...Chapter 1 Introduction 1.1 Background AC induction motors are being applied today to a wider range of applications requiring variable speed as they are the leading elements to convert electrical energy into mechanical energy. They are being used as actuators in various industrial processes, robotics, house hold appliances (generally single phase induction motor) and other similar applications. The reason for its day by day increasing popularity can be primarily attributed to its robust construction, simplicity in design and cost effectiveness. Also, induction motors are proved to be more reliable than DC motor. Generally, variable speed drives for induction motor requires wide operating range of speed and fast torque response, regardless of the load variations. Also, the conventional controllers have to linearize the non-linear system of induction motor in order to calculate the parameters, which is almost impossible to obtain a perfect non-linear model. Hence the values of the parameters that are obtained from it are thereby approximate. This leads us to more advanced control methods to meet the real demand. To overcome the complexities of conventional controllers, fuzzy logic controller have been implemented in many motor applications. A Fuzzy Logic Controller (FLC) is incorporated for combination with Phase Locked Loop (PLL) for precise and robust speed of induction motor. The fuzzy logic controller is used to pull the motor speed into the locking range of...
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...REGENT UNIVERSITY My Journey into the Future A Personal Essay Foresight 2005 Conference - September Dr. Todd M. Johnson Center for the Study of Global Christianity, Hamilton, MA From September 22-24, 2005, the School of Leadership Studies hosted Dr. Todd Johnson on campus at Regent University, for the third annual futures conference for Christian leaders. This essay by Johnson was circulated to participants beforehand. We encourage you to join us next year for our annual Foresight conference, as we hear from top futurists from the both the U.S. and around the world. Todd M. Johnson, Ph.D., is the director of the Center for the Study of Global Christianity at Gordon-Conwell Theological Seminary in South Hamilton, MA. He is the co-author of World Christian Encyclopedia (WCE), Second Edition, released in 2001 by Oxford University Press. Since 1989, Dr. Johnson has been a full-time researcher on the empirical status of global Christianity, most recently as director of the World Evangelization Research Center (WERC) in Richmond, Virginia. He has also served with Youth With A Mission (YWAM) since 1978 and has performed various ministry tasks in over 30 countries, including relief work among Cambodian refugees in Thailand, inner city work in San Francisco, evangelism in villages in Guatemala and field-based research in Asia. He is co-founder of the Christian Futures Network, a professional member of the World Future Society and a member of the American Academy...
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... A Skeptic's Guide to Computer Models by John D. Sterman This article was written by Dr. John D. Sterman, Director of the MIT System Dynamics Group and Professor of Management Science at the Sloan School of Management, Massachusetts Institute of Technology, 50 Memorial Drive, Cambridge, MA 02139, USA; email: jsterman@mit.edu. Copyright © John D. Sterman, 1988, 1991. All rights reserved. This paper is reprinted from Sterman, J. D. (1991). A Skeptic's Guide to Computer Models. In Barney, G. O. et al. (eds.), Managing a Nation: The Microcomputer Software Catalog. Boulder, CO: Westview Press, 209-229. An earlier version of this paper also appeared in Foresight and National Decisions: The Horseman and the Bureaucrat (Grant 1988). A S KEPTIC'S GUIDE TO COMPUTER MODELS 2 The Inevitability of Using Models........................................................................3 Mental and Computer Models..............................................................................2 The Importance of Purpose..................................................................................3 Two Kinds of Models: Optimization Versus Simulation and Econometrics.......4 Optimization.............................................................................................4 Limitations of Optimization..........................................................5 When To Use Optimization....................
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...management and policy decisions. MGI research combines the disciplines of economics and management, employing the analytical tools of economics with the insights of business leaders. Our “micro-to-macro” methodology examines microeconomic industry trends to better understand the broad macroeconomic forces affecting business strategy and public policy. MGI’s in-depth reports have covered more than 20 countries and 30 industries. Current research focuses on six themes: productivity and growth; natural resources; labor markets; the evolution of global financial markets; the economic impact of technology and innovation; and urbanization. Recent reports have assessed job creation, resource productivity, cities of the future, the economic impact of the Internet, and the future of manufacturing. MGI is led by two McKinsey & Company directors: Richard Dobbs and James Manyika. Michael Chui, Susan Lund, and Jaana Remes serve as MGI principals. Project teams are led by the MGI principals and a group of senior fellows, and include consultants from McKinsey & Company’s offices around the world. These teams draw on McKinsey & Company’s global network of partners and industry and management experts. In addition, leading economists, including Nobel laureates, act as research advisers. The partners of McKinsey & Company fund MGI’s research; it is not commissioned by any business, government, or other institution. For further information about...
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...Helping Your Child Learn Science U.S. Department of Education Margaret Spellings Secretary First published in September 1992. Revised in 2004 and 2005. This booklet is in the public domain. Authorization to reproduce it in whole or in part for educational purposes is granted. While permission to reprint this publication is not necessary, the citation should be: U.S. Department of Education, Office of Communications and Outreach, Helping Your Child Learn Science, Washington, D.C., 2005. To order copies of this publication in English or Spanish, write to: ED Pubs Education Publications Center U.S. Department of Education P.O. Box 1398 Jessup, MD 20794-1398; or fax your request to: (301) 470-1244; or e-mail your request to: edpubs@inet.ed.gov. or call in your request toll-free: 1-877-433-7827 (1-877-4-ED-PUBS). If 877 is not yet available in your area, call 1-800-872-5327 (1-800-USA-LEARN). Those who use a telecommunications device for the deaf (TDD) or a teletypewriter (TTY), should call 1-800-437-0833. or order online at: www.edpubs.org/webstore/Content/search.asp This publication is also available on the Department’s Web site at: www.ed.gov/parents/academic/help/hyc.html On request, this publication is available in alternate formats, such as Braille, large print, audiotape, or computer diskette. For more information, please contact the Department’s Alternate Format Center at (202) 260-9895 or (202) 205-0818. Children’s books and magazines are mentioned in this booklet...
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...focusing on selected natural and environmental resources: land use, water use, local pollution, deforestation and climate change. The author also reviews selected recent macro and micro perspectives. The new macro perspective introduces the environment-income relationship and examines the role of population growth and density in mediating this relationship. The new micro perspective introduces the close relationship between poverty and environmental degradation, also examining the roles of gender in decision-making and the role of children as economic assets in fertility decisions. Finally, the author carries out a comparative assessment of the approaches and methods employed in the literature to explain the wide variation in findings and predictions. This literature review demonstrates...
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...focusing on selected natural and environmental resources: land use, water use, local pollution, deforestation and climate change. The author also reviews selected recent macro and micro perspectives. The new macro perspective introduces the environment-income relationship and examines the role of population growth and density in mediating this relationship. The new micro perspective introduces the close relationship between poverty and environmental degradation, also examining the roles of gender in decision-making and the role of children as economic assets in fertility decisions. Finally, the author carries out a comparative assessment of the approaches and methods employed in the literature to explain the wide variation in findings and predictions. This literature review...
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...ardsRunning Head: SAMPLE APA PAPER: PSYCHOTHERAPY AND THE DECEASED The running head is now used as the header and it is positioned flush left (APA, 2009, pp. 229-230) 1 A Sample APA Paper: The Efficacy of Psychotherapeutic Interventions with Profoundly Deceased Patients Jeff Aspelmeier Radford University Author note now goes on title page and not after footnotes at end of paper (APA, 2009, pp. 24-25). Author Note Many parts of this paper were unabashedly ripped off from course materials developed by Dr. John Rosenkoetter that were presented to me when I took research methods with John (we will not discuss how long ago that was). The absurdity of the content contained in the paper is entirely my fault, the underlying educational value is largely John’s. The fact that I have stolen from him is a tribute to the quality of his teaching. Thank you Dr. Rosenkoetter! SAMPLE APA PAPER: PSYCHOTHERAPY AND THE DECEASED 2 Level 1 headings are The words Running head: are excluded Centered and Bold (APA, Abstract from this point on (APA, 2009, pp. 41) 2009, p. 62) The Abstract is a one paragraph summary of the report. Write in block style; the first line is not indented. Depending on the journal there the word limit ranges from 150 to 250 words. Describe Abstract Word limit will depend on the problem under investigation in one sentence. Describe the participants’/subjects’ pertinent which journal you submit to (APA, 2009, p. 27) characteristics (number, type, age, sex, and for...
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...Application of Game Theory In Biman Bangladesh Airlines Application of Game Theory In Biman Bangladesh Airlines Submitted to, XXX Lecturer Department of YYY University of ZZZ Submitted by, Group “Oracles” 17th Batch B section Date of Submission: 19th March, 2012 Dated: 19th April, 201 XXX Lecturer Department of YYY University of ZZZ Subject: Solicitation for acceptance of the Report on “Application of Game theory in Biman Bangladesh Airlines”. Dear Sir, We are very much pleased to submit the report on “Application of Game theory in Biman Bangladesh Airlines” which provides us the opportunity of practicing our theoretical knowledge. Though it is our first such type of report but all the works presented here is done with utmost sincerely and honesty. We have tried our best to make this report holistic and informative enough. Besides this, there may be shortcomings. We would be grateful if you consider those from excusable point. Thanking you Sincerely yours The group “Oracles” Batch-17th Section: B ACKNOWLEDGEMENT For the completion of this we cannot deserve all praise. First of all we like to thank the Almighty Allah who gives us the opportunity to prepare this project successfully. We do believe that it is his blessings on us that we have completed this report in spite of some initial obstacles. We are very thankful to our course instructor XXX. Under his caring guidance we found the completion...
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...1 ESSAYS ON SUSTAINABILITY Thirteen Challenging Essays for Earthlings By Peter E. Black, 2008 Wheels and Water .......................................................page 1 Water and Humans on Planet Earth ................................... 2 Climate, Weather, and Global Warming ............................. 3 A Catastrophic Loss of Species ......................................... 4 The Naked Truth................................................................... 5 Asymmetrical Resource Distribution ................................. 6 Stormwater and Groundwater Runoff ................................ 7 Economy, Energy, Environment ......................................... 8 Drill in the ANWR? No Way! ............................................... 9 The Wonder of Water ......................................................... 10 Buffering Sands of Time.................................................... 11 Ecology and Civilization .................................................... 12 With a Bang, not a Whimper.............................................. 13 © 2008 Peter E. Black, PhD (US Copyright Registration TXu 1-580-484, July 13, 2008 as “Conservation is the Cornerstone of Sustainability”) Distinguished Teaching Professor of Water and Related Land Resources, Emeritus, State University of New York, College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210 peblack@esf.edu and www.watershedhydrology.com Essays on Sustainability Thirteen Challenging...
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...Essays in Banking and Risk Management by James Ian Vickery B.Ec.(Hons), University of New South Wales (1997) Submitted to the Department of Economics in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Economics at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY September 2004 c ° James Ian Vickery, MMIV. All rights reserved. The author hereby grants to Massachusetts Institute of Technology permission to reproduce and to distribute copies of this thesis document in whole or in part. Signature of Author . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Department of Economics August 15 2004 Certified by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ricardo Caballero Ford International Professor of Economics Thesis Supervisor Accepted by. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peter Temin Elisha Gray II Professor of Economics Chairperson, Department Committee on Graduate Studies Essays in Banking and Risk Management by James Ian Vickery Submitted to the Department of Economics on August 15 2004, in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Economics Abstract This thesis consists of...
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...and be able to do-was lacking. Standards are a bold initiative. Through content standards in the core subjects, California began to redefine the state’s role in public education. For the first time, the knowledge and skills that students needed to acquire were explicitly stated for the most part by grade level, although science standards at the high school level were organized by discipline. The standards are rigorous. Students who master this content are on a par with those in the best educational systems in other states and nations. The content is attainable by all students, given sufficient time, except for those few who have severe disabilities. We continue to regard the standards as firm but not unyielding; they will be modified in future years to reflect new research and scholarship. Standards describe what to teach, not how to teach it. Standards-based education maintains California’s tradition of respect for local control of schools. To help students achieve at high levels, local...
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...Fuzzy Control Kevin M. Passino Department of Electrical Engineering The Ohio State University Stephen Yurkovich Department of Electrical Engineering The Ohio State University An Imprint of Addison-Wesley Longman, Inc. Menlo Park, California • Reading, Massachusetts Don Mills, Ontaria • Sydney • Bonn • Harlow, England • Berkeley, California • Amsterdam • Mexico City ii Assistant Editor: Laura Cheu Editorial Assistant: Royden Tonomura Senior Production Editor: Teri Hyde Marketing Manager: Rob Merino Manufacturing Supervisor: Janet Weaver Art and Design Manager: Kevin Berry Cover Design: Yvo Riezebos (technical drawing by K. Passino) Text Design: Peter Vacek Design Macro Writer: William Erik Baxter Copyeditor: Brian Jones Proofreader: Holly McLean-Aldis Copyright c 1998 Addison Wesley Longman, Inc. All rights reserved. No part of this publication may be reproduced, or stored in a database or retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of America. Printed simultaneously in Canada. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and AddisonWesley was aware of a trademark claim, the designations have been printed in initial caps or in all caps. MATLAB is a registered trademark of The MathWorks...
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...Stock Picking Skills of SEC Employees Shivaram Rajgopal Schaefer Chaired Professor of Accounting Goizueta Business School Emory University 1300 Clifton Road NE, Atlanta, GA 30030 Email: shivaram.rajgopal@emory.edu Roger M. White PhD Student in Accounting J. Mack Robinson School of Business Georgia State University Email: rwhite42@gsu.edu Preliminary and incomplete Comments welcome This draft: February 18, 2014 Abstract: We use a new data set obtained via a Freedom of Information Act request to investigate the trading strategies of the employees of the Securities and Exchange Commission (SEC). We find that a hedge portfolio that goes long on SEC employees’ buys and short on SEC employees’ sells earns positive and economically significant abnormal returns of (i) about 4% per year for all securities in general; and (ii) about 8.5% in U.S. common stocks in particular. The abnormal returns stem not from the buys but from the sale of stock ahead of a decline in stock prices. We find that at least some of these SEC employee trading profits are information based, as they tend to divest (i) in the run-up to SEC enforcement actions; and (ii) in the interim period between a corporate insider’s paper-based filing of the sale of restricted stock with the SEC and the appearance of the electronic record of such sale online on EDGAR. These results raise questions about potential rent seeking activities of the regulator’s employees. We acknowledge financial assistance from our respective...
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...Bar-Cohen Jet Propulsion Lab, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109-8099, USA E-mail: yosi@jpl.nasa.gov Received 7 November 2005 Accepted for publication 7 March 2006 Published 27 April 2006 Online at stacks.iop.org/BB/1/P1 Abstract Evolution has resolved many of nature’s challenges leading to lasting solutions. Nature has always inspired human achievements and has led to effective materials, structures, tools, mechanisms, processes, algorithms, methods, systems, and many other benefits (Bar-Cohen Y (ed) 2005 Biomimetics—Biologically Inspired Technologies (Boca Raton, FL: CRC Press) pp 1–552). This field, which is known as biomimetics, offers enormous potential for inspiring new capabilities for exciting future technologies. There are numerous examples of biomimetic successes that involve making simple copies, such as the use of fins for swimming. Others examples involved greater mimicking complexity including the mastery of flying that became possible only after the principles of aerodynamics were better understood. Some commercial implementations of biomimetics, including robotic toys and movie subjects, are increasingly appearing and behaving like living creatures. More substantial benefits of biomimetics include the development of prosthetics that closely mimic real limbs and sensory-enhancing microchips that are interfaced with the brain to assist in hearing, seeing and controlling instruments. A review is given of selected areas that were inspired...
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