...DESIGN OF SNUBBERS FOR POWER CIRCUITS By Rudy Severns What’s a snubber? Power semiconductors are the heart of power electronics equipment. Snubbers are circuits which are placed across semiconductor devices for protection and to improve performance. Snubbers can do many things: · · · · · · Reduce or eliminate voltage or current spikes Limit dI/dt or dV/dt Shape the load line to keep it within the safe operating area (SOA) Transfer power dissipation from the switch to a resistor or a useful load Reduce total losses due to switching Reduce EMI by damping voltage and current ringing There are many different kinds of snubbers but the two most common ones are the resistorcapacitor (RC) damping network and the resistor-capacitor-diode (RCD) turn-off snubber. This application note will show you how to design these two snubbers. Switching waveforms Before getting into the design of snubbers it is important to understand the waveforms which occur naturally in power circuits. These provide both the motivation for using snubbers and the information needed for their design. There are many different types of circuits used in power converters, motor drives, lamp ballasts and other devices. Fortunately all of these different circuits have a common network and waveforms associated with the switches. Figure 1 shows four widely used circuits. All of these circuits, and in fact most power electronics circuits, have within them the same switch-diodeinductor network shown within the dotted lines...
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...Journal of Service Management Emerald Article: Exploring internal mechanisms forming customer servicescape experiences Jörg Pareigis, Per Echeverri, Bo Edvardsson Article information: To cite this document: Jörg Pareigis, Per Echeverri, Bo Edvardsson, (2012),"Exploring internal mechanisms forming customer servicescape experiences", Journal of Service Management, Vol. 23 Iss: 5 pp. 677 - 695 Permanent link to this document: http://dx.doi.org/10.1108/09564231211269838 Downloaded on: 29-11-2012 References: This document contains references to 67 other documents To copy this document: permissions@emeraldinsight.com Access to this document was granted through an Emerald subscription provided by UNIVERSITY OF GLOUCESTERSHIRE For Authors: If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service. Information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.com With over forty years' experience, Emerald Group Publishing is a leading independent publisher of global research with impact in business, society, public policy and education. In total, Emerald publishes over 275 journals and more than 130 book series, as well as an extensive range of online products and services. Emerald is both COUNTER 3 and TRANSFER compliant. The organization is a partner of the Committee on...
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...Business Strategy and the Environment Bus. Strat. Env. (2009) Published online in Wiley InterScience (www.interscience.wiley.com) DOI: 10.1002/bse.657 Corporate Social Responsibility and Sustainability Reporting on the Internet J. Emil Morhardt* Roberts Environmental Center, Claremont McKenna College, Claremont, CA, USA ABSTRACT All material related to environmental and social performance on the corporate internet sites of 454 Fortune Global 500 and Fortune 1000 companies in 25 industrial sectors was analyzed using the Pacific Sustainability Index. Maximum scores for individual sectors were 20–75 percent of the total possible, highest in the largest and most environmentally sensitive sectors and ranging generally linearly, as shown by plotting score versus rank, down to nearly zero in every sector. None of the variation in score is explained by corporate revenue in the Asian and European firms in this sample (revenues greater than about $9 billion), but there is a very weak correlation between score and revenue for American firms of this size, and a stronger one when Fortune 1000 companies (all American) with revenues smaller than this are included, suggesting that, as corporate size reaches a certain threshold, sustainability reporting becomes independent of it. Copyright © 2009 John Wiley & Sons, Ltd and ERP Environment. Received 18 November 2008; revised 26 April 2009; accepted 1 June 2009 Keywords: corporate environmental reporting; corporate environmental policy; corporate...
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...No:10, 2013 waset.org/Publication/16944 Abstract—An effective supplier selection process is very important to the success of any manufacturing organization. The main objective of supplier selection process is to reduce purchase risk, maximize overall value to the purchaser, and develop closeness and long-term relationships between buyers and suppliers in today’s competitive industrial scenario. The literature on supplier selection criteria and methods is full of various analytical and heuristic approaches. Some researchers have developed hybrid models by combining more than one type of selection methods. It is felt that supplier selection criteria and method is still a critical issue for the manufacturing industries therefore in the present paper the literature has been thoroughly reviewed and critically analyzed to address the issue. Keywords—Supplier selection, Mathematical Programming. AHP, ANP, TOPSIS, I. INTRODUCTION I N most industries, the cost of raw materials and component parts represents the largest percentage of the total product cost. For instance, in high technology firms, purchased materials and services account for up to 80% of the total product cost. Therefore, selecting the right suppliers is the key to procurement process and represents a major opportunity for companies to reduce costs across its entire supply chain. Choosing the right method for supplier selection effectively leads to a reduction in purchase risk and increases the number of JIT suppliers...
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...ork2012 - 2013 Catalog A Message from the President “Sullivan University is truly a unique and student success focused institution.” I have shared that statement with numerous groups and it simply summarizes my basic philosophy of what Sullivan is all about. When I say that Sullivan is “student success focused,” I feel as President that I owe a definition of this statement to all who are considering Sullivan University. First, Sullivan is unique among institutions of higher education with its innovative, career-first curriculum. You can earn a career diploma or certificate in a year or less and then accept employment while still being able to complete your associate, bachelor’s, master’s or doctoral degree by attending during the day, evenings, weekends, or online. Business and industry do not expand or hire new employees only in May or June each year. Yet most institutions of higher education operate on a nine-month school year with almost everyone graduating in May. We remained focused on your success and education, and continue to offer our students the opportunity to begin classes or to graduate four times a year with our flexible, year-round full-time schedule of classes. If you really want to attend a school where your needs (your real needs) come first, consider Sullivan University. I believe we can help you exceed your expectations. Since words cannot fully describe the atmosphere at Sullivan University, please accept my personal invitation to visit and experience...
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...COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE EIGHTH EDITION William Stallings Prentice Hall Upper Saddle River, NJ 07458 Library of Congress Cataloging-in-Publication Data On File Vice President and Editorial Director: Marcia J. Horton Editor-in-Chief: Michael Hirsch Executive Editor: Tracy Dunkelberger Associate Editor: Melinda Haggerty Marketing Manager: Erin Davis Senior Managing Editor: Scott Disanno Production Editor: Rose Kernan Operations Specialist: Lisa McDowell Art Director: Kenny Beck Cover Design: Kristine Carney Director, Image Resource Center: Melinda Patelli Manager, Rights and Permissions: Zina Arabia Manager, Visual Research: Beth Brenzel Manager, Cover Visual Research & Permissions: Karen Sanatar Composition: Rakesh Poddar, Aptara®, Inc. Cover Image: Picturegarden /Image Bank /Getty Images, Inc. Copyright © 2010, 2006 by Pearson Education, Inc., Upper Saddle River, New Jersey, 07458. Pearson Prentice Hall. All rights reserved. Printed in the United States of America. This publication is protected by Copyright and permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department. Pearson Prentice Hall™ is a trademark of Pearson Education, Inc. Pearson® is a registered trademark of...
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...BELHAVEN UNIVERSITY Jackson, Mississippi A CHRISTIAN UNIVERSITY OF LIBERAL ARTS AND SCIENCES FOUNDED IN 1883 CATALOGUE 2014-2015 EFFECTIVE JUNE 1, 2014 Directory of Communication Mailing Address: Belhaven University 1500 Peachtree St. Jackson, MS 39202 Belhaven University 535 Chestnut St. Suite 100 Chattanooga, TN 37402 Belhaven University 7111 South Crest Parkway Southaven, MS 38671 Belhaven University – LeFleur 4780 I-55 North Suite 125 Jackson, MS 39211 Belhaven University 15115 Park Row Suite 175 Houston, TX 77084 Belhaven University Online 1500 Peachtree St. Box 279 Jackson, MS 39202 Belhaven University 1790 Kirby Parkway Suite 100 Memphis, TN 38138 Belhaven University 4151 Ashford Dunwoody Rd. Suite 130 Atlanta, GA 30319 Belhaven University 5200 Vineland Rd. Suite 100 Orlando, FL 32811 Traditional Admission Adult and Graduate Studies Admission – Jackson Atlanta Chattanooga Desoto Houston Memphis Orlando Alumni Relations/Development Belhaven Fax Business Office Campus Operations Integrated Marketing Registrar Student Life Security Student Financial Planning Student Development Online Admission Online Student Services (601) 968-5940 or (800) 960-5940 (601) 968-5988 or Fax (601) 352-7640 (404) 425-5590 or Fax (404) 425-5869 (423) 265-7784 or Fax (423) 265-2703 (622) 469-5387 (281) 579-9977 or Fax (281) 579-0275 (901) 896-0184 or Fax (901) 888-0771 (407) 804-1424 or Fax (407) 367-3333 (601) 968-5980 (601) 968-9998 (601) 968-5901 (601) 968-5904 (601) 968-5930 (601) 968-5922...
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...206-009-1 MICHAEL J. ENRIGHT CHINA’S EXPORTS: AN UNSTOPPABLE COMPETITOR? According to press reports, in early 2005, the US and Europe were being inundated with Chinese garment exports following the removal of quotas in January. In some categories, imports from China were several hundred per cent higher than in the previous year. In the US, politicians and trade unions blamed China for the loss of 380,000 jobs in the textile and garment industries since January 2001, a third of its employees. In Europe, garment and textile centres that had existed for hundreds of years found themselves under threat. In the developing world, country after country feared that China’s emergence would cripple its own garment and textile industries. Garments and textiles reflected a much wider trend. In one labour-intensive industry after another, the “China price” seemed impossible to match. China had become a dominant producer in garments, textiles, footwear, travel goods, leather goods, plastic products, bicycles, simple housewares, pens and pencils, cutlery, radios, phones, computers, DVD players, shipping containers, and many other products. In the US, China was viewed as a major reason for the loss of 2.7 million manufacturing jobs from 2001 to 2004.1 More than 300,000 were reported to have lost jobs in Mexico’s factories due to competition from China. China had supplanted Japan as the world’s third largest exporter in 2004 with US$593 billion (an 82% increase over two...
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...STATE UNIVERSITY OF NEW YORK AT ALBANY Emanuel Medical Center Situational & Decision Analysis James T. Onisk 4/29/2012 Table of Contents Situational Analysis Appendices External Analysis Appendix A: S.W.O.T. Analysis Appendix B: External Trend/Issue Analysis Appendix C: Environmental Trends/Issues Plot Appendix D: Stakeholder Map Appendix E: Service Area Profile Appendix F: Service Area Structural Analysis Appendix G: Service Area Competitor Analysis Appendix H: Critical Success Factor Analysis Appendix I: Mapping Competitors Appendix J: Synthesizing the Analysis Internal Analysis Appendix K: Financial Analysis Appendix L: Value Chain Strengths and Weaknesses Appendix M: Value Chain Competitive Advantages Relative to Strengths Appendix N: Value Chain Competitive Disadvantages Relative to Weaknesses Appendix O: Strategic Implications of Strengths and Weaknesses References Decision Analysis Decision Analysis Appendices Appendix P: Directional Strategies Appendix Q: Adaptive Strategies Appendix R: Market Entry Strategies Appendix S: Strategic Positioning Appendix T: Value-Chain Funcations References 1 2-11 12-13 14-17 18-29 30-36 37-50 51-60 61-66 67 I-VII 68-74 75-81 82-86 87-91 92-95 96-105 VIII-XV 106-109 110-122 123-125 126-128 129-135 136 Issue Statement Emanuel Medical Center (EMC) is encountering tremendous financial troubles as it struggles to remain open as an independent general acute care hospital. Changes in federal regulations such as the implementation...
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...OFFICIAL CATALOG This Catalog contains information, policies, procedures, regulations and requirements that were correct at the time of publication and are subject to the terms and conditions of the Enrollment Agreement entered into between the Student and ECPI University. In keeping with the educational mission of the University, the information, policies, procedures, regulations and requirements contained herein are continually being reviewed, changed and updated. Consequently, this document cannot be considered binding. Students are responsible for keeping informed of official policies and meeting all relevant requirements. When required changes to the Catalog occur, they will be communicated through catalog inserts and other means until a revised edition of the Catalog is published. The policies in this Catalog have been approved under the authority of the ECPI University Board of Trustees and, therefore, constitute official University policy. Students should become familiar with the policies in this Catalog. These policies outline both student rights and student responsibilities. The University reserves the right and authority at any time to alter any or all of the statements contained herein, to modify the requirements for admission and graduation, to change or discontinue programs of study, to amend any regulation or policy affecting the student body, to increase tuition and fees, to deny admission, to revoke an offer of admission and to dismiss from the...
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...Citation: 18 Duke J. Comp. & Int'l L. 151 2007-2008 Content downloaded/printed from HeinOnline (http://heinonline.org) Thu Oct 17 14:15:18 2013 -- Your use of this HeinOnline PDF indicates your acceptance of HeinOnline's Terms and Conditions of the license agreement available at http://heinonline.org/HOL/License -- The search text of this PDF is generated from uncorrected OCR text. -- To obtain permission to use this article beyond the scope of your HeinOnline license, please use: https://www.copyright.com/ccc/basicSearch.do? &operation=go&searchType=0 &lastSearch=simple&all=on&titleOrStdNo=1053-6736 EXCHANGE CONSOLIDATION AND MODELS OF INTERNATIONAL SECURITIES REGULATION Bo HARVEY* INTRODUCTION In recent years, globalization and a growing demand for capital have increased competition within the capital markets for the business of issuers and investors.! This has led stock and derivatives exchanges to change their business models from mutual business entities, run for the benefit of their members, to demutualized corporations, run for the benefit of shareholders Consequently, as for-profit corporations, exchanges have looked to position themselves more competitively in an internationalized securities market. Part of such positioning has included increasing exchange alliances and acquisitions on a global scale. This is highlighted by the recent merger between the New York Stock Exchange (NYSE) and Euronext (the new entity to be known as NYSE-Euronext). With financial markets...
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...HANOI UNIVERSITY OF INDUSTRY FACULTY OF FOREIGN LANGUAGES ---------- GRADUATION PAPER B.A DEGREE IN ENGLISH A CONTRASTIVE ANALYSIS BETWEEN NOMINAL CLAUSE IN ENGLISH AND VIETNAMESE EQUIVALENTS Supervisor : Nguyễn Thị Hưởng, MA Student : Đặng Thị Thơi Student ID : 0541180107 Group : ĐHTA2 – Intake 5 Hanoi, May, 2014 DECLARATION I certify that no part of the report has been copied or reproduced by me from any other person’s work without acknowledgement and that the report is originally written by me under strict guidance of my supervisor. Date of submitted: May 05, 2014 StudentĐặng Thị Thơi | SupervisorNguyễn Thị Hưởng | | | ACKNOWLEDGEMENTS For the accomplishment of this study, I have received a great deal of support and assistance from many dedicated individuals. First of all, I would like to express my faithful and deepest thanks to my supervisor, Mrs. Nguyen Thi Huong (M.A) for her useful references, excellent advices and readiness during my study process. Secondly, I would like to show my gratitude to all teachers at Faculty of Foreign Language, Hanoi University of Industry for their support during the time of the course. I want to thank all linguists and grammarians whose researchers have been quoted in this study. My thanks also go to my beloved family and my friends who always stand by my side and encourage me from my reparation until the completion...
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...11 CONNECTION OF ELECTRICAL INSTALLATIONS TO THE POWER STATIONS 13 COMMISSIONING OF ELECTRICAL INSTALLATIONS 14 CHAPTER 1.2 POWER SUPPLY AND POWER SYSTEMS 14 SCOPE, DEFINITIONS 14 GENERAL REQUIREMENTS 14 CATEGORIES OF POWER CONSUMING DEVICES AND RELIABILITY OF POWER SUPPLY 15 VOLTAGE LEVELS AND CONTROLS, REACTIVE POWER COMPENSATION 16 CHAPTER 1.3 SELECTION OF CONDUCTORS: HEATING, CURRENT DENSITY AND CORONA DISCHARGE CONDITIONS 16 SCOPE 16 SELECTION OF CROSS-SECTION OF CONDUCTORS: HEATING 17 MAXUIMUM CONTINUOUS CURRENTS FOR WIRES, CORDS AND CABLES IN RUBBER OR PLASTIC INSULATION 18 MAXIMUM CONTINUOUS CURRENTS FOR CABLES IN IMPREGNATED PAPER INSULATION 22 MAXIMUM CONTINUOUS CURRENTS FOR BARE WIRES AND BUSES 29 SELECTING CROSS-SECTION OF CONDUCTOR PER THE ECONOMIC CURRENT DENSITY 33 CONDUCTOR CORONA AND RADIO FREQUENCY TESTS 36 CHAPTER 1.4 SELECTION OF ELECTRICAL EQUIPMENT AND CONDUCTORS FOR SHORT CIRCUIT CONDITIONS 36 SCOPE 36 GENERAL REQUIREMENTS 36 IDENTIFICATION OF SHORT-CIRCUIT CURRENTS FOR SELECTION OF EQUIPMENT AND CONDUCTORS...
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...Production and Operations Management –MGT613 INTRODUCTION TO PRODUCTION AND OPERATIONS MANAGEMENT VU Lesson 01 POMA Previously called Production Management Then Production and Operations Management Often called Operations Management Should not be confused with Operations Research or Production Management which are the domain of Mechanical and Industrial Engineering. THE COURSE CONTENT Tentative Course Content Units of Learning wise Unit I ( Introduction and Productivity, Strategy and Competitiveness) Unit II ( Forecasting) Unit III ( Design of Production Systems) Unit III ( Quality) Unit V ( Operating and Controlling the System) Tentative Course Content Lecture wise Unit I ( 5 Lectures) Unit II (3 Lectures) Unit III ( 12 Lectures) Unit III ( 10 Lectures) Unit V ( 15 Lectures) History of Management Frederick Taylor and Gilbreths (Lillian and Frank Gilbreth) are pioneers of transforming management to scientific domain. Borrows a lot of information from Engineering and Management to give an overall bigger picture of operating and managing any organization. Difference between Operations Management and Research OR relies on mathematical modeling and OM relies on practical scenarios/industrial cases. OR domain and tool of Engineers while OM is considered to be one of the critical tools of Managers. OR considered more powerful to improve the whole system where as OM can be applied to a part of the system. OR relies on mathematical modeling while OM relies on practical scenarios/industrial...
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...California Law Review Volume 57 | Issue 1 Article 1 January 1969 The Legal Roles of Shareholders and Management in Modern Corporate Decisionmaking Melvin Aaron Eisenberg Follow this and additional works at: http://scholarship.law.berkeley.edu/californialawreview Recommended Citation Melvin Aaron Eisenberg, The Legal Roles of Shareholders and Management in Modern Corporate Decisionmaking, 57 Cal. L. Rev. 1 (1969). Available at: http://scholarship.law.berkeley.edu/californialawreview/vol57/iss1/1 This Article is brought to you for free and open access by the California Law Review at Berkeley Law Scholarship Repository. It has been accepted for inclusion in California Law Review by an authorized administrator of Berkeley Law Scholarship Repository. For more information, please contact jcera@law.berkeley.edu. California Law Review VOL. 57 JANUARY 1969 Copyright © 1969 by California Law Review, Inc. No. 1 The Legal Roles of Shareholders and Management in Modern Corporate Decisionmaking Melvin Aron Lisenberg* TABLE OF CONTENTS I A GENERAL THEORY ...... A. ... ............... 4 A NORMATIVE MODEL OF'VOTING RIGHTS IN PRIVATELY HELD CORPORATIONS ....... ................ A NORMATIVE MODEL OF VOTING RIGHTS IN PUBLICLY HELD ................ CORPORATIONS ....... 7 15 B. . ........ 1. Considerations of Public Policy .. (a) "Shareholder democracy ". . .. ........ ... . ......... (b) Client-group participation .. (c) Managerialism .......
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