1,720,971 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
Factors affecting adoption of improved sorghum varieties in Tanzania under information and capital constraints
No full textLow adoption of agricultural technology is among the main reasons for low farm
productivity and high incidence of poverty and food insecurity in sub-Saharan
countries including Tanzania. In this study, we examine the factors affecting adoption
of improved sorghum varieties using data from 822 randomly selected sample
households in northern and central Tanzania. We employ a multiple-hurdle Tobit
model to assess the factors affecting adoption after controlling for both capital and
information constraints. We also use t-distributed stochastic neighbor embedding to
cluster farmers into homogeneous groups. The method allows to reduce the
dimensionality while preserving the topology of the dataset, which increases the
clustering accuracy. It also superiors for visualization of the clustering results. Results
show that radio and other mass media outlets that create awareness will increase
adoption among farmers who do not face capital constraint. Some farmers lack basic
resources such as land and capital, and subsidies could have a high impact on these
farmers. Other farmers simply need assurance on the performance of improved
sorghum varieties. Field days, on-farm trials, and demonstration plots could be useful
in supporting these farmers. A tailored support system, however, needs a sustained
investment in both quantity and quality of services. There is therefore a need to
develop a pluralistic research and extension systems that encourage the use of
information technologies and community-based organizations to reach specific
groups of farmers
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
Assessment of stakeholders\u27 knowledge, attitude, and practice in cattle production and supply chain on antimicrobial usage in Kilosa District, Morogoro
Full text linkAntimicrobial drugs play fundamental roles such as prophylaxis, treatment, and growth promotion in the animal husbandry. The inappropriate use of antimicrobials in livestock production has resulted in a global burden of antimicrobial residues and antimicrobial resistance in humans. The study was conducted to assess the knowledge, attitude, and practice of stakeholders on the use of antimicrobial drugs in livestock production. A cross-sectional study based on a semi-structured questionnaire was conducted to determine the awareness of stakeholders (N = 310) on antimicrobial usage in Kilosa district, Tanzania. Stakeholders were selected using multi-stage stratified random sampling. Data were analyzed using SPSS software, employing descriptive statistics, the Kruskal-Wallis test, the Manny-Whitney U-test, and Spearman rank correlations. Results showed that most stakeholders had a low level of knowledge, with a mean score of 3.4±1.9, while livestock officers exhibited higher knowledge with a mean score of 6.7±0.5 compared to other stakeholders. Knowledge scores were significantly influenced by gender and education (p<0.05). Stakeholders generally demonstrated negative attitudes towards antimicrobial usage, with a mean score of 5.5±1.7, except for livestock officers and cattle keepers, who had positive attitudes of 8.7±0.7 and 9.4±2.0, respectively. Consumers and butchers showed negative attitudes, with scores of 6.1±1.4 and 4.0±1.3, respectively. Attitudes were significantly influenced by gender, age, and marital status (p<0.05). Poor practices were also revealed among stakeholders, with a mean score of 4.4±1.5, whereas livestock officers demonstrated good practices with a mean score of 16.0±1.4. Practice scores were significantly influenced by age, gender, and education (p<0.05). Significant associations between knowledge, attitude, and practice scores across stakeholder groups were found (p<0.05), with post hoc analysis confirming statistically significant differences (p<0.05). The majority of stakeholders exhibited low knowledge, negative attitudes, and poor practices regarding antimicrobial usage. Implement education programs to enhance stakeholder knowledge and practices
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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