c pgm to find redundant paths in a graph.Many fault-tolerant network algorithms rely on an underlying assumption that there are possibly distinct network paths between a source-destination pair. Given a directed graph as input, write a program that uses depth-first search to determine all such paths. Note that, these paths are not vertex-disjoint i.e., the vertices may repeat but they are all edge-disjoint i.e., no two paths have the same edges. The input is the adjacency matrix of a directed acyclic graph and a pair(s) of source and destination vertices and the output should be the number of such disjoint paths and the paths themselves on separate lines. In case of multiple paths the output should be in order of paths with minimum vertices first. In case of tie the vertex number should be taken in consideration for ordering.
标签： fault-tolerant algorithms redundant underlyin
上传时间： 2013-12-17
上传用户：jkhjkh1982
随着存储技术的迅速发展，存储业务需求的不断增长，独立的磁盘冗余阵列可利用多个磁盘并行存取提高存储系统的性能。磁盘阵列技术采用硬件和软件两种方式实现，软件RAID（redundant Array of Independent Disks）主要利用操作系统提供的软件实现磁盘冗余阵列功能，对系统资源利用率高，节省成本。硬件RAID将大部分RAID功能集成到一块硬件控制器中，系统资源占用率低，可移植性好。 分析了软件RAID的性能瓶颈，使用硬件直接完成部分计算提高软件RAID性能。针对RAID5采用FPGA（Field Programmable Gate Array）技术实现RAID控制器硬件设计，完成磁盘阵列启动、数据缓存（Cache）以及数据XOR校验等功能。基于硬件RAID的理论，提出一种基于Virtex-4的硬件RAID控制器的系统设计方案：独立微处理器和较大容量的内存；实现RAID级别迁移，在线容量扩展，在线数据热备份等高效、用户可定制的高级RAID功能；利用Virtex-4内置硬PowerPC完成RAID服务器部分配置和管理工作，运行Linux操作系统、RAID管理软件等。控制器既可以作为RAID控制卡在服务器上使用，也可作为一个独立的系统，成为磁盘阵列的调试平台。 随着集成电路的发展，芯片的体积越来越小，电路的布局布线密度越来越大，信号的工作频率也越来越高，高速电路的传输线效应和信号完整性问题越来越明显。RAID控制器属于高速电路的范畴，在印刷电路板（Printed Circuit Block, PCB）实现时分别从叠层设计、布局、电源完整性、阻抗匹配和串扰等方面考虑了信号完整性问题，并基于IBIS（I/O Buffer Information Specification）模型进行了信号完整性分析及仿真。
上传时间： 2013-04-24
上传用户：jeffery
Abstract: As electronic systems take over many of the mechanical functions in a car—ranging from engine timing to steering andbraking—there is a growing concern about fault tolerance. There should not be a single point of failure that would prevent a car fromat least "limping" off the road or making it to the nearest service station. redundant systems, watchdog timers, and other controlcircuits are used to reroute signals and perform other functions that ensure that a vehicle can safely make it off the road when afailure occurs.
上传时间： 2013-11-10
上传用户：diets
The Reed-Somolon code is specified by the finite field, the length (length <= 2^m-1), the number of redundant symbols (length-k), and the initial zero of the code, init_zero, such that the zeros are: init_zero, init_zero+1, ..., init_zero+length-k-1
标签： length the Reed-Somolon specified
上传时间： 2014-07-31
上传用户：skfreeman
Feature selection is a preprocessing technique frequently used in data mining and machine learning tasks. It can reduce dimensionality, remove irrelevant data, increase learning accuracy, and improve results comprehensibility. FCBF is a fast correlation-based filter algorithm designed for high-dimensional data and has been shown effective in removing both irrelevant features and redundant features
标签： preprocessing frequently selection technique
上传时间： 2014-01-19
上传用户：lindor
A kinematically redundant manipulator is a serial robotic arm that has more independently driven joints than are necessary to define the desired pose (position and orientation) of its end-effector. With this definition, any planar manipulator (a manipulator whose end-effector motion is restrained in a plane) with more than three joints is a redundant manipulator. Also, a manipulator whose end-effector can accept aspatialposeisaredundant manipulator ifithas morethan sixindependently driven joints. For example, the manipulator shown in Fig. 1.1 has two 7-DOF arms mounted on a torso with three degrees of freedom (DOFs). This provides 10 DOFs for each arm. Since the end-effector of each arm can have a spatial motion with six DOFs, the arms are redundant.
标签： Autonomous Modeling Planning Robots Path
上传时间： 2020-06-10
上传用户：shancjb
