1,721,629 research outputs found
Tracing the impact of El Nino on agriculture and life in Mirpur Khas
Get PDFDrought, flood and decrease in average rainfall are severely impacting Mirpur Khas in Sindh province. This has resulted in several challenges in the agricultural sector. Ghamz E Ali Siyal, Mohsin Ali Kazmi and Benazir Khumbhar trace the impacts of El Nino in the district
Impact of board structure and firm performance on chief executive's compensation / Mohsin Ali Patel
Get PDFThe corporate board usually influences all important decisions of a firm including setting of its long-term goals, developing a corporate strategic policy, as well as hiring and setting the compensation of the chief executive. Moreover, the organization of the board may have a significant effect on the monitoring and governance of the company. This paper analyses the impact of structure of the board and firm performance on chief executive compensation, in an emerging economy context specifically, Pakistan. Chief executive compensation is one of the controversial and sought after topics in research nowadays. Interestingly, the exploration into the topic has found that there is a significant and positive impact of the non-executive directors serving on the corporate boards on the compensation of chief executive. Furthermore, the size of the board has also showed to have a significant and positive impact on the chief executive’s compensation which logically means that the companies in which the boards are larger than the mean size will relatively pay higher to their chief executives. Also it was found that the performance of the firm does not have a statistically significant impact on chief executive compensation. These results have policy implications and are important to corporate stakeholders
Partial discharge measurement and modelling within an artificial cylindrical-shaped insulation under non-uniform electric field / Mohsin Ali Tunio
Get PDFIn the presence of void in cable insulation, repetition of partial discharge (PD) occurrences is one of the main sources of insulation degradation, which may lead to complete breakdown. Therefore, it is important to monitor the condition of cable insulation through PD measurement. Replicating PD measurement on a test object with a shape similar to power cable insulation geometry may help a better understanding of PD characteristics within cable insulation to be achieved. Therefore, in this work, test samples of cylindrical insulation-shaped material containing an artificial void were prepared in the laboratory for PD experiments. PD measurements on test specimens containing an artificial void within cylindrical insulation-shaped geometry for various amplitude, frequency and waveshape of the applied voltage, void sizes and temperature of the insulation material were performed.
A physical model of PD activities within an artificial void in void in cylindrical insulation-shaped geometry was also proposed using Finite Element Analysis method and MATLAB. The advantage of this model over the previously reported models is this model can be used for simulation of PDs within a non-uniform electric field distribution in a void. The model was applied for simulation of PDs within the void in cylindrical insulation-shaped geometry to increase the understanding on PD physical phenomena through comparison with the measurement results. PD model parameters related to electron generation rate were determined using an optimisation method, the particle swarm optimisation (PSO). Comparison between the simulation and measurement results has managed to reveal the important parameters affecting PD phenomena within a void having non-uniform distribution of the electric field. These include distribution of charges on the void wall, decay rate of charges by surface conduction, inception field, extinction field and electron generate rate through surface emission and volume ionisation
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
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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