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Ergonomics, also known as Human Factors, is a recent scientific discipline, curiously with a well‐defined and official date and place of birth, July 12, 1949, in England. However the term Ergonomics, was proposed in 1857, by the Polish philosopher and naturalist Wojciech Jastrzebowski and fell into oblivion for nearly a century. The word Ergonomics results from joining the Greek words ergon meaning ʺworkʺ and nomos meaning ʺnatural lawsʺ, and conveys the concern of understanding the relationships between humans and their work environment | ERGONOMICS A SYSTEMS APPROACH ERGONOMICS -A SYSTEMS APPROACH Edited by Isabel L. Nunes Ergonomics - A Systems Approach Edited by Isabel L. Nunes Published by InTech Janeza Trdine 9 51000 Rijeka Croatia Copyright 2012 InTech All chapters are Open Access distributed under the Creative Commons Attribution 3.0 license which allows users to download copy and build upon published articles even for commercial purposes as long as the author and publisher are properly credited which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech authors have the right to republish it in whole or part in any publication of which they are the author and to make other personal use of the work. Any republication referencing or personal use of the work must explicitly identify the original source. As for readers this license allows users to download copy and build upon published chapters even for commercial purposes as long as the author and publisher are properly credited which ensures maximum dissemination and a wider impact of our publications. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials instructions methods or ideas contained in the book. Publishing Process Manager Martina Blecic Technical Editor Teodora Smiljanic Cover Designer InTech Design Team First published April 2012 Printed in Croatia A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from orders@intechopen.com Ergonomics - A Systems Approach Edited by Isabel L. Nunes p. cm. ISBN .