Avaliação das condições de contorno da teoria de Hertz, comparando os resultados analíticos e numéricos a partir de simulações em software de elementos finitos

The objective of this study was to present the comparison between analytical and numerical results trying to identify the differences and behaviors of the variation of the principal stresses and the maximum contact pressure for different model configurations. The analytical equations of the theory of Hertz from the boundary conditions adopted by him were differences are shown. A step-by-step of developing the model indicating the geometric dimensions, surface contact, type of contact, the formulation used by the software, type of mesh, as well as the boundary conditions and load was presented. In the results, the stresses calculated analytically and compared with the stresses obtained by the finite element simulation software indicating the changes have been made

Teoria do ciclo político-econômicos: um estudo de São Paulo e Minas Gerais

A Teoria dos Ciclos Político-Econômicos relata que os políticos influenciam o comportamento da economia por meio de manipulações das variáveis econômicas e de instrumentos políticos, visando à maximização de votos, por saberem que a situação econômica incide sobre as decisões eleitorais. Neste contexto, este trabalho tem como objetivo principal analisar se existem evidências de ciclos políticos no Brasil, no período de 2002 a 2010. Para isso, procederam-se análises gráficas da evolução do saldo orçamentário dos estados de São Paulo e de Minas Gerais desta época. Os resultados apontaram que em alguns períodos estes ciclos ainda estão presentes, embora eles tendam a desaparecer devido à implantação da Lei de Responsabilidade Fiscal de 2000, a qual objetiva um maior controle das contas públicas

Economia do terrorismo: análise de sua teoria e consequências

Neste trabalho propõe- se o debate de teorias econômicas sobre o terrorismo. Objetiva-se debater as diferentes abordagens da literatura bem como demonstrar suas influências e consequências na economia de um país. Mostram-se ainda dados e trabalhos empíricos dos efeitos do terrorismo na economia americana, espanhola e israelense

Aplicação da teoria das restrições na manufatura de uma empresa siderúrgica

The competition among companies nowadays, caused by globalization and with customers more and more demanding, makes the companies rethink their strategies for survival. To improve their competition the companies are adopting management tool to improve the manufacturing management, which is considered a key to success. The present study aimed to develop a method, based on techniques of theory of constraints and operational research, to ensure the best use of resources and best decision of a production line on a steel company, with focus in the customers’ delivery time, which is a requirement of the current market. The conclusion of this study is that the correct use of the management tools, such as theory of constraints and operational research, can ensure a long survival for the companies that duel for the market share, especially in regard to customers’ delivery time, that generates their satisfaction

Utilização do protocolo anycast em ambientes virtuais distribuídos visando à escalabilidade do sistema

Distributed Virtual Environments (DVE) allow multiple users interact with a virtual world by sharing, manipulating objects. Each user has his/her own vision of this world and every changes of state of the environment are distributed among other users. Due to technological constraints, most systems for distributed virtual environments support a limited number of users. The major limitation for development of DVE scale are imposed by the communication system. As the number of users grows, the amount of bandwidth required to exchange information in real time among stations to upgrade the environment and keep it in a consistent state for all connected users. Based on this situation is proposed a framework that uses the protocol anycast in the application layer that provides a load balancing among servers in the region and aims at reducing the latency of message delivery between participants selecting the DVE server best suited for the region participant to connect to the environment

Aplicando Métodos de Mineração Visual de Texto em conteúdo de Fórum de Discussão

We are included in a society where the use of the Internet became very important to our everyday life. The relationships nowadays usually happen through technological devices instead of face to face contact, for instance, Internet forums where people can discuss online. However, the global analysis is a big challenge, due to the large amount of data. This work investigates the use of visual representations to support an exploratory analysis of contents in messages from discussions forums. This analysis considers the thematic and the chronology. The target forums refer to the educational area and the analysis happens manually, i.e. by direct reading message-by-message. The proprieties of perception and cognition of the human visual system allow a person the capacity to conduct high-level tasks in information extraction from a graphical or visual representation of data. Therefore, this work was based on Visual Analytics, an area that aims create techniques that amplify these human abilities. For that reason we used software that creates a visualization of data from a forum. This software allows a forum content analysis. But, during the work, we identified the necessity to create a new tool to clean the data, because the data had a lot of unnecessary information. After cleaning the data we created a new visualization and held an analysis seeking a new knowledge. In the end we compared the new visualization with the manual analysis that had been made. Analyzing the results, it was evident the potential of visualization use, it provides a better correlation between the information, enabling the acquisition of new knowledge that was not identified in the initial analysis, providing a better use of the forum content

A aplicação da teoria do lean seis sigma na prestação de serviços no setor agrícola

This thesis aims to analyze the applicability of Lean Six Sigma and DMAIC to improve processes focused on agriculture. We discuss the origins of each system separately, Lean Manufacturing, the Toyota plants in Japan, and Six Sigma, by Motorola in the U.S., and then appears to merge them and can meet their complementarities and synergy between their tools. Finally, we describe a case study focused on the harvesting department, applicable to all types of manuals crops, covering the production of fruits, vegetables and greens. This study shows the ability to reduce costs, increase productivity and elimination of defects that the methodology developed with the fusion of Lean Manufacturing with Six Sigma allows

Teoria do desenho de mecanismos: aplicações na teoria dos conflitos internacionais

O presente trabalho busca apresentar os conceitos principais referentes à Teoria do Desenho de Mecanismos e sua aplicação à Teoria dos Conflitos Internacionais, e como sua utilização pode solucionar alguns problemas referentes à metodologia mais utilizada na análise dos conflitos, baseada na Teoria dos Jogos tradicional. Através de uma análise game-free, estabelecem condições gerais para a resolução de conflitos entre países, sem a necessidade de estabelecer formas de jogo específicas. Desse modo, determinam-se resultados para qualquer equilíbrio de qualquer forma de jogo que envolva países em disputa. O trabalho segue apresentando a relação causal entre incerteza e incentivos para revelar de maneira desonesta informações privadas como causas fundamentais de guerra. Analisam-se separadamente as condições que levam à guerra em dois tipos de incerteza, constantemente discutidas na literatura de conflitos internacionais: incerteza em relação ao custo de guerra e em relação à força relativa. Os resultados são apresentados com a devida formulação matemática

Arquitetura Orientada a Serviços baseada na Tecnologia Jini: um caso de teste em Computação Ubíqua

T he people’s daily lives are surrounded by computing devices, with increasing resources (sensors) and, with increasing processing. How these devices communicate is still not natural and This retards the growth of Ubiquitous Computing. This paper presents a way in which these devices can communicate using Jini technology and concepts of Service Oriented Architecture, applying these concepts in a test case of Ubiquitous Computing. To conduct the test case was constructed a fictitious system for management of a soccer championship, where users can interact with each other and with the system in a simplified way, have access to data in real time of the championship during the event. This communication is performed by services built using Jini technology, which were based on key SOA concepts, such as modularity and reusability

Explorando abordagens de aprendizado sequencial para floresta de caminhos ótimos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Explorando abordagens de múltiplos rótulos por floresta de caminhos ótimos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Passos para a elaboração de um curso de EAP para pós-graduandos em Ciência da Computação

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Ações de Semigrupos em Fibrados

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A nova teoria da antropologia da civilização: tradução para a língua inglesa de neologismos terminológicos criados por Darcy Ribeiro nas obras o processo civilizatório e o povo brasileiro

This study analyzes the translation process into English of neologisms and expressions in the works written by the anthropologist Darcy Ribeiro and in their respective translations, made by Betty J. Meggers and Gregory Rabassa. Our research project draws on Corpus-Based Translation Studies (BAKER, 1995, 1996, 2000; CAMARGO, 2007), Corpus Linguistics (BERBER SARDINHA, 2004) and on some concepts of Terminology (ALVES, 1999; BARROS, 2004; BOULANGER, 1989; CABRÉ, 1993, 1999). Results show that terms do not present similarities within the language related to Brazilian Anthropology, being necessary for the author to look up alternative terminology and to create new concepts that can be used by other anthropologists. The translation of words and expressions developed by the author reflects lexical variation due to the options chosen by the respective translators for the target language. These tendencies may be found in Ribeiro’s translated texts, indicating the difficulty to conceptualize the anthropological Brazilian universe in English.