Ontologia para moelos de negócios de redes sociais na internet: um ensaio teórico-exploratório

Atualmente, uma profusão de soluções chamadas de Web 2.0 e redes sociais está causando um grande impacto no desenvolvimento da Internet, comparando-se à era “ponto-com” em termos de crescimento, investimentos e empolgação. Estas iniciativas possuem em comum um elevado grau de formação de comunidades, e de criação e compartilhamento de conteúdo por parte do usuário, dentre outras características. Acredita-se que as redes sociais possuam um grande potencial inovador e disruptivo tanto para a sociedade quanto para o mundo empresarial. Entretanto, como transformar as redes sociais e aplicações Web 2.0 em modelos de negócios auto-sustentáveis ainda é um desafio para o mercado. Esta dissertação objetiva auxiliar a compreensão e abordagem deste tema propondo uma ontologia específica para modelos de negócios de redes sociais na internet. Isto se realiza por meio do desenvolvimento de um ensaio teórico de viés exploratório, baseado em extensa, porém não exaustiva, revisão de literatura abordando modelos de negócios, redes sociais e demais temas relacionados. A ontologia criada é então aplicada na representação de modelos de negócio de redes sociais na internet. Este trabalho também fornece uma visão geral do fenômeno Web 2.0, abordando algumas de suas principais características tecnológicas e socioeconômicas.

A green revolution in Mozambique: a study about the government possibilities to launch a sustainable green revolution

The present study is focused on the analysis of the political, economical and social factors that may interfere with the possibility of a Green Revolution as a solution for Mozambique to reach self-sufficiency and to reduce poverty. In order to perform such analysis, the study analyzes the consequences of the decolonization process in Mozambique focusing that the independence process in Mozambique did not create non-colonial models for the Agriculture Sector. Later on, the study tries to understand the impact of HIV/AIDS and Malaria on the labor force. By then, it explores the concepts of the Green Revolution and its successful history in India. At the end, it tries to evaluate if a Green Revolution is possible in Africa, especially in Mozambique, first identifying the factors, which characterized the Green Revolution in India, and trying to link those factors with the reality of Mozambique. The report is structured as followed; Chapter 2, ¿The decolonization process and its impacts on the agriculture sector¿. It gives information about the decolonization process, and explores its consequences. Chapter 3, ¿The Impacts of HIV/AIDS and Malaria on the Labor Force¿. It analyzes the impact of those diseases in the labor force. Chapter 4 ¿The Green Revolution and the Agriculture Sector¿, explores the concepts of Green Revolution, its success in India and its history in Mozambique. Chapter 5, finally, centers on conclusions, findings and recommendations.

Sustentabilidade e Desenvolvimento Local: Estudo de Projeto na Formação da Ecovila Viver Simples em Itamonte - MG

Eco-villages are considered models of intentional communities or sustainable communities and have been incorporated by the United Nations in the Sustainable Communities Development Programme (SCDP) as a human scale settlement. They are characterized by human activities being integrated in a non-damaging way into the natural world in such a way as to give support to healthy human development so as to be able to continue indefinitely into the future. This text assesses the extent to which a project to create the Eco-village for Simple Living in Itamonte - Minas Gerais" is successful, based on the concepts of sustainability and local development succeeds, by examining the indicators and attributes that are able to be measured in the planning phase, describing the stages and discussions of the project, as well as assessing the members 'perception of "the concepts of the Eco-village", "sustainability" and "local development". Subsequent analysis of the degree of sustainability (ecological, social, economic, spacial and cultural / spiritual) and local development, based on the social economy, demonstrated the presence of a number of aspects used to support, guide, discuss, plan and implement actions in the creation of the Eco-village being studied. This work could be used as a guide to Eco-villages during the planning phase, indicating the importance of the concepts studied, especially for some communities which are self-proclaimed "Eco-villages" but which in fact do not show even the slightest structural aspects which would describe them as such, like solidarity in the relations between participants, or construction oriented with a view to the precepts of environmental preservation. "

Green logistics: key elements for a well-functioning sustainable logistics system

A growing awareness of the modern society about the direct relationship between a growing global community with increasing total industrial activities on one hand and various environmental problems and a natural limitation of natural resources on the other hand set the base for sustainable or “green” approaches within the supply chain. This paper therefore will look at the issue of “Green Logistics” which seeks to reduce the environmental impact of logistics activities by taking into account functions such as recycling, waste and carbon emission reduction and the use of alternative sources of energy. In order to analyze how these approaches and ideas are being perceived by the system as a whole two models from the area of prospective and scenario planning are being used and described to identify the main drivers and tendencies within the system in order to create feasible hypothesis. Using the URCA/CHIVAS model allows us to identify the driver variables out of a high number of variables that best describe the system “Green Logistics”. Followed by the analysis of the actor’s strategies in the system with the Mactor model it is possible to reduce the complexity of a completely holistic system to a few key drivers that can be analyzed further on. Here the implications of URCA/CHIVAS and Mactor are being used to formulate hypotheses about the perception of Green Logistics and its successful implementation among logistics decision makers by an online survey. This research seeks to demonstrate the usefulness of scenario planning to a highly complex system observing it from all angles and extracting information about the relevant factors of it. The results of this demonstration indicate that there are drivers much beyond the factory walls that need to be considered when implementing successfully a system such as Green Logistics.

Colecionar: do ideal temático às posses que lhe dão tangibilidade e concretude ao estender o eu (self) do colecionador

Este trabalho procura dar uma resposta à seguinte pergunta de pesquisa: quais variáveis influenciam o comportamento colecionar a partir da perspectiva do consumidor? Para tanto, faz uso de métodos complementares: uso de análise de conteúdo e de modelagem de equações estruturais. As seguintes variáveis foram identificadas: ideal temático, envolvimento, desejo, prazer, permanência, ocupação do espaço e exposição, conhecimento e autoridade. O construto ideal temático foi desenvolvido e escalas para medi-lo e às variáveis permanência, ocupação do espaço e exposição, conhecimento, autoridade e colecionar também foram desenvolvidas. Os resultados sugerem que o modelo estrutural de colecionar aqui desenvolvido é consistente, confiável e válido pelos diversos critérios de análise empregados (índices de adequação do modelo; verificação das hipóteses do modelo; coeficientes de determinação; efeitos diretos, indiretos e totais dos caminhos do modelo e análise de modelos alternativos) e que, portanto, representa uma construção cabível do fenômeno colecionar na área de comportamento do consumidor e que o colecionar é uma forma de estender o eu do colecionador, de uma forma diferenciada, especial. Neste estudo esse fato foi ligado à influência do ideal temático no colecionar.

Estimating and forecasting the volatility of Brazilian finance series using arch models (Preliminary Version)

The goal of this paper is to present a comprehensive emprical analysis of the return and conditional variance of four Brazilian …nancial series using models of the ARCH class. Selected models are then compared regarding forecasting accuracy and goodness-of-…t statistics. To help understanding the empirical results, a self-contained theoretical discussion of ARCH models is also presented in such a way that it is useful for the applied researcher. Empirical results show that although all series share ARCH and are leptokurtic relative to the Normal, the return on the US$ has clearly regime switching and no asymmetry for the variance, the return on COCOA has no asymmetry, while the returns on the CBOND and TELEBRAS have clear signs of asymmetry favoring the leverage e¤ect. Regarding forecasting, the best model overall was the EGARCH(1; 1) in its Gaussian version. Regarding goodness-of-…t statistics, the SWARCH model did well, followed closely by the Student-t GARCH(1; 1)

The Panama canal expansion mega project : a case study and stakeholder´s analysis

As globalization increases integration, a new playing field is emerging which is driving the need for operational efficiencies and alignment of complementary capabilities among countries to build sustainable models and integrated offerings. As demands increase, companies are turning to effective project management as means to control operations and countries are increasing the amount of mega projects to boost their competitiveness and global footprint. Given the scale, complexity, political nature, multicultural makeup, and high level of visibility; mega projects rely on successful stakeholder management to effectively manage its operational, tactical, and strategic levels to execute their mission. This paper examines the success drivers of mega projects and presents an in depth stakeholder assessment of the Panama Canal Expansion mega project to identify the perceived value to its stakeholder community. The stakeholder categories include: the Panama Canal Authority, subcontractors executing the expansion project, customers of the canal in Panama and U.S., as well as the communities surrounding the Panama Canal and ports in the U.S. East Coast. The conclusion of this paper captures the relationship between the effective stakeholder engagement from the Panama Canal Authority, the perceived value of the Panamanian stakeholders, and compares it to U.S. based mega projects being executed simultaneously to allow the U.S. East Coast ports to accommodate increased cargo volumes.