1,721,021 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
Impact of agricultural extension services on technology adoption and crops yield: empirical evidence from Pakistan
No full textThe present study was carried out in the rice-wheat area of Pakistani Punjab. The data for the study was collected from three main districts of central Punjab Province i.e. Gujranwala, Sheikhupura and Hafizabad. In total 234 farmers were interviewed. The impact of agricultural extension services was estimated on adoption of new improved technologies and crop yields. The propensity score matching approach for impact evaluation was employed in the current study to correct for potential sample selection biasedness that may arise due to systematic differences between the farmers having benefited from agricultural extension services and not benefited from agricultural extension services. The empirical results indicate that agricultural extension services play a significant role in adoption of improved agricultural technologies like laser leveling, rice and wheat varieties. The farmers having benefitted from agricultural extension services were also getting higher rice and wheat yields. The results also indicates that mostly the large farmers are getting benefits from agricultural extension services and small scale farmers have less access to agricultural extension services.801-81
Hybrid Maize Seed Adoption and Impact on Livelihood: Empirical Evidence from Maize Growers in Pakistan
Get PDFThe price of the maize hybrids in Pakistan is one of the highest in the world. The current study is based on comprehensive data set collected through field survey from 822 maize growers across Pakistan. The data was collected all the four major provinces of Pakistan i.e. Punjab, Sindh, Khyber Pakhtunkhwa (KPK) and Balochistan including Azad Jammu and Kashmir (AJK) and Gilgit Baltistan (GB). The propensity score matching analysis was employed for empirical analysis and four different matching algorithms i.e. Nearest Neighbour Matching (NNM), Kernel Based Matching (KBM), Radius Matching (RM) and Mahalanobis Metric Matching (MMM) to check the robustness of results. The empirical results indicated that maize hybrid adopters have higher yields in the range of 2.35-3.11 maunds per hectares as compared to non adopters. Similarly household income levels are higher in the range of 2176-3518 Pakistani rupees. The poverty levels are less in the range of 2-3 percent. The reduction in the maize hybrid seed price will leads to increase in adoption of hybrid seed, hence will help to increase the wellbeing of the farmers as currently, only 30 percent of maize area is under hybrids mainly due to lack of affordability.
Acknowledgement : The current study was made possible through USAID funded Agricultural Innovation Program (AIP) program for Pakistan
Lead farmers: enhancing agricultural resilience and sustainability in Eastern and Southern Africa
No full textIn the following pages you will read inspiring and moving accounts by men and women farmers across eastern and southern Africa who have bravely embraced change to improve their farming methods and hence the lives and livelihoods of their families. These men and women have been associated to one extent or another with the Sustainable Intensification of Maize-Legume Cropping Systems for Food Security in Eastern and outhern Africa (SIMLESA) program. The SIMLESA program was mplemented for 9 years between 2010 and 2019 in 7 African countries (Ethiopia, Kenya, Malawi, Mozambique Tanzania and from 2014, Rwanda and Uganda).23 page
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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