WorldWideScience

Sample records for att system studies

  1. D101 is critical for the function of AttJ, a repressor of quorum quenching system in Agrobacterium tumefaciens.

    Science.gov (United States)

    Wang, Chao; Yan, Chunlan; Gao, Yong-Gui; Zhang, Lian-Hui

    2015-09-01

    The quorum quenching system of Agrobacterium tumefaciens is specifically activated upon entering the stationary phase. Evidence has shown that this system includes two key components: the IclR-type transcriptional factor AttJ (also named as BlcR) and the AHL-lactonase AttM (also named as BlcC). At exponential phase, AttJ binds to the promoter region of attM and thus suppresses the expression of attM. At stationary phase, however, the small molecule SSA directly binds to AttJ and relieves its inhibition of AttJ and thereby triggers the expression of attM. While the regulation of AttM has been extensively investigated, little is known about the regulation of AttJ. In this study, we demonstrated the D101 amino acid of AttJ is essential for the AttJ function. In vitro, the variant protein of AttJD101H appeared to be readily aggregated. In vivo, the D101H mutation in AttJ entirely abolished the inhibitory activity of AttJ and overexpressed attM in A. tumefaciens A6. In addition, D101H mutation led to an overexpression of attJ, indicating an auto-regulatory mechanism for the attJ regulation. Put together, these findings demonstrate that D101 is an important amino acid for the transcription activity of AttJ and the transcription of attJ is regulated by a negative feedback loop. These results expand previous biochemical characterization of AttJ and provide new mechanistic insights into the regulation of quorum quenching in A. tumefaciens.

  2. Design av infotainment-system styrt av ögonrörelser i bilar : En explorativ studie för att ta fram ett förslag på hur man kan designa ett infotainment-system som har ögonrörelser som huvudsakliga interaktionsmetod med fokus på den funktionella designen.

    OpenAIRE

    Anzén, Philip

    2014-01-01

    Denna studie har som syfte att ta fram ett designförslag på ett ögonrörelsestyrt infotainment-system samt utvärdera detta. Fokusen ligger på den funktionella design och dess för- och nackdelar. Studien tar upp tre olika designförslag varav ett valdes att göra en prototyp av. Prototypen skapades med hjälp av HTML5, Javascript och Python. Detta kopplades sedan samman med ett ögonrörelsesystem tillhörande Smart Eye AB. Prototypen användartestades och utvärderades med hjälp av en bilsimulator. Ut...

  3. Konsten att uppträda : En studie i Marina Abramović och Ulays performance ur ett performativt och psykoanalytiskt perspektiv

    OpenAIRE

    Zara, Hjelm

    2017-01-01

    Denna studie avser att utforska identitetsskapandet inom den komplexa konstformen performance. Genom att fokusera på Marina Abramovićs och Frank Uwe Laysipens (Ulay) liv och kollaborativa performance ur ett performativt och psykoanalytiskt perspektiv angrips handlingarnas tyngdpunkt i skapandet av jaget under diverse omständigheter och sammanhang. This study aims to investigates the creation of identity within the complex artform performance. By observing the life’s and collaborative perf...

  4. The Unilateral, Self-Deregulation of AT&T

    Science.gov (United States)

    Maloff, Joel H.

    1990-01-01

    The provision of telecommunications products and services in the United States has been dominated by AT&T and the Bell System for more than one hundred years. From the early days of telephones, it was clear that some framework of logic was required to provide "universal" telephone services to the vast majority of American citizens. The concept was known as "natural monopoly", and for the most part, has served us well. We are all aware of statements concerning absolute power corrupting absolutely, and AT&T has not been immune to this law of human nature. Several times during the past century, action has been required by the Federal Government to regulate and constrain AT&T and the Bell System from anti-competitive and predatory actions. These have been called consent decrees, Computer Inquiry II, Computer Inquiry III, and the Modified Final Judgment. The regulations and constraints imposed upon AT&T, with good reason, are now becoming eroded. The perception of a more highly competitive marketplace capable of accommodating an unrestrained AT&T, the impact of uncoordinated national and regional government policies, and unilateral actions by AT&T themselves are bringing us to the edge of an abyss. There are substantial reasons to believe that AT&T will use its considerable might to eliminate its competitors, once free to do so. Must we be doomed to repeat history with still another antitrust case against AT&T some years from now? Logic demands that we learn from the past, and that telecommunications policies be based upon that knowledge.

  5. Att tänka socialpsykologiskt

    DEFF Research Database (Denmark)

    Bo, Inger Glavind

    Att tänka socialpsykoloskt är en introduktion till socialpsykologi. Syftet är att ge en introduktion till vad det innebär att tänka sociologisk om olika problemställningar. Boken tar upp olika tanketraditioner som vardagslivsteori, fenomenologi och symbolsk interaktionism, men hämtar också inspir...

  6. Field measurements to demonstrate new technology for heat pump systems; Faeltmaetningar foer att demonstrera ny teknik foer vaermepumpsystem

    Energy Technology Data Exchange (ETDEWEB)

    Tiljander, Pia; Haglund Stignor, Caroline; Lidbom, Peter; Viktorsson, Magnus; Lindahl, Markus; Axell, Monica

    2010-09-15

    Within the frames of this project there are ongoing measurements of five different heat pump facilities used for heating houses and tap water in one-family houses. The measurements started in the first part of 2010 and are supposed to go on for one year. The final result together with analysis and discussions will be presented in a report that will be published in summer 2011. The purpose of the measurements is to present the potential for heat pump technology in order to raise the acceptance of the technology and through raised acceptance increase the implementation of the technology in new markets. The project also has its purpose in usage of the results and conclusions as basic data and guidelines for constructors and assembling fitters. The project is not intended to grade individual heat pumps from various suppliers in regard to efficiency. A field study does not adapt well for comparison between different heat pumps since there are too many variables (outdoor climate, usage pattern, construction of the building, installation solution, kind of heat pump system) that affect the performance of the heating system. Results from field studies should therefore never be used for comparison. This kind of work should be carried out in a laboratory where variables that affect the result can be controlled. The project started with a mapping of the Swedish heat pump market in order to obtain a base when choosing the different heat pump facilities that should be included in the field study. The selection was made together with the heat pump manufacturers with focus on selecting the best possible technology and to include different technologies. Another important criterion for the selection was to find households that agreed to participate in the study. Included in the study are two buildings with geothermal heating, one with geothermal heating combined with solar panels, one brine/water heat pump connected to a ground storage combined with solar panels and one building

  7. Vad kostar det att marknadsföra sig gratis?

    OpenAIRE

    Säl, Tommy; Persson, Kristian

    2012-01-01

    Med vår studie vill vi belysa de potentiella nackdelarna som finns med att marknadsföra sig som företag via Facebook. I och med webb 2.0 och den sociala revolutionen, där alla kan dela med sig av vad de vill när de vill, så ökar mängden data så pass mycket att markandsförare måste lära sig hantera detta. All data, statusuppdateringar, flera typer av media samt länkningar har fått termen “de sociala bruset” tilldelat sig. Detta brus måste företagen lära sig att utnyttja eller bryta igenom. Via...

  8. Lärares pedagogiska handlingar : En studie av lärares uppfattningarav att vara pedagogisk i klassrumsarbetet

    OpenAIRE

    Eriksson, Inger

    1999-01-01

    This study concerns teachers' conceptions of what it means to be pedagogical. The work has itsstarting point in van Manen's work concerning pedagogical tact. By using this concept vanManen tries to describe teachers' tacit and intuitive skills to decide what to do or what not to do in any given situation. This study is based largely on the assumption that van Marten's concept is too narrow and perhaps invalid in certain contexts. The study was conducted as a phenomenographical study with the ...

  9. Webb Couture : En studie om hur modedesign kan inspirera och förändra webbdesignprocessen för att utmana User Experience standarder

    OpenAIRE

    Carlfjord, Adam; Gustavsson, Henrik

    2015-01-01

    Webbdesign är ett hantverk med potential till oändlig variation och oräkneliga möjligheter, men det är även en process styrd av standarder och förhållningssätt för att optimera resultatet för slutanvändaren. Begrepp så som user experience och framför allt user experience design har i och med utvecklingen blivit allt viktigare aktörer inom webbdesign. Samtidigt som de underlättar i utvecklingsprocessen genom att diktera hur design bör utformas, skapar de inte också då begränsningar av potentia...

  10. Att upptäcka ätstörning hos skolelever utifrån skolsköterskors erfarenheter : En kvalitativ studie

    OpenAIRE

    Gregefalk, Eva; Lagbo, Åsa

    2017-01-01

    Sammanfattning Bakgrund: Forskning visar att ätstörningar hos skolelever blir alltmer vanligt både nationellt och internationellt. Det förekommer mest hos flickor men ökar även hos pojkar. Uppskattningsvis har 10 % ätstörningssymtom. Ca 4-5% av alla flickor har någon gång insjuknat i en allvarlig ätstörning i Sverige. Det är av vikt att upptäcka dessa skolelever då konsekvenserna kan medföra allvarliga hälsoproblem med långdraget, ibland kroniskt förlopp och i värsta fall död. Syfte: Beskriva...

  11. "Aspergers syndrom är jag" En kvalitativ studie om hur det kan vara att leva med Aspergers syndrom

    OpenAIRE

    Abrahamsson, Charlotte; Behlic, Dzenana

    2005-01-01

    Asperger´s syndrome is a state with certain difficulties in social relations, communication and perception. People with Asperger´s syndrome often have a special interest for a certain topic. The main purpose of this study was to describe how grown people with Asperger´s syndrome make sense of living with Asperger´s syndrome. The inquiry was based on semi-structured interviews with eight persons with Asperger´s syndrome. We reached those subjects trough interest organisations for people with A...

  12. Maxflödesalgoritmer i Java : En studie av vikten att välja rätt algoritm och datastruktur för att minimera körtiden för exakta maxflödesalgoritmer

    OpenAIRE

    Borgström, Erik; Grape, Felix

    2015-01-01

    Maxflödesproblemet har många praktiska tillämpningar och probleminstanserna kan bli mycket stora. Effektiva implementationer är därför nödvändigt för att körtiden inte ska bli alltför hög. I den här studien har två maxflödesalgoritmer, Edmonds-Karps algoritm och Goldberg-Tarjans push-relabel-algoritm, implementerats i Java med två olika da- tastrukturer och jämförts med varandra. Det framkommer att det är fördelaktigt att implementera en mer komplex, objektbaserad, grafre-...

  13. Att vara ung vuxen med reumatism : Psykologiska aspekter av reumatisk sjukdom

    OpenAIRE

    Fröberg, Tove

    2015-01-01

    Kunskapen gällande hur det upplevs att vara ung vuxen och samtidigt ha en reumatisk sjukdom är begränsad. Syftet med denna kvalitativa studie var att utifrån individens eget perspektiv försöka fånga in och beskriva olika psykologiska aspekter av att vara ung vuxen och samtidigt ha reumatism, i en svensk kontext. Studien utfördes på sju reumatiker i åldern 18-40 och datainsamligen bestod av semistrukturerade intervjuer. Analysen följde ett induktivt tematiskt mönster. I studien identifierades ...

  14. Root Colonization by Agrobacterium tumefaciens Is Reduced in cel, attB, attD, and attR Mutants

    Science.gov (United States)

    Matthysse, Ann G.; McMahan, Susan

    1998-01-01

    Root colonization by Agrobacterium tumefaciens was measured by using tomato and Arabidopsis thaliana roots dipped in a bacterial suspension and planted in soil. Wild-type bacteria showed extensive growth on tomato roots; the number of bacteria increased from 103 bacteria/cm of root length at the time of inoculation to more than 107 bacteria/cm after 10 days. The numbers of cellulose-minus and nonattaching attB, attD, and attR mutant bacteria were less than 1/10,000th the number of wild-type bacteria recovered from tomato roots. On roots of A. thaliana ecotype Landsberg erecta, the numbers of wild-type bacteria increased from about 30 to 8,000 bacteria/cm of root length after 8 days. The numbers of cellulose-minus and nonattaching mutant bacteria were 1/100th to 1/10th the number of wild-type bacteria recovered after 8 days. The attachment of A. tumefaciens to cut A. thaliana roots incubated in 0.4% sucrose and observed with a light microscope was also reduced with cel and att mutants. These results suggest that cellulose synthesis and attachment genes play a role in the ability of the bacteria to colonize roots, as well as in bacterial pathogenesis. PMID:9647796

  15. Methodology - evaluation of strategies -and the system for taking care of spent nuclear fuel; Metodval - utvaerdering av strategier och system foer att ta hand om anvaent kaernbraensle

    Energy Technology Data Exchange (ETDEWEB)

    2010-10-15

    This report deals with the question of how the Swedish spent nuclear fuel is to be disposed of. What are the requirements? What are the alternatives? In the main chapter of the report, an evaluation is made of the KBS-3 method compared with other strategies and systems for final disposal of spent nuclear fuel. An appendix to the report presents in general terms how the KBS-3 method has developed from the end of the 1970s up to today. The report is one of a number of supporting documents for SKB's applications for construction and operation of the final repository for spent nuclear fuel. In parallel with and as a basis for the present report, SKB has prepared the reports 'Principer, strategier och system foer slutligt omhaendertagande av anvaent kaernbraensle' ('Principles, strategies and systems for final disposal of spent nuclear fuel') /Grundfelt 2010a/, 'Jaemfoerelse mellan KBS-3-metoden och deponering i djupa borrhaal foer slutlig foervaring av anvaent kaernbraensle' ('Comparison between the KBS-3 method and deposition in deep boreholes for final disposal of spent nuclear fuel') /Grundfelt 2010b/ and 'Utvecklingen av KBS-3-metoden. Genomgaang av forskningsprogram, saekerhetsanalyser, myndighetsgranskningar samt SKB:s internationella forskningssamarbete' ('Development of the KBS-3 method. Review of research programmes, safety assessments, regulatory reviews and SKB's international research cooperation') /SKB 2010a/. The reports are in Swedish, but contain summaries in English. The first report is an update of the comprehensive account of alternative methods presented by SKB in 2000. The second report presents a comparison between the KBS-3 method and the Deep Boreholes concept, plus a status report on research and development in the area of Deep Boreholes. The last report describes how the KBS-3 method has been developed from the end of the 1970s up to today. It further describes how the

  16. attG and attC mutations of Agrobacterium tumefaciens are dominant negative mutations that block attachment and virulence.

    Science.gov (United States)

    Matthysse, Ann G; Jaeckel, Peter; Jeter, Cecelia

    2008-04-01

    The cryptic plasmid (pAT) of Agrobacterium tumefaciens was not required for virulence or attachment to plant surfaces. However, mutations in the attC and attG genes located on pAT caused the bacteria to become avirulent and non-attaching on tomato, carrot, and Bryophyllum daigremontiana. This was the case whether the mutation was in the copy of the genes located on pAT or whether it was carried in a second copy of the attA-G operon located on a plasmid in cells that contained a wild-type copy of pAT. Thus attC and attG mutations are dominant negative mutations. The mechanism by which these mutations block attachment and virulence is unknown.

  17. Tid till att bli svensk: En studie av mottagandet av nyanlända barn och familjer i den svenska förskolan

    Directory of Open Access Journals (Sweden)

    Johannes Lunneblad

    2013-05-01

    Full Text Available This paper is from a study about the integration of young refugee children and their families in Sweden. The preschool has here a special responsibility in this mission for children in the age 1-5. The setting for the study is a multiethnic area located on the outskirts of the city. Methodologically an extended case is used. The study has so far been conducted during a period of 14 months doing fieldwork 1-2 days a week. The analyse focus on how the educators educate practice and talk about how the immigrant parents raise and foster their children. This is described as part of a wider ambition to integrate immigrants in Swedish society.

  18. Mundo mortus ses, sed Deo vivas? : en osteologisk studie med avsikt att bedöma klostret i Ny Varbergs karaktär

    OpenAIRE

    Andersson, Johanna

    2011-01-01

    The main aim of this study is to determine whether the monastery in Ny Varberg has been used as a hospital during its active years. The second aim has been to investigate weather the buried individuals at the monastery at Ny Varberg exclusively are deceased monks. Only individuals from the monastery's active years has been included in this study. A total of 16 inhumated individuals was analysed. Both men, women and children was shown to be present, as well as wide spread of children and adult...

  19. Hur hotellgäster väljer att ta ton & vad vill de egentligen ha? : En kvantitativ studie om gästers uppfattning av service recovery inom hotellbranschen.

    OpenAIRE

    Nilsson, Caroline; Sundholm, Matilda

    2015-01-01

    Hotellbranschen är en bransch som ständigt expanderar. Även om beläggningsgraden på hotellen inte ökar avsevärt växer antalet övernattningar på hotell vilket tyder på en ökad konkurrensbild på marknaden. Samtidigt fokuserar tjänsteföretagen alltmer på företagets personalresurser och att kunna erbjuda något utöver kärntjänsten för att differentiera företagets position på marknaden. På ett hotell där hotellrummen är den huvudsakliga tjänsten läggs ett allt större f...

  20. Upplevelser av reklam på Instagram : En studie om hur inlägg kan formas för att skapa olika typer av reklamupplevelser.

    OpenAIRE

    Lindblad, Otilia

    2017-01-01

    In this study the focus is to explain user attitudes towards advertising on the social media Instagram. Instagram is a relatively new media that has opened up a new way to spread advertising. All people are unique and because of that every one interact and thing in different ways. Different types of posts circulate at Instagram where many can connect to advertising. But what does the recipient thinks about the ads? The document present a qualitative data based on notes and semistructured inte...

  1. Kommunicera - Att förmedla en möjlighet : En studie av den interna kommunikationen på ABB Sverige i Västerås

    OpenAIRE

    Lindberg, Petra; Eriksson, Ida

    2011-01-01

    Title: Communicate – to provide an opportunity Authors: Ida Eriksson & Petra Lindberg Tutor: Johan Grinbergs, Mälardalen University Examiner: Cecilia Lindh Subject: Bachelor's essay, Business Administration Keywords: communication, internal communication, channels, communication models, communication theory, information, organization Purpose The idea of this study was to describe how ABB Sweden’s internal communication and information appeared in Västerås. The aim is also to see what too...

  2. Brand Awareness, Ad Attıtudes and Ad Features Toward Engagement on Youtube: an Empırıcal Study of Green Automobıles

    Directory of Open Access Journals (Sweden)

    Ayu Febriyanti Puspitasari

    2015-09-01

    Full Text Available The purpose of this paper is to develop suitable measurements for brand awareness, ad attitudes, ad features, and customer engagement on YouTube, also to investigate the relationships among brand awareness, ad attitudes, ad features toward engagements on YouTube and conduct an empirical study of green automobile videos on YouTube channel. YouTube as social media video sharing platform are used as a platform to investigate customer engagements. The study utilizes statistics data from YouTube channel. There are 7 green car model of video advertisements chosen as the sample of this study. Total number of observations are 633 green car video advertisements on YouTube. Comparison of full model and reduced model also multiple linear regression are conducted to analyze the relationship among brand awareness, ad attitudes, ad features toward engagements. The result shows thatbrand awareness and ad attitudes play very important role to engage customer on YouTube. Hence ad features doesn’t significantly play important role to engage customer on YouTube. The result of this research also shows that green or non-green messages which delivered by each video advertisement is not influence significantly. Indicate that it is important for company to consider use YouTube as one of video sharing platform to engage their customer through online video advertisements.This research model also can be used for another social media in example facebook, twitter, etc with different measurement. This research framework also can be used to analyze the effectiveness of company’s engagement process on YouTube. Online advertisers therefore should work with companies that operate social media websites especially use YouTube to increase the persuasive effects of interactivity, make advertised products more tangible for potential consumers, identify the most important attributes, and use these attributes in advertising. There is no previous research addresses about this kind

  3. A Study of Learners PerceptIon and AttItude towards BA/BSS Program of SSHL of Bangladesh Open UnIversity

    Directory of Open Access Journals (Sweden)

    Sabiha SULTANA

    2011-07-01

    Full Text Available In the present day open and distance education has become a significant way of the development of higher education. Bangladesh Open University (BOU, the only public institution in Bangladesh offers several formal and non-formal programs from secondary to post graduate level through distance mode. The main objectives of BOU’s program is to provide flexible and need based education particularly to the rural and disadvantaged groups like woman, agricultural workers, unemployed youths, uneducated adults, on-the-job people etc. The School of Social Science, Humanities and Language (SSHL at the BOU offers Bachelor of Arts/Bachelor of Social Science (BA/BSS to create efficient and skilled manpower in the country. The focuses of this paper is to find out learners’ views and attitude towards BA/BSS program at BOU. In this study, 187 respondents were randomly selected from 15 tutorial centers of 2 Regional Resource centers (RRCs of BOU. The study showed that 62% learners were male and the mean age of the learners was 34.05 years (minimum 22; maximum 54. More than 50% learners were married and nearly half (47.6% of them were private employees and 86.6% were Muslims. Amongst them, 72.2% were come from urban areas and residing around 23.08 km from the tutorial centers. Most (72% of the learners of BA/BSS program stated that the program was as usual but 24.1% expressed that it was difficult to understand but 97.7% learners responded that text materials were up to the mark. Regarding the media programs, 61% of the learners gave their opinion that TV programs were at the level best but they wanted to watch these at the evening or night schedule. It was surprising that 26.2% of the learners had bitter experience with the services of RRCs. Finally, some measures have been proposed to offer effective and more popular educational program through BOU.

  4. The Arms Trade Treaty (ATT): a public health imperative.

    Science.gov (United States)

    Valenti, Maria; Mtonga, Robert; Gould, Robert; Christ, Michael

    2014-02-01

    The United Nations adopted an historic international Arms Trade Treaty (ATT) in April 2013. A 1997 meeting of Nobel Peace Prize laureates who called for an International Code of Conduct to address the 'destructive effects of the unregulated arms trade' initiated discussions that led to the Treaty. Public health institutions, including the World Health Organization and the International Committee of the Red Cross, and nongovernmental health groups such as International Physicians for the Prevention of Nuclear War, made adoption of the ATT a public health imperative. The poorly regulated $70 billion annual trade in conventional arms fuels conflict, with devastating effects on global health. The ATT aims to 'reduce human suffering'. It prohibits arms' sales if there is knowledge that the arms would be used in the commission of genocide, attacks against civilians, or war crimes. The health community has much to contribute to ensuring ratification and implementation of the ATT.

  5. "Phased Implementation Of AT&T PACS At Duke University Medical Center"

    Science.gov (United States)

    Stockbridge, Chris; Ravin, Carl E.

    1986-06-01

    "Help me communicate more quickly and more effectively with referring clinicians". This request was the driving force behind the installation of the AT&T CommView System at Duke. The CommView System is a type of Digital Image Management System and Picture Archival Communication System whose chief purpose is to deliver interpreted diagnostic images to referring clinicians and attending physicians. The system acquires electronic images from modalities in a diagnostic imaging facility, stores these images in computer managed patient files and distributes these on demand over fiber optic cable to Display Consoles. The CommView System was designed at AT&T Bell Labs; it uses fiber optic ribbon cable between buildings fused to multistrand lightguide building cables to distribute images, typically around a medical center or campus at data transfer rates of 40 Mbps. This paper gives the rationale used in designing a start-up network and placing the initial equipment for a field trial of the AT&T CommView System in the Radiology Department of Duke University Medical Center.

  6. Phased Implementation Of At&T PACS At Duke University Medical Center

    Science.gov (United States)

    Stockbridge, Chris; Ravin, Carl E.

    1986-01-01

    "Help me communicate more quickly and more effectively with referring clinicians". This request was the driving force behind the installation of the AT&T CommViewm System at Duke. The CommView System is a type of Digital Image Management System and Picture Archival Communication System whose chief purpose is to deliver interpreted diagnostic images to referring clinicians and attending physicians. The system acquires electronic images from modal-ities in a diagnostic imaging facility, stores these images in computer managed patient files and distributes these on demand over fiber optic cable to Display Consoles. The CommView System was designed at AT&T Bell Labs; it uses fiber optic ribbon cable between buildings fused to multistrand lightguide building cables to distribute images, typically around a medical center or campus at data transfer rates of 40 Mbps. This paper gives the rationale used in designing a start-up network and placing the initial equipment for a field trial of the AT&T CommView System in the Radiology Department of Duke University Medical Center.

  7. Construction of a stepwise gene integration system by transient expression of actinophage R4 integrase in cyanobacterium Synechocystis sp. PCC 6803.

    Science.gov (United States)

    Miura, Takamasa; Nishizawa, Akito; Nishizawa, Tomoyasu; Asayama, Munehiko; Takahashi, Hideo; Shirai, Makoto

    2014-08-01

    The integrase of actinophage R4, which belongs to the large serine-recombinase family, catalyzes site-specific recombination between two distinct attachment site sequences of the phage (attP) and actinomycete Streptomyces parvulus 2297 chromosome (attB). We previously reported that R4 integrase (Sre) catalyzed site-specific recombination both in vivo and in vitro. In the present study, a Sre-based system was developed for the stepwise site-specific integration of multiple genes into the chromosome of cyanobacterium Synechocystis sp. PCC 6803 (hereafter PCC 6803). A transgene-integrated plasmid with two attP sites and a non-replicative sre-containing plasmid were co-introduced into attB-inserted PCC 6803 cells. The transiently expressed Sre catalyzed highly efficient site-specific integration between one of the two attP sites on the integration plasmid and the attB site on the chromosome of PCC 6803. A second transgene-integrated plasmid with an attB site was integrated into the residual attP site on the chromosome by repeating site-specific recombination. The transformation frequencies (%) of the first and second integrations were approximately 5.1 × 10(-5) and 8.2 × 10(-5), respectively. Furthermore, the expression of two transgenes was detected. This study is the first to apply the multiple gene site-specific integration system based on R4 integrase to cyanobacteria.

  8. Gymnasierektors ledarskapsparadox: att vara verksamhetschef och pedagogisk utvecklare

    Directory of Open Access Journals (Sweden)

    Ingemar Johansson

    2014-11-01

    Full Text Available Forskning om rektors ledarskap är omfattande, men studier som undersöker gymnasierektors arbetssituation och ledarskap är mer sällsynta. Avsikten med den föreliggande studien var att bidra till att denna kunskapslucka fylls igen. Semistrukturerade intervjuer med tio gymnasierektorer genomfördes med fokus på rektors arbetsuppgifter, möjlighet att planera och styra arbetet, förväntningar kring ledarskapet, samt möjlighet att utvecklas och lära i arbetet. I resultaten av den tematiska analysen framträdde fyra teman: (1 ledarskapsideal, (2 kollegialt stöd, (3 ledarskap i en förändringsbenägen organisation, och (4 begränsat utrymme för reflektion. Ett övergripande, gemensamt tema: "Ledarskapsparadox" speglar de högst varierande omständigheter och förhållanden i vardagen som en gymnasierektor ska kunna hantera, vilka också präglar resultatet av analysen. Ett något oväntat resultat var att gymnasierektor upplevde stort, eget ansvar för elevernas bästa. Studien kastar nytt ljus på gymnasierektorers ledarskap, och bidrar till ökad förståelse för vad rollen som ledare för en komplex organisation som gymnasieskolan kan innebära. Genom att knyta an till en arbetspsykologisk ledarskapsteori och formulera en arbetspsykologisk hypotes kan studien bidra till forskningen om arbetsintegrerat lärande (AIL.

  9. Finns det någon där för mig? : En studie om ungdomars upplevelser kring att tryggt kunna berätta för andra om sitt psykiska mående

    OpenAIRE

    Mylläri, Sanne; Hansson, Lina

    2015-01-01

    Forskningsfältet kring ungdomars psykiska hälsa är oenigt. Forskare är oense om den psykiska ohälsan hos ungdomar ökar– och i så fall, varför? En faktor som lyfts fram som förklaring till hur ungdomar mår idag är ungdomars livsvillkor i Sverige. I det samhälle som ungdomar idag ställs inför råder en stark tilltro till individualism, vilket i sin tur leder till ett stort eget ansvarstagande som kan upplevas pressande. Dessa faktorer i sig innebär inte att ungdomar bör uppleva ett sämre psykisk...

  10. Genetic analysis of attTn7, the transposon Tn7 attachment site in Escherichia coli, using a novel M13-based transduction assay.

    Science.gov (United States)

    Qadri, M I; Flores, C C; Davis, A J; Lichtenstein, C P

    1989-05-05

    The large (14 kb; kb = 10(3) bases) bacterial transposon, Tn7 (encoding resistance to trimethoprim and streptomycin/spectinomycin), has unusual properties. Like other elements, Tn7 transposes with low efficiency and low target-site specificity, but Tn7 also transposes, with high frequency in a unique orientation, to a preferred "attachment" site, called attTn7, in the Escherichia coli chromosome and similarly into plasmids containing attTn7. We developed a novel bacteriophage M13-based assay system to measure the transposition frequency of Tn7 to M13mp phage vectors containing attTn7 on a cloned 1 kb fragment of chromosomal DNA. Phage harvested from a Tn7 donor strain were used to infect recipient bacteria with selection for trimethoprim resistance. Transposition frequency, expressed as the number of trimethoprim-resistant colonies per plaque-forming unit, was found to be approximately 10(-4) to M13mp::attTn7, in contrast to 10(-10) to M13mp recombinants with approximately 1 kb insertions of other, "generic brand", DNA. By deletion analysis of M13mp::attTn7, we show that attTn7 is contained within a 64 base-pair region; sequences adjacent to the actual insertion site and encoding the carboxy terminus of the glmS gene are required. This assay also provided evidence for transposition immunity conferred by the right end of Tn7.

  11. Mp3-inspelning som metod för att studera slöjdundervisning

    Directory of Open Access Journals (Sweden)

    Peter Hasselskog

    2011-11-01

    Full Text Available I föreliggande text diskuteras några olika typer av empiriskt material för att studera slöjdverksamhet. Särskilt fokus riktas mot dokumentation genom inspelning av lärares och elevers muntliga kommunikation med Mp3-spelare, samt jämförelser mellan Mp3- och videoinspelning. Utgångspunkt är erfarenheterna från avhandlingsstudien ”Slöjdlärares förhållningssätt i undervisningen” (Hasselskog, 2010. I texten diskuteras relationen mellan teori, empiri och metod. Vad man som forskare avser att studera, och vad som med olika insamlingsmetoder är möjligt att studera. En poäng som görs är att valet av empiri för att studera slöjdverksamhet i stor utsträckning avgör vad som är möjligt respektive vad som inte är möjligt att studera – något som motiverar att valet av insamlingsmetod styrs av syftet, vilket i sin tur påverkas av forskarens teoretiska utgångspunkter. Men, att detta samtidigt innebär att möjligheterna med en specifik insamlingsmetod, i denna text framförallt Mp3-inspelning, därigenom riskerar att inte utnyttjas till sin fulla potential. Att låta en speciell insamlingsmetod vara utgångspunkt, kan vara ett sätt att synliggöra nya perspektiv på slöjdundervisning och möjligheterna att studera denna. Sökord: metod, slöjd, ljudinspelning, slöjdlärare, klassrumsforskningURN:NBN:no-29966

  12. Aphidicolin inhibits cell proliferation via the p53-GADD45β pathway in AtT-20 cells.

    Science.gov (United States)

    Kageyama, Kazunori; Sugiyama, Aya; Murasawa, Shingo; Asari, Yuko; Niioka, Kanako; Oki, Yutaka; Daimon, Makoto

    2015-01-01

    Cushing's disease is primarily caused by pituitary corticotroph adenomas, which autonomically secrete adrenocorticotropic hormone (ACTH). ACTH production may be associated with tumor cell proliferation; however, the effects of cell cycle progression on ACTH production and cell proliferation are little known in corticotroph tumor cells. A DNA polymerase inhibitor, aphidicolin, arrests cells at the entrance to the S phase and blocks the cell cycle; aphidicolin also induces apoptosis in tumor cells. In the present study, we determined ACTH production and cell proliferation of AtT-20 corticotroph tumor cells following treatment with aphidicolin. Aphidicolin decreased proopiomelanocortin mRNA levels in AtT-20 cells and the levels of ACTH in the culture medium of these cells. Aphidicolin also decreased cell proliferation and induced apoptosis in AtT-20 cells. Fluorescence-activated cell sorting analyses revealed that this agent increased the percentage of G0/G1 phase cells, and decreased S phase cells. Aphidicolin decreased the phosphorylation of cyclic adenosine monophosphate response element-binding protein and Akt. Aphidicolin increased the levels of tumor protein 27 (p27) and 53 (p53), while it decreased cyclin E levels. Aphidicolin also increased the mRNA levels of the stress response gene growth arrest and DNA damage-inducible 45β (GADD45β), a putative downstream target of p53. The p53 knockdown increased GADD45β mRNA levels. The GADD45β knockdown inhibited the decreases in cell proliferation. Thus, aphidicolin inhibits cell proliferation via the p53-GADD45β pathway in AtT-20 cells.

  13. Discrimination-pregnancy leave-Pregnancy Discrimination Act not retroactive-bona fide seniority system. AT&T Corp. v. Hulteen, 2009 U.S. LEXIS 3470 (U.S. 5/18/2009).

    Science.gov (United States)

    2009-01-01

    A pension plan whose terms are those of a bona fide seniority system and which treats pregnancy leave, taken before the addition of the Pregnancy Discrimination Act (PDA) to Title VII, differently than other kinds of medical leave, does not amount to sex and pregnancy discrimination under Title VII because PDA does not apply retroactively.

  14. Att sluta eller inte sluta : En litteraturstudie om tobaksavvänjningsmetoder

    OpenAIRE

    Bjellman, Karin

    2007-01-01

    Att sluta eller inte sluta? En litteraturstudie om tobaksavvänjningsmetoder Bjellman, K. Tobaksbruket har en lång historia, och de tobaksrelaterade sjukdomarna kostar samhället miljarder i sjukvårdskostnader och produktionsbortfall varje år. Andelen rökare minskar stadigt i Sverige, idag röker ca 15 procent av befolkningen. Resultaten från olika metoder för tobaksavvänjning är tämligen blygsamma, och ugefär nittio procent av de som slutar röka gör det på egen hand. Syftet med denna studie var...

  15. Maqāmāt Dalam Manthiq Al-Thayr Al-Attār

    Directory of Open Access Journals (Sweden)

    Syamsun Ni`am

    2015-12-01

    Full Text Available Abstract : Attār is one to be accounted amongst the greatest sufi poets of Persia sufis in the history of Sufism who has notable contibution to the esoteric Islam (Sufism. He packed his mystical teachings in the form of poetry and verse, -to be more interactive and expressive- though his teachings are not different with his predecessors, particularly of those who inspired by the principle of mystical union; and Attār is among the Sufis who have managed to reach the highest peak in the mystical journey. According to Attār , there are seven valleys that must be passed by spiritual traveler (sālik in his mystical journey, as mentioned in Manthiq al-Thayr. In this work he use the language of poetry to reveal the process of a servant to God through the stages (maqāmāt, and Attār  gives the parable maqāmāt is like a bird -burung flying looking for the king. Attār call maqāmāt is the term valleys, of which there are seven valleys.Keywords : Maqāmāt, seven valleys, fanā’, divine loveAbstrak : Attar adalah salah satu sufi besar Persia yang pernah dikenal dalam sejarah tasawuf. Attār telah banyak memberikan kontribusi pemikirannya dalam khasanah keilmuan Islam esoteris (tasawuf. Ia mengemas ajaran tasawufnya dalam bentuk puisi dan syair, —sehingga tampak lebih menarik— meskipun ajaran-ajaran yang disampaikan kurang lebih sama dengan para sufi pendahulunya, terutama yang menganut paham mystical union; dan Attār adalah di antara sufi yang telah berhasil mencapai puncak tertinggi dalam perjalanan mistisnya itu. Menurut Attār, ada tujuh lembah yang harus dilalui sālik dalam menempuh perjalanan mistisnya, sebagaimana disebutkan dalam Manthiq al-Thayr. Dalam karyanya ini, Attār menggunakan bahasa puisi dan syair untuk mengungkap proses seorang hamba menuju Tuhan melalui tahapan-tahapan (Maqāmāt, dan Attār memberikan perumpamaan maqāmāt tersebut seperti burung-burung yang terbang mencari rajanya. Attār  menyebut maq

  16. Konsten att upprätthålla löneskillnader mellan kvinnor och män : En rättssociologisk studie av regler i lag och avtal om lika lön

    OpenAIRE

    Svenaeus, Lena

    2017-01-01

    This dissertation, entitled “The Art of Preserving the Gender Pay Gap,” is a study in the sociology of law. It examines the obstructions to the principle of equal pay that persist in the face of international conventions and EU legislation that have mandated changes to legislation and collective bargaining agreements. The dissertation seeks to investigate and explain how the pay gap between women and men is created and recreated on an ideological level. The study covers three periods when – a...

  17. Att skaffa barn i samkönade relationer : -       En studie av ett diskussionsforum för homo- och bisexuella föräldrar/ blivande homo- och bisexuella föräldrar

    OpenAIRE

    Tecle, Mary

    2010-01-01

    I denna c- uppsats har en undersökning gjorts om interaktionen och samspelet mellan medlemmarna på ett forum som är ett av de främsta diskussionsforumen för homo- och bisexuella föräldrar/blivande homo- och bisexuella föräldrar. Syftet med undersökningen var att är få ökad insikt om den sociala interaktionen på forumet med hjälp av dessa tre frågeställningar: Hur ser interaktionen/samspelet ut mellan medlemmarna på forumet? Går det att utläsa särskilda teman utifrån inläggen? På vilket sätt k...

  18. ProSAAS-derived peptides are differentially processed and sorted in mouse brain and AtT-20 cells.

    Directory of Open Access Journals (Sweden)

    Jonathan H Wardman

    Full Text Available ProSAAS is the precursor for some of the most abundant peptides found in mouse brain and other tissues, including peptides named SAAS, PEN, and LEN. Both SAAS and LEN are found in big and little forms due to differential processing. Initial processing of proSAAS is mediated by furin (and/or furin-like enzymes and carboxypeptidase D, while the smaller forms are generated by secretory granule prohormone convertases and carboxypeptidase E. In mouse hypothalamus, PEN and big LEN colocalize with neuropeptide Y. In the present study, little LEN and SAAS were detected in mouse hypothalamus but not in cell bodies of neuropeptide Y-expressing neurons. PEN and big LEN show substantial colocalization in hypothalamus, but big LEN and little LEN do not. An antiserum to SAAS that detects both big and little forms of this peptide did not show substantial colocalization with PEN or big LEN. To further study this, the AtT-20 cells mouse pituitary corticotrophic cell line was transfected with rat proSAAS and the distribution of peptides examined. As found in mouse hypothalamus, only some of the proSAAS-derived peptides colocalized with each other in AtT-20 cells. The two sites within proSAAS that are known to be efficiently cleaved by furin were altered by site-directed mutagenesis to convert the P4 Arg into Lys; this change converts the sequences from furin consensus sites into prohormone convertase consensus sites. Upon expression of the mutated form of proSAAS in AtT-20 cells, there was significantly more colocalization of proSAAS-derived peptides PEN and SAAS. Taken together, these results indicate that proSAAS is initially cleaved in the Golgi or trans-Golgi network by furin and/or furin-like enzymes and the resulting fragments are sorted into distinct vesicles and further processed by additional enzymes into the mature peptides.

  19. Att utnyttja naturen i förskolan - i städer och på landet

    OpenAIRE

    Hedman, Ida

    2016-01-01

    Forskning visar att vi spenderar mindre tid ute i naturen idag än vad vi gjorde för bara 20 år sedan. Förskolans läroplan skriver om att förskolorna ska sträva efter att barnen utvecklar sina kunskaper inom naturvetenskap och eftersom vi människor lär oss genom att göra så bör vi då ge oss ut i naturen för att lära oss om den. Syftet med denna enkätstudie är att ta reda om det finns någon skillnad på hur ofta pedagoger diskuterar med barnen om naturen beroende på om förskolan de arbetar på är...

  20. Lönsamhet av CRM hos företag : En fallstudie på vilka mått företag i Sverige använder för att beräkna sin lönsamhet av CRM

    OpenAIRE

    Al-walai, Sabrin; Snismark- Karlsson, Kimbo

    2015-01-01

    Customer Relationship Management (CRM) har beskrivits som en filosofi, en teknologi, en strategi, en process och ett IT-system. Det finns ingen allmängiltig definition av CRM vilket har lett till svårigheter att identifiera och definiera tillförlitliga mått vid mätning av dess effektivitet. Detta har lett till att företag skämtsamt brukar benämna att CRM står för ”Can‟t Really Measure”. Oavsett har flertalet modeller, mått och system tagits fram för att kunna göra CRM-insatser mätbara. Ett sä...

  1. Systems Studies

    Energy Technology Data Exchange (ETDEWEB)

    Graham, R.L.

    1998-03-17

    The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

  2. Darbstaciju attālināta administrēšana

    OpenAIRE

    Pleiko, Uģis

    2011-01-01

    Kvalifikācijas darbā apskatītas attālinātās darbstaciju administrēšanas iespējas, attālinātas administrēšanas programmatūras uzstādīšana, konfigurēšana, salīdzinājums un lietojamība. Darba mērķis – datortīkla administratora dažādas sarežģītības ikdienas uzdevumu paveikšana attālināti, izmantojot dažādus risinājumus; veikt šos pašus uzdevumus arī attālināti savienojoties starp dažādām operētājsistēmām, piemēram, no Microsoft Windows attālinātās darbvirsmas režīmā pieslēgties Ubuntu Linux un...

  3. Att stärka innovation i mjukvaruföretag

    OpenAIRE

    Jansson, Fredrik

    2010-01-01

    Detta examensarbete har två huvudsakliga mål. Det ena är att utöka funktionaliteten i mjukvaran C3Loops för att underlätta för musiker som producerar elektronisk musik som vill använda mjukvaran i liveframträdanden. Det andra är att titta närmre på hur processmodeller för mjukvaruutveckling stödjer innovation. Denna rapport ger läsaren ett tvärvetenskapligt perspektiv. Tre för ämnet relevanta teoretiska områden, innovation, software-engineering och design tas upp. C3Loops projektet används so...

  4. Att lita på andras blodgåva : Åsikter om att homosexuella män i praktiken nekas donera blod

    OpenAIRE

    Elwin, Elin

    2015-01-01

    Denna kandidatuppsats undersöker vilka upp­fattningar sjuksköterskor och homo­sexuella män har kring reglerna för blodgivning, med inriktning på att homosexuella män i praktiken inte får donera blod. Studien har genomförts med kvalitativ intervju som metod. Resultatet framhäver att mina informanter klassificerat blod och människor olika, där både utländskt blod och svenskt blod rangordnas efter potentiell risk för smitta. Sjuksköterskorna och de homosexuella männen hanterar även reglerna olik...

  5. "Att leva ett meningsfullt liv med skuggan" : en kvantitativ, longitudinell och jämförande undersökelse av självbemästringsprogrammet "Att leva ett friskare liv"

    OpenAIRE

    Engell, Lena Cristina

    2005-01-01

    Fler och fler får kroniska sjukdomar, också yngre människor. Om man tar i betraktning den belastning som kronisk sjukdom kan ge, ser man att det är behov för en välfungerande utbildning för denna växande grupp av människor. Det amerikanska självhjälpsprogrammet Att leva ett friskare liv placerar personer med olika kroniska tillstånd och kombinationer av tilläggsjukdomar i samma program. Programmet söker att ge kursdeltagarna bistånd till att bli självhjälpta i sin strävan att bemästra sitt ...

  6. A direct inhibitory action of prostaglandins upon ACTH secretion at the late stages of the secretory pathway of AtT-20 cells

    Science.gov (United States)

    Wilson, Mary L; Guild, Simon B

    2002-01-01

    The mouse AtT-20/D16-16 anterior pituitary tumour cell line was used as a model system for the study of the effects of prostaglandins upon the late stages of the adrenocorticotrophin (ACTH) secretory pathway. Calcium (1 nM – 100 μM), guanosine-5′-O-(3-thiotriphosphate) (GTP-γ-S) (1 – 100 μM) and mastoparan (1 and 10 μM) all stimulated ACTH secretion from permeabilized AtT-20 cells in a concentration-dependent manner. GTP-γ-S and mastoparan stimulated ACTH secretion from permeabilized cells in the absence of calcium. Co-incubation with prostaglandins E1 and E2 (PGE1, PGE2) (10 μM) but not prostaglandin F2α (PGF2α) (10 μM) significantly inhibited calcium-, GTP-γ-S and mastoparan-evoked secretion by 30 – 50%. The effects of PGE1 and PGE2 upon GTP-γ-S (100 μM)-, calcium (10 μM)- and mastoparan (10 μM)-evoked secretion were concentration-dependent. PGE1 significantly inhibited GTP-γ-S- and calcium-evoked secretion at concentrations of PGE1 above 1 μM but mastoparan-evoked secretion only at the highest concentration of PGE1 investigated (10 μM). PGE2 was much more potent than PGE1 and significantly inhibited GTP-γ-S- and calcium-evoked secretion at 10 nM and above and mastoparan-evoked secretion above 1 μM. The inhibitory effects of PGE1 and PGE2 upon calcium-, GTP-γ-S- and mastoparan-stimulated ACTH secretion from permeabilized cells were pertussis toxin (PTX) sensitive. In intact cells PGE1, PGE2 and PGF2α (1 nM – 10 μM) acting singly had little or no effect upon ACTH secretion. However, only PGE2 (1 nM – 10 μM) significantly inhibited corticotrophin-releasing factor-41 (CRF-41) (100 nM)-evoked secretion in a concentration dependent manner. The present study finds that prostaglandins of the E series exert an inhibitory action, via a pertussis toxin-sensitive GTP-binding (G)-protein, in the late stages of the ACTH secretory pathway distal to the G-exocytosis (Ge)/calcium point of

  7. Analytical Tools Interface for Landscape Assessments (ATtILA) for landscape metrics

    Science.gov (United States)

    ATtILA is easy to use ArcView extension that calculates many commonly used landscape metrics. By providing an intuitive interface, the extension provides the ability to generate landscape metrics to a wide audience regardless of their GIS knowledge level.

  8. Measuring Attitudes about Intimate Partner Violence against Women: The ATT-IPV Scale

    NARCIS (Netherlands)

    Yount, K.M.; VanderEnde, K.; Zureick-Brown, S.; Hoang, T.A.; Tran, H.M.; Schuler, S.R.

    2014-01-01

    In lower-income settings, women more often than men justify intimate partner violence (IPV). Yet, the role of measurement invariance across gender is unstudied. We developed the ATT-IPV scale to measure attitudes about physical violence against wives in 1,055 married men and women ages 18-50 in My

  9. Tūrisma attīstība Latvijā

    OpenAIRE

    Mickeviča, Kristīne

    2010-01-01

    Ekonomiskās situācijas pasliktināšanās visā pasaulē ir atstājusi zināmu ietekmi uz tūrisma nozares pieprasījumu– cilvēki spiesti ceļot ekonomiskāk, kas veicina iekšzemes tūrisma attīstību. Darba mērķis ir veikt Latvijas un vispasaules tūrisma attīstības analīzi un izvērtēt iekšzemes ceļojumu attīstības perspektīvu. Darbs sastāv no 3 nodaļām, kur pirmajā autore ir veikusi tūrisma nozares teorētisko skaidrojumu un statistisko datu analīzi par tūrisma attīstību pasaulē. Otrajā nodaļā autor...

  10. Den komplexa väven Att organisera för barns övergångar till och från förskoleklass

    Directory of Open Access Journals (Sweden)

    Helena Ackesjö

    2015-09-01

    Full Text Available This study focuses on how children's transitions to and from preschool classes are organized in different schools. Principal’s arguments for this organization were sought via a web-based survey and analyzed using the frame factor theory in addition to theories of practical sense and the concept of continuity. The results show that children tend to make more transitions between social communities the younger they are. The distribution of the principal’s answers show that the majority of them, because of external conditions, split the preschool groups to new classes in the transition to preschool class. However, the same movements are not indicated in the transition to first grade. The results show how the work of organizing chidren’s transitions represent a complex web of external actual conditions as the number of children and the recruitment area of the school, the internal logics and ideas about what is best for children and best for continued learning as well as the school's own traditions of working with transitions. Föreliggande studie fokuserar på hur barns övergångar till och från förskoleklass organiseras på olika skolor. Via en webbaserad enkät söks skolledares argument för denna organisering. I analysen nyttjas ett ramfaktorteoretiskt tänkande som kompletteras med teorier om praktiskt förnuft samt kontinuitetsbegreppet. Resultaten visar att barn tenderar att göra fler övergångar mellan barngrupper och sociala gemenskaper ju yngre de är. Fördelningen av skolledarnas svar visar att majoriteten, på grund av yttre villkor, delar förskolegrupperna till nya klasser i övergången till förskoleklass. Däremot indikeras inte samma rörlighet i övergången till årskurs 1. Resultaten visar hur arbetet med att organisera övergångarna utgör en komplex väv av yttre faktiska villkor som barnantal och upptagningsområdets storlek, av inre logiker och föreställningar om vad som är det bästa för barnen och det b

  11. Att vara förälder till barn med funktionsnedsättning : erfarenheter av stöd och av att vara professionell stödjare.

    OpenAIRE

    Lindblad, Britt-Marie

    2005-01-01

    Avhandlingens övergripande syfte är att tolka och beskriva innebörder av stöd, utifrån att vara förälder till barn med funktionsnedsättning och att vara professionella stödjare. Datainsamling har skett i form av berättande intervjuer med 39 föräldrar (23 mödrar och 16 fäder) och 9 professionella (7 kvinnor, 2 män) från olika verksamheter. Samtliga intervjuer har analyserats med hjälp av fenomenologisk hermeneutisk metod. Innebörder av att vara förälder till barn med funktionsnedsättning (stud...

  12. Att arbeta tillsammans - utvärdering av nytt kursupplägg av examensarbeten

    Directory of Open Access Journals (Sweden)

    Sofia Thorsson

    2015-06-01

    Full Text Available Grupphandledning av examensarbete inom geografi, med fokus på naturgeografi, vid Göteborgs Universitet infördes 2012 som ett komplement till den individuella handledningen i syfte att öka genomströmningen av studenter samt kvaliteten på arbetena. I denna artikel presenteras och utvärderas det aktuella kursupplägget. Såväl genomströmningen som kvaliteten (bearbetning och tolkning av materialet, teorianknytning, disposition och språk ökade efter införandet av grupphandledning, vilket i linje med tidigare studier visar att grupphandledning är ett bra komplement till den traditionella individuella handledningen.

  13. 77 FR 57504 - Special Access for Price Cap Local Exchange Carriers; AT&T Corporation Petition for Rulemaking To...

    Science.gov (United States)

    2012-09-18

    ... regulation in areas where it is apparent that competition is thriving. The United States Small Business... 11 18 Manchester, NH Frontier........ Verizon........ 2 13 15 Oxnard-Simi Valley-Ventura, AT&T Pac...

  14. Marine integrons containing novel integrase genes, attachment sites, attI, and associated gene cassettes in polluted sediments from Suez and Tokyo Bays.

    Science.gov (United States)

    Elsaied, Hosam; Stokes, Hatch W; Kitamura, Keiko; Kurusu, Yasurou; Kamagata, Yoichi; Maruyama, Akihiko

    2011-07-01

    In order to understand the structure and biological significance of integrons and associated gene cassettes in marine polluted sediments, metagenomic DNAs were extracted from sites at Suez and Tokyo Bays. PCR amplicons containing new integrase genes, intI, linked with novel gene cassettes, were recovered and had sizes from 1.8 to 2.5 kb. This approach uncovered, for the first time, the structure and diversity of both marine integron attachment site, attI, and the first gene cassette, the most efficiently expressed integron-associated gene cassette. The recovered 13 and 20 intI phylotypes, from Suez and Tokyo Bay samples, respectively, showed a highly divergence, suggesting a difference in integron composition between the sampling sites. Some intI phylotypes showed similarity with that from Geobacter metallireducens, belonging to Deltaproteobacteria, the dominant class in both sampling sites, as determined by 16S rRNA gene analysis. Thirty distinct families of putative attI site, as determined by the presence of an attI-like simple site, were recovered. A total of 146 and 68 gene cassettes represented Suez and Tokyo Bay unsaturated cassette pools, respectively. Gene cassettes, including a first cassette, from both sampling sites encoded two novel families of glyoxalase/bleomycin antibiotic-resistance protein. Gene cassettes from Suez Bay encoded proteins similar to haloacid dehalogenases, protein disulfide isomerases and death-on-curing and plasmid maintenance system killer proteins. First gene cassettes from Tokyo Bay encoded a xenobiotic-degrading protein, cardiolipin synthetase, esterase and WD40-like β propeller protein. Many of the first gene cassettes encoded proteins with no ascribable function but some of them were duplicated and possessed signal functional sites, suggesting efficient adaptive functions to their bacterial sources. Thus, each sampling site had a specific profile of integrons and cassette types consistent with the hypothesis that the

  15. Reliable computer systems design and evaluatuion

    CERN Document Server

    Siewiorek, Daniel

    2014-01-01

    Enhance your hardware/software reliabilityEnhancement of system reliability has been a major concern of computer users and designers ¦ and this major revision of the 1982 classic meets users' continuing need for practical information on this pressing topic. Included are case studies of reliablesystems from manufacturers such as Tandem, Stratus, IBM, and Digital, as well as coverage of special systems such as the Galileo Orbiter fault protection system and AT&T telephone switching processors.

  16. Foxp3 (-/ATT polymorphism contributes to the susceptibility of preeclampsia.

    Directory of Open Access Journals (Sweden)

    Ximing Chen

    Full Text Available OBJECTIVE: To evaluate the potential influence of Foxp3 polymorphism on preeclampsia (PE susceptibility, we conducted a case-control study in Han Chinese women. METHODS: Foxp3 genotyping was determined by polymerase chain reaction with sequence-specific primers (PCR-SSP in 156 PE patients and 252 age-frequency matched controls. Immunohistochemical staining was used to detect the expression of Foxp3 specific transcription factor in 30 PE and 30 normal pregnant women. RESULTS: The positive rate of Foxp3 expression in PE (26.67% was significant difference from that in normal control (63.33%, P<0.05. The frequency of Foxp3-6054 TT genotype was significantly lower in PE patient than that in control. No significant difference was found in Foxp3-3279 genotypes between PE and control, as well as for the variant allele. The frequency of Foxp3-6054A/-3279C haplotype in PE was significantly higher than that in control (P<0.01, while the frequency of Foxp3 6054T/-3279C haplotype was significantly lower in PE patient than that in control (P<0.01. CONCLUSION: Our findings suggest that the immune suppression function in PE patients is weakened, which may result in the occurrence of PE. Foxp3 polymorphism (rs5902434 may be a potential contributor for the development of PE in Han Chinese women.

  17. She’s the Boss – HR och kvinnligt chefskap : Hur Human Resources kan arbeta för att främja kvinnorschefskarriärer

    OpenAIRE

    Linderfyhr, Jessica; Malm, Mikaela

    2017-01-01

    Enligt undersökningar som chefsorganisationen Ledarna publicerar årligen finns det en återkommande problematik med att rekrytera unga kvinnor till chefspositioner. Syftet med examensarbetet är att undersöka vad som kan inverka på kvinnors vilja att söka en chefstjänst och att utforma en HR strategi som främjar och motiverar kvinnor att söka chefstjänster. Unga kvinnor kan känna tvekan inför chefskap på grund av känslan av bristande erfarenhet och svårighet med att identifiera sig med den ster...

  18. Terror management after a recent suicide att empt

    Directory of Open Access Journals (Sweden)

    Sergey N. Enikolopov

    2012-01-01

    Full Text Available Suicide is a controversial phenomenon that people of different cultures and evenof different epochs have had difficulty naming. It used to be an enduring themeof many medical, psychological, philosophical, and moralistic discussions. It is aparadoxical act of ultimate self-destruction, a flight from life to death. To commitsuicide is to overcome the fear of personal death and to make a step into nothingness.Such a desperately brave deed requires an abandonment of one’s sense ofimmortality, which we all have, a change of values and worldviews. But if one’ssuicide attempt proves unsuccessful, the question becomes how to explain to oneselfand others one’s recent act of self-violence. To discover these explanations, weconducted a study of 319 people, ranging in age from 18 to 25; they were all eitherstudents (n = 156 or patients in an emergency toxicology ward (people who hadattempted to poison themselves, n = 163. This article summarizes theories of suicidalbehavior and of the fear of death together with the ideas of cultural anthropologistE. Becker on these matters and puts suicide into the terror-managementperspective. The suicidal act is viewed as a mortality salience, and the hypothesisis that people who deny their recent suicide attempt (n = 33 and who have one (n= 95 or several (n = 35 suicide attempts in their personal history exhibit differentterror-management patterns in comparison with each other and with the controlgroup. They fall back on different resources with various degrees of effectiveness.Implications of these results for understanding suicidal and postsuicidal behaviorare discussed and suggestions for rehabilitation are made.

  19. Att bygga en brandbook : ett projekt i att ena ett företag och dess verksamheter

    OpenAIRE

    Norberg, Jenny; Sahlberg, Anna

    2010-01-01

    The purpose of this report is to develop a visual identity and a brand book for the company Yakobs Ram & Reklam (Yakobs Frame and Advertising). To answer the question of how a brand book should be designed for a company that manage several businesses within one brand a qualitative approach including a case study has been conducted.This qualitative method included research on brand building, logotypes, colour, design and typography and interviews with the company Yakobs Ram & Reklam an...

  20. Measuring Attitudes About Intimate Partner Violence Against Women: The ATT-IPV Scale

    OpenAIRE

    Yount, Kathryn M.; VanderEnde, Kristin; Zureick-Brown, Sarah; Anh, Hoang Tu; Schuler, Sidney Ruth; Minh, Tran Hung

    2014-01-01

    In lower-income settings, women more often than men justify intimate partner violence (IPV). Yet, the role of measurement invariance across gender is unstudied. We developed the ATT-IPV scale to measure attitudes about physical violence against wives in 1,055 married men and women ages 18–50 in My Hao district, Vietnam. Across 10 items about transgressions of the wife, women more often than men agreed that a man had good reason to hit his wife (3 % to 92 %; 0 % to 67 %). In random split-half ...

  1. IK "HOLS" attīstības stratēģija

    OpenAIRE

    Zvirgzds, Jānis

    2011-01-01

    Tā kā gan valsts, gan starptautiskā līmenī nepārtraukti notiek straujas un bieži vien pretrunīgas izmaiņas, tad, lai tām pielāgotos vai tās izmantotu, uzņēmumam jāanalizē šo pārmaiņu ietekme uz tā saimniecisko darbību un nepārtraukti jāattīstās. Darba mērķis: izstrādāt individuālā komersanta „Hols” attīstības stratēģiju, pamatojoties uz uzņēmējdarbības iekšējās un ārējās vides analīzi. Bakalaura darba rezultātā noskaidrots, ka pēdējos gados uzņēmējdarbības ārējā vide, ir īpaši ekonomisk...

  2. Att arbeta med musik i förskolan : Betydelsen av pedagogens syn på musik

    OpenAIRE

    Hjelm, Alexandra; Abrahamsson, Frida

    2017-01-01

    Syftet med studien är att undersöka hur pedagogens syn på musik påverkar hur de arbetar med musik i förskolans verksamhet. Studiens tre frågeställningar är - Vad anser pedagoger ingår i begreppet musik? Vilka kunskaper anser sig pedagoger behöva för att undervisa i och arbeta med musik i förskolan? samt I vilket syfte använder pedagoger musik i förskolan? Datainsamlingen gjordes genom delvis strukturerade kvalitativa intervjuer med sex pedagoger i en större stad. Resultatet visar att musik sk...

  3. House owners' views on investing in district heating - a study of applied sales strategies and the customers choice at conversion from electric heating; Smaahusaegarnas syn paa att koepa fjaerrvaerme - en studie av tillaempade foersaeljningsstrategier och kunders val vid konvertering fraan direktverkande el

    Energy Technology Data Exchange (ETDEWEB)

    Sernhed, Kerstin; Pyrko, Jurek [Div. of Efficient Energy Systems, Dept. of Energy Sciences, Lund University, Lund (Sweden)

    2006-07-15

    This report presents results from the project 'Converting direct resistive electric heating into district heating - customer related aspects'. The main objective of this study was to investigate how specific households within one housing area (Sandsbro in Vaexjoe with 110 one-family houses) experienced the conversion process, in order to understand the reasons behind 'yes' or 'no' responses to the utility's offer. A qualitative approach with semi-structured in-depth interviews with a specially selected sample of households from 10 converted and 13 not converted houses was chosen as the main method. The investigation led to the following conclusions and recommendations: Household reactions to the terms of sale and conversion: Many households felt that the decisions were rushed - there is a need for better planning, especially for the older households. The information provided was evaluated as detailed and sufficient. The 'demonstration villa' was a good idea but the installation should be done more professionally - aesthetics are very important here. Home visits were the only personal contact and should be conducted in all houses in order to answer questions and explain problems. Co-ordination of excavation should be better in order to limit the time the ground is open. A few of the households undertook some of the works themselves to reduce costs but the compensation was often considered as too low to motivate customers. Household opinions on the product and/or service: Almost all households felt that the thermal comfort was better than before - more stable indoor temperature, no problems with overheated radiators or smell of burning dust. On the other hand, hot water comfort was worse - longer waiting time for hot water and too low water temperature during summer. Aesthetics were considered very important and could be crucial for the decision to convert the heating system. Many of the interviewed households were

  4. Klienten i ett förändringsskede : att genom empowerment stöda livshanteringen hos klienter med kronisk sjukdom

    OpenAIRE

    Erlund, Frida

    2010-01-01

    Detta examensarbete utgör en del av projektet Tillgång, Aktivitet och Gemenskap – T.A.G i livet. Syftet med projektet är att stöda vuxna och äldre klienter till självständighet och bättre funktionsförmåga, genom att utveckla nya serviceformer och metoder för egenvård. Projektets mål är också att främja klienternas förmåga att upprätthålla eller förbättra deras hälsa, välmående och funktionsförmåga samt att förebygga social och samhällelig marginalisering som är förknippad med hälsa och livsha...

  5. 76 FR 44036 - Proposed Low-Effect Habitat Conservation Plan for the California Tiger Salamander, AT&T Portable...

    Science.gov (United States)

    2011-07-22

    ...] Proposed Low-Effect Habitat Conservation Plan for the California Tiger Salamander, AT&T Portable Generator... Federally listed animal, the California tiger salamander. The applicant would implement a conservation... permanently convert 1.24 acres of upland grassland habitat for the California tiger salamander into a new...

  6. Measuring attitudes about women's recourse after exposure to intimate partner violence: the ATT-RECOURSE scale.

    Science.gov (United States)

    Yount, Kathryn M; VanderEnde, Kristin; Zureick-Brown, Sarah; Minh, Tran Hung; Schuler, Sidney Ruth; Anh, Hoang Tu

    2014-06-01

    Attitudes about intimate partner violence (IPV) against women are widely surveyed, but attitudes about women's recourse after exposure to IPV are understudied, despite their importance for intervention. Designed through qualitative research and administered in a probability sample of 1,054 married men and women 18 to 50 years in My Hao District, Vietnam, the ATT-RECOURSE scale measures men's and women's attitudes about a wife's recourse after exposure to physical IPV. Data were initially collected for nine items. Exploratory factor analysis (EFA) with one random split-half sample (N 1 = 526) revealed a one-factor model with significant loadings (0.316-0.686) for six items capturing a wife's silence, informal recourse, and formal recourse. A confirmatory factor analysis (CFA) with the other random split-half sample (N 2 = 528) showed adequate fit for the six-item model and significant factor loadings of similar magnitude to the EFA results (0.412-0.669). For the six items retained, men consistently favored recourse more often than did women (52.4%-66.0% of men vs. 41.9%-55.2% of women). Tests for uniform differential item functioning (DIF) by gender revealed one item with significant uniform DIF, and adjusting for this revealed an even larger gap in men's and women's attitudes, with men favoring recourse, on average, more than women. The six-item ATT-RECOURSE scale is reliable across independent samples and exhibits little uniform DIF by gender, supporting its use in surveys of men and women. Further methodological research is discussed. Research is needed in Vietnam about why women report less favorable attitudes than men regarding women's recourse after physical IPV.

  7. Inhibitory effects of a selective Jak2 inhibitor on adrenocorticotropic hormone production and proliferation of corticotroph tumor AtT20 cells

    Directory of Open Access Journals (Sweden)

    Asari Y

    2017-09-01

    Full Text Available Yuko Asari, Kazunori Kageyama, Yuki Nakada, Mizuki Tasso, Shinobu Takayasu, Kanako Niioka, Noriko Ishigame, Makoto Daimon Department of Endocrinology and Metabolism, Graduate School of Medicine, Hirosaki University, Hirosaki, Japan Purpose: The primary cause of Cushing’s disease is adrenocorticotropic hormone (ACTH-producing pituitary adenomas. EGFR signaling induces POMC mRNA-transcript levels and ACTH secretion from corticotroph tumors. The Jak–STAT pathway is located downstream of EGFR signaling; therefore, a Jak2 inhibitor could be an effective therapy for EGFR-related tumors. In this study, we determined the effect of a potent and selective Jak2 inhibitor, SD1029, on ACTH production and proliferation in mouse AtT20 corticotroph tumor cells.Materials and methods: AtT20 pituitary corticotroph tumor cells were cultured after transfection with PTTG1- or GADD45β-specific siRNA. Expression levels of mouse POMC, PTTG1, and GADD45β mRNAs were evaluated using quantitative real-time polymerase chain reaction. ACTH levels were measured using ACTH ELISA. Western blot analysis was performed to examine protein expression of phosphorylated STAT3/STAT3. Viable cells and DNA fragmentation were measured using a cell-proliferation assay and cell-death detection ELISA, respectively. Cellular DNA content was analyzed using fluorescence-activated cell sorting.Results: SD1029 decreased POMC and PTTG1 mRNA and ACTH levels, while increasing GADD45β levels. The drug also decreased AtT20-cell proliferation and induced apoptosis, but did not alter cell-cycle progression. SD1029 also inhibited STAT3 phosphorylation. PTTG1 knockdown inhibited POMC mRNA levels and cell proliferation. However, combined treatment with PTTG1 knockdown and SD1029 had no additive effect on POMC mRNA levels or cell proliferation. GADD45β knockdown inhibited the SD1029-induced decrease in POMC mRNA levels and also partially inhibited the decrease in cell proliferation.Conclusion: Both

  8. Främja medarbetarnas engagemang : Ett ledarskapsverktyg för att öka engagemang och undvika utbrändhet

    OpenAIRE

    Järnström, Ida

    2016-01-01

    De senaste åren har engagemang varit ett mycket omtalat ämne, då forskning har visat att engagemang har en positiv inverkan på organisationens framgång. Dagens turbulenta värld tvingar dock organisationerna att kräva högre prestationer av sina medarbetare trots färre resurser, vilket kan resultera i oengagemang och utbrändhet. Detta bekräftas utgående från gallupundersökningar, vilka visar att en endast en liten del av medarbetarna verkligen är engagerade på sina arbetsplatser. Syftet med...

  9. Vērtspapīru tirgus attīstība Baltijas valstīs

    OpenAIRE

    Kalniņa, Margarita

    2012-01-01

    Bakalaura darba mērķis bija noteikt vērtspapīra tirgus attīstības tendences, salīdzināt Baltijas akciju tirgus rādītājus un pamatojoties uz iegūtajiem rezultātiem, novērtēt Baltijas akciju tirgus attīstības tendences. Darba pamatuzdevumos ietilpa pašreizējā Baltijas akciju tirgus stāvokļa analīze. Izstrādātais darbs sastāv no trim daļām. Pirmajā daļā tiek dots īss vērtspapīra tirgus vispārīgais raksturojums un vērtspapīru tirgus instrumentu raksturojums. Darba otrajā daļā tiek doti Baltij...

  10. Att transferera en roman. Die Klavierspielerin mellan det österrikiska, tyska och svenska kritikerfältet

    OpenAIRE

    Larsson, Kristian

    2016-01-01

    Transferring a Novel. The Piano Teacher between the Austrian, German, and Swedish fields of literary criticism (Att transferera en roman. Die Klavierspielerin mellan det österrikiska, tyska och svenska kritikerfältet) The purpose of the essay is to examine the literary transfer of Elfriede Jelinek’s commercial breakthrough novel The Piano Teacher (Die Klavierspielerin, 1983) between Austria, Germany, and Sweden. The phenomenon of literary transfer essentially feeds on powerful mechanisms of l...

  11. The silent codon change I507-ATC->ATT contributes to the severity of the ΔF508 CFTR channel dysfunction.

    Science.gov (United States)

    Lazrak, Ahmed; Fu, Lianwu; Bali, Vedrana; Bartoszewski, Rafal; Rab, Andras; Havasi, Viktoria; Keiles, Steve; Kappes, John; Kumar, Ranjit; Lefkowitz, Elliot; Sorscher, Eric J; Matalon, Sadis; Collawn, James F; Bebok, Zsuzsanna

    2013-11-01

    The most common disease-causing mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene is the out-of-frame deletion of 3 nucleotides (CTT). This mutation leads to the loss of phenylalanine-508 (ΔF508) and a silent codon change (SCC) for isoleucine-507 (I507-ATC→ATT). ΔF508 CFTR is misfolded and degraded by endoplasmic reticulum-associated degradation (ERAD). We have demonstrated that the I507-ATC→ATT SCC alters ΔF508 CFTR mRNA structure and translation dynamics. By comparing the biochemical and functional properties of the I507-ATT and I507-ATC ΔF508 CFTR, we establish that the I507-ATC→ATT SCC contributes to the cotranslational misfolding, ERAD, and to the functional defects associated with ΔF508 CFTR. We demonstrate that the I507-ATC ΔF508 CFTR is less susceptible to the ER quality-control machinery during translation than the I507-ATT, although 27°C correction is necessary for sufficient cell-surface expression. Whole-cell patch-clamp recordings indicate sustained, thermally stable cAMP-activated Cl(-) transport through I507-ATC and unstable function of the I507-ATT ΔF508 CFTR. Single-channel recordings reveal improved gating properties of the I507-ATC compared to I507-ATT ΔF508 CFTR (NPo=0.45±0.037 vs. NPo=0.09±0.002; P<0.001). Our results signify the role of the I507-ATC→ATT SCC in the ΔF508 CFTR defects and support the importance of synonymous codon choices in determining the function of gene products.

  12. ”Det enda säkra är att vi inte kommer att följa planen” : En kvalitativ studie av tillämpningen av kriskommunikationsteorier för att skydda anseendet

    OpenAIRE

    Molin, Anders; Olsson, Hanna

    2015-01-01

    The value of a good reputation for organizations is increasing today as consumers and citizens become more aware of brands. If a crisis hits an organization, there is now more to lose than before concerning reputation. Therefore the organization’s communication strategies must be developed to sustain the organization’s reputation during and after a crisis. In the field of crisis communication there are two distinguished theories which concern what an organization with help from crisis communi...

  13. Empowermentprocesser – ett sätt att öka långtidssjukskrivna kvinnors resurser? : En studie om att återta balansen i arbetslivet att återta balansen i arbetslivet

    OpenAIRE

    Larsson, Ann-Christine

    2007-01-01

    The aim of the thesis is to understand and explain how a group of women have ended up on the long-term sick-list and how a return to working life can be brought about. Support for their return is organized within the framework of a R&D project within the EU-program EQUAL, where empowerment is one of the key principles. The research has been carried out using an interactive approach in close collaboration with the women in the project who have been signed-off long-term on medical grounds. ...

  14. Measuring Attitudes About Intimate Partner Violence Against Women: The ATT-IPV Scale

    Science.gov (United States)

    Yount, Kathryn M.; VanderEnde, Kristin; Zureick-Brown, Sarah; Anh, Hoang Tu; Schuler, Sidney Ruth; Minh, Tran Hung

    2014-01-01

    In lower-income settings, women more often than men justify intimate partner violence (IPV). Yet, the role of measurement invariance across gender is unstudied. We developed the ATT-IPV scale to measure attitudes about physical violence against wives in 1,055 married men and women ages 18–50 in My Hao district, Vietnam. Across 10 items about transgressions of the wife, women more often than men agreed that a man had good reason to hit his wife (3 % to 92 %; 0 % to 67 %). In random split-half samples, one-factor exploratory factor analysis (EFA) (N1 = 527) and confirmatory factor analysis (CFA) (N2 = 528) models for nine items with sufficient variability had significant loadings (0.575–0.883; 0.502–0.897) and good fit (RMSEA = 0.068, 0.048; CFI = 0.951, 0.978, TLI = 0.935, 0.970). Three items had significant uniform differential item functioning (DIF) by gender, and adjustment for DIF revealed that measurement noninvariance was partially masking men’s lower propensity than women to justify IPV. A CFA model for the six items without DIF had excellent fit (RMSEA = 0.019, CFI = 0.994, TLI = 0.991) and an attitudinal gender gap similar to the DIF-adjusted nine-item model, suggesting that the six-item scale reliably measures attitudes about IPV across gender. Researchers should validate the scale in urban Vietnam and elsewhere and decompose DIF-adjusted gender attitudinal gaps. PMID:24846070

  15. Measuring attitudes about intimate partner violence against women: the ATT-IPV scale.

    Science.gov (United States)

    Yount, Kathryn M; VanderEnde, Kristin; Zureick-Brown, Sarah; Anh, Hoang Tu; Schuler, Sidney Ruth; Minh, Tran Hung

    2014-08-01

    In lower-income settings, women more often than men justify intimate partner violence (IPV). Yet, the role of measurement invariance across gender is unstudied. We developed the ATT-IPV scale to measure attitudes about physical violence against wives in 1,055 married men and women ages 18-50 in My Hao district, Vietnam. Across 10 items about transgressions of the wife, women more often than men agreed that a man had good reason to hit his wife (3 % to 92 %; 0 % to 67 %). In random split-half samples, one-factor exploratory factor analysis (EFA) (N 1 = 527) and confirmatory factor analysis (CFA) (N 2 = 528) models for nine items with sufficient variability had significant loadings (0.575-0.883; 0.502-0.897) and good fit (RMSEA = 0.068, 0.048; CFI = 0.951, 0.978, TLI = 0.935, 0.970). Three items had significant uniform differential item functioning (DIF) by gender, and adjustment for DIF revealed that measurement noninvariance was partially masking men's lower propensity than women to justify IPV. A CFA model for the six items without DIF had excellent fit (RMSEA = 0.019, CFI = 0.994, TLI = 0.991) and an attitudinal gender gap similar to the DIF-adjusted nine-item model, suggesting that the six-item scale reliably measures attitudes about IPV across gender. Researchers should validate the scale in urban Vietnam and elsewhere and decompose DIF-adjusted gender attitudinal gaps.

  16. 75 FR 10554 - Privacy Act of 1974; System of Records Notice

    Science.gov (United States)

    2010-03-08

    ... Primary Data Center AT&T Data Center, Ashburn, VA 20147. NIC Secondary Data Center AT&T Data Center, Allen... (PSP), as required by 49 U.S.C. 31150. The system of records will make crash and inspection data about... to submit a Freedom of Information Act (FOIA) request or Privacy Act request to FMCSA for the data...

  17. BWID System Design Study

    International Nuclear Information System (INIS)

    O'Brien, M.C.; Rudin, M.J.; Morrison, J.L.; Richardson, J.G.

    1991-01-01

    The mission of the Buried Waste Integrated Demonstration (BWID) System Design Study is to identify and evaluate technology process options for the cradle-to-grave remediation of Transuranic (TRU)-Contaminated Waste Pits and Trenches buried at the Idaho National Engineering Laboratory (INEL). Emphasis is placed upon evaluating system configuration options and associated functional and operational requirements for retrieving and treating the buried wastes. A Performance-Based Technology Selection Filter was developed to evaluate the identified remediation systems and their enabling technologies based upon system requirements and quantification of technical Comprehensive Environmental Response, Compensation, and Liability (CERCLA) balancing criteria. Remediation systems will also be evaluated with respect to regulatory and institutional acceptance and cost-effectiveness

  18. Marketing Automation – en studie om ett modernt marknadsföringsverktyg i en svensk kontext

    OpenAIRE

    Hendén, Stefan; Dahlgren, Andreas

    2016-01-01

    I takt med att digitala medier har utvecklats under de senaste åren har köpresan för-ändrats till att kunder idag i ett mycket senare skede släpper in leverantörer i dialogen. Marketing Automation adresserar den problembilden och har växt fram som en brygga mellan sälj- och marknadsprocessen. Systemet ger möjlighet att effektivt och automatiserat utveckla leads (potentiell kund). Syftet med denna studie är att undersöka hur Marketing Automation påverkar sälj- och marknadsprocesserna. Vilka fö...

  19. Teknik i de tidiga skolåren – om vad det innebär att kunna konstruera en länkmekanismTechnical knowing in the early school years – A learning study of the meaning of knowing how to construct a linkage mechanism

    Directory of Open Access Journals (Sweden)

    Eva Björkholm

    2015-03-01

    Full Text Available This study within primary technology education aims at exploring the capability to construct a specific linkage mechanism. The study reported was integrated in a Learning study, a kind of design experiment inspired by the Japanese Lesson Study, and was carried out in collaboration with two primary school teachers and their two classes, a preschool class and a grade one class. The study reports on the analysis of the video-recorded pre- and post-test. The tests were analysed phenomenographically resulting in four categories describing qualitatively different ways of experiencing the object of learning. The categories were then analysed in terms of critical aspects, describing aspects necessary to discern for this group of students in order to learn how to construct a linkage mechanism. The result indicates the importance of discerning the two joints and their different characteristics in terms of a fixed and a moving joint as well as the placement of the moving joint in relation to the resulting movement.

  20. Att tillämpa återkommande mätning av kundnöjdhet i IT-projekt : En vidareutvecklad modell baserad på modellerna American Customer Satisfaction Index (ACSI) och SERVQUAL

    OpenAIRE

    Karlmats, Roberg; Karlsson, Daniel

    2015-01-01

    I dagens samhälle är det allt viktigare för företag att behålla sina existerande kunder då konkurrensen blir allt hårdare. Detta medför att företag försöker vidta åtgärder för att vårda relationer med sina kunder. Detta problem är även högst relevant inom IT-branschen. Inom IT-branschen är det vanligt att arbeta agilt i IT-projekt. Vår samarbetspartner har sett ett ökat behov av att mäta servicekvalitet på ett återkommande sätt inom IT-projekt, detta för att mäta relevanta variabler som sträc...

  1. Portable treatment systems study

    International Nuclear Information System (INIS)

    Sherick, M.J.; Schwinkendorf, W.E.; Bechtold, T.E.; Cole, L.T.

    1997-03-01

    In developing their Site Treatment Plans (STPs), many of the Department of Energy installations identified some form of portable treatment, to facilitate compliant disposition of select mixed low-level wastestreams. The Environmental Management Office of Science and Technology requested that a systems study be performed to better define the potential role of portable treatment with respect to mixed low-level waste, highlight obstacles to implementation, and identify opportunities for future research and development emphasis. The study was performed by first establishing a representative set of mixed waste, then formulating portable treatment system concepts to meet the required processing needs for these wastes. The portable systems that were conceptualized were evaluated and compared to a fixed centralized treatment alternative. The system evaluations include a life-cycle cost analysis and an assessment of regulatory, institutional, and technical issues associated with the potential use of portable systems. The results of this study show that when all costs are included, there are no significant cost differences between portable systems and fixed systems. However, it is also emphasized that many uncertainties exist that could impact the cost of implementing portable treatment systems. Portable treatment could be made more attractive through private sector implementation, although there is little economic incentive for a commercial vendor to develop small, specialized treatment capabilities with limited applicability. Alternatively, there may also be valid reasons why fixed units cannot be used for some problematic wastestreams. In any event, there are some site-specific problems that still need to be addressed, and there may be some opportunity for research and development to make a positive impact in these areas

  2. Portable treatment systems study

    Energy Technology Data Exchange (ETDEWEB)

    Sherick, M.J.; Schwinkendorf, W.E.; Bechtold, T.E.; Cole, L.T.

    1997-03-01

    In developing their Site Treatment Plans (STPs), many of the Department of Energy installations identified some form of portable treatment, to facilitate compliant disposition of select mixed low-level wastestreams. The Environmental Management Office of Science and Technology requested that a systems study be performed to better define the potential role of portable treatment with respect to mixed low-level waste, highlight obstacles to implementation, and identify opportunities for future research and development emphasis. The study was performed by first establishing a representative set of mixed waste, then formulating portable treatment system concepts to meet the required processing needs for these wastes. The portable systems that were conceptualized were evaluated and compared to a fixed centralized treatment alternative. The system evaluations include a life-cycle cost analysis and an assessment of regulatory, institutional, and technical issues associated with the potential use of portable systems. The results of this study show that when all costs are included, there are no significant cost differences between portable systems and fixed systems. However, it is also emphasized that many uncertainties exist that could impact the cost of implementing portable treatment systems. Portable treatment could be made more attractive through private sector implementation, although there is little economic incentive for a commercial vendor to develop small, specialized treatment capabilities with limited applicability. Alternatively, there may also be valid reasons why fixed units cannot be used for some problematic wastestreams. In any event, there are some site-specific problems that still need to be addressed, and there may be some opportunity for research and development to make a positive impact in these areas.

  3. Internprissättning inom offentlig verksamhet – en kvalitativ studie om internprissättning som styrverktyg

    OpenAIRE

    Neziri, Burim

    2012-01-01

    Syftet med denna studie var att undersöka i vilken utsträckning implementeras internprissättningen inom Karlskrona kommun samt vilken roll har internprissättningen för organisationen. I min studie har jag kommit fram till att inom en offentlig verksamhet som är en divisionaliserad organisation, är internprissättningen ett viktigt styrverktyg. Detta bidrar till att offentliga organisationer underlättas till att följa upp resultatenheterna inom organisationen, man får en rättvis kostnadsfördeln...

  4. The silent codon change I507-ATC→ATT contributes to the severity of the ΔF508 CFTR channel dysfunction

    Science.gov (United States)

    Lazrak, Ahmed; Fu, Lianwu; Bali, Vedrana; Bartoszewski, Rafal; Rab, Andras; Havasi, Viktoria; Keiles, Steve; Kappes, John; Kumar, Ranjit; Lefkowitz, Elliot; Sorscher, Eric J.; Matalon, Sadis; Collawn, James F.; Bebok, Zsuzsanna

    2013-01-01

    The most common disease-causing mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene is the out-of-frame deletion of 3 nucleotides (CTT). This mutation leads to the loss of phenylalanine-508 (ΔF508) and a silent codon change (SCC) for isoleucine-507 (I507-ATC→ATT). ΔF508 CFTR is misfolded and degraded by endoplasmic reticulum-associated degradation (ERAD). We have demonstrated that the I507-ATC→ATT SCC alters ΔF508 CFTR mRNA structure and translation dynamics. By comparing the biochemical and functional properties of the I507-ATT and I507-ATC ΔF508 CFTR, we establish that the I507-ATC→ATT SCC contributes to the cotranslational misfolding, ERAD, and to the functional defects associated with ΔF508 CFTR. We demonstrate that the I507-ATC ΔF508 CFTR is less susceptible to the ER quality-control machinery during translation than the I507-ATT, although 27°C correction is necessary for sufficient cell-surface expression. Whole-cell patch-clamp recordings indicate sustained, thermally stable cAMP-activated Cl− transport through I507-ATC and unstable function of the I507-ATT ΔF508 CFTR. Single-channel recordings reveal improved gating properties of the I507-ATC compared to I507-ATT ΔF508 CFTR (NPo=0.45±0.037 vs. NPo=0.09±0.002; P<0.001). Our results signify the role of the I507-ATC→ATT SCC in the ΔF508 CFTR defects and support the importance of synonymous codon choices in determining the function of gene products.—Lazrak, A., Fu, L., Bali, V., Bartoszewski, R., Rab, A., Havasi, V., Keiles, S., Kappes, J., Kumar, R., Lefkowitz, E., Sorscher, E. J., Matalon, S., Collawn, J. F., Bebok, Z. The silent codon change I507-ATC→ATT contributes to the severity of the ΔF508 CFTR. PMID:23907436

  5. Advanced drilling systems study.

    Energy Technology Data Exchange (ETDEWEB)

    Pierce, Kenneth G.; Livesay, Billy Joe; Finger, John Travis (Livesay Consultants, Encintas, CA)

    1996-05-01

    This report documents the results of a study of advanced drilling concepts conducted jointly for the Natural Gas Technology Branch and the Geothermal Division of the U.S. Department of Energy. A number of alternative rock cutting concepts and drilling systems are examined. The systems cover the range from current technology, through ongoing efforts in drilling research, to highly speculative concepts. Cutting mechanisms that induce stress mechanically, hydraulically, and thermally are included. All functions necessary to drill and case a well are considered. Capital and operating costs are estimated and performance requirements, based on comparisons of the costs for alternative systems to conventional drilling technology, are developed. A number of problems common to several alternatives and to current technology are identified and discussed.

  6. Underwater Glider System Study

    OpenAIRE

    Jenkins, Scott A; Humphreys, Douglas E; Sherman, Jeff; Osse, Jim; Jones, Clayton; Leonard, Naomi; Graver, Joshua; Bachmayer, Ralf; Clem, Ted; Carroll, Paul; Davis, Philip; Berry, Jon; Worley, Paul; Wasyl, Joseph

    2003-01-01

    The goals of this study are to determine how to advance from present capabilities of underwater glider (and hybrid motorglider) technology to what could be possible within the next few years; and to identify critical research issues that must be resolved to make such advancements possible. These goals were pursued by merging archival flight data with numerical model results and system spreadsheet analysis to extrapolate from the present state-of-the–art in underwater (UW) gliders to potential...

  7. Virtuālas organizācijas SIA "MUO" attīstības iespējas

    OpenAIRE

    Ivanovs, Viktors

    2012-01-01

    Bakalaura darba tēma: „Virtuālas organizācijas attīstības iespēja”. Darba mērķis ir izpētīt SIA „MUO” biznesa modeļa attīstības iespēju. Bakalaura darbs sastāv no ievada, 2 nodaļām un to apakšnodaļām, secinājumiem un priekšlikumiem, literatūras saraksta un pielikuma. Pirmajā daļā tiek apskatīti organizāciju teorētiskie jautājumi: organizāciju būtība, iekšēja un ārēja vide, biznesa modeļi, dalībnieki un produkts. Darba otrajā nodaļā aprakstīta SIA „MUO” darbība un produkts, ...

  8. Kvinnors sätt att leda : - berättelser från fyra finska kvinnor i ledande positioner

    OpenAIRE

    Korkeakunnas, Tea

    2012-01-01

    Sammanfattning Datum: 2012.06.08 Nivå: D-uppsats i företagsekonomi 15 hp Författare: Tea Korkeakunnas Handledare: Docent Birgitta Schwartz Titel: Kvinnors sätt att leda – berättelser från fyra finska kvinnor i ledande positioner Problem: Kvinnorna utgör minoritet i styrelser och chefpositioner, framför allt inom den privata sektorn. De möter andra hinder på deras karriärer än män. Kvinnorna har svårare att göra karriär. Dessutom finns det forskare som hävdar att det finns ett kvinnligt ledars...

  9. Detektion av “troll” i Twitterflöden med hjälp av klusteralgoritm : Metod för att detektera personer som sprider desinformation

    OpenAIRE

    Yousef, Andy; Lansner, Erik

    2016-01-01

    Sociala medier har alltid varit en plats där personer kan diskutera fritt om sina åsikter och dela nyheter med många. Lätt spridning av nyheter från alla hörn i världen kan komma vara användbart för att ha möjlighet att få opartiska nyheter. Även om det finns klara fördelar med exempelvis Twitter så kan det vara problematiskt med falska och uppgjorda nyheter. Ryktesspridning eller uppgjorda nyheter förekommer i stor utsträckning fortfarande, här testas metod(er) för att upptäcka vilka som kan...

  10. Hydrogen energy systems studies

    Energy Technology Data Exchange (ETDEWEB)

    Ogden, J.M.; Steinbugler, M.; Dennis, E. [Princeton Univ., NJ (United States)] [and others

    1995-09-01

    For several years, researchers at Princeton University`s Center for Energy and Environmental Studies have carried out technical and economic assessments of hydrogen energy systems. Initially, we focussed on the long term potential of renewable hydrogen. More recently we have explored how a transition to renewable hydrogen might begin. The goal of our current work is to identify promising strategies leading from near term hydrogen markets and technologies toward eventual large scale use of renewable hydrogen as an energy carrier. Our approach has been to assess the entire hydrogen energy system from production through end-use considering technical performance, economics, infrastructure and environmental issues. This work is part of the systems analysis activity of the DOE Hydrogen Program. In this paper we first summarize the results of three tasks which were completed during the past year under NREL Contract No. XR-11265-2: in Task 1, we carried out assessments of near term options for supplying hydrogen transportation fuel from natural gas; in Task 2, we assessed the feasibility of using the existing natural gas system with hydrogen and hydrogen blends; and in Task 3, we carried out a study of PEM fuel cells for residential cogeneration applications, a market which might have less stringent cost requirements than transportation. We then give preliminary results for two other tasks which are ongoing under DOE Contract No. DE-FG04-94AL85803: In Task 1 we are assessing the technical options for low cost small scale production of hydrogen from natural gas, considering (a) steam reforming, (b) partial oxidation and (c) autothermal reforming, and in Task 2 we are assessing potential markets for hydrogen in Southern California.

  11. L'atténuation intrinsèque des ondes sismiques. Troisième partie : Mécanismes régissant l'atténuation. Intrinsic Attenuation of Seismic Waves. Part Three: Mechanisms Governing Attenuation

    Directory of Open Access Journals (Sweden)

    Bourbie T.

    2006-11-01

    Full Text Available Les mécanismes qui régissent l'atténuation sont très complexes et encore mal compris actuellement. Certains mécanismes ont pu être éliminés comme le phénomène de frottement grain à grain du fait des amplitudes de déformation usuelles en sismique. Il. semble que les mécanismes responsables soient différents dans le cas de roches sèches (aux conditions de laboratoire et dans le cas de roches plus ou moins saturées. Dans le cas de roches sèchesl'atténuation semble provenir à la fois d'un hystérésis microcapillaire et d'une rupture des liaisons hydrogènes entre les hydroxyles de la surface et les molécules d'eau. Dans le cas de roches saturées, les candidats les plus probables au phénomène d'atténuation sont les mécanismes de Biot et de squirt flow . Le mécanisme de Biot est la possibilité d'avoir des mouvements différentiels globaux (ou plutôt moyennés à l'échelle de l'échantillon entre la matière solide et le fluide. Le squirt flowconsiste en un phénomène de relaxation visqueuse dont l'excitateur est extérieur : le liquide à l'intérieur de la cavité poreuse jaillit sous l'effet d'une pression de pore locale. The mechanisms governing attenuation are highly complex and still poorly understood at present. Some mechanisms have been eliminated, such as the grain-to-grain friction, due to the usual deformation amplitudes in seismic exploration. The mechanisms responsible for attenuation seem to be different for dry rocks (under laboratory conditions and more or less saturated rocks. For dryrocks, attenuation seems to come from both a microcapillary hysteresis and a break of the hydrogen bonds between the surface hydroxyls and water molecules. For saturated rocks, the most probable causes of attenuation are Biot mechanisms and squirt flow. The Biot mechanism Is the possibility of having overall differential movements (or rather averaged ones on the scale of the sample between the solid matrix and the fluid

  12. Vad behöver eleverna undervisning i för att utveckla sitt skrivande? Förväntningsnormer och didaktiska beslut i svensklärares bedömningssamtal

    Directory of Open Access Journals (Sweden)

    Per Blomqvist

    2016-04-01

    Full Text Available I studien samtalar tre lärargrupper om elevers skrivande och skrivundervisning i ämnet svenska på gymnasiet. Det teoretiska perspektiv som läggs på dessa samtal är didaktiskt och inriktas på hur lärare formulerar och använder bedömningsinformation om elevers skrivande för beslut om skrivundervisningens innehåll. Resultatet visar att lärares bedömningar av elevers skrivande behandlar fler och delvis andra aspekter av skrivförmåga än vad deras didaktiska beslut sedan omfattar. De kvalitetsuppfattningar och förväntningsnormer som lärarna uttrycker i sina bedömningar av elevers skrivande inriktas huvudsakligen på texters kommunikativa kvaliteter, den stilistiska utformningen och textuppbyggnaden, följt av ämnesinnehåll och källanvändning. De didaktiska beslut som fattas utifrån bedömningen av elevers texter inriktas däremot i stort sett enbart på att eleverna behöver skrivundervisning i att disponera text och att använda källor. Detta gör att överensstämmelsen är låg mellan lärarnas beslut om skrivundervisningens inriktning och deras förväntningar på vad eleverna ska kunna. De didaktiska besluten omfattar i begränsad utsträckning den bedömningsinformation som lärarna själva har formulerat.Nyckelord: Skrivbedömning, kvalitetsuppfattningar, förväntningsnormer, didaktiska beslut, formativ bedömning, svenskämnets didaktik, svenska på gymnasietAbstractThis article presents an analysis of teacher group discussions about students’ writing in the subject of Swedish in upper secondary school. The study adopts a pedagogical perspective on these discussions and focuses on examining teachers’ expressed assessment criteria and relating them to their pedagogical decision-making. The results reveal that the teachers’ assessments of students’ writing focus on much more, and partly other, criteria than their pedagogical decisions. The quality standards that teachers express in the discussions about

  13. Predictors and Timing of ATT Initiation among HIV-TB Patients at ART Centers of Karnataka, India: Two Year Follow-Up.

    Directory of Open Access Journals (Sweden)

    Suresh Shastri

    Full Text Available In India, TB and HIV co-infection remains as a serious public health problem. From 2006 onwards, the intensified TB-HIV collaborative activities are being jointly implemented by National AIDS Control Programme (NACP and Revised National TB Control programme (RNTCP at high HIV burden states.To determine (a the predictors of outcome among a cohort of HIV-TB co-infected patients after two years after initiation of ART treatment. (b prognostic significance of time difference between the initiation of ATT and ART in HIV-TB co-infected patients.Patients registered at sixteen ART centres in Karnataka, from October through December 2009 formed the study cohort and were followed till December 2011.A total of 604 HIV-TB patients were registered. Follow-up (a at the end of one year had shown 63.6% (377patients with unfavorable TB treatment outcomes (b at the end of second year, 55.6% (336patients were alive on ART treatment. The variables male, smear negative TB, CD4 count less than 50cells per cumm and unfavorable TB outcome were significantly associated with unfavorable ART treatment outcome.The programmes need to review the existing strategies and strengthen HIV-TB collaborative activities for timely treatment initiation with intensive monitoring of HIV-TB patients on treatment.

  14. Nodokļu ietekme uz ekonomisko attīstību Latvijas Republikā

    OpenAIRE

    Zāģere, Elita

    2007-01-01

    Nodokļiem pieder centrālā loma valsts ekonomiskajos un politiskajos procesos. Nodokļi ir viens no svarīgākajiem elementiem valdības rīcībā, ar kuru palīdzību tā regulē un pārvalda ekonomiskos procesus un stimulē ekonomisko uzplaukumu. Diplomdarbā autors norāda mērķi, lai izpētītu nodokļu ietekmi uz ekonomisko attīstību un dziļāk saprastu Latvijas valsts ekonomisko stāvokli, valsts ekonomisko politiku un nodokļa darbības mehānismu.Pētījuma beigās, autors izstrāda secinājumus un priekšlikumus,...

  15. Windows un Linux serveru attālinātās administrēšanas iespējas.

    OpenAIRE

    Rapša, Dainis

    2010-01-01

    Kvalifikācijas darbā tiek apskatīti attālinātās administrēšanas rīku iespējas, izmantojot Windows un Linux operētājsistēmas. Darba gaitā tiek apskatīti un uzstādīti attālinātās administrēšanas rīki. Rīku priekšrocības un trūkumi Windows un Linux operētājsistēmā. Teorētiskajā daļā tiek apskatīti tīkla protokoli, kas ir cieši saistīti ar attālinātās administrēšanas rīku iespējām. Praktiskajā daļa tiek veikta attālinātās administrēšanas rīku instalēšana, konfigurēšana, salīdzināšana un administr...

  16. Vad och hur gör de? − att synliggöra lärande i grundskolans slöjdpraktik via videoetnografi och mikroanalys

    Directory of Open Access Journals (Sweden)

    Marléne Johansson

    2011-11-01

    Full Text Available Artikeln bygger på resultat och erfarenheter av etnografiskt insamlade videoinspelningar från grundskolans slöjdundervisning utgående från tre studier; dels vid ett projekt med förstudier under slutet av 1990-talet (Johansson, 1996, dels vid avhandlingsprojektet Slöjdpraktik i skolan (Johansson, 2002 och dels inom forskningsprojektet Kommunikation och lärande i slöjdpraktiker, (”Komolär-projektet”, under 2005−2010 (Lindström, Borg, Johansson & Lindberg, 2003.Att insamla empiri i autentiska slöjdmiljöer är av intresse då lärandesituationer kan synliggöras när elever med hjälp av material och redskap arbetar med att tillverka artefakter. Utifrån detaljerade analyser av slöjdaktiviteter går det att upptäcka det som utspelar sig och möjligheter ges att uppfatta något annat jämfört med vad man kan tro känna väl eller ha förenklade och till och med felaktiga uppfattningar om. Videoobservationer möjliggör att antaganden istället görs på empiriskt grundat datamaterial. Med risk att videofilma och analysera det man tror sig veta och söka har forskningsprojektens insamlingar mer förutsättningslöst arbetat efter vad och hur elever och lärare gör i slöjdpraktik och vad man får veta när slöjdaktiviteter analyseras mer ingående. Videomaterialen har analyserats både på en mer övergripande nivå och detaljerat med hjälp av mikroanalyser. Därefter har lärandet synliggjorts och beskrivits bland annat i teman för att visa hur personerna är resurser för varandra och hur lärandet utvecklas genom olika språkanvändning och med slöjdpraktikens fysiska redskap och material.Sökord: metod, slöjd, klassrumsforskning, videoetnografi, mikroanalysURN:NBN:no-29955

  17. A Pilot Study to Assess the Feasibility of Group Exercise and Animal-Assisted Therapy in Older Adults.

    Science.gov (United States)

    Grubbs, Brandon; Artese, Ashley; Schmitt, Karla; Cormier, Eileen; Panton, Lynn

    2016-04-01

    This pilot study assessed the feasibility of incorporating animal-assisted therapy teams (ATT) into a 6-week group exercise program for older adults (77 ± 6 years). Fifteen participants were randomly assigned to an exercise with ATT (E+ATT; n = 8) or exercise only (E; n = 7) group. Groups exercised 3x/week for 45 min. Feasibility was assessed by three objectives: (1) ATT will not need extensive preparation beyond their original therapy training; (2) the study will require minimal cost; and (3) ATT must not impair the effectiveness of the exercise program. By the study conclusion, all objectives were met. Time and cost were minimal for ATT, and adherence was 93% and 90% for E+ATT and E, respectively. There were significant improvements in both groups (p ≤ .05) for arm curls, get-up and go, and 6-min walk. The results of this pilot study suggest that it is feasible to incorporate ATT into group exercise programming for older adults.

  18. Tokamak reactor systems studies

    International Nuclear Information System (INIS)

    1992-01-01

    A summary of work completed on the ARIES project during this report period is given. The main areas of effort were: neutronics, shield optimization and design, safety, systems, startup and shutdown, and ripple loss

  19. Att öka mottagligheten för branded content genom hyper-personalisering : En användarstudie mot målgruppen för digitala tidskrifter inom populärkultur.

    OpenAIRE

    Sombo, Alexandros

    2015-01-01

    I denna studie utreder jag om hur branded content mottas av målgruppen för digitala tidskrifter inom populärkultur genom en framträdande teknik in webb-personalisering, hyper-personalisering. Målgruppen för denna studie är unga opinionsbildare som konsumerar innehåll från digitala tidskrifter som exempelvis Nöjesguiden. Branded content, sponsrat innehåll, är innehåll som skapas för att ett varumärke skall förknippas med en kreatörs målgrupp. Alltså kan ett varumärke be Nöjesguiden skapa redak...

  20. High performance addition-type thermoplastics (ATTs) - Evidence for the formation of a Diels-Alder adduct in the reaction of an acetylene-terminated material and a bismaleimide

    Science.gov (United States)

    Pater, R. H.; Soucek, M. D.; Chang, A. C.; Partos, R. D.

    1991-01-01

    Recently, the concept and demonstration of a new versatile synthetic reaction for making a large number of high-performance addition-type thermoplastics (ATTs) were reported. The synthesis shows promise for providing polymers having an attractive combination of easy processability, good toughness, respectable high temperature mechanical performance, and excellent thermo-oxidative stability. The new chemistry involves the reaction of an acetylene-terminated material with a bismaleimide or benzoquinone. In order to clarify the reaction mechanism, model compound studies were undertaken in solutions as well as in the solid state. The reaction products were purified by flash chromatography and characterized by conventional analytical techniques including NMR, FT-IR, UV-visible, mass spectroscopy, and high pressure liquid chromatography. The results are presented of the model compound studies which strongly support the formation of a Diels-Alder adduct in the reaction of an acetylene-terminated compound and a bismaleimide or benzoquinone.

  1. Flywheel driving system study

    Energy Technology Data Exchange (ETDEWEB)

    Chang, Seop Koh; Choi, Jae Ho; Jeoung, Hwan Myoung; Lee, Byoung Gu [Chungbuk National University, Cheongju (Korea)

    1999-03-01

    In this research, the superconductivity flywheel energy storage system, which transform the D.C electric power to mechanical energy by rotating the flywheel very high speed and vice verse, is designed and constructed. The system has a power converter and BLDC motor as a driver. In order to increase the efficiency of the motor, a special Halbach array of Nd-Fe-B permanent magnet, which remnant magnetic flux density is about 1.2(T), is used. The developed power converter employed PLL and Sin ROM for the accurate phase detection at the very high speed, and sine wave control of the input current is achieved by using hysteresis current control techniques. The flywheel energy storage system is experimental using both the superconducting bearing and ball bearing. (author). 20 refs., 55 figs., 4 tabs.

  2. Miljoner på spel : Hur svenska storbanker arbetar med intern kontroll för att förhindra, upptäcka och åtgärda individuell yrkesbaserad ekonomisk brottslighet.

    OpenAIRE

    Ekengren, Malin; Joona, Nikolina

    2012-01-01

    Bakgrund: Under senare år har skandaler inom svenska banker uppmärksammats. Det har senare visat sig att många skandaler har uppkommit till följd av brister inom den interna kontrollen. Samtidigt har antalet interna brott som begås på grund av en svag intern kontroll ökat trots att flera noterade bolag har ökat sina investeringar i den interna kontrollen. Banker har en viktig roll i samhället men den interna kontrollens betydelse för att motverka individuell yrkesbaserad ekonomisk brottslighe...

  3. LIGO vacuum system study

    Science.gov (United States)

    Livas, Jeffrey C.; Moore, Boude C.

    1988-01-01

    A laser interferometer gravitational wave observatory (LIGO) is being developed with sensitivities which will have a high probability of detecting gravitational waves from astrophysical sources. A major component of LIGO is a total of 16 km of 1.2 m (48 inch) diameter tube at a pressure of less than 10 to the minus 8th power torr. It will be of 304L stainless steel procured directly from the steel mills with the initial hydrogen content specially reduced. Projections of the outgassing rates of hydrogen and of water vapor as a function of time are given and the uncertainties discussed. Based on these, a preliminary analysis of the vacuum system is presented.

  4. Efeito da aplicação foliar de boro e zinco sobre a produção e os teores de SST e ATT dos frutos da Pereira-Japonesa e da pinheira Leaf spray fertilization of boron and zinc on production, SST and ATT in fruits of pear and sugar apple

    Directory of Open Access Journals (Sweden)

    Regina Célia Faria Simão Canesin

    2007-08-01

    is no research showing results on it. In this way, the aim of this study was to verify the effects of B and Zn applied on leaves on production, SST and ATT of pear fruit and sugar apple. The experiment was conducted on irrigated area in Ilha Solteira - SP, Brazil. A red brown Podzolic and plants of sugar apple and pear, Okussankichi cv. were used. The treatments were: T1. water, T2. boric acid, T3. zinc sulfate, T4. T2 + T3, T5. boric acid + urea + citric acid + EDTA, T6. zinc sulfate + urea + citric acid + EDTA, T7. T5 + T6, T8. boric acid + urea + citric acid + EDTA + sodium molibdate + sulfur + calcium chloride, T9. zinc sulfate + citric acid + EDTA + Fe sulfate + Mn sulfate + Mg sulfate and, T10. T8 +T9. It was used doses of 110 g ha-1 of B and 250 g ha-1 of Zn, in each application. A randomized blocks design was used and to compare the averages the Tukey test was applied. It can be concluded: a the production, SST and ATT of pear fruits and sugar apple fruits were not influenced by B and Zn leaf application, b boric acid plus quelates were efficient to supply B to pear plants but not to sugar apple plants, c Zn sulfate plus quelates caused an increase in Zn leaf content only in pear plants.

  5. Darījuma braucienu attīstība globālās ekonomikas apstākļos

    OpenAIRE

    Skurats, Vitālijs

    2014-01-01

    Diplomdarbā „Darījuma braucienu attīstība globālās ekonomikas apstākļos” ir apskatīti mūsdienu darījuma braucienu organizēšanas aspekti. Par tēmas aktualitāti liecina tas, ka neskatoties uz tūrisma nozares lielumu un pozitīvo ietekmi uz globālo ekonomisko stāvokli, darījuma braucienu organizēšanas praksei joprojām netiek pievērsta pietiekama uzmanība. Pētījuma mērķis ir noteikt nozīmīgākos darījuma braucienu organizēšanas attīstības virzienus, noskaidrot pakalpojumu sniegšanas izaicinājum...

  6. IKEA:s gråa hål : Hur IKEA kan få 50+ att handla mer möbler

    OpenAIRE

    Fredriksson, Patrik; Persson, Sebastian

    2008-01-01

    Syfte: Uppsatsen syfte är att beskriva och analysera varför IKEA-besökare i Karlstad, som tillhör kundgruppen 50+, väljer att inte handla möbler i samma utsträckning som de yngre besökarna. Metod: Uppsatsens undersökning grundas på en kvalitativ och en kvantitativ metod. Den kvalitativa metoden består av 20 öppna intervjuer med människor i kundgruppen 50+. Den kvantitativa metoden kompletterar den kvalitativa och består av frågeformulär som samtliga intervjuobjekt fick fylla i efter intervj...

  7. Fusion reactor systems studies

    International Nuclear Information System (INIS)

    1993-01-01

    Fusion Technology Institute personnel actively participated in the ARIES/PULSAR project during the present contract period. Numerous presentations were made at PULSAR project meetings, major contributions were written for the ARIES-II/IV Final Report presentations and papers were given at technical conferences contributions were written for the ARIES Lessons Learned report and a very large number of electronic-mail and regular-mail communications were sent. The remaining sections of this progress report win summarize the work accomplished and in progress for the PULSAR project during the contract period. The main areas of effort are: PULSAR Research; ARIES-II/IV Report Contributions; ARIES Lessons Learned Report Contributions; and Stellarator Study

  8. Klimata pārmaiņu adaptācija Latvijas lauku attīstībā

    OpenAIRE

    Paredne, Inguna

    2011-01-01

    Maģistra darbā „Klimata pārmaiņu adaptācija Latvijas ilgtspējīgā lauku attīstībā” pētīta klimata pārmaiņu adaptācijas norise vienā no galvenajiem lauku sektoriem-lauksaimniecībā, identificējot galvenās problēmas, nosakot mērķi, izvirzot hipotēzi un formulējot uzdevumus mērķa sasniegšanai. Analītiskajā daļā veikta literatūras analīze par vides pārvaldību un klimata adaptāciju, kā arī klimata pārmaiņu adaptāciju lauksaimniecības vidē pirmkārt, ierobežojot klimata pārmaiņas un otrkārt, pielāg...

  9. "Toore puuga kütmine on raiskamine ..." = "Att elda med sur ved är slöseri ..." : [luuletused] / Gunnar D. Hansson ; tlk. Mati Sirkel

    Index Scriptorium Estoniae

    Hansson, Gunnar D.

    2004-01-01

    Sisu: "Toore puuga kütmine on raiskamine ..." = "Att elda med sur ved är slöseri ..."; "Esimest päeva rändab tuul ..." = "Första dagen vandrar vinden ..."; "Päike tuli lähemale ..." = "Solen kom närmare ..."; "Nagu oleks kõik möödas ..." = "Som om allt vore över ..."

  10. Economy, energy and environment - Methods to analyze connections; Ekonomi, energi och miljoe - metoder att analysera samband

    Energy Technology Data Exchange (ETDEWEB)

    Ahlroth, Sofia; Finnveden, Goeran; Hochschorner Elisabeth [Royal Inst. of Technology, Stockholm (Sweden). Dept. of Industrial Ecology; Ekvall, Thomas [Chalmers Univ. of Technology, Goeteborg (Sweden). Dept. of Energy Systems Technology; Wadeskog, Anders; Palm, Viveka [Statistics Sweden, Stockholm (Sweden). Environmental Accounts

    2003-12-01

    This report gives a review of instruments that can be used for finding economic, structural and environmental effects of decisions in the environmental area, and describe what is possible to achieve, economically and technically. Twelve different aspects are used for characterizing the instruments. Applications and limitations of the instruments are discussed. For many instruments there exists a lively discussion on their weaknesses and limitations. We focus on system analytical instruments, i.e. environment-economic methods, energy and energy-economic modelling and environment-system-analytical tools In the economic area we discuss I/O-analyses, CGE-models and econometric models as well as a few descriptive analytica tools: Cost-benefit analysis, CBA and Life Cycle Analyses.

  11. Genrepedagogiska effekter : Elevers i åk Fk-3 motivation till att läsa

    OpenAIRE

    Kristiansson, Frida

    2016-01-01

    This study aims to study the relation between genre pedagogy and motivation to read for pu- pils in the ages of six-nine. My data contains the interviews that was performed. I experienced some difficulties in the search for respondents, therefore the study only has four respondents. The respondents are active teachers, who teach pupils in the ages of six-nine and have a gen- rebased pedagogy in their class. The study is a qualitative study, that are influenced by her- meneutics and constructi...

  12. PV solar system feasibility study

    International Nuclear Information System (INIS)

    Ashhab, Moh’d Sami S.; Kaylani, Hazem; Abdallah, Abdallah

    2013-01-01

    Highlights: ► This research studies the feasibility of PV solar systems. ► The aim is to develop the theory and application of a hybrid system. ► Relevant research topics are reviewed and some of them are discussed in details. ► A prototype of the PV solar system is designed and built. - Abstract: This research studies the feasibility of PV solar systems and aims at developing the theory and application of a hybrid system that utilizes PV solar system and another supporting source of energy to provide affordable heating and air conditioning. Relevant research topics are reviewed and some of them are discussed in details. Solar heating and air conditioning research and technology exist in many developed countries. To date, the used solar energy has been proved to be inefficient. Solar energy is an abundant source of energy in Jordan and the Middle East; with increasing prices of oil this source is becoming more attractive alternative. A good candidate for the other system is absorption. The overall system is designed such that it utilizes solar energy as a main source. When the solar energy becomes insufficient, electricity or diesel source kicks in. A prototype of the PV solar system that operates an air conditioning unit is built and proper measurements are collected through a data logging system. The measured data are plotted and discussed, and conclusions regarding the system performance are extracted.

  13. Space station operating system study

    Science.gov (United States)

    Horn, Albert E.; Harwell, Morris C.

    1988-01-01

    The current phase of the Space Station Operating System study is based on the analysis, evaluation, and comparison of the operating systems implemented on the computer systems and workstations in the software development laboratory. Primary emphasis has been placed on the DEC MicroVMS operating system as implemented on the MicroVax II computer, with comparative analysis of the SUN UNIX system on the SUN 3/260 workstation computer, and to a limited extent, the IBM PC/AT microcomputer running PC-DOS. Some benchmark development and testing was also done for the Motorola MC68010 (VM03 system) before the system was taken from the laboratory. These systems were studied with the objective of determining their capability to support Space Station software development requirements, specifically for multi-tasking and real-time applications. The methodology utilized consisted of development, execution, and analysis of benchmark programs and test software, and the experimentation and analysis of specific features of the system or compilers in the study.

  14. Att bygga manlig kropp och identitet : Mediabilder av bodybuilding i 1960-talets Sverige

    OpenAIRE

    Klinkert Egrenius, Ida

    2016-01-01

    This study is about how bodybuilders in the 1960s are produced in the Swedish media image. The purpose of the study is to clarify how the male, muscular, body and identity is portrayed in the media image. Through an analysis of how daily- and evening newspapers reported, negotiated and linguistically produced bodybuilding and its practitioners, I hope to access these representations which together can be considered to form a specific discourse about bodybuilding. The language used by journali...

  15. Undergraduate Students Attıtudes towards Educatıonal Uses of Internet

    OpenAIRE

    Usun, Salih

    2010-01-01

    The aim of this study was to determine the attitudes of undergraduate students towards the educational uses of the Internet. A 27-item questionnaire was administered to 207 undergraduate students at the Department of Computer and Instructional Technologies Education (CITE) of the Faculty of Education of Canakkale Onsekiz Mart University during the fall 2002 semester. The five items that met with the strongest agreement from the sample were the following: 1- The Internet is as important as ...

  16. RehAtt - scanning training for neglect enhanced by multi-sensory stimulation in Virtual Reality.

    Science.gov (United States)

    Fordell, Helena; Bodin, Kenneth; Eklund, Anders; Malm, Jan

    2016-06-01

    There is a lack of effective treatment for neglect. We have developed a new training method, RehAtt™. The objective of this study was to determine whether RehAtt™ improves spatial attention in chronic neglect after stroke. RehAtt™ consists of a computer with monitor, 3D glasses, and a force feedback interface (Robotic pen) giving sensory motor activation to the contra-lesional arm. The software combines visual scanning training with multi-sensory stimulation in 3D virtual reality (VR) game environment. Fifteen stroke patients with chronic neglect (duration > 6 month) had repeated baseline evaluations to confirm stability of symptoms. There were no test-retest effects for any of the tests. Thereafter, all patients trained 15 h in RehAtt™ (3 × 1 h for 5 weeks). A neglect test battery and Catherine Bergego Scale, CBS, were used to assess behavioral outcome after intervention. CBS was also used at a 6-month follow-up. Using repeated measurement analysis improvements due to the training were found for Star cancellation test (p = 0.006), Baking tray task (p VR-method improved spatial attention and showed transfer to improved spatial attention in activities of daily living in chronic neglect. Our results are promising and merit further studies.

  17. International Instructional Systems: Social Studies

    Science.gov (United States)

    Brant, Jacek; Chapman, Arthur; Isaacs, Tina

    2016-01-01

    This paper reports on research conducted as part of the International Instructional System Study that explored five subject areas across nine jurisdictions in six high-performing countries. The Study's overall aim was to understand what, if anything, there is in common in the curricula and assessment arrangements among the high-performing…

  18. NASA Electric Propulsion System Studies

    Science.gov (United States)

    Felder, James L.

    2015-01-01

    An overview of NASA efforts in the area of hybrid electric and turboelectric propulsion in large transport. This overview includes a list of reasons why we are looking at transmitting some or all of the propulsive power for the aircraft electrically, a list of the different types of hybrid-turbo electric propulsion systems, and the results of 4 aircraft studies that examined different types of hybrid-turbo electric propulsion systems.

  19. Viljan att aktivera

    Directory of Open Access Journals (Sweden)

    Magnus Dahlstedt

    2006-01-01

    Full Text Available THE WILL TO ACTIVATE. MOBILIZING THE SUBURB AS A POLITICAL TECHNOLOGY.During the 1990s, the ideal of ”mobilization from below” and building”partnerships” between public and private actors, political institutions,local communities and NGOs became a salient feature of Swedish debateon multi-ethnic suburbs. In this article, the discourse of ”active citizen-ship” is analysed in three different policy areas: democracy, urban andeducational policy. The theoretical point of departure is the work of MichelFoucault and his theories of power and political technology. Following theframework established by Foucault, the aim of ”mobilizing the suburb”which dominates contemporary debate about multi-ethnic suburbs is an-alysed in terms of particular ”technologies of government” that createcitizens as ”active” and ”responsible” subjects. In the move towards ”ac-tive citizenship”, it is argued, a neo-liberal agenda has gained momentumin Swedish politics, further emphasizing the role of individual responsibil-ities and initiatives as opposed to public arrangements and interventions.

  20. Basic science of host immunity in osteoarticular tuberculosis - A clinical study

    Directory of Open Access Journals (Sweden)

    Arora Anil

    2006-01-01

    Full Text Available Background : Osteoarticular tuberculosis is coming back with vengeance. Host immunity plays a major role in either containing the disease or allowing the spread. Number of resistant cases and drug defaulters are on the rise. Immunepotentiation (immunomodulation has shown beneficial response in pulmonary tuberculosis in various studies. Methods : This study was done to assess immune status of various categories of patients of osteoarticular tuberculosis, to modulate (alter or change the immune system in non responder patients and to add immunomodulation therapy in some patients from the very beginning of antitubercular chemotherapy and observe their clinical response and objectively assess their immune status. Prospective study was done in two phases involving 103 patients suffering from osteoarticular tuberculosis. In phase one 61 patients (Two Groups - Group 1 called fresh virgin/responder cases given first line antitubercular drugs (ATT = 41 patients; Group 2 called Non responders immunomodulated with cycles of oral levamisole, BCG and DPT vaccine as an adjuvant to ATT = 20 patients assessed for their cellular immune profile. In second phase 42 patients (In three Groups - Group 3A who received only ATT = 15 patients; Group 3B who received ATT and immunomodulation from very beginning = 15 patients; Group 4 who were non responders, put on immunomodulation after minimum three months of ATT =12 patients were assessed for their interleukin profiles at presentation and after three months of therapy in respective groups. The immune parameters of all above mentioned patients (n=103 were correlated with the type of clinical presentation, course of disease, response to therapy and response to immunomodulation. Follow up in all the groups ranges from 24 - 49 months (mean 27.2 months. Results : Group1 (n=41: Thirty nine out of 41 patients showed clinicoradiological response at three months of therapy. The CD4 cell counts in these patients rose to a

  1. L'irrigation avec des eaux usées et la santé : Évaluer et atténuer les ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    18 déc. 2009 ... L'irrigation avec des eaux usées et la santé : Évaluer et atténuer les risques dans les pays. Couverture du livre L'irrigation avec des eaux usées et la santé : Évaluer et. Directeur(s):. Pay Drechsel, Christopher A. Scott, Liqa Raschid-Sally, Mark Redwood et Akiça Bahri. Maison(s) d'édition: Presses de ...

  2. Advanced nuclear systems. Review study

    International Nuclear Information System (INIS)

    Liebert, Wolfgang; Glaser, Alexander; Pistner, Christoph; Baehr, Roland; Hahn, Lothar

    1999-04-01

    The task of this review study is to from provide an overview of the developments in the field of the various advanced nuclear systems, and to create the basis for more comprehensive studies of technology assessment. In an overview the concepts for advanced nuclear systems pursued worldwide are subdivided into eight subgroups. A coarse examination raster (set pattern) is developed to enable a detailed examination of the selected systems. In addition to a focus on enhanced safety features, further aspects are also taken into consideration, like the lowering of the proliferation risk, the enhancement of the economic competitiveness of the facilities and new usage possibilities (for instance concerning the relaxation of the waste disposal problem or the usage of alternative fuels to uranium). The question about the expected time span for realization and the discussion about the obstacles on the way to a commercially usable reactor also play a substantial role as well as disposal requirements as far as they can be presently recognized. In the central chapter of this study, the documentation of the representatively selected concepts is evaluated as well as existing technology assessment studies and expert opinions. In a few cases where this appears to be necessary, according technical literature, further policy advisory reports, expert statements as well as other relevant sources are taken into account. Contradictions, different assessments and dissents in the literature as well as a few unsettled questions are thus indicated. The potential of advanced nuclear systems with respect to economical and societal as well as environmental objectives cannot exclusively be measured by the corresponding intrinsic or in comparison remarkable technical improvements. The acceptability of novel or improved systems in nuclear technology will have to be judged by their convincing solutions for the crucial questions of safety, nuclear waste and risk of proliferation of nuclear weapons

  3. System Integration Testing ofAdvanced Driver Assistance Systems

    OpenAIRE

    Cioran, Anders

    2015-01-01

    En viktig faktor for att fortsatta forbattra traksakerheten ar genom att utveckla ochimplementera avancerade forarstodsfunktioner (ADAS) i fordon. Gemensamma aspekterhos de undersokta ADAS ar deras formagor att detektera och undvika farliga traksituationergenom att nyttja sensordata och fordonstillstand for att kontrollera fordonetsforyttning. Nya testmetoder maste overvagas eftersom nyutvecklade ADAS ar mer komplexaoch sakerhetskritiska. Detta arbete undersoker hur man kan testa nya ADAS fra...

  4. Integrated nonthermal treatment system study

    International Nuclear Information System (INIS)

    Biagi, C.; Bahar, D.; Teheranian, B.; Vetromile, J.; Quapp, W.J.; Bechtold, T.; Brown, B.; Schwinkendorf, W.; Swartz, G.

    1997-01-01

    This report presents the results of a study of nonthermal treatment technologies. The study consisted of a systematic assessment of five nonthermal treatment alternatives. The treatment alternatives consist of widely varying technologies for safely destroying the hazardous organic components, reducing the volume, and preparing for final disposal of the contact-handled mixed low-level waste (MLLW) currently stored in the US Department of Energy complex. The alternatives considered were innovative nonthermal treatments for organic liquids and sludges, process residue, soil and debris. Vacuum desorption or various washing approaches are considered for treatment of soil, residue and debris. Organic destruction methods include mediated electrochemical oxidation, catalytic wet oxidation, and acid digestion. Other methods studied included stabilization technologies and mercury separation of treatment residues. This study is a companion to the integrated thermal treatment study which examined 19 alternatives for thermal treatment of MLLW waste. The quantities and physical and chemical compositions of the input waste are based on the inventory database developed by the US Department of Energy. The Integrated Nonthermal Treatment Systems (INTS) systems were evaluated using the same waste input (2,927 pounds per hour) as the Integrated Thermal Treatment Systems (ITTS). 48 refs., 68 figs., 37 tabs

  5. Integrated nonthermal treatment system study

    Energy Technology Data Exchange (ETDEWEB)

    Biagi, C.; Bahar, D.; Teheranian, B.; Vetromile, J. [Morrison Knudsen Corp. (United States); Quapp, W.J. [Nuclear Metals (United States); Bechtold, T.; Brown, B.; Schwinkendorf, W. [Lockheed Martin Idaho Technologies Co., Idaho Falls, ID (United States); Swartz, G. [Swartz and Associates (United States)

    1997-01-01

    This report presents the results of a study of nonthermal treatment technologies. The study consisted of a systematic assessment of five nonthermal treatment alternatives. The treatment alternatives consist of widely varying technologies for safely destroying the hazardous organic components, reducing the volume, and preparing for final disposal of the contact-handled mixed low-level waste (MLLW) currently stored in the US Department of Energy complex. The alternatives considered were innovative nonthermal treatments for organic liquids and sludges, process residue, soil and debris. Vacuum desorption or various washing approaches are considered for treatment of soil, residue and debris. Organic destruction methods include mediated electrochemical oxidation, catalytic wet oxidation, and acid digestion. Other methods studied included stabilization technologies and mercury separation of treatment residues. This study is a companion to the integrated thermal treatment study which examined 19 alternatives for thermal treatment of MLLW waste. The quantities and physical and chemical compositions of the input waste are based on the inventory database developed by the US Department of Energy. The Integrated Nonthermal Treatment Systems (INTS) systems were evaluated using the same waste input (2,927 pounds per hour) as the Integrated Thermal Treatment Systems (ITTS). 48 refs., 68 figs., 37 tabs.

  6. Auxiliary feedwater system aging study

    International Nuclear Information System (INIS)

    Kueck, J.D.

    1993-07-01

    This report documents the results of a Phase I follow-on study of the Auxiliary Feedwater (AFW) System that has been conducted for the US Regulatory Commission's Nuclear Plant Aging research Program. The Phase I study found a number of significant AFW System functions that are not being adequately tested by conventional test methods and some that are actually being degraded by conventional testing. Thus, it was decided that this follow-on study would focus on these testing omissions nd equipment degradation. The deficiencies in current monitoring and operating practice are categorized and evaluated. Areas of component degradation caused by current practice are discussed. Recommendations are made for improved diagnostic methods and test procedures

  7. Development of the gateway recycling cloning system for multiple linking of expression cassettes in a defined order, and direction on gateway compatible binary vectors.

    Science.gov (United States)

    Kimura, Tetsuya; Nakao, Akihide; Murata, Sachiko; Kobayashi, Yasuyuki; Tanaka, Yuji; Shibahara, Kenta; Kawazu, Tetsu; Nakagawa, Tsuyoshi

    2013-01-01

    We developed the Gateway recycling cloning system, which allows multiple linking of expression cassettes by multiple rounds of the Gateway LR reaction. Employing this system, the recycling donor vector pRED419 was subjected to the first LR reaction with an attR1-attR2 type destination vector. Then conversion vector pCON was subjected to an LR reaction to restore the attR1-attR2 site on the destination vector for the next cloning cycle. By repetition of these two simple steps, we linked four expression cassettes of a reporter gene in Gateway binary vector pGWB1, introduced the constructs into tobacco BY-2 cells, and observed the expression of transgenes.

  8. För vilka finns kroppspositivismen? : En diskursanalytisk och semiotisk studie av hur kroppsaktivister på Instagram artikulerar kroppspositivism

    OpenAIRE

    Wallén, Camilla

    2017-01-01

    Denna studie har genomförts med syfte att undersöka hur kroppsaktivister artikulerar kropp och kroppspositivitet genom bilder och texter på deras Instagramkonton. Studien syftar även till att undersöka om, och i så fall hur, artikulationerna av kroppspositivitet skiljer sig mellan olika kroppsaktivister. Slutligen syftar studien till att studera hur kroppsaktivisterna artikulerar syftet med rörelsen. Det teoretiska ramverket består av tidigare forskning och etablerade teorier i postmodern fem...

  9. Tūrisma kompānijas SIA „Baltic Events & Travel” attīstības stratēģija

    OpenAIRE

    Upelniece, Ilze

    2007-01-01

    Ilze Upelniece. Maģistra darbs „Tūrisma kompānijas SIA “Baltic Events & travel” attīstības stratēģija”. – Rīga: 2007. Maģistra darba mērķis: pamatojoties uz stratēģiskās vadīšanas teorētisko aspektu, Latvijas tūrisma nozares un kompānijas iespēju izpētes rezultātiem, izstrādāt tūrisma kompānijas SIA “Baltic Events & travel” attīstības stratēģiju. Mērķa sasniegšanai definētie darba uzdevumi: 1)izpētīt stratēģiskās vadības teorētisko bāzi, izvēlēties stratēģijas skolu, pēc kuras ietei...

  10. Ekotūrisma attīstīšanas potenciāls Zebrus-Īles mežu masīvā

    OpenAIRE

    Bērziņa, Anete

    2014-01-01

    Maģistra darbs „Ekotūrisma attīstīšanas potenciāls Zebrus-Īles mežu masīvā” izstrādāts ar mērķi novērtēt Zebrus-Īles mežu masīva piemērotību ekotūrisma specializācijai. Pētījuma būtība ir novērtēt, vai pētījuma teritorijai ir potenciāls attīstīt ekotūrismu, ņemot vērā tās ekotūrisma resursus un vietējo iedzīvotāju attieksmi. Galvenie rezultāti norāda uz vides gida lielo nozīmi ekotūrisma organizēšanā un nepieciešamajām zināšanām par vietu un prasmi to nodot citiem. Kopumā iedzīvotāji atbalsta...

  11. B2B elektroniskās komercijas potenciāls un attīstības perspektīvas Latvijā

    OpenAIRE

    Ķigule, Monta

    2012-01-01

    Bakalaura darbs „B2B elektroniskās komercijas potenciāls un attīstības perspektīvas Latvijā” mērķis ir sniegt lasītājiem priekšstatu par e-komerciju priekšrocībām uzņēmējdarbībā, un kāds ir uzņēmumu skatījums uz B2B attīstību Latvijas un uzņēmuma ietvaros. Darbs sastāv no trim galvenajām daļām. Pirmajā daļā tiek aplūkots B2B kā e-komercijas forma.. Darba otrajā daļā mēs apskatījām B2B modeļus, un tiem piemītošās īpašības un raksturu. Trešās daļas ietvaros tika apskatīti pieejamies statisti...

  12. Informācijpratības un sadarbības prasmes attīstīšana ar WebQuest mācību modeli

    OpenAIRE

    Gulbis, Mārtiņš

    2011-01-01

    Informācijpratības un sadarbības prasmes attīstīšana ar WebQuest mācību modeli. Gulbis M., zinātniskais vadītājs Dr.chem.,. docents Logins J., kvalifikācijas darbs, 41 lappuses, 6 attēli, 7 tabulas, 2 pielikumi, 25 literatūras avoti. Latviešu valodā. WEBQUEST, PROJEKTA APRAKSTS, DARBA UZDEVUMI, SPIRTI, FENOLI, INFORMĀCIJPRATĪBA, SADARBĪBAS PRASMES. Darbā veikta literatūras izpēte par WebQuest mācību modeļa izmantošanu ķīmijas mācību procesā, lai attīstītu skolēnu informācijpratību un sa...

  13. L'atténuation intrinsèque des ondes sismiques. Première partie : Définitions et mesures Intrinsic Attenuation of Seismic Waves. Part 1: Definitions and Measurements

    Directory of Open Access Journals (Sweden)

    Bourbié T.

    2006-11-01

    Full Text Available La notion d'atténuation acoustique est séparée en deux types, à savoir l'atténuation intrinsèque, liée au milieu poreux et à ses fluides saturants et l'atténuation extrinsèque liée à la géométrie du milieu poreux. La seule notion d'atténuation intrinsèque est examinée en détail sous le terme générique d'atténuation. II est montré que l'ensemble des définitions envisagées sont équivalentes dans le cas de faibles ou moyennes atténuations. Les trois paramètres les plus utilisés pour caractériser l'anélasticité d'un milieu donné sont le facteur de qualité Q, le coefficient d'atténuation alpha et le décrément logarithmiquedelta. De nombreuses méthodes existent pour mesurer pratiquement cette atténuation. Deux grandes familles peuvent être distinguées, à savoir les méthodes utilisant des systèmes vibrants ou cycliques et les méthodes utilisant des propagations d'ondes. Chacune de ces familles est étudiée en détail en insistant particulièrement sur le domaine fréquentiel d'application et la possibilité d'utilisation sur le terrain. The concept of acoustical attenuation is separated into two types, i. e. intrinsic attention linked to the porous medium and its saturating fluids, and extrinsic attention linked to the geometry of the porous media. The concept of intrinsic attention atone is examined in detail under the broader term of attenuation: All the definitions considered are shown to be equivalent for low or medium attenuations. The three most frequently used parameters for characterizing the anelasticity of a given medium are the quality factor Q, the attenuation coefficient alpha, and the logarithmic decrement delta.

  14. Studies of Catalytic Model Systems

    DEFF Research Database (Denmark)

    Holse, Christian

    of the Cu/ZnO nanoparticles is highly relevant to industrial methanol synthesis for which the direct interaction of Cu and ZnO nanocrystals synergistically boost the catalytic activity. The dynamical behavior of the nanoparticles under reducing and oxidizing environments were studied by means of ex situ X...... as the nanoparticles are reduced. The Cu/ZnO nanoparticles are tested on a  µ-reactor platform and prove to be active towards methanol synthesis, making it an excellent model system for further investigations into activity depended morphology changes....

  15. ”Varken E=mc2 eller Det förlorade paradiset rafsades ihop av en festprisse” : En kvalitativ studie om introvert beteende i skolan

    OpenAIRE

    Larsson, Sofie; Nordqvist, Micaela

    2015-01-01

    Denna studie syftar till att lyfta fram begreppet introvert i skolvärlden genom att undersöka hur introverta beteenden kan påverka elevers utbildning. Vi lyfter även fram lärares tillskrivande av introvert beteende. Vi utgår ifrån Jung och H.J. Eysencks definitioner av begreppet introvert samt tar upp olika beteendeteorier och perspektiv på introvert beteende för att kunna identifiera och analysera våra resultat. Studiens metod är en empirisk datainsamling i form av observationer och intervju...

  16. Hydrogen energy systems technology study

    Science.gov (United States)

    Kelley, J. H.

    1975-01-01

    The paper discusses the objectives of a hydrogen energy systems technology study directed toward determining future demand for hydrogen based on current trends and anticipated new uses and identifying the critical research and technology advancements required to meet this need with allowance for raw material limitations, economics, and environmental effects. Attention is focused on historic production and use of hydrogen, scenarios used as a basis for projections, projections of energy sources and uses, supply options, and technology requirements and needs. The study found more than a billion dollar annual usage of hydrogen, dominated by chemical-industry needs, supplied mostly from natural gas and petroleum feedstocks. Evaluation of the progress in developing nuclear fusion and solar energy sources relative to hydrogen production will be necessary to direct the pace and character of research and technology work in the advanced water-splitting areas.

  17. NEXT GENERATION TURBINE SYSTEM STUDY

    Energy Technology Data Exchange (ETDEWEB)

    Frank Macri

    2002-02-28

    Rolls-Royce has completed a preliminary design and marketing study under a Department of Energy (DOE) cost shared contract (DE-AC26-00NT40852) to analyze the feasibility of developing a clean, high efficiency, and flexible Next Generation Turbine (NGT) system to meet the power generation market needs of the year 2007 and beyond. Rolls-Royce evaluated the full range of its most advanced commercial aerospace and aeroderivative engines alongside the special technologies necessary to achieve the aggressive efficiency, performance, emissions, economic, and flexibility targets desired by the DOE. Heavy emphasis was placed on evaluating the technical risks and the economic viability of various concept and technology options available. This was necessary to ensure the resulting advanced NGT system would provide extensive public benefits and significant customer benefits without introducing unacceptable levels of technical and operational risk that would impair the market acceptance of the resulting product. Two advanced cycle configurations were identified as offering significant advantages over current combined cycle products available in the market. In addition, balance of plant (BOP) technologies, as well as capabilities to improve the reliability, availability, and maintainability (RAM) of industrial gas turbine engines, have been identified. A customer focused survey and economic analysis of a proposed Rolls-Royce NGT product configuration was also accomplished as a part of this research study. The proposed Rolls-Royce NGT solution could offer customers clean, flexible power generation systems with very high efficiencies, similar to combined cycle plants, but at a much lower specific cost, similar to those of simple cycle plants.

  18. Volontärturism : -En studie om volontärers engagemang i Kenya

    OpenAIRE

    Myhr, Sophie; Beäff, Linda

    2014-01-01

    Denna uppsats uppmärksammar fenomenet volontärturism som anses vara mer utav en välgörande form av resa, där volontärer anmäler sig frivilligt att arbeta ideellt med olika projekt runt om i världen, en turismform som är ömsesidigt fördelaktig för båda parter. Volontärer reser själva eller med en organisation till olika länder för att erbjuda sin tid och hjälp i olika projekt, bland annat för att få erfarenhet och en upplevelse i retur. Syftet med denna studie är att begreppsliggöra vad volont...

  19. Millennials : Hur företag ska arbeta med styrning för att behålla den nya generationen

    OpenAIRE

    Lemchen, Gabriella; Gjärdman, Alexander

    2017-01-01

    Generationen millennials ses av många ledare som lata, krävande men även illojala. Vilket har gjort det svårt för många företag att leda, styra samt förankra dem. Anledningen grundar sig mångt och mycket i en generationskrock där ledare ur de äldre generationerna inte vet hur de ska styra den yngre generationen. Millennials är framstående inom kunskapsintensiva tjänsteföretag idag och är även den generation som byter arbetsgivare mer frekvent än tidigare generationer. Det är därför vitalt för...

  20. A STUDY ON ADVERSE DRUG REACTIONS INVOLVING CENTRAL NERVOUS SYSTEM, ITS SEVERITY AND CAUSALITY ASSESSMENT IN PEDIATRIC PATIENTS ADMITTED TO A TERTIARY CARE HOSPITAL

    Directory of Open Access Journals (Sweden)

    Arati

    2015-09-01

    Full Text Available A retrospective study was conducted in Department of pediatrics SCB Medical College and SVPPGIP for a period of 2 years i.e. September 2012 to August 2014 . All the patients from birth to 14 years admitted to the pediatric ward in this study were under ADR surveillance. Patients admitted to our hospital with adverse drug reaction o r patients developing adverse drug reaction in our hospital were studied; only those cases where the central nervous system was involved were taken in our study. The cases were compiled and the causality of offending drugs was found using WHO - UMC causality assessment score. The severity of drug reaction in every case was determined by using HARTWIG’s severity scoring scale. Total 350 Adverse reactions were reported in this period with prevalence rate of 2.04% i.e. 20 out of 1000 children faced ADR due to dr ugs, with annual incidence rate of 0.9% and 1.14% over two years. Out of total 350 cases dermatological system was most commonly involved i.e. 207 cases (59.14%. This is followed by involvement of central nervous system 46 number of cases (13.14%. The GI system was involved in 34 cases i.e. (9.71%. Life threatening reactions like anaphylaxis, angioedema and shock like immediate life threatening ADRs were reported in 16 cases. Our study group was the patient in whom the ADR involved the CNS. Out of 46 suc h cases, there were 25 female and 21 male. Various reaction due to drug were encephalopathy , eps, febrile seizure, tremor, head reeling, ototoxicity, persistant cry, pseudotumor cerebri, psychosis, seizure, status epilepticus, toxic amblyopia, tremor, atax ia etc. The most common CNS manifestation was Extra pyramidal side effects (EPS involving 21% of cases. The most common Drug causing CNS manifestation was ATT (HRZE causing blindness, Eps, psychosis , toxic amblyopia blindness etc.

  1. THE COLLABORATIVE OCULAR TUBERCULOSIS STUDY (COTS)-1: A Multinational Review of 251 Patients With Tubercular Retinal Vasculitis.

    Science.gov (United States)

    Gunasekeran, Dinesh V; Agrawal, Rupesh; Agarwal, Aniruddha; Carreño, Ester; Raje, Dhananjay; Aggarwal, Kanika; Kon, Onn M; Nguyen, Quan Dong; Pavesio, Carlos; Gupta, Vishali

    2018-04-24

    Tubercular retinal vasculitis (TRV) is a heterogeneous disease that can be difficult to manage because of nonspecific presentation and limitations of confirmatory tests for tuberculosis. This is a big data analysis on phenotypes and treatment outcomes for TRV. Multicentre retrospective study of patients with TRV between January 2004 and December 2014 and a minimum follow-up of 1 year. Two hundred and fifty-one patients with TRV with a mean age of 38.9 ± 14.4 years (range, 9-86 years) were included. The patients were predominantly males (n = 167/251; 66.5%) of Asian ethnicity (n = 174/246; 70.7%), and geographical origin (n = 137/251; 54.6%). Most patients had features of occlusive type of RV (n = 113/185; 61.1%) except Caucasians (n = 11; 28.2%). There was no significant difference in treatment failure whether patients received antitubercular therapy (ATT) (P = 0.29), although treatment failure was less frequent in patients who received ATT (13.6%; n = 31/228) compared with those who did not (21.7%, n = 5/23). Less treatment failures were observed in patients with occlusive type RV who received ATT; however, this was not significant on survival analysis (P = 0.09). Treatment with ATT was associated with higher failure rates in patients of Hispanic and African American race and those with TRV associated with panuveitis (compared with posterior uveitis). In this multinational study of TRV, there was no significant therapeutic effect of ATT. However, a definitive conclusion about the role of ATT could not be made because of a few patients who did not receive ATT. Because this is a retrospective study with a limited 1-year follow-up, the effect of ATT may have been overestimated (or underestimated) in the duration of follow-up.

  2. On the Usability of Spoken Dialogue Systems

    DEFF Research Database (Denmark)

    Larsen, Lars Bo

     This work is centred on the methods and problems associated with defining and measuring the usability of Spoken Dialogue Systems (SDS). The starting point is the fact that speech based interfaces has several times during the last 20 years fallen short of the high expectations and predictions held...... by industry, researchers and analysts. Several studies in the literature of SDS indicate that this can be ascribed to a lack of attention from the speech technology community towards the usability of such systems. The experimental results presented in this work are based on a field trial with the OVID home...... model roughly explains 50% of the observed variance in the user satisfaction based on measures of task success and speech recognition accuracy, a result similar to those obtained at AT&T. The applied methods are discussed and evaluated critically....

  3. Breast Health Belief Systems Study

    National Research Council Canada - National Science Library

    Williams, Mary

    1999-01-01

    .... The hypothesis underlying this research is that a breast health promotion approach that is based in specific belief systems among three disparate African American rural populations of low socioeconomic status (SES...

  4. Advanced turbine systems study system scoping and feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    1993-04-01

    United Technologies Research Center, Pratt Whitney Commercial Engine Business, And Pratt Whitney Government Engine and Space Propulsion has performed a preliminary analysis of an Advanced Turbine System (ATS) under Contract DE-AC21-92MC29247 with the Morgantown Energy Technology Center. The natural gas-fired reference system identified by the UTC team is the Humid Air Turbine (HAT) Cycle in which the gas turbine exhaust heat and heat rejected from the intercooler is used in a saturator to humidify the high pressure compressor discharge air. This results in a significant increase in flow through the turbine at no increase in compressor power. Using technology based on the PW FT4000, the industrial engine derivative of the PW4000, currently under development by PW, the system would have an output of approximately 209 MW and an efficiency of 55.3%. Through use of advanced cooling and materials technologies similar to those currently in the newest generation military aircraft engines, a growth version of this engine could attain approximately 295 MW output at an efficiency of 61.5%. There is the potential for even higher performance in the future as technology from aerospace R D programs is adapted to aero-derivative industrial engines.

  5. Market study: Tactile paging system

    Science.gov (United States)

    1977-01-01

    A market survey was conducted regarding the commercialization potential and key market factors relevant to a tactile paging system for deaf-blind people. The purpose of the tactile paging system is to communicate to the deaf-blind people in an institutional environment. The system consists of a main console and individual satellite wrist units. The console emits three signals by telemetry to the wrist com (receiving unit) which will measure approximately 2 x 4 x 3/4 inches and will be fastened to the wrist by a strap. The three vibration signals are fire alarm, time period indication, and a third signal which will alert the wearer of the wrist com to the fact that the pin on the top of the wrist is emitting a morse coded message. The Morse code message can be felt and recognized with the finger.

  6. Qualitative Studies in Information Systems

    DEFF Research Database (Denmark)

    Sarker, Suprateek; Xiao, Xiao; Beaulieu, Tanya

    2013-01-01

    The authors discuss a review of qualitative papers on information systems (IS) published in various journals between 2001 and 2012. They explain trends related to qualitative research in the chosen journals and the key anatomical components of a qualitative research manuscript, including...

  7. Att lära sig se trådraken – om tvekan och fokusförskjutning på väg mot förändrat kunnande

    Directory of Open Access Journals (Sweden)

    Marléne Johansson

    2017-05-01

    Full Text Available Utgångspunkten i denna artikel är empiriskt förankrade exempel från textilslöjdspraktiker i den svenska skolan; grundskolans slöjdundervisning årskurs 8 och ett specialutformat program inom gymnasieskolan med textil inriktning i årskurserna 1 och 3. Artikelns videoutdrag handlar alla om principiellt samma handling – trådrak mönsterutläggning på tyg – men, dels finns det två olika inramningar (grundskolan och gymnasieskolan, och dels exemplifierar de olika skeden av kunnande. Syftet är att beskriva skillnader i kunnande och vad som framstår som svårt för elever med liten eller ingen erfarenhet av att lägga ut mönster på ett tyg inför tillklippning och hur kunnandet förändras med ökande erfarenhet, liksom vilka nya svårigheter som följer med att elever arbetar med mönster av ökande komplexitet. Det som vid en första blick kan framstå som samma handling utvecklas över tid från något som framstår som enkel handling till att utvecklas i komplexitet. I de tvekan-situationer som beskriv finns potential för ett förändrat deltagande, där förändringen idealt är ett mer kompetent deltagande där ingen tvekan förekommer. Med ökad förtrogenhet kan uppmärksamheten förflyttas till något annat. Det vi är förtrogna med blir till rutiner och därmed behövs det en avvikelse för att fånga uppmärksamheten. I avvikelsen ligger möjligheterna till fortsatt lärande. Artikelns empiriska exempel synliggör dessa skillnader i kunnande som annars oreflekterat kan uppfattas som lika. Eleverna bygger in kunskap i sina handlingar, fokus flyttar från att inte veta vad man tittar på till självklarheten i handlingen. Eleverna lär sig se och urskilja.

  8. Multitarget Tracking Studies.

    Science.gov (United States)

    1981-07-01

    most of these studies wore r.acege to zontrol orrobl.es ivl c st3:-v r, arts winpoles and zeres well inside :?Le -.att circ.e. 0. too. Ig. ge iw...without changing the spectrum. .hus, as inuitively expected, the absolute delays Note that the framework described here can aso , cannot be

  9. Establishment of real time allele specific locked nucleic acid quantitative PCR for detection of HBV YIDD (ATT mutation and evaluation of its application.

    Directory of Open Access Journals (Sweden)

    Yongbin Zeng

    Full Text Available BACKGROUND: Long-term use of nucleos(tide analogues can increase risk of HBV drug-resistance mutations. The rtM204I (ATT coding for isoleucine is one of the most important resistance mutation sites. Establishing a simple, rapid, reliable and highly sensitive assay to detect the resistant mutants as early as possible is of great clinical significance. METHODS: Recombinant plasmids for HBV YMDD (tyrosine-methionine-aspartate-aspartate and YIDD (tyrosine-isoleucine-aspartate-aspartate were constructed by TA cloning. Real time allele specific locked nucleic acid quantitative PCR (RT-AS-LNA-qPCR with SYBR Green I was established by LNA-modified primers and evaluated with standard recombinant plasmids, clinical templates (the clinical wild type and mutant HBV DNA mixture and 102 serum samples from nucleos(tide analogues-experienced patients. The serum samples from a chronic hepatitis B (CHB patient firstly received LMV mono therapy and then switched to LMV + ADV combined therapy were also dynamically analyzed for 10 times. RESULTS: The linear range of the assay was between 1×10(9 copies/μl and 1 × 10(2 copies/μl. The low detection limit was 1 × 10(1 copies/μl. Sensitivity of the assay were 10(-6, 10(-4 and 10(-2 in the wild-type background of 1 × 10(9 copies/μl, 1 × 10(7 copies/μl and 1 × 10(5 copies/μl, respectively. The sensitivity of the assay in detection of clinical samples was 0.03%. The complete coincidence rate between RT-AS-LNA-qPCR and direct sequencing was 91.2% (93/102, partial coincidence rate was 8.8% (9/102, and no complete discordance was observed. The two assays showed a high concordance (Kappa = 0.676, P = 0.000. Minor variants can be detected 18 weeks earlier than the rebound of HBV DNA load and alanine aminotransferase level. CONCLUSIONS: A rapid, cost-effective, high sensitive, specific and reliable method of RT-AS-LNA-qPCR with SYBR Green I for early and absolute quantification of HBV YIDD (ATT coding for isoleucine

  10. Space shuttle food system study. Volume 1: System design report

    Science.gov (United States)

    1974-01-01

    Data were assembled which define the optimum food system to support the space shuttle program, and which provide sufficient engineering data to support necessary requests for proposals towards final development and installment of the system. The study approach used is outlined, along with technical data and sketches for each functional area. Logistic support analysis, system assurance, and recommendations and conclusions based on the study results are also presented.

  11. Kritiska händelser och radikala konsekvenser : En studie om hur kritiska händelser orsakat radikala förändringar i skivbolaget Sony Music Swedens nätverk

    OpenAIRE

    Sveder, Karl; Blomquist, Herman

    2012-01-01

    Nätverksansatsen har kritiserats av flertalet forskare inom den företagsekonomiska vetenskapen för att vara för statisk och brista i sin förmåga att förklara radikala förändringar i industriella nätverk. Ansatsen om kritiska händelser i industriella nätverk har vuxit fram som en förklaringsmodell till sådana radikala nätverksförändringar. Denna studie har som syfte att bidra till en ökad förståelse för radikala förändringar i industriella nätverk genom att diskutera vidare konceptet kritiska ...

  12. Prerequisites for an effective use of ashes in road construction; Foerutsaettningar foer att askor kommer till anvaendning i vaegar

    Energy Technology Data Exchange (ETDEWEB)

    Kaerrman, Erik; Moeffaert, Denis van [Scandiaconsult Sverige AB, Stockholm (Sweden); Bjurstroem, Henrik; Berg, Magnus [AaF Energi och Miljoe AB, Stockholm (Sweden); Svedberg, Bo [Luleaa Univ. of Technology (Sweden)

    2004-01-01

    The aim of this project was to compile how different EU-countries have overcome the obstacles for the use of ashes in road constructions and conclude what has to be done in Sweden. An assumption and starting point for the study is that the use of ashes is beneficial. The study is focused on other EU countries through interviews with relevant actors in Belgium, Netherlands, France, England, Finland and Denmark. The conditions in these countries vary. Netherlands and Denmark were pioneers and have today many years of experience of using ashes in road construction. At the time for this investigation there were however drawbacks - in Netherlands due to mismanagement of ashes in large road constructions and in Denmark because of the introduction of stricter regulations. Belgium and England are making efforts towards recycling of ashes although only small amounts have been used hitherto. In some regions of France, ashes are used to a vast degree, which is mainly due to a strong network of material suppliers marketing ashes together. In Finland, finally, a comprehensive program for research and development were undertaken during the 1990s. An output of this program was guidelines, which facilitate the use of ashes. Typical obstacles for the use of recycled materials in constructions in Sweden have in previous projects been identified as 1) ambiguous laws and regulations, 2) lack of experiences, 3) weak economical incentives, 4) material-related decisions are made too late in project planning and, 5) lack of methods for showing the benefits of recycling. The experiences from the studied countries confirm that points 1, 3 and partly 2 also are valid there. Lack of competence can only be reconciled by active marketing. Point 5 can be overcome by the use of environmental system analysis (ESA) in which both the road construction and alternative management (e.g. disposal) of ashes are included. This type of analyses has not been carried out in the studied countries (except a

  13. Paleoveģetācijas izmaiņu rekonstrukcija pēc makroatliekām Mazā Ungura ezera attīstības laikā

    OpenAIRE

    Staškova, Anda

    2012-01-01

    Staškova A. 2012. „Paleoveģetācijas izmaiņu rekonstrukcija pēc makroatliekām Mazā Ungura ezera attīstības laikā”. Bakalaura darbs. Rīga, Latvijas Universitāte, Ģeogrāfijas un Zemes zinātņu fakultāte, 56 lpp. Darba teorētiskā sadaļa ietver zinātniskās literatūras analīzi par ezeru klasifikāciju, paleovides pētījumiem, ezeru nogulumiem, kā arī ūdensaugu attīstībai nepieciešamajiem elementiem. Izstrādājot bakalaura darbu, autore iepazinās ar lauka darba metodēm, veica nogulumu zondēšanu u...

  14. Franšaizings kā starptautiskā biznesa iespēja un tā attīstība Latvijā.

    OpenAIRE

    Dolģe, Daiga

    2014-01-01

    Arvien biežāk uzņēmumi pielieto franšīzes metodi sava biznesa attīstīšanā, it īpaši, gadījumos, kad uzņēmums vēlas ar minimālu investīciju daudzumu apgūt jaunus tirgus. Savukārt pērkot franšīzi ir iespējams iegūt lielu potenciālo klientu skaitu ar jau pazīstama zīmola palīdzību un atbalstu no franšīzes devēja, kas ir īpaši izdevīgi mazāk pieredzējušiem uzņēmējiem. Baklaura darba mērķis ir sniegt vērtējumu franšīzei kā starptautiskai biznesa iespējai un izdarīt secinājumus un priekšlikumus...

  15. Viesnīcas "Hotel Vantis" darbības analīze un attīstības perspektīvas

    OpenAIRE

    Lāce, Sabīne

    2016-01-01

    Bakalaura darba ietvaros, autore, kura ir arī viesnīcas „Hotel Vantis” darbiniece, bija ieinteresēta izpētīt viesnīcas darbību un piedāvāt risinājumus „Hotel Vantis” darbības uzlabošanai. Lai labāk izprastu vai viesnīcas darbība ir veiksmīga vai nē, bija nepieciešams izpētīt arī Latvijas tūrisma nozari kopumā un statistiku par laika periodu 2012.-2014.gadam. Darba gaita izskatīti tūrisma nozares attīstības un kvalitātes noteikšanas institūciju - Latvijas viesnīcu un restorānu aģentūras, Tūris...

  16. Afrocentrisma rašanās un attīstība ASV: amerikāņu autoru skatījumā

    OpenAIRE

    Saulītis, Roberts

    2015-01-01

    Afrocentrisma aizsākumi ASV historiogrāfijā ir saistīti ar melnādaino sociāli politisko un ekonomisko situāciju Dienvidu štatos un cīņu par līdztiesību 20. gs. vidū, uzplaukstot melnādaino nacionālismam. Maģistra darbs Afrocentrisma rašanās un attīstība ASV: amerikāņu autoru skatījumā analizē ASV vēstures zinātnē radītos afrocentriskos pētījumus par afroamerikāņu vēstures sasniegumiem, afrikāņu kultūrām un pan-afrikānisma pārmantotajām idejām, un secina, ka afrocentrismam kā alternatīvam pasa...

  17. Environmental management systems:policy implementation and environmental effects

    OpenAIRE

    Zobel, Thomas

    2005-01-01

    Organisationers miljöarbete drivs mindre och mindre av lagkrav och mer och mer av deras övergripande strategi. För att kunna vinna marknadsfördelar, systematiskt uppfylla lagkrav och utveckla mer effektiva processer, väljer ett ökande antal organisationer att införa miljöledningssystem (MLS). Ända sedan introduktionen av miljöledningsstandarden ISO 14001 har studier utförts för att utvärdera effekterna av MLS. Med hjälp av en meta-studie har existerande data gällande miljöeffekter av MLS utvä...

  18. Study of the cardiovascular system

    International Nuclear Information System (INIS)

    Rocha, A.F.G. da

    1976-01-01

    A short revision of the stochastic models applied to circulation dynamics is done. The radiocardiographic technique is discussed and orientation is given about the most used radionuclides in this study, such as: Barium 137, Iodine 131, Krypton 85, etc. The radiographic curve is minutely analysed. In the clinical apllication of the method a qualitative and a quantitative analysis are made. In the former case, the alterations on that curve caused by pathological states are discussed, in the latter one, the cardiac output is evaluated. The technique of shunt detection which uses Krypton 85 as a tracer is analysed, and an arterial index of Krypton 85 is estimated, that permits to evaluate the size of the shunt. Other topics are studied, such as: coronary circulation, with the measurement of the blood flow of myocardium; the determination of the blood circulation time; isotopic angiography; the peripheral circulation, with its applications on the determination of blood flow at capillary level and capillary permeability; cardiac scintigraphy, with the most used radioisotopes in it and finally, the placentography. The clinical applications of each method are given [pt

  19. Heightened systemic levels of neutrophil and eosinophil granular proteins in pulmonary tuberculosis and reversal following treatment.

    Science.gov (United States)

    Moideen, Kadar; Kumar, Nathella Pavan; Nair, Dina; Banurekha, Vaithilingam V; Bethunaickan, Ramalingam; Babu, Subash

    2018-04-09

    Granulocytes are activated during tuberculosis (TB) infection and act as immune effector cells and granulocyte responses are implicated in TB pathogenesis. Plasma levels of neutrophil and eosinophil granular proteins provide an indirect measure of degranulation. In this study, we wanted to examine the levels of neutrophil and eosinophil granular proteins in individuals with pulmonary tuberculosis (PTB) and to compare them with the levels in latent TB (LTB) individuals. Hence, we measured the plasma levels of myeloperoxidase (MPO), neutrophil elastase, and proteinase-3; major basic protein (MBP), eosinophil derived neurotoxin (EDN), eosinophil cationic protein (ECP) and eosinophil peroxidase (EPX) in these individuals. Finally, we also measured the levels of all of these parameters in PTB individuals following anti-tuberculosis (ATT) treatment. Our data reveal that PTB individuals are characterized by significantly higher plasma levels of MPO, elastase, human proteinase 3 as well as MBP and EDN in comparison to LTB individuals. Our data also reveal that ATT resulted in reversal of all of these changes, indicating an association with TB disease. Finally, our data show that the systemic levels of MPO and proteinase-3 can significantly discriminate PTB from LTB individuals. Thus, our data suggest that neutrophil and eosinophil granular proteins could play a potential role in the innate immune response and therefore, the pathogenesis of pulmonary TB. Copyright © 2018 American Society for Microbiology.

  20. Nozīmīgākie riska faktori vēnu varikozes attīstībai operējošā personāla vidū

    OpenAIRE

    Kvasova, Inguna

    2014-01-01

    Bakalaura darba tēmas „Nozīmīgākie riska faktori vēnu varikozes attīstībai operējošā personāla vidū” aktualitāti nosaka fakts, ka vēnu varikoze ir plaši izplatīta problēma gan ārstniecības personāla vidū, gan sabiedrībā kopumā. Darba mērķis: noskaidrot riska faktorus vēnu varikozes attīstībai operējošā personāla vidū. Izvirzīta hipotēze: nozīmīgākie riska faktori vēnu varikozes attīstībai operējošā personāla vidū ir piespiedu darba poza un fiziskā slodze, kas apstiprinājās pētījumā. ...

  1. YouTube izmantošana vācu valodas kā svešvalodas stundās rakstītprasmes attīstīšanai pamatskolā

    OpenAIRE

    Krūma, Līga

    2014-01-01

    Diplomdarba tēma ir „YouTube izmantošana vācu valodas kā svešvalodas stundās rakstītprasmes attīstīšanai pamatskolā. Diplomdarba tēmas izvēli noteica fakts, ka Latvijā nav daudz pētījumu par YouTube, un ka šī video interneta mājaslapa, var piedāvāt jauninājumus vācu valodas kā svešvalodas stundās rakstītprasmes attīstīšanai. Darba teorētiskā daļa veido pedagoģiskās un metodiskās literatūras analīze. Teorētiskās pētniecības darba gaitā tika izstrādāti un izmēģināti rakstītprasmes attīsto...

  2. Fabulu krājuma „Kalīla un Dimna” loma arābu agrīnās viduslaiku literatūras attīstībā

    OpenAIRE

    Krohina, Anna

    2011-01-01

    Bakalaura darbā ”Fabulu krājuma „Kalīla un Dimna” loma arābu agrīnās viduslaiku literatūras attīstībā”, autors analizēja arābu literatūras attīstību no tās pirmsākumiem līdz Abāsīdu laikmetam un noskaidroja, kā arābu tulkošanas darbības ietekmēja arābu literatūras uzplaukumu 8.gs. Autors uzsvēra, ka fabulu krājums „Kalīla un Dimna” kalpoja par sava veida pagrieziena punktu arābu viduslaiku literatūras attīstības vēsturē, un spēlēja lielu lomu jaunās arābu prozas tradīcijas veidošanās islāma p...

  3. Communication Systems and Study Method for Active Distribution Power systems

    DEFF Research Database (Denmark)

    Wei, Mu; Chen, Zhe

    Due to the involvement and evolvement of communication technologies in contemporary power systems, the applications of modern communication technologies in distribution power system are becoming increasingly important. In this paper, the International Organization for Standardization (ISO......) reference seven-layer model of communication systems, and the main communication technologies and protocols on each corresponding layer are introduced. Some newly developed communication techniques, like Ethernet, are discussed with reference to the possible applications in distributed power system....... The suitability of the communication technology to the distribution power system with active renewable energy based generation units is discussed. Subsequently the typical possible communication systems are studied by simulation. In this paper, a novel method of integrating communication system impact into power...

  4. Optimum radiator control to reach a low district heating return temperature; Optimal radiatorreglering foer att naa laag fjaerrvaermereturtemperatur

    Energy Technology Data Exchange (ETDEWEB)

    Ljunggren, Patrick; Wollerstrand, Janusz [Lund Univ. (Sweden). Energy Sciences

    2005-12-15

    The advantages of an improved cooling of primary water in district heating systems are well-known. E.g. heat losses and pumping work can be reduced and the capacity in the network increased. Many kinds of heat production, such as combined heat and power, heat pumps, waste heat and flue gas condensation, are favoured. The choice of connection scheme of district heating substations is nowadays considered to be of less significance for the cooling since the district heating cost only marginally is affected. Of at least the same interest for the cooling, and the cost when flow accounting is applied, is the temperature in the secondary systems connected to the substation. For every combination of space heating system and substation, at given load and supply temperature, there is an optimum magnitude of the flow in the space heating circuit that produces an optimum primary return temperature. It can be shown that, if highest possible cooling of primary water is aimed at, the magnitude of the flow in the circuit should be reduced at part load while the supply temperature should be reduced less than is done with constant flow. One can then speak of a moving transition, with decreasing load, from a high flow balanced system to a low flow balanced system. Oversizing of space heating systems and its components is a rule rather than an exception and implies the possibility to substantially improve the cooling. The calculations and simulations performed show that it is possible, with measurements of temperatures and energy consumption in a space heating system, to estimate the existing oversizing and with that information to establish a temperature program that best fits the system's characteristics. Complete optimization is possible with measurement of the indoor temperature. Online optimization is obstructed by hysteresis in thermostatic valves if the radiators are equipped with these. Both low flow balancing and low temperature adjustment of the oversized space heating

  5. Thermoelectric power generation system optimization studies

    Science.gov (United States)

    Karri, Madhav A.

    A significant amount of energy we consume each year is rejected as waste heat to the ambient. Conservative estimates place the quantity of energy wasted at about 70%. Converting the waste heat into electrical power would be convenient and effective for a number of primary and secondary applications. A viable solution for converting waste heat into electrical energy is to use thermoelectric power conversion. Thermoelectric power generation is based on solid state technology with no moving parts and works on the principle of Seebeck effect. In this work a thermoelectric generator (TEG) system simulator was developed to perform various parametric and system optimization studies. Optimization studies were performed to determine the effect of system size, exhaust and coolant ow conditions, and thermoelectric material on the net gains produced by the TEG system and on the optimum TEG system design. A sports utility vehicle was used as a case study for the application of TEG in mobile systems.

  6. Stimulation de la bio-innovation en vue d'atténuer la pauvreté en Asie

    International Development Research Centre (IDRC) Digital Library (Canada)

    Outputs. Briefs. Improving the small-scale aquaculture to enhance the livelihood of rural farmers. Download PDF. Studies. Lazy gardens : a sustainability experiment in the uplands of Northern Thailand. 49210. Studies. Enhancing sustained adoption of innovations : the case of bio-fertilizers, Philippines. 49207. Papers.

  7. Systemic Design: Two Canadian Case Studies

    Directory of Open Access Journals (Sweden)

    Alex Ryan

    2014-12-01

    Full Text Available This paper introduces two novel applications of systemic design to facilitate a comparison of alternative methodologies that integrate systems thinking and design. In the first case study, systemic design helped the Procurement Department at the University of Toronto re-envision how public policy is implemented and how value is created in the broader university purchasing ecosystem. This resulted in an estimated $1.5 million in savings in the first year, and a rise in user retention rates from 40% to 99%. In the second case study, systemic design helped the clean energy and natural resources group within the Government of Alberta to design a more efficient and effective resource management system and shift the way that natural resource departments work together. This resulted in the formation of a standing systemic design team and contributed to the creation of an integrated resource management system. A comparative analysis of the two projects identifies a shared set of core principles for systemic design as well as areas of differentiation that reveal potential for learning across methodologies. Together, these case studies demonstrate the complementarity of systems thinking and design thinking, and show how they may be integrated to guide positive change within complex sociotechnical systems.

  8. Solar dynamic power system definition study

    Science.gov (United States)

    Wallin, Wayne E.; Friefeld, Jerry M.

    1988-01-01

    The solar dynamic power system design and analysis study compared Brayton, alkali-metal Rankine, and free-piston Stirling cycles with silicon planar and GaAs concentrator photovoltaic power systems for application to missions beyond the Phase 2 Space Station level of technology for all power systems. Conceptual designs for Brayton and Stirling power systems were developed for 35 kWe and 7 kWe power levels. All power systems were designed for 7-year end-of-life conditions in low Earth orbit. LiF was selected for thermal energy storage for the solar dynamic systems. Results indicate that the Stirling cycle systems have the highest performance (lowest weight and area) followed by the Brayton cycle, with photovoltaic systems considerably lower in performance. For example, based on the performance assumptions used, the planar silicon power system weight was 55 to 75 percent higher than for the Stirling system. A technology program was developed to address areas wherein significant performance improvements could be realized relative to the current state-of-the-art as represented by Space Station. In addition, a preliminary evaluation of hardenability potential found that solar dynamic systems can be hardened beyond the hardness inherent in the conceptual designs of this study.

  9. Study of chaos in chaotic satellite systems

    Science.gov (United States)

    Khan, Ayub; Kumar, Sanjay

    2018-01-01

    In this paper, we study the qualitative behaviour of satellite systems using bifurcation diagrams, Poincaré section, Lyapunov exponents, dissipation, equilibrium points, Kaplan-Yorke dimension etc. Bifurcation diagrams with respect to the known parameters of satellite systems are analysed. Poincaré sections with different sowing axes of the satellite are drawn. Eigenvalues of Jacobian matrices for the satellite system at different equilibrium points are calculated to justify the unstable regions. Lyapunov exponents are estimated. From these studies, chaos in satellite system has been established. Solution of equations of motion of the satellite system are drawn in the form of three-dimensional, two-dimensional and time series phase portraits. Phase portraits and time series display the chaotic nature of the considered system.

  10. Enhanced integrated nonthermal treatment system study

    Energy Technology Data Exchange (ETDEWEB)

    Biagi, C.; Schwinkendorf, B.; Teheranian, B.

    1997-02-01

    The purpose of the Enhanced Nonthermal Treatment Systems (ENTS) study is to evaluate alternative configurations of one of the five systems evaluated in the Integrated Nonthermal Treatment Systems (INTS) study. Five alternative configurations are evaluated. Each is designed to enhance the final waste form performance by replacing grout with improved stabilization technologies, or to improve system performance by improving the destruction efficiency for organic contaminants. AU enhanced systems are alternative configurations of System NT-5, which has the following characteristics: Nonthermal System NT-5: (1) catalytic wet oxidation (CWO) to treat organic material including organic liquids, sludges, and soft (or combustible) debris, (2) thermal desorption of inorganic sludge and process residue, (3) washing of soil and inorganic debris with treatment by CWO of removed organic material, (4) metal decontamination by abrasive blasting, (5) stabilization of treated sludge, soil, debris, and untreated debris with entrained contamination in grout, and (6) stabilization of inorganic sludge, salts and secondary waste in polymer. System NT-5 was chosen because it was designed to treat combustible debris thereby minimizing the final waste form volume, and because it uses grout for primary stabilization. The enhanced nonthermal systems were studied to determine the cost and performance impact of replacing grout (a commonly used stabilization agent in the DOE complex) with improved waste stabilization methods such as vitrification and polymer.

  11. Enhanced integrated nonthermal treatment system study

    International Nuclear Information System (INIS)

    Biagi, C.; Schwinkendorf, B.; Teheranian, B.

    1997-02-01

    The purpose of the Enhanced Nonthermal Treatment Systems (ENTS) study is to evaluate alternative configurations of one of the five systems evaluated in the Integrated Nonthermal Treatment Systems (INTS) study. Five alternative configurations are evaluated. Each is designed to enhance the final waste form performance by replacing grout with improved stabilization technologies, or to improve system performance by improving the destruction efficiency for organic contaminants. AU enhanced systems are alternative configurations of System NT-5, which has the following characteristics: Nonthermal System NT-5: (1) catalytic wet oxidation (CWO) to treat organic material including organic liquids, sludges, and soft (or combustible) debris, (2) thermal desorption of inorganic sludge and process residue, (3) washing of soil and inorganic debris with treatment by CWO of removed organic material, (4) metal decontamination by abrasive blasting, (5) stabilization of treated sludge, soil, debris, and untreated debris with entrained contamination in grout, and (6) stabilization of inorganic sludge, salts and secondary waste in polymer. System NT-5 was chosen because it was designed to treat combustible debris thereby minimizing the final waste form volume, and because it uses grout for primary stabilization. The enhanced nonthermal systems were studied to determine the cost and performance impact of replacing grout (a commonly used stabilization agent in the DOE complex) with improved waste stabilization methods such as vitrification and polymer

  12. Study of chaos in chaotic satellite systems

    Indian Academy of Sciences (India)

    In this paper,we study the qualitative behaviour of satellite systems using bifurcation diagrams, Poincaré section, Lyapunov exponents, dissipation, equilibrium points, Kaplan–Yorke dimension etc. Bifurcation diagrams with respect to the known parameters of satellite systems are analysed. Poincaré sections with different ...

  13. SDI Large-Scale System Technology Study

    National Research Council Canada - National Science Library

    1986-01-01

    .... This coordination is addressed by the Battle Management function. The algorithms and technologies required to support Battle Management are the subject of the SDC Large Scale Systems Technology Study...

  14. Reflective Self-Regenerative Systems Architecture Study

    National Research Council Canada - National Science Library

    Pu, Carlton; Blough, Douglas

    2006-01-01

    In this study, we develop the Reflective Self-Regenerative Systems (RSRS) architecture in detail, describing the internal structure of each component and the mutual invocations among the components...

  15. Streamlining Streaming : Tilläggsfunktioner och dess betydelse för att designa en streamingtjänst

    OpenAIRE

    Mähler, Viktor; Näslund, Erik

    2015-01-01

    Streaming is a big field in todays digitalized society. The streaming market is huge, both in regards to the customer base, but also in regards to different providers and their stakes within this market. But how does the different providers go about in order to provide their users with added value? What does the user prioritize? The purpose of this study is to examine which additional functions can be considered important when designing a streaming service, which in turn will create an added ...

  16. Djurassisterad pedagogik : En kvalitativ undersökning om att använda djur som pedagogiskt verktyg i undervisningen

    OpenAIRE

    Byström, Karin

    2017-01-01

    The purpose of the study is to explore different experiences of Animal Assisted Therapy and search into how Animal Assisted Therapy in schools/preschools is already being pursued.To get the answer to my research question, I have done qualitative interviews with people working withAnimal Assisted Therapy in schools and preschools to share their experiences. The purpose of Animal Assisted Therapy may be to practice a specific knowledge, for example reading, but it may also be social interaction...

  17. Att förstå mediekritik : Begreppsliga, empiriska och teoretiska studier av svensk mediekritik 1998-2013

    OpenAIRE

    Svensson, Göran

    2015-01-01

    Media criticism is studied as a concept, as critical expression and as a force for social change. The concept of media criticism is developed in relation to different forms of critical practice, theory about criticism and critique and as a part of theories about media accountability. Media criticism as a force of social change is approached by exploring concepts for the analysis of social and cultural forms of media criticism. Four kinds of media texts published in Sweden between 1998 and 201...

  18. Decontamination system study for the Tank Waste Retrieval System

    International Nuclear Information System (INIS)

    Reutzel, T.; Manhardt, J.

    1994-05-01

    This report summarizes the findings of the Idaho National Engineering Laboratory's decontamination study in support of the Tank Waste Retrieval System (TWRS) development program. Problems associated with waste stored in existing single shell tanks are discussed as well as the justification for the TWRS program. The TWRS requires a decontamination system. The subsystems of the TWRS are discussed, and a list of assumptions pertinent to the TWRS decontamination system were developed. This information was used to develop the functional and operational requirements of the TWRS decontamination system. The requirements were combined with a comprehensive review of currently available decontamination techniques to produced a set of evaluation criteria. The cleaning technologies and techniques were evaluated, and the CO 2 blasting decontamination technique was chosen as the best technology for the TWRS

  19. Coal Integrated Gasification Fuel Cell System Study

    Energy Technology Data Exchange (ETDEWEB)

    Chellappa Balan; Debashis Dey; Sukru-Alper Eker; Max Peter; Pavel Sokolov; Greg Wotzak

    2004-01-31

    This study analyzes the performance and economics of power generation systems based on Solid Oxide Fuel Cell (SOFC) technology and fueled by gasified coal. System concepts that integrate a coal gasifier with a SOFC, a gas turbine, and a steam turbine were developed and analyzed for plant sizes in excess of 200 MW. Two alternative integration configurations were selected with projected system efficiency of over 53% on a HHV basis, or about 10 percentage points higher than that of the state-of-the-art Integrated Gasification Combined Cycle (IGCC) systems. The initial cost of both selected configurations was found to be comparable with the IGCC system costs at approximately $1700/kW. An absorption-based CO2 isolation scheme was developed, and its penalty on the system performance and cost was estimated to be less approximately 2.7% and $370/kW. Technology gaps and required engineering development efforts were identified and evaluated.

  20. Wind energy systems information user study

    Energy Technology Data Exchange (ETDEWEB)

    Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

    1981-01-01

    This report describes the results of a series of telephone interviews with potential users of information on wind energy conversion. These interviews, part of a larger study covering nine different solar technologies, attempted to identify: the type of information each distinctive group of information users needed, and the best way of getting information to that group. Groups studied include: wind energy conversion system researchers; wind energy conversion system manufacturer representatives; wind energy conversion system distributors; wind turbine engineers; utility representatives; educators; county agents and extension service agents; and wind turbine owners.

  1. An artificial intelligence system for reliability studies

    International Nuclear Information System (INIS)

    Llory, M.; Ancelin, C.; Bannelier, M.; Bouhadana, H.; Bouissou, M.; Lucas, J.Y.; Magne, L.; Villate, N.

    1990-01-01

    The EDF (French Electricity Company) software developed for computer aided reliability studies is considered. Such software tools were applied in the study of the safety requirements of the Paluel nuclear power plant. The reliability models, based on IF-THEN type rules, and the generation of models by the expert system are described. The models are then processed applying algorithm structures [fr

  2. Study on Online Hotel Reservation Systems

    OpenAIRE

    Alleweldt, Frank; Tonner, Klaus; McDonald, Marc

    2009-01-01

    This study, conducted by Civic Consulting, looks at both pre-contractual and contractual matters concerning online hotel reservation systems, examines relevant Community rules, identifies gaps and, where needed, discusses possible policy options. Key conclusions The study shows that the impact of Community law on online hotel

  3. System identification advances and case studies

    CERN Document Server

    Mehra, Raman K

    1976-01-01

    In this book, we study theoretical and practical aspects of computing methods for mathematical modelling of nonlinear systems. A number of computing techniques are considered, such as methods of operator approximation with any given accuracy; operator interpolation techniques including a non-Lagrange interpolation; methods of system representation subject to constraints associated with concepts of causality, memory and stationarity; methods of system representation with an accuracy that is the best within a given class of models; methods of covariance matrix estimation;methods for low-rank mat

  4. A code system for ADS transmutation studies

    International Nuclear Information System (INIS)

    Brolly, A.; Vertes, P.

    2001-01-01

    An accelerator driven reactor physical system can be divided into two different subsystems. One is the neutron source the other is the subcritical reactor. Similarly, the modelling of such system is also split into two parts. The first step is the determination of the spatial distribution and angle-energy spectrum of neutron source in the target region; the second one is the calculation of neutron flux which is responsible for the transmutation process in the subcritical system. Accelerators can make neutrons from high energy protons by spallation or photoneutrons from accelerated electrons by Bremsstrahlung (e-n converter). The Monte Carlo approach is the only way of modelling such processes and it might be extended to the whole subcritical system as well. However, a subcritical reactor may be large, it may contain thermal regions and the lifetime of neutrons may be long. Therefore a comprehensive Monte Carlo modelling of such system is a very time consuming computational process. It is unprofitable as well when applied to system optimization that requires a comparative study of large number of system variants. An appropriate method of deterministic transport calculation may adequately satisfy these requirements. Thus, we have built up a coupled calculational model for ADS to be used for transmutation of nuclear waste which we refer further as M-c-T system. Flow chart is shown in Figure. (author)

  5. Att argumentera om ekonomisk legitimitet

    DEFF Research Database (Denmark)

    Cockburn, Patrick Joseph

    2011-01-01

    What counts as ‘work’ in societies is a matter of dispute. This paper treats such disagreements as part of broader struggles over economic legitimacy wherein people use language persuasively to make accounts of their own and others’ activities. It briefly introduces activities around which...

  6. Modified gateway system for double shRNA expression and Cre/lox based gene expression

    Directory of Open Access Journals (Sweden)

    Leung Lisa

    2011-03-01

    Full Text Available Abstract Background The growing need for functional studies of genes has set the stage for the development of versatile tools for genetic manipulations. Results Aiming to provide tools for high throughput analysis of gene functions, we have developed a modified short hairpin RNA (shRNA and gene expression system based on Gateway Technology. The system contains a series of entry and destination vectors that enables easy transfer of shRNA or cDNA into lentiviral expression systems with a variety of selection or marker genes (i.e. puromycin, hygromycin, green fluorescent protein-EGFP, yellow fluorescent protein-YFP and red fluorescent protein-dsRed2. Our shRNA entry vector pENTR.hU6.hH1 containing two tandem human shRNA expression promoters, H1 and U6, was capable of co-expressing two shRNA sequences simultaneously. The entry vector for gene overexpression, pENTR.CMV.ON was constructed to contain CMV promoter with a multiple cloning site flanked by loxP sites allowing for subsequent Cre/lox recombination. Both shRNA and cDNA expression vectors also contained attL sites necessary for recombination with attR sites in our destination expression vectors. As proof of principle we demonstrate the functionality and efficiency of this system by testing expression of several cDNA and shRNA sequences in a number of cell lines. Conclusion Our system is a valuable addition to already existing library of Gateway based vectors and can be an essential tool for many aspects of gene functional studies.

  7. Modified gateway system for double shRNA expression and Cre/lox based gene expression.

    Science.gov (United States)

    Radulovich, Nikolina; Leung, Lisa; Tsao, Ming-Sound

    2011-03-22

    The growing need for functional studies of genes has set the stage for the development of versatile tools for genetic manipulations. Aiming to provide tools for high throughput analysis of gene functions, we have developed a modified short hairpin RNA (shRNA) and gene expression system based on Gateway Technology. The system contains a series of entry and destination vectors that enables easy transfer of shRNA or cDNA into lentiviral expression systems with a variety of selection or marker genes (i.e. puromycin, hygromycin, green fluorescent protein-EGFP, yellow fluorescent protein-YFP and red fluorescent protein-dsRed2). Our shRNA entry vector pENTR.hU6.hH1 containing two tandem human shRNA expression promoters, H1 and U6, was capable of co-expressing two shRNA sequences simultaneously. The entry vector for gene overexpression, pENTR.CMV.ON was constructed to contain CMV promoter with a multiple cloning site flanked by loxP sites allowing for subsequent Cre/lox recombination. Both shRNA and cDNA expression vectors also contained attL sites necessary for recombination with attR sites in our destination expression vectors. As proof of principle we demonstrate the functionality and efficiency of this system by testing expression of several cDNA and shRNA sequences in a number of cell lines. Our system is a valuable addition to already existing library of Gateway based vectors and can be an essential tool for many aspects of gene functional studies.

  8. Depleted uranium plasma reduction system study

    International Nuclear Information System (INIS)

    Rekemeyer, P.; Feizollahi, F.; Quapp, W.J.; Brown, B.W.

    1994-12-01

    A system life-cycle cost study was conducted of a preliminary design concept for a plasma reduction process for converting depleted uranium to uranium metal and anhydrous HF. The plasma-based process is expected to offer significant economic and environmental advantages over present technology. Depleted Uranium is currently stored in the form of solid UF 6 , of which approximately 575,000 metric tons is stored at three locations in the U.S. The proposed system is preconceptual in nature, but includes all necessary processing equipment and facilities to perform the process. The study has identified total processing cost of approximately $3.00/kg of UF 6 processed. Based on the results of this study, the development of a laboratory-scale system (1 kg/h throughput of UF6) is warranted. Further scaling of the process to pilot scale will be determined after laboratory testing is complete

  9. Pulsmätning och stegräkning från Android Wear : Utveckling av en applikation för att spara mätdata

    OpenAIRE

    Lund, Fredrik

    2016-01-01

    Detta examensarbete beskriver utvecklingen av en applikation för att överföra data från en Android Wear smartklocka till en Android smarttelefon som sedan skickar datan vidare till en server. Servern sätter in datan i en MySQL-databas. Android Wear smartklockornas sensorer undersöks även. Smartklockorna har sensorer för stegräkning och pulsmätning. I examensarbetet beskrivs det hur sensorerna fungerar. Därtill genomgås Androids historia i korta drag samt basfunktionerna i Android operativsyst...

  10. Dömda att leva i skuggan : En kvalitativ intervjustudie om hälsan hos personer med albinism i Rwanda, utifrån begreppen diskriminering, coping och socialt stöd

    OpenAIRE

    Niyonkuru, Elsie Diane

    2016-01-01

    Bakgrund: Oculocutaneous albinism (OCA) är en ärftlig sjukdom som fysiskt, psykiskt och socialt påverkar de drabbade individerna. Okunskap, fördomar och myter om albinism utgör de största orsakerna till den diskriminering som personer med albinism utsatts för särskilt i vissa länder i Afrika söder om Sahara. Syfte: Syftet är att beskriva hälsan hos personer med albinism i Rwanda, utifrån begreppen diskriminering, coping och socialt stöd. Metod: En kvalitativ metod med induktiv ansats ligger t...

  11. Att lära sig se trådraken – om tvekan och fokusförskjutning på väg mot förändrat kunnande

    OpenAIRE

    Johansson, Ann-Marlene; Lindberg, Viveca

    2017-01-01

    Utgångspunkten i denna artikel är empiriskt förankrade exempel från textilslöjdspraktiker i den svenska skolan; grundskolans slöjdundervisning årskurs 8 och ett specialutformat program inom gymnasieskolan med textil inriktning i årskurserna 1 och 3. Artikelns videoutdrag handlar alla om principiellt samma handling – trådrak mönsterutläggning på tyg – men, dels finns det två olika inramningar (grundskolan och gymnasieskolan), och dels exemplifierar de olika skeden av kunnande. Syftet är att be...

  12. [Ose, Ieva. Livonijas pilu attēli no marķīza Pauluči albuma - Abbildungen der livländischen Burgen im Album des Marquis Paulucci] / Ivar Leimus

    Index Scriptorium Estoniae

    Leimus, Ivar, 1953-

    2011-01-01

    Arvustus: Livonijas pilu attēli no marķīza Pauluči albuma = Abbildungen der livländischen Burgen im Album des Marquis Paulucci. LU Latvijas vēstures institūts; Latvijas Akadēmiska biblioteka. (Rīga, 2008.) Kuramaa, Liivimaa ja Eestimaa pildialbumitest, mis tõenäoliselt on valminud aastatel 1827-1830, mis on nüüd välja antud ühiste kaante vahel. Tekst tõlgitud saksa keelde

  13. Study on three dimensional seismic isolation system

    International Nuclear Information System (INIS)

    Morishita, Masaki; Kitamura, Seiji

    2003-01-01

    Japan Nuclear Cycle Development Institute (JNC) and Japan Atomic Power Company (JAPC) launched joint research programs on structural design and three-dimensional seismic isolation technologies, as part of the supporting R and D activities for the feasibility studies on commercialized fast breeder reactor cycle systems. A research project by JAPC under the auspices of the Ministry of Economy, Trade, and Industry (METI) with technical support by JNC is included in this joint study. This report contains the results of the research on the three-dimensional seismic isolation technologies, and the results of this year's study are summarized in the following five aspects. (1) Study on Earthquake Condition for Developing 3-dimensional Base Isolation System. The case study S2 is one of the maximum ground motions, of which the records were investigated up to this time. But a few observed near the fault exceed the case study S2 in the long period domain, depending on the fault length and conditions. Generally it is appropriate that the response spectra ratio (vertical/horizontal) is 0.6. (2) Performance Requirement for 3-dimensional Base Isolation System and Devices. Although the integrity map of main equipment/piping dominate the design criteria for the 3-dimensional base isolation system, the combined integrity map is the same as those of FY 2000, which are under fv=1Hz and over hv=20%. (3) Developing Targets and Schedule for 3-dimensional Isolation Technology. The target items for 3-dimensional base isolation system were rearranged into a table, and developing items to be examined concerning the device were also adjusted. A development plan until FY 2009 was made from the viewpoint of realization and establishment of a design guideline on 3-dimensional base isolation system. (4) Study on 3-dimensional Entire Building Base Isolation System. Three ideas among six ideas that had been proposed in FY2001, i.e., '3-dimensional base isolation system incorporating hydraulic

  14. A long path length spectroelectrochemical behavior analysis of the coabsorption system.

    Science.gov (United States)

    Zhang, J; Zhou, A; Xie, Q; Wei, W

    2000-08-16

    The coabsorption system in which both species Red and Ox absorb at the same wavelength was investigated by the long path length spectroelectrochemical technique. The variation of the system absorbance at the isosbestic point with time, which is strongly dependent upon the diffusion coefficients and their difference, was calculated by employing the method of digital simulation under semi-infinite condition. Simulated results indicated that each A(t)-t curve corresponded to definite values of D(R) and D(O) on the condition that D(R) is not equal to D(O). The species diffusion coefficients were evaluated by comparing the spectroelectrochemical experimental result at the isosbestic point with the simulated result, and experimentally verified by the study of electrooxidation of hydroquinone.

  15. Företaget Manchester United : En kontraktsekonomisk studie

    OpenAIRE

    Ellermann, Daniel; Lönnefelt, Hans

    2004-01-01

    Denna kontraktsekonomiska studie behandlar fotbollsklubben och företaget Manchester United, en av världens största och framgångsrika klubbar alla kategorier. Syftet med uppsatsen är att dels kartlägga Manchester Uniteds kontraktsnät, dels att begripliggöra de kontraktsrelationer som särskiljer Manchester United från vanliga nuvärdesmaximerande företag utifrån kontraktsekonomisk teori. Den ekonomiska teori som ihuvudsak används i uppsatsen är kontraktsekonomisk teori som innefattar teorier om...

  16. Design study of advanced nuclear fuel recycle system. Conceptual study of recycle system using molten salt

    International Nuclear Information System (INIS)

    Kakehi, I.; Shirai, N.; Hatano, M.; Kajitani, M.; Yonezawa, S.; Kawai, T.; Kawamura, F.; Tobe, K.; Takahashi, K.

    1996-12-01

    For the purpose of developing the future nuclear fuel recycle system, the design study of the advanced nuclear fuel recycle system is being conducted. This report describes intermediate accomplishments in the conceptual system study of the advanced nuclear fuel recycle system. Fundamental concepts of this system is the recycle system using molten salt which intend to break through the conventional concepts of purex and pellet fuel system. Contents of studies in this period are as follows, 1)feasibility study of the process by Cd-cathode for nitride fuel, 2)application study for the molten salt of low melting point (AlCl3+organic salt), 3)research for decladding (advantage of decladding by heat treatment), 4)behavior of FPs in electrorefining (behavior of iodine and volatile FP chlorides, FPs behavior in chlorination), 5)criticality analysis in electrorefiner, 6)drawing of off-gas flow diagram, 7)drawing of process machinery concept (cathode processor, vibration packing), 8)evaluation for the amounts of the high level radioactive wastes, 9)quality of the recycle fuels (FPs contamination of recycle fuel), 10)conceptual study of in-cell handling system, 11)meaning of the advanced nuclear fuel recycle system. The conceptual system study will be completed in describing concepts of the system and discussing issues for the developments. (author)

  17. TRANSPORT MECHANISM STUDIES OF CHITOSAN ELECTROLYTE SYSTEMS

    International Nuclear Information System (INIS)

    Navaratnam, S.; Ramesh, K.; Ramesh, S.; Sanusi, A.; Basirun, W.J.; Arof, A.K.

    2015-01-01

    ABSTRACT: Knowledge of ion-conduction mechanisms in polymers is important for designing better polymer electrolytes for electrochemical devices. In this work, chitosan-ethylene carbonate/propylene carbonate (chitosan-EC/PC) system with lithium acetate (LiCH 3 COO) and lithium triflate (LiCF 3 SO 3 ) as salts were prepared and characterized using electrochemical impedance spectroscopy to study the ion-conduction mechanism. It was found that the electrolyte system using LiCF 3 SO 3 salt had a higher ionic conductivity, greater dielectric constant and dielectric loss value compared to system using LiCH 3 COO at room temperature. Hence, it may be inferred that the system incorporated with LiCF 3 SO 3 dissociated more readily than LiCH 3 COO. Conductivity mechanism for the systems, 42 wt.% chitosan- 28 wt.% LiCF 3 SO 3 -30 wt.% EC/PC (CLT) and 42 wt.% chitosan-28 wt.% LiCH 3 COO-30 wt.% EC/PC (CLA) follows the overlapping large polaron tunneling (OLPT) model. Results show that the nature of anion size influences the ionic conduction of chitosan based polymer electrolytes. The conductivity values of the CLA system are found to be higher than that of CLT system at higher temperatures. This may be due to the vibration of bigger triflate anions would have hindered the lithium ion movements. FTIR results show that lithium ions can form complexation with polymer host which would provide a platform for ion hopping

  18. Systems interaction study of a Westinghouse PWR

    International Nuclear Information System (INIS)

    Youngblood, R.; Hanan, N.; Fitzpatrick, R.; Xue, D.; Bozoki, G.; Fresco, A.; Papazoglou, I.A.

    1985-01-01

    This paper presents methods and findings of a systems interaction study of Indian Point 3. The study was carried out in support of the resolution of Unresolved Safety Issue A-17 on Systems Interactions. Fault tree methods were employed. Among the study's findings is a single active failure in the low pressure injection function; this discovery led to a plant modification. In addition to providing support to the staff in resolving USI A-17, the project discovered an important new class of failure modes which led the utility to implement a hardware modification. The scope of the project is indicated, key features of the method are highlighted findings are discussed, and comments are offered on the usefulness of this type of, principal study. 9 refs., 1 fig., 1 tab

  19. Studies on Semantic Systems Chemical Biology

    Science.gov (United States)

    Chen, Bin

    2012-01-01

    Current "one disease, one target and one drug" drug development paradigm is under question as relatively few drugs have reached the market in the last two decades. Increasingly research focus is being placed on the study of drug action against biological systems as a whole rather than against a single component (called "Systems…

  20. Laser fusion system design study. Final report

    International Nuclear Information System (INIS)

    1975-01-01

    The following studies were completed: (1) The synthesis of a pointing/control system compatible with existing and advanced laser opto-mechanical configurations. (2) Attainment of the required pointing angle, longitudinal focus, and differential pathlength accuracies. (3) Maximum modularization of the sensor and gimbal assemblies to provide the required accuracies at minimum cost. Detailed information is given on each. (MOW)

  1. Study of chaos in chaotic satellite systems

    Indian Academy of Sciences (India)

    Ayub Khan

    2017-12-27

    Dec 27, 2017 ... In this paper, we study the qualitative behaviour of satellite systems using bifurcation diagrams, Poincaré section, Lyapunov exponents .... The quantitative test for the chaotic behaviour can sometimes distinguish it ..... design and applications (CRC Press, Taylor and Francis. Group, 2013). [2] SDjaouida, Int.

  2. Preliminary Systems Design Study assessment report

    International Nuclear Information System (INIS)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. This volume of the Systems Design Study contain four Appendixes that were part of the study. Appendix A is an EG ampersand G Idaho, Inc., report that represents a review and compilation of previous reports describing the wastes and quantities disposed in the Subsurface Disposal Area of the Idaho National Engineering Laboratory. Appendix B contains the process flowsheets considered in this study, but not selected for detailed analysis. Appendix C is a historical tabulation of radioactive waste incinerators. Appendix D lists Department of Energy facilities where cementation stabilization systems have been used

  3. Mobile Systems Development: An Empirical Study

    DEFF Research Database (Denmark)

    Hosbond, J. H.

    As part of an ongoing study on mobile systems development (MSD), this paper presents preliminary findings of research-in-progress. The debate on mobility in research has so far been dominated by mobile HCI, technological innovations, and socio-technical issues related to new and emerging mobile w...

  4. Three dimensional electrochemical system for neurobiological studies

    DEFF Research Database (Denmark)

    Vazquez, Patricia; Dimaki, Maria; Svendsen, Winnie Edith

    2009-01-01

    In this work we report a novel three dimensional electrode array for electrochemical measurements in neuronal studies. The main advantage of working with these out-of-plane structures is the enhanced sensitivity of the system in terms of measuring electrochemical changes in the environment...

  5. Global Hawk Systems Engineering. Case Study

    Science.gov (United States)

    2010-01-01

    Charles Garland, whose support was integral in guiding me throughout this case study. Bill Kinzig Global Hawk Systems Engineering Case Study...necessary to characterize the system’s utility. 3.2.3.2 First Flight AV-1 rolled out of the TRA facility on February 20, 1997. While at Lindbergh Field... Lindbergh Field, but its delivery to Edwards AFB, California, was already late. Thus, the air vehicle was disassembled and trucked to Edwards AFB on

  6. Mobile Variable Depth Sampling System Design Study

    Energy Technology Data Exchange (ETDEWEB)

    BOGER, R.M.

    2000-08-25

    A design study is presented for a mobile, variable depth sampling system (MVDSS) that will support the treatment and immobilization of Hanford LAW and HLW. The sampler can be deployed in a 4-inch tank riser and has a design that is based on requirements identified in the Level 2 Specification (latest revision). The waste feed sequence for the MVDSS is based on Phase 1, Case 3S6 waste feed sequence. Technical information is also presented that supports the design study.

  7. Mobile Variable Depth Sampling System Design Study

    International Nuclear Information System (INIS)

    BOGER, R.M.

    2000-01-01

    A design study is presented for a mobile, variable depth sampling system (MVDSS) that will support the treatment and immobilization of Hanford LAW and HLW. The sampler can be deployed in a 4-inch tank riser and has a design that is based on requirements identified in the Level 2 Specification (latest revision). The waste feed sequence for the MVDSS is based on Phase 1, Case 3S6 waste feed sequence. Technical information is also presented that supports the design study

  8. A Study of Vicon System Positioning Performance

    Directory of Open Access Journals (Sweden)

    Pierre Merriaux

    2017-07-01

    Full Text Available Motion capture setups are used in numerous fields. Studies based on motion capture data can be found in biomechanical, sport or animal science. Clinical science studies include gait analysis as well as balance, posture and motor control. Robotic applications encompass object tracking. Today’s life applications includes entertainment or augmented reality. Still, few studies investigate the positioning performance of motion capture setups. In this paper, we study the positioning performance of one player in the optoelectronic motion capture based on markers: Vicon system. Our protocol includes evaluations of static and dynamic performances. Mean error as well as positioning variabilities are studied with calibrated ground truth setups that are not based on other motion capture modalities. We introduce a new setup that enables directly estimating the absolute positioning accuracy for dynamic experiments contrary to state-of-the art works that rely on inter-marker distances. The system performs well on static experiments with a mean absolute error of 0.15 mm and a variability lower than 0.025 mm. Our dynamic experiments were carried out at speeds found in real applications. Our work suggests that the system error is less than 2 mm. We also found that marker size and Vicon sampling rate must be carefully chosen with respect to the speed encountered in the application in order to reach optimal positioning performance that can go to 0.3 mm for our dynamic study.

  9. Cost Accounting System for fusion studies

    Energy Technology Data Exchange (ETDEWEB)

    Hamilton, W.R.; Keeton, D.C.; Thomson, S.L.

    1985-12-01

    A Cost Accounting System that is applicable to all magnetic fusion reactor design studies has been developed. This system provides: (1) definitions of the elements of cost and methods for the combination of these elements to form a cost estimate; (2) a Code of Accounts that uses a functional arrangement for identification of the plant components; and (3) definitions and methods to analyze actual cost data so that the data can be directly reported into this Cost Accounting System. The purpose of the Cost Accounting System is to provide the structure for the development of a fusion cost data base and for the development of validated cost estimating procedures. This system has been developed through use at the Fusion Engineering Design Center (FEDC) and has been applied to different confinement concepts (tokamaks and tandem mirrors) and to different types of projects (experimental devices and commercial power plants). The use of this Cost Accounting System by all magnetic fusion projects will promote the development of a common cost data base, allow the direct comparison of cost estimates, and ultimately establish the cost credibility of the program.

  10. Photometric study of the M51 system

    International Nuclear Information System (INIS)

    Burkhead, M.S.

    1978-01-01

    Photoelectric and photographic data are presented for the two components of the M51 system, NGC 5194 and NGC 5195. The photoelectric observations (UBV and I) are presented as a series of drift scans with various diaphragm sizes covering the bright central and faint outer regions. These data indicate the complexity and the very large extent of the system. Colors and magnitudes of the spiral arms are presented. The I data in particular show the broad spiral features first shown photographically by Zwicky. Deep, integrated photographic plates (IIIa-J) also show the large, structured outer regions and the complex nature of the region between the two galaxies. Calibrated contour maps and integrated luminosities of the system are presented.The maximum detected extent of the system is 40 arcmin or 120kpc. If a M/L ratio of 10 is assumed, the mass in the outer envelope is equal to the mass obtained for the more familiar bright optical components.These data and their presentation in the form of photoelectric drift scans, composite photographs, contour maps, and three-dimensional plots show the marvelous complexity of the system. It would seem that the individual galaxies, NGC 5194 and NGC 5195, cannot be considered separately but must be studied in the context of their being members of the M51 system

  11. Cost Accounting System for fusion studies

    International Nuclear Information System (INIS)

    Hamilton, W.R.; Keeton, D.C.; Thomson, S.L.

    1985-12-01

    A Cost Accounting System that is applicable to all magnetic fusion reactor design studies has been developed. This system provides: (1) definitions of the elements of cost and methods for the combination of these elements to form a cost estimate; (2) a Code of Accounts that uses a functional arrangement for identification of the plant components; and (3) definitions and methods to analyze actual cost data so that the data can be directly reported into this Cost Accounting System. The purpose of the Cost Accounting System is to provide the structure for the development of a fusion cost data base and for the development of validated cost estimating procedures. This system has been developed through use at the Fusion Engineering Design Center (FEDC) and has been applied to different confinement concepts (tokamaks and tandem mirrors) and to different types of projects (experimental devices and commercial power plants). The use of this Cost Accounting System by all magnetic fusion projects will promote the development of a common cost data base, allow the direct comparison of cost estimates, and ultimately establish the cost credibility of the program

  12. Study on cooperative active sensing system

    International Nuclear Information System (INIS)

    Kita, Nobuyuki

    1996-01-01

    Electrotechnical Laboratory is involved in the development and the improvement of three dimensional geometrical modeling for the work environment including various kinds of robots. Here, the research on the system which allows to materialize an active sensing by the cooperation of robots and the construction of an experimental system for the assessment of such modeling were reviewed. In the second stage of this project, the development of cooperative active sensory system with small size mobile robots as an operation platform was attempted. Thus, studies on the sensing techniques for robot operation and the real-time sensing techniques were started. An electric binocular head was prepared after consideration of size, cost and convenience and attached to the commercially available mobile robot base (Mouse 89, Japan System Design Co., Ltd.). The small mobile robot capable of binocular visual tracing thus obtained was confirmed to be highly efficient by various cooperative control experiments although the head was prepared at the sacrifice of control characteristics. Next, a real-time sensing system which allows to trace a moving object was constructed on the basis of Zero Disparity Filter (ZDF) produced by Kaenel et al. and further improved in the respect of the difficulty in real time processing and an expanded type ZDF was obtained. This system is routinely used as an basic vision unit for a mobile robot in the presence. (M.N.)

  13. Exploration Medical System Trade Study Tools Overview

    Science.gov (United States)

    Mindock, J.; Myers, J.; Latorella, K.; Cerro, J.; Hanson, A.; Hailey, M.; Middour, C.

    2018-01-01

    ExMC is creating an ecosystem of tools to enable well-informed medical system trade studies. The suite of tools address important system implementation aspects of the space medical capabilities trade space and are being built using knowledge from the medical community regarding the unique aspects of space flight. Two integrating models, a systems engineering model and a medical risk analysis model, tie the tools together to produce an integrated assessment of the medical system and its ability to achieve medical system target requirements. This presentation will provide an overview of the various tools that are a part of the tool ecosystem. Initially, the presentation's focus will address the tools that supply the foundational information to the ecosystem. Specifically, the talk will describe how information that describes how medicine will be practiced is captured and categorized for efficient utilization in the tool suite. For example, the talk will include capturing what conditions will be planned for in-mission treatment, planned medical activities (e.g., periodic physical exam), required medical capabilities (e.g., provide imaging), and options to implement the capabilities (e.g., an ultrasound device). Database storage and configuration management will also be discussed. The presentation will include an overview of how these information tools will be tied to parameters in a Systems Modeling Language (SysML) model, allowing traceability to system behavioral, structural, and requirements content. The discussion will also describe an HRP-led enhanced risk assessment model developed to provide quantitative insight into each capability's contribution to mission success. Key outputs from these various tools, to be shared with the space medical and exploration mission development communities, will be assessments of medical system implementation option satisfaction of requirements and per-capability contributions toward achieving requirements.

  14. Flight Path Recovery System (FPRS) design study

    International Nuclear Information System (INIS)

    1978-09-01

    The study contained herein presents a design for a Flight Path Recovery System (FPPS) for use in the NURE Program which will be more accurate than systems presently used, provide position location data in digital form suitable for automatic data processing, and provide for flight path recovery in a more economic and operationally suitable manner. The design is based upon the use of presently available hardware and technoloy, and presents little, it any, development risk. In addition, a Flight Test Plan designed to test the FPRS design concept is presented

  15. Flight Path Recovery System (FPRS) design study

    Energy Technology Data Exchange (ETDEWEB)

    1978-09-01

    The study contained herein presents a design for a Flight Path Recovery System (FPPS) for use in the NURE Program which will be more accurate than systems presently used, provide position location data in digital form suitable for automatic data processing, and provide for flight path recovery in a more economic and operationally suitable manner. The design is based upon the use of presently available hardware and technoloy, and presents little, it any, development risk. In addition, a Flight Test Plan designed to test the FPRS design concept is presented.

  16. Microemulsion Drug Delivery Systems for Radiopharmacy Studies

    Directory of Open Access Journals (Sweden)

    Emre Ozgenc

    2016-11-01

    Full Text Available Microemulsions have been used increasingly for last year’s because of ideal properties like favorable drug delivery, ease of preparation and physical stability. They have been improved the solubility and efficacy of the drug and reduce the side effects. Use of radiolabeled microemulsions plays an alternative role in drug delivery systems by investigating the formation, stability and application of microemulsions in radiopharmacy. Gama scintigraphic method is well recognized for developing and detecting the biodistribution of newly developed drugs or formulation. This review will focus on how radionuclides are able to play role with characterization studies of microemulsion drug delivery systems.

  17. Review of relevant studies of isolated systems

    DEFF Research Database (Denmark)

    Hansen, L.H.; Lundsager, P.

    2001-01-01

    The report presents the results of a review of studies relating to integration of wind energy in isolated power supply systems, based on a systematic literature survey. The purpose of the study is to develop a methodology consisting of a set of guidelinesfor wind energy projects in isolated energy...... systems and a set of tools and models that are operational on an engineering level. The review is based on a literature search in the ETDE Energy Database with a main search covering the period 7/88 to 6/97 andsupplemented by partial update periods. A few newer references have been included in the review......, most notably the IEC/PAS 62111 specification. The amount of wind energy literature related to the subject is excessively large, and a complete review inwhich every relevant abstract is identified and examined is not feasible within the framework of this (or probably any other) study. The review results...

  18. Biomass energy systems information user study

    Energy Technology Data Exchange (ETDEWEB)

    Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

    1981-02-01

    The results of a series of telephone interviews with groups of users of information on biomass energy systems are described. These results, part of a larger study on many different solar technologies, identify types of information each group needed and the best ways to get information to each group. This report is 1 of 10 discussing study results. The overall study provides baseline data about information needs in the solar community. Results from 12 biomass groups of respondents are analyzed in this report: Federally Funded Researchers (2 groups), Nonfederally Funded Researchers (2 groups), Representatives of Manufacturers (2 groups), Representatives of State Forestry Offices, Private Foresters, Forest Products Engineers, Educators, Cooperative Extension Service County Agents, and System Managers. The data will be used as input to the determination of information products and services the Solar Energy Research Institute, the Solar Energy Information Data Bank Network, and the entire information outreach community should be preparing and disseminating.

  19. A systems biology approach to study systemic inflammation.

    Science.gov (United States)

    Chen, Bor-Sen; Wu, Chia-Chou

    2014-01-01

    Systemic inflammation needs a precise control on the sequence and magnitude of occurring events. The high throughput data on the host-pathogen interactions gives us an opportunity to have a glimpse on the systemic inflammation. In this article, a dynamic Candida albicans-zebrafish interactive infectious network is built as an example to demonstrate how systems biology approach can be used to study systematic inflammation. In particular, based on microarray data of C. albicans and zebrafish during infection, the hyphal growth, zebrafish, and host-pathogen intercellular PPI networks were combined to form an integrated infectious PPI network that helps us understand the systematic mechanisms underlying the pathogenicity of C. albicans and the immune response of the host. The signaling pathways for morphogenesis and hyphal growth of C. albicans were 2 significant interactions found in the intercellular PPI network. Two cellular networks were also developed corresponding to the different infection stages (adhesion and invasion), and then compared with each other to identify proteins to gain more insight into the pathogenic role of hyphal development in the C. albicans infection process. Important defense-related proteins in zebrafish were predicted using the same approach. This integrated network consisting of intercellular invasion and cellular defense processes during infection can improve medical therapies and facilitate development of new antifungal drugs.

  20. System Losses and Assessment Trade Study

    International Nuclear Information System (INIS)

    Shropshire, David; Piet, Steve; Soelberg, Nick; Cherry, Robert; Henry, Roger; Meikrantz, David; Teske, Greg; Shaber, Eric; Pereira, Candido

    2009-01-01

    This Advanced Fuel Cycle Initiative (AFCI) study has developed new analysis methods to examine old and new technology options toward the goal of improving fuel cycle systems. We have integrated participants and information from AFCI Systems Analysis, Transmutation Fuels, Separations, and Waste Form Campaigns in the Systems Losses and Assessment Trade Study. The initial objectives of this study were to (1) increase understanding of system interdependencies and thereby identify system trade-offs that may yield important insights, (2) define impacts of separations product purity on fuel manufacture and transmutation reactivity, (3) define impacts from transuranic (TRU) losses to waste, (4) identify the interrelationships involved in fuels and separations technology performance, and (5) identify system configuration adjustments with the greatest potential for influencing system losses. While bounding and analyzing this initial problem, we also identified significantly higher-level programmatic drivers with broad implications to the current fuel cycle research charter and the general issue of a DOE complex wide need for a comprehensive and integrated nuclear material management as addressed by the new DOE Order 410.2 titled 'Management of Nuclear Materials'. The initial modeling effort developed in this study for a much smaller subset of material (i.e., commercial fuel) and a selected transmutation scheme (i.e., fast reactor recycling) is a necessary first step towards examining a broader set of nuclear material management options, dispositioning strategies and integrated waste management options including potential areas of research leverage. The primary outcome from this initial study has been an enhanced integration among Campaigns and associated insights and analysis methods. Opportunities for improved understanding between the groups abound. The above lanthanide-actinide example highlights the importance of evaluating options via integration across the Campaigns

  1. System Losses and Assessment Trade Study

    Energy Technology Data Exchange (ETDEWEB)

    David Shropshire; Steve Piet; Nick Soelberg; Robert Cherry; Roger Henry; David Meikrantz; Greg Teske; Eric Shaber; Candido Pereira

    2009-09-01

    This Advanced Fuel Cycle Initiative (AFCI) study has developed new analysis methods to examine old and new technology options toward the goal of improving fuel cycle systems. We have integrated participants and information from AFCI Systems Analysis, Transmutation Fuels, Separations, and Waste Form Campaigns in the Systems Losses and Assessment Trade Study. The initial objectives of this study were to 1) increase understanding of system interdependencies and thereby identify system trade-offs that may yield important insights, 2) define impacts of separations product purity on fuel manufacture and transmutation reactivity, 3) define impacts from transuranic (TRU) losses to waste, 4) identify the interrelationships involved in fuels and separations technology performance, and 5) identify system configuration adjustments with the greatest potential for influencing system losses. While bounding and analyzing this initial problem, we also identified significantly higher-level programmatic drivers with broad implications to the current fuel cycle research charter and the general issue of a DOE complex wide need for a comprehensive and integrated nuclear material management as addressed by the new DOE Order 410.2 titled “Management of Nuclear Materials”. The initial modeling effort developed in this study for a much smaller subset of material (i.e., commercial fuel) and a selected transmutation scheme (i.e., fast reactor recycling) is a necessary first step towards examining a broader set of nuclear material management options, dispositioning strategies and integrated waste management options including potential areas of research leverage. The primary outcome from this initial study has been an enhanced integration among Campaigns and associated insights and analysis methods. Opportunities for improved understanding between the groups abound. The above lanthanide-actinide example highlights the importance of evaluating options via integration across the Campaigns

  2. File System Virtual Appliances

    Science.gov (United States)

    2010-05-01

    System [80]. In Sun’s VFS paper, Kleiman stated that “Sun is currently discussing with AT&T and Berkeley the merging of this interface with AT&T’s File...26] DeBergalis, M., Corbett, P., Kleiman , S., Lent, A., Noveck, D., Talpey, T., and Wittle, M. 2003. The Direct Access File System. In Conference on...Users Group Meeting. 481–496. [51] Katcher, J. 1997. PostMark: A New File System Benchmark. Tech. Rep. TR3022, Network Appliance. October. [52] Kleiman , S

  3. Preliminary systems design study assessment report

    International Nuclear Information System (INIS)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each. This volume contains the descriptions and other relevant information of the four subsystems required for most of the ex situ processing systems. This volume covers the metal decontamination and sizing subsystem, soils processing subsystem, low-level waste subsystem, and retrieval subsystem

  4. Preliminary Systems Design Study assessment report

    International Nuclear Information System (INIS)

    Mayberry, J.L.; Quapp, W.J.; Feizollahi, F.; Del Signore, J.C.

    1991-07-01

    The System Design Study (SDS), part of the Waste Technology Development Department at Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic (TRU) waste stored at the Radioactive Waste Management Complex's (RWMC's) Subsurface Disposal Area (SDA) at INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. SDS resulted in the development of technology requirements including demonstration, testing and evaluation activities needed for implementing each concept. The SDS results are published in eight volumes. Volume 1 contains an executive summary. The SDS summary and analysis of results are presented in volume 2. Volumes 3 through 7 contain detailed descriptions of twelve system and four subsystem concepts. Volume 8 contains the appendices. 3 figs., 3 tabs

  5. Preliminary Systems Design Study assessment report

    International Nuclear Information System (INIS)

    Mayberry, J.L.; Quapp, W.J.; Feizollahi, F.; Del Signore, J.C.

    1991-07-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. The SDS results are published in eight volumes. Volume 1 contains an executive summary. The SDS summary and analysis of results are presented in Volume 2. Volumes 3 through 7 contain detailed descriptions of twelve system and four subsystem concepts. Volume 8 contains the appendixes. 23 refs., 23 figs., 16 tabs

  6. Exploring the membrane topology of prohormone convertase 1 in AtT20 Cells: in situ analysis by immunofluorescence microscopy [v1; ref status: indexed, http://f1000r.es/QFfyFd

    Directory of Open Access Journals (Sweden)

    Niamh X Cawley

    2012-08-01

    Full Text Available Prohormone convertase 1 (PC1 was previously characterized as a partially transmembrane protein in purified chromaffin granules of bovine adrenal medulla1. This was challenged with experiments on transfected PC1 in COS1 cells, a non-endocrine cell line2. To address this issue, we undertook to analyze its extraction properties in vitro and its immunocytochemical localization in situ in AtT20 cells, an endocrine cell line that expresses PC1. Most of the 87 kDa form of PC1 was resistant to carbonate extraction suggesting that it had properties of a transmembrane protein. Under semi-permeabilized conditions whereby only the plasma membrane was permeabilized, the carboxy-terminus of PC1 was specifically immunostained whereas the amino-terminus was not. These results indicate that the amino-terminus of PC1 was within the lumen of the Golgi and granules, and some of the C-terminus was exposed to the cytosol. Thus, endogenous PC1 can assume a transmembrane orientation in situ in AtT20 cells.

  7. Mācību saturs lasītprasmes attīstīšanai pamatizglītības pirmajā posmā

    OpenAIRE

    Tarasova, Renata

    2009-01-01

    Diplomdarbā tiek aplūkots mācību saturs lasītprasmes attīstīšanai pamatizglītības pirmajā posmā. Lasāmie teksti ir latviešu valodas apguves avots un vienlaicīgi arī iespēja apgūt apkārtējo pasauli. Diplomdarba mērķis ir pētīt un analizēt mācību saturu lasītprasmes attīstīšanai pamatizglītības pirmajā posmā, izstrādāt ieteikumus darba pilnveidošanai. Diplomdarbam ir trīs daļas. 1. daļā analizēta lasītprasmes būtības skaidrojums dažādās teorijās. Otrajā daļā analizēts latviešu valodas mācību...

  8. Viesnīcas "NB" izaugsmes iespēju izvērtējums Latvijas tūrisma attīstības kontekstā

    OpenAIRE

    Loseva, Aļina

    2014-01-01

    Maģistra darba tēma ir: Viesnīcas “NB” izaugsmes iespēju izvērtējums Latvijas tūrisma attīstības kontekstā. Maģistra darba mērķis ir, balstoties uz Latvijas tūrisma nozares vīziju, pamatvērtībām un stratēģiju, izpētīt viesnīcas “NB” attīstības stāvokli un izstrādāt izaugsmes stratēģiju. Darbā veikta Latvijas tūrisma un viesnīcu nozares analīze, viesnīcas “NB” finanšu analīze un tās rezultātu salīdzināšana ar nozares vidējiem rādītājiem, konkurentu analīze, viesu atsauksmju analīze, SVID an...

  9. A model system for DNA repair studies

    International Nuclear Information System (INIS)

    Lange, C.S.; Perlmutter, E.

    1984-01-01

    The search for the ''lethal lesion:'' which would yield a molecular explanation of biological survival curves led to attempts to correlate unrepaired DNA lesions with loss of reproductive integrity. Such studies have shown the crucial importance of DNA repair systems. The unrepaired DSB has been sought for such correlation, but in such study the DNA was too large, polydisperse, and/or structurally complex to permit precise measurement of break induction and repair. Therefore, an analog of higher order systems but with a genome of readily measurable size, is needed. Bacteriophage T4 is such an analog. Both its biological (PFU) and molecular (DNA) survival curves are exponentials. Its aerobic /sub PFU/D/sub 37///sub DNA/D/sub 37/ ratio, (410 +- 4.5Gy/540 +- 25 Gy) indicates that 76 +- 4% of lethality at low multiplicity infection (moi 1) the survival is greater than can be explained if the assumption of no parental DSB repair were valid. Both T4 and its host have DSB repair systems which can be studied by the infectious center method. Results of such studies are discussed

  10. Engineered Barrier System performance requirements systems study report. Revision 02

    International Nuclear Information System (INIS)

    Balady, M.A.

    1997-01-01

    This study evaluates the current design concept for the Engineered Barrier System (EBS), in concert with the current understanding of the geologic setting to assess whether enhancements to the required performance of the EBS are necessary. The performance assessment calculations are performed by coupling the EBS with the geologic setting based on the models (some of which were updated for this study) and assumptions used for the 1995 Total System Performance Assessment (TSPA). The need for enhancements is determined by comparing the performance assessment results against the EBS related performance requirements. Subsystem quantitative performance requirements related to the EBS include the requirement to allow no more than 1% of the waste packages (WPs) to fail before 1,000 years after permanent closure of the repository, as well as a requirement to control the release rate of radionuclides from the EBS. The EBS performance enhancements considered included additional engineered components as well as evaluating additional performance available from existing design features but for which no performance credit is currently being taken

  11. Engineered Barrier System performance requirements systems study report. Revision 02

    Energy Technology Data Exchange (ETDEWEB)

    Balady, M.A.

    1997-01-14

    This study evaluates the current design concept for the Engineered Barrier System (EBS), in concert with the current understanding of the geologic setting to assess whether enhancements to the required performance of the EBS are necessary. The performance assessment calculations are performed by coupling the EBS with the geologic setting based on the models (some of which were updated for this study) and assumptions used for the 1995 Total System Performance Assessment (TSPA). The need for enhancements is determined by comparing the performance assessment results against the EBS related performance requirements. Subsystem quantitative performance requirements related to the EBS include the requirement to allow no more than 1% of the waste packages (WPs) to fail before 1,000 years after permanent closure of the repository, as well as a requirement to control the release rate of radionuclides from the EBS. The EBS performance enhancements considered included additional engineered components as well as evaluating additional performance available from existing design features but for which no performance credit is currently being taken.

  12. Exoskeleton for Soldier Enhancement Systems Feasibility Study

    Energy Technology Data Exchange (ETDEWEB)

    Jansen, J.F.

    2000-09-28

    The development of a successful exoskeleton for human performance augmentation (EHPA) will require a multi-disciplinary systems approach based upon sound biomechanics, power generation and actuation systems, controls technology, and operator interfaces. The ability to integrate key components into a system that enhances performance without impeding operator mobility is essential. The purpose of this study and report are to address the issue of feasibility of building a fieldable EHPA. Previous efforts, while demonstrating progress and enhancing knowledge, have not approached the level required for a fully functional, fieldable system. It is doubtless that the technologies required for a successful exoskeleton have advanced, and some of them significantly. The question to be addressed in this report is have they advanced to the point of making a system feasible in the next three to five years? In this study, the key technologies required to successfully build an exoskeleton have been examined. The primary focus has been on the key technologies of power sources, actuators, and controls. Power sources, including internal combustion engines, fuel cells, batteries, super capacitors, and hybrid sources have been investigated and compared with respect to the exoskeleton application. Both conventional and non-conventional actuator technologies that could impact EHPA have been assessed. In addition to the current state of the art of actuators, the potential for near-term improvements using non-conventional actuators has also been addressed. Controls strategies, and their implication to the design approach, and the exoskeleton to soldier interface have also been investigated. In addition to these key subsystems and technologies, this report addresses technical concepts and issues relating to an integrated design. A recommended approach, based on the results of the study is also presented.

  13. Advanced nuclear systems. Review study; Fortgeschrittene Nuklearsysteme. Review Study

    Energy Technology Data Exchange (ETDEWEB)

    Liebert, Wolfgang; Glaser, Alexander; Pistner, Christoph [Interdisziplinaere Arbeitsgruppe Naturwissenschaft, Technik und Sicherheit (IANUS), Darmstadt University of Technology, Hochschulstrasse 10, D-64289 Darmstadt (Germany); Baehr, Roland; Hahn, Lothar [Institute for applied ecology (Oeko-Institut), Elisabethenstrasse 55-57, D-64283 Darmstadt (Germany)

    1999-04-01

    The task of this review study is to from provide an overview of the developments in the field of the various advanced nuclear systems, and to create the basis for more comprehensive studies of technology assessment. In an overview the concepts for advanced nuclear systems pursued worldwide are subdivided into eight subgroups. A coarse examination raster (set pattern) is developed to enable a detailed examination of the selected systems. In addition to a focus on enhanced safety features, further aspects are also taken into consideration, like the lowering of the proliferation risk, the enhancement of the economic competitiveness of the facilities and new usage possibilities (for instance concerning the relaxation of the waste disposal problem or the usage of alternative fuels to uranium). The question about the expected time span for realization and the discussion about the obstacles on the way to a commercially usable reactor also play a substantial role as well as disposal requirements as far as they can be presently recognized. In the central chapter of this study, the documentation of the representatively selected concepts is evaluated as well as existing technology assessment studies and expert opinions. In a few cases where this appears to be necessary, according technical literature, further policy advisory reports, expert statements as well as other relevant sources are taken into account. Contradictions, different assessments and dissents in the literature as well as a few unsettled questions are thus indicated. The potential of advanced nuclear systems with respect to economical and societal as well as environmental objectives cannot exclusively be measured by the corresponding intrinsic or in comparison remarkable technical improvements. The acceptability of novel or improved systems in nuclear technology will have to be judged by their convincing solutions for the crucial questions of safety, nuclear waste and risk of proliferation of nuclear weapons

  14. Multiple driver support systems and traffic safety. On behalf of the Ministry of Transport and Public Works, Transport and Traffic Research Division AVV.

    NARCIS (Netherlands)

    Heijer, T.

    1996-01-01

    This aim of this project is to investigate the effects of various applications of Advanced Traffic Telematics (ATT systems) on road safety. Although many of these systems are intended to make driving easier or safer, they can also change or extend the driver's task in such a way that safety is

  15. Intelligent system to study demographic evolution

    Science.gov (United States)

    Rodrigues, M. de Fatima; Ramos, Carlos; Henriques, Pedro R.

    1999-02-01

    With three centuries of existence, the study of population's behavior implies the manipulation of large amounts of incomplete and imprecise data with high dimensionality. By virtue of its multidisciplinary character, the work in demography involves at least historicists, statisticians and computer scientists/programmers. Moreover, successful demographic analysis requires qualified experts, who have succeeded in analysing data through many views and relate different sources of information, including their personal knowledge of the epoch or regions under study. In this paper, we present an intelligent system to study demographic evolution (ISSDE). This system has a module based on on-line analytical processing (OLAP), which permits conducting multiple analysis, combining many data dimensions. It has a deductive database system, which allows the execution of elaborated queries through the database. It has another module for date treatment (generalization and/or reduction); and, at last, a data mining module to discover nontrivial relations hidden within data. We discover the data treatment procedure with two phases: data generalization and data reduction. In data generalization, utilizing knowledge about concept hierarchies and relevance of data, aggregation of attribute values is performed. In the data reduction phase, rough set theory is applied to compute the minimal attribute set. We highlight the advantages of combining attribute value generalization with rough set theory, to find a subset of attributes that lets the mining process discover more useful patterns, by providing results from the application of the C5.0 algorithm in a demographic relational database.

  16. A Study of New Pulse Auscultation System

    Directory of Open Access Journals (Sweden)

    Ying-Yun Chen

    2015-04-01

    Full Text Available This study presents a new type of pulse auscultation system, which uses a condenser microphone to measure pulse sound waves on the wrist, captures the microphone signal for filtering, amplifies the useful signal and outputs it to an oscilloscope in analog form for waveform display and storage and delivers it to a computer to perform a Fast Fourier Transform (FFT and convert the pulse sound waveform into a heartbeat frequency. Furthermore, it also uses an audio signal amplifier to deliver the pulse sound by speaker. The study observed the principles of Traditional Chinese Medicine’s pulsing techniques, where pulse signals at places called “cun”, “guan” and “chi” of the left hand were measured during lifting (100 g, searching (125 g and pressing (150 g actions. Because the system collects the vibration sound caused by the pulse, the sensor itself is not affected by the applied pressure, unlike current pulse piezoelectric sensing instruments, therefore, under any kind of pulsing pressure, it displays pulse changes and waveforms with the same accuracy. We provide an acquired pulse and waveform signal suitable for Chinese Medicine practitioners’ objective pulse diagnosis, thus providing a scientific basis for this Traditional Chinese Medicine practice. This study also presents a novel circuit design using an active filtering method. An operational amplifier with its differential features eliminates the interference from external signals, including the instant high-frequency noise. In addition, the system has the advantages of simple circuitry, cheap cost and high precision.

  17. A study of new pulse auscultation system.

    Science.gov (United States)

    Chen, Ying-Yun; Chang, Rong-Seng

    2015-04-14

    This study presents a new type of pulse auscultation system, which uses a condenser microphone to measure pulse sound waves on the wrist, captures the microphone signal for filtering, amplifies the useful signal and outputs it to an oscilloscope in analog form for waveform display and storage and delivers it to a computer to perform a Fast Fourier Transform (FFT) and convert the pulse sound waveform into a heartbeat frequency. Furthermore, it also uses an audio signal amplifier to deliver the pulse sound by speaker. The study observed the principles of Traditional Chinese Medicine's pulsing techniques, where pulse signals at places called "cun", "guan" and "chi" of the left hand were measured during lifting (100 g), searching (125 g) and pressing (150 g) actions. Because the system collects the vibration sound caused by the pulse, the sensor itself is not affected by the applied pressure, unlike current pulse piezoelectric sensing instruments, therefore, under any kind of pulsing pressure, it displays pulse changes and waveforms with the same accuracy. We provide an acquired pulse and waveform signal suitable for Chinese Medicine practitioners' objective pulse diagnosis, thus providing a scientific basis for this Traditional Chinese Medicine practice. This study also presents a novel circuit design using an active filtering method. An operational amplifier with its differential features eliminates the interference from external signals, including the instant high-frequency noise. In addition, the system has the advantages of simple circuitry, cheap cost and high precision.

  18. Mini-Tn7 Insertion in Bacteria With Multiple glmS-Linked attTn7 Sites: Example Burkholderia Mallei ATCC 23344

    Science.gov (United States)

    2006-06-27

    Schweizer, H.P. Intrinsic resistance to inhibitors of fatty acid biosynthesis in Pseudomonas aeruginosa is due to efflux : application of a novel technique...for generation of unmarked chromosomal mutations for the study of efflux systems . Antimicrob. Agents Chemother. 42, 394–398 (1998). NATURE PROTOCOLS...negative bacteria and thereby facilitate the manipulation of many organisms for which few genetic systems are available. These vectors, when provided

  19. Inadequacy of clinical and/or laboratory criteria for the diagnosis of lupus vulgaris, re-infection cutaneous tuberculosis: fallout/implication of 6 weeks of anti-tubular therapy (ATT) as a precise diagnostic supplement to complete the scheduled regimen.

    Science.gov (United States)

    Sehgal, Virendra N; Sardana, Kabir; Sharma, Sonal

    2008-01-01

    The morphological diagnosis of the plaque form of lupus vulgaris was made on the basis of distinct clinical features. An endeavor to supplement this diagnosis was made through laboratory investigations comprising total differential leukocyte count,erythrocyte sedimentation rate (ESR), immunoglobulin M (IgM), and polymerase chain reaction (PCR); the results of which were largely ambiguous. Regimented anti-tubular therapy (ATT) was utilized to arrive at the diagnosis. A perceptible regression of the lesions over the course of 6 weeks was remarkably beneficial to completing the treatment subsequently. ATT seems to bea feasible and well-conceived tool in the diagnosis of lupus vulgaris tuberculosis verrucosa cutis and pediatric scleroderma.

  20. Exploratory studies on some electrochemical cell systems

    Science.gov (United States)

    Chaudhuri, Srikumar; Guha, D.

    Exploratory studies were conducted on cell systems with different metal anodes, and iodine and sulphur mixed with graphite powder in a polymer matrix as cathodes, using different electrolytes in non-aqueous and aqueous media as ionic charge carriers. The electrical conductance of the electrolyte solutions in aqueous and non-aqueous solvents, the open circuit voltage (OCV) and short circuit current (SCC) for the different cell systems were measured. To date, the non-aqueous solvents used in our studies were dimethylformamide, formamide, dioxan, and nitrobenzene, and the electrolytes used were potassium iodide, caustic potash, cetyltrimethylammonium bromide (CTAB), sodium lauryl sulphate (SLS) and calcium chloride. These electrolytes were used in both non-aqueous and aqueous media. In general, aqueous electrolyte solutions gave a better performance than non-aqueous electrolyte solutions. Of the aqueous electrolytes, the highest conductance was shown by potassium chloride solution in water (conductance=0.0334 mho). However, the best OCV and SCC were shown by aluminium as anode and iodine as cathode with a saturated solution of caustic potash in water. The OCV was 1.85 V and the SCC was 290 mA cm -2. The highest conductance among the non-aqueous systems was shown by caustic potash in formamide. (Conductance=0.013 mho.) The best OCV and SCC, however, were shown by a zinc anode and iodine cathode with saturated potassium chloride in formamide, having an OCV of 1.55 V and an SCC of 150 mA cm -2. Further studies are in progress to obtain detailed performance data and recharging characteristics of some of the more promising systems reported here.

  1. The NOAA Satellite Observing System Architecture Study

    Science.gov (United States)

    Volz, Stephen; Maier, Mark; Di Pietro, David

    2016-01-01

    NOAA is beginning a study, the NOAA Satellite Observing System Architecture (NSOSA) study, to plan for the future operational environmental satellite system that will follow GOES and JPSS, beginning about 2030. This is an opportunity to design a modern architecture with no pre-conceived notions regarding instruments, platforms, orbits, etc. The NSOSA study will develop and evaluate architecture alternatives to include partner and commercial alternatives that are likely to become available. The objectives will include both functional needs and strategic characteristics (e.g., flexibility, responsiveness, sustainability). Part of this study is the Space Platform Requirements Working Group (SPRWG), which is being commissioned by NESDIS. The SPRWG is charged to assess new or existing user needs and to provide relative priorities for observational needs in the context of the future architecture. SPRWG results will serve as input to the process for new foundational (Level 0 and Level 1) requirements for the next generation of NOAA satellites that follow the GOES-R, JPSS, DSCOVR, Jason-3, and COSMIC-2 missions.

  2. NEXT GENERATION GAS TURBINE (NGGT) SYSTEMS STUDY

    Energy Technology Data Exchange (ETDEWEB)

    Unknown

    2001-12-05

    Building upon the 1999 AD Little Study, an expanded market analysis was performed by GE Power Systems in 2001 to quantify the potential demand for an NGGT product. This analysis concluded that improvements to the US energy situation might be best served in the near/mid term (2002-2009) by a ''Technology-Focused'' program rather than a specific ''Product-Focused'' program. Within this new program focus, GEPS performed a parametric screening study of options in the three broad candidate categories of gas turbines: aero-derivative, heavy duty, and a potential hybrid combining components of the other two categories. GEPS's goal was to determine the best candidate systems that could achieve the DOE PRDA expectations and GEPS's internal design criteria in the period specified for initial product introduction, circa 2005. Performance feasibility studies were conducted on candidate systems selected in the screening task, and critical technology areas were identified where further development would be required to meet the program goals. DOE PRDA operating parameters were found to be achievable by 2005 through evolutionary technology. As a result, the study was re-directed toward technology enhancements for interim product introductions and advanced/revolutionary technology for potential NGGT product configurations. Candidate technologies were identified, both evolutionary and revolutionary, with a potential for possible development products via growth step improvements. Benefits were analyzed from two perspectives: (1) What would be the attributes of the top candidate system assuming the relevant technologies were developed and available for an NGGT market opportunity in 2009/2010; and (2) What would be the expected level of public benefit, assuming relevant technologies were incorporated into existing new and current field products as they became available. Candidate systems incorporating these technologies were assessed as

  3. Robust control systems theory and case studies

    CERN Document Server

    Mackenroth, Uwe

    2004-01-01

    "Robust Control Systems" gives a self-contained introduction to modern Control Theory. It thus adds a textbook to the existing research-oriented literature on Robust Control. The author lays emphasis on the modern aspects of the design of controllers with prescribed performance and robustness properties. Different to the classical engineering approach, a rigorous mathematical treatment is essential for the full understanding and applicability of the modern methods such as H2 or H8 control or methods based on the structured singular value µ. Nevertheless, no prior knowledge of Control Theory is required as the classical fundamentals are introduced within the first few chapters. Subsequently a large part of the text provides elementary examples and industrial case studies, which are developed in full detail to show how modern methods can be applied to advanced problems. They make intensive use of MATLAB, especially the Control Systems Toolbox and the µ-Analysis and Synthesis Toolbox.

  4. Laser fusion hybrid reactor systems study

    Energy Technology Data Exchange (ETDEWEB)

    1976-07-01

    The work was performed in three phases. The first phase included a review of the many possible laser-reactor-blanket combinations and resulted in the selection of a ''demonstration size'' 500 MWe plant for further study. A number of fast fission blankets using uranium metal, uranium-molybdenum alloy, and uranium carbide as fuel were investigated. The second phase included design of the reactor vessel and internals, heat transfer system, tritium processing system, and the balance of plant, excluding the laser building and equipment. A fuel management scheme was developed, safety considerations were reviewed, and capital and operating costs were estimated. Costs developed during the second phase were unexpectedly high, and a thorough review indicated considerable unit cost savings could be obtained by scaling the plant to a larger size. Accordingly, a third phase was added to the original scope, encompassing the redesign and scaling of the plant from 500 MWe to 1200 MWe (less lasers).

  5. HTGR-GT systems optimization studies

    International Nuclear Information System (INIS)

    Kammerzell, L.L.; Read, J.W.

    1980-06-01

    The compatibility of the inherent features of the high-temperature gas-cooled reactor (HTGR) and the closed-cycle gas turbine combined into a power conversion system results in a plant with characteristics consistent with projected utility needs and national energy goals. These characteristics are: (1) plant siting flexibility; (2) high resource utilization; (3) low safety risks; (4) proliferation resistance; and (5) low occupational exposure for operating and maintenance personnel. System design and evaluation studies on dry-cooled intercooled and nonintercooled commercial plants in the 800-MW(e) to 1200-MW(e) size range are described, with emphasis on the sensitivity of plant design objectives to variation of component and plant design parameters. The impact of these parameters on fuel cycle, fission product release, total plant economics, sensitivity to escalation rates, and plant capacity factors is examined

  6. Optics study of liquid scintillation counting systems

    International Nuclear Information System (INIS)

    Duran Ramiro, M. T.; Garcia-Torano, E.

    2005-01-01

    Optics is a key issue in the development of any liquid scintillation counting (LSC) system. Light emission in the scintillating solution, transmission through the vial and reflector design are some aspects that need to be considered in detail. This paper describes measurements and calculations carried out to optimise these factors for the design of a new family of LSC counters. Measurements of the light distribution emitted by a scintillation vial were done by autoradiographs of cylindrical vials made of various materials and results were compared to those obtained by direct measurements of the light distribution made by scanning the vial with a photomultiplier tube. Calculations were also carried out to study the light transmission in the vial and the optimal design of the reflector for a system with one photomultiplier tube. (Author)

  7. Information management system study results. Volume 1: IMS study results

    Science.gov (United States)

    1971-01-01

    The information management system (IMS) special emphasis task was performed as an adjunct to the modular space station study, with the objective of providing extended depth of analysis and design in selected key areas of the information management system. Specific objectives included: (1) in-depth studies of IMS requirements and design approaches; (2) design and fabricate breadboard hardware for demonstration and verification of design concepts; (3) provide a technological base to identify potential design problems and influence long range planning (4) develop hardware and techniques to permit long duration, low cost, manned space operations; (5) support SR&T areas where techniques or equipment are considered inadequate; and (6) permit an overall understanding of the IMS as an integrated component of the space station.

  8. System description of the Repository-Only System for the FY 1990 systems integration program studies

    International Nuclear Information System (INIS)

    McKee, R.W.; Young, J.R.; Konzek, G.J.

    1991-07-01

    This document provides both functional and physical descriptions of a conceptual high-level waste management system defined as a Repository-Only System. Its purpose is to provide a basis for required system computer modeling and system studies initiated in FY 1990 under the Systems Integration Program of the US Department of Energy's (DOE) Office of Civilian Radioactive Waste Management (OCRWM). The Repository-Only System is designed to accept 3000 MTU per year of spent fuel and 400 equivalent MTU per year of high-level wastes disposal in the geologic repository. This document contains both functional descriptions of the processes in the waste management system and physical descriptions of the equipment and facilities necessary for performance of those processes. These descriptions contain the level of detail needed for the projected systems analysis studies. The Repository-Only System contains all system components, from the waste storage facilities of the waste generators to the underground facilities for final disposal of the wastes. The major facilities in the system are the waste generator waste storage facilities, a repository facility that packages the wastes and than emplaces them in the geologic repository, and the transportation equipment and facilities for transporting the wastes between these major facilities. 18 refs., 39 figs

  9. Studies of natural analogues and geological systems

    International Nuclear Information System (INIS)

    Brandberg, F.; Grundfelt, B.; Hoeglund, L.; Skagius K.; Karlsson, F.; Smellie, J.

    1993-04-01

    This review has involved studies of natural analogues and natural geological systems leading to the identification and quantification of processes and features of importance to the performance and safety of repositories for radioactive waste. The features and processes selected for the study comprise general geochemical issues related to the performance of the near- and far-field, the performance and durability of construction materials and the effects of glaciation. For each of these areas a number of potentially important processes for repository performance have been described, and evidence for their existence, as well as quantification of parameters of models describing the processes have been sought from major natural analogue studies and site investigations. The review has aimed at covering a relatively broad range of issues at the expense of in-depth analysis. The quantitative data presented are in most cases compilations of data from the literature; in a few cases results of evaluations made within the current project are included

  10. Study on the performance of airlift system

    International Nuclear Information System (INIS)

    Wu Dong; Yan Guanchao; Cheng Bobo; Xie Lianshan; Xie Zhiqing

    2012-01-01

    Airlifts are used as one of the most important liquid transportation equipment in the Spent Fuel Intermediate Test Plan of China. This study have carried out many basic experiments on the fluid transporting performances of air life systems, and obtained abundant application experiences. The experiment results indicate that the inlet size and com- pressed-air pressure of the air life has less impact on the liquid flow rate and its stability, whereas the pipe diameter, air flow rate, and immersion rate has more significant effect. Moreover, an on-line calibration method is developed to check the flow stability, so as to ensure the safety and reliability of the process operating. (authors)

  11. Tokamak power systems studies, FY 1985

    Energy Technology Data Exchange (ETDEWEB)

    Baker, C.C.; Brooks, J.N.; Ehst, D.A.; Smith, D.L.; Sze, D.K.

    1985-12-01

    The Tokamak Power System Studies (TPSS) at ANL in FY-1985 were devoted to exploring innovative design concepts which have the potential for making substantial improvements in the tokamak as a commercial power reactor. Major objectives of this work included improved reactor economics, improved environmental and safety features, and the exploration of a wide range of reactor plant outputs with emphasis on reduced plant sizes compared to STARFIRE. The activities concentrated on three areas: plasma engineering, impurity control, and blanket/first wall/shield technology. 205 refs., 125 figs., 107 tabs.

  12. CISA Certified Information Systems Auditor : study guide

    CERN Document Server

    Cannon, David L

    2011-01-01

    The industry-leading study guide for the CISA exam, fully updated. More than 27,000 IT professionals take the Certified Information Systems Auditor exam each year. SC Magazine lists the CISA as the top certification for security professionals. Compliances, regulations, and best practices for IS auditing are updated twice a year, and this is the most up-to-date book available to prepare aspiring CISAs for the next exam.: CISAs are among the five highest-paid IT security professionals; more than 27,000 take the exam each year and the numbers are growing; Standards are updated twice a year, and t

  13. Studies of Gas Disks in Binary Systems

    Science.gov (United States)

    de Val-Borro, Miguel

    There are over 300 exoplanets detected through radial velocity surveys and photometric studies showing a tremendous variety of masses, compositions and orbital parameters. Understanding the way these planets formed and evolved within the circumstellar disks they were initially embedded in is a crucial issue. In the first part of this thesis we study the physical interaction between a gaseous protoplanetary disk and an embedded planet using numerical simulations. In order to trust the results from simulations it is important to compare different methods. However, the standard test problems for hydrodynamic codes differ considerably from the case of a protoplanetary disk interacting with an embedded planet. We have carried out a code comparison in which the problem of a massive planet in a protoplanetary disk was studied with various numerical schemes. We compare the surface density, potential vorticity and azimuthally averaged density profiles at several times. There is overall good agreement between our codes for Neptune and Jupiter-sized planets. We performed simulations for each planet in an inviscid disk and including physical viscosity. The surface density profiles agree within about 5% for the grid-based schemes while the particle codes have less resolution in the low density regions and weaker spiral wakes. In Paper II, we study hydrodynamical instabilities in disks with planets. Vortices are generated close to the gap in our numerical models in agreement with the linear modal analysis. The vortices exert strong perturbations on the planet as they move along the gap and can change its migration rate. In addition, disk viscosity can be modified by the presence of vortices. The last part of this thesis studies the mass transfer in symbiotic binaries and close T Tauri binary systems. Our simulations of gravitationally focused wind accretion in binary systems show the formation of stream flows and enhanced accretion rates onto the compact component.

  14. Intelligent Robotic Systems Study (IRSS), phase 3

    Science.gov (United States)

    1991-01-01

    This phase of the Intelligent Robotic Systems Study (IRSS) examines some basic dynamics and control issues for a space manipulator attached to its worksite through a compliant base. One example of this scenario is depicted, which is a simplified, planar representation of the Flight Telerobotic Servicer (FTS) Development Test Flight 2 (DTF-2) experiment. The system consists of 4 major components: (1) dual FTS arms to perform dextrous tasks; (2) the main body to house power and electronics; (3) an Attachment Stabilization and Positioning Subsystem (ASPS) to provide coarse positioning and stabilization of the arms, and (4) the Worksite Attachment Mechanism (WAM) which anchors the system to its worksite, such as a Space Station truss node or Shuttle bay platform. The analysis is limited to the DTF-2 scenario. The goal is to understand the basic interaction dynamics between the arm, the positioner and/or stabilizer, and the worksite. The dynamics and controls simulation model are described. Analysis and simulation results are presented.

  15. Large Coil Program magnetic system design study

    International Nuclear Information System (INIS)

    Moses, S.D.; Johnson, N.E.

    1977-01-01

    The primary objective of the Large Coil Program (LCP) is to demonstrate the reliable operation of large superconducting coils to provide a basis for the design principles, materials, and fabrication techniques proposed for the toroidal magnets for the THE NEXT STEP (TNS) and other future tokamak devices. This paper documents a design study of the Large Coil Test Facility (LCTF) in which the structural response of the Toroidal Field (TF) Coils and the supporting structure was evaluated under simulated reactor conditions. The LCP test facility structural system consists of six TF Coils, twelve coil-to-coil torsional restraining beams (torque rings), a central bucking post with base, and a Pulse Coil system. The NASTRAN Finite Element Structural Analysis computer Code was utilized to determine the distribution of deflections, forces, and stresses for each of the TF Coils, torque rings, and the central bucking post. Eleven load conditions were selected to represent probable test operations. Pulse Coils suspended in the bore of the test coil were energized to simulate the pulsed field environment characteristic of the TNS reactor system. The TORMAC Computer Code was utilized to develop the magnetic forces in the TF Coils for each of the eleven loading conditions examined, with or without the Pulse Coils energized. The TORMAC computer program output forces were used directly as input load conditions for the NASTRAN analyses. Results are presented which demonstrate the reliability of the LCTF under simulated reactor operating conditions

  16. Cargo transportation by airships: A systems study

    Science.gov (United States)

    Huang, C. J.; Dalton, C.

    1976-01-01

    A systems engineering study of a lighter than air airship transportation system was conducted. The feasibility of the use of airships in hauling cargo was demonstrated. Social, legal, environmental and political factors were considered as well as the technical factors necessary to design an effective airship transportation system. In order to accomplish an effective airship transportation program two phases of implementation were recommended. Phase I would involve a fleet of rigid airships of 3.5 million cubic feet displacement capable of carrying 25 tons of cargo internal to the helium-filled gas bag. The Phase I fleet would demonstrate the economic and technical feasibility of modern-day airships while providing a training capability for the construction and operation of larger airships. The Phase II portion would be a fleet of rigid airships of 12 million cubic feet displacement capable of carrying a cargo of 100 tons a distance of 2,000 miles at a cruising speed of 60 mph. An economic analysis is given for a variety of missions for both Phase I and Phase II airships.

  17. DDACE cogeneration systems : 10 case studies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-07-01

    DDACE Power Systems are experts in green energy power generation and provide solutions that deal with waste and industrial by-products. The company develops practical energy solutions that address environmental and financial concerns facing both industrial and municipal customers. The following 10 case studies are examples of the installations that DDACE Power Systems have completed in recent years: (1) a combined heat and emergency power installation on the roof of a 19 storey apartment building on Bloor Street in Toronto, Ontario. The cogeneration package provides electricity and heat to the entire building, replacing an old diesel generator, (2) a combined heat and emergency power installation at the Villa Colombo extended care facility in Vaughan, Ontario. The cogeneration system provides heat and power to the building, as well as emergency power, (3) emergency standby power with demand response capabilities at Sobeys Distribution Warehouse in Vaughan, Ontario. The primary purpose of the 2.4 MW low emission, natural gas fuelled emergency standby generator is to provide emergency power to the building in the event of a grid failure, (4) a dual fuel combined heat and power installation at the Queensway Carleton Hospital in Ottawa, Ontario that provides electricity, hot water and steam to all areas of the hospital, (5) a tri-generation installation at the Ontario Police College in Aylmer, Ontario which provides power and heat to the building as well as emergency power in the event of a grid failure. An absorption chiller provides cooling in the summer and an exhaust emission control system reduces NOx emissions, (6) a biomass gasification installation at Nexterra Energy in Kamloops, British Columbia. The 239 kW generator is fueled by synthesis gas, (7) biogas utilization at Fepro Farms in Cobden, Ontario for treatment of the facility's waste products. The biogas plant uses cow manure, as well as fats, oil and grease from restaurants to produce electricity and

  18. Infrared Imaging System for Studying Brain Function

    Science.gov (United States)

    Mintz, Frederick; Mintz, Frederick; Gunapala, Sarath

    2007-01-01

    A proposed special-purpose infrared imaging system would be a compact, portable, less-expensive alternative to functional magnetic resonance imaging (fMRI) systems heretofore used to study brain function. Whereas a typical fMRI system fills a large room, and must be magnetically isolated, this system would fit into a bicycle helmet. The system would include an assembly that would be mounted inside the padding in a modified bicycle helmet or other suitable headgear. The assembly would include newly designed infrared photodetectors and data-acquisition circuits on integrated-circuit chips on low-thermal-conductivity supports in evacuated housings (see figure) arranged in multiple rows and columns that would define image coordinates. Each housing would be spring-loaded against the wearer s head. The chips would be cooled by a small Stirling Engine mounted contiguous to, but thermally isolated from, the portions of the assembly in thermal contact with the wearer s head. Flexible wires or cables for transmitting data from the aforementioned chips would be routed to an integrated, multichannel transmitter and thence through the top of the assembly to a patch antenna on the outside of the helmet. The multiple streams of data from the infrared-detector chips would be sent to a remote site, where they would be processed, by software, into a three-dimensional display of evoked potentials that would represent firing neuronal bundles and thereby indicate locations of neuronal activity associated with mental or physical activity. The 3D images will be analogous to current fMRI images. The data would also be made available, in real-time, for comparison with data in local or internationally accessible relational databases that already exist in universities and research centers. Hence, this system could be used in research on, and for the diagnosis of response from the wearer s brain to physiological, psychological, and environmental changes in real time. The images would also be

  19. High power communication satellites power systems study

    International Nuclear Information System (INIS)

    Josloff, A.T.; Peterson, J.R.

    1994-01-01

    This paper discusses a DOE-funded study to evaluate the commercial attractiveness of high power communication satellites and assesses the attributes of both conventional photovoltaic and reactor power systems. This study brings together a preeminent US Industry/Russian team to cooperate on the role of high power communication satellites in the rapidly expanding communications revolution. These high power satellites play a vital role in assuring availability of universally accessible, wide bandwidth communications, for high definition TV, super computer networks and other services. Satellites are ideally suited to provide the wide bandwidths and data rates required and are unique in the ability to provide services directly to the users. As new or relocated markets arise, satellites offer a flexibility that conventional distribution services cannot match, and it is no longer necessary to be near population centers to take advantage of the telecommunication revolution. The geopolitical implications of these substantially enhanced communications capabilities will be significant

  20. West Valley waste removal system study

    International Nuclear Information System (INIS)

    Janicek, G.P.

    1981-04-01

    This study addresses the specific task of removing high-level wastes from underground tanks at Western New York Nuclear Center and delivering them to an onsite waste solidification plant. It begins with a review of the design and construction features of the waste storage tanks pertinent to the waste removal task with particular emphasis on the unique and complex tank internals which severely complicate the task of removal. It follows with a review of tank cleaning techniques used and under study at both Hanford and Savannah River and previous studies proposing the use of these techniques at West Valley. It concludes from these reviews that existing techniques are not directly transferable to West Valley and that a new approach is required utilizing selected feature and attributes from existing methodology. The study also concludes, from an investigation of the constraints imposed by the processing facility, that waste removal will be intermittent, requiring batch transfer over the anticipated 3 years of processing operations. Based on these reviews and conclusions, the study proposes that the acid waste be processed first and that one of the 15,000-gallon acid tanks then be used for batch feeding the neutralized waste. The proposed system would employ commercially available pumping equipment to transfer the wastes from the batch tank to processing via existing process piping. A commercially available mixed-flow pump and eight turbine pumps would homogenize the neutralized waste in conjunction with eight custom-fabricated sluicers for periodic transfer to the batch tank

  1. Waste package performance allocation system study report

    International Nuclear Information System (INIS)

    Memory, R.D.

    1994-01-01

    The Waste Package Performance Allocation system study was performed in order to provide a technical basis for the selection of the waste package period of substantially complete containment and its resultant contribution to the overall total system performance. This study began with a reference case based on the current Mined Geologic Disposal System (MGDS) baseline design and added a number of alternative designs. The waste package designs were selected from the designs being considered in detail during Advanced Conceptual Design (ACD). The waste packages considered were multi-barrier packages with a 0.95 cm Alloy 825 inner barrier and a 10, 20, or 45 cm thick carbon steel outer barrier. The waste package capacities varied from 6 to 12 to 21 Pressurized Water Reactor (PWR) fuel assemblies. The vertical borehole and in-drift emplacement modes were also considered, as were thermal loadings of 25, 57, and 114 kW/acre. The repository cost analysis indicated that the 21 PWR in-drift emplacement mode option with the 10 cm and 20 cm outer barrier thicknesses are the least expensive and that the 12 PWR in-drift case has approximately the same cost as the 6 PWR vertical borehole. It was also found that the cost increase from the 10 cm outer barrier waste package to the 20 cm waste package was less per centimeter than the increase from the 20 cm outer barrier waste package to the 45 cm outer barrier waste package. However, the repository cost was nearly linear with the outer barrier thickness for the 21 PWR in-drift case. Finally, corrosion rate estimates are provided and the relationship of repository cost versus waste package lifetime is discussed as is cumulative radionuclide release from the waste package and to the accessible environment for time periods of 10,000 years and 100,000 years

  2. Plasma confinement studies in open systems

    Science.gov (United States)

    Yatsu, Kiyoshi

    1999-03-01

    Studies in open systems in the world are reviewed from viewpoints of the potential confinement and magnetohydrodynamic (MHD) stability. The tandem mirror GAMMA 10 has shown the potential confinement of a high-ion-temperature plasma from an analysis of the time evolution of end-loss ion current and end-loss ion energy distributions. The central cell density was increased by 50% by the potential confinement. In the HIEI tandem mirror H-mode-like phenomena were observed with an increase in density and diamagnetic signal in a limiter biasing experiment. Potential formation phenomena in plasmas are studied by 0741-3335/41/3A/024/img1-like Upgrade under different magnetic field configurations and plasma conditions. The fully axisymmetric tandem mirror AMBAL-M is under construction and its end mirror system has been assembled. Heating experiments of a plasma gun produced plasma by neutral beam injection and ICRF heating are in progress. The gas dynamic trap (GDT) experiment has successfully produced an MHD-stable high-temperature, high-density plasma. In GOL-3-II, a high-density plasma with several 100 eV temperature is created by powerful relativistic electron beam injection. Construction of HANBIT has been completed and experiments on plasma production and ICRF heating have begun.

  3. System Study: Emergency Power System 1998-2014

    Energy Technology Data Exchange (ETDEWEB)

    Schroeder, John Alton [Idaho National Lab. (INL), Idaho Falls, ID (United States). Risk Assessment and Management Services Dept.

    2015-12-01

    This report presents an unreliability evaluation of the emergency power system (EPS) at 104 U.S. commercial nuclear power plants. Demand, run hours, and failure data from fiscal year 1998 through 2014 for selected components were obtained from the Institute of Nuclear Power Operations (INPO) Consolidated Events Database (ICES). The unreliability results are trended for the most recent 10 year period while yearly estimates for system unreliability are provided for the entire active period. An extremely statistically significant increasing trend was observed for EPS system unreliability for an 8-hour mission. A statistically significant increasing trend was observed for EPS system start-only unreliability.

  4. Natural History and Factors Associated with Early and Delayed Mortality in HIV-Infected Patients Treated of Tuberculosis under Directly Observed Treatment Short-Course Strategy: A Prospective Cohort Study in India

    Directory of Open Access Journals (Sweden)

    Gerardo Alvarez-Uria

    2012-01-01

    Full Text Available Despite the impressive global results of DOTS in India, the effectiveness of DOTS for the treatment of tuberculosis in HIV-infected patients is not well known. This is an observational prospective cohort study performed in Anantapur District, Andhra Pradesh, India. The study included 1000 DOTS antituberculosis treatment (ATT episodes and 840 person-years. CD4 lymphocyte count was below 200 cells/mm3 in 77% of the cases, and 21% were retreatments. Two thirds were presented with extrapulmonary tuberculosis, and the most common form of extrapulmonary tuberculosis was tuberculous meningitis followed by pleuritis, abdominal tuberculosis, and lymphadenitis. Cumulative incidence of mortality was 16%, 26%, 39%, and 46% at 1, 3, 12, and 24 months, respectively. Factors associated with three-month (early mortality were being homeless, having low CD4+ lymphocyte count, having tuberculous meningitis, belonging to a socially disadvantaged community, having more than 35 years, and being on an antiretroviral therapy at the moment of initiating the ATT. Factors associated with delayed mortality were having low CD4+ lymphocyte count, belonging to a socially disadvantaged community, receiving a category II ATT because of a previous episode of ATT and having acid fast bacilli in sputum before the ATT initiation. These findings indicate that there is an urgent need to improve the treatment of tuberculosis in HIV-infected patients in India.

  5. Moessbauer effect: Study of disordered magnetic systems

    International Nuclear Information System (INIS)

    Chang, Xiao Sha.

    1989-01-01

    This dissertation describes Moessbauer spectroscopy studies of two chemically disordered binary, crystalline alloys having the composition A 1-x B x . Both systems are random 3d Heisenberg ferromagnets. In each case both A and B atoms carry a magnetic moment. The first study concerns a Moessbauer absorber experiment on Fe 1-x V x , in which the disorder in the critical region is of the annealed random exchange type. To eliminate the effect of concentration inhomogeneity, the measurement of the critical exponent β was done on the alloy with x = 0.125, where dT C /dx = 0, yielding β = 0.362(8) over the reduced temperature range 1.4 x 10 -3 -1 . This result confirms the theoretical prediction that the annealed disorder is irrelevant to critical behavior in this case. As expected the critical exponent β is consistent with the expectation for the 3d Heisenberg model as well as the measured exponent of pure Fe. The second study involves a Moessbauer source experiment on 57 CoPd 0.80 Co 0.20 , in which disorder is of the quenched random exchange type perturbed by a very weak random anisotropy interaction. The critical exponent β deduced over the range 1 x 10 -2 -1 is 0.385(20), and is consistent with the theoretical prediction for quenched disordered 3d Heisenberg systems: the disorder is irrelevant to the critical behavior. However, because of the restricted range of reduced temperature, the result is insufficiently asymptotic to serve as a conclusive test of the theory. Outside the critical region the distribution of Fe 57 hyperfine field in Pd 0.80 Co 0.20 is observed to have an anomalous temperature dependence characterized by a linear increase in the width of the field distribution for T/T C ≥ 0.6

  6. Implementing Business Intelligence System - Case Study

    Directory of Open Access Journals (Sweden)

    Yasser AL-HADAD

    2016-08-01

    Full Text Available Understanding and analysis data is essential for making decision within a system. Any analytical tasks can be implemented directly by the transactional system but it becomes more difficult as the transactional system grows. Analytical systems and their extension appear as a solution for complex and large datasets. We think that it's time for medium companies to get the benefit from such systems as analytical systems become more variant and in hand for every possible user. In this paper, we propose an architecture of analytical system that can adapt and integrate with existent transactional system of timber export company. The proposed analytical system should have the ability of implementing the tasks required by the decision makers of the system. Also, we try to explore the ability of SQL server of implementing our proposed architecture.

  7. Conceptual study on advanced PWR system

    International Nuclear Information System (INIS)

    Bae, Yoon Young; Chang, M. H.; Yu, K. J.; Lee, D. J.; Cho, B. H.; Kim, H. Y.; Yoon, J. H.; Lee, Y. J.; Kim, J. P.; Park, C. T.; Seo, J. K.; Kang, H. S.; Kim, J. I.; Kim, Y. W.; Kim, Y. H.

    1997-07-01

    In this study, the adoptable essential technologies and reference design concept of the advanced reactor were developed and related basic experiments were performed. 1) Once-through Helical Steam Generator: a performance analysis computer code for heli-coiled steam generator was developed for thermal sizing of steam generator and determination of thermal-hydraulic parameters. 2) Self-pressurizing pressurizer : a performance analysis computer code for cold pressurizer was developed. 3) Control rod drive mechanism for fine control : type and function were surveyed. 4) CHF in passive PWR condition : development of the prediction model bundle CHF by introducing the correction factor from the data base. 5) Passive cooling concepts for concrete containment systems: development of the PCCS heat transfer coefficient. 6) Steam injector concepts: analysis and experiment were conducted. 7) Fluidic diode concepts : analysis and experiment were conducted. 8) Wet thermal insulator : tests for thin steel layers and assessment of materials. 9) Passive residual heat removal system : a performance analysis computer code for PRHRS was developed and the conformance to EPRI requirement was checked. (author). 18 refs., 55 tabs., 137 figs

  8. Conceptual study on advanced PWR system

    Energy Technology Data Exchange (ETDEWEB)

    Bae, Yoon Young; Chang, M. H.; Yu, K. J.; Lee, D. J.; Cho, B. H.; Kim, H. Y.; Yoon, J. H.; Lee, Y. J.; Kim, J. P.; Park, C. T.; Seo, J. K.; Kang, H. S.; Kim, J. I.; Kim, Y. W.; Kim, Y. H.

    1997-07-01

    In this study, the adoptable essential technologies and reference design concept of the advanced reactor were developed and related basic experiments were performed. (1) Once-through Helical Steam Generator: a performance analysis computer code for heli-coiled steam generator was developed for thermal sizing of steam generator and determination of thermal-hydraulic parameters. (2) Self-pressurizing pressurizer : a performance analysis computer code for cold pressurizer was developed. (3) Control rod drive mechanism for fine control : type and function were surveyed. (4) CHF in passive PWR condition : development of the prediction model bundle CHF by introducing the correction factor from the data base. (5) Passive cooling concepts for concrete containment systems: development of the PCCS heat transfer coefficient. (6) Steam injector concepts: analysis and experiment were conducted. (7) Fluidic diode concepts : analysis and experiment were conducted. (8) Wet thermal insulator : tests for thin steel layers and assessment of materials. (9) Passive residual heat removal system : a performance analysis computer code for PRHRS was developed and the conformance to EPRI requirement was checked. (author). 18 refs., 55 tabs., 137 figs.

  9. Building Energy Information Systems: User Case Studies

    Energy Technology Data Exchange (ETDEWEB)

    Granderson, Jessica; Piette, Mary Ann; Ghatikar, Girish

    2010-03-22

    Measured energy performance data are essential to national efforts to improve building efficiency, as evidenced in recent benchmarking mandates, and in a growing body of work that indicates the value of permanent monitoring and energy information feedback. This paper presents case studies of energy information systems (EIS) at four enterprises and university campuses, focusing on the attained energy savings, and successes and challenges in technology use and integration. EIS are broadly defined as performance monitoring software, data acquisition hardware, and communication systems to store, analyze and display building energy information. Case investigations showed that the most common energy savings and instances of waste concerned scheduling errors, measurement and verification, and inefficient operations. Data quality is critical to effective EIS use, and is most challenging at the subsystem or component level, and with non-electric energy sources. Sophisticated prediction algorithms may not be well understood but can be applied quite effectively, and sites with custom benchmark models or metrics are more likely to perform analyses external to the EIS. Finally, resources and staffing were identified as a universal challenge, indicating a need to identify additional models of EIS use that extend beyond exclusive in-house use, to analysis services.

  10. Building energy information systems. User case studies

    Energy Technology Data Exchange (ETDEWEB)

    Granderson, J.; Piette, M.A.; Ghatikar, G. [Lawrence Berkeley, National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)

    2011-01-15

    Measured energy performance data are essential to national efforts to improve building efficiency, as evidenced in recent benchmarking mandates, and in a growing body of work that indicates the value of permanent monitoring and energy information feedback. This paper presents case studies of energy information systems (EIS) at four enterprises and university campuses, focusing on the attained energy savings, and successes and challenges in technology use and integration. EIS are broadly defined as performance monitoring software, data acquisition hardware, and communication systems to store, analyze, and display building energy information. Case investigations showed that the most common energy savings and instances of waste concerned scheduling errors, measurement and verification, and inefficient operations. Data quality is critical to effective EIS use, and is most challenging at the subsystem or component level, and with non-electric energy sources. Sophisticated prediction algorithms may not be well understood but can be applied quite effectively, and sites with custom benchmark models or metrics are more likely to perform analyses external to the EIS. Finally, resources and staffing were identified as a universal challenge, indicating a need to identify additional models of EIS use that extend beyond exclusive in-house use, to analysis services.

  11. P/B i kombination med marknadsvärde : En studie på Stockholmsbörsen 2006 - 2016

    OpenAIRE

    Lundgren, Anton; Ahlgren, Sara

    2017-01-01

    Bakgrund: Denna studie är ett test av investeringsstrategi baserad på relativvärdering av multiplar. Den multipel som kommer att studeras som investeringsstrategi är Price-to-Book (P/B). Valet av multipel på P/B beror på att det är en väl omskriven multipel som fortfarande väcker frågeställningar avseende betydelsen av bokfört värde i kombination med marknadsvärde. Syfte: Syftet med denna studie är att undersöka och analysera multipeln P/B som investeringsstrategi för aktier. Vidare syftar st...

  12. Emocionālā intelekta attīstība 16 -18 gadus veciem pusaudžiem un tā saistība ar vecāku audzināšanas stilu.

    OpenAIRE

    Poļakova, Anželika

    2011-01-01

    Šī pētījuma mērķis ir noskaidrot, vai vecāku izvēlētais audzināšanas stils ir saistīts ar emocionālā intelekta attīstību. Pētījumā piedalījās 64 respondenti: 32 sievietes no 16 līdz 18 gadiem un 32 vīrieši no 16 līdz 18 gadiem. Respondenti pārstāv dažādas sociāli ekonomiskas grupas. Tika izmantotas šādas metodes: Bar-Ona emocionālā intelekta aptauja (Bar-On Emotional Quotient Inventory (EQ-i), Bar-On, 1999) un Buri Vecāku audzināšanas stila aptauju (Buri Parental Authority Questionnaire- PAQ...

  13. Control system studies for thermionic reactors

    Science.gov (United States)

    Hermsen, R. J.; Gronroos, H. G.

    1978-01-01

    In core thermionic reactor concepts are of interest for space missions that require electrical power in the range of a few tens of kilowatts up to several megawatts. The physical principle involved--thermionic direct conversion of heat to electricity at net efficiencies up to 15 percent--offers potential advantages when compared to other nuclear powerplant concepts. However, the integration of the thermionic diode electrode structure with high-temperature nuclear fuel materials presents new design problems and new reactor physical constraints. Among the topics that must be investigated are those associated with the control system. The results of analytical and simulation studies of thermionic reactor control performed at the Jet Propulsion Laboratory are discussed.

  14. Nuclear magnetic resonance studies of biological systems

    International Nuclear Information System (INIS)

    Antypas, W.G. Jr.

    1988-01-01

    The difference between intracellular and extracellular proton relaxation rates provides the basis for the determination of the mean hemoglobin concentration (MHC) in red blood cells. The observed water T 1 relaxation data from red blood cell samples under various conditions were fit to the complete equation for the time-dependent decay of magnetization for a two-compartment system including chemical exchange. The MHC for each sample was calculated from the hematocrit and the intracellular water fraction as determined by NMR. The binding of the phosphorylcholine (PC) analogue, 2-(trimethylphosphonio)-ethylphosphate (phosphoryl-phosphocholine, PPC) to the PC binding myeloma proteins TEPC-15, McPC 603, and MOPC 167 was studied by 31 P NMR

  15. GER DE NYA REGLERNA DEN RÄTTA BILDEN? : En studie kring immateriella tillgångar och goodwill

    OpenAIRE

    Franzén, Liza; Johansson, Niklas

    2008-01-01

    I dagens mer globaliserade värld blir problemet med olika redovisningsmetoder ett allt större problem för investerare och finansiärer. För att motverka detta har IASB introducerat nya internationella redovisningsrekommendationer. För den Europeiska unionen, i och med det även Sverige, gäller från och med 1 januari år 2005 dessa standarder, IAS/IFRS, för samtliga börsnoterade bolag. Denna studie kommer att inrikta sig på de redovisningsrekommendationer som gäller redovisning av immateriella ti...

  16. National Environmental Change Information System Case Study

    Science.gov (United States)

    Goodman, S. J.; Ritschard, R.; Estes, M. G., Jr.; Hatch, U.

    2001-01-01

    The Global Hydrology and Climate Center and NASA's Marshall Space Flight Center conducted a fact-finding case study for the Data Management Working Group (DMWG), now referred to as the Data and Information Working Group (DIWG), of the U.S. Global Change Research Program (USGCRP) to determine the feasibility of an interagency National Environmental Change Information System (NECIS). In order to better understand the data and information needs of policy and decision makers at the national, state, and local level, the DIWG asked the case study team to choose a regional water resources issue in the southeastern United States that had an impact on a diverse group of stakeholders. The southeastern United States was also of interest because the region experiences interannual climatic variations and impacts due to El Nino and La Nina. Jointly, with input from the DIWG, a focus on future water resources planning in the Apalachicola-Chattahoochee-Flint (ACF) River basins of Alabama, Georgia, and Florida was selected. A tristate compact and water allocation formula is currently being negotiated between the states and U.S. Army Corps of Engineers (COE) that will affect the availability of water among competing uses within the ACF River basin. All major reservoirs on the ACF are federally owned and operated by the U.S. Army COE. A similar two-state negotiation is ongoing that addresses the water allocations in the adjacent Alabama-Coosa-Tallapoosa (ACT) River basin, which extends from northwest Georgia to Mobile Bay. The ACF and ACT basins are the subject of a comprehensive river basin study involving many stakeholders. The key objectives of this case study were to identify specific data and information needs of key stakeholders in the ACF region, determine what capabilities are needed to provide the most practical response to these user requests, and to identify any limitations in the use of federal data and information. The NECIS case study followed the terms of reference

  17. Studies on attitude toward teaching science and anxiety about teaching science in preservice elementary teachers

    Science.gov (United States)

    Westerback, Mary E.

    These studies examined attitude toward teaching science (ATTS) using an adaptation of the Bratt Attitude Test (M-BAT); anxiety about teaching science (ANX-TS), as measured by the State-Trait Anxiety Inventory (STAI A-State); and selected demographic variables in preservice elementary teachers for the 1977-1978 and 1978-1979 academic years and a follow-up of those students who completed their student teaching in May 1979. The M-BAT and STAI were administered in September at the beginning of Science 6 (earth science and biology course), in December on the next to last day of Science 6, in May on the next to the last day of Science 5 (physical science), and in May 1979 after student teaching. In the two academic years, both ATTS and ANX-TS became more positive during the sequence Science 6-5. Both changes in ATTS and ANX-TS continued to change in a positive direction after completion of Science 6-5, after student teaching. There were differences in the times that the greatest changes in ATTS and ANX-TS occurred. In both studies, the greatest change in ATTS took place between September and December, during Science 6. The greatest change in ANX-TS, however, took place during Science 5 between December and May in the 1977-1978 study. In the 1978-1979 study, the greatest changes in ANX-TS occurred in Science 6, between September and December. The delayed reduction of ANX-TS in the 1977-1978 study may be explained by differences in teaching patterns. In 1977-1978, two teachers taught only their academic specialty, biology or earth science, to students who switched teachers midsemester. In 1978-1979, the same two instructors taught both biology and earth science to the same students. Correlation coefficients for successive and corresponding administrations of both the M-BAT and STAI suggest these variables are related. Students with more positive ATTS tended to have reduced ANX-TS. Neither the number of high school or college science and math courses completed nor the level

  18. Solar-gas systems impact analysis study

    Science.gov (United States)

    Neill, C. P.; Hahn, E. F.; Loose, J. C.; Poe, T. E.; Hirshberg, A. S.; Haas, S.; Preble, B.; Halpin, J.

    1984-07-01

    The impacts of solar/gas technologies on gas consumers and on gas utilities were measured separately and compared against the impacts of competing gas and electric systems in four climatic regions of the U.S. A methodology was developed for measuring the benefits or penalties of solar/gas systems on a combined basis for consumers sand distribution companies. It is shown that the combined benefits associated with solar/gas systems are generally greatest when the systems are purchased by customers who would have otherwise chosen high-efficiency electric systems (were solar/gas systems not available in the market place). The role of gas utilities in encouraging consumer acceptance of solar/gas systems was also examined ion a qualitative fashion. A decision framework for analyzing the type and level of utility involvement in solar/gas technologies was developed.

  19. Hydra, a model system for environmental studies.

    Science.gov (United States)

    Quinn, Brian; Gagné, François; Blaise, Christian

    2012-01-01

    Hydra have been extensively used for studying the teratogenic and toxic potential of numerous toxins throughout the years and are more recently growing in popularity to assess the impacts of environmental pollutants. Hydra are an appropriate bioindicator species for use in environmental assessment owing to their easily measurable physical (morphology), biochemical (xenobiotic biotransformation; oxidative stress), behavioural (feeding) and reproductive (sexual and asexual) endpoints. Hydra also possess an unparalleled ability to regenerate, allowing the assessment of teratogenic compounds and the impact of contaminants on stem cells. Importantly, Hydra are ubiquitous throughout freshwater environments and relatively easy to culture making them appropriate for use in small scale bioassay systems. Hydra have been used to assess the environmental impacts of numerous environmental pollutants including metals, organic toxicants (including pharmaceuticals and endocrine disrupting compounds), nanomaterials and industrial and municipal effluents. They have been found to be among the most sensitive animals tested for metals and certain effluents, comparing favourably with more standardised toxicity tests. Despite their lack of use in formalised monitoring programmes, Hydra have been extensively used and are regarded as a model organism in aquatic toxicology.

  20. Experimental Study of a Thermoelectric Generation System

    DEFF Research Database (Denmark)

    Zhu, Junpeng; Gao, Junling; Chen, Min

    2011-01-01

    . System-level simulation is carried out using a quasi-one-dimensional numerical model that enables direct comparison with experimental results. The results of both experiment and simulation will provide a foundation to improve and optimize complex thermoelectric generation systems....

  1. ITER ISS system alternative specification study

    International Nuclear Information System (INIS)

    Kveton, O.K.

    1990-08-01

    Recent comments suggested that the fuel systems, in particular the ISS, could be simplified if the ITER specifications were relaxed from the data specified for ITER. This interim report addresses the first part of the analysis, which considers the impact of design specifications on fuel systems design

  2. Power system studies of new ancillary services

    DEFF Research Database (Denmark)

    Hansen, Anca Daniela; Altin, Müfit

    The objective of this report is to illustrate and analyse, by means of simulation test cases, the impact of wind power advanced ancillary services, like inertial response (IR), power oscillation damping (POD) and synchronising power (SP) on the power system. Generic models for wind turbine, wind...... power plant and power system are used in the investigation....

  3. Natural Resource Information System. Remote Sensing Studies.

    Science.gov (United States)

    Leachtenauer, J.; And Others

    A major design objective of the Natural Resource Information System entailed the use of remote sensing data as an input to the system. Potential applications of remote sensing data were therefore reviewed and available imagery interpreted to provide input to a demonstration data base. A literature review was conducted to determine the types and…

  4. LOX/hydrocarbon auxiliary propulsion system study

    Science.gov (United States)

    Orton, G. F.; Mark, T. D.; Weber, D. D.

    1982-01-01

    Liquid oxygen (LOX)/hydrocarbon propulsion concepts for a "second generation' orbiter auxiliary propulsion system was evaluated. The most attractive fuel and system design approach identified, and the technology advancements that are needed to provide high confidence for a subsequent system development were determined. The fuel candidates were ethanol, methane, propane, and ammonia. Even though ammonia is not a hydrocarbon, it was included for evaluation because it is clean burning and has a good technology base. The major system design options were pump versus pressure feed, cryogenic versus ambient temperature RCS propellant feed, and the degree of OMS-RCS integration. Ethanol was determined to be the best fuel candidate. It is an earth-storable fuel with a vapor pressure slightly higher than monomethyl hydrazine. A pump-fed OMS was recommended because of its high specific impulse, enabling greater velocity change and greater payload capability than a pressure fed system.

  5. A thin film hydroponic system for plant studies

    Science.gov (United States)

    Hines, Robert; Prince, Ralph; Muller, Eldon; Schuerger, Andrew

    1990-01-01

    The Land Pavillion, EPCOT Center, houses a hydroponic, thin film growing system identical to that residing in NASA's Biomass Production Chamber at Kennedy Space Center. The system is targeted for plant disease and nutrition studies. The system is described.

  6. Flickor och fenomenet ADHD- är diagnosticering missgynnande för flickor? : En kvalitativ studie ur professionella behandlares perspektiv.

    OpenAIRE

    Arreström, Sofia

    2012-01-01

    Syftet med denna studie är att analysera och beskriva fenomenet -flickor med ADHD. I studien undersöks professionella behandlares upplevelser kring fenomenet flickor med ADHD, utifrån de flickor de mött under sitt yrkespraktiserande och uppmärksamma orsaker som lyfts fram för att förklara varför flickor med ADHD upptäcks mer sällan och i många fall senare än pojkar med ADHD och vilka konsekvenser detta kan leda till. Denna kandidatuppsats har genomförts med kvalitativ metod genom intervjuer m...

  7. Bör Barnkonventionen bli lag i Sverige? : En komparativrättslig studie om barnets rättigheter i Sverige och Norge.

    OpenAIRE

    Hedman, Wendela

    2014-01-01

    Abstrakt ”Bör barnkonventionen bli lag i Sverige? – En komparativrätts-lig studie on barnets rättigheter genom barnkonventionen i Sverige & Norge” Uppsatsen diskuterar med en komparativrättslig metodik implementeringen och inkorporering av barnkonventionen i Sverige och Norge. I tre steg ämnar uppsatsen att undersöka huruvida barnkonventionen bör implementeras till fullo och göras till svensk lag på samma sätt som Norge har valt att göra.Uppsatsen fokuserar på FN:s barnrättkommittés yttra...

  8. A Case Study on Distributed Antenna Systems

    DEFF Research Database (Denmark)

    Sørensen, Troels Bundgaard

    2007-01-01

    Passive distributed antenna systems (DASs) consisting of distributed feeder lines or single point antennas are now often installed in large office buildings where they provide efficient coverage throughout the building. More sophisticated DASs with intelligent reuse and the ability to adapt...... is described in terms of algorithms for power allocation and access port assignment, as well as algorithms for (dynamic) channel assignment. After an outline of simulation assumptions, system capacity comparisons are given between the adaptive DAS and a system with fixed channel and access port assignment...

  9. Semi-Automated Speech Transcription System Study

    Science.gov (United States)

    1994-08-31

    System) program and was trained on the Wall Street Journal task (described in [recogl], [recog2] and [recog3]). This speech recognizer is a time...quality of Wall Street Journal data (very high) and SWITCHBOARD data (poor), but also because the type of speech in broadcast data is also somewhere...between extremes of read text (the Wall Street Journal data) and spontaneous speech (SWITCHBOARD data). Dragon Systems’ SWITCHBOARD recognizer obtained a

  10. Mini-Tn7 Insertion in an Artificial attTn7 Site Enables Depletion of the Essential Master Regulator CtrA in the Phytopathogen Agrobacterium tumefaciens.

    Science.gov (United States)

    Figueroa-Cuilan, Wanda; Daniel, Jeremy J; Howell, Matthew; Sulaiman, Aliyah; Brown, Pamela J B

    2016-08-15

    Mechanistic studies of many processes in Agrobacterium tumefaciens have been hampered by a lack of genetic tools for characterization of essential genes. In this study, we used a Tn7-based method for inducible control of transcription from an engineered site on the chromosome. We demonstrate that this method enables tighter control of inducible promoters than plasmid-based systems and can be used for depletion studies. The method enables the construction of depletion strains to characterize the roles of essential genes in A. tumefaciens Here, we used the strategy to deplete the alphaproteobacterial master regulator CtrA and found that depletion of this essential gene results in dramatic rounding of cells, which become nonviable. Agrobacterium tumefaciens is a bacterial plant pathogen and natural genetic engineer. Thus, studies of essential processes, including cell cycle progression, DNA replication and segregation, cell growth, and division, may provide insights for limiting disease or improving biotechnology applications. Copyright © 2016, American Society for Microbiology. All Rights Reserved.

  11. System and safety studies of accelerator driven transmutation systems

    Energy Technology Data Exchange (ETDEWEB)

    Gudowski, W.; Wallenius, J.; Tucek, K.; Eriksson, Marcus; Carlsson, Johan; Seltborg, P.; Cetnar, J. [Royal Inst. of Technology, Stockholm (Sweden). Dept. of Nuclear and Reactor Physics

    2001-05-01

    The research on safety of Accelerator-Driven Transmutation Systems (ADS) at the department has been focused on: a) ADS core design and development of advanced nuclear fuel optimised for high transmutation rates and good safety features; b) analysis of ADS-dynamics c) computer code and nuclear data development relevant for simulation and optimization of ADS; d) participation in ADS experiments including 1 MW spallation target manufacturing, subcritical experiments MUSE (CEA-Cadarache). Moreover, during the reporting period the EU-project 'IABAT', co-ordinated by the department has been finished and 4 other projects have been initiated in the frame of the 5th European Framework Programme. Most of the research topics reported in this paper are referred to appendices, which have been published in the open literature. The topics, which are not yet published, are described here in more details.

  12. System and safety studies of accelerator driven transmutation systems

    International Nuclear Information System (INIS)

    Gudowski, W.; Wallenius, J.; Tucek, K.; Eriksson, Marcus; Carlsson, Johan; Seltborg, P.; Cetnar, J.

    2001-05-01

    The research on safety of Accelerator-Driven Transmutation Systems (ADS) at the department has been focused on: a) ADS core design and development of advanced nuclear fuel optimised for high transmutation rates and good safety features; b) analysis of ADS-dynamics c) computer code and nuclear data development relevant for simulation and optimization of ADS; d) participation in ADS experiments including 1 MW spallation target manufacturing, subcritical experiments MUSE (CEA-Cadarache). Moreover, during the reporting period the EU-project 'IABAT', co-ordinated by the department has been finished and 4 other projects have been initiated in the frame of the 5th European Framework Programme. Most of the research topics reported in this paper are referred to appendices, which have been published in the open literature. The topics, which are not yet published, are described here in more details

  13. Integrating gender studies in university eductaion system

    OpenAIRE

    Petrušić, Nevena; Konstantinović-Vilić, Slobodanka

    2012-01-01

    Gender Studies (Gender Studies, Women’s Studies, Gender Studies / Women’s Studies) by multi / interdisciplinary approach to various topics in the field of social sciences, humanities, arts, sciences, and thus significantly affect the modernization of university programs. The paper deals with the introduction of gender mainstreaming women’s/gender studies in university education in European countries and in Serbia. Experience shows that gender studies are the most important resource in the pro...

  14. Human-Centered Command and Control of Future Autonomous Systems

    Science.gov (United States)

    2013-06-01

    fbo . or·~· .wlw:le ~diffetently!OCIDO’fKI-t Att~to••ncon~ Rn .. ntot.....ln ..... ntaf!Mt~om..,....tlom ~-diffffently(loullv)tocO<TeCtmt~Y...J. M. (2011). Display and Interface Design: Subtle Science, Exact Art. CRC Press, Boca Raton, FL. Billings, C. E. (1996). Aviation Automation: The... Aviation Psychology. Fleet Forces Command (2008). Fleet Unmanned Aircraft Systems Concept of Operations. Naval Network Warfare Command, 31 July 2008

  15. Online Homework Management Systems: Should We Allow Multiple Attempts?

    OpenAIRE

    Rhodes, M. Taylor; Sarbaum, Jeffrey K.

    2013-01-01

    Conventional pencil and paper wisdom suggests that allowing multiple attempts on homework will lead to more time spent on homework, higher homework grades, and better exam performance. For a variety of reasons, homework is increasingly being auto-administered online. This paper discusses the results of a quasi-experiment designed to evaluate student behavior under single and multiple attempt homework settings using an online homework management system. The paper explores whether multiple atte...

  16. Cardiac CT: A system architecture study.

    Science.gov (United States)

    FitzGerald, Paul; Bennett, James; Carr, Jeffrey; Edic, Peter M; Entrikin, Daniel; Gao, Hewei; Iatrou, Maria; Jin, Yannan; Liu, Baodong; Wang, Ge; Wang, Jiao; Yin, Zhye; Yu, Hengyong; Zeng, Kai; De Man, Bruno

    2016-01-01

    We are interested in exploring dedicated, high-performance cardiac CT systems optimized to provide the best tradeoff between system cost, image quality, and radiation dose. We sought to identify and evaluate a broad range of CT architectures that could provide an optimal, dedicated cardiac CT solution. We identified and evaluated thirty candidate architectures using consistent design choices. We defined specific evaluation metrics related to cost and performance. We then scored the candidates versus the defined metrics. Lastly, we applied a weighting system to combine scores for all metrics into a single overall score for each architecture. CT experts with backgrounds in cardiovascular radiology, x-ray physics, CT hardware and CT algorithms performed the scoring and weighting. We found nearly a twofold difference between the most and the least promising candidate architectures. Architectures employed by contemporary commercial diagnostic CT systems were among the highest-scoring candidates. We identified six architectures that show sufficient promise to merit further in-depth analysis and comparison. Our results suggest that contemporary diagnostic CT system architectures outperform most other candidates that we evaluated, but the results for a few alternatives were relatively close. We selected six representative high-scoring candidates for more detailed design and further comparative evaluation.

  17. ”Jag är inte här för att utbilda dig, jag är här för att jag behöver din hjälp.” : En kvalitativ intervjustudie om transpersoners erfarenheter av bemötande från samhällets instanser.

    OpenAIRE

    Rydbjer, Beatrice; Bristav, Karin

    2017-01-01

    This is a qualitative interview study where 7 transgender people is interviewed about their experiences of treatment from institutions within society. In semi-structured interviews, respondents talk about the treatment they received from health care, education, legal system, employment offices and social services. The study's purpose is to examine the treatment transgender peoples gets based on their own stories and perspectives. The study also discusses the social structures, like binary gen...

  18. Systems approaches to study root architecture dynamics

    Directory of Open Access Journals (Sweden)

    Candela eCuesta

    2013-12-01

    Full Text Available The plant root system is essential for providing anchorage to the soil, supplying minerals and water, and synthesizing metabolites. It is a dynamic organ modulated by external cues such as environmental signals, water and nutrients availability, salinity and others. Lateral roots are initiated from the primary root post-embryonically, after which they progress through discrete developmental stages which can be independently controlled, providing a high level of plasticity during root system formation.Within this review, main contributions are presented, from the classical forward genetic screens to the more recent high-throughput approaches, combined with computer model predictions, dissecting how lateral roots and thereby root system architecture is established and developed.

  19. European nuclear data studies for fast systems

    International Nuclear Information System (INIS)

    Rullhusen, P.; Hambsch, F.-J.; Mondelaers, W.; Plompen, A.J.M.; Schillebeeckx, P.

    2010-01-01

    Nuclear data needs for fast systems are highlighted and the following projects are described: Joint European research projects: MUSE Experiments for Sub-critical Neutronics Validation; High- and Intermediate Energy Nuclear Data for ADS (HINDAS); and the Time-Of-Flight facility for Nuclear Data Measurements for ADS (n T OF N D A DS); European Research Programme for the Transmutation of High Level Nuclear Waste in an Accelerator Driven System (EUROTRANS-NUDATRA); and CANDIDE; Programmes for transnational access to experimental facilities in Europe: European Facilities for Nuclear Data Measurements (EFNUDAT); Neutron Data Measurements at IRMM (NUDAME); European facility for innovative reactor and transmutation neutron data (EUFRAT) (P.A.)

  20. System Study: Auxiliary Feedwater 1998–2013

    Energy Technology Data Exchange (ETDEWEB)

    Schroeder, John Alton [Idaho National Lab. (INL), Idaho Falls, ID (United States). Risk Assessment and Management Services Dept.

    2014-12-31

    This report presents an unreliability evaluation of the auxiliary feedwater (AFW) system at 69 U.S. commercial nuclear power plants. Demand, run hours, and failure data from fiscal year 1998 through 2013 for selected components were obtained from the Institute of Nuclear Power Operations (INPO) Consolidated Events Database (ICES). The unreliability results are trended for the most recent 10-year period, while yearly estimates for system unreliability are provided for the entire active period. No statistically significant increasing or decreasing trends were identified in the AFW results.

  1. System Study: Auxiliary Feedwater 1998-2014

    Energy Technology Data Exchange (ETDEWEB)

    Schroeder, John Alton [Idaho National Lab. (INL), Idaho Falls, ID (United States). Risk Assessment and Management Services Dept.

    2015-12-01

    This report presents an unreliability evaluation of the auxiliary feedwater (AFW) system at 69 U.S. commercial nuclear power plants. Demand, run hours, and failure data from fiscal year 1998 through 2014 for selected components were obtained from the Institute of Nuclear Power Operations (INPO) Consolidated Events Database (ICES). The unreliability results are trended for the most recent 10 year period, while yearly estimates for system unreliability are provided for the entire active period. No statistically significant increasing or decreasing trends were identified in the AFW results.

  2. Communications and Tracking Distributed Systems Evolution Study

    Science.gov (United States)

    Culpepper, William

    1990-01-01

    The Communications and Tracking (C & T) techniques and equipment to support evolutionary space station concepts are being analyzed. Evolutionary space station configurations and operational concepts are used to derive the results to date. A description of the C & T system based on future capability needs is presented. Included are the hooks and scars currently identified to support future growth.

  3. Photonuclear studies in the few nucleon system

    International Nuclear Information System (INIS)

    Weiss, M.S.

    1975-02-01

    A brief review of photonuclear reactions in few nucleon systems is presented with comparison of theory with experiment. Discrepancies are examined and recent and current research aimed at resolving these problems are discussed. Emphasis is placed on two and three body photodisintegration. (33 figures) (U.S.)

  4. System chemical biology studies of endocrine disruptors

    DEFF Research Database (Denmark)

    Taboureau, Olivier; Oprea, Tudor I.

    Endocrine disrupting chemicals (EDCs) alter hormonal balance and other physiological systems through inappropriate developmental or adult exposure, perturbing the reproductive function of further generations. While disruption of key receptors (e.g., estrogen, androgen, and thyroid) at the ligand...... effects resulting in the perturbation of different proteins associated to particular diseases (e.g., cryptorchidism) were evaluated....

  5. Describing Elementary Teachers' Operative Systems: A Case Study

    Science.gov (United States)

    Dotger, Sharon; McQuitty, Vicki

    2014-01-01

    This case study introduces the notion of an operative system to describe elementary teachers' knowledge and practice. Drawing from complex systems theory, the operative system is defined as the network of knowledge and practices that constituted teachers' work within a lesson study cycle. Data were gathered throughout a lesson study cycle in which…

  6. Geographic information systems - transportation ISTEA management systems server net prototype pooled fund study : phase B - summary

    Science.gov (United States)

    1997-06-01

    The Geographic Information System-Transportation (GIS-T) ISTEA Management Systems Server Net Prototype Pooled Fund Study represents the first national cooperative effort in the transportation industry to address the management and monitoring systems ...

  7. Results of an electrical power system fault study

    Science.gov (United States)

    Dugal-Whitehead, Norma R.; Johnson, Yvette B.

    1992-01-01

    NASA-Marshall conducted a study of electrical power system faults with a view to the development of AI control systems for a spacecraft power system breadboard. The results of this study have been applied to a multichannel high voltage dc spacecraft power system, the Large Autonomous Spacecraft Electrical Power System (LASEPS) breadboard. Some of the faults encountered in testing LASEPS included the shorting of a bus an a falloff in battery cell capacity.

  8. Writing case studies in information systems research

    NARCIS (Netherlands)

    van der Blonk, H.C.

    Case study research can be reported in different ways. This paper explores the various ways in which researchers may choose to write down their case studies and then introduces a subsequent typology of writing case studies. The typology is based on a 2 x 2 matrix, resulting in four forms of writing

  9. Test Firing of chunk wood - Is it possible to automate the fuel supply?; Proveldning av knubbved - Aer det moejligt att automatisera braenslematningen?

    Energy Technology Data Exchange (ETDEWEB)

    Persson, Tomas; Danielsson, Bengt-Olof

    2013-05-15

    Chunk wood is a wood fuel with a fuel particle length typically between 50 and 150 mm. The ad-vantage of chunk wood compared to wood chips is that the fuel dry as fast as fuel wood, but can be produced and handled as wood chip. Technologies for efficient producing, drying and distribution of Chunk wood have been developed since the 1970:s and machines for manufacturing the fuel is available on the market, but still there is no small-scale heating equipment in operation to burn the fuel automatically. The aim of the study was to investigate how the feeding and firing of chunk wood works in a standard 200 kW biomass boiler for various types of biofuels. The main focus was on studying how the fuel feeding system works using chunk wood and if the combustion and emissions are satisfactory. The boiler have a main fuel feeding auger screw connected to the bottom of the fuel storage, followed by a cell feeder and another auger screw that is feeding the fuel into the combustion chamber. The power consumption for the fuel feeding auger screws and the CO-emissions were measured during the firing period. In order to obtain reference values for the stresses in the fuel feeding system and the CO-emissions, regular wood chips were initially fired followed by the chunk wood firing. During the chunk wood firing period several interruptions in the fuel feeding occurred, as the trigger mechanism for the motor protection stopped the fuel supply. Most of the interruptions, however, could be resolved through manual reversing of the fuel feeding auger screw. Only at two occasions the entrance to the auger screw were manually cleared from large fuel pieces. The cell feeder and the auger screw feeding the fuel into the combustion chamber were stopped twice, and to continue operating the boiler it was enough to restart the feeding system. However, as they are both operated by the same motor we do not know whether the two shutdowns that occurred were caused by feeding problems in the auger

  10. Class 1E digital systems studies

    International Nuclear Information System (INIS)

    Hecht, H.; Tai, A.T.; Tso, K.S.

    1993-10-01

    This document is furnished as part of the effort to develop NRC Class 1E Digital Computer Systems Guidelines which is Task 8 of USAF Rome Laboratories Contract F30602-89-D-0100. The report addresses four major topics, namely, computer programming languages, software design and development, software testing and fault tolerance and fault avoidance. The topics are intended as stepping stones leading to a Draft Regulatory Guide document. As part of this task a small scale survey of software fault avoidance and fault tolerance practices was conducted among vendors of nuclear safety related systems and among agencies that develop software for other applications demanding very high reliability. The findings of the present report are in part based on the survey and in part on review of software literature relating to nuclear and other critical installations, as well as on the authors' experience in these areas

  11. Class 1E digital systems studies

    Energy Technology Data Exchange (ETDEWEB)

    Hecht, H.; Tai, A.T.; Tso, K.S. [SoHaR, Inc., Beverly Hills, CA (United States)

    1993-10-01

    This document is furnished as part of the effort to develop NRC Class 1E Digital Computer Systems Guidelines which is Task 8 of USAF Rome Laboratories Contract F30602-89-D-0100. The report addresses four major topics, namely, computer programming languages, software design and development, software testing and fault tolerance and fault avoidance. The topics are intended as stepping stones leading to a Draft Regulatory Guide document. As part of this task a small scale survey of software fault avoidance and fault tolerance practices was conducted among vendors of nuclear safety related systems and among agencies that develop software for other applications demanding very high reliability. The findings of the present report are in part based on the survey and in part on review of software literature relating to nuclear and other critical installations, as well as on the authors` experience in these areas.

  12. Photovoltaic systems concept study. Final report

    Energy Technology Data Exchange (ETDEWEB)

    1977-04-01

    The following appendices are included: economic theory, electric utilities, and peak load pricing; evaluating the total cost of an on-site solar energy system; derivation of PEPS cost model; PEPS economic analysis model; scenarios; the effect of governmental ''subsidies'' on the nuclear power industry; discussion of energy industry subsidies; extension of the Hottel-Whillier-Bliss model to the analysis of combined photovoltaic/thermal flat plate collectors; analysis of solar-augmented rock-bed/heat pump system; TRNSYS results for Washington, D.C. residence with air collectors, rock-bed storage, and parallel Airesearch heat pump; tabulation of electrical loads for Phoenix, Riverside, and Cleveland using a simplified hourly method; evaporative air coolers; cooling efficiency and electrical consumption; and Hoover Dam operation. (MHR)

  13. Study of plutonium-addition systems

    International Nuclear Information System (INIS)

    Kuchar, L.; Wozniakova, B.

    1976-11-01

    Steady state phase diagrams and calculated values of concentrations on the solid and liquid curves, the steady state distribution coefficient and thermodynamic control are presented for temperatures ranging from the eutectic reaction temperatures to the Pu melting point temperature for binary systems plutonium-addition (Mg, Al, Si, Ti, Mn, Fe, Co, Ni, Cu, Zn, Ga, Zr, Ru, Os, Th, U, Np). (J.P.)

  14. Study of a class of hybrid-time systems

    International Nuclear Information System (INIS)

    Cervantes, I.; Femat, R.; Leyva-Ramos, J.

    2007-01-01

    The aim of this paper is to study the dynamic behavior of a class of hybrid-time systems. In particular, we concern about switched systems constituted by two linear second order systems with a time varying (sinusoidal type) translation term. By means of numerical simulations, system behavior and its relation to system parameters are studied. It is shown that system eigenvalues play a crucial role in the time evolution of the system leading either to regular behavior, oscillatory patterns or intermittent erratic-periodic behavior. Furthermore, it is shown that under certain conditions, presumable fractal structures can be obtained

  15. The Systems Approach to Innovation Studies

    Directory of Open Access Journals (Sweden)

    Karen Manley

    2002-05-01

    Full Text Available The academic literature, and business practice, reveals a shift in the way analysts understand innovation processes. This shift is not revealed as a cohesive trend, rather it comprises contributions from a wide range of academic disciplines and empirical evidence. Building on Edquist (1997 this paper ties together the diverse new ideas which stress a systems approach to successful innovation. The paper presents an up-to-date overview of this fast moving field, with a view to assisting public policy makers and business managers in designing more effective innovation processes.

  16. Advanced Reconnaissance System Component Reliability Study

    Science.gov (United States)

    1956-07-31

    or chemical interaction of the air atoms and molecules.on the vehicle skin or lens and window materials. The quantity of molecules present is very low...I Mill -• •ri... ": :’s t:.... 111 . . . orIII. i...1 MINI . • ; . . .1...!.... : . •..1 • . , , BIM El MIMIIMO= .. insma’ • • . wart...Reliability were discussed. "Some Reliability Aspects of Systems Design", Moskowitz, Fred and * Lean , John’, RADC Technical Note 55-4 "Reliability is

  17. INFORMATION SYSTEMS (IS AND INNOVATION: BIBLIOMETRIC STUDY

    Directory of Open Access Journals (Sweden)

    Fernanda de Carvalho Pereira

    2016-04-01

    Full Text Available Information Systems (IS and innovation are two issues currently discussed. The purpose of this articleis to verify the completeness of the literature with regard to the treatment of these two topics together. With this purpose, a bibliometric research was conducted using bases in ISI Web of Science, Scopus and Scielo. 134 articles were analyzed and generated some results, such as: predominance of publications from Brazil and the United States of America; higher recurrence of the Enterprise Resource Planning citation (ERP in comparison to other tools; and predominance of practical researches, which apply concepts from the literature in real situations.

  18. Monte Carlo study of the multiquark systems

    International Nuclear Information System (INIS)

    Kerbikov, B.O.; Polikarpov, M.I.; Zamolodchikov, A.B.

    1986-01-01

    Random walks have been used to calculate the energies of the ground states in systems of N=3, 6, 9, 12 quarks. Multiquark states with N>3 are unstable with respect to the spontaneous dissociation into color singlet hadrons. The modified Green's function Monte Carlo algorithm which proved to be more simple and much accurate than the conventional few body methods have been employed. In contrast to other techniques, the same equations are used for any number of particles, while the computer time increases only linearly V, S the number of particles

  19. Positron imaging system for plant study

    International Nuclear Information System (INIS)

    Uchida, Hiroshi; Omura, Tomohide; Yamashita, Takaji

    2000-01-01

    The positron imaging system, which we have developed, is composed of two planar detectors which detect gamma-rays. These are placed on either side of a plant onto which tracers labeled with positron emitting nuclides have been fed. A pair of gamma rays produced by the annihilation of the positrons and electrons is measured simultaneously from both directions, to identify the tracer position. This measurement method enables dynamic movements of substances within the plant to be obtained as a two-dimensional image, without contact. (author)

  20. STUDIES ON THE RCMS RF SYSTEM.

    Energy Technology Data Exchange (ETDEWEB)

    ZHAO,Y.

    2003-01-22

    This note addresses the various options for the Rapid Cycling Medical Synchrotron (RCMS) RF. The study was divided into three cases, namely non-tuning, tuning and filter. Each case also includes a few options. The primary study was focused on the non-tuning options. However, it was found that it requires too much driver power to cover the wide band and thus causes the cost being too high to be competitive. The proposal of RCMS is not yet clear if it can be approved or not. The results of this study might be useful to other similar machines.

  1. Feasibility Study and Optimization of An Hybrid System (Eolian ...

    African Journals Online (AJOL)

    Feasibility Study and Optimization of An Hybrid System (Eolian- Photovoltaic - Diesel) With Provision of Electric Energy Completely Independent. ... reducing emissions of greenhouse gas (CO2 rate = 16086 kg / year for a system using only the generator diesel and is 599 kg / year for the stand alone hybrid system studied).

  2. Reflection seismology systems for planetary geology : A feasibility study

    NARCIS (Netherlands)

    Batenburg, P.A.W.; Gill, E.K.A.; Drijkoningen, G.G.; Foing, B.H.; Toxopeus, G.

    2009-01-01

    A feasibility study is conducted to determine whether reflection seismology systems can be used for planetary geology research. The focus is on systems with up to 20,000 seismic detectors, such as used today in Earth geological research and energy companies. The study follows a top-down systems

  3. Wash water waste pretreatment system study

    Science.gov (United States)

    1976-01-01

    The use of real wash water had no adverse effect on soap removal when an Olive Leaf soap based system was used; 96 percent of the soap was removed using ferric chloride. Numerous chemical agents were evaluated as antifoams for synthetic wash water. Wash water surfactants used included Olive Leaf Soap, Ivory Soap, Neutrogena and Neutrogena Rain Bath Gel, Alipal CO-436, Aerosol 18, Miranol JEM, Palmeto, and Aerosol MA-80. For each type of soapy wash water evaluated, at least one antifoam capable of causing nonpersistent foam was identified. In general, the silicones and the heavy metal ions (i.e., ferric, aluminum, etc.) were the most effective antifoams. Required dosage was in the range of 50 to 200 ppm.

  4. Conceptual design study of IFMIF target system

    International Nuclear Information System (INIS)

    Kato, Y.; Nakamura, H.; Ida, M.; Maekawa, H.; Katsuta, H.; Hua, T.; Cevolani, S.

    1997-01-01

    IFMIF-CDA (International Fusion Materials Irradiation Facility - Conceptual Design Activity) had been carried out during 1995 and 1996, under the auspices of the IEA. The mission of this facility is to provide an accelerator based deuterium-lithium (D-Li) neutron source to test the candidate materials of radiation - resistant and low - activation materials up to about a full lifetime of anticipated use in fusion energy reactors. The neutrons of about 14 MeV are obtained by the stripping reaction of the deuteron of Max. 40 MeV with target lithium. Total deuteron beam current is about 250 mA and beam footprint is 20 cm x 5 cm on the free surface of lithium jet. In this report general characteristics of the target lithium system and the results of thermal and flow analysis for the target lithium jet are described. (author)

  5. Technical Evaluation Reports 15. Chat and Instant Messaging Systems (synchronous: Report 3/ 3

    Directory of Open Access Journals (Sweden)

    Brian Ludwig

    2002-10-01

    Full Text Available [Previous reviews of chat and IM systems are presented in Reports 6 and 14 in this series.]A further set of four text-based instant messaging (IM products was evaluated: AT&T Anywhere, Parachat, Sonork, and Yahoo Messenger, all available at no cost. Yahoo Messenger was judged to be the most effective of the three products for use by distance education (DE teachers and students, being compatible with most common operating systems and accommodating up to 50 chat room participants. Yahoo Messenger also possesses integrated audio and video capabilities. AT&T Anywhere is an efficient product, which supports Windows-based operating systems only. Parachat (Basic version is a basic, browser accessed chat board without instant messaging (IM capabilities.

  6. Study of the Nuclear Regulatory Commission's Appellate System

    International Nuclear Information System (INIS)

    Bickwit, L.; Malsch, M.; Ostrach, S.; Christenson, K.

    1979-12-01

    At the Chairman's request the Office of the General Counsel studied the Commission's appellate system. The study included examination of the development of the study, analysis of the current workload, investigation of the practices of other agencies, and consideration of alternatives to the present system. The study recommends retention of the present system with some limited modifications to enable the Commission to more effectively use its existing appellate powers

  7. Structural Study of Polyethylene/Montmorillonite Systems

    International Nuclear Information System (INIS)

    Malicka, A.; Domka, L.

    2008-01-01

    The effect of modification of montmorillonite (with 3-amino- propyltrimethoxysilane or hexadecyltrimethylammonium chloride) on the mechanical properties of the composites based on HDPE Hostalen ACP 5831 with the modified montmorillonite as filler, was studied. The structures of the fillers and nanocomposites were characterised by the scanning electron microscopy and X-ray diffraction study. The effect of the filler modification on the mechanical parameters of the nanocomposites and their structure was assessed on the basis of determination of the mechanical resistance, elongation at maximum tearing stress, bending strength, deformation at the maximum force and elasticity modulus on bending (three-point bending strength). (author)

  8. Reinjection studies of vapor-dominated systems

    Energy Technology Data Exchange (ETDEWEB)

    Schroeder, R.C.; O' Sullivan, M.J.; Pruess, K.; Celati, R.; Ruffilli, C.

    1980-10-20

    The basic physical phenomena associated with geothermal injection are reviewed; problems associated with its numerical simulation are discussed; and the results of some numerical studies are presented. The particular problems chosen for study are: injection of cold water into a thin (single layer) reservoir; a five-spot production/injection configuration in a thin (single layer) reservoir; injection of cold water into a thick (multi-layer) reservoir; and injection of cold water into a one-dimensonal vertical column, representing a cross section of Larderello geothermal reservoir. (MHR)

  9. Carrier and symbol synchronization system performance study

    Science.gov (United States)

    Lindsey, W. C.

    1976-01-01

    Results pertinent to predicting the performance of convolutionally encoded binary phase-shift keyed communication links were presented. The details of the development are provided in four sections. These sections are concerned with developing the bit error probability performance degradations due to PN despreading by a time-shared delay locked loop, the Costas demodulation process, symbol synchronization effects and cycle slipping phenomena in the Costas loop. In addition, Costas cycle slipping probabilities are studied as functions of Doppler count time and signal-to-noise conditions. The effect of cycle slipping in the symbol synchronizer is also studied as a function of channel Doppler and other frequency uncertainties.

  10. AS "PET Baltija" saimnieciskās darbības finanšu analīze un attīstības iespējas

    OpenAIRE

    Strazdiņa, Evija

    2014-01-01

    Bakalaura darba mērķis ir izpētīt un analizēt AS „PET Baltija” finanšu pārskatus no 2007.-2012.gadam, balstoties uz veiktajiem aprēķiniem no dotās finanšu informācijas, analizējot un izdarot secinājumus par uzņēmuma finansiālo stāvokli ietekmējošiem faktoriem un izvirzot priekšlikumus uzņēmuma saimnieciskās darbības veicināšanai un turpmākai attīstībai. Darba gaitā bakalaura darba izstrādāšanai, pielietojot nozīmīgākos finanšu rādītājus, tika secināts, ka uzņēmuma darbību negatīvi ietekmēj...

  11. Video izmantošana runas prasmju attīstīšanai angļu valodas stundās 5.- 7.klasēs.

    OpenAIRE

    Dreiberga, Lolita

    2006-01-01

    Mūsdienu sabiedrībā arvien pieaug interese par video, televīziju, datortehniku, kas ietekmē ikvienu kā pozitīvi, tā arī negatīvi, kā arī piedāvā plašas iespējas skolēnu izglītošanai un pilnveidošanai. Mūsu sabiedrībā skolēni lielākās savas dzīves zināšanas un pieredzi iegūst no tehniskajiem līdzekļiem (video, televīzijas, datortehnikas). Diplomdarba „Video izmantošana runas prasmju attīstīšanai angļu valodas stundās 5.-7. klasēs” mērķis ir noskaidrot un izpētīt, kāda ir video loma 5.-7. k...

  12. Studentu komunikatīvās kompetences attīstīšana apgūstot mērķvalodas vārdu krājumu

    OpenAIRE

    Vizbule, Ludmila

    2008-01-01

    Diplomdarba mērķis ir pierādīt, ka daudzveidīga vārdu krājuma mācīšanas un tā apguves uzdevumu lietošana, kā arī apgūtā materiāla regulāra nostiprināšana paaugstina studentu spēju apgūt vārdu krājumu mērķvalodā, tādējādi veicinot komunikatīvās kompetences attīstību. Darbā sniegts pārskats par komunikatīvās kompetences jēdzienu saistībā ar svešvalodas mācīšanu un tās apguvi; lingvistiskā kompetence un leksiskā kompetence aplūkotas kā būtiskas komunikatīvās kompetences sastāvdaļas. Diplomdar...

  13. Teātra sports kā personību attīstoša ārpusstundu aktivitāte skolēniem

    OpenAIRE

    Groznija, Signe

    2015-01-01

    Pētījuma mērķis ir noskaidrot, kādas prasmes skolēni iegūst un attīsta teātra sporta nodarbībās, kā arī noskaidrot skolēnu motivāciju. Bakalaura darbā tiek izklāstīta teātra sporta vēsture Latvijā. Tiek izskaidrota teātra sporta būtība, to veidojošie elementi, kā arī tiek izskaidrots, kā šī teatrālā aktivitāte ir saistīta ar sportu. Tiek aplūkotas motivācijas teorijas, kas izskaidro skolēnu vēlmi iesaistīties ārpusstundu aktivitātēs. Ērvinga Gofmaņa dramaturģiskā skaidro komandas darba nozīmī...

  14. Comparative study of two treatment planning systems

    International Nuclear Information System (INIS)

    Ramos Caballero, L. J.; Quinones Rodriguez, L. A.; Lupiani Castellanos, J.

    2013-01-01

    In this study of the comparison of the clinical dosimetry between planners can deduce that the differences are in the majority of the cases below 3%, and only in cases where the field size is small, we found significant discrepancies, although justifiable. On the one hand it is different calculation algorithm and implementation on the other, the modeling of the accelerator. (Author)

  15. Studying Design Engineers Use Of Information Systems

    DEFF Research Database (Denmark)

    Restrepo-Giraldo, John Dairo

    2006-01-01

    Studying information usage by design engineers involves considering technical, social, cognitive and volitional factors. This makes it challenging, especially for researchers without a cognitive psychology background. This paper presents a summary of key findings in researching information use...... and processing in design, discusses important issues on the selection of a research strategy and sums up the important variables that need to be controlled for....

  16. Reporter Systems to Study HTLV-1 Transmission.

    Science.gov (United States)

    Gross, Christine; Thoma-Kress, Andrea K

    2017-01-01

    The retrovirus Human T-lymphotropic virus type 1 (HTLV-1) preferentially infects CD4 + T-cells via cell-to-cell transmission, while cell-free infection of T-cells is inefficient. Substantial insights into the different routes of transmission have largely been obtained by imaging techniques or by flow cytometry. Recently, strategies to quantify infection events with HTLV-1 improved. In this chapter, we present two different methods to quantitate virus transmission. Both methods are based on measuring gene activity of luciferase with a cost-saving in-house luciferase assay. First, we established a reporter Jurkat T-cell line carrying a luciferase gene under the control of the HTLV-1 core promoter U3R. Upon co-culture with chronically HTLV-1-infected T-cell lines, reporter cells are infected, and upon expression of the viral transactivator Tax, the viral promoter is activated resulting in enhanced luciferase activity. However, this assay as presented here does not exclude cell fusion as the mechanism allowing intracellular Tax-dependent activation of luciferase gene expression. Therefore, we describe a second method, the single-cycle replication-dependent reporter system developed by Mazurov et al. (PLoS Pathog 6:e1000788, 2010) that allows quantitation of HTLV-1 infection in co-cultured cells. Taken together, both methods facilitate quantitation of HTLV-1 transmission and will help to unravel pathways required for cell-to-cell transmission on a quantitative basis.

  17. Atmospheric Models for Aerocapture Systems Studies

    Science.gov (United States)

    Justus, C. G.; Duvall, Aleta; Keller, Vernon W.

    2003-01-01

    Aerocapture uses atmospheric drag to decelerate into captured orbit from interplanetary transfer orbit. This includes capture into Earth orbit from, for example, Lunar-return or Mars-return orbit. Eight Solar System destinations have sufficient atmosphere for aerocapture to be applicable - three of the rocky planets (Venus, Earth, and Mars), four gas giants (Jupiter, Saturn, Uranus, and Neptune), and Saturn's moon Titan. These destinations fall into two groups: (1) The rocky planets, which have warm surface temperatures (approx. 200 to 750 K) and rapid decrease of density with altitude, and (2) the gas giants and Titan, which have cold temperatures (approx. 70 to 170 K) at the surface or 1-bar pressure level, and slow rate of decrease of density with altitude. The height variation of average density with altitude above 1-bar pressure level for the gas giant planets is shown. The periapsis density required for aerocapture of spacecraft having typical values of ballistic coefficient (a measure of mass per unit cross-sectional area) is also shown. The aerocapture altitudes at the gas giants would typically range from approx. 150 to 300 km. Density profiles are compared for the rocky planets with those for Titan and Neptune. Aerocapture at the rocky planets would occur at heights of approx. 50 to 100 km. For comparison, typical density and altitudes for aerobraking operations (circularizing a highly elliptical capture orbit, using multiple atmospheric passes) are also indicated.

  18. NMR study of strongly correlated electron systems

    Science.gov (United States)

    Kitaoka, Y.; Tou, H.; Zheng, G.-q.; Ishida, K.; Asayama, K.; Kobayashi, T. C.; Kohda, A.; Takeshita, N.; Amaya, K.; Onuki, Y.; Geibel, G.; Schank, C.; Steglich, F.

    1995-02-01

    Various types of ground states in strongly correlated electron systems have been systematically investigated by means of NMR/NQR at low temperatures under high magnetic field and pressure. We focus on two well-known heavy-electron families, CeCu 2X 2 (X = Si and Ge) (Ce(122)) and UM 2Al 3 (M = Ni and Pd) (U(123)). The Cu NQR experiments on CeCu 2X 2 under high pressure indicate that the physical property of CeCu 2Ge 2 at high pressure, i.e. above the transition at 7.6 GPa from antiferromagnetic (AF) to superconductivity, are clearly related to tha CeCu 2Si 2 at ambient pressure. In addition to the H-T phase diagram established below 7 T, NMR and specific heat experiments on polycrystal CeCu 2.05Si 2 have revealed the presence of a new phase above 7 T. In a high-quality polycrystal of UPd 2Al 3 with a record high- Tc of 2 K at ambient pressure and the narrowest Al NQR line width, the nuclear-spin lattice relaxation rate, 27(1/ T1) measured in zero field has been found to obey the T3 law down to 0.13 K, giving strong evidence that the energy gap vanishes along lines on the Fermi surface. Thus it seems that all heavy-electron superconductors exhibit lines of zero gap, regardless of their different magnetic properties.

  19. Tokamak power system studies at ANL

    International Nuclear Information System (INIS)

    Baker, C.C.; Ehst, D.A.; Brooks, J.N.; Evans, K. Jr.

    1986-06-01

    The following features, in particular, have been examined: (a) large aspect ratio (A ≅ 6), which may ease maintenance; (b) high beta (β ≥ 0.20) without indentation, which brings the maximum toroidal field down to about 6 to 7 T; (c) low toroidal current (I ≅ 4MA), which reduces the cost of the current drive and equilibrium field system; and (d) steady state operation with current density control via fast and slow wave current drive. The key to high beta operation with low toroidal current lies in utilizing second stability regime equilibria with the required current distributions produced by an appropriate selection of wave driver frequencies and power spectra. The ray tracing and current drive calculation is self-consistent with the actual magnetic fields they produce in the plasma. The impurity control activities in TPSS have emphasized the self-pumping concept as applied to using the entire first wall or ''slot'' limiters. The blanket design effort has emphasized liquid metal and Flibe concepts. The reference concept is a liquid lithium/vanadium, self-cooled configuration. Overall, there exists a number of major design improvements which will substantially improve the attractiveness of tokamak reactors

  20. Tokamak power systems studies at ANL

    International Nuclear Information System (INIS)

    Baker, C.C.; Ehst, D.A.; Brooks, J.N.; Evans, K. Jr.

    1986-01-01

    A number of advances in plasma physics and engineering promise to greatly improve the reactor prospects of tokamaks. The following features, in particular, are examined: (a) large aspect ratio (A ≅ 6), which may ease maintenance; (b) high beta (β ≥ 0.20) without indentation, which brings the maximum toroidal field down to about 7 T; (c) low toroidal current (I ≅ 5MA), which reduces the cost of the current drive and equilibrium field system; and (d) steady state operation with current density control via fast and slow wave current drive. The key to high beta operation with low toroidal current lies in utilizing second stability regime equilibria with the required current distributions produced by an appropriate selection of wave driver frequencies and power spectra. The ray tracing and current drive calculation is self-consistent with the actual magnetic fields produced in the plasma. In addition to matching desirable high-beta equilibria, this method is capable of producing a large variety of new equilibria, many of which look attractive. The impurity control activities in TPSS have emphasized the self-pumping concept as applied to using the entire first wall or ''slot'' limiters. The blanket design effort has emphasized liquid metal and Flibe concepts. The reference concept is a liquid lithium/vanadium, self-cooled configuration. Overall, there exists a number of major design improvements which will substantially improve the attractiveness of tokamak reactors

  1. Aging studies for the CMS RPC system

    CERN Document Server

    Eysermans, Jan

    2017-01-01

    Aging effects are studied for the Resistive Plate Chambers (RPC) at the Compact Muon Solenoid (CMS) experiment at the CERN Large Hadron Colider (LHC), which can manifest themselves during the High-Luminosity LHC (HL-LHC) running period. A dedicated consolidation program is set up using the CERN Gamma Irradiation Facility ++, where RPC detectors are exposed to a high gamma flux for a long term period equivalent to the HL-LHC operational time. Based on the past operational experience, the high background conditions are estimated and the RPC are tested under such circumstances. Several parameters are monitored as function of integrated charge and dedicated test beam periods allows measuring the detector efficiency as function of the background rate. In this work, an overview of the measurements which were performed for these studies is given. After having accumulated a significant amount of the total irradiation, no aging effects or degradation of the RPC detectors have been observed. These results suggest that ...

  2. Studies on mass transfer in electrochemical systems

    Energy Technology Data Exchange (ETDEWEB)

    Sundstroem, L.G.

    1997-10-01

    The first part is of an introductory nature. It contains a description of the methods used, a discussion of the physics of electrochemical cells with a liquid electrolyte, and a summary of the different studies made, including both those which have been reported in papers, and those which have not. Contributions with novel aspects include (* a derivation of the electro-neutrality condition from Maxwell`s equations of electrodynamics, and **) an argument in favour of the use of mass-averaged velocity in ion transport expressions. The second part focuses on specific cases. It consists of seven research papers which give a more detailed presentation of the main studies 40 refs, 6 figs

  3. Vid era sinnens fulla bruk - en kvantitativ enkätundersökning om ungdomars kunskaper om och attityder till alkohol. Utvecklingsarbete: Minderårigas tillgång till alkohol - en kvalitativ studie med fokus på orsakerna bakom utköpen/förmedlingen av alkohol till minderåriga samt hur langningen av alkohol till minderåriga kan minskas.

    OpenAIRE

    Ström, Cecilia

    2013-01-01

    Examensarbete: I det här examensarbetet har ämnet alkohol och ungdomar behandlats. Syftet med denna studie var att kartlägga vilken kunskap och vilka attityder ungdomar har gällande alkohol och alkoholbruk. För att kunna förebygga eventuella alkoholproblem behövs kunskap om hur unga förhåller sig till alkoholrelaterade frågor. När kunskapen ökar går det bättre att ta itu med det här växande problemet och även få hål på de myter om alkohol som fortfarande cirkulerar. Studien genomförde...

  4. Shuttle Transportation System Case-Study Development

    Science.gov (United States)

    Ransom, Khadijah

    2012-01-01

    A case-study collection was developed for NASA's Space Shuttle Program. Using lessons learned and documented by NASA KSC engineers, analysts, and contractors, decades of information related to processing and launching the Space Shuttle was gathered into a single database. The goal was to provide educators with an alternative means to teach real-world engineering processes and to enhance critical thinking, decision making, and problem solving skills. Suggested formats were created to assist both external educators and internal NASA employees to develop and contribute their own case-study reports to share with other educators and students. Via group project, class discussion, or open-ended research format, students will be introduced to the unique decision making process related to Shuttle missions and development. Teaching notes, images, and related documents will be made accessible to the public for presentation of Space Shuttle reports. Lessons investigated included the engine cutoff (ECO) sensor anomaly which occurred during mission STS-114. Students will be presented with general mission infom1ation as well as an explanation of ECO sensors. The project will conclude with the design of a website that allows for distribution of information to the public as well as case-study report submissions from other educators online.

  5. A Standard System to Study Vertebrate Embryos

    Science.gov (United States)

    Werneburg, Ingmar

    2009-01-01

    Staged embryonic series are important as reference for different kinds of biological studies. I summarise problems that occur when using ‘staging tables’ of ‘model organisms’. Investigations of developmental processes in a broad scope of taxa are becoming commonplace. Beginning in the 1990s, methods were developed to quantify and analyse developmental events in a phylogenetic framework. The algorithms associated with these methods are still under development, mainly due to difficulties of using non-independent characters. Nevertheless, the principle of comparing clearly defined newly occurring morphological features in development (events) in quantifying analyses was a key innovation for comparative embryonic research. Up to date no standard was set for how to define such events in a comparative approach. As a case study I compared the external development of 23 land vertebrate species with a focus on turtles, mainly based on reference staging tables. I excluded all the characters that are only identical for a particular species or general features that were only analysed in a few species. Based on these comparisons I defined 104 developmental characters that are common either for all vertebrates (61 characters), gnathostomes (26), tetrapods (3), amniotes (7), or only for sauropsids (7). Characters concern the neural tube, somite, ear, eye, limb, maxillary and mandibular process, pharyngeal arch, eyelid or carapace development. I present an illustrated guide listing all the defined events. This guide can be used for describing developmental series of any vertebrate species or for documenting specimen variability of a particular species. The guide incorporates drawings and photographs as well as consideration of species identifying developmental features such as colouration. The simple character-code of the guide is extendable to further characters pertaining to external and internal morphological, physiological, genetic or molecular development, and also

  6. A standard system to study vertebrate embryos.

    Directory of Open Access Journals (Sweden)

    Ingmar Werneburg

    2009-06-01

    Full Text Available Staged embryonic series are important as reference for different kinds of biological studies. I summarise problems that occur when using 'staging tables' of 'model organisms'. Investigations of developmental processes in a broad scope of taxa are becoming commonplace. Beginning in the 1990s, methods were developed to quantify and analyse developmental events in a phylogenetic framework. The algorithms associated with these methods are still under development, mainly due to difficulties of using non-independent characters. Nevertheless, the principle of comparing clearly defined newly occurring morphological features in development (events in quantifying analyses was a key innovation for comparative embryonic research. Up to date no standard was set for how to define such events in a comparative approach. As a case study I compared the external development of 23 land vertebrate species with a focus on turtles, mainly based on reference staging tables. I excluded all the characters that are only identical for a particular species or general features that were only analysed in a few species. Based on these comparisons I defined 104 developmental characters that are common either for all vertebrates (61 characters, gnathostomes (26, tetrapods (3, amniotes (7, or only for sauropsids (7. Characters concern the neural tube, somite, ear, eye, limb, maxillary and mandibular process, pharyngeal arch, eyelid or carapace development. I present an illustrated guide listing all the defined events. This guide can be used for describing developmental series of any vertebrate species or for documenting specimen variability of a particular species. The guide incorporates drawings and photographs as well as consideration of species identifying developmental features such as colouration. The simple character-code of the guide is extendable to further characters pertaining to external and internal morphological, physiological, genetic or molecular development, and

  7. Mini-Tn7 Insertion in Bacteria With Multiple glmS-Linked attTn7 Sites: Example Burkholderia Mallei ATCC 23344

    National Research Council Canada - National Science Library

    Choi, Kyoung-Hee; DeShazer, David; Schweizer, Herbert P

    2006-01-01

    We recently constructed a series of broad-range mini-Tn7 vectors to address some of the problems inherent to plasmid-based cloning systems such as multi-copy state, necessity for continued selection...

  8. Mini-Tn7 Insertion in Bacteria With Multiple glmS-Linked attTn7 Sites: Example Burkholderia Mallei ATCC 23344

    National Research Council Canada - National Science Library

    Choi, Kyoung-Hee; DeShazer, David; Schweizer, Herbert P

    2006-01-01

    ... and scarcity for many bacteria. The potential of the mini-Tn7 vectors for finding wide-spread biomedical and environmental applications, particularly for analysis of complex systems such as animal and biofilm models was demonstrated...

  9. Edvarda de Bono radošās domāšanas metodes izmantošana uzņēmējspēju attīstīšanai sociālo zinību stundās 9.klasē

    OpenAIRE

    Šimens, Uldis Tomass

    2011-01-01

    Autors ir izstrādājis diplomdarbu „Edvarda de Bono radošās domāšanas metodes izmantošana uzņēmējspēju attīstīšanai sociālo zinību stundās 9. klasē”, kura mērķis - izpētīt 9. klašu skolēnu uzņēmējspēju attīstīšanas iespējas sociālo zinību stundās izmantojot Edvarda de Bono radošās domāšanas metodi. Darbā analizēta literatūra par uzņēmējspēju attīstīšanu, radošo domāšanu, E. de Bono radošās domāšanas metodi, kā arī sociālo zinību standartu un mācību paraugprogrammas satura analīze sociālajās zi...

  10. Dimensionless study on dynamics of pressure controlled mechanical ventilation system

    International Nuclear Information System (INIS)

    Shi, Yan; Niu, Jinglong; Cai, Maolin; Xu, Weiqing

    2015-01-01

    Dynamics of mechanical ventilation system can be referred in pulmonary diagnostics and treatments. In this paper, to conveniently grasp the essential characteristics of mechanical ventilation system, a dimensionless model of mechanical ventilation system is presented. For the validation of the mathematical model, a prototype mechanical ventilation system of a lung simulator is proposed. Through the simulation and experimental studies on the dimensionless dynamics of the mechanical ventilation system, firstly, the mathematical model is proved to be authentic and reliable. Secondly, the dimensionless dynamics of the mechanical ventilation system are obtained. Last, the influences of key parameters on the dimensionless dynamics of the mechanical ventilation system are illustrated. The study provides a novel method to study the dynamic of mechanical ventilation system, which can be referred in the respiratory diagnostics and treatment.

  11. Process modeling for the Integrated Nonthermal Treatment System (INTS) study

    Energy Technology Data Exchange (ETDEWEB)

    Brown, B.W.

    1997-04-01

    This report describes the process modeling done in support of the Integrated Nonthermal Treatment System (INTS) study. This study was performed to supplement the Integrated Thermal Treatment System (ITTS) study and comprises five conceptual treatment systems that treat DOE contract-handled mixed low-level wastes (MLLW) at temperatures of less than 350{degrees}F. ASPEN PLUS, a chemical process simulator, was used to model the systems. Nonthermal treatment systems were developed as part of the INTS study and include sufficient processing steps to treat the entire inventory of MLLW. The final result of the modeling is a process flowsheet with a detailed mass and energy balance. In contrast to the ITTS study, which modeled only the main treatment system, the INTS study modeled each of the various processing steps with ASPEN PLUS, release 9.1-1. Trace constituents, such as radionuclides and minor pollutant species, were not included in the calculations.

  12. Trade studies for nuclear space power systems

    International Nuclear Information System (INIS)

    Smith, J.M.; Bents, D.J.; Bloomfield, H.S.

    1991-01-01

    As human visions of space applications expand and as we probe further out into the universe, our needs for power will also expand, and missions will evolve which are enabled by nuclear power. A broad spectrum of missions which are enhanced or enabled by nuclear power sources have been defined. These include Earth orbital platforms, deep space platforms, planetary exploration, and terrestrial resource exploration. The recently proposed Space Exploration Initiative (SEI) to the Moon and Mars has more clearly defined these missions and their power requirements. Presented here are results of recent studies of radioisotope and nuclear reactor energy sources, combined with various energy conversion devices for Earth orbital applications, SEI lunar/Mars rovers, surface power, and planetary exploration

  13. Systemic study of knowledge generation at IPEN

    International Nuclear Information System (INIS)

    Monteiro, Carlos Anisio

    2016-01-01

    With the aim of providing subsidies to understand how scientific collaboration process occurs and develops into a research institution, particularly IPEN, this study used two methodological approaches. The first used the social networking analysis (SNA) technique to map the scientific collaboration networks in R&D of IPEN. The data used for the SNA technique were extracted from the technical and scientific publications database of IPEN, using a computer program, and were based on co-authorship from 2001 to 2010 period. These data were grouped into consecutive intervals of two years generating five biennial networks. This first approach showed several structural features related to collaborative networks, especially the most prominent authors, distribution of components, density, boundary spanners and aspects related to distance and clustering to define small world networks. In the second approach, partial least squares, a method to structure equation modeling, was used to evaluate and test a conceptual model based on personal, social, cultural and circumstantial factors to identify those that best explain the propensity of an IPENs author in establishing links of collaboration in R&D environments. From the consolidated model, we evaluated how much it explains the structural position of an author on the network based on SNA indicators. In this second part, the data were collected through a survey research using a questionnaire. The results showed that the model explains about 41% of the propensity of an IPEN author in collaborating with others authors, and in relation to the structural position of an author on the network, the explanation power of model ranged between 3% and 3.6%. Other results have shown that collaboration between IPEN authors have a positive correlation with moderate intensity to productivity, in the same way, the most central authors in the network tend to increase its visibility. Finally, several other bibliometric statistical indicators related

  14. Pulse radiolysis studies in model lipid systems

    International Nuclear Information System (INIS)

    Patterson, L.K.; Hasegawa, K.

    1978-01-01

    The kinetic and spectral behavior of radicals formed by hydroxyl radical attack on linoleate anions has been studied by pulse radiolysis. Reactivity of OH toward this surfactant is an order of magnitude greater in monomeric form (kOH + linoleate = 8.0 x 10 9 M -1 sec -1 ) than in mecellar form (kOH + lin(micelle) = 1.0 x 10 9 M -1 sec -1 ). Abstraction of a hydrogen atom from the doubly allylic position gives rise to an intense absorption in the UV region (lambda max = 282-286 nm, epsilon approximately 3 x 10 4 M -1 cm -1 ) which may be used as a probe of radical activity at that site. This abstraction may occur, to a small extent, directly via OH attack. However, greater than 90% of initial attack occurs at other sites. Subsequent secondary abstraction of doubly allylic H atoms appears to occur predominantly by: (1) intramolecular processes in monomers, (2) intermolecular processes in micelles. Disappearance of radicals by secondary processes is slower in the micellar pseudo phase than in monomeric solution. (orig.) 891 HK 892 KR [de

  15. Higher Education Provision Using Systems Thinking Approach--Case Studies

    Science.gov (United States)

    Dhukaram, Anandhi Vivekanandan; Sgouropoulou, Cleo; Feldman, Gerald; Amini, Ardavan

    2018-01-01

    The purpose of this paper is to highlight the complexities involved in higher education provision and how systems thinking and socio-technical systems (STS) thinking approach can be used to understand the education ecosystem. Systems thinking perspective is provided using two case studies: the development of European Learner Mobility (EuroLM)…

  16. Rehabilitation after ACL Injury: A Fluoroscopic Study on the Effects of Type of Exercise on the Knee Sagittal Plane Arthrokinematics

    Directory of Open Access Journals (Sweden)

    Sadegh Norouzi

    2013-01-01

    Full Text Available A safe rehabilitation exercise for anterior cruciate ligament (ACL injuries needs to be compatible with the normal knee arthrokinematics to avoid abnormal loading on the joint structures. The objective of this study was to measure the amount of the anterior tibial translation (ATT of the ACL-deficient knees during selective open and closed kinetic chain exercises. The intact and injured knees of fourteen male subjects with unilateral ACL injury were imaged using uniplanar fluoroscopy, while the subjects performed forward lunge and unloaded/loaded open kinetic knee extension exercises. The ATTs were measured from fluoroscopic images, as the distance between the tibial and femoral reference points, at seven knee flexion angles, from 0° to 90°. No significant differences were found between the ATTs of the ACL-deficient and intact knees at all flexion angles during forward lunge and unloaded open kinetic knee extension (. During loaded open kinetic knee extension, however, the ATTs of the ACL deficient knees were significantly larger than those of the intact knees at 0° (. It was suggested that the forward lunge, as a weight-bearing closed kinetic chain exercise, provides a safer approach for developing muscle strength and functional stability in rehabilitation program of ACL-deficient knees, in comparison with open kinetic knee extension exercise.

  17. A Study of Synchronization Techniques for Optical Communication Systems

    Science.gov (United States)

    Gagliardi, R. M.

    1975-01-01

    The study of synchronization techniques and related topics in the design of high data rate, deep space, optical communication systems was reported. Data cover: (1) effects of timing errors in narrow pulsed digital optical systems, (2) accuracy of microwave timing systems operating in low powered optical systems, (3) development of improved tracking systems for the optical channel and determination of their tracking performance, (4) development of usable photodetector mathematical models for application to analysis and performance design in communication receivers, and (5) study application of multi-level block encoding to optical transmission of digital data.

  18. Fluid design studies of integrated modular engine system

    Science.gov (United States)

    Frankenfield, Bruce; Carek, Jerry

    1993-01-01

    A study was performed to develop a fluid system design and show the feasibility of constructing an integrated modular engine (IME) configuration, using an expander cycle engine. The primary design goal of the IME configuration was to improve the propulsion system reliability. The IME fluid system was designed as a single fault tolerant system, while minimizing the required fluid components. This study addresses the design of the high pressure manifolds, turbopumps and thrust chambers for the IME configuration. A physical layout drawing was made, which located each of the fluid system components, manifolds and thrust chambers. Finally, a comparison was made between the fluid system designs of an IME system and a non-network (clustered) engine system.

  19. Fuel cell/gas turbine system performance studies

    Energy Technology Data Exchange (ETDEWEB)

    Lee, G.T.; Sudhoff, F.A.

    1996-12-31

    Because of the synergistic effects (higher efficiencies, lower emissions) of combining a fuel cell and a gas turbine into a power generation system, many potential system configurations were studied. This work is focused on novel power plant systems by combining gas turbines, solid oxide fuel cells, and a high-temperature heat exchanger; these systems are ideal for the distributed power and on- site markets in the 1-5 MW size range.

  20. A Preliminary Study on Gender Differences in Studying Systems Analysis and Design

    Science.gov (United States)

    Lee, Fion S. L.; Wong, Kelvin C. K.

    2017-01-01

    Systems analysis and design is a crucial task in system development and is included in a typical information systems programme as a core course. This paper presented a preliminary study on gender differences in studying a systems analysis and design course of an undergraduate programme. Results indicated that male students outperformed female…

  1. Feasibility study of dish/stirling power systems in Turkey

    Science.gov (United States)

    Zilanlı, Gülin Acarol; Eray, Aynur

    2017-06-01

    In this study, two different commercial dish/stirling systems, SES (Stirling Energy Systems) and WGA-ADDS (WGAssociates - Advanced Dish Development System), are modeled using the "System Advisor Model" (SAM) modeling software in designated settlement areas. Both systems are modeled for the US state of Albuquerque, where they were designed, and Turkish provinces of Ankara, Van, Muğla, Mersin, Urfa and Konya. At first, the dish/stirling system is optimized according to the power output values and the system loss parameters. Then, the layout of the solar field is designed with an installed capacity of 600kW both of SES and WGA-ADDS systems, Upon securing the most suitable layout, the system is modeled for the aforementioned settlements using the optimum output values gathered from the parametric analysis. As a result of the simulation studies, the applicability of this model is discussed according to the power output and the efficiency. Although Turkey is located in an area called "the sun belt" where solar energy technologies can be used, there is no advanced application of these systems. This study aims to discuss the application of these systems in detail and to pave the way for future studies in this field.

  2. Specific systems studies of battery energy storage for electric utilities

    Energy Technology Data Exchange (ETDEWEB)

    Akhil, A.A.; Lachenmeyer, L. [Sandia National Labs., Albuquerque, NM (United States); Jabbour, S.J. [Decision Focus, Inc., Mountain View, CA (United States); Clark, H.K. [Power Technologies, Inc., Roseville, CA (United States)

    1993-08-01

    Sandia National Laboratories, New Mexico, conducts the Utility Battery Storage Systems Program, which is sponsored by the US Department of Energy`s Office of Energy Management. As a part of this program, four utility-specific systems studies were conducted to identify potential battery energy storage applications within each utility network and estimate the related benefits. This report contains the results of these systems studies.

  3. Review of the integrated thermal and nonthermal treatment system studies

    International Nuclear Information System (INIS)

    1996-08-01

    This report contains a review and evaluation of three systems analysis studies performed by LITCO on integrated thermal treatment systems and integrated nonthermal treatment systems for the remediation of mixed low-level waste stored throughout the US Department of Energy weapons complex. The review was performed by an independent team of nine researchers from the Energy and Environmental Research Center, Science Applications International Corporation, the Waste Policy Institute, and Virginia Tech. The three studies reviewed were as follows: Integrated Thermal Treatment System Study, Phase 1--issued July 1994; Integrated Thermal Treatment System Study, Phase 2--issued February 1996; and Integrated Nonthermal Treatment System Study--drafted March 1996. The purpose of this review was to (1) determine whether the assumptions of the studies were adequate to produce an unbiased review of both thermal and nonthermal systems, (2) to identify the critical areas of the studies that would benefit from further investigation, and (3) to develop a standard template that could be used in future studies to assure a sound application of systems engineering

  4. Review of the integrated thermal and nonthermal treatment system studies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-08-01

    This report contains a review and evaluation of three systems analysis studies performed by LITCO on integrated thermal treatment systems and integrated nonthermal treatment systems for the remediation of mixed low-level waste stored throughout the US Department of Energy weapons complex. The review was performed by an independent team of nine researchers from the Energy and Environmental Research Center, Science Applications International Corporation, the Waste Policy Institute, and Virginia Tech. The three studies reviewed were as follows: Integrated Thermal Treatment System Study, Phase 1--issued July 1994; Integrated Thermal Treatment System Study, Phase 2--issued February 1996; and Integrated Nonthermal Treatment System Study--drafted March 1996. The purpose of this review was to (1) determine whether the assumptions of the studies were adequate to produce an unbiased review of both thermal and nonthermal systems, (2) to identify the critical areas of the studies that would benefit from further investigation, and (3) to develop a standard template that could be used in future studies to assure a sound application of systems engineering.

  5. Optimizing the Mobilization of Wireless Communications Systems for Disaster Response Efforts

    Science.gov (United States)

    2015-09-01

    link, and network layers of the OSI model . WAN services are provided by data carriers and telephone companies, such as Comcast and ATT. WAN... network (HFN) deployment teams provide critical services to disaster areas. The coordination and control systems they deploy save lives and valuable...widest geographical area. The Military Wireless Communications Research Group and the Hastily Formed Networks Group at the Naval Postgraduate School

  6. To use the full potential of electric metering - a step towards a more energy effective Sweden; Att utnyttja elmaetarnas potential - ett steg mot ett energieffektivare Sverige

    Energy Technology Data Exchange (ETDEWEB)

    Fonter, Gina; Wiberg, Maria (Royal Inst. of Technology, Stockholm (Sweden))

    2010-04-15

    In line with national and international targets, the electricity market will be characterized by increased use of renewable energy, an increased share of electric plug-in vehicles, engaged consumers, who are conscious of their electricity use and produce their own electricity, and by smarter electricity distribution systems. This will put higher demands for stricter requirements on the available transmission capacity and on the security of supply. Elaborate metering systems is one condition for meeting the challenges facing the electricity market. Electricity metering is also relevant for a range of applications such as remote reading, management of customer relations, demand management and value added services. Utilizing meter data to provide feedback enables use of the electricity metering systems in order to obtain electricity conservation. As of July 2009 the Swedish electricity distributors are required to read and report the electricity use on a monthly basis for all customers with a safety fuse of up to 63 amps. Remote electricity reading is the main function in the current system, which means that the distribution system operator (DSO) is provided with metering data without the need for manual reading and that the customers are charged on a monthly basis for their actual electricity use (rather than an estimate). One reason for the introduction of monthly billing, based on actual electricity use, was to visualize the electricity use to the households. For the electricity use to become visual and controllable, it is important that customers receive feedback on their electricity use. The introduction of monthly billing implied an improvement of the feedback, but it can be further improved in order to allow greater savings. Improved feedback can be given by synthesizing high-resolution data to information presented in new ways, for example by means of in-home-displays, and web-based interfaces combined with counselling. Research shows that the electricity

  7. How systems form and how systems break a beginner’s guide for studying the world

    CERN Document Server

    Ren, Chiang H

    2017-01-01

    Our world is composed of systems within systems—the machines we build, the information we share, the organizations we form, and elements of nature that surround us. Therefore, nearly every field of study and practice embodies behaviors stemming from system dynamics. Yet the study of systems has remained somewhat fragmented based on philosophies, methodologies, and intentions. Many methodologies for analyzing complex systems extend far beyond the traditional framework of deduction evaluation and may, thus, appear mysterious to the uninitiated. This book seeks to dispel the mysteries of systems analysis by holistically explaining the philosophies, methodologies, and intentions in the context of understanding how all types of systems in our world form and how these systems break. This presentation is made at the level of conceptual understanding, with plenty of figures but no mathematical formulas, for the beginning student and interested readers new to studying systems. Through the conceptual understanding pr...

  8. Study on autonomous decentralized-cooperative function monitoring system

    International Nuclear Information System (INIS)

    Matsuoka, Takeshi; Numano, Masayoshi; Someya, Minoru; Fukuto, Junji; Mitomo, Nobuo; Miyazaki, Keiko; Matsukura, Hiroshi; Tanba, Yasuyuki

    1999-01-01

    In this study, a study further advanced on a base of results of study on artificial intelligence for nuclear power', one of nuclear basis crossover studies, conducted at five years planning from 1989 fiscal year was executed. Here was conducted on study on a system technology for supplying cooperation, judgement process, judgement results, and so forth between decentralized artificial intelligent elements (agents) to operation managers (supervisors) by focussing a system for monitoring if autonomous decentralized system containing plant operation and robot group action functioned appropriately. In 1997 fiscal year, by mainly conducting development for displaying working state of robot group, some investigations on integrated management of each function already development and maintained were executed. Furthermore, some periodical meetings on realization of its integration with operation control system and maintenance system with other research institutes were conducted. (G.K.)

  9. Emergent nested systems a theory of understanding and influencing complex systems as well as case studies in urban systems

    CERN Document Server

    Walloth, Christian

    2016-01-01

    This book presents a theory as well as methods to understand and to purposively influence complex systems. It suggests a theory of complex systems as nested systems, i. e. systems that enclose other systems and that are simultaneously enclosed by even other systems. According to the theory presented, each enclosing system emerges through time from the generative activities of the systems they enclose. Systems are nested and often emerge unplanned, and every system of high dynamics is enclosed by a system of slower dynamics. An understanding of systems with faster dynamics, which are always guided by systems of slower dynamics, opens up not only new ways to understanding systems, but also to effectively influence them. The aim and subject of this book is to lay out these thoughts and explain their relevance to the purposive development of complex systems, which are exemplified in case studies from an urban system. The interested reader, who is not required to be familiar with system-theoretical concepts or wit...

  10. Integrated source and channel encoded digital communication system design study

    Science.gov (United States)

    Alem, W. K.; Huth, G. K.; Simon, M. K.

    1978-01-01

    The particular Ku-band carrier, PN despreading, and symbol synchronization strategies, which were selected for implementation in the Ku-band transponder aboard the orbiter, were assessed and evaluated from a systems performance viewpoint, verifying that system specifications were met. A study was performed of the design and implementation of tracking techniques which are suitable for incorporation into the Orbiter Ku-band communication system. Emphasis was placed on maximizing tracking accuracy and communication system flexibility while minimizing cost, weight, and system complexity of Orbiter and ground systems hardware. The payload communication study assessed the design and performance of the forward link and return link bent-pipe relay modes for attached and detached payloads. As part of this study, a design for a forward link bent-pipe was proposed which employs a residual carrier but which is tracked by the existing Costas loop.

  11. Results of an electrical power system fault study (CDDF)

    Science.gov (United States)

    Dugal-Whitehead, N. R.; Johnson, Y. B.

    1993-01-01

    This report gives the results of an electrical power system fault study which has been conducted over the last 2 and one-half years. First, the results of the literature search into electrical power system faults in space and terrestrial power system applications are reported. A description of the intended implementations of the power system faults into the Large Autonomous Spacecraft Electrical Power System (LASEPS) breadboard is then presented. Then, the actual implementation of the faults into the breadboard is discussed along with a discussion describing the LASEPS breadboard. Finally, the results of the injected faults and breadboard failures are discussed.

  12. Review of the integrated thermal and nonthermal treatment system studies

    Energy Technology Data Exchange (ETDEWEB)

    Durrani, H.A.; Schmidt, L.J.; Erickson, T.A.; Sondreal, E.A.; Erjavec, J.; Steadman, E.N.; Fabrycky, W.J.; Wilson, J.S.; Musich, M.A.

    1996-07-01

    This report analyzes three systems engineering (SE) studies performed on integrated thermal treatment systems (ITTSs) and integrated nonthermal treatment systems (INTSs) for the remediation of mixed low-level waste (MLLW) stored throughout the US Department of Energy (DOE) weapons complex. The review was performed by an independent team of nine researchers from the Energy and Environmental Research Center (EERC), Science Applications International Corporation (SAIC), the Waste Policy Institute (WPI), and Virginia Tech (VT). The three studies reviewed were as follows: Integrated Thermal Treatment System Study, Phase 1--issued July 1994; Integrated Thermal Treatment System Study, Phase 2--issued February 1996; and Integrated Nonthermal Treatment System Study--drafted March 1996. The purpose of this review was to (1) determine whether the assumptions taken in the studies might bias the resulting economic evaluations of both thermal and nonthermal systems, (2) identify the critical areas of the studies that would benefit from further investigation, and (3) develop a standard template that could be used in future studies to produce sound SE applications.

  13. Preliminary studies for the LHCb vertex detector vacuum system

    CERN Document Server

    Doets, M; Van Bakel, N; Van den Brand, J F J; van den Brand, Jo

    2000-01-01

    We lay down some general considerations which will serve as a starting point for design studies of a realistic LHCb vertex detector vacuum system. Based on these considerations, we propose a design strategy and identify issues to be further studied. In particular we try to outline some boundary conditions imposed by LHC and LHCb on the vacuum system. We discuss two possibilities for the LHCb vertex detector vacuum system. The preferred strategy uses a differentially pumped vacuum system with the silicon detectors separated from the beam line vacuum. Some estimations on static vacuum pressures and gas flows are presented.

  14. Maintenance study for W-340 Waste Retrieval System

    International Nuclear Information System (INIS)

    Christensen, C.; Conner, C.C.; Sekot, J.P.

    1994-05-01

    This study was performed to identify attributes and maintainability requirements for the Tank Waste Retrieval System (TWRS). The system will be developed for Westinghouse Hanford Company in Richland, Washington, as an integrated system to perform waste removal in Tank C-106 and, thus, demonstrate technologies for tank remediation that will satisfy requirements of the Tri-Party Agreement. The study examines attributes of the TWRS, scope of maintenance operations required for the TWRS, maintenance requirements, and potential methods of performing maintenance functions. Recommendations are provided for consideration in the development of both the conceptual design and performance specification, which will be used in procuring the W-340 Waste Retrieval System

  15. Review of the integrated thermal and nonthermal treatment system studies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-10-01

    This report contains a review and evaluation of three systems analysis studies performed by LITCO on integrated thermal treatment systems and integrated nonthermal treatment systems for the remediation of mixed low-level waste stored throughout the US Department of Energy weapons complex. The review was performed by an independent team of nine researchers from the Energy and Environmental Research Center, Science Applications International Corporation, the Waste Policy Institute, and Virginia Tech. The purpose of this review was to (1) determine whether the assumptions of the studies were adequate to produce an unbiased review of both thermal and nonthermal systems, (2) to identify the critical areas of the studies that would benefit from further investigation, and (3) to develop a standard template that could be used in future studies to assure a sound application of systems engineering.

  16. Review of the integrated thermal and nonthermal treatment system studies

    International Nuclear Information System (INIS)

    1996-01-01

    This report contains a review and evaluation of three systems analysis studies performed by LITCO on integrated thermal treatment systems and integrated nonthermal treatment systems for the remediation of mixed low-level waste stored throughout the US Department of Energy weapons complex. The review was performed by an independent team of nine researchers from the Energy and Environmental Research Center, Science Applications International Corporation, the Waste Policy Institute, and Virginia Tech. The purpose of this review was to (1) determine whether the assumptions of the studies were adequate to produce an unbiased review of both thermal and nonthermal systems, (2) to identify the critical areas of the studies that would benefit from further investigation, and (3) to develop a standard template that could be used in future studies to assure a sound application of systems engineering

  17. Conceptual design and systems analysis of photovoltaic systems. Volume II. Study results. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Kirpich, A.

    1977-03-19

    This investigation of terrestrial PV systems considered the technical and economic feasibility for systems in three size categories: a small system of about 12 kW peak output for on-site residential use; a large 1500 MW central power plant contributing to the bulk energy of a utility system power grid; and an intermediate size system of about 250 kW for use on public or commercial buildings. In each category, conceptual designs were developed, performance was analyzed for a range of climatic regions, economic analyses were performed, and assessments were made of pertinent institutional issues. The report consists of three volumes. Volume I contains a Study Summary of the major study results. This volume contains the detailed results pertaining to on-site residential photovoltaic systems, central power plant photovoltaic systems, and intermediate size systems applied to commercial and public buildings. Volume III contains supporting appendix material. (WHK)

  18. Conceptual modular description of the high-level waste management system for system studies model development

    Energy Technology Data Exchange (ETDEWEB)

    McKee, R.W.; Young, J.R.; Konzek, G.J.

    1992-08-01

    This document presents modular descriptions of possible alternative components of the federal high-level radioactive waste management system and the procedures for combining these modules to obtain descriptions for alternative configurations of that system. The 20 separate system component modules presented here can be combined to obtain a description of any of the 17 alternative system configurations (i.e., scenarios) that were evaluated in the MRS Systems Studies program (DOE 1989a). First-approximation descriptions of other yet-undefined system configurations could also be developed for system study purposes from this database. The descriptions include, in a modular format, both functional descriptions of the processes in the waste management system, plus physical descriptions of the equipment and facilities necessary for performance of those functions.

  19. Psa study of ETRR-2 Gadolinium injection system

    International Nuclear Information System (INIS)

    El-Messiry, A.M.; Moustafa, A.M.

    1999-01-01

    one of the main safety feature of ETRR-2, egypt test and reactor 3 2 (new reactor), is the use of a redundant and diverse shutdown systems, called second shutdown system SSS. This system operates through injection of a high absorbing material, gadolinium Gd solution, into four rectangular chambers surrounding the reactor core. In view of the fact that the core is super-moderated, the injected neutron poison between the core and the reflector will cause an immediate reactor shutdown. The SSS triggers due to: manual, seismic, fails of actuation of the first shutdown system FSS, or high power neutron flux signal. Because of safety importance of this new system design, the present probabilistic safety assessment PDA study is initiated. The study carried ou in view of the system acceptable unavailability together with the effects of failure probabilities of relevant parameters and basic events. The effect of system design modifications (remove of high power signal and addition of nitrogen filtering line) on reactor safety and system unavailability is analyzed. A new proposed PSA model which take into consideration all possible failure modes of the system components is developed. The results show that the modification done on the system improves its unavailability while increases the minimal cut sets. The proposed model unavailability is greater (bad) than the designer model (That contains many hypothesis). human error contribution on system unavailability is reflected on failure type of gadolinium concentration. The IAEA psa pack IV code is utilized for calculation purposes

  20. Tracking studies of the Compact Linear Collider collimation system

    International Nuclear Information System (INIS)

    Agapov, I.; Burkhardt, H.; Schulte, D.; Latina, A.; Blair, G.A.; Malton, S.; Resta-Lopez, J.

    2009-01-01

    A collimation system performance study includes several types of computations performed by different codes. Optics calculations are performed with codes such as MADX, tracking studies including additional effects such as wakefields, halo and tail generation, and dynamical machine alignment are done with codes such as PLACET, and energy deposition can be studied with BDSIM. More detailed studies of hadron production in the beam halo interaction with collimators are better performed with GEANT4 and FLUKA. A procedure has been developed that allows one to perform a single tracking study using several codes simultaneously. In this paper we study the performance of the Compact Linear Collider collimation system using such a procedure

  1. "Att bli skapande av det nya" : Fem dramapedgogers uppfattningar av drama som verktyg i vuxnas lärande för hållbar utveckling

    OpenAIRE

    Fries, Julia

    2016-01-01

    This dissertation gives a back-ground presenting what Education for Sustainable Development (ESD) and pedagogical drama is, and it presents research on drama-use in ESD. The aim of the study is to explore drama as a tool in adult learning for sustainable development, in a Western context. The assumption is made that drama does have a potential as a tool in learning for sustainable development, and the question of how is raised. The study has a qualitative approach and by interviewing five dra...

  2. A prospective study to evaluate the utility of bronchoalveolar lavage by fiberoptic bronchoscopy in sputum smear negative patients with high suspicion of pulmonary tuberculosis

    Directory of Open Access Journals (Sweden)

    Ritesh Kamal

    2012-01-01

    Full Text Available Aim: To evaluate the utility of bronchoalveolar lavage (BAL by flexible fiberoptic bronchoscopy (FOB in sputum smear negative patients with clinical and radiological characteristics of pulmonary tuberculosis (PTB. Materials and Methods: This prospective study was carried out in 30 sputum smear negative patients of age group 20 to 70 years, who were highly suspicious for PTB by clinical and radiographic criteria. All patients were subjected to sputum culture, BAL stains and cultures, and cytopathology. Patients with moderate to massive pleural effusion, obvious accessible lymph node, history of antitubercular therapy (ATT, and contraindication to FOB were excluded. Results: Sputum culture for acid fast bacilli (AFB was positive in four (12% patients, BAL fluid was positive for Ziehl-Neelsen (ZN stain in nine (27% patients, including four sputum culture patients, while BAL culture for AFB on Lowenstein-Jensen (LJ medium was positive in 18 (60%, including 9 BAL fluid ZN stain positive patients. Six (20% patients had growth on pyogenic culture, while two (7% patients had malignant cell on cytological examination of BAL fluid. Remaining four (13% patients were empirically started on ATT. They had complete response to ATT at 2 months and were retrospectively diagnosed with pulmonary tuberculosis (PTB. All the bacteriologically confirmed PTB patients were given ATT for 6 months and all patients had complete response. Conclusion: We concluded that FOB guided BAL is extremely useful for establishing diagnosis of PTB or other pulmonary diseases in sputum smear negative patients, who have high suspicion for PTB by clinical and radiographic criteria.

  3. Luhmanns masmedieteori och Internet som ett artificiellt intelligent semiotiskt system Luhmanns massmedieteori och Internet som ett artificiellt intelligent semiotiskt system [Luhmann’s mass-media theory and Internet as an artificial intelligent semiotic system

    Directory of Open Access Journals (Sweden)

    Peter Kåhre

    2010-11-01

    Full Text Available Artikeln diskuterar hur en modern form av AI-programmering, som kallas Konnektionism i en design som kallas Distribuerad AI (DAI, påverkar den uppfattning Luhmann har om massmediernas roll för den andra ordningens observationer. DAI använder noder för att skapa aktivitet i systemen och inte de koder som styr processerna i den klassiska eller symboliska formen av AI. Luhmanns teori kan utvecklas genom att ersätta systemens koder med noder som förändras beroende på i vilken relation de står till andra noder. På så sätt kan kommunikationsbegreppet utvecklas så att det också omfattar systemens interaktioner med omvärlden. Det skapar en bättre förutsättning för att observationsmöjligheter direkt uppstår genom systemens relationer till omvärlden. Internet och AI-programmerade söksystem och robotar kan då fungera som ett artificiellt semiotiskt system som skapar möjligheter att göra observationer.The article discusses how a modern form of AI programming, known as Connectionism in a design known as Distributed Artificial Intelligence (DAI, affects the perception Luhmann has on mass media's role concerning second-order observations. DAI uses nodes to create activity in the systems and not the codes used by the Classic or Symbolic form of AI. Luhmann’s theory can be developed by replacing the systems codes with nodes that change depending on their relations to other nodes. In this way, we can reformulate the concept of communication, so that it includes the systems interactions with the environment. It creates better conditions so that observing opportunities may arise directly from these interactions. Internet and AI-programmed search systems and robots can then act as an artificial semiotic system that creates opportunities for making observations.

  4. Att undervisa i teknik – försök till en utbildningsfilosofi utifrån Heidegger och Dewey

    Directory of Open Access Journals (Sweden)

    Eva Blomdahl

    2012-12-01

    Full Text Available This paper presents an attempt to articulate a philosophy of education with respect to technology.The guiding idea is that the primary aim of technology education should be to help pupils to reflecton the nature of technology as a social and cultural phenomenon, as regards its effects on individuals,their society and the environment. Bearing in mind Heidegger’s ideas on the essence of technologyand Dewey’s philosophy of education, a notion of technology education as “technology re-presentation”is introduced. This process centres on the visualisation or construction of technical systems andartefacts with a view to understanding them in the way indicated above. As far as the nature of thisunderstanding is concerned, directives are given by Heidegger’s idea of a reflection (Besinnung onthe impact of technology on our present world-view and by Dewey’s concept of “reflective thinking”,which refers to the insight into the relation between our actions and their consequences.

  5. A study of fault injection in multichannel spacecraft power systems

    Science.gov (United States)

    Dugal-Whitehead, Norma R.; Johnson, Yvette B.

    1991-01-01

    NASA/Marshall Space Flight Center proposes to implement fault injection into an electrical power system breadboard to study the reactions of the various control elements of this breadboard. Among the elements to be studied are the remote power controllers, the algorithms in the control computers, and the artificially intelligent control programs resident in this breadboard. To this end, a study of electrical power is being performed to yield a list of the most common power system faults. The results of this study are being applied to a multichannel high-voltage DC spacecraft power system called the Large Autonomous Spacecraft Electrical Power System Breadboard. Some of the reactions of the breadboard to some of the faults which have been encountered are presented along with the results of this study.

  6. A study of fault injection in multichannel spacecraft power systems

    Science.gov (United States)

    Dugal-Whitehead, Norma R.; Johnson, Yvette B.

    NASA/Marshall Space Flight Center proposes to implement fault injection into an electrical power system breadboard to study the reactions of the various control elements of this breadboard. Among the elements to be studied are the remote power controllers, the algorithms in the control computers, and the artificially intelligent control programs resident in this breadboard. To this end, a study of electrical power is being performed to yield a list of the most common power system faults. The results of this study are being applied to a multichannel high-voltage DC spacecraft power system called the Large Autonomous Spacecraft Electrical Power System Breadboard. Some of the reactions of the breadboard to some of the faults which have been encountered are presented along with the results of this study.

  7. Generic 12-Bus Test System for Wind Power Integration Studies

    DEFF Research Database (Denmark)

    Adamczyk, Andrzej Grzegorz; Altin, Müfit; Göksu, Ömer

    2012-01-01

    High wind power penetration levels into power systems requires an appropriate power system model when assessing impact on the overall system stability. The model should capture the wide range of dynamics related to the wind integration studies, such as voltage control, synchronizing power control......, inertial response, frequency control, damping of electromechanical oscillations, balanced and unbalanced fault management, etc. Hence, the power system components: conventional power plants with controls, transmission lines, transformers and loads should be represented accurately to achieve realistic power...... system characteristics. Additionally, the power system model should be simple and computationally manageable in order to simulate multiple scenarios with different control parameters in a reasonable time. In this paper, a generic power system model is presented in order to comprehend the wind integration...

  8. Exergy performance of different space heating systems: A theoretical study

    DEFF Research Database (Denmark)

    Kazanci, Ongun Berk; Shukuya, Masanori; Olesen, Bjarne W.

    2016-01-01

    Three space heating systems (floor heating with different floor covering resistances, radiator heating with different working temperatures, warm-air heating with and without heat recovery) were compared using a natural gas fired condensing boiler as the heat source. For the floor heating systems......, the effects of floor covering resistance on the whole system performance were studied using two heat sources; a natural gas fired condensing boiler and an air-source heat pump. The heating systems were also compared in terms of auxiliary exergy use for pumps and fans. The low temperature floor heating system...... performed better than other systems in terms of exergy demand. The use of boiler as a heat source for a low-exergy floor heating system creates a mismatch in the exergy supply and demand. Although an air-source heat pump could be a better heat source, this depends on the origin of the electricity supplied...

  9. A comparative study of two different clear aligner systems.

    Science.gov (United States)

    Ercoli, Federica; Tepedino, Michele; Parziale, Vincenzo; Luzi, Cesare

    2014-05-02

    This study aims to compare the 'Nuvola®' system with 'Fantasmino®' system, examine their material properties, and define the indications for use of the aligners. Two groups of patients were selected and were respectively treated with Nuvola® aligner and Fantasmino® system. The goal of treatment has been achieved with the two systems. The two types of aligners have shown differences during the treatment. Fantasmino® system has elastic properties of high performance, but its size does not encourage compliance throughout the day. Nuvola® system determines good tooth movement and its size facilitates the patient's collaboration. In both aligner systems, difficulties were found in the correction of torque information and rotations.

  10. Point systems in Games for Health: A bibliometric scoping study

    OpenAIRE

    Kokol, Peter

    2018-01-01

    Very few details about point systems used in games for health are reported in scientific literature. To shed some light on this topic a bibliometric study, analyzing the papers containing terms related to games for health and point systems was performed and a mini taxonomy was derived. The search string game* AND health AND (point* OR score) AND system* in a Scopus bibliographic database was used to produce the corpus. We limited the search to articles, reviews and conference papers written i...

  11. Study of some model quantum systems in two dimensions

    Science.gov (United States)

    Banerjee, Dhruba; Bhattacharjee, Jayanta K.

    2013-03-01

    The quantum mechanics of two separate two-dimensional (2D) systems are studied and their consequences analysed. The systems discussed commonly occur in undergraduate courses, but we make a pedagogic survey of some interesting consequences which can be derived from them. The systems considered are the 2D isotropic oscillator and rotational motion in magnetic fields and harmonic traps. The 2D oscillator provides interestingly enough a solution to the one-dimensional problem of the isotonic oscillator.

  12. Eastern Cape hybrid mini-grid systems - a case study

    CSIR Research Space (South Africa)

    Szewczuk, S

    2010-05-01

    Full Text Available -GRID SYSTEMS A CASE STUDY WIND POWER AFRICA 2010 S Szewczuk CSIR May 2010 PRESENTATION OUTLINE • Rationale for Projects • Renewable Energy for Rural Electrification in E Cape • Integrated Energy/Economic Framework • Hybrid mini-grid energy systems... investigated: wind, mini-hydro & biomass • Geographic Information Systems (GIS) to present & interpret results • Output: identification of implementable projects – emphasis on objective technological evaluations Wind assessment at 60 m height Example...

  13. Some Applications of Holography to Study Strongly Correlated Systems

    Directory of Open Access Journals (Sweden)

    Bhatnagar Neha

    2018-01-01

    Full Text Available In this work, we study the transport coefficients of strongly coupled condensed matter systems using gauge/gravity duality (holography. We consider examples from the real world and evaluate the conductivities from their gravity duals. Adopting the bottom-up approach of holography, we obtain the frequency response of the conductivity for (1+1-dimensional systems. We also evaluate the DC conductivities for non-relativistic condensed matter systems with hyperscaling violating geometry.

  14. ATT FÖRHINDRA OCH BEGRÄNSA HOTELLBRÄNDER : Erfarenhetsåterföring från hotellbrand i Sverige och England

    OpenAIRE

    Södergren, Gabriella

    2014-01-01

    Background: Hotels are considered a risky environment because guests are not expected to be awake and are expected to have poor local knowledge. Although hotels doesn’t have acceptable fire protection according to the only previously known study in this area. This is a problem because every four to five days there is a hotel fire. The hotels would be able to reach an acceptable fire safety by pursuing a systematic fire protection and take certain construction actions. Aim: Identifying detail...

  15. Att ta sig an världen : Lärare diskuterar innehåll och mål i samhällskunskapsämnet

    OpenAIRE

    Sandahl, Johan

    2011-01-01

    The focus of this investigation is civics in the Swedish upper secondary school. In addition to subject matter, civics is also an agent for democratic socialisation. The study explores and analyses the reflections of six teachers on their teaching about globalisation. These reflections, or voices, are researched through interviews and classroom observations. The starting point is the teachers’ description of content and goals in their teaching. The overall aim is to identify and analyse first...

  16. Enhancing Systems Engineering Education Through Case Study Writing

    Science.gov (United States)

    Stevens, Jennifer Stenger

    2016-01-01

    Developing and refining methods for teaching systems engineering is part of Systems Engineering grand challenges and agenda for research in the SE research community. Retention of systems engineering knowledge is a growing concern in the United States as the baby boom generation continues to retire and the faster pace of technology development does not allow for younger generations to gain experiential knowledge through years of practice. Government agencies, including the National Aeronautics and Space Administration (NASA), develop their own curricula and SE leadership development programs to "grow their own" systems engineers. Marshall Space Flight Center (MSFC) conducts its own Center-focused Marshall Systems Engineering Leadership Development Program (MSELDP), a competitive program consisting of coursework, a guest lecture series, and a rotational assignment into an unfamiliar organization engaged in systems engineering. Independently, MSFC developed two courses to address knowledge retention and sharing concerns: Real World Marshall Mission Success course and its Case Study Writers Workshop and Writers Experience. Teaching case study writing and leading students through a hands-on experience at writing a case study on an SE topic can enhance SE training and has the potential to accelerate the transfer of experiential knowledge. This paper is an overview of the pilot experiences with teaching case study writing, its application in case study-based learning, and identifies potential areas of research and application for case study writing in systems engineering education.

  17. Simplified drive system models for power system transient studies in industrial plants

    DEFF Research Database (Denmark)

    Chen, Peiyuan; Sannino, Ambra

    2007-01-01

    In order to simulate industrial plants for different power system transient studies, simplified adjustable speed drive (ASD) models are needed. For power system transient studies such as assessing the voltage dip ride-through capability of ASDs, detailed representation of semiconductor valve...

  18. Measuring mobile patient safety information system success: an empirical study.

    Science.gov (United States)

    Jen, Wen-Yuan; Chao, Chia-Cheng

    2008-10-01

    The Health Risk Reminders and Surveillance (HRRS) system was designed to deliver critical abnormal test results of severely ill patients from Laboratory, Radiology, and Pathology departments to physicians within 5 min using cell phone text messages. This paper explores the success of the HRRS system. This study employed an augmented version of the DeLone and McLean IS success model. Seven variables (system quality, information quality, system use, user satisfaction, mobile healthcare anxiety, impact on the individual and impact on the organization) were used to evaluate the success of the HRRS system. The interrelationships between the seven variables were hypothesized and the hypotheses were empirically tested. The results indicate that the information quality of the HRRS system is positively associated with both system use and user satisfaction. In addition, system use is positively associated with user satisfaction, which is also positively associated with mobile healthcare anxiety. Moreover, results indicate that impact on the individual is positively associated with both user satisfaction and mobile healthcare anxiety. Finally, the impact of the organization is positively associated with impact on the individual. The results of the study provide an expanded understanding of the factors that contribute to mobile patient safety information system (IS) success. Implications of the relationship between system use and physician mobile healthcare anxiety are discussed.

  19. Study on autonomous decentralized-cooperative function monitoring system

    International Nuclear Information System (INIS)

    Matsuoka, Takeshi; Numano, Masayoshi; Someya, Minoru; Fukuto, Junji; Mitomo, Nobuo; Miyazaki, Keiko; Matsukura, Hiroshi

    1998-01-01

    In this study, on a base of result of a nuclear substrate cross-over study on 'Artificial intelligence for nuclear plant' promoted by 5 years plan since 1989 fiscal year, further developed studies are conducted. The studies are promoted by next 5 years plan on following 6 items: (1) Study on stratified expression technique of autonomous function. (2) Study on expression technique of motion state in decentralized-cooperative function. (3) Study on expression technique of decision making process. (4) Integration to operation control system. (5) Integration to maintenance system. And, (6) Comprehensive evaluation experiment. In 1996 fiscal year, improvement and investigation on automatic classification function of plant state were executed. And, preparation of development environment for expression of robot group motion state was conducted. Furthermore, communication experiment using network to realize integration to operation control and maintenance systems and periodical meetings with other institutes were conducted. (G.K.)

  20. Guidelines for Conducting Positivist Case Study Research in Information Systems

    Directory of Open Access Journals (Sweden)

    Graeme Shanks

    2002-11-01

    Full Text Available The case study research approach is widely used in a number of different ways within the information systems community. This paper focuses on positivist, deductive case study research in information systems. It provides clear definitions of important concepts in positivist case study research and illustrates these with an example research study. A critical analysis of the conduct and outcomes of two recently published positivist case studies is reported. One is a multiple case study that validated concepts in a framework for viewpoint development in requirements definition. The other is a single case study that examined the role of social enablers in enterprise resource planning systems implementation. A number of guidelines for successfully undertaking positivist case study research are identified including developing a clear understanding of key concepts and assumptions within the positivist paradigm; providing clear and unambiguous definitions of the units and interactions when using any theory; carefully defining the boundary of the theory used in the case study; using hypotheses rather than propositions in the empirical testing of theory; using fuzzy or probabilistic propositions in recognising that reality can never be perfectly known; selecting case studies carefully, particularly single case studies; and recognising that generalisation from positivist, single case studies is inherently different from generalisation from single experiments. When properly undertaken, positivist, deductive case study research is a valuable research approach for information systems researchers, particularly when used within pluralist research programs that use a number of different research approaches from different paradigms.

  1. A Multiprocessor Operating System Simulator

    Science.gov (United States)

    Johnston, Gary M.; Campbell, Roy H.

    1988-01-01

    This paper describes a multiprocessor operating system simulator that was developed by the authors in the Fall semester of 1987. The simulator was built in response to the need to provide students with an environment in which to build and test operating system concepts as part of the coursework of a third-year undergraduate operating systems course. Written in C++, the simulator uses the co-routine style task package that is distributed with the AT&T C++ Translator to provide a hierarchy of classes that represents a broad range of operating system software and hardware components. The class hierarchy closely follows that of the 'Choices' family of operating systems for loosely- and tightly-coupled multiprocessors. During an operating system course, these classes are refined and specialized by students in homework assignments to facilitate experimentation with different aspects of operating system design and policy decisions. The current implementation runs on the IBM RT PC under 4.3bsd UNIX.

  2. A Comparative Study of Electronic Performance Support Systems

    Science.gov (United States)

    Nguyen, Frank; Klein, James D.; Sullivan, Howard

    2005-01-01

    Electronic performance support systems (EPSS) deliver relevant support information to users while they are performing tasks. The present study examined the effect of different types of EPSS on user performance, attitudes, system use and time on task. Employees at a manufacturing company were asked to complete a procedural software task and…

  3. Model validation studies of solar systems, Phase III. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Lantz, L.J.; Winn, C.B.

    1978-12-01

    Results obtained from a validation study of the TRNSYS, SIMSHAC, and SOLCOST solar system simulation and design are presented. Also included are comparisons between the FCHART and SOLCOST solar system design programs and some changes that were made to the SOLCOST program. Finally, results obtained from the analysis of several solar radiation models are presented. Separate abstracts were prepared for ten papers.

  4. Bayesian approach in the power electric systems study of reliability ...

    African Journals Online (AJOL)

    This work aims to highlight prerogatives and advantages of the Bayesian approach in the reliability studies of the modern power electrical ... technological innovation make the data more uncertain related to the operation of the electric systems components, with the ...... Rocco S. C.M. & Klindt W., 1998. Distribution Systems ...

  5. Studying chemical reactions in biological systems with MBN Explorer

    DEFF Research Database (Denmark)

    Sushko, Gennady B.; Solov'yov, Ilia A.; Verkhovtsev, Alexey V.

    2016-01-01

    The concept of molecular mechanics force field has been widely accepted nowadays for studying various processes in biomolecular systems. In this paper, we suggest a modification for the standard CHARMM force field that permits simulations of systems with dynamically changing molecular topologies....

  6. C++ and operating systems performance - A case study

    Science.gov (United States)

    Russo, Vincent F.; Madany, Peter W.; Campbell, Roy H.

    1990-01-01

    Object-oriented design and programming has many software engineering advantages. Its application to large systems, however, has previously been constrained by performance concerns. The Choices operating system, which has over 75,000 lines of code, is object-oriented and programmed in C++. This paper is a case study of the performance of Choices.

  7. Studying the Impacts of Globalization on Iranian Education System

    Science.gov (United States)

    Chahardahcheriki, Mitra Abdolahi; Shahi, Sakine

    2012-01-01

    The purpose of this study is to analyze the degree of globalization of important indicators of education system in Iran including teaching approaches, educational tools and facilities, curriculums and contents, and education management. Findings suggest that the situation of Iranian education system has some distance with the globalized level and…

  8. A study on switched linear system identification using game ...

    African Journals Online (AJOL)

    This study deals with application of game-theoretic strategies and neural computing to switched linear system identification, wherein some of the subsystems may be in failed, standby, or working states. The controller is to detect failed subsystems, and switch standby and working subsystems to maintain stable system ...

  9. Automation of library system: A study of John Harris library ...

    African Journals Online (AJOL)

    This study cover ed the automation of Circulation and OPAC operation of John Harris library, University of Benin. System analysis of the existing system was carried out; the elicited information was employed in building a web - based application programme, designed, developed a nd implemented in PHP and MySQL ...

  10. Systems Operation Studies for Automated Guideway Transit Systems - Classification and Definition of AGT Systems

    Science.gov (United States)

    1980-02-01

    The report describes the development of an AGT classification structure. Five classes are defined based on three system characteristics: service type, minimum travelling unit capacity, and maximum operating velocity. The five classes defined are: Per...

  11. Mécanisme d'absorption de puissance et transfert énergétique dans un atténuateur à gaz du rayonnement X

    OpenAIRE

    Martín Ortega, Álvaro

    2017-01-01

    The work done in the context of this thesis focuses in the study of an X-ray gas attenuator and the plasma produced within. An X-ray gas attenuator consists on a vessel filled with gas, usually argon or krypton at a few hundreds millibars, that absorbs the low energy fraction of a synchrotron X-ray spectrum, reducing the power received by downstream optical elements without affecting the properties of the high energy part of the spectrum. The absorption of the photons creates a region of hot,...

  12. Att göra nya val - om nätverkets delaktighet i ungdomars väg ut ur ett missbruk

    OpenAIRE

    Koser, Lisa

    2009-01-01

     The aim of this study was to examine how young people, who have been treated for their misuse and/or to learn to handle a parent's misuse, portrayed the network's implication in their wishes about improving their lives, to make new choices. The network included members of nuclear family, relatives, important persons at school/work and friends. The “professional network” (therapists and social workers) also became a part in the young people's life during a period. The main issues of this stud...

  13. Experimental studies and modeling of an information embedded power system

    Science.gov (United States)

    Carullo, Stephen Paul

    This thesis develops a model of an electrical power system, with its inherent embedded communication system, for studying the characteristics of power system measurement errors due to communication delays. This model is referred to as an "information embedded power system" to emphasize the addition of a model of the communication system, that delivers measurements to a control center, to the standard model for the energy balance within the power system. These power system measurements are delivered across an Ethernet computer control network. An experimental platform was created in order to experimentally measure and characterize measurement delay errors (MDEs) in this information embedded power system. Several stochastic system models are developed, which are composed of both the physical infrastructure of the power system as well as the embedded computer network communication infrastructure. Both white noise and colored noise models are used to characterize MDEs. This type of analysis is an extension of traditional observability approaches, which usually only assume deterministic steady-state conditions in the power system and do not consider time delays in delivering measurements. The experimental platform is used to validate the developed model.

  14. Systems Studies Department FY 78 activity report. Volume 2. Systems analysis

    International Nuclear Information System (INIS)

    Gold, T.S.

    1979-02-01

    The Systems Studies Department at Sandia Laboratories Livermore (SLL) has two primary responsibilities: to provide computational and mathematical services and to perform systems analysis studies. This document (Volume 2) describes the FY Systems Analysis highlights. The description is an unclassified overview of activities and is not complete or exhaustive. The objective of the systems analysis activities is to evaluate the relative value of alternative concepts and systems. SLL systems analysis activities reflect Sandia Laboratory programs and in 1978 consisted of study efforts in three areas: national security: evaluations of strategic, theater, and navy nuclear weapons issues; energy technology: particularly in support of Sandia's solar thermal programs; and nuclear fuel cycle physical security: a special project conducted for the Nuclear Regulatory Commission. Highlights of these activities are described in the following sections. 7 figures

  15. STUDYING FOREST ROOT SYSTEMS - AN OVERVIEW OF METHODOLOGICAL PROBLEMS

    Science.gov (United States)

    The study of tree root systems is central to understanding forest ecosystem carbon and nutrient cycles, nutrient and water uptake, C allocation patterns by trees, soil microbial populations, adaptation of trees to stress, soil organic matter production, etc. Methodological probl...

  16. A Study of Transport Airplane Crash-Resistant Fuel Systems

    National Research Council Canada - National Science Library

    Robertson, S

    2002-01-01

    ...), of transport airplane crash-resistant fuel system (CRFS). The report covers the historical studies related to aircraft crash fires and fuel containment concepts undertaken by the FAA, NASA, and the U.S...

  17. Alpha low-level stored waste systems design study

    International Nuclear Information System (INIS)

    Feizollahi, F.; Teheranian, B.

    1992-08-01

    The Stored Waste System Design Study (SWSDS), commissioned by the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examines relative life-cycle costs associated with three system concepts for processing the alpha low-level waste (alpha-LLW) stored at the Radioactive Waste Management Complex's Transuranic Storage Area at the INEL. The three system concepts are incineration/melting; thermal treatment/solidification; and sort, treat, and repackage. The SWSDS identifies system functional and operational requirements and assesses implementability; effectiveness; cost; and demonstration, testing, and evaluation (DT ampersand E) requirements for each of the three concepts

  18. Alpha low-level stored waste systems design study

    Energy Technology Data Exchange (ETDEWEB)

    Feizollahi, F.; Teheranian, B. [Morrison Knudson Corp., San Francisco, CA (United States). Environmental Services Div.; Quapp, W.J. [EG and G Idaho, Inc., Idaho Falls, ID (United States)

    1992-08-01

    The Stored Waste System Design Study (SWSDS), commissioned by the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examines relative life-cycle costs associated with three system concepts for processing the alpha low-level waste (alpha-LLW) stored at the Radioactive Waste Management Complex`s Transuranic Storage Area at the INEL. The three system concepts are incineration/melting; thermal treatment/solidification; and sort, treat, and repackage. The SWSDS identifies system functional and operational requirements and assesses implementability; effectiveness; cost; and demonstration, testing, and evaluation (DT&E) requirements for each of the three concepts.

  19. Alpha low-level stored waste systems design study

    Energy Technology Data Exchange (ETDEWEB)

    Feizollahi, F.; Teheranian, B. (Morrison Knudson Corp., San Francisco, CA (United States). Environmental Services Div.); Quapp, W.J. (EG and G Idaho, Inc., Idaho Falls, ID (United States))

    1992-08-01

    The Stored Waste System Design Study (SWSDS), commissioned by the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examines relative life-cycle costs associated with three system concepts for processing the alpha low-level waste (alpha-LLW) stored at the Radioactive Waste Management Complex's Transuranic Storage Area at the INEL. The three system concepts are incineration/melting; thermal treatment/solidification; and sort, treat, and repackage. The SWSDS identifies system functional and operational requirements and assesses implementability; effectiveness; cost; and demonstration, testing, and evaluation (DT E) requirements for each of the three concepts.

  20. Report on task I: fire protection system study

    International Nuclear Information System (INIS)

    Bernard, E.A.; Cano, G.L.

    1977-02-01

    This study (1) evaluates, on a comparative basis, the national and international regulatory and insurance standards that serve as guidance for fire protection within the nuclear power industry; (2) analyzes the recommendations contained in the major reports on the Browns Ferry Fire; (3) proposes quantitative safety goals and evaluation methods for Nuclear Power Plant Fire Protection Systems (NPPFPS); (4) identifies potential improvements that may be incorporated into NPPFPS; and (5) recommends a plan of action for continuation of the fire protections systems study

  1. Comparative Study of Algorithms (MPPT) Applied to Photovoltaic Systems

    OpenAIRE

    DRIS, MIDA; DJILANI, BEN ATTOUS; DJILANI, Benattous

    2016-01-01

    This work presents a theoretical study of maximum power point tracking (MPPT) for photovoltaic (PV) system. The study includes discussion of three MPPT algorithms (the Perturbation and Observation, Incremental Conductance and the Fractional open circuit voltage) and perform comparative tests between them using actual irradiance data. First the PV system with resistive load is discussed, the modelling and the simulation of the PV generator, the DC/DC converter and the three MPPT algorithms are...

  2. The JABE project: geological studies with a backpack drilling system.

    Science.gov (United States)

    Jago, Alban; van Vynckt, Delphine; de Crombrugghe, Guerric; Denies, Jonathan; Le Maire, Victor; Reydams, Marc

    Besides those geological surveys, we will also study how this drilling system could be used to fix some installations on the ground. As part of the JUMP mission we are also developing a cosmic ray detector and a radio telescope. Those experiments have to be securely fixed and this is what we will try to do using the backpack drilling system and EVA's suits. We shall report on the science and technical results, and implications for Earth-Mars compar-ative studies.

  3. Characterization and evaluation studies on some JAERI dosimetry systems

    International Nuclear Information System (INIS)

    Kojima, T.; Sunaga, H.; Tachibana, H.; Takizawa, H.; Tanaka, R.

    2000-01-01

    Characterization and evaluation studies were carried out on some JAERI dosimetry systems, mainly alanine-ESR, in terms of the influence on the dose response of parameters such as orientation at ESR analysis, and the temperature during irradiation and analysis. Feasibility study for application of these dosimetry systems to electrons with energies lower than 4 MeV and bremsstrahlung (X rays) was also performed parallel to their reliability check through international dose intercomparison. (author)

  4. Study of National Electric System equipment until 2000 year

    International Nuclear Information System (INIS)

    1980-01-01

    The report by the German firm Lahmeyer International is about the historical development of the supply of Electric Power, description of the current system, previous studies, organization, power plants, hydroelectric plants and existing construction, transmission system, hydrological studies and water resources, operation of hydro thermal generation, medium-term demand, energy sources and generation in the medium term, list of thermal plants, evaluation of alternative equipment plans in Uruguay at a med dium term.

  5. Study of Natural Convection Passive Cooling System for Nuclear Reactors

    Science.gov (United States)

    Abdillah, Habibi; Saputra, Geby; Novitrian; Permana, Sidik

    2017-07-01

    Fukushima nuclear reactor accident occurred due to the reactor cooling pumps and followed by all emergencies cooling systems could not work. Therefore, the system which has a passive safety system that rely on natural laws such as natural convection passive cooling system. In natural convection, the cooling material can flow due to the different density of the material due to the temperature difference. To analyze such investigation, a simple apparatus was set up and explains the study of natural convection in a vertical closed-loop system. It was set up that, in the closed loop, there is a heater at the bottom which is representing heat source system from the reactor core and cooler at the top which is showing the cooling system performance in room temperature to make a temperature difference for convection process. The study aims to find some loop configurations and some natural convection performances that can produce an optimum flow of cooling process. The study was done and focused on experimental approach and simulation. The obtained results are showing and analyzing in temperature profile data and the speed of coolant flow at some point on the closed-loop system.

  6. A review of studies on community based early warning systems

    Directory of Open Access Journals (Sweden)

    Margaret Macherera

    2016-04-01

    Full Text Available Community-based early warning systems involve community driven collection and analysis of information that enable warning messages to help a community to react to a hazard and reduce the resulting loss or harm. Most early warning systems are designed at the national or global level. Local communities’ capacity to predict weather conditions using indigenous knowledge has been demonstrated in studies focusing on climate change and agriculture in some African countries. This review was motivated by successes made in non-disease specific community-based early warning systems with a view to identify opportunities for developing similar systems for malaria. This article reviewed the existing community-based early warning systems documented in literature. The types of disasters that are addressed by these systems and the methodologies utilised in the development of the systems were identified. The review showed that most of the documented community-based early warning systems focus on natural disasters such as floods, drought, and landslides. Community-based early warning systems for human diseases are very few, even though such systems exist at national and regional and global levels. There is a clear gap in terms of community-based malaria early warning systems. The methodologies for the development of the community-based early warning systems reviewed mainly derive from the four elements of early warning systems; namely risk knowledge, monitoring, warning communication and response capability. The review indicated the need for the development of community based early warning systems for human diseases. Keywords: community; early warning; disaster; hazards

  7. A new method for the determination of thermal properties of the insulation material used in district heating pipes; Ny metod foer att bestaemma fjaerrvaermeroers isoleringsfoermaaga

    Energy Technology Data Exchange (ETDEWEB)

    Adl-Zarrabi, Bijan [SP Swedish National Testing and Research Inst., Boraas (Sweden)

    2005-07-01

    Thermal resistance of district heat pipes declines during its lifetime and this leads to increased thermal losses. To be able to change the insufficient pipes in right time has a large economical impact. The conventional measurement techniques for determinations of thermal properties of insulation of the pipe are abusive and expensive. In the present project the 'Transient Plan Source' TPS-method has been studied as an alternative method. TPS-method can be used in the field and measurements are not time demanding. Thermal conductivity of district heating pipe (polyurethane foam) is measured at 20 deg C and 50 deg C with Transient Plane Source (TPS) method. Three different setups were investigated. In one of the setups the TPS sensor is embedded in the insulation of district heating pipe. Comparison between measured results and the reference value showed that the measured results by TPS method were higher than reference values. It may depend on a number of different parameters, for example TPS method measure bulk properties and the reference value is an apparent value. Relative change of thermal conductivity per Celsius degree of temperature was in the same level as reference value. It is possible to embed the TPS sensor in the insulation of the district heating pipes. The measured relative change of conductivity was in the same range as the reference value. Thus, TPS method can be used for control measurements concerning the insulation properties of district heating pipes in the field and in service.

  8. A Comparative Study of Distribution System Parameter Estimation Methods

    Energy Technology Data Exchange (ETDEWEB)

    Sun, Yannan; Williams, Tess L.; Gourisetti, Sri Nikhil Gup

    2016-07-17

    In this paper, we compare two parameter estimation methods for distribution systems: residual sensitivity analysis and state-vector augmentation with a Kalman filter. These two methods were originally proposed for transmission systems, and are still the most commonly used methods for parameter estimation. Distribution systems have much lower measurement redundancy than transmission systems. Therefore, estimating parameters is much more difficult. To increase the robustness of parameter estimation, the two methods are applied with combined measurement snapshots (measurement sets taken at different points in time), so that the redundancy for computing the parameter values is increased. The advantages and disadvantages of both methods are discussed. The results of this paper show that state-vector augmentation is a better approach for parameter estimation in distribution systems. Simulation studies are done on a modified version of IEEE 13-Node Test Feeder with varying levels of measurement noise and non-zero error in the other system model parameters.

  9. Advanced turbine systems study system scoping and feasibility study. Final report

    Energy Technology Data Exchange (ETDEWEB)

    1993-04-01

    United Technologies Research Center, Pratt & Whitney Commercial Engine Business, And Pratt & Whitney Government Engine and Space Propulsion has performed a preliminary analysis of an Advanced Turbine System (ATS) under Contract DE-AC21-92MC29247 with the Morgantown Energy Technology Center. The natural gas-fired reference system identified by the UTC team is the Humid Air Turbine (HAT) Cycle in which the gas turbine exhaust heat and heat rejected from the intercooler is used in a saturator to humidify the high pressure compressor discharge air. This results in a significant increase in flow through the turbine at no increase in compressor power. Using technology based on the PW FT4000, the industrial engine derivative of the PW4000, currently under development by PW, the system would have an output of approximately 209 MW and an efficiency of 55.3%. Through use of advanced cooling and materials technologies similar to those currently in the newest generation military aircraft engines, a growth version of this engine could attain approximately 295 MW output at an efficiency of 61.5%. There is the potential for even higher performance in the future as technology from aerospace R&D programs is adapted to aero-derivative industrial engines.

  10. System description of the Repository-Only System for the FY 1990 systems integration program studies. [CONTAINS GLOSSARY

    Energy Technology Data Exchange (ETDEWEB)

    McKee, R.W.; Young, J.R.; Konzek, G.J.

    1991-07-01

    This document provides both functional and physical descriptions of a conceptual high-level waste management system defined as a Repository-Only System. Its purpose is to provide a basis for required system computer modeling and system studies initiated in FY 1990 under the Systems Integration Program of the US Department of Energy's (DOE) Office of Civilian Radioactive Waste Management (OCRWM). The Repository-Only System is designed to accept 3000 MTU per year of spent fuel and 400 equivalent MTU per year of high-level wastes disposal in the geologic repository. This document contains both functional descriptions of the processes in the waste management system and physical descriptions of the equipment and facilities necessary for performance of those processes. These descriptions contain the level of detail needed for the projected systems analysis studies. The Repository-Only System contains all system components, from the waste storage facilities of the waste generators to the underground facilities for final disposal of the wastes. The major facilities in the system are the waste generator waste storage facilities, a repository facility that packages the wastes and than emplaces them in the geologic repository, and the transportation equipment and facilities for transporting the wastes between these major facilities. 18 refs., 39 figs.

  11. Two-stage combustion, a new concept in reducing alkali related operational problem; Tvaastegsfoerbraenning, ett nytt koncept att minska alkalirelaterad driftproblematik

    Energy Technology Data Exchange (ETDEWEB)

    Hjoernhede, Anders; Hermansson, Sven; Seemann, Martin; Alamia, Alberto; Larsson, Anton; Davidsson, Kent; Niklasson, Fredrik; Atongka Tchoffor, Placid; Jones, Frida

    2012-07-01

    A possible way to reduce alkali related problems during thermal conversion of fuels into heat and power is to thermally split the fuel into a relatively alkali-lean gas stream and a relatively alkali-rich char stream. The alkali-lean gas stream could then be combusted and used for high-temperature purpose, e.g. superheating of steam. The char residue could be combusted for heating of e.g. steam tubes at inferior temperatures. The purpose of this project has been to study and demonstrate such two-stage combustion, with separation of the early devolatilization from alkali-rich fuels for steam superheating. Within the project, it has been investigated if this type of thermal conversion is thermo-economically feasible. Furthermore, it has been investigated in laboratory and pilot scale trials, which kinds of fuels, temperature levels and fuel residence times that are required to achieve a flue gas with significantly lower concentrations of alkaloids, compared to single-stage conversion. The results from the thermo-economical simulations show that it is possible to arrange the heat exchanger surfaces in a power plant for thermal two-stage conversion. Compared to traditional one-stage combustion, the electricity efficiency could be increased from 35 % to more than 38 %. However, the results from combustion, gasification and pyrolysis in lab, together with gasification trials in the Chalmers pilot plant, show that the investigated woody fuels (bark and wood pellets) do not seem to be feasible for two-stage conversion. These fuels emit alkaloids exclusively in conjunction with the devolatilization in opposite to the desired effect. On the other hand, straw is a potential fuel candidate for two-stage conversion, since straw emits alkaloids during both devolatilization and char conversion. Furthermore, the results show that increased temperature generally causes increased alkali release. From the results it is suggested that the propensity of a fuel to release alkali during

  12. Outlet of products of biological treatment- what will be the future problems and opportunities?; Avsaettning av energiprodukter fraan biologisk behandling - vilka fraagestaellningar kommer att bli aktuella?

    Energy Technology Data Exchange (ETDEWEB)

    Hellstroem, Hanna

    2010-01-15

    to count on in the future, taxes and means of control (i.e. environmental objectives). Concrete project proposals regarding the gas composition and measurement of raw gas, as well as the minimization of emissions have been received. There are also many questions regarding the distribution of biogas. As for ethanol, the questions primarily regard the process and new substrates identified in interesting fields. Such matters and project ideas have, however, not been considered, as this report is intended to identify questions about the products. Contact with various ethanol producers and researchers has shown that there is, as it seems, no need for further development of ethanol as a product. Waste Refinery has already touched the subject of biorefinery in the WR 20 project, refinement of digestion residue. No project proposals have been identified for products from biorefinery, either by the writer's network or during the workshop. One proposal is to do a more thorough study of biorefinery under the management of Waste Refinery

  13. Possibilities for improved practice, decision support for permit applications of ash utilization in constructions; Laett att goera raett, beslutsunderlag foer miljoeproevning av askor i anlaeggningar

    Energy Technology Data Exchange (ETDEWEB)

    Toller, Susanna; Johansson, Mats; Wik, Ola; Erlandsson, Aasa; Lundberg, Kristina

    2011-02-15

    Combustion of solid biofuels, peat and different types of waste in Sweden for the purpose of energy production generates approximately 1.3 million tonnes of residues yearly. These have varying chemical and technical properties, depending on the type of fuel, the combustion process and the type of furnace. From a technical point of view, some of the ashes may be used for civil works. However, the Swedish Environmental Code requires that operators obtain a permit from the local environmental authorities if ashes are utilized for construction purposes. Previous studies on the application and permitting process have indicated that it can be improved, in particular both the information provided by the operators and the decision process. The stakeholders involved in the decision process have expressed that they have limited knowledge on expected environmental impacts from the utilization of ashes in civil works and that existing knowledge not is being fully applied in practice. The aim of this project was to improve the decision support for permit application of ash utilization in constructions. The goals were to - initiate and develop the discussion regarding which information should be used in the decision process - suggest the scope and content of the information to be supplied in the permit application - contribute to improved communication between different stakeholders - identify possibilities of using the knowledge obtained by research for decision support The stakeholders' (operators and environmental authorities) opinions and viewpoint on the assessment and application process were achieved through interviews. The results from the interviews were presented and discussed during a seminar. Both the interviews and the seminar provided information, but at the same time they served to initiate a discussion on permit application procedure and to increase the communication between different stakeholders. The outcomes from these activities (interviews and seminar

  14. Combustion tests in a solid fuel boiler to clarify the emissions when co-firing refuse; Proveldning i fastbraenslepanna foer att kartlaegga emissioner vid inblandning av olika avfallsfraktioner

    Energy Technology Data Exchange (ETDEWEB)

    Blom, Elisabet; Lundborg, Rickard; Wrangensten, Lars

    2002-04-01

    }); The highest HCI emission, before the flue gas condensing plant, was noted for the reference fuel (approx. 245 Mg/nm{sup 3}); The highest SO{sub 2} emission, in the upper furnace, was also noted for the reference fuel (over 50 mg/nm{sup 3}). Levels after the condensing plant could not be measured. 25 % meat powder injection gave the highest NO{sub x}-emission (approx. 50 mg/MJ). The high heavy metal content in ash could not bee correlated to the content in the fuel fractions. The unburnt carbon content in bottom ash is remarkably lower for 25 % meat powder injection into reference fuel. The conclusion is that the operation parameters for the oiler are optimized for this specific fuel fraction and the amount injected. Tests with a fouling probe near the first superheater showed that at a temperature of 400 deg C 10% napkin waste gave most fouling. This is interesting as the lowest HCl-emission level was noted for napkins, maybe depending on that the chlorine is present in the depositions. The project results point in the direction that co-combustion of different refuse fractions will be possible within the existing environmental legislation and maybe also within the new EU directive 2000/76/EG. Although flue gas condensation is necessary to get acceptable emissions of HCl and SO{sub 2}. Further general research is thus needed and several R and D project areas are listed in the report. Deeper studies of the combustion process in furnace are important in future project.

  15. Systems Operation Studies for Automated Guideway Transit Systems: Feeder Systems Model Functional Specification

    Science.gov (United States)

    1981-01-01

    This document specifies the functional requirements for the AGT-SOS Feeder Systems Model (FSM), the type of hardware required, and the modeling techniques employed by the FSM. The objective of the FSM is to map the zone-to-zone transit patronage dema...

  16. Integrated thermal treatment system study -- Phase 2 results. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    Feizollahi, F.; Quapp, W.J.

    1996-02-01

    This report presents the second phase of a study on thermal treatment technologies. The study consists of a systematic assessment of nineteen thermal treatment alternatives for the contact-handled mixed low-level waste (MLLW) currently stored in the US Department of Energy complex. The treatment alternatives consist of widely varying technologies for safely destroying the hazardous organic components, reducing the volume, and preparing for final disposal of the MLLW. The alternatives considered in Phase 2 were innovative thermal treatments with nine types of primary processing units. Other variations in the study examined the effect of combustion gas, air pollution control system design, and stabilization technology for the treatment residues. The Phase 1 study examined ten initial thermal treatment alternatives. The Phase 2 systems were evaluated in essentially the same manner as the Phase 1 systems. The alternatives evaluated were: rotary kiln, slagging kiln, plasma furnace, plasma gasification, molten salt oxidation, molten metal waste destruction, steam gasification, Joule-heated vitrification, thermal desorption and mediated electrochemical oxidation, and thermal desorption and supercritical water oxidation. The quantities, and physical and chemical compositions, of the input waste used in the Phase 2 systems differ from those in the Phase 1 systems, which were based on a preliminary waste input database developed at the onset of the Integrated Thermal Treatment System study. The inventory database used in the Phase 2 study incorporates the latest US Department of Energy information. All systems, both primary treatment systems and subsystem inputs, have now been evaluated using the same waste input (2,927 lb/hr). 28 refs., 88 figs., 41 tabs.

  17. Integrated thermal treatment system study -- Phase 2 results. Revision 1

    International Nuclear Information System (INIS)

    Feizollahi, F.; Quapp, W.J.

    1996-02-01

    This report presents the second phase of a study on thermal treatment technologies. The study consists of a systematic assessment of nineteen thermal treatment alternatives for the contact-handled mixed low-level waste (MLLW) currently stored in the US Department of Energy complex. The treatment alternatives consist of widely varying technologies for safely destroying the hazardous organic components, reducing the volume, and preparing for final disposal of the MLLW. The alternatives considered in Phase 2 were innovative thermal treatments with nine types of primary processing units. Other variations in the study examined the effect of combustion gas, air pollution control system design, and stabilization technology for the treatment residues. The Phase 1 study examined ten initial thermal treatment alternatives. The Phase 2 systems were evaluated in essentially the same manner as the Phase 1 systems. The alternatives evaluated were: rotary kiln, slagging kiln, plasma furnace, plasma gasification, molten salt oxidation, molten metal waste destruction, steam gasification, Joule-heated vitrification, thermal desorption and mediated electrochemical oxidation, and thermal desorption and supercritical water oxidation. The quantities, and physical and chemical compositions, of the input waste used in the Phase 2 systems differ from those in the Phase 1 systems, which were based on a preliminary waste input database developed at the onset of the Integrated Thermal Treatment System study. The inventory database used in the Phase 2 study incorporates the latest US Department of Energy information. All systems, both primary treatment systems and subsystem inputs, have now been evaluated using the same waste input (2,927 lb/hr). 28 refs., 88 figs., 41 tabs

  18. Study and development of a generalised input-output system for data base management systems

    International Nuclear Information System (INIS)

    Zidi, Noureddine

    1975-01-01

    This thesis reports a study which aimed at designing and developing a software for the management and execution of all input-output actions of data base management systems. This software is also an interface between data base management systems and the various operating systems. After a recall of general characteristics of database management systems, the author presents the previously developed GRISBI system (rational management of information stored in an integrated database), and describes difficulties faced to adapt this system to the new access method (VSAM, virtual sequential access method). This lead to the search for a more general solution, the development of which is presented in the second part of this thesis: environment of the input-output generalised system, architecture, internal specifications. The last part presents flowcharts and statements of the various routines [fr

  19. Integrated thermal treatment system study. Phase 2. Addendum system A8

    International Nuclear Information System (INIS)

    Biagi, C.; Teheranian, B.; Quapp, W.J.; Schwinkendorf, W.E.

    1996-05-01

    This is an addendum to the Integrated Treatment System Study - Phase 2 Results report. This addendum describes the technology and the operation of System A-8, Rotary Kiln, Air Combustion Gas, Dry-Wet APC, and Grout Stabilization. A process flow diagram, functional allocation diagrams, and plan views and perspective views for this system are attached. Detailed cost information for this subsystem is reported in Appendix A of this addendum

  20. Aircraft Alerting Systems Criteria Study. Volume 1. Collation and Analysis of Aircraft Alerting Systems Data

    Science.gov (United States)

    1977-05-01

    22161. C-) Prepared for U.S. DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION Systems Research & Development Service SWashington, D.C. 20590...of information exchange. The United StateR Government assumes no liability for its contents or use thereof. 𔃻 *port No. 2 Government Accesilon No. 3...study was ini. tiated to estublish an alerting philosophy for aircraft cockpit alerting systems. The contract sponsor was FAA Systems Research and

  1. Study on the System Design of a Solar Assisted Ground Heat Pump System Using Dynamic Simulation

    Directory of Open Access Journals (Sweden)

    Min Gyung Yu

    2016-04-01

    Full Text Available Recently, the use of hybrid systems using multiple heat sources in buildings to ensure a stable energy supply and improve the system performance has gained attention. Among them, a heat pump system using both solar and ground heat was developed and various system configurations have been introduced. However, establishing a suitable design method for the solar-assisted ground heat pump (SAGHP system including a thermal storage tank is complicated and there are few quantitative studies on the detailed system configurations. Therefore, this study developed three SAGHP system design methods considering the design factors focused on the thermal storage tank. Using dynamic energy simulation code (TRNSYS 17, individual performance analysis models were developed and long-term quantitative analysis was carried out to suggest optimum design and operation methods. As a result, it was found that SYSTEM 2 which is a hybrid system with heat storage tank for only a solar system showed the highest average heat source temperature of 14.81 °C, which is about 11 °C higher than minimum temperature in SYSTEM 3. Furthermore, the best coefficient of performance (COP values of heat pump and system were 5.23 and 4.32 in SYSYEM 2, using high and stable solar heat from a thermal storage tank. Moreover, this paper considered five different geographical and climatic locations and the SAGHP system worked efficiently in having high solar radiation and cool climate zones and the system COP was 4.51 in the case of Winnipeg (Canada where the highest heating demand is required.

  2. Studying integrated health care systems with a structurationist approach

    Science.gov (United States)

    Demers, Louis; Arseneault, Stéphane; Couturier, Yves

    2010-01-01

    Introduction To implement an integrated health care system is not an easy task and to ensure its sustainability is yet more difficult. Aim Discuss how a structurationist approach can shed light on the stakes of these processes and guide the managers of such endeavours. Theory and method Structuration theory [1] has been used by numerous authors to cast new light on complex organizational phenomena. One of the central tenets of this theory is that social systems, such as integrated health care systems, are recurrent social practices across time-space and are characterized by structural properties which simultaneously constrain and enable the constitutive social actors who reproduce and transform the system through their practices. We will illustrate our theoretical standpoint with empirical material gathered during the study of an integrated health care system for the frail elderly in Quebec, Canada. This system has been implemented in 1997 and is still working well in 2010. Results and conclusion To implement an integrated health care system that is both effective and sustainable, its managers must shrewdly allow for the existing system and progressively introduce changes in the way managers and practitioners at work in the system view their role and act on a daily basis.

  3. Electrical system studies for the grid connection of wind farms

    International Nuclear Information System (INIS)

    Arp, K.; Hanson, J.; Hopp, S.; Zimmermann, W.

    2007-01-01

    Wind power is gaining momentum in the world's energy balance. Several issues have to be addressed whenever power-generating devices are connected to the grid. The paper describes studies needed to evaluate the influence of wind farms on the connected transmission system and how faults in the system impact on induction generators in a wind farm. Some generalized results of studies for an offshore wind farm in the North Sea and a Bulgarian wind farm show how studies can influence the layout of the internal network and the electrical equipment. (authors)

  4. Organoid culture systems to study host-pathogen interactions

    NARCIS (Netherlands)

    Dutta, Devanjali; Clevers, Hans

    2017-01-01

    Recent advances in host-microbe interaction studies in organoid cultures have shown great promise and have laid the foundation for much more refined future studies using these systems. Modeling of Zika virus (ZIKV) infection in cerebral organoids have helped us understand its association with

  5. An Experimental Study of the Emergence of Human Communication Systems

    Science.gov (United States)

    Galantucci, Bruno

    2005-01-01

    The emergence of human communication systems is typically investigated via 2 approaches with complementary strengths and weaknesses: naturalistic studies and computer simulations. This study was conducted with a method that combines these approaches. Pairs of participants played video games requiring communication. Members of a pair were…

  6. nStudy: A System for Researching Information Problem Solving

    Science.gov (United States)

    Winne, Philip H.; Nesbit, John C.; Popowich, Fred

    2017-01-01

    A bottleneck in gathering big data about learning is instrumentation designed to record data about processes students use to learn and information on which those processes operate. The software system nStudy fills this gap. nStudy is an extension to the Chrome web browser plus a server side database for logged trace data plus peripheral modules…

  7. An Overview of Clinical Studies on Fiber Post Systems

    Directory of Open Access Journals (Sweden)

    Idil Dikbas

    2013-01-01

    Full Text Available Intraradicular posts are useful adjuncts in the restoration of endodontically treated teeth. These systems have undergone a significant evolution in recent years, and fiber-reinforced systems have started to be incorporated into routine clinical care more frequently. Despite the high number of laboratory studies pertaining to the characteristics of fiber posts, clinical studies evaluating their general success rates are rather limited. Since clinical investigations are reliable means to achieve information about the general behavior pattern of materials or techniques, assessment of this data will be beneficial to have a better understanding of fiber-reinforced intraradicular post systems. The purpose of this paper was to make a summary of clinical studies regarding various fiber posts. A PubMed search was conducted and articles dating back to 1990 were retrieved. The paper provides an overview of clinical studies on fiber posts specifically in the last decade as well as commentary analysis.

  8. Study of Intelligent Secure Chemical Inventory Management System

    Science.gov (United States)

    Shukran, Mohd Afizi Mohd; Naim Abdullah, Muhammad; Nazri Ismail, Mohd; Maskat, Kamaruzaman; Isa, Mohd Rizal Mohd; Shahfee Ishak, Muhammad; Adib Khairuddin, Muhamad

    2017-08-01

    Chemical inventory management system has been experiencing a new revolution from traditional inventory system which is manual to an automated inventory management system. In this paper, some review of the classic and modern approaches to chemical inventory management system has been discussed. This paper also describe about both type of inventory management. After a comparative analysis of the traditional method and automated method, it can be said that both methods have some distinctive characteristics. Moreover, the automated inventory management method has higher accuracy of calculation because the calculations are handled by software, eliminating possible errors and saving time. The automated inventory system also allows users and administrators to track the availability, location and consumption of chemicals. The study of this paper can provide forceful review analysis support for the chemical inventory management related research.

  9. Study of an active wall solar heating system

    International Nuclear Information System (INIS)

    Kassem, Talal

    2006-01-01

    An active wall solar heating system was built and tested. In the same time a compatible computer program has been according to set the recommended dimensions for the solar collectors where (F-Chart) method used to set the ratio of monthly solar sharing average for the examined heating system. Some parameters, such as collectors' areas, its tilt angle and near earth reflecting were experimentally investigated, affecting the executed active solar heating system performance. The study explain the ability of using this system which is simple, Low coast and high performance in heating residential and public buildings and heating water with ratio of yearly solar sharing achieves the needed saving of using this system.(Author)

  10. Versatile P(acman) BAC Libraries for Transgenesis Studies in Drosophila melanogaster

    Energy Technology Data Exchange (ETDEWEB)

    Venken, Koen J.T.; Carlson, Joseph W.; Schulze, Karen L.; Pan, Hongling; He, Yuchun; Spokony, Rebecca; Wan, Kenneth H.; Koriabine, Maxim; de Jong, Pieter J.; White, Kevin P.; Bellen, Hugo J.; Hoskins, Roger A.

    2009-04-21

    We constructed Drosophila melanogaster BAC libraries with 21-kb and 83-kb inserts in the P(acman) system. Clones representing 12-fold coverage and encompassing more than 95percent of annotated genes were mapped onto the reference genome. These clones can be integrated into predetermined attP sites in the genome using Phi C31 integrase to rescue mutations. They can be modified through recombineering, for example to incorporate protein tags and assess expression patterns.

  11. Field Artillery Ammunition Processing System (FAAPS) concept evaluation study

    Energy Technology Data Exchange (ETDEWEB)

    Kring, C.T.; Babcock, S.M.; Watkin, D.C.; Oliver, R.P.

    1992-06-01

    The Field Artillery Ammunition Processing System (FAAPS) is an initiative to introduce a palletized load system (PLS) that is transportable with an automated ammunition processing and storage system for use on the battlefield. System proponents have targeted a 20% increase in the ammunition processing rate over the current operation while simultaneously reducing the total number of assigned field artillery battalion personnel by 30. The overall objective of the FAAPS Project is the development and demonstration of an improved process to accomplish these goals. The initial phase of the FAAPS Project and the subject of this study is the FAAPS concept evaluation. The concept evaluation consists of (1) identifying assumptions and requirements, (2) documenting the process flow, (3) identifying and evaluating technologies available to accomplish the necessary ammunition processing and storage operations, and (4) presenting alternative concepts with associated costs, processing rates, and manpower requirements for accomplishing the operation. This study provides insight into the achievability of the desired objectives.

  12. Study of Development for RFID System to Hospital Environment.

    Science.gov (United States)

    Hong, Seung Kwon; Sung, Myung-Whun

    2015-01-01

    RFID/USN develops information systems for anytime, anywhere to anybody access Electronic Medical Records (EMR). The goal of the present study is to develop a RFID/USN-based information system for the hospital environment. First, unable to recognize, second, able to recognize as a pursuit of place and suppose the time of medical examination. A retrospective analysis of 235 RFID monitoring results, from four ENT ambulatory clinics of Seoul National University Hospital were extracted by a reader program and monitoring of RFID tag (2006.11.16~2006.12.16). RFID detection for sensing reader of this study has been put into representing "place" and "spending time" of patients for medical history taking and examination. Through the RFID of detection for specific place and spending time of medical examination, RFID/USN develops information system progressing in the EMR of hospital system.

  13. How Choice Changes the Education System: A Michigan Case Study

    Science.gov (United States)

    Plank, David; Sykes, Gary

    1999-11-01

    In countries around the world policy makers propose that parents should exercise more control over the choice of schools that their children attend. This paper considers the ways in which the introduction of new opportunities for school choice changes the education system. It argues that choice affects the education system as a whole by introducing new actors into the system, by changing the terms of relationships among existing actors, and by creating new pressures within the system that require new responses. The nature, magnitude, and consequences of these effects cannot be predicted in advance, as they depend on a number of factors including the social and economic context. The empirical basis for this paper derives from a case study of the implementation of choice policies in the state of Michigan in the US, but the conceptual issues raised have important implications for the study of school choice wherever such policies are adopted.

  14. Confocal optical system: a novel noninvasive sensor to study mixing.

    Science.gov (United States)

    Vallejos, Jose R; Kostov, Yordan; Marten, Mark R; Rao, Govind

    2005-01-01

    A novel confocal optical system to study mixing time in small-scale bioreactors is presented. The system is designed to monitor fluorescence upon tracer addition from a localized confocal volume of 0.21 mL within a glass vessel. The key elements of the fluorescence-based confocal system are a pinhole, a lens, an APD (Avalanche photodiode) detector, and light filters. The optical technique was validated by comparison with a pH-based technique. Finally, the optical sensor was tested and a real cultivation media (i.e., spent mammalian cell media) was used to measure mixing time in a 12.5-mL stirred transparent vessel. High accuracy, easy results interpretation, and low costs are the three most attractive characteristics of the sensor. Because of its noninvasive nature and versatility, the results suggest that the confocal system is a promising tool to perform mixing time studies in stirred vessels.

  15. A review of studies on community based early warning systems

    OpenAIRE

    Margaret Macherera; Moses J. Chimbari

    2016-01-01

    Community-based early warning systems involve community driven collection and analysis of information that enable warning messages to help a community to react to a hazard and reduce the resulting loss or harm. Most early warning systems are designed at the national or global level. Local communities’ capacity to predict weather conditions using indigenous knowledge has been demonstrated in studies focusing on climate change and agriculture in some African countries. This review was motivated...

  16. Identification of material flow systems: Extensions and case study.

    Science.gov (United States)

    Gleiss, A; Matyus, T; Bauer, G; Deistler, M; Glenck, E; Lampert, C

    1998-01-01

    The paper consists of two main parts. The first part is concerned with different aspects of mathematical modeling of material flow systems for the linear static case. The problems considered are the description of the model class, data reconciliation, identification of subsystems and the analysis of system properties relevant e.g. for simulation. In the second part an application of the modeling tools proposed in the first part to a study on the metabolism of phosphorus in an Austrian region is given.

  17. Feasibility study for the European Reliability Data System (ERDS)

    International Nuclear Information System (INIS)

    Mancini, G.

    1980-01-01

    In the framework of the Reactor Safety Programme of the Commission of the European Communities, the JRC - Ispra Establishment has performed a feasibility study for an integrated European Reliability Data System, the aim of which is the collection and organization of information related to the operation of LWRs with regard to component and systems behaviour, abnormal occurrences, outages, etc. Component Event Data Bank (CEGB), Abnormal Occurrences Reporting System, Generic Reliability Parameter Data Bank, Operating Unit Status Reports and the main activities carried out during the last two years are described. The most important achievements are briefly reported, such as: Reference Classification for Systems, Components and Failure Events, Informatic Structure of the Pilot Experiment of the CEDB, Information Retrieval System for Abnormal Occurrences Reports, Data Bank on Component Reliability Parameters, System on the Exchange of Operation Experience of LWRs, Statistical Data Treatment. Finally, the general conclusions of the feasibility study are summarized: the possibility and the usefulness for the creation of an integrated European Reliability Data System are outlined. (author)

  18. Study of advanced fuel system concepts for commercial aircraft

    Science.gov (United States)

    Coffinberry, G. A.

    1985-01-01

    An analytical study was performed in order to assess relative performance and economic factors involved with alternative advanced fuel systems for future commercial aircraft operating with broadened property fuels. The DC-10-30 wide-body tri-jet aircraft and the CF6-8OX engine were used as a baseline design for the study. Three advanced systems were considered and were specifically aimed at addressing freezing point, thermal stability and lubricity fuel properties. Actual DC-10-30 routes and flight profiles were simulated by computer modeling and resulted in prediction of aircraft and engine fuel system temperatures during a nominal flight and during statistical one-day-per-year cold and hot flights. Emergency conditions were also evaluated. Fuel consumption and weight and power extraction results were obtained. An economic analysis was performed for new aircraft and systems. Advanced system means for fuel tank heating included fuel recirculation loops using engine lube heat and generator heat. Environmental control system bleed air heat was used for tank heating in a water recirculation loop. The results showed that fundamentally all of the three advanced systems are feasible but vary in their degree of compatibility with broadened-property fuel.

  19. Conceptual study of superconducting urban area power systems

    International Nuclear Information System (INIS)

    Noe, Mathias; Gold-acker, Wilfried; Bach, Robert; Prusseit, Werner; Willen, Dag; Poelchau, Juri; Linke, Christian

    2010-01-01

    Efficient transmission, distribution and usage of electricity are fundamental requirements for providing citizens, societies and economies with essential energy resources. It will be a major future challenge to integrate more sustainable generation resources, to meet growing electricity demand and to renew electricity networks. Research and development on superconducting equipment and components have an important role to play in addressing these challenges. Up to now, most studies on superconducting applications in power systems have been concentrated on the application of specific devices like for example cables and current limiters. In contrast to this, the main focus of our study is to show the consequence of a large scale integration of superconducting power equipment in distribution level urban power systems. Specific objectives are to summarize the state-of-the-art of superconducting power equipment including cooling systems and to compare the superconducting power system with respect to energy and economic efficiency with conventional solutions. Several scenarios were considered starting from the replacement of an existing distribution level sub-grid up to a full superconducting urban area distribution level power system. One major result is that a full superconducting urban area distribution level power system could be cost competitive with existing solutions in the future. In addition to that, superconducting power systems offer higher energy efficiency as well as a number of technical advantages like lower voltage drops and improved stability.

  20. Study of the effects of radon in three biological systems

    International Nuclear Information System (INIS)

    Tavera, L.; Balcazar, M.; Lopez, A.; Brena, M.; Rosa, M.E. De la; Villalobos P, R.

    2002-01-01

    The radon and its decay products are responsible of the 3/4 parts of the exposure of the persons to the environmental radiation. The discovery at the end of XIX Century of the illnesses, mainly of cancer, which appeared in the presence of radon, lead to an accelerated growing of the radon studies: monitoring, dosimetry, effects on the persons, etc. Several epidemiological studies of radon in miners and population in general have been realized; advancing in the knowledge about the concentration-lung cancer risk relationship, but with discrepancies in the results depending on the concentration levels. Therefor, studies which consuming time, efforts and money go on doing. The research of the radon effects in biological systems different to human, allows to realize studies in less time, in controlled conditions and generally at lower cost, generating information about the alpha radiation effects in the cellular field. Therefor it was decided to study the response of three biological systems exposed to radon: an unicellular bacteria Escherichia Coli which was exposed directly to alpha particles from an electrodeposited source for determining the sensitivity limit of the chose technique. A plant, Tradescantia, for studying the cytogenetic effect of the system exposed to controlled concentrations of radon. An insect, Drosophila Melanogaster, for studying the genetic effects and the accumulated effects in several generations exposed to radon. In this work the experimental settlements are presented for the expositions of the systems and the biological results commenting the importance of these. (Author)

  1. Study of Physical Protection System at PUSPATI TRIGA Reactor (RTP)

    International Nuclear Information System (INIS)

    Ligam, A.S.; Ina, I.; Zarina Masood

    2016-01-01

    Physical protection program at PUSPATI TRIGA Reactor (RTP) which is located at Nuklear Malaysia, Bangi Complex has been strengthened and upgraded from time to time to accommodate current situation needs. However, there is always room for improvement. Hence, study have been made to look deeper into physical protection components such as delay systems, external sensors, PPS intruder alarm sensors, use of video system, personnel security or insider threats, access control operation system operation rules and security culture that may need to take into consideration. (author)

  2. Parametric studies of electric propulsion systems for orbit transfer vehicles

    Science.gov (United States)

    Manvi, R.; Fujita, T.

    1988-01-01

    The present parametric tradeoff study for OTV electric propulsion systems encompasses ammonia and hydrogen arcjets as well as Xe-ion propulsion systems with performance characteristics currently being projected for 1993 operation. In all cases, the power source is a nuclear-electric system with 30 kg/kW(e) specific mass, and the mission involves the movement of payloads from lower orbits to GEO. Attention is given to payload capabilities and associated propellant requirements. Mission trip time is identified as the key parameter for selection; while arcjets are preferable for shorter trip times, ion propulsion is more advantageous for longer trip times due to reduced propellant mass fraction.

  3. Study on Design of Control Module and Fuzzy Control System

    International Nuclear Information System (INIS)

    Lee, Chang Kyu; Sohn, Chang Ho; Kim, Jung Seon; Kim, Min Kyu

    2005-01-01

    Performance of control unit is improved by introduction of fuzzy control theory and compensation for input of control unit as FLC(Fuzzy Logic Controller). Here, FLC drives thermal control system by linguistic rule-base. Hence, In case of using compensative PID control unit, it doesn't need to revise or compensate for PID control unit. Consequently, this study shows proof that control system which implements H/W module and then uses fuzzy algorism in this system is stable and has reliable performance

  4. Advances in study of molecular imaging reporte gene systems

    International Nuclear Information System (INIS)

    Wu Tao; An Rui

    2010-01-01

    The use of molecular imaging reporter gene systems has allowed gene therapy to move from the laboratory to the clinical application, which provides methodology to monitor the expression of therapeutic gene noninvasively and achieve quantitative outcome in vivo. Recently, the radionuclide reporter gene still is the focus many studies, but MRI and optical reporter gene have gradually played a important part in reporter gene systems. On the basis of combination of multi-subject, for example applied chemistry and molecular biology, more and more new modified reporter genes and molecular probes have spread out. This paper mainly introduces the advantages and disadvantages of reporter gene system and development trends. (authors)

  5. Laser fusion systems design study. Final technical report

    International Nuclear Information System (INIS)

    1975-06-01

    This study investigated: (1) the formulation and evaluation of an alignment system to accomplish pointing, focusing, centering and translation for the 20-arm SHIVA laser, (2) the formulation and evaluation of concepts for the correction of static phase distortions introduced by the accumulated optical elements in the laser chains, (3) the formulation and evaluation of concepts for the correction of optical path length differences between the arms of the SHIVA system, and (4) the conceptual design of appropriate control system hardware. (U.S.)

  6. Tracking studies of the Compact Linear Collider collimation system

    Directory of Open Access Journals (Sweden)

    I. Agapov

    2009-08-01

    Full Text Available A collimation system performance study includes several types of computations performed by different codes. Optics calculations are performed with codes such as MADX, tracking studies including additional effects such as wakefields, halo and tail generation, and dynamical machine alignment are done with codes such as PLACET, and energy deposition can be studied with BDSIM. More detailed studies of hadron production in the beam halo interaction with collimators are better performed with Geant4 and FLUKA. A procedure has been developed that allows one to perform a single tracking study using several codes simultaneously. In this paper we study the performance of the Compact Linear Collider collimation system using such a procedure.

  7. Project on Alternative Systems Study - PASS. Final report

    International Nuclear Information System (INIS)

    1992-10-01

    Alternative repository systems for deep disposal of spent fuel and different types of canisters are studied regarding technical aspects in Project on Alternative System Study (PASS). The objective is to present a ranking of repository systems as well as of canister types for each system. The studies and compared systems are: KBS-3, Medium Long Tunnels (MLH), Long tunnels (VLH) and Deep Boreholes (VDH). For KBS-3 and MLH five canister types are compared (copper/steel, copper/lead, copper (HIP), steel/lead and steel), for VLH two types (copper/steel and steel), and for VDH three types (titanium/concrete with non-consolidated fuel assemblies, titanium/concrete with consolidated assemblies and copper (HIP) with non-consolidated assemblies). The comparison is separated into three sub-comparisons (Technology, Long-term performance and safety, and Costs), which eventually are merged into one ranking. With respect to canister alternatives the result is that the copper/steel canister is ranked first for KBS-3, MLH and VLH, while the titanium/concrete canister is ranked first for VDH (non-consolidated as well as consolidated assemblies. With these canister alternatives the merged ranking of repository systems results in placing KBS-3 slightly in front of MLH. VLH comes thereafter and VDH last. (32 refs.)

  8. Inertial confinement fusion reaction chamber and power conversion system study

    International Nuclear Information System (INIS)

    Maya, I.; Schultz, K.R.; Battaglia, J.M.

    1984-09-01

    GA Technologies has developed a conceptual ICF reactor system based on the Cascade rotating-bed reaction chamber concept. Unique features of the system design include the use of low activation SiC in a reaction chamber constructed of box-shaped tiles held together in compression by prestressing tendons to the vacuum chamber. Circulating Li 2 O granules serve as the tritium breeding and energy transport material, cascading down the sides of the reaction chamber to the power conversion system. The total tritium inventory of the system is 6 kg; tritium recovery is accomplished directly from the granules via the vacuum system. A system for centrifugal throw transport of the hot Li 2 O granules from the reaction chamber to the power conversion system has been developed. A number of issues were evaluated during the course of this study. These include the response of first-layer granules to the intense microexplosion surface heat flux, cost effective fabrication of Li 2 O granules, tritium inventory and recovery issues, the thermodynamics of solids-flow options, vacuum versus helium-medium heat transfer, and the tradeoffs of capital cost versus efficiency for alternate heat exchange and power conversion system option. The resultant design options appear to be economically competitive, safe, and environmentally attractive

  9. Study of Systemic Risk Involved in Mutual Funds

    Science.gov (United States)

    Dash, Kishore C.; Dash, Monika

    Systemic risk, may be defined as the risk that contaminates to the whole system, consisting of many interacting agents that fail one after another. These agents, in an economic context, could be firms, banks, funds, or other financial institutions. Systemic risk is a macroscopic property of a system which emerges due to the nonlinear interaction of agents on a microscopic level. A stock market itself is a system in which there are many sub-systems, like Dowjones, Nifty, Sensex, Nasdaq, Nikkei and other market indices in global perspective. In Indian market, subsystems may be like Sensex, Nifty, BSE200, Bankex, smallcap index, midcap index, S&P CNX 500 and many others. Similarly there are many mutual funds, which have their own portfolio of different stocks, bonds etc. We have attempted to study the systemic risk involved in a fund as a macroscopic object with regard to its microscopic components as different stocks in its portfolio. It is observed that fund managers do manage to reduce the systemic risk just like we take precautions to control the spread of an epidemic.

  10. Numerical simulation system for environmental studies: SPEEDI-MP

    International Nuclear Information System (INIS)

    Nagai, Haruyasu; Chino, Masamichi; Terada, Hiroaki; Harayama, Takaya; Kobayashi, Takuya; Tsuduki, Katsunori; Kim, Keyong-Ok; Furuno, Akiko

    2006-09-01

    A numerical simulation system SPEEDI-MP has been developed to apply for various environmental studies. SPEEDI-MP consists of dynamical models and material transport models for the atmospheric, terrestrial, and oceanic environments, meteorological and geographical database for model inputs, and system utilities for file management, visualization, analysis, etc., using graphical user interfaces (GUIs). As a numerical simulation tool, a model coupling program (model coupler) has been developed. It controls parallel calculations of several models and data exchanges among them to realize the dynamical coupling of the models. A coupled model system for water circulation has been constructed with atmosphere, ocean, wave, hydrology, and land-surface models using the model coupler. System utility GUIs are based on the Web technology, allowing users to manipulate all the functions on the system using their own PCs via the internet. In this system, the source estimation function in the atmospheric transport model can be executed on the grid computer system. Performance tests of the coupled model system for water circulation were also carried out for the flood event at Saudi Arabia in January 2005 and the storm surge case by the hurricane KATRINA in August 2005. (author)

  11. Mixed reality ultrasound guidance system: a case study in system development and a cautionary tale.

    Science.gov (United States)

    Ameri, Golafsoun; Baxter, John S H; Bainbridge, Daniel; Peters, Terry M; Chen, Elvis C S

    2018-04-01

    Real-time ultrasound has become a crucial aspect of several image-guided interventions. One of the main constraints of such an approach is the difficulty in interpretability of the limited field of view of the image, a problem that has recently been addressed using mixed reality, such as augmented reality and augmented virtuality. The growing popularity and maturity of mixed reality has led to a series of informal guidelines to direct development of new systems and to facilitate regulatory approval. However, the goals of mixed reality image guidance systems and the guidelines for their development have not been thoroughly discussed. The purpose of this paper is to identify and critically examine development guidelines in the context of a mixed reality ultrasound guidance system through a case study. A mixed reality ultrasound guidance system tailored to central line insertions was developed in close collaboration with an expert user. This system outperformed ultrasound-only guidance in a novice user study and has obtained clearance for clinical use in humans. A phantom study with 25 experienced physicians was carried out to compare the performance of the mixed reality ultrasound system against conventional ultrasound-only guidance. Despite the previous promising results, there was no statistically significant difference between the two systems. Guidelines for developing mixed reality image guidance systems cannot be applied indiscriminately. Each design decision, no matter how well justified, should be the subject of scientific and technical investigation. Iterative and small-scale evaluation can readily unearth issues and previously unknown or implicit system requirements. We recommend a wary eye in development of mixed reality ultrasound image guidance systems emphasizing small-scale iterative evaluation alongside system development. Ultimately, we recommend that the image-guided intervention community furthers and deepens this discussion into best practices in

  12. Case study field evaluation of a systems approach to retrofitting a residential HVAC system

    Energy Technology Data Exchange (ETDEWEB)

    Walker, Iain S.; McWiliams, Jennifer A.; Konopacki, Steven J.

    2003-09-01

    This case study focusing on a residence in northern California was undertaken as a demonstration of the potential of a systems approach to HVAC retrofits. The systems approach means that other retrofits that can affect the HVAC system are also considered. For example, added building envelope insulation reduces building loads so that smaller capacity HVAC system can be used. Secondly, we wanted to examine the practical issues and interactions with contractors and code officials required to accomplish the systems approach because it represents a departure from current practice. We identified problems in the processes of communication and installation of the retrofit that led to compromises in the final energy efficiency of the HVAC system. These issues must be overcome in order for HVAC retrofits to deliver the increased performance that they promise. The experience gained in this case study was used to optimize best practices guidelines for contractors (Walker 2003) that include building diagnostics and checklists as tools to assist in ensuring the energy efficiency of ''house as a system'' HVAC retrofits. The best practices guidelines proved to be an excellent tool for evaluating the eight existing homes in this study, and we received positive feedback from many potential users who reviewed and used them. In addition, we were able to substantially improve the energy efficiency of the retrofitted case study house by adding envelope insulation, a more efficient furnace and air conditioner, an economizer and by reducing duct leakage.

  13. Space station/base food system study. Volume 1: Systems design handbook

    Science.gov (United States)

    1970-01-01

    A description is given of the approach used in a study to identify and define engineering data for a spectrum of possible items and equipment comprising potential food systems. In addition, the material presented includes: (1) the study results containing the candidate concepts considered and technical data, performance characteristics, and sketches for each of the concepts by functional area; (2) human factors considerations for crew tasks; (3) shuttle supply interface requirements; (4) special food system study areas; and (5) recommendations and conclusions based on the study results.

  14. Rethinking Study and Management of Agricultural Systems for Policy Design

    Directory of Open Access Journals (Sweden)

    Johann Baumgärtner

    2013-09-01

    Full Text Available There is a concern that agriculture will no longer be able to meet, on a global scale, the growing demand for food. Facing such a challenge requires new patterns of thinking in the context of complexity and sustainability sciences. This paper, focused on the social dimension of the study and management of agricultural systems, suggests that rethinking the study of agricultural systems entails analyzing them as complex socio-ecological systems, as well as considering the differing thinking patterns of diverse stakeholders. The intersubjective nature of knowledge, as studied by different philosophical schools, needs to be better integrated into the study and management of agricultural systems than it is done so far, forcing us to accept that there are no simplistic solutions, and to seek a better understanding of the social dimension of agriculture. Different agriculture related problems require different policy and institutional approaches. Finally, the intersubjective nature of knowledge asks for the visualization of different framings and the power relations taking place in the decision-making process. Rethinking management of agricultural systems implies that policy making should be shaped by different principles: learning, flexibility, adaptation, scale-matching, participation, diversity enhancement and precaution hold the promise to significantly improve current standard management procedures.

  15. The Keith Edward scoring system: A case control study

    Directory of Open Access Journals (Sweden)

    Sarkar Supriya

    2009-01-01

    Full Text Available Objective: The World health organization (WHO has accepted Keith Edward scoring system for the diagnosis of childhood tuberculosis (TB. In the present study, we evaluated this scoring system. Methods and Results: We included 53 children with confirmed TB involving different organs, admitted in NB Medical College, during two years period as cases; and 50 randomly selected, age, sex, and organ matched confirmed non-TB cases as controls. We noticed 15.1% false negative and 22% false positive results in our study, and the scoring system had 84.9% sensitivity, 78% specificity, and 80.36% positive predictive value. Likelihood ratio positive (LR+ was 3.86, likelihood ratio negative (LR- was 0.19, and overall agreement was 81.55%. We observed that Keith Edward scoring system was less effective in children suffering from non-TB chronic diseases (false positive rate: 45.5%. We found no significant difference in nutritional status between study and control groups (P = 0.65. We noticed that more than 15-mm indurations for tuberculin test were specific for TB in children. Conclusion: We concluded that Keith Edward scoring system is good for public health purpose, but there is a scope for improvement, and further study is required for this purpose.

  16. Spirituality, Religiosity, and Weight Management among African American Adolescent Males: The Jackson Heart KIDS Pilot Study

    OpenAIRE

    Bruce, Marino A.; Beech, Bettina M.; Griffith, Derek M.; Thorpe, Roland J.

    2016-01-01

    Spirituality and religion have been identified as important determinants of health for adults; however, the impact of faith-oriented factors on health behaviors and outcomes among African American adolescent males has not been well studied. The purpose of this study is to examine the relationship between religiosity and spirituality and obesity-related behaviors among 12–19 year old African American males (N=105) in the Jackson Heart Kids Pilot Study. Key variables of interest are church atte...

  17. A study of charmonium systems across the deconfinement transition

    Energy Technology Data Exchange (ETDEWEB)

    Datta, Saumen; Karsch, Frithjof; Petreczky, Peter; Wetzorke, Ines

    2003-05-01

    We present results from lattice studies of charmonium systems near the deconfinement transition temperature. On quenched isotropic. lattices with lattice spacings between 0.02 and 0.05 fm, q-barq systems with quark masses close to the charm mass and with different spin-parity quantum numbers are studied in the temperature range 0.9T{sub c} - 3T{sub c}. Results for temporal correlators of local operators, and the spectral functions constructed from them, are discussed. For the pseudoscalar and vector channels, the correlators are observed to change very little across the deconfinement transition, unlike in the case of the light quarks.

  18. A simple mechanical system for studying adaptive oscillatory neural networks

    DEFF Research Database (Denmark)

    Jouffroy, Guillaume; Jouffroy, Jerome

    model, etc.) might be too complex to study. In this paper, we use a comparatively simple mechanical system, the nonholonomic vehicle referred to as the Roller-Racer, as a means towards testing different learning strategies for an Recurrent Neural Network-based (RNN) controller/guidance system. After...... a brief description of the Roller-Racer, we present as a preliminary study an RNN-based feed-forward controller whose parameters are obtained through the well-known teacher forcing learning algorithm, extended to learn signals with a continuous component....

  19. Preliminary study of TEC application in cooling system

    Science.gov (United States)

    Sulaiman, A. C.; Amin, N. A. M.; Saidon, M. S.; Majid, M. S. A.; Rahman, M. T. A.; Kazim, M. N. F. M.

    2017-10-01

    Integration of thermoelectric cooling (TEC) within a space cooling system in the lecturer room is studied. The studied area (air conditioned surrounding) is encapsulated with wall, floor, roof, and glass window. TEC module is placed on the glass window. The prototype of the studied compartment is designed using cabin container. The type and number of TEC module are studied and the effects on the cooling performance are analyzed as it is assumed to be tested within an air conditioned lecturer room. The experimental and mathematical modeling of the cooling system developed. It is expected that the mathematical modeling derived from this study will be used to estimate the use of the number of TEC module to be integrated with air conditioner unit where possible.

  20. Evaluation of hybrid power system alternatives: a case study

    International Nuclear Information System (INIS)

    Rosenthal, Andrew L.

    1999-01-01

    Pursuant to executive and statutory policies, the National Park Service (NPS) has been evaluating the use of photovoltaic (PV) hybrid power systems, for many of its remote, off-grid areas. This paper reports the results of a detailed technical and economic evaluation for one such area: the Needles District of Canyonlands National Park. The study evaluates the presented power systems and five alternative power generation configurations, four of which utilise PV. Projections are provided for the generator run-time and fuel use associated with each configuration as well as all initial and future costs. Included in the study are specific recommendations for energy efficiency improvements at the site. Results show that the generation systems presently in use, two full-time diesel generators, has the lowest conventional 20-year life cycle costs (LCC) of the six systems evaluated. However, when emissions costs are included (per NPS guidelines), several of the PV hybrid alternatives attain a lower LCC than the diesel-only systems. General discussion of the effects of initial versus future costs of PV hybrids as they compare with engine generator system is presented. (Author)

  1. Atmospheric lidar multi-user instrument system definition study

    Science.gov (United States)

    Greco, R. V. (Editor)

    1980-01-01

    A spaceborne lidar system for atmospheric studies was defined. The primary input was the Science Objectives Experiment Description and Evolutionary Flow Document. The first task of the study was to perform an experiment evolutionary analysis of the SEED. The second task was the system definition effort of the instrument system. The third task was the generation of a program plan for the hardware phase. The fourth task was the supporting studies which included a Shuttle deficiency analysis, a preliminary safety hazard analysis, the identification of long lead items, and development studies required. As a result of the study an evolutionary Lidar Multi-User Instrument System (MUIS) was defined. The MUIS occupies a full Spacelab pallet and has a weight of 1300 kg. The Lidar MUIS laser provides a 2 joule frequency doubled Nd:YAG laser that can also pump a tuneable dye laser wide frequency range and bandwidth. The MUIS includes a 1.25 meter diameter aperture Cassegrain receiver, with a moveable secondary mirror to provide precise alignment with the laser. The receiver can transmit the return signal to three single and multiple photomultiple tube detectors by use of a rotating fold mirror. It is concluded that the Lidar MUIS proceed to program implementation.

  2. Comparative Study Between Wind and Photovoltaic (PV) Systems

    Science.gov (United States)

    Taha, Wesam

    This paper reviews two renewable energy systems; wind and photovoltaic (PV) systems. The common debate between the two of them is to conclude which one is better, in terms of cost and efficiency. Therefore, comparative study, in terms of cost and efficiency, is attempted. Regarding total cost of both, wind and PV systems, many parameters must be taken into consideration such as availability of energy (either wind or solar), operation and maintenance, availability of costumers, political influence, and the components used in building the system. The main components and parameters that play major role in determining the overall efficiency of wind systems are the wind turbine generator (WTG), gearbox and control technologies such as power, and speed control. On the other hand, in grid-connected PV systems (GCPVS), converter architecture along with maximum power point tracking (MPPT) algorithm and inverter topologies are the issues that affects the efficiency significantly. Cost and efficiency analyses of both systems have been carried out based on the statistics available till today and would be useful in the progress of renewable energy penetration throughout the world.

  3. Public health preparedness in Alberta: a systems-level study

    Directory of Open Access Journals (Sweden)

    Noseworthy Tom

    2006-12-01

    Full Text Available Abstract Background Recent international and national events have brought critical attention to the Canadian public health system and how prepared the system is to respond to various types of contemporary public health threats. This article describes the study design and methods being used to conduct a systems-level analysis of public health preparedness in the province of Alberta, Canada. The project is being funded under the Health Research Fund, Alberta Heritage Foundation for Medical Research. Methods/Design We use an embedded, multiple-case study design, integrating qualitative and quantitative methods to measure empirically the degree of inter-organizational coordination existing among public health agencies in Alberta, Canada. We situate our measures of inter-organizational network ties within a systems-level framework to assess the relative influence of inter-organizational ties, individual organizational attributes, and institutional environmental features on public health preparedness. The relative contribution of each component is examined for two potential public health threats: pandemic influenza and West Nile virus. Discussion The organizational dimensions of public health preparedness depend on a complex mix of individual organizational characteristics, inter-agency relationships, and institutional environmental factors. Our study is designed to discriminate among these different system components and assess the independent influence of each on the other, as well as the overall level of public health preparedness in Alberta. While all agree that competent organizations and functioning networks are important components of public health preparedness, this study is one of the first to use formal network analysis to study the role of inter-agency networks in the development of prepared public health systems.

  4. User Systems Architectures - Two studies in design and assessment.

    Science.gov (United States)

    Tainsh, Michael

    2018-04-01

    The concept of User System Architectures (USA) is introduced as part of the overall systems architecture. A USA is defined as a set of ergonomics information and knowledge assembled to represent system structure and content. It is described in the context of the system development lifecycle. The characteristics associated with a USA are outlined. These include layers of description, viewpoints, coherency and traceability. The concept of coherency between layers and the techniques for tracing the design characteristics back to the requirements (i.e. traceability) are discussed with their implications for ergonomics. Two studies (one design and one assessment) are used to demonstrate the use of USA techniques. The benefits, shortfalls and costs of using the USA technique are outlined for each case, and in a more general range of applications. The validity and reliability of the representations are discussed. Copyright © 2017 Elsevier Ltd. All rights reserved.

  5. Experimental study of hydronic panels system and its environment

    Energy Technology Data Exchange (ETDEWEB)

    Diaz, Nestor Fonseca [University of Liege Belgium, Thermodynamics Laboratory, Campus du Sart Tilman, Bat: B49 - P33, B-4000 Liege (Belgium); Universidad Tecnologica de Pereira, Facultad de Ingenieria Mecanica (Colombia)

    2011-01-15

    An experimental analysis of hydronic cooling or heating ceiling panels coupled to the building is present in this investigation as a part of the commissioning study of this system. Two test chambers are adapted in a way to reproduce the interaction of the system to the building (windows, internal thermal loads distribution, building structure and ventilation). A series of experimental tests were performed in which the main objective is to observe the influence of parameters such as the water mass flow rate, supply water temperature, thermal load distribution, window and ventilation system effects on the hydronic ceiling capacity and comfort conditions. Test results show that the influence of asymmetric surfaces temperatures inside the room, especially the window effect is not negligible. Then, it is clear that the cooling hydronic ceiling must be evaluated coupled to the building systems and structure. (author)

  6. Experimental study of hydronic panels system and its environment

    Energy Technology Data Exchange (ETDEWEB)

    Fonseca Diaz, Nestor, E-mail: nestorfonseca5@hotmail.co [University of Liege Belgium, Thermodynamics Laboratory, Campus du Sart Tilman, Bat: B49 - P33, B-4000 Liege (Belgium); Universidad Tecnologica de Pereira, Facultad de Ingenieria Mecanica (Colombia)

    2011-01-15

    An experimental analysis of hydronic cooling or heating ceiling panels coupled to the building is present in this investigation as a part of the commissioning study of this system. Two test chambers are adapted in a way to reproduce the interaction of the system to the building (windows, internal thermal loads distribution, building structure and ventilation). A series of experimental tests were performed in which the main objective is to observe the influence of parameters such as the water mass flow rate, supply water temperature, thermal load distribution, window and ventilation system effects on the hydronic ceiling capacity and comfort conditions. Test results show that the influence of asymmetric surfaces temperatures inside the room, especially the window effect is not negligible. Then, it is clear that the cooling hydronic ceiling must be evaluated coupled to the building systems and structure.

  7. Study on the Support Systems for Corporate Governance

    Directory of Open Access Journals (Sweden)

    Claudiu BRANDAS

    2011-01-01

    Full Text Available The problems generated by the information asymmetry within the agency relationships at corporation level, governments and capital markets led to a higher necessity for corporate governance (CG. The information system of corporate governance is a very complex one, which involves a series of actors, decision-making and transactional processes, technologies, procedures and good practice codes. In order to ensure the efficiency and efficacy of corporate governance as a premise for increasing company’s performance and position consolidation for the company on the capital market, it is necessary to analyze the way information technology could contribute to this undertaking. The purpose of this study is to analyze the architecture of the corporate governance systems and to identify and classify the systems and technologies involved in ensuring CG support in order to underlie the basis for developing a conceptual model for a hybrid and collaborative support system for corporate governance.

  8. NATO Advanced Study Institute on Hamiltonian Dynamical Systems and Applications

    CERN Document Server

    2008-01-01

    Physical laws are for the most part expressed in terms of differential equations, and natural classes of these are in the form of conservation laws or of problems of the calculus of variations for an action functional. These problems can generally be posed as Hamiltonian systems, whether dynamical systems on finite dimensional phase space as in classical mechanics, or partial differential equations (PDE) which are naturally of infinitely many degrees of freedom. This volume is the collected and extended notes from the lectures on Hamiltonian dynamical systems and their applications that were given at the NATO Advanced Study Institute in Montreal in 2007. Many aspects of the modern theory of the subject were covered at this event, including low dimensional problems as well as the theory of Hamiltonian systems in infinite dimensional phase space; these are described in depth in this volume. Applications are also presented to several important areas of research, including problems in classical mechanics, continu...

  9. Insights from Systems Biology in Physiological Studies: Learning from Context

    Directory of Open Access Journals (Sweden)

    Pedro Henrique Imenez Silva

    2017-06-01

    Full Text Available Systems biology presents an integrated view of biological systems, focusing on the relations between elements, whether functional or evolutionary, and providing a rich framework for the comprehension of life. At the same time, many low-throughput experimental studies are performed without influence from this integrated view, whilst high-throughput experiments use low-throughput results in their validation and interpretation. We propose an inversion in this logic, and ask which benefits could be obtained from a holistic view coming from high-throughput studies―and systems biology in particular―in interpreting and designing low-throughput experiments. By exploring some key examples from the renal and adrenal physiology, we try to show that network and modularity theory, along with observed patterns of association between elements in a biological system, can have profound effects on our ability to draw meaningful conclusions from experiments.

  10. Triplet-Triplet Energy Transfer Study in Hydrogen Bonding Systems.

    Science.gov (United States)

    Wang, Zhijia; Zhao, Jianzhang; Guo, Song

    2015-01-01

    The 2,6-diiodoBodipy-styrylBodipy hydrogen bonding system was prepared to study the effect of hydrogen bonding on the triplet-triplet-energy-transfer (TTET) process. 2,6-DiiodoBodipy linked with N-acetyl-2,6-diaminopyridine (D-2) was used as the triplet energy donor, and the styrylBodipy connected with thymine (A-1) was used as triplet energy acceptor, thus the TTET process was established upon photoexcitation. The photophysical processes of the hydrogen bonding system were studied with steady-state UV-vis absorption spectroscopy, fluorescence spectroscopy, fluorescence lifetime measurement and nanosecond time-resolved transient absorption spectroscopies. The TTET of the intramolecular/hydrogen bonding/intermolecular systems were compared through nanosecond transient absorption spectroscopy. The TTET process of the hydrogen bonding system is faster and more efficient (kTTET = 6.9 × 10(4) s(-1), ΦTTET = 94.0%) than intermolecular triplet energy transfer (kTTET = 6.0 × 10(4) s(-1), ΦTTET = 90.9%), but slower and less efficient than intramolecular triplet energy transfer (kTTET > 10(8) s(-1)). These results are valuable for designing self-assembly triplet photosensitizers and for the study of the TTET process of hydrogen bonding systems.

  11. District health information system assessment: a case study in iran.

    Science.gov (United States)

    Raeisi, Ahmad Reza; Saghaeiannejad, Sakineh; Karimi, Saeed; Ehteshami, Asghar; Kasaei, Mahtab

    2013-03-01

    Health care managers and personnel should be aware and literate of health information system in order to increase the efficiency and effectiveness in their organization. Since accurate, appropriate, precise, timely, valid information and interpretation of information is required and is the basis for policy planning and decision making in various levels of the organization. This study was conducted to assess the district health information system evolution in Iran according to WHO framework. This research is an applied, descriptive cross sectional study, in which a total of twelve urban and eight rural facilities, and the district health center at Falavarjan region were surveyed by using a questionnaire with 334 items. Content and constructive validity and reliability of the questionnaire were confirmed with correlation coefficient of 0.99. Obtained data were analyzed with SPSS 16 software and descriptive statistics were used to examine measures of WHO compliance. The analysis of data revealed that the mean score of compliance of district health information system framework was 35.75 percent. The maximum score of compliance with district health information system belonged to the data collection process (70 percent). The minimum score of compliance with district health information system belonged to information based decision making process with a score of 10 percent. District Health Information System Criteria in Isfahan province do not completely comply with WHO framework. Consequently, it seems that health system managers engaged with underlying policy and decision making processes at district health level should try to restructure and decentralize district health information system and develop training management programs for their managers.

  12. Aspect-Oriented Approach to Operating System Development Empirical Study

    Science.gov (United States)

    Kuusela, Jaakko; Tuominen, Harri

    This paper presents a case-study where a new programming technique is applied to an established branch of software development. The purpose of the study was to test whether or not aspect-oriented programming (AOP) could be used in operating systems development. Instead of any real world operating system an educational OS with the name Nachos was used. This was because Nachos is written in Java which makes it easy to introduce aspect-oriented techniques. In this paper a new file system for the Nachos OS is developed and then it is analyzed by profiling and metrics. The results show that it is possible to use AOP in OS development and that it is also beneficial to do so.

  13. A systematic study of binaural reproduction systems through loudspeakers

    DEFF Research Database (Denmark)

    Lacouture Parodi, Yesenia

    This Ph.D. thesis presents an investigation of the acoustical and psycho-acoustical characteristics of binaural reproduction systems through loudspeakers. The study was mainly focused on the characteristics of closely spaced loudspeakers – known as stereo-dipoles – when placed at different...... positions, e.g. in front of, above or in the back of the head. The main objective of this study is to set foundations for the design of a binaural reproduction system that is robust to head rotations and reduces front-back confusions. Different crosstalk cancellation techniques were investigated...... when the loudspeakers are placed above the head and that closely spaced loudspeakers are more robust to lateral displacements than wider span angles. Based on the results obtained from those experiments, a binaural reproduction system that uses three stereo-dipoles is proposed: one pair in front...

  14. Hydrodynamic studies in designing of fluidized bed system

    International Nuclear Information System (INIS)

    Mohamad Puad Abu; Muhd Noor Muhd Yunus; Syed Nasaruddin Syed Idris

    2002-01-01

    Fluidized bed process have been used mostly in the petroleum and paper industries, and for processing nuclear wastes, spent cook liquor, wood chips, and sewage sludge disposal. Even at MINT some of the equipment available used this principal. Before we use or purchase this equipment, it is very grateful if we could understand how the system has been designed. The hydrodynamic fluidization studies is very important in designing of fluidized bed system especially in determining the minimum fluidizing velocity, terminal velocity, flexibility of operation, slugging condition, bubble size and velocity, and transport disengaging height. They can be determined either by calculation or experimentation. This paper will highlight the hydrodynamic study that need to be performed in designing of fluidized bed system so that its can be used appropriately. (Author)

  15. Echinoderm systems for gene regulatory studies in evolution and development.

    Science.gov (United States)

    Arnone, Maria Ina; Andrikou, Carmen; Annunziata, Rossella

    2016-08-01

    One of the main challenges in Evolutionary Developmental Biology is to understand to which extent developmental changes are driven by regulatory alterations in the genomic sequence. In the recent years, the focus of comparative developmental studies has moved towards a systems biology approach providing a better understanding of the evolution of gene interactions that form the so called Gene Regulatory Networks (GRN). Echinoderms provide a powerful system to reveal regulatory mechanisms and within the past decade, due to the latest technological innovations, a great number of studies have provided valuable information for comparative GRN analyses. In this review we describe recent advances in evolution of GRNs arising from echinoderm systems, focusing on the properties of conserved regulatory kernels, circuit co-option events and GRN topological rearrangements. Copyright © 2016 Elsevier Ltd. All rights reserved.

  16. Nuclear Hybrid Energy Systems Regional Studies: West Texas & Northeastern Arizona

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, Humberto E. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Chen, Jun [Idaho National Lab. (INL), Idaho Falls, ID (United States); Kim, Jong Suk [Idaho National Lab. (INL), Idaho Falls, ID (United States); McKellar, Michael George [Idaho National Lab. (INL), Idaho Falls, ID (United States); Deason, Wesley R [Idaho National Lab. (INL), Idaho Falls, ID (United States); Vilim, Richard B. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Bragg-Sitton, Shannon M. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Boardman, Richard D. [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2015-04-01

    The primary objective of this study is to conduct a preliminary dynamic analysis of two realistic hybrid energy systems (HES) including a nuclear reactor as the main baseload heat generator (denoted as nuclear HES or nuclear hybrid energy systems [[NHES]) and to assess the local (e.g., HES owners) and system (e.g., the electric grid) benefits attainable by the application of NHES in scenarios with multiple commodity production and high penetration of renewable energy. It is performed for regional cases not generic examples based on available resources, existing infrastructure, and markets within the selected regions. This study also briefly addresses the computational capabilities developed to conduct such analyses, reviews technical gaps, and suggests some research paths forward.

  17. Social capital calculations in economic systems: Experimental study

    Science.gov (United States)

    Chepurov, E. G.; Berg, D. B.; Zvereva, O. M.; Nazarova, Yu. Yu.; Chekmarev, I. V.

    2017-11-01

    The paper describes the social capital study for a system where actors are engaged in an economic activity. The focus is on the analysis of communications structural parameters (transactions) between the actors. Comparison between transaction network graph structure and the structure of a random Bernoulli graph of the same dimension and density allows revealing specific structural features of the economic system under study. Structural analysis is based on SNA-methodology (SNA - Social Network Analysis). It is shown that structural parameter values of the graph formed by agent relationship links may well characterize different aspects of the social capital structure. The research advocates that it is useful to distinguish the difference between each agent social capital and the whole system social capital.

  18. Quantitative application study on the control system of contract progress

    International Nuclear Information System (INIS)

    Hu Xiaocong; Kang Rujie; Zhan Li

    2012-01-01

    Quantitative application study on the control system of contract progress, which is based on project management theory and PDCA cycle methods, provides a new way for the contract business management of enterprise, in line with the current situation and the nuclear power enterprise performance management needs. The concept of the system, system development, program design and development of ERP (VBA design) which come from the work experience summary of business managers are convenient and feasible in practical applications. By way of the applications in 2009, 2010, 2011 three-year overhaul contract management and continuous adjustment it has become an important business management tool, which not only effectively guaranteed the contract time and efficiency, but also combines the performance management and contract progress management. This study has provided useful reference for the enterprise management. (authors)

  19. A Study on the optimal distribution planning using computer system

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Soon Tae; Mun, Byung Hwa; Jang, Jung Tae; Hwang, Su Cheun; Kim, Ju Yong [Korea Electric Power Corp. (KEPCO), Taejon (Korea, Republic of). Research Center; Mun, Young Hwan; Choi, Sang Bong [Korea Inst. of Energy and Resources, Daeduk (Korea, Republic of); Kim, Jae Cheul; Han, Sung Ho [Electrical Engineering and Science Research Institute (Korea, Republic of)

    1995-12-31

    The main purpose of this study is to improve the CADPAD package to be convenient for the user and solve problems possibly to be emerged in application to three real distribution system of KEPCO (Kandong, Chungnam, Changwon branch) and retrofit the DISCAN program such as its modification of output function mouse manipulation, load creation / allocation, on-line help. In addition, problems concerned with practical application of investment / financing planning, load forecasting technique and reliability of system have been reviewed and also methods to raise the function of the package for extended application to other KEPCO`s distribution systems including interface with the programs already in use have been studied. (author). 61 refs., 114 figs.

  20. Study of TXRF experimental system by Monte Carlo simulation

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Ana Cristina M.; Leitao, Roberta G.; Lopes, Ricardo T., E-mail: ricardo@lin.ufrj.br [Nuclear Instrumentation Laboratory, Nuclear Engineering Program/COPPE Federal University of Rio de Janeiro (UFRJ), RJ (Brazil); Anjos, Marcelino J., E-mail: marcelin@uerj.br [State University of Rio de Janeiro (UERJ/IFADT/DFAT), RJ (Brazil); Conti, Claudio C., E-mail: ccconti@ird.gov.br [Instituto de Radioprotecao e Dosimetria, (IRD/CNEN-RJ), Rio de janeiro, RJ (Brazil)

    2011-07-01

    The Total-Reflection X-ray Fluorescence (TXRF) technique offers unique possibilities to study the concentrations of a wide range of trace elements in various types of samples. Besides that, the TXRF technique is widely used to study the trace elements in biological, medical and environmental samples due to its multielemental character as well as simplicity of sample preparation and quantification methods used. In general the TXRF experimental setup is not simple and might require substantial experimental efforts. On the other hand, in recent years, experimental TXRF portable systems have been developed. It has motivated us to develop our own TXRF portable system. In this work we presented a first step in order to optimize a TXRF experimental setup using Monte Carlo simulation by MCNP code. The results found show that the Monte Carlo simulation method can be used to investigate the development of a TXRF experimental system before its assembly. (author)