Jian Zhang Bücher

In den letzten Jahren hat der Bedarf an neuen Blechumformverfahren für Prototypen- und Kleinserienproduktionen zugenommen, da die Entwicklung komplexer Werkzeuge zeit- und kostenintensiv ist. Mit der Mikroelektronik in den 1980er Jahren wurde die NC-Steuerung für Umformprozesse wie „Drücken“ und „Drückwalzen“ eingeführt, was komplexe Bewegungen von Werkzeugen ermöglicht. 1993 entwickelte Matsubara das „Incremental backward bulge forming“ aus dem Drückwalzen, das asymmetrische Bauteile durch komplexe Bewegungen mit einfachen, geometrieunabhängigen Werkzeugen herstellt. Dieses Verfahren, das sukzessive in kleinen Teilen des Werkstücks formt, fand großes Interesse in der Forschung und wurde weiterentwickelt. Aktuell wird es in die Gruppen „two point incremental forming (TPIF)“ und „single point incremental forming (SPIF)“ eingeordnet. Die Arbeit präsentiert ein neues roboterbasiertes inkrementelles Blechumformverfahren, das die Entwicklung und die Einsatzgrenzen dieses Verfahrens behandelt. Zunächst werden theoretische Grundlagen erläutert und die systematische Synthese für das neue Verfahren abgeleitet. Zudem werden Einflussparameter, Werkzeugauslegungen und Umformstrategien analysiert. Ein weiterer Fokus liegt auf der Generierung von Roboterbahndaten aus CAD-Modellen für das Blechumformverfahren.

本书是一部以收录汉语词汇和当代报刊和新词新义为主的汉英工具书。共收约5500个单字条目,近10万个多个字条目,包括12000 条自改革开放以来经常见诸报端的新词语。

MILA THE MAGICIAN tells the adventures of a young man, Mila, who leaves home to learn black magic. After overcoming many difficulties, he becomes a powerful sorcerer. An adventure story; it is also a tale of revenge, as it delves into the psychology and ramifications of vengeance. Mila is motivated by the desire to take revenge against his evil uncle and aunt, who have robbed him of his inheritance and left his mother and sister destitute. But successful revenge does not make Mila happy. He is deeply remorseful as he has harmed many innocent people. In penitence, he turns to Buddhism and eventually, he becomes a great saint. This tale of magic is not completely imaginary; it follows the traditional beliefs and folklore of Tibet. The narration has a Buddhist perspective; loosely based on the early life of the great Tibetan saint Milarepa (13th C. AD). It is not a biography; but an entertaining story set in Tibet, with its beautiful scenery and rich culture. This bilingual book is fascinating. ... I am happy...to recommend it. -Professor YU Kuang Chung, Kaohsiung, Taiwan The reader's curiosity is immediately aroused and his attention engaged. ... Everyone should take notice, for this book has value. -Lomen

Focusing on the evolution of content analysis in the context of the World Wide Web, this book explores the challenges posed by the web's dynamic nature on traditional research methods. It conducts a thematic meta-analysis of studies from 2000 to 2004, identifying both longstanding and emerging issues faced by researchers. The work offers insights into the application of content analysis during this period and proposes solutions to enhance research methodologies. Aimed at scholars in Mass Communications, Journalism, and Information Science, it addresses critical advancements in the field.

This book reviews the state-of-the-art in combinatorial testing, with particular emphasis on the automatic generation of test data. It describes the most commonly used approaches in this area - including algebraic construction, greedy methods, evolutionary computation, constraint solving and optimization - and explains major algorithms with examples. In addition, the book lists a number of test generation tools, as well as benchmarks and applications. Addressing a multidisciplinary topic, it will be of particular interest to researchers and professionals in the areas of software testing, combinatorics, constraint solving and evolutionary computation.