Model Calculations and Implementation of Filters and Hybrid Green VCSELs based on Optical Thin Film Stacks

This work introduced the novel conception of complex coupled hybrid VCSELs for the first time. Alternating organic and inorganic layers in the lasers provide periodic variation of refractive index and optical gain, which enable single mode operation and low threshold of the VCSELs. Model calculations revealed great reduction of the lasing threshold with factors over 30, in comparison with the existing micro-cavity lasers. Tunable green VCSEL has been also designed, implemented and analyzed taking advantage of the broad photoluminescence spectra of the organics. Free standing optical thin films without compressive stress are technologically implemented. Multiple membrane stacks with air gap in between have been fabricated for the implementation of complex coupled VCSEL structures. Complex coupled hybrid VCSEL is a very promising approach to fill the gaps in the green spectral range of the semiconductor lasers.

Factors influencing a conversion to organic farming in Nepalese tea farms

Organic agriculture in developing countries has increased in past decades especially due to the high demand of organic products in developed countries. The rate of conversion to organic production in Nepal, however, is observed much slower than expected. This study investigates factors that determine the conversion to organic production using Nepalese tea producers as a case study. A survey of 181 farmers was conducted in the Ilam and Panchthar district of Nepal, among which 86 were organic farmers and 95 were conventional farmers. A discriminant analysis was used to identify socio-economic characteristics that distinguish conventional and organic farmers. Results from the estimated discriminant function suggest that farmers located in a distance from regional markets, older in age, better trained, affiliated with institutions and having larger farms are more likely to adopt organic production. Similarly, a factor analysis shows that environmental awareness, bright market prospects, observable economic benefit and health consciousness are the major factors influencing farmers’ decisions on the conversion to organic production. While planning programs for the development of the organic tea sector in Nepal, policy makers should consider the support of farmers’ institutions, provision of training to farmers and raise farmers’ awareness about the environmental, economic and health benefits of organic farming.

‘Green Consumption’ beyond mainstream economy: A discourse analysis

In contemporary society, green consumption is a popular concept. The life styles of people and consumption behaviors are moderated in accordance to the ‘green ideology’. The process of green consumption can be observed through social behaviors such as preference of bio foods, recycling, reusing, limiting the over consumption and using environmentally friendly transport systems. However, mainstream economic analyses on green consumption argued that consumer behaviors are due to the rational choice of individuality based on utility and self-preferences. The hypothesis of this paper on consumer behavior in green consumption is configured by discourses according to the discourse analysis.

From Subsistence Agriculture to Commercial Enterprise: Community management of green technologies for resilient food production

The aim of this paper is to emphasize the capacity and resilience of rural communities in regard to sustainable food security by adopting innovative approaches to irrigation. The shift from subsistence to commercial agriculture is promoted as a means to sustainable development. An analysis of the efficacy of irrigation schemes in Zimbabwe suggests that, in terms of providing sustainable agricultural production, they have neither been cost-effective nor have they provided long-term food security to their beneficiaries. This is certainly true of Shashe Scheme and most others in Beitbridge District. The Shashe Irrigation Scheme project represents a bold attempt at developing a fresh approach to the management of communal land irrigation schemes through a Private Public Community Partnership. The model illustrated represents a paradigm shift from subsistence agriculture to a system based on new technologies, market linkages and community ownership that build resilience and lead to sustainable food security and economic prosperity.

Validación predictiva del TEA-2.

Averiguar la validez predictiva del TEA-2, y de cada uno de sus factores, tomando como criterio las calificaciones escolares de los alumnos de octavo de EGB en las áreas de Lenguaje, Matemáticas, Naturales y Sociales, así como la global de nivel al finalizar el curso escolar. 150 alumnos de octavo nivel de EGB de tres colegios públicos del Valle del Nalón. Utiliza el modelo de validez predictiva para una medida empírica de criterio externo con un único grupo de sujetos. TEA-2 de Thurstone. Calificaciones escolares. Cálculo a partir de las puntuaciones directas del coeficiente de correlación producto-momento de Pearson. Cálculo también de los coeficientes d, k y e, y los errores típicos de estimación para obtener una visión más amplia de la utilidad predictiva del TEA-2. Todas las correlaciones (coeficientes de validez) resultan significativas. Globalmente considerado, el TEA-2 tiene la suficiente validez como para servir de predictor del rendimiento académico en las áreas fundamentales del currículum, especialmente en lo referente a predicciones grupales. Teniendo en cuenta cada uno de los factores, hay que destacar el inferior valor predictivo cuando se usan las calificaciones del área de Lenguaje como criterio.

Young Europe Goes Green. 'La Europa joven marcha en verde' : proyecto Comenius, IES Virgen de la Luz, Avilés.

Young Europe Goes Green es el proyecto multidisciplinar que coordina el IES Virgen de la Luz de Avilés y en el que participan otros cinco centros de Bélgica, Francia, Suecia, Turquía y Portugal. Desarrollado durante los cursos 2008-2009 y 2009-2010 tiene como objetivos: el compromiso con la preservación del medio ambiente, el reciclado de materiales y el cuidado del entorno; la adopción de hábitos de vida saludables, mediante el ejercicio físico y la alimentación equilibrada; el interés por las lenguas de los países participantes, además del inglés, que es la lengua adoptada en el trabajo colaborativo; el desarrollo de la creatividad y el uso de las Tecnologías de la Información y la Comunicación como herramienta imprescindible en la escuela y en la vida actual. Se describen las actividades escolares ligadas a estos objetivos.

Redacció del programa "Commited to green" al Golf Girona

Es realitza un informe que possibiliti una futura implantació del “Committed to Green” al Golf Girona. Concretament, es redacta la declaració de principis de la política de l’empresa, s'estudia l’estat actual de l’entorn del golf mitjançant una Revisió Ambiental i es redacta el Pla de Gestió Ambiental

Coffee and tea: viatge d'estudis de segon d'Educació Social a Holanda

Els estudiants de segon d'Educació Social vàrem anar a Eindhoven (Holanda) la setmana del 5 al 8 de febrer de 2008 amb dos objectius: veure com és la realitat dels centres educatius en aquest país i gaudir de les estones lliures del viatge tots plegats. Hem fet aquest article per poder-vos explicar la nostra experiència durant aquests dies i compartir com és la feina dels educadors en aquest país i el funcionament dels centres en els quals treballen, sense oblidar-nos de la vesant més lúdica

Plan de negocios para una empresa de servicios eco turísticos: Promotora TEA Ltda

El presente Trabajo de Grado tiene como objetivo, estudiar la viabilidad económica, ecológica y social para la creación de una empresa especializada en servicios turísticos y jornadas ecológicas, con sede para sus actividades en el municipio de La Vega (Cundinamarca). Se podrán identificar cuáles son las oportunidades de negocio que le brinda el mercado en la ciudad de Bogotá y sus alrededores para que la empresa Promotora TEA Ltda, pueda desempeñare sus actividades de manera perdurable, dadas las condiciones actuales para satisfacer de la mejor manera las necesidades de sus clientes. Con tal fin, se presenta un análisis externo e interno, que incluye la investigación del sector económico a nivel nacional y local de la empresa con el fin de identificar las estrategias más favorables para la creación de la Promotora TEA Ltda. Se podrán identificar los mercados potenciales y las oportunidades de crecimiento, tanto el sector turístico como en la exploración ecológica y sustentable de los recursos del municipio para garantizar un aprendizaje vivencial de cada consumidor.

Green ICT poster

This is a poster advertising our resource and talking about green ICT. This has been created for the INFO2009 course.

INFO2009 Coursework - Green ICT Resource

A collection of resources including a website about Green ICT.

Green ICT Resource Set - INFO2009 Coursework, Bobs' Finest Group

Online resource set which details in full the Green ICT topic and associated areas. Online multiple choice quiz also included to test readers knowledge of topic once the tutorial has been read.

INFO2009 Resource - Green ICT website

A link to our Green ICT resource

Green ICT reference list for the module INFO2009

This is a reference list pertaining to green ICT, it contains a range of references varying from white papers to youtube videos, we hope it is useful.

Collection of Green ICT resources, created for INFO2009

This collection contains a website as a resource containing details and a quiz about green ICT, a reference list and a poster done in conference style advertising our resource and green ICT issues within the University.