Breitenstein Development of a Flapping Wing Mechanism Semester Project Autonomous Systems Lab (ASL) Swiss Federal Institute of Technology (ETH) Zurich Supervision Dr. Samir Bouabdallah‚ Stefan Leutenegger and Prof. Dr. Roland Siegwart Spring Semester 2009 Contents Abstract Acknowledgements 1 Introduction 2 Review 2.1 Aerodynamics of flapping wings . 2.1.1 Wagner Effect . . . . . . . 2.1.2 Leading edge vortex . . . 2.1.3 Clap and fling mechanism 2.1.4 Rotational lift . . . . . . . 2.1.5
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Abstract To understand Fromm’s mechanisms of escape—authoritarianism‚ destructiveness‚ and automaton conformity—one must obtain an understanding of Fromm basic premise for humanity and society which is overall positive. Reviewing the mechanisms of escape can assist one in understanding how an individual can be ruled by another‚ take one’s own life‚ or become lost in society. Fromm’s book‚ Escape from Freedom‚ can be used to teach individuals and society‚ as a whole‚ how to better understand one
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23 November 2009 Business Environments Assignment #1 Explain the workings of market mechanism. What can cause markets to fail? Economists have to deal with a range of economic problems when studying an economy. But the basic economic problem is: “Scarce resources in relation to unlimited wants” – Bamford‚ 2001 Because there are unlimited wants and limited resources‚ societies have to confront three basic questions What to produce? Everything cannot be produced so we need to decide
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Types of Information Security Controls Harold F. Tipton Security is generally defined as the freedom from danger or as the condition of safety. Computer security‚ specifically‚ is the protection of data in a system against unauthorized disclosure‚ modification‚ or destruction and protection of the computer system itself against unauthorized use‚ modification‚ or denial of service. Because certain computer security controls inhibit productivity‚ security is typically a compromise toward which security
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The mechanism behind questionnaire design The questionnaire has been designed to determine if a satisfactory level of customer service is being achieved within the Devonshire spa hair salon booking and reception areas. Using a combination of quantitative and qualitative questioning techniques the questionnaire hopes to gain varied feedback from the clientele as Sherman and Webb (1988) as cited in Blaxter et al (2001‚ p.64) state; “Qualitative implies a direct concern with experience as it
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09/07/2012 Freud’s Defense Mechanisms Juan E. Choque 1. - Acting Out To behave in a way similar to when you act by impulse or natural instinct. An example is drug use because when people are high‚ they act like if that was normal for them‚ like if that was natural. 2. - Altruism It’s when you are worried / concerned about other’s well-being more than yours. An example is when you do something for your friend that you know is going to help him or make him better‚ but you might get in trouble or
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Causes and mechanisms of water resources degradation Logging of forest Logging is the cutting‚ skidding‚ on-site processing‚ and loading of trees or logs onto trucks. Logging and the subsequent denudation of the forest cover increases surface runoff since there is less oppurtunity for rainwater to sink into the ground. .Retarded or supressed infiltration accelerates overland flow production‚hastening delivery of rainwater into streams and rivers‚ the oftentimes the water ends up as floodwater
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The defence mechanisms of Projection and transference. Sigmund Freud first identified the psychological process of transference and projection and brought it into what is now modern day psychotherapy. He noticed that people had strong feelings and fantasies about him that had no basis in reality. Transference has become a more modern concept since Freud. In fact‚ transference is actually something that happens in life - and not just in psychotherapy. What is Transference? During transference
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4.2.6 Robert’s Mechanism Fig. 4.13: The Robert’s Mechanism Robert‘s linkage is another four-bar approximate straight line generator mechanism with coupler point C. Good results can be obtained with construction parameters d = 1‚ b = 0.538 ‚ a = c = 0.530 e = f = 1.04. Robert‘s mechanism generates a curve which has a linear part parallel to the base link. Links and coupler curve are symmetric.[20] The limitation of this mechanism is that the straight line path is very short
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Trans-Cinnamic Acid Christopher B. Martin CHEM 3411 1 Mechanism of Bromine Addition to Alkenes Understanding the chemical mechanism (order of bonds broken and made as well as intermediates formed) has a great value in chemical synthesis. The chemical mechanism of a reaction will influence the rate of the reaction‚ the stereochemistry of the product(s)‚ and the extent of possible undesired side reactions. Organic reaction mechanisms investigate the path towards a desired product and not just
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