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Dinâmica Engenharia Junior
No full textUniversidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia (ICTS), Departamento de Engenharia Ambiental, Sorocaba, SP, BrasilUniversidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia (ICTS), Departamento de Engenharia Ambiental, Sorocaba, SP, Brasi
Application of the dimensional analysis in environmental indicators of areas degraded by cassiterite exploitation
No full textNo contexto do desenvolvimento sustentável há um paradigma crítico, que retrata a relação entre o capital e a degradação ambiental. Conforme aumenta o cunho socioeconômico de determinada atividade, maior é a permissibilidade da sociedade aos seus efeitos ambientais negativos, sobretudo quando são apenas sentidos em nível local. Porém, após um passado de exemplos adversos, a meta por um estado de equilíbrio tem adquiro notoriedade em busca de uma nova perspectiva de desenvolvimento. Quando atividades de grande relevância, como a mineração, resultam em elevado grau de alteração do meio, há expectativa da sociedade quanto à mitigação ou compensação dos seus efeitos negativos, principalmente quando ecossistemas sensíveis são afetados. Porém, a complexidade ambiental dificulta a mensuração da extensão dos danos ambientais, bem como a efetividade de ações de recuperação. Nesse contexto se insere o presente estudo. Buscaram-se métricas e métodos compreensivos para a avaliação de florestas em recuperação em áreas minerarias na Amazônia brasileira. A técnica de modelagem com Análise Dimensional foi empregada de maneira a estabelecer índices adimensionais voltados à avaliação desses ambientes. Variáveis relacionadas ao desenvolvimento florestal, fauna, além das condições físicas, químicas e bioquímicas do solo foram empregadas, utilizando a priori o processo de conhecimento por descoberta em banco de dados em sua seleção. Dois estudos preliminares a Análise Dimensional foram realizados, fornecendo suporte para escolha das variáveis e entendimento da representatividade dos índices adimensionais obtidos. Como resultado uma proposta metodológica foi apresentada, para avaliação da condição fitossociológica de ambientes em recuperação em comparação ao ecossistema de referência. O grau de alteração do solo se mostrou como um dos fatores condicionantes, destacando a importância das ações iniciais de preparo, preliminarmente ao plantio. A análise dimensional se revelou como uma abordagem promissora, possibilitando sintetizar, representar e comparar as condições ambientais dos locais minerados e do ecossistema de referência. Porém, três índices assumiram um papel protagonista, com representação sistêmica do processo de recuperação ambiental, o primeiro expresso pela relação entre duas variáveis bioquímicas do solo, a respiração basal e atividade celulase (Pi2); o segundo (Pi8) obtido através de variáveis biológicas da fauna e da flora; e o terceiro (Pi10), integrando variáveis do solo, da fauna e da flora. Os resultados obtidos permitiram condensar avanços conceituais e metodológicos nesse documento, estruturando uma base para elaboração de propostas de avaliação de ecossistemas alterados e estabelecimentos de padrões de qualidade com base no ecossistema de referência Amazônico.There is a critical paradigm that portrays the sustainable development, the relationship between the capital and the environmental degradation. As the socioeconomic importance of a given activity increases, the greater will be the permissibility of society to its negative impacts, especially when they are only sensed at the local level. However, after several adverse examples in history, the aim for a state of equilibrium has acquired notoriety for a new perspective of development. When an activity of great relevance, as mining, results in high environmental alteration, there is an expectation of mitigation, or compensation, on its negative effects, especially when vulnerable ecosystems were affected. However, the environmental complexity not always allows a full comprehension of environmental damage, as well as the effectiveness of recovery actions in their reversal. This study aimed to search for comprehensive metrics and methods to evaluate of mined forests of Brazilian Amazonia. Dimensional Analysis was employed in establishing dimensionless index related to the environmental quality of the mined forests. Variables of forest development, fauna, and physical, chemical and biochemical conditions of the soil were employed, based on knowledge discovery in databases in its selection. Two preliminary studies to Dimensional Analysis were carried out, supporting the choice of variables and the further understanding about obtained dimensionless index. As a result, a methodological proposal was presented to evaluate the phytosociological conditions of recovering environments compared to the reference ecosystem. The degree of soil alteration was shown as a conditioning factor, highlighting the importance of the initial soil preparing actions, preliminary to revegetation. The dimensional analysis proved to be a promising approach, allowing synthesizing, representing and comparing the environmental conditions of the mined sites with the reference ecosystem. However, three indices played a major role, with systemic representation of the environmental recovery process, the first one expressed by the relationship between soil basal respiration and cellulase activity (Pi2), the second (Pi8), obtained through biological variables of fauna and flora; and the third (Pi10), integrating soil, fauna and flora variables. The obtained results allowed to condense conceptual and methodological advances in this document, structuring a basis for elaborating evaluation proposals for altered ecosystems and to establish quality standards, based on the reference ecosystem.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES
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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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