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61.
This paper deals with the issues of development and implementation of a real-time NURBS interpolator for a six-axis robot. Using an open-architecture controller system as a testbed, a real-time NURBS curve interpolator was developed, implemented and tested. Sample runs were conducted with the resulting trajectories measured in real-time during robot motion. The resulting trajectories are analyzed, discussed and compared with those from a commonly used point-to-point approximation technique. The real-time NURBS curve interpolator's feasibility, advantages and related issues are also discussed. 相似文献
62.
A whole‐program MATLAB to C translation system is presented. The paper outlines the motivation for the problem, discusses the system's architecture, its features and limitations. The translator's operation is explained using an example input program. Details are given on how the system implements and specializes some of the language's built‐in primitives. Finally, the paper reports measurements evaluating the execution time and memory usage of the translated sources, and the compilation time required for the translations. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
63.
本文回顾了20世纪初前苏联高等艺术与技术创作工作室(呼捷玛斯)自1920年成立以来至1930年解体,10多年的艰苦历程和对世界现代建筑思想创立的重要贡献。并全面,清晰地勾勒了20世纪初现代建筑运动的两个中心——德国的包豪斯和前苏联的呼捷玛斯的全景。 相似文献
64.
65.
66.
浅谈我国土建施工企业技术创新体制的建设 总被引:1,自引:1,他引:0
分析了我国土建施工企业的现状,研究了加入WTO后我国土建行业面临的形势,详细阐述了加强技术创新、主动应对竞争与挑战的措施,总结了土建施工企业技术创新的特点及发展方向。 相似文献
67.
本文对宽带综合通信网交换系统几个主要方面技术的发展趋向作了概括介绍,内容包括:电子交换的分布结构、ATM交换的开始应用,个人通信的无线进网,宽带交换引用光子技术和多媒体交换结构分析。 相似文献
68.
Summary We propose hot-potato (or, deflection) packet routing algorithms on the two-dimensional mesh. The algorithms are strongly greedy in the sense that they attempt to send packets in good directions whenever possible. Furthermore, the routing operations are simple and independent of the time that has elapsed. The first algorithm gives the best evacuation time known for delivering all the packets to their destinations. A batch ofk packets with maximal source-to-destination distanced
max is delivered in 2(k-1)+d
max. The second algorithm improves this bound tok+d
max when all packets are destined to the same node. This also implies a new bound for the multitarget case, which is the first to take into account the number of in-edges of a node. The third algorithm is designed for routing permutations with source-to-destination distance at most three, in which case the algorithm terminates in at most seven steps. We also show a lower bound of five steps for this problem.
Ishai Ben-Aroya received the B.A. and M.Sc. in computer science from the Technion (Israel Institute of Technology). He is currently working with Microsoft Israel R&D group. His main interests include Routing Algorithms, Cryptography and Computer Security.
Tamar Eilam received the B.A. degree in Computer Science from the Technion IIL in 1995, and is currently studying towards her M.A. degree.
Assaf Schuster received his B.A., M.A. and Ph.D. degrees in Computer Science from the Hebrew University of Jerusalem (the last one in 1991). He is currently a lecturer at the Technion IIL. His main interests include Networks and Routing Algorithms, Parallel and Distributed Computation, Optical Computation and Communication, Dynamically Reconfiguring Networks, and Greedy Hot Potato Routing.This work was supported in part by the French-Israeli grant for cooperation in Computer Science, and by a grant from the Israeli Ministry of Science. An extended abstract appeared in proc. 2nd European Symposium on Algorithms, September 1994 相似文献
69.
Domenico Ferrari 《Multimedia Systems》1998,6(3):179-185
The research done by the Tenet Group in multimedia networking has reached a point where it may be useful to reflect on the
significance of its results for the current debate on how integrated-services internetworks should be designed. Such reflections
constitute the main subject of this paper. The principles of the work and the conclusions reached so far by the Tenet researchers
are discussed in the light of the conflict between the two major technologies being proposed to build future information infrastructures:
namely, the Internet and the ATM technologies. The Tenet approach suggests one feasible way for resolving the conflict to
the advantage of all the users of those infrastructures. This paper discusses various fundamental aspects of integrated-services
network design: the choice of the service model, the type of charging policy to be adopted, and the selection of a suitable
architecture. 相似文献
70.
阐述了信息制胜战中数字战场的三种体系结构(作战体系结构、系统体制结构与技术体系结构)及信息系统技术体系近几年的发展;介绍了信息化战场提出的几种技术体系结构,进而分析指出了数字化战场发展过程中所需要开发的各种信息业务和应当注意加强研究的技术方面。 相似文献