491 research outputs found

    Formal and non-formal approaches to the notion of "Risk" : a historical perspective

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    The paper will focus on the early texts of Galileo Galilei (1613~1623) and Daniel Bernoulli (1738) as examples of pure combinatorical analysis and perspectively considerations within the mathematical discipline of probability theory. It is argued that Bernoulli's approach needed to be developed further in order to achieve a successful and satisfactory theory of risk. In modern economy the need for a proper definition of a notion of risk is seen and currently discussed within the frame of ISO standards. But as already mentioned this interest is mainly owed to the governmental demands of the Basel II and Solvency standards and therefore an external demand. On the other hand an intrinsic understanding of the meaning of risk, as could be provided by a conclusive theory, could lead to a better success in modelling various risks and help to achieve better prognosis

    Symmetrie

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    Computational morphogenesis of free form shells: Filter methods to create alternative solutions

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    p. 536-547Actual trends in numerical shape optimal design of structures deal with handling of very large dimensions of design space. The goal is to allowing as much design freedom as possible while considerably reducing the modelling effort. As a consequence, several technical problems have to be solved to get procedures which are robust, easy to use and which can handle many design parameters efficiently. The paper briefly discusses several of the most important aspects in this context and presents many illustrative examples which show typical applications for the design of light weight shell and membrane structures.Bletzinger, K.; Firi, M.; Linhard, J.; Wüchner, R. (2009). Computational morphogenesis of free form shells: Filter methods to create alternative solutions. Editorial Universitat Politècnica de València. http://hdl.handle.net/10251/654

    Symmetry theoretical approach to the analysis of complex systems

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    Der Zusammenhang fundamentaler Symmetriestrukturen mit dem Zugang moderner Naturwissenschaften zur abstrakten Beschreibung komplexer Systeme wird dargestellt. Beginnend mit der geometrischen Symmetrie der Schneeflocke und dem symmetrietheoretischen Ansatz in Platons Timaios wird der symmetrietheoretische Ansatz moderner Naturwissenschaften exemplifiziert und analysiert. Die mathematische Abstraktion wird als reduktionistische Methode verstanden

    [Tagungsbericht] : Naturwissenschaftliche Raum- und Zeitbegriffe im 17. und 18. Jahrhundert

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    Am 27. und 28. September 2005 tagten Historiker und Philosophen der Mathematik und Naturwissenschaften in Frankfurt a.M. im Gebäude des Physikalischen Vereins. Eine Besonderheit des Internationalen Symposiums war der Dialog mit Vertretern der aktuellen Grundlagendebatte der Basiswissenschaft Physik. In zwölf Vorträgen wurden an zwei Tagen Raum- und Zeitkonzeptionen bedeutender Naturphilosophen der letzten 400 Jahre vorgestellt. Naturwissenschaftshistoriker rekonstruierten die Entwürfe von Giordano Bruno, Marin Mersenne, René Descartes, Otto von Guericke, Baruch Spinoza, Gottfried Wilhelm Leibniz, Isaac Newton und Leonhard Euler, während Grundlagentheoretiker der Physik einen Überblick über eigene Konzeptionen mit einem systematischen Anschluss an die Denktraditionen vorführten. Die Tagung wurde von der Fritz Thyssen Stiftung gefördert sowie vom Förderverein des Frankfurter Institutes für Geschichte der Naturwissenschaften "Arbor Scientiarum" und dem Physikalischen Verein finanziell unterstützt. ..

    Geometry and Mechanics

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    IASS-IACM 2008 Session: Geometry and Mechanics -- Session Organizers: Kai-Uwe BLETZINGER (TU Munich), Fehmi CIRAK (University of Cambridge) -- Keynote Lecture: "Modeling and computation of patient-specific vascular fluid-structure interaction using Isogeometric Analysis" by Yuri BAZILEVS , Victor M. CALO, Thomas J. R. HUGHES (University of Texas at Austin), Yongie ZHANG (Carnegie Mellon University) -- Keynote Lecture: "Optimal shapes of mechanically motivated surfaces" by Kai-Uwe BLETZINGER , Matthias FIRL, Johannes LINHARD, Roland WUCHNER (TU Munich) -- "Subdivision shells for nonsmooth and branching geometries" by Quan LONG, Fehmi CIRAK (University of Cambridge) -- "Water landing analyses with explicit finite element method" by John T. WANG (NASA Langley Research Center) -- "On a geometrically exact contact description for shells: From linear approximations for shells to high-order FEM" by Alexander KONYUKHOV, Karl SCHWEIZERHOF (University of Karlsruhe

    Hacia una poética del naufragio: melancolía y estudios transatlánticos

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    Människohandel i sexuellt syfte – vad säger normen? En rättssociologisk studie om sociala normer och maktstrukturer inom människohandel i sexuellt syfte.

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    The overall purpose of this thesis is to study what the general understanding of human trafficking for sexual purposes is, and at the same time increase the awareness regarding the subject. It is important to highlight this subject matter, since Sweden is striving for equality within its society (Bucken-Knapp, Karlsson & Persson-Strömbäck, 2010: 182) and the thesis becomes of interest when studying the views of this crime in Sweden in 2015. To be able to meet the purpose of the study we have asked questions concerning what the social norms surrounding the crime are and what the views regarding the social power structures of sex, social class, and ethnicity are, and also how well they correspond to the theory of socialist feminism. The study is performed from two perspectives - sociology of law and a normative perspective. To answer our questions we will analyse 212 answers of a quantitative survey we shared through the social media Facebook. Our results show that the participants of this study have taken notice of the impact of the social power structures within human trafficking for sexual purposes and expressed a negative attitude and resentment toward their influence on the crime. The social norm within our close social environment is to regard sex and social class as somewhat more important elements than ethnicity in the process of human trafficking for sexual purposes
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