1,720,963 research outputs found
Mudanças no uso da terra: o caso da bacia do Itajaí/SC a partir de um modelo dinâmico
Get PDFTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em Ciências Humanas
Mudanças no uso da terra
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em Ciências Humanas
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
AVALIAÇÃO DOS ESTÁGIOS SUCESSIONAIS DA VEGETAÇÃO DA ÁREA DE PRESERVAÇÃO PERMANENTE DO RESERVATÓRIO DA UHE CAMPOS NOVOS
No full textA classificação dos estágios sucessionais de regeneração da vegetação é um processo importante para o diagnóstico ambiental de uma área de preservação permanente; a utilização de imagem de satélite para a aquisição dessas informações tem se tornando cada vez mais frequente e útil. O objetivo com este trabalho foi classificar a vegetação existente na área de preservação permanente do reservatório da Usina Hidrelétrica Campos Novos, localizada nos Municípios de Campos Novos, Celso Ramos, Abdon Batista e Anita Garibaldi, no Estado de Santa Catarina. Para a realização deste estudo foram utilizadas imagens do satélite Worldview 2 de alta resolução do ano 2010 e para a classificação da imagem o software SPRING 5.4.1; a metodologia aplicada na análise da imagem foi a classificação supervisionada por regiões com o algoritmo classificador Bhattacharya. O resultado obtido da composição da área, dividido por estágio de regeneração da vegetação é de 70,91% avançada, 18,34% média, 10,52% inicial e 0,23% acessos. Esses resultados servem de parâmetro para uma análise futura, na qual com uma imagem atual será possível avaliar no período de tempo a evolução do desenvolvimento da regeneração da vegetação da área de preservação permanente.Palavras-chave: Área de preservação permanente. Tipologia vegetal. Classificação supervisionada. Imagem de satélite
Arquitetura computacional baseada em computação GRID, aplicada a sistemas de informação geográfica na gestão de risco e alerta da bacia do rio Itajaí
No full textGIS became a very important component to risk and emergency management and every day new applications can be viewed. As new requirements are developed in the risk management and emergence management as well as in the hazard management, they demand new technologies related to its tools including GIS. This ongoing evolution continuous demands higher computing capacities, security and processing as well as redundancy against fails and lot of times require remote web connections. The simple client server models have important problems to achieve those requisites. Thus, it is perceived the necessity of a collaborative dynamic application in the base for the GIS and in this case the middleware model has emerged. In the other hand, GRIDs services represent an extended form of web, therefore, beyond making possible the automatic communication between applications, it also allows that computational resources can be shared and be offered as services of transparent form to the user. The objective of this paper is to propose a computation architecture model, based on distributed high level systems, specifically using grid technologies in order to supply the monitoring and alert system for Itajai basin. There are some preliminary results, restricted to the conceptual field. Until the present moment, the conceptual model has been developed and improved to make front to the institutional demands.Pages: 8865-887
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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