1,721,028 research outputs found
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
Pisos táteis: proposta de diretrizes para a acessibilidade nas calçadas urbanas de Florianópolis
Get PDFDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Civil.A autora disponibilizou na biblioteca digital apenas o capítulo 1A sociedade faz parte do contexto de cada indivíduo como forma de integrá-lo à comunidade. Sendo assim, esta pesquisa aborda um tema que busca integrar todos os cidadãos da cidade num espaço chamado calçada. A Lei 10.098/2000, que estabelece normas gerais e critérios básicos para a promoção da acessibilidade das pessoas com deficiência ou com mobilidade reduzida, regulamenta a supressão das barreiras arquitetônicas das vias e espaços públicos, obstáculos, edificações, comunicação e transporte. Sendo decretada em 2004 (Decreto 5.294/2004), a lei orienta a adaptação dos espaços públicos diante da NBR 9050 (Norma Técnica de Acessibilidade a edificações, mobiliário, espaços e equipamentos urbanos). A acessibilidade é considerada o básico de todos os fatores que visam à inclusão social das pessoas com deficiência. Nesta pesquisa a acessibilidade está voltada para as calçadas, pois estes são espaços públicos abertos, onde cada indivíduo pode dizer-se livre e com direito de fazer suas escolhas. As calçadas, hoje, recebem um novo produto que viabiliza o sistema de mobilidade das pessoas com deficiência visual e demais indivíduos: os PISOS TÁTEIS. Este sistema visa a sinalizar o percurso, chamando a atenção para as barreiras e obstáculos inoportunos, bem como orientando o usuário a chegar a algum destino. Os pisos táteis nasceram na década de 60, a fim de minimizar os acidentes ocorridos nas estações de trens e metrôs do Japão. Os pisos táteis fazem parte da normatização brasileira desde 2004, e várias cidades ainda estão buscando melhoramentos nas suas calçadas de acordo com a NBR 9050/2004. Contudo, esta pesquisa busca tanto o entendimento deste sistema de mobilidade como também o reconhecimento da Ilha de Santa Catarina, a qual teve a primeira aplicação dos pisos táteis em 1998. Para alguns, como centro de planejamento urbano da cidade, a Ilha foi pioneira no Brasil em implantar a acessibilidade nas calçadas urbanas. Porém, a realidade que segue nos dias atuais acaba não demonstrando sucesso na iniciativa. Para proceder esta pesquisa foi elaborada uma metodologia que utilizou três abordagens para contemplar e validar os estudos. Esta metodologia foi desenvolvida em etapas distintas iniciando pelas tabelas de diagnósticos das calçadas, que buscam reconhecer o local e os problemas que Florianópolis tem, correlacionando-os com a normatização existente. Em seguida, o passeio acompanhado das pessoas com deficiência e mobilidade reduzida, a fim de vivenciar suas dificuldades em se locomover nas calçadas e por fim o grupo de foco, o qual busca soluções para as calçadas de Florianópolis. Após este estudo, seguem as diretrizes para a acessibilidade nas calçadas de Florianópolis, considerando suas características de infraestrutura e atribuindo os princípios do desenho universal
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
3D interaction domains for unreinforced masonry panels subjected to eccentric compression and shear
No full textFlexural strength of unreinforced masonry (URM) cross-sections is typically predicted by means of two-dimensional (2D) interaction domains. Alternatively, three-dimensional (3D) interaction domains can be used to include the balance of the whole masonry panel in the limit state equations of an extreme section.
In this paper 3D domains are presented to describe the interaction between shear force, axial force and its eccentricity for prismatic URM panels with rectangular cross-section. For both elastic and ultimate limit states, sectional equilibrium equations corresponding to a given axial strain diagram are merged with those of the entire masonry panel for cracked and uncracked conditions separately. Such domains are defined in a dimensionless format in order to be independent of the compressive strength of masonry. Limit state equations were derived for five different stress-strain relationships, to investigate the influence of masonry behaviour in uniaxial compression under the assumption of zero tensile strength. In this paper the general formulation is specialised for a strength-degrading constitutive model to emphasise the effects of strain softening.
Finally, the 3D domains were sectioned with planes corresponding to different levels of axial force and axial force eccentricity in order to derive 2D interaction domains expressed respectively in terms of shear force versus axial force eccentricity and shear force versus axial force. It is shown that any increase in the axial force eccentricity causes a rotation of the shear force versus axial force domain, resulting in an allowable axial force lower than that associated with concentric compression
A shear response surface for the characterization of unit-mortar interfaces
No full textShear behaviour of unit-mortar interfaces is typically characterized through the Mohr-Coulomb failure model and shear stress versus shear strain diagrams. In porous stone masonry types such as tuff masonry, dilatancy plays also a key role and shear strength of unit-mortar interfaces at zero confining normal stress is non-zero due to the slip surface’s roughness.
To characterize nonlinear shear behaviour for tuff masonry assemblages, direct shear tests were carried out under different pre-compression levels. This paper summarises the experimental program discussing the main results. Empirical formulas are presented to define shear failure at both peak and residual stress levels. Shear deformation capacity, strength degradation, mode II fracture energy, and dilatancy coefficient were computed.
Multiple regression analysis was applied to derive a shear response surface including both stress-strain diagrams and the frictional strength model. Constraints on the continuity of both the shear response surface and its first partial derivatives were imposed to nonlinear regression analysis, in order to represent shear softening behaviour in the inelastic range. The surface was defined in a dimensionless space to be used, in principle, for other stone masonry interfaces. This empirical model allows to simulate the shear behaviour over the whole range of allowable strains, and hence the stress-strain diagram at any confining stress level.
The experimental results and the proposed empirical models could be employed in both micro-modelling numerical strategies and simplified nonlinear analysis methods based on the macro-element idealisation of masonry walls with openings
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
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