946 resultados para social ecological models


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Includes bibliography

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Foraging behavior in social wasps is important in the development of the colony and reflects an important ecological interaction between the colony and the environment. Although the social traits of the colony play a role in the foraging activities, the conditions that establish the space and time limits are mainly physical. Here, we evaluate colonies of Polybia paulista throughout one year in order to verify the foraging activities and the items collected, as well as the importance of temperature, relative humidity, and solar radiation on motivating foraging. Collection of liquids was always higher than that of solids; preys were collected all year long, and nests showed two annual episodic expansions. The linear mixed effects (LME) model used to analyze which weather factors influence the foraging showed temperature as the most influencing factor on the collection of materials. © 2011 Naila Cristina de Souza Canevazzi and Fernando Barbosa Noll.

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Includes bibliography

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How many dimensions (trait-axes) are required to predict whether two species interact? This unanswered question originated with the idea of ecological niches, and yet bears relevance today for understanding what determines network structure. Here, we analyse a set of 200 ecological networks, including food webs, antagonistic and mutualistic networks, and find that the number of dimensions needed to completely explain all interactions is small (< 10), with model selection favouring less than five. Using 18 high-quality webs including several species traits, we identify which traits contribute the most to explaining network structure. We show that accounting for a few traits dramatically improves our understanding of the structure of ecological networks. Matching traits for resources and consumers, for example, fruit size and bill gape, are the most successful combinations. These results link ecologically important species attributes to large-scale community structure. © 2013 Blackwell Publishing Ltd/CNRS.

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Includes bibliography

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Pós-graduação em Odontologia Preventiva e Social - FOA

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This document analyzes the State’s role in social matters, in terms of social insurance and protection, social promotion and investment, and its distributive and redistributive role. It also describes changes and major trends in the region’s social investment and protection between the beginning of the twentieth century and the 1980s and outlines what is being termed “the reform of social reforms” in the twenty-first century, in the light of the challenges of the region’s social development. Three recent models of universalism are presented, as well as the debates on their potential and limitations. The paper concludes with a summary of the universalist social protection project emerging in the region.

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The present report assesses the economic and social impacts of climate change on the energy sector in Antigua and Barbuda, the Bahamas, Barbados, Belize, Cuba, Dominica, the Dominican Republic, Haiti, Grenada, Guyana, Jamaica, Saint Kitts and Nevis, Saint Vincent and the Grenadines, Saint Lucia, Suriname, and Trinidad and Tobago. In the study, the Artificial Neural Network methodology was employed to model the relationship between climate change and energy demand. The viability of the actions proposed were assessed using cost benefit analyses based on models from the National Renewable Energy Laboratory (NREL) of the United States of America.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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This book reflects on the public policies, programmes and regulatory frameworks that are taking a rights-based approach to expanding social protection coverage and benefits in Latin America, with a view to achieving universal coverage. The book’s discussion of the policy tools and programmes pursued in the region aims to provide the reader with technical and programmatic insights for assembling and coordinating public policies within consistent and sustainable social protection systems. The combination of normative orientations and stock of technical knowledge, together with advances regarding the rights-based approach to social protection within a life cycle framework, afford the reader not only a tool box of specific social protection instruments, but also an in-depth examination of related political economy aspects.

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Pós-graduação em Ciência Florestal - FCA

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Analisa a diversidade de formas dos sistemas de comunicação em Zamora - no Equador, os relacionamentos da instituição, participação social e mídias sociais a partir da produção e emissão radiofônica, televisão, comunicação impressa (escrita) e a presença das novas tecnologias na comunicação, tentando achar espaços dos quais seja possível desenvolver práticas alternativas e democráticas para contribuir com o desenvolvimento social. Examina as práticas de comunicação radiofônica, sendo um dos meios principais e com maior tradição na área. Estuda o rádio, particularmente local, analisando seus modelos e programações, observando em cada um deles suas características, objetivos e estratégias assumidas desde sua visão comercial ou ideológica, seu nível profissional e inovação técnica, prestando atenção e nomeando valor à posição critica dos ouvintes, para interpretar as tendências atuais e futuras que se apresentam para eles.Finalmente, chegou-se à comunicação no contexto, examinando os usos e formas, como também a influencia positiva ou negativa na formação da identidade, harmonia com o ambiente, valores e conhecimento em perspectiva de melhorar a qualidade da vida da população. A investigação apóia-se no conhecimento cientifico, pois aplica a técnica qualitativa: Diversidade de grupos focais, entrevistas, observação e uso de investigação bibliográfica.O trabalho considera a historia, a dinâmica própria e a estima que tem os Zamoranos da percepção de sua identificação no contexto de códigos, idiomas e bens, postura desde a qual eles estabelecem normas que devem ser usadas para o seu uso, enquanto permitem articular pontos de vista, analise e conceitos, examinar a teoria para entender o papel que melhor desempenham as mídias sociais e sua importância na sociedade.

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In experimental psychopathology, construct validity is usually enhanced by addressing theories from other fields in its nomological network. In the field of anxiety research, this construct is related to antipredator behavior, conserved across phylogeny in its functions and neural basis, but not necessarily on its topography. Even though the relations between behavioral models of anxiety and statements from behavioral ecology and evolutionary biology are commonly made in anxiety research, these are rarely tested, at least explicitly. However, in order to increase construct validity in experimental anxiety, testing predictions from those theories is highly desirable. This article discusses these questions, suggesting a few ways in which behavioral ecological and evolutionary hypotheses of anxiety-like behavior may be tested.