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For much of the postwar era, Heinz Nixdorf epitomized the Wirtschaftswunder, Germany's extraordinary recovery from the devastation of war. During his lifetime, he became a legend as the visionary young entrepreneur who had the nerve to challenge the giants of the computer industry. He started out with a moped, a few hand tools and a project. He set up his workshop in the basement of an electric power plant and built it into a one-man global company employing 20000 people. In 1986, at the age of 60, during a company party held at the Hannover Fair, he was struck by a heart attack. During the war, he served on the Eastern Front. Upon his return, he studied four years at Frankfurt University, but decided to leave without earning a degree and to set up his own company. He was toying with the idea of bringing the computer to the office, which was in complete contrast to the strategy of the industry leaders. Yet he prevailed and thereby opened up new markets. The technical knowledge he gradually acquired through years of hard work, allowed him to recognize with incredible ability the value of new and untried ideas and to put them into practice. He had the clairvoyance to reduce complex matters to the simplest possible denominator and to concentrate on what was essential. Once he made a decision, he went ahead, regardless of the consequences. He possessed the characteristics of a dynamic entrepreneur: a willingness to take risks, self-confidence, a pioneering spirit, discipline and motivation to venture into the use of untested technology. Whereas the computer industry was producing mainframes available only to large corporations, he decided to pave the way for decentralized computing by making desktop machines available to small and medium companies. Unencumbered by the electromechanical tradition of the industry, he ventured into new fields of electronics. Nixdorf was an optimist convinced he could overcome any obstacle. His leadership style and the organizational structure and framework which he developed in his company were based on the idea that victory belongs to the bold. He was an unusual executive in that he was not only the manager; he owned the business lock, stock, and barrel. He was convinced that an entrepreneur does not gain legitimacy by the wealth he accumulates, but by the contribution he makes to society. Money was not his driving force. But the memory of the hardships he endured during his early years, the loss of his father during the war and the privations his mother, brothers and sisters had to endure, never left him.
Communication networks and computer systems research is entering a new phase in which many of the established models and techniques of the last twenty years are being challenged. The research community is continuing to free itself from past intellectual constraints so that it may fully exploit the convergence of computing and communications. Evaluating the performance of emerging communications and computer systems constitutes a huge challenge. Thus, current research provides a set of heterogeneous tools and techniques embracing the uncertainties of time and space varying environments when the requests for diverse services are made in real time, and with very different quality of service expectations.These novel techniques will lead to fast and economic service deployment and effective dynamic resource management, and hence to new business strategies and infrastructures that will facilitate the emergence of future services and applications.This volume contains contributions and presentations made by leading international researchers at a workshop which was held in April 2004 to honour Professor Erol Gelenbe on the occasion of his inaugural lecture as the Dennis Gabor Chair at Imperial College London.
This new networking text follows a top-down approach. The presentation begins with an explanation of the application layer, which makes it easier for students to understand how network devices work, and then, with the students fully engaged, the authors move on to discuss the other layers, ending with the physical layer. With this top-down approach, its thorough treatment of the topic, and a host of pedagogical features, this new networking book offers the market something it hasn't had for many years- a well-crafted, modern text that places the student at the center of the learning experience.
Forouzan's Computer Networks presents a complex topic in an accessible, student-friendly way that makes learning the material not only manageable but fun as well. The appealing visual layout combines with numerous figures and examples to provide multiple routes to understanding. Students are presented with the most up-to-date material currently available and are encouraged to view what they are learning in a real-world context. This approach is both motivating and practical in that students begin to see themselves as the professionals they will soon become.
In this remarkable proto-science fiction story from 1666--which also bear striking resemblances with modern fantasy--the author Lady Margaret Cavendish explores an allegorical and satirical world, which she finds through a portal at the North Pole. The bizarre beings in this world need to understand the true meaning of science and philosophy, which Lady Cavendish provides them, and thus she becomes their empress. The Description of a New World, Called the Blazing-World criticize and explore such issues as science, gender and power. The natural philosopher, author and poet Margaret Lucas Cavendish, Duchess of Newcastle (1623-73) lived during the scientific revolution and participated in this brand new world, with contemporaries such as Descartes, Leibniz and Newton. One of her correspondents was the astronomer Huygens. She was the first--and during a long time the only--woman who was allowed to attend a meeting at Royal Society of London. Margaret was viewed by her contemporaries as being rather eccentric. She was extravagant and flirtatious, accused of using speech full of "oaths and obscenity," and was noted for her unusual sense of fashion. Today, she is honored as an original, unique and clear-sighted thinker, as well as an early feminist.
This book demonstrates that the concept of an instruction sequence offers a novel and useful viewpoint on issues relating to diverse subjects in computer science. Selected issues relating to well-known subjects from the theory of computation and the area of computer architecture are rigorously investigated in this book thinking in terms of instruction sequences. The subjects from the theory of computation, to wit the halting problem and non-uniform computational complexity, are usually investigated thinking in terms of a common model of computation such as Turing machines and Boolean circuits. The subjects from the area of computer architecture, to wit instruction sequence performance, instruction set architectures and remote instruction processing, are usually not investigated in a rigorous way at all.
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