3,315 research outputs found

    How is own account transport well adapted to urban environments?

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    Own account transport is commercially invisible but its importance in urban freight is significant: it represents half of deliveries. Generally research efforts focus mainly on third-party transportation because data is more available in spite of a lack of urban data. Nevertheless, the organization of transport by a shipper is not the same than third-party transport. The products transported, the constraints, the demand of transport are different. This analysis shows that own account transport is well-adapted to urban areas because of the density of deliveries and an increase of the number of establishments of the shipper who extends its areas of customer and makes profitable its fleet.urban freight ; own account transport ; density of deliveries ; time delivery

    Alfabetizaci贸n digital y cultura popular en la escuela: una aproximaci贸n cualitativa

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    La implantaci贸n de las denominadas Tecnolog铆as de la Informaci贸n y la Comunicaci贸n (TIC) est谩 produciendo grandes transformaciones en nuestra sociedad y la escuela se enfrenta al dif铆cil reto de integrar estos cambios, vinculando los procesos educativos con otros contextos de desarrollo del alumnado, en la perspectiva de generar aprendizajes significativos reconociendo la importancia y el papel que juega la cultura en la construcci贸n del sujeto. Presentamos una investigaci贸n de car谩cter sociocultural que se fundamenta en una perspectiva de an谩lisis de car谩cter cualitativo y cuyo objetivo general es analizar un escenario educativo mediado por las TIC, en el cual la cultura popular contribuye, por una parte, al uso contextualizado y significativo de estos nuevos instrumentos culturales y, por otra, a favorecer en los ni帽os y ni帽as procesos de toma de conciencia de la propia identidad cultural. Participaron voluntariamente un grupo de diecis茅is ni帽os y ni帽as, entre nueve y doce a帽os de edad, durante un total de doce sesiones de aproximadamente dos horas de duraci贸n cada una, y en el que las propias investigadoras asumimos un doble papel: docentes y observadoras participantes. Tratamos de responder a preguntas relacionadas con el dise帽o de la experiencia educativa, elementos espec铆ficos y diferenciadores que aporta el uso de TIC y procesos de alfabetizaci贸n y construcci贸n de identidad colectiva.The introduction of so-called Information Technology and Communication (ICT) is causing major changes in our society and school faces the difficult challenge of integrating these changes, linking educational processes to other contexts of students鈥 development in perspective to generate significant learning, recognizing the importance and the role that culture plays in the construction of the student. We present a socio-cultural research that is based on a perspective of qualitative analysis and whose overall objective is to analyze an educational setting mediated by ICT, in which popular culture contributes to contextualized and meaningful use of these new cultural instruments, and also to encourage awareness processes of cultural identity in children. A group of sixteen children, aged between nine and twelve years old, voluntarily participated in a total of twelve sessions of approximately two hours each, and the researchers themselves assume a dual role: teachers and observers participating. We try to answer questions related to the design of the educational experience of the elements that provides the use of ICT and literacy and construction processes of collective identity

    Evolucionismos y teor铆a de la Complejidad

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    En el libro Complejidad: ciencia, pensamiento y aplicaci贸n Maldonado (2007), sostiene que existen dos grandes comprensiones de complejidad ''indiferentes entre s铆, distantes incluso". La que entiende la complejidad como ciencia y aquella que la considera en cambio, un m茅todo de investigaci贸n (Maldonado, 2007: 19). En el cap铆tulo de su autor铆a, "Complejidad y evoluci贸n", relaciona de manera expl铆cita y necesaria, la teor铆a evolutiva, cuyo origen establece en el siglo XVI y la teor铆a de la complejidad; ambas, a煤n en desarrollo

    The diverse and difficult transition of Justice in Latin America

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    El presente estudio busca aprehender el devenir del Poder Judicial en Am茅rica Latina entre 1980 y 2000, observando desde un prisma institucional las modalidades de nominaci贸n y nombramiento, el tipo de mandato y el control constitucional de los miembros del Tribunal judicial de mayor envergadura. Para ello se llev贸 a cabo una comparaci贸n que tom贸 en cuenta tres grupos de pa铆ses latinoamericanos que en este periodo transitaron hacia la instauraci贸n o consolidaci贸n de un r茅gimen democr谩 tico: pa铆ses con un pasado autoritario (Panam谩, Bolivia, Brasil y Chile), pa铆ses con un pasado de guerras civiles (El Salvador, Nicaragua y Guatemala) y pa铆ses sin quiebres autoritarios o enfrentamientos armados (M茅xico, Colombia, Venezuela y Costa Rica).This paper seeks to study the process of democratization of Judicial Power in Latin America between 1980 and 2000, using an institutional prism of analysis. We will center our attention on members of Superior Court of Justice ways of nomination, designation, and kind of mandate by one side and constitutional revision by the other side. We compare these two moments, and the recently mentioned dimensions of analysis, in three groups of Latin American countries: a) those with an authoritarian regime during 1980 (Panam谩, Bolivia, Brazil y Chile); b) with a civil war during 1980 (El Salvador, Nicaragua y Guatemala) and c) with a civil state in 1980 (M茅xico, Colombia, Venezuela y Costa Rica).Fil: Hern谩ndez Cruz, Cecilia. Tribunal Electoral del Poder Judicial de la Federaci贸n; M茅xicoFil: Lucca, Juan Bautista. Universidad Nacional de Rosario; Argentina. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas; Argentin

    The QUEST RR Lyrae Survey: III. The Low Galactic Latitude Catalogue

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    We present results for the QUEST RR Lyrae Survey at low galactic latitude, conducted entirely with observations obtained with the QUEST mosaic camera and the 1.0/1.5m J\"urgen Stock Schmidt telescope at the National Observatory of Venezuela. The survey spans an area of 476 sq. deg on the sky, with multi-epoch observations in the V, R and I photometric bands for 6.5x10^6 stars in the galactic latitude range 30<= b(deg) <=+25, in a direction close to the Galactic Anticenter 190<= l(deg)<= 230. The variability survey has a typical number of 30 observations per object in V and I and ~25 in R, with up to ~120-150 epochs in V and I and up to ~100 in R in the best sampled regions. The completeness magnitudes of the survey are V=R=18.5 mag, and I=18.0 mag. We identified 211 RR Lyrae stars, 160 bona fide stars of type ab and 51 candidates of type c, ours being the first deep RR Lyrae survey conducted at low galactic latitude.The completeness of the RR Lyrae survey was estimated in >95 per cent and ~85 per cent for RRab and RRc stars respectively. Photometric metallicities were computed based on the light curves and individual extinctions calculated from minimum light colours for each RRab star. Distances were obtained with typical errors ~7 per cent. The RR Lyrae survey simultaneously spans a large range of heliocentric distances 0.5<= R_hel(kpc)<=40 and heights above the plane -15<=z(kpc)<=+20, with well known completeness across the survey area, making it an ideal set for studying the struc ture of the Galactic thick disk.Comment: 24 pages, 17 figures, 8 tables. Accepted for publication in MNRA

    Latino Voting in the 2004 Election: The Case of New York

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    This paper examines the participation of Latinos in the electoral process in New York State. It describes key features of the demographic and political context in which Latino participation takes place and provides an analysis of the Latino presence and role during the 2004 campaign. The paper also includes an analysis of Latino registration and turn-out patterns in the presidential race. Most of the literature on Latinos in New York quite sensibly focuses on activities in New York City. This paper for the first time analyses Latino registration, turnout, and voting patterns in the state as a whole. The patterns of participation we found statewide suggest that when thinking about Latino politics in New York it is inappropriate to see New York state as simply New York City writ large. We conclude that naturalization, enfran-chisement of Latino felons, and a more aggressive practice of quid pro quo politics are three elements that Latino leaders, activists, and elected officials in New York ought to consider to invigorate the Latino electorate, to increase Latino political representation, and to promote the socioeconomic well-being of the community throughout the state

    Actividades sobre gr谩ficos estad铆sticos en libros de texto de ciencias naturales de educaci贸n primaria chilena

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    En el campo de las ciencias naturales los gr谩ficos estad铆sticos son considerados objetos matem谩ticos que facilitan la comprensi贸n de los fen贸menos naturales, permitiendo comunicar resultados de experimentos. Dada esta relevancia es que analizamos la presencia de los gr谩ficos estad铆sticos en libros de texto de Ciencias Naturales de Educaci贸n Primaria en Chile

    Colestasis intrahep谩tica gestacional como factor de riesgo para hemorragia posparto en Hospital Nacional Alberto Sabogal Sologuren

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    Objetivo: Demostrar que la colestasis intrahep谩tica gestacional es un factor de riesgo para hemorragia posparto en el Hospital Nacional Alberto Sabogal Solog煤ren durante el periodo 2015 -2016. Material y m茅todos: Se realiz贸 un estudio de tipo observacional, descriptivo, retrospectivo de cohortes, con base poblacional de quienes fueron hospitalizadas en el Hospital Nacional Alberto Sabogal Solog煤ren en la provincia del Callao durante el per铆odo 2015 al 2016. La poblaci贸n de estudio est谩 constituida para la cohorte 1 por 72 pacientes y en la cohorte 2 se incluyeron a 144 pacientes sin el diagn贸stico de colestasis intrahep谩tica gestacional, cumpliendo los criterios de inclusi贸n y exclusi贸n. Resultados: La cohorte 1 presento hemorragia posparto en 16.7% y la cohorte 2 en 3.5%. RR: 5.56 IC 95% [1.876-16.476], estad铆sticamente significativo (p=0.01), X : 11.525. Conclusiones: La colestasis intrahep谩tica gestacional es un factor de riesgo para hemorragia postparto en el Hospital Nacional Alberto Sabogal Solog煤ren en el per铆odo 2015 鈥 2016.Objective: To demonstrate that intrahepatic gestational cholestasis is a risk factor for postpartum hemorrhage at the Alberto Sabogal Sologuren National Hospital during the period 2015-2016. Material and methods: An observational, descriptive, retrospective cohort study was conducted with a population base who were hospitalized at the Alberto Sabogal Sologuren National Hospital in the province of Callao during the period 2015 to 2016. The study population is constituted for the cohort 1 of 72 patients and in the cohort 2 included 144 pregnant women without the diagnosis of intrahepatic cholestasis fulfilling the inclusion and exclusion criteria. Results: Cohort 1 presented postpartum hemorrhage in 16.7% and cohort 2 in 3.5%. RR: 5.56 95% CI [1,876-16,476], statistically significant (p = 0.01), X2: 11,525. Conclusions: Gestational intrahepatic cholestasis is a risk factor to postpartum hemorrhage at the Sologuren Alberto Sabogal National Hospital in the period 2015 - 2016.Tesi

    Manejo de dolor agudo en pacientes con traumas m煤ltiples ingresados en el servicio de cirug铆a del Hospital Nacional San Rafael

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    El manejo del dolor agudo es un problema de salud p煤blica ya que no tiende a no bien tratado; es por eso que la Organizaci贸n Mundial de la Salud cre贸 la escalera analg茅sica en base a la escala verbal num茅rica. Se realiz贸 un estudio observacional, anal铆tico de corte transversal, bi-et谩pico, en el cual se caracterizaron los episodios de dolor de los pacientes con traumas m煤ltiples ingresado en el servicio de cirug铆a general del Hospital Nacional San Rafael durante 24 horas y se demostr贸 que existe un bajo grado de pertinencia en cuanto al uso de los analg茅sicos. As铆 mismo se evidenci贸 un bajo nivel de conocimientos y actitudes sobre el manejo de dolor por parte del personal de enfermer铆a, practicantes internos y m茅dicos del servicio de cirug铆a. Con el prop贸sito de mejorar la atenci贸n brindada a los pacientes es necesario crear un protocolo sobre el manejo de dolor agudo e implementar capacitaciones sobre para el personal de salud.Tesis presentada para optar al t铆tulo de Doctorado en Medicin
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