The combinatorial core of the OVSF code assignment problem that arises in UMTS is to assign some nodes of a complete binary tree of height h (the code tree) to n simultaneous connections, such that no two assigned nodes (codes) are on the same root-to-leaf path. Each connection requires a code on a specified level. The code can change Over time as long as it is still on the same level. We consider the one-step code assignment problem: Given an assignment, move the minimum number of codes to serve a new request. Minn and Siu proposed the so-called DCAalgorithm to solve the problem optimally. We show that DCA does not always return an optimal solution, and that the problem is NP-hard. We give an exact nO(h)-time algorithm, and a polynomial time greedy algorithm that achieves approximation ratio Θ(h). Finally, we consider the online code assignment problem for which we derive several results
标签： combinatorial assignment problem arises
上传时间： 2014-01-19
上传用户：BIBI
密码学界牛人Victor Shoup用C++编写数论类库。 NTL is a high-performance, portable C++ library providing data structures and algorithms for arbitrary length integers for vectors, matrices, and polynomials Over the integers and Over finite fields and for arbitrary precision floating point arithmetic. NTL provides high quality implementations of state-of-the-art algorithms for: * arbitrary length integer arithmetic and arbitrary precision floating point arithmetic * polynomial arithmetic Over the integers and finite fields including basic arithmetic, polynomial factorization, irreducibility testing, computation of minimal polynomials, traces, norms, and more * lattice basis reduction, including very robust and fast implementations of Schnorr-Euchner, block Korkin-Zolotarev reduction, and the new Schnorr-Horner pruning heuristic for block Korkin-Zolotarev * basic linear algebra Over the integers, finite fields, and arbitrary precision floating point numbers.
标签： high-performance providing portable library
上传时间： 2014-01-04
上传用户：exxxds
Description The art galleries of the new and very futuristic building of the Center for Balkan Cooperation have the form of polygons (not necessarily convex). When a big exhibition is organized, watching Over all of the pictures is a big security concern. Your task is that for a given gallery to write a program which finds the surface of the area of the floor, from which each point on the walls of the gallery is visible. On the figure 1. a map of a gallery is given in some co-ordinate system. The area wanted is shaded on the figure 2.
标签： Description futuristic galleries the
上传时间： 2017-02-17
上传用户：1427796291
Java technology is both a programming language and a platform. The Java programming language originated as part of a research project to develop advanced software for a wide variety of network devices and embedded systems. The goal was to develop a small, reliable, portable, distributed, real-time operating platform. When the project started, C++ was the language of choice. But Over time the difficulties encountered with C++ grew to the point where the problems could best be addressed by creating an entirely new language platform. Design and architecture decisions drew from a variety of languages such as Eiffel, SmallTalk, Objective C, and Cedar/Mesa. The result is a language platform that has proven ideal for developing secure, distributed, network-based end-user applications in environments ranging from network-embedded devices to the World-Wide Web and the desktop
标签： programming language Java technology
上传时间： 2014-01-03
上传用户：huangld
新闻 网页 贴吧 知道 MP3 图片 视频 帮助 | 高级搜索 把百度设为主页 百度一下，找到相关网页165篇，用时0.050秒 Book Switzerland Hotels .. HRS, Over 230,000 hotels worldwide, Real time prices and av.. www.HRS.com 中国Quick Book 速达软件 速达软件是全球最大的中小企业管理软件品牌Quickbooks家族的中.. www.shsuda.cn 上海索迪IBM大学生sql编程.. 政府授牌-索迪IBM封闭式软件实训基地,与千家IT企业签订人才服务.. www.hroso.com 上海it编程工程师培训 NII.. NIIT是全球领先的IT学习解决方案公司,拥有近500万注册学生及33.. www.sh-niit.cn java语言编程培训 首选上.. 上海达内外企软件工程师定向委培.近万名学员成功就业IBM,HP,华.. www.51tarena.com 上海游戏开发编程培训 高.. 上海游戏学院是一家致力于培养游戏开发与设计人才的专业机构.开.. www.gamfe.com 加工中心编程培训 大型数控机床培训基地,加工中心编程培训.本校凭承“优师资,严管.. www.tcskpx.com 上海php编程培训, 助您年.. 上海最早最大php编程培训中心,学费仅需付六成,可申请先就业后付.. www.wenhua.com 找tale book 源代码
上传时间： 2017-03-10
上传用户：2467478207
Serial UART open source core. The design is engineered for use as a stand alone chip or for use with other of our cores. The reason for developing the Serial UART core is the fact, that asynchronous serial communication is very common that almost every machine understands it.Also, for OCRP-1, we needed a way of communication with a host computer, to make it available Over the net.
标签： engineered for use Serial
上传时间： 2017-03-11
上传用户：aa17807091
this is word doccoment created on TFTP protocl i.e. Trivial File Transfer Protocol.this is the protocol used to transfer the files Over the network.
标签： i.e. this doccoment Protocol
上传时间： 2017-03-21
上传用户：fhzm5658
This paper shows the development of a 1024-point radix-4 FFT VHDL core for applications in hardware signal processing, targeting low-cost FPGA technologies. The developed core is targeted into a Xilinx庐 Spartan鈩?3 XC3S200 FPGA with the inclusion of a VGA display interface and an external 16-bit data acquisition system for performance evaluation purposes. Several tests were performed in order to verify FFT core functionality, besides the time performance analysis highlights the core advantages Over commercially available DSPs and Pentium-based PCs. The core is compared with similar third party IP cores targeting resourceful FPGA technologies. The novelty of this work is to provide a lowcost, resource efficient core for spectrum analysis applications.
标签： applications development hardware paper
上传时间： 2013-12-21
上传用户：jichenxi0730
Managing Humans is a selection of the best essays from Michael Lopps web site, Rands In Repose. Drawing on Lopp s management experiences at Apple, Netscape, Symantec, and Borland, this book is full of stories based on companies in the Silicon Valley where people have been known to yell at each other. It is a place full of dysfunctional bright people who are in an incredible hurry to find the next big thing so they can strike it rich and then do it all Over again. Among these people are managers, a strange breed of people who through a mystical organizational ritual have been given power Over your future and your bank account. Whether you re an aspiring manager, a current manager, or just wondering what the heck a manager does all day, there is a story in this book that will speak to you. You will learn: * What to do when people start yelling at each other * How to perform a diving save when the best engineer insists on resigning * How to say "No" to the person who signs your paycheck
标签： selection Managing Michael Humans
上传时间： 2014-11-28
上传用户：1427796291
Netcat for NT is the tcp/ip "Swiss Army knife" that never made it into any of the resource kits. It has proved to be an extremely versatile tool on the unix platform. So why should NT always be unix s poor cousin when it comes to tcp/ip testing and exploration? I bet many NT admins out there keep a unix box around to use tools such as Netcat or to test their systems with the unix version of an NT vulnerability exploit. With Netcat for NT part of that feeling disempowerment is Over.
上传时间： 2017-04-02
上传用户：onewq
