Inaug.-diss.--Munich. / Lebenslauf. "Literatur": p. 121-123.

Texte remanié de: Diss.--Institut für Geschichte--Universität Salzburg, 2001. / Bibliogr. p. 483-547. Index.

A general approach to numerically simulating wear in rollingand sliding contacts is presented in this thesis. A simulationscheme is developed that calculates the wear at a detailedlevel. The removal of material follows Archard’s wear law,which states that the reduction of volume is linearlyproportional to the sliding distance, the normal load and thewear coefficient. The target application is the wheel-railcontact. Careful attention is paid to stress properties in the normaldirection of the contact. A Winkler method is used to calculatethe normal pressure. The model is calibrated either withresults from Finite Element simulations (which can include aplastic material model) or a linear-elastic contact model. Thetangential tractions and the sliding distances are calculatedusing a method that incorporates the effect of rigid bodymotion and tangential deformations in the contact zone.Kalker’s Fastsim code is used to validate the tangentialcalculation method. Results of three different sorts ofexperiments (full-scale, pin-on-disc and disc-on-disc) wereused to establish the wear and friction coefficients underdifferent operating conditions. The experimental results show that the sliding velocity andcontact pressure in the contact situation strongly influencethe wear coefficient. For the disc-on-disc simulation, therewas good agreement between experimental results and thesimulation in terms of wear and rolling friction underdifferent operating conditions. Good agreement was alsoobtained in regard to form change of the rollers. In thefull-scale simulations, a two-point contact was analysed wherethe differences between the contacts on rail-head to wheeltread and rail edge to wheel flange can be attributed primarilyto the relative velocity differences in regard to bothmagnitude and direction. Good qualitative agreement was foundbetween the simulated wear rate and the full-scale test resultsat different contact conditions. <b>Keywords:</b>railway rail, disc-on-disc, pin-on-disc,Archard, wear simulation, Winkler, rolling, sliding

<p>A general approach to numerically simulating wear in rollingand sliding contacts is presented in this thesis. A simulationscheme is developed that calculates the wear at a detailedlevel. The removal of material follows Archard’s wear law,which states that the reduction of volume is linearlyproportional to the sliding distance, the normal load and thewear coefficient. The target application is the wheel-railcontact.</p><p>Careful attention is paid to stress properties in the normaldirection of the contact. A Winkler method is used to calculatethe normal pressure. The model is calibrated either withresults from Finite Element simulations (which can include aplastic material model) or a linear-elastic contact model. Thetangential tractions and the sliding distances are calculatedusing a method that incorporates the effect of rigid bodymotion and tangential deformations in the contact zone.Kalker’s Fastsim code is used to validate the tangentialcalculation method. Results of three different sorts ofexperiments (full-scale, pin-on-disc and disc-on-disc) wereused to establish the wear and friction coefficients underdifferent operating conditions.</p><p>The experimental results show that the sliding velocity andcontact pressure in the contact situation strongly influencethe wear coefficient. For the disc-on-disc simulation, therewas good agreement between experimental results and thesimulation in terms of wear and rolling friction underdifferent operating conditions. Good agreement was alsoobtained in regard to form change of the rollers. In thefull-scale simulations, a two-point contact was analysed wherethe differences between the contacts on rail-head to wheeltread and rail edge to wheel flange can be attributed primarilyto the relative velocity differences in regard to bothmagnitude and direction. Good qualitative agreement was foundbetween the simulated wear rate and the full-scale test resultsat different contact conditions.</p><p><b>Keywords:</b>railway rail, disc-on-disc, pin-on-disc,Archard, wear simulation, Winkler, rolling, sliding</p>

Thesis--Munich. / Vita. Includes bibliographical references (p. 293-296).

As the main vehicle through which the majority of the population comes to understand the world around them, the media has the power to dominate public opinion, reinforce traditional notions and introduce new ideologies. With regards to gender, the media’s role is two-prong: it pathologizes and highlights gender deviance, and simultaneous reinforces culturally constructed gender norms. The current study examines media representations of Mary Winkler, a Tennessee woman who shot her minister husband to death in 2006. Winkler’s role as the wife of a religious and community leader implies high morality, sexual demureness, nurturance and obedience. Because Winkler’s involvement in the shooting death of her husband severely conflict with these social and gender role expectations, this work examines how Winkler’s social position affect media depictions of her criminality, and the implications of these depictions on society’s perception of gender, religion, and crime. To answer these questions, 97 newspapers articles produced between April 9th, 2007 (the first day of Winkler’s trial) and August 15, 2007 (the date of Winkler’s release on parole) were analyzed using content analysis methodology. The study results show that Winkler’s adherence to feminine norms was highly influential in her construction as a sympathetic figure and her receipt of a lesser conviction of voluntary manslaughter. / text

Zugl.: Paderborn, Universiẗat, Diss., 2004.

Univ., Diss.--Innsbruck.

The problem of this study is two fold: (1) to determine the nature and extent of juvenile delinquency in Winkler County, Texas, during the years 1941 to 1946 inclusive; and (2) to discover some of the factors contributing to delinquency during that period.

Im Oktober 1875 erschien Clemens Winklers Schlüsselpublikation zum Schwefelsäure-Kontaktverfahren. Der Freiberger Chemiker lieferte nicht nur die wesentlichen Grundlagen des Prozesses, sondern initiierte eine Entwicklung, die der chemischen Industrie ein modernes Produktionsverfahren für eine wichtige Grundchemikalie in die Hand gab und damit ihre Entwicklung entscheidend beförderte. Neben Winklers Leistungen werden auch die bisher wenig gewürdigten Anstrengungen der Freiberger Hüttenwerke herausgestellt, denen es nach einigen Umwegen 1879 gelungen war, die erste wirklich funktionsfähige Kontaktanlage in Betrieb zu nehmen.