1,720,958 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
Social Capital and the Urban Informal Economy:The Case of Street Vendors in Addis Ababa, Ethiopia
No full textMicro-enterprise development has become one of the most important approaches to reduce poverty in the LDCs. Like other LDCs, in Ethiopia micro-enterprise development forms the major component in the promotion of broad based growth and improvement of the well-being of the poor by providing income generating opportunities. Accordingly, formalizing informal sector activities has become one of the priorities of micro-enterprise programs. The main aspect of micro-enterprise programs is the use of social capital as a substitute for collateral in providing credit and forming enterprise groups. Despite the significance of social capital in micro-enterprise programs in particular and the informal economy in general, its nature and potential contributions remain under-investigated in Ethiopia. The purpose of this study is, therefore, to examine the configuration of social capital among the poor street vendors in Addis Ababa. The study has employed the network approach to social capital. Data were collected from 154 street vendors living in Addis Ababa. Multi-stage sampling procedures involving purposive and systematic random-walk techniques were used to draw samples. The study applies a mixed-methods research design. Accordingly, quantitative and qualitative data were collected through name and position generator surveys and in-depth interviews. While the quantitative data were analyzed through social network analysis procedures and statistical techniques, the data from interviews were transcribed, classified, and presented in a narrative form. Two-sample T-test, one-way-ANOVA, and OLS and Instrumental Variable regression models were used as statistical tools for the study. The results of the study reveal that homophily in religion and ethnic lines forms the strongest divide among street vendors’ personal networks followed by sex and marital status homophily. However, street vendors exhibit heterophilous networks regarding income, age, and occupation. Street vendors demonstrate dense, less effective, less efficient, and highly constrained network structures. They also exhibit greater proportion of strong ties in their personal networks. Street vendors have most of their relationships with people of lower occupational prestige. In addition, they have low access to high prestige positions, low resource heterogeneity, and low social capital volume.
Comparisons of networks between gender and among ethnic groups show the presence of significant differences. Women’s network exhibits larger percentage of strong ties and more ethnic and religious homogeneity than men. Also, women exhibit small network size, less effective, and highly constrained networks. Network characteristics by ethnic group shows that the Gurages exhibit high proportions of strong ties and high levels of ethnic homophily but embedded in networks of diverse education, occupation, and income compared to the Amharas and the Oromos. Conversely, the Amharas have diverse ethnic and religious contacts and demonstrate relatively high proportions of weak ties than others. Structurally, while the Gurages exhibit large network size with dense and less effective networks; the Amharas display small network size and less dense networks. The overall heterogeneity index shows that the Gurages exhibit more heterogeneous networks than the Amharas and the Oromos. By examining network dynamics, the study also reveals significant changes in the number and nature of ties kept, ties lost, and new ties created over the phases of enterprise development. There have also been changes in network composition and structure over the three entrepreneurial phases. The study further investigated the effect of social capital in enterprise performance. Four separate regression models were fitted to predict the effect of relational, structural, and embedded resources dimensions of social capital on enterprise performance. After controlling the potential endogeneity problem of social capital, the estimation results revealed that the resources embedded in networks contribute positively to enterprise performance compared to the strength of ties and the structural constraint. Human capital measures, on the other hand, do not significantly predict enterprise performance.
The implications of the outcomes of the study is that in providing credit and establishing enterprise groups, micro-enterprise programs should evaluate the trade-off between strong versus weak ties and homogeneity versus heterogeneity of networks. While religion, ethnicity, gender, and marital status homophily as well as strong family and friendship ties are worthwhile for credit delivery and forming enterprise groups, network heterogeneity is central for enterprise success. Overall, it is unlikely that social problems can be resolved without analyzing the social ties of individuals in particular and the community in general. Thus, it is imperative to conduct further studies in a broader scope to advance the significance of social capital for poor targeted development interventions in Ethiopia
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
A Network Perspective of Economic Relations and Markets
Full text linkA review of the research literature applying social network analy sis to different aspects of economics (markets, firms and economic organiza tions, policies and public administration) will be presented. The review will specifically explore the contributions that network analysis has made to the investigation of market relations and interactions between firms either at the level of whole economies or regional areas globalization (chapters 3 and 4), entrepreneurship and social development (chapter 4) and finally, contem porary transformation of economic relations and technological innovation (chapter 5). The introduction describes the methodological perspective of social network analysis and specifically its application to economic and historical sources.A review of the research literature applying social network analy sis to different aspects of economics (markets, firms and economic organiza tions, policies and public administration) will be presented. The review will specifically explore the contributions that network analysis has made to the investigation of market relations and interactions between firms either at the level of whole economies or regional areas globalization (chapters 3 and 4), entrepreneurship and social development (chapter 4) and finally, contem porary transformation of economic relations and technological innovation (chapter 5). The introduction describes the methodological perspective of social network analysis and specifically its application to economic and historical sources
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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