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Modelagem numérica para análise térmica em painéis de vedação
Full text linkMonografiaOne of the challenges of civil construction is to provide a comfortable environmental, safe and nice aesthetically to user, that being capable of satisfying the necessity of the same. And connected to this, it is the different studies in search of methods and materials that favor the better comfort in the buildings. To build, the Engineer should to attend the different legal parameters and connected parameters to quality and to well-being of the user, attached to this, it is the thermal comfort, that can be defined as being a mental condition that express to satisfaction with the environmental that the close. Being thermal comfort means that the individual in conditions of normal clothes does not feel neither cold nor heat. Thus, this study has as objective to evaluate the thermal behavior of different panels of seal applied in civil construction work, through of numerical modeling using the software ABAQUS/CAE. For analyzing, it were choose 3 types of seal panels, being the panel in massive concrete of thickness of 10 cm, panel in conventional masonry of bricks 8 holes with thickness of 14 cm and for last was analyzed the panel of seal in apparent solid bricks with total thickness of wall in 14 cm. Thus, the results obtained describe as the heat flow go through the panel in analyze. Being thus, it haves that the panel in conventional masonry of bricks of 8 holes was the model that kept more distant of the limit value of thermal transmittance, where the calculated value corresponds to 57,68% of the limit of standard, this it occurred due to empty in the interior of the masonry (the holes) where the same are filled with air, of this form enables a less passage of heat. Altogether, it concludes that three models analyzed in this study attended the parameters of acceptance of NBR 15220-3:2005, where to calculate the thermal transmittance of each panel, it obtain that all are below of maximum limit of acceptance of the values. And that the panel of massive concrete of the class C25 it is next of the parameter that limits the use; however, still attend the strategy of the bioclimatic zoning 8, to which the city of Caraúbas is characterized.Um dos desafios da construção civil é proporcionar um ambiente confortável, seguro e esteticamente agradável ao usuário, que seja capaz de satisfazer as necessidades do mesmo. E ligado a isso estão os diferentes estudos em busca de métodos e materiais que favoreça o melhor conforto nas edificações. Ao construir, o engenheiro deve atender a diferentes parâmetros legais e parâmetros ligados a qualidade e ao bem-estar dos usuários, atrelado a isso está o conforto térmico, que pode ser definido como sendo uma condição mental que expressa a satisfação com o ambiente que o cerca. Ter conforto térmico significa que o indivíduo em condições de roupas normais não se sente nem com frio nem com calor. Dessa forma, este trabalho tem como objetivo analisar o comportamento térmico de diferentes painéis de vedação aplicados em obras de construção civil, através de modelagem numérica utilizando o software ABAQUS/CAE. Para análise, foram escolhidos 3 tipos de painéis de vedação, sendo o painel em concreto maciço de espessura de 10 cm, painel em alvenaria convencional de tijolos de 8 furos com espessura de 14 cm e por último foi analisado o painel de vedação em tijolos maciços aparente com espessura total da parede em 14 cm. Com isso, os resultados obtidos descreveram como o fluxo de calor percorre os painéis em análise. Sendo assim, tem-se que o painel em alvenaria convencional de tijolos de 8 furos foi o modelo que se manteve mais distante do valor limite de transmitância térmica, onde a diferença do valor calculado corresponde a 57,68% do limite da norma, isso se deu devido os vazios no interior da alvenaria (os furos) onde os mesmos estão preenchidos com ar, dessa forma possibilita uma menor passagem de calor. De modo geral, conclui-se que os três modelos analisados nesse trabalho atenderam os parâmetros de aceitação da NBR 15220-3:2005, no qual ao calcular a transmitância térmica de cada painel, obteve-se que todos estão a baixo do limite máximo de aceitação dos valores. E que o painel de concreto maciço da classe C25 está próximo do parâmetro que limita o uso, porém ainda atende a estratégia do zoneamento bioclimático da zona 8, no qual a cidade de Caraúbas/RN está caracterizada.Trabalho não financiado por agência de fomento, ou autofinanciad
Orçamento: uma ferramenta de gestão na construção civil
Full text linkOrçamento é uma ferramenta de gerenciamento financeiro e estratégico, que ao ser aplicado nas empresas de construção civil possibilita a determinação de fatores organizacionais tornando-as cada vez mais forte no mercado. O referido trabalho tem como principal objetivo, analisar a utilização do orçamento aplicado na obra de construção da vila acadêmica da UFERSA câmpus Caraúbas/RN, observando quais foram os métodos abordados e se sua utilização é tomada como ferramenta de gestão. A metodologia é constituída de duas fases, a primeira está ligada a coletas de dados através de um questionário aplicado ao engenheiro da UFERSA e a segunda à uma análise dos dados colhidos. Dessa forma, ao analisar e comparar os dados colhidos, observa-se que na obra de construção da residência algumas fases preestabelecidas nas etapas iniciais não são cumpridas no tempo estimado, devido a problemas com repasses financeiros por parte do Governo Federal, e ainda a utilização do orçamento torna-se mais financeira do que como ferramenta de gerenciamento estratégico. Conclui-se então, que ao elaborar o orçamento de forma correta, a sua aplicação colabora para o cumprimento das etapas previstas, e ainda contribui para a redução de possíveis processos de aditamentos dos contratos financeiros.Budget is a financial and strategic management tool, which when applied to construction companies enables the determination of organizational factors making them increasingly strong market. This work aims to analyze the use of the budget applied to the work of building the academic village UFERSA campus Caraubas / RN, noting which were covered methods and their use is taken as a management tool. The methodology consists of two stages, the first is linked to data collected via a questionnaire to the engineer and the second UFERSA the analysis of the collected data. Thus, to analyze and compare the data collected, it is observed that the work of home building some predetermined stages in the early stages are not met in the estimated time due to problems with financial transfers from the federal government, and that the use the budget becomes more financial than as a strategic management tool. It follows then, that when drawing up the budget correctly, its application contributes to the fulfillment of the steps provided, and also contributes to the reduction of possible processes of additions of financial contracts.51 f
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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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