863 resultados para Castellà -- Determinants -- Congressos


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Households in much of the tropics depend for their livelihoods on the variety and continued production of food and other products that are provided by their own farms. In such systems, maintenance of agrobiodiversity and ensuring food security are important for the well being of the population. The enset-coffee agroforestry homegardens of Southern Ethiopia that are dominated by two native perennial crops, Coffee (Coffea arabica L.) and Enset (Enset ventricosum Welw. Cheesman), are examples of such agricultural systems. This study was conducted in Sidama administrative zone of Southern Ethiopia to determine the factors that influence the diversity and composition of crops in the systems. Data were collected from 144 sample homegardens selected from four districts. Stepwise multiple regression analysis was used to relate indices of crop diversity and area share of major crops with the physical and socioeconomic factors. The study revealed that socioeconomic factors, mainly proximity to markets, affected negatively crop species richness. The production area of the main crops enset and coffee decreased with increasing proximity to market and road while that of maize and khat increased. At household level, farm size had a significant effect on area share of enset and coffee. As farm size increased the share of the cash crop, coffee increased but that of the staple, enset declined. Enset, which is the backbone of the system in terms of food security, is declining on small farms and the share of monoculture maize system is increasing. The trend towards declining agrobiodiversity, and reduction in the production area of the main perennial crops and their gradual replacement with monoculture fields could make the systems liable to instability and collapse. As these sites are high potential agricultural areas, intensification can be achieved by integrating high-value and more productive crops, such as fruits, spices and vegetables, while maintaining the integrated and complex nature of the systems.

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Poor adaptation to climate change is a major threat to sustainable rice production in Nigeria. Determinants of appropriate climate-change adaptation strategies used by rice farmers in Southwestern Nigeria have not been fully investigated. In this study, the determinants of climate change adaptation strategies used by rice farmers in Southwestern Nigeria were investigated. Data were obtained through Focus Group Discussions (FGDs) and field survey conducted in the study areas. Data obtained were analyzed using descriptive and inferential statistical tools such as percentage and regression analysis. The major climate change adaptation strategies used by the respondents included; planting improved rice variety such as Federal Agricultural Research Oryza (FARO) (80.5 %), seeking early warning information (80.9 %), shifting planting date until the weather condition was favourable (99.1 %), and using chemical fertilizer on their farms in order to maintain soil fertility (20.5 %). The determinants of climate change adaptation strategies used by the farmers, included access to early warning information (β=43.04), access to fertilizer (β=5.78), farm plot size (β=–12.04) and access to regular water supply (β=–24.79). Climate change adaptation required provision of incentives to farmers, training on drought and flood control, and the use of improved technology to obtain higher yield.

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This paper estimates a translog stochastic production function to examine the determinants of technical efficiency of freshwater prawn farming in Bangladesh. Primary data has been collected using random sampling from 90 farmers of three villages in southwestern Bangladesh. Prawn farming displayed much variability in technical efficiency ranging from 9.50 to 99.94% with mean technical efficiency of 65%, which suggested a substantial 35% of potential output can be recovered by removing inefficiency. For a land scarce country like Bangladesh this gain could help increase income and ensure better livelihood for the farmers. Based on the translog production function specification, farmers could be made scale efficient by providing more input to produce more output. The results suggest that farmers’ education and non-farm income significantly improve efficiency whilst farmers’ training, farm distance from the water canal and involvement in fish farm associations reduces efficiency. Hence, the study proposes strategies such as less involvement in farming-related associations and raising the effective training facilities of the farmers as beneficial adjustments for reducing inefficiency. Moreover, the key policy implication of the analysis is that investment in primary education would greatly improve technical efficiency.

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Oferim als estudiants universitaris i als lectors interessats aquesta guia didàctica de la matemàtica universitària com a fruit dels nostres anys de docència de les matemàtiques a la Universitat. El resultat final ha esdevingut una col·lecció de setze petits volums agrupats en els dos mòduls d'Àlgebra Lineal i de Càlcul Infinitesimal. Dins la part d’Àlgebra matricial, aquest volum és continuació natural de l’anterior, Matrius, ja que el determinant és un valor numèric que s’associa a una matriu quadrada. Amb el seu estudi aconseguirem una notació millor i un criteri unificat de resolució de sistemes d’equacions, diagonalització de matrius, etc., com veurem en els propers volums

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Estudi de la viabilitat tècnica i econòmica de la implantació de la digestió anaeròbia a l’EDAR de Castell-Platja d’Aro per tal de portar a terme un sistema de cogeneració. S’ha estudiant el funcionament actual amb digestió aeròbia i s’ha valorat mitjançant balanços de matèria, energia i econòmics els avantatges i desavantatges de substituir la digestió aeròbia per anaeròbia

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El siguiente es el trabajo de grado de la Facultad de Administración de la Universidad Colegio Mayor de nuestra señora del Rosario para optar por el titulo de Administrador de Empresas. Es un estudio de clima y cultura organizacional en la organización Faber Castell aplicada a su subsidiaria en Colombia Tecnacril Ltda. Empresa dedicada a la producción y comercialización de artículos para escritura y arte. El trabajo busca determinar la cultura y el clima organizacional dentro de la organización determinando características únicas les permite diferenciarse y tendencias a nivel de comportamiento y procesos dentro de la organización y como es reflejado en el entorno en el cual se desarrolla. Para este trabajo se aplico el instrumento para medición de clima (IMCOC) y de cultura en desarrollado por el doctor Carlos Eduardo Méndez Álvarez profesor de la Universidad Colegio Mayor de nuestra Señora del Rosario Los resultados obtenidos nos determinar pautas y aspectos a mejorar o cambiar dentro de la organización en fin de buscar una mayor productividad y por ende competitividad de la misma basándonos en el talento humano como uno de los principales rasgos competitivos dentro de la organización.

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Resumen tomado del autor. Contiene tablas de resultados

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Resumen tomado del autor. Incluye gráficos y tablas de datos. Se adjunta anexo de un ejemplar en blanco del cuestionario dirigido a la población estudiada

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Repaso histórico de las diferentes publicaciones escolares que han surgido de la escuela pública Sant Bartomeu de Alaró (Mallorca) a lo largo de más de 50 años. También se describe la situación de la publicación actual, sus finalidades, objetivos y las actividades que se desarrollan para su elaboración.

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El material forma parte del programa del Departamento de Din??mica Educativa del Ayuntamiento de Palma de Mallorca

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El presente material se dirige al alumnado de educaci??n secundaria obligatoria y forma parte del programa del Departamento de Din??mica Educativa del Ayuntamiento de Palma de Mallorca

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Resumen tomado del propio recurso. Contiene un anejo central con las vistas panor??micas desde el castillo donde se han ubicado los top??nimos correspondientes

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Este material pretende poner en contacto a los alumnos con un entorno determinado, la zona de Ternelles y el Castillo del Rey, de origen medieval, para que sean capaces por sí mismos de descubrir la importancia del medio. A partir de los aspectos ambientales en cuanto a naturaleza, historia y cultura, los alumnos pueden tomar conciencia de la necesidad de protección y conservación del patrimonio ambiental y practicar conductas de respeto al entorno.