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Sample records for vieja relations temporelles

  1. Distribution spatio-temporelle du zooplancton en relation avec les ...

    African Journals Online (AJOL)

    SARAH

    31 oct. 2014 ... lotique. Mots clés : zooplancton, eutrophisation, distribution spatio-temporelle, rivière Kondi, Douala. Journal of Applied Biosciences 82:7326 – 7338. ISSN 1997–5902 ...... Maroc subissent une nette augmentation après avoir reçu les effluents de la ville de Taourirt. La légère amélioration observée à la ...

  2. Renewable Energy Development on Tribal Lamds of Viejas

    Energy Technology Data Exchange (ETDEWEB)

    Terrence Meyer (Black & Veatch); Mike Elenbaas (Black & Veatch)

    2005-09-30

    The purpose of this study is to investigate the feasibility of Renewable Energy Development on the lands of the Viejas Band of the Kumeyaay Indian Nation. In addition, the study will investigate the feasibility of forming a renewable energy based tribal utility. Viejas contracted with Black & Veatch and Fredericks, Pelcyger & Hester, LLC to assist in the development of a feasibility study to ascertain the economics and operational factors of forming an electric and water utility. This report is the result of the investigation conducted by Black & Veatch, with input from Viejas Tribal Government.

  3. Dynamique de structuration spatio-temporelle des populations de ...

    African Journals Online (AJOL)

    Dynamique de structuration spatio-temporelle des populations de familles de macroinvertébrés dans un continuum lac de barrage-effluent-fleuve issu de périmètre irrigué. Bassin de la Volta (Burkina Faso)

  4. Temporal relationships between the variations of diffuse gaseous emanations and the explosive activity of some active volcanoes of Costa-Rica, examples at the Arenal, Irazu and at the Rincon de la Vieja; Relations temporelles entre les variations des emanations gazeuses diffuses et l`activite explosive de quelques volcans actifs du Costa-Rica, exemples a l`Arenal, l`Irazu et au Rincon de la Vieja

    Energy Technology Data Exchange (ETDEWEB)

    Baubron, J C [BRGM, 45 - Orleans (France); Allard, P [CEA Centre d` Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Direction des Sciences de la Matiere; Fernandez, E [Obviscori, Heridia (Costa Rica); Hammouya, G [Observatoire de la Soufriere, IPG-P, le Houelmont, 97 - Gourgeyre (France); Soto, G J [ICE, San Jose (Costa Rica)

    1997-12-31

    The surveillance of the temporal evolution of radon and helium concentrations in the carbon dioxide of crater fumaroles and gaseous emanations is performed since 1992 on the Irazu, Arenal, Poas and Rincon de la Vieja volcanoes in Costa-Rica. The {sup 3}He/{sup 4}He ratio is used as an indicator of the deep origin of the volcanic gas while radon is an indicator of the CO{sub 2} flux. Radon measurements performed on the Irazu show a continuous decay of radon concentration in the intra-crater fumaroles with an important increase of the gaseous flux since 1992. On the contrary, the external fumaroles on the NW flank were characterized by an important increase in radon concentration in 1994 with a stable flux. The radon surveillance performed in soils around the volcano has shown an intense increase of the diffuse gaseous flows probably linked to the micro-seismic activity of the volcano. Similar observations are reported for the Rincon de la Vieja volcano and correlated with its eruptive history and its phreatic and phreato-magmatic activity. Short paper. (J.S.).

  5. Temporal relationships between the variations of diffuse gaseous emanations and the explosive activity of some active volcanoes of Costa-Rica, examples at the Arenal, Irazu and at the Rincon de la Vieja; Relations temporelles entre les variations des emanations gazeuses diffuses et l`activite explosive de quelques volcans actifs du Costa-Rica, exemples a l`Arenal, l`Irazu et au Rincon de la Vieja

    Energy Technology Data Exchange (ETDEWEB)

    Baubron, J.C. [BRGM, 45 - Orleans (France); Allard, P. [CEA Centre d`Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Direction des Sciences de la Matiere; Fernandez, E. [Obviscori, Heridia (Costa Rica); Hammouya, G. [Observatoire de la Soufriere, IPG-P, le Houelmont, 97 - Gourgeyre (France); Soto, G.J. [ICE, San Jose (Costa Rica)

    1996-12-31

    The surveillance of the temporal evolution of radon and helium concentrations in the carbon dioxide of crater fumaroles and gaseous emanations is performed since 1992 on the Irazu, Arenal, Poas and Rincon de la Vieja volcanoes in Costa-Rica. The {sup 3}He/{sup 4}He ratio is used as an indicator of the deep origin of the volcanic gas while radon is an indicator of the CO{sub 2} flux. Radon measurements performed on the Irazu show a continuous decay of radon concentration in the intra-crater fumaroles with an important increase of the gaseous flux since 1992. On the contrary, the external fumaroles on the NW flank were characterized by an important increase in radon concentration in 1994 with a stable flux. The radon surveillance performed in soils around the volcano has shown an intense increase of the diffuse gaseous flows probably linked to the micro-seismic activity of the volcano. Similar observations are reported for the Rincon de la Vieja volcano and correlated with its eruptive history and its phreatic and phreato-magmatic activity. Short paper. (J.S.).

  6. Monitoring diffuse degassing in monogentic volcanic field during a quiescent period: the case of Cumbre Vieja (La Palma,Canary Islands, Spain)

    Science.gov (United States)

    Burns, F.; Cole, M.; Vaccaro, W.; Alonso Cótchico, M.; Melián, G.; Asensio-Ramos, M.; Padron, E.; Hernandez Perez, P. A.; Perez, N. M.

    2017-12-01

    Volcanic activity at La Palma (Canary Islands) in the last 123 ka has taken place exclusively at the southern part of the island, where Cumbre Vieja volcano, which is characterized by a main north-south rift zone 20 km long and up to 1950 m in elevation and covering an area of 220 km2 with vents located also at the northwest and northeast. Cumbre Vieja is the most active basaltic volcano in the Canaries with 7 historical eruptions being San Juan (1949) and Teneguía (1971) the most recent ones. Since no visible degassing (fumaroles, etc.) at Cumbre Vieja occurs, our geochemical program for the volcanic surveillance of Cumbre Vieja is mainly focused on diffuse degassing monitoring. Diffuse CO2 emission surveys are yearly performed in summer to minimize the influence of meteorological variations. About 570 sampling sites were selected for each survey to obtain a homogeneous distribution after taking into consideration the local geology, structure, and accessibility. Measurements of soil CO2 efflux were performed in situ by means of a portable non-dispersive infrared sensor following the accumulation chamber method. The soil CO2 efflux values of the 2017 survey ranged from non-detectable to 47.7 g m-2 d-1. Statistical-graphical analysis of the data show two different geocheleemical populations; background (B) and peak (P) represented by 98.2% and 1.8% of the total data, respectively. The geometric means of the B and P populations are 2.9 and 36.5 g m-2 d-1, respectively. Most of the area showed B values while the P values were mainly observed both flanks of the main N-S volcanic rift. To estimate the diffuse CO2 emission in metric tons per day released from Cumbre Vieja (220 km2) for the 2017 survey, we ran about 100 sGs simulations. The estimated 2017 diffuse CO2 output released to atmosphere by Cumbre Vieja was at 801 ± 27 t d-1, value relatively higher than the background average of CO2 emission estimated on 374 t d-1 and within the background range of 132 t d-1

  7. New structural, hydrogeological and hydrothermal insights on Cumbre Vieja (La Palma, Canary Islands, Spain)

    Science.gov (United States)

    Barde-Cabusson, S.; Finizola, A.; Torres, P.; Víctor Villasante-Marcos, V.; Abella, R.; Aragó, S.; Berthod, C.; Ibarra, P.; Geyer Traver, A.

    2013-12-01

    Determining the link between shallow structure and volcanism is a topic of interest in Volcanology. We carried out a geophysical study devoted to the characterization of the major structural limits influencing volcanic hydrothermal activity and underground meteoric circulations in La Palma (Canary Islands). Since 1 Ma volcanic activity concentrates at the southern half of the island, on the Cumbre Vieja volcanic rift-zone. During the 1949 eruption a N-S fault system, facing west, developed in the summit area of Cumbre Vieja. This was interpreted as the surface expression of an incipient deformation zone on the western flank. The distribution of the recent activity and faulting indicate that a discontinuity may be present beneath the western flank of Cumbre Vieja, along which a future collapse may occur. Our study, which combines the application of self-potential and soil temperature measurements, provides new information to characterize and locate the limits guiding upward or downward fluid circulation and possibly associated to future failures and potential landslides on the Cumbre Vieja rift-zone. We found a clear asymmetry of the self-potential signal between the eastern and the western flanks of Cumbre Vieja. Strong infiltration of meteoric water seems to affect most of the summit axis while we observe poor variation in the self-potential values on the western flank. This could be explained by a constant thickness of the vadose zone on this flank, i.e., the presence of an impermeable layer at constant depth. This layer could correspond to the landslide interface associated to the previous Cumbre Nueva edifice destruction, on which Cumbre Vieja is currently growing. This constant self-potential pattern is interrupted by at least one other main infiltration zone, near Tajuya volcano, at 1200 m a.s.l. on the western flank, where field observation allowed identifying a small horst-graben system. However it is not clear if this fault system results from local

  8. Dynamics of diffuse carbon dioxide emissions from Cumbre Vieja volcano, La Palma, Canary Islands

    Science.gov (United States)

    Padrón, Eleazar; Pérez, Nemesio M.; Rodríguez, Fátima; Melián, Gladys; Hernández, Pedro A.; Sumino, Hirochika; Padilla, Germán; Barrancos, José; Dionis, Samara; Notsu, Kenji; Calvo, David

    2015-04-01

    We report herein the results of 13 soil CO2 efflux surveys at Cumbre Vieja volcano, La Palma Island, the most active basaltic volcano in the Canary Islands. The CO2 efflux measurements were undertaken using the accumulation chamber method between 2001 and 2013 to constrain the total CO2 output from the studied area and to evaluate occasional CO2 efflux surveys as a volcanic surveillance tool for Cumbre Vieja. Soil CO2 efflux values ranged from non-detectable up to 2442 g m-2 days-1, with the highest values observed in the south, where the last volcanic eruption took place (Teneguía, 1971). Isotopic analyses of soil gas carbon dioxide suggest an organic origin as the main contribution to the CO2 efflux, with a very small magmatic gas component observed at the southern part of the volcano. Total biogenic and magmatic combined CO2 emission rates showed a high temporal variability, ranging between 320 and 1544 t days-1 and averaging 1147 t days-1 over the 220-km2 region. Two significant increases in the CO2 emission observed in 2011 and 2013 were likely caused by an enhanced magmatic endogenous contribution revealed by significant changes in the 3He/4He ratio in a CO2-rich cold spring. The relatively stable emission rate presented in this work defines the background CO2 emission range for Cumbre Vieja during a volcanic quiescence period.

  9. Desarrollo humano, eutopía y viejas palabras

    Directory of Open Access Journals (Sweden)

    Chaime Marcuello Servós

    2005-01-01

    Full Text Available El propósito de este artículo es presentar un marco conceptual a la noción de desarrollo humano como parte importante de una vieja pregunta en ocasiones olvidada, censurada y desde hace un tiempo recuperada por las ciencias sociales; esto es, la pregunta por la buena sociedad. Esta cuestión es algo más que un llamado ético o axiológico. Sus repercusiones son hondas y tienen un contenido social, político, económico y jurídico inevitable. El reto es recuperar una pregunta que va más allá del positivismo tecnocientífico que ha hecho de los datos cuantitativos, del economicismo, de los números y de la falta de crítica una nueva forma de alienación. En este aparente viaje a ninguna parte, no basta con reconocerse como copartícipes del destino de Sísifo, tentados por el carpe diem de Baco o hipnotizados por la vocación de Prometeo y Vulcano. El desarrollo humano ha sido un nuevo paradigma y un cambio de referentes, pero también tiene mucho de re-descubrimiento de viejas palabras.

  10. Habana Vieja, patrimonio vivo

    Directory of Open Access Journals (Sweden)

    Marlén Palet

    2007-01-01

    Full Text Available Con la declaratoria del Centro Histórico como Monumento Nacional en 1978, el inicio de los Planes de Restauración en 1981, y un año después, la inclusión en la lista del Patrimonio Mundial, se inició una etapa en que, no ajenos a una tendencia internacional, se veía el patrimonio cultural y lo relativo a su salvaguarda, bajo un prisma de mecenazgo, es decir, la necesidad de recuperar los valores heredados en su dimensión sociocultural…Ya más adelante fuimos incorporando la temática económica en la salvaguarda patrimonial, donde el territorio adquiere la dimensión de activo económico capaz de auto-sustentar su propia recuperación (Leal, 2004. Las palabras del Historiador de La Habana, en la conferencia dictada en el Forum Universal de las Culturas en Barcelona 2004, sintetizan en pocas líneas lo mucho que en apenas 25 años se ha realizado en materia de rehabilitación del casco histórico de la capital cubana. Indudablemente, una sabia conducción y una voluntad política de los Gobiernos, tanto Local como Nacional, han comenzado a dar resultados favorables en la comunidad. El objetivo del presente trabajo es brindar un análisis del impacto de la rehabilitación de La Habana Vieja en el desenvolvimiento de la población y en la valoración y protagonismo que va activándose en la propia localidad para llevar a cabo la estrategia de desarrollo trazada. Numerosos son los programas que se llevan a cabo con éxito de forma participativa en simultáneo con la obra restauradora. Desde el rescate de monumentos y viejas tradiciones, hasta la atención especializada de los grupos poblacionales más vulnerables. El espacio urbano va cambiando, adquiriendo nuevas funciones u otras perdidas en etapas precedentes; la reconstrucción que se experimenta lleva implícito nuevos procesos territoriales que van remodelando el sistema ambiental local.

  11. [Costs estimation of tuberculosis cases detection. La Habana Vieja Municipality, Cuba. 2002].

    Science.gov (United States)

    Peralta Pérez, Mariana; Gálvez González, Ana M; González Ochoa, Edilberto

    2007-01-01

    The Cuban Tuberculosis Control Program has been able to significantly reduce the tuberculosis cases incidence in all its forms. La Habana Vieja municipality has maintained the highest incidence in Havana City province during 5 years and one of the highest in the country. To estimate the cost of Tuberculosis cases detection in Habana Vieja municipality, in the year 2002. A descriptive retrospective study to estimate the costs with social perspective was carried out. The costs of cases detection and their departures in health facilities were considered. For patients with cough/expectoration > or =14 days (RS+14) the pocket expense and monetary losses for labour absences were considered. Costs were expressed in equivalent Cuban pesos to American dollars (1 CUC = 1 USD). Information from official records in health institutions and from interviews to workers and RS+14 was obtained. Social cost of tuberculosis cases detection for an RS+14 was in average 24,11 CUC, and institutional cost was 12,55; for clinical investigation 0.37; for sputum smear microscopy 2,25; for culture 7,05; for thorax X-ray 1,67; for notification 3,07; and for registering 0,36. The biggest costs were observed in sputum smear microscopies and cultures performance; salaries and reagents were the issues contributing more in that cost. The results obtained in this study could be extrapolated to other municipalities in the country with social and economic conditions similar to La Habana Vieja.

  12. Diffuse He degassing from Cumbre Vieja volcano, La Palma, Canary Islands

    Science.gov (United States)

    Asensio-Ramos, María; De Jongh, Marli E.; Lamfers, Kristen R.; Alonso, Mar; Amonte, Cecilia; Padrón, Eleazar; Hernández, Pedro A.; Pérez, Nemesio M.

    2017-04-01

    Helium is considered as an ideal geochemical tracer due to its geochemical properties: chemical inertness, physical stability and practical insolubility in water under normal conditions. These characteristics, together with its high mobility on the crust, make the presence of helium anomalies on the surface environment of a volcanic system to be related to deep fluid migration controlled by volcano-tectonic features, also providing valuable information about the location and characteristics of the gas source and the fracturing of the crust. The recent results reported by Padrón et al. (2013) clearly show importance of helium emission studies for the prediction of major volcanic events and the importance of continuous monitoring of this gas in active volcanic regions. La Palma Island (708.32 km2) is located at the northwestern end of the Canarian Archipelago. Subaerial volcanic activity on this island started ˜2.0 My ago and has taken place exclusively at the southern part in the last 123 ka. Cumbre Vieja volcano, the most active basaltic volcano of the Canary Islands, was built in this zone, including a main north-south rift area 20 km long and up to 1,950 m in elevation, with vents located also at the northwest and northeast. Padrón et al., (2012) showed that helium is mainly emitted along both N-S and N-W rift of Cumbre Vieja, being, therefore, zones of enhanced permeability for deep gas migration and preferential routes for degassing. This work represents a continuation of the results obtained by Padrón et al. (2012) until the year 2016. Each study covered the 220 km2 of Cumbre Vieja with an average of 570 homogenously distributed sampling points. At each sampling site, soil gas samples were collected at 40 cm depth by withdrawing the gas aliquots into 60 cc hypodermic syringes. He content in the soil gases was analyzed by means of quadrupole mass spectrometry (QMS). Atmospheric gas was used periodically to calibrate the instrument. To estimate the helium

  13. Stability analysis of Western flank of Cumbre Vieja volcano (La Palma) using numerical modelling

    Science.gov (United States)

    Bru, Guadalupe; Gonzalez, Pablo J.; Fernandez-Merodo, Jose A.; Fernandez, Jose

    2016-04-01

    La Palma volcanic island is one of the youngest of the Canary archipelago, being a composite volcano formed by three overlapping volcanic centers. There are clear onshore and offshore evidences of past giant landslides that have occurred during its evolution. Currently, the active Cumbre Vieja volcano is in an early development state (Carracedo et al., 2001). The study of flank instability processes aim to assess, among other hazards, catastrophic collapse and potential tsunami generation. Early studies of the potential instability of Cumbre Vieja volcano western flank have focused on the use of sparse geodetic networks (Moss et al. 1999), surface geological mapping techniques (Day et al. 1999) and offshore bathymetry (Urgeles et al. 1999). Recently, a dense GNSS network and satellite radar interferometry results indicate ground motion consistent with deep-seated creeping processes (Prieto et al. 2009, Gonzalez et al. 2010). In this work, we present a geomechanical advanced numerical model that captures the ongoing deformation processes at Cumbre Vieja. We choose the Finite Elements Method (FEM) which is based in continuum mechanics and is the most used for geotechnical applications. FEM has the ability of using arbitrary geometry, heterogeneities, irregular boundaries and different constitutive models representative of the geotechnical units involved. Our main contribution is the introduction of an inverse approach to constrain the geomechanical parameters using satellite radar interferometry displacements. This is the first application of such approach on a large volcano flank study. We suggest that the use of surface displacements and inverse methods to rigorously constrain the geomechanical model parameter space is a powerful tool to understand volcano flank instability. A particular important result of the studied case is the estimation of displaced rock volume, which is a parameter of critical importance for simulations of Cumbre Vieja tsunamigenic hazard

  14. Hydrogeochemical and stream sediment detailed geochemical survey for Trans-Peco, Texas. Sierra Vieja survey area

    International Nuclear Information System (INIS)

    Butz, T.R.; Payne, A.G.; Grimes, J.G.; Helgerson, R.N.; Bard, C.S.

    1979-01-01

    Results of the Sierra Vieja survey area of the detailed geochemical survey for Trans-Pecos, Texas are reported. Field and laboratory data are presented for 29 groundwater and 240 stream sediment samples. Statistical and areal distributions of uranium and possible uranium-related variables are given. A generalized geologic map of the survey area is provided, and pertinent geologic factors which may be of significance in evaluating the potential for uranium mineralization are briefly discussed. Highest concentrations of uranium in groundwater predominantly occur in areas marginal to the Rio Grande. These wells and spring produce from Quaternary alluvium or the Vieja Group. High specific conductance is also associated with most of the wells located marginal to the Rio Grande. The specific conductance of wells in other areas with greater than or equal to 11.5 ppB uranium are notably lower. Higher than background concentrations of molybdenum, arsenic, and vanadium are observed with wells containing greater than or equal to 11.5 ppB uranium. Total alkalinity and pH display a variable distribution throughout the survey area. Stream sediment from several areas contain greater than or equal to 2.57 soluble uranium. In areas where these concentrations account for greater than or equal to 83% of the uranium present in the sediment, above background concentrations of sodium, aluminum, barium, potassium, zirconium, cerium, and strontium are detected. The degree to which these elements are associated with favorably high uranium concentrations is related to the relative amounts of volcaniclastic and calcareous sedimentary material incorporated in the sample

  15. Plant remains of archaeological site Casa Vieja, Callango (Ica

    Directory of Open Access Journals (Sweden)

    José Roque

    2013-06-01

    Full Text Available A paleoethnobotanical study was carried out at the Middle Horizon archaeological site of Casa Vieja, located in Callango within the Lower Ica Valley. A total of 23 species were identified, all determined to be of the Magnoliopyta Division, 78 % (or 18 species were Magnoliopsid and 22% (or 15 species Liliopsid. The Fabaceae are the best represented family with 6 species. Most of the analyzed samples correspond to seeds of Gossypium barbadense “cotton”. Seventy percent of the species were probably used as food; 48% for artifact-making and construction and 52% for medicinal and curative purposes.

  16. Hoy hace: la erupción del Rincón de la Vieja el 8 de mayo de 1991

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    Soto Bonilla, Gerardo

    2005-08-01

    Full Text Available Uno de los eventos volcánicos importantes del siglo XX en Costa Rica fue el ocurrido el 8 de mayo del año 1991 en el Volcán Rincón de la Vieja. A continuación, se muestra la información recopilada en la serie Hoy hace. concerniente a la emergencia suscitada en esa ocasión. Se incluye una relación de las principales observaciones reportadas con respecto al Volcán desde el año 1765 hasta el año 1998. El documento explica el mecanismo de la erupción principal y enlista las actividades posteriores que se dieron One of the important volcanic events of the 20th Century in Costa Rica was the one of May 8, 1991 at the Rincón de la Vieja Volcano. Following, it shows the information collected in the series Today in History (Hoy hace related to the emergency generated at that moment. It includes a relation to the main observations reported in regards to the Volcano from the year 1765 to the year 1998. The document explains the mechanism of the main eruption and lists the posterior activities

  17. Les usages de la flexibilité temporelle chez les enseignantes du secondaire The uses of flexible time by female secondary-school teachers

    Directory of Open Access Journals (Sweden)

    Julie Jarty

    2009-09-01

    Full Text Available De par sa flexibilité temporelle, il existe une perception largement répandue selon laquelle la profession enseignante serait woman-friendly, « bien pour une femme ». Le « plafond de verre » est pourtant une réalité pour de nombreuses femmes au sein de l’enseignement du second degré. Centré sur une étude des perceptions et des pratiques temporelles au sein de ce groupe professionnel dans une perspective de genre, cet article s’appuie sur une analyse critique des discours de 40 entretiens individuels réalisés auprès d’hommes et de femmes enseignant-e-s du secondaire et de leurs « carnets-temps ». Il s’agit d’explorer la manière dont ils et elles utilisent leur temps et cette flexibilité professionnelle. Le résultat de cette recherche permet de montrer que les expériences temporelles sexuées sont particulièrement prédominantes, ce qui contribue à expliquer les difficultés des femmes enseignantes à accéder aux positions les plus prestigieuses et les mieux rémunérées de la hiérarchie. Néanmoins, la mobilisation d’une typologie des expériences temporelles des enseignantes nous conduit à identifier l’existence de discours alternatifs, reconnaissant ainsi les contrastes du degré selon lequel les rapports sociaux de sexe sont reproduits, reconfigurés ou transformés au sein de la profession.Because of its temporal flexibility, there is a widespread notion that the teaching profession is ‘woman-friendly’ or “good for women”. However, there is extensive evidence that a ‘glass ceiling’ exists for female secondary school teachers too. Based on a study of temporal perceptions and practices within the teaching profession in a gendered perspective, this paper draws on the critical discourse analysis of forty individual interviews conducted with male and female secondary school teachers and of their schedules. The aim was to examine the use they make of their time and professional flexibility

  18. Composition patterns of waterbirds from La Vieja River, Geographic Valley of Cauca River, Colombia

    International Nuclear Information System (INIS)

    Ramirez Urrea, Laura Milena; Arbelaez Cortes, Enrique; Marin Gomez, Oscar Humberto; Duque Montoya, Diego

    2014-01-01

    We compiled and analyzed data gathered from observations during the period 2001-2013 in three sectors along La Vieja River, located in the Cauca River Valley, Colombia. We describe spatial and temporal aspects of such dataset, focusing in indentify patterns of species' composition and abundance. We recorded 28 waterbird species in 33 transects, being 22 species observed in more than 50 % of these transects. The species richness among transects did not shows significant differences. However, two cluster analyses, considering both presence/absence and abundance data, showed that there is spatial structure in the species composition along the river. In contrast, although observations were conducted during more than ten years there is no evidence of temporal changes in species composition. Still, some species showed increase or decrease trends in their frequency. We present a new record for one species (Chloroceryle aenea) for the region. Despite that the landscape surrounding La Vieja River has faced a high anthropogenic impact; the river still presents a significant diversity of waterbirds, which could add value to the conservation plans in the zone.

  19. Comparison of diffuse CO2 degassing at Miravalles and Rincón de la Vieja volcanoes (Guanacaste Province, Costa Rica)

    Science.gov (United States)

    Liegler, A.; Bakkar Hindeleh, H.; Deering, C. D.; Fentress, S. E.

    2015-12-01

    Volcanic gas emissions are a key component for monitoring volcanic activity, magmatic input of volatiles to the atmosphere and the assessment of geothermal potential in volcanic regions. Diffuse soil degassing has been shown to represent a major part of volcanic gas emissions. However, this type of gas emission has not yet been quantified in the Guanacaste province of Costa Rica; a region of the country with several large, active or dormant volcanoes. We conducted the first study of diffuse CO2 degassing at Rincón de la Vieja and Miravalles volcanoes, both located in Guanacaste. Diffuse degassing was measured using the accumulation chamber method to quantify CO2 flux in regions where hydrothermal surface features indicate anomalous activity. The total diffuse carbon dioxide flux estimated at Miravalles in two areas, together roughly 2 km2 in size, was 135 t/day and in several areas at Rincón de la Vieja a minimum of 4 t/day. Comparatively low flux values and a very local concentration (few m2) of CO2 flux were observed at the active Rincón de la Vieja volcano, compared to the dormant Miravalles volcano, where significant soil flux was found over extended areas, not only around vents. Our assessment of the origin of these differences leads to two possibilities depending on if the surface features on the two volcanoes are fed by a common hydrothermal system or two separate ones. In the former case, the different intensity of diffuse CO2 flux could indicate a different degassing behavior and stronger concentration of gas emissions at the active vent areas at Rincon de la Vieja. In the latter case, where the hydrothermal systems are not linked, the amount of CO2 degassed through the flanks of the volcanoes could indicate that different physical and chemical conditions are governing the degassing of the two systems.

  20. Morphometry of Vieja species (Cichlidae) in rivers of Usumacinta's basin, Chiapas, Mexico

    OpenAIRE

    Soria-Barreto, Miriam; Rodiles-Hernández, Rocío; González-Díaz, Alfonso A.

    2011-01-01

    Se evaluaron y compararon diversas características morfológicas de 6 especies de Vieja Fernández-Yépez, 1969 del río Usumacinta. Se emplearon 20 organismos adultos por especie y 33 medidas corporales que fueron estandarizadas y examinadas con un análisis discriminante. Además se comparó la forma del cuerpo entre las especies, mediante el análisis de morfometría geométrica a partir de imágenes digitalizadas. El análisis con la morfometría tradicional y geométrica permitió diferenciar los seis ...

  1. Leakage of active crater lake brine through the north flank at Rincon de la Vieja volcano, northwest Costa Rica, and implications for crater collapse

    Science.gov (United States)

    Kempter, K.A.; Rowe, G.L.

    2000-01-01

    The Active Crater at Rincon de la Vieja volcano, Costa Rica, reaches an elevation of 1750 m and contains a warm, hyper-acidic crater lake that probably formed soon after the eruption of the Rio Blanco tephra deposit approximately 3500 years before present. The Active Crater is buttressed by volcanic ridges and older craters on all sides except the north, which dips steeply toward the Caribbean coastal plains. Acidic, above-ambient-temperature streams are found along the Active Crater's north flank at elevations between 800 and 1000 m. A geochemical survey of thermal and non-thermal waters at Rincon de la Vieja was done in 1989 to determine whether hyper-acidic fluids are leaking from the Active Crater through the north flank, affecting the composition of north-flank streams. Results of the water-chemistry survey reveal that three distinct thermal waters are found on the flanks of Rincon de la Vieja volcano: acid chloride-sulfate (ACS), acid sulfate (AS), and neutral chloride (NC) waters. The most extreme ACS water was collected from the crater lake that fills the Active Crater. Chemical analyses of the lake water reveal a hyper-acidic (pH ~ 0) chloride-sulfate brine with elevated concentrations of calcium, magnesium, aluminum, iron, manganese, copper, zinc, fluorine, and boron. The composition of the brine reflects the combined effects of magmatic degassing from a shallow magma body beneath the Active Crater, dissolution of andesitic volcanic rock, and evaporative concentration of dissolved constituents at above-ambient temperatures. Similar cation and anion enrichments are found in the above-ambient-temperature streams draining the north flank of the Active Crater. The pH of north-flank thermal waters range from 3.6 to 4.1 and chloride:sulfate ratios (1.2-1.4) that are a factor of two greater than that of the lake brine (0.60). The waters have an ACS composition that is quite different from the AS and NC thermal waters that occur along the southern flank of Rincon

  2. Le siège Mers-el-Kebir sous le siège de 1563 et la dimension spatio-temporelle dans “ El Gallardo espagnol ” de M. de Cervantes

    OpenAIRE

    Abi Ayad, Ahmed

    2013-01-01

    Nous avons choisi l’œuvre du grand romancier espagnol de l’époque moderne pour illustrer notre thématique relative à la dimension spatio-temporelle dans le Gallardo espagnol de Miguel de Cervantes.Nous essayons d’abord de vous exposer l’argument fondamental de cette pièce dramatique qui relate un événement capital de l’histoire d’Oran et des affrontements avec l’occupation espagnole, suite à conquête des places de Mers- el-Kebir et d’Oran en 1504 et 1509.Miguel de Cervantes s’inspire ici du c...

  3. Viejas y nuevas formas de hacer política: el Buen gobierno comunitario

    OpenAIRE

    Mandujano Estrada, Miguel

    2016-01-01

    En el marco de las viejas y nuevas formas de acción política, este trabajo presenta el Buen gobierno comunitario, una experiencia de intensificación democrática llevada a cabo por el pueblo indígena de Cherán, en México. En el centro del argumento, la propuesta presenta el caso como una imagen del sufrimiento y crítica a la idea de Estado nación en la que el Buen gobierno se alza como una forma decolonial más allá de la línea abismal moderna

  4. La disponibilité temporelle au travail des femmes : une disponibilité sans contrepartie ? Women’s temporal availability at work : no compensation ?

    Directory of Open Access Journals (Sweden)

    François-Xavier Devetter

    2009-06-01

    Full Text Available Cet article s’appuie sur une vision enrichie du temps de travail (la disponibilité temporelle au travail, incluant la durée, la localisation et la prévisibilité des horaires pour étudier les différences de valorisation des contraintes temporelles entre hommes et femmes. Il apparaît que, certes, les femmes semblent avoir une disponibilité au travail plus réduite (notamment en début de carrière mais surtout que les écarts entre genres ne portent pas sur les mêmes dimensions du temps. La reconnaissance sociale (notamment par l’employeur des contraintes touchant les femmes semble bien plus faible que dans le cas des hommes.This article uses a broader concept of working time than mere duration (time availability at work encompassing the volume of hours worked but also the scheduling and predictability of those hours, to examine the gender gap concerning temporal constraints. Women seem to dispose of fewer possibilities to make themselves available at work than men but, more importantly, this gap does not involve the same aspects of time. The temporal constraints experienced mainly by women are less socially visible and hence undervalued by their employers.

  5. La glosa de 1541 a los refranes que dizen las viejas tras el fuego

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    Hugo O. Bizzarri

    2001-11-01

    Full Text Available The Marqués de Santillana's Refranes que dizen las viejas tras el fuego had a widely Spreads diffusion during the XVIth century. The printing made in 1541 by Francisco Fernández de Córdoba not only points out a particular way of reception -that of the illustrated collection with short moral glosses- but also was one of the fundamental sources to Juan de Mal Lara's Philosophia vulgar (Sevilla, 1568. A transcription of the1541 printing preserved in only one copy which ­mproves Sbarbi's edition (1874 is presented in this article. This is, thus, an attempt to bring materials to the study of the Hispanic Refranero's early printed stage.

  6. Morfometría de las especies de Vieja (Cichlidae en ríos de la cuenca del Usumacinta, Chiapas, México Morphometry of Vieja species (Cichlidae in rivers of Usumacinta's basin, Chiapas, Mexico

    Directory of Open Access Journals (Sweden)

    Miriam Soria-Barreto

    2011-06-01

    Full Text Available Se evaluaron y compararon diversas características morfológicas de 6 especies de Vieja Fernández-Yépez, 1969 del río Usumacinta. Se emplearon 20 organismos adultos por especie y 33 medidas corporales que fueron estandarizadas y examinadas con un análisis discriminante. Además se comparó la forma del cuerpo entre las especies, mediante el análisis de morfometría geométrica a partir de imágenes digitalizadas. El análisis con la morfometría tradicional y geométrica permitió diferenciar los seis taxones. Se encontraron 10 medidas discriminantes, que expresan diferencias significativas en la longitud de las aletas y la región cefálica, de las cuales la posición de la boca diferenció estadísticamente más taxones. Las relaciones de similitud con ambos análisis mostraron 2 grupos, siendo V. bifasciata (Steindachner, 1864 y V. synspila (Hubbs, 1935 las especies más parecidas. Las gradillas de deformación mostraron que la mayor variación está en la región cefálica, específicamente en la posición de la boca y los ojos. Las diferencias morfométricas encontradas pueden servir para la determinación taxonómica en trabajos futuros. La variación encontrada en la morfología cefálica y trófica puede ser un mecanismo que favorece la coexistencia de las especies y la diversidad del grupo en la región.We evaluated and compared morphological characteristics among the 6 species of Vieja Fernández-Yépez, 1969 from Usumacinta River. We analyzed 20 adults by specie, obtaining 33 measurements, which were standardized and analyzed with a discriminant analysis. We also performed a comparison of body shape among species, using the geometric morphometric analysis from digitalized images. Traditional and geometric morphometrics allowed distinguishing each taxa. We found 10 discriminants measures, related with the head region and length of fins, only mouth position was different among more taxa. In both analyses, similarity relationships

  7. Viejas, nuevas y novísimas guerras: la conflictividad desafía la modernidad

    Directory of Open Access Journals (Sweden)

    José Manuel Pureza

    2012-02-01

    Full Text Available La comparación entre los sistemas políticos, objetivos de guerra, tipo de ejército, técnica militar y economía de guerra de las llamadas viejas guerras y de las nuevas guerras nos revela un continuum y una articulación de las causas de la violencia y de las guerras, que, a su vez, tienen manifestaciones cada vez más locales (a pesar de sus impactos globales. Y subraya también la necesidad de repensar categorías y adaptar conceptos. De hecho, los contextos de paz formal (y violenta en que emergían las viejas guerras interestatales se transformaron, después del final de la Guerra Fría, en escenarios de un nuevo tipo de conflictividad violenta, a los que se ha llamado «nuevas guerras». Sin embargo, los abordajes tradicionales sobre esas «viejas guerras» invisibilizaron las señales de emergencia de los nuevos tipos de conflictividad, ya que éstos no correspondían a ninguna definición tradicional de guerra. Las características de estas (nuevas manifestaciones de la violencia han ido desafiando las fronteras entre lo que se define como guerra y lo que se define como paz. Sin embargo, los conceptos o definiciones de conflicto y de guerra no son inmutables y estáticos, son conceptos dinámicos y deben tener capacidad de adaptación a las nuevas realidades. Nuestra propuesta es precisamente que hoy día, hay espacios de indefinición o «sin nombre», normalmente entendidos como contextos de paz formal, pero que pueden contener indicios del surgimiento de nuevísimos tipos de conflictividad, cuestionando y poniendo en duda las distinciones estanques y herméticas entre escenarios de paz formal, guerra y posguerra. Comparing the political systems, war objectives, type of army, military technique and war economics of the so-called new wars reveals a continuum and a connection of the causes for violence and wars which, in turn, present increasingly local signs (in spite of their global impact. It also stresses the need

  8. Eficacia de un programa comunitario de atención temprana del neurodesarrollo en el municipio Habana Vieja. 1998-2008

    OpenAIRE

    Moreno Mora, Roberto

    2012-01-01

    Objetivo: Determinar la evolución de los pacientes con retardo en el neurodesarrollo y de niños asintomáticos con factores de riesgo, atendidos en el programa comunitario de atención temprana, del municipio Habana Vieja. Métodos: Se realizó una investigación prospectiva de evaluación entre 1998 y 2008. El total de casos en estudio fue de 372 evaluados mediante examen neurológico clásico y por escalas estandarizadas. Se organizó la investigación en tres partes: descripción del universo, result...

  9. Evaluación de la diversidad de bacterias degradadoras de hidrocarburos aisladas de suelos de las cuencas de los ríos Otún y La Vieja / Evaluation of hydrocarbon degrading bacteria diversity isolated from soils of Otún and La Vieja river basins

    OpenAIRE

    Yanine Suárez, Habib Fernando

    2010-01-01

    Se evaluó el efecto del uso del suelo, sobre la densidad y diversidad de bacterias degradadoras de hidrocarburos (HC). Se seleccionaron los usos: bosque, pastizal y cafetal en la cuenca del río La Vieja (Valle del Cauca y Quindío), y bosque, cebollar y plantación forestal en la cuenca del río Otún (Risaralda) y se realizaron dos eventos de muestreo. La densidad se evaluó mediante la técnica de NMP en medio Bushnell-Hass, suplementado con diesel y usando XTT como indicador de actividad. Las ba...

  10. El bastón de la vieja. "La niña de las rastas, el niño de las crestas"

    OpenAIRE

    Peris Girona, Juan Luis

    2014-01-01

    Treball Final de Grau en Comunicació Audiovisual. Codi:CA0932. Curs acadèmic 2013-2014 The main objective in the realization of this video has been the learning process. This means having gained the training and knowledge of the know EL BASTÓN DE LA VIEJA. “La niña de las rastas, el niño de la cresta”. Armando Gallego Martínez Juan Luis Peris Girona how in a more professional way, improving in this process our production skills, conducting and organizing a team, and our p...

  11. Dynamique spatio-temporelle de la forêt tropicale

    Science.gov (United States)

    Chave, J.

    Spatio-temporal dynamics of the tropical rain forest Mechanisms which drive the dynamics of forest ecosystems are complex, from seedling establishment to pollination, and seed dispersal by animals, running water or wind. These processes are more complex when the ecosystem shelters a large number of species and of vegetative forms, as it is the case in the tropical rainforest. To take them into account, we must develop and use models. I present a review of the fundamental mechanisms for the of a natural forest dynamics — photosynthesis, tree growth, recruitment and mortality — as well as a description of the past and of the present of tropical rainforests. This information is used to develop a spatially-explicit and individual-based forest model. Simplified models are deduced from it, and they serve to address more specific issues, such as the resilience of the forest to climate disturbances, or savanna-forest dynamics. The last topic is related to the spatio-temporal description of tropical plant biodiversity. A detailed introduction to the problem is provided, and models accounting for the maintenance of diversity are compared. These models include non spatial as well a spatial approaches (branching anihilating random walks and voter model with mutation). Les mécanismes régissant la dynamique des écosystèmes forestiers sont complexes, de l'établissement des plantules à la pollinisation et la dispersion des graines, transportées par les animaux, l'eau ou le vent. Ces processus sont d'autant plus divers que l'écosystème abrite un large nombre d'espèces et de formes végétatives, comme c'est le cas dans les forêts tropicales humides. Leur prise en compte et la compréhension de leur importance relative doit passer par la définition de modèles. Je présente une revue des différents mécanismes fondamentaux dans la dynamique d'une forêt—photosynthèse, croissance des arbres, reproduction, mortalité—ainsi qu'une description du passé et de l

  12. Conocimientos sobre implantes dentales en estomatólogos de los municipios de Centro Habana, Habana del Este y Habana Vieja Knowledge level on dental implants in stomatologists from Centro Habana, Habana del Este and Habana Vieja municipalities

    Directory of Open Access Journals (Sweden)

    Eneida García López

    2010-06-01

    Full Text Available Se realizó una investigación descriptiva transversal, con el objetivo de evaluar el nivel de conocimiento sobre implantes dentales de los estomatólogos generales básico e integrales de los municipios, Habana del Este, Centro Habana y Habana Vieja. El Ministerio de Salud Pública tiene especial interés en la implementación y generalización de las técnicas de implantología dental a nivel de los municipios por lo que esta temática se convierte en tema de necesario dominio para los estomatólogos, pues necesitan orientar, tratar y remitir a sus pacientes. Para medir los conocimientos fue aplicada una encuesta que constaba de diez preguntas, y se utilizó los criterios de conocen y desconocen, para evaluar las respuestas según su calidad. El nivel de conocimientos se clasificó en adecuado cuando la encuesta tuvo un 70 % o más de respuestas con el criterio de conocen. El nivel de conocimientos fue no adecuado para los grupos de estudios y para los municipios.A cross-sectional and descriptive research was carried out to assess the knowledge level on dental implants of Basic and Integral General Stomatologists from Habana del Este, Centro Habana and Habana Vieja municipalities and due to its spreading in the different media and the interest of our Public Health Ministry in application of this technique at municipality level it becomes necessary domain of stomatologists because of they need to guide, to treat and to refer the patients. To knowledge measurement we applied a survey including ten questions using to know and not to know criteria to assess the answers according to its quality. The knowledge level was classified as suitable when there was a 70 % or more of answers with the criterion of to know, but this knowledge level was not suitable for study groups and for the municipalities.

  13. Una nueva especie de Euglena (Euglenozoa: Euglenales aislada de ambientes extremófilos en las Pailas de Barro del Volcán Rincón de la Vieja, Costa Rica

    Directory of Open Access Journals (Sweden)

    Ana Sittenfeld

    2004-03-01

    Full Text Available Se describe una nueva especie de euglena aislada de las Pailas de Barro Caliente del Volcán Rincón de la Vieja, Costa Rica. Esta especie se caracteriza por habitar sitios ácidos y calientes. Euglena pailasensis sp. nov. tiene como características principales: la ausencia de flagelos, presencia de filamentos similares a "pilis", presencia de cloroplastos con pirenoides atravesados por varios tilacoides, además, es termotolerante y acido-tolerante. Los análisis filogenéticos para el gen ADNr 18S y la secuencia del gen para la enzima Gap C indican que la nueva especie está relacionada con E. mutabilis. Las características taxonómicas basadas en la morfología, biología y secuencia del ADNr 18S y los genes GAP C, son discutidas y comparadas con otras especies relativamente cercanas al géneroAnew species of euglena isolated from a hot and acid mud pool located in Las Pailas de Barro, Volcán Rincón de la Vieja, Costa Rica is described. This species inhabits hot and acid environments. Euglena pailasensis sp. nov. main features are: the absence of flagella, the presence filaments like "pilis", the presence of chloroplasts with pyrenoids crossed by several tylakoids, and acid and heat tolerance. Molecular phylogeny studies using 18S rDNA and Gap C genes indicated that the new species is related to E mutabilis. Its taxonomic characters based on morphology, biology and sequence of the 18S rDNA and Gap C genes are discussed and compared with other closely related species of the genus

  14. The Organization of Working Time: Developing an Understanding and Action Plan to Promote Workers' Health in a Seasonal Work Context: L'organisation temporelle du travail: la comprendre pour développer des actions favorisant la santé des travailleuses en contexte de travail saisonnier.

    Science.gov (United States)

    Major, Marie-Eve; Vézina, Nicole

    2017-11-01

    Despite the health problems associated with irregular schedules and long working hours, few studies have focused on the temporal dimension of work in seasonal working contexts. Through the monitoring of sixteen seasonal workers in the crab-processing industry over a two-year period, this study aimed to better understand their working reality and to provide a detailed picture of the temporal dimension of seasonal work as experienced by these workers. Observations of the work activity, interviews, and analysis of official documents were carried out. The findings reveal that the organization of working time and working conditions are very restrictive. These constraints are linked not only to the work environment and management but also to various public policies and ministerial directives. Methodological elements essential for the study of the organization of working time have been identified and could contribute to a better understanding of temporal constraints experienced by seasonal workers. Résumé Malgré les problèmes de santé associés aux horaires non standards et aux longues heures de travail, peu d'études se sont attardées à dégager un portrait de la dimension temporelle du travail en contexte de travail saisonnier. Par le suivi de 16 travailleuses saisonnières de l'industrie de la transformation du crabe pendant deux années, cette étude visait à mieux comprendre leur réalité de travail et à dresser un portrait détaillé de la dimension temporelle du travail saisonnier tel que vécu par ces travailleuses. Des observations du travail, des entretiens et l'analyse de documents ont été réalisés. Les résultats révèlent une organisation temporelle et des conditions de travail fort contraignantes pour ces travailleuses liées, entre autres, à l'environnement et à la gestion du travail, mais également à diverses politiques publiques et consignes ministérielles. Des éléments méthodologiques essentiels pour l'étude des temps de travail

  15. ESPACIOS TURÍSTICOS, ORDENACIÓN DEL TERRITORIO Y ACTITUDES POLÍTICAS, EL CASO DEL COMPLEJO HOTELERO CERCA VIEJA EN FUENCALIENTE DE LA PALMA (ISLAS CANARIAS. ESPAÑA

    Directory of Open Access Journals (Sweden)

    Carlos Santiago Martín Fernández

    2011-01-01

    Full Text Available El presente artículo describe los nexos o relaciones existentes entre tres aspectos de gran actualidad: el desarrollo inmobiliario-turístico, la ordenación del territorio y las estrategias políticas. Para ello, estudiamos un caso emblemático en Canarias: el proceso de construcción del Resort Cerca Vieja en Fuencaliente, isla de La Palma.

  16. La vivienda en La Habana Vieja. Desarrollo histórico, problemática actual y programas en curso

    Directory of Open Access Journals (Sweden)

    Menéndez García, Madeline

    2004-12-01

    Full Text Available The domestic architecture of Old Havana, a key aspect of its urban image, presents a variety of problems fundamentally associated with typological characteristics of the traditional house with courtyard and its development over more than four centuries of history. In spite of housing problems in the city as a whole and the fact that the oldest central areas are overcrowded and in a state of deterioration, Old Havana retains high heritage values, provided principally by its architecture, its urban ambience and its vitality. The comprehensiveness of the restoration program in the Historic Center which has been made possible by a new administration model, has led to the incorporation of diverse programs focusing on housing. These form part of an attempt to meet the challenge of preserving the residential nature of the area while at the same time providing decent and comfortable housing.La arquitectura doméstica de la Habana Vieja, protagonista principal de su imagen urbana, presenta un variado repertorio asociado, de manera fundamental, a las características tipológicas de la tradicional casa patio, en su tránsito por más de cuatro siglos de historia. A pesar de los problemas habitacionales que acumula la Ciudad en su conjunto y que en las más antiguas áreas centrales se traducen en sobreocupación y deterioro, La Habana Vieja conserva los altos valores patrimoniales que le han sido reconocidos, proporcionados principalmente por su arquitectura, sus ambientes urbanos y su vitalidad. El carácter integral que persigue el programa de rehabilitación del Centro Histórico y que logra materializarse gracias a su novedoso modelo de gestión, ha posibilitado la incorporación de diversos programas de atención a la vivienda. Con ellos se intenta enfrentar el reto que implica conservar el carácter residencial del conjunto recuperando, al mismo tiempo, la vivienda digna y confortable aspirada.

  17. Perigo sísmico, exposição e vulnerabilidade das villas vieja e nueva de trancas, tucumán, argentina

    OpenAIRE

    García, Alicia Irene

    2010-01-01

    As Villas Vieja e Nueva de Trancas, situadas na bacia tectônica de Tapia-Trancas, estão localizadas sobre a zona epicentral do terremoto que destruiu a antiga vila em 1826. O objetivo é estudar o risco sísmico que apresentam as cidades como a soma do perigo sísmico natural e a vulnerabilidade da população frente à ocorrência potencial de outro sismo destrutivo. Recorreu-se à análise bibliográfico-documental de estadísticas demográfico-econômicas, às técnicas de relevamento geográfico e anális...

  18. Variabilité spatio-temporelle de la qualité de l’eau potable des petits réseaux : facteurs explicatifs et développement d'outils de gestion

    OpenAIRE

    Scheili, Anna

    2015-01-01

    Cette thèse est consacrée à la détermination des facteurs responsables de la variabilité spatio-temporelle de la qualité de l’eau potable dans les petits réseaux de distribution et au développement d’outils de gestion destinés aux opérateurs. Afin de réaliser cette thèse, des études de cas ont été conduites dans 25 petites municipalités (population inférieure à 5 000 habitants) de deux provinces Canadiennes (Québec et Terre-Neuve et Labrador). Le premier chapitre présente un portrait spatio-t...

  19. Temporal relationships between the variations of diffuse gaseous emanations and the explosive activity of some active volcanoes of Costa-Rica, examples at the Arenal, Irazu and at the Rincon de la Vieja

    International Nuclear Information System (INIS)

    Baubron, J.C.; Allard, P.; Hammouya, G.; Soto, G.J.

    1996-01-01

    The surveillance of the temporal evolution of radon and helium concentrations in the carbon dioxide of crater fumaroles and gaseous emanations is performed since 1992 on the Irazu, Arenal, Poas and Rincon de la Vieja volcanoes in Costa-Rica. The 3 He/ 4 He ratio is used as an indicator of the deep origin of the volcanic gas while radon is an indicator of the CO 2 flux. Radon measurements performed on the Irazu show a continuous decay of radon concentration in the intra-crater fumaroles with an important increase of the gaseous flux since 1992. On the contrary, the external fumaroles on the NW flank were characterized by an important increase in radon concentration in 1994 with a stable flux. The radon surveillance performed in soils around the volcano has shown an intense increase of the diffuse gaseous flows probably linked to the micro-seismic activity of the volcano. Similar observations are reported for the Rincon de la Vieja volcano and correlated with its eruptive history and its phreatic and phreato-magmatic activity. Short paper. (J.S.)

  20. Amphibians and reptiles of C. E. Miller Ranch and the Sierra Vieja, Chihuahuan Desert, Texas, USA

    Directory of Open Access Journals (Sweden)

    Drew R. Davis

    2018-02-01

    Full Text Available We report the occurrence of 50 species of amphibians and reptiles recently collected on C. E. Miller Ranch and the Sierra Vieja in the Chihuahuan Desert of Texas, USA and describe their perceived distribution and abundance across various habitat associations of the region. Our recent surveys follow intense, historic sampling of amphibians and reptiles from this region in 1948. Of the 50 species detected in recent surveys, six were not collected in 1948 and an additional three species documented in 1948 have yet to be detected in a 14-year period of recent surveys. Combining data from both historic and recent surveys, a total of 53 species of amphibians and reptiles are known from the ranch (11 amphibians, 42 reptiles. Land stewardship and conservation practices have likely contributed to the persistence of the majority of these species through time. Additionally, we discuss the status of amphibians and reptiles not collected during recent surveys and comment on potential species that have not yet been detected.

  1. Amphibians and reptiles of C. E. Miller Ranch and the Sierra Vieja, Chihuahuan Desert, Texas, USA.

    Science.gov (United States)

    Davis, Drew R; LaDuc, Travis J

    2018-01-01

    We report the occurrence of 50 species of amphibians and reptiles recently collected on C. E. Miller Ranch and the Sierra Vieja in the Chihuahuan Desert of Texas, USA and describe their perceived distribution and abundance across various habitat associations of the region. Our recent surveys follow intense, historic sampling of amphibians and reptiles from this region in 1948. Of the 50 species detected in recent surveys, six were not collected in 1948 and an additional three species documented in 1948 have yet to be detected in a 14-year period of recent surveys. Combining data from both historic and recent surveys, a total of 53 species of amphibians and reptiles are known from the ranch (11 amphibians, 42 reptiles). Land stewardship and conservation practices have likely contributed to the persistence of the majority of these species through time. Additionally, we discuss the status of amphibians and reptiles not collected during recent surveys and comment on potential species that have not yet been detected.

  2. La imagen de los destinos turísticos cubanos. Un acercamiento desde La Habana Vieja

    Directory of Open Access Journals (Sweden)

    Dra. Maité Echarri Chávez

    2012-11-01

    Full Text Available El estudio y análisis de la imagen de los destinos turísticos, a partir de las expectativas del cliente y desde la perspectiva de las entidades comercializadoras de los mismos, constituye todo un reto teniendo en cuenta que la decisión de viajar está también condicionada por un cúmulo de información que puede no ser correspondida con la realidad que se constata en el lugar de destino y los medios de comunicación. El informe que se presenta es resultado de investigaciones cuyo objetivo es conocer y analizar esas expectativas para el caso cubano, así como el análisis de la imagen inducida desde la perspectiva de las entidades comercializadoras, tomando como referente La Habana Vieja, principal destino de ciudad de Cuba. Los resultados obtenidos permitieron reconocer los íconos culturales que identifican a la ciudad y el papel que los mismos juegan en los diferentes soportes comunicacionales, proporcionándoles a las entidades gestoras de la actividad turística el punto de vista adecuado para la futura toma de decisiones en el ámbito de la imagen.

  3. La microrregión como unidad espacial para el estudio de los problemas ambientales. Situación de los recursos suelo, forestal e hídrico en la microrregión Platanar-La Vieja, cuenca del río San Carlos

    Directory of Open Access Journals (Sweden)

    Francisco Rodríguez Barrientos

    2007-05-01

    Full Text Available A partir del ámbito territorial de las cuencas hidrográficas y de las divisiones políticoadministrativas, es posible determinar microrregiones con homogeneidad física,histórica, económica, social y cultural, en las cuales se puedan diseñar y ejecutar planes de manejo consensuados y participativos, algo indispensable para una política sostenible. En el trabajo se presentan elementos teóricos que ayudan a delimitar, precisar y operacionalizar elconcepto de microrregión, y se ofrecen las razones por las que se considera que las microcuencas de los ríos Platanar, Peje y La Vieja dentro de la cuenca del río San Carlos constituyen una microrregión. También se hace una caracterización de la microrregión Platanar-La Vieja, así como una descripción y análisis de los principales problemas que en ella afrontan los recursos suelo, forestal e hídrico.

  4. Sistema de información WEB para la administración del recurso hídrico superficial de la cuenca del río La Vieja, en Colombia

    Directory of Open Access Journals (Sweden)

    Jenny Carolina Ramírez-Leal

    2014-01-01

    Full Text Available Este trabajo presenta el desarrollo de una herramienta Web georreferenciada a través de la API de Google Maps, para administrar los recursos hídricos superficiales de la cuenca del río La Vieja en Colombia. Esto con el fin de crear un sistema de integración de información de fácil acceso, que ofrezca a las personas datos reales y actuales acerca del estado de los recursos hídricos en la cuenca del río La Vieja, para futuras consultas e investigaciones. Esta aplicación Web se llevó a cabo a través de la metodología ágil SCRUM y la metodología Mpiua, que integradas permitieron un desarrollo evolutivo e incremental, donde se involucró al usuario activamente al momento de incorporar aspectos de usabilidad y accesibilidad. Así mismo, se hizo uso de la arquitectura MVC para obtener un producto más escalable con abstracción de datos, código entendible, intercomunicación entre componentes y control de los recursos del servidor. Finalmente, se obtuvo la implementación de la herramienta Web HidroQuindío, que permite administrar la información de las estaciones de monitoreo, fuentes hídricas, entes territoriales, fuentes de captación y estructuras de conducción de apoyo a la toma de decisiones alrededor de la cuenca.

  5. La fabrique des normes temporelles du travail Manufacturing time standards for work La fábrica de las normas temporales de trabajo

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    Jens Thoemmes

    2012-12-01

    Full Text Available Cet article porte sur la provenance des normes temporelles du travail. Il indiquera d’une part que ces normes résultent des orientations globales d’une société, de la formation d’une conscience des temporalités, mais aussi de la mobilisation du mouvement syndical et ouvrier sans lesquels la réduction du temps de travail n’aurait pas vu le jour. D’autre part, l’origine des normes temporelles est liée aux dynamiques locales, notamment à celles des entreprises, aux relations sociales, mais aussi au type de production qui a contribué à définir les règles effectives des temps sociaux. Nous retracerons d’abord l’émergence d’un droit au temps libre pour les travailleurs qui reste tributaire des évolutions sociétales. Ensuite, nous montrerons les temps du sujet en situation indiquant la persistance de multiples tensions. Enfin, nous avancerons que le passage du temps décrété au temps négocié ouvre un espace de discussion qui, à certaines conditions, pourrait donner lieu à une nouvelle politique des temps davantage en lien avec les besoins du monde du travail.The article focuses on the origin of time standards for work. On one hand, it demonstrates that these reflect a society’s general orientations and evolving awareness of temporalities, as well as its mobilisation of union and worker movements without which it is impossible to reduce working hours. On the other hand, time standards also originate in local dynamics, notably where this involves companies, social relations but also production types that help to define the rules by which social time are actually governed. The paper starts by retracing the emergence of workers’ right to free time, which continues to depend on social developments. We then address how employees spend their time in work situations and discover a number of ongoing tensions. Lastly, we argue that the shift from decreed to negotiated time opens up a space for discussion that, under

  6. Pleistocene to holocene expansion of the black-belt cichlid in Central America, Vieja maculicauda (Teleostei: Cichlidae.

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    Caleb D McMahan

    Full Text Available The distributions of many Northern Hemisphere organisms have been influenced by fluctuations in sea level and climatic conditions during Pleistocene interglacial periods. These cycles are associated with range contraction and refugia for northern-distributed organisms as a response to glaciers. However, lower sea levels in the tropics and sub-tropics created available habitat for expansion of the ranges of freshwater organisms. The goal of this study was to use ecological niche modeling to test the hypothesis of north to south range expansion of Vieja maculicauda associated with Pleistocene glacial cycles. Understanding the biogeography of this widespread species may help us better understand the geology and interconnectivity of Central American freshwaters. Occurrence data for V. maculicauda was based on georeferencing of all museum records of specimens recovered from FishNet2. General patterns of phylogeographic structure were assessed with mtDNA. Present day niche models were generated and subsequently projected onto paleoclimatic maps of the region during the Last Interglacial, Last Glacial Maximum, and mid-Holocene. Phylogenetic analysis of mtDNA sequence data showed no phylogeographic structure throughout the range of this widespread species. Present day niche models were congruent with the observed distribution of V. maculicauda in Central America. Results showed a lack of suitable freshwater habitat in northern Central America and Mexico during the Last Interglacial, with greatest range expansion during the Last Glacial Maximum and mid-Holocene. Results support the hypothesis of a north to south range expansion of V. maculicauda associated with glacial cycles. The wide distribution of this species compared to other closely related cichlids indicates the latter did not respond to the degree of V. maculicauda in expansion of their distributions. Future work aimed at comparisons with other species and modeling of future climatic scenarios

  7. Analytical representation of time correlation functions and application to relaxation problems; Representation analytique des fonctions de correlation temporelle et application a des problemes de relaxation

    Energy Technology Data Exchange (ETDEWEB)

    Dupuis, M [Commissariat a l' Energie Atomique, 91 - Saclay (France). Centre d' Etudes Nucleaires, departement de physico-chimie, services des isotopes stables

    1971-07-01

    Two analytical representations of the Laplace transform of the time autocorrelation of a dynamical variable, namely the moment expansion and Mori's continued fraction expansion, are investigated from the point of view of structure and convergence properties, and the relation between them is established. The general theory is applied first to a dynamical model exactly solvable, the isotopic impurity in a linear chain of coupled harmonic oscillators, and then to two stochastic models recently introduced by Gordon for the rotational diffusion of molecules. In the latter case, the continued fraction expansion yields simple analytical expressions for the infrared absorption band shapes, showing that these models contain all the features of observed shapes in compressed gases, liquids and solutions. (author) [French] Deux representations analytiques de la transformee de Laplace de la fonction d'autocorrelation temporelle d'une variable dynamique, le developpement en moments et le developpement en fraction continue recemment introduit par Mori, sont etudiees du point de vue de leurs proprietes de structure et de convergence, en meme temps que la relation qui existe entre elles est etablie. La theorie generale est appliquee, d'une part, a un modele dynamique exactement soluble, celui d'une particule isotopique dans une chaine lineaire d'oscillateurs harmoniques couples, et, d'autre part, a deux modeles stochastiques recemment proposes par Gordon pour la diffusion rotationnelle des molecules. Dans ce dernier cas, la voie de la fraction continue fournit des expressions analytiques simples pour les formes de bande d'absorption infrarouge, montrant que ces modeles possedent les caracteristiques des formes observees dans les gaz comprimes, les liquides ou les solutions. (auteur)

  8. Conocimientos sobre implantes dentales en estomatólogos de los municipios de Centro Habana, Habana del Este y Habana Vieja

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    Eneida García López

    2010-06-01

    Full Text Available Se realizó una investigación descriptiva transversal, con el objetivo de evaluar el nivel de conocimiento sobre implantes dentales de los estomatólogos generales básico e integrales de los municipios, Habana del Este, Centro Habana y Habana Vieja. El Ministerio de Salud Pública tiene especial interés en la implementación y generalización de las técnicas de implantología dental a nivel de los municipios por lo que esta temática se convierte en tema de necesario dominio para los estomatólogos, pues necesitan orientar, tratar y remitir a sus pacientes. Para medir los conocimientos fue aplicada una encuesta que constaba de diez preguntas, y se utilizó los criterios de conocen y desconocen, para evaluar las respuestas según su calidad. El nivel de conocimientos se clasificó en adecuado cuando la encuesta tuvo un 70 % o más de respuestas con el criterio de conocen. El nivel de conocimientos fue no adecuado para los grupos de estudios y para los municipios.

  9. De nuevo sobre la Compassio Mariae: A propósito de las pinturas murales del sepulcro de don Alfonso Vidal en la catedral vieja de Salamanca

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    Gutiérrez Baños, Fernando

    2002-03-01

    Full Text Available En el verano de 1999 quedaron al descubierto tras su restauración las pinturas murales de estilo gótico lineal de los siglos XIII y XIV que se encontraron en noviembre de 1997 en el brazo meridional del crucero de la catedral vieja de Salamanca. Por su cantidad, por su calidad y por la riqueza de su iconografía estos descubrimientos consolidan la importancia de Salamanca en el panorama de la pintura de estilo gótico lineal. No pretendo abordar en este momento un estudio de conjunto acerca de estas pinturas, que reservo para otra ocasión, sino estudiar un aspecto iconográfico relevante de estos descubrimientos que entronca con el objeto de interés de la profesora Domínguez Rodríguez en un artículo publicado no hace mucho tiempo en las páginas de esta revista.…

  10. RESENHA: FREDEL, Karla Maria. Arqueologia de Gênero nas cidades de Pelotas - RS - Brasil e Habana Vieja - Habana - Cuba / século XIX. Erechim, RS: Habilis Press, 2015, 214 p.

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    Juan Manuel Cano Sanchiz

    2016-11-01

    Full Text Available Arqueologia de Gênero nas cidades de Pelotas - RS - Brasil e Habana Vieja - Habana - Cuba / século XIX es la publicación de la Tesis Doctoral homónima de Karla Ma Fredel, defendida en el Instituto de Filosofia e Ciências Humanas de la Universidade Estadual de Campinas (UNICAMP, en octubre de 2012. La tesis se desarrolló bajo la orientación del profesor Dr. Pedro Paulo A. Funari (Laboratório de Arqueologia Pública, NEPAM/UNICAMP y la co-orientación de los profesores Dra. Lourdes Domínguez (Oficina del Historiador de La Habana; Academia de la Historia de Cuba y Dr. Lúcio Menezes Ferreira (Laboratório Multidisciplinar de Pesquisa Arqueológica, UFPel. Todos ellos han contribuido a esta nueva obra con sendos prólogo (Domínguez, prefacio (Funari y presentación (Ferreira.

  11. Nuevas y viejas ruralidades

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    Monferrer, Aina

    2015-12-01

    Full Text Available It is at least curious the fact that nowadays, in this urban society, Spanish documentaries that are focused on rurality are flourishing. This paper is an attempt to better understand this phenomenon that might have an anchoring point in the so called Nova Escola de Barcelona. It also seems to be a social but metaphysic new glance to the countryside highly related with the search of the personal identity and with the anxiety of the social trauma. Having done a general overview of the presence of rural features in Spanish fictional and non-fictional cinema, we have highlighted three films due to their influence in the present renaissance of this feature: Las Hurdes. Tierra sin pan (1933, El espíritu de la colmena (1973 and El cielo gira (2005. Then, we focus on some of the most significant documentaries related to this new tendency of subjective and rather symbolic gaze over the Spanish countryside.

  12. 1733-IJBCS-Article-Koura Kourouma++

    African Journals Online (AJOL)

    Pr GATSING

    identifiées sur la base de leurs relations spatio-temporelles en cinq phytocoenoses : phytocoenoses à ..... Synusie annuelle à Pennisetum pedicellatum et Hyparrhenia involucrata. 22 .... biglobosa traduisent l'impact de la gestion des parcs à.

  13. Descripción ultraestructural de Euglena pailasensis (Euglenozoa del Volcán Rincón de la Vieja, Guanacaste, Costa Rica

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    Ethel Sánchez

    2004-03-01

    Full Text Available Los euglenoides son eucariotas unicelulares flagelados que habitan ambientes acuáticos y suelos de una gran diversidad de ecosistemas. Este trabajo presenta la descripción morfológica ultraestructural del euglenoide E. pailasensis aislado de las fuentes de lodo caliente de las "pailas de barro" en el Volcán Rincón de la Vieja, Guanacaste, Costa Rica. La temperatura de estos sitios puede variar entre 38 y 98° C y puede tener un pH entre 1 y 4. El estudio se realizó utilizando microscopia electrónica de barrido y transmisión. El euglenoide está constituido por una célula típica que puede medir de 30 a 45 µm de largo y 8-10 µm de ancho, con membrana externa, película, cloroplastos, mitocondrias, núcleo, pigmentos granulares y demás organelas citoplasmáticas de un eucarionte. Esta delimitado por una membrana continua y por una película compuesta de aproximadamente 40 - 90 mionemas que miden entre 0.8 y 1.0 µm de ancho, dispuestas helicoidalmente sobre la célula. Se observó 5 cloroplastos elongados por célula, de 1-2 µm de diámetro y 6-12 µm de largo, delimitados por tres membranas y localizados en la periferia celular. Este posee glóbulos osmiofílicos y un pirenoide penetrado por pocos tilacoides. El material nutritivo se almacena en gránulos de paramilón y las mitocondrias presentan las crestas en disposición radial hacia el interior del lumen. La zona de la ámpula se observó sin flagelo y se notó una red de fibrillas que envuelve el espécimen. Las características ultraestructurales observadas en este estudio, no permiten explicar la capacidad de E. pailasensis para habitar en el ambiente volcánico extremo de las Pailas de Barro CalienteThe euglenoids are unicellular eukaryotic flagellates living in a diversity of soils and aquatic environments and ecosystems. This study describes the ultrastructure of an euglenoid isolated from the surface of a boiling mud pool with temperatures ranging from 38 to 98°C and p

  14. Figures temporelles.

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    Philippe Lacour

    2004-06-01

    Full Text Available « Dis-moi comment tu traites le présent, et je te dirai quelle philosophie tu es ». Charles Péguy 1 Qu’est-ce qu’un « régime d’historicité » ? Le concept fondamental que ce livre aimerait mettre en valeur est celui de régime d’historicité . François Hartog insiste sur la prétention modeste et la portée limitée de cette notion, qui n’est ni une chronosophie, ni un instrument de prédiction, mais plus simplement un « outil », ou encore un modèle destiné à ...

  15. Educación para el Ocio: Ha llegado la hora de un nuevo objetivo para una vieja idea.

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    Susan Hutchinson

    2012-01-01

    Full Text Available La Educación para el Ocio nos sitúa ante una vieja idea, que está siendo examinada con renovado vigor en Canadá. Profesionales e investigadores de diversas disciplinas (por ejemplo, en el ámbito de Salud, la Justicia, la Educación o la Recreación reconocen, cada vez más, que son muchas las personas que pueden beneficiarse del ocio y de las oportunidades de recreación en sus comunidades, aún cuando son bastantes las no pueden hacerlo porque carecen de alfabetización en ocio. Esto es, de los conocimientos, habilidades y confianza que se necesitan para darle un significado personal, que incida positivamente en su bienestar y calidad de vida. La Educación para el Ocio es un medio clave para mejorar la alfabetización en ocio. El texto presenta un modelo de educación para el ocio desarrollado por la Dra. Brenda Robertson, argumentando cómo y por qué la Educación para el Ocio es necesaria para abordar la salud mental y el bienestar de las personas que sufren marginación en sus comunidades. Complementariamente se presentan algunas recomendaciones para avanzar esta Educación, como un componente fundamental de la agenda nacional para la recreación en Canadá.--------------------------------------------------------------------Leisure education is an old idea that is being examined with renewed vigour in Canada. Practitioners and researchers from various disciplines (e.g., health, justice, education, recreation are recognising anew that many people who could benefit from leisure or recreation opportunities in their communities are unable to do so because they lack leisure literacy. Leisure literacy refers to the knowledge, skills and confidence to engage in personally meaningful, health-enhancing leisure. Leisure education is a key means to enhance leisure literacy. The paper presents a model of leisure education developed by Dr. Brenda Robertson and argues for how and why leisure education is needed to address the mental health and well

  16. Macrophyte Communities of Andean Rivers: Composition and Relation with Environmental Factors

    OpenAIRE

    Alida Marcela Gómez Rodríguez; Luz Teresa Valderrama Valderrama; Carlos A. Rivera-Rondón

    2017-01-01

    Small streams of tropical Andes have been poorly studied. Therefore, there is little information about the structure, dynamics and function of their macrophyte communities. In this research, aquatic plant communities of 18 Andean streams of La Vieja (Quindío) and Otún (Risaralda) river basins were studied; those are some of the basins most affected by anthropic activities in the country. Streams were selected according to their association with the main land’s uses of the region in both basin...

  17. ESTRATEGIAS PARA EL ESTUDIO DE SITIOS DEL PERIODO COLONIAL EN EL NORDESTE ARGENTINO: FUERTE SANCTI SPIRITUS (1527-1529 Y SANTA FE LA VIEJA (1573-1660 / Strategies for the study of the colonial period sites in northeastern Argentina: Sancti Spiritus Fort

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    Gabriel Cocco

    2014-12-01

    Full Text Available Normal 0 21 false false false ES-AR X-NONE X-NONE MicrosoftInternetExplorer4 coloniales de la región del Nordeste Argentino. Se toman dos casos de estudio, el fuerte Sancti Spiritus (1527-1529 y Santa Fe la Vieja (1573-1660; ubicados temporalmente en el inicio de la colonización española en Sudamérica y espacialmente sobre la llanura aluvial del Paraná. Los sitios representan dos etapas del colonialismo español y se vinculan a través de su historia, de la materialidad de sus construcciones y de los artefactos, de la[1] procedencia de quienes los ocuparon, del contexto cultural y natural donde fueron emplazados. Se hace una síntesis de la trayectoria seguida en la investigación de ambos asentamientos y se las compara con el fin de realizar algunas consideraciones acerca de las estrategias para el estudio de sitios históricos en esta región.   Palabras clave: asentamientos españoles del siglo XVI; cuenca del Paraná; trayectorias de investigación; métodos de excavación.   Abstract This paper deals with the strategies of archaeological research carried out in colonial sites in the region of the Northeastern Argentina. We considered two cases of study, the Sancti Spiritus Fort (1527-1529 and Santa Fe La Vieja (1573-1660; both enclaves are located temporarily in the beginning of the Spanish colonization in South America and spatially on the alluvial plain of the Paraná River. These sites represent two stages of Spanish colonialism and they are linked through its history, the materiality of their constructions, archaeological artifacts, and the origin of those who occupied these settlements; even we consider their cultural and natural contexts. This work is an overview of the trajectory followed in the study of both settlements and we compare them in order to take into account some considerations about the analytical and methodological strategies for the study of historical sites in this region.   Keywords: Spanish settlement of 16

  18. De la vieja a la nueva extrema derecha (pasando por la fascinación por el fascismo

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    José Luis Rodríguez Jiménez

    2009-12-01

    Full Text Available Análisis de la evolución de las corrientes de extrema derecha, de su discurso, programa y estrategia, y de su relación con la derecha conservadora y el fascismo. El tradicionalismo fue una extrema derecha de resistencia en el XIX, incapaz de frenar el avance del liberalismo. Esta situación, la progresión del movimiento obrero y la crisis cultural coincidiendo con el cambio de siglo alentaron la renovación de la extrema derecha. El siglo XX fue testigo de la aparición de tres corrientes de pensamiento que renovaron su programa (derecha autoritaria, derecha radical y fascismo y disfrutaron de parcelas de poder político en la convulsa Europa de 1918-1945. La irrupción del fascismo y el éxito obtenido en un terreno en el que había fracasado la derecha no democrática, el de neutralizar a la izquierda obrera y hacerse con el poder para establecer una dictadura permanente, sedujo a amplios sectores de la derecha. El resultado fue una alianza con los fascismos responsables de la guerra mundial y el genocidio de millones de personas. Esa herencia y el mundo bipolar de la Guerra Fría representaron un lastre para su desarrollo. Se incide en la aparición de una nueva extrema derecha a mediados de los ochenta, en sus diferencias y semejanzas respecto a la vieja extrema derecha y el fascismo. Asimismo, en los factores que han podido incidir en la reaparición y consolidación de este tipo de organizaciones.________________ABSTRACT:Analysis of the evolution of the extreme right wing' thinking trends, its speech, program and strategy, and its relation with the conservative right faction and the fascism. The traditionalism was an extreme right of resistance during the XIX century. Unable to stop the advance of liberalism. This situation, the advancing of the labour movement and the cultural crisis agreeing with the change of the century encouraged the renovation of the extreme right movement. The  XX Century was witness of the appearance of three

  19. Space-time dependent impulse response of a subcritical cylindrical reactor; Reponse impulsionnelle spatio-temporelle d'un reacteur cylindrique en regime sous-critique

    Energy Technology Data Exchange (ETDEWEB)

    Cazemajou, J [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1965-07-01

    In this paper, a new formulation of the spatial dependent impulse response of a subcritical reactor in a cylindrical geometry is proposed. An expression of the transfer function between a point source at the center of coordinates and the flux at a given point (r,z) is obtained by solving: by means of Laplace transform, the one group diffusion equation. In this transfer function, variables r and p (p being the Laplace variable) remain linked within a modified Bessel function. Taking the inverse Laplace transform is done by two different ways: - using the Mellin-Fourier method which separates variables r and t. This method makes it possible to establish that there is identity between the classical formulation and the new one. - using an inverse Laplace transform which keeps variables r and t linked. This method requires to approximate the inverse Laplace transform of the end factor. It is then possible to replace the radial harmonics modes series of the classical expression by a single function. This new formulation seems to be of particular interest when dealing with reactors of large size and lifetime. It is also interesting each time the harmonics play an important role. (author) [French] Dans le present rapport, on propose une nouvelle formulation de la reponse impulsionnelle spatio-temporelle d'un reacteur sous-critique, en geometrie cylindrique. Une expression de la fonction de transfert entre une source ponctuelle placee au centre des coordonnees et le flux au point courant (r,z) est obtenue en resolvant, par transformation de Laplace, l'equation de la diffusion a un seul groupe d'energie. Dans cette fonction de transfert, les variables r et p (variable de Laplace) demeurent groupees dans une fonction de Bessel modifiee. Le retour a l'original est effectue de deux manieres: - la methode de Mellin-Fourier qui separe les variables r et t, permet d'etablir l'identite entre la nouvelle formulation et la formulation classique. - un original conservant les variables

  20. Campo, campesinos y cuestión rural en Castilla la Vieja y en el Reino de León durante la Edad Moderna. Estado de la cuestión, claves y valoraciones de conjunto

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    Laureano M. RUBIO PÉREZ

    2009-10-01

    Full Text Available RESUMEN: Sobre la base del amplio marco espacial adscrito a los territorios de Castilla la Vieja y del Reino de León y de los condicionantes estructurales que lo defi nen e identifi can, se plantea la problemática del mundo rural y de la sociedad campesina durante la Edad Moderna a partir de los conocimientos aportados hasta el momento por la historiografía rural. En torno a esta problemática y desde la valoración de los diferentes modelos agrarios, que exigen no pocas revisiones y cuestionamientos a la supuesta homogeneidad territorial y social, se plantean algunas de las principales cuestiones que afectan al desarrollo de la sociedad campesina, especialmente aquellos que tienen que ver tanto con el sistema productivo y los regímenes agrarios, como con la estructura social y las relaciones de producción a través del marco jurídico del régimen señorial, sin olvidar la impronta de los condicionantes político-administrativos que de alguna forma justifi can el fortalecimiento o debilidad de la comunidad rural.ABSTRACT: Over the base of the broad spatial framework attached to the territories of old Castile and the Kingdom of Leon and over the structural factors that defi ne and identify it, it’s raise the problematic of the rural world and peasant society during the Early Modern Period from the knowledges gave until now by the rural bibliographers. Related to this problem, and from different points of view, lots of questions arise involving the peasant society development, specially in the productive and agricultural systems, social structure and production facts in the lordship system, without forgetting the political conditioners which justifying the strengthening or weakness of the rural community.

  1. Caractérisation spatio-temporelle du régime pluviométrique du haut bassin du fleuve Sénégal dans un contexte de variabilité climatique

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    Alain Dezetter

    2011-07-01

    Full Text Available Les écoulements et par conséquent les ressources en eau constituent la réponse des bassins versants aux impulsions pluviométriques. En Afrique de l'Ouest et Centrale, on assiste depuis les années 1970 à une sécheresse sans précédent, ainsi qu'à une grande variabilité spatiale et temporelle des pluies, caractéristique du domaine tropical. L'objectif de ce travail est de définir la variabilité spatio-temporelle des précipitations à l'échelle du haut-bassin du fleuve Sénégal à partir des données de dix stations de référence. Le choix des stations obéit à des critères de qualité des données (lacunes peu nombreuses et de proximité avec le bassin versant. Dans un premier temps, des tests statistiques d'homogénéité ont été appliqués aux séries de pluies annuelles de l'origine des stations à 2005. Les séries analysées présentent toutes des ruptures. Sur les dix stations étudiées, huit présentent une rupture comprise entre 1960 et 1970 et les déficits ultérieurs varient entre 12 et 24 %. À l'échelle mensuelle, après reconstitution des données manquantes, il apparaît que les précipitations ont diminué significativement pour presque tous les mois entre les deux périodes. À l'échelle journalière, l'analyse des fractions pluviométriques journalières met en évidence une tendance à la diminution du cumul annuel moyen des pluies supérieures à 40 mm (qui sont considérées comme les grosses pluies à partir des années de rupture. Nous avons ensuite caractérisé la variabilité spatiale des précipitations annuelles moyennes sur 30 et 10 ans, puis les écarts par rapport à la décennie de référence 1961-1970. Il apparaît ainsi que le sud du bassin présente les excédents les plus forts durant les périodes excédentaires, mais aussi les déficits les plus élevés en périodes déficitaires.Runoff and consequently water resources constitute the response of watersheds to pluviometric impulses

  2. La aplicación de indicadores en la dimensión de análisis control de plagas y enfermedades para evaluar la sostenibilidad de las fincas agropecuarias en la microrregión Platanar-La Vieja, cuenca del río San Carlos, Costa Rica

    Directory of Open Access Journals (Sweden)

    Francisco Rodríguez Barrientos

    2007-11-01

    Full Text Available Partiendo del criterio de expertos, se diseñó un conjunto de indicadores en tres dimensiones de análisis (forestal, suelos y control de plagas y enfermedades al que se denominó Índice Aproximado de Sostenibilidad para las Fincas de una Microrregión (IASOFIMICRO. El índice permitió evaluar el nivel de aporte de las fincas (alto, medio y bajo a la sostenibilidad y se aplicó a la ganadería de leche, la caña de azúcar y la horticultura, que son las actividades agropecuarias más relevantes de la microrregión Platanar-La Vieja, cuenca del río San Carlos, Costa Rica. En el artículo se presentan los resultados parciales de una investigación de campo, específicamente para la dimensión de análisis suelo, comparando el desempeño de las tres actividades estudiadas según su aporte a la sostenibilidad.

  3. Hábitos o comportamientos inadecuados y malos resultados académicos en estudiantes de secundaria

    OpenAIRE

    Aguilar Valdés, Juan; Cumbá Abreu, Caridad; Cortés Alfaro, Alba; Collado, Ana María; García Roche, René G; Pérez Sosa, Dania

    2010-01-01

    Determinados hábitos y comportamientos son más frecuentes en educandos con malos resultados académicos, por ser sus causas o consecuencias. El objetivo del actual trabajo fue identificar la relación entre los hábitos o comportamientos de vida inadecuados, con los malos resultados académicos de los alumnos de una secundaria básica del municipio Habana Vieja. Se realizó un estudio de tipo transversal, en los 1 129 alumnos de una Escuela Secundaria Básica del Municipio Habana Vieja en Ciudad de ...

  4. Nuevas y viejas quinolonas

    Directory of Open Access Journals (Sweden)

    Ciro Maguiña Vargas

    2002-10-01

    Full Text Available Quinolones are a family of antibiotics of great importance in the management of several community and nosocomial diseases. Therefore, it is important to know the qualities of the old and new quinolones. Quinolones, as anti-infectious agents, are effective and safe and few times occurs adverse events. After 1962, when the first quinolon, nalidix acid, appeared, new generations of quinolones (fourth generation have appeared in the market. However, we should know strictly its indications, most infectious diseases are the agents of elections, but in another cases, are drugs of second line. The objective of this review is to know better all quinolones in order to avoid the appearance of resistance due to its mal practice. In this review, we present pharmakocinetic aspects, currently indications of the fluorquinolones, the importance of new quinolones, the mechanisms of resistance, its contraindications and adverse events. (Rev Med Hered 2002; 13:153-160.

  5. Physical and biogeochemical forcing of oxygen and nitrate changes during El Niño/El Viejo and La Niña/La Vieja upper-ocean phases in the tropical eastern South Pacific along 86° W

    Directory of Open Access Journals (Sweden)

    P. J. Llanillo

    2013-10-01

    Full Text Available Temporal changes in the water mass distribution and biogeochemical signals in the tropical eastern South Pacific are investigated with the help of an extended optimum multi-parameter (OMP analysis, a technique for inverse modeling of mixing and biogeochemical processes through a multidimensional least-square fit. Two ship occupations of a meridional section along 85°50' W from 14° S to 1° N are analysed during relatively warm (El Niño/El Viejo, March 1993 and cold (La Niña/La Vieja, February 2009 upper-ocean phases. The largest El Niño–Southern Oscillation (ENSO impact was found in the water properties and water mass distribution in the upper 200 m north of 10° S. ENSO promotes the vertical motion of the oxygen minimum zone (OMZ associated with the hypoxic equatorial subsurface water (ESSW. During a cold phase the core of the ESSW is found at shallower layers, replacing shallow (top 200 m subtropical surface water (STW. The heave of isopycnals due to ENSO partially explains the intrusion of oxygen-rich and nutrient-poor antarctic intermediate water (AAIW into the depth range of 150–500 m. The other cause of the AAIW increase at shallower depths is that this water mass flowed along shallower isopycnals in 2009. The shift in the vertical location of AAIW reaching the OMZ induces changes in the amount of oxygen advected and respired inside the OMZ: the larger the oxygen supply, the greater the respiration and the lower the nitrate loss through denitrification. Variations in the intensity of the zonal currents in the equatorial current system, which ventilates the OMZ from the west, are used to explain the patchy latitudinal changes of seawater properties observed along the repeated section. Significant changes reach down to 800 m, suggesting that decadal variability (Pacific decadal oscillation is also a potential driver in the observed variability.

  6. Retardo en el neurodesarrollo en niños de la Habana Vieja Retardation in the neurodevelopment of children in Old Havana

    Directory of Open Access Journals (Sweden)

    Roberto Moreno Mora

    2008-09-01

    Full Text Available OBJETIVO: evaluar un programa dirigido a los niños con retardo del neurodesarrollo. MÉTODOS: estudio retrospectivo analítico de casos y controles, de la consulta de neurodesarrollo de La Habana Vieja. El universo y muestra estuvo constituido por 170 pacientes con retardo del neurodesarrollo entre los años 2000 y 2006. Se seleccionó aleatoriamente un grupo estudio constituido por 52 niños bajo peso con retraso del desarrollo sicomotor, y un grupo control formado por 118 niños normopesos con retraso del desarrollo sicomotor. Fueron evaluados por un equipo interdisciplinario, y se les realizó seguimiento trimestral, aplicándoles estimulación integral, fisiátrica, sicomotora, logopédica y en el hogar. Se aplicaron programas de estimulación como Isidoro Candell, Bobath y Vojta. RESULTADOS: el grupo estudio presentó el menor por ciento de nivel escolar medio superior (42,31 % y el mayor por ciento de lactancia materna no exclusiva (20,08 %. Además, presentó hipertonía (10,91 %, trastornos de conducta (10,91 % y epilepsia-Down (3,64 %. La evaluación motora presentó en el grupo estudio en la categoría normal, un ascenso a un 59 %. El grupo estudio presentó el mayor por ciento de evolución agravada (12 % y el grupo control presentó un mayor por ciento de evolución favorable (39 %. CONCLUSIONES: la esfera motora presentó una respuesta más positiva que la esfera mental, y la evolución agravada se relacionó con los niños bajo peso con retardo del desarrollo sicomotor, aunque en general la evolución de los niños estimulados en nuestro programa presentó tendencia a la evolución favorable y superada.OBJECTIVE: to evaluate a program directed to children with neurodevelopment retardation. METHODS: a retrospective analytical case-control study was conducted at the neurodevelopment department of Old Havana. The universe and the sample were composed of 170 patients with neurodevelopment retardation from 2000 to 2006. A study group

  7. Restructuration de l’appareil productif local, articulations spatio-temporelles, identité et capacité collective d’agir Restructuring the local system of production, articulating time-and-space, identities and the collective ability to act

    Directory of Open Access Journals (Sweden)

    Jacques Garnier

    2009-07-01

    Full Text Available La restructuration industrielle du Bassin minier de Provence est une transition complexe au cours de laquelle, pendant 25 ans, ont coexisté et interagi deux systèmes spatio-temporels respectivement associés à l’ancien appareil productif minier en déclin et au nouvel appareil productif de micro-électronique en expansion. Depuis longtemps soumise et stabilisée dans la continuité, la durée, les rythmes et les isochronies du temps industriel dominant associé à l’appareil minier, la société locale tend à se segmenter et se désintégrer désormais selon des discordances temporelles et spatiales nombreuses fortement associées aux stratégies et aux formes organisationnelles de l’appareil productif de micro-électronique. En analysant quelques-uns des effets de la coexistence et de la tension entre les deux systèmes spatio-temporels, l’article débouche sur une autre tension : celle qui s’instaure entre l’efficacité économique collective, l’identité sociale locale et la capacité collective à agir localement.The industrial restructuring of the Provence mining country (France represents a complex transition during which two time-and-space systems have coexisted and interacted for 25 years, the first being associated with the declining mining industry, the second with the new and expanding micro-electronics industry. For many years, dominated by the mine, local society remained stable and integrated according to the old industry’s continuity, rhythm and time, whereas now, it is on its way to fragmentation, destabilization and disintegration as discontinuity, short duration, erratic processes and the variety of time-and-space associated with micro-electronics take over. By analyzing some of the effects of the coexistence and tensions between the two systems, we discover in fact another source of tension, the one that exists between a local economic efficiency, a local social identity and a local collective ability to

  8. LES RELATIONS ENTRE LE MILIEU NATUREL ET LE MILIEU ANTHROPIQUE DANS LE GEOSYSTEME DE LA DEPRESSION OZANA-TOPOLIŢA

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    Cristina LETOS

    2010-03-01

    Full Text Available Bien que le thème de l’article se réfère seulement à un géosystème particulier, lamanière d’investigation exige un élargissement du domaine de la recherche en ce quiconcerne la dimension temporelle et aussi la dimension fonctionnelle et socioéconomique.On a essayé un étude qui concerne la connexion de l’environnementà la composante anthropique du géosystème de la Dépression Ozana-Topoliţa à l’aide des indicateurs qui seront bonites dans une matrice pour identifier des différents niveaux de pression anthropique du géosystème en question. 

  9. 2276-IJBCS-Article-Djibril Badiane

    African Journals Online (AJOL)

    hp

    aspects de la problématique de gestion des insectes ravageurs du cotonnier sont passés en revue. © 2015 International Formulae ... des décennies un contrôle satisfaisant de l'ensemble des ... influencer la dynamique spatio-temporelle de.

  10. 199 Étude de la qualité des eaux d'une retenue située sous climat ...

    African Journals Online (AJOL)

    Afrique Sciences

    Mots-clés : barrage Hassan II, Maroc, climat, eau, qualité, eutrophisation. Abstract ... However, the feasibility and management of these structures are ..... Figure 5 : Evolution spatio-temporelle de la température au barrage Hassan II. De S à P6 ...

  11. Aperçu de la recherche sur le temps et les temporalités en psychologie sociale Research on time and temporalities in social psychology : limits and advances

    Directory of Open Access Journals (Sweden)

    Jean-Marc Ramos

    2009-06-01

    Full Text Available Il n’y a pas de recherche programmatique sur les questions temporelles en psychologie sociale. C’est la conclusion que l’on peut tirer de deux bilans convergents sur la production scientifique contemporaine. Nous montrons dans cet article qu’il existe néanmoins des foyers de recherche, traditionnellement sur les perspectives temporelles et plus récemment sur la mémoire sociale ; ce qui doit nous rassurer sur l’avenir de la recherche temporaliste dans cette discipline.There is no programmatic research on temporal matters  in social psychology. This is the conclusion we can draw from two converging assessments on contemporary scientific production. We show in this article that hotbeds of research nonetheless exist, traditionally focused on time perspective, and more recently on social memory; which must reassure us about the future of temporalistic research in this discipline.

  12. Remodelage des temps et des espaces de travail chez les travailleurs indépendants de l’informatique : l’affrontement des effets de marchés et des préférences personnelles Software freelancers remodel their working time and space: the clash between market effects and personal preference

    Directory of Open Access Journals (Sweden)

    Diane-Gabrielle Tremblay

    2009-11-01

    Full Text Available Cette recherche s’intéresse à la perméabilité spatiale et temporelle des frontières entre le travail et le hors travail chez les travailleurs indépendants de l’informatique. Cette perméabilité participe d’une certaine recomposition des lieux et des temps de travail, permise par les TIC, mais sans doute en partie impulsée par la pression du marché, ou la concurrence entre travailleurs, dans ce secteur de travail. Les travailleurs indépendants de l’informatique constituent un groupe de travailleurs qui combine une utilisation intense des technologies et une relative autonomie dans le travail. Après un état des lieux de la perméabilité spatiale et temporelle du travail chez ces travailleurs, nous pouvons distinguer deux groupes, un premier groupe pour lequel les frontières sont très perméables (comportement intégrateur et un second pour lequel les frontières sont imperméables (comportement séparateur. Nous constatons aussi que les divers clients de ces contractuels ont une forte incidence sur l’organisation de leur temps de travail, mais aussi de leur espace de travail. Il semble donc bien y avoir un effet de marché, tout au moins en partie, même si les travailleurs autonomes de l’informatique ont tenté de se donner une certaine maîtrise temporelle.Our research inquired into the spatial and temporal permeability of borders separating work and off-work among independent software employees. Such permeability is part of the remodeling process of working time and place that ICT allows for, though doubtless under the influence of the market or of competition between workers in that sector. Freelance software workers are a group that combines an intensive use of technology with relative autonomy. After reporting on the state of the art on the subject of porous spatial and temporal borders between work and off-work among them, two groups will be distinguished: one for whom frontiers are very permeable (integrating

  13. Méthodologie d’analyse des signaux et caractérisation hydrogéologique : application aux chroniques de données obtenues aux laboratoires souterrains du Mont Terri, Tournemire et Meuse/Haute-Marne

    OpenAIRE

    Fatmi, Hassane

    2009-01-01

    Ce rapport présente des méthodes de prétraitement, d'analyse statistique et d'interprétation de chroniques hydrogéologiques de massifs peu perméables (argilites) dans le cadre d'études sur le stockage profond de déchets radioactifs. Les séries temporelles analysées sont la pression interstitielle et la pression atmosphérique, en relation avec différents phénomènes (marées terrestres, effet barométrique, évolution de l'excavation des galeries). Les pré-traitements permetten...

  14. TempoWordNet : une ressource lexicale pour l'extraction d'information temporelle

    OpenAIRE

    Hasanuzzaman , Mohammed

    2016-01-01

    The ability to capture the time information conveyed in natural language, where that information is expressed either explicitly, or implicitly, or connotative, is essential to many natural language processing applications such as information retrieval, question answering, automatic summarization, targeted marketing, loan repayment forecasting, and understanding economic patterns. Associating word senses with temporal orientation to grasp the temporal information in language is relatively stra...

  15. Lactancia materna y su relación con el exceso de peso corporal en adolescentes de secundaria básica Breastfeeding and its relation to corporal excess weight in secondary school adolescents

    Directory of Open Access Journals (Sweden)

    Eumelia Ondina Terrero

    2010-03-01

    Full Text Available Introducción: el sobrepeso y la obesidad, factores de riesgo aterosclerótico, se incrementan de manera creciente en todas las edades. Las trasgresiones de la lactancia materna han sido relacionadas frecuentemente con el exceso de peso. Objetivos: contribuir al esclarecimiento de la relación entre la duración de la lactancia materna y el exceso de peso (sobrepeso y obesidad en adolescentes. Métodos: estudio observacional de casos y controles en 344 adolescentes que estudian en la Secundaria Básica Urbana "Benito Juárez" del área de salud del policlínico "Antonio Guiteras Holmes" en La Habana Vieja, realizado entre enero de 2005 y enero de 2006. A todos los estudiantes se les realizaron mediciones antropométricas de peso corporal, talla y circunferencia de cintura. El grupo control se conformó con los estudiantes normopeso. La asociación estadística entre la duración de la lactancia materna y el exceso de peso corporal se determinó mediante el cálculo de odds ratio con un nivel de significación de pIntroduction: the excess weight and obesity are atherosclerosis risks increasing in all ages. Transgressions of breastfeeding have been related frequently to excess weight. Objectives: to contribute to clearing up of relation between the length of breastfeeding and the excessive body weight (excess weight and obesity in adolescents. Methods: this is an observational study of cases and controls conducted in 344 adolescents studying in "Benito Juárez" Urban Secondary School (UBS from health area of "Antonio Guiteras Holmes" Polyclinic in Habana Vieja (January, 2005 to January, 2006. In all students we made anthropometry measurements of body weight, height and waist circumference. Control group included students with normal weight. Statistical association between breastfeeding and corporal excess weight was determined by odds ratio calculus con a 95 % accuracy. Results: it was verified the 14 % of excess weight and the 4% of obesity. The

  16. Browse Title Index

    African Journals Online (AJOL)

    Issue, Title. Vol 23, No 2 (2011), Dynamique foliaire et croissance du maïs: Application du modèle «STICS» en conditions tropicales en RD-Congo, Abstract PDF. MM Lufuluabo, RV Kizungu, KK Nkongolo. Vol 18, No 1 (2006), Dynamique spatio-temporelle des populations d\\'Altises Podagrica spp. (Coleoptera ...

  17. Nuances in the representation of time in the works of Miguel Delibes

    Directory of Open Access Journals (Sweden)

    Maria-Teresa De Pieri

    2012-12-01

    Full Text Available This work analyzes the representation of time and its nuances in the novels and newspaper articles of Miguel Delibes. The category of time is related to an idea of existence that follows the cycles of nature; it is a natural and mythical time, both a personal and collective one, whose fleeting nature can be halted only by the power of words. In his works Delibes tries to preserve a vocabulary on the verge of extinction in today’s day and age. The ironic tone in which he reflects on the relentless fl owing of existence – such as in La hoja roja, Cartas de amor de un sexagenario voluptuoso and other articles – is juxtaposed to a more serious and careful tone adopted for instance, in Viejas historias de Castilla la Vieja (1964. Moreover, the theme of death is linked to the passing of time. In Señora de rojo sobre fondo gris Delibes analyzes it as a reflection of his tough personal experience, while in Cinco horas con Mario the author takes advantage of the absence of the male protagonist, who has just died, in order to reflect on the abyss separating the present from the past.

  18. ARTEFACTOS DE USO DIARIO REPRESENTADOS EN LA COLECCIÓN CERÁMICA DEL ARROYO LEYES: SU EMPLEO EN LA DETERMINACIÓN DE CRONOLOGÍA / Daily use artifacts represented in the Arroyo de Leyes pottery collection: their use in the determination of chronology

    Directory of Open Access Journals (Sweden)

    Carlos Natalio Ceruti

    2014-12-01

    Full Text Available Se analizan artefactos de uso diario (implementos para mate, una alcancía, un vaso de cuerno y una “canasta” para el juego del pato representados en la colección cerámica del sitio Los Zapallos, sobre el Arroyo Leyes (departamento Garay, provincia de Santa Fe, Argentina. Se describen los elementos, localizados en un contexto considerado prima facie como obra de individuos esclavizados pertenecientes a vecinos de Santa Fe la Vieja (siglo XVII; pero que también puede contener materiales correspondientes a las culturas indígenas contemporáneas o anteriores a la conquista; a los siglos XVIII-XIX, y “falsificaciones” de comienzos del siglo XX. Se intenta ubicar cada uno de ellos en la escala temporal a partir del análisis de pasta y decoración de la pieza, y de la consistencia argumental derivada de la documentación escrita.   Palabras clave: Arroyo Leyes, arqueología de la esclavitud, Santa Fe la Vieja, cronología Daily use artifacts represented in the Arroyo de Leyes pottery collection: their use in the determination of chronology Abstract The presence of daily-use artifacts (implements for mate infusion, a money box, a horn cup and a “basket” used for the duck game represented in the ceramic collection of Los Zapallos site, Arroyo Leyes (Garay Department, Santa Fe Province, Argentina is analyzed. In this paper different elements are described, placed in a context considered in prima facie as resulting from the labor of enslaved individuals belonging to neighbors of Santa Fe la Vieja (XVIIth century, but that also may contain materials corresponding to contemporary or pre-conquest native cultures, to XVIII-XIXth centuries, and to “falsifications” of the early XXth century. On the basis of paste and piece decoration, and of argumental consistency derived from written documents, an attempt to place each element on the time scale is made. Keywords: Arroyo Leyes, archaeology of slavery, Santa Fe la Vieja, chronology

  19. Ramón J. Sender tra verità e finzione, con epilogo cinematografico

    Directory of Open Access Journals (Sweden)

    Arianna Fiore

    2015-12-01

    Full Text Available The Spanish cultural renaissance of the first three decades of the 20th century was interrupted in 1936, when intellectuals abandoned their aesthetic ambitions to describe war. However, some writers were immune to the aesthetic charm of the period. Ramón J. Sender in the 20s used a testimonial style in his journalistic collaborations and in the 30s approached reality for militant purposes, thus anticipating the hybridization of reality and fiction. He narrated the Casas Viejas anarchist revolt in his news reports (1933 and in two narrative reworks, Casas viejas (1933 and Viaje a la aldea del crimen (1934. Fifty years later, the meeting of fiction and reality and the hybridity of genres will also characterize the narrative approach adopted by cinema in narrating the same facts.

  20. O Aspecto nas construções infinitivas e gerundivas complementos de verbos de percepção

    Directory of Open Access Journals (Sweden)

    Patrícia de Araujo Rodrigues

    2012-11-01

    Full Text Available Dans ce travail, nous examinons la structure temporelle descompléments des verbes de perception construits avec l’infinitif (Euvi a Maria chorar et avec le gérondif (Eu vi a Maria chorando, enportugais brésilien. Nous argumentons que la structure de cescompléments correspond à la projection AspP, obtenue commerésultat de l’interaction entre l’aspect lexical, lié à la structureévénementielle du prédicat (qui doit tenir compte, entre autres, dutype sémantique du prédicat – individual-level ou stage-level, etl’aspect grammatical. Cette structure permet d’expliquer certainesdes propriétés sémantiques des constructions étudiées, telles quel’interprétation directe du verbe de perception, la restriction auxprédicats individual-level, la dépendance temporelle de lasubordonnée par rapport à la matrice et les différences aspectuellesobservées entre les compléments infinitifs et gérondifs.

  1. Bénin

    African Journals Online (AJOL)

    Afrique Sciences

    Laboratoire d'Etude des Climats, des Ressources en eau et de la Dynamique des .... milieux physiques, principalement commandés par un gradient climatique méridien, ..... constitue l'exutoire global du bassin de l'Ouémé. .... [8] - LAMACHERE J. M.: Variabilité spatio-temporelle des états de surface en zone sahélienne et.

  2. 373 Inventaire des mouches hématophages dans les élevages ...

    African Journals Online (AJOL)

    zinga

    3Ecole Régionale Post-Universitaire d'Aménagement et de gestion Intégrés des Forêts ... invitent à élaborer une stratégie de lutte et de contrôle des vecteurs pour un ..... l'activité journalière, de la dynamique spatio-temporelle, les préférences ...

  3. Author Details

    African Journals Online (AJOL)

    Kabre, T J. Vol 78 (2014) - Articles Dynamique de structuration spatio-temporelle des populations de familles de macroinvertébrés dans un continuum lac de barrage-effluent-fleuve issu de périmètre irrigué. Bassin de la Volta (Burkina Faso) Abstract PDF. ISSN: 1997-5902. AJOL African Journals Online. HOW TO USE ...

  4. 1763-IJBCS-Article-Christine Ouinsavi

    African Journals Online (AJOL)

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    Available online at http://ajol.info/index.php/ijbcs. Int. J. Biol. Chem. Sci. ... 2 Laboratoire d'Etudes et de Recherches Forestières, Université de Parakou, ... 4 UERS de Biochimie et de Biologie Moléculaire, Faculté de Médecine, ... clinique de la maladie est due au fait que les ... temporelle de la forêt pour le comportement.

  5. Author Details

    African Journals Online (AJOL)

    Houndonougbo, FM. Vol 6, No 5 (2012) - Articles Effet de la variation temporelle de la température ambiante journalière sur le poids des oeufs de poules pondeuses ISA Brown en Côte-d'Ivoire Abstract PDF. ISSN: 1997-342X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  6. Pollution Atmosphérique et Santé: Corrélation ou Causalité? Le Cas de la Relation entre l'Exposition aux Particules et la Mortalité Cardio-pulmonaire.

    Science.gov (United States)

    Dab, William; Ségala, Claire; Dor, Frédéric; Festy, Bernard; Lameloise, Philippe; Moullec, Yvon Le; Tertre, Alain Le; Médina, Sylvia; Quénel, Philippe; Wallaert, Benoît; Zmirou, Et Denis

    2001-02-01

    De nombreuses études épidémiologiques ont observé dans des contextes différents une faible relation à court terme entre les particules et la mortalité cardio-pulmonaire, même quand les normes de qualité de l'air n'étaient pas dépassées. La causalité de cette relation est un enjeu de santé publique en raison de l'importance de la population exposée. Notre objectif est de faire l'inventaire critique des arguments utilisés dans 15 revues de la littérature publiées. Nous expliquons l'importance de distinguer la validité de la causalité et analysons de façon systématique les différents critères de jugement dans le contexte des études écologiques temporelles. Notre conclusion est que la relation observée est valide et que la plupart des critères de causalité sont respectés. Diminuer le niveau d'exposition des populations aux particules est souhaitable. En Europe, en agissant à la source, notamment sur les émissions Diesel, on diminuera aussi d'autres polluants qui peuvent jouer un rôle sanitaire. Aux États-Unis, la situation est plus complexe car les particules sont surtout secondaires. Il est également indispensable de poursuivre les recherches pour mieux connaître les déterminants des expositions globales des individus et mieux comprendre le rôle toxique des différents facteurs physico-chimiques des particules.

  7. Volcanic sequence in Late Triassic – Jurassic siliciclastic and evaporitic rocks from Galeana, NE Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Cruz-Gómez, E.M.; Velasco-Tapia, F.; Ramírez-Fernández, J.A.; Jenchen, U.; Rodríguez-Saavedra, P.; Rodríguez-Díaz, A.A.; Iriondo, A.

    2017-11-01

    In northeastern Mexico, volcanic rocks interbedded with Late Triassic–Jurassic siliciclastic and evaporitic strata have been linked to magmatic arcs developed in the Pangea western margin during its initial phase of fragmentation. This work provides new petrographic and geochemical data for volcanism included in the El Alamar and Minas Viejas formations outcropping in the Galeana region. Andesitic dykes and sills (n= 10) in the El Alamar redbeds show SiO2= 47.5–59.1% and MgO= 1.2–4.2%, as well as a geochemical affinity to island arc magmas. This work represents the first report of this tectonic setting in the region. Geological and petrographic evidence suggest that this arc system likely developed after ~220 and before ~193Ma. Trachy-andesitic and rhyodacitic domes (n= 20) associated with the Minas Viejas gypsum-carbonates sequence show SiO2= 61.8–82.7% and MgO= 0.1–4.0% with a tectonic affinity to continental arc. A rhyodacite sample from this region has been dated by U-Pb in zircon, yielding an age of 149.4 ± 1.2Ma (n= 21), being the youngest age related to this arc. Finally, we propose a threestep model to explain the tectonic evolution from Late Triassic island arc to Jurassic continental arc system in the northeastern Mexico.

  8. Volcanic sequence in Late Triassic – Jurassic siliciclastic and evaporitic rocks from Galeana, NE Mexico

    International Nuclear Information System (INIS)

    Cruz-Gómez, E.M.; Velasco-Tapia, F.; Ramírez-Fernández, J.A.; Jenchen, U.; Rodríguez-Saavedra, P.; Rodríguez-Díaz, A.A.; Iriondo, A.

    2017-01-01

    In northeastern Mexico, volcanic rocks interbedded with Late Triassic–Jurassic siliciclastic and evaporitic strata have been linked to magmatic arcs developed in the Pangea western margin during its initial phase of fragmentation. This work provides new petrographic and geochemical data for volcanism included in the El Alamar and Minas Viejas formations outcropping in the Galeana region. Andesitic dykes and sills (n= 10) in the El Alamar redbeds show SiO2= 47.5–59.1% and MgO= 1.2–4.2%, as well as a geochemical affinity to island arc magmas. This work represents the first report of this tectonic setting in the region. Geological and petrographic evidence suggest that this arc system likely developed after ~220 and before ~193Ma. Trachy-andesitic and rhyodacitic domes (n= 20) associated with the Minas Viejas gypsum-carbonates sequence show SiO2= 61.8–82.7% and MgO= 0.1–4.0% with a tectonic affinity to continental arc. A rhyodacite sample from this region has been dated by U-Pb in zircon, yielding an age of 149.4 ± 1.2Ma (n= 21), being the youngest age related to this arc. Finally, we propose a threestep model to explain the tectonic evolution from Late Triassic island arc to Jurassic continental arc system in the northeastern Mexico.

  9. Étude Des Potentialités Et Contraintes De Mise En Valeur Durable ...

    African Journals Online (AJOL)

    Le fonctionnement hydrologique du fleuve Mono avec les influences du barrage hydro-électrique de Nangbéto a des impacts directs sur la dynamique de la nappe et de la lame d'eau écoulée qui est aussi liée aux variations spatiales et temporelles du régime pluviométrique. L'analyse physico-chimique du sol montre qu'il ...

  10. Application of new fast-electronic techniques to the determination of the exact moment of particle detection; Application des techniques nouvelles de l'electronique rapide a la determination de l'instant precis de detection d'une particule

    Energy Technology Data Exchange (ETDEWEB)

    Hesse, M [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1965-06-01

    Fluctuations in the time response of photomultipliers employed in scintillation counting are studied and experimentally checked. Statistical measurements of the output pulses show that the relative variance of the time fluctuations is minimum for the portion located around the bending point of the leading edge. A shaping circuit using this property is described. Experimental results are given, showing an improvement of the resolving time. (author) [French] Les fluctuations de la reponse temporelle des photomultiplicateurs, utilises dans les detecteurs a scintillations, sont etudiees et mesurees experimentalement. L'etude statistique des signaux de sortie montre que les fluctuations en temps presentent une variance relative minimale pour la region situee autour du point d'inflexion du front de montee. Un circuit de mise en forme utilisant cette propriete est decrit. Des resultats experimentaux sont donnes; ils montrent une amelioration sensible du pouvoir de resolution. (auteur)

  11. Dynamique de structuration spatio-temporelle des populations de ...

    African Journals Online (AJOL)

    SARAH

    30 juin 2014 ... conventionnelle de la « Directive Cadre sur l'Eau de l'Union Européenne (DCE) » préconisée pour ... différence entre les indices de diversité biologique de Shannon de ... reste un outil de choix dans l'évaluation de la qualité.

  12. Diosas de la montaña, espíritus tutelares, seres con máscaras vegetales y chamanes sobre árboles en el arte rupestre levantino español (Sureste de la Península Ibérica

    Directory of Open Access Journals (Sweden)

    Juan Francisco JORDÁN MONTÉS

    2009-12-01

    Full Text Available RESUMEN: Propuestas de interpretación, desde perspectivas antropológicas, para algunas escenas del arte rupestre levantino español, en la estaciones rupestres de Solana de las Covachas (Nerpio, Cerro Barbatón (Letur, El Milano (Mula, Peña Rubia (Cehegín, Minateda (Hellín, cueva de la Vieja (Alpera y Alcaine (Teruel. Se destaca la probable narración de mitos en los que participaban diosas de las montañas y chamanes.RÉSUMÉ: Propositions d'interprétation, du point de vue des perspectives anthropologiques, pour quelques scènes de Tart rupestre du Levant Espagnol, dans les station rupestres de Solana de las Covachas (Nerpio, Cerro Barbatón (Letur, el Milano (Mula, Peña Rubia (Cehegín, Minateda (Hellín, CUeva de la Vieja (Alpera et Alcaine (Teruel. Il se détache la narration probable de mythes ou participaient des déesses de la montagne et des chamans.

  13. Les sociabilités des étudiants marocains en mobilité internationale

    Directory of Open Access Journals (Sweden)

    Sabrina Marchandise

    2014-03-01

    Full Text Available A partir d’une enquête de terrain, l’article propose d’identifier les réseaux sociaux des étudiants marocains en mobilité internationale selon une approche par les sociabilités dans l’hypothèse d’une remise en question des réseaux traditionnels de la migration marocaine. Il s’agit en outre de faire le lien entre les réseaux et l’entretien des relations notamment par le web social. Une méthode d’analyse du web social permet ainsi de repositionner les réseaux identifiés et leurs implications spatiales et temporelles posant ainsi la question du rôle des nouvelles technologies dans les mobilités qualifiées.

  14. ALIKO et al.(1).pmd

    African Journals Online (AJOL)

    SECRETARIAT

    La structure démographique de Labeo coubie a été étudiée en vue d'une gestion rationnelle du stock de poissons dans le lac Taabo. Des échantillonnages ont été effectués en juillet, octobre et décembre 2006, puis en mars et juin 2007. Les analyses ont porté sur la dynamique spatio-temporelle du sex-ratio, de la.

  15. “Désormais…” Essai sur les fonctions argumentatives d’un marqueur de rupture temporelle “Désormais…” A Study on the Argumentative Functions of a Marker of temporality

    Directory of Open Access Journals (Sweden)

    Francis Chateauraynaud

    2010-04-01

    Full Text Available L’analyse des débats contemporains suggère qu’une partie importante de l’activité discursive des acteurs est consacrée à un travail de cadrage, qui vise à construire discursivement le contexte d’interprétation des échanges d’arguments. Il s’agit notamment d’inscrire la confrontation dans une temporalité qui lui donne sens. On propose ici d’articuler la sociologie des controverses et l’analyse argumentative afin de rendre compte de la façon dont la trajectoire des acteurs et des arguments est traitée d’un point de vue temporel (ce qui est renvoyé définitivement vers le passé, ce qui est annoncé, ce qui est jugé improbable ou impossible et, symétriquement, comment au fil des débats et des controverses les manières d’argumenter et de modaliser le temps se transforment. Partant d’une occurrence de l’adverbe « désormais » dans le préambule de la Déclaration Universelle des Droits de l’Homme et du Citoyen de 1789, puis étendant notre analyse à d’autres dossiers (amiante, nucléaire, OGM, nanotechnologies, on montre comment une attention portée à une telle balise temporelle permet d’identifier les points de rupture construits comme pertinents par les acteurs de la controverse, attire l’attention sur la nature de l’attracteur temporel ainsi érigé (décision politique ou juridique, ��vénement dans le champ technico-scientifique, franchissement d’un seuil…, et corrélativement, sur la caractérisation de la nouvelle période ainsi ouverte (nouvelle ère en termes de droits ou d’obligations, ouverture du champ des possibles juridiques ou techniques, révolution épistémique….The analysis of contemporary debates suggests that an important part of the participants’ discursive activity is devoted to a strategy of framing that seeks to propose a certain interpretative context for the exchange of arguments. One of the stakes of such a framing activity is to endow the

  16. Antonio Colinas: la isla y su simbolog??a

    OpenAIRE

    Mart??nez Fern??ndez, Jos?? Enrique

    2012-01-01

    P. 283-314 En Ibiza penetr?? Colinas en el pensamiento primitivo oriental, intuy?? la realidad dual de la isla, ahond?? en la vieja cultura mediterr??nea, percibi?? en el ??mbito isle??o s??mbolos reveladores que dar??an nuevas dimensiones a su obra y escribi?? algunos de sus m??s intensos poemarios

  17. Les prairies de l’estuaire de la Loire : étude de la dynamique de la végétation de 1982 à 2014

    Directory of Open Access Journals (Sweden)

    Mathieu Le Dez

    2017-01-01

    Full Text Available L’analyse diachronique de cartes de végétation est réalisée pour caractériser les dynamiques de la végétation de l’estuaire de la Loire à différentes échelles spatiales et temporelles. Le modèle des matrices de transition est utilisé pour décrire quantitativement les dynamiques observées. Les analyses révèlent notamment la régression des prairies, le développement des roselières et des boisements ainsi que la progression des végétations halophiles. Ces résultats sont mis en relation avec l’évolution des usages sur ce territoire et les modifications du fonctionnement hydro-sédimentaire de l’estuaire.

  18. Territorio y turismo industrial en el Valle de Sabero (Le??n)

    OpenAIRE

    Benito del Pozo, Paz

    2005-01-01

    566 p. Desde estas p??ginas se apuesta por rescatar del olvido esa parte de la memoria colectiva que corresponde a las viejas f??bricas, minas y ferrocarriles abandonados y buscar actividades alternativas que las pongan en valor y se apliquen al desarrollo de espacios que en el pasado fueron pr??speros gracias a ellas

  19. Dynamiques sociale et spatio-temporelle resultant de la colonisation ...

    African Journals Online (AJOL)

    Cette étude vise à analyser le phénomène de la colonisation agricole, les changements socio-économiques apparus et les nouvelles formes de gestion des ressources ... Through Models used for better understanding the land use change dynamics, it appeared clearly that agricultural colonization will gain always more in ...

  20. Activity of volcanoes of Costa Rica during the period 2012-2013

    International Nuclear Information System (INIS)

    Alpizar, Yemerit; Mora, Mauricio M.; Mora Amador, Raul; Gonzalez, Gino; Ramirez, Carlos J.; Taylor, Waldo

    2014-01-01

    A synthesis of results and observations of two years of surveillance is presented of the active volcanoes of Costa Rica (Volcan Rincon de la Vieja, Arenal, Poas, Barva, Irazu, Turrialba). The results have enriched the database of the National Seismologic Network, which has four decades of experience in the area and the implementation of technologies. The volcanic activity presented in 2012 is relatively normal with slight signs of seismic activity and phreatic. An increase is presented after the earthquake Samara (Mw = 7.6). The temperature rise manifested mainly in the fumaroles, some changes in crater lake, phreatic activity and volcanic seismicity. The conditions were maintained throughout the period of this study [es

  1. Puntos sobre las íes en la literatura colombiana

    Directory of Open Access Journals (Sweden)

    Luis Vidales

    1966-01-01

    Full Text Available En el último tercio del siglo pasado la contienda cotidiana toma sabor agrio en nuestra literatura -en veces violento, en veces apaciguado, de conformidad con el temperamento de sus corifeos- pero de todos modos decisivo siempre, de atrincheramiento contra el reducto de la vieja guardia teológico-escolástico-cosmopolitista de nuestra cultura.

  2. Macrophyte Communities of Andean Rivers: Composition and Relation with Environmental Factors

    Directory of Open Access Journals (Sweden)

    Alida Marcela Gómez Rodríguez

    2017-01-01

    Full Text Available Small streams of tropical Andes have been poorly studied. Therefore, there is little information about the structure, dynamics and function of their macrophyte communities. In this research, aquatic plant communities of 18 Andean streams of La Vieja (Quindío and Otún (Risaralda river basins were studied; those are some of the basins most affected by anthropic activities in the country. Streams were selected according to their association with the main land’s uses of the region in both basins. The aim of the study was to evaluate the effect of land use on the structure of macrophyte communities. Streams running exclusively through each land use were selected. Sampling was done in two different climatic seasons of year 2006. Vegetation found (54 species belonging to 25 families was dominated by species with high capability of adaptation to changing and disturbed environments. Richness and abundance of macrophytes were lower than those reported in other tropical aquatic systems. Variables associated with land use, such as temperature, conductivity and type of substrate of the streams mainly explained the structure of the macrophyte communities: streams running on meat-cattle areas -with higher temperatures, conductivity and dominance of sandy-slimy substrates- had higher macrophyte species richness and abundance than streams of protected-forest areas, with higher coverage by riparian vegetation, lower temperatures and conductivity and rocky substrates.

  3. Bóvedas por arista de paraboloides hiperbólicos asimétricos

    Directory of Open Access Journals (Sweden)

    López Díaz, L. F.

    1998-12-01

    Full Text Available The shell groin vaults constructed in previous decades were based on the same principles as old stone and brick groin vaults; that are to say, with identical symmetrical foils. By introducing asymmetries in the shape of the foils, the traditional design can be improved, thus opening up a new realm of formal and spatial possibilities wich allow us to recover and renew this old architectural tradition. The shell constructions wich are described in this article are founded on this idea.

    Las bóvedas por arista laminares que se construyeron en décadas anteriores fueron concebidas sobre los mismos principios que las viejas bóvedas por arista de piedra y ladrillo, es decir, con lóbulos simétricos e iguales entre sí. Introduciendo asimetrías en la forma de los lóbulos puede superarse el esquema tradicional, abriéndose un nuevo campo de posibilidades formales y espaciales que permite recuperar y renovar esta vieja tradición arquitectónica. Las construcciones laminares que se muestran en el presente artículo están fundadas en esta idea.

  4. Non Linear Dynamics and Chaos (La Dynamique Non-Lineaie et le Chaos)

    Science.gov (United States)

    1993-06-01

    du cerveau humain, tout autant que les "machines neuronales" en cours de pour plus de details voir en ref. [ I Il’article de A. Favre d~veloppement...l’hypothese sur la faqon syst~rnes nerveux. L’id~e selon laquelle la dont varient les coefficients avec le temps dynamique du cerveau , dans certains...coefficients de interprke comme la preuve d’un caract~re H’quation temporelle sont constants. 11 n’est fugitif des attracteurs du cerveau ? Ou bien

  5. Municipalidad y Educación

    Directory of Open Access Journals (Sweden)

    Agustín ESCOLANO BENITO

    2010-03-01

    Full Text Available RESUMEN: Casi dos siglos de centralismo político-escolar, particularmente patente en el área de los países latinos, y de forma tal vez más expresa aún en el nuestro, han hecho olvidar la vieja y siempre nueva máxima de Plutarco, según la cual «la ciudad es el mejor instructor».

  6. Declive económico y políticas regionales: el caso de Asturias

    Directory of Open Access Journals (Sweden)

    JOSÉ Mª GARCÍA BLANCO

    1998-01-01

    Full Text Available El declive de las "viejas regiones industriales" constituye uno de los problemas más difíciles que han de afrontar los gobiernos de muchos países industrializados. Los planes de revitalización, que han recurrido predominantemente a los incentivos a la localización de empresas y a la mejora de las infraestructuras, han tenido en general poco éxito. Es muy común que estos problemas se expliquen mediante lo que podríamos llamar una "teoría del capital social". Con ella se hace referencia (de manera casi tautológica a una serie de condiciones "extraeconómicas", representadas como "mentalidades", "actitudes", "factores invisibles del desarrollo" o (preferentemente "cultura", cuyo cambio se supone que debería añadirse a otras condiciones específicamente "económicas" para que tales planes puedan tener éxito. Pero esta problemática puede entenderse mejor si se parte de otra teoría que tome como puntos de referencia fundamentales los conceptos de sistema autorreferencial y de memoria sistémica. De acuerdo con ellos, cuando una formación regional está acostumbrada a identificar como la causa de su bienestar la capacidad de presión y negociación políticas, la puesta en marcha de más y más programas de incentivos a la instalación de nuevas empresas, unida al mantenimiento de las viejas e ineficientes industrias y al aseguramiento del nivel de renta de la región, en tanto se produce tal instalación, sólo sirven para revalidar la eficacia atribuida a una forma de causalidad económica que, en realidad, es un obstáculo decisivo para la transformación del sistema económico de las "viejas áreas industriales", pues su reto es, precisamente, pasar de ser sistemas estacionarios y políticamente estabilizados a ser sistemas capaces de elaborar estructuras disipativas y, con ello, de autoorganizarse.

  7. Simulation numérique en physique statistique

    OpenAIRE

    Viot , Pascal

    2006-01-01

    1 - Mécanique statistique et simulation numériqueHistorique de la simulation. Moyennes d'ensembles (Ensemble microcanonique. Ensemble canonique. Ensemble grand-canonique. Ensemble isobare-isotherme). Les systèmes modèles (Introduction. Les liquides simples. Modèle d'Ising et gaz sur réseau. Equivalence). Moyenne temporelle. Ergodicité.2 - Méthode Monte CarloIntroduction. Échantillonnage aléatoire et pondéré. Chaîne de Markov pour échantillonner le système à l'équilibre. Algorithme de Métropol...

  8. Variation spatiale et temporelle de la susceptibilité de Biomphalaria ...

    African Journals Online (AJOL)

    SARAH

    31 janv. 2018 ... Schistosoma haematobium with observations on protein electrophoretic pattern of the snails. Veterinary. Parasitology, 161 : 207-212. Mostafa OM, El-Dafrawy SM, 2011. Susceptibility of. Biomphalaria spp. to infection with. Schistosoma mansoni in sympatric and allopatric combinations with observations on ...

  9. Cuento: Agua rota

    Directory of Open Access Journals (Sweden)

    José Puben

    1966-04-01

    Full Text Available Ya avanzada la noche la lluvia empezó a caer, clara y sonora, en el empedrado del patio y sobre los amplios techos de la vieja casa. El ruido del aguacero lo despertó de un profundo sueño. La sensación de que la cañada aumentaba, a cada momento, venía del atronador y permanente cauce de las aguas vecinas.

  10. Abu Ghraib: Periodismo de investigación

    Directory of Open Access Journals (Sweden)

    María Helena Barrera Agarwal

    2015-01-01

    Full Text Available La develación de escándalos político-militares de magnitud por parte de los medios en los años sesenta y setenta iniciaron transformaciones inesperadas hasta la renuncia del presidente Nixon. La nueva generación de reporteros no ha tomado el relevo de las viejas glorias del periodismo estadounidense, ahora se prefieren reportajes amarillistas e información insustancial.

  11. "Cuando el ciudadano se violenta". Algunos apuntes para su reinterpretación

    Directory of Open Access Journals (Sweden)

    Pablo René Belzagui

    2015-06-01

    Full Text Available Los actos de violencia en que algunos ciudadanos incurrieron durante los amotinamientos policiales de fines de 2013 son el marco de referencia donde poner a dialogar textos de Cornelius Castoriadis, a través de la interpretación de Javier Cristiano, con otros producidos por estas tierras, como los de Rodolfo Kusch y Octavio Paz, para ensayar “viejas formas nuevas” de revisar los actos de violencia sucedidos.

  12. Brique après brique, construire le latino-américanisme toulousain (et français)

    OpenAIRE

    Guibert, Martine; Gaignard, Romain

    2013-01-01

    Introduction Durant plus d’une quarantaine d’années (des années 1960 jusqu’au début des années 2010), Romain Gaignard a posé une à une les briques de l’édifice latino-américaniste toulousain (et français), selon un processus de construction qui a valorisé rencontres, hasards de la vie et exigences politiques des plus hautes instances nationales. Repoussant les frontières académiques et institutionnelles, jouant avec les emboîtements d’échelles, tant spatiales que temporelles, il a ainsi prati...

  13. Exploration fonctionnelle de l'axe corticotrope de la brebis atteinte de tremblante

    OpenAIRE

    Galéa, Jessie

    2001-01-01

    L'objectif de cette étude expérimentale était d'identifier l'origine de l'augmentation de production de cortisol par les glandes surrénales induite par la tremblante grâce à une exploration fonctionnelle de l'axe hypothalamo-hypophyso-surrénalien. Pour cela les cinétiques temporelles des concentrations plasmatiques d'ACTH des brebis atteintes de tremblante ont été analysées et le taux de production d'ACTH a été déterminé chez 14 brebis (6 brebis saines et 8 brebis atteintes de tremblante). De...

  14. Les activités sportives « hybrides » comme réponse à l’accélération des rythmes de vie

    OpenAIRE

    Quidu, Matthieu

    2017-01-01

    Dans le monde contemporain, la majorité des acteurs sociaux fait quotidiennement l’expérience d’une accélération effrénée des rythmes de vie. Cette course contre la montre, qui tend à devenir chronique, semble affecter non seulement la sphère des obligations professionnelles et familiales mais aussi le champ des pratiques de loisirs. Dans un contexte de pénurie temporelle, où le temps est devenu une denrée aussi rare que précieuse, consentir d’y consacrer une partie à des activités non produc...

  15. Etude saisonnière de la contamination métallique des macroalgues de la lagune nord de Tunis

    OpenAIRE

    Chouba, L.; Ajjabi-Chebil, L.; Herry, S.

    2010-01-01

    Dans le but de démontrer la capacité de bioaccumulation métallique des macroalgues et sa variation temporelle, on s’est intéressé à la détermination de la gamme de concentrations en métaux traces (Plomb, Cadmium, Fer, Manganèse et Zinc) dans trois macroalgues vertes (Ulva rigida, Chaetomorpha linum, Caulerpa prolifera) au niveau de la lagune nord et du canal de navigation de Tunis sujettes à d’importants rejets anthropiques. Des collectes saisonnières ont été faites dans la lagune de Tunis du...

  16. Second order transient effects in a gaseous diffusion plant; Effets transitoires du second ordre dans une installation de separation isotopique

    Energy Technology Data Exchange (ETDEWEB)

    Bouligand, O M [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1963-07-01

    Perturbations applied to various parameters of an isotope separation plant indices an average effect on production. This effect is determined for a finite cascade over infinite reservoir. Perturbations on product flow rate and inter-stage transports are considered. (author) [French] Les fluctuations des divers parametres d'une installation de separation isotopique alterent la moyenne temporelle de la concentration du produit enrichi, Cet effet peut etre calcule dans le cas d'une cascade constante alimentee a sa base par un reservoir infini pour des fluctuations qui affectent les capacites des etages et le debit de production. (auteur)

  17. Diversité et succession des protistes dans l'océan Arctique

    OpenAIRE

    Terrado, Ramon

    2011-01-01

    L'Arctique est la région du globe où le réchauffement climatique est le plus prononcé. L'étude de la diversité des microorganismes, leur dynamique de communauté et les facteurs environnementaux qui agissent sur eux s'avèrent donc importants pour comprendre comment ces communautés vont réagir à des changements environnementaux. Cette thèse explore la diversité des protistes et leur dynamique dans l'océan Arctique sur une échelle temporelle ainsi que spatiale. La méthodologie utilisée dans cett...

  18. La medicina en el Nuevo Reino de Granada en la segunda mitad del siglo XVIII

    Directory of Open Access Journals (Sweden)

    Andres Soriano Lleras

    1964-11-01

    Full Text Available En 1783 Mutis decía en carta al Virrey Flórez que en materia de quinas la materia médica debe ser la corteza de las ramas jóvenes, pues la de las viejas ya es muy pobre. El capitán Antonio de Latorre Miranda encontró la quina anaranjada en Fusagasugá y reclamó para sí el descubrimiento de las quinas en el Nuevo Reino de Granada.

  19. Evidence of a glass workshop in the Roman city of Augustobriga (Talavera la Vieja, Cáceres | Evidencias de un taller de vidrio en la ciudad romana de Augustobriga (Talavera la Vieja, Cáceres

    Directory of Open Access Journals (Sweden)

    Blanca María Aguilar-Tablada Marcos

    2006-12-01

    Full Text Available Recent works of prospection made in the ancient city of Augustobriga (Cáceres have allowed the discovery of a fragment of a mould used for decorating glass prismatical bottles. Thanks to the discovery and identification of this mould, we can place in this site a glass workshop that worked in relation with a potter workshop. This is a highly important discovery, because this is the only mould found not only in Spain but in the whole Iberian Peninsula up to date, where there are just few traces of glass workshops. | Recientes trabajos de prospección llevados a cabo en la antigua ciudad de Augustobriga (Cáceres, han permitido descubrir un fragmento de molde destinado a la decoración de la botella prismática de vidrio. El descubrimiento e identificación de este molde nos permiten situar, en este sitio, un taller de vidrio que trabajaría en relación con un alfar. Este hallazgo reviste gran importancia, ya que se trata, hasta el momento, del único molde localizado no sólo en España sino en toda la Península Ibérica, donde los indicios sobre talleres vidrieros siguen siendo muy escasos.

  20. The chemically zoned 1949 eruption on La Palma (Canary Islands): Petrologic evolution and magma supply dynamics of a rift zone eruption

    OpenAIRE

    Klügel, Andreas; Hoernle, Kaj A.; Schmincke, Hans-Ulrich; White, James D. L.

    2000-01-01

    The 1949 rift zone eruption along the Cumbre Vieja ridge on La Palma involved three eruptive centers, 3 km spaced apart, and was chemically and mineralogically zoned. Duraznero crater erupted tephrite for 14 days and shut down upon the opening of Llano del Banco, a fissure that issued first tephrite and, after 3 days, basanite. Hoyo Negro crater opened 4 days later and erupted basanite, tephrite, and phonotephrite, while Llano del Banco continued to issue basanite. The eruption ended with Dur...

  1. La construcción de la entomología agrícola en Venezuela y la facultad de agronomía de la UCV: una visión histórica.

    OpenAIRE

    Pacheco Troconis, Germán

    2007-01-01

    Presentación. Freites, Yajaira Viejas concepciones y nuevos términos. Old conceptions and new terms. Strozzi, Susana Núcleo ecotecnológico para el desarrollo local sostenible de Camurí grande, estado Vargas. Nucleo ecotecnologico for the sustainable local development of great Camurí, state Vargas. Da Silva, María de Fátima; Libretti, Gianfranco y Ramos, Niurka Villafañe y la estadística del Táchira en 1877. Una herramienta de racionalización de la actividad urbana. ...

  2. La descentralización del Estado ecuatoriano en tiempos de una nueva Constitución

    OpenAIRE

    Vergara Ortiz, Francisco Xavier

    2011-01-01

    Me he permitido realizar el presente trabajo, por considerarlo un tema de vieja preocupación, como lo indico más adelante, en estos últimos tiempos se ha expedido la nueva normativa legal que recoge algunas de las propuestas de diversos sectores, en torno a la descentralización integral del Estado Ecuatoriano en el campo administrativo, político - funcional, territorial, financiero y legal, siendo esto, mérito suficiente para haberlo estudiado en el marco del Derecho Constit...

  3. La tematización de la corrupción como clivaje de la política argentina en los noventa

    Directory of Open Access Journals (Sweden)

    Sebastián Mauro

    2012-01-01

    posicionamientos ideológicos, discursos y lenguajes que construyeron para tratarla. Aborda tanto las condiciones de emergencia de dichos discursos (por ejemplo, el tratamiento de la impunidad como marco de referencia de los nuevos movimientos sociales durante la transición democrática, como sus sedimentaciones en las escenas políticas posteriores, abriendo paso a la emergencia de nuevos actores y nuevos discursos (en particular, enmarcados en la distinción entre una "vieja" y una "nueva" política.

  4. Aux origines des Jeux olympiques.

    Directory of Open Access Journals (Sweden)

    Isabelle Debilly

    2005-11-01

    Full Text Available Si les Jo modernes sont régulièrement sous les feux de l’actualité, soit par la répétition temporelle des Olympiades elle-même, soit par les enjeux économiques féroces qui découlent du choix des lieux, ceux de l’Antiquité sont en général cantonnés au domaine scolaire ou universitaire. Néanmoins, ils bénéficient tous les quatre ans d`un éclairage médiatique. L’ouvrage Olympie. La victoire pour les dieux est au croisement des deux domaines. En effet, écrit par un ...

  5. Intégration des pluies prévues du système AROME-PI dans le système AIGA

    OpenAIRE

    Demargne, J.; Javelle, P.

    2015-01-01

    / Cette étude a été réalisée pour le SCHAPI (Service Central d'Hydrométéorologie et d'Appui à la Prévision des Inondations) pour analyser l'amélioration du système d'avertissement sur la possibilité de crues rapides AIGA en intégrant des prévisions de pluie future à courte échéance et fine résolution spatio-temporelle et en prenant en compte leurs incertitudes. Le SCHAPI développe actuellement un service d'avertissement automatisé valable sur l'ensemble de la France, qui sera complété par un ...

  6. Évaluation de l'apport des pluies prévues par le système opérationnel AROME-PI dans le système Vigicrues-Flash

    OpenAIRE

    Demargne, J.; Javelle, P.

    2016-01-01

    / Cette étude a été réalisée pour le SCHAPI (Service Central d'Hydrométéorologie et d'Appui à la Prévision des Inondations) pour analyser l'amélioration du système d'avertissement sur la possibilité de crues rapides en intégrant des prévisions de pluie future à courte échéance et fine résolution spatio-temporelle et en prenant en compte leurs incertitudes. Le SCHAPI développe actuellement un service d'avertissement automatisé valable sur l'ensemble de la France, appelé Vigicrues-Flash, qui de...

  7. L’écriture du temps dans Robinson Crusoe

    OpenAIRE

    Bulckaen, Denise

    2018-01-01

    “Le récit est une séquence deux fois temporelle... il y a le temps de la chose-racontée et le temps du récit (temps du signifié et temps du signifiant)”. Cette citation se trouve au début du chapitre que Genette consacre à “Ordre” dans Figures III. Elle s'applique à de nombreux romans, mais elle est particulièrement intéressante quand on considère le roman de forme autobiographique. Le décalage entre “le temps du signifié” et “le temps du signifiant” est plus ou moins grand selon les romans. ...

  8. Les processus spatio-temporels: quelques notions et concepts préalables à leur représentation

    Directory of Open Access Journals (Sweden)

    Jean-Paul Cheylan

    2007-09-01

    Full Text Available Les approches conjointes de l’espace et du temps, notamment en cartographie animée, supposent un ré examen de quelques notions et concepts mobilisés. Trois concepts, vie, mouvement et généalogie, sont proposés et explicités. Les requêtes susceptibles d'être adressées aux bases de données spatio-temporelles sont abordées à l’aide d’une proposition de classification. Sont enfin explorées quelques problèmes, pistes et exemples de représentations animées conjointes du temps et de l’espace, illustrant les principaux concepts abordés.

  9. Clinical and imaging characteristics of the vascular dementia. Preliminary studies

    International Nuclear Information System (INIS)

    Gomez Viera, Nelson; Rivero Arias, Edmundo; Perez Nellar, Jesus; Begueria Santos, Ramon; Arias Sifontes, William; Raiteris Flores, Juan

    1997-01-01

    A descriptive prospective study was carried out in 41 patients presenting with vascular dementia from Habana Vieja municipality, Havana City, in order to know some of the clinical and imaging characteristics of this disease. The main risk factors observed were the history of cerebrovascular disease and arterial hypertension. Depression, sleeping disorders and focal and pseudo bulbar neurologic signs were the most frequent clinical findings. Folstein neuropsychological test evidenced an important disorder of attention, calculation, the evocation memory and orientation. According to this test, 29 % of the patients had a severe dementia and nearly 50 % showed a severe handicap. The most frequent imaging findings observed in the computerized axial tomography of the cranium were cerebral atrophy, and single or multiple infarctions. Multiple cerebral infarctions, the lacunar status, subcortical encephalopathy of Binswanger, and single infarction located in cerebral areas related to cognition were considered as possible psychopathological mechanisms associated with the disease

  10. Las rimas de Giannantonio de Petruciis, conde de Policastro

    OpenAIRE

    Rodríguez Mesa, Francisco José

    2013-01-01

    La lírica culta napolitana en lengua italiana del segundo Quattrocento está dominada por los llamados líricos de vanguardia o poetas de la vieja guardia aragonesa; es decir, Giovanni Aloisio, Giovan Francesco Caraciolo, Francesco Galeota, Pietro Jacopo de Jennaro, Giannantonio de Petruciis y Rustico Romano. A pesar de que las obras de estos líricos encierran múltiples paralelismos, acentuados por el hecho de que operaron bajo unas circunstancias políticas, históricas y culturales similares, l...

  11. La noviolencia en África: la modernidad de la paz

    OpenAIRE

    Massó, Ester

    2011-01-01

    Los conflictos bélicos crecientes asociados a la globalización constituyen un problema de máxima relevancia en África. Junto a situaciones aún coleantes consecuencia directa de las descolonizaciones mal hechas, nuevas y viejas formas de conflicto convierten muchos lugares del continente en escenarios recurrentes de guerras y masacres, palabras estas además que suelen ocupar los noticiarios habituales y que contribuyen, una vez más, al nefasto estereotipo del África intrínsecamente problemátic...

  12. The Influence of William Faulkner in the Works of Gabriel García Márquez : A Rose for Emily and Cien años de soledad

    OpenAIRE

    Hanagata, Kazuyuki

    2004-01-01

    En su obra maestra Cien ethos de soledad (1967), Gabriel Garcia Marquez adapta e incorpora uno de los mejores cuentos de William Faulkner, "A Rose for Emily, transformando a su protagonista Emily en tres mujeres de la familia Buendia -- Rebeca, Amaranta y Fernanda. Rebeca es una Emily marqueciana que ya habia aparecido en sus primeras obras como La hojarasca (1955) y "Un dia despues del sabado" (1962). En estas obras aparece como una viuda anciana que vive sola en una casa vieja despues de la...

  13. Armonizar entre libre comercio y protección al medio ambiente: ¿Es el artículo XX del GATT la herramienta adecuada para la resolución de controversias relacionadas con el medio ambiente en la OMC?

    OpenAIRE

    Beltrán Gómez, Luz Helena

    2009-01-01

    Artículo xx del gatt (General Agreemeent on trade and tariffs - acuerdo General sobre Tarifas y Comercio) contiene las excepciones generales al acuerdo, su aplicación ha sido polémica en el sentido de que los tiempos exigen nuevas interpretaciones de viejas normas. ello en razón a que estas interpretaciones pueden llegar a ser lejanas del texto, así como del espíritu inicial de las excepciones consagradas en un principio. estas excepciones fueron escritas en respuesta a necesidades e interese...

  14. Ciudadanía, representación política y elecciones en el Caribe colombiano, 1820-1836

    Directory of Open Access Journals (Sweden)

    Jorge Conde Calderón

    2009-01-01

    Full Text Available El presente artículo muestra el papel que jugaron las elecciones entre los diferentes sectores sociales de la sociedad cartagenera entre 1820 y 1836. El interés principal se centra en las articulaciones de la sociedad alrededor del voto, los valores que aparecieron durante la competencia electoral, las modificaciones operadas en las nuevas y viejas jerarquías políticas y como era concebida la representación política entre los diversos actores políticos.

  15. Notas clínicas: Curiosidades de hospital

    Directory of Open Access Journals (Sweden)

    Luis Laverde M.

    1933-08-01

    la casa que albergaba en otras épocas el viejo molino de La Hortúa. Oculto por los nuevos pabellones, sus amplias salas reciben - vieja costumbre! - su contingente diario de enfermos, compuestos casi en su mayor parte por aquellos a quienes la premura del examen no ha permitido clasificar acertadamente en los cuadros nosológicos o bien por otros, cuyo aspecto decrépito y su estado de mal avanzado hacen suponer que ocuparán tan sólo breves días la cama.

  16. Morphological and geochemical features of crater lakes in Costa Rica: an overview

    Directory of Open Access Journals (Sweden)

    Antonio DELGADO HUERTAS

    2009-08-01

    Full Text Available This paper describes the compositional and morphological features of the crater lakes found in the volcanoes of Rincón de La Vieja, Poás, Irazú, Congo and Tenorio volcanoes (Costa Rica. As evidenced by the distribution of the water and dissolved gas chemistry along vertical profiles, the different fluid sources feeding the lakes reflect the present status of each of the volcanic systems. The chemical features of the Caliente (Poás volcano and Rincón crater (Rincón de la Vieja volcano lakes are mainly dependent on i inputs of magmatic fluids from sub-lacustrine fumaroles and ii water-rock interaction processes. Conversely, the Irazú lake is mainly affected by the presence of CO2(H2S-rich fluids discharged from a hydrothermal system, which masked possible magmatic fluid contributions. Rainfall and organic activity are the main factors responsible for the chemical composition of Hule, Botos, Congo and Tenorio lakes. The chemical and isotopic water composition of Botos, Irazú and Hule lakes have displayed no significant variations along the vertical profiles. In contrast, Caliente lake shows a distinctive chemical stratification, mainly involving F-, Cl- and SO4 2-. The behaviour of these compounds seems to be governed by both dissolution of highly acidic species, i.e. HF, HCl and SO2 released from the magmatic environment, and microbial activity. Despite the significant increases with depth of dissolved CO2 at Caliente and Irazú lakes, the hazard for Nyos-type gas eruptions can be considered negligible, since i the water volumes are too small and ii the convective heat transfer limits the CO2 recharge rate. The relatively high concentrations of dissolved CO2 measured at the maximum depth of the Hule lake are likely produced by both degradation of organic material and degassing from a deep source. The sporadic episodes of fish deaths recently observed in this lake can be associated with lake overturn processes that have favoured the rise up

  17. Hunting Leadership Targets in Counterinsurgency and Counterterrorist Operations: Selected Perspectives and Experience

    Science.gov (United States)

    2007-06-01

    DefenceInternet/Defence- News/MilitaryOperations/SpecialForcesSupportGroupFormsInWales. htm. 60. Victor Alonso, “GAL, terrorismo de estado ” (GAL, terrorism of...Guerrilla Movement,” El Financiero , 18 Novem- ber 1994, as translated in FBIS-LAT-94-226, pp. 12-13 c. Orlando Ortíz, Genaro Vázquez, 3rd ed. (Mexico City...Backgrounder No. 660, 5 July 1988 b. Tomás Tenorio Galinda, “Una vieja visión de la guerrilla” c. “The Announced Guerrilla Movement,” El Financiero 97

  18. Crónica de un plan anunciado: Territorio, planificación y políticas públicas en el proceso de reconstrucción de la ciudad de San Juan (1944-1949)

    OpenAIRE

    Christensen, Dolores

    2016-01-01

    El sismo de la ciudad de San Juan del año 1944 resultó un punto de inflexión en su historia. La mayor parte de las construcciones quedaron destruidas y fue necesario planificar con celeridad su reconstrucción. De allí que comenzara a pensarse cómo debía ser la ciudad, qué factores se conservarían de la “vieja San Juan”, y qué nuevos elementos se incluirían. Asimismo, junto con estos interrogantes surgió también el cuestio...

  19. EFECTOS DE LA ATENCIÓN DIVIDIDA SOBRE LA MEMORIA EPISÓDICA EN ADULTOS JÓVENES Y MAYORES/ EFFECTS OF DIVIDED ATTENTION ON EPISODIC MEMORY IN YOUNG AND OLDER ADULTS/ EFEITOS DA ATENÇÃO DIVIDIDA SOBRE A MEMÓRIA EPISÓDICA EM ADULTOS JOVENS E IDOSOS

    OpenAIRE

    Selene Cansino; Patricia Trejo-Morales

    2011-01-01

    El objetivo del estudio fue determinar los efectos de dividir la atención durante la codificación y la recuperación en adultos jóvenes y mayores cuando una tarea de memoria y otra secundaria se realizaron en la misma modalidad. Los 72 participantes realizaron una tarea secundaria de discriminación visual mientras clasificaban imágenes (natural/artificial) en la codificación, o las reconocían (vieja/nueva) en la recuperación. Los adultos mayores cometieron más errores en la tarea secundaria qu...

  20. Resultados adversos en la procreación en mujeres trabajadoras en la floricultura colombiana: un resumen de la evidencia mediante metanálisis

    OpenAIRE

    Álvaro Javier Idrovo; Luz Helena Sanín

    2007-01-01

    Introducción. Los trabajadores en la floricultura están expuestos a plaguicidas y otros factores de riesgo. Se sospecha que el trabajo en estos ambientes ocupacionales está asociado con resultados adversos en la procreación. Sin embargo, los estudios epidemiológicos en Colombia, el país de América Latina con más vieja tradición con estos cultivos, no son consistentes ni concluyentes. Objetivo. Cuantificar la relación entre el trabajo de las mujeres en la floricultura colombiana con la apar...

  1. New records of Kinosternon leucostomum postinguinale (Duméril and Bibron, 1851 from the Central Cordillera of Colombia

    Directory of Open Access Journals (Sweden)

    Julián Arango-L

    2018-03-01

    Full Text Available We record the presence of Kinosternon leucostomum postinguinale (DUMÉRIL and BIBRON, 1851 populations in the department of Quindío, Central Cordillera of Colombia. Despite the turtle is found in the neighboring departments of Tolima and Valle del Cauca, this is the first evidence of its distribution on this locality. We present biological and ecological records of individuals in the lower and middle area of La Vieja basin inhabiting small tributaries and ponds between pastures. Currently it is unknown whether the species was introduced or ignored until now.

  2. Aplicaciones, servicios y procesos distribuidos : Una visión para la construcción de software

    OpenAIRE

    Bazán, Patricia

    2017-01-01

    En los orígenes de la ciencia de la computación todo el énfasis estuvo puesto en desarrollar sistemas que automatizaran tareas que se hacían manualmente. Este era suficiente desafío. En la actualidad, se han automatizado muchas tareas y el gran desafío es cómo mejorar la capacidad de los sistemas para alcanzar nuevos requerimientos: agregar nuevas interfaces, combinar múltiples fuentes de datos en una sola, interactuar con dispositivos móviles y reemplazar viejas aplicaciones con nuevas. ...

  3. Facilitación de la memoria por autoestimulación eléctrica intracraneal en ratas normales y con lesión cerebral

    OpenAIRE

    Redolar Ripoll, Diego

    2004-01-01

    Consultable des del TDX Títol obtingut de la portada digitalitzada La estimulación eléctrica intracraneal (AEIC) del hipotálamo lateral (HL), en el haz prosencefálico medial (HPM), facilita los procesos de aprendizaje y memoria en una amplia variedad de paradigmas tanto en ratas jóvenes como en viejas. Algunos datos apoyan la idea de que el efecto de la AEIC del HL parece estar relacionado con las propiedades arousalizantes del sistema de refuerzo del HPM. La memoria es un proceso activ...

  4. Avances y rémoras de las concepciones morales en la sociedad argentina

    OpenAIRE

    Barrancos, Dora Beatriz

    2013-01-01

    La comunicación plantea algunos cambios vinculados con la moral sexual en la Argentina y también la persistencia de viejas nociones. Se analizan las dificultades que hubo para la obtención de derechos civiles en comparación con otros países, especialmente el divorcio. Se contrasta esa dificultad legal con ciertas conductas del pasado, como los casamientos de argentinos y de residentes argentinos en el Uruguay, en muchos casos bígamos. En un giro de cambios inesperados, la Argentina modificó l...

  5. Apuntes sobre control de costos en la construcción

    OpenAIRE

    Gómez Posada, Gustavo Cayetano

    2000-01-01

    Resumen: ha sido una permanente y vieja aspiración de un grupo de profesores de la Facultad, entre los cuales me incluyo, dar el primer paso para abordar el tema de los controles de costos en la construcción, puesto que todo el acervo existente con respecto a dicho tema, giraba alrededor de una cantidad de conceptos aislados, de puntos de vista muy personales o particulares de una entidad o empresa, pero siempre con el común denominador de que "algo" faltaba, de que lo que se manejaba como co...

  6. La mujer caboverdeana en la Argentina, entre tradición y modernidad. En: Avá, nº 14

    OpenAIRE

    Maffia, Marta M.

    2008-01-01

    Para analizar la temática propuesta en este trabajo, nos remitimos en primer término, al estudio de la organización familiar caboverdeana y de la ideología patriarcal que la sustenta en relación a la organización/formación social del archipiélago y su evolución, ya que se trata de una sociedad basada fundamentalmente en la vieja institución “escravócrata”. Desarrollamos brevemente cuál fue el perfil de los primeros pobladores de las islas y la...

  7. Données préliminaires sur la distribution spatio-temporelle des ...

    African Journals Online (AJOL)

    Primary data on the space and time distribution of the hammer-headed bats, Hypsignathus monstrosus H. Allen, 1861 in the district of Plateau (Abidjan, Côte d'Ivoire). The population ofhammer-headed bats, Hypsignathus monstrosus H. Allen, 1861, in the district of Plateau in Abidjan has been studied from August 2005 to ...

  8. L’enseignement supérieur et la recherche. Une pression temporelle accrue

    OpenAIRE

    Gastaldi, Lise; Lanciano-Morandat, Caroline

    2017-01-01

    Cet article s’attache à l’étude des temporalités du travail dans l’enseignement supérieur et la recherche (ESR) dans le contexte récent d’accélération des transformations qui traversent ce secteur. Il s’intéresse notamment à l’influence des réformes de la gouvernance publique, de la mondialisation de l’ESR et des mutations des attentes des diverses parties prenantes de ce secteur. Il semble en résulter un double mouvement d’extension des durées de travail et de réduction de la maîtrise des ry...

  9. Tradition et distance temporelle : « de la justesse de la compréhension » chez Hans-Georg Gadamer

    Directory of Open Access Journals (Sweden)

    Paul Marinescu

    2012-12-01

    Full Text Available In this paper, I will discuss Gadamer’s attempt to reach to a deeper dimension of truth, situated beneath the scientific objectivity and independent from methodological criteria. If the truth finds its core in tradition, as Gadamer’s philosophical hermeneutics says it, and there is no objectivity other than the confirmation given by the historical prejudices, how is it still possible to consider the problem of the correctness of the understanding? Can we assign a critical function to the temporal distance and identify tradition as a source of truth and meaning, as Gadamer does in “Truth and Method”, and consider them viable solutions to this problem? The following paper tries to answer this question by discussing the temporal distance in its transcendental dimension for the hermeneutical experience and by emphasizing its relation to the tradition defined as an “in between” strangeness and familiarity.

  10. Analyse comparative de pratiques d’animation d’une discussion à visée démocratique et philosophique vues sous l’angle de la temporalité

    OpenAIRE

    Pierrisnard, Christine

    2015-01-01

    Cette étude s’intéresse à la manière dont l’outil « Discussion à Visée Démocratique et Philosophique » (DVDP) est transformé par ses utilisateurs en instrument au fil des situations. L’analyse comparative des pratiques d’un animateur plutôt novice et d’un animateur expert fait apparaître trois éléments cruciaux de représentation temporelle de la situation de DVDP. Un empan temporel large, ancré dans le temps long pour le nécessaire recul de la pensée ; le kaïros, ancré dans l’immédiateté et l...

  11. SAGE CALCULATIONS OF THE TSUNAMI THREAT FROM LA PALMA

    Directory of Open Access Journals (Sweden)

    Galen Gisler

    2006-01-01

    Full Text Available With the LANL multiphysics hydrocode SAGE, we have performed several two-dimensional calculations and one three-dimensional calculation using the full Navier-Stokes equations, of a hypothetical landslide resembling the event posited by Ward and Day (2001, a lateral flank collapse of the Cumbre Vieja Volcano on La Palma that would produce a tsunami. The SAGE code has previously been used to model the Lituya Bay landslide-generated tsunami (Mader & Gittings, 2002, and has also been used to examine tsunami generation by asteroid impacts (Gisler, Weaver, Mader, & Gittings, 2003. This code uses continuous adaptive mesh refinement to focus computing resources where they are needed most, and accurate equations of state for water, air, and rock. We find that while high-amplitude waves are produced that would be highly dangerous to nearby communities (in the Canary Islands, and the shores of Morocco, Spain, and Portugal, the wavelengths and periods of these waves are relatively short, and they will not propagate efficiently over long distances.

  12. Goûts, odeurs et perception relatifs à la qualité de l'eau potable : une perspective spatio-temporelle

    OpenAIRE

    Proulx, François

    2009-01-01

    Cette thèse porte sur l'étude des goûts, odeurs et la perception relative à l'eau potable. Le cas à l'étude est l'eau distribuée dans un réseau d'aqueduc de la Ville de Québec. La thèse est divisée en quatre volets. Le premier volet fait la revue de la problématique des composés responsables des goûts et odeurs en réseau de distribution. Plus spécifiquement, les aspects concernant l'origine de ces composés et leurs analyses physico-chimiques et sensorielles sont abordés. Le second chapitre tr...

  13. Digital Documentation and Archiving Low Cost: la Habana Vieja in Cuba

    Science.gov (United States)

    Morganti, C.; Bartolomei, C.

    2017-11-01

    This article deepens the subject of photo-modelling applied to architecture, on a medium and large scale and it shows all the possibilities to apply the last technologies of augmented reality and virtual reality to the historical and architectural contest of Havana City in Cuba. The context was quite unsuitable to our project because of different and complex reasons. The need to minimize the size of the tools, their weight and cost. Minimize the time of survey and photographic shot on site. To face the difficulties given by the continuing presence of a chaotic influx of people disturbing the work. Not least the difficulty of having a limited number of daily hours available to carry out photographic shots that requires special lighting conditions. This article describes the necessary steps to obtain a 3D dimensional textured model from reality through a photographic set.

  14. Desaparecidos

    Directory of Open Access Journals (Sweden)

    Mario Benedetti

    2012-08-01

    Full Text Available Están en algún sitio / concertados desconcertados / sordos buscándose / buscándonos bloqueados por los signos y las dudas contemplando las verjas de las plazas los timbres de las puertas / las viejas azoteas ordenando sus sueños sus olvidos quizá convalecientes de su muerte privada nadie les ha explicado con certeza si ya se fueron o si no si son pancartas o temblores sobrevivientes o responsos ven pasar árboles y pájaros e ignoran a qué sombra pertenecen cuando empezaron a desaparecer hace t...

  15. Inmoralidad de la prisión preventiva

    OpenAIRE

    Jorge W. Álvarez

    2014-01-01

    El título no me pertenece; por eso lo pongo entre comillas, corno corresponde en rigor gramatical. Lo torné prestado de un precioso trabajo del maestro pisano Francesco Carrara, recién aparecido en una revista de criminología y que manos dilectas pusieron en las mías, conociendo mi vieja pasión por el tema. Y me dije, esto tiene que conocerse por todos los medios posibles para que la voz del viejo maestro resuene con potencia renovada.He aquí, estimado lector, el propósito de esta glosa que h...

  16. Familia y vejez: realidad y perspectiva en Colombia, 2da. Edición

    OpenAIRE

    Echeverri Angel, Ligia

    1994-01-01

    Familia y vejez es el resultado de una investigación para examinar la magnitud del cambio demográfico colombiano y sus implicaciones para la política social y para el sistema de seguridad social del país. En él se describen y analizan los cambios en la estructura poblacional, su evolución y sus efectos sobre las políticas sociales y sobre el sistema de seguridad social y se presentan algunas políticas relacionadas con la población vieja para tener un punto de referencia internacional. El anál...

  17. Gestión gerencial en la selección y contratación de talento humano del Hospital Rafael Ruiz, cantón Pujilí provincia de Cotopaxi 2015

    OpenAIRE

    Duque Torres, Gabriela Paulina

    2016-01-01

    El presente trabajo de investigación está encaminado a mejorar la calidad y calidez del personal del Hospital Rafael Ruiz del Cantón Pujilí, hacia el usuario externo; mediante proceso y subproceso previamente diseñados y que posteriormente se pondrán en práctica para la mejora continua y la gestión de talento humano. A nivel Internacional las viejas definiciones que usaban el término Recurso Humano se basan en la concepción de un hombre como un "sustituible" engranaje más de la maquinaria ...

  18. Cuerpos precarios : La construcción discursiva de los cartoneros, entre la invasión del espacio público y la gestión biopolítica

    OpenAIRE

    Tufró, Manuel; Sanjurjo, Luis M

    2006-01-01

    A comienzos del año 2001 la irrupción en la Ciudad de Buenos Aires de una masa de población dedicada a la recolección de desechos para ser revendidos provocó diversas respuestas desde los medios de comunicación y los discursos oficiales. El objetivo de este trabajo es reconstruir las formas a través de las cuales esos sujetos fueron subsumidos bajo la denominación de “cartoneros”, una palabra vieja que esconde una subjetividad nueva construida a través de prácticas discursivas. Se busca tambi...

  19. Cuerpos precarios : La construcción discursiva de los "cartoneros", entre la invasión del espacio público y la gestión biopolítica

    OpenAIRE

    Tufró, Manuel; Sanjurjo, Luis M

    2010-01-01

    A comienzos del año 2001 la irrupción en la Ciudad de Buenos Aires de una masa de población dedicada a la recolección de desechos para ser revendidos provocó diversas respuestas desde los medios de comunicación y los discursos oficiales. El objetivo de este trabajo es reconstruir las formas a través de las cuales esos sujetos fueron subsumidos bajo la denominación de “cartoneros”, una palabra vieja que esconde una subjetividad nueva construida a través de prácticas discursivas. Se busca tambi...

  20. Una parodia de lo adverso: Buena Vida (delivery.

    Directory of Open Access Journals (Sweden)

    Nicolás Ocaranza

    2006-08-01

    Full Text Available Hernán es un joven empleado en una pequeña empresa de reparto a domicilio (delivery. Mientras recorre los suburbios de la ciudad de Buenos Aires en su vieja motocicleta conoce a Patricia, quien trabaja en una estación de gasolina desde hace un tiempo. Hasta ese momento todo parece confluir en una esperada fórmula de amor de juventud entre un repartidor y su pretendiente. Pero cuando Hernán le ofrece a Patricia el alquiler de una habitación de su hogar la historia toma un destino insospechad...

  1. REPENSANDO LA RELACIÓN ENTRE LOS CAMBIOS SOCIALES Y LOS CAMBIOS LEGALES EN EL BUENOS AIRES DEL SIGLO XIX

    Directory of Open Access Journals (Sweden)

    JEFFREY M. SHUMWAY

    2011-10-01

    Full Text Available Este estudio examina las conexiones entre conflictos familiares encontrados en los tribunales de Buenos Aires del siglo XIX y el mundo de la jurisprudencia. Aunque muchas leyes coloniales seguían vigentes después de la independencia, las actitudes de muchos jueces, abogados y políticos hacia esas leyes cambiaron, lo cual trajo un cambio en la interpretación y aplicación de las leyes viejas que afectó la vida diaria de porteños durante la transición entre la colonia y la nación.

  2. Processus ultra-rapides associés à la dynamique d'émission de la protéine GFP

    Science.gov (United States)

    Didier, P.; Guidoni, L.; Schwalbach, G.; Bigot, J.-Y.

    2002-06-01

    La protéine GFP (Green Fluorescent Protein) est un marqueur très efficace, utilisable en milieu vivant. La spectroscopie femtoseconde est particulièrement bien adaptée pour comprendre les mécanismes d'émission de cette protéine, étant donné la rapidité des processus de transfert mis en jeu. Nous-présentons des résultats sur la dynamique spectro-temporelle d'émission du mutant GFPuv résolue à l'échelle de la centaine de femtosecondes. Une transition Raman à 3300 cm^{-1} ainsi que la dynamique d'etablissement du gain avec un temps caractéristique d'environ 1.5 ps ont été mis en évidence.

  3. 227 Données préliminaires sur la distribution spatio-temporelle des ...

    African Journals Online (AJOL)

    Niamien

    surtout nocturnes [18,19]. La présente étude, la première du genre, est une contribution à une meilleure connaissance de la biologie et de l'écologie des Mégachiroptères afin d'en assurer une gestion rationnelle et durable. Elle vise spécifiquement à identifier les sites de reproduction des chauves-souris à tête de marteau,.

  4. Original Paper Evolution spatiale et temporelle des dégâts du ...

    African Journals Online (AJOL)

    Jacobi, 1912 (Cicadellidae) en comparaison avec la distribution de la pluviométrie au cours des vingt dernières années dans les zones de culture ... for 30 plants), with a peak of attack between the 93rd and 114th days after emergence (DAE), while the period 1993-2007 corresponds to a low pest pressure (0.52 to 2.10 ...

  5. 227 Données préliminaires sur la distribution spatio-temporelle des ...

    African Journals Online (AJOL)

    Niamien

    , in the district of Plateau in. Abidjan ... réservoir de nombreux virus, est soupçonnée d'héberger le virus de la fièvre hémorragique mortelle d'Ebola [17]. Enfin, la chauve-souris à tête de marteau utilise saisonnièrement ce site urbain pour sa.

  6. Distribution of stable isotopes in arid storms . I. Relation between the distribution of isotopic composition in rainfall and in the consequent runoff

    Science.gov (United States)

    Adar, E. M.; Dody, A.; Geyh, M. A.; Yair, A.; Yakirevich, A.; Issar, A. S.

    Temporal distributions of the isotopic composition in arid rain storms and in the associated runoff were investigated in a small arid rocky basin in Israel. Customized rain and runoff samplers provided sequential water samples hermetically sealed in high-density PVC bags. In several storms where the runoff was isotopically depleted, compared with the rainfall, the difference could not be explained by fractionation effects occurring during overland flow. A water-balance study relating the runoff discharge to rainfall over a rocky watershed showed that the entire discharge is produced by a very small segment (1-2mm) of the rain storm. The major objective, therefore, was to provide quantitative relations between segments of rainfall (rain showers and rain spells) and runoff. The time distribution of the composition of stable isotopes (oxygen and hydrogen) was used to quantify the correlation between the rain spell's amount and the consequent runoff. The aim of this work was to (a) utilize the dynamic variations in the isotopic composition in rainfall and runoff and model the magnitude of surface-storage capacity associated with runoff processes of overland flow, and (b) characterize the isotopic composition of the percolating water with respect to the isotopic distribution in rainfall and runoff events. The conceptual model postulates an isotopic mixing of overland flow with water within the depression storage. A transport model was then formulated in order to estimate the physical watershed parameters that control the development of overland flow from a certain rainfall period. Part I (this paper) presents the results and the assessment of the relative depression storage obtained from oxygen-18 and deuterium analyses that lead to the physical and mathematical formulation of a double-component model of kinematic-wave flow and transport, which is presented in Part II (accompanying paper). Résumé Les variations temporelles, en zone aride, de la composition isotopique

  7. The chemically zoned 1949 eruption on La Palma (Canary Islands): Petrologic evolution and magma supply dynamics of a rift zone eruption

    Science.gov (United States)

    Klügel, Andreas; Hoernle, Kaj A.; Schmincke, Hans-Ulrich; White, James D. L.

    2000-03-01

    The 1949 rift zone eruption along the Cumbre Vieja ridge on La Palma involved three eruptive centers, 3 km spaced apart, and was chemically and mineralogically zoned. Duraznero crater erupted tephrite for 14 days and shut down upon the opening of Llano del Banco, a fissure that issued first tephrite and, after 3 days, basanite. Hoyo Negro crater opened 4 days later and erupted basanite, tephrite, and phonotephrite, while Llano del Banco continued to issue basanite. The eruption ended with Duraznero erupting basanite with abundant crustal and mantle xenoliths. The tephrites and basanites from Duraznero and Llano del Banco show narrow compositional ranges and define a bimodal suite. Each batch ascended and evolved separately without significant intermixing, as did the Hoyo Negro basanite, which formed at lower degrees of melting. The magmas fractionated clinopyroxene +olivine±kaersutite±Ti-magnetite at 600-800 MPa and possibly 800-1100 MPa. Abundant reversely zoned phenocrysts reflect mixing with evolved melts at mantle depths. Probably as early as 1936, Hoyo Negro basanite entered the deep rift system at 200-350 MPa. Some shallower pockets of this basanite evolved to phonotephrite through differentiation and assimilation of wall rock. A few months prior to eruption, a mixing event in the mantle may have triggered the final ascent of the magmas. Most of the erupted tephrite and basanite ascended from mantle depths within hours to days without prolonged storage in crustal reservoirs. The Cumbre Vieja rift zone differs from the rift zones of Kilauea volcano (Hawaii) in lacking a summit caldera or a summit reservoir feeding the rift system and in being smaller and less active with most of the rift magma solidifying between eruptions.

  8. Ictiofauna de los humedales del río San Pedro, Balancán, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Alfonso Castillo-Domínguez

    2011-06-01

    Full Text Available Los humedales de San Pedro sostienen redes tróficas del sistema fluvial debido a la alta disponibilidad de hábitats y a sus variaciones espacio-temporales. En esta investigación se estudió la composición, densidad y biomasa de la ictiofauna de los humedales; se capturaron 1 049 organismos de 25 especies, dos son exóticas: Oreochromis niloticus y Parachromis managuense. Con 23 especies capturadas en el sitio I, 17 en el II y 14 en el III. En la época de secas se obtuvo mayor riqueza con 21 especies, lluvias con 17 y cinco en nortes. La mayor densidad se mostró en el sitio II (0.23ind./m², seguido de los sitios I y III (0.12, 0.12ind./m². La mayor biomasa fue en secas (8.30g/m², seguida de lluvias (2.1g/m² y por último nortes (0.01g/m². La mayor densidad se mostró en secas (0.43ind./m² y la mínima en nortes (0.023ind./m². Las especies dominantes en densidad según el diagrama Olmstead-Tukey fueron: Petenia splendida, Vieja heterospila, Vieja synspila, Dorosoma petenense y Astyanax aeneus. Por lo tanto, existieron diferencias significativas en los parámetros ecológicos y ambientales. Al considerar la variación en la riqueza podemos concluir que los humedales del río San Pedro, es un sistema donde la composición de la ictiofauna responde a las fluctuaciones espaciales y temporales.

  9. El concepto de clases en Bourdieu: ¿nuevas palabras para viejas ideas?

    Directory of Open Access Journals (Sweden)

    Graciela Inda

    2005-12-01

    Full Text Available Los trabajos de Pierre Bourdieu han llegado a ocupar en los últimos tiempos un lugar considerable en los ámbitos académicos de las ciencias sociales, al punto de que muchos consideran a Bourdieu uno de los más importantes teóricos de la sociología actual. Los aspectos de su obra que aquí nos interesan son la discusión acerca del concepto de clase social y la crítica al enfoque marxista de las clases, inspirados uno y otro en su teoría de los campos sociales. La pregunta a la que intentaremos dar respuesta es ¿constituyen crítica y propuesta formulaciones realmente originales?

  10. Motivación en el trabajo: viejas teorías, nuevos horizontes.

    Directory of Open Access Journals (Sweden)

    José Navarro-Cid

    2008-01-01

    Full Text Available A pesar de tratarse de uno de los constructos centrales en psicología de lasorganizaciones y del trabajo, la investigación y el desarrollo de nuevas teorías en motivación laboral han disminuido considerablemente en los últimos años. Varios autores atribuyen estasituación al dominio ejercido por las teorías clásicas y plantean la necesidad de desarrollarnuevos enfoques teóricos y nuevas estrategias metodológicas con el fin de revitalizar el campoadecuándolo a las condiciones vigentes en la actualidad. En este trabajo se analizan algunas delas críticas más importantes dirigidas a las teorías de la motivación -principalmente a las teoríasde procesos-, prestando especial atención a aquélla que indica que estas teorías han falladosistemáticamente al analizar los efectos potenciales del tiempo sobre los componentes másimportantes de la teoría. Sobre la base de esta crítica la tesis principal que se sostiene ydefiende en este artículo es que la motivación laboral apenas ha sido estudiada como proceso.Por otra parte, se presentan enfoques alternativos para el estudio de la motivación centradosprincipalmente en el estudio del comportamiento dinámico y complejo del fenómeno.

  11. Farinelli o sobre las derivaciones vocales de esa vieja costumbre de castrar

    Directory of Open Access Journals (Sweden)

    Óscar BOTTASSO

    2016-11-01

    Full Text Available La película representa algunos pasajes de la vida de Carlo Broschi, el célebre Farinelli, un castrato que hizo las delicias de tantísimos amantes de la ópera settecentista. De un reto callejero entre el joven cantante y un trompetista del cual Farinelli emerge triunfante gracias a su voz excepcional, George F. Haendel por ese entonces músico oficial de la corte inglesa y casi como de paso por el lugar le propone viajar a Londres. La oferta es desechada por Farinelli lo cual da lugar a una tirantez en la relación entre ambos, impregnada por antipatías pero al mismo tiempo un dejo de reconocimiento mutuo. En contraposición al escasamente abordado confinamiento de Farinelli en la corte española, en pleno apogeo de su carrera, el film abunda en mostrarnos las variadas visitas de los hermanos Broschi a distintos escenarios europeos, matizado por episodios donde lo seductor de su talante servía de disparador de numerables escenas amorosas finalmente efectivizadas por su hermano Ricardo, anatómicamente intacto. Un hecho que en función de la fisiopatología de un castrado prepuberal parece más sobrerepresentado que veraz.

  12. Las comparaciones interpersonales y la evaluación de estados sociales alternativos

    Directory of Open Access Journals (Sweden)

    Casas , Andrés Fernando

    2003-06-01

    Full Text Available Este ensayo revisa diferentes aproximaciones de la teoría económica para evaluar estados sociales alternativos, a partir de la formulación de una función de bienestar social que admita o niegue comparaciones interpersonales de utilidad. Analiza en especial los puntos de vista de la vieja y la nueva economía del bienestar. Y concluye que con los aportes de Amartya Sen al concepto de bienestar como funcionamiento y al de justicia como capacidad de elegir entre diversos funcionamientos, es posible considerar de manera distinta a los agentes y evaluar opciones alternativas de condiciones de vida.

  13. Memoria, imaginación y sabiduría en Ignacio Gómez de Liaño

    OpenAIRE

    Vinatea Serrano, Eduardo

    2005-01-01

    La obra de Ignacio Gómez de Liaño, elaborada a lo largo de más de treinta años, es sin duda alguna, una filosofía singular que concibe la tarea del filósofo como un conocimiento de orden práctico que; debe llevar a una transformación de la visión del mundo y a una metamorfosis de la personalidad. Esta filosofía práctica tiene como interlocutor principal a Giordano Bruno, hallando en su obra mnemónica el punto de partida para un largo viaje que le ha llevado a transitar por las viejas y casi p...

  14. Les expériences françaises de police de proximité

    OpenAIRE

    Dieu, Françoois

    2010-01-01

    El artículo explora las experiencias francesas del modelo de policía de proximidad. Con base en la división policial francesa entre la gendarmería de corte militar y la policía nacional, institucional civil. El autor da cuenta de las experiencias de vieja data y el desarrollo que ha tenido la policía de proximidad en Francia. Aunque el modelo fue adoptado de manera reciente en ese país (desde finales de los años 90), la policía francesa ha tenido siempre una vocación de cercanía con los vecin...

  15. La mujer caboverdeana en la Argentina, entre tradición y modernidad

    OpenAIRE

    Maffia, Marta M

    2009-01-01

    Para analizar la temática propuesta en este trabajo, nos remitimos en primer término, al estudio de la organización familiar caboverdeana y de la ideología patriarcal que la sustenta en relación a la organización/formación social del archipiélago y su evolución, ya que se trata de una sociedad basada fundamentalmente en la vieja institución "escravócrata". Desarrollamos brevemente cuál fue el perfil de los primeros pobladores de las islas y la repercusión que ello tuvo en la configuración de ...

  16. Las rivalidades futbolísticas y la construcción de la nación. Una comparación entre México y Ecuador

    OpenAIRE

    Roger Magazine; Jacques Ramírez; Samuel Martínez

    2010-01-01

    En este artículo empleamos una comparación entre Ecuador y México para explorar la relación entre la configuración de las rivalidades de los equipos de fútbol a nivel nacional y la distribución espacial de poder entre las regiones y ciudades. En el caso de México, el patrón de rivalidades es inseparable de un fuerte centralismo de poder político y económico, mientras que en el caso de Ecuador, el patrón tiene que ver principalmente con una vieja lucha por la predominancia económica y política...

  17. México y Ecuador: dos distintas formas de construir la nación desde el futbol

    OpenAIRE

    Roger Magazine; Samuel Martínez; Jacques Ramírez

    2011-01-01

    En este artículo empleamos una comparación de Ecuador con México para explorar la relación entre la configuración de las rivalidades entre los equipos de futbol a nivel nacional y la distribución espacial de poder entre las regiones y ciudades. En el caso de México, el patrón de rivalidades es inseparable de un fuerte centralismo de poder político y económico, mientras que en el caso de Ecuador el patrón tiene que ver, principalmente, con una vieja lucha por la predominancia económica y polít...

  18. México y Ecuador: dos distintas formas de construir la nación desde el futbol

    OpenAIRE

    Magazine, Roger; Martínez, Samuel; Ramírez, Jacques

    2011-01-01

    En este artículo empleamos una comparación de Ecuador con México para explorar la relación entre la configuración de las rivalidades entre los equipos de fútbol a nivel nacional y la distribución espacial de poder entre las regiones y ciudades. En el caso de México, el patrón de rivalidades es inseparable de un fuerte centralismo de poder político y económico, mientras que en el caso de Ecuador el patrón tiene que ver, principalmente, con una vieja lucha por la predominancia económica y polít...

  19. Lo sagrado en las sociedades secularizadas

    Directory of Open Access Journals (Sweden)

    González Noriega, Santiago

    1993-10-01

    Full Text Available Not available.

    La potencia tutelar burocrática asume la custodia de una masa amorfa. Frente a ella ha de afirmarse una sociedad civil a partir de núcleos de ciudadanos activos. El motor de esta ciudadanía es la formación de un núcleo básico de creencias -«lo sagrados-e- que desempeña un papel comparable, en cuanto a capacidad de movilización, al de las viejas religiones. Lo sagrado «laico» o «filosófico» apunta a aquello que el hombre puede considerar perdurable y conferir sentido a su existencia.

  20. El reemplazo de mandíbulas en Eunicida

    OpenAIRE

    Paxton, Hannelore

    2006-01-01

    El presente trabajo describe el reemplazo de las mandíbulas maxilares adultas en Diopatra aciculata. Este proceso es similar a la muda en artrópodos, iniciándose con la apólisis o retracción de las células de la epidermis desde la superficie interna de la antigua cutícula, para luego formar una nueva cutícula. El resultado es la formación de una mandíbula nueva bajo la mandíbula antigua. La écdisis o muda de la vieja cutícula se lleva a cabo sin quebrantamiento o daño alguno, según se e...

  1. Tensiones entre una ruralidad productiva y otra residencial: El caso del partido de Exaltación de la Cruz, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    Clara Craviotti

    2007-01-01

    de entrevistas; en el caso analizado, la heterogeneidad del espacio rural persiste, y además se incrementa. La revitalización de la avicultura en el contexto del cambio de las condiciones macro-económicas desafía la expansión de lo usos residenciales del suelo. En conclusión existe la necesidad de nuevas formas de regulación, en términos de instrumentos y de instancias de concertación donde participen diferentes actores, con el fin de encontrar formas menos problemáticas de vinculación entre la "nueva" y la "vieja" ruralidad del partido.

  2. Vérification des contraintes temporelles de bout-en-bout dans le contexte AutoSar

    OpenAIRE

    Monot , Aurélien

    2012-01-01

    These Cifre réalisée avec PSA Peugeot Citroën; The complexity of electronic embedded systems in cars is continuously growing. Hence, mastering the temporal behavior of such systems is paramount in order to ensure the safety and comfort of the passengers. As a consequence, the verification of end-to-end real-time constraints is a major challenge during the design phase of a car. The AUTOSAR software architecture drives us to address the verifica- tion of end-to-end real-time constraints as two...

  3. Physicochemical and biological characterization of the Roble river, Upper Cauca, western Colombia Caracterización fisicoquímica y biológica del río Roble, Alto Cauca, occidente de Colombia

    Directory of Open Access Journals (Sweden)

    Carlos A. García-Alzate

    2010-06-01

    Full Text Available To determine dial and seasonal differences as well as productivity and the trophic status of the lower Roble river, a tributary of the Vieja and upper Cauca rivers of west Colombia, we sampled phytoplankton, zooplankton, fish and macroinvertebrates and recorded physicochemical variables (dissolved oxygen, percent oxygen saturation, pH, conductivity, relative humidity, environmental, water, maximum and minimum temperatures, width, depth, current velocity, substrate, CO2, COD, BOD, total calcium and magnesium hardness, total, dissolved and suspended solids, alkalinity, acidity, chlorine and turbidity during the wet and dry seasons. Most physicochemical variables such as relative humidity, dissolved oxygen and percent oxygen saturation showed low coefficients of variation, except for oxygen deficit. The Shannon-Wiener diversity index, equity and dominance had low values around 0.5. We recorded eight orders, 28 families and 58 genera of macroinvertebrates, three divisions, five orders and 45 genera of phytoplankton, two divisions and six genera of zooplankton and 19 species of fishes. This river has an allochthonous-heterotrophic trophic state and productivity is oligotrophic but with a tendency to eutrophication.Para determinar las diferencias diarias y estaciónales, así como la productividad y el estado trófico del río Roble, un afluente de la Vieja, alto Cauca al occidente de Colombia, tomamos muestras de fitoplancton, zooplancton, peces y macroinvertebrados y registramos variables físico-químicas (oxígeno disuelto, porcentaje de saturación de oxígeno, pH, conductividad, humedad relativa, temperaturas ambiente, del agua, máximas y mínimas, ancho, profundidad, velocidad de la corriente, sustrato, CO2, DQO, DBO5, dureza total, dureza calcica y durezas magnesicas, sólidos totales, disueltos y suspendidos, alcalinidad , acidez, cloruros y turbidez durante sequía y lluvias. La mayoría de las variables físico-químicas tales como la

  4. Atención temprana comunitaria en niños con retardo en el neurodesarrollo

    Directory of Open Access Journals (Sweden)

    Roberto Moreno Mora

    Full Text Available Objetivo: determinar la evolución de los pacientes con retardo en el neurodesarrollo, atendidos en el Programa Comunitario de Atención Temprana, del municipio Habana Vieja. Métodos: se realizó una investigación prospectiva de evaluación del Programa Comunitario de Atención Temprana en la Habana Vieja entre 1998 y 2008. El universo fue de 170 pacientes con retardo del neurodesarrollo, remitidos por su médico de familia, y evaluados por un equipo interdisciplinario mediante examen clínico y por escalas estandarizadas. Posterior a cada evaluación se aplicó un programa de estimulación individual ejecutada por rehabilitadores y defectólogos de cada policlínico y en el hogar. Se utilizó como estadígrafo el resumen frecuencial, porcentajes y el test de chi cuadrado. Resultados: al inicio los pacientes obtuvieron fundamentalmente evaluación de deficiente, tanto en la área mental (55,29 % como en la área motora (57,64 %. En la evaluación final, se comprobó el ascenso significativo de los porcentajes en la evaluación normal (mental: X²= 58,50; p= 0,00001; motor: X²= 73,06; p= 0,00001. Los pacientes afectados asociados a afecciones perinatales tuvieron una evolución satisfactoria asociados a las categorías superadas (24,75 % y favorables (43,78 %. Resultó significativo (X²= 18,90; p= 0,00001 que los pacientes con antecedente de sepsis neonatal evolucionaron desfavorablemente. La tercera parte de los pacientes con bajo peso al nacer evolucionó de manera estática y agravada (19,23/16,00 %. Conclusiones: los resultados del programa comunitario de atención temprana demuestran que se alcanzó mejoría en el neurodesarrollo en la mayoría de los pacientes.

  5. Guanacaste Geothermal Project. Technical prefeasibility report. Annex F. Heat flow. [Las Hornillas, Las Pailas, and Boriaguen

    Energy Technology Data Exchange (ETDEWEB)

    1976-12-01

    This report is the sixth of six annexes (designated A through F) to the Summary Report on the First Phase of the Guanacaste Geothermal Project. The studies covered an area of 500 km/sup 2/ on the SW flanks of the Rincon de la Vieja and Miravalles volcanoes of the Guanacaste Volcanic Range in NW Costa Rica, and were aimed at locating zones of high geothermal gradient, and reconstruction of the stratigraphic column. The three areas that have the highest geothermal resource potential were investigated for heat flow. They are the zones of Las Hornillas on the slopes of the Miravalles volcano, Las Pailas on the slopes of the Rincon de la Vieja volcano and, to a lesser extent, the zone of Borinquen. A total of 2500 meters were drilled in 35 thermal gradient wells. Of these, 27 wells were drilled in the Las Hornillas zone, 7 in Las Pailas, and only 1 in Borinquen. In the Las Hornillas zone of the Miravalles volcano, the temperature-vs.-depth profiles exhibit a higher slope in areas near the fumaroles, decreasing toward the interior of the caldera. This determines a zone of high slope curves coinciding with the 1000/sup 0/C/km gradient contour. In the most significant well, temperatures above 150/sup 0/C were recorded. Since this location was selected on the basis of the results of all the other studies, it is felt that a fair knowledge of the thermal flow pattern of this area has been obtained. Drilling of an additional gradient well about 200 m in depth, located on the 1000/sup 0/C/km contour, would adequately complement the information on this zone. The shallow gradient wells did not detect any significant result when located away from the zones of fumarole activity. (JGB)

  6. Intento suicida y funcionamiento familiar

    Directory of Open Access Journals (Sweden)

    Wilfredo Guibert Reyes

    2001-10-01

    Full Text Available Se realizó un estudio analítico retrospectivo de corte transversal del tipo caso control con el objetivo de caracterizar el funcionamiento familiar diferencial de los individuos que realizaron intentos suicida en un área de salud de la Habana Vieja, durante los meses de enero a mayo de 2000. La muestra estuvo conformada por 62 individuos y sus respectivas familias, 31 del grupo estudio e igual cantidad de controles. Se les aplicó la entrevista familiar semiestructurada circular, la prueba de funcionamiento familiar FF-SIL y se observaron sus interacciones familiares. Se encontró que el funcionamiento familiar (FF en los individuos que realizaron intento suicida es predominantemente disfuncional, que las características diferenciales del funcionamiento familiar en las suicidas fueron la poca adaptabilidad (67,7 %, la baja cohesión (70,9 %, y la desarmonía (87,1 % y que en las familias de los suicidas predominaron significativamente todos los factores familiares de riesgo esenciales que predisponen al suicidioA case-control crosswise retrospective and analytical study was made from January to May, 2000 to characterize the family performance in individual who attempted to commit suicide in a health area located in Habana Vieja municipality. The sample was composed by 62 subjects and their respective families, 31 of them belonged to the study group and the rest to the control group. The circular semi-structured family interview and the family performance test were applied whereas family interactions were observed. It was found that family performance in individuals with attempted suicides was predominantly dysfunctional; the differential characteristics of family performance in suicidal persons were low adaptability(67.7%, low cohesion (70.9% and lack of harmony (87.1% and that all the essential family risk factors that are conductive to suicide were significantly present in the families of the suicides

  7. El ingreso en el hogar: dificultades para la ejecución del proceso de atención de enfermería en un área de salud

    Directory of Open Access Journals (Sweden)

    Rolando José Garrido García

    2003-02-01

    Full Text Available Con el propósito de identificar las dificultades gerenciales que presenta el proceso de atención de enfermería (PAE en el procedimiento de Ingreso en el Hogar en el área de salud "Ángel Arturo Aballí", del municipio Habana Vieja, se realizó un estudio en el mes de marzo del año 2001, de tipo descriptivo cualitativo, utilizando como universo el total del personal de enfermería que trabaja en los consultorios del área. Los resultados fundamentales plantean dificultades con recursos, como la escasez de material de cura, la falta de medicamentos e instrumental, así como dificultades con el tiempo disponible para la ejecución del PAE, por la interferencia con otras tareas asignadas de forma urgente y no planificadas. Finalmente se precisó que el personal de enfermería del área conoce los lineamientos que utilizan los médicos para decidir el ingreso domiciliario.With the objective of identifying the general difficulties found in the process of nursing care(PNC provided in the home care service "Angel Arturo Aballí" located in Habana Vieja municipality, a descriptive and qualitative study was conducted on March, 2001 in which the universe of study was the nursing staff working in the various physician´s medical offices in the area. The fundamental results achieved were: shortage of material resources such as cure material, lack of medicines and medical implements, as well as difficulties in devoting time to the performance of PNC since nurses have to carry out other assigned tasks that are often urgent and unplanned. Finally, the paper states that the nursing staff of the area has knowledge about the guidelines followed by physicians to decide upon the home care option.

  8. Caractérisation expérimentale et modélisation numérique des propriétés spectroscopiques d'absorbants saturables pour le déclenchement passif de laser verre erbium

    Science.gov (United States)

    Girard, S.; Shcherbitsky, V.; Fromager, M.; Aït Ameur, K.; Moncorgé, R.; Ferrand, B.; Montagne, J.

    2002-06-01

    Une comparaison entre différents absorbants saturables (LMA, MALO, ZnS et ZnSe dopés Col^+ et ZnSe dopé Cr^{2+}) utilisables comme interrupteur optique passif pour déclencher les sources lasers verre erbium à 1.53 μm est présentée. Des expériences de saturation en simple passage sont interprétées en tenant compte de la distribution spatiale et temporelle du laser de pompe. Cette technique permet d'obtenir des sections efficaces de saturation effectives fiables et indépendantes des conditions de mesure sans introduire artificiellement d'absorption dans l'état excité qui, en principe, n'existe pas dans ce type de système contrairement aux études effectuées jusqu'ici sur ces matériaux.

  9. El papel de Rusia en el conflicto de Ucrania: ¿La guerra híbrida de las grandes potencias?

    Directory of Open Access Journals (Sweden)

    Josep Baqués

    2015-06-01

    Full Text Available El conflicto de Ucrania dista mucho de ser una guerra convencional, pero tampoco se limita a ser una guerra de guerrillas a la vieja usanza. Este artículo explora la posibilidad de que se trate de una guerra híbrida. Para ello se tienen en cuenta tanto criterios conceptuales, como el contexto del conflicto o los medios que Rusia pone a disposición de la causa de los rebeldes. La novedad reside en que en este caso el Estado (relativamente más fuerte de los contendientes es el que emplea la guerra híbrida, logrando con ello frustrar las expectativas iniciales del gobierno de Kiev.

  10. Bibliofilia. De las notas sobre El Quijote y otras consideraciones

    Directory of Open Access Journals (Sweden)

    Nelson Nicholls Santacoloma

    1966-03-01

    Full Text Available Después de considerar cuan grande es el número de tomos incompletos que se encuentran por ahí, a cada uno de los cuales cabe muy bien la denominación de libro expósito según lo dicho a nosotros por don Luis Villagómez en pasada oportunidad, no hemos resistido la tentación de averiguar con el devoto bibliófilo por la existencia de otros medios más, de aquellos que él propone para eliminar tan grave calamidad como es la de no poder reunir una obra completa especialmente cuando se trata de alguna vieja e inhallable edición.

  11. Cuento: El último viernes de una guerra

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    Policarpo Varón

    1969-03-01

    Full Text Available La tarde en que Rosario Figueroa vda. de Rengifo murió, su vieja casa se llenó de gente falsamente condolida. Alguien recordó que la viuda formaba parte de algo que era como una institución. Al entierro la acompañaron no más de diez personas. Dos hijos varones con sus mujeres, una hija única con su marido, tres o cuatro nietos y un viejo que trabajosamente anduvo detrás del cortejo gesticulando y hablando solo y deteniéndose a veces para mirar algo a su espalda y limpiarse las lágrimas y el sudor de la cara y el cuello con un pañuelo floriado.

  12. ¿TECNOLOGÍAS PARA POBRES O TECNOLOGÍAS POBRES? POSCOLONIALISMO, DESARROLLO Y TECNOLOGÍA EN INDIA

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    Kavita Philip

    2012-01-01

    Full Text Available Desde una perspectiva postcolonial, este trabajo analiza el lugar alcanzado por la India durante el siglo XX, redefiniendo su papel en el escenario mundial como una fuerza económica moderna a través de tecnología de la información. Las representaciones populares de la ciencia, los medios de comunicación y la tecnología, sirven para entender los traslapes entre la cultura, la historia y la economía, y los conjuntos mutuamente constitutivos entre la subjetividad y la tecnología. Se propone que las viejas políticas de casta, clase, género e identidad nacional son reimaginadas en la "nueva" era digital.

  13. ¿Tecnologías para pobres o tecnologías pobres? Poscolonialismo, desarrollo y tecnología en india

    Directory of Open Access Journals (Sweden)

    Kavita Philip

    2012-04-01

    Full Text Available Desde una perspectiva postcolonial, este trabajo analiza el lugar alcanzado por la India durante el siglo XX, redefiniendo su papel en el escenario mundial como una fuerza económica moderna a través de tecnología de la información. Las representaciones populares de la ciencia, los medios de comunicación y la tecnología, sirven para entender los traslapes entre la cultura, la historia y la economía, y los conjuntos mutuamente constitutivos entre la subjetividad y la tecnología. Se propone que las viejas políticas de casta, clase, género e identidad nacional son reimaginadas en la “nueva” era digital.

  14. Nuevas perspectivas en el manejo terapéutico de la enfermedad de chagas

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    Alfonso J Rodríguez-Morales

    2005-04-01

    Full Text Available Desde hace un par de décadas y más aun en los últimos cinco años, se ha desarrollado un gran número de estudios que demuestran la actividad tripanocida de diversas drogas, algunas nuevas, muchas viejas, lo cual aunado al conocimiento acerca de la persistencia parasitaria de Trypanosoma cruzi en tejido miocárdico, entre otros, durante las fases crónicas de la enfermedad, permiten hacer patente que existe un nuevo paradigma, nuevas aproximacio-nes al manejo terapéutico del paciente con enfermedad de Chagas. En el presente artículo se revisan las principales bases que sustentan dichas perspectivas terapéuticas en la tripanosomiasis americana.

  15. La carrière du spectateur Careers as members of an audience. A relational approach to times of reception

    Directory of Open Access Journals (Sweden)

    Aurélien Djakouane

    2011-12-01

    Full Text Available Cet article place l’analyse des pratiques culturelles dans une perspective temporelle afin de repérer les moments-clés qui orientent les trajectoires de spectateurs tout au long de la vie, au-delà des mécanismes de légitimité culturelle et de reproduction sociale. Consacré au spectacle vivant (théâtre, musique et danse, cet article s’appuie sur plusieurs enquêtes qualitatives et quantitatives qui dessinent les contours des « carrières de spectateurs ». A la lumière de ces parcours, les étapes du cycle de vie et les sociabilités deviennent les principales sources de variation et d’invention des temps de la réception. Cette dimension relationnelle de la socialisation culturelle invite à ne plus considérer uniquement ces pratiques comme des consommations mais bien comme des actes de réception, négociés dans un espace social, culturel et générationnel métissé et fluctuant.This paper puts the analysis of cultural practices in a temporal perspective. Its aim is to locate the key moments of the members of the audience’s life, when they turn towards one path or the other, beyond the mechanisms of cultural legitimacy or social reproduction. It relies on several qualitative and quantitative surveys on outings to live shows (theatre, music and dance. Whether it be the first time or continous practices, theses studies outline « careers as an audience » in which the steps of the life course and social intercourse are the main sources of variation and invention of times of reception. This relationship aspect of cultural socialization leads us to consider these practices not only as consumption but as acts of reception, negotiated in a social space that’s both cultural and generational, diverse and changing.

  16. Las viejas y las nuevas formas de participación sociopolítica

    Directory of Open Access Journals (Sweden)

    José Guillermo Fouce

    2008-01-01

    Full Text Available En el presente artículo, se plantea esquemática y brevemente la evolución que está sufriendo el ámbito de la participación sociopolítica comparando los principales ejes considerados por el autor de la participación en el pasado con los ejes de la nueva participación o de la participación en la actualidad. Estos ejes o principios son extraídos de una amplia revisión de la literatura desarrollada en el marco de la tesis doctoral del autor y se establecen como posibles hipótesis explicativas de la evolución de la participación en nuestras sociedades contemporáneas.

  17. Les temps sexués de l’activité : la temporalité au principe du genre ? Gendered working times: Temporality at the inception of Gender?

    Directory of Open Access Journals (Sweden)

    Marc Bessin

    2009-09-01

    Full Text Available L’article présente la problématique de ce dossier sur les temps sexués de l’activité. Il s’agit d’aborder l’activité − dans une acception large du travail, rémunéré ou non, plus ou moins visible, dans son articulation avec l’ensemble des sphères de la vie − comme miroir de l’imbrication du genre et des temporalités. Deux postures y contribuent. La plus classique consiste en une sociographie de la division sexuelle du travail où le temps sert à mesurer les inégalités. Il faut la compléter par une deuxième qui interroge les catégories temporelles : on montre ainsi que les temporalités sont au principe du système de genre. Ici le temps, appréhendé dans sa diversité et notamment ses dimensions qualitatives, résulte des pratiques et est posé comme producteur de rapports de pouvoir. La domination masculine repose sur la construction du rapport au temps : la naturalisation des compétences dites féminines s’appuie sur une temporalité basée sur le rapport à l’autre et l’engagement dans la durée. Les perspectives théoriques autour du care et de la présence sociale permettent de montrer les implications morales de l’engagement pour autrui dans ses dimensions temporelles (sens de l’anticipation, disponibilité à l’autre, ancrage dans la durée, temporalisation. Les auteurs exposent ensuite la manière dont chacune des contributions du numéro alimente cette discussion.We introduce this issue on the gendered times of work, broadly understood – i.e. paid or unpaid, and more or less visible – which, in conjunction with the other spheres of life, mirror the intricate interplay of Gender and Temporality. Two positions are highlighted. The more classical one is a Sociographics of the gendered division of labour in which time serves to measure existing inequalities. Complementary to it is a second posture that questions temporal categories: the confrontation shows that temporality is at the

  18. Comentario del Libro Viaje a Centroamérica de Wilhem Marr.

    Directory of Open Access Journals (Sweden)

    Peggy Von Meyer

    2011-08-01

    Full Text Available Debemos al empeño del Dr. Juan Carlos Solórzano el que la Editorial de la Universidad de Costa Rica haya efectuado la edición íntegra de Viaje a Centroamérica, del connotado escritor alemán decimonónico Wilhem Marr, con un estudio preliminar con la magnífica traducción filológica efectuada por Irene Reinhold, y numerosas ilustraciones de la época. Se constituye así esta obra en un merecido homenaje a un pensador sagaz, una brillante conciencia crítica, un relator amenísimo, que para la comunidad hispanohablante ha permanecido en el anonimato por más de cien años. Continúa, además, la antiquísima tradición de la narrativa de viajes, que se remonta en Occidente a raíces de vieja prosapia, desde Pausanias y Herodoto, a los textos bíblicos, por mencionar solo algunos. Desde entonces, la literatura de viajes quedó asociada a la aventura de la expansión occidental, siguiendo lo que Ottmar Ette llama “los caminos del deseo”.

  19. Les nuits de Shanghaï

    Directory of Open Access Journals (Sweden)

    Wenbo Hu

    2017-03-01

    Full Text Available Cet article vise à repérer les pôles d’animation nocturnes dans la métropole de Shanghaï à partir de données participatives issues des réseaux numériques sociaux. Les données spatio-temporelles sont collectées sur SINA Micro-blog, le « Facebook » chinois sur lequel des individus partagent leur expérience vécue et personnelle. Le traitement de ces données géo-localisées fournit un moyen de repérage et d’analyse des polarités urbaines centripètes dans l’espace et dans le temps. Des immersions complémentaires dans ces secteurs urbains permettent de vérifier et de mieux appréhender les dynamiques de la vie nocturne et les comportements spatio-temporels des individus.

  20. Niveaux d'étude du cerveau, et sagesse physique

    Science.gov (United States)

    Toulouse, Gérard

    1993-02-01

    The brain is a complex spatio-temporal affair. Several brain theories propose the definition of three superposed levels of study. But physics, though the experience of condensed matter physics, suggests that it is unwise to enforce onto brain theories a unified hierarchical scheme, the inspiration for which seems to come from the realm of sub-molecular physics. Le cerveau est une affaire spatio-temporelle complexe. Plusieurs théories du cerveau proposent de définir trois niveaux d'études superposés. Mais la physique, à travers l'expérience de la physique de la matière condensée, suggère qu'il n'est pas sage d'imposer sur les théories du cerveau un schéma hiérarchique unifié, dont l'inspiration semble provenir du domaine de la physique sub-moléculaire.

  1. La magia de la comunicación

    Directory of Open Access Journals (Sweden)

    Kintto Lucas

    2015-01-01

    Full Text Available El autor realiza una entrevista a Gilberto Gil, mito viviente de la música brasileña y ahora concejal. En sus shows logra una relación casi mágica con el público y algunos de sus discos han vendido más de dos millones de copias.El Pelourinho-Ciudad Vieja de Salvador da Bahía, atrapa con sus construcciones del siglo XVI. Todo está aquí: el folclore, los talleres de artesanía, las iglesias, los grupos de capoeira, la humildad y la magia de los bahianos que parecen haber saltado de los libros de Jorge Amado,a una cuadra de donde se filmó Doña Flor y sus dos maridos.

  2. Lytological characterization and hydrothermal alteration Infiernillo porphyry, provincia Mendoza, Argentina

    International Nuclear Information System (INIS)

    Gomez, A.; Rubinstein, N.; Kleiman, L.. E.mail: kleiman@cae.cnea.gov.ar

    2007-01-01

    El Infiernillo porphyry copper and Mo deposit, in southern Mendoza, Argentina is hosted by ignimbrites of the Cochico Group (lower Permian). The alteration zone consists of a small central quartz neck with appreciable hematite surrounded by an intense quartz-injected zone with local pervasive potassic alteration. Outwards, there is a well-developed phyllic halo with intense bleaching which consists of pervasive and vein-type silicification, sericitization and pyritization. In the outer part of the alteration zone, small polymetallic veins with pyrite, arsenopyrite, galena and minor, chalcopyrite, sphalerite and electrum in quartz gangue crop out. New field, petro-mineralogic and geochemical data confirmed that the host rocks are equivalent to the dacitic and rhyodacitic ignimbrites of the Toba Vieja Gorda Member (Yacimiento Los Reyunos Formation, Cochico Group)

  3. La epidemiología ocupacional como herramienta básica para la salud de los trabajadores Occupational epidemiology as a basic tool for workers' health

    Directory of Open Access Journals (Sweden)

    Caristina Robaina Aguirre

    2006-06-01

    Full Text Available Se realizó un pequeño bosquejo del desarrollo de la Epidemiología como ciencia y su importancia en salud pública en general. Se transita por las definiciones de vieja y nueva epidemiología, de enfermedades crónicas, transmisibles y no transmisibles, del concepto de epidemiología social, etc. para posteriormente hablar de la importancia de la Epidemiología Ocupacional en la Salud PúblicaA review of the development of Epidemiology as a science, and its significance in public health in general, was made. The old and new definitions of epidemiology, of chronic, transmissible and non-transmissible diseases, of social epidemiology concept, etc., are analysed to further deal with the importance of Occupational Epidemiology in Public Health.

  4. Retorno a Marx

    Directory of Open Access Journals (Sweden)

    Roy Alfaro Vargas

    2016-01-01

    Full Text Available Henri Lefèbvre analiza aquí la etiqueta de materialismo dialéctico, en relación con los imperativos derivados del pensamiento de Marx. Es decir, Lefèbvre cuestiona la noción de materialismo dialéctico como un resabio de la vieja discusión entre materialismo e idealismo, con el fin de superar tal división a través de la noción de praxis. Lefèbvre define, entonces, el marxismo y el pensamiento dialéctico como la superación (Aufhebung de la filosofía, en cuanto proceso de realización de ella misma, el cual se fundamenta en la negatividad de la relación entre sujeto y objeto.

  5. Bolsas de plástico y lazos sociales. Notas de campo sobre reciclaje

    Directory of Open Access Journals (Sweden)

    Cecilia Montero Mórtola

    2011-01-01

    Full Text Available La protección del medio ambiente no sólo consiste en grandes campañas mediáticas y políticas. Existe una ciudadanía silenciosa que ha empezado a modificar actitudes, rescatar viejas costumbres y adaptarlas a distintos espacios de este mundo globalizado (domésticos, informales.... Un cambio cultural donde la reutilización de objetos desechados, a través de actividades artesanales y educativas, sirve para poner en marcha una serie de vínculos y lazos sociales. Estudiando el reciclaje de bolsas de plástico, la antropología puede restituir esos curiosos procesos organizativos, prácticas sociales sólo visibles a partir de un trabajo de campo continuado.

  6. Dynamique spatio-temporelle de Planococcus ficus (Signoret, 1875 dans les vignobles de la Mitidja (Algeria

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    Fatima Zohra Bissaad

    2017-06-01

    Full Text Available Bissaad, F. Bounaceur, F. and Doumandji-Mitichet B. 2017. Spatio-temporal dynamics of Planococcus ficus (Signoret, 1875 in the vineyards of Mitidja (Algeria. Lebanese Science Journal. 18(1: 26-46. Until now, the research undertaken in Algeria on controlling Planococcus ficus or mealybug, a pest responsible of high level of damages on vines, were very limited. A study on the spatiotemporal dynamics of the pest was conducted for three years in the vineyards of the Western Mitidja in Algeria. The weekly sampling of leaves and clusters were carried out from 2006 to 2008, on wine and table grapes. A high contamination by P. ficus was observed in summer and the beginning of autumn depending on the varieties and years. The monitoring system showed the development of 5 to 6 successive peaks on leaves, and 3 to 4 successive peaks on grape clusters.

  7. Nuevos mayores, viejas brechas: TIC, desigualdad y bienestar en la tercera edad en Italia

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    Piermarco Aroldi

    2015-07-01

    Full Text Available Italia parece tener un retraso de unos diez años en comparación con otros países más digitalizados, tanto en el uso de las TIC por las personas mayores como en el estudio de la relación entre las TIC y los mayores de 65 años. Por ello, se hace urgente examinar los factores que influyen en la adopción de las tecnologías por los mayores y la capacidad real de estas para proporcionar recursos culturales e interactivos, útiles para mejorar el envejecimiento activo y mejorar su calidad de vida en salud y vida social. Este trabajo describe los principales resultados de un estudio que involucró a 900 italianos de 65 a 74 años, en el marco de un proyecto nacional de investigación sobre el envejecimiento activo. El estudio indaga en las características sociodemográficas de los mayores italianos usuarios de Internet y en los factores que influyen en el uso de las TIC. Los resultados evidencian que existe una fuerte brecha digital entre los mayores, influenciada por el contexto económico y cultural. En cuanto al envejecimiento activo, se demuestra que los mayores altamente digitales presentan una mejor vida saludable en su envejecimiento, sin poderse concluir que el uso de las TIC garantice la inclusión y participación.

  8. Viejas y nuevas geografías en el ex Vaso de Texcoco, México

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    Maribel Espinoza Castillo

    2012-02-01

    Full Text Available La construcción social del espacio se encuentra inserta en un nuevo escenario geográfico en el cual el análisis local toma una nueva dimensión. La condición de globalidad adquirida por los procesos productivos, relaciones sociales y expresiones culturales, pese a homogeneizar procesos, se hace muy específica a nivel de países y de comunidades. En la construcción social del espacio en el ex lago de Texcoco desde mediados de los cuarenta, esfuerzos, obras, vida cotidiana y deseos de progreso, fueron gran parte de los elementos que impulsaron la construcción de las viviendas y la gestión e introducción de servicios públicos. A partir de la década de los ochenta, la regularización del suelo, la consolidación de la vivienda, la aparición de equipamientos comerciales y los nuevos modelos culturales, favorecieron la consolidación del área, sus relaciones con el exterior y ampliaron las escalas geográficas.

  9. Rutas turísticas a partir del patrimonio industrial. Nuevos productos en viejas estructuras

    Directory of Open Access Journals (Sweden)

    Guillermina Fernández

    2004-11-01

    Full Text Available La actividad industrial de cualquier época tiene gran importancia para el hombre, pues formando parte de la economía permite dotar de identidad a una sociedad. El presente artículo tiene como objetivo presentar el patrimonio industrial como recurso para organizar rutas turísticas que permitan en algunos casos recuperar espacios industriales abandonados o usar establecimientos industriales en funcionamiento, pero que pueden incorporarse a este tipo de desarrollo turístico. La creación de rutas turísticas puede permitir la reactivación de las economías locales, por constituirse en definitiva en una nueva actividad económica. Para lograr esto es necesario articular el sector público y el privado. De esta forma es posible, a través de la creación de rutas turísticas del patrimonio industrial, generar un desarrollo turístico local sustentable. Dentro de esta alternativa de desarrollo turístico que muestran los autores, la educación cumple un papel importante y es un aspecto estratégico para el logro de una dinámica jalonadora de beneficios socioeconómicos y culturales para las comunidades y, por ende, del desarrollo integral de éstas.

  10. Guanacaste Geothermal Project. Technical prefeasibility report. Annex C. Electric resistivity

    Energy Technology Data Exchange (ETDEWEB)

    1976-12-01

    This report is the third of six annexes to the Summary Report on the First Phase of the Guanacaste Geothermal Project. The studies covered an area of 500 km/sup 2/ on the SW flanks of the Rincon de la Vieja and Miravalles volcanoes of the Guanacaste Volcanic Range in NW Costa Rica, and were aimed at locating zones of high geothermal gradient, and reconstruction of the stratigraphic column. The formations in the area under study can be grouped into six resistivity ranges, varying from less than 5 to more than 200 ohm-meters. Values from 200 to as high as 30,000 ohm-meters generally correspond to fractured and porous lavas, their fracturing and porosity, as well as their drainability, increasing with resistivity. The values above 100 ohm-meters were recorded in zones of recent lava flows, in spurs of the volcanoes Rincon de la Vieja and Santa Maria, and in the slopes of the Miravalles volcano, and correspond to shallow formations (maximum depths of 150 meters) which may constitute recharge zones for the underground aquifiers. The values in the 100 to 200 ohm-meter range were generally recorded directly under layers constituted by drained, porous lavas, or under shallow layers where no recent lavas are present. The third group comprises materials with resistivities in the 25 to 100 ohm-meter range, occurring at two different depth levels: a deep one (more than 1000 meters) and a shallow one (less than 400 meters). Resistivities less than 25 ohm-meters were recorded at depths of 250 meters and more, and may correspond to material typical of the Aguacate formation, which probably constitutes the reservoir rock of the geothermal fluids. In order to locate the zones of most geothermal interest, this range was classified into the three remaining of the six groups, viz 10 to 25, 5 to 10, and less than 5 ohm-meters, the last group appearing to be that of greatest geothermal potential.

  11. Effect of land use on the density of nitrifying and denitrifying bacteria in the Colombian Coffee Region

    Directory of Open Access Journals (Sweden)

    Vallejo Quintero Victoria Eugenia

    2011-12-01

    Full Text Available

    Soil microbial communities involved in the cycling of nitrogen (N are essential to maintaining and improving soil fertility, productivity and functionality of natural and agricultural ecosystems. However, some compounds generated during the metabolic processes performed by nitrifying (NB and denitrifying (DB bacteria are associated with the production of greenhouse gases, groundwater pollution and acidification. Therefore, the study of these bacteria is essential for economic and environmental sustainability. This study evaluated the effect of different land uses in two river basins (La Vieja and Otun on NB and DB densities. Two sampling events (SE were conducted by selecting the most representative land uses. Physicochemical (T °, pH, moisture and nitrate and microbiological properties (NB and DB densities were evaluated. In both SEs, significantly higher densities of NB and DB were observed in the land uses: pasture, guadua (DB only and unshaded coffee (La Vieja and onion (Otun. These land uses, excluding guadua, are dependent on nitrogen fertilizers, which together with the activities of grazing livestock on pastures may lead to greater availability of substrates for the NB. The use of agricultural machinery and overgrazing in pasture and onion uses generate compacted soil and other physical disturbances, encouraging the growth of DB. Forests had the lowest densities of NB and DB possibly due to a reduced availability of N and the releasing of allelopathic compounds from certain plants. Finally, the densities of ammonium-oxidizing bacteria had the greatest differences between the land uses evaluated, demonstrating its high sensitivity to agricultural management practices and livestock. We suggest that changes in the abundance of this community could

  12. Etude de la mesure du paramètre alpha dans le cadre de la violation de la symétrie CP à l'aide du canal $B_{d}^{0} \\to \\pi^{+} \\pi^{-}\\pi^{0}$ dans l'expérience LHCb

    CERN Document Server

    Robert, Arnaud

    2005-01-01

    L'analyse temporelle du correlogramme de Dalitz du canal a trois corps Bd en pi+ pi- pi0 conduit a l'extraction de l'un des parametres definissant la violation de la symetrie CP dans le Modele Standard Electrofaible, l'angle alpha, exempte d'ambiguites discretes entre 0 et pi. Elle permet, entre autres, d'acceder independamment aux valeurs des principaux parametres QCD regissant la desintegration. La contrepartie experimentale repose cependant sur une statistique de signal suffisamment pure et importante et une maitrise precise de la phenomenologie associee. Combines a un rapport d'embranchement de l'ordre de 2.10^{-5}, ces deux arguments justifient a eux seuls le caractere non trivial d'une telle analyse dans l'environnement hadronique de l'experience dediee LHCb. A partir de la reponse simulee du detecteur, et en particulier des performances du calorimetre electromagnetique, cette these montre l'interet essentiel de la reconstruction specifique des pions neutres tres energiques et la necessite d'introduire ...

  13. Elementos básicos para la reflexión de la propiedad intelectual en el contexto digital

    Directory of Open Access Journals (Sweden)

    Jhonny Antonio Pabón Cadavid

    2009-01-01

    Full Text Available El entorno digital ha revivido una vieja discusión relacionada con la conveniencia de un conocimiento de apropiación privada frente a uno de acceso abierto o libre. Las reflexiones sobre el tema de la propiedad intelectual se han construido a partir de los cambios tecnológicos relacionados con la información. Con las tic se han generado transformaciones culturales vinculadas con la construcción de una sociedad red. Este artículo analiza algunos puntos de relación entre los derechos de autor que se confrontan con el acceso a la cultura y a la información, los riesgos que afrontan los titulares de los derechos y ciertas implicaciones en el camino hacia la sociedad del conocimiento y del aprendizaje.

  14. Cerrando la brecha entre nativos e inmigrantes digitales a través de las competencias informáticas e informacionales

    Directory of Open Access Journals (Sweden)

    Ariel Sánchez Espinoza

    2013-10-01

    Full Text Available En este texto hacemos una reflexión acerca de las diferencias entre los llamados “nativos” e “inmigrantes digitales”, y aportamos datos que permiten identificar si un grupo tiene mayores ventajas sobre otro en relación con la enseñanza y el aprendizaje en esta era digital. Proponemos la adquisición y el desarrollo de competencias informáticas e informacionales en ambos grupos como estrategia para reducir la brecha digital “blanda” que priva en el sistema educativo e invitamos a resolver las interrogantes: ¿los docentes estamos preparados para enseñar las nuevas asignaturas y las viejas materias, pero con nuevas formas?, y ¿los alumnos contamos con las tradicionales competencias informacionales requeridas para resolver nuevos problemas y tomar decisiones en escenarios futuros?

  15. Prédiction de l'évolution spatio-temporelle du fer à l'exutoire d'un ...

    African Journals Online (AJOL)

    Thus, the use of this hybrid model is satisfactory. It can be used for any studies to rational management, protection and sustainable development of the Sassandra River and the Atlantic Ocean near to Sassandra outfall. © 2016 International Formulae Group. All rights reserved. Keywords: Atlantic Ocean, metal pollution, ...

  16. Prédiction de l'évolution spatio-temporelle du fer à l'exutoire d'un ...

    African Journals Online (AJOL)

    croûte terrestre le fer joue un rôle important dans le .... que terrestre ; mais aussi de l′Océan. Atlantique au ..... écosystémique liés au transport des personnes et ... chimique des eaux de l'Oued. Khoumane (Moulay Idriss Zerhoun,. Maroc).

  17. Paleoecology, stratigraphy and sedimentology of the deposit of diatomite Loma Camastro, Liberia-Guanacaste

    International Nuclear Information System (INIS)

    Gamboa-Sojo, Viviana

    2013-01-01

    The use of fossil diatoms have sought to establish the evolution of the paleoecological and sedimentary processes, a section of paleolake in the warehouse Loma Camacho, Liberia-Guanacaste. The same has consisted of a volcano-sedimentary sequence of continental origin, shown as a lacustrine deposit, due to the presence of diatoms as their predominant fossil feature. The stratigraphy and sedimentology are established in detail of a portion of the formation of the Loma indicating, by this analysis, materials reworked of volcaniclastic origin and sedimentary deposits of lacustrine origin. The study has coincided to a sequence of tobitas, differentiated by their granulometry, microscopically corresponded to lodolites or claystones, with concentrations different of diatom fossils and crystals (predominantly quartz and biotic), in a clay matrix. Patterns of variation in the diatom paleocommunities are determined and have been recognized different species. General environmental conditions of paleolake are established, such as pH, productivity, solar radiation, salinity, etc. In addition, changes in diatom communities, sedimentation patterns and relations to the local and regional context were correlated setting dominant paleoenvironmental conditions for that depositional period in Loma Camastro. The main influence has been the seasonal changes in dry and rainy periods and constant volcanic activity of Volcan Rincon de la Vieja [es

  18. Processus de formation et relations spatio-temporelles des minéralisations à or et argent en contexte volcanique Précambrien (Jbel Saghro, Anti-Atlas, Maroc). Implications sur les relations déformation-magmatisme-volcanisme-hydrothermalisme

    OpenAIRE

    Tuduri , Johann

    2005-01-01

    M. Michel FAURE Professeur, Université d'Orléans Examinateur M. Didier MARQUER Professeur, Université de Besançon - Rapporteur M. Alain CHEILLETZ Professeur, ENSG-INPL, Vandoeuvre-lès Nancy - Rapporteur M. Alain CHAUVET Chargé de recherche CNRS, Montpellier - Directeur de thèse M. Luc BARBANSON Maître de Conférences, Université d'Orléans - Co-Directeur de thèse M. Aomar ENNACIRI - Directeur Service Géologie SMI - Examinateur; Within the Jbel Saghro (Eastern Anti-Atlas, Morocco), two major tec...

  19. ¿Independencia o afiliación? Felices días tío Sergio de Magali García Ramis: una batalla literaria contra el olvido

    Directory of Open Access Journals (Sweden)

    María Fernanda Díaz Basteris

    2013-01-01

    Full Text Available Se explora la relación entre la identidad cultural y el sentimiento de pertenencia de los puertorriqueños en la novela Felices días tío Sergio (1986 de Magali García Ramis. El texto plantea que el conflicto transitivo entre colonia y Estado Libre Asociado de la isla de Puerto Rico afecta de manera compleja las estructuras más sensibles y profundas de una familia. Se analiza la lucha de ideologías en el texto: conservadores/independentistas, las diferencias entre viejas (el pasado y nuevas generaciones (presente y futuro. En esta novela el conflicto social entre mantener la ciudadanía, como estatus político, y la identidad, como permanencia cultural refleja interesantes situaciones históricas dignas de un análisis literario

  20. Analfabetismo tecnológico en la sociedad de la información

    Directory of Open Access Journals (Sweden)

    Pedro Antonio Rojo Villada

    2015-01-01

    Full Text Available Las nuevas tecnologías han convulsionado la vieja sociedad industrial, forjando nuevas relaciones económicas. El reto de la Sociedad de la Información es más un desafío cultural y social que puramente tecnológico. Las nuevas tecnologías de la información se están convirtiendo en un factor de referencia fundamental para la época de transición y crisis como la que se vive hoy. Todas las prospectivas parecen prever que en el futuro las redes de comunicación serán impulsadoras de cambios en el sistema socio económico de las naciones. Sin embargo la complejidad intrínseca a las nuevas tecnologías acaba generando analfabetismo tecnológico que excluye a grandes sectores de la población.

  1. Isotopic and chemical composition of water and steam discharges from volcanic-magmatic-hydrothermal systems of the Guanacaste Geothermal Province, Costa Rica

    Energy Technology Data Exchange (ETDEWEB)

    Giggenbach, W.F. (Department of Scientific and Industrial Research, Petone (New Zealand). Chemistry Div.); Soto, R.C. (Instituto Costarricense de Electricidad, San Jose (Costa Rica))

    1992-07-01

    The Guanacaste Geothermal Province encompasses three major geothermal systems, each centered on its respective volcanic structure: Rincon de la Vieja to the NW, Miravalles in the center and Tenorio to the SE. Each shows corresponding sets of surface manifestations: vapor discharges from fumaroles and steam-heated pools at altitudes >500 m; lower temperature SO{sub 4}-Cl springs on the lower slopes of the respective volcano; and cooler neutral Cl springs to the S of the volcanic chain, at altitudes <500 m. The production of HCO{sub 3}-rich waters is limited to a narrow belt stretching to the S of Miravalles volcano. Chemical and isotopic evidence suggests that the neutral Cl waters, also discharged from deep wells, are derived from a more primitive Cl-SO{sub 4} water formed by transfer of readily mobilised, originally magmatic constituents to deeply circulating groundwater. (author).

  2. El surrealism de la poesía Lorquiana y su interpretación

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    Branka Kalenić Ramšak

    2001-12-01

    Full Text Available Federico García Lorca, pasados los cien años de su nacimiento, sigue siendo uno de los poetas españoles mas conocidos, traducidos, leídos y recitados en el mundo. Su imagen de juglar moderno se ha convertido en un fenómeno cultural hispánico, o mejor dicho, en uno de los tópicos españoles. Su obra poética ha ido cobrando a lo largo de este siglo dimensiones de una obra clásica española, comparable a la de Cervantes, de Lope de Vega o de Luis de Góngora. Su lenguaje poético, brotado de la vieja tierra mediterranea, nos ha hechizado a todos y su metáfora presagiosa todavia nos estremece al hacernos sentir el misterio de la vida y de la muerte.

  3. El sistema político mundial del siglo XXI, un enfoque macro-metapolítico

    Directory of Open Access Journals (Sweden)

    Alberto Rocha V.

    2001-01-01

    Full Text Available Los procesos de globalización, regionalización supranacional, continentalizacióny localización en curso en el planeta están configurando un mundo virtual y posiblemente un mundo nuevo. Este mundo virtual, que se está organizando sobre la base de cuatro niveles espaciales (lo global, lo supra-regional, lo nacional y lo local, hace pensar en las posibilidades de un sistema político mundial virtual desde el momento mismo en que se descubren las dimensiones políticas nuevas y viejas de los procesos que impulsan cada nivel espacial. El sistema político mundial virtual podría ser un “sistema de geogobiernos” (D. Held, donde la democracia y la participación política plural de los ciudadanos sea un proyecto a reinventar.

  4. Modelisation temporelle de la consommation electrique en analyse du cycle de vie appliquee au contexte des TIC

    Science.gov (United States)

    Maurice, Elsa

    Fossil fuels are a scarce energy resource. Since the industrial revolution, mankind uses and abuses of non-renewable energies. They are responsible for many environmental damages. The production of energy is one of the main challenges for a global sustainable development. In our society, we can witness an exponential increase of the usage of the systems of Information and Communication Technologies (ICT) such as Internet, phone calls, etc. The ICT development allows the creation and optimization of many smart systems, the pooling of services, and it also helps damping the climate change. However, because of their electric consumption, the ICT are also responsible for some green house gases (GHG) emissions: 3% in total. This fact gives them the willingness to change in order to limit their GHG emissions. In order to properly evaluate and optimize the ICT services, it is necessary to use some methods of evaluation that comply with the specificity of these systems. Currently, the methods used to evaluate the GHG emissions are not adapted to dynamic systems, which include the ICT systems. The variations of the production of electricity in a day or even a month are not yet taken into account. This problem is far from being restricted to the modelling of GHG emissions, it widens to the global variation in production and consumption of electricity. The Life Cycle Assessment (LCA) method grants useful and complete tools to analyse their environmental impacts, but, as with the GHG computation methods, it should be dynamically adapted. In the ICT framework, the first step to solve this LCA problem is to be able to model the variations in time of the electricity production. This master thesis introduces a new way to include the variation in time of the consumption and production of electricity in LCA methods. First, it generates an historical hourly database of the electricity production and import-export of three Canadian states: Alberta, Ontario and Quebec. Then it develops a model in function of time to predict their electricity consumption. This study is done for a project implementing a " cloud computing " service in between these states. The consumption model then provides information to optimize the best place and time to make use of ICT services such as Internet messaging or server maintenance. This first-ever implementation of time parameter allows more precision and vision in LCA data. The disintegration of electrical inventory flows in LCA refines the effects of the electricity production both historically and in real time. Some short-term predictions for the state of Quebec electrical exportations and importations were also computed in this thesis. The goal is to foresee and optimize in real time the ICT services use. The origin of a kilowatt-hour consumed in Quebec depends on the import-export variable with its surrounding states. This parameter relies mainly on the price of the electricity, the weather and the need for the state of Quebec in energy. This allows to plot a time-varying estimate of the environmental consequences for the consumption of a kilowatt-hour in Quebec. This can then be used to limit the GHG emission of ICT services like " cloud-computing " or " smart-grids ". A smart trade-off between electricity consumption and environmental issues will lead to a more efficient sustainable development.

  5. A la recherche d’espaces invisibles de la mobilité

    Directory of Open Access Journals (Sweden)

    Sandrine Depeau

    2015-03-01

    Full Text Available Le recours aux techniques GPS pour la collecte de données de déplacement connaît un essor important. Si ces techniques permettent en effet d’accroître la qualité spatio-temporelle des données, leur mise en œuvre en termes de collecte et d’analyse requiert encore des phases d’expérimentation pour autoriser à la généralisation. Cet article rend compte des différentes phases d’une étude exploratoire ayant recours aux techniques de recueil de déplacements quotidiens par GPS. L’enquête menée auprès d’enfants visait d’une part à tester « l’accceptabilité » de l’outil GPS et d’autre part à dépasser l’approche origine-destination en testant des analyses portant sur l’espace du déplacement, lui-même appréhendé à partir d’indicateurs : imprégnation verte, attractivité sociale potentielle, rupture de voies (sécurité routière.

  6. Sélection et utilisation de l'habitat par les jeunes stades de poissons d'eau courante : le modèle Ombre commun (Thymallus thymallus, L.

    Directory of Open Access Journals (Sweden)

    SEMPESKI P.

    1995-04-01

    Full Text Available L'Ombre commun a servi de modèle biologique dans le cadre de l'étude de la dynamique des changements d'habitats caractérisant les jeunes stades de poissons d'eau courante. Des campagnes d'observations directes, depuis la berge ou en plongée, de jour comme de nuit, associées à des descriptions de l'habitat physique et des prélèvements de poissons et de faune invertébrée benthique et dérivante, ont permis une analyse fine de la sélection et de l'utilisation de l'habitat par les jeunes stades d'ombre et de leur évolution à différentes échelles spatio-temporelles. Différents groupes fonctionnels ont pu être distingués parmi les stades larvaires et juvéniles, en fonction des microhabitats sélectionnés de jour (alimentation et de nuit (repos, et des différentes stratégies de sélection des proies.

  7. HABITAT DE LA TRUITE COMMUNE (SALMO TRUTTA L. PENDANT LA PÉRIODE JUVÉNILE EN RUISSEAU : PRÉFÉRENCES, MOUVEMENTS, VARIATIONS JOURNALIÈRES ET SAISONNIÈRES.

    Directory of Open Access Journals (Sweden)

    ROUSSEL J. M.

    2002-04-01

    Full Text Available Cet article synthétise les résultats de travaux récents sur l’habitat de la truite commune pendant sa période juvénile en ruisseau. Par des approches in situ (affluents du Scorff, Bretagne et en milieu expérimental, les variations temporelles d’utilisation de l’habitat ont été étudiées, ainsi que l’influence de certains facteurs abiotiques (vitesse de courant, profondeur, granulométrie, abris et biotiques (prédation, compétition intraspécifique sur les choix d’habitat de l’individu. A l’aide de la bibliographie sur le sujet, nous proposons un bilan des changements journaliers et saisonniers d’habitat du juvénile en ruisseau, depuis l’émergence jusqu’à la première reproduction. En matière de protection des milieux, l’accent est mis sur l’importance de la diversité des habitats disponibles dans les affluents où se reproduit l’espèce.

  8. Regulación en el uso de la tierra con fines preventivos en los alrededores del cuadrante de la antigua comunidad de Cinchona, Alajuela, Costa Rica

    Directory of Open Access Journals (Sweden)

    Esquivel Valverde, Lidier

    2011-07-01

    Full Text Available La regulación del uso de la tierra permite establecer cuales lugares son aptas para el establecimiento de zonas habitacionales, comercios, industria, actividades agrícolas, actividades turísticas, entre otras, evitando incrementar la vulnerabilidad física o ambiental. El presente artículo se basa en un estudio realizado a la comunidad de Cinchona a raíz del sismo del año 2009, el cual, por las características topográficas y geológicas de la región, generó una cantidad alta de daños a la infraestructura y pérdida de vidas humanas, lo que propició la elaboración de una herramienta técnica normativa que regulara el uso de la tierra en esa zona. La investigación consideró aspectos como el uso de la tierra antes del sismo, tenencia de la tierra, producción agropecuaria, valor de la tierra, pendientes de terreno, geomorfología, capacidad de uso de la tierra, aguas subterráneas, zonas de vida y áreas silvestres y por último las amenazas más relevantes. Como resultado del estudio se presenta en el artículo un resumen de la regulación de tierra propuesta, la cual comprende el sector de Vieja Cinchona (zona devastada por el sismo y las microcuencas cercanas Land use regulations allow to identify suitable places to establish housing, commerce, industry, agricultural activities, and tourism, among others, avoiding to increase physical or environmental vulnerability. This article is based on a study developed at the Cinchona community after the 2009 earthquake, which due to the topographic and geological characteristics generated a lot of damages to infrastructures and losses of human lives. In this context, a normative technical tool was developed to regulate the land use in the zone. The investigation considered aspects such as land use before the earthquake, land possession, farming production, land value, land slopes, geomorphology, land use capacity, underground water, wild life areas and most relevant threats. As a result of

  9. Trabajo femenino en la industria petrolera de Chubut (1919-1962

    Directory of Open Access Journals (Sweden)

    Graciela Ciselli

    2002-01-01

    Full Text Available El artículo compara el trabajo femenino -extradoméstico y doméstico- en dos pueblos de empresas petroleras -la estatal Yacimientos Petrolíferos Fiscales y la privada Astra- ubicadas al norte de Comodoro Rivadavia en la Patagonia Argentina, durante dos épocas: 1919/1945 y 1946/1962. En el primer período se recuperan las formas en que las mujeres aprendieron las tareas femeninas orientadas al trabajo doméstico hogareño. Este aprendizaje les serviría, cuando decidieron o necesitaron, para insertase en el mercado laboral en ocupaciones afines (cocineras, mucamas, lavanderas. En el segundo período, como consecuencia de los cambios sociales, culturales y económicos ocurridos a nivel nacional y local, surgieron para las mujeres nuevas oportunidades en viejas ocupaciones predominantemente masculinas, de las que surgieron v.gr. las telefonistas y enfermeras.

  10. Sangres políticas

    Directory of Open Access Journals (Sweden)

    Gabriel Gatti

    2018-03-01

    Full Text Available Trabajamos en las tensiones entre dos continentes en permanente disputa: “sangre” y “política”, “realidad” y “dispositivo”, “naturaleza” y “cultura”. Son viejos asuntos, y viejas tensiones, pero que no dejan de actualizarse y que ahora se manifiestan por doquier en cuestiones como la biometría, los mapas genéticos, la identificación de desaparecidos, las políticas de la identidad indígena o de género o de menores o de drogas, la gestación subrogada o la gestión de la marginalidad. Los diez textos recogidos en este número especial discuten desde una mirada interdisciplinaria sobre la presencia de la sangre —en sus distintas declinaciones— en la definición contemporánea de lo que entendemos por identidad, derechos humanos o ciudadanía.

  11. François Dosse. El arte de la biografía

    Directory of Open Access Journals (Sweden)

    Alexander Pereira Fernández

    2008-01-01

    Full Text Available Durante el último siglo y medio, la disciplina histórica dio sus mejores combates por conquistar un lugar respetable dentro de las ciencias sociales. Y en la medida en que lo lograba, la biografía, como género invertido entre lo ficcional y lo factual, debió ser desterrada para que así la Historia, que debía escribirse con H mayúscula, alcanzara la ansiada respetabilidad científica. Dado su carácter inclasificable e impuro, por su cercanía a lo literario, a lo intuitivo, a lo emotivo o a cualquier tipo de subjetivismo, la biografía terminó por ser recluida al cuarto de las cosas viejas, allá atrás donde no hiciera pasar vergüenza a nadie, junto a las trompetas y los tambores de la historia de los grandes héroes.

  12. El intento de neo-regalismo en el siglo XX: los proyectos de concordato entre Chile y la Santa Sede en 1928

    Directory of Open Access Journals (Sweden)

    Salinas Areneda, Carlos

    2014-04-01

    Full Text Available La separación entre la Iglesia y el Estado de Chile llevada adelante por la Constitución de 1925 fue ocasión para que se hablara de un posible concordato entre Chile y la Santa Sede, siendo el gobierno chileno el que pretendió llevar a la práctica esa idea proponiendo textos concretos de concordato. En ellos, sin embargo, pretendió recuperar, por la vía de un pacto con la Santa Sede, viejas prácticas regalistas que con la separación entre la Iglesia y el Estado habían quedado derogadas pero que se resistía perder. En este artículo, a partir de materiales recientemente conocidos en el Archivo Secreto Vaticano, se estudian las cláusulas que en los proyectos redactados en 1928 son expresión del neo regalismo del gobierno chileno

  13. ¿Quién programa las redes sociales en Internet? El caso de Twiter en el movimiento #Yosoy132 México

    Directory of Open Access Journals (Sweden)

    Torres Nabel, Luis César

    2015-08-01

    Full Text Available The article discusses the latest hypothesis that social networks and Internet social influence is spontaneous and accidental, which contradicts the old hypothesis of the initial programming of all social movements from a previously defined strategic influence. The discussion starts from analyzing of the most influential players in the movement #YoSoy132 on social network Twitter in México.El artículo discute las últimas hipótesis de que en las redes sociales e Internet la influencia social es espontánea y accidental, lo que contradice las viejas hipótesis de la programación inicial de todo movimiento social a partir de un ejercicio de influencia estratégica y previamente definida. La discusión parte del análisis de los actores más influyentes en el movimiento #YoSoy132 en la red social Twitter en México.

  14. Retos teóricos de la Demografía en la sociedad contemporánea

    Directory of Open Access Journals (Sweden)

    Alejandro I. Canales

    2004-01-01

    Full Text Available Desde Malthus, la pregunta por la población se sustentó en la relación población-desarrollo. Tanto el origen de la pregunta como las diferentes respuestas que se elaboraron surgieron de la matriz discursiva de la modernidad. En el marco de la crisis de los metarrelatos de la modernidad, el desafío de la demografía no se refiere tanto a la reinversión de teorías que den nuevas respuestas a viejas preguntas, como al cuestionamiento de la pregunta que dio origen al tema demográfico en el seno de la sociedad moderna. En este sentido, la tesis que se sostiene en este artículo es que el discurso demográfico en la sociedad posmoderna debe surgir de la crítica del concepto de población prevaleciente en el discurso de la modernidad

  15. Dando tiempo a la actualidad. Querella de las viejas artes y las nuevas technés

    Directory of Open Access Journals (Sweden)

    Luis Puelles

    2016-01-01

    Full Text Available Se persigue la confrontación entre dos regímenes contemporáneos de “artisticidad”, el correspondiente a las pragmáticas de estetización del mundo y aquel otro adscribible –asumiendo, desde luego, cuantas heterodoxias y rupturas convenga aceptar– al sistema moderno de las bellas artes. Este doble plano de lo artístico nos permitirá observar cómo nos hallamos en una época en la que los poderes de administración del mundo actúan mediante procedimientos de gestión de las imágenes mediáticas y telemáticas regidos por la absolutización de la inmediatez y la instantaneidad. Frente a los artistas-gestores de imágenes, estas páginas se aproximan a la rehabilitación hermenéutica de un arte (de auctores que, en lúcida revisión de la modernidad, sea capaz de cargar con el tiempo para restituir a la experiencia humana el dramatismo y la nostalgia. We will pursue the confrontation between two contemporary regimes of “artisticness”, corresponding to the pragmatic way of aesthetization of the world and an other that can be ascribed to the modern system of the arts –assuming, of course, how many heterodoxies and ruptures convene to accept. This dual level of the artistic will let us observe how we are in a time in which the powers of administration of the world are acting through the management procedures of the media and telematic images governed by the absolutism of immediacy and instantaneity. Faced to the artists-managers of images, these pages approximate the hermeneutic rehabilitation of an art (of auctores that, in lucid review of modernity, will be able to bear the time for restoring to the human experience the drama and the nostalgia.

  16. Nuevos lenguajes fílmicos en la vieja Europa: el cine social de los hermanos Dardenne

    Directory of Open Access Journals (Sweden)

    Margarita Campillo Díaz

    2013-04-01

    Full Text Available Las películas de los hermanos Dardenne son documentos vivos, poblados de perso-najes marginales y excluidos, que ofrecen enormes posibilidades para reflexionar desde múltiples espacios educativos. Su obra presenta un reconocido estilo personal autoral, tanto en la forma como en las historias que aborda, susceptible de análisis y profundización. Adentrarse en ella y bucear su estilo narrativo es el objetivo de este estudio. Para materializarlo se esboza, al inicio, la tradición europea creadora de nuevas formas de expresión fílmica a lo largo del siglo XX -desde el naturalismo poético francés hasta llegar al movimiento nórdico “Dogma 95”- para explorar, más detenidamente, a continuación la produc-ción de los directores belgas: siguiendo un planteamiento evolutivo que transita desde sus primeros trabajos que antecederán a “La promesa” (1996 hasta su último film, “El niño de la bicicleta”( 2011, en este texto se analizan las obras de ficción de los hermanos y el estilo característico que pre-domina en ellas. Planos cortos, que trans-miten su propia vida interior, y de larga duración para que se pueda seguir atentamente la acción, filmación continua-da en el mismo orden programado en el guión, ausencia de música intrusiva, imá-genes despojadas de toda clase de buenos sentimientos… el sello personal de los Dardenne abre cauces novedosos de expresión comunicativa tan poderosos como creativos.The movies of the Dardenne brothers are living documents filled with marginalized characters that offer a great opportunity to think and reflect from different educational perspectives. Their work has a very personal composition; for being ahead of its time and for the depth of its analysis. With this essay, we try to explore and dive deep in their narrative style. For that, we first draft their influences taken from the European tradition with its new ways of filmic expressions, throughout the XX century: from the poetic French naturalism to the Nordic movement “Dogma 95”, to explore in bigger detail, after that, the influence of the productions of Belgian directors: all of these following an evolutionary approach that goes from their first movies before “La promesse” (1996, to their last film, “The kid with a bike” ( 2011,in this text, we analyze their fictional tales and their characteristic style. Close ups that describe an inner life and long shots to attend to the events in detail. The filming is always done in the order planned in the screenplay, there is always a lack of intrusive music, images without any kind of good feelings...the style of the Dardenne brothers which is an open door to new communicative styles, all of them powerful and creative.

  17. San Felices de los Gallegos (Salamanca: análisis estratigráfico de la Cerca Vieja

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    Luis SERRANO PIEDECASAS

    2009-12-01

    Full Text Available San Felices de los Gallegos es un pueblo alejado, confín geográfico de la provincia, e injustamente olvidado de cualquier promoción institucional, dado el interés geográfico de la comarca y el valor arquitectónico de su núcleo urbano. Más conocido que por su interesantísima arquitectura popular1, San Felices lo es por su castillo, palimpsesto de defensas ha sido llamado, y como tal domina y abarcaba a todo el caserío. La población de San Felices de los Gallegos ha sido considerada históricamente como defensa avanzada, junto con la plaza de Ciudad Rodrigo, de la diócesis Mirobrigense frente al Reino de Portugal. Su nombre dícese fue impuesto por el obispo de Oporto, D. Félix XI, se supone que a una población ya existente, corriendo el año 690. De historia tan disputada frente al vecino reino da fe su conquista por el rey portugués don Dionís en 12962, monarca al que se atribuye también la erección de la fortaleza.

  18. La lectura en formatos digitales en el Chile actual: nuevas prácticas y viejas desigualdades

    Directory of Open Access Journals (Sweden)

    Cristóbal Moya

    2017-01-01

    Full Text Available En el presente artículo se caracteriza la fisionomía de la lectura en formatos digitales, especialmente en comparación con los impresos. Para esto se analiza la lectura en formatos digitales de cuatro materiales de lectura en el Chile actual (libros, revistas, periódicos e historietas a partir del Estudio de Comportamiento Lector 2014. Las prácticas lectoras son analizadas en cuanto prácticas culturales más amplias, lo que permite dar cuenta de la afinidad existente entre prácticas lectoras y determinados grupos sociales. En particular, se examinan las implicancias de ser un “lector omnívoro” en términos de formatos digitales e impresos. Se encuentra que los “lectores omnívoros” corresponden a perfiles lectores de posiciones sociales aventajadas en términos de educación e ingresos del hogar. Además, los omnívoros son quienes exhiben una mayor disposición a leer distintos materiales y en distintos formatos. Finalmente, se evidencia que existe una reproducción intergeneracional de la desigual disposición a leer en formatos digitales a partir del análisis de la educación de los padres. PALABRAS CLAVE: lectura digital en Chile, prácticas lectoras en Chile, lectura y distinción social, omnivorismo lector. In this article the main features of the format of digital reading are presented, particularly in comparison with print. In order to carry out this aim, the reading in digital format of four reading materials in contemporary Chile (books, magazines, newspapers and comics is analyzed drawing on the Estudio de Comportamiento Lector 2014 (Study of Reading Behavior. Reading practices are analyzed as broader cultural practices, which allows to establish links between reading practices and certain social groups. Particularly, the implications of being an ‘omnivore reader’ are examined, considering digital and print formats. Results show that ‘omnivore readers’ correspond to reading profiles of advantaged social positions in terms of education and household income. Furthermore, omnivores express a greater willingness to read different materials and formats. Finally, an intergenerational reproduction of the unequal disposition to reading in digital formats is evidenced when analyzing the parents’ reading education. Keywords: digital reading in Chile, reading practices in Chile, reading and social distinction, cultural omnivorousness.

  19. Acondicionamiento de reproductores, desove y cultivo larval de Graus nigra (Philippi, 1887 (Kyphosidae: Girellinae Broodstock conditioning, spawning and larval culture of Graus nigra (Philippi, 1887 (Kyphosidae: Girellinae

    Directory of Open Access Journals (Sweden)

    Avelino Muñoz

    2012-09-01

    Full Text Available Se describen resultados sobre acondicionamiento reproductivo, desove y cultivo larval de Graus nigra ("vieja negra", "mulata". Peces adultos silvestres se recolectaron y se utilizaron como reproductores, los que al final del período de acondicionamiento alcanzaron el estado de maduración gonadal y desovaron en forma natural y espontánea. Los huevos fueron recolectados y después de 36 h de incubación eclosionaron, con una tasa de eclosión promedio de 60%. Las larvas recién eclosionadas midieron 2,9 ± 0,23 mm y alcanzaron el día 50 post-eclosión (PE una longitud total de 12,6 ± 0,37 mm. La sobrevivencia larval posterior a la eclosión fue entre 50,9 y 79,1% y al día 30 PE fue de 12,1%. El cultivo larval se desarrolló en estanques con suministro de agua de mar filtrada y esterilizada. Después de la reabsorción del saco vitelino se produjo el desarrollo del tracto digestivo y las larvas se alimentaron con dieta viva enriquecida con emulsión de ácidos grasos altamente insaturados. A los 35 días de cultivo se ofreció alimento artificial a las larvas cuyo tamano fue aumentando progresivamente a medida que progresó su desarrollo ontogénico. Se describe la evolución anatómica de las larvas y las relaciones morfométricas que representan su desarrollo; se caracteriza el patrón de crecimiento de las larvas hasta los 50 días post-eclosión y se discuten aspectos relacionados con la sobrevivencia larval y la introducción de mejoras para optimizar la producción de larvas y juveniles.In this study results related to reproductive conditioning, spawning and larval culture of Graus nigra ("vieja negra", "mulata" are given. Wild adult fishes were collected and used as brooders which at the end of the conditioning period reached gonadal maturation state and spawned naturally and spontaneously. Eggs were collected and after 36 hours of incubation they hatched at average rate of 60%. The hatched larvae measured 2.9 ± 0.23 mm and at day 50

  20. Contrôle intelligent de la domotique à partir d'informations temporelles multisources imprécises et incertaines

    OpenAIRE

    Chahuara , Pedro

    2013-01-01

    A smart home is a residence featuring ambient intelligence technologies in order to help its dwellers in different situations of common life by trying to manage their comfort and security through the execution of actions over the effectors of the house. Detection of abnormal situations is paramount in the development of surveillance systems. These situations can be detected by the analysis of the traces resulting from audio processing and the data provided by the network of sensors installed ...

  1. Aislamiento de algas del embalse del Neusa por medio de cultivos In Vitro

    Directory of Open Access Journals (Sweden)

    A. Maldonado

    2000-07-01

    Full Text Available EI cultivo de algas a nivel mundial es un oficio de vieja data, pero en Colombia se encuentra en sus primeras etapas de desarrollo. El presente trabajo desarrollado en el Laboratorio de Bioensayos, Departamento de Biología, Universidad Nacional de Colombia está encaminado a aportar técnicas en el desarrollo del cultivo de algas. En la parte practica del trabajo se utilizaron muestras de agua del embalse del Neusa las cuales se cultivaron en medios líquido y solido. Se observo un mejor crecimiento de cianofíceas filamentosas en medio solido y algas verdes en medio líquido. Las clamidomonas se ven favorecidas en ambos medios, hecho que permitió aislar una sepa pura de este tipo de algas. Las diatorneas por el hecho de crecer en relación con algas verdes generan un problema metodológico para su aislamiento, que aun se encuentra sin resolver.

  2. Residuos Sólidos Urbanos y nuevas políticas en el territorio metropolitano de Buenos Aires: 2002-2015

    Directory of Open Access Journals (Sweden)

    Mariana Saidón

    2017-12-01

    Full Text Available Este estudio examina un proceso de cambio institucional en la gestión de los Residuos Sólidos Urbanos en el territorio de la Región Metropolitana de Buenos Aires, entre 2002 y 2015. La agenda pública se ha ido orientando incipientemente hacia la recuperación de materiales y el manejo integral de los residuos, a partir de coyunturas críticas, lo cual requirió de un lento proceso de aprendizaje y reacomodamiento de los actores involucrados. Si bien a las nuevas instituciones se opone una gran resistencia de viejas alianzas que obstaculizan un cambio radical inmediato, la emergencia de múltiples actores en la escena —que promueven un cambio de modelo y cuentan con herramientas jurídicas—, genera una apertura del campo de negociación en la que los viejos actores se ven obligados a generar acuerdos, a incorporar nuevas estrategias y a reconfigurar sus modelos de negocios.

  3. EL RESURGIMIENTO DE LAS TETRACICLINAS

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    Alejandro Canale-Guerrero

    2011-01-01

    Full Text Available Reportes recientes mencionan que las tetraciclinas han vuelto a ser consideradas agentes terapéuticos importantes en el tratamiento de viejas enfermedades como la conjuntivitis gonocócica y contra nuevos padecimientos como la infección de Helicobacter pylori en pacientes dispépticos, en enfermedades causadas por protozoarios patógenos, en la terapia genómica contra el cáncer y como agente anti-reumático. La creación de programas para limitar el uso de antibióticos, junto con la extensión de hábitos y prácticas de higiene, en algunos países y la reciente producción industrial de moléculas de tetraciclina modificadas mediante síntesis química, han sido acciones decisivas para lograr que antibióticosde primera generación, que en su momento fueron útiles pero que generaron resistencia bacteriana, vuelvan a ser efectivos.

  4. Manifestaciones de la crise en America Latina y las paradojas del neodesarrolismo argentino

    Directory of Open Access Journals (Sweden)

    Claudio Katz

    Full Text Available El agravamiento de la crisis global acentúa las limitaciones de la economía latinoamericana para atemperar la turbulencia. Aumenta la centralidad de UNASUR, pero el fondo de estabilización no contrarresta la extranjerización de las finanzas y el estancamiento del Banco del Sur. Las enormes reservas terminarán socorriendo a los banqueros europeos, si no hay avances en la moneda común. El extractivismo exportador impide repetir el desarrollo manufacturero asiático y refuerza la preeminencia de las empresas transnacionales. Los planes asistenciales no reducen la desigualdad, ni atemperan la superexplotación, mientras la lumpen-burguesía del narcotráfico potencia la marginalidad social. El desprestigio neoliberal ha resucitado los enfoques neo-desarrollistas, pero la sustitución de las viejas burguesías nacionales por grupos exportadores obstruye los proyectos de reindustrialización. En este contexto si plantea la posibilidad de una tercera vía verdaderamente popular.

  5. Del funcionalismo industrial al de servicios: ¿la nueva utopía de la metrópoli postindustrial del valle de México?

    Directory of Open Access Journals (Sweden)

    Blanca Ramírez

    2006-05-01

    Full Text Available El objetivo de este ensayo es responder algunas preguntas que han sido parte de viejas y nuevas reflexiones sobre la Metrópoli del Valle de México, y descubrir las nuevas tendencias que percibimos en su desarrollo. Partimos de suponer que hay confusión en la forma como se le nombra y que la visión de futuro sobre su transformación en el mediano y largo plazo pasa por un cambio importante de la función industrializadora que el modelo de sustitución de importaciones impuso a la ciudad, por otro de servicios y patrimonialista que le impone la visión postindustrial en que se ve inmersa en la actualidad. En esta transformación resalta la importancia de la periferia, dada la ubicación privilegiada que tiene en cuanto al patrimonio natural y cultural que le es propio, posibilitando así su contribución para alcanzar la sustentabilidad de la metrópoli

  6. La racionalidad económica y la secularización

    Directory of Open Access Journals (Sweden)

    ANDRÉS BILBAO

    1996-01-01

    Full Text Available La racionalidad económica es uno de los principales rasgos de la modernidad. Esta racionalidad es, aparentemente, resultado de la ruptura con la vieja superstición religiosa. Sin embargo, sus raíces están en ese mundo religioso, que cree haber superado. en este sentido, el proceso de secularización, del que nace la moderna racionalidad, no es más que la interiorización de los valores religiosos del cristianismo. La creencia de que el individuo, siguiendo sus propios intereses, da lugar a un mundo ordenado, es el rasgo característico de la racionalidad económica. Esta creencia tiene sus raíces en la doctrina cristiana en más de un mundo providencia. El desarrollo de la racionalidad económica no constituye a la superstición religiosa, sino que ella misma, como una nueva forma de superstición, se desarrolla en paralelo con ella.

  7. La Literatura en el Media Art: Instalaciones interactivas y experiencias multisensoriales

    Directory of Open Access Journals (Sweden)

    Carolina Fernandez Castrillo

    2012-06-01

    Full Text Available En el presente artículo se pretende actualizar el estado de las conexiones estilísticas, temáticas y comunicativas entre la literatura y las artes. Esta vieja relación interdisciplinar se ve afectada por el creciente protagonismo de la presencia tecnológica en las expresiones culturales emergentes. Desde el media art veremos en qué modo el artista digital puede llegar a superar los límites del modelo narrativo clásico mediante la incorporación de instalaciones interactivas, hipertextuales y multisensoriales capaces de proyectar al espectador hacia nuevos horizontes creativos y proponiendo, al mismo tiempo, una nueva aproximación al mundo literario y al objeto libro. Se revisarán conceptos clave como la “obra abierta” de Umberto Eco o el “prosumidor” de Alvin Toffler. Para ilustrar esta serie de planteamientos nos detendremos en el análisis de una selección de casos concretos.

  8. Efectos de la Atención Dividida sobre la Memoria Episódica en Adultos Jóvenes y Mayores

    Directory of Open Access Journals (Sweden)

    Patricia Trejo-Morales

    2011-01-01

    Full Text Available El objetivo del estudio fue determinar los efectos de dividir la atención durante la codificación y la recuperación en adultos jóvenes y mayores cuando una tarea de memoria y otra secundaria se realizaron en la misma modalidad. Los 72 participantes realizaron una tarea secundaria de discriminación visual mientras clasificaban imágenes (natural/artificial en la codificación, o las reconocían (vieja/nueva en la recuperación. Los adultos mayores cometieron más errores en la tarea secundaria que los adultos jóvenes. El reconocimiento en los adultos mayores no difirió cuando se dividió la atención en la codificación y la recuperación, mientras que en los adultos jóvenes fue menor cuando se dividió en la codificación. En el envejecimiento la capacidad para administrar los recursos de atención disminuye.

  9. EFECTOS DE LA ATENCIÓN DIVIDIDA SOBRE LA MEMORIA EPISÓDICA EN ADULTOS JÓVENES Y MAYORES/ EFFECTS OF DIVIDED ATTENTION ON EPISODIC MEMORY IN YOUNG AND OLDER ADULTS/ EFEITOS DA ATENÇÃO DIVIDIDA SOBRE A MEMÓRIA EPISÓDICA EM ADULTOS JOVENS E IDOSOS

    Directory of Open Access Journals (Sweden)

    Selene Cansino

    2011-12-01

    Full Text Available El objetivo del estudio fue determinar los efectos de dividir la atención durante la codificación y la recuperación en adultos jóvenes y mayores cuando una tarea de memoria y otra secundaria se realizaron en la misma modalidad. Los 72 participantes realizaron una tarea secundaria de discriminación visual mientras clasificaban imágenes (natural/artificial en la codificación, o las reconocían (vieja/nueva en la recuperación. Los adultos mayores cometieron más errores en la tarea secundaria que los adultos jóvenes. El reconocimiento en los adultos mayores no difirió cuando se dividió la atención en la codificación y la recuperación, mientras que en los adultos jóvenes fue menor cuando se dividió en la codificación. En el envejecimiento la capacidad para administrar los recursos de atención disminuye.

  10. Peleles y coplas del Carnaval madrileño

    Directory of Open Access Journals (Sweden)

    Fraile Gil, José Manuel

    2007-12-01

    Full Text Available In the early 1800’s, the old custom of hoisting people and dogs in the air by means of blankets turned into an expression of Carnival, developed chiefly by women. Strawmade effigies, known as peleles, were in every case representations of men whom women, while singing, would revile with all kinds of invectives. The custom lasted until well into the 1900’s, especially in Madrid and the southern towns within its province.

    La vieja costumbre de mantear seres humanos y perros se transformó a comienzos del siglo XVIII en una manifestación del Carnaval desarrollada fundamentalmente por mujeres. Los muñecos de paja, llamados peleles, representaban siempre la figura de un hombre, a quien las mujeres dirigían todo tipo de injurias por medio del canto. La costumbre pervivió especialmente en Madrid y los pueblos más meridionales de su provincia hasta bien mediado el siglo XX.

  11. ¿La escuela de antes era mejor? Continuidades y tensiones en las memorias de docentes neuquinas del período territoriano (1884-1957

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    Rolando Javier

    2012-06-01

    Full Text Available  Las memorias de viejas docentes del territorio neuquino presentan ciertas continuidades en algunas cuestiones, por ejemplo: cuando narran sobre Ias su forrnaci6n normalista y sus prácticas laborales; pero esta ortodoxia se fragmenta, se tensiona cuando indagamos en otras experiencias, como Ia maternidad y los recuerdos sobre el peronismo. Tratar de comprender y explicar Ias causas de estos procesos, constituyen los objetivos de este artículo.Palabras-clave: memoria, historia de la educación, Neuquén.   Abstract The memory of old teachers of Neuquén territory, present some continuities of some thematics, for example: when they talk about their normal formation and their labored practices; but this orthodox is broken, when they talk about some experiences in their life like be mother or remembers of peronismo. The objective of this paper is tried to make a comprehension and explain the causes of these processes. Keywords: memory, history of education, Neuquén.

  12. El museo deslumbrante: octubre de 1965

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    Fernando Arbelaez

    1965-10-01

    Full Text Available Los había visto varias veces dialogando con los pescador es que tejen las redes cerca al mar. Inseparable pareja de seres un poco fantasmales que hadan Bruno y su compañero, con sus blue-jeans destartalados y sus viejas camisas sin botones abiertas hasta la cintura. Bruno tiene el pelo lacio y le cae hasta la nuca, el otro se parece a un San Juan Bautista con un aire irónico, por el pelo encrespado tan largo como el de Bruno y la barba enmarañada de rizos absurdos. Nunca imaginé que los dos fuesen artistas : Bruno hace pinturas abstractas y Edmond Jaquerod escribe versos. Esto me lo ha dicho Monique que me ha prometido llevarme a su atélier. Helena en la forma más discreta y enérgica me ha hecho saber que no quiere tener relación alguna con ellos.

  13. “Comunismo”, dijo él

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    Pardo, José Luis

    2013-12-01

    Full Text Available What is the sense of the seemingly growing renaissance of communism in the continental philosophy? Should we take it seriously or is it only an attempt to be trendy in the thinking affairs? This brief article points out the old but powerful roots of this new fascination and suggests an ironic comparison of the “new” French philosophers of the 1980 decade and these “old” neocommunist French thinkers of nowadays.¿Cuál es el sentido del aparente renacimiento del comunismo en la filosofía continental? ¿Hemos de tomarlo en serio, o se trata de una simple moda en el terreno del pensamiento? Esta breve nota señala las viejas y poderosas raíces de esta nueva fascinación y propone una comparación irónica entre los “nuevos filósofos franceses” de la década de 1980 y estos “viejos filósofos franceses” que hoy convergen en el neocomunismo.

  14. Democracia en México: transición hacia un corporativismo social

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    Annel Vázquez Anderson

    2004-01-01

    Full Text Available Así como las viejas democracias tienen el riesgo de convertirse en tiranías de la mayoría, los nuevos sistemas democráticos están constantemente en peligro de ser ingobernables. Las instituciones tradicionalmente democráticas como los partidos políticos y los parlamentos no han ayudado a eliminar o por lo menos a reducir esos riesgos. Éstos deben decidir pragmáticamente lo que la mayoría quiere o perderse en el objetivo ideal de responder a la confusa y contradictoria pluralidad. ¿Tenemos otras alternativas además de éstas? Philippe Schmitter nos dio en 1986 esperanzas con su propuesta de corporativismo renovado como una forma alternativa de representación social. Este ensayo intenta ser una propuesta de diseño institucional y organizacional. Se proponen un modelo de corporativismo social y otro de sindicalismo para México.

  15. Jongleuses en blouse blanche Jugglers in white. The social construction of hospital nurses’ temporal competences

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    Paul Bouffartigue

    2009-07-01

    Full Text Available À partir d’une enquête conduite auprès d’infirmières hospitalières travaillant dans deux unités de soins de médecine, on montre d’abord comment se manifestent leurs compétences temporelles de « jongleuses ». On montre ensuite comment ces compétences sont socialement construites, au travers d’une socialisation sexuée et professionnelle, de la diversité des modes d’appropriation des horaires, et des espoirs d’évolution de carrière vers des horaires moins fatigants. Reste que ces compétences demeurent peu visibles et reconnues.Based on a survey of female hospital nurses working in two medical units, we first show how their temporal competences make them appear like “jugglers”. We next show how those competences are socially constructed, by a socialization bound both by their gender and type of work as well as by the diverse ways each personally adjusts to her schedule and hopes for a better one as her career unfolds. It must be said that such competences are still not readily visible or acknowledged.

  16. Towards high resolution ^1H NMR spectra of tannin colloidal aggregates

    Science.gov (United States)

    Mirabel, M.; Glories, Y.; Pianet, I.; Dufourc, E. J.

    1999-10-01

    The time dependent colloidal formation of tannins in hydro-alcoholic medium has been studied by 1H-NMR. Line broadening observed with time can be cancelled by making use of magic angle sample spinning (MASS) thus yielding sharp lines that allow structural studies. We used as an example catechin, a constitutive monomer of Bordeaux young red wine tannins. Chemical shift variations of polyphenol protons allow monitoring the time course of aggregation. La formation de tanins colloïdaux au cours du temps, en milieu hydroalcoolique, a été suivie par RMN-^1H. Un élargissement marqué des résonances est observé et peut être supprimé par la rotation de l'échantillon à l'angle magique ce qui ouvre tout un champ d'études structurales sur ces composés colloïdaux. L'exemple proposé est celui de la catéchine, monomère constitutif de tannins présents en grande quantité dans les vins rouges jeunes de Bordeaux. Des variations du déplacement chimique de certains protons polyphénoliques permettent de suivre l'évolution temporelle de l'agrégation.

  17. Stahl et les âges de la vie

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    Sarah Carvallo

    2011-07-01

    Full Text Available La vieillesse constitue une pierre de touche pour toute théorie médicale : elle oblige à rendre raison de la temporalité à l’œuvre dans la vie. Aux yeux de Stahl, les iatromécaniciens méconnaissent la dimension temporelle de l’organisme ; en particulier, ils en ignorent la périodicité. Comprendre la vieillesse suppose donc la critique de la représentation linéaire du temps organique, que développe la mécanique et qui réduit le vivant au seul composé physique et chimique. Il reste alors à trouver la cause de la périodicité organique : sur ce point, Georg Ernst Stahl critique Thomas Sydenham, qui reconnaît certes la périodicité du vivant mais nie la possibilité d’une médecine étiologique. Pour sa part, le médecin de Halle cherche à rendre compte du vieillissement en lien avec les actions organiques fondamentales : le tonus, la circulation, l’excrétion, la sécrétion.

  18. Modèles aléatoires en écologie et évolution

    CERN Document Server

    Méléard, Sylvie

    2016-01-01

    Le but du livre est de définir et développer une grande gamme d'outils probabilistes pour la modélisation en biologie des populations, afin de décrire des dynamiques temporelles de quantités biologiques telles que la taille d'une ou plusieurs populations, la proportion d'un allèle dans une population ou la position d'un individu. En partant de modèles markoviens discrets (marches aléatoires, processus de Galton-Watson), nous abordons progressivement le calcul stochastique et les équations différentielles stochastiques, puis les processus markoviens de saut, tels les processus de branchement à temps continu et les processus de naissance et mort. Nous étudions également les processus discret et continu pour l'évolution génétique et les généalogies: processus de Wright-Fisher et coalescent. Le livre détaille systématiquement les calculs de quantités d'intérêt pour les biologistes. De nombreux exercices d'application sont proposés. Le dernier chapitre montre l'apport de ces outils pour des...

  19. Culuwiya cichlidorum n. sp. (Digenea: Haploporidae) from the black-belt cichlid Vieja maculicauda (Pisces: Cichlidae) from Nicaragua

    Czech Academy of Sciences Publication Activity Database

    Aguirre-Macedo, M. L.; Scholz, Tomáš

    2005-01-01

    Roč. 91, č. 6 (2005), s. 1379-1384 ISSN 0022-3395 R&D Projects: GA AV ČR IAA6022404 Institutional research plan: CEZ:AV0Z60220518 Keywords : Trematoda * Haploporidae * taxonomy Subject RIV: EG - Zoology Impact factor: 1.524, year: 2005

  20. Resurgimiento minero en Perú: ¿una versión moderna de una vieja maldición?.

    Directory of Open Access Journals (Sweden)

    Javier Arellano.

    2008-06-01

    Full Text Available The renewed importance of mining in the Peruvian economy and the expectation of new investments in the sector have nourished the hope of reducing the poverty levels and overcoming political instability. That is why Peru maintains itself within orthodox politics and economy. Recent governments have kept a strict macroeconomic stability and, since 2001, they have encouraged a political agenda that stresses decentralisation, participation, and collaboration between private initiatives and public institutions. However, the increase of conflicts around mining operations questions the capacity of mining to promote development. I contend that in the context of a state with important limitations, the simplistic implementation of the new political agenda generates a new form of “curse of the resources” that consists of two changes: a the appearance of new political actors; b the emergence of a sub-national level as the crucial space in which this “curse” is manifested.

  1. EL USO DE AGUAS PLUVIALES EN LA CIUD AD DE ALICANTE. DE VIEJAS IDEAS A NUEVOS ENFOQUES

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    Álvaro Francisco Morote Seguido

    2017-01-01

    Full Text Available Desde los años sesenta, e l litoral mediterráneo español se ha caracterizado por un espectacular incremento urbano relacionado con el turismo residencial y de sol y playa. Ello ha repercutido en el aumento del consumo de determinados recursos como es el agua. A e sto, hay que sumar los problemas de suministro y de disponibilidad asociados a su escasez por factores climáticos y al incremento de la demanda. El objetivo de esta investigación es poner de manifiesto y analizar la importancia y potencialidad que tienen las aguas pluviales dentro del ciclo hidro - social en la ciudad de Alicante ( España para incrementar la oferta de agua para determinados usos (riego de jardines , baldeo de calles, etc. . Para ello, se han analizado datos sobre el uso y recogida de estos recursos y se han realizado diferentes entrevistas a técnicos de la empresa encargada de la gestión de los depósitos donde se almacena este recurso (Aguas Municipalizadas de Alicante , Empresa Mi xta, S.A. . Como principal conclusión se puede reseñar que el uso de este nuevo recurso hídrico ha permitido , por un lado, reducir el gasto de agua potable para determinados usos municipales y, por otro, aminorar la contaminación y el riesgo de inundación coincidiendo con episodios de lluvias intensas.

  2. Relativity made relatively easy

    CERN Document Server

    Steane, Andrew M

    2012-01-01

    Relativity Made Relatively Easy presents an extensive study of Special Relativity and a gentle (but exact) introduction to General Relativity for undergraduate students of physics. Assuming almost no prior knowledge, it allows the student to handle all the Relativity needed for a university course, with explanations as simple, thorough, and engaging as possible.The aim is to make manageable what would otherwise be regarded as hard; to make derivations as simple as possible and physical ideas as transparent as possible. Lorentz invariants and four-vectors are introduced early on, but tensor not

  3. Phénomènes énonciatifs et localisations spatio-temporelles dans Du Côté de chez Swan

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    Marta Saiz Sánchez

    2013-04-01

    Full Text Available The autobiographical discourse distinguishes two enunciative levels: the self of the narrator and the self of the character. This paper analyses the referential and enunciative spatio-temporal deictics in Proust’s fiction. At the narratorial level, deictics refer to the narrator’s present time and they organize both the story and the narration. From the character’s enunciative level, they grant access to his conscience by means of reported speech and non-verbalized thoughts. Deictical references also appear in the story in sentences with a third person subject creating an empathy with it. Furthermore there is a narrative use of deictics, particularly of maintenant.

  4. Du nulle part au partout : l’utopie de Wittig pour changer le présent et l’avenir From nowhere to everywhere: Wittig’s Utopia to transform the present and the future

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    Kate Robin

    2010-12-01

    Full Text Available L’écrivaine Monique Wittig se projette au-delà des contraintes temporelles, tout en s’inspirant de l’époque révolutionnaire des années 1970. La culture est recréée, puisant dans l’Antiquité et la Préhistoire réelles et/ou inventées. Cette notion transtemporelle est récurrente chez des écrivaines d’utopies, servant déjà d’inspiration pour Christine de Pizan au XVe siècle. Elle rassembla par son écriture une population de femmes du passé, du présent et de l’avenir dans une « Cité des Dames », où elles vivront ensemble en dehors des contraintes temporelles et spatiales. Dans l’ensemble, les utopies littéraires féministes s’intéressent à la réinvention du temps, qui devient non plus une notion linéaire, mais circulaire. Aussi le symbole du cercle sert à ordonner les écrits de Wittig, notamment dans Les Guérillères. Cette « épopée » affirme une chronologie, mais non pas celle des horloges ou des calendriers. Les écrivaines utopistes relient le passé est l’avenir, avec une communication immédiate et facile entre les époques. Le présent, étant pollué par la hiérarchie et la domination, est secondaire dans ses manifestations courantes, mais primordial dans le sens que toute l’œuvre est dédiée à l’amélioration immédiate et constante de notre condition humaine.Though inspired by the revolutionary currents of the 1970s, writer Monique Wittig travels beyond temporal constraints. Culture is recreated, nourished by real or invented antiquity and prehistory. Such trans-temporal travel is common among feminist writers, it already inspired Christine de Pizan in the 15th century. Christine assembled a population of women from the past, present and future into the “City of Ladies”, where they could live together without spatial or temporal constraints. On the whole, feminist literary utopias are interested in questions of time and its reinvention in a cyclical and not linear form

  5. Spatial and temporal variability of stable isotope composition of precipitation over the south american continent

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    1995-01-01

    Full Text Available VARIABILITE SPATIALE ET TEMPORELLE DE LA COMPOSITION EN ISOTOPES STABLES DE LA PRECIPITATION SUR LE CONTINENT SUDAMERICAIN. L’Agence Internationale de l’Energie Atomique, en coopération avec l’Organisation Météorologique Mondiale, exploite un réseau mondial de stations pour la prise d’échantillons mensuels de précipitation. Actuellement, à peu près 60 stations fournissent des informations sur la composition isotopique de la précipitation sur le continent sudaméricain. Ces dernières années plusieurs réseaux d’échantillonnage d’un caractère national (Argentine, Brésil, Chili, Equateur, Pérou ont été initiés. Les données apportées par ces réseaux contribuent au réseau mondial de l’AIEA/OMM. Ces travaux se concentrent sur l’étude de la variabilité spatiale et temporelle de la composition isotopique stable de la précipitation sur le continent. Dans cette étude, est examinée en détail la relation entre la composition isotopique de la précipitation dans la région et quelques paramètres climatiques, tels que la quantité de précipitation et la température de l’air. VARIABILIDAD ESPACIAL Y TEMPORAL DE LA COMPOSICIÓN DE ISÓTOPOS ESTABLES DE LA PRECIPITACIÓN EN EL CONTINENTE SUDAMERICANO. El Organismo Internacional de Energía Atómica (OIEA, en colaboración con la Organización Meteorológica Mundial (OMM, está llevando a cabo un estudio a escala global de la composición isotópica de la precipitación a partir de muestras mensuales de lluvia recogidas en estaciones meteorológicas. En la actualidad alrededor de 60 estaciones proporcionan información sobre la composición isotópica de la precipitación en el continente sudamericano. Durante los últimos años se han establecido en la región varias redes de control con carácter nacional (Argentina, Brasil, Chile, Ecuador, Perú. Los datos aportados por estas redes representan una valiosa contribución a la red mundial del OIEA/OMM. Este trabajo se

  6. El populismo de Fernando Vallejo

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    Oswaldo Ortegón Cufiño

    2015-11-01

    Full Text Available Desde una visión interdisciplinaria, este trabajo busca reconocer actitudes populistas en la narrativa y el habla de Fernando Vallejo. Se observa cómo el autor y el gramático narrador de sus novelas y film (1994-2010, 2000 recurren de forma insistente y unívoca a la difusión de un pensamiento demoledor de la vieja institucionalidad, que funda la nación latinoamericana con estrategias comunicativas provocadoras, autoritarias, afectuosas y mesiánicas que, por lo general, tipifican el discurso populista. En la primera parte se discute el entronque ideológicopolítico de Vallejo con la tradición literaria latinoamericana. En la segunda parte se analiza la forma en la que discurren las estrategias comunicativas que se anotan. Algunas de sus novelas, ensayos y presentaciones públicas constituyen la materia de este trabajo. Al final, se destaca la genialidad del lenguaje vallejiano para articular una extraña forma de encantamiento social que carece de un estilo definido.

  7. Los países emergentes en el G-20 y la política seguida por Argentina

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    Roberto Miranda

    2017-06-01

    Full Text Available En este artículo se analiza la presencia de los países emergentes en la gobernanza global a través de la participación desplegada por ellos en el G-20, con el fin de identificar la posición de Argentina en este ámbito multilateral, y determinar el uso que hizo de su poder como potencia media. Para cumplir con este objetivo consideramos las cumbres de jefes de Estado y de Gobierno del G-20, desde la primera realizada en Washington, en 2008, hasta la novena llevada a cabo en Brisbane, en 2014. Observamos que más allá de las diferencias y disputa de intereses, países desarrollados y emergentes convergieron en sostener las Viejas instituciones internacionales como el FMI. Argentina, de participación intensa en las cumbres pero sin una estrategia de influencia, quedó fuera de esta coincidencia y perdió poder en las reformas producidas en los medios multilaterales de crédito.

  8. Cádiz, cuna de la murga uruguaya: ¿mitificación de los orígenes?

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    Dorothee Chouitem

    2017-01-01

    Full Text Available Muchos autores de libros o artículos dedicados al mundo del carnaval contribuyeron a una historia de los orígenes y de la evolución de la murga, y se convirtieron en buscadores de viejas historias de familia, de experiencias vividas o contadas que estuvieran relacionadas con la cultura uruguaya. Esos escritos se basan principalmente en la recuperación de una memoria oral y todos evocan la misma anécdota para trazar la historia de la murga, que concuerda en transmitir una versión sobre unos supuestos orígenes andaluces —y, más precisamente, gaditanos—. En este artículo se aborda esa polémica cuestión de los orígenes de la murga en el contexto del carnaval de Montevideo y se evalúa, por un lado, en qué medida la filiación andaluza que se admite comúnmente constituye un mito cuidadosamente elaborado y, por otro lado, se presenta otra posible filiación.

  9. Reflexión sobre la noción de autenticidad en el tango rioplatense eflexión sobre la noción de autenticidad en el tango rioplatense

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    Andrea Marsili

    2013-09-01

    Full Text Available La noción de autenticidad ocupa un sitio muy importante en el tango rioplatense. Los juicios sobre la tanguidad de ciertas propuestas, es decir, sobre su nivel de autenticidad, existieron de manera permanente desde la Guardia Vieja. En el marco de esta discusión histórica, la música de Astor Piazzolla ha sido encarada desde cuatro posturas primordiales: la primera sostiene que su producción no es tango sino música popular contemporánea de Buenos Aires; la segunda refiere que su música nos lleva de la agonía del tango a la potencia del nombre; la tercera considera que su tango es nómade y la última defiende plenamente su tanguidad. A través del desglose de las referidas visiones se busca analizar su solvencia, aporte al estudio del tango, aplicabilidad actual a las nuevas tendencias, y la eventual complementariedad que pueda existir entre ellas a la hora de encarar un estudio del género y sus compositores

  10. La crisis de las bibliotecas universitarias argentinas The Crisis in Argentine University libraries

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    Irene Münster

    2004-12-01

    Full Text Available El presente trabajo intenta brindar un panorama de la situación de las bibliotecas universitarias argentinas, tanto nacionales como privadas, en el período comprendido entre los años 2001 a 2003. Se ha tratado de identificar y evaluar si la crisis acontecida en Argentina en diciembre de 2001 afectó puntualmente el desenvolvimiento de estas instituciones o tan sólo acrecentó problemas de vieja data. Mediante una encuesta enviada a todas las bibliotecas universitarias del país, se cubrieron ciertas áreas de su planeamiento (desarrollo de colecciones, personal, etc. y se presentan los resultados de la misma.The article outlines the situation faced by Argentinean university libraries, both national and private, between 2001 and 2003. It investigates whether the fiscal crisis in December 2001 significantly changed the management of Argentinean libraries or only increased old problems. Through a survey on university libraries of the country, certain areas of their planning was covered (collection development, personnel, etc. and the results are shown.

  11. Multiculturalismo y derechos fundamentales en el noroeste de México: El caso de la tribu yaqui

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    Enrique F. Pasillas

    2018-04-01

    Full Text Available El objetivo del presente artículo es proponer una discusión sobre el papel de la multiculturalidad y sus implicaciones dentro del Estado nación mexicano desde la metodología del Derecho, dada la carencia de las herramientas jurídicas e institucionales para encausar el creciente reto de una sociedad multiétnica que aspira a una convivencia pacífica; donde los pueblos indígenas de México sostienen viejas demandas sobre el cumplimiento y respeto de sus derechos fundamentales, sustentadas ahora en el derecho y en la jurisprudencia internacionales. El análisis propuesto arroja que a pesar de las reformas constitucionales de 2001 y de 2011, es necesario ajustar el marco jurídico interno, introducir el pluralismo jurídico y la interculturalidad en la agenda pública y el espacio institucional. El caso de la tribu yaqui es paradigmático porque enarbola una lucha legal y pacífica por sus derechos fundamentales contra el despojo de sus territorios ancestrales y sus recursos naturales.

  12. Islas en la ciudad: Hábitat y espacio público en el corregimiento Curundú de Panamá

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    Mônica de Souza

    2011-08-01

    Full Text Available El objetivo principal de este artículo es reflexionar acerca de los cambios, organización y continuidad de la producción del espacio urbano, considerando las peculiaridades e involucrando condiciones de vida y hábitat de la población de los barrios pobres. En esa perspectiva, se analiza el fenómeno de segregación urbana, responsable por modificar las relaciones sociales, haciendo que sus habitantes creen, produzcan y reproduzcan nuevas y viejas formas de vivir y relacionarse con los espacios donde habitan. Para este articulo traemos como ejemplo una de las áreas del Corregimiento de Curundú, ubicado en la Ciudad de Panamá, lugar conocido por sus estigmas de violencia y pobreza. En ese contexto, el artículo muestra la experiencia pedagógica desarrollada en la Escuela de Arquitectura y Diseño de América Latina y El Caribe-ISTHMUS, en Panamá, presentando los proyectos realizados por los estudiantes en el Barrio Curundú.

  13. BREVE VISIÓN DE LOS PRINCIPALES PROTAGONISTAS DE LA ESCUELA INGLESA DE ATENCIÓN PRIMARIA DURANTE EL ÚLTIMO MEDIO SIGLO

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    Carlota Blanco Rubio

    2016-01-01

    Full Text Available El objetivo es hacer un breve repaso de las influencias, el núcleo duro de perfil clínico, la enfermería científica y el presente de la Escuela Inglesa de Atención Primaria durante los últimos sesenta años. Entendemos que la influencia intelectual más profunda fue la de Archie Cochrane. Entre los médicos de familia componentes del núcleo duro destacamos a John Fry (1922- 1994, David Metcalfe y Julian Tudor Hart. Por otra parte, Lisbeth Hockey (1918-2004, doctora en enfermería, fue la responsable durante varios años de la Unidad de Investigación en Cuidados de la Universidad de Edimburgo. Las fuentes de investigación historiográfica de la enfermería inglesa en internet son notables. Finalmente, Trisha Greenhalgh, médica de familia, investigadora y docente en la Universidad de Oxford, está lanzando a la vieja Escuela Inglesa de Atención Primaria hacia la mediana del siglo XXI.

  14. Comparación del modelo Hata con mediciones de atenuación en la ciudad de México

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    Fabiola Martínez-Zúñiga

    2012-01-01

    Full Text Available Este trabajo presenta la comparación de la aplicación del modelo Hata, con mediciones hechas en la banda de 400 MHz en la ciudad de México, se pretende establecer una alternativa de aplicación para las viejas ciudades coloniales españolas de América Latina. El estudio pretende establecer una relación objetiva entre el modelo y mediciones hechas en una ciudad de edificios de paredes gruesas de piedra, con alturas superiores a 15 m y calles angostas, que contrasta estructuralmente con las ciudades japonesas, en donde se hicieron las mediciones del modelo, por parte de Okumura y Hata. Se incluyen también en el análisis, las zonas modernas de paredes ligeras y baja altura de una zona típicamente urbana y sin dejar a un lado las zonas rurales que rodean normalmente a las antiguas ciudades. Los resultados se presentan comparando la atenuación en ambos casos, en función de la distancia.

  15. Factores de riesgo y su relación con la enfermedad periodontal en el área del Policlínico “Ángel A. Aballí ”

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    José Alberto Méndez González

    2007-06-01

    Full Text Available Se realizó un estudio transversal en pacientes de 15 a 65 años de edad del área de salud del Policlínico “Ángel A. Aballí ” del municipio Habana Vieja, pertenecientes a 14 consultorios seleccionados del médico de la familia, en el período comprendido entre octubre del 2005 y julio del 2006, con el objetivo de estimar la prevalencia y gravedad de la enfermedad periodontal y determinar los factores de riesgo asociados con esta. Se seleccionó una muestra de 229 pacientes por el método de selección aleatoria con probabilidad proporcional al tamaño de los consultorios del médico de la familia. La gingivitis fue la afección más prevalente asociada con factores como caries, obturaciones deficientes, higiene deficiente, maloclusiones y personas hipertensas tratadas con Nifedipina . De los factores estudiados, el hábito de fumar, la higiene deficiente y el consumo de nifedipina tuvieron asociación estadísticamente significativa en relación con la periodontitis .

  16. México y Ecuador: dos distintas formas de construir la nación desde el futbol

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    Roger Magazine

    2011-01-01

    Full Text Available En este artículo empleamos una comparación de Ecuador con México para explorar la relación entre la configuración de las rivalidades entre los equipos de futbol a nivel nacional y la distribución espacial de poder entre las regiones y ciudades. En el caso de México, el patrón de rivalidades es inseparable de un fuerte centralismo de poder político y económico, mientras que en el caso de Ecuador el patrón tiene que ver, principalmente, con una vieja lucha por la predominancia económica y política entre las ciudades de Quito y Guayaquil. Proponemos que la atención a las rivalidades futbolísticas revela cómo un segmento de la población ve, critica o replantea la posición de su ciudad o región en relación con otras y con la nación, contribuyendo "desde abajo" sobre el proceso continuo de la construcción de la nación.

  17. La economía política institucional del desarrollo local: dos cuentos de turismo en Brasil

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    A.H.J. (Bert Helmsing

    2011-04-01

    Full Text Available Hay un reconocimiento creciente en los estudios locales y regionales de la importancia de las instituciones. Predomina un 'institucionalismo suave', el cual se critica aquí por dejar por fuera el papel del Estado y por tener un sesgo hacia sinergias y externalidades positivas. Pretendemos contribuir a una política económica institucional del desarrollo local. En el marco analítico reunimos concepciones sociales y políticas de la 'economía institucional vieja' y explicitamos el papel del Estado. La construcción de nuevas instituciones es un proceso caracterizado por dependencia de camino, en el cual, las instituciones (reforman el camino de desarrollo de un área hacia una dirección determinada. Utilizando diversos recursos de poder, diferentes grupos sociales luchan por controlar este proceso. Empleamos este marco para analizar las historias divergentes de dos casos de desarrollo local en Brasil. Prainha do Canto Verde desarrolló un turismo comunitario mientras en Jericoacoara el desarrollo local culminó en turismo masivo.

  18. Una carta de doña Carolina Michaelis

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    José Fradejas Lebrero

    2003-06-01

    Full Text Available Uno de los tres filólogos o críticos literarios más importantes de la Literatura peninsular del siglo XX es doña Carolina Michaelis de Vasconcellos. Cuando se crea la Gesellschaf für Romanische Literatur (1902, los tres van juntos: el socio num. 4 es don Marcelino Menendez Pelayo, el num. 5 don Ramón Menendez Pidal y el num. 6 doña Carolina Michaelis y conste que era más vieja, pues había nacido en 1851 y aún no era doctora, lo sería en Friburgo en 1904, con una obra monumental y maestra: la edición y estudio del Cancionero de Ajuda. Había ya colaborado en el Homenaje a Menendez Pelayo (1899, con quien se carteaba de cuando en cuando y en 1903 proporcionó el texto más interesante de la Leyenda del abad don Juan de Montemayor a don Ramón Menendez Pidal…

  19. Higiene, pueblo y sanidad en Cali. Instituciones, prácticas e imaginarios. 1945-1950

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    Joan Manuel Largo Vargas

    2015-01-01

    Full Text Available Se analiza cómo las elites de Cali enfrentaron el problema de la higiene a mediados delsiglo XX, en un contexto de renovación de la política pública, la cual estaba signadapor la redefinición del lugar del “pueblo”; por los procesos de industrialización,urbanización y crecimiento demográfico y por la consolidación de una medicalizaciónde la sociedad. Para ello se parte del supuesto de que las prácticas e institucionesalrededor de la higiene en Cali se apoyaron esencialmente en el imaginario de ladefensa del pueblo. Estas discusiones se lograron rastrear en los archivos municipalesy periódicos de la época. Una política que se intentó poner en práctica en una coyunturaque generaba tensiones entre las viejas tendencias morales, los códigos normativos ylas nuevas prácticas científicas de la salud pública y de la medicina social.

  20. Telenovelas y culturas híbridas en Brasil

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    Thomas Tufte

    2015-01-01

    Full Text Available Las telenovelas han sido categorizadas como productos comerciales alienantes. Solo en los últimos años se les ha prestado una atención académica seria. Este trabajo, presenta los lados socialmente dinámicos y culturalmente expresivos de este género fascinante, en el Brasil contemporáneo. La literatura de cordel y la narrativa oral constituyen las matrices históricas fundamentales de la telenovela. La sociabilidad, la actividad colectiva y el entretenimiento son algunos de los denominadores comunes que se encuentran al analizar la función desempeñada por estas expresiones culturales populares en la historia brasileña. El rol mediador de las telenovelas en el Brasil actual es una extensión de viejas prácticas sociales y culturales. La forma de vivir con la televisión y las telenovelas, contribuye específicamente a reunirse, Hecho que influye en la constitución y desarrollo de las culturas híbridas que caracterizan a las masas urbanas de Latinoamérica.

  1. Evolución de la propiedad pública municipal en Castilla la Vieja durante la época moderno

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    Alberto MARCOS MARTÍN

    2009-12-01

    Full Text Available RESUMEN: Tras una primera parte en la que se pasa revista a los problemas que plantea la titularidad y definición jurídicas de la propiedad pública municipal, y en la que se sopesa la importancia cuantitativa y cualitativa de los bienes municipales, el grueso de este trabajo está dedicado al estudio de las principales transformaciones que afectaron a la propiedad municipal a lo largo de la Edad Moderna (la mayoría de ellas propiciadas o inducidas por los apuros financieros de la Monarquía y el vertiginoso crecimiento de la deuda pública, así como al análisis de las repercusiones que esos distintos episodios tuvieron en orden al crecimiento agrario a largo plazo, siendo la cuenca del Duero el ámbito espacial tomado como referencia.ABSTRACT: After a first part that reviews the problems arising from the legal ownership and definition of municipal public property and that weighs the quantitative and qualitative importance of public property, the main part of this study analyzes the principal transformations that affected municipal property throughout the Modern Era (the majority of them caused or induced by the monarchy's financial problems, as well as the consequences that these different episodes had as regards long-term agricultural growth, taking the Duero basin as a reference.

  2. La CEDAW y el Estado de Chile: viejas y nuevas deudas con la igualdad de género

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    Teresa Valdés Echenique

    2013-06-01

    Full Text Available Este artículo plantea a la CEDAW como un programa de acción pública destinado a eliminar la discriminación hacia las mujeres y lograr la igualdad formal y sustantiva entre mujeres y hombres, lo que, sin duda, resulta ambicioso y desafía las estructuras socioculturales de los países. En octubre de 2012, el Estado de Chile presentó al Comité para la Eliminación de todas las formas de Discriminación contra la Mujer el quinto y sexto informe periódico Combinado sobre el cumplimiento de la CEDAW. Las observaciones y recomendaciones del Comité de expertas al Estado de Chile, que consideró un informe presentado por el Instituto Nacional de Derechos Humanos y diversos informes sombra preparados por organizaciones de la sociedad civil, expresan antiguas y nuevas deudas de Chile en relación a la CEDAW y muestran un país marcado por desigualdades sociales y discriminaciones porgénero, con una democracia deficitaria en participación y representación, con enclaves conservadores y autoritarios que aún no reconocen los objetivos de la Convención.

  3. Des concepts aux indicateurs du développement durable: multidimensionnalité et responsabilisation

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    Gilles Allaire

    2004-01-01

    Full Text Available L’opérationnalisation du concept d’agriculture durable au moyen de la production d’indicateurs applicables à l’exploitation agricole pose de nombreuses difficultés en raison de l'intrication des dimensions spatiale et temporelle des problèmes et pratiques en jeu: les changements d’échelle sont alors problématiques. Les problèmes à traiter dans la perspective de plus de durabilité, compte tenu de leur nature publique, demandent d’être circonscrits à plusieurs niveaux: outre les niveaux global (biens publics mondiaux et local (activités privées, un niveau intermédiaire collectif et territorial est indispensable pour l’élaboration de solutions socialement acceptables.To deal with «sustainable agriculture» in practical ways needs to set up indicators. But such indicators are quite difficult to find out, due to the multi-scaled and inter-temporal dimensions of external effects of economic activities and especially of agricultural practices. Externalities issues, which are problems characterized by their public nature, have to be defined and sized at different levels: besides the global one (which concerns debates on global public goods and the local one (how sustainable are private activities, collective and territorial levels are also necessary to set up socially acceptable responses.

  4. Mesure de la violation de CP dans les désintégrations B$_{\\textrm{s}}^0 \\to$ $J/\\psi \\phi$, auprès du détecteur LHCb

    CERN Document Server

    Maurice, Emilie; Le Gac, Renaud

    La mesure de la phase $\\phi_{\\textrm{s}}$ violant la symétrie CP dans les désintégrations B$^0_{\\textrm s} \\to$ J$/\\psi \\phi$ est une des analyses phares de l'expérience LHCb. Le Modèle Standard prédit cette observable avec une faible incertitude théorique. La présence de Nouvelle Physique notamment dans les diagrammes en boucle de l'oscillation B$^0_{\\textrm s}$-$\\overline{\\textrm{B}}^0_{\\textrm s}$ peut significativement modifier la mesure de cette phase. Durant cette thèse, nous avons participé à différents aspects de l'analyse des désintégrations B$^0_{\\textrm s} \\to$ J$/\\psi \\phi$. Nous avons proposé une sélection multi-variables, basée sur un algorithme d'arbres de décision boostés. Cette nouvelle sélection augmente le nombre de signal B$^0_{\\textrm s} \\to$ J$/\\psi \\phi$ de 19$\\%$ mais nécessite une correction temporelle. Une étude portant sur l'origine des distorsions angulaires caractéristiques des désintégrations B$^0_{\\textrm s} \\to $J$/\\psi \\phi$ a aussi été menée. Il...

  5. Éléments finis pour les fluides incompressibles

    CERN Document Server

    Azaïez, Mejdi; Mund, Ernest

    2011-01-01

    Cet ouvrage présente l'ensemble des concepts et méthodes nécessaires à la modélisation numérique par éléments finis du comportement des fluides visqueux newtoniens incompressibles. Après un bref rappel des équations de base et des modèles simplifiés, il expose en détail les techniques d'approximation de ces équations par éléments finis pour les dépendances spatiale et temporelle (problèmes de diffusion, d'advection-diffusion et de transport). Une attention toute particulière est portée à la discrétisation spatiale des équations de Stokes et aux algorithmes temporels pour la simulation numérique directe des équations de Navier-Stokes. Un chapitre ancillaire résume les méthodes de résolution des systèmes algébriques de grande taille à structure creuse, caractéristiques des méthodes d'éléments finis. L'exposé clair, didactique et progressif offre un contenu équilibré entre théorie et pratique. Ce manuel constitue ainsi une référence indispensable pour les étudiants de ma...

  6. Cross-Domain Analogies as Relating Derived Relations among Two Separate Relational Networks

    Science.gov (United States)

    Ruiz, Francisco J; Luciano, Carmen

    2011-01-01

    Contemporary behavior analytic research is making headway in analyzing analogy as the establishment of a relation of coordination among common types of trained or derived relations. Previous studies have been focused on within-domain analogy. The current study expands previous research by analyzing cross-domain analogy as relating relations among separate relational networks and by correlating participants' performance with a standard measure of analogical reasoning. In two experiments, adult participants first completed general intelligence and analogical reasoning tests. Subsequently, they were exposed to a computerized conditional discrimination training procedure designed to create two relational networks, each consisting of two 3-member equivalence classes. The critical test was a two-part analogical test in which participants had to relate combinatorial relations of coordination and distinction between the two relational networks. In Experiment 1, combinatorial relations for each network were individually tested prior to analogical testing, but in Experiment 2 they were not. Across both experiments, 65% of participants passed the analogical test on the first attempt. Moreover, results from the training procedure were strongly correlated with the standard measure of analogical reasoning. PMID:21547072

  7. Commande de systèmes linéaires sous contraintes fréquentielles et temporelles – Application au lanceur flexible

    OpenAIRE

    Chambon , Emmanuel

    2016-01-01

    In modern control design problems, both frequency- and time-domain requirements are usually considered such that the resulting control law satisfies the specifications. Novel non-smooth optimisation techniques can be used to achieve multiple frequency-domain specifications over a family of linear models. Examples of applications include robust control design where multiple critical models for different values of the uncertain parameters are considered. This is illustrated in this thesis manus...

  8. Prevención y diagnóstico tardío de SIDA en Ciudad de La Habana, 1986-2007 Late prevention and diagnosis of the AIDS present in Havana City, 1986-2007

    Directory of Open Access Journals (Sweden)

    María Regla Bolaños Gutiérrez

    2009-09-01

    Full Text Available OBJETIVO: caracterizar la ocurrencia de los diagnósticos tardíos en personas con VIH y posibles fallas de la prevención en la atención primaria. MÉTODOS: se realizó un estudio descriptivo de corte transversal, de los 422 casos ocurridos en la Ciudad de La Habana, en el período comprendido entre 1986-2007. La información se obtuvo de la base de datos nacional de casos VIH/SIDA del Ministerio de Salud Pública. RESULTADOS: los casos de inicio clínico se incrementaron a partir de 1997, con un máximo en 2007, y los municipios con un mayor porcentaje de afectados son La Lisa, Plaza y Habana Vieja. Hubo un predominio del sexo masculino (91 % con orientación sexual de hombres que tienen sexo con hombres (85,3 %; el grupo de edad más afectado fue de 40-44 años (20,4 %, y el 53,3 % son diagnosticados por la pesquisa de ingresos. Las entidades más frecuentes son, el desgaste por VIH (34,4 %, adenopatías generalizadas con CD4 bajos (21,7 %, y neumonía por Pneomucystis jiroveci (16,0 %. En los últimos 10 años hubo un incremento de las defunciones y un 38,4 % fallecen el mismo año de su diagnóstico. CONCLUSIONES: existen dificultades en el trabajo de prevención del VIH/SIDA, en la Atención Primaria de Salud.OBJECTIVE: to characterize the occurrence of late diagnoses in HIV-persons, and the possible failures in primary care. METHODS: a cross-sectional and descriptive study was made of the 422 cases occurred in Havana City from 1986 to 2007. Information is from the national data-base of HIV/AIDS cases of Public Health Ministry. RESULTS: cases of clinical beginning were increased from 1997, with a peak in 2007, and the municipalities with greater percentage of diseased include La Lisa, Plaza, and Habana Vieja. There was a predominance of male sex (91 % with sexual intercourse from man to man (85,3 %; the more affected age group was that aged 40-44 (20,4 %, and the 53,3 % was that more diagnosed through admission inquiry. More frequent

  9. Analysis of groundwater discharge with a lumped-parameter model, using a case study from Tajikistan

    Science.gov (United States)

    Pozdniakov, S. P.; Shestakov, V. M.

    A lumped-parameter model of groundwater balance is proposed that permits an estimate of discharge variability in comparison with the variability of recharge, by taking into account the influence of aquifer parameters. Recharge-discharge relationships are analysed with the model for cases of deterministic and stochastic recharge time-series variations. The model is applied to study the temporal variability of groundwater discharge in a river valley in the territory of Tajikistan, an independent republic in Central Asia. Résumé Un modèle global de bilan d'eau souterraine a été développé pour estimer la variabilité de l'écoulement par rapport à celle de la recharge, en prenant en compte l'influence des paramètres de l'aquifère. Les relations entre recharge et écoulement sont analysées à l'aide du modèle pour des variations des chroniques de recharge soit déterministes, soit stochastiques. Le modèle est appliquéà l'étude de la variabilité temporelle de l'écoulement souterrain vers une rivière, dans le Tadjikistan, une république indépendante d'Asie centrale. Resumen Se propone un modelo de parámetros concentrados para realizar el balance de aguas subterráneas, el cual permite estimar la variabilidad en la descarga con respecto a la variabilidad en la recarga, en función de los parámetros que caracterizan el acuífero. Las relaciones entre recarga y descarga se analizan con el modelo para distintos casos de series temporales de recarga, tanto deterministas como estocásticas. El modelo se aplica al estudio de la variabilidad temporal de la descarga en un valle aluvial de Tadyikistán, una república independiente del Asia Central.

  10. Visualizing relativity: The OpenRelativity project

    Science.gov (United States)

    Sherin, Zachary W.; Cheu, Ryan; Tan, Philip; Kortemeyer, Gerd

    2016-05-01

    We present OpenRelativity, an open-source toolkit to simulate effects of special relativity within the popular Unity game engine. Intended for game developers, educators, and anyone interested in physics, OpenRelativity can help people create, test, and share experiments to explore the effects of special relativity. We describe the underlying physics and some of the implementation details of this toolset with the hope that engaging games and interactive relativistic "laboratory" experiments might be implemented.

  11. Las rivalidades futbolísticas y la construcción de la nación. Una comparación entre México y Ecuador

    Directory of Open Access Journals (Sweden)

    Roger Magazine

    2010-01-01

    Full Text Available En este artículo empleamos una comparación entre Ecuador y México para explorar la relación entre la configuración de las rivalidades de los equipos de fútbol a nivel nacional y la distribución espacial de poder entre las regiones y ciudades. En el caso de México, el patrón de rivalidades es inseparable de un fuerte centralismo de poder político y económico, mientras que en el caso de Ecuador, el patrón tiene que ver principalmente con una vieja lucha por la predominancia económica y política entre las ciudades de Quito y Guayaquil. Proponemos que la atención a las rivalidades futbolísticas revela cómo un segmento de la población ve, critica o replantea la posición de su ciudad o región con relación a otras y con relación a la nación. Esta atención revela un comentario “desde abajo” sobre el proceso continuo de construcción de la nación. In this article, we will use a comparison of Ecuador and Mexico to explore the relation between the configuration of rivalries among soccer teams at the national level and the spatial distribution of power among regions and cities. In the Mexican case, the pattern of rivalries is inseparable from the strong centralism of political and economic power, whereas in the Ecuadorian case, the pattern has to be do, primarily, with an old struggle for economic and political predominance between the cities of Quito and Guayaquil. We propose that attention to soccer rivalries reveals how a segment of the population sees, criticizes or restates the position of a city or region in relation to others and in relation to the nation. This attention reveals a commentary “from below” on the continuous process of nation building.

  12. Social relations: network, support and relational strain

    DEFF Research Database (Denmark)

    Due, P; Holstein, B; Lund, Rikke

    1999-01-01

    We introduce a conceptual framework with social relations as the main concept and the structure and the function of social relations as subconcepts. The structure of social relations covers aspects of formal relations and social network. The function of social relations covers social support......,011. The postal questionnaires were answered by a random sample in each of the age groups. The results show marked age and gender differences in both the structure and the function of social relations. The social network, measured as weekly contacts, weakens with age and so does instrumental support. Emotional...... support is unrelated to this decline in contact frequency and appears to be at the same level for younger and older individuals. Relational strain, measured as conflicts, declines with age for all kinds of social relations. The weakening of the social network with age does not seem to affect the level...

  13. Incorporating Relation Paths in Neural Relation Extraction

    OpenAIRE

    Zeng, Wenyuan; Lin, Yankai; Liu, Zhiyuan; Sun, Maosong

    2016-01-01

    Distantly supervised relation extraction has been widely used to find novel relational facts from plain text. To predict the relation between a pair of two target entities, existing methods solely rely on those direct sentences containing both entities. In fact, there are also many sentences containing only one of the target entities, which provide rich and useful information for relation extraction. To address this issue, we build inference chains between two target entities via intermediate...

  14. Public Relations & Media Relations (Kritik Budaya Amplop Pada Media Relations Institusi Pendidikan Di Yogyakarta

    Directory of Open Access Journals (Sweden)

    Adhianty Nurjanah

    2015-07-01

    Full Text Available This research is aims to determine how the media relations activities that have been done 10 Public Relations Higher Education, including the possibility of granting cultural envelope in media relations activities during this do. The object of this study is ten (10 Universities in Yogyakarta that consists of three (3 State University (PTN and seven (7 Colleges (PTS. Variations and types of media relations activities have been conducted by 10 universities. The reason is because the electoral college to ten (10 college is a big college in the city of Yogyakarta who own Public Relations and media relations activities that have a systematic and well-planned. In the course of media relations, Public Relations universities do culture accepting envelopes to reporters on the grounds reimburse the costs of transport and not as a "bribe" so that they publicized the news and as a means of imaging the institution. Publicist colleges feel that culture provides envelopes to reporters did not violate the code of ethics of their profession as a Public Relations, On the other hand for journalists, cultural granting envelope can interfere with the independence and constitute a violation of the code of ethics of their profession as journalists. Yet there are also journalists who will receive an envelope in their reporting activities. The discrepancies in the implementation of the code of ethics of journalism, is strongly influenced by the integrity of journalists and policies that apply to each media institution. Penelitian ini bertujuan untuk mengetahui bagaimana kegiatan media relations yang telah dilakukan 10 Public Relations / Humas Perguruan Tinggi tersebut, termasuk kemungkinan adanya budaya pemberian amplop dalam kegiatan media relations yang selama ini dilakukan. Objek penelitian ini adalah sepuluh (10 Perguruan Tinggi di Yogyakarta yang terdiri dari tiga (3 Perguruan Tinggi Negeri (PTN dan tujuh (7 Perguruan Tinggi Swasta (PTS . Beragam variasi dan jenis

  15. "Liberalisation du marche cerealier au Burkina Faso." Une analyse neo-institionelle de son organisation et de son efficacite temporelle et spatiale.

    NARCIS (Netherlands)

    Bassolé, Boebie Toussaint

    2000-01-01

    Cette étude a pour objectif d'analyser la réaction des marchés céréaliers ou du système de commercialisation des céréales et évaluer sa performance dans cet environnement libéral. Plus precisement, il s'agit d'analyser l'évolution de la structure du marché céréalier et le comportement des acteurs

  16. Correction of spectral and temporal phases for ultra-intense lasers; Correction des phases spectrale et temporelle pour les lasers ultra-intenses

    Energy Technology Data Exchange (ETDEWEB)

    Salmon, E

    2000-12-15

    The discovery of new regimes of interaction between laser and matter requires to produce laser pulses presenting higher luminous flux density. The only solutions that allow us to reach important power (about ten peta-watts) imply the correction of non-linear effects before compressing the laser pulse so that we do not transfer the phase modulation to the amplitude modulation. The aim of this work is the correction of the spectral phase through the modulation of the temporal phase. The first chapter is dedicated to the review of the physical phenomena involved in the interaction of ultra-intense laser pulse with matter. The peta-watt laser operating on the LIL (integrated laser line), the prototype line of the Megajoule Laser, is described in the second chapter. The third chapter presents the method used and optimized for getting an absolute measurement of the spectral phase in our experimental configuration. The fourth chapter details the analogy existing between the spatial domain and the temporal domain particularly between diffraction and dispersion. This analogy has allowed us to benefit from the knowledge cumulated in the spatial domain, particularly the treatment of the aberrations and their impact on the focal spot and to use it in the temporal domain. The principle of the phase correction is exposed in the fifth chapter. We have formalized the correspondence of the phase modulation between temporal domain and the spectral domain for strongly stretched pulses. In this way a modulation of the temporal phase is turned into a modulation of the spectral phase. All the measurements concerning phases and modulation spectral phase correction are presented in the sixth chapter. In the last chapter we propose an extension of the temporal phase correction by correcting non-linear effects directly in the temporal phase. This correction will improve the performances of the peta-watt laser. Numerical simulations show that the temporal phase correction can lead to a factor 3 improvement for the power in a LIL-type installation. (A.C.)

  17. La revolución rechazada

    Directory of Open Access Journals (Sweden)

    José Luis López Ulloa

    2011-01-01

    Full Text Available Este artículo está dividido en tres partes: en la primera establezco que la Revolución no fue un hecho homogéneo como lo hacía pensar la historia oficial, pues por las diferencias culturales entre la población mexicana hubo muchos movimientos, cada uno de ellos con sus propias características y que la revolución enfrentó el rechazo de sus enemigos tradicionales: el episcopado, la vieja oligarquía porfiriana y algunos de sus antiguos aliados; en la segunda parte intento proponer otras formas de análisis del conflicto a partir de los logros obtenidos una vez que concluyó el movimiento armado, logros que al incorporarse a la Constitución se convirtieron en las causas del rechazo de que fue objeto; por último, establezco cuales fueron las fuentes principales de la oposición a los gobiernos emergentes de la revolución, entre las que se encuentran la separación Iglesia-Estado, la educación laica y las llamadas garantías sociales plasmadas en la Constitución.

  18. Ríos en la poesía colombiana

    Directory of Open Access Journals (Sweden)

    Santiago Londoño Vélez

    2015-12-01

    Full Text Available Además de biografía –como quedó demostrado en el Boletín Cultural y Bibliográfico núm. 84–, los ríos también tienen bibliografía lírica. En Colombia, desde los días coloniales han servido al poeta como fuente directa de inspiración y también como motivo metafórico para reflexiones sobre la vida, el paso del tiempo y otros asuntos existenciales, pues, como descubrió Jorge Manrique, “nuestras vidas son los ríos que van a dar al mar, que es el morir”. Buena parte de estos versos han quedado sepultados en viejas ediciones. Varios han sobrevivido al escrutinio de la historia y al colador de las antologías. Algunos de los que no –aquí también ejemplificados–, interesan porque contribuyen a revelar las maneras en que cada época, a propósito de un río, encontró palabras y ritmos para decir el mundo, expresar sentimientos y pensamientos. Y especialmente en el siglo XIX, para demostrar la “cultura” de quienes les dedicaron composiciones.

  19. Recreación y aprendizaje en la adultez mayor a través del juego y el humor. El caso del natatorio del Club Atlético Lanús

    Directory of Open Access Journals (Sweden)

    Rada Schultze, Fernando

    2012-12-01

    Full Text Available xpresiones como “juego”, “recreación” o “aprendizaje”, del mismo modo que la combinación entre ellas, suelen pensarse casi exclusivamente en relación con determinadas etapas de la vida: la infancia y la juventud. Por el contrario, otros grupos etarios, como ser la mediana edad y la adultez mayor, comúnmente son presentados como antónimos de esta tríada. A su vez, la fortaleza, el dinamismo, la adaptabilidad a los cambios y la aptitud a incorporar nuevos conocimientos se nos enseñan como características atribuibles sólo a la población joven en lo que resulta una representación social estereotipada y mitificada de los distintos grupos de edades. Contrariando esta construcción social de los diferentes cohortes etarios, el siguiente trabajo analiza el caso de los cursos de natación para adultos mayores del Club Lanús, donde, a través del juego y el humor, las personas viejas aprenden y desarrollan un deporte que mejora su bienestar y resignifica su identidad.

  20. Manifiesto de Historia a Debate.

    Directory of Open Access Journals (Sweden)

    Historia a Debate

    2011-08-01

    Full Text Available Después de ocho años de contactos, reflexiones y debates, a través de congresos, encuestas y últimamente Internet, hemos sentido la urgencia de explicitar y actualizar nuestra posición en diálogo crítico con otras corrientes historiográficas, asimismo desarrolladas en la última década del siglo XX: (1 el continuismo de los años 60-70, (2 el posmodernismo, y (3 el retorno a la vieja historia, la última “novedad” historiográfica.Estamos viviendo una transición histórica e historiográfica de resultados todavía inciertos. Historia a Debate como tendencia historiográfica quiere contribuir a la configuración de un paradigma común y plural de los historiadores del siglo XXI que asegure para la historia y su escritura una nueva primavera. A tal fin hemos elaborado 18 propuestas metodológicas, historiográficas y epistemológicas, que presentamos a los historiadores y a las historiadoras del mundo para su debate y, en su caso, adhesión crítica y posterior desarrollo.

  1. Hydrogeological, chemical and environmental isotopic investigations in the Atitlan lake basin, Guatemala

    International Nuclear Information System (INIS)

    Baldizon, Roberto; Seiler, Klaus-Peter; Trimborn, Peter

    1994-01-01

    In the study of the hydrological balance of the Atitlan lake, the following results were obtained: The rainfall in the basin of the Atitlan lake is well known and reaches approximately 1150 mm/year. The real evapotranspiration in the basin of the Atitlan lake according to the reservoir measurements is approximately 1500 mm/year. The underground leaks is the result from the rainfall and evaporations which are calculated in 1020 l/s or 59 mm/year, respectively. The subterranean outflow from the Atitlan lake is only found between Sta. Teresa and the Madre Vieja river. The lake contribution to the flows in this area was calculated in 1100 l/s which agrees with the hydrological balance. The subterranean outflows follows the leaking water area of the lake, when the water level was higher. This indicate, that due to the decrease in the water level of the Atitlan lake the superficial discharge was stop while the subterranean discharge continues. In other parts of the spring to the Pacific area specially in the Chicacao area, there are no contributions of the lake Atitlan to the rivers flows of this area

  2. Mudanças no Estado-avaliador: comparativismo internacional e teoria da modernização revisitada

    Directory of Open Access Journals (Sweden)

    ALMERINDO JANELA AFONSO

    2013-01-01

    Full Text Available Tras analizar algunas características de la primera fase del Estado evaluador, el ejercicio planteado en este texto comienza repasando brevemente la (vieja teoría de la modernización para, a continuación, sugerir que algunos de sus presupuestos siguen, en gran medida, subyacentes en el actual comparativismo internacional evaluador que se ha constituido como agenda política, cada vez más dominante, por lo menos, desde finales de los años noventa del siglo pasado, y a la que corresponde lo que el autor denomina segunda fase (o reconfiguración del Estado evaluador. El artículo también intenta plantear algunas cuestiones e hipótesis sobre una tercera fase (la fase posterior al Estado evaluador, que, aunque todavía presenta unos límites poco definidos, puede inscribirse, de forma cada vez más evidente, en la continuidad de la expansión capitalista de las políticas de privatización y mercantilización de la educación (y de la evaluación.

  3. Justicia y legitimidad de la desigualdad tras la crisis financiera

    Directory of Open Access Journals (Sweden)

    Jesús García Cívico

    2009-07-01

    Full Text Available La crisis no sólo ha puesto de manifiesto la desconexión entre economía real y financiera sino también ha permitido cuestionar, aunque tímidamente, el papel legitimador que a menudo corresponde a los atributos meritocráticos (esfuerzo, inteligencia, etc. en el tipo de desigualdad a la que da lugar el sistema de mercado. Cuestionadas algunas de las bases (morales si se quiere con las que se pretendía fundado pero también fundante el principio de justicia del capitalismo (la vieja cuestión de la desigualdad económica legítima en relación con la igualdad formal y de derechos en el seno de la ciudadanía, pero también el nuevo problema de los techos salariales, etc. nos encontramos, querámoslo o no, ante la oportunidad de medidas más igualitarias, dado la creciente y quizás no sólo coyuntural proclividad social hacia las mismas, un fundamento sociológico valido desde la abierta y exigente conceptualización de la igualdad en nuestro ordenamiento jurídico.

  4. Reflexiones sobre la pertinencia de la educación en el campo de la gerontología en Colombia y en el mundo

    Directory of Open Access Journals (Sweden)

    Lucelly Ardila Vega

    2016-03-01

    Full Text Available Este artículo tiene como propósito presentar un cúmulo de reflexiones sobre la pertinencia de la gerontología como carrera profesional, las cuales se sustentan en un conjunto de necesidades y aspectos que tienen resonancia a diferente escala (mundial y nacional tales como: el envejecimiento demográfico y sus consecuencias; la transición epidemiológica; el perfil social de la población vieja; el reto de la dependencia; el rol de las personas mayores en la socialización de generaciones más jóvenes y, en la normatividad en temas relacionados con el envejecimiento y la vejez. Se concluye, con preocupación, que ante el panorama que justifica plenamente la necesidad de formar profesionales en gerontología, hoy exista una muy baja oferta de formación en pregrado en este campo en Colombia, lo cual demuestra la poca visibilización de las profundas transformaciones y consecuencias que, a mediano y largo plazo, trae el proceso de envejecimiento que actualmente vive el mundo y nuestro país.

  5. Aprendizaje de actividades motoras en procesos prensiles con el uso de una prótesis mecatrónica controlada por señales mioeléctricas en personas amputadas entre codo y muñeca

    Directory of Open Access Journals (Sweden)

    John Jairo Páez Rodríguez

    2011-09-01

    Full Text Available El proyecto de investigación en el campo de las ayudas aumentativas para discapacitados, tiene como objetivo principal desarrollar una prótesis del sistema biomecánico mano-muñeca para investigar la influencia que tiene en el desarrollo de ciertas habilidades y configuraciones cerebrales durante el proceso de aprendizaje; dado que la mano: permite crear un sistema de autorrepresentación, es un punto de convergencia en el sistema de retroalimentación visual, táctil y propioceptiva (percepción de la propia posición, materializa las intenciones del pensamiento, al tener conexión con el sistema ventral tiene acceso a las áreas lingü.sticas de los lóbulos temporales donde  se desarrollan los procesos semánticos (debido a la relación de manipulación -identificación- transformación de objetos, ofrece al cerebro nuevos modos de aproximarse a viejas tareas y posibilidad de emprender otras nuevas y, porque el cerebro a través de la mano modela su proceso, formación del mundo y su espacio extrapersonal.

  6. Realizaciones arquitectónicas de la segunda mitad del siglo XVIII en los interiores de las catedrales góticas españolas

    Directory of Open Access Journals (Sweden)

    José Enrique García Melero

    1989-01-01

    Full Text Available Las catedrales góticas, colosales máquinas arquitectónicas susceptibles biológicamente de cambios continuos, fueron objeto de numerosas intervenciones artísticas tanto en sus exteriores como en los interiores durante el transcurso de la segunda mitad del siglo xviii. Se partía, así, de un necesario hábito secular, debido a la concurrencia de causas múltiples: a la conclusión o realización de partes no hechas antes; a la reconstrucción, e incluso a la restauración, de determinadas zonas dañadas por el paso del tiempo y los fenómenos naturales; a las nuevas necesidades litúrgicas de la época y de mayores espacios aprovechables para diversas funciones; a planteamientos arquitectónicos novedosos contrarios a viejas prácticas; a la casi obligación de cumplir los deseos de Obispos y demás mecenas, que daban en vida o legaban testamentariamente ciertos caudales para la realización de obras diversas, inspiradas por su religiosidad y devociones a ciertos santos o por la idea de dejar huella de su presencia en la vida...

  7. Enunciados no comprometidos y punto de vista jurídico: una perspectiva renovada

    Directory of Open Access Journals (Sweden)

    Diego Dei Vecchi

    2018-04-01

    Full Text Available El autor pone en duda la posibilidad de una ciencia jurídica acorde a las exigencias del positivismo jurídico normativista, según el cual describir el derecho es dar cuenta neutralmente de lo que jurídicamente se debe hacer. Replantea la tesis de Joseph Raz de que, para proferir enunciados descriptivos tales, debe adoptarse hipotéticamente el punto de vista jurídico, en sí mismo moralmente comprometido; según esa tesis, una ciencia jurídica acorde a las exigencias ha de pronunciarse profiriendo enunciados de un tipo que Raz denomina “no comprometidos”. El texto aborda varias posturas críticas contra esta visión y muestra que si bien es posible rechazar la tesis de Raz tal como la postula, se corre el peligro de descartar como no problemático más de lo plausiblemente descartable. Así, recurriendo a dos viejas discusiones de la filosofía del derecho reformula y da plausibilidad a la tesis de la necesidad de asumir el punto de vista jurídico.

  8. Representing and querying now-relative relational medical data.

    Science.gov (United States)

    Anselma, Luca; Piovesan, Luca; Stantic, Bela; Terenziani, Paolo

    2018-03-01

    Temporal information plays a crucial role in medicine. Patients' clinical records are intrinsically temporal. Thus, in Medical Informatics there is an increasing need to store, support and query temporal data (particularly in relational databases), in order, for instance, to supplement decision-support systems. In this paper, we show that current approaches to relational data have remarkable limitations in the treatment of "now-relative" data (i.e., data holding true at the current time). This can severely compromise their applicability in general, and specifically in the medical context, where "now-relative" data are essential to assess the current status of the patients. We propose a theoretically grounded and application-independent relational approach to cope with now-relative data (which can be paired, e.g., with different decision support systems) overcoming such limitations. We propose a new temporal relational representation, which is the first relational model coping with the temporal indeterminacy intrinsic in now-relative data. We also propose new temporal algebraic operators to query them, supporting the distinction between possible and necessary time, and Allen's temporal relations between data. We exemplify the impact of our approach, and study the theoretical and computational properties of the new representation and algebra. Copyright © 2018 Elsevier B.V. All rights reserved.

  9. Microbial flora associated with submerged mangrove leaf litter in India

    Directory of Open Access Journals (Sweden)

    Narayanasamy Rajendran

    2007-06-01

    Full Text Available We studied the microbial flora in decomposing mangrove leaves in relation to changes in nitrogen and tannin levels, and in penaeid prawn assemblages. Senescent leaves of two mangrove species (Rhizophora apiculata and Avicennia marina kept in nylon bags, were separately immersed for 80 days in five tanks full of mangrove water. A known amount of decomposing leaves was collected every ten days from each tank for microorganism counts, total nitrogen and tannin measurement, and juvenile penaeid prawn counts. Five genera of total heterotrophic bacteria (THB, three species of azotobacters and 19 species of fungi were identified. The azotobacters showed a significant peak around 40-50 days after the beginning of of decomposition, similar to the trend for total nitrogen and for prawn assemblages. Rev. Biol. Trop. 55 (2: 393-400. Epub 2007 June, 29.Se estudió la flora microbiana en hojas en descomposición de mangles, considerando nitrógeno, taninos y camarones peneidos jóvenes. Colocamos hojas viejas de dos especies de mangle (Rhizophora apiculata y Avicennia marina en bolsas de nylon y las sumergimos en agua de manglar durante 80 días usando cinco tanques separados. Cada diez días extrajimos una cantidad conocida de hojas en descomposición de cada tanque. Hallamos cinco géneros de bacterias heterotróficas totales (THB, tres especies de azotobacterias y 19 especies de hongos. Las azotobacterias presentaron un pico significativo de abundancia alrededor de los 40-50 días de descomposición, un patrón similar a los del nitrógeno total y los camarones.

  10. Relational databases

    CERN Document Server

    Bell, D A

    1986-01-01

    Relational Databases explores the major advances in relational databases and provides a balanced analysis of the state of the art in relational databases. Topics covered include capture and analysis of data placement requirements; distributed relational database systems; data dependency manipulation in database schemata; and relational database support for computer graphics and computer aided design. This book is divided into three sections and begins with an overview of the theory and practice of distributed systems, using the example of INGRES from Relational Technology as illustration. The

  11. Social relations

    DEFF Research Database (Denmark)

    Due, P; Holstein, B; Lund, R

    1999-01-01

    We introduce a conceptual framework with social relations as the main concept and the structure and the function of social relations as subconcepts. The structure of social relations covers aspects of formal relations and social network. The function of social relations covers social support......, social anchorage and relational strain. We use this conceptual framework to describe social relations in the Danish population, with questionnaire data from the Danish Longitudinal Health Behaviour Study including a random sample of each of the age groups 25-, 50-, 60-and 70-year olds, N = 2......,011. The postal questionnaires were answered by a random sample in each of the age groups. The results show marked age and gender differences in both the structure and the function of social relations. The social network, measured as weekly contacts, weakens with age and so does instrumental support. Emotional...

  12. A logic road from special relativity to general relativity

    OpenAIRE

    Andréka, Hajnal; Madarász, Judit X.; Németi, István; Székely, Gergely

    2010-01-01

    We present a streamlined axiom system of special relativity in first-order logic. From this axiom system we "derive" an axiom system of general relativity in two natural steps. We will also see how the axioms of special relativity transform into those of general relativity. This way we hope to make general relativity more accessible for the non-specialist.

  13. Relation between visual function index and falls-related factors in patients with age-related cataract

    Directory of Open Access Journals (Sweden)

    Mei-Na Huang

    2016-01-01

    Full Text Available AIM:To investigate the relation between vision function index and falls-related factors in patients with age-related cataract.METHODS:Ninety-six patients with age-related cataract were interviewed using a seven-item visual function questionnaire(VF-7, then classified into poor, moderate, or good visual function group. The differences of the three groups on visual acuity, balance and mobility function, cognition, depressive symptoms, self-reported fear of falling were analyzed. RESULTS:The patients in poor visual function group had older age, tendency to depression, was more afraid of falling, compared with groups with higher score in VF-7, and they had worse visual acuity, performed worse on all balance and mobility tests. CONCLUSION:Poor visual function is related to worse visual acuity, weaker balance and mobility performance in patients with age-related cataract. The VF-7, as a simple and convenient self-reported method, can be used as a falling risk monitoring in patients with age-related cataract.

  14. Relating derived relations as a model of analogical reasoning: reaction times and event-related potentials.

    Science.gov (United States)

    Barnes-Holmes, Dermot; Regan, Donal; Barnes-Holmes, Yvonne; Commins, Sean; Walsh, Derek; Stewart, Ian; Smeets, Paul M; Whelan, Robert; Dymond, Simon

    2005-11-01

    The current study aimed to test a Relational Frame Theory (RFT) model of analogical reasoning based on the relating of derived same and derived difference relations. Experiment 1 recorded reaction time measures of similar-similar (e.g., "apple is to orange as dog is to cat") versus different-different (e.g., "he is to his brother as chalk is to cheese") derived relational responding, in both speed-contingent and speed-noncontingent conditions. Experiment 2 examined the event-related potentials (ERPs) associated with these two response patterns. Both experiments showed similar-similar responding to be significantly faster than different-different responding. Experiment 2 revealed significant differences between the waveforms of the two response patterns in the left-hemispheric prefrontal regions; different-different waveforms were significantly more negative than similar-similar waveforms. The behavioral and neurophysiological data support the RFT prediction that, all things being equal, similar-similar responding is relationally "simpler" than, and functionally distinct from, different-different analogical responding. The ERP data were fully consistent with findings in the neurocognitive literature on analogy. These findings strengthen the validity of the RFT model of analogical reasoning and supplement the behavior-analytic approach to analogy based on the relating of derived relations.

  15. Cuerpo y medios de comunicación: Viejas obsesiones y nuevas tecnologías: el cuerpo en revistas femeninas argentinas

    Directory of Open Access Journals (Sweden)

    Alejandra R. Roca

    2003-08-01

    Full Text Available En este trabajo se presentan algunos aspectos de los sentidos referidos al cuerpo en revistas dedicadas a la mujer en la ciudad de Buenos Aires. Tributaria de una visión del mundo, la noción de cuerpo pone de manifiesto tanto el proceso de individuación como la concepción mecanicista que fragmenta cuerpo y persona, proveyendo el modelo de 'posesión' del cuerpo. Las transformaciones económico-sociales. su implicancia en las relaciones personales y domésticas, y los avances en la tecnología médica han derivado en una focalización en la belleza corporal y negación del envejecimiento (cuerpo-proyecto como valores morales. El esencialismo y el biologicismo sugerido y expuesto contribuyen a reforzar una diferenciación genérica basada en los estereotipos tradicionales.This paper presents some aspects about the different meanings that refer to the human body in women magazines in Buenos Aires city. Coming from a particular vision of the world, the notion of body and person, providing the model of 'possession' of the body. Socioeconomic transformations, their consequences in the personal and domestic relationships and the advances in medical technology have derived in focalizing in corporal beauty and rejection of aging (body project as moral values. The essentialism/biologicism that is suggested and exposed, contributes to reassert a gender differentiation based on traditional stereotypes.

  16. Special relativity

    International Nuclear Information System (INIS)

    Taylor, J.G.

    1975-01-01

    It is stated that the early chapters review special relativity from an elementary mathematical viewpoint, and include discussion of recent experiments which set out to test Einstein's predictions. The theory of relativity is then reformulated in more sophisticated mathematical language to show its relation to electro-magnetism, and to lay the foundation for more general viewpoints. The final chapter discusses in simple terms where activity in the field is currently centred, and where future interest lies. Chapter headings include: the constant speed of light; measuring time and distance; the Lorentz transformation (relativity of simultaneity, space-time and causality); relativistic kinematics (including - the Dopper effect); relativistic dynamics (including - nuclear binding energy, particle creation, electrodynamics); the structure of special relativity (including - the Lorentz group, the rotation group, elementary particle scattering); extensions of special relativity. (U.K.)

  17. The special theory of relativity bound with relativity

    CERN Document Server

    Dingle, Herbert

    2014-01-01

    The Special Theory of Relativity:Based on a short course of lectures delivered in the late 1930s, this short book presents the theory of Special Relativity by formulating a redefinition of the measurement of length, and thus will appeal to students of physics who wish to think through Einstein's thought without the encumbrance of quasi-scientific concepts and language. Relativity: A Very Elementary Exposition:This brief lecture, delivered in October 1921 and published for the first time in 1925, offers an explanation of Einstein's theory of Special Relativity for the non-scientist, giving a ge

  18. Dispersion relation and relative intensity for double-plasmon satellites

    International Nuclear Information System (INIS)

    Srivastava, K.S.; Shiv Singh; Harsh, O.K.

    1981-01-01

    An expression for the dispersion relation and the relative intensity of double-plasmon oscillations and satellites has been derived by extending the dispersion relation and the extended Bohm and Pines Hamiltonian to second order. The calculated value of the relative intensity of the double-plasmon satellite for Be agrees fairly well with the value observed experimentally by other workers. (orig.)

  19. 2-year patient-related versus stent-related outcomes

    DEFF Research Database (Denmark)

    Jensen, Lisette Okkels; Thayssen, Per; Christiansen, Evald Høj

    2012-01-01

    years were further assessed with specific focus on patient-related composite (all death, all MI, or any revascularization) and stent-related composite outcomes (cardiac death, target vessel MI, or symptom-driven target lesion revascularization). A total of 1,390 patients were assigned to receive the EES......, and 1,384 patients were assigned to receive the SES. RESULTS: At 2 years, the composite primary endpoint occurred in 8.3% in the EES group and in 8.7% in the SES group (hazard ratio [HR]: 0.94, 95% confidence interval [CI]: 0.73 to 1.22). The patient-related outcome: 15.0% in the EES group versus 15.......80). CONCLUSIONS: At 2-year follow-up, the EES was found to be noninferior to the SES with regard to both patient-related and stent-related clinical outcomes. (Scandinavian Organization for Randomized Trials With Clinical Outcome IV [SORT OUT IV]; NCT00552877)....

  20. Relational Leadership

    DEFF Research Database (Denmark)

    Madsen, Charlotte Øland; Rasmussen, Jørgen Gulddahl

    2015-01-01

    In this chapter, we emphasise what we have outlined as interesting areas of relational leadership and present some ideas on how to facilitate a broader understanding of relational leadership practice. This involves the interpretations that create connections between practice and ontology. We...... elaborate on how leadership in everyday situations can be understood from a relational perspective. The chapter will focus on outlining and inspiring the reader to co-operate with other people to develop further relational understandings of leading....

  1. Introduction to relation algebras relation algebras

    CERN Document Server

    Givant, Steven

    2017-01-01

    The first volume of a pair that charts relation algebras from novice to expert level, this text offers a comprehensive grounding for readers new to the topic. Upon completing this introduction, mathematics students may delve into areas of active research by progressing to the second volume, Advanced Topics in Relation Algebras; computer scientists, philosophers, and beyond will be equipped to apply these tools in their own field. The careful presentation establishes first the arithmetic of relation algebras, providing ample motivation and examples, then proceeds primarily on the basis of algebraic constructions: subalgebras, homomorphisms, quotient algebras, and direct products. Each chapter ends with a historical section and a substantial number of exercises. The only formal prerequisite is a background in abstract algebra and some mathematical maturity, though the reader will also benefit from familiarity with Boolean algebra and naïve set theory. The measured pace and outstanding clarity are particularly ...

  2. Relating Derived Relations as a Model of Analogical Reasoning: Reaction Times and Event-Related Potentials

    Science.gov (United States)

    Barnes-Holmes, Dermot; Regan, Donal; Barnes-Holmes, Yvonne; Commins, Sean; Walsh, Derek; Stewart, Ian; Smeets, Paul M.; Whelan, Robert; Dymond, Simon

    2005-01-01

    The current study aimed to test a Relational Frame Theory (RFT) model of analogical reasoning based on the relating of derived same and derived difference relations. Experiment 1 recorded reaction time measures of similar-similar (e.g., "apple is to orange as dog is to cat") versus different-different (e.g., "he is to his brother as…

  3. In a distinguishing spacetime the horismos relation generates the causal relation

    International Nuclear Information System (INIS)

    Minguzzi, E

    2009-01-01

    It is proved that in a distinguishing spacetime the horismos relation E + = J + /I + generates the causal relation J + . In other words two causally related events are joined by a chain of horismotically related events, or again, the causal relation is the smallest transitive relation containing the horismos relation. The result is sharp in the sense that the distinction cannot be weakened to future or past distinction. Finally, it is proved that a spacetime in which the horismos relation generates the causal relation is necessarily non-total imprisoning.

  4. Numerical relativity

    CERN Document Server

    Shibata, Masaru

    2016-01-01

    This book is composed of two parts: First part describes basics in numerical relativity, that is, the formulations and methods for a solution of Einstein's equation and general relativistic matter field equations. This part will be helpful for beginners of numerical relativity who would like to understand the content of numerical relativity and its background. The second part focuses on the application of numerical relativity. A wide variety of scientific numerical results are introduced focusing in particular on the merger of binary neutron stars and black holes.

  5. A Relational Algebra Query Language for Programming Relational Databases

    Science.gov (United States)

    McMaster, Kirby; Sambasivam, Samuel; Anderson, Nicole

    2011-01-01

    In this paper, we describe a Relational Algebra Query Language (RAQL) and Relational Algebra Query (RAQ) software product we have developed that allows database instructors to teach relational algebra through programming. Instead of defining query operations using mathematical notation (the approach commonly taken in database textbooks), students…

  6. Comparison of relative and non-relative adoptive parent health status.

    Science.gov (United States)

    Foli, Karen J; Lim, Eunjung; Sands, Laura P

    2015-03-01

    Across the United States, kinship parents, extended family members and close friends, render care to the 2.7 million children who have been removed from their birth parents' care. However, differences between relative and non-relative parents reported health statuses have not been explored. The National Survey of Adoptive Parents data were used to investigate the health status of relative (n = 469) and non-relative (n = 1,599) adoptive parents. Perceived happiness in the parent-child relationship and the parents' ability to cope appear to affect parental health status. Only non-related mothers of children younger than 6 years reported better emotional health than those mothers who were related to their children. With this exception, and despite caring for children who have a greater likelihood of abuse, neglect, and exposure to drugs and alcohol prior to birth, the reported health statuses of relative parents did not differ from non-relative parents. © The Author(s) 2013.

  7. Gas measurements from the Costa Rica-Nicaragua volcanic segment suggest possible along-arc variations in volcanic gas chemistry

    Science.gov (United States)

    Aiuppa, A.; Robidoux, P.; Tamburello, G.; Conde, V.; Galle, B.; Avard, G.; Bagnato, E.; De Moor, J. M.; Martínez, M.; Muñóz, A.

    2014-12-01

    Obtaining accurate estimates of the CO2 output from arc volcanism requires a precise understanding of the potential along-arc variations in volcanic gas chemistry, and ultimately of the magmatic gas signature of each individual arc segment. In an attempt to more fully constrain the magmatic gas signature of the Central America Volcanic Arc (CAVA), we present here the results of a volcanic gas survey performed during March and April 2013 at five degassing volcanoes within the Costa Rica-Nicaragua volcanic segment (CNVS). Observations of the volcanic gas plume made with a multicomponent gas analyzer system (Multi-GAS) have allowed characterization of the CO2/SO2-ratio signature of the plumes at Poás (0.30±0.06, mean ± SD), Rincón de la Vieja (27.0±15.3), and Turrialba (2.2±0.8) in Costa Rica, and at Telica (3.0±0.9) and San Cristóbal (4.2±1.3) in Nicaragua (all ratios on molar basis). By scaling these plume compositions to simultaneously measured SO2 fluxes, we estimate that the CO2 outputs at CNVS volcanoes range from low (25.5±11.0 tons/day at Poás) to moderate (918 to 1270 tons/day at Turrialba). These results add a new information to the still fragmentary volcanic CO2 output data set, and allow estimating the total CO2 output from the CNVS at 2835±1364 tons/day. Our novel results, with previously available information about gas emissions in Central America, are suggestive of distinct volcanic gas CO2/ST (= SO2 + H2S)-ratio signature for magmatic volatiles in Nicaragua (∼3) relative to Costa Rica (∼0.5-1.0). We also provide additional evidence for the earlier theory relating the CO2-richer signature of Nicaragua volcanism to increased contributions from slab-derived fluids, relative to more-MORB-like volcanism in Costa Rica. The sizeable along-arc variations in magmatic gas chemistry that the present study has suggested indicate that additional gas observations are urgently needed to more-precisely confine the volcanic CO2 from the CAVA, and from

  8. [Anxiety, nostalgia and melancholy. A few remarks on psychoanalysis and tango].

    Science.gov (United States)

    Dimov, Jorge; Capello, Osvaldo Jorge; Caso de Leveratto, Beatriz; Neuman, Vera; Retondano, Rafael Alberto; Silvani de Capello, Stella Maris; Etchegoyen, R Horacio

    2004-01-01

    Our work is based on the application of psychoanalytic techniques, in order to unveil this cultural phenomenon called tango, related with sexuality and unconscious processes. As a way of introduction, it deals with a brief theory of the birth of tango, the possible terminological source of its name, its main creators and interpreters, as well as the chronological classification into the first wave tangos, Guardia Vieja, and the newer wave tangos, Guardia Nueva. The former ones were awash with festive themes of the centennial years, expressed in behaviors that denote sexuality and love, whereas the latter ones, expose the great bewilderment of the thirties' crisis, due to the imminent downfall of the country, the denunciation of materialism, the crumbling of ideas; which led up to feelings of utter pessimism, loneliness and abandonment. From this point onwards, through the use of techniques provided by psychoanalysis applied to tango lyrics, we are able to unravel the unconscious processes of the drama of its characters; the immigrant, hopeful and at same time nostalgic for the loss of his mother country; the porteno -urban man from Buenos Aires city- who, overwhelmed by immigrants, has to give way to the new compatriots; the inland inhabitant, who was dragged to the city because of the new conditions of rural work; and finally the conventillo, tenement house, as a melting pot that fulfilled the integration of these groups. Like in a painter's palette, which contains various colors and shades, the interpretations about nostalgia, grief and loneliness become apparent, along with the father-son rivalry, the conflict with the absent mother, the relationship between sexes, male chauvinism, infatuation, identity, the fear of death, the rebirth to a new life, the passage from gaucho to guapo, from a shrewd horseman to a daring, bullying braggart.

  9. Los inicios del notariado público en el reino de Castilla. Aportación a su estudio

    Directory of Open Access Journals (Sweden)

    Rojas Vaca, María Dolores

    2001-06-01

    Full Text Available This work investigates the role of the notary institution and the documents issued in Castilla la Vieja during the 13th century. The material examined comes principally from the collections of edited diplomatic documents coming from ecclesiastical archives in Burgos, Valladolid, Segovia and Ávila. In this study, we try to show how and when the public notary was instituted in the region, analysing the form of documents and the process by which they were issued and concluding with a typological outline of the documents and material employed.

    On étude l'institution notariale et le document notarial à Castille pendant le XIIIe siècle. Faite une selection, l'appui de la proposition, on constitue avec les documents des collections diplomatiques éditées, faites d'après les archives ecclésiastiques de Burgos, Valladolid, Ségovie et Avila. Tellement, on prétend faire voir le comment et le pourquoi de l'implantation du notariat public à Castille, on analyse l'action d'instruction des documents résultants des notaires et on étude sa forme. On finit avec l'élaboration d'une esquisse de typologie documentaire du matériel examiné.

  10. National Uranium Resource Evaluation: Marfa Quadrangle, Texas

    International Nuclear Information System (INIS)

    Henry, C.D.; Duex, T.W.; Wilbert, W.P.

    1982-09-01

    The uranium favorability of the Marfa 1 0 by 2 0 Quadrangle, Texas, was evaluated in accordance with criteria established for the National Uranium Resource Evaluation. Surface and subsurface studies, to a 1500 m (5000 ft) depth, and chemical, petrologic, hydrogeochemical, and airborne radiometric data were employed. The entire quadrangle is in the Basin and Range Province and is characterized by Tertiary silicic volcanic rocks overlying mainly Cretaceous carbonate rocks and sandstones. Strand-plain sandstones of the Upper Cretaceous San Carlos Formation and El Picacho Formation possess many favorable characteristics and are tentatively judged as favorable for sandstone-type deposits. The Tertiary Buckshot Ignimbrite contains uranium mineralization at the Mammoth Mine. This deposit may be an example of the hydroauthigenic class; alternatively, it may have formed by reduction of uranium-bearing ground water produced during diagenesis of tuffaceous sediments of the Vieja Group. Although the presence of the deposit indicates favorability, the uncertainty in the process that formed the mineralization makes delineation of a favorable environment or area difficult. The Allen intrusions are favorable for authigenic deposits. Basin fill in several bolsons possesses characteristics that suggest favorability but which are classified as unevaluated because of insufficient data. All Precambrian, Paleozoic, other Mesozoic, and other Cenozoic environments are unfavorable

  11. Fútbol, música y narcisismo: algunas conjeturas sobre “Brasil, decime qué se siente”

    Directory of Open Access Journals (Sweden)

    Pablo Alabarces

    2015-02-01

    Full Text Available Durante la Copa del Mundo 2014 en Brasil, los hinchas argentinos viajaron en gran cantidad e inundaron las calles (incluso más que los estadios cantando de modo unánime una canción de aliento, reconocida por su primer verso: “Brasil, decime qué se siente”. La canción, basada en una vieja melodía del grupo de rock norteamericano Creedence Clearwater Revival, fue rápidamente adoptada por centenares de miles de hinchas en Brasil y otros millones en la Argentina, viralizándose asimismo por las redes sociales. A partir de este fenómeno, el trabajo analiza la canción, las tradiciones musicales y políticas sobre las que trabaja, así como la relación entre música y nacionalidad que puede desprenderse de ese análisis; en el mismo sentido, discute esa relación en la historia de las Copas del Mundo. La actuación de los hinchas argentinos se convierte, entonces, en una actuación centralmente musical, en la que es posible leer la cultura futbolística argentina, organizada por el narcisismo y las lógicas del aguante. 

  12. “LAS AUDIENCIAS DE LA CALLE” ENTRE MERCADOS, CALLES Y MÚSICA EN PERÚ

    Directory of Open Access Journals (Sweden)

    Franklin Cornejo Urbina

    2008-01-01

    Full Text Available Cuando se habla de audiencias de los medios de comunicación entendemos también que ellas cambian en los contextos, donde los televidentes y radioescuchas usan los medios con modos y fines diferentes. Así y como parte de la diversidad de las audiencias he ubicado bajo la definición “audiencias de la calle” a un grupo social, más bien de origen humilde y de rutinas cotidianas colectivo-comunitarias, que incluyen a ex campesinos, niños de la calle, comerciantes ambulantes e inmigrantes empobrecidos que se reúnen, trabajan y pasan gran parte del día en mercados de zonas urbano marginales de Lima, en Perú. El mercado popular es un lugar para las grandes mayorías donde hay encuentros y tensiones entre lo urbano y rural por viejas diferencias étnicas, regionales, locales y comunitarias entre andinos y costeños. La pobreza, la urbanización y el crecimiento de las ciudades han convertido al mercado en un lugar de sobrevivencia, trabajo, y un espacio para afrontar la vida de la ciudad. El presente artículo aborda el tema de los estudios de audiencia desde el mercado popular peruano, sus medios y comunicaciones.

  13. El crédito a principios del siglo XVI en una ciudad de Castilla: la nobleza urbana como financiadora del comercio y de la industria en Segovia, 1503-1508

    Directory of Open Access Journals (Sweden)

    Ángel GARCÍA-SANZ MARCOTEGUI

    2009-12-01

    Full Text Available Al principiar el mes de julio de 1969 defendía yo mi Memoria de Licenciatura en Historia en una de las viejas aulas del Palacio Anaya de Salamanca. D. Manuel Fernández Álvarez era el director del trabajo, que se titulaba Campesinos y mercaderes en Segovia durante la crisis agraria de 1502 a 1508. Recuerdo perfectamente que el tribunal estaba formado por el entrañable D. Rafael Laínez Alcalá, como Presidente; D. Manuel, el director, D. Ángel Cabo Alonso y D. Francisco Jordá Cerda eran los Vocales; Secretario era D. José Luis Martín Rodríguez, que había llegado a Salamanca como Catedrático de Medieval dos años antes. Recuerdo también que fueron muy amables conmigo, y generosos en la calificación, por lo que ahora, veinte años después, quiero darles las gracias en letra de imprenta, sintiendo que a D. Rafael no pueda ser ya más que a título postumo. Mi agradecimiento a ellos se extiende a cuantos fueron profesores míos en Salamanca, de cuya Universidad tengo muy a gala ser Licenciado.

  14. De dragones, cascos y soldados de fortuna en el Occidente Antiguo. acerca de dos obras recientes sobre el mercenariado galo e hispano

    Directory of Open Access Journals (Sweden)

    García Jiménez, Gustavo

    2015-12-01

    Full Text Available Research on ancient mercenaries is fraught with problems, being the match between the scarce and partial data provided by the literary sources and the archaeological record a tricky and difficult matter. The recent publication of two books dealing with Iberian and Celtic mercenaries, by Raimon Graells and Luc Baray respectively, offers us an opportunity to dwell on a pervading discussion when studying cultural and military dynamics, and long distance relationships in Ancient Western Europe.La actividad mercenaria en la Antigüedad es uno de los campos de estudio más complejos de la investigación histórica, en buena medida debido a la difícil combinación que existe entre los siempre parciales datos de las fuentes literarias y la arqueología. La reciente publicación de dos monografías dedicadas al mercenario ibérico y celta, a cargo respectivamente de Raimon Graells y Luc Baray, nos brinda una magnífica oportunidad para retomar una vieja discusión siempre latente en el estudio de las dinámicas bélicas y culturales, y que nos permite ahondar en las intrincadas relaciones a larga distancia en el Occidente europeo antiguo.

  15. Universidad de Costa Rica: Premisas, polémicas y propuestas actuales en educación

    Directory of Open Access Journals (Sweden)

    María Pérez Yglesias

    2003-01-01

    Full Text Available El artículo busca sintetizar algunas reflexiones sobre las viejas y nuevas premisas y polémicas educativas que se plantean y discuten en este principio de milenio, con el propósito de pensar cómo la Universidad de Costa Rica responde a las exigencias y expectativas internas y externas de los últimos años, haciendo énfasis en la investigación y el posgrado en relación con la docencia y la acción social. Sin pretender ser exhaustivos se trata de responder, con ejemplos, si el modelo de la Universidad de Costa Rica se transforma con acciones concretas y con una perspectiva educativa coherente y académica. Como se dice en el planteamiento “hemos decidido reunir algunos tópicos en torno a cuatro grandes temas que incluyen distintos aspectos de los planteados anteriormente: por una parte el modelo de organización académica; en segunda instancia la apertura a un trabajo dialógico, en equipo, interdisciplinario e interinstitucional; en tercer lugar la incursión en nuevas tecnologías y en educación permanente y por último la tendencia hacia una Universidad cualitativa con impacto social

  16. Inmoralidad de la prisión preventiva

    Directory of Open Access Journals (Sweden)

    Jorge W. Álvarez

    2014-11-01

    Full Text Available El título no me pertenece; por eso lo pongo entre comillas, corno corresponde en rigor gramatical. Lo torné prestado de un precioso trabajo del maestro pisano Francesco Carrara, recién aparecido en una revista de criminología y que manos dilectas pusieron en las mías, conociendo mi vieja pasión por el tema. Y me dije, esto tiene que conocerse por todos los medios posibles para que la voz del viejo maestro resuene con potencia renovada.He aquí, estimado lector, el propósito de esta glosa que hoy pongo a tu consideración.No es el momento ni tampoco tendría mayor interés hacer la historia de la prisión preventiva en este país. Más vale olvidarla por todo lo que tuvo de aborrecible y antijurídica.Sólo cabría apuntar que esa historia, en términos generales, quedó dividida en dos tramos a partir de la sanción de la Ley 15.859 del 31 de marzo de 1987 y por la cual su aplicación se redujo a circunstancias excepcionales, muy pocas por cierto.

  17. Rutas y lugares de patrimonio industrial en Europa : consideraciones sobre su aprovechamiento turístico

    Directory of Open Access Journals (Sweden)

    Carlos J. Pardo Abad

    2002-01-01

    Full Text Available Muchas zonas de Europa se han caracterizado en los dos últimos siglos a través de la actividad industrial. Los edificios industriales son tanto el testimonio del desarrollo económico y social como la expresión de la identidad regional. Conservándolos y haciendo de ellos algo útil para la población se consigue mantener vivo un importante aspecto de la historia europea, creando una base potencial para un nuevo desarrollo económico y regional. El patrimonio industrial ofrece muchas oportunidades como recurso turístico y hay muchos ejemplos al respecto en Europa: museos, centros culturales y de interpretación se han abierto en viejas fábricas ya abandonadas.Many areas of Europe have been characterised in recent centuries by industrial activity. Industrial buildings are both the witness of economic and social development and the expression of regional identity. Preserving them and making them available to the population helps to keep this important aspect of European history alive, and creates a potential basis for new economic and regional development. Industrial heritage offers many opportunities as a tourist resource and there are numerous examples in Europe: museums, cultural and interpretation centres have been created in old abandoned faetones.

  18. Representaciones sociales sobre las personas sin hogar: una herencia aún no superada (Social representations on homeless persons: an inheritance still not overcome

    Directory of Open Access Journals (Sweden)

    María José Rubio-Martín

    2017-06-01

    Full Text Available El objetivo de este artículo es conocer las representaciones sociales sobre las PSH a principios del siglo XX. Partiendo de una metodología cualitativa, se hizo una recopilación y análisis de prensa. Basando esta estrategia en la incidencia que los medios de comunicación tienen en las representaciones sociales. El marco teórico partió de las teorías sobre las nuevas estrategias de criminalización del sinhogarismo. En los resultados se resalta cómo siguen vivas viejas representaciones estigmatizadoras y excluyentes. Lo que debe ser considerado en las políticas públicas en un contexto de profunda crisis y vulnerabilidad socioeconómica. | The objective of this article is to know the social representations about the Homeless People in the early twentieth century. Starting from a qualitative methodology, a compilation and analysis of the press was made. Basing this strategy on the impact that the media have on social representations. The theoretical framework started from theories about the new strategies of criminalization of homelessness. The results highlight how old and stigmatizing and excluding representations are still alive. What should be considered in public policies in a context of deep crisis and socio-economic vulnerability.

  19. La dimensión cognitiva de las emociones en la vida moral: los aportes de Martha Nussbauma al estado actual de la discusión

    Directory of Open Access Journals (Sweden)

    Ivan Alfonso Pinedo Cantillo

    2017-07-01

    Full Text Available La relación entre emociones y vida moral constituye hoy en día un amplio campo de investigación en filosofía y psicología. Al respecto, Martha Nussbaum ofrece importantes puntos de reflexión que nos llevan a preguntarnos por aquellas facultades cognitivas que estructuran las emociones morales, como la compasión, y diferencian radicalmente la expresión emocional humana de la de animales no humanos. La inclusión de creencias y actos valorativos como elementos constitutivos de las emociones morales hacen que la propuesta de Nussbaum se oriente hacia una disolución de la vieja dicotomía moderna entre razón y emoción, a la vez que posibilita una mejor comprensión del valor ético de las emociones como informadoras de vulnerabilidad y daño moral. De esta manera, la perspectiva cognitivo-evaluadora de Nussbaum ingresa a la actual discusión sobre cómo las emociones pueden influir en nuestros juicios y decisiones morales en medio de un mundo conflictivo, inequitativo y que genera sufrimiento, pero que, no obstante, tiene aún posibilidades de consolidar sociedades justas, democráticas y plurales.

  20. En busca de ideales educativos postipográficos

    Directory of Open Access Journals (Sweden)

    Michael Giesecke

    2009-01-01

    Full Text Available El cambio cultural es el resultado de procesos conservativos, reformadores y revolucionarios, destructores de viejas estructuras. El intento de preservar en el siglo XXI los ideales de la cultura del libro y de optimizar estructuras existentes por medio de la digitalización, el e-learning y la interconexión electrónica, parece algo inevitable. Sin embargo, desvía la atención de las potencialidades reales de los nuevos medios. Es necesario acuñar una comprensión fundamentalmente nueva de la comunicación, el saber y el procesamiento de la información. Pero si el nuevo aprendizaje y el nuevo pensamiento no son simplemente la continuación del modelo de aprendizaje de los últimos 500 años, y si los nuevos medios no representan sólo una mutación electrónica del libro, al tiempo que se mantienen atados al ideal de procesamiento paralelo de informaciones de baja interacción, ¿en qué puede consistir ese nuevo aprendizaje? ¿Qué aspecto deben tener las informaciones y las estrategias de pensamiento que en lo posible no pretenden validez general alguna y aun así se hacen culturalmente relevantes?.

  1. COMUNICACIÓN EN SALUD: EL PAPEL DE LOS AGENTES COMUNITARIOS DE SALUD

    Directory of Open Access Journals (Sweden)

    Rose Marie INOJOSA

    2007-11-01

    Full Text Available El objetivo es reflejar en el papel de los agentes communitarios de la salud en la comunicación en salud. Los modelos del equipo y de la familia están en la transformación en la sociedad. Requieren nuevas formas de comunicación, capaces de comtemplar esta dinámica, la movilidad y las interacciones de los papeles sociales. Lo Programa de Salud de la Família (PSF busca hacer una inversión importante en la lógica y en las prácticas implicadas en el proceso de la producción de la salud, trabajando con las familias y los equipos como protagonistas, en un plan horizontal. El Programa encuentra, en este proceso, las trampas de los hábitos de las viejas organizaciones. La comunicación autoritaria construye paredes entre los ciudadanos. El Programa encuentra, también, la influencia del marketing en la comunicación diaria. Sin embargo carga posibilidades innumerables para generar comprensión, confianza y solidaridad. Algunas posibilidades habían sido intentadas y evaluadas ya. Reiteran la capacidad del modelo del PSF en ocuparse de la dinámica del contemporáneo de la sociedad.

  2. Contribution à la connaissance de la permanence ursine dans les diverses manifestations culturelles, cultuelles et festives dans le périmètre de l´ancienne province romain de Novempopulaine

    Directory of Open Access Journals (Sweden)

    Truffaut, T.

    2010-01-01

    Full Text Available Este artículo quiere ser una contribución al conocimiento de los estudios sobre el "oso" en la vieja Europa, y más concretamente en la zona de la "Novempopulania". Esta región inscrita en la Aquitania Romana fue instaurada en el siglo II de nuestra era y está carazterizada principalmente por la influencia lingüística del euskara presente en la toponimia y el sustrato lingüístico conservado tanto en el gascón como en el bearnés, ambos dialectos del occitano. El estudio de la presencia del oso será abordado tomando como base diversas fuentes culturales, religiosas y festivas de esta zona, tanto antiguas como contemporáneas, a través de cuatro temáticas relevantes y representativas: -La importancia de las reprentaciones de osos en el arte prehistórico. -La presencia significativa del oso en la evangelización del arzobispado de Auch. -El oso y el hombre salvaje en las creencias, cuentos, leyendas y relatos de estas comarcas, concretamente en los relatos de caza, y el calendario. -La arraigada costumbre de disfrazarse de oso en las diversas manifestaciones invernales y carnavalescas.

  3. Bidirectional relations between work-related stress, sleep quality and perseverative cognition.

    Science.gov (United States)

    Van Laethem, Michelle; Beckers, Debby G J; Kompier, Michiel A J; Kecklund, Göran; van den Bossche, Seth N J; Geurts, Sabine A E

    2015-11-01

    In this longitudinal two-wave study, bidirectional relations between work-related stress and sleep quality were examined. Moreover, it was investigated whether perseverative cognition is a potential underlying mechanism in this association, related to both work-related stress and sleep quality. A randomly selected sample of Dutch employees received an online survey in 2012 and 2013. Of all invited employees, 877 participated in both waves. Structural equation modeling was performed to analyze the data. We found evidence for reversed relations between work-related stress and sleep quality. Specifically, when controlling for perseverative cognition, work-related stress was not directly related to subsequent sleep quality, but low sleep quality was associated with an increase in work-related stress over time. Moreover, negative bidirectional associations over time were found between perseverative cognition and sleep quality, and positive bidirectional associations were found between work-related stress and perseverative cognition. Lastly, a mediation analysis showed that perseverative cognition fully mediated the relationship between work-related stress and sleep quality. The study findings suggest that perseverative cognition could be an important underlying mechanism in the association between work-related stress and sleep quality. The bidirectionality of the studied relationships could be an indication of a vicious cycle, in which work-related stress, perseverative cognition, and sleep quality mutually influence each other over time. Copyright © 2015 Elsevier Inc. All rights reserved.

  4. Is there a map between Galilean relativity and special relativity?

    OpenAIRE

    Shariati, Ahmad; Jafari, N.

    2014-01-01

    Mandanici has provided a map which he claims to be a two way map between Galilean relativity and special relativity. We argue that this map is simply a curvilinear coordinate system on a subset of the two-dimensional Minkowski space-time, and is not a two way map between 1+1 dimensional Galilean relativity and 1+1 dimensional special relativity.

  5. Les paysages périurbains montagnards à la croisée des regards des sciences écologiques et des sciences socio-économiques

    Directory of Open Access Journals (Sweden)

    Nathalie Bertrand

    2009-06-01

    Full Text Available Les mutations des paysages régionaux dues aux pressions urbaines questionnent l’usage du sol. Elles interpellent à la fois des enjeux économiques, sociaux et environnementaux voire spatiaux sous-tendus par l’étalement urbain, l’accroissement des déplacements domicile-travail, le mitage de l’espace. Ces évolutions et dysfonctionnements renvoient à la question de la durabilité du développement des régions, et particulièrement des Alpes, espace contraint géographiquement et objet de nombreuses pressions anthropiques et riche en biotopes remarquables. Cet article est basé sur deux ans de travaux menés par des socio-économistes et des écologues sur les effets sur le paysage et l’environnement de la périurbanisation d’un massif alpin. Nous avons pris en compte l’espace dans les processus environnementaux, économiques ou sociaux. Intrinsèque dans les analyses écologiques, elle a longtemps posé problème à l’économie pour intégrer l’espace comme dimension à part entière des processus économiques. Trois thèmes sont ici développés : l’approche du point de vue du paysage, les problèmes d’échelles spatiales et temporelles, le choix d’indicateurs. Ils demandent de hiérarchiser les questions et de pratiquer le travail en commun. Aller au-delà nécessite de développer une interrogation plus écologique ou plus économique et/ou sociale en quittant de ce fait l’interface pour favoriser des interrogations disciplinaires particulières.Changes in regional landscapes due to urban pressures raise questions regarding land use. They also give rise to economic, social and environmental issues related to urban sprawl, increases in daily commuting, and land consumption. These changes and dysfunctions are ultimately underpinned by the question of sustainable regional development. Mountain regions such as the Alps, with their various outstanding biotopes in a restricted space, are particularly vulnerable.

  6. Periurban landscapes in mountain areas

    Directory of Open Access Journals (Sweden)

    Nathalie Bertrand

    2009-06-01

    Full Text Available Les mutations des paysages régionaux dues aux pressions urbaines questionnent l’usage du sol. Elles interpellent à la fois des enjeux économiques, sociaux et environnementaux voire spatiaux sous-tendus par l’étalement urbain, l’accroissement des déplacements domicile-travail, le mitage de l’espace. Ces évolutions et dysfonctionnements renvoient à la question de la durabilité du développement des régions, et particulièrement des Alpes, espace contraint géographiquement et objet de nombreuses pressions anthropiques et riche en biotopes remarquables. Cet article est basé sur deux ans de travaux menés par des socio-économistes et des écologues sur les effets sur le paysage et l’environnement de la périurbanisation d’un massif alpin. Nous avons pris en compte l’espace dans les processus environnementaux, économiques ou sociaux. Intrinsèque dans les analyses écologiques, elle a longtemps posé problème à l’économie pour intégrer l’espace comme dimension à part entière des processus économiques. Trois thèmes sont ici développés : l’approche du point de vue du paysage, les problèmes d’échelles spatiales et temporelles, le choix d’indicateurs. Ils demandent de hiérarchiser les questions et de pratiquer le travail en commun. Aller au-delà nécessite de développer une interrogation plus écologique ou plus économique et/ou sociale en quittant de ce fait l’interface pour favoriser des interrogations disciplinaires particulières.Changes in regional landscapes due to urban pressures raise questions regarding land use. They also give rise to economic, social and environmental issues related to urban sprawl, increases in daily commuting, and land consumption. These changes and dysfunctions are ultimately underpinned by the question of sustainable regional development. Mountain regions such as the Alps, with their various outstanding biotopes in a restricted space, are particularly vulnerable.

  7. The relation between herbivore density and relative resource ...

    African Journals Online (AJOL)

    The relation between kudu density and the relative density of habitat patches in each landscape was significant, with exponential models producing more significant statistics than linear models. Regressions of resource density against animal density are useful to understand 'carrying capacity' for wild herbivores, and ...

  8. Un protocole pour la modélisation du fonctionnement des stations d'épuration à boues activées GMP Protocol for activated sludge models

    Directory of Open Access Journals (Sweden)

    GILLOT, Sylvie ; LANGERGRABER, Günter ; OHTSUKI, Takayuki ; SHAW, Andrew ; TAKACS, Imre ; WINKLER, Stefan ; RIEGER, Leiv

    2012-12-01

    Full Text Available Les stations d’épuration sont des systèmes dynamiques, soumis à d’importantes variations temporelles. La modélisation de leur fonctionnement, qui consiste à représenter mathématiquement l’évolution dans le temps de variables d’intérêt représentant les phénomènes biologiques, physiques et chimiques qui se déroulent dans les ouvrages, est utilisée pour mieux comprendre les processus mis en jeu et optimiser le traitement des eaux résiduaires.. Focus sur les activités du groupe de travail Good Modelling Practice de l’IWA, auquel participe activement les équipes d’Irstea, notamment dans l’élaboration d’un protocole pour l’utilisation des modèles de boues activées en pratique.The IWA Task Group on Good Modelling Practice (GMP has analysed current practice and experience on the use of activated sludge models. The group developed a framework to make modelling more straightforward and that helps structuring the interaction between modellers and the project stakeholders. The GMP protocol is a synthesis of existing procedures, and contains five major steps: (i Project definition, (ii Data collection and reconciliation, (iii Plant model set-up, (iv Calibration and validation, and (v Simulation and result interpretation. The Unified Protocol forms the basis of a Scientific and Technical Report that will be published in late 2012.

  9. Thermoluminescence du quartz naturel et artificiel pur ou dopé des ions Fe++ et Fe+++: application à la datation des poteries

    Directory of Open Access Journals (Sweden)

    1978-01-01

    Full Text Available La thermoluminescence constatée sur les échantillons de poteries et conduisant à la datation archéologique de celles-ci, est due aux inclusions de quartz initialement contenues dans l'argile. Nous présentons une étude de la thermoluminescence d'échantillons de quartz monocristallin synthétique dans lesquels des impuretés ont été volontairement ajoutées et appliquons les résultats à une nouvelle technique de datation, la méthode DATE (différence d'atténuation temporelle des émissions. La termoluminiscencia constatada en muestras de cerámica permite una datación arqueológica es debida a las inclusiones de cuarzo inicialmente contenidas en la arcilla. Se presenta un estudio de la termoluminiscencia de muestras de cuarzo monocristalino sintético en las cuales han sido colocadas voluntariamente impurezas se han aplicado los resultados de una nueva técnica de fechado, el método DATE (Diferencia de atenuación temporal de emisiones. The thermoluminescence observed on samples of pottery and leading to their archaeological dating is a result of the presence of quartz particles originally enclosed in the clay. We offer a study of the termoluminescence of samples of synthetic mono-crystalline quartz doped in with impurities and apply the results to a new dating technique, the 'DATE' method, based upon difference in time attenuation of the emissions.

  10. Les effets géographiques des éruptions volcaniques

    Directory of Open Access Journals (Sweden)

    Franck Lavigne

    2010-12-01

    Full Text Available Les méthodes de réflexion géographique permettent d’appréhender efficacement les jeux d’échelles et les temporalités multiples des effets induits par les éruptions volcaniques. L’objectif de cette synthèse est ainsi de comprendre les espaces volcaniques en tant qu’objets géographiques, en replaçant les impacts des éruptions au cœur d’une étude spatiale et temporelle. Les impacts de tels événements imposent des recompositions spatiales à l’échelle du volcan lui-même, et, dans le cas d’éruptions de plus grande magnitude, peuvent avoir des conséquences à l’échelle régionale voire mondiale. Les divers exemples abordés ici mettent l’accent sur les risques, la vulnérabilité et la résilience des populations vivant sur ces espaces marqués par les aléas volcaniques.The purpose of this paper aims to study the volcanic areas as geographical objects. Geographical analyses help to understand at different scales the levels of impacts induced by volcanic eruptions. Impacts of such events trigger spatial changes across the volcano itself, and can have consequences at regional or even global level in case of outbreaks of greater magnitude. The various examples discussed here focus on hazards, vulnerability and resilience of people living in those volcanic-hazard prone areas.

  11. Special relativity

    International Nuclear Information System (INIS)

    French, A.P.

    1982-01-01

    This book is an introduction to special relativity theory. After a discussion of the limits of Newton's mechanics and the pecularities in the propagation of light the Lorentz transformation is introduced. Then the measurement of space and time intervals in the framework of relativity theory is considered. Thereafter the addition of velocities and acceleration are considered in this framework. Then relativistic kinematics of particle interactions are described. Then the four-dimensional calculus in space-time coordinates is introduced. Finally an introduction is given to the treatment of the electromagnetic field in the framework of relativity theory. Every chapter contains exercise problems with solutions. This book is suited for all students who want to get some fundamental knowledge about relativity theory. (HSI) [de

  12. Priming performance-related concerns induces task-related mind-wandering.

    Science.gov (United States)

    Jordano, Megan L; Touron, Dayna R

    2017-10-01

    Two experiments tested the hypothesis that priming of performance-related concerns would (1) increase the frequency of task-related mind-wandering (i.e., task-related interference; TRI) and (2) decrease task performance. In each experiment, sixty female participants completed an operation span task (OSPAN) containing thought content probes. The task was framed as a math task for those in a condition primed for math-related stereotype threat and as a memory task for those in a control condition. In both studies, women whose performance-related concerns were primed via stereotype threat reported more TRI than women in the control. The second experiment used a more challenging OSPAN task and stereotype primed women also had lower math accuracy than controls. These results support the "control failures×current concerns" framework of mind-wandering, which posits that the degree to which the environmental context triggers personal concerns influences both mind-wandering frequency and content. Copyright © 2017 Elsevier Inc. All rights reserved.

  13. International Relations

    OpenAIRE

    McGlinchey, S.

    2017-01-01

    A ‘Day 0’ introduction to International Relations for beginners. Written by a range of emerging and established experts, the chapters offer a broad sweep of the basic components of International Relations and the key contemporary issues that concern the discipline. The narrative arc forms a complete circle, taking readers from no knowledge to competency. The journey starts by examining how the international system was formed and ends by reflecting that International Relations is always adapti...

  14. Relationalism or why diplomats find international relations theory strange

    DEFF Research Database (Denmark)

    Adler-Nissen, Rebecca

    2015-01-01

    In this conclusion, which reflects critically on the relational approach to diplomacy and its wider consequences, I argue that diplomats are estranged from IR theory and vice versa - because International Relations scholars generally subscribe to substantialism, whereas diplomats tend to think...... by diplomatic scholars). Relationalism takes as its point of departure the idea that social phenomena making up world politics always develop in relation to other social phenomena. Thus, for example, states are not born into' this world as fully developed states that then "exist"; states are made in continuous...... scholarship and diplomatic knowledge and practice are important for how we understand (and construct) world politics, including war, international cooperation, and responses to human and natural catastrophes....

  15. Bidirectional relations between work-related stress, sleep quality and perseverative cognition

    NARCIS (Netherlands)

    Laethem, M. van; Beckers, D.G.J.; Kompier, M.A.J.; Kecklund, L.G.; Bossche, S.N.J. van den; Geurts, S.A.E.

    2015-01-01

    Objective In this longitudinal two-wave study, bidirectional relations between work-related stress and sleep quality were examined. Moreover, it was investigated whether perseverative cognition is a potential underlying mechanism in this association, related to both work-related stress and sleep

  16. El bastón de la vieja. " La niña de las rastas, el niño de la cresta"

    OpenAIRE

    Gallego Martínez, Armando; Perís Girona, Juan Luis

    2014-01-01

    Treball Final de Grau en Comunicació Audiovisual. Codi: Curs: 2013/2014 se realizará un informe que recoja de forma breve los objetivos que se pretendían alcanzar, la metodología empleada, así como la estructura del propio trabajo, los principales resultados alcanzados y las conclusiones más relevantes. Además, se ha realizado tanto en español como en inglés, parte que se encuentra justo a continuación del informeresumen en español. Se estableció como objetivo principal d...

  17. Relativity

    CERN Document Server

    Einstein, Albert

    2013-01-01

    Time magazine's ""Man of the Century"", Albert Einstein is the founder of modern physics and his theory of relativity is the most important scientific idea of the modern era. In this short book, Einstein explains, using the minimum of mathematical terms, the basic ideas and principles of the theory that has shaped the world we live in today. Unsurpassed by any subsequent books on relativity, this remains the most popular and useful exposition of Einstein's immense contribution to human knowledge.With a new foreword by Derek Raine.

  18. Class dependency of fuzzy relational database using relational calculus and conditional probability

    Science.gov (United States)

    Deni Akbar, Mohammad; Mizoguchi, Yoshihiro; Adiwijaya

    2018-03-01

    In this paper, we propose a design of fuzzy relational database to deal with a conditional probability relation using fuzzy relational calculus. In the previous, there are several researches about equivalence class in fuzzy database using similarity or approximate relation. It is an interesting topic to investigate the fuzzy dependency using equivalence classes. Our goal is to introduce a formulation of a fuzzy relational database model using the relational calculus on the category of fuzzy relations. We also introduce general formulas of the relational calculus for the notion of database operations such as ’projection’, ’selection’, ’injection’ and ’natural join’. Using the fuzzy relational calculus and conditional probabilities, we introduce notions of equivalence class, redundant, and dependency in the theory fuzzy relational database.

  19. Special relativity, electrodynamics, and general relativity from Newton to Einstein

    CERN Document Server

    Kogut, John B

    2018-01-01

    Special Relativity, Electrodynamics and General Relativity: From Newton to Einstein, Second Edition, is intended to teach (astro)physics, astronomy, and cosmology students how to think about special and general relativity in a fundamental, but accessible, way. Designed to render any reader a "master of relativity," everything on the subject is comprehensible and derivable from first principles. The book emphasizes problem solving, contains abundant problem sets, and is conveniently organized to meet the needs of both student and instructor. Fully revised, updated and expanded second edition Includes new chapters on magnetism as a consequence of relativity and electromagnetism Contains many improved and more engaging figures Uses less algebra resulting in more efficient derivations Enlarged discussion of dynamics and the relativistic version of Newton's second law

  20. La contrainte client

    Directory of Open Access Journals (Sweden)

    Guillaume Tiffon

    2011-04-01

    Full Text Available Cet article montre que le contact client a beau être ambivalent, dans la mesure où il est à la fois source de contrainte et de reconnaissance, dans certains cas, comme celui des caissières, il constitue avant tout une contrainte, en ce que les clients contrôlent le travail qui s’opère « sous leurs yeux », tandis que, dans d’autres cas, comme celui des kinésithérapeutes, il contribue avant tout à donner du sens au travail et, par là, à susciter l’engagement des travailleurs. L’article souligne ainsi combien la contrainte client revêt des modalités différentes selon la configuration, spatiale et temporelle, dans laquelle se déroule la relation de service, et le différentiel de compétences entre les protagonistes engagés dans cette relation.The client constraint. A comparative analysis of cashiers and physiotherapistsThis article shows that despite the ambivalence of client contact, insofar as it is both a source of constraint and recognition, in some cases, as the ones of cashiers, it isprimarily a constraint: clients control the work that takes place “before their eyes”, whereas in other cases – as in the ones of physiotherapists – it contributes to give meaning to work and, thereby, to arouse the commitment of workers. The article highlights how the client constraint takes on different forms depending on thespatial and temporal configuration where the service relation runs, and the skills differential between the protagonists involved in this relation.El apremio de los clientes. Análisis comparativo entre las cajeras de supermercado y los kinesiterapeutasEn este artículo se demuestra que aunque el contacto con los clientes puede ser percibido como agradable, en realidad en la mayoría de los casos el cliente es percibido como un peso puesto que estos « controlan » visualmente el trabajo de las cajeras mientras que en otras profesiones como es el caso de los kinesiterapeutas la presencia del paciente

  1. Mindfulness mediates the relation between disordered eating-related cognitions and psychological distress.

    Science.gov (United States)

    Masuda, Akihiko; Wendell, Johanna W

    2010-12-01

    The present study investigated whether mindfulness mediates the relation between disordered eating-related cognitions and negative psychological outcomes within a non-clinical college sample. Disordered eating-related cognitions were positively associated with general psychological ill-health and emotional distress in interpersonal contexts and inversely related to mindfulness. Mindfulness, which was also inversely related to general psychological ill-health and emotional distress, was found to partially mediate the relations between disordered eating-related cognitions and the two predicted variables. Copyright © 2010 Elsevier Ltd. All rights reserved.

  2. The principle of relativity and the indeterminacy of special relativity

    Science.gov (United States)

    de Abreu, Rodrigo; Guerra, Vasco

    2008-01-01

    This work ends a trilogy devoted to a journey into the foundations of special relativity. The first paper debated the meaning of the constancy of the two-way speed of light and its close relation to the conceptualization of time. The second one addressed the question of the possible constancy of the one-way speed of light and the trivial—but, unfortunately, even now somewhat controversial—question of the compatibility between the assumption of a special system of reference and Einstein's special relativity. The present study deals with the principle of relativity. Its historical evolution is reviewed and a 'weak' formulation is defended. It is emphasized that many assertions usually associated with special relativity, such as the 'relativity of time dilation' and 'relativity of space contraction' are indeed philosophical statements, as it has been established already by several authors in the past. Nonetheless, most teachers and scientists still believe nowadays they are implied by the theory and by the group property of the Lorentz transformation. This is by no means so, as it is reviewed and elucidated with the simple example on space contraction. It is argued that the lack of knowledge of the true value of the one-way speed of light in empty space leaves the theory undetermined. Einstein's special relativity corresponds to a simple and very elegant solution to this problem, allowing the study of relative motion without any concern with the study of absolute motion, which is considered to be superfluous. However, its standard interpretation is minimalist and even misleading. A large number of researchers have discussed this question, mostly within the conventionality of simultaneity thesis. The typical formulation of this thesis provides some new physical insight and points out the problem, but does not solve it. In contrast, it often leads to a labyrinth of difficult language which is herein clarified.

  3. The principle of relativity and the indeterminacy of special relativity

    International Nuclear Information System (INIS)

    Abreu, Rodrigo de; Guerra, Vasco

    2008-01-01

    This work ends a trilogy devoted to a journey into the foundations of special relativity. The first paper debated the meaning of the constancy of the two-way speed of light and its close relation to the conceptualization of time. The second one addressed the question of the possible constancy of the one-way speed of light and the trivial-but, unfortunately, even now somewhat controversial-question of the compatibility between the assumption of a special system of reference and Einstein's special relativity. The present study deals with the principle of relativity. Its historical evolution is reviewed and a 'weak' formulation is defended. It is emphasized that many assertions usually associated with special relativity, such as the 'relativity of time dilation' and 'relativity of space contraction' are indeed philosophical statements, as it has been established already by several authors in the past. Nonetheless, most teachers and scientists still believe nowadays they are implied by the theory and by the group property of the Lorentz transformation. This is by no means so, as it is reviewed and elucidated with the simple example on space contraction. It is argued that the lack of knowledge of the true value of the one-way speed of light in empty space leaves the theory undetermined. Einstein's special relativity corresponds to a simple and very elegant solution to this problem, allowing the study of relative motion without any concern with the study of absolute motion, which is considered to be superfluous. However, its standard interpretation is minimalist and even misleading. A large number of researchers have discussed this question, mostly within the conventionality of simultaneity thesis. The typical formulation of this thesis provides some new physical insight and points out the problem, but does not solve it. In contrast, it often leads to a labyrinth of difficult language which is herein clarified

  4. Hospital-physician relations: the relative importance of economic, relational and professional attributes to organizational attractiveness

    Science.gov (United States)

    2014-01-01

    Background Belgian hospitals face a growing shortage of physicians and increasingly competitive market conditions. In this challenging environment hospitals are struggling to build effective hospital-physician relationships which are considered to be a critical determinant of organizational success. Methods Employed physicians of a University hospital were surveyed. Organizational attributes were identified through the literature and two focus groups. Variables were measured using validated questionnaires. Descriptive analyses and linear regression were used to test the model and relative importance analyses were performed. Results The selected attributes predict hospital attractiveness significantly (79.3%). The relative importance analysis revealed that hospital attractiveness is most strongly predicted by professional attributes (35.3%) and relational attributes (29.7%). In particular, professional development opportunities (18.8%), hospital prestige (16.5%), organizational support (17.2%) and leader support (9.3%) were found to be most important. Besides these non-economic aspects, the employed physicians indicated pay and financial benefits (7.4%) as a significant predictor of hospital attractiveness. Work-life balance and job security were not significantly related to hospital attractiveness. Conclusions This study shows that initiatives aimed at strengthening physicians’ positive perceptions of professional and relational aspects of practicing medicine in hospitals, while assuring satisfactory financial conditions, may offer useful avenues for increasing the level of perceived hospital attractiveness. Overall, hospitals are advised to use a differentiated approach to increase their attractiveness to physicians. PMID:24884491

  5. Hospital-physician relations: the relative importance of economic, relational and professional attributes to organizational attractiveness.

    Science.gov (United States)

    Trybou, Jeroen; Gemmel, Paul; Van Vaerenbergh, Yves; Annemans, Lieven

    2014-05-21

    Belgian hospitals face a growing shortage of physicians and increasingly competitive market conditions. In this challenging environment hospitals are struggling to build effective hospital-physician relationships which are considered to be a critical determinant of organizational success. Employed physicians of a University hospital were surveyed. Organizational attributes were identified through the literature and two focus groups. Variables were measured using validated questionnaires. Descriptive analyses and linear regression were used to test the model and relative importance analyses were performed. The selected attributes predict hospital attractiveness significantly (79.3%). The relative importance analysis revealed that hospital attractiveness is most strongly predicted by professional attributes (35.3%) and relational attributes (29.7%). In particular, professional development opportunities (18.8%), hospital prestige (16.5%), organizational support (17.2%) and leader support (9.3%) were found to be most important. Besides these non-economic aspects, the employed physicians indicated pay and financial benefits (7.4%) as a significant predictor of hospital attractiveness. Work-life balance and job security were not significantly related to hospital attractiveness. This study shows that initiatives aimed at strengthening physicians' positive perceptions of professional and relational aspects of practicing medicine in hospitals, while assuring satisfactory financial conditions, may offer useful avenues for increasing the level of perceived hospital attractiveness. Overall, hospitals are advised to use a differentiated approach to increase their attractiveness to physicians.

  6. NgsRelate

    DEFF Research Database (Denmark)

    Korneliussen, Thorfinn Sand; Moltke, Ida

    2015-01-01

    . Using both simulated and real data, we show that NgsRelate provides markedly better estimates for low-depth NGS data than two state-of-the-art genotype-based methods. AVAILABILITY: NgsRelate is implemented in C++ and is available under the GNU license at www.pop gen.dk/software. CONTACT: ida...... be called with high certainty. RESULTS: We present a software tool, NgsRelate, for estimating pairwise relatedness from NGS data. It provides maximum likelihood estimates that are based on genotype likelihoods instead of genotypes and thereby takes the inherent uncertainty of the genotypes into account...

  7. General relativity

    International Nuclear Information System (INIS)

    Kenyon, I.R.

    1990-01-01

    General relativity is discussed in this book at a level appropriate to undergraduate students of physics and astronomy. It describes concepts and experimental results, and provides a succinct account of the formalism. A brief review of special relativity is followed by a discussion of the equivalence principle and its implications. Other topics covered include the concepts of curvature and the Schwarzschild metric, test of the general theory, black holes and their properties, gravitational radiation and methods for its detection, the impact of general relativity on cosmology, and the continuing search for a quantum theory of gravity. (author)

  8. Linguistic relativity.

    Science.gov (United States)

    Wolff, Phillip; Holmes, Kevin J

    2011-05-01

    The central question in research on linguistic relativity, or the Whorfian hypothesis, is whether people who speak different languages think differently. The recent resurgence of research on this question can be attributed, in part, to new insights about the ways in which language might impact thought. We identify seven categories of hypotheses about the possible effects of language on thought across a wide range of domains, including motion, color, spatial relations, number, and false belief understanding. While we do not find support for the idea that language determines the basic categories of thought or that it overwrites preexisting conceptual distinctions, we do find support for the proposal that language can make some distinctions difficult to avoid, as well as for the proposal that language can augment certain types of thinking. Further, we highlight recent evidence suggesting that language may induce a relatively schematic mode of thinking. Although the literature on linguistic relativity remains contentious, there is growing support for the view that language has a profound effect on thought. WIREs Cogni Sci 2011 2 253-265 DOI: 10.1002/wcs.104 For further resources related to this article, please visit the WIREs website. Copyright © 2010 John Wiley & Sons, Ltd.

  9. General Relativity

    CERN Document Server

    Straumann, Norbert

    2013-01-01

    This book provides a completely revised and expanded version of the previous classic edition ‘General Relativity and Relativistic Astrophysics’. In Part I the foundations of general relativity are thoroughly developed, while Part II is devoted to tests of general relativity and many of its applications. Binary pulsars – our best laboratories for general relativity – are studied in considerable detail. An introduction to gravitational lensing theory is included as well, so as to make the current literature on the subject accessible to readers. Considerable attention is devoted to the study of compact objects, especially to black holes. This includes a detailed derivation of the Kerr solution, Israel’s proof of his uniqueness theorem, and a derivation of the basic laws of black hole physics. Part II ends with Witten’s proof of the positive energy theorem, which is presented in detail, together with the required tools on spin structures and spinor analysis. In Part III, all of the differential geomet...

  10. Dynamics of relative motion of test particles in general relativity

    International Nuclear Information System (INIS)

    Bazanski, S.L.

    1977-01-01

    Several variational principles which lead to the first and the second geodesic deviation equations, recently formulated by the author and used for the description of the relative motion of test particles in general relativity are presented. Relations between these principles are investigated and exhibited. The Hamilton-Jacobi equation is also studied for these generalized deviations and the conservation laws appearing here are discussed

  11. Macular xanthophylls, lipoprotein-related genes, and age-related macular degeneration.

    Science.gov (United States)

    Koo, Euna; Neuringer, Martha; SanGiovanni, John Paul

    2014-07-01

    Plant-based macular xanthophylls (MXs; lutein and zeaxanthin) and the lutein metabolite meso-zeaxanthin are the major constituents of macular pigment, a compound concentrated in retinal areas that are responsible for fine-feature visual sensation. There is an unmet need to examine the genetics of factors influencing regulatory mechanisms and metabolic fates of these 3 MXs because they are linked to processes implicated in the pathogenesis of age-related macular degeneration (AMD). In this work we provide an overview of evidence supporting a molecular basis for AMD-MX associations as they may relate to DNA sequence variation in AMD- and lipoprotein-related genes. We recognize a number of emerging research opportunities, barriers, knowledge gaps, and tools offering promise for meaningful investigation and inference in the field. Overviews on AMD- and high-density lipoprotein (HDL)-related genes encoding receptors, transporters, and enzymes affecting or affected by MXs are followed with information on localization of products from these genes to retinal cell types manifesting AMD-related pathophysiology. Evidence on the relation of each gene or gene product with retinal MX response to nutrient intake is discussed. This information is followed by a review of results from mechanistic studies testing gene-disease relations. We then present findings on relations of AMD with DNA sequence variants in MX-associated genes. Our conclusion is that AMD-associated DNA variants that influence the actions and metabolic fates of HDL system constituents should be examined further for concomitant influence on MX absorption, retinal tissue responses to MX intake, and the capacity to modify MX-associated factors and processes implicated in AMD pathogenesis. © 2014 American Society for Nutrition.

  12. Relativity without relativity

    International Nuclear Information System (INIS)

    Barbour, Julian; Foster, Brendan Z; Murchadha, Niall O

    2002-01-01

    We give a derivation of general relativity (GR) and the gauge principle that is novel in presupposing neither spacetime nor the relativity principle. We consider a class of actions defined on superspace (the space of Riemannian 3-geometries on a given bare manifold). It has two key properties. The first is symmetry under 3-diffeomorphisms. This is the only postulated symmetry, and it leads to a constraint linear in the canonical momenta. The second property is that the Lagrangian is constructed from a 'local' square root of an expression quadratic in the velocities. The square root is 'local' because it is taken before integration over 3-space. It gives rise to quadratic constraints that do not correspond to any symmetry and are not, in general, propagated by the Euler-Lagrange equations. Therefore these actions are internally inconsistent. However, one action of this form is well behaved: the Baierlein-Sharp-Wheeler (Baierlein R F, Sharp D and Wheeler J A 1962 Phys. Rev. 126 1864) reparametrization-invariant action for GR. From this viewpoint, spacetime symmetry is emergent. It appears as a 'hidden' symmetry in the (underdetermined) solutions of the Euler-Lagrange equations, without being manifestly coded into the action itself. In addition, propagation of the linear diffeomorphism constraint together with the quadratic square-root constraint acts as a striking selection mechanism beyond pure gravity. If a scalar field is included in the configuration space, it must have the same characteristic speed as gravity. Thus Einstein causality emerges. Finally, self-consistency requires that any 3-vector field must satisfy Einstein causality, the equivalence principle and, in addition, the Gauss constraint. Therefore we recover the standard (massless) Maxwell equations

  13. « L'île du soleil » : une parenthèse de temporalité insolite The « Island of the Sun »: an Unusual Temporal Digression

    Directory of Open Access Journals (Sweden)

    Hélène Fragaki

    2010-12-01

    Full Text Available Dans le livre II de sa Bibliothèque historique, Diodore de Sicile raconte comment Iambule a découvert une île heureuse lors d’un voyage à travers l’Arabie. Ce récit fabuleux, qui peut être défini comme un roman utopique au sens large du terme, est donc délibérément intégré dans une œuvre qui se veut historique. Sa version originale, attribuée à Iambule, remonte à l’époque hellénistique et ne peut être postérieure au milieu du Ier s. av. J.-C., date à laquelle la Bibliothèque historique a été rédigée. Au début du roman, une série d’aventures extraordinaires anime le temps et l’éclaire d’une lueur mystérieuse en faisant intervenir des intervalles déterminés par des chiffres symboliques. On est ainsi introduit à une dimension temporelle utopique, celle de l’île heureuse : immuable, continu et homogène, le temps n’est que le support d’activités constructives, répétitives et rigoureusement rythmées ; il est dépourvu de tout aspect angoissant ou ravageur et n’amène que la croissance et la prospérité, d’autant plus que la vie est excessivement longue et la mort dédramatisée. Cette parenthèse temporelle paisible, dont la clôture est également marquée par des durées symboliques, apparaît comme une réaction à un temps réel violemment agité. Toutefois, elle n’est pas aussi statique qu’il ne paraît à première vue, dans la mesure où elle s’insère dans le mouvement de la temporalité historique et où elle est accessible par le temps bien plus turbulent de l’aventure et du voyage.In volume 2 of his book Bibliotheca Historica, Diodorus of Sicily tells the story of Iamboulos who discovered a blissful island while traveling through Arabia. This fabulous story, which can be defined as a utopian novel in the broader sense of the term, is therefore deliberately incorporated into a book which is supposed to be historical. Its original version, attributed to Iamboulos, dates

  14. Relativity simply explained

    CERN Document Server

    Gardner, Martin

    2012-01-01

    Since the publication of Einstein's Special Theory of Relativity in 1905, the discovery of such astronomical phenomena as quasars, pulsars, and black holes - all intimately connected to relativity - has provoked a tremendous upsurge of interest in the subject. This volume, a revised version of Martin Gardner's earlier Relativity for the Million, brings this fascinating topic up to date. Witty, perceptive, and easily accessible to the general reader, it is one of the clearest and most entertaining introductions to relativity ever written.

  15. Relativity and cosmology

    CERN Document Server

    Kaufmann, William J

    1973-01-01

    The foundations of gravitational theory ; the birth of relativity theory ; the foundations of general relativity ; experimental tests of relativity ; the meaning of the redshift ; the black hole ; wormholes and white holes ; galaxies and quasars ; gravitational waves ; the shape of the Universe ; the creation of the Universe.

  16. The principle of relativity and the special relativity triple

    International Nuclear Information System (INIS)

    Guo Hanying; Wu Hongtu; Zhou Bin

    2009-01-01

    Based on the principle of relativity and the postulate on universal invariant constants (c,l) as well as Einstein's isotropy conditions, three kinds of special relativity form a triple with a common Lorentz group as isotropy group under full Umov-Weyl-Fock-Lorentz transformations among inertial motions

  17. Public relations

    International Nuclear Information System (INIS)

    1998-01-01

    Public relations activities continued in a well-proved form of organizing plant visits and Information Centre off - site activities. Bohunice NPPs were visited by the number of 7294 visitors in 1997. A brief account of activities in public relations carried out by the Nuclear power plants Jaslovske Bohunice in 1997 is presented

  18. The Impact of Political Relations Between Countries on Economic Relations

    Directory of Open Access Journals (Sweden)

    Hossein Askari

    2012-09-01

    Full Text Available In this paper, we assess the implications of changes in bilateral diplomatic relations with the United States for economic relations. We identify countries whose relations with the US changed during two historic and significant milestones in the past three decades, and a third group of countries after their leftist governments failed/collapsed in early 1990s. Using the Mann-Whitney U-test, we measure the significance of changes in economic relations. We chose the following set of economic indices to reflect economic relations: imports and exports to and from the US, capital outflows from the US to the country, economic and military assistance provided by the US, flow of students to the US, US arms export to the country, the country’s military expenditures, and believing in the importance of remittances and FDI and portfolio investment we use total figures as we did not have bilateral figures. Our results, though mixed, offer some interesting insights.

  19. Relative Risk Appraisal, the September 11 Attacks, and Terrorism-Related Fears

    Science.gov (United States)

    Marshall, Randall D.; Bryant, Richard A.; Amsel, Lawrence; Suh, Eun Jung; Cook, Joan M.; Neria, Yuval

    2013-01-01

    There are now replicated findings that posttraumatic stress disorder (PTSD) symptoms related to the September 11, 2001, attacks occurred in large numbers of persons who did not fit the traditional definition of exposure to a traumatic event. These data are not explained by traditional epidemiologic “bull’s eye” disaster models, which assume the psychological effects are narrowly, geographically circumscribed, or by existing models of PTSD onset. In this article, the authors develop a researchable model to explain these and other terrorism-related phenomena by synthesizing research and concepts from the cognitive science, risk appraisal, traumatic stress, and anxiety disorders literatures. They propose the new term relative risk appraisal to capture the psychological function that is the missing link between the event and subjective response in these and other terrorism-related studies to date. Relative risk appraisal highlights the core notion from cognitive science that human perception is an active, multidimensional process, such that for unpredictable societal threats, proximity to the event is only one of several factors that influence behavioral responses. Addressing distortions in relative risk appraisal effectively could reduce individual and societal vulnerability to a wide range of adverse economic and ethnopolitical consequences to terrorist attacks. The authors present ways in which these concepts and related techniques can be helpful in treating persons with September 11– or terrorism-related distress or psychopathology. PMID:17516775

  20. Motion and relativity

    CERN Document Server

    Infeld, Leopold

    1960-01-01

    Motion and Relativity focuses on the methodologies, solutions, and approaches involved in the study of motion and relativity, including the general relativity theory, gravitation, and approximation.The publication first offers information on notation and gravitational interaction and the general theory of motion. Discussions focus on the notation of the general relativity theory, field values on the world-lines, general statement of the physical problem, Newton's theory of gravitation, and forms for the equation of motion of the second kind. The text then takes a look at the approximation meth

  1. Hostile attribution biases for relationally provocative situations and event-related potentials.

    Science.gov (United States)

    Godleski, Stephanie A; Ostrov, Jamie M; Houston, Rebecca J; Schlienz, Nicolas J

    2010-04-01

    This exploratory study investigates how hostile attribution biases for relationally provocative situations may be related to neurocognitive processing using the P300 event-related potential. Participants were 112 (45 women) emerging adults enrolled in a large, public university in upstate New York. Participants completed self-report measures on relational aggression and hostile attribution biases and performed an auditory perseveration task to elicit the P300. It was found that hostile attribution biases for relational provocation situations was associated with a larger P300 amplitude above and beyond the role of hostile attribution biases for instrumental situations, relational aggression, and gender. Larger P300 amplitude is interpreted to reflect greater allocation of cognitive resources or enhanced "attending" to salient stimuli. Implications for methodological approaches to studying aggression and hostile attribution biases and for theory are discussed, as well as implications for the fields of developmental psychology and psychopathology. Copyright 2010 Elsevier B.V. All rights reserved.

  2. Nothing but relativity

    International Nuclear Information System (INIS)

    Pal, Palash B

    2003-01-01

    We deduce the most general space-time transformation laws consistent with the principle of relativity. Thus, our result contains the results of both Galilean and Einsteinian relativity. The velocity addition law comes as a by-product of this analysis. We also argue why Galilean and Einsteinian versions are the only possible embodiments of the principle of relativity

  3. Numerical Relativity

    Science.gov (United States)

    Baker, John G.

    2009-01-01

    Recent advances in numerical relativity have fueled an explosion of progress in understanding the predictions of Einstein's theory of gravity, General Relativity, for the strong field dynamics, the gravitational radiation wave forms, and consequently the state of the remnant produced from the merger of compact binary objects. I will review recent results from the field, focusing on mergers of two black holes.

  4. Variations of relative humidity in relation to meningitis in Africa

    Science.gov (United States)

    Seefeldt, M. W.; Hopson, T. M.

    2011-12-01

    The meningitis belt is a region covering Sub-Saharan Africa from the Sahel of West Africa eastward to western Ethiopia. The region is prone to meningitis epidemics during the dry season extending from approximately January to May, depending on the region. Relative humidity has been found to be a critical environmental factor indicating the susceptibility of a region to meningitis epidemics. This study evaluates the variation of relative humidity across West Africa over 30 dry-seasons (1979 - 2009) using the NASA-MERRA dataset. The method of self-organizing maps is employed to characterize the changes in relative humidity patterns across the region within a given dry season as well as changes over the 30 years. A general pattern of changes in relative humidity is indicated as the rainbelt retreats to the south at the onset of the dry season and then returns to the region at the end of the dry season. Within each dry season there is a unique pattern. The climatological conditions of relative humidity at the onset of the dry season provide an indication of the moisture environment for the entire dry season. Year to year variation in the relative humidity patterns are found to be gradual. Future applications involve using the results from the SOM evaluation to be used for future decisions involving prevention of meningitis epidemics.

  5. Journalism of Relation

    DEFF Research Database (Denmark)

    Blaagaard, Bolette

    of cosmopolitanism from universal reproductions of sameness into creative productions of singular self-other relations based on the practiced and productive journalism. This is substantiated through case study analyses. The aim is to challenge the modern, rational journalistic subject referring back to the unified...... of the self-other relation which is simultaneously personal and political. Secondly, the dissertation relates the phenomenological ‘race’ and gender debates to the societal and productive context of contemporary European and ‘western’ globalised and mediated culture and politics. Journalism is re...... accountability and relation from journalistic training and practices whereby a ‘white’ and homogeneous social imaginary is reproduced. I make a call for thinking about journalism as relation – in terms of technological mediations, but also in terms of subjectivities. In order to allow for this, a shift is needed...

  6. Relative expression of genes related with cold tolerance in ...

    African Journals Online (AJOL)

    Low temperature is one of the main abiotic stresses affecting rice yield in Chile. Alterations in phenology and physiology of the crop are observed after a cold event. The objective of this work was to study the relative expression of genes related with cold stress in Chilean cultivars of rice. For this, we analyzed the expression ...

  7. What Are Related Disorders?

    Science.gov (United States)

    ... The Marfan Foundation Marfan & Related Disorders What is Marfan Syndrome? What are Related Disorders? What are the Signs? ... Contact Us Donate Marfan & Related Disorders What is Marfan Syndrome? What are Related Disorders? What are the Signs? ...

  8. Productivity loss at work; health-related and work-related factors.

    Science.gov (United States)

    van den Heuvel, Swenne G; Geuskens, Goedele A; Hooftman, Wendela E; Koppes, Lando L J; van den Bossche, Seth N J

    2010-09-01

    Productivity loss is an increasing problem in an aging working population that is decreasing in numbers. The aim of this study is to identify work-related and health-related characteristics associated with productivity loss, due to either sickness absence or reduced performance at work. In this cross-sectional study, data of the Netherlands Working Conditions Survey of 2007 were used, which includes a national representative sample of 22,759 employees aged 15 to 64 years. Demographic characteristics, health-related and work-related factors were assessed with a questionnaire. Logistic regression analyses were carried out to study the relationship of work-related and health-related factors with low performance at work and sickness absence in the past 12 months. Poor general health, the number of longstanding health conditions, and most types of longstanding health conditions were associated with productivity loss. Health-related factors were in general stronger associated with sickness absence than with low performance at work. Performance: poor health OR 1.54 CI 1.38-1.71, >1 health conditions OR 1.21 CI 1.09-1.35; sickness absence: poor health OR 2.62 CI 2.33-2.93, >1 health conditions OR 2.47 CI 2.21-2.75. Of the different types of longstanding health conditions, only psychological complaints and to a small extent musculoskeletal symptoms, were associated with low performance (respectively OR 1.54 CI 1.27-1.87; OR 1.09 CI 1.00-1.18). Low performance at work was less likely among employees with high physically demanding work (shift work OR 0.70 CI 0.63-0.76, using force OR 0.78 CI 0.72-0.84, and repetitive movements OR 0.74 CI 0.70-0.79). Psychosocial factors were stronger associated with low performance at work than with sickness absence (performance: job autonomy OR 1.28 CI 1.21-1.37, job demands OR 1.23 CI 1.16-1.31, emotionally demanding work OR 1.73 CI 1.62-1.85; sickness absence: job autonomy ns, job demands OR 1.09 CI 1.03-1.17, emotionally demanding work OR

  9. Relative Status Determination for Spacecraft Relative Motion Based on Dual Quaternion

    Directory of Open Access Journals (Sweden)

    Jun Sun

    2014-01-01

    Full Text Available For the two-satellite formation, the relative motion and attitude determination algorithm is a key component that affects the flight quality and mission efficiency. The relative status determination algorithm is proposed based on the Extended Kalman Filter (EKF and the system state optimal estimate linearization. Aiming at the relative motion of the spacecraft formation navigation problem, the spacecraft relative kinematics and dynamics model are derived from the dual quaternion in the algorithm. Then taking advantage of EKF technique, combining with the dual quaternion integrated dynamic models, considering the navigation algorithm using the fusion measurement by the gyroscope and star sensors, the relative status determination algorithm is designed. At last the simulation is done to verify the feasibility of the algorithm. The simulation results show that the EKF algorithm has faster convergence speed and higher accuracy.

  10. Improved GPS-based Satellite Relative Navigation Using Femtosecond Laser Relative Distance Measurements

    Directory of Open Access Journals (Sweden)

    Hyungjik Oh

    2016-03-01

    Full Text Available This study developed an approach for improving Carrier-phase Differential Global Positioning System (CDGPS based realtime satellite relative navigation by applying laser baseline measurement data. The robustness against the space operational environment was considered, and a Synthetic Wavelength Interferometer (SWI algorithm based on a femtosecond laser measurement model was developed. The phase differences between two laser wavelengths were combined to measure precise distance. Generated laser data were used to improve estimation accuracy for the float ambiguity of CDGPS data. Relative navigation simulations in real-time were performed using the extended Kalman filter algorithm. The GPS and laser-combined relative navigation accuracy was compared with GPS-only relative navigation solutions to determine the impact of laser data on relative navigation. In numerical simulations, the success rate of integer ambiguity resolution increased when laser data was added to GPS data. The relative navigational errors also improved five-fold and two-fold, relative to the GPS-only error, for 250 m and 5 km initial relative distances, respectively. The methodology developed in this study is suitable for application to future satellite formation-flying missions.

  11. Public Relations and Marketing.

    Science.gov (United States)

    Savage, Daniel D.

    1987-01-01

    Urges community colleges to adopt pro-active public relations strategies. Examines the role of the public information officer in such areas as coordination of public relations and marketing activities, relations with media, and the development of a comprehensive public relations plan. (AYC)

  12. Functional Programming With Relations

    OpenAIRE

    Hutton, Graham

    1991-01-01

    While programming in a relational framework has much to offer over the functional style in terms of expressiveness, computing with relations is less efficient, and more semantically troublesome. In this paper we propose a novel blend of the functional and relational styles. We identify a class of "causal relations", which inherit some of the bi-directionality properties of relations, but retain the efficiency and semantic foundations of the functional style.

  13. Relatives and Relations in Paluai’

    DEFF Research Database (Denmark)

    Schokkin, Dineke; Otto, Ton

    2017-01-01

    This paper discusses the expression of kinship in Paluai (Baluan-Pam, ISO 639-3: blq), an Oceanic language spoken on Baluan Island, Manus Province, Papua New Guinea. Based on data gathered during extensive fieldwork, the authors first consider the formal characteristics of nominal possessive cons...... of birth order terms, which are a relatively rare phenomenon, and the partial replacement of the system by terms from the creole language Tok Pisin....

  14. Macular xanthophylls, lipoprotein-related genes, and age-related macular degeneration1234

    Science.gov (United States)

    Koo, Euna; Neuringer, Martha; SanGiovanni, John Paul

    2014-01-01

    Plant-based macular xanthophylls (MXs; lutein and zeaxanthin) and the lutein metabolite meso-zeaxanthin are the major constituents of macular pigment, a compound concentrated in retinal areas that are responsible for fine-feature visual sensation. There is an unmet need to examine the genetics of factors influencing regulatory mechanisms and metabolic fates of these 3 MXs because they are linked to processes implicated in the pathogenesis of age-related macular degeneration (AMD). In this work we provide an overview of evidence supporting a molecular basis for AMD-MX associations as they may relate to DNA sequence variation in AMD- and lipoprotein-related genes. We recognize a number of emerging research opportunities, barriers, knowledge gaps, and tools offering promise for meaningful investigation and inference in the field. Overviews on AMD- and high-density lipoprotein (HDL)–related genes encoding receptors, transporters, and enzymes affecting or affected by MXs are followed with information on localization of products from these genes to retinal cell types manifesting AMD-related pathophysiology. Evidence on the relation of each gene or gene product with retinal MX response to nutrient intake is discussed. This information is followed by a review of results from mechanistic studies testing gene-disease relations. We then present findings on relations of AMD with DNA sequence variants in MX-associated genes. Our conclusion is that AMD-associated DNA variants that influence the actions and metabolic fates of HDL system constituents should be examined further for concomitant influence on MX absorption, retinal tissue responses to MX intake, and the capacity to modify MX-associated factors and processes implicated in AMD pathogenesis. PMID:24829491

  15. El Partido Comunista en clave local: viejas estrategias en un nuevo escenario político. Río Cuarto, Córdoba (1945-1951

    Directory of Open Access Journals (Sweden)

    Rebeca Camaño Semprini

    2016-01-01

    Full Text Available Los estudios realizados sobre las relaciones entre peronismo y comunis- mo nada dicen sobre las características que éstas asumieron en el interior del país ni sobre las prácticas concretas a que dieron lugar. El presente artículo da cuenta de esto a partir de su abordaje en un espacio local, el de la ciudad de Río Cuarto. Se entiende que tanto las características que asumió la conformación inicial del peronismo allí, como la tradición en las estrategias frentistas y la influencia sobre los gremios locales con que contaba el comunismo, les otorgaron a dichas relaciones una dinámica propia que permitiría complementar y matizar las reconstrucciones que sobre ellas se han hecho desde los espacios historiográficos centrales.

  16. Histopathology of IgG4-Related Autoimmune Hepatitis and IgG4-Related Hepatopathy in IgG4-Related Disease.

    Science.gov (United States)

    Nakanuma, Yasuni; Ishizu, Yoji; Zen, Yoh; Harada, Kenichi; Umemura, Takeji

    2016-08-01

    Immunoglobulin G4-related disease (IgG4-RD) is a systemic disease involving many organs; it includes IgG4-related sclerosing cholangitis and inflammatory pseudotumor in the hepatobiliary system. Two types of hepatic parenchymal involvement have been reported in IgG4-RD: IgG4-related autoimmune hepatitis (AIH) and IgG4-hepatopathy. Moreover, only three cases of IgG4-related AIH have been reported. Immunoglobulin G4-related AIH is clinicopathologically similar to AIH, except for an elevated serum IgG4 level and heavy infiltration of IgG4-positive plasma cells in the liver tissue. Interestingly, IgG4-related AIH can be complicated by well-known IgG4-RD(s). Immunoglobulin G4-hepatopathy, which includes various histopathological lesions encountered in the liver of patients with type I autoimmune pancreatitis, is classified into five histological categories: portal inflammation, large bile duct damage, portal sclerosis, lobular hepatitis, and cholestasis. Immunoglobulin G4-hepatopathy is currently a collective term covering hepatic lesions primarily or secondarily related to IgG4-related sclerosing cholangitis and type 1 autoimmune pancreatitis. In conclusion, the liver is not immune to IgG4-RD, and at least two types of hepatic involvement in IgG4-RD have been reported: IgG4-related AIH and IgG4-hepatopathy. Additional studies are required to clarify their precise clinical significance with respect to IgG4-RD and inherent liver diseases. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

  17. Relative Thinking Theory

    OpenAIRE

    Ofer H. Azar

    2005-01-01

    The article presents a theory that I denote “Relative Thinking Theory,” which claims that people consider relative differences and not only absolute differences when making various economics decisions, even in those cases where the rational model dictates that people should consider only absolute differences. The article reviews experimental evidence for this behavior, summarizing briefly several experiments I conducted, as well as some earlier related literature. It then discusses how we can...

  18. Usage of emergency contraception between medical related and non-medical related students.

    LENUS (Irish Health Repository)

    Khalid, A K

    2009-04-01

    Teenagers and young adultshave the most risk of unplanned pregnancy, due to lack of awareness to see a family planning provider after unprotected sexual intercourse. In addition, nearly one in five physicians is reluctant to provide information regarding Emergency Contraception (EC) to women and this may contribute to their lack of awareness. This study was conducted to assess the knowledge, attitudes and practices regarding the use of EC between medical related students compared to non-medical related students. Data collection was done using questionnaires distributed among students in University College Cork (UCC). 93% of medically related students were aware of EC compared to only 73.5% of non-medically related students. Medical related students also were more aware about the mechanism of action and detailed knowledge of EC compared to the non-medical students. This study has proven that medically related students have more detailed knowledge regarding EC compared to non-medical related students. However, there was no significant difference noted regarding the attitude and practice between the two groups.

  19. Productivity loss at work; Health-related and work-related factors

    NARCIS (Netherlands)

    Heuvel, S.G. van den; Geuskens, G.A.; Hooftman, W.E.; Koppes, L.L.J.; Bossche, S.N.J. van den

    2010-01-01

    Introduction Productivity loss is an increasing problem in an aging working population that is decreasing in numbers. The aim of this study is to identify work-related and health-related characteristics associated with productivity loss, due to either sickness absence or reduced performance at work.

  20. Public relations and ethics

    Directory of Open Access Journals (Sweden)

    Bajić Milan

    2010-01-01

    Full Text Available The aim of this paper is the analysis of different forms of PR implementation and research its relation with ethics in practice. 'Public relations' is the every-day term that represents the job that is widely used in all aspects of life and work in today's society. Public relations represent a specific form of communication that has a particular application in society. Public relations involve focusing on a public aspect of organization with the aim of building a positive attitude and image. Image of public relations as a profession is often unfairly negative, and the reason for this is unprofessional and unethical relation of individuals towards their profession. In practice ethics in public relations is often considered to be an oxymoron. Ethical thinking of experts in public relations goes from Biblical attitude 'all you want people to do to you, do even so to them' (Matthew 7:12to professional loyalty to organization they work for. Because of unethical appearance it is important to set the rules, in the form of codex by which the public relations professionals will set their behaviors. .

  1. How public relations works: theoretical roots and public relations perspectives

    NARCIS (Netherlands)

    Ihlen, Ø.; van Ruler, B.

    2007-01-01

    Public relations is often studied from a managerial, instrumental perspective or a psychological, behavioral perspective. To understand the role of public relations in building trust or mistrust and to develop - or destroy - a license to operate, it needs also to be studied as a social phenomenon.

  2. Comentarios sobre la Ley de Ordenamiento Territorial Sostenible

    Directory of Open Access Journals (Sweden)

    Arturo J. Yglesias

    2014-04-01

    Full Text Available La denominada Ley de Ordenamiento Territorial Sostenible, no fue bien recibida en el medio jurídico. Tanto los profesores de las diferentes materias de Derecho de nuestra Facultad como las asociaciones profesionales y otros grupos e juristas de nuestro medio, formularon reservas de diverso calibre sobre el texto de la ley que van desde sus aspectos adjetivos como la terminología y redacción hasta cuestiones sustanciales como lo que ella dice sobre el régimen de la propiedad territorial y otras cuestiones vinculadas.Desde el discurso político vimos lanzar opiniones iracundas y alarmistas sobre las modificaciones que la ley estaría haciendo al régimen de la propiedad privada, sobre su supuesta inconstitucionalidad.Nosotros nos vamos a referir a la ley a sus antecedentes y de las críticas que se le hacían, en la parte que toca a nuestra materia, esto es en lo relativo al régimen de la propiedad y debemos decir, a vía de adelanto, que no vemos en ella nada que afecte el derecho de propiedad consagrado por la Constitución de la República, ni los principios generales que regulan la propiedad territorial conforme al Código Civil, conforme a la vieja ley de Centros Poblados, sus modificativas ni demás normas sobre la materia.

  3. De la vigilancia convencional al monitoreo participativo

    Directory of Open Access Journals (Sweden)

    Jaime Breilh

    Full Text Available La necesidad de transformar el monitoreo de la salud de un instrumento funcional al sistema dominante de poder en una herramienta del poder colectivo, y de negociación del desarrollo de la salud laboral y el bienestar, implica la urgente transformación de la vieja vigilancia epidemiológica en un monitoreo participativo. Debe superarse el sistema convencional de información en salud, que observa fundamentalmente los "factores de enfermedad" y sus efectos mórbidos aislados, invisibilizando los procesos de determinación integrales. Este trabajo analiza el proceso de derrota de los derechos sociales y laborales, lo cual sitúa el desafío planteado en un escenario de profundo retroceso social y asalto a los derechos conquistados por los/as trabajadores/as en años de lucha. Con el propósito de esclarecer dicho argumento, al autor comienza contrastando los modelos de vigilancia clásicos, algunas propuestas transicionales, hasta arribar al monitoreo participativo. La aplicación de la categoría "perfil epidemiológico" permite sistematizar los dominios y dimensiones del monitoreo y establecer los sujetos sociales de esa mirada crítica e intercultural del pueblo sobre su salud, mediante la construcción de una matriz de procesos críticos.

  4. La construcción de la subjetividad. El impacto de las políticas sociales

    Directory of Open Access Journals (Sweden)

    Nora Mabel Briuoli

    2009-12-01

    Full Text Available El objetivo de este trabajo es abordar el modo complejo en que la realidad social impacta en la construcción de la subjetividad. Los ejes de análisis son los siguientes: La Construcción De La Subjetividad. Las funciones simbólicas que permiten dicho proceso psíquico. Los Nuevos Sujetos y Territorios de la precariedad y la desafiliación. Los Lazos Sociales. Nuevos roles. Declive de las instituciones y de los dispositivos de la Ley. Viejas Problemáticas planteadas Como Nuevas en el contexto actual: Desocupación, robo, adicciones, problemáticas escolares, los hijos de desaparecidos. Lo complejo de la realidad a la que nos enfrentamos en la vida cotidiana. Necesidad de revisar nuestras miradas e intervenciones.___________________ABSTRACT:The research has the purpose of analyzing the influence of the Army institutions during the return to the argentinian democratic system in 1983. It tries to study the way in which the Army influenced in the speeches of the electoral campaign, the political decisions put in practice by the Alfonsin Administration in military order, the Argentinian Forces imbalances, the disposition (or not of subordinating to the civil power and their role during the mutinies between 1987 and 1989, ideas that will allow an adequate analysis of the abilities and fragilities of the government strategies in the military sphere.

  5. Confrontación bipartidista en Colombia. El diario Vanguardia Liberal como un actor político opositor frente al partido conservador, 1949

    Directory of Open Access Journals (Sweden)

    Álvaro Acevedo Tarazona

    2013-12-01

    Full Text Available El presente artículo se propone analizar la oposición política que el partido liberal santandereano ejerció en contra del gobierno conservador de Mariano Ospina Pérez desde las páginas del diario vanguardia liberal en el contexto de las elecciones de 1949. Esta oposición se caracterizó no solo por la fuerza con que se criticó las acciones del gobierno, sino por el uso de expresiones cargadas de odios de vieja data y en general de todos los aspectos que las diferencias ideológicas conllevan. No cabe duda de que en Santander Vanguardia Liberal lideró la oposición política al partido conservador y que con sus editoriales quiso influir en el devenir político de su región tanto como en el de la nación. El análisis ha sido organizado en tres partes. En la primera, se reconstruye la imagen que de su antagonista político creó el liberalismo santandereano; en la segunda, se analiza la imagen que de sí mismos crearon los liberales; mientras que en la última se examina la manera en que fue percibida la acción opositora por parte del diario bumangués.

  6. ORDENACIÓN Y GESTIÓN DE RECURSOS HÍDRICOS EN UN ÁMBITO SUBÁRIDO: EL ABASTECIMIENTO DE LOS MUNICIPIOS INTEGRADOS EN LA MANCOMUNIDAD DE LOS CANALES DEL TAIBILLA

    Directory of Open Access Journals (Sweden)

    Fernando Vera Rebollo

    1989-01-01

    Full Text Available El agua es, sin lugar a dudas, el motor impulso r del desarrollo socioeconómico de las tierras del sureste peninsular ibérico; pero su escasez ha im puesto tradicionalmente una utilización razonada del recurso, al tiempo que se aseguraba su uso fuera de los espacios próximos a los cauces naturales, para lo que se hacía necesaria la construcción de una gran red de distribuci ón. Con la creación de la Mancomunidad de los Canales del Taibilla cristaliza la vieja aspiración de garantizar el abastecimiento de núcleos urbanos y entidades estatales. Es así como se sientan las bases que impulsarían el desarrollo industrial, a partir del decenio de los cincuenta y, desde los años sesenta, el despegue de la actividad turística en el litoral. Los resultados conseguidos merced a este sistema de abastecimiento son evidentes, pero el actual ritmo de desarrollo urbano y demográf ico de las principales ciudades y la nueva etapa expansionista que vive la franja litoral han puesto de relieve las limitaciones del Organismo, condicionado por la disponibilidad de recursos, por lo que este trabajo trata de esclar ecer su situación actual y perspectivas de futuro.

  7. Clasificación trófica de insectos acuáticos en ocho quebradas protegidas de la ecorregión cafetera colombiana

    Directory of Open Access Journals (Sweden)

    Ana M. Chará-Serna

    2010-04-01

    Full Text Available Trophic classification of aquatic insects in eight sheltered streams of the Colombian coffee ecoregion. Objective. To determinethe trophic structure of the aquatic insect assembly associated to eight streams in the Colombian coffee-growing ecoregion. Materialsand methods. Aquatic insects were collected in eight forested streams located in La Vieja river basin. The taxa collected were assignedto dietary groups according to a regional classification based on the gut content analysis of aquatic insects associated to forested streamsof the Otún river basin. Results. 2019 individuals belonging to 73 taxa were collected and 60 were classified into dietary groups. Themost abundant group was collectors (55%, followed by shredders (31% and predators (10%. Scrapers represented only 0.05% of thesample and the remaining 3,95% could not be classified due to lack of information. Conclusions. The dominance of collectors andshredders reveals the importance of coarse particulate organic matter (leaf litter as a food resource for the insect fauna. Similaritiesbetween the trophic structure of this community and other communities studied in similar streams, suggest the possibility of a commonpattern for Andean streams. This study evidenced the lack of knowledge on trophic ecology of tropical aquatic insects; 50% of the taxacollected did not have this kind of information for the tropics and 20% had no information neither for the tropics nor temperate zones.

  8. Arqueología y rehabilitación en Sevilla. Desarrollo metodológico y práctico

    Directory of Open Access Journals (Sweden)

    Tabales Rodríguez, Miguel Ángel

    2002-12-01

    Full Text Available Since 1985 the city of Seville lived an extraordinary increasing in the rehabilitation of historical buildings because three main reasons: the celebration of the Universal Exposition at 1992 and the consequent recuperation of old institutions like Covent of Cartuja and San Clemente, the new attributions of the regional government that installed its dependencies on old palaces like Mañara or Altamira; and the impulse of the local urban authorities translated in the recuperation of islamic walls, monasteries. Some of the methodological contributions in Archaeology of Architecture in our country are a derivation of that experience.A partir del año 1985 la ciudad de Sevilla ha conocido un desarrollo extraordinario de la actividad de rehabilitación de edificios históricos debido a tres razones principales: la celebración en el año 1992 de la Exposición Universal y la consiguiente recuperación de viejas instituciones como el Convento de la Cartuja y San Clemente; las nuevas atribuciones de la administración autonómica, que se ha ocupado de palacios como los de Mañara o Altamira; el impulso prestado por el ayuntamiento para la recuperación de las murallas islámicas, monasterios, etc. Como resultado de estas experiencias se ha producido un desarrollo metodológico de la Arqueología de la Arquitectura.

  9. Predator avoidance in extremophile fish.

    Science.gov (United States)

    Bierbach, David; Schulte, Matthias; Herrmann, Nina; Zimmer, Claudia; Arias-Rodriguez, Lenin; Indy, Jeane Rimber; Riesch, Rüdiger; Plath, Martin

    2013-02-06

    Extreme habitats are often characterized by reduced predation pressures, thus representing refuges for the inhabiting species. The present study was designed to investigate predator avoidance of extremophile populations of Poecilia mexicana and P. sulphuraria that either live in hydrogen sulfide-rich (sulfidic) springs or cave habitats, both of which are known to have impoverished piscine predator regimes. Focal fishes that inhabited sulfidic springs showed slightly weaker avoidance reactions when presented with several naturally occurring predatory cichlids, but strongest differences to populations from non-sulfidic habitats were found in a decreased shoaling tendency with non-predatory swordtail (Xiphophorus hellerii) females. When comparing avoidance reactions between P. mexicana from a sulfidic cave (Cueva del Azufre) and the adjacent sulfidic surface creek (El Azufre), we found only slight differences in predator avoidance, but surface fish reacted much more strongly to the non-predatory cichlid Vieja bifasciata. Our third experiment was designed to disentangle learned from innate effects of predator recognition. We compared laboratory-reared (i.e., predator-naïve) and wild-caught (i.e., predator-experienced) individuals of P. mexicana from a non-sulfidic river and found no differences in their reaction towards the presented predators. Overall, our results indicate (1) that predator avoidance is still functional in extremophile Poecilia spp. and (2) that predator recognition and avoidance reactions have a strong genetic basis.

  10. Panamá en el siglo XVIII: Trazado urbano, materiales y técnica constructiva

    Directory of Open Access Journals (Sweden)

    Mena García, Carmen

    1997-08-01

    Full Text Available The author discusses the relocation of Panamá City to its current site, as well as the morphological characteristics that made it both a fortress and a market place. In its new location, the city continued to play to role of the sea port and commercial center that it played before by being a key stop in the silver route and house of trade of the Americas; but the new city was surrounded by the wall, and built according to a plan that is the perfect example of the classic colonial city in Spanish America.

    Se analiza aquí el traslado de la ciudad de Panamá la Vieja a su actual emplazamiento y las características morfológicas que la convierten en una ciudad "fortaleza y mercado" a la vez, dado que sigue desempeñando la misma función portuaria y comercial que antaño: la de centro neurálgico del comercio americano y puerto de tránsito y transbordo en la ruta de la plata, sólo que ahora su perímetro urbano es ceñido por un gran cinturón abaluartado y su trazado reproduce con gran perfección el modelo clásico de la ciudad americana colonial.

  11. Podemos y la política de la tecnología

    Directory of Open Access Journals (Sweden)

    Gemma Galdon Clavell

    2015-04-01

    Full Text Available El impacto de Podemos en la incorporación de diferentes herramientas tecnológicas al ‘hacer política’ es evidente. Aunque Podemos no fue el único o primer actor en probar muchas de las aplicaciones que hemos ido normalizando o adoptando en los últimos meses, el salto cuantitativo en los niveles de participación y tamaño de las comunidades de usuarias tiene una traducción también cualitativa: las nuevas tecnologías ya no son el guiño ‘moderno’ de estructuras viejas, sino que forman parte del andamio de las nuevas. Sin streaming no hubiera sido posible La Tuerka. Sin redes sociales no se habría creado una comunidad alrededor de las intervenciones televisivas de Pablo Iglesias. Sin Appgree o Agora Voting, la asamblea de Vistalegre no hubiera ido mucho más allá de los pocos miles de asistentes presenciales y la caprichosa cobertura mediática tradicional. Para ‘romper el cerrojo’ de las comunidades y los consensos tradicionales, para la creación del espacio Podemos y la verificación de su hipótesis inicial, estas tecnologías han sido clave. Una vez roto el techo de cristal, no obstante, empiezan a perfilarse los retos de la segunda pantalla.

  12. Searching for new ideas: a mediation of creativity from a cognitive perspective

    Directory of Open Access Journals (Sweden)

    Julia Margarita Barco Rodríguez

    2014-12-01

    Full Text Available Este artículo deriva del proyecto de investigación “Explorando viejas ideas en busca de las nuevas: la experiencia educativa como mediación para el desarrollo de la creatividad”, adelantado por sus autores en la Maestría en Educación de la Pontificia Universidad Javeriana, Línea de Cognición y Creatividad. Reflexiona sobre la creatividad como una capacidad propia del ser humano, susceptible de ser desarrollada en ambientes de aprendizaje que la propicien, desde el enfoque de la cognición creativa, que desmitifica las creencias que explican la creatividad como un asunto de genialidad o inspiración, con lo cual la sitúa en el centro de la reflexión educativa. La mediación de la experiencia educativa para el desarrollo de la creatividad se asume desde la perspectiva del modelo Geneplore que la concibe, no como un proceso único e independiente sino como el resultado de diversos procesos mentales, generativos y exploratorios, los cuales ayudan a sentar las bases del insight creativo y el descubrimiento. Desde estas comprensiones se hace una invitación a pensar alternativas mediadoras que permitan salvar la enorme distancia entre la creatividad como aspiración y propósito de las políticas y proyectos educativos, y la realidad de su desarrollo en el contexto escolar.

  13. Predator Avoidance in Extremophile Fish

    Science.gov (United States)

    Bierbach, David; Schulte, Matthias; Herrmann, Nina; Zimmer, Claudia; Arias-Rodriguez, Lenin; Indy, Jeane Rimber; Riesch, Rüdiger; Plath, Martin

    2013-01-01

    Extreme habitats are often characterized by reduced predation pressures, thus representing refuges for the inhabiting species. The present study was designed to investigate predator avoidance of extremophile populations of Poecilia mexicana and P. sulphuraria that either live in hydrogen sulfide-rich (sulfidic) springs or cave habitats, both of which are known to have impoverished piscine predator regimes. Focal fishes that inhabited sulfidic springs showed slightly weaker avoidance reactions when presented with several naturally occurring predatory cichlids, but strongest differences to populations from non-sulfidic habitats were found in a decreased shoaling tendency with non-predatory swordtail (Xiphophorus hellerii) females. When comparing avoidance reactions between P. mexicana from a sulfidic cave (Cueva del Azufre) and the adjacent sulfidic surface creek (El Azufre), we found only slight differences in predator avoidance, but surface fish reacted much more strongly to the non-predatory cichlid Vieja bifasciata. Our third experiment was designed to disentangle learned from innate effects of predator recognition. We compared laboratory-reared (i.e., predator-naïve) and wild-caught (i.e., predator-experienced) individuals of P. mexicana from a non-sulfidic river and found no differences in their reaction towards the presented predators. Overall, our results indicate (1) that predator avoidance is still functional in extremophile Poecilia spp. and (2) that predator recognition and avoidance reactions have a strong genetic basis. PMID:25371337

  14. Models as Relational Categories

    Science.gov (United States)

    Kokkonen, Tommi

    2017-11-01

    Model-based learning (MBL) has an established position within science education. It has been found to enhance conceptual understanding and provide a way for engaging students in authentic scientific activity. Despite ample research, few studies have examined the cognitive processes regarding learning scientific concepts within MBL. On the other hand, recent research within cognitive science has examined the learning of so-called relational categories. Relational categories are categories whose membership is determined on the basis of the common relational structure. In this theoretical paper, I argue that viewing models as relational categories provides a well-motivated cognitive basis for MBL. I discuss the different roles of models and modeling within MBL (using ready-made models, constructive modeling, and generative modeling) and discern the related cognitive aspects brought forward by the reinterpretation of models as relational categories. I will argue that relational knowledge is vital in learning novel models and in the transfer of learning. Moreover, relational knowledge underlies the coherent, hierarchical knowledge of experts. Lastly, I will examine how the format of external representations may affect the learning of models and the relevant relations. The nature of the learning mechanisms underlying students' mental representations of models is an interesting open question to be examined. Furthermore, the ways in which the expert-like knowledge develops and how to best support it is in need of more research. The discussion and conceptualization of models as relational categories allows discerning students' mental representations of models in terms of evolving relational structures in greater detail than previously done.

  15. Relation Between Sustainability‑Related Communication and Competitiveness in the Chemical Industry

    Directory of Open Access Journals (Sweden)

    Jaroslava Hyršlová

    2017-01-01

    Full Text Available Interests of companies in the sustainability‑related communication have risen considerably in recent years. This paper focuses on the current state of sustainability‑related reporting in chemical industry companies registered in the Association of Chemical Industry in the Czech Republic. It deals with the form and the content of reporting, the importance of different stakeholders in this process as well as benefits of the sustainability‑related communication and its impacts on competitiveness of the company. This paper summarizes the results of a research executed in the year 2014. The results of the research showed that chemical industry companies were aware of the significance of sustainability‑related communication and they utilized various types of sustainability‑related reports for this communication. Companies prefer to report on the environmental and social aspects of their activities primarily in their annual reports, or they issue separate environmental reports. The research verified the relationship between the sustainability‑related communication and competitiveness. A suitable established high quality system of communication that provides sufficient information and meets the information requirements of the key stakeholders may significantly contribute to reputation improvement, to increased attractiveness of the company as an employer and thereby to maintain, to improve respectively, the level of a company’s competitiveness.

  16. Pioneers as Relational Subjects? Probing Relationality as ...

    African Journals Online (AJOL)

    relational engagement roles in driving the energy transition, as described on their website. ... He comments, 'In Japan, they call it Viking leadership,' .... island, such as the mayor, representatives of different business, leading employees at the.

  17. RELATIONS WITH THE PUBLIC VERSUS PUBLIC RELATIONS IN LOCAL PUBLIC ADMINISTRATION

    Directory of Open Access Journals (Sweden)

    Bente Florina Maria

    2010-12-01

    Full Text Available Concomitant with the evolution of society, public relations are socially expressed only together with the explicit articulation of public categories and public organizations, once the individual becomes a citizen whose satisfaction is at the core of the public systems preoccupations, ignoring times long gone when the ordinary citizen and the majority of the public administration representatives couldnt tell apart the concept of public relations from that of relations with the public.

  18. Event-related potential correlates of emergent inference in human arbitrary relational learning.

    Science.gov (United States)

    Wang, Ting; Dymond, Simon

    2013-01-01

    Two experiments investigated the functional-anatomical correlates of cognition supporting untrained, emergent relational inference in a stimulus equivalence task. In Experiment 1, after learning a series of conditional relations involving words and pseudowords, participants performed a relatedness task during which EEG was recorded. Behavioural performance was faster and more accurate on untrained, indirectly related symmetry (i.e., learn AB and infer BA) and equivalence trials (i.e., learn AB and AC and infer CB) than on unrelated trials, regardless of whether or not a formal test for stimulus equivalence relations had been conducted. Consistent with previous results, event related potentials (ERPs) evoked by trained and emergent trials at parietal and occipital sites differed only for those participants who had not received a prior equivalence test. Experiment 2 further replicated and extended these behavioural and ERP findings using arbitrary symbols as stimuli and demonstrated time and frequency differences for trained and untrained relatedness trials. Overall, the findings demonstrate convincingly the ERP correlates of intra-experimentally established stimulus equivalence relations consisting entirely of arbitrary symbols and offer support for a contemporary cognitive-behavioural model of symbolic categorisation and relational inference. Copyright © 2012 Elsevier B.V. All rights reserved.

  19. Relational Leading

    DEFF Research Database (Denmark)

    Larsen, Mette Vinther; Rasmussen, Jørgen Gulddahl

    2015-01-01

    This first chapter presents the exploratory and curious approach to leading as relational processes – an approach that pervades the entire book. We explore leading from a perspective that emphasises the unpredictable challenges and triviality of everyday life, which we consider an interesting......, relevant and realistic way to examine leading. The chapter brings up a number of concepts and contexts as formulated by researchers within the field, and in this way seeks to construct a first understanding of relational leading....

  20. A Review of the Literature Related to Government Relations in Higher Education

    Science.gov (United States)

    Brumfield, Randall; Miller, Michael T.

    2008-01-01

    This review of literature identifies the primary writings and research related to how higher education institutions operate government relations offices. These offices are defined by their mission and role of interfacing between institutional needs and officers and public officials. The review first reports the literature related to public…

  1. Differential age-related effects on conjunctive and relational visual short-term memory binding.

    Science.gov (United States)

    Bastin, Christine

    2017-12-28

    An age-related associative deficit has been described in visual short-term binding memory tasks. However, separate studies have suggested that ageing disrupts relational binding (to associate distinct items or item and context) more than conjunctive binding (to integrate features within an object). The current study directly compared relational and conjunctive binding with a short-term memory task for object-colour associations in 30 young and 30 older adults. Participants studied a number of object-colour associations corresponding to their individual object span level in a relational task in which objects were associated to colour patches and a conjunctive task where colour was integrated into the object. Memory for individual items and for associations was tested with a recognition memory test. Evidence for an age-related associative deficit was observed in the relational binding task, but not in the conjunctive binding task. This differential impact of ageing on relational and conjunctive short-term binding is discussed by reference to two underlying age-related cognitive difficulties: diminished hippocampally dependent binding and attentional resources.

  2. Special Relativity in Week One: 1) The Principle of Relativity

    Science.gov (United States)

    Huggins, Elisha

    2011-01-01

    We like to begin an introductory physics course with a law of physics that applies to everything, has no known exceptions, and whose consequences are already familiar to students. That law is the principle of relativity. By focusing on the principle of relativity itself, and a careful selection of the thought experiments, we can comfortably…

  3. Association between Experiencing Relational Bullying and Adolescent Health-Related Quality of Life

    Science.gov (United States)

    Chester, Kayleigh L.; Spencer, Neil H.; Whiting, Lisa; Brooks, Fiona M.

    2017-01-01

    Background: Bullying is a public health concern for the school-aged population, however, the health outcomes associated with the subtype of relational bullying are less understood. The purpose of this study was to examine the association between relational bullying and health-related quality of life (HRQL) among young people. Methods: This study…

  4. Tests Related to Pregnancy

    Science.gov (United States)

    ... to learn. Search form Search Tests related to pregnancy You are here Home Testing & Services Testing for ... to Genetic Counseling . What Are Tests Related to Pregnancy? Pregnancy related testing is done before or during ...

  5. Gravitation and relativity

    CERN Document Server

    Hoffmann, William F

    1964-01-01

    Remarks on the observational basis of general relativity ; Riemannian geometry ; gravitation as geometry ; gravitational waves ; Mach's principle and experiments on mass anisotropy ; the many faces of Mach ; the significance for the solar system of time-varying gravitation ; relativity principles and the role of coordinates in physics ; the superdense star and the critical nucleon number ; gravitation and light ; possible effects on the solar system of φ waves if they exist ; the Lyttleton-Bondi universe and charge equality ; quantization of general relativity ; Mach's principle as boundary condition for Einstein's equations.

  6. Heat-Related Illnesses

    Science.gov (United States)

    ... Share this! EmergencyCareForYou » Emergency 101 » Heat-Related Illnesses Heat-Related Illnesses Dr. Glenn Mitchell , Emergency physician at ... about heat cramps and heat stroke and exhaustion. Heat Cramps Symptoms include muscle spasms, usually in the ...

  7. Different workplace-related strains and different workplace-related anxieties in different professions.

    Science.gov (United States)

    Muschalla, Beate; Linden, Michael

    2013-08-01

    Similar to the spectrum of the traditional anxiety disorders, there are also different types of workplace-related anxieties. The question is whether in different professional settings different facets of workplace-related anxieties are predominant. A convenience sample of 224 inpatients (71% women) from a department of psychosomatic medicine was investigated. They were assessed with a structured diagnostic interview concerning anxiety disorders and specific workplace-related anxieties. Office workers suffer relatively most often from specific social anxiety, insufficiency, and workplace phobia. Service workers suffer predominantly from unspecific social anxiety. Health care workers are characterized by insufficiency, adjustment disorders, posttraumatic stress disorder, and workplace phobia. Persons in production and education are least often affected by workplace-related anxieties. Different types of anxiety are seen in different professional domains, parallel to workplace characteristics.

  8. Relation of Gothic arch apex to dentist-assisted centric relation.

    Science.gov (United States)

    Myers, M; Dziejma, R; Goldberg, J; Ross, R; Sharry, J

    1980-07-01

    These data suggest that the widely held belief that thumb pressure can position the mandible consistently more posterior than the position indicated by the Gothic arch apex is unfounded. Furthermore, this study provides no evidence to support the contention that the dentist-assisted jaw relation is more reproducible than the relation indicated by the Gothic arch apex.

  9. MOTHER – CHILD RELATION AND FACTORS AFFECTING T H I S RELATION

    Directory of Open Access Journals (Sweden)

    Fatma TEZEL ŞAHİ N

    2014-09-01

    Full Text Available The social institution where a child first meet with his birth and sets his social relations is his family. The communication of parents and other members of family determines the place of child in the family. In the preschool period when the basis of futu re lives is formed, healthy relations made with child are of great importance. What kind of a person the child starting to perceive himself and his environment in this period will be is determined with the life in this period. Family and relations within f amily as a structure have an impact on the child. Relations within family and experiences will be determinants of the relations with others. In particular, the tie formed in the earlier years between mother and child will have an effect on the personality creation and social relations in the period of adolescence and adulthood. Successful relations of the child and unconditioned love and trust that will be built with his mother is known to be the basis of their future life. In order that a mother could get in a healthy relation with her child, it is necessary that she should have an attitude of self - confidence, respectful, sensible to his problems, collaborative, sharing the feelings and views her children and accepting them. Mothers having an insisting atti tude not to accept their views and excluding them and not looking for a logic in their views cannot build a healthy relation. Children growing up with a healthy mother – child relation will become independent individuals with a self - esteem. The basis of a healthy mother – child relation depends on an infancy period starting with the process of pregnancy and going on with physical contact and nutrition after birth. Mother’s feeding of her baby, her care and preparation for life creates love and feeling of tr ust at child. When the child becomes an adult, he will guide his life with these two basic feelings. Mother should be a person giving her love to him, supporting the child

  10. Relations with parents and identity statuses in the relational domain in emerging adults

    Directory of Open Access Journals (Sweden)

    Justyna Michałek

    2016-09-01

    Full Text Available Background Emerging adulthood is a core developmental period in which individuals can develop a meaningful identity in the relational domain (with a romantic partner. The aim of the study was to examine relationships between relations with parents and identity statuses in the relational domain in emerging adults. Participants and procedure Participants were 266 (47.30% males emerging adults (M = 22.50, SD = 1.73. They completed self-report measures of relations with parents and identity. Results More than half of the participants were in the moratorium status or were not involved in a romantic relationship (35% and 29%, respectively. Relations with parents were linked to identity statuses in the relational domain. Particularly, the perception of low autonomy given by the father was related to less mature identity statuses. Conclusions This study highlighted that transition from singleness to stable partnerships seems to be challenging. Therefore, it is important to examine correlates of identity statuses in this domain.

  11. Heat-Related Illnesses

    Medline Plus

    Full Text Available ... Share this! EmergencyCareForYou » Emergency 101 » Heat-Related Illnesses Heat-Related Illnesses Dr. Glenn Mitchell , Emergency physician at ... about heat cramps and heat stroke and exhaustion. Heat Cramps Symptoms include muscle spasms, usually in the ...

  12. Simple relation algebras

    CERN Document Server

    Givant, Steven

    2017-01-01

    This monograph details several different methods for constructing simple relation algebras, many of which are new with this book. By drawing these seemingly different methods together, all are shown to be aspects of one general approach, for which several applications are given. These tools for constructing and analyzing relation algebras are of particular interest to mathematicians working in logic, algebraic logic, or universal algebra, but will also appeal to philosophers and theoretical computer scientists working in fields that use mathematics. The book is written with a broad audience in mind and features a careful, pedagogical approach; an appendix contains the requisite background material in relation algebras. Over 400 exercises provide ample opportunities to engage with the material, making this a monograph equally appropriate for use in a special topics course or for independent study. Readers interested in pursuing an extended background study of relation algebras will find a comprehensive treatme...

  13. Transit labor relations guide

    Science.gov (United States)

    2001-09-01

    This report is designed as a guide for those involved in labor relations in the transit industry. It begins with a history of transit labor relations. The economic, political, and legal environment of transit relations is then discussed. A section fo...

  14. MOTHER – CHILD RELATION AND FACTORS AFFECTING THIS RELATION

    OpenAIRE

    TEZEL ŞAHİN, Fatma

    2014-01-01

    The social institution where a child first meet with his birth and sets his social relations is his family. The communication of parents and other members of family determines the place of child in the family. In the preschool period when the basis of future lives is formed, healthy relations made with child are of great importance. What kind of a person the child starting to perceive himself and his environment in this period will be is determined with the life in this period. Family and rel...

  15. MOTHER – CHILD RELATION AND FACTORS AFFECTING THIS RELATION

    OpenAIRE

    TEZEL ŞAHİN, Fatma

    2015-01-01

    The social institution where a child first meet with his birth and sets his social relations is his family. The communication of parents and other members of family determines the place of child in the family. In the preschool period when the basis of future lives is formed, healthy relations made with child are of great importance. What kind of a person the child starting to perceive himself and his environment in this period will be is determined with the life in this period. Family and rel...

  16. The Principle of Relativity and the Indeterminacy of Special Relativity

    Science.gov (United States)

    de Abreu, Rodrigo; Guerra, Vasco

    2008-01-01

    This work ends a trilogy devoted to a journey into the foundations of special relativity. The first paper debated the meaning of the constancy of the two-way speed of light and its close relation to the conceptualization of time. The second one addressed the question of the possible constancy of the one-way speed of light and the trivial--but,…

  17. Algorithmic Relative Complexity

    Directory of Open Access Journals (Sweden)

    Daniele Cerra

    2011-04-01

    Full Text Available Information content and compression are tightly related concepts that can be addressed through both classical and algorithmic information theories, on the basis of Shannon entropy and Kolmogorov complexity, respectively. The definition of several entities in Kolmogorov’s framework relies upon ideas from classical information theory, and these two approaches share many common traits. In this work, we expand the relations between these two frameworks by introducing algorithmic cross-complexity and relative complexity, counterparts of the cross-entropy and relative entropy (or Kullback-Leibler divergence found in Shannon’s framework. We define the cross-complexity of an object x with respect to another object y as the amount of computational resources needed to specify x in terms of y, and the complexity of x related to y as the compression power which is lost when adopting such a description for x, compared to the shortest representation of x. Properties of analogous quantities in classical information theory hold for these new concepts. As these notions are incomputable, a suitable approximation based upon data compression is derived to enable the application to real data, yielding a divergence measure applicable to any pair of strings. Example applications are outlined, involving authorship attribution and satellite image classification, as well as a comparison to similar established techniques.

  18. Elements of relativity theory

    International Nuclear Information System (INIS)

    Lawden, D.F.

    1985-01-01

    The book on elements of relativity theory is intended for final year school students or as an early university course in mathematical physics. Special principle of relativity, lorentz transformation, velocity transformations, relativistic mechanics, and general theory of relativity, are all discussed. (U.K.)

  19. Relativity theory and gravitation

    International Nuclear Information System (INIS)

    Bondi, H.

    1986-01-01

    The paper on relativity theory and gravitation is presented as a preface to the first of the articles submitted to the Journal on general relativity. Newtonian gravitation and and observation, relativity, and the sources of the gravitational field, are all discussed. (UK)

  20. Relational aggression in marriage.

    Science.gov (United States)

    Carroll, Jason S; Nelson, David A; Yorgason, Jeremy B; Harper, James M; Ashton, Ruth Hagmann; Jensen, Alexander C

    2010-01-01

    Drawing from developmental theories of relational aggression, this article reports on a study designed to identify if spouses use relationally aggressive tactics when dealing with conflict in their marriage and the association of these behaviors with marital outcomes. Using a sample of 336 married couples (672 spouses), results revealed that the majority of couples reported that relationally aggressive behaviors, such as social sabotage and love withdrawal, were a part of their marital dynamics, at least to some degree. Gender comparisons of partner reports of their spouse's behavior revealed that wives were significantly more likely to be relationally aggressive than husbands. Structural equation modeling demonstrated that relational aggression is associated with lower levels of marital quality and greater marital instability for both husbands and wives. Implications are drawn for the use of relational aggression theory in the future study of couple conflict and marital aggression. (c) 2010 Wiley-Liss, Inc.

  1. Factors associated with drug-related harms related to policing in Tijuana, Mexico

    Science.gov (United States)

    2011-01-01

    Objective To assess factors associated with drug-related harms related to policing among injection drug users (IDUs) in Tijuana, Mexico. Methods IDUs who were over 18 years old and had injected drugs within the last six months were recruited via respondent-driven sampling and underwent questionnaires and testing for HIV (human immunodeficiency virus), syphilis and TB (tuberculosis). Random effects logistic regression was used to simultaneously model factors associated with five drug-related harms related to policing practices in the prior six months (i.e., police led them to rush injections; affected where they bought drugs; affected locations where they used drugs; feared that police will interfere with their drug use; receptive syringe sharing). Results Of 727 IDUs, 85% were male; median age was 38 years. Within the last 6 months, 231 (32%) of IDUs reported that police had led them to rush injections, affected where they bought or used drugs or were very afraid police would interfere with their drug use, or shared syringes. Factors independently associated with drug-related harms related to policing within the last six months included: recent arrest, homelessness, higher frequencies of drug injection, use of methamphetamine, using the local needle exchange program and perceiving a decrease in the purity of at least one drug. Conclusions IDUs who experienced drug-related harms related to policing were those who were most affected by other micro and macro influences in the physical risk environment. Police education programs are needed to ensure that policing practices do not exacerbate risky behaviors or discourage protective behaviors such as needle exchange program use, which undermines the right to health for people who inject drugs. PMID:21477299

  2. Factors associated with drug-related harms related to policing in Tijuana, Mexico

    Directory of Open Access Journals (Sweden)

    Patterson Thomas L

    2011-04-01

    Full Text Available Abstract Objective To assess factors associated with drug-related harms related to policing among injection drug users (IDUs in Tijuana, Mexico. Methods IDUs who were over 18 years old and had injected drugs within the last six months were recruited via respondent-driven sampling and underwent questionnaires and testing for HIV (human immunodeficiency virus, syphilis and TB (tuberculosis. Random effects logistic regression was used to simultaneously model factors associated with five drug-related harms related to policing practices in the prior six months (i.e., police led them to rush injections; affected where they bought drugs; affected locations where they used drugs; feared that police will interfere with their drug use; receptive syringe sharing. Results Of 727 IDUs, 85% were male; median age was 38 years. Within the last 6 months, 231 (32% of IDUs reported that police had led them to rush injections, affected where they bought or used drugs or were very afraid police would interfere with their drug use, or shared syringes. Factors independently associated with drug-related harms related to policing within the last six months included: recent arrest, homelessness, higher frequencies of drug injection, use of methamphetamine, using the local needle exchange program and perceiving a decrease in the purity of at least one drug. Conclusions IDUs who experienced drug-related harms related to policing were those who were most affected by other micro and macro influences in the physical risk environment. Police education programs are needed to ensure that policing practices do not exacerbate risky behaviors or discourage protective behaviors such as needle exchange program use, which undermines the right to health for people who inject drugs.

  3. Measuring Relational Reasoning

    Science.gov (United States)

    Alexander, Patricia A.; Dumas, Denis; Grossnickle, Emily M.; List, Alexandra; Firetto, Carla M.

    2016-01-01

    Relational reasoning is the foundational cognitive ability to discern meaningful patterns within an informational stream, but its reliable and valid measurement remains problematic. In this investigation, the measurement of relational reasoning unfolded in three stages. Stage 1 entailed the establishment of a research-based conceptualization of…

  4. Relative energy for the Korteweg theory and related Hamiltonian flows in gas dynamics

    KAUST Repository

    Giesselmann, Jan; Lattanzio, Corrado; Tzavaras, Athanasios

    2016-01-01

    For an Euler system, with dynamics generated by a potential energy functional, we propose a functional format for the relative energy and derive a relative energy identity. The latter, when applied to specific energies, yields relative energy

  5. Sport-related concussions

    Directory of Open Access Journals (Sweden)

    Jéssica Natuline Ianof

    Full Text Available ABSTRACT Traumatic brain injury (TBI is a major cause of lifelong disability and death worldwide. Sport-related traumatic brain injury is an important public health concern. The purpose of this review was to highlight the importance of sport-related concussions. Concussion refers to a transient alteration in consciousness induced by external biomechanical forces transmitted directly or indirectly to the brain. It is a common, although most likely underreported, condition. Contact sports such as American football, rugby, soccer, boxing, basketball and hockey are associated with a relatively high prevalence of concussion. Various factors may be associated with a greater risk of sport-related concussion, such as age, sex, sport played, level of sport played and equipment used. Physical complaints (headache, fatigue, dizziness, behavioral changes (depression, anxiety, irritability and cognitive impairment are very common after a concussion. The risk of premature return to activities includes the prolongation of post-concussive symptoms and increased risk of concussion recurrence.

  6. A Bigraph Relational Model

    DEFF Research Database (Denmark)

    Beauquier, Maxime; Schürmann, Carsten

    2011-01-01

    In this paper, we present a model based on relations for bigraphical reactive system [Milner09]. Its defining characteristics are that validity and reaction relations are captured as traces in a multi-set rewriting system. The relational model is derived from Milner's graphical definition...

  7. Two multi-dimensional uncertainty relations

    International Nuclear Information System (INIS)

    Skala, L; Kapsa, V

    2008-01-01

    Two multi-dimensional uncertainty relations, one related to the probability density and the other one related to the probability density current, are derived and discussed. Both relations are stronger than the usual uncertainty relations for the coordinates and momentum

  8. EU-Mashreq Relations

    DEFF Research Database (Denmark)

    Seeberg, Peter

    2018-01-01

    -related foreign policy considerations: the ENP Action Plans (APs) ‘will draw on a common set of principles but will be differentiated, reflecting the existing state of relations with each country, its needs and capacities, as well as common interests’ (Commission of the European Communities 2004). In the Mashreq...

  9. General relativity

    International Nuclear Information System (INIS)

    Gourgoulhon, Eric

    2013-01-01

    The author proposes a course on general relativity. He first presents a geometrical framework by addressing, presenting and discussion the following notions: the relativistic space-time, the metric tensor, Universe lines, observers, principle of equivalence and geodesics. In the next part, he addresses gravitational fields with spherical symmetry: presentation of the Schwarzschild metrics, radial light geodesics, gravitational spectral shift (Einstein effect), orbitals of material objects, photon trajectories. The next parts address the Einstein equation, black holes, gravitational waves, and cosmological solutions. Appendices propose a discussion of the relationship between relativity and GPS, some problems and their solutions, and Sage codes

  10. Weak relativity

    CERN Document Server

    Selleri, Franco

    2015-01-01

    Weak Relativity is an equivalent theory to Special Relativity according to Reichenbach’s definition, where the parameter epsilon equals to 0. It formulates a Neo-Lorentzian approach by replacing the Lorentz transformations with a new set named “Inertial Transformations”, thus explaining the Sagnac effect, the twin paradox and the trip from the future to the past in an easy and elegant way. The cosmic microwave background is suggested as a possible privileged reference system. Most importantly, being a theory based on experimental proofs, rather than mutual consensus, it offers a physical description of reality independent of the human observation.

  11. Decreasing Relative Risk Premium

    DEFF Research Database (Denmark)

    Hansen, Frank

    relative risk premium in the small implies decreasing relative risk premium in the large, and decreasing relative risk premium everywhere implies risk aversion. We finally show that preferences with decreasing relative risk premium may be equivalently expressed in terms of certain preferences on risky......We consider the risk premium demanded by a decision maker with wealth x in order to be indifferent between obtaining a new level of wealth y1 with certainty, or to participate in a lottery which either results in unchanged present wealth or a level of wealth y2 > y1. We define the relative risk...... premium as the quotient between the risk premium and the increase in wealth y1–x which the decision maker puts on the line by choosing the lottery in place of receiving y1 with certainty. We study preferences such that the relative risk premium is a decreasing function of present wealth, and we determine...

  12. STRATEGI KOMUNIKASI PUBLIC RELATIONS

    Directory of Open Access Journals (Sweden)

    Artis Artis

    2011-11-01

    Full Text Available Living man in interrelates society. Relationship among human being done by gets communication so man one by another one mutually understand and influence regard for the benefit, it that always been practiced by Public Relations( liaison in a governance and also firm institute to reach to the effect which ices. The institute of Public Relations declares for,”Public Relations is overall effort which be passed off by design and berkesenambungan in order to creates and pet keenness and mutual understanding among an organization with whole its member “. In this case, Public Relations in give distribution on manajement's strategy there is two: First, Doing task as part of Public Relations's strategy and involvement in comprehensive process and gives benefit for management an organization. Both of, Public Relations gets role in management strategy in bring off activity to reach to the effect good one gets internal character and also external one correspond to that desirable by good institute on level governance and firm.

  13. De Sitter projective relativity

    CERN Document Server

    Licata, Ignazio; Benedetto, Elmo

    2017-01-01

    This book presents the Projective approach to de Sitter Relativity. It traces the development of renewed interest in models of the universe at constant positive curvature such as "vacuum" geometry. The De Sitter Theory of Relativity, formulated in 1917 with Willem De Sitter's solution of the Einstein equations, was used in different fields during the 1950s and 1960s, in the work of H. Bacry, J.M. LevyLeblond and F.Gursey, to name some important contributors. From the 1960s to 1980s, L. Fantappié and G. Arcidiacono provided an elegant group approach to the De Sitter universe putting the basis for special and general projective relativity. Today such suggestions flow into a unitary scenario, and this way the De Sitter Relativity is no more a "missing opportunity" (F. Dyson, 1972), but has a central role in theoretical physics. In this volume a systematic presentation is given of the De Sitter Projective relativity, with the recent developments in projective general relativity and quantum cosmology.

  14. The relational universe

    International Nuclear Information System (INIS)

    Magnon, A.

    1998-01-01

    A relational approach to be observable universe is proposed, which precludes the concept of absolute background. Space-time events emerge as dynamical entities which owe their existence to a memorization process, itself inter wind with the availability of cosmological horizons (screening from totality) sourcing long-range correlations. The resulting (and relational) mode of description sheds light on various paradoxes (EPR, Foucault pendolum, light beam effect, etc.), on the problem of instantaneous and global influences (quark deconfinement) as related to the interconnectedness of our cosmos. This scenario leads to comment on living systems vs. robots, and on non-recursive and global aspects of the mathematical intuition

  15. Are hospitals also for relatives?

    DEFF Research Database (Denmark)

    Nissen, Nina Konstantin; Madsen, Mette; Kjøller, Mette

    2008-01-01

    at relatives of patients with cardiac diseases is sparse. This study aimed to survey the prevalence of health services for relatives of cardiac patients in Denmark. METHODS: We surveyed activities offered by Danish hospitals to the relatives of cardiac patients. Data were obtained from an Internet-based survey...... and 50 of 55 invited hospital departments participated. RESULTS: Almost all departments offer activities to relatives of cardiac patients, but only one-quarter have activities specifically aimed at supporting relatives. Large departments offer activities for relatives more often than smaller departments....... Participation rates for relatives are generally low, and the departments experience numerous barriers in providing activities for relatives of heart patients. CONCLUSIONS: Danish hospitals focus very little on relatives of cardiac patients, and this seems to be due to several factors, including lack...

  16. Relative Lyapunov Center Bifurcations

    DEFF Research Database (Denmark)

    Wulff, Claudia; Schilder, Frank

    2014-01-01

    Relative equilibria (REs) and relative periodic orbits (RPOs) are ubiquitous in symmetric Hamiltonian systems and occur, for example, in celestial mechanics, molecular dynamics, and rigid body motion. REs are equilibria, and RPOs are periodic orbits of the symmetry reduced system. Relative Lyapunov...... center bifurcations are bifurcations of RPOs from REs corresponding to Lyapunov center bifurcations of the symmetry reduced dynamics. In this paper we first prove a relative Lyapunov center theorem by combining recent results on the persistence of RPOs in Hamiltonian systems with a symmetric Lyapunov...... center theorem of Montaldi, Roberts, and Stewart. We then develop numerical methods for the detection of relative Lyapunov center bifurcations along branches of RPOs and for their computation. We apply our methods to Lagrangian REs of the N-body problem....

  17. Nonmaterialized Relations and the Support of Information Retrieval Applications by Relational Database Systems.

    Science.gov (United States)

    Lynch, Clifford A.

    1991-01-01

    Describes several aspects of the problem of supporting information retrieval system query requirements in the relational database management system (RDBMS) environment and proposes an extension to query processing called nonmaterialized relations. User interactions with information retrieval systems are discussed, and nonmaterialized relations are…

  18. Parental educational practices in relation to children's anxiety disorder-related behavior.

    Science.gov (United States)

    Mellon, Robert C; Moutavelis, Adrianos G

    2011-08-01

    Schoolchildren reported their parents' use of aversive control and positive reinforcement contingencies in their educational interventions, as well as parental non-responsiveness to their requests for educational assistance. They also reported their own levels of six dimensions of anxiety disorder-related phenomena. Both parental use of aversive control and non-responsiveness were directly related to overall levels of child anxiety disorder-related behavior; these correlations were more robust than those observed in previous investigations of more diffuse dimensions of parenting style and trait anxiety. Panic disorder/agoraphobia and Generalized anxiety disorder were the dimensions most strongly correlated with both parental aversive control and non-responsiveness, while Compulsive behavior was uniquely uncorrelated with parental non-responsiveness and uniquely correlated with parental use of positive reinforcement contingencies. Differences in the magnitudes of correlations between anxiety disorder-related dimensions and parental educational practices are interpreted in terms of the probable differential effectiveness of their constituent behaviors in terminating parent-mediated negative reinforcers. Copyright © 2011 Elsevier Ltd. All rights reserved.

  19. Destination: Alumni Relations

    Science.gov (United States)

    Scully, Maura King

    2010-01-01

    Increasingly today, with the growing and sophisticated skill set alumni professionals need to get the job done, alumni relations has become a destination career rather than a stop along the way. Modern alumni relations is "so much more than homecoming and punch-and-cookie receptions." It's marketing, volunteer management, and social networking. To…

  20. Modernization of credit relations

    Directory of Open Access Journals (Sweden)

    S.V. Volosovich

    2015-03-01

    Full Text Available Nowadays it is essential to modernize credit relations in the conditions of global economy transformations. This is due to the influence of integration processes on credit relations and transformation of the risks inherent in the credit field. The purpose of this article is to develop measures that help to improve the efficiency of interaction of credit relations’ participants. Modernization of credit relations is based on the interaction of its main and indirect subjects who belong to the subsystems of loans granting, deposits attraction and provision of related services. Its goal is to pass from extensive to intensive model of interaction between the subjects of credit relations. Components of the credit relations modernization are the following: institutional modernization, which is based on the interaction of credit relations’ subjects, and ensures the development of competition in all credit market’s segments, the creation of its corresponding infrastructure, qualitative change in the approaches of regulation and supervision; technological modernization, which involves the formation of joint products on the credit market and the formation of an integrated informational and analytical system. In the result of the credit relations’ modernization it is expected to achieve synergies between the subjects of credit relations, that will lead to changes in the business architecture of the financial market.

  1. Producing and Recognizing Analogical Relations

    Science.gov (United States)

    Lipkens, Regina; Hayes, Steven C

    2009-01-01

    Analogical reasoning is an important component of intelligent behavior, and a key test of any approach to human language and cognition. Only a limited amount of empirical work has been conducted from a behavior analytic point of view, most of that within Relational Frame Theory (RFT), which views analogy as a matter of deriving relations among relations. The present series of four studies expands previous work by exploring the applicability of this model of analogy to topography-based rather than merely selection-based responses and by extending the work into additional relations, including nonsymmetrical ones. In each of the four studies participants pretrained in contextual control over nonarbitrary stimulus relations of sameness and opposition, or of sameness, smaller than, and larger than, learned arbitrary stimulus relations in the presence of these relational cues and derived analogies involving directly trained relations and derived relations of mutual and combinatorial entailment, measured using a variety of productive and selection-based measures. In Experiment 1 participants successfully recognized analogies among stimulus networks containing same and opposite relations; in Experiment 2 analogy was successfully used to extend derived relations to pairs of novel stimuli; in Experiment 3 the procedure used in Experiment 1 was extended to nonsymmetrical comparative relations; in Experiment 4 the procedure used in Experiment 2 was extended to nonsymmetrical comparative relations. Although not every participant showed the effects predicted, overall the procedures occasioned relational responses consistent with an RFT account that have not yet been demonstrated in a behavior-analytic laboratory setting, including productive responding on the basis of analogies. PMID:19230515

  2. Relative Deprivation and Relative Wealth Enhances Anti-Immigrant Sentiments: The V-Curve Re-Examined.

    Directory of Open Access Journals (Sweden)

    Jolanda Jetten

    Full Text Available Previous research has shown that negative attitudes towards immigrants and support for anti-immigrant parties are observed both among those experiencing relative deprivation and those experiencing relative gratification (so called v-curve. Whereas the effect of relative deprivation is intuitive, the effect of relative gratification is more difficult to explain. Why would economic prosperity provoke negative attitudes towards immigrants? We first present correlational (Study 1 and experimental (Study 2 support for the v-curve. In Study 1, in a national Swiss referendum, a higher percentage anti-immigrant voting was found in cantons with relatively lower and relatively higher relative disposable income. In Study 2, in a hypothetical society, more opposition to 'newcomers' joining society was found among poor or above average wealth group members than among those in a moderate wealth group condition. In Study 3, we replicate this finding and also show that opposition to immigration is higher for all wealth groups when societal inequality is growing rather than declining. In a final study, we examine different forms of relative gratification and mediators of the relationship between relative gratification and opposition to immigration (i.e., identification, collective self-definition as competent and cold, and fear about future wealth. Only fear about future wealth mediates this relationship. We conclude that, paradoxically, relative gratification effects are partly due to the fear of future deprivation.

  3. Sleep-related movement disorders.

    Science.gov (United States)

    Merlino, Giovanni; Gigli, Gian Luigi

    2012-06-01

    Several movement disorders may occur during nocturnal rest disrupting sleep. A part of these complaints is characterized by relatively simple, non-purposeful and usually stereotyped movements. The last version of the International Classification of Sleep Disorders includes these clinical conditions (i.e. restless legs syndrome, periodic limb movement disorder, sleep-related leg cramps, sleep-related bruxism and sleep-related rhythmic movement disorder) under the category entitled sleep-related movement disorders. Moreover, apparently physiological movements (e.g. alternating leg muscle activation and excessive hypnic fragmentary myoclonus) can show a high frequency and severity impairing sleep quality. Clinical and, in specific cases, neurophysiological assessments are required to detect the presence of nocturnal movement complaints. Patients reporting poor sleep due to these abnormal movements should undergo non-pharmacological or pharmacological treatments.

  4. Quantum relativity theory

    International Nuclear Information System (INIS)

    Banai, M.

    1983-11-01

    A quantum relativity theory formulated in terms of Davis' quantum relativity principle is outlined. The first task in this theory as in classical relativity theory is to model space-time, the arena of natural processes. It is argued that the quantum space-time models of Banai introduced in an earlier paper is formulated in terms of Davis' quantum relativity. Then it is shown that the recently proposed classical relativistic quantum theory of Prugovecki and his corresponding classical relativistic quantum model of space-time open the way to introduce in a consistent way the quantum space-time model (the 'canonically quantized Minkowski space') proposed by Banai earlier. The main new aspect of the quantum mechanics of the quantum relativistic particles is, in this model of space-time, that it provides a true mass eigenvalue problem and, that the excited mass states of such particles can be interpreted as classifically relativistic (massive) quantum particles ('elementary particles'). The question of field theory over quantum relativistic models of space-time is also discussed. Finally, it is suggested that 'quarks' should be considered as quantum relativistic particles. (author)

  5. Beyond Relation: A Critical Exploration of "Relational Consciousness" for Spiritual Education

    Science.gov (United States)

    Wills, Ruth

    2012-01-01

    This paper takes a philosophical view of the spiritual concept "relational consciousness" first proposed by Rebecca Nye in 1998. I will consider the "relational" aspect of spirituality through the ontology of Heidegger and the dialogical relationship "I and Thou" of Martin Buber, examining the problems that contingency and mediation within…

  6. Think Piece: Pioneers as Relational Subjects? Probing Relationality ...

    African Journals Online (AJOL)

    therefore offers a possible framework for more detailed empirical studies on relationality in collective learning .... pioneers. This idea is also reflected in a book co-authored by Hermansen called Commonities ..... studies. Harvard MS: Harvard.

  7. Rayleigh reciprocity relations: Applications

    International Nuclear Information System (INIS)

    Lin Ju; Li Xiao-Lei; Wang Ning

    2016-01-01

    Classical reciprocity relations have wide applications in acoustics, from field representation to generalized optical theorem. In this paper we introduce our recent results on the applications and generalization of classical Rayleigh reciprocity relation: higher derivative reciprocity relations as a generalization of the classical one and a theoretical proof on the Green’s function retrieval from volume noises. (special topic)

  8. Annoying Danish Relatives

    DEFF Research Database (Denmark)

    Jensen de López, Kristine M.; Sundahl Olsen, Lone; Chondrigianni, V.

    2014-01-01

    This study examines the comprehension and production of subject and object relative clauses (SRCs, ORCs) by children with Specific Language Impairment (SLI) and their typically developing (TD) peers. The purpose is to investigate whether relative clauses are problematic for Danish children with S...... with the assignment of thematic roles rather than with the structural make-up of RCs....

  9. Correspondences. Equivalence relations

    International Nuclear Information System (INIS)

    Bouligand, G.M.

    1978-03-01

    We comment on sections paragraph 3 'Correspondences' and paragraph 6 'Equivalence Relations' in chapter II of 'Elements de mathematique' by N. Bourbaki in order to simplify their comprehension. Paragraph 3 exposes the ideas of a graph, correspondence and map or of function, and their composition laws. We draw attention to the following points: 1) Adopting the convention of writting from left to right, the composition law for two correspondences (A,F,B), (U,G,V) of graphs F, G is written in full generality (A,F,B)o(U,G,V) = (A,FoG,V). It is not therefore assumed that the co-domain B of the first correspondence is identical to the domain U of the second (EII.13 D.7), (1970). 2) The axiom of choice consists of creating the Hilbert terms from the only relations admitting a graph. 3) The statement of the existence theorem of a function h such that f = goh, where f and g are two given maps having the same domain (of definition), is completed if h is more precisely an injection. Paragraph 6 considers the generalisation of equality: First, by 'the equivalence relation associated with a map f of a set E identical to (x is a member of the set E and y is a member of the set E and x:f = y:f). Consequently, every relation R(x,y) which is equivalent to this is an equivalence relation in E (symmetrical, transitive, reflexive); then R admits a graph included in E x E, etc. Secondly, by means of the Hilbert term of a relation R submitted to the equivalence. In this last case, if R(x,y) is separately collectivizing in x and y, theta(x) is not the class of objects equivalent to x for R (EII.47.9), (1970). The interest of bringing together these two subjects, apart from this logical order, resides also in the fact that the theorem mentioned in 3) can be expressed by means of the equivalence relations associated with the functions f and g. The solutions of the examples proposed reveal their simplicity [fr

  10. Personality and Stressor-Related Affect

    Science.gov (United States)

    Leger, Kate A.; Charles, Susan T.; Turiano, Nicholas A.; Almeida, David M.

    2015-01-01

    Greater increases in negative affect and greater decreases in positive affect on days stressors occur portend poorer mental and physical health years later. Although personality traits influence stressor-related affect, only neuroticism and extraversion among the Big Five personality traits have been examined in any detail. Moreover, personality traits may shape how people appraise daily stressors, yet few studies have examined how stressor-related appraisals may account for associations between personality and stressor-related affect. Two studies used participants (N=2022, age 30–84) from the National Study of Daily Experiences II (NSDE II) to examine the associations between Big Five personality traits and stressor-related affect, in addition to how appraisals may account for these relationships. Results from Study 1 indicate that higher levels of extraversion, conscientiousness, and openness to experience, and lower levels of neuroticism, are related to less stressor-related negative affect. Only agreeableness was associated with stressor-related positive affect, such that higher levels were related to greater decreases in positive affect on days stressors occur. The second study found that stressor-related appraisals partially accounted for the significant associations between stressor-related negative affect and personality. Implications for these findings in relation to how personality may influence physical and emotional health are discussed. PMID:26796984

  11. THE EFFECT OF THE STATIC RELATIVE STRENGTH ON THE MAXIMUM RELATIVE RECEIVING OF OXYGEN

    Directory of Open Access Journals (Sweden)

    Abdulla Elezi

    2011-09-01

    Full Text Available Based on research on the sample of 263 students of age- 18 years, and used batteries of 9 tests for evaluation of the static relative strength and the criterion variable- maximum relative receiving of oxygen (VO2 ml / kg / min based on the Astrand test ,and on regression analysis to determine the influence of the static relative strength on the criterion variable maximum relative oxygen receiving, can be generally concluded that from 9 predictor variables statistically significant partial effect have 2variables. In hierarchical order, they are: the variable of static relative leg strength - endurance of the fingers (the angle of the lower leg and thigh 900 (SRL2 which arithmetic mean is 25.04 seconds and variable ctatic relative strength of arms and shoulders – push-up endurance in the balance beam (angle of the forearm and upper arm 900 ( SRA2 with arithmetic mean of 17.75 seconds. From the statistically influential significant predictor variables on the criterion variable one is from the static relative leg strength (SRL2 and the other is from the static relative strength of arm and shoulder area (SRA2. With the analysis of these relations we can conclude that the isometric contractions of the four headed thigh muscle and the isometric contractions of the three headed upper arm muscle are predominantly responsible for the successful execution of doing actions on a bicycle ergometer and not on the maximum relative receiving of oxygen.

  12. Ether formulations of relativity

    International Nuclear Information System (INIS)

    Duffy, M.C.

    1980-01-01

    Contemporary ether theories are surveyed and criticised, especially those formally identical to orthodox Relativity. The historical development of Relativity, Special and General, in terms of an ether, is briefly indicated. Classical interpretations of Generalized Relativity using ether are compared to Euclidean formulations using a background space. The history of a sub-group of theories, formulating a 'new' Relativity involving modified transforms, is outlined. According to the theory with which they agree, recent supposed detections of drift are classified and criticised. Cosmological evidence suggesting an ether is mentioned. Only ether theories formally identical to Relativity have been published in depth. They stand criticised as being contrary to the positivist spirit. The history of mechanical analogues is traced, from Hartley's representing gravitating matter as spherical standing waves, to recent suggestions that vortex-sponge might model electromagnetic, quantum, uncertainty and faster-than-light phenomena. Contemporary theories are particular physical theories, themselves 'second interpretations' of a primary mathematical model. Mechanical analogues are auxiliary, not necessary, to other theory, disclosing relationships between classical and non-classical descriptions of assemblies charging state. The ether-relativity polemic, part of a broader dispute about relativity, is founded on mistaken conceptions of the roles of mathematical and physical models, mechanical analogues; and a distored view of history, which indicates that ether theories have become relativistic. (author)

  13. Research On Websites Of 43 Publıc Relations Agency Members Of Public Relations Society Of Turkey (Tühid) In Aspect Of Public Relations

    OpenAIRE

    Aydınalp - Ilıcak, Ş. Güzin

    2012-01-01

    Nowadays public relations studies have entered a more effective process via recent media tools. In this study, the websites of 43 public relations agency members of Public Relations Society of Turkey (TÜHİD) are being evaluated in aspect of public relations. When considered from this point of view, the websites of the agencies in question have been analyzed in terms of company information, communication attempts, media relations, corporate identity, corporate publications and interaction. The...

  14. Epidemiology of terror-related versus non-terror-related traumatic injury in children.

    Science.gov (United States)

    Aharonson-Daniel, Limor; Waisman, Yehezkel; Dannon, Yehuda L; Peleg, Kobi

    2003-10-01

    In the past 2 years hundreds of children in Israel have been injured in terrorist attacks. There is a paucity of data on the epidemiology of terror-related trauma in the pediatric population and its effect on the health care system. The objective of this study was to review the accumulated Israeli experience with medical care to young victims of terrorism and to use the knowledge obtained to contribute to the preparedness of medical personnel for future events. Data on all patients who were younger than 18 years and were hospitalized from October 1, 2000, to December 31, 2001, for injuries sustained in a terrorist attack were obtained from the Israel National Trauma Registry. The parameters evaluated were patient age and sex, diagnosis, type, mechanism and severity of injury, interhospital transfer, stay in intensive care unit, duration of hospitalization, and need for rehabilitation. Findings were compared with the general pediatric population hospitalized for non-terror-related trauma within the same time period. During the study period, 138 children were hospitalized for a terror-related injury and 8363 for a non-terror-related injury. The study group was significantly older (mean age: 12.3 years [standard deviation: 5.1] v 6.9 years [standard deviation: 5.3]) and sustained proportionately more penetrating injuries (54% [n = 74] vs 9% [n = 725]). Differences were also noted in the proportion of internal injuries to the torso (11% in the patients with terror-related trauma vs 4% in those with non-terror-related injuries), open wounds to the head (13% vs 6%), and critical injuries (Injury Severity Score of 25+; 25% vs 3%). The study group showed greater use of intensive care unit facilities (33% vs 8% in the comparison group), longer median hospitalization time (5 days vs 2 days), and greater need for rehabilitative care (17% vs 1%). Terror-related injuries are more severe than non-terror-related injuries and increase the demand for acute care in children.

  15. Information in relational data bases

    Energy Technology Data Exchange (ETDEWEB)

    Abhyankar, R B

    1982-01-01

    A new knowledge representation scheme is proposed for representing incomplete information in relational data bases. The knowledge representation scheme introduces a novel convention for negative information based on modal logic and a novel data structure obtained by introducing tuple flags in the relational model of data. Standard and minimal forms are defined for relations conforming to the new data structure. The conventional relational operators, select, project and join, the redefined so they can be used to manipulate relations containing incomplete information. Conditions are presented for the lossless decomposition of relations containing incomplete information. 20 references.

  16. CoRE: A context-aware relation extraction method for relation completion

    KAUST Repository

    Li, Zhixu; Sharaf, Mohamed Abdel Fattah; Sitbon, Laurianne; Du, Xiaoyong; Zhou, Xiaofang

    2014-01-01

    We identify relation completion (RC) as one recurring problem that is central to the success of novel big data applications such as Entity Reconstruction and Data Enrichment. Given a semantic relation {\\cal R}, RC attempts at linking entity pairs between two entity lists under the relation {\\cal R}. To accomplish the RC goals, we propose to formulate search queries for each query entity \\alpha based on some auxiliary information, so that to detect its target entity \\beta from the set of retrieved documents. For instance, a pattern-based method (PaRE) uses extracted patterns as the auxiliary information in formulating search queries. However, high-quality patterns may decrease the probability of finding suitable target entities. As an alternative, we propose CoRE method that uses context terms learned surrounding the expression of a relation as the auxiliary information in formulating queries. The experimental results based on several real-world web data collections demonstrate that CoRE reaches a much higher accuracy than PaRE for the purpose of RC. © 1989-2012 IEEE.

  17. CoRE: A context-aware relation extraction method for relation completion

    KAUST Repository

    Li, Zhixu

    2014-04-01

    We identify relation completion (RC) as one recurring problem that is central to the success of novel big data applications such as Entity Reconstruction and Data Enrichment. Given a semantic relation {\\\\cal R}, RC attempts at linking entity pairs between two entity lists under the relation {\\\\cal R}. To accomplish the RC goals, we propose to formulate search queries for each query entity \\\\alpha based on some auxiliary information, so that to detect its target entity \\\\beta from the set of retrieved documents. For instance, a pattern-based method (PaRE) uses extracted patterns as the auxiliary information in formulating search queries. However, high-quality patterns may decrease the probability of finding suitable target entities. As an alternative, we propose CoRE method that uses context terms learned surrounding the expression of a relation as the auxiliary information in formulating queries. The experimental results based on several real-world web data collections demonstrate that CoRE reaches a much higher accuracy than PaRE for the purpose of RC. © 1989-2012 IEEE.

  18. Intensidad del síndrome climatérico y su relación con algunos factores socioambientales Climateric syndrome intensity and its relation to some socio-environmental factors

    Directory of Open Access Journals (Sweden)

    Margeris Yanes Calderón

    2009-12-01

    Full Text Available Introducción: expresiones como ….estoy menopáusica, estoy vieja, lo que pasa es que estoy en el climaterio o es el cambio de edad…. suelen no faltar en la consulta multidisciplinaria de climaterio y menopausia del Policlínico «Ana Betancourt», del municipio Playa. Ello motivó la realización de esta investigación, dejando atrás el enfoque biomédico con el que se ha manejado el período climatérico hasta nuestros días para avanzar hacia un enfoque médico social. Objetivo: determinar cómo influyen los factores socioambientales en la intensidad del síndrome climatérico. Métodos: se realizó un estudio descriptivo transversal de 192 mujeres climatéricas pertenecientes a 3 consultorios médicos del Policlínico Universitario «Ana Betancourt», en el municipio Playa de Ciudad de La Habana, en el período comprendido entre junio del año 2006 y mayo de 2007. Resultados: el síndrome climatérico leve prevaleció en el 42,18 % de las mujeres estudiadas, y aquellas con elevado grado de escolaridad tienen una incidencia mayor de síndrome climatérico asintomático o leve; se demostró una estrecha relación entre las mujeres con síndrome climatérico moderado y el funcionamiento familiar disfuncional; las mujeres trabajadoras tienen una tendencia a presentar un síndrome climatérico menos intenso y así lo refleja más del 33 % de ellas, y quedó demostrado que más del 30 % de las mujeres con buena satisfacción de sus necesidades básicas y un entorno higiénico habitacional bueno, tienen una mayor incidencia de síndrome climatérico asintomático o leve, lo cual guarda una estrecha relación con las características socioculturales y económicas del área de salud estudiada. Conclusiones: las mujeres con mayor grado de escolaridad, con estabilidad conyugal y vínculo laboral, que formen parte, además, de familias funcionales o moderadamente funcionales, y que tengan un entorno higiénico habitacional bueno en correspondencia

  19. Dynamics and Relativity

    CERN Document Server

    Forshaw, Jeffrey

    2009-01-01

    A new title in the Manchester Physics Series, this introductory text emphasises physical principles behind classical mechanics and relativity. It assumes little in the way of prior knowledge, introducing relevant mathematics and carefully developing it within a physics context. Designed to provide a logical development of the subject, the book is divided into four sections, introductory material on dynamics, and special relativity, which is then followed by more advanced coverage of dynamics and special relativity. Each chapter includes problems ranging in difficulty from simple to challenging with?solutions for solving problems. Includes?solutions for solving problemsNumerous worked examples included throughout the bookMathematics is carefully explained and developed within a physics environmentSensitive to topics that can appear daunting or confusing

  20. Relational topology

    CERN Document Server

    Schmidt, Gunther

    2018-01-01

    This book introduces and develops new algebraic methods to work with relations, often conceived as Boolean matrices, and applies them to topology. Although these objects mirror the matrices that appear throughout mathematics, numerics, statistics, engineering, and elsewhere, the methods used to work with them are much less well known. In addition to their purely topological applications, the volume also details how the techniques may be successfully applied to spatial reasoning and to logics of computer science. Topologists will find several familiar concepts presented in a concise and algebraically manipulable form which is far more condensed than usual, but visualized via represented relations and thus readily graspable. This approach also offers the possibility of handling topological problems using proof assistants.

  1. Gaining Relational Competitive Advantages

    DEFF Research Database (Denmark)

    Hu, Yimei; Zhang, Si; Li, Jizhen

    2015-01-01

    Establishing strategic technological partnerships (STPs) with foreign partners is an increasingly studied topic within the innovation management literature. Partnering firms can jointly create sources of relational competitive advantage. Chinese firms often lack research and development (R......&D) capabilities but are increasingly becoming preferred technological partners for transnational corporations. We investigate an STP between a Scandinavian and a Chinese firm and try to explore how to gain relational competitive advantage by focusing on its two essential stages: relational rent generation...... and appropriation. Based on an explorative case study, we develop a conceptual framework that consists of process, organizational alliance factors, and coordination modes that we propose lead to relational competitive advantage....

  2. The Historiography of Public Relations in Turkish Public Relations Books

    OpenAIRE

    KARAASLAN ŞANLI, Halise

    2017-01-01

    Criticism on the hegemonic history of public relations (PR) paved the way for the emergence of new approaches to the historiography of PR. The most significant of such approaches is the exposure of genuine history of PR for each country, taking into account the specific socioeconomic and cultural context of each country. This study focuses on the handling of the history of PR in Turkish books on public relations published by prominent publishing houses in Turkey between 1967 and 2013. The stu...

  3. Projective relativity, cosmology and gravitation

    International Nuclear Information System (INIS)

    Arcidiacono, G.

    1986-01-01

    This book describes the latest applications of projective geometry to cosmology and gravitation. The contents of the book are; the Poincare group and Special Relativity, the thermodynamics and electromagnetism, general relativity, gravitation and cosmology, group theory and models of universe, the special projective relativity, the Fantappie group and Big-Bang cosmology, a new cosmological projective mechanics, the plasma physics and cosmology, the projective magnetohydrodynamics field, projective relativity and waves propagation, the generalizations of the gravitational field, the general projective relativity, the projective gravitational field, the De Sitter Universe and quantum physics, the conformal relativity and Newton gravitation

  4. Numeric Input Relations for Relational Learning with Applications to Community Structure Analysis

    DEFF Research Database (Denmark)

    Jiang, Jiuchuan; Jaeger, Manfred

    2015-01-01

    distribution is defined by the model from numerical input variables that are only used for conditioning the distribution of discrete response variables. We show how numerical input relations can very easily be used in the Relational Bayesian Network framework, and that existing inference and learning methods......Most work in the area of statistical relational learning (SRL) is focussed on discrete data, even though a few approaches for hybrid SRL models have been proposed that combine numerical and discrete variables. In this paper we distinguish numerical random variables for which a probability...... use the augmented RBN framework to define probabilistic models for multi-relational (social) networks in which the probability of a link between two nodes depends on numeric latent feature vectors associated with the nodes. A generic learning procedure can be used to obtain a maximum-likelihood fit...

  5. Constructing a psychological coping profile in the call centre environment: Wellness-related dispositions in relation to resiliency-related behavioural capacities

    Directory of Open Access Journals (Sweden)

    Nisha Harry

    2015-08-01

    Full Text Available Orientation: The context of this research is the coping and wellness of call centre agents in a characteristically high-stress work environment. Research purpose: The purpose of the study was to construct a psychological coping profile by investigating the overall relationship between individuals’ wellness-related dispositional attributes and their resiliency-related behavioural capacities. Motivation of the study: It is important that coping in the call centre environment be understood in light of the complexity of the challenges that call centre agents experience in terms of their wellbeing. Research design, approach and method: A quantitative cross-sectional survey approach was followed, using a non-probability purposive sample (N = 409 comprising predominantly early career, permanently employed black females in call centres in Africa. Main findings: A canonical correlation analysis indicated a significant overall relationship between the wellness-related constructs (sense of coherence, emotional intelligence and burnout and the resiliency-related constructs (career adaptability and hardiness. Structural equation modelling indicated that managing own emotions and cynicism contributed significantly to explaining the participants’ resiliency-related behavioural capacities (hardicommitment and hardi-control. Practical/managerial implications: Enhancing call centre agents’ emotional intelligence and lowering cynicism will increase resiliency-related capacities, such as sense of control and commitment, and will significantly increase the resiliency and capacity of call centre agents to cope with pressure, which can lead to positive work attitudes. Contribution/value-add: The findings may provide valuable pointers for the design of wellness intervention practices and could potentially add to the body of knowledge concerned with employee wellness in call centres.

  6. Temps du care et organisation sociale du travail en famille Time for Care and the social organization of work in a family context

    Directory of Open Access Journals (Sweden)

    Aurélie Damamme

    2009-10-01

    Full Text Available L’organisation du care en famille interroge les manières de restituer les activités que ce travail recouvre, les multiples agents qu’il implique, et les temporalités diverses qu’il engage. Si le sexe et la  disponibilité temporelle quasi-permanente permettent de rapprocher le care du travail domestique, c’est le travail de coordination sur le long cours qui vient spécifier le care, tout à la fois travail et éthique. L’effort de mise en cohérence des protagonistes, professionnels et non professionnels, membres de la famille et quasi-parents, défie les frontières entre privé et public. Processus d’intégration de différentes temporalités, le care est décrit comme agencement et enchaînement de phases. C’est par le souci d’assurer la continuité des soins que s’identifie alors la figure du principal responsable, engagée dans une temporalité qui la met souvent en porte-à-faux avec celle des organisations du travail contemporain. Pourtant, c’est bien par la reconnaissance de l’importance politique de ce temps de care que peuvent être bousculées les hiérarchies variées auxquelles il peut donner lieu, selon les lignes de genre, de classe et de race.The organization of Care in families challenges the ways the work accomplished by a wide range of agents and their various temporalities are accounted for. If gender and a quasi-permanent temporal availability allow one to combine Care and household work, it is the task of coordination in the long term that specifies Care, both as labour and ethics. Creating coherence between protagonists - professionals and non professionals, family members and quasi-relatives - challenges the separation between private and public spheres. As a process integrating different temporalities, Care is described as both an organization in itself and a sequence of phases. Maintaining continuity and coherence is identified as the main role and concern of the principal caregiver

  7. LA MANCHA EN EL QUIJOTE: TERRITORIO Y LITERATURA PARA UNA GEOGRAFÍA DIDÁCTICA

    Directory of Open Access Journals (Sweden)

    Lorenzo Sánchez López

    2005-12-01

    Full Text Available RESUMEN:Todas las acciones humanas se realizan en el tiempo y en el espacio con técnicas materiales o inmateriales que territorializan. La acción humana es técnica, territorial y temporal, y siempre consecuencia de la intención y la capacidad de acción. Realizada en el "lugar" que la posibilita, su desarrollo escalar depende de su intensidad y de la situación relacional del centro de la acción. Así, las intenciones pueden ser locales y sin embargo globales, dado que pueden afectar a todos los lugares en razón directa a la intensidad y a la situación relacional de los territorios con aquel "lugar" donde se genera el acontecimiento y en razón inversa a la distancia.. En el caso que proponemos , el "lugar", es La Mancha, territorio local y temporal de la percepción. La intención es la Justicia. La acción es universal, intemporal y didáctica..PALABRAS-CLAVE:Territorio, literatura, intención, acción, local, global.ABSTRACT:Al1 human actions are carried out intime or space with material or imrnaterial techniques which they territorialize. Human action is technical, territorial and temporal and is always a consequence of the intention and capacity of the action. Carried out in the "place" which makes it posible, its development increases depending upon its intensity and the relational situation of the centre of the actionKEY WORDS: Territory, literature, intention, action, global, localRÉSUMÉ: Toutes les actions humaines se realisent dans le temps e dants l-espace avec des techniques matérielles e inmatérielles qui font le temtoire, L-actión humaine est, technique, temtoriale et temporelle e toujours, conséquence de 1' intention et de la capacité d'actión. Réalisée dans "lieu" qui la rend possible, son développement scalaire depend de son intensité et de la situation de relactión du centre de 1' actión.MOTS CLÉ: Territoire, literatura, intentión, actión, global, local.

  8. New general relativity

    International Nuclear Information System (INIS)

    Hayashi, K.; Shirafuji, T.

    1979-01-01

    A gravitational theory is formulated on the Weitzenboeck space-time, characterized by the vanishing curvature tensor (absolute parallelism) and by the torsion tensor formed of four parallel vector fields. This theory is called new general relativity, since Einstein in 1928 first gave its original form. New general relativity has three parameters c 1 , c 2 , and lambda, besides the Einstein constant kappa. In this paper we choose c 1 = 0 = c 2 , leaving open lambda. We prove, among other things, that (i) a static, spherically symmetric gravitational field is given by the Schwarzschild metric, that (ii) in the weak-field approximation an antisymmetric field of zero mass and zero spin exists, besides gravitons, and that (iii) new general relativity agrees with all the experiments so far carried out

  9. The isentropic relation in plasmas

    International Nuclear Information System (INIS)

    Burm, K T A L

    2004-01-01

    The isentropic relation from gas dynamics relates pressure, density and temperature. The use of this relation may ease the hydrodynamic modelling effort. Characteristic for the isentropic relation is the constant isentropic exponent. The isentropic exponent is also in the case of plasmas a constant as long as the ionization degree is between 5 and 80%. This constant is lower due to the extra degree of freedom which comes with ionization in plasmas. The occurrence of ionization means that plasmas are never isentropic. The isentropic relation itself is therefore adapted here to include plasmas within its concept. From the plasma isentropic relation a further extension is to include viscosity and heating. It is found that all extra non-isentropic inclusions further lower the (quasi-) isentropic exponent in the adapted isentropic relation

  10. Distortions in Judged Spatial Relations.

    Science.gov (United States)

    Stevens, Albert

    1978-01-01

    Distortions in judgments of relative geographical relations were observed, particularly when the locations were in different geographical or political units. Subjects distorted the judged relation to conform with the relation of the superordinate political unit. A model for the hierachical storage of spatial information is presented. (Author/RD)

  11. Perceptions of Public Relations Education.

    Science.gov (United States)

    Stacks, Don W.; Botan, Carl; Turk, Judy VanSlyke

    1999-01-01

    Surveys 258 public-relations educators and practitioners, finding they agree that public-relations education is on track; that systematic assessment is an important feature of public-relations education; and that they agreed on how public-relations education should be structured, and demonstrated a high degree of similarity in their preferences…

  12. Étude de la variation spatio-temporelle des paramètres physico-chimiques caractérisant la qualité des eaux d'une lagune côtière et ses zonations écologiques : cas de Moulay Bousselham, Maroc

    Science.gov (United States)

    Labbardi, Hanane; Ettahiri, Omar; Lazar, Said; Massik, Zakia; El Antri, Said

    2005-04-01

    Our interest is related to the hydrological characteristics of the Moulay Bousselham lagoon. Water samples were taken monthly from July 2001 to June 2002 in 15 stations distributed along the lagoon. The various measured hydrological parameters (temperature, salinity, suspended matter, chlorophyll a) showed significant monthly variations ( p<0.001), whereas spatially among all sampled stations, only the salinity showed significant variations. The variability analysis approached by the analysis of the normalized principal components combined with discriminate analysis showed very small inter-stations variability. Its percentage is 11% and 9% of the total variance during high and low tide, respectively. To cite this article: H. Labbardi et al., C. R. Geoscience 337 (2005).

  13. Relativity theory - topical

    International Nuclear Information System (INIS)

    Schmutzer, E.

    1979-01-01

    Issued on the occasion of Albert Einstein's 100th birthday the book deals topically with the special and general relativity theory. The latest experiments to confirm the relativity theory are described and the historical development of the theory is presented in detail. Emphasis is given to the disclosure of deep insights into the nature of matter. Of interest to experts in physical and natural sciences and to mathematicians

  14. Organization, relational justice and absenteeism.

    Science.gov (United States)

    Stoetzer, Ulrich; Åborg, Carl; Johansson, Gun; Svartengren, Magnus

    2014-01-01

    There is a need for more knowledge on how to manage companies towards healthier and more prosperous organizations with low levels of absenteeism. Relational Justice can be a useful concept when managing such organizations. Organizational factors can help to explain why some companies have relatively low absenteeism rates, even though they are equal to other companies in many other aspects. Previous studies suggest that management may be one important factor. Efficient management may depend on good relations between the leaders and the employees. The concept of Relational Justice is designed to capture these relations. Consequently, a Relational Justice framework may be used to understand why some companies have a low incidence of absenteeism. Managers from a representative body of Swedish companies. Interviews were analyzed to explore whether the items representing the concept of Relational Justice can be used to further understand the strategies, procedures and structures that characterize organizations and management in companies with a low incidence of absenteeism. Strategies, procedures or principles related to Relational Justice were common and highlighted in companies with an incidence of absenteeism. The most frequently occurring factors were; to be treated with kindness and consideration, personal viewpoint considered and to be treated impartially. The results suggested that a Relational Justice framework could be used to increase understanding of the organizational and managerial factors typical for companies with a low incidence of absenteeism. A Relational Justice approach to organizational management may be used to successfully lower absenteeism, change organizations and promote healthy and prosperous companies.

  15. Granular-relational data mining how to mine relational data in the paradigm of granular computing ?

    CERN Document Server

    Hońko, Piotr

    2017-01-01

    This book provides two general granular computing approaches to mining relational data, the first of which uses abstract descriptions of relational objects to build their granular representation, while the second extends existing granular data mining solutions to a relational case. Both approaches make it possible to perform and improve popular data mining tasks such as classification, clustering, and association discovery. How can different relational data mining tasks best be unified? How can the construction process of relational patterns be simplified? How can richer knowledge from relational data be discovered? All these questions can be answered in the same way: by mining relational data in the paradigm of granular computing! This book will allow readers with previous experience in the field of relational data mining to discover the many benefits of its granular perspective. In turn, those readers familiar with the paradigm of granular computing will find valuable insights on its application to mining r...

  16. Public Relations and Interpersonal Communication.

    Science.gov (United States)

    Lance, Elizabeth P.

    Despite a lack of consensus on theoretical perspectives on public relations and variations in the ways it and interpersonal communication are defined, public relations may be related to interpersonal communication in three ways: (1) it is two-way communication, (2) it is personal, and (3) it is relational. Even in activities having the highest…

  17. Advanced mechanics and general relativity an introduction to general relativity

    CERN Document Server

    Franklin, Joel

    2010-01-01

    Aimed at advanced undergraduates with background knowledge of classical mechanics and electricity and magnetism, this textbook presents both the particle dynamics relevant to general relativity, and the field dynamics necessary to understand the theory. Focusing on action extremization, the book develops the structure and predictions of general relativity by analogy with familiar physical systems. Topics ranging from classical field theory to minimal surfaces and relativistic strings are covered in a homogeneous manner. Nearly 150 exercises and numerous examples throughout the textbook enable students to test their understanding of the material covered.

  18. Measuring the relative importance of strategic thinking dimensions in relation to counterproductive behavior

    Directory of Open Access Journals (Sweden)

    Afsaneh Zamani Moghaddam

    2013-11-01

    Full Text Available The purpose of this paper is to explore the relative importance of strategic thinking dimensions in prediction of counter-productive behavior. The research method is based on a descriptive- Survey research. After collecting the questionnaires from 73 top managers and 110 staffs, the correlations between strategic thinking dimensions and counterproductive behavior were calculated. The relative importance method was used to calculate the relative weight of each dimension of strategic thinking in prediction of counterproductive behaviors. The results show that the strategic thinking of top managers is associated with their counterproductive behavior (correlation coefficient -0.38. Furthermore, The results of the Relative Importance Method indicate that the relative importance of each dimension of strategic thinking in prediction of counterproductive behavior is not the same. System perspective with 31.1% has the highest importance and hypothesis driven with 11.7% has the lowest weight. Intent focus, thinking in time and intelligent opportunism predict 14.1%, 13.3%, and 29.8% of counter-productive changes, respectively.

  19. Relations Between Parental Psychological Control and Childhood Relational Aggression : Reciprocal in Nature?

    NARCIS (Netherlands)

    Kuppens, Sofie; Grietens, Hans; Onghena, Patrick; Michiels, Daisy

    2009-01-01

    Using a cross-lagged panel design, this study examined the directionality of relations between parental psychological control and child relational aggression. Data were collected from a proportionally stratified sample of 600 Flemish 8- to 10-year-old children at 3 measurement points with 1-year

  20. Global general relativity

    International Nuclear Information System (INIS)

    Penrose, R.

    1979-01-01

    Much theoretical work in General Relativity has been concerned with finding explicit solutions of Einstein field equations. Exact solutions must involve simplifying procedures which in the case of strong gravitational fields may not be valid. Computers can help but complementary to these are the global qualitative mathematics that have been introduced into relativity over the past years. These have shown that Einstein's equations together with suitable inequalities on the energy-momentum tensor can lead inevitably to space-time singularities arising, provided that some qualitative geometric criterion is satisfied. It seems that in suitable situations of gravitational collapse this criterion will be satisfied. Similarly in a cosmological setting the criterion can be applied in the reverse direction in time. There is, however, the unsolved problem in general relativity of cosmic censorship and this is discussed as a consequence of Einstein's equations. (UK)