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The volumes of this classic series, now referred to simply as Zechmeister after its founder, L. Zechmeister, have appeared under the Springer Imprint ever since the series' inauguration in 1938. The volumes contain contributions in various topics related to the origin, distribution, chemistry, synthesis, biochemistry, function or use of various classes of naturally occurring substances ranging from small molecules to biopolymers. Each contribution is written by a recognized authority in his field and provides a comprehensive and up-to-date review of the topic in question. Addressed to biologists, technologists, and chemists alike, the series can be used by the expert as a source of information and literature citations and by the non-expert as a means of orientation in a rapidly developing discipline.
Die vorliegende Arbeit entstand wahrend meiner Tatigkeit als wissenschaftlicher Mitarbeiter am lnstitut fur Umformtechnik der Universitat Stuttgart. Herrn Professor Dr. -lng. K. Lange danke ich fur seine wohlwollen- de Unterstutzung und groBzugige F6rderung bei der Durchfuhrung dieser Arbeit. Fur die eingehende Durchsicht der Dissertation, aus der sich zahlreiche Anregungen ergaben, bin ich Herrn Professor Dr. -lng. H. -J. Warnecke dankbar. Mein Dank gilt auch allen Mitarbeiterinnen und Mitarbeitern des lnstituts fur Umformtechnik, die durch tatige Hilfe meine Ar- beit unterstutzt haben. Die Mittel zur Durchfuhrung wurden von der Deutschen Forschu gs- gemeinschaft zur Verfugung gestellt. Stuttgart, Dezember 1979 Peter Metzger Inhaltsverzeichnis Seite Schrifttumsverzeichnis 12 18 Verwendete GraBen, Formelzeichen und Einheiten Indizes 18 19 Abklirzungen 21 o Einleitung Entwicklung flexibler umformender Bearbei- 24 tungseinheiten 1 - 1 Allgemeine Maglichkeiten des Einsatzes von Umformverfahren in flexiblen Fertigungs- 24 systemen 26 1. 2 Anforderungen an Maschinen und Einrichtungen 27 1 . 3 Anforderungen an Umformverfahren 29 1. 4 Ausgeflihrte industrielle Beispiele 1 . 5 Folgerungen hinsichtlich der Entwicklung 31 flexibler Umformanlagen 2 Die flexible Bearbeitungseinheit "Radialumform- 33 maschine" 33 2. 1 Beschreibung der Anlage 33 2. 1 - 1 Allgemeines 33 2. 1. 2 Teilespektrum 35 2. 1. 3 Konstruktion 39 2. 1. 4 Werkzeuge 39 2. 1 . 5 Steuerungskonzept 2. 2 Mogliche Stellung der Maschine innerhalb eines 41 Fertigungssystems 2. 2. 1 Flexibles Einmaschinen-Umformsystem im Rahmen 42 eines lose verketteten Mehrmaschinensystems 43 2. 2. 2 Gemischtes, flexibles Fertigungssystem 3 Grundlagen der automatischen Arbeitsablaufer- 45 mitt lung 3.
When this classic volume first appeared, academic freedom was a crucially important issue. It is equally so today. Hofstadter approaches the topic historically, showing how events from various historical epochs expose the degree of freedom in academic institutions. The volume exemplifies Richard Hofstader's qualities as a historian as well as his characteristic narrative ability. Hofstadter first describes the medieval university and how its political independence evolved from its status as a corporate body, establishing a precedent for intellectual freedom that has been a measuring rod ever since. He shows how all intellectual discourse became polarized with the onset of the Reformation. The gradual spread of the Moderate Enlightenment in the colonies led to a major advance for intellectual freedom. But with the beginning of the nineteenth century the rise of denominationalism in both new and established colleges reversed the progress, and the secularization of learning became engulfed by a tidal wave of intensifying piety. Roger L. Geiger's extensive new introduction evaluates Hofstadter's career as a historian and political theorist, his interest in academic freedom, and the continuing significance of Academic Freedom in the Age of the College. While most works about higher education treat the subject only as an agent of social economic mobility, Academic Freedom in the Age of the College is an enduring counterweight to such histories as it examines a more pressing issue: the fact that colleges and universities, at their best, should foster ideas at the frontiers of knowledge and understanding. This classic text will be invaluable to educators, university administrators, sociologist, and historians.
When this classic volume first appeared, academic freedom was a crucially important issue. It is equally so today. Hofstadter approaches the topic historically, showing how events from various historical epochs expose the degree of freedom in academic institutions. The volume exemplifies Richard Hofstader's qualities as a historian as well as his characteristic narrative ability. Hofstadter first describes the medieval university and how its political independence evolved from its status as a corporate body, establishing a precedent for intellectual freedom that has been a measuring rod ever since. He shows how all intellectual discourse became polarized with the onset of the Reformation. The gradual spread of the Moderate Enlightenment in the colonies led to a major advance for intellectual freedom. But with the beginning of the nineteenth century the rise of denominationalism in both new and established colleges reversed the progress, and the secularization of learning became engulfed by a tidal wave of intensifying piety. Roger L. Geiger's extensive new introduction evaluates Hofstadter's career as a historian and political theorist, his interest in academic freedom, and the continuing significance of Academic Freedom in the Age of the College. While most works about higher education treat the subject only as an agent of social economic mobility, Academic Freedom in the Age of the College is an enduring counterweight to such histories as it examines a more pressing issue: the fact that colleges and universities, at their best, should foster ideas at the frontiers of knowledge and understanding. This classic text will be invaluable to educators, university administrators, sociologist, and historians.
Preface By William Van O'Connor And Frederick J. Hoffman.
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