1,721,602 research outputs found
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
Eimeria psittacarae n. sp. (Apicomplexa: Eimeiriidae) from white-eyed parakeets Psittacara leucophthalmus (Müller, 1776) (Psittaciformes: Psittacidae) kept for rehabilitation and reintroduction in the Parque Nacional da Serra dos Órgãos, Southeastern Brazil
No full textTucunduva, Priscila, Rodrigues, Mariana Borges, Carvalho, Raquel Batista Junger De, Berto, Bruno Pereira (2018): Eimeria psittacarae n. sp. (Apicomplexa: Eimeiriidae) from white-eyed parakeets Psittacara leucophthalmus (Müller, 1776) (Psittaciformes: Psittacidae) kept for rehabilitation and reintroduction in the Parque Nacional da Serra dos Órgãos, Southeastern Brazil. Zootaxa 4459 (1): 164-170, DOI: 10.11646/zootaxa.4459.1.
A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeiriidae) from the grey-hooded attila Attila rufus Vieillot, 1819 (Passeriformes: Tyrannidae) on the Marambaia island, Brazil
No full textRodrigues, Mariana Borges, Silva, Lidiane Maria Da, Lopes, Bruno Do Bomfim, Berto, Bruno Pereira, Luz, Hermes Ribeiro, Ferreira, Ildemar, Lopes, Carlos Wilson Gomes (2015): A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeiriidae) from the grey-hooded attila Attila rufus Vieillot, 1819 (Passeriformes: Tyrannidae) on the Marambaia island, Brazil. Zootaxa 4034 (1): 193-196, DOI: 10.11646/zootaxa.4034.1.1
Segregação socioespacial e acessibilidade em Itajubá/MG: uma contribuição para residentes de habitação de interesse social
Full text linkAlthough segregation and accessibility studies has advanced in recent years and academia and
public planners have demonstrated considerable interest, even so these themes are treated as
isolated form and for the most part in big cities and metropolises. The location of Social Interest
Housing (HIS) is a big social problem in Brazil since they are allocated in places without urban
infrastructure and it is remoted from public services and equipment. In front of this context, this
work aims to analyze the relationship between socio-spatial segregation and accessibility in the
municipality of Itajubá/MG it is going to emphasize Social Interest Housing. To perform this
search, it was done a case study based on geospatial analysis in a Geographic Information
System (GIS) and statistical techniques. Firstly, it was examined socio-spatial segregation and
accessibility, where the result is the average of equal values obtained for each of the variables
considered. The Moran Global and Local Indexes were used to test the spatial autocorrelation
of two analyses, finally the Pearson Correlation Coefficient was applied to analyze the
correlation between them. The results showed us that lower segregation values originate from
some census areas in Centro and Pinheirinho districts, followed by other sectors around central
area. Peripheral areas have higher segregation value, where there are exactly two social
residentials units analyzed are found. With respect to accessibility, there is an opposite situation
due to central region has higher values for the detriment of peripheral regions. The Vitória
residential is situated in sector with higher socio-spatial segregation value and lower
accessibility value, conversely the Esperança Residential is in second class with higher
segregation values and in second class with lower accessibility values. It was pointed out that
results of two analyzes have considerable spatial autocorrelation, in other words, there is a
meaningful tendency for low or high segregation sectors to being contiguous to other with the
same characteristic, and low or high accessibility sectors to being neighbors to others with the
same results. Furthermore, they have a significant negative correlation with each other in 73%
of the sectors, in other words, higher value of socio-spatial segregation in a sector, lower is
going to be accessibility value for that sector, and vice-versa. The research presents practical,
scientific and social implications and it was contributed to studies of socio-spatial segregation
and accessibility based on multiple criteria in medium-sized cities.Embora estudos de segregação e acessibilidade tenham evoluído nos últimos anos e também
ganhado o interesse da academia e de planejadores públicos, ainda são temas tratados de forma
isolada e na maioria das vezes em grandes cidades e metrópoles. A localização das Habitações
de Interesse Social (HIS) é um grande problema social no Brasil, visto que são alocadas em
lugares sem infraestrutura urbana e distantes de serviços e equipamentos públicos. Diante desse
contexto, o trabalho objetiva analisar a relação entre a segregação socioespacial e a
acessibilidade no município de Itajubá/MG destacando as Habitações de Interesse Social. Para
a execução do trabalho, foi realizado um estudo de caso em que foi utilizada a análise
geoespacial em um Sistema de Informações Geográficas (SIG) e técnicas estatísticas.
Primeiramente, foram realizadas análises da segregação socioespacial e da acessibilidade, onde
o resultado é a média dos valores normalizados obtidos em cada uma das variáveis
consideradas. Os Índices de Moran Global e Local foram utilizados para testar a autocorrelação
espacial das duas análises, e, por fim, foi aplicado o Coeficiente de Correlação de Pearson para
analisar a correlação entre elas. Os resultados apontaram que os menores valores de segregação
são de alguns setores censitários dos bairros Centro e Pinheirinho, seguido dos demais setores
no entorno da área central. Os setores periféricos possuem os maiores valores de segregação,
onde encontram-se, justamente, os dois residenciais de habitação social analisados. Em relação
à acessibilidade, a situação é oposta, pois a região central possui os maiores valores em
detrimento das regiões periféricas. O Residencial Vitória está localizado no setor com o maior
valor de segregação socioespacial e o menor valor de acessibilidade, já o Residencial Esperança
está na segunda classe com os maiores valores de segregação e na segunda classe com os
menores valores de acessibilidade. Foi apontado que os resultados das duas análises têm forte
autocorrelação espacial, ou seja, há grande tendência dos setores com baixa ou alta segregação
serem contíguos a outros com igual característica, e os setores com baixa ou alta acessibilidade
serem vizinhos a outros com os mesmos resultados. Evidencia-se também que possuem forte
correlação negativa entre si em 73% dos setores, isto é, quanto maior o valor de segregação
socioespacial em um setor menor o valor da acessibilidade para o mesmo, e vice-versa. A
pesquisa apresenta implicações práticas, científicas e sociais contribuindo com os estudos da
segregação socioespacial e da acessibilidade a partir de múltiplos critérios em cidades de médio
porte
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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