01

    En este artículo se presenta un estudio descriptivo y exploratorio de las necesidades formativas que los estudiantes universitarios españoles tienen en cuanto al inglés para poder seguir un grado universitario en esta lengua extranjera. Con ello pretendemos detectar cuáles son las áreas de atención prioritaria para lograr la formación universitaria pretendida en el Espacio Europeo de Educación Superior. Se tomaron medidas del nivel de dominio del inglés mediante el Oxford Online Placement Tes...

  4. Uso de alcohol y tabaco y variables cognitivo-motivacionales en el ámbito escolar: efectos sobre el rendimiento académico en adolescentes españoles

    OpenAIRE

    Inglés, Cándido J; María S. Torregrosa; Rodríguez-Marín, Jesús; García del Castillo Rodríguez, José Antonio; José J. Gázquez; García-Fernández, José Manuel; Delgado, Beatriz

    2013-01-01

    El objetivo de este estudio fue analizar: (a) la relación entre el consumo de tabaco y alcohol y el rendimiento académico y (b) la capacidad predictiva de los factores psicoeducativos y el abuso de alcohol y tabaco sobre el rendimiento académico en una muestra de 352 adolescentes españoles de 2º a 4º de Educación Secundaria Obligatoria (ESO). Para analizar las variables cognitivo-motivacionales se utilizaron el Self-Description Questionnaire-II, la Sydney Attribution Scale y el Achievement Go...

  5. La comunicación online de las políticas de Responsabilidad Social Corporativa en los principales grupos de comunicación españoles

    OpenAIRE

    Romero Calmache, María; García Ortega, Carmela; Pérez Serrano, María José

    2012-01-01

    La Responsabilidad Social Corporativa (RSC) de los principales grupos de comunicación españoles supone un objeto de estudio especialmente relevante en tiempos de crisis. Ante las transformaciones de naturaleza estructural y económica que está sufriendo esta tipología empresarial, la actividad responsable de dichas organizaciones supone una vía eficaz de diferenciación. Esta investigación tiene como misión observar cómo los holdings de medios comunican a la sociedad la forma peculiar en que ca...

  6. Inmigrantes españoles en Pachuca (1866-1911): redes de parentesco, matrimonio y ocupación. Tres estudios de caso (José Maquivar, Agustín Inurritegui y Lorenzo Maquivar)

    OpenAIRE

    Ubilla Montiel, Silvia Guadalupe

    2013-01-01

    El matrimonio es un fenómeno social de larga duración que ha sido estudiado desde diversas disciplinas sociales (Derecho, Historia, Psicología, Sociología, Antropología, etc.). Tal diversidad de enfoques será de mucha ayuda para entender su complejidad. Por otro lado, la inmigración de españoles a Pachuca durante el Porfiriato se incrementó debido a varias causas,1 siendo una de ellas el conjunto de leyes de poblamiento, en el que se prefería a los europeos y porque, además la hispanofobia se...

  7. Características psicosociales y psicopatológicas en una muestra de adolescentes españoles a partir del Youth Self-Report/11-18

    OpenAIRE

    Zubeidat, Ihab; Fernández Parra, Antonio; Ortega Castejón, José Francisco; Vallejo, Miguel Ángel; Sierra, Juan Carlos

    2009-01-01

    En este estudio se analizan las competencias psicosociales y características psicopatológicas evaluadas por el YSR/11-18 (Achenbach y Rescorla, 2000, 2001) en una muestra de 961 adolescentes españoles de 13-18 años de edad. Los resultados encontrados indicaron que los varones puntúan de forma elevada en distintas actividades sociales y psicopatología externalizante, mientras que las mujeres presentan mayores puntuaciones en rendimiento en diferentes tareas y sintomatología internalizante. Los...

  8. Competencia en lengua inglesa de estudiantes universitarios españoles en el contexto del EEES: nivel de dominio lingüístico, estrategias metacognitivas y hábitos lectores.

    OpenAIRE

    Gómez López, Ángela; Solaz Portolés, Joan Josep; Sanjosé López, Vicente

    2014-01-01

    En este artículo se presenta un estudio descriptivo y exploratorio de las necesidades formativas que los estudiantes universitarios españoles tienen en cuanto al inglés para poder seguir un grado universitario en esta lengua extranjera. Con ello pretendemos detectar cuáles son las áreas de atención prioritaria para lograr la formación universitaria pretendida en el Espacio Europeo de Educación Superior. Se tomaron medidas del nivel de dominio del inglés mediante el Oxford Online Placement Tes...

  9. La mecánica ilustrada en los ingenieros militares españoles. El proyecto de los almacenes de pólvora (1715-1798

    Directory of Open Access Journals (Sweden)

    Lluis i Ginovart, J.

    2015-09-01

    Full Text Available The catenary arches were part of the great structural success of the modernist architecture, and especially in the Gaudí’s work. The study of the Spanish military engineers’ projects shows that they were the first that introduced in the Spanish territory in the first third of the eighteenth century. Knowledge and the attempt to apply this type of structure, especially in the construction of Powder-Magazines, will demonstrate the knowledge of the scientific theory of these structures made by Hooke. The study of pre-scientific Mechanics was claimed by Juan de Herrera in the Academy of Mathematics (1583, as it is scientific Mechanics at the Academy of Barcelona (1720. For this reason and due to the use of catenary arch and vault, this will show that they provided the bases of modern mechanic.Los arcos catenarios formaron parte del gran éxito estructural de la arquitectura modernista y, especialmente, de la obra de Gaudí. El estudio de los proyectos de los ingenieros militares españoles, demuestra que fueron ellos los primeros que los introdujeron en el territorio español en el primer tercio del siglo XVIII. El conocimiento y el intento de aplicación de este tipo de estructuras, especialmente en la construcción de polvorines, demostraría el conocimiento de la teoría científica de estas estructuras formulada por Hooke. El estudio de la Mecánica pre-científica fue reclamado por Juan de Herrera en la Academia de Matemáticas (1583, al igual que lo será la Mecánica científica en la Academia de Barcelona (1720. Por ello y ante la utilización del arco y bóveda catenaria, se demostraría también que aportaron las bases de la Mecánica moderna.

  10. El precio de la internacionalidad: la dualidad en los patrones de publicación de los investigadores españoles en comunicación

    Directory of Open Access Journals (Sweden)

    Fernández-Quijada, David

    2013-06-01

    Full Text Available This article characterizes publication patterns of Spanish communication scholars in scientific journals. Different parameters are analyzed: institution of origin, number of authors, typology of collaborations and the number and target of references. In order to achieve its objectives, three samples were studied: non-SSCI Spanish journals, SSCI Spanish journals and SSCI international journals. The results reveal a dual behaviour for these authors depending on the national or international destination of their articles. Publishing in an international journal is usually done by authors from younger universities and implies multiple authorship, collaboration with foreign scholars and a high number of references to international journals. Just the contrary can be said of Spanish journals. SSCI Spanish journals are more defined by their nationality than by their inclusion in this internationally prestigious bibliographic index.Este artículo caracteriza los patrones de publicación en revistas científicas de los investigadores españoles de comunicación. Se analiza la institución de procedencia, el número de autores, la tipología de las colaboraciones y el número y destino de las referencias para tres muestras de revistas distintas: revistas españolas no indizadas en SSCI, revistas españolas incluidas en SSCI y revistas internacionales SSCI. Los resultados muestran un comportamiento dual de los autores en función del destino nacional o internacional de sus artículos. Así, publicar en una revista internacional es más propio de los autores de universidades jóvenes e implica mayoritariamente autoría múltiple, colaboración con autores foráneos y un gran número de referencias a revistas internacionales. Todos estos parámetros se invierten en el caso de las revistas nacionales. Finalmente, las revistas españolas SSCI se definen más por su nacionalidad que por su pertenencia al índice bibliográfico de referencia internacional.

  11. Los recursos tecnológicos en la estadística bidimensional en los textos españoles de bachillerato

    Directory of Open Access Journals (Sweden)

    María M. Gea

    2015-12-01

    Full Text Available Los currículos actuales recomiendan el uso de los recursos tecnológicos en la enseñanza de la estadística, por la ventaja que suponen en el cálculo y representación gráfica, el trabajo con datos reales y el aprendizaje de conceptos a través de la simulación. En esta investigación se analizan los recursos tecnológicos que los libros de texto sugieren para la enseñanza y aprendizaje de la estadística bidimensional en bachillerato (organización y representación de datos bidimensionales, correlación y regresión. La importancia de este aspecto se debe a que extiende la dependencia funcional a situaciones aleatorias y proporciona al alumno oportunidades de modelizar numerosas aplicaciones. Por otro lado, la investigación didáctica muestra dificultades de comprensión y concepciones erróneas en esta área. Mediante un análisis de contenido se han estudiado dieciséis libros de texto españoles, ocho libros de cada una de las dos especialidades de bachillerato que incluyen “Humanidades y Ciencias Sociales” y “Ciencia y Tecnología”. En dichos libros se estudia el uso que se hace de recursos tecnológicos en los problemas y procedimientos propuestos, los tipos de recursos que se referencian para trabajar con internet y el contenido de un CD que acompaña a la mayoría de estos textos. Los resultados muestran una escasa presencia de recursos tecnológicos en los textos analizados, a la vez que una gran variabilidad de los recursos descritos. La referencia a recursos en internet se suele restringir a unidades didácticas y no a conjuntos de datos que puedan usarse en proyectos o a simuladores que faciliten la comprensión conceptual. El CD que acompaña a los textos a veces reproduce el mismo texto o se reduce a colecciones de ejercicios tradicionales; son minoría los problemas y procedimientos que usan recursos tecnológicos. Se concluye con algunas recomendaciones para la mejora de estos textos, teniendo en cuenta dichos

  12. Cambios recientes en la ocupación del suelo de los parques nacionales españoles y su entorno

    Directory of Open Access Journals (Sweden)

    Richard Hewitt

    2016-01-01

    Full Text Available Ante la necesidad de monitorizar los cambios en los usos del suelo (referido a menudo por sus siglas en inglés LUCC ocurridos en los parques nacionales (PPNN españoles, como medida para prever tendencias de cambio no deseadas que comprometan la protección del entorno, se presenta un análisis detallado de los LUCC en los parques que conforman la red de parques nacionales, según la metodología descrita en Pontious et al. (2004. Para realizarlo, la conocida base de datos cartográfica Corine Land Cover (CLC resulta imprescindible al tratarse de la única base de datos de usos del suelo con cobertura en toda España, y con versión multi-temporal contando con la misma clasificación temática en sus tres fechas (1990, 2000 y 2006. Como resultado del análisis de cambio, se investigaron las dinámicas en todos los parques y se determinó una serie de indicadores de dinamismo de cambios de los usos del suelo en la que se captaron las tendencias de cambio que suponen un peligro para los valores naturales, los servicios de los ecosistemas o los hábitats de los parques. Se entiende que los parques en sí mismos, definidos por un límite, dentro del cual se aplican restricciones severas a las actividades que pueden tener lugar, no puede conservarse si en sus inmediaciones se permite la degradación del medio. Por ello, se ha estudio no sólo cada uno de los parques que componen la red sino también sus zonas colindantes. El análisis permitió determinar las dinámicas de cambio que afectan a los parques y a sus zonas limítrofes sobre dos periodos distintos (1990-2000 y 2000-2006, poniendo de manifiesto los riesgos existente a la vez que su evolución temporal.

  13. Integración vertical y contratación externa en los servicios generales de los hospitales españoles

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    Puig-Junoy J.

    2002-01-01

    Full Text Available Objetivos: Este estudio analiza los factores que influyen en las decisiones de integración vertical/contratación externa de cuatro servicios generales (limpieza, lavandería, alimentación y seguridad y mantenimiento en los hospitales españoles (3.160 transacciones que corresponden a 790 hospitales. Métodos: Se presenta la estimación empírica de un modelo logístico de maximización de la utilidad de los hospitales, en el que intervienen no sólo factores relacionados con los costes de transacción, sino también otros relacionados con la intervención pública y la dimensión política. Resultados: El 55,7% de los hospitales contrata al menos uno de los servicios generales analizados. El servicio de limpieza es el que presenta un mayor grado de contratación externa (45,1%, seguido del servicio de seguridad y mantenimiento (32,5%. En cambio, el servicio de lavandería es el que presenta un mayor grado de integración vertical (94,3% junto con el de alimentación (80,1%. La dimensión del hospital (economías de escala, medida a través del número de camas, es una de las variables que influyen de forma importante la decisión de integración vertical o contratación externa de los servicios de limpieza, alimentación y mantenimiento y seguridad. Conclusiones: Las economías de escala contribuyen a una mayor integración vertical, mientras que la especialización y el carácter lucrativo favorecen la decisión de contratación externa. El servicio de lavandería tiene un comportamiento diferenciado de los demás, mostrando efectos que indican la posible presencia de activos específicos.

  14. EL TRATAMIENTO INFORMATIVO DE LA INMIGRACIÓN EN LOS MEDIOS ESPAÑOLES UN ESTUDIO COMPARATIVO DE LA PRENSA Y TELEVISIÓN

    Directory of Open Access Journals (Sweden)

    Carlos Muñiz Muriel

    2008-01-01

    Full Text Available La inmigración es un hecho social presente en todos los países de la Unión Europea, entre ellos España, donde en los últimos años su aumento poblacional extranjero ha ido unido a un incremento de las actitudes perjudiciales hacia la inmigración. El tratamiento informativo (framing que los medios de comunicación hacen de esta realidad puede tener una alta influencia en las opiniones y actitudes mantenidas por la opinión pública hacia la inmigración. Ello hace necesario el estudio del tipo de cobertura que en los últimos años han dado la prensa y televisión españolas, como medios informativos de mayor audiencia, a los inmigrantes y la inmigración a través de sus noticias. Para ello, se realizó un análisis de contenido de las noticias aparecidas en las principales cadenas de televisión y periódicos españoles durante el año 2004, que permitiera comprobar las hipótesis de investigación planteadas en el estudio. En este sentido, se observó que la mayoría de las noticias que daban cobertura informativa a la inmigración solían tener un carácter negativo y ser emplazadas dentro de la sección de nacional o sociedad. Además, los datos permitieron observar un tratamiento polarizado entre las noticias positivas, que presentaban la contribución económica de los inmigrantes, y las negativas, que vinculaban en mayor medida la inmigración con aspectos negativos como la violencia, siendo además éste el encuadre noticioso dominante. En último lugar, se observó una falta de contextualización temática en las noticias analizadas, con una especial predominancia de la televisión.

  15. La situación profesional de los periodistas españoles: las repercusiones de la crisis en los medios

    Directory of Open Access Journals (Sweden)

    X Soengas Pérez

    2014-02-01

    Full Text Available Introducción. Esta investigación analiza la situación profesional, laboral y económica de los periodistas en España en los últimos cinco años, un periodo en que la crisis y la convergencia mediática coinciden con el proceso de digitalización. Metodología. Para conocer las características del escenario actual realizamos un análisis cualitativo y cuantitativo con encuestas a cuatro redactores de cada uno de los principales medios de comunicación públicos y privados, y se les ha preguntado por todos los cambios impuestos por sus empresas desde 2008. Además, realizamos una serie de entrevistas de contraste a expertos para tener una valoración complementaria y externa de la situación de la prensa. Resultados. Los resultados obtenidos demuestran que las condiciones de la mayoría de los periodistas españoles han empeorado desde el comienzo de la crisis, y los problemas se han acentuado en 2012. Los recortes realizados en este periodo son los más drásticos de los últimos veinte años y afectan a todos los elementos del proceso informativo. Discusión y Conclusiones. En la reestructuración de las redacciones han predominado los objetivos económicos por encima de los criterios periodísticos y del interés informativo, tal como reconocen el 54% de los trabajadores de los medios públicos y el 65% de los privados. El 87% de las empresas analizadas ha reducido su plantilla o recortado los recursos materiales, el 62% de los periodistas han perdido poder adquisitivo desde 2008 y el 33% de los redactores fijos teme por su puesto de trabajo, una cifra que aumenta hasta el 54% en los mayores de 50 años y llega al 68% en el caso de los contratados.

  16. Uso del preservativo masculino en las relaciones con coito vaginal de jóvenes españoles entre catorce y veinticuatro años

    Directory of Open Access Journals (Sweden)

    María Lameiras Fernández

    2008-01-01

    Full Text Available en la actualidad, el preservativo masculino continúa siendo el principal método para prevenir enfermedades de transmisión sexual, incluido el VIviH/SIDAsida. Eel objetivo de este estudio transversal analítico-descriptivo es evaluar la frecuencia de uso de dicho preservativo en las relaciones sexuales coito-vaginales de jóvenes españoles con edades entre 14 y 24 años, e identificar las variables relacionadas con los factores que predisponen, facilitan y refuerzan su utilización. Lla muestra estuvo integrada por 2.171 jóvenes de las comunidades de Ggalicia, Madrid y Aandalucía. 50,4% de los jóvenes encuestados manifestaron haber tenido relaciones coitovaginales en los últimos seis meses. Sse encontró que ser mayor de 18 años y tener más actividad sexual se asocia a menor frecuencia de uso del preservativo. tomó como referencia el modelo Precede; los análisis de regresión logística identificaron como predictores confiables: la intención de conducta de no riesgo y la habilidad autopercibida para usar el preservativo masculino con la pareja habitual (dentro del grupo de factores predisponentes; uso del preservativo masculino la primera vez que mantuvo relaciones coito-vaginales, hablar con la pareja sobre las prácticas sexuales por llevar a cabo, hablar con la pareja sobre los métodos de prevención que se van a utilizar y la baja frecuencia de relaciones con penetración vaginal (dentro del grupo de factores facilitadores; y haber sentido agobio, culpa o arrepentimiento por no tomar precauciones tras alguna práctica coito-vaginal (dentro del grupo de factores reforzantes. Los resultados de este estudio confirman la utilidad del modelo Precede para efectuar el diagnóstico de la conducta sexual.

  17. Bann en créole mauricien : nom de quantité et morphème de pluralité

    Directory of Open Access Journals (Sweden)

    Alleesaib Muhsina

    2012-07-01

    Full Text Available Cet article se propose d’étudier le statut de l’élément polyfonctionnel bann en créole mauricien dans une perspective synchronique. Les études précédentes (telles que Baker 2003 ont été effectuées dans une perspective diachronique et traitent très peu de la distribution et l’interprétation en mauricien contemporain. Les emplois de bann se divisent en trois catégories : un nom lexical bann s’emploie comme un nom signifiant ‘groupe’ servant à désigner une classe ou un ensemble d’entités : enn bann garson signifie ‘un groupe de garçons’. Il s’emploie uniquement avec des référents [+humains]. Le second emploi de bann consiste à former avec enn ‘un’ une expression de quantité enn bann ‘une quantité de’. Ces syntagmes nominaux ont toujours une interprétation indéfinie. (1Ti ena enn bannlapousyer anba larmwar. ‘Il y avait une grande quantité de poussière sous l’armoire.’ La marque de pluriel bann peut apparaître dans des nominaux dont l’interprétation est définie ou indéfinie. (2a. Kevin inn zwenn etidyanla. ‘Kevin a rencontré l'étudiant.’ (2b. Kevin inn zwenn bann etidyan la. ‘Kevin a rencontré les étudiants.’ Dans le cadre de l’hypothèse DP, la marque de pluralité bann s’analyse comme occupant la même position que les numéraux et que l’indéfini enn. Suite à Borer (2005, cette projection est étiquetée Quantity Phrase. Sur le plan de l’interprétation, bann induit invariablement une lecture comptable et plurielle.

  18. Influence of DMQA Concentration on Optical and Electrical Performance in OLEDs%DMQA浓度对OLEDs光电性能的影响

    Institute of Scientific and Technical Information of China (English)

    连加荣; 曾鹏举

    2011-01-01

    The leakage of high-pressure syringe is usually happened during the course of clinical applications due to its rapid injection speed and high pressure. Based on Texas Instrument(TI)'s microcontroller MSP430F449 and Measurement Specialties Inc(MEAS)'s pressure sensor FS2050. An intelligent diversion & alarm system is designed to prevent the leakage of high-pressure syringe designed. The system can offer real-time monitoring for the full injection process, and start sound & light alarm, switch diversion immediately once the leakage is monitored. The intelligent system can not only overcome the shortcomings of easy to loose on mechanical designs, but also increase the switching function which can effectively reduce the pain of patients. Animal experimental results show that the intelligent diversion & alarm system is reliable and sensitive and can effectively prevent the leakage of high-pressure syringes.%为了探讨DMQA掺杂浓度对有机发光器件(OLEDs)光电性能的影响,采用器件结构ITO/PEDOT:PSS/TPD/Alq3:DMQA/LiF/Al,在0.28~4.5 wt%范围内改变DMQA的掺杂浓度,考察了器件的光电性能变化.结果显示,随着升高DMQA掺杂浓度,器件表现为电流略有下降,说明DMQA对载流子传输起阻挡或者陷阱作用;器件发光效率下降明显,说明DMQA分子间作用力较强,存在浓度淬灭效应,而且,器件发光光谱在570~610 nm区间存在肩峰,其强度随着DMQA浓度增加逐步增大,据此推断该肩峰来自于DMQA激基缔合物发射.

  19. Viajeros españoles por Europa en los años cuarenta del siglo XIX: tres formas de entender el relato de viaje

    Directory of Open Access Journals (Sweden)

    Peñate Rivero, Julio

    2011-06-01

    Full Text Available In the history of the Spanish travel literature, the 1840s have a particular place: after the Napoleonic Wars and the first Carlist War came a period of relative calm which encouraged visitors to Spain but also the Spanish to travel outside the Iberian Peninsula. France, Belgium, Netherlands and Germany are among the most attractive options. The variety of available texts gives the possibility to distinguish between at least three variants or perspectives: the travel story as discovery, as verification and as travel guide. This article intends to introduce these diverse perspectives from representative authors whose itineraries are partly similar: Modesto Lafuente, Ramón Mesonero Romanos y Ángel Fernández de los Ríos. There will be a special emphasis on the first author because he contributed in a special way to the history of the travel literature. Once the work of the others has been presented, there will be a brief conclusion to compare the variants presented.En la historia de la literatura de viajes española, la década de los años cuarenta del siglo XIX ocupa un lugar particular: después de las guerras napoleónicas y de la primera guerra carlista, se produce una relativa calma que no sólo favorece los viajes de los extranjeros hacia España, sino también los de los españoles hacia el exterior de la península ibérica. Entre las posibilidades más atractivas se encuentran Francia, Bélgica, los Países Bajos y Alemania. La diversidad de los textos disponibles permite distinguir al menos tres variantes o perspectivas: el relato como descubrimiento, como verificación y como manual de viaje. Este artículo se propone reflexionar sobre estas diversas perspectivas a partir de autores representativos, cuyos itinerarios son en parte semejantes: Modesto Lafuente, Ramón Mesonero Romanos y Ángel Fernández de los Ríos. Insistiremos en el primer autor por su especial contribución a la historia de la literatura viática y, una vez

  20. The process of interruption in Spanish judicial contexts. A pragmalinguistic approach / El proceso de interrupción en los contextos judidicales españoles

    Directory of Open Access Journals (Sweden)

    Susana Ridao Rodrigo

    2010-01-01

    Full Text Available Resumen: En este artículo nuestros objetivos se basan en analizar los contextos judiciales españoles desde una perspectiva pragmalingüística; más específicamente queremos hacer una contribución a los distintos estudios sobre el fenómeno de la (descortesía, en particular en el proceso de interrupción. El género del interrogatorio judicial se caracteriza por un cambio de hablante muy rápido, por ello creemos interesante analizar este género enfocando nuestra atención en las interrupciones. Así, después de una pequeña introducción, comentamos estudios que están relacionados con este tema y ofrecemos una sistematización de las interrupciones más peculiares que tienen lugar en los contextos legales, basando nuestra argumentación en la taxonomía ofrecida en Bañón (1997. Finalizamos el artículo con una conclusión general: las interrupciones que tienen lugar durante los interrogatorios se consideran más o menos descorteses en función del papel del interruptor.Summary: In this paper our aims are based on the analysis of Spanish judicial contexts from a pragmalinguistic perspective; more specifically we want to make a contribution to the various studies on the phenomenon of (impoliteness, particularly the process of interruption. The genre of judicial interrogation is characterized by a rapid change of speaker, so we believe it interesting to analyse this genre focusing our attention on interruptions. Thus, after a brief introduction, we comment on studies that are related to the topic and we offer a systematization of more peculiar interruptions that take place in legal contexts, basing our argument on Bañón's taxonomy (1997. We end the paper with a general conclusion: Interruptions which occur during interrogations are considered rather rude depending on the role of the interrupter.

  1. Revisión de los trabajos publicados sobre promoción de la salud en jóvenes españoles

    Directory of Open Access Journals (Sweden)

    Hernán García Mariano

    2001-01-01

    Full Text Available El objetivo de este estudio ha sido revisar las intervenciones de promoción de la salud dirigidas a jóvenes españoles, publicadas entre los años 1995 y 2000 en español, y describirlas de acuerdo al ámbito en el que se han desarrollado, los temas a los que se han dirigido, la metodología y el diseño de evaluación utilizados y los resultados obtenidos. Se identificaron 214 intervenciones. Las drogas ilegales fueron el tema en el que se centraron el mayor número de intervenciones (29,8%, seguido por el alcohol (15,9%, las conductas sexuales de riesgo (14,6% y el ocio (12,6%. Las actividades realizadas con mayor frecuencia fueron: técnicas educativas participativas (30,7%, técnicas educativas expositivas (11,5% y elaboración de materiales educativos (11%. En el 80,8% de casos había constancia de que se había realizado una evaluación. De ellas, las más frecuente fueron las evaluaciones de proceso (73,7%, y las menos frecuente las evaluaciones de resultados a medio-largo plazo (2,2%. Las metodologías de evaluación más utilizadas fueron los cuestionarios (28,2%. La combinación de técnicas cualitativas y cuantitativas fue utilizada en el 13,2% de los casos. Las 4 intervenciones en las que se midió el impacto a medio-largo plazo tenían como objetivo la prevención o reducción del consumo de tabaco y/o alcohol y/o cánnabis, y todas ellas consiguieron reducir el consumo de tabaco. En conclusión, parece necesario mejorar el diseño evaluativo de las intervenciones de promoción de la salud dirigidas a jóvenes en nuestro país y aumentar la difusión de las mismas mediante su publicación.

  2. Retratos de Españoles ilustres con un epítome de sus vidas. Orígenes y gestación de una empresa ilustrada

    Directory of Open Access Journals (Sweden)

    Molina, Álvaro

    2016-03-01

    Full Text Available Published from the early 1790s in order to celebrate the memory of the great heroes of the nation, the Españoles ilustres series is one of the most ambitious projects of the Age of Enlightenment in the field of engraving. This article provides unpublished documentation and new information regarding the conception of the project, the international references that served as models and the complete dating of the sales for the various installments of the series.Publicada a partir de la década de los años noventa con el fin de celebrar la memoria de los grandes héroes de la nación, la colección de Retratos de Españoles ilustres es una de las empresas al servicio del grabado más ambiciosas del siglo de las Luces. Este artículo aporta documentación inédita y nuevas noticias respecto a su concepción, los referentes internacionales que le sirvieron como modelo y la datación de la venta de todos los cuadernos de la serie.

  3. La contribucion de los lingüistas españoles al Coloquio "Latin vulgaire – latin Tardif III” III" Innsbruck, 2-5 IX 1991, Aetas editadas por Maria Iliescu y Werner Marxgut, Niemeyer, Tübingen 1992

    Directory of Open Access Journals (Sweden)

    Pavao Tekavčić

    1993-12-01

    Full Text Available El llamado "látin vulgar", tardío y medieval sigue siendo uno de los temas centrales de la lingüistica tanto latina como románica y una prueba son los coloquios internacionales dedicados a este dominio científico: el primer coloquio organizado en Pécs en 1985, el segundo en Bologna en 1988 y el tercero en Innsbruck en 1991 (el cuarto es previsto en Caen, en 1994. En estas páginas queremos presentar y comentar las contribuciones de los lingiiistas españoles, especialistas de filología latina, que han participado al último coloquio. La contribución española es algo modesta, ya que de las treinta comunicaciones presentadas solamente cuatro son de filólogos españoles (frente a catorce en alemán y doce en francés. Sin embargo, las ponencias españolas son de evidente interes tanto latino como románico.

  4. Análisis de clúster de la actividad física y las conductas sedentarias de los adolescentes españoles, correlación con la salud biopsicosocial

    Directory of Open Access Journals (Sweden)

    Pilar Ramos

    2012-01-01

    Full Text Available Esta investigación forma parte de la edición 2006 del estudio Health Behavior in School-aged Children (HBSC. Los datos que se presentan constituyen una muestra de 21811 adolescentes españoles de 11 a 18 años. Realizando análisis de clúster, Modelo Lineal General, pruebas de significación y tamaños de efecto, se obtiene información relevante acerca de los hábitos de actividad física y sedentarismo de los adolescentes españoles, evidenciando la situación de riesgo de los adolescentes mayores, especialmente en el caso de las chicas. Estos resultados tienen la fortaleza de relacionarse con una puntuación global de salud, obteniéndose indicadores claros de las ventajas que supone para los adolescentes un estilo de vida activo. Además, estos datos aportan información de interés en relación con la hipótesis de desplazamiento, muy discutid a en la literatura científica. En definitiva, este trabajo aporta claves interesantes para el debate teórico y para la intervención práctica en el campo de la actividad física durante la adolescencia.

  5. Long-term efficacy and safety of α1 proteinase inhibitor treatment for emphysema caused by severe α1 antitrypsin deficiency: an open-label extension trial (RAPID-OLE).

    Science.gov (United States)

    McElvaney, Noel G; Burdon, Jonathan; Holmes, Mark; Glanville, Allan; Wark, Peter A B; Thompson, Philip J; Hernandez, Paul; Chlumsky, Jan; Teschler, Helmut; Ficker, Joachim H; Seersholm, Niels; Altraja, Alan; Mäkitaro, Riitta; Chorostowska-Wynimko, Joanna; Sanak, Marek; Stoicescu, Paul I; Piitulainen, Eeva; Vit, Oliver; Wencker, Marion; Tortorici, Michael A; Fries, Michael; Edelman, Jonathan M; Chapman, Kenneth R

    2017-01-01

    Purified α1 proteinase inhibitor (A1PI) slowed emphysema progression in patients with severe α1 antitrypsin deficiency in a randomised controlled trial (RAPID-RCT), which was followed by an open-label extension trial (RAPID-OLE). The aim was to investigate the prolonged treatment effect of A1PI on the progression of emphysema as assessed by the loss of lung density in relation to RAPID-RCT. Patients who had received either A1PI treatment (Zemaira or Respreeza; early-start group) or placebo (delayed-start group) in the RAPID-RCT trial were included in this 2-year open-label extension trial (RAPID-OLE). Patients from 22 hospitals in 11 countries outside of the USA received 60 mg/kg per week A1PI. The primary endpoint was annual rate of adjusted 15th percentile lung density loss measured using CT in the intention-to-treat population with a mixed-effects regression model. This trial is registered with ClinicalTrials.gov, number NCT00670007. Between March 1, 2006, and Oct 13, 2010, 140 patients from RAPID-RCT entered RAPID-OLE: 76 from the early-start group and 64 from the delayed-start group. Between day 1 and month 24 (RAPID-RCT), the rate of lung density loss in RAPID-OLE patients was lower in the early-start group (-1·51 g/L per year [SE 0·25] at total lung capacity [TLC]; -1·55 g/L per year [0·24] at TLC plus functional residual capacity [FRC]; and -1·60 g/L per year [0·26] at FRC) than in the delayed-start group (-2·26 g/L per year [0·27] at TLC; -2·16 g/L per year [0·26] at TLC plus FRC, and -2·05 g/L per year [0·28] at FRC). Between months 24 and 48, the rate of lung density loss was reduced in delayed-start patients (from -2·26 g/L per year to -1·26 g/L per year), but no significant difference was seen in the rate in early-start patients during this time period (-1·51 g/L per year to -1·63 g/L per year), thus in early-start patients the efficacy was sustained to month 48. RAPID-OLE supports the continued efficacy of A1PI in slowing disease

  6. Libros españoles

    Directory of Open Access Journals (Sweden)

    Helcías Martán Góngora

    1968-10-01

    Full Text Available El viaje a través de los libros depara sorpresas semejantes a las que la geografía regala al romero, que cruza por valles y montañas. Así puedo zarpar de la mano de El principito de Antoine de Saint-Exupery, demorarme por una Temporada en el infierno con J. A. Rimbaud, detener el paso ante El muro inicial de Jean Paul Sartre. Mas ahora debo asistir a la cita previa con El príncipe de este mundo, el ensayo medular de José María Souvirón, cuyo subtítulo: La literatura moderna y el demonio sitúa al lector ante un tema que si bien mueve a risa a los escépticos, involucra en sus páginas lo más representativo de la narrativa y la poesía contemporáneas.

  7. Kas oled Internetis? / Clive Bonnici

    Index Scriptorium Estoniae

    Bonnici, Clive

    2016-01-01

    Noorsootöös peaks kasutama internetti, et noortega suhteid luua. Pideva dialoogi kaudu saab noori juhendada ja motiveerida, et nad oma eesmärke saavutaksid. Rääkides nende keelt ja tundes nende elustiili, saame nende kohta rohkem teada

  8. OLED devices with internal outcoupling

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Jr., Jie Jerry; Sista, Srinivas Prasad; Shi, Xiaolei; Zhao, Ri-An; Chichak, Kelly Scott; Youmans, Jeffrey Michael; Janora, Kevin Henry; Turner, Larry Gene

    2016-12-06

    Optoelectronic devices with enhanced internal outcoupling include a substrate, an anode, a cathode, an electroluminescent layer, and an electron transporting layer comprising inorganic nanoparticles dispersed in an organic matrix.

  9. Review of Fray Toribio de Benavente, Motolinía, «Historia de los indios de la Nueva España», ed. Mercedes Serna y Bernat Castany, Madrid, Real Academia Española/Centro para la Edición de los Clásicos Españoles, 2014, 439 pp., ISBN 978-84-617-0715-74

    OpenAIRE

    Blanca Oteiza Pérez

    2016-01-01

    Review of Fray Toribio de Benavente, Motolinía, «Historia de los indios de la Nueva España», ed. Mercedes Serna y Bernat Castany, Madrid, Real Academia Española/Centro para la Edición de los Clásicos Españoles, 2014, 439 pp., ISBN 978-84-617-0715-74

  10. Signature of the WLCG Memorandum of Understanding between Norway and CERN by Ole Henrik Ellestad, Director of the Research Council of Norway and the Chief Scientific Officer J. Engelen with C. Eck, S. Foffano and B. Jacobsen on 13 December 2007.

    CERN Multimedia

    Maximilien Brice

    2007-01-01

    Signature of the WLCG Memorandum of Understanding between Norway and CERN by Ole Henrik Ellestad, Director of the Research Council of Norway and the Chief Scientific Officer J. Engelen with C. Eck, S. Foffano and B. Jacobsen on 13 December 2007.

  11. Grupos españoles de cálculos ab initio de moléculas de interés astrofísico

    Science.gov (United States)

    Yáñez, M.

    grupos españoles han llevado, y siguen llevando a cabo, sobre sistemas débilmente enlazados, como complejos de Van der Waals o complejos por enlace de hidrógeno, que sin duda juegan un papel importante tanto en medios atmosféricos como interestelares.

  12. Españoles fuera de España. Historia y memoria de la última ola migratoria española (1945-1980

    Directory of Open Access Journals (Sweden)

    María José Fernández Vicente

    2007-09-01

    Full Text Available Les années 1980 furent marquées par la transformation d’une Espagne pays d’émigration en une Espagne accueillant des milliers d’immigrés. Submergée et souvent dépassée par cette réalité, nouvelle et conflictuelle, la société espagnole semble avoir oublié que l’Espagne avait été, jusque récemment, une « terre d’émigrants ». Ce travail a ainsi comme but de récupérer une partie de cette histoire-mémoire concernant la dernière vague migratoire espagnole. Prenant comme point de départ l’extrême richesse et complexité des sources orales, nous tenterons de reconstituer les raisons ayant poussé une partie des Espagnols à l’émigration. Face à l’impossibilité d’embrasser la totalité du flux migratoire, nous avons opté par une comparaison des deux destinations principales du flux : l’Argentine pour la période où l’émigration se dirigeait massivement vers des destinations d’Outre-mer (1945-1955, et la France pour la période dite « continentale » (1956-1980.Los años 80 asistieron a la transformación de una España que «emigraba» en una España que acogía a miles de inmigrantes. Sumida, y a menudo desbordada por esta nueva y conflictiva realidad social, la sociedad española parece haber olvidado que, hasta hace muy poco, España fue, esencialmente, «tierra de emigrantes». Por ello, este trabajo se propone contribuir a recuperar una parte de la historia-memoria de la última ola migratoria española. Partiendo de la riqueza y complejidad de las fuentes orales, se tratará de reconstituir las razones que empujaron a una parte de estos españoles a emigrar. Pero ante la imposibilidad de abarcar la totalidad del flujo migratorio, se optará por una comparación entre sus dos destinos principales : Argentina, para la etapa «ultramarina» (1945-1955 y Francia para la fase «continental» (1956-1980.The’80s have seen Spain transformed from an “Emigration country” to an

  13. Influencia de la carrera investigadora en la productividad e impacto de los investigadores españoles. El papel de la ventaja acumulativa

    Directory of Open Access Journals (Sweden)

    García-Romero, Antonio

    2012-03-01

    Full Text Available Careers in research can have a significant effect on the chances of scientists’ success. This effect, also known as cumulative advantage, contributes to skewing the unequal distribution of both production and impact among scientists. This paper focuses on determining whether the cumulative advantage is present within a sample of 174 Spanish scientists doing research in four major areas (i.e.: physics, chemistry, biology and biochemistry. In order to determine the impact of their careers in research, we specify a multi-equational model. Among other variables, we include those related with their doctoral training, the postdoctoral period and the quality of the departments where scientists are hired after they finish their post doctoral work. Moreover, the model includes a group of hypotheses gathered from a survey of the literature on this topic. The model is based on the Path Analysis technique. We also have developed a method to determine the quality of academic departments using a single scale suitable for any country and discipline. The main result confirms the existence of cumulative advantage being the predoctoral productivity the main determinant of productivity during the ten years after obtaining the doctor degree. Finally, a bias in productivity and impact in favour of men is observed.

    La carrera investigadora puede tener un efecto relevante sobre las opciones de éxito profesional de los investigadores. Dicho efecto, conocido como ventaja acumulativa, contribuiría a agudizar la desigual distribución de la productividad y el impacto entre los investigadores. Este trabajo se centra en determinar la presencia de ventaja acumulativa en una muestra de 174 investigadores españoles de cuatro áreas de conocimiento (Física, Química, Biología y Bioquímica. Para contrastar el efecto de la carrera investigadora se especifica un modelo multiecuacional que incluye variables sobre la formación pre y posdoctoral así como con los

  14. La gestión de información en las sedes web de los ayuntamientos españoles

    Directory of Open Access Journals (Sweden)

    Chaín Navarro, Celia

    2008-12-01

    Full Text Available Spain’s authorities have become more agile since the generalisation of the Internet, the use of which has significantly improved the ways in which they communicate with the country’s citizens and companies. The subjects of this study were the websites produced by the Town Councils of Spain’s provincial capitals as well as those of the autonomous cities Ceuta and Melilla. Their content and the personnel in charge of their creation, development, maintenance and updating were all examined. A questionnaire was designed to study the content of and the services offered by these charged with the technical and content management of these sites were identified by a multiple choice-type questionnaire sent by e-mail and fax to those responsible for these new services. Thirty three of the 52 councils contacted responded. The results show that at the municipal level Spain is still in the phase of making information available, with some local governments moving faster than others towards an ‘electronic administration’. Nonetheless, the country is still far from working by ‘electronic government’.

    La Administración electrónica española ha experimentado un considerable avance desde la generalización de Internet, que ha facilitado que los procesos de comunicación de ciudadanos y empresas con las Administraciones Públicas hayan dado un considerable giro. El estudio realizado ha tenido como objetivo los webs de los ayuntamientos españoles de las ciudades capitales de provincia y de las dos ciudades autónomas (Ceuta y Melilla, y en concreto qué contenidos se ofrecen y quiénes se encargan de su creación, desarrollo, mantenimiento y actualización. Así, para el estudio sobre los contenidos y servicios que ofrecen los websites se elaboró un cuestionario aplicado mediante observación directa. Y para conocer quiénes se encargan de la gestión técnica del website y de la gestión de los contenidos se confeccion

  15. Utilización de micronutrientes en nutrición parenteral en los hospitales españoles Micronutrient supplementation in parenteral nutrition in Spanish hospitals

    Directory of Open Access Journals (Sweden)

    A. Fernández-Ferreiro

    2011-06-01

    Full Text Available Hace años se recomendó no añadir conjuntamente vitaminas y oligoelementos a las nutriciones parenterales (NP y administrarlas inmediatamente después de la adición de los micronutrientes para evitar su degradación. Actualmente se ha visto que con bolsas multicapa, mezclas ternarias y fotoprotección la degradación de vitaminas es mínima. El aporte diario de micronutrientes es necesario al menos en pacientes críticos, malnutridos o con NP a largo plazo. Con el objetivo de conocer las pautas de utilización de los micronutrienes en NP en los hospitales españoles y la forma de preparación de las bolsas de NP, en relación a los factores condicionantes de su estabilidad, se realizó una encuesta telefónica a los farmacéuticos responsables del área de NP de los diferentes hospitales. Los datos obtenidos se compararon con otras encuestas realizadas en 2001 y 2003. Respondieron la encuesta 97 hospitales de los 110 hospitales a los que se llamó (tasa de respuesta 88%, cuyo número de camas estaba comprendido entre 104 y 1728. En comparación con los datos de años anteriores se observa una mayor adecuación a las recomendaciones vigentes, aunque todavía casi un 30% de los hospitales aportan los micronutrientes en días alternos con independencia de la situación clínica del paciente. La mayoría de los hospitales utilizan bolsas multicapa y/o fotoprotección y mezclas ternarias. A la vista de los resultados, en los que se pone en evidencia la disparidad de criterios en la administración de vitaminas y oligoelementos en las soluciones de NP parece necesario elaborar documentos de consenso que se adecuen a la realidad de las distintas prácticas además de favorecer la realización de estudios clínicos minuciosamente diseñados para establecer los requerimientos en situaciones clínicas especiales.Several years ago, it was recommended not to add vitamins or oligoelements to parenteral nutrition (PN solutions and to administer them

  16. Trascendencia de los artistas levantinos españoles en la formación de la academia de San Carlos en México o el predominio del Barroco.

    OpenAIRE

    ESPARZA CASTILLO, ANTONIO

    2008-01-01

    La tesis "Trascendencia de los artistas levantinos españoles en la formación de la Academia de San Carlos de México o el predominio del Barroco" está dirigida a estudiar tres aspectos fundamentales: el análisis de la fundación y formación de la Real Academia de las Tres Nobles Artes de San Carlos en México, el hecho insólito de que muchos artistas de una sola región española vinieran a México para aportar su capacidad creadora en el desarrollo de la misma, y la fata de éxito de ese centro edu...

  17. Presencia del streaming, mixture e inclusion en los centros educativos españoles de primaria y secundaria. Resultados de la encuesta nacional del proyecto I+D, MIXSTRIN

    Directory of Open Access Journals (Sweden)

    Asunción Cifuentes García

    2012-01-01

    Full Text Available La investigación i +D+ i , Formas de agrupación del alumnado y su relación con el éxito escolar: "Mixture", "Streaming" e Inclusion (2009-2011 ha aportado un análisis cuantitativo y cualitativo sobre la presencia de estas modalidades de agrupación de alumnado en los centros españoles de educación primaria y secundaria. Los resultados cuantitativos reflejan que las prácticas que se dan con mayor incidencia son las de streaming. Los estudios de caso demuestran que los centros que implementan el modelo de inclusión con el uso de recursos de la comunidad para el trabajo con grupos heterogéneos consiguen una clara mejora de aprendizajes y rendimiento académico.

  18. Detection of genome donor species of neglected tetraploid crop Vigna reflexo-pilosa (créole bean), and genetic structure of diploid species based on newly developed EST-SSR markers from azuki bean (Vigna angularis).

    Science.gov (United States)

    Chankaew, Sompong; Isemura, Takehisa; Isobe, Sachiko; Kaga, Akito; Tomooka, Norihiko; Somta, Prakit; Hirakawa, Hideki; Shirasawa, Kenta; Vaughan, Duncan A; Srinives, Peerasak

    2014-01-01

    Vigna reflexo-pilosa, which includes a neglected crop, is the only one tetraploid species in genus Vigna. The ancestral species that make up this allotetraploid species have not conclusively been identified, although previous studies suggested that a donor genome of V. reflexo-pilosa is V. trinervia. In this study, 1,429 azuki bean EST-SSR markers were developed of which 38 EST-SSR primer pairs that amplified one product in diploid species and two discrete products in tetraploid species were selected to analyze 268 accessions from eight taxa of seven Asian Vigna species including V. reflexo-pilosa var. glabra, V. reflexo-pilosa var. reflexo-pilosa, V. exilis, V. hirtella, V. minima, V. radiata var. sublobata, V. tenuicaulis and V. trinervia to identify genome donor of V. reflexo-pilosa. Since both diploid and tetraploid species were analyzed and each SSR primer pair detected two loci in the tetraploid species, we separated genomes of the tetraploid species into two different diploid types, viz. A and B. In total, 445 alleles were detected by 38 EST-SSR markers. The highest gene diversity was observed in V. hirtella. By assigning the discrete PCR products of V. reflexo-pilosa into two distinguished genomes, we were able to identify the two genome donor parents of créole bean. Phylogenetic and principal coordinate analyses suggested that V. hirtella is a species complex and may be composed of at least three distinct taxa. Both analyses also clearly demonstrated that V. trinervia and one taxon of V. hirtella are the genome donors of V. reflexo-pilosa. Gene diversity indicates that the evolution rate of EST-SSRs on genome B of créole bean might be faster than that on genome A. Species relationship among the Vigna species in relation to genetic data, morphology and geographical distribution are presented.

  19. La primera organización de jóvenes proletarios españoles: las juventudes socialistas de España o el fracaso de una alternativa juvenil de clase (1903- 1921

    Directory of Open Access Journals (Sweden)

    Antonio GONZÁLEZ QUINTANA

    2010-03-01

    Full Text Available RESUMEN: Pretender, en el breve espacio de un artículo, analizar la trayectoria de la organización de los jóvenes socialistas españoles, en sus diversas etapas, sería prácticamente imposible. Son ochenta y cinco años de historia y de experiencias que requerirían, para estudiarlos a fondo, algo más que una tesis doctoral. Lamentablemente, la historiografía sobre las organizaciones contemporáneas de jóvenes españoles es muy pobre y no podemos remitir a ninguna obra de consulta que sirva de marco de referencia, pero ese es un problema que no podemos, ni pretendemos, resolver en estas páginas. Por ello, hemos optado por ceñirnos, en este trabajo, al origen y los fundamentos de la organización y sólo a sus primeros años, por cuanto de tal estudio, creemos, se pueden deducir hipótesis para, posteriormente, acometer una investigación más profunda sobre la Federación de Juventudes SociaHstas de España en sus distintas etapas. Nos interesa, sobre todo, definir el modelo organizativo surgido, sus bases ideológicas, sus objetivos, su dependencia de la organización de adultos (el Partido Socialista Obrero Español, su proyección e incidencia social, su composición y su fuerza numérica; todo ello visto desde el punto de vista de un colectivo de jóvenes, es decir, de un grupo de edad restringido.

  20. El marqués de Cervera y el derecho de los cubanos fieles a ser ciudadanos españoles después del 98

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    Díaz Hernández, Magdalena

    2008-12-01

    Full Text Available After the Paris Treaty in 1898, Spain refused Cubans who had supported it in the Independence War of the last Spanish colonies, their wish and right of keep on being Spanish citizens. As a consequence, they also lost their wages. That was the reason why the marques of Cervera defended them, writing a Manifiesto to the regent Queen and the Spanish Court in 1901, in which he proclaims the historical and cultural identity that Spain and Cuba had shared, like the best lure to make possible the recovery of their rights as older Spanish citizens, still living in Cuba.

    Tras la firma del Tratado de París de 1898, España negó con fórmulas jurídicas el deseo y el derecho de los nacidos en Cuba que la habían apoyado durante la guerra de Independencia de las últimas colonias, a seguir siendo ciudadanos españoles y, por lo tanto, a percibir sus sueldos ganados al servicio de España. Por este motivo, el marqués de Cervera se erigió en defensor de éstos, escribiendo un Manifiesto que remitió a la reina regente y a las Cortes en 1901, en el que proclama la identidad histórica y cultural compartida entre España y Cuba, para hacer posible la recuperación de sus derechos como antiguos ciudadanos españoles, que siguieron residiendo en la isla de Cuba.

  1. Adecuación de la ingesta de vitamina K en una muestra representativa de adultos españoles: condicionantes dietéticos

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    Rosa M.ª Ortega Anta

    2014-01-01

    Full Text Available Fundamentos: La vitamina K es un elemento esencial en la coagulación, que también participa en reacciones de gama-carboxilación de proteínas como la osteocalcina, pudiendo ejercer un papel protector frente a la pérdida ósea relacionada con la edad. También hay evidencias de que tanto la osteocalcina como la vitamina K pueden ejercer un beneficio en el metabolismo de la glucosa, sensibilidad a la insulina y diabetes tipo 2. Por ello, el objeto del presente estudio es analizar la adecuación de la ingesta de vitamina K y sus fuentes dietéticas en una muestra representativa de adultos españoles. Métodos: Se ha estudiado un colectivo de 1068 adultos (521 varones y 547 mujeres de 17 a 60 años, seleccionados en diez provincias españolas, que constituyen una muestra representativa de la población, a nivel nacional. El estudio dietético se realizó por "Registro del consumo de alimentos" durante 3 días consecutivos, incluyendo un domingo, recogiendo también datos personales, sanitarios y antropométricos de los individuos estudiados. Resultados: El aporte de vitamina K (170,2 ± 14,5 μg/día fue menor a las ingestas adecuadas marcadas para la vitamina en el 30,2% de los estudiados. Se observa un aumento en la ingesta de la vitamina con la edad (r = 0,201, p < 0,05, de hecho las personas que alcanzan las ingestas adecuadas tienen mayor edad (34,5 ± 12,8 años que las que no alcanzan estas ingestas adecuadas (con edad media de 29,1 ± 11,9 años (p < 0,001. La ingesta de vitamina K también aumenta con el peso (r = 0,106, p < 0,05 y con la talla (r = 0,282, p < 0,05, sin embargo los individuos con sobrepeso/ obesidad tienen una ingesta (168,2 ± 13,5 μg/día, significativamente inferior a la observada en individuos con menor peso (171,1 ± 14,9 μg/día (p < 0,01. La principal fuente alimentaría de vitamina K son las verduras (un 45,35% de la ingesta procede de este grupo de alimentos, aunque también se pueden citar como fuentes de la

  2. The Norden Associations and International Efforts to Change History Education, 1919-1970: International Organisations, Education, and Hegemonic Nationalism

    Science.gov (United States)

    Elmersjö, Henrik Åström

    2015-01-01

    During the interwar period, a number of organisations started to look into education as part of an attempt to understand how nationalism was fuelled through education and to what extent it had forced the outbreak of the Great War. In response to nationalism and a perceived need for reformation of national narratives, the school subjects of history…

  3. The Norden Associations and International Efforts to Change History Education, 1919-1970: International Organisations, Education, and Hegemonic Nationalism

    Science.gov (United States)

    Elmersjö, Henrik Åström

    2015-01-01

    During the interwar period, a number of organisations started to look into education as part of an attempt to understand how nationalism was fuelled through education and to what extent it had forced the outbreak of the Great War. In response to nationalism and a perceived need for reformation of national narratives, the school subjects of history…

  4. FOKUS: NORDEN OG KINA «Smått er godt» Islands økonomiske diplomati med Kina

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    Marc Lanteigne

    2016-09-01

    Full Text Available Although Iceland has a shorter diplomatic history with China in comparison with the other Nordic states, the island nation has built a strong relationship with Beijing which has been dominated by economics, especially the bilateral free trade agreement struck in 2013. Although Iceland is not a major factor in Chinese trade, the Sino-Icelandic relationship has demonstrated China's commitment to small state diplomacy and Arctic relations.

  5. The Nordic Countries interests in principles for international greenhouse gas agreements; Nordens interesser i principper for internationale drivhusgasaftaler

    Energy Technology Data Exchange (ETDEWEB)

    Halsnaes, K.; Meyer, H.; Stephensen, P.; Soerensen, L.

    1995-01-01

    The focus of this report is the interests of the Nordic countries in international agreements on greenhouse gases. The subject is approached mainly from an economic point of view. Introductory, the climate convention are described, with special attention to obligations to emission reductions. Important discussion points are timing of the reductions as well as the question of meeting the reductions by cooperation with other countries through joint-implementation projects. The different attitudes of the Nordic countries to these issues are discussed. In the following, the technical and economic possibilities for meeting the reduction objectives of each country are described. For this purpose, governmental plans and studies (on bottom-up as well as top-down studies) are brought into focus. A discussion of the differences and similarities of the methodology of the studies are carried out. Finally, the report focuses on costs of reducing emissions in the Nordic countries. A comparison between the different Nordic countries, as well as between the Nordic countries and the other OECD countries is done. The analysis points out, that the Nordic countries are characterized by relatively high costs in general. Another conclusion is, that the costs of reduction after the year 2000/2005 are much lower than costs of reductions in the short run. An exception to this is Denmark. This points out, that some Nordic countries prefer emission reductions through joint-implementation projects in other countries, rather than reductions through restrictive agreements in the sort run. (au) (29 tabs., 28 ills., 45 refs.)

  6. Empatía, habilidades de colaboración interprofesional y aprendizaje médico permanente en residentes españoles y latinoamericanos que inician los programas de formación médica especializada en España. Resultados preliminares

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    Montserrat San-Martín

    2017-01-01

    Conclusiones: Los resultados confirman observaciones preliminares y ponen en evidencia la asociación positiva que existe entre la empatía y las habilidades de trabajo colaborativo interprofesional. En médicos latinoamericanos que inician su formación en hospitales españoles, el mayor desarrollo de las habilidades de aprendizaje médico permanente parece influir positivamente en el desarrollo de otras competencias de interés profesional.

  7. Review of Fray Toribio de Benavente, Motolinía, «Historia de los indios de la Nueva España», ed. Mercedes Serna y Bernat Castany, Madrid, Real Academia Española/Centro para la Edición de los Clásicos Españoles, 2014, 439 pp., ISBN 978-84-617-0715-74

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    Blanca Oteiza Pérez

    2016-05-01

    Full Text Available Review of Fray Toribio de Benavente, Motolinía, «Historia de los indios de la Nueva España», ed. Mercedes Serna y Bernat Castany, Madrid, Real Academia Española/Centro para la Edición de los Clásicos Españoles, 2014, 439 pp., ISBN 978-84-617-0715-74

  8. Patterns of sedentary behavior and compliance with public health recommendations in Spanish adolescents: the AFINOS study Patrones de sedentarismo y cumplimiento de las recomendaciones de salud pública en adolescentes españoles: estudio AFINOS

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    David Martínez Gómez

    2012-12-01

    Full Text Available The aims of the present study were: (i describe patterns of sedentary behavior in Spanish adolescents; and (ii determine the proportion of adolescents that do not meet the public health recommendations for sedentary behavior. This study comprised 1,724 Spanish adolescents (882 girls, aged 13 to 16 years. Patterns of sedentary behavior (TV viewing, use of computer games, console games and surfing the Internet were assessed using the HELENA sedentary behavior questionnaire. The total proportion of adolescents watching TV, using computer and console games, and surfing the internet for more than two hours daily was 24%, 9%, 7%, and 17%, respectively, on weekdays, and 50%, 22%, 16%, and 35%, respectively, on weekends. Over 63% of the adolescents from the study did not meet the recommendation for sedentary behavior (Los objetivos del estudio son: (i describir los patrones de comportamiento sedentario en adolescentes españoles y (ii establecer cuántos de ellos no cumplen las recomendaciones de salud pública sobre comportamiento sedentario. Participaron 1.724 adolescentes españoles (882 chicas entre 13 y 16 años. Los patrones de comportamiento sedentario (ver la televisión, juegos de ordenador, videojuegos y navegar en Internet fueron evaluados a través del cuestionario HELENA. La proporción total de adolescentes que ven la TV, usan juegos de ordenador o de consola y navegan en Internet durante > 2h los días de diario fue del 24%, 9%, 7% y 17%, respectivamente. Durante los fines de semana, la proporción fue del 50%, 22%, 16% y 35%. Más del 63% del total de la muestra no cumplen las recomendaciones de tiempo sedentario total < 2 horas durante los días de diario y el 87% no lo hace en días del fin de semana. Dado que las conductas sedentarias podrían ser relevantes en la salud de los adolescentes, las intervenciones de salud pública son necesarias en España.

  9. Grado de cumplimiento de la legislación e impartición de enseñanzas anti-tabaco en los centros escolares españoles

    Directory of Open Access Journals (Sweden)

    Hernández-Mezquita Miguel Angel

    2000-01-01

    Full Text Available Fundamento: No se dispone de estudios que analicen el cumplimiento de la legislación antitabaco en los centros escolares españoles, por lo que nos propusimos conocer el grado de cumplimiento de la legislación oficial anti-tabaco en dichos centros y la influencia que ello tiene sobre el porcentaje de alumnos fumadores. Método: Se realizó una encuesta entre 3.050 directores de centros educativos españoles, a los que se les preguntó sobre diversos aspectos del cumplimiento de la legislación oficial anti-tabaco en los centros y sobre las principales características del consumo de tabaco en los mismos. Resultados: El 80,9% de los directores afirman que en sus centros se exige el cumplimiento de la legislación y el 64,9% disponen de carteles que advierten de la prohibición de fumar. Afirman impartir enseñanzas anti-tabaco el 82,2% de los centros en los que se exige la legislación y en el 64,8% de los centros en los que esta legislación no se exige. Creen que el porcentaje de profesores que fuman ante los alumnos es del 5,9% en los centros en que se exige la legislación y del 12,9% en los que no se cumple. En los centros donde se imparten enseñanzas anti-tabaco creen que han probado el tabaco el 29% de los alumnos, frente al 31% que creen lo han hecho en los centros donde no se imparten estas enseñanzas (p<0,001. Conclusiones: El cumplimiento de la legislación es insuficiente. Los directores de los centros educativos, como encargados de velar por el cumplimiento de la legislación oficial anti-tabaco en sus centros, deben exigir el cumplimiento de esta legislación, ya que esta medida es eficaz para mejorar el funcionamiento global de los centros y para reducir los porcentajes de alumnos y profesores fumadores.

  10. Grado de cumplimiento de la legislación e impartición de enseñanzas anti-tabaco en los centros escolares españoles

    Directory of Open Access Journals (Sweden)

    Miguel Ángel Hernández Mezquita

    2000-01-01

    Full Text Available Fundamento: No se dispone de estudios que analicen el cumplimiento de la legislación antitabaco en los centros escolares españoles, por lo que nos propusimos conocer el grado de cumplimiento de la legislación oficial anti-tabaco en dichos centros y la influencia que ello tiene sobre el porcentaje de alumnos fumadores. Método: Se realizó una encuesta entre 3.050 directores de centros educativos españoles, a los que se les preguntó sobre diversos aspectos del cumplimiento de la legislación oficial anti-tabaco en los centros y sobre las principales características del consumo de tabaco en los mismos. Resultados: El 80,9% de los directores afirman que en sus centros se exige el cumplimiento de la legislación y el 64,9% disponen de carteles que advierten de la prohibición de fumar. Afirman impartir enseñanzas anti-tabaco el 82,2% de los centros en los que se exige la legislación y en el 64,8% de los centros en los que esta legislación no se exige. Creen que el porcentaje de profesores que fuman ante los alumnos es del 5,9% en los centros en que se exige la legislación y del 12,9% en los que no se cumple. En los centros donde se imparten enseñanzas anti-tabaco creen que han probado el tabaco el 29% de los alumnos, frente al 31% que creen lo han hecho en los centros donde no se imparten estas enseñanzas (p<0,001. Conclusiones: El cumplimiento de la legislación es insuficiente. Los directores de los centros educativos, como encargados de velar por el cumplimiento de la legislación oficial anti-tabaco en sus centros, deben exigir el cumplimiento de esta legislación, ya que esta medida es eficaz para mejorar el funcionamiento global de los centros y para reducir los porcentajes de alumnos y profesores fumadores.

  11. Steering the Properties of MoOx Hole Transporting Layers in OPVs and OLEDs: Interface Morphology vs. Electronic Structure

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    Wouter Marchal

    2017-01-01

    Full Text Available The identification, fine‐tuning, and process optimization of appropriate hole transporting layers (HTLs for organic solar cells is indispensable for the production of efficient and sustainable functional devices. In this study, the optimization of a solution‐processed molybdenum oxide (MoOx layer fabricated from a combustion precursor is carried out via the introduction of zirconium and tin additives. The evaluation of the output characteristics of both organic photovoltaic (OPV and organic light emitting diode (OLED devices demonstrates the beneficial influence upon the addition of the Zr and Sn ions compared to the generic MoOx precursor. A dopant effect in which the heteroatoms and the molybdenum oxide form a chemical identity with fundamentally different structural properties could not be observed, as the additives do not affect the molybdenum oxide composition or electronic band structure. An improved surface roughness due to a reduced crystallinity was found to be a key parameter leading to the superior performance of the devices employing modified HTLs.

  12. La comunicación de los diputados españoles a través de Internet = The communication of the members of the Congress of Deputies of Spain over Internet

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    Sánchez Matito, Manuel

    2016-05-01

    Full Text Available Resumen: Aunque Internet se presenta como un espacio que puede disminuir la distancia entre la ciudadanía y el poder político, los políticos todavía no han desarrollado de forma adecuada las posibilidades que ofrece el ciberespacio. Para comprobar esta situación hemos investigado la forma en que los diputados españoles de la décima legislatura se comunican a través de Internet, mostrando las peculiaridades que presenta la comunicación en cada una de las herramientas virtuales estudiadas y concluyendo que el grado de interacción a través de este medio es todavía bastante bajo = Abstract: Although Internet appears like a space that can shorten the range between the citizenship and the political power, politicians have still not developed the possibilities that the cyberspace offers. In order to verify this situation we have investigated the form in which Spanish parliamentarians of the X legislature communicate through Internet, showing the peculiarities that the communication displays in each one of the studied virtual tools and concluding that the interaction degree that unfolds through this means is still enough low.

  13. Relaciones entre factores sociodemográficos, motivación hacia el retiro temprano y satisfacción en la vida postlaboral: análisis exploratorio en una muestra prejubilados españoles

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    Juan José Fernández

    2008-01-01

    Full Text Available La prejubilación es una experiencia heterogénea en lo referente tanto a la forma en que se produce la salida laboral como a sus posteriores consecuencias personales y psicosociales. Con el objetivo de conocer la relación entre variables sociodemográficas, motivos de la salida organizacional temprana, y ajuste a la vida postlaboral se administró una adaptación del Retirement Satisfaction Inventory (Floyd et al., 1992 a una muestra de 638 prejubilados españoles con una media de edad de 61.28 años. Los datos obtenidos fueron analizados mediante ANOVA. Con respecto a la motivación hacia el retiro, las mujeres tienen más intereses en aceptar la oferta de retiro temprano que los hombres, mientras que estos señalan haber experimentado más problemas de salud y presiones organizacionales. Los prejubilados con un mayor nivel formativo presentan un mayor interés en el retiro temprano, y los prejubilados con mayor nivel profesional mantienen una mayor satisfacción con el retiro. Conocer las relaciones entre características sociodemográficas, motivación hacia el retiro temprano y satisfacción en la vida post-laboral es un primer paso necesario para desarrollar análisis más complejos sobre las experiencias de prejubilación.

  14. La intuición del análisis de redes de los militares españoles durante la guerra del Rif como método de lucha contra el contrabando de armas

    Directory of Open Access Journals (Sweden)

    Julián Antonio Paniagua López

    2016-06-01

    Full Text Available En este artículo se explica una de las estrategias que empleó el ejército español durante la guerra del Rif (1919-1926 para vigilar y evitar el contrabando de mercancías. Consistió en la vigilancia de determinados puntos y el camino que los unía, pero el sistema no estaba basado en el mapa concreto del territorio, sino en lo que en la actualidad se entiende como análisis de redes sociales, cuya primera obra propiamente dicha usando ese método fue publicada en 1934. Obviamente no fue una elaboración teórica ni sistemática en el análisis, sino una intuición del método, porque es muy improbable que los militares españoles de esa época hubieran recibido la formación correspondiente en la teoría matemática de grafos. Sin embargo, debido a la precisión de la información del contenido de los vínculos de cada nodo, la distinción de cuatro tipos de nodos y a la elaboración del gráfico, este trabajo debe ser considerado como precursor del método, al mismo nivel que el de otros precursores de la época

  15. La participación de los stakeholders en los destinos turísticos españoles: análisis de la situación actual

    Directory of Open Access Journals (Sweden)

    Diana Gómez Bruna

    2015-04-01

    Full Text Available La gobernanza se ha convertido, desde hace décadas, en un elemento clave para la planificación y gestión de los destinos turísticos. Su desarrollo efectivo y real depende de que exista un proceso participativo funcional de los diversos stakeholders presentes en los destinos y, es este ámbito, donde suelen aparecer ciertas dificultades. El presente artículo trata de evaluar la situación del proceso participativo en los destinos turísticos españoles, tanto de interior como costeros, a través de los resultados obtenidos tras la realización de diez grupos de discusión en nueve Comunidades Autónomas distintas. Los resultados reflejan, por tanto, los problemas existentes en cuanto a la participación de los stakeholders en los destinos turísticos y las posibles soluciones a las problemáticas planteadas.

  16. Anne Scott Sørensen, Ole Martin Høystad, Erling Bjurström and Halvard Vike Nye kulturstudier - En innføring, Oslo: Spartacus Forlag AS/Scandinavian Academic Press, 2008

    Directory of Open Access Journals (Sweden)

    Gösta Arvastson

    2009-10-01

    Full Text Available Nye kulturstudier [New Cultural Studies] is the first introduction to cultural studies in Scandinavia and an impressive presentation of the subject. The book aims to explain how cultural studies emerged as an interdisciplinary field in humanities and social sciences. Other introductions to cultural research in eth-nology and anthropology have been produced - but this one is different, since it is more comprehensive and am-bitious. Nye kulturstudier is the result of in-terdisciplinary collaboration between four colleagues from Norway, Sweden and Denmark. Senior lecturer Anne Scott Sørensen and Professor Ole Martin Høystad are affiliated to the Institute for Literature, Media and Cultural Studies at the University of Southern Denmark in Odense. Professor Erling Bjurström belongs to Tema Q at Linköping Uni-versity, and Professor Halvard Vike works at the Institute for Social Anthro-pology at Oslo University. The authors comment that they are oriented towards different subjects and educational pro-grammes at their respective universities. The book begins with a background to the theories and scientific traditions. This is followed by Cultural Analysis and Methodology, a chapter on Identity, Globalisation and Multiculturalism, one on Taste, Lifestyle and Consumption and, finally, by Nature, Body and Ex-perience Landscapes.

  17. Usos y tendencias adictivas de una muestra de estudiantes universitarios españoles a la red social Tuenti: la actitud positiva hacia la presencia de la madre en la red como factor protector

    Directory of Open Access Journals (Sweden)

    Mercedes Durán

    2015-01-01

    Full Text Available El objetivo de este trabajo fue estudiar, desde el paradigma de usos y gratificaciones, el uso que los estudiantes universitarios españoles (N = 221 hacen de la red social Tuenti, y en qué medida estos usos se asocian con sus niveles de adicción a dicha red social. Además se analizó el papel que los progenitores tienen como facilitadores o inhibidores de dichas tendencias adictivas y el impacto del género. Los resultados muestran cuatro categorías de usos de la red Tuenti: entretenimiento, comunicación a través del muro, comunicación a nivel privado e información social. Además, la actitud positiva hacia la presencia de la madre en la red Tuenti se muestra como un factor de protección de las tendencias adictivas a la red. Por último, se han encontrado diferencias estadísticamente significativas en función del género, tanto en los usos que realizan chicos y chicas, como en sus patrones de adicción a la red Tuenti, de tal manera que los chicos informan de niveles de adicción superiores a los informados por las chicas en el uso de esta red social.

  18. Una «hazaña prácticamente desconocida»: la participación de médicos militares españoles en la Primera Guerra Mundial

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    R. Navarro Suay

    2014-03-01

    Full Text Available La Primera Guerra Mundial fue un conflicto que tuvo lugar entre 1914 y 1918. Debido a la situación interna y en el exterior de España, el rey Alfonso XIII y el presidente Eduardo Dato decidieron mantener a nuestro país neutral. Sin embargo, se consiguió realizar una conducta «humanitariamente activa». Se creó la oficina pro cautivos, se colaboró con el comité internacional de la cruz roja, se enviaron observadores militares (entre ellos oficiales médicos al frente europeo y se autorizó la asistencia a refugiados alemanes en la Guinea Ecuatorial Española. El objetivo de este artículo es describir la labor realizada por los oficiales médicos españoles desplegados en calidad de observadores en el frente europeo durante la primera guerra mundial, destacando como ejemplo de ellos a los capitanes médicos Mariano Gómez Ulla, Fidel Pagés Miravé y Antonio Vallejo Nágera. Así mismo, se analiza la asistencia sanitaria prestada a refugiados alemanes en la por entonces colonia española de Guinea durante ese mismo periodo.

  19. Semi-Analytical/Semi-Numerical Analysis and Computation of OLED Dark Spot Diffusion Model in Matlab%半解析/半数值OLED器件黑点扩散模型的Matlab分析计算

    Institute of Scientific and Technical Information of China (English)

    王忆锋; 唐利斌; 岳清

    2011-01-01

    A semi-analytical/semi-numerical method was presented for solving dark spot diffusion model of organic light emitting diode (OLED). The workload of model analysis and computation was greatly reduced by utilizing a number of functions in Matlab, such as symbolic solution of ordinary differential equations, matrix determinant, numerical integration and etc. Formulas for calculating impurity concentration were presented, where the related integration equation was solved with polynomial fitting function based on the principle of numerical approximation. This technique is simple in programming, convenient in operation, and practical in universality.%介绍了求解OLED器件黑点扩散模型的一种半解析/半数值计算方法.该方法综合利用Matlab提供的求解常微分方程、矩阵行列式、数值积分等函数,可使模型分析计算的工作量大为减少.给出了杂质浓度的计算公式,对于其中涉及的积分方程,基于数值逼近原理,采用多项式拟合函数近似求解.该方法具有编程简单、使用方便、实用性强等特点.

  20. La enseñanza del análisis matemático en en los libros de texto españoles de enseñanza secundaria del siglo XX

    Directory of Open Access Journals (Sweden)

    María Teresa GONZÁLEZ AsTUDiLLO

    2010-03-01

    Full Text Available RESUMEN: En este artículo se expone un estudio sobre la evolución de los conceptos de Análisis Matemático en los libros de texto españoles, desde que fue implantada su enseñanza en el plan de 1934 hasta nuestros días. Para ello se ha dividido este lapso de tiempo en cuatro periodos, que se corresponden a grandes rasgos con los diferentes planes de estudio. Dentro de cada periodo, se han estudiado los programas oficiales correspondientes, se han comparado diversos libros de texto y se han estudiado las sucesivas ediciones de los libros, lo que ha proporcionado los datos esenciales para establecer cuál ha sido la evolución de estos conceptos y ha permitido determinar el perfil que caracteriza a cada uno de los libros considerados. ABSTRACT: Along this article is studied the evolution of some concepts of Mathematical Analysis in Spanish texbooks from the beginning of the teaching of this branch of the mathematics until now. This time has been divided in four periods that are related with different educational programs. In each period it has been studied the different programs, it has been compared diverse texbooks and it has been analysed the successive editions of the books. So we have the essential information to concrete the evolution of this concepts in the learning and to determine a profile to characterize each of the books.