1,721,262 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
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
Misalignment factors to affect the fatigue of welded load-carrying joints
Full text linkTo assess the effects of misalignment on the weld fatigue, we present experimental fatigue test results of load- carrying cruciform joints which are subjected to axial variable amplitude loading. The welds were produced from steel AH36 grade and fatigue strength improved by high-frequently mechanical impact treatment. We identify several misalignment factors affecting the fatigue by considering the real and reference welded joint geometries. Our methodology includes proposals for the empirical calibration functions and local stress analyses by using the Structural Hot Spot Stress, Effective Notch Stress and Peak Stress Method. Additionally, we apply our methodology to other sixteen data sets which are extracted from the literature for load-carrying cruciform and butt welded joints subjected to constant amplitude loading. Finally, we present the resultant calibration functions with respect to corresponding fatigue test data
Observing the effects or rapid industrialization, on forestry and pastures by remote sensing
No full textRapid and uncontrolled industrialization in an area and related population growth require fast assessments for the actual land-cover/land-use (LC/LU) maps and related practices, in order to avoid the overuse and damaging of the landscape beyond sustainability. Growth of industry, brings an increase in population beyond its needs, increasing the housing demands. All these may cause the loss of vegetation cover in the region, mostly of forestry and grassland in the present case (YILDIRIM et al., 1997, 2002). Modern remote sensing and geographic information system (GIS) technologies fit well for the evaluation and long term monitoring of such effects. In the present case, a region of Gebze County (Kocaeli-Turkey), 50 km east of metropolitan Istanbul is considered as a pilot site for long term monitoring of such rapid changes and their effects on the vegetation cover and environment. The region is observed between 1985-2005, by satellite images and quantified the LC/LU changes. Comparisons were then made among the observed patterns over these years and also between images and the land-use patterns projected by the government planning offices carried out in the region in the start of the interval considered. The LC/LU patterns quickly overshot the planned industrial and settlement areas in much less than a decade. The research work also includes an interval just before the 17 August 1999 Marmara Earthquake devastated the dwellings and roads in the area to a large extent. Therefore, the results could also be used, for a comparison of before and after earthquake inventories in many areas. The results in 2005 were indicative of rather fast recovery of the region from the negative effects of earthquake, in many respects. Further, a projection from the observed trends to the year 2010 (the next 5 years) was also made: Industrial areas are expected to increase to about 25% of all the total land area, from a start in 1986, of 2.4% to a 9% in a decade. Forests, although constitutionally protected, also may reduce to 20% (from a starting value of 30%). However the main loser among vegetation cover types was the pasture, which started at 39% in 1986 and is reduced to 5% in 2005. Extrapolation to 2010 is indicative of the possibility that no pasture area would be left in the region
Observing the effects or rapid industrialization, on forestry and pastures by remote sensing
No full textRapid and uncontrolled industrialization in an area and related population growth require fast assessments for the actual land-cover/land-use (LC/LU) maps and related practices, in order to avoid the overuse and damaging of the landscape beyond sustainability. Growth of industry, brings an increase in population beyond its needs, increasing the housing demands. All these may cause the loss of vegetation cover in the region, mostly of forestry and grassland in the present case (YILDIRIM et al., 1997, 2002). Modern remote sensing and geographic information system (GIS) technologies fit well for the evaluation and long term monitoring of such effects. In the present case, a region of Gebze County (Kocaeli-Turkey), 50 km east of metropolitan Istanbul is considered as a pilot site for long term monitoring of such rapid changes and their effects on the vegetation cover and environment. The region is observed between 1985-2005, by satellite images and quantified the LC/LU changes. Comparisons were then made among the observed patterns over these years and also between images and the land-use patterns projected by the government planning offices carried out in the region in the start of the interval considered. The LC/LU patterns quickly overshot the planned industrial and settlement areas in much less than a decade. The research work also includes an interval just before the 17 August 1999 Marmara Earthquake devastated the dwellings and roads in the area to a large extent. Therefore, the results could also be used, for a comparison of before and after earthquake inventories in many areas. The results in 2005 were indicative of rather fast recovery of the region from the negative effects of earthquake, in many respects. Further, a projection from the observed trends to the year 2010 (the next 5 years) was also made: Industrial areas are expected to increase to about 25% of all the total land area, from a start in 1986, of 2.4% to a 9% in a decade. Forests, although constitutionally protected, also may reduce to 20% (from a starting value of 30%). However the main loser among vegetation cover types was the pasture, which started at 39% in 1986 and is reduced to 5% in 2005. Extrapolation to 2010 is indicative of the possibility that no pasture area would be left in the region
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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