Filtros otimizados para transformadas seno, co-seno e de Hankel j0, j1 e j2

Apresentamos dois algoritmos automáticos, os quais se utilizam do método dos mínimos quadrados de Wiener-Hopf, para o cálculo de filtros lineares digitais para as transformadas seno, co-seno e de Hankel J₀, J₁ e J₂. O primeiro, que otimiza os parâmetros: incremento das abscissas, abscissa inicial e o fator de deslocamento utilizados para os cálculos dos coeficientes dos filtros lineares digitais que são aferidos através de transformadas co-seno, seno e o segundo, que otimiza os parâmetros: incremento das abscissas e abscissa inicial utilizados para os cálculos dos coeficientes dos filtros lineares digitais que são aferidos através de transformadas de Hankel J₀, J₁ e J₂. Esses algoritmos levaram às propostas de novos filtros lineares digitais de 19, 30 e 40 pontos para as transformadas co-seno e seno e de novos filtros otimizados de 37 , 27 e 19 pontos para as transformadas J₀, J₁ e J₂, respectivamente. O desempenho dos novos filtros em relação aos filtros existentes na literatura geofísica é avaliado usando-se um modelo geofísico constituído por dois semi-espaços. Como fonte usou-se uma linha infinita de corrente entre os semi-espaços originando, desta forma, transformadas co-seno e seno. Verificou-se melhores desempenhos na maioria das simulações usando o novo filtro co-seno de 19 pontos em relação às simulações usando o filtro co-seno de 19 pontos existente na literatura. Verificou-se também a equivalência de desempenhos nas simulações usando o novo filtro seno de 19 pontos em relação às simulações usando o filtro seno de 20 pontos existente na literatura. Adicionalmente usou-se também como fonte um dipolo magnético vertical entre os semi-espaços originando desta forma, transformadas J₀ e J₁, verificando-se melhores desempenhos na maioria das simulações usando o novo filtro J₁ de 27 pontos em relação ao filtro J₁ de 47 pontos existente na literatura. Verificou-se também a equivalência de desempenhos na maioria das simulações usando o novo filtro J₀ de 37 pontos em relação ao filtro J₀ de 61 pontos existente na literatura. Usou-se também como fonte um dipolo magnético horizontal entre os semi-espaços, verificando-se um desempenho análogo ao que foi descrito anteriormente dos novos filtros de 37 e 27 pontos para as respectivas transformadas J₀ e J₁ em relação aos filtros de 61 e 47 pontos existentes na literatura, destas respectivas transformadas. Finalmente verificou-se a equivalência de desempenhos entre os novos filtros J₀ de 37 pontos e J₁ de 27 pontos em relação aos filtros de 61 e 47 pontos existentes na literatura destas transformadas, respectivamente, quando aplicados em modelos de sondagens elétricas verticais (Wenner e Schlumberger). A maioria dos nossos filtros contêm poucos coeficientes quando comparados àqueles geralmente usados na geofísica. Este aspecto é muito importante porque transformadas utilizando filtros lineares digitais são usadas maciçamente em problemas numéricos geofísicos.

Segregação espaço-temporal das assembléias de peixes em ambientes de entremaré não vegetado e canal subtidal de um estuário de macromaré no norte do Brasil

Os diversos ambientes estuarinos estão hidrologicamente e ecologicamente conectados e fornecem funções vitais para muitos organismos aquáticos. Segregações espaciais e temporais foram observadas na estrutura das assembléias de peixes (biomassa média) nos ambientes de canal subtidal e de entremaré não vegetado do estuário do rio Marapanim, Norte do Brasil. Amostragens mensais de peixes foram conduzidas de agosto de 2006 a julho de 2007 nos ambientes de canal subtidal e de entremaré não vegetado usando arrasto de fundo e puçá de arrasto, respectivamente. Um total de 41.496 indivíduos pertencentes a 29 famílias e 76 espécies foi coletado. A riqueza das espécies apresentada no ambiente subtidal (71 espécies) foi superior ao observado de entremaré não vegetado (51 espécies). Diferentes associações na composição das espécies e guildas funcionais foram observadas entre os ambientes de canal subtidal e de entremaré não vegetado, através da Análise de Correspondência Destendenciada. Diferenças significativas na composição das assembléias de peixes foram encontradas entre os ambientes, períodos e zonas através da análise de similaridade (ANOSIM). Foi verificado que os sedimentos finos (silte-argila), areia e salinidade foram os fatores mais importantes estruturando as assembléias de peixes. Em síntese, esses resultados podem estar associados à tolerância a fatores ambientais e aos diferentes tipos de alimentação.

Efeito do processo de obtenção do catchup sobre seus compostos antioxidantes, capacidade seqüestrante do radical DPPH e cor

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Funções de Wannier generalizadas para aplicações em Ciência dos Materiais

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Classificador Fisherface Fuzzy para o reconhecimento de faces

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Critérios de qualidade em artigos e periódicos científicos: da mídia impressa à eletrônica

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

Estudos de Análise de Cocitação de Autores: uma abordagem teórico-metodológica para a compreensão de um domínio

This piece of research aims at analyzing the absolute and relative co-citation indicators, especially Salton’s Cosine and comparing the contribution of these indicators to the understanding of a domain, applying them to the universe of "Metric Studies" at the BRAPCI base. It also aims at presenting the co-citation network generated from the absolute frequencies and highlighting the groupings of co-cited authors, depending on the relative values, integrating and explaining the information from the two indexes. The domain analysis, by means of its 11 approaches, including “Bibliometric Studies”, focuses on the science characterization and evaluation, in that it allows us to identify and to analyze the conditions under which the scientific knowledge is constructed and socialized. In these studies, the contribution of citation and co-citation analysis is highlighted. Of the total of 147 articles retrieved at BRAPCI base, the authors cited in at least 11 articles, in a total of 38 researchers, were selected. The 38 x 38 symmetric matrix with the absolute frequencies of co-citation and the matrix with the relative values of Salton’s Cosine were generated. The co-citation network with absolute frequency values were constructed, through Ucinet software. Cluster analysis of data with relative values wer performed, using the SPSS software. Significant differences between the absolute and relative indexes, with some high absolute values of co-citation were observed; when considered in relation to the presence of each author, their significance is decreased. As to the generated network, seven groups were determined, in which only one is established for close themes and comes from co-citations in the original sense of the term. Five groups present closeness in absolute and relative indicators. It can be concluded about the importance of the studies of authors' co-citation analysis, which associate the two indexes, absolute and relative, in order to visualize and understand the underlying structures of a scientific domain.

Políticas de Segurança no Brasil: Desafios Diante das Novas Agendas

In the last two decades, the trend in security policies in Brazil shows the shift path on public policies, that allows us to see changes from state building policies to the growing presence of others public branches and civil society. From state and bureaucratic based functions, security tends to see more as problem of management and public agenda setting, mainly, with growing participation on state and local levels. Nevertheless the challenges remain in terms of changes in the whole picture of security in the country. The article explores some of them, without the desire of comprehensiveness.

Análise de cocitação de autores: um estudo teórico-metodológico dos indicadores de proximidade, aplicados ao GT7 da ANCIB

Of a theoretical-methodological nature, this research aims at analyzing the absolute and relative proximity indicators – Salton’s cosine and Jaccard’s index –, for authors’ co-citation analysis (ACA). It also aims at comparing the contribution of these three indicators to the understanding of a domain. Methodologically, it deepens the theoretical studies that motivate authors’ co-citation analysis (ACA) and the proximity indicators, and presents the studies of the normalized index of Salton’ cosine (SC) and Jaccard’s index (JI). It applies ACA to the GT7 of ANCIB, in the Information Science field, from 2007 to 2011.

Dinâmica da vitelogênese durante a maturação ovariana em Artemesia longinaris

Pós-graduação em Aquicultura - FCAV

Oxidação de lisozima por haloaminas: caracterização química e efeitos biológicos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Transição para um novo centro de distribuição logístico em uma indústria de confecção

In a highly competitive environment for manufacturers and retailers in the garment sector, flexible solutions for warehousing, distribution and exhibition of products directly influence the cost and responsiveness to market demands. This work refers to a Textile/Clothing, which undergoes a process of restructuring and growth, where we evaluated the need for professionalism in all its processes, so that the high demands were met in a sales perennial. Thus, this study aims to identify and analyze possible improvements in the process of transition from a logistics/manufacturing force in a Textile/Clothing in existence since 1998, located in São Paulo, a framework for a new logistics Center Distribution Logistics. The theoretical basis of the research literature addresses as Distribution Center and its basic functions, layout and performance indicators. As result it was mapped the current logistics processes, contributing directly to the development of the layout of the new Distribution Center. Have also been established KPI,s ( Key Performance Indicator) and Logistics Performance Indicators showing the actual process performance, helping professionals in make decisions

Síndromes paraneoplásicas hematológicas em cães

Tumoral masses can cause several direct problems in the organism, such as invading organs and altering their functions, leading to other problems such as the Paraneoplastic syndrome. The paraneoplastic syndrome is an alteration in the structure and function of the body due to the non-invasive actions of the tumor, for example, liberating hormones, peptides, cytokines and leading to cross reactions between normal tissues. The syndrome can affect different locations in the body, being that some are indicative of specific tumors, however the interpretation of the clinical and pathological findings referring to this syndrome should be utilized in the diagnostic and treatment. In the hematological paraneoplastic syndrome, there are alterations that occur due to indirect actions of the tumor on the blood cellular elements and the coagulation system, and that are generally detected in routine clinical and laboratorial exams. This study objective is to aboard some hematological paraneoplastic syndromes in dogs such as: anemia, thrombocytopenia, neutrophilic leukocytosis, hypergammaglobulinemia and erythrocytosis, emphasizing the different etiologies that may assist in differential diagnosis and the principal neoplasm related to this syndrome. Besides this, the early discovery and treatment of the paraneoplatic syndrome is important as the tumor itself, as it improves the prognostic and quality of life of the patient

Equilíbrio, funções executivas e quedas de idosos com demência de Alzheimer: um estudo longitudinal

Falls among older people is a major clinical problem due to its high incidence, with consequent implications for the health and care costs. Elderly patients with dementia of Alzheimer type (AD) are more susceptible to falls due to the impairment of executive functions and gait, with the risk of falls 3 times higher than non-demented elderly. This study used a longitudinal design and aimed to analyze the effects of a regular and systematized physical activity program on the frequency of falls in patients with AD. Additionally, we aimed to correlate the frequency of falls with the executive functions and equilibrium, after and before the physical activity program. The study included 21 patients with clinical diagnosis of AD, divided into two groups: control group (CG), composed of 11 subjects not engaged in any systematized physical activity and training group (TG): 10 seniors who participated in the Cinesioterapia Functional and Cognitive in Elderly with Alzheimer's disease program (PRO-CDA). The physical activity program lasted four months, with weekly frequency of three times, with each session lasting 60 minutes. Were administered the Mini-Mental State Examination (MMSE) to assess cognitive functioning and global score of the Clinical Dementia Rating (CDR) to classify the severity of dementia. For the evaluation of executive functions were used the Clock Drawing Test (TDR) and Frontal Assessment Battery (FAB). In addition, we used the Functional Balance Scale, Berg test (EEFB) and Timed Up-and-Go (TUG) to assess the equilibrium and risk of falls. Falls were recorded by means of a questionnaire, which included the number of falls in the last four months. Analyzing the results, it was observed that TG obtained significant improvements in equilibrium and in executive functions, highlighting the beneficial effects of physical activity in these variables... (Complete abstract click electronic access below)

Efeitos do Square Stepping Exercise nas capacidades funcionais e funções executivas em frequentadores do Centro do Idoso de Rio Claro - SP

With aging process, there is a natural biological decline that eventually may lead to a functional and cognitive decrease. It is important that older people preserve these functions so they can live an independent life. Some declines in old people who attend Geriatric Day-Care tend to be more severe and recurrent. The Square Stepping Exercise (SSE) is a program created by Shigematsu & Okura (2006), in order to improve the balance of its practitioners, thereby decreasing the risk of falls. It is also believed that the SSE stimulates cognition, and thus, executive functions. The present study, with a longitudinal design, evaluated the effects of SSE in balance performance and executive functions of elderly from the “Centro-Dia do Idoso Padre Casagrande” from Rio Claro – SP. A group of 15 people (GT, n = 15), which performed a four month SSE intervention, and a control group (GC; n = 17) answered the following evaluations.: Questionnaire Registration Data and Anamnesis, Questionnaire Baeck Modified for Elderly, Mini-Mental State Examination, Modified Card Sorting Test, Geriatric Depressive Scale, Questionnaire Pfeffer for Instrumental Activities, Berg Balance Scale and Time Up and Go Test. Although significant improvements have not been observed in GT, the results showed a decline in instrumental activities performance in GC, as well as maintenance in executive functions and balance, and also an improvement in depressive symptoms in GT. This way, Square Stepping Exercise can be considered an activity that helps maintaining functional capacity, among them balance, and executive function in elderly people.