1,720,960 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
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
ESG portfolio financial performance: Evidence from Casablanca Stock Exchange
Get PDFThis research paper seeks to analyze the performance of a socially responsible portfolio constituted by the stocks composing "Casablanca ESG 10" index through comparing it with a conventional portfolio that is not interested in this distinction of social responsibility.According to the results of the first step of the Mean-Variance-Skewness-Kurtosisoptimization model which consists in determining the best scenarios, we found that the ESG portfolio is less performing at the level of all the moments (mean, variance, skewness and kurtosis). As for the second step of incorporating investor preferences into the Polynomial Goal Programming, we found that the ESG portfolio is more advantageous in terms of skewness, although it is less diversified
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
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
Analyse comparative du risque financier des actions ESG et des actions conventionnelles
No full textThis research paper aims to show which ESG and conventional stocks have the advantage of being less risky.This involves carrying out a systematic risk analysis and the specific risk of socially responsible stocks by comparing them with those of conventional (classic) stocks. The analysis concerns the stocks of 56 Moroccan companies listed on the Casablanca Stock Exchange (BVC) and the evolution of their values during the period from 01/04/2010 to 01/31/2019. Two sets of stocks were chosen as independent samples to conduct this comparative analysis. A first sample consists of 10 stocks forming the "Casablanca ESG 10" stock market index, and the second sample contains 46 stocks also listed on the BVC.
The tests of normality have shown that the total, systematic and specific risk distributions for the two types of ESG and conventional stocks do not all follow a normal distribution. This means that using the Student's t-test to compare the means of total, systematic and specific risks is not sufficient, so it is important to also use the non-parametric Mann-Whitney U test.
Thus, the use of the two aforementioned tests made it possible to show that conventional equities and ESG equities effectively present the same levels of risk for both total risk and specific risk. On the other hand, the systematic risk was shown to be higher for ESG stocks than for conventional stocks.
JEL Classification : C12, D81, G11, M14.
Paper type : Empirical researchCe papier de recherche a pour but de montrer lesquelles des actions ESG et conventionnelles ont l’avantage d’être moins risquées. Il s’agit pour cela de mener une analyse du risque systématique et du risque spécifique des actions socialement responsables à travers la comparaison de ces derniers avec ceux des actions conventionnelles (classiques). L’analyse porte sur des actions de 56 entreprises marocaines cotées à la Bourse des Valeurs de Casablanca (BVC) et sur l’évolution de leurs valeurs au cours de la période s’étendant du 04/01/2010 au 31/01/2019. Deux séries d’actions ont été choisies comme échantillons indépendants pour mener cette analyse comparative. Un premier échantillon est constitué par les 10 actions formant l’indice boursier « Casablanca ESG 10 », et le deuxième échantillon contient 46 actions cotées aussi à la BVC.
Les tests de normalité ont montré que les distributions des risques totaux, systématiques et spécifiques pour les deux types d’actions ESG et conventionnelles ne suivent pas toutes une loi normale. Ce qui signifie que l’utilisation du test t de Student pour comparer les moyennes des risques totaux, systématiques et spécifiques n’est pas suffisante, il est donc important d’utiliser aussi le test non paramétrique U de Mann-Whitney.
Ainsi, l’emploi des deux tests précités a permis de montrer que les actions conventionnelles et les actions ESG présentent effectivement les mêmes niveaux de risque aussi bien pour le risque total que pour le risque spécifique. Par contre, le risque systématique s’est montré plus élevé pour les actions ESG que pour les actions conventionnelles.
Classification JEL : C12, D81, G11, M14.
Type de l’article : Recherche appliqué
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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