Saltar navegación e ir al contenido principal
Biblioteca digital de Bogotá
Logo BibloRed
Cargando contenido
¿Qué estás buscando?
  • Escribe palabras clave como el título de un contenido, un autor o un tema que te interese.

  • Búsqueda avanzada

Seleccionar

Contenidos y Experiencias Digitales

Filtrar

Formatos de Contenido
Tipo de colección
Género
Idioma
Derechos de uso

Selecciona contenidos según las condiciones legales para su uso y distribución.

Estás filtrando por

Cargando contenido

Se encontraron 3946 resultados en recursos

Imagen de apoyo de  Valuing children at school: Case Study of two primary school classrooms in a West London school = Valorando a los niños en el colegio: estudio de caso en dos salones de clase de una escuela primaria en Londres

Valuing children at school: Case Study of two primary school classrooms in a West London school = Valorando a los niños en el colegio: estudio de caso en dos salones de clase de una escuela primaria en Londres

Por: Luz Adriana Chávez Villegas | Fecha: 2006

The study will be based on an anthropological view of learning in which the central idea is to find out how people become to be who they are. On that account, it will be interested in the social influences of the environment people are settled in, as well as the individual’s agency in their process of making sense of their experience. The discovery of the common practices individuals execute at a particular setting –as it is the school- will be one of the aims of this study that is to contribute to the revelation of the social relations structured within the community. Studying deeper these social relations structured in practice (Lave & Wegner, 1991) and in the material dispositions, will bring us to an understanding of how people are valued in the specific situations inside a particular society. On that account, I am concerned with the idea of what it means to be a child and how children come, in particular contexts, like educational institutions, to be valued in historically specific ways. Taking two primary school classrooms in a West London school as my case study, I analyse how value is created as the outcome of socially structured processes of interaction between teachers and children and between children themselves. Comparing and contrasting the teachers’ ideas of what makes children valued at school, I describe how the structuring influence exerted by the teachers in the classroom infringe on the formation of friendship relations among the children. 
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros

Compartir este contenido

Valuing children at school: Case Study of two primary school classrooms in a West London school = Valorando a los niños en el colegio: estudio de caso en dos salones de clase de una escuela primaria en Londres

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  Strategic service management for platforms in the decline stage and post product life cycle at ASML = Gestión estratégica de servicios logísticos para maquinaria a lo largo del ciclo de vida del producto

Strategic service management for platforms in the decline stage and post product life cycle at ASML = Gestión estratégica de servicios logísticos para maquinaria a lo largo del ciclo de vida del producto

Por: Juan Pablo Rolón Paz | Fecha: 2011

In order to receive the title of Master of Science in Industrial Engineering and Management, the author Juan Pablo Rolón Paz, developed the current Master Thesis, which by the hand of the Dutch company ASML Holding, identified, described and analysed strategies to service generations of machines developed by ASML, now referred as platforms, during the decline stage and post Product Life Cycle (PLC). ASML is a company that designs, develops, integrates, markets and services machines to create chips that power electronic, communications, and information technology products. The services provided by ASML include spare parts, tooling and labour. ASML is characterised to offer perpetual support for their products. They service their recently released equipment, to the ones developed over the life of the company. In this light, ASML wants to identify strategies to service their platforms during the decline stage of product life cycle. This means, strategies to service their aged platforms. ASML is interested in identifying the criteria for deciding whether to stop offering their service products or not, and in the situation they agree to stop offering their service products, what approaches to take regarding post PLC.  To identify strategies to service platforms in the decline stage and post PLC, we decided to do a literature and benchmarking study, to get the best practices in service management, service parts management and service parts logistics for aged products. We met with people within ASML, and people of other companies in The Netherlands, and the United States of America. The results were triangulated with the information gathered through the literature research, meetings with experts on product life cycle and spare parts management, and having feedback from managerial people of ASML. In the next chapter, we define the research, developing the research statement, objectives, questions, scope, delineation, deliverables, method and structure.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros
  • Ingeniería

Compartir este contenido

Strategic service management for platforms in the decline stage and post product life cycle at ASML = Gestión estratégica de servicios logísticos para maquinaria a lo largo del ciclo de vida del producto

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  Environmental policy integration in Colombia’s large-scale mining sector. Does the idea of an environmentally responsible mining proposed by Colombia’s National Development Plan lead to environmental policy integration?

Environmental policy integration in Colombia’s large-scale mining sector. Does the idea of an environmentally responsible mining proposed by Colombia’s National Development Plan lead to environmental policy integration?

Por: Santiago Briceño Flórez | Fecha: 2013

On the basis of Colombia´s National Development Plan – NDP (2010-2014), this paper assesses whether the idea of an environmentally responsible mining is leading to Environmental Policy Integration (EPI) in Colombia’s Large-scale mining sector. From a political ecology perspective, the literature review discusses the concept of responsibility in the context of environmental governance. Beyond the EU and OECD jurisdictions, this represents a useful theoretical approach to consider EPI as a principle, its institutional features and the main challenges to enable policy learning between different stakeholders. Complemented with primary and secondary data, the proposed assessment is performed. Conclusions and policy implications suggest that Colombia´s NDP represents a valuable platform setting the main institutional factors for EPI, despite the existence of major barriers impeding to advance in a long and challenging policy-learning process.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros
  • Ciencias sociales

Compartir este contenido

Environmental policy integration in Colombia’s large-scale mining sector. Does the idea of an environmentally responsible mining proposed by Colombia’s National Development Plan lead to environmental policy integration?

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  Attitudes towards body size and physical appearance among Colombian and American college students:A Multi-cultural Study = Actitudes hacia el tamaño del cuerpo y apariencia fisica en estudiantes universitarios Colombianos y Americanos: Un Estudio Multi-C

Attitudes towards body size and physical appearance among Colombian and American college students:A Multi-cultural Study = Actitudes hacia el tamaño del cuerpo y apariencia fisica en estudiantes universitarios Colombianos y Americanos: Un Estudio Multi-C

Por: Natalia Rojas Segura | Fecha: 2009

The current study analyzed attitudes towards size and physical appearance among four hundred and seventy Colombian and two hundred and ten American college students. The effects of gender and culture (and their interaction) on thin ideal internalization, sociocultural pressure to be thin, and body image dissatisfaction were examined in the sample.  Results from the study showed that there are differences between gender and country: Colombian students perceived themselves as having a better body image overall compared to American students; females from both countries had a lower body image satisfaction compared to males. Surprisingly, males from both countries worry about their physical size and appearance. Implications for future research include validating instruments especially for a Colombian population, as well as continuing to include males in studies related to body image and eating disorders because it was found that they were also unsatisfied with their overall body image. 
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros
  • Medicina

Compartir este contenido

Attitudes towards body size and physical appearance among Colombian and American college students:A Multi-cultural Study = Actitudes hacia el tamaño del cuerpo y apariencia fisica en estudiantes universitarios Colombianos y Americanos: Un Estudio Multi-C

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  The American Dream’s Sojourn in Latin America: the dynamics of irregular and mixed migration flows through Ecuador and Colombia = La suspensión del sueño americano en Latinoamerica: las dinámicas de los flujos migratorios irregulares y mixtos

The American Dream’s Sojourn in Latin America: the dynamics of irregular and mixed migration flows through Ecuador and Colombia = La suspensión del sueño americano en Latinoamerica: las dinámicas de los flujos migratorios irregulares y mixtos

Por: Ursula Bianca Wagner | Fecha: 2011

Scholars generally agree that irregular migration is the direct consequence of the restrictionist and containment policies that have been used by states to keep immigrants outside their borders. This creates a dynamic that has three significant parts. First, restrictive border policies and practices drive refugees, asylum-seekers, and other migrants to resort to the use of irregular migration in order to reach their destinations. Second, the use of this type of migration, in particular the use of human smugglers, criminalizes and de-legitimizes refugees and asylum-seekers, and consequently third, this continues to legitimize states’ restrictionist practices. This dissertation argues that the dynamic described above is either 1) facilitated by media discourses and constructed to portray irregular migrants as a social and economic threat or 2) challenged by media discourses portraying irregular migrants as helpless victims. This dissertation explains the above-mentioned dynamics by examining the cases of Colombia and Ecuador and by providing a critical discourse analysis of written media in both countries.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros

Compartir este contenido

The American Dream’s Sojourn in Latin America: the dynamics of irregular and mixed migration flows through Ecuador and Colombia = La suspensión del sueño americano en Latinoamerica: las dinámicas de los flujos migratorios irregulares y mixtos

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  Evaluation of Activated Carbon for Treating Heavy Metals in Aquaculture

Evaluation of Activated Carbon for Treating Heavy Metals in Aquaculture

Por: William Camargo Navarro | Fecha: 1995

Aquaculture operations over the years have suffered a dramatic change because of the increasing levels of industrial and agricultural contaminants in the aquatic environment. Several methods have been studied to reduce the negative contribution of contaminated effluents in the ecosystem. The method studied in this research was the use of activated carbon sorption as a feasible method to reduce the influent and effluent load of heavy metals and other harmful pollutants present mainly in fresh water aquaculture installations. The sorption of Cd, Cu, Ni, Hg, Pb, and phenol-based compounds was evaluated using batch adsorption isotherms and breakthrough experiments in packed GAC vertical columns. Both experimental facets are commonly used as scaling up techniques in the waste water treatment technology. Adsorption of Cd, Cu, Pb, and phenol occurred at different rates for each toxic contaminant, with Cd being the most readily adsorbed pollutant. The analytical determination of nickel and mercury presented some difficulties, possibly due to the analytical procedures followed. Analysis of the breakthrough curves for Cd, Cu, Ni, Pb and phenol, after the samples were passed through the columns showed that the concentration of all contaminants was reduced to a minimum value. These results support similar conclusions mentioned by several authors in the literature. The results of this research proved that activated carbon technology can be applied in aquaculture; its use however will be limited because of the high costs involved in design and development, particularly in large scale aquaculture practices.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros
  • Agricultura

Compartir este contenido

Evaluation of Activated Carbon for Treating Heavy Metals in Aquaculture

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  Estimation of electric energy demand using 3D city models = Modelos 3D de ciudades como herramienta para la estimación de la demanda energética

Estimation of electric energy demand using 3D city models = Modelos 3D de ciudades como herramienta para la estimación de la demanda energética

Por: Camilo Alexander León Sánchez | Fecha: 2013

In this master thesis, a methodology for the estimation of electrical energy demand of buildings using a 3D city model is presented. The idea of include that kind of data lies in the fact that nowadays those models are rich of geometric and semantical data, which could be useful in energy demand forecasting. The first part of the document introduces the basic concepts of the Geographic Information Systems, the CityGML standard and the Web Map Services. As well as the introduction of basic concepts of energy and the presentation of several methods for the estimation of electrical energy demand. After the presentation of the different methodologies, the selection of the End-Use method is done, which is the one that better suits the scope of this master thesis. After the selection of the method to use, a better presentation of its characteristics is done. Later the comprehensive tools for processing CityGML files are presented, giving a description of their characteristics and why are they considered. After this chapter the problem statement of the master thesis is done. In the following chapter the methodology for the estimation of electrical energy demand is done, first from a theoretical perspective being detailed in every single step of the process at the end the chapter is concluded by the presentation of the work-flow diagram that better states the ideas presented. After this chapter the results of an area of study used in the implementation part of the master thesis are shown, in this section the methodology is evaluated and some adjustments to the initial idea are done. The final chapter of this document is dedicated to the conclusions and the presentation of further researches that could take place after.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros

Compartir este contenido

Estimation of electric energy demand using 3D city models = Modelos 3D de ciudades como herramienta para la estimación de la demanda energética

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  Long-term Impacts of Conditional Cash Transfers on the Rural Youth: Evidence from Mexico’s Oportunidades program

Long-term Impacts of Conditional Cash Transfers on the Rural Youth: Evidence from Mexico’s Oportunidades program

Por: Irene Clavijo Muñoz | Fecha: 2012

Despite ample evidence about the short-term impacts of conditional cash transfer (CCT) programs on education and health outcomes, little is known about their long-term effects. This paper evaluates the longer-run impacts (after nearly 10 years) of Mexico’s renowned CCT program Oportunidades, on the rural youth. In particular, it examines the effects of differential exposure to the program (of 1.5 additional years) on education and employment outcomes as well as adult life-style decisions (marriage and migration). The results do not show strong evidence of significant long-term impacts on education (except for the elder youth). There is some of evidence that early exposure to Oportunidades is associated with a higher probability of engaging in certain types of jobs. However, there is no indication of a shift away from agricultural activities. Finally, there is some evidence suggesting that longer exposure to the program may cause women to delay marriage. This effect could enhance women’s possibilities of participating in the labor market (through a reduction or postponement of the domestic workload.) However, finding no significant impact on earnings or probability of employment may imply that in these poor rural communities additional human capital accumulation may not suffice to improve the productive lives of these young adults in the long-run.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros
  • Ciencias sociales

Compartir este contenido

Long-term Impacts of Conditional Cash Transfers on the Rural Youth: Evidence from Mexico’s Oportunidades program

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  The uncloaked women within the LRA: Reintegration of female ex-combatants in Northern Uganda through the utilisation of acquired skills and agency capacity

The uncloaked women within the LRA: Reintegration of female ex-combatants in Northern Uganda through the utilisation of acquired skills and agency capacity

Por: Linda Lorena Sánchez Avendaño | Fecha: 2012

During twenty years of sustained conflict, boys and girls in Uganda suffered a commensurable number of atrocities as abductees in the Lord’s Resistant Army (LRA). In general men have been seen as warriors and fighters whereas women have been seen mainly as “wives” in charge of practical support and catering of the rebels. This is a simplistic perception that has affected the design and delivery of reintegration programmes in Northern Uganda since it does not consider other types of involvement and roles that particularly female combatants performed inside of the LRA. This dissertation draws upon testimony from female ex-combatants and interviews with different organisations working on reintegration of former combatants and local authorities. Primary information, secondary data and theoretical concepts are linked to demonstrate that the approach used in the reintegration of female ex-combatants in Northern Uganda has not included an extensive comprehension of the change in gender roles and relations during the war. As a result, these programmes have largely failed countering stigmatisation and harnessing the social and technical skills learnt by women during abduction, their agency capacity and their economic potential at the community level. This thesis offers some alternatives and recommendations to include a broader analysis of gender roles and ‘capabilities’ in order to contribute to outline hybrid forms of peace and opportunities to reintegrate female ex-combatants into society after six years of relative peace from 2006 to 2012 in the region.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros

Compartir este contenido

The uncloaked women within the LRA: Reintegration of female ex-combatants in Northern Uganda through the utilisation of acquired skills and agency capacity

Copia el enlace o compártelo en redes sociales

Imagen de apoyo de  Effects of higher portions of variable renewable energy in electricity power systems = Efectos en los sistemas eléctricos de potencia con el incremento de energías renovables variables o intermitentes

Effects of higher portions of variable renewable energy in electricity power systems = Efectos en los sistemas eléctricos de potencia con el incremento de energías renovables variables o intermitentes

Por: Andrés Mauricio Ríos Echeverry | Fecha: 2014

Worldwide electricity power systems are evolving from conventional/dispatchable sources to environmental friendly but Not-dispatchable renewable energy (RE) sources. This has effects on the dynamic of the system and on conventional and RE generators, electricity quality and energy cost. This research identifies the main effects of higher portions of Non-dispatchable RE based on a reference case. An MATLAB/EXCEL “ad-hoc” model has been developed. It simulates the Unit Commitment (UC) and Economic Dispatch (ED) with 10 conventional generators and one zero fuel cost RE generator (Non-dispatchable RE as “study-case” and Dispatchable RE “reference-case”). Results indicated that higher portions of Non-dispatchable RE had a swapping effect where base load units were displaced. Consequently, the system ran at lower cost-efficient point, the number of Start-ups and RE curtailment increased compared to the reference case. Furthermore, conventional generators running cost and system running cost followed the variable pattern of the Non-dispatchable RE source. Meanwhile, these costs were linked to the demand in the reference case. Ultimately, higher portions of Non-dispatchable RE made the system underperform compared to the reference case. Therefore, this incentive technology that lessen unwanted effects. Future studies shall focus on increasing the number of units and complexity of the system by using more powerful software.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
  • Temas:
  • Otros
  • Ingeniería

Compartir este contenido

Effects of higher portions of variable renewable energy in electricity power systems = Efectos en los sistemas eléctricos de potencia con el incremento de energías renovables variables o intermitentes

Copia el enlace o compártelo en redes sociales

Selecciona las Colecciones en las que vas a añadir el contenido

Para consultar los contenidos añadidos busca la opción Tus colecciones en el menú principal o en Mi perfil.

Mis colecciones

Cargando colecciones

¿Deseas limpiar los términos de la búsqueda avanzada?

Vas a limpiar los términos que has aplicado hasta el momento para poder rehacer tu búsqueda.

Selecciona las Colecciones en las que vas a añadir el contenido

Para consultar los contenidos añadidos busca la opción Tus colecciones en el menú principal o en Mi perfil.

Mis colecciones

Cargando colecciones