1,721,015 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
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
Sustaining Economic Development of West African Countries: A System GMM Panel Approach
Get PDFThe paper investigates the relationship between foreign direct investment and economic growth in ECOWAS using the System-GMM panel estimation technique covering the period 1970-2011.The study adopted System-GMM in order to overcome the weaknesses perceived in the empirical works of earlier studies; majority of these studies failed to control for the presumed challenges of endogeneity inherent in the FDI-Growth argument. The study likewise interacted human capital and institutions indicators with other explanatory variables in explaining the variability of FDI. The results of the System-GMM appears contrary to earlier studies, as the contribution of FDI was insignificant and impacts negatively on growth in ECOWAS despite the controlling for the role of human capital and quality of institutions in the model. Following this outcome, policy makers in developing Africa needs to exercise cautions in adopting the recommendation from earlier studies; most of which advocates more openness, advancing human capital development and strengthening institutions. This might not be completely helpful considering the pattern of FDI inflow into ECOWAS, which is absolutely resource-seeking. There is need to curtail excessive openness in the extractive industries, encouraging more manufacturing FDI and domestic investment of repatriated capital by ensuring more economic stability and raising domestic interest rate
Transnational Trade In Ecowas: Does Export Content Matter?
Get PDFIn spite of the vast deposit of resources and human endowments in ECOWAS region, gains from trade have really been marginal in the region. ECOWAS members have poor performance in export of dynamic products; they remained commodity dependent in its exports, leading to transfer of economic gains across border. Over 90% of the region’s export is primary products with very little value-added which accentuated from commodity price and demand inelasticity resulting in terms of trade losses and volatile foreign earnings. Based on these facts, the study tries to investigate the impact of export diversification and composition on GDP growth and GDP per capita respectively. This was achieved using econometric analyses involving co-integration technique and a panel least square technique for the period of 1975-2009 and 1990-2007 respectively in 15 ECOWAS states. The study was deemed significant, as export diversification and manufacturing value-added index induced a positive and significant impact on per capita income growth. The study found high skewness of ECOWAS to commodity export in the period observed but a vertical diversification of product base would emanates more spill-over and surplus gains from the regions endowments. The conclusive finding centred on that fact that it is not how much that is exported that matters but very important is what is exported as regions with less specialization and more diversified exports generally experienced higher economic growth rates and contributed much more to overall exports. Notable recommendation for ECOWAS policy makers is the need to develop domestic processing capability and see export as originating from domestic sufficiency
Does Government Expenditure Spur Growth In ECOWAS?
Get PDFThe paper attempts to investigate the relationship between government expenditure and economic growth in fifteen ECOWAS countries for the period of 2000-2010. The study adopts a panel data framework using the fixed and random effect model; the Hausman test employed in the model emphasized the appropriateness of the fixed effect model. The study found the indicator of government expenditure to induce a positive inelastic variation on economic growth; while the growth rates of government expenditure induce a nearly perfect inelastic negative variation on the GDP growth rates, this would not be unconnected with the weak fiscal discipline in the Nigerian economy. Our finding from estimation of growth rates is more pertinent to this study since the inclusion of rates would have accounted for the periodic effect. Prominent policy recommendation is the need to develop institutions that would ensure realistic, transparent and appropriate channelling of government expenditure towards productive economic activities
Is Aid Really Dead? Evidences from Sub-Saharan Africa
Get PDFThis study examined the relationship between foreign aid and economic development in Sub Saharan Africa. The study seeks to examine the role of institutions in aid effectiveness in SSA countries by adopting a theoretical framework similar to the Endogenous/New Growth model and the System Generalized Method of Moments (GMM) technique of estimation in order to overcome the challenge of endogeneity perceived in the institution variables and Aid-Growth argument. It was observed that foreign aid does not significantly influenced Real GDP Per Capita in Sub-Saharan Africa, even after controlling for adequate rule of law and sound public institutions. In the same manner; capital stock, rule of law, control of corruption and Human capital enhanced economic performance while foreign aid failed to contribute meaningfully to economic development in SSA Countries
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