1,720,957 research outputs found
Options for emissions reduction from power plants: An economic evaluation
No full textThe electric power sector is regarded globally as the major contributor to local air quality degradation and to global environmental impacts such as acid rain and greenhouse phenomenon. Several mitigation technologies are available to reduce the different emissions, mainly sulfur dioxide, from power plants. The most pronounced ones are switching to low-sulfur fuel oil, filtering stack emissions using flue gas desulfurization systems, and shifting to natural gas as an alternative fuel for thermal power plants. The objective of this paper is to present an economic model that can be used for evaluating and comparing the three alternatives under consideration, so as to determine the most economically feasible option taking into account various cost parameters. This evaluation will incorporate assessment on the environmental damages caused by these emissions and an economic model representing uncertainties in different parameters involved. A case study was conducted on an existing power plant including a sensitivity analysis to examine the impact of different parameters with high levels of uncertainty. © 2004 Elsevier Ltd. All rights reserved.ABBOUD N, 2000, INT J ENVIRON STUD, V57, P225, DOI 10.1080-00207230008711268; Burtraw D, 1997, COSTS BENEFITS REDUC; CHAABAN FB, 2002, WORLD RESOUR REV, V14, P88; Chedid R, 1999, INT J ENERG RES, V23, P303, DOI 10.1002-(SICI)1099-114X(19990325)23:4303::AID-ER4793.0.CO;2-1; Chedid R, 2001, ENERG CONVERS MANAGE, V42, P373, DOI 10.1016-S0196-8904(00)00060-1; Ghaddar N, 1999, APPL ENERG, V63, P53, DOI 10.1016-S0306-2619(99)00018-5; HAFNER M, 1993, TRANSPORT GAZ NATURA; *INT EN AG, 1994, NAT GAS TRANSP PRG R; Jepma Catrinus J., 1998, CLIMATE CHANGE POLIC; LOTT R, NATURAL GAS STRATEGY; Mezher T, 1998, APPL ENERG, V61, P175, DOI 10.1016-S0306-2619(98)00043-9; Park C.S., 1997, CONT ENG EC; TAUD R, 2001, GAB TURBINE POWER PL; *TECHN, 2001, ALT FUL POW NAT GAS; 2001, INT ENERGY OUTLOOK 228191
Transitioning to the green economy: The Arab transport sector policy brief
No full textThis paper highlights the existing policies, current practices, and major trends for the transport sector in Arab countries, and then discusses their current implications on development, social integration, and the environment and the need to adopt non-conventional approaches and measures to provide transport systems that promote sustainable development. The paper explores the potential of developing policies, incentive measures, and green strategies to promote innovative practices for the movement of people and goods, including public transport and, as a result, eliminate the negative impacts from the inappropriate practices nationwide. The paper also addresses establishing a green transport infrastructure network at the regional scale. © 2013 WIT Press
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
Sustainability of engineering education in the Gulf Cooperation Council region
No full textAt the turn of the 21st century, many universities have been established in the Gulf Cooperation Council (GCC) region, many of which are branches of universities from the USA, Europe, Australia, and other regions. In 2004, Dhofar University (DU), in collaboration and partnership with the American University of Beirut (AUB), opened its doors in Oman to follow the American model of higher education in many programs including engineering. Making use of AUB's well known engineering programs in the Middle East, founders of DU have planned to satisfy the demand for a sustainable institution that can serve students as well as society as a whole. This paper presents DU's experience in developing sustainable education institution in a region that lacked for long time private universities. The paper presents the model of collaboration between DU and AUB, and DU's efforts in preparing for accreditation. The paper also presents DU practices in balancing core academics and non-technical skills of engineering students. The cases studied are mainly from the academic programs of the Electrical and Computer Engineering (ECE) Department at the College of Engineering. © 2011 IEEE
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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