890 research outputs found
Situating Case Studies Within the Design Science Research Paradigm:An Instantiation for Collaborative Networks
Optimizing communication and computation for multi-UAV information gathering applications
Typical mobile agent networks, such as multi-UAV systems, are constrained by limited resources: energy, computing power, memory and communication bandwidth. In particular,
limited energy affects system performance directly, such as system lifetime. Moreover, it has been demonstrated experimentally in the wireless sensor network literature that the total energy consumption is often dominated by the communication cost, i.e. the computational and the sensing energy are small compared to the
communication energy consumption. For this reason, the lifetime of the network can be extended significantly by minimizing the
communication distance as well as the amount of communication data, at the expense of increasing computational cost. In this work, we aim at attaining an optimal trade-off between the communication and the computational energy. Specifically, we propose a mixed-integer optimization formulation for a multihop
hierarchical clustering-based self-organizing UAV network incorporating data aggregation, to obtain an energy-efficient information routing scheme. The proposed framework is tested on two applications, namely target tracking and area mapping. Based on simulation results, our method can significantly save energy compared to a baseline strategy, where there is no data aggregation and clustering scheme
Programa computacional BHCN&CCTK: balanço hídrico climatológico normal e classificação climática de Thornthwaite e Köppen / Computer program BHCN&CCTK: normal climatological water balance and Thornthwaite and Köppen climate classification
Os recursos computacionais contemporâneos têm oferecido possibilidades de programação e avanços nas mais diversas áreas da ciência. No tocante a agrometeorologia, estes artifícios têm melhorado e facilitado à interpretação de inúmeros fenômenos naturais, a apontar, o balanço hídrico e as classificações do clima, que são de extrema importância científica e prática. Porém, até o presente desconhecem-se aplicativos que integre estes dois fenômenos numa única compilação de dados. Assim objetivou-se com este trabalho, apresentar e validar o programa “Balanço Hídrico Climatológico Normal e Classificação Climática de Thornthwaite e Köppen - BHCN&CCTK”; que foi desenvolvido em planilhas eletrônicas do Excel®, escrito em língua portuguesa, têm como dados de entradas, temperatura, precipitação e evapotranspiração de referência, e permite determinar simultaneamente, o balanço hídrico climatológico normal de Thornthwaite, as classificações climáticas de Thornthwaite e Köppen e gerar imagens do comportamento climático da região em estudo. Para validá-lo, usaram-se dados da literatura científica de diversas localidades e climas, de modo que se pode constatar que o ‘BHCN&CCTK’ apresenta balanços hídricos e classificações climáticas coerentes aos resultados literários e metodologias usadas e, que, os recursos gráficos do programa permitem melhor interpretação dos fenômenos climáticos em análise
Utilização do Cadastro Territorial Multifinalitário na gestão de riscos
Use of the multipurpose territorial cadastre on risk management - at first, this work presents a brief bibliographical review about records and risk management. After that, the methodology used on the execution of thematic maps through the Internet showing the characteristics of susceptible buildings to some type of risks is presented. Finally, it demonstrates the potential and viability of using this information on cadastres in this important area, while at the same time using minor financial resources
UMA ANÁLISE CIVIL-CONSTITUCIONAL SOBRE O DANO E AS RELAÇÕES DE FAMÍLIA
Com a nova dinâmica do Direito Privado que surgiu com a promulgação da constituição de 88, surge mudanças no panorama do Direito de Família que serão asseguradas pela responsabilidade civil, em especial o dano moral. O presente artigo tem como objetivo principal fazer uma análise, sob a óptica civil constitucional, das relações de família e da reparação civil extrapatrimonial. Tendo como objetivos específicos: primeiro demonstrar a nova visão civil constitucional sobre os institutos do Direito de Família e da responsabilidade civil; segundo apresentar os novos paradigma das relações de família no Código Civil de 2002 e o aprofundamento do instituto do dano moral e suas diversas aplicações no Direito de Família; terceiro fazer uma análise sobre o dano moral nas relações familiares, em especial sobre: tese do abandono afetivo; reparações de danos em por quebra da fidelidade; responsabilidade civil por quebra de noivado; e reparações em relações de parentalidade. Usando a metodologia bibliográfico e documentada, a partir da leitura de livros, doutrinas, artigos e pesquisas, podemos observar, que se trata de uma temática, cujo seu campo de entendimento é bem vasto, onde é possível observar muitas divergências nos julgados. Concluímos que, se tratando de responsabilidade civil no direito de família, a aplicação do dano moral deve ser analisada de forma complexa, para que a aplicação do direito seja de forma concreta e efetiva, assegurando as garantias e direito das pessoas
Clinical-pathological and sociodemographic factors associated with the distant metastasis and overall survival of oral cavity and oropharynx squamous cell carcinoma
The objective of this study was to evaluate the influence of clinical-pathological and sociodemographic factors on the prevalence of distant metastasis (DM) and overall survival in patients with oral cavity and oropharynx squamous cell carcinoma (OOSCC). Cross-sectional study based on the records of 404 OOSCC patients evaluated for DM, covering the period 2000-2014. We analysed the influence of age, sex, level of schooling, primary tumor subsite, treatment, marital status, family history of cancer, history of smoking and alcohol consumption, type of health care coverage (private vs. public) and overall survival. Findings were submitted to Fisher?s exact test, Pearson?s chi-squared test, Mantel-Cox log-rank testing and multinomial and Cox regression analysis (SPSS v. 20.0; p65 years (p=0.046), indigenous/brown racial type (p=0.045), palliative treatment (p=0.035) and DM (p=0.048). Lymph node metastasis independently increased the prevalence of DM and, along with male sex, older age, brown racial type and palliative treatment, was independently associated with poor prognosis in patients with OOSCC
Physiological and productive performance of papaya plants irrigated in a semiarid environment
Papaya tree has great economic importance and potential of cultivation in semiarid environment. However, water scarcity in this region may inhibits photosynthetic activity and limit the production of this crop, being necessary to use strategies of irrigation management that rationalize water and allow the production of the plants without affecting photosynthetic activity. In this sense, this study aimed to evaluate the physiological and productive performance of papaya “Calimosa” under different water replacement rates in semiarid environment. Papaya plants were irrigated with four water replacement rates (50, 75, 100 and 125% ETo) from 30 days after transplant of seedlings to the experimental area. At 10 months after transplant were realized evaluations of gas exchange and chlorophyll fluorescence, and at 12 months after transplant, it was started harvesting fruits to determine the yield. Water replacement rates significantly influenced the parameters of gas exchange of papaya with better results on rates of 125% ETo. However, application of water replacement rates of 100% ETo provide conditions adequate for the activity of gas exchange and better quantum efficiency of photosystem II, that contribute to fruit production in papaya. With rates less than 75% ETo occur drastic reductions in gas exchange, quantum efficiency of photosystem II, and fruit production of papaya, which impairs its cultivation in semiarid environments
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