1,720,970 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
Finding the Best Indicators to Identify the Poor
No full textEtudes & documentsProxy-means testing (PMT) is a method used to assess household or individual welfare level based on a set of observable indicators. The accuracy, and therefore usefulness of PMT relies on the selection of indicators that produce accurate predictions of household welfare. In this paper I propose a method to identify indicators that are robustly and strongly correlated with household welfare, measured by per capita consumption. From an initial set of 340 candidate variables drawn from the Indonesian Family Life Survey, I identify the variables that contribute most significantly to model predictive performance and that are therefore desirable to be included in a PMT formula. These variables span the categories of household private asset holdings, access to basic domestic energy, education level, sanitation and housing. A comparison of the predictive performance of PMT formulas including 10, 20 and 30 of the best predictors of welfare shows that leads to recommending formulas with 20 predictors. Such parsimonious models have similar predictive performance as the PMT formulas currently used in Indonesia, although these latter are based on models of 32 variables on average
Essays on Development Policies : Social Protection, Community-Based Development and Regional Integration
No full textCette thèse propose une analyse de certaines des politiques considérées actuellement comme étant des éléments-clé de toute stratégie de développement, avec l’objectif de contribuer au récent débat sur le développement international. Je considère en particulier l’élaboration, la mise en oeuvre et l’évaluation des politiques de protection sociale, de développement participatif et d’intégration régionale. Le premier chapitre repose sur l’idée que, pour être efficaces en matière de réduction de la pauvreté, les politiques de protection sociale doivent avoir pour double objectif de permettre aux ménages pauvres d’accéder à des ressources suffisantes pour satisfaire leurs besoins de base, ainsi que de réduire le risque auquel les ménages non pauvres sont confrontés de voir leur niveau de bien-être diminuer sous le seuil de pauvreté. Je propose une méthode permettant d’estimer le degré de vulnérabilité à la pauvreté des ménages. La vulnérabilité est ici définie comme la probabilité pour un ménage de se trouver sous le seuil de pauvreté dans le futur, étant données ses caractéristiques actuelles. Dans le second chapitre, je me place dans un contexte de ciblage des programmes de protection sociale par un score approximant le niveau de vie (proxy-means testing). La précision, et donc l’efficacité, de cette approche pour identifier les ménages pauvres dépendent de la capacité à prédire avec exactitude le niveau de bien-être des ménages, laquelle découle de la sélection de variables pertinentes. Je propose une méthode basée sur l’estimation d’un échantillon aléatoire de modèles de consommation, pour identifier les variables dont la corrélation avec le bien-être des ménages est à la fois élevée et robuste. Ces variables appartiennent à différentes catégories, y compris la possession de biens durables, l’accès aux services d’énergie domestique et d’assainissement, la qualité et le statut d’occupation du logement, et le niveau d’éducation des membres du ménage. Les troisième et quatrième chapitres de cette thèse proposent une analyse ex-post des politiques de développement, et portent en particulier sur les conséquences inattendues d’un programme de développement participatif et les raisons de l’insuffisante performance de politiques d’intégration régionale, respectivement. Le troisième chapitre évalue dans quelle mesure la réaction des deux groupes rebelles présents aux Philippines face à la mise en oeuvre d’un programme participatif d’aide au développement est compatible avec l’idée que ces deux groupes ont différentes idéologies, caractéristiques et raisons pour lutter contre le gouvernement. Il utilise une base de données collectées en utilisant les reportages d’un journal local concernant les épisodes de guerre impliquant ces deux groupes, ainsi que les prédictions d’un modèle d’insurrection basé sur la recherche de rente (rent-seeking). Les résultats sont conformes à la classification proposée de ces deux groupes rebelles ; leur réaction face au projet dépend de leur position idéologique. Le dernier chapitre analyse l’impact des guerres civiles en Afrique sur la performance des communautés économiques régionales, approximée par la synchronisation des cycles économiques des différents partenaires régionaux. Les résultats montrent que la synchronisation des cycles économiques diminue avec l’occurrence de guerres civiles, non seulement pour les pays directement affectés, mais également pour leurs voisins en paix.In this thesis, I aim to contribute to the recent international development debate, by providing an analysis of some of the policies that are considered key elements of a development strategy. Focusing on social protection, community-based development and regional integration, I consider aspects related to their design, implementation and evaluation. In the first chapter, I propose a method to estimate ex ante vulnerability to poverty, defined as the probability of being poor in the near future given one’s current characteristics. This is based on the premise that effective social protection policies should aim not only to help the poor move out of poverty, but also to protect the vulnerable from falling into it. In the second chapter, I consider the issue of identifying the poor in a context of targeting social protection programs using a Proxy-Means Testing (PMT) approach, which precision, and therefore usefulness relies on the selection of indicators that produce accurate predictions of household welfare. I propose a method based on model random sampling to identify indicators that are robustly and strongly correlated with household welfare, measured by per capita consumption. These indicators span the categories of household private asset holdings, access to basic domestic energy, education level, sanitation and housing. The third and fourth chapters of this thesis provide an ex-post analysis of development policies and focus in particular on the unintended consequences of a community-driven program and on the reasons for the lack of progress in regional economic integration. The third chapter assesses whether the reaction of the two distinct rebel groups that operate in the Philippines to the implementation of a large-scale community-driven development project funded by foreign aid is consistent with the idea that these two groups have different ideologies, characteristics and motives for fighting. It is based on a unique geo-referenced dataset that we collected from local newspaper reports on the occurrence of conflict episodes involving these rebel groups, and on the predictions of a rent-seeking model of insurgency. The findings are consistent with the proposed classification of the rebel groups; the impact of the foreign aid project on each rebel group depends on their ideological stance. In the last chapter, I analyze how civil conflicts affect the economic fate of African regional economic communities through its effect on the synchronicity of regional partners’ economies. I find that conflict decreases business cycle synchronicity when it occurs within a regional economic community, both for the directly affected countries and for their more peaceful regional peers
Estimating Vulnerability to Poverty using Panel data: Evidence from Indonesia
No full textEtudes & documentsTraditional poverty measures fail to indicate the degree of risk of becoming or remaining poor that households are confronted to. They can therefore be misleading in the context of implementing poverty reduction policies. In this paper I propose a method to estimate an index of ex ante vulnerability to poverty, defined as the probability of being poor in the (near) future given current observable characteristics, using panel data. This method relies on the estimation of the expected mean and variance of future consumption conditional on current consumption and observable characteristics. It generates a vulnerability index, or predicted probability of future poverty, which performs well in predicting future poverty, including out of sample. About 80% of households with a 2000 vulnerability index of 100% are actually poor in 2007. This approach provides information on the population groups that have a high probability of becoming or remaining poor in the future, whether currently poor or not. It is therefore useful to complement traditional poverty measures such as the poverty headcount, in particular for the design and planning of poverty reduction policies
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
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