197,347 research outputs found

    Cosmic acceleration from M theory on twisted spaces

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    doi: 10.1103/PhysRevD.72.083509In a recent paper [I. P. Neupane and D. L. Wiltshire, Phys. Lett. B 619, 201 (2005).] we have found a new class of accelerating cosmologies arising from a time-dependent compactification of classical supergravity on product spaces that include one or more geometric twists along with nontrivial curved internal spaces. With such effects, a scalar potential can have a local minimum with positive vacuum energy. The existence of such a minimum generically predicts a period of accelerated expansion in the four-dimensional Einstein conformal frame. Here we extend our knowledge of these cosmological solutions by presenting new examples and discuss the properties of the solutions in a more general setting. We also relate the known (asymptotic) solutions for multiscalar fields with exponential potentials to the accelerating solutions arising from simple (or twisted) product spaces for internal manifolds

    Dr. Duane M. Jackson, Morehouse College, July 2011

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    This video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer

    "Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.

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    "Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states. By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement. To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports

    Dispelling the Myths Behind First-author Citation Counts

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    We 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

    Dr. Glendon Swarthout

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    Hosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness

    Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses

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    Following an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied

    Intern experience at CH���M Hill, Inc.: an internship report

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    Includes author's vita"Submitted to the College of Engineering of Texas A&M University in partial fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc. during the period September 1975 through May 1976 is presented. During this nine month internship the author worked as an Engineer II in the Industrial Processes discipline of this large consulting engineering firm... The author's prime responsibility was as one of three lead design engineers on the design of a large wastewater treatment facility for a pulp mill in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design of individual treatment units and associated piping and pumping. The purpose of the project was to provide wastewater treatment capabilities that would satisfy the effluent limitations (standards) imposed upon the mill by the State of Washington Department of Ecology and the U.S. Environmental Protection Agency. The author's assignment also entailed necessary interaction with the project manager and other CH���M HILL design engineers and support staff members, the client's representatives, and representatives of two other consulting engineering firms working on the project. Thus, the internship position at CH���M HILL provided considerable experience coordinating the author's work with the work of other engineers, guiding the design and administrative efforts of a support staff, and interacting regularly with the client and other consulting firms. This broad exposure to a variety of engineering and organizational problems provided a valuable educational experience

    Policy and Strategy for Increasing Income and Food Security through Improved Crop Management of Chickpea in Rice Fallows in Asia:Summary of a NARC-ICRISAT-NRI Workshop 17-18 November 2004, Kathmandu, Nepal

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    This book consists of the following papers: Welcome address (Maske, S.L.); welcome address from ICRISAT: legumes and cereals in development and the need for effective policy change to help alleviate poverty in South Asia (Keatinge, J.D.H.); welcome address from NRI (Stevenson, P.C.); keynote address from NARC: approaches in improving pulses production in Nepal (Pathik, D.S.); keynote address from DOA: Improving production of pulses through extension programs: constraints and opportunities (Shrestha, S.S.); integrated crop management of chickpea in Nepal: past, present and future (Pande,S.; Neupane, R.K.; Stevenson, P.C.; Grazywacz,D.; Bourai,V.A.; Rao, J.N.; Kishore, G.K.); opening remarks (Kaini, B.R.); opening remarks (Chaudhary, U.); remarks by the Chief Guest (Dahal, H.N.); chairperson's remarks (Upadhyaya, H.K.); vote of thanks (Pande, S.); session 1: introductory papers: prospects of chickpea in rice-based cropping systems in Bangladesh (Uddin, M.J.; Ali, M.O.; Rahman, M.M.); Lessons learnt from participatory dissemination and uptake pathways of IPM of chickpea and lentils in Bangladesh ( Bakr, M.A.; Afzal, M.A.; Aktar, M.S.); lessons learned from farmers' participatory BGM management in India (Tripathi, H.S.); promotion of rainfed rabi cropping in rice fallows of eastern India, Bangladesh, and Nepal: an overview (Rao, J.V.D.K.; Harris, K.D.; Joshi, K.D.; Khanal, N.; Johansen, C.; Musa, A.M.); session II: scaling-up and Uptake Pathways: lessons learned from scaling up participatory variety selection: LI-BIRD experiences (Devkota, K.P.; Gyawali, S.; Tripathi, M.P.; Joshi, K.D.; Witcombe, J.R.); scaling-up of participatory variety selection in wheat in South Asia: The CIMMYT-NARS experience (Ortiz-Ferrara, G.; Joshi, A.K.; Mudwari, A.; Bhatta, M.R.; Souffian, S.; Witcombe, J.R.); the scaling-up process and outputs of participatory crop improvement in Nepal: adoption and impact (Joshi, K.D.; Devkota, K.P.; Gyawali, S.; Tripathi, M.P.; Witcombe, J.R.); experiences of scaling-up: Nepal Agricultural Research Council (Ghimire, Y.N.; Pokharel,T.P.; Khadka, R.; and Gauchan, D.); the role of APPSP: Lessons learned (Mainali, P.); session III: Commodity Seed Production and Farmers' perceptions: seed quality control mechanisms in Nepal (Lal, K.K.); chickpea cultivation: Farmers'perceptions (Aryal, B.K.); chickpea cultivation: farmers'perceptions (Shrestha, K.K.); chickpea cultivation: Farmers'perceptions (Adhikary, S.); chickpea cultivation: Farmers'perceptions (Khatri, B.); session IV: DFID-funded and Related Projects: on-farm IPM of chickpea in Nepal: dissemination, adoption and promotion, 1997-2005 (Neupane, R.K.; Joshi, M.; Pande, S.; Yadav, N.K.); the adoption of ICM technologies by poor farmers in Nepal (Stevenson, P.C.; Pande, S.; Neupane, R.K.; Chaudhary, R.N.; Bourai, V.A.; Rao, J.N.; Grzywacz, D.); alternative pest control approaches: NPV for pod borer control and its uptake in Nepal (Grzywacz, D.; Pande, S.; Khanal, N.P.; Maharjan, R.); Farmers' empowerment, soil enrichment and wealth generation through chickpea-IPM in Nepal (Bourai, V.A.; Pande, S.; Neupane, R.K.; Stevenson, P.C.); rabi cropping and promoting winter legumes in rice fallows in Nepal (Khanal, N.; Joshi, K.D.; Harris, D.); bridging the gap: Role, responsibilities and approaches to scaling-up IPM of chickpea in Nepal (Khanal, N.P. and Khanal, N.); developing positive outcomes from livelihood studies (Pound, B.); Upscaling zero tillage in rice fallow lands of the Indo-Gangetic Plains: Some experiences (Gupta, R.K.; Pande, S.); role and responsibility of the media in promoting cost-effective farmer-friendly agricultural technologies (Basnet, B.M.); agriculture and mass media in Nepal: Link or missing link? (Lamsal, Y.); country-wide extension of integrated crop management of chickpea in Nepal: lessons learned and future approaches (Stevenson, P.C.; Pande, S.; Pound, B.)

    Transition to turbulence in a qblique shock-wave/boundary-layer interaction at M=15

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    Direct numerical simulations are carried out for different forcing techniques to trigger transition during the interaction between an oblique shock-wave and a laminar boundary-layer at M = 1.5. Three forcing methods are used: a) forcing of oblique unstable modes, whose shape and behaviour are determined by the local linear stability theory, b) broadband free-stream acoustic disturbances, and c) a cold plasma flow control device. While the oblique-mode breakdown is dominant for low-amplitude forcing, long streaky structures drive the transition process in a high-amplitude disturbance environment. LES are also performed on the experimental setup by the Institute of Theoretical and Applied Mechanics (ITAM) from Novosibirsk State University with cold plasma actuation. As well as the disturbance type, the effect of Reynolds number and forcing amplitude will be investigated

    Letter from Cedrick M. Shimo to the Office of Redress Administration, June 4, 1991

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    A letter from Cedrick M. Shimo to the Office of Redress Administration arguing that John Y. Udaka is entitled to a redress payment.These materials are from box 73 and 74 of the Frank Chin Papers. The Frank Chin Papers contain personal and professional correspondence between Frank Chin and Michi Weglyn relating to particular projects on which either author was working as well as files related to the Day of Remembrance Tribute to Michi Weglyn
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