1,720,977 research outputs found
The potential of gas-to-liquid technology in the energy market: The case of Qatar
No full textThis paper presents a comprehensive methodology for evaluating the economic attractiveness of gas-to-liquid (GTL) technology in a gas rich country like Qatar. The Qatari gas volume needed to fully satisfy the projected long-term market demand of GTL products (mainly diesel oil) in the Asia-Pacific region is evaluated. Based on the state-of-the-art GTL technology, the number, size and the commissioning dates of GTL plants required for that purpose are determined along with the associated investment and running costs. The economic attractiveness of GTL investment is evaluated based on the internal rate of return, and the impact of adopting large-scale GTL projects on Qatar oil refining industry is assessed. Sensitivity analyses are conducted using several scenarios to account for variations in GTL premium, capital cost, operation and maintenance cost and cost of gas feedstock. © 2007 Elsevier Ltd. All rights reserved.*5 WINDS INT, 2004, GAS LIQ LIF CYC ASS; Chedid R, 2007, ENERG POLICY, V35, P2096, DOI 10.1016-j.enpol.2006.06.011; *CHEML PTY LTD, 2002, GAS LIQ TECHN WORLDW; *EC, 2006, NAT GAS PRIC; *EIA, EIA COUNTR AN BRIEF; Ghaemmaghami B, 2001, OIL GAS J, V99, P64; HAYWARD P, 2005, NEXT GENERATION FUND; *INT EN OUTL, 2005, DOEEIA04842005; OGAWA Y, 2000, RES MARKETABILITY GT; RAHMAN OA, 2005, 2004 SPE ABU DHAB IN; Rahmim II, 2005, OIL GAS J, V103, P18; RAHMIM II, 2003, 26 IAEE ANN INT C PR; 2001, WORLDWIDE GTL PROJEC; 2004, 5 ANN C DUB JAN86
Mitigating energy-related GHG emissions through renewable energy
No full textAn inventory of greenhouse gas emissions from various economic sectors in Lebanon was conducted following the guidelines set by the World Meteorological Organization and United Nations Environment Programme Intergovernmental Panel on Climate Change. The inventory indicated that the energy sector is the major contributor (74%) to greenhouse gas emissions. This paper describes the inventory of energy related GHG emissions and assesses mitigation options to reduce emissions from electricity generation with emphasis on the usage of renewable energy including biomass, hydropower, solar and wind resources. Policy options for overcoming barriers hindering the exploitation of renewable energy resources are discussed in the context of country-specific characteristics
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
A supply model for crude oil and natural gas in the Middle East
No full textCrude oil (CO) and natural gas (NG) play an important role in the world economy. The Arab countries (ACs) share 64percent of the total oil reserves and 40percent of the NG reserves [OPEC, 2003. The Annual Statistical Bulletin]. On the production side, ACs contribute to 30percent and 9percent of the world production of CO and NG, respectively. Accurate forecast models are needed to do better planning and create less risky business environment. In this paper, an econometric model is built to capture the behavior of CO and NG production in the ESCWA11ESCWA is the UN Economic and Social Council of West Asia. It deals with thirteen Arab countries; namely, Lebanon, Syria, Jordan, Palestinian authority, Iraq, Egypt, Saudi Arabia, Kuwait, Qatar, Bahrain, UAE, Oman and Yemen. countries. The model is used to forecast future production trends of CO and NG, and thus provide a powerful tool for researchers, planners and investors working in the energy field. © 2006 Elsevier Ltd. All rights reserved.*AL GAS OIL CONN, 2005, NEWS TRENDS MIDDL E, V10; DAHL C, 1994, J ENERGY DEV, P1; Deffeyes K., 2001, HUBBERTS PEAK IMPEND; *E ESCWA SDPD, 2004, UN PUBL STUD UPD CUR; ECKBO PL, 1979, ADV ECON ENERG RES, V2, P39; ELTONY MN, 1995, ENERG ECON, V17, P249, DOI 10.1016-0140-9883(95)00006-G; Eltony MN, 1996, INT J ENERG RES, V20, P957; ELTONY MN, 1997, J ENERGY DEV, V21, P293; *EN INF ADM OFF, 2005, OFF EN STAT US GOV; ERDOGAN M, 1997, J ENERGY DEV, V21, P173; FOAT KD, 1983, MODELING SUCCESS ALB, V19; KABOUDAN M, 2004, FORECASTING Q US DEM; Krichene N, 2002, ENERG ECON, V24, P557, DOI 10.1016-S0140-9883(02)00061-0; LIU XQ, 1997, FORECASTING ELECT CO; *MATLAB RES, COMP PROGR WRITT AUT; Nasr GE, 2000, ENERG ECON, V22, P627, DOI 10.1016-S0140-9883(99)00039-0; *NRCAN, 1997, CAN EN OUTL 1996 202; *OAPEC, 2003, SEC GEN 30 ANN REP; *OAPEC, 2002, SEC GEN 29 ANN REP; *OEPC, 2003, ANN STAT B; Persaud AJ, 2001, ENERG POLICY, V29, P303, DOI 10.1016-S0301-4215(00)00119-1; Siemek J, 2003, APPL ENERG, V75, P1, DOI 10.1016-S0306-2619(03)00013-8; Uhler R.S, 1979, ADV ECON ENERG RES, P9398
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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