1,720,968 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
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
Risks, Challenges, Tradeoffs, and Opportunities in Dynamic, Adaptive Water Supply Systems
Get PDFThe rising costs and regulatory burdens associated with new water supply infrastructure are making it increasingly difficult to meet growing water demands through the development of new supply capacity. Instead, adaptive techniques such as temporary conservation and water transfers are playing a larger role in the water supply planning. While adaptive techniques have many advantages over infrastructure-centric approaches, they also present municipal water utilities with a number of challenges. This dissertation aims to formulate problems that illustrate the tradeoffs between multiple management objectives and help utilities meet performance criteria through the use of novel tools and methods. While this work focuses mostly on a group of interconnected water utilities in the ‘Research Triangle’ North Carolina, the results are generalizable to water supply problems across many regional scenarios. Adaptive techniques like conservation and the purchase of water transfers introduce substantial and unpredictable reductions in revenue (conservation) and cost increases (transfers). Municipal water provision is extremely capital-intensive with large, fixed costs driven by debt service payments. Increased levels of financial risk may affect the ability of a utility to meet debt service payments, reducing their credit rating and increasing the cost of future borrowing. Chapter 2 explores the role of financial mitigation tools in drought management strategies employing both conservation and water transfer purchases. Using multiple problem formulations, we show how the tradeoffs between financial risk and several other management objectives are affected by self-insurance contingency funds and a novel type of third-party index insurance. Pricing incentives (i.e. drought surcharges) can also serve as a financial mitigation tool while simultaneously promoting more efficient conservation. Chapter 3 examines how the additional revenue raised through surcharges may reduce utility incentives to purchase water transfers, potentially harming overall consumer welfare. In Chapter 4, the short-term management strategies developed in Chapters 2 and 3 are integrated into a long-term infrastructure sequencing model. Important interactions between management and planning decisions are incorporated using an adaptive, risk-based framework. This dissertation demonstrates how the added complexity involved with developing adaptive decision-making tools will be crucial to water resource problems in the 21st century.Doctor of Philosoph
Improving Water Utility Financial Stability in the Face of Extreme Weather
Get PDFPopulation growth, economic development, and a growing awareness of the environmental services provided by in-stream flows are increasing challenges for water utilities. Many water managers have addressed these problems by implementing temporary demand management programs like outdoor water use restrictions. However, a large portion of water utility revenue often comes from the volumetric sale of water, and the resulting drop in volumetric revenue can leave them financially vulnerable during prolonged periods of drought. We apply financial tools commonly used in deregulated energy markets to the water utility serving the City of Durham to mitigate potential financial variability. Using utility billing records, financial hedging tools such as drought pricing, contingency funds, and third party insurance based on weather derivative contracts are applied to multi-reservoir simulations driven by synthetic streamflow records. This work should provide useful insights for water utilities seeking to minimize their financial vulnerability during extreme weather events.Master of Science in Environmental Engineerin
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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