1,720,958 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
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
RICE POLICIES AND PRIORITIES IN MAURITANIA
Get PDFIf there is an economic crisis in Sub-Saharan Africa, as is now generally accepted by the worldwide community, Mauritania falls in the category of most severely affected countries. The most severe consequence of the crisis has been the death of thousands of people from starvation, in Mauritania and elsewhere. Domestic policy issues have been singled out by Eicher in his "Africa's Food Crisis" as being at the heart of the problem. In search of solutions, governments have failed to consider population growth and "agrarian socialism" as possible sources of their problem. Based on the conclusions of most reports, the governments' search procedure for courses of action might best be described as one of "tatonnement,' or trial-and-error experimentation. The colonial legacy, the drought cycle, and migration are cited in the literature as the major causes of the African economic crisis. Whether these arguments hold or not, a famine has occurred in much of Western Africa, and that is a fact. How the famine came about and how it has been perpetrated is still subject to investigation.
Overall, the intellectual community seems to agree upon the existence of a self-sustaining agriculture on the eve of the independence era. This agriculture was characterized as rudimentary, but granaries were never empty. Rarely in the past did people starve. Why should the post-independence period be distinguished by so many failures: 1) a negative growth rate of agricultural production; 2) an increasing foreign exchange deficit; and 3) desertification and general environmental degradation. A glance at selected economic indicators suggests that the negative trends will continue if appropriate actions are not taken at once
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
RICE POLICIES AND PRIORITIES IN MAURITANIA
No full textIf there is an economic crisis in Sub-Saharan Africa, as is now generally accepted by the worldwide community, Mauritania falls in the category of most severely affected countries. The most severe consequence of the crisis has been the death of thousands of people from starvation, in Mauritania and elsewhere. Domestic policy issues have been singled out by Eicher in his "Africa's Food Crisis" as being at the heart of the problem. In search of solutions, governments have failed to consider population growth and "agrarian socialism" as possible sources of their problem. Based on the conclusions of most reports, the governments' search procedure for courses of action might best be described as one of "tatonnement,' or trial-and-error experimentation. The colonial legacy, the drought cycle, and migration are cited in the literature as the major causes of the African economic crisis. Whether these arguments hold or not, a famine has occurred in much of Western Africa, and that is a fact. How the famine came about and how it has been perpetrated is still subject to investigation. Overall, the intellectual community seems to agree upon the existence of a self-sustaining agriculture on the eve of the independence era. This agriculture was characterized as rudimentary, but granaries were never empty. Rarely in the past did people starve. Why should the post-independence period be distinguished by so many failures: 1) a negative growth rate of agricultural production; 2) an increasing foreign exchange deficit; and 3) desertification and general environmental degradation. A glance at selected economic indicators suggests that the negative trends will continue if appropriate actions are not taken at once.Crop Production/Industries,
LA PROBLEMATIQUE DE L’ASPECT EN GRAMMAIRE
No full textLa présente étude évoque d’abord le suremploi et l’omniprésence de l’aspect en grammaire anglaise et française. Elle met ensuite l’accent sur le caractère nébuleux de cette notion qui a été empruntée aux langues salves et introduite dans les langues romanes, germaniques et africaines. Enfin, l’analyse se termine sur les controverses suscitées par le terme dans l’explication des temps avec ou sans BE + – ing en anglais et dans celle opposant le passé simple et l’imparfait en français
- …
