用等效图求解电容器电容的两类典型问题

应用等效图示的方法、分析求解平行板电容器插入电介质和加上屏蔽罩后的电容。     

6-SPS并联机器人工作空间研究

主要研究6-SPS并联机器人的工作空间。认为，对于结构参数给定的6-SPS机构，在算法上采取数学分析法，可迅速准确地算出在考虑了杆的干涉等结构约束条件下定姿态可达空间和工作空间的边界曲线。同时，还考察了结构参数对工作空间的影响，得出一些规律性变化关系。     

平行研究之我见

本文从平行研究的定义、存在依据、研究途径三方面来论述作为比较文学研究方法之一的平行研究 ,从民间文学等学科的研究成果为平行研究的存在提供了合理性依据 ,在操作层面上 ,应当强调开放性、兼容性 ,注意深入了解两国的历史文化语境 ,借鉴外学科的研究成果 ,把握好同、异因素与比较的关系。     

Architecture Singularity Analysis of 4-U PS/U PU 5-DOF Parallel Mechanism

Architecture singularity of a parallel mechanism with five degrees of freedom (DOF) is analyzed. Such mechanism consists of a movable platform connected to the base by five active limbs. Four of them are identical 6-DOF limbs and the last one has the same DOF as the specified DOF of the movable platform. Based on the kinematics analysis, two categories of architecture singularities for such mechanism are proposed. Then the sufficient condition for each singularity is researched. Results show that the mechanism is singular when it employs each category of the proposed architecture, provided that it satisfies the corresponding sufficient condition. It can be concluded that the proposed two categories of architecture singularities should be avoided with the following dimension-al synthesis of such mechanism.     

基于多邻域的并行混合局部搜索算法与时间表问题

This paper presents a parallel composite local search algorithm based on multiple search neighborhoods to solve a special kind of timetable problem. The new algorithm can also effectively solve those problems that can be solved by general local search algorithms. Experimental results show that the new algorithm can generate better solutions than general local search algorithms.     

Design and Implementation of Parallel Virtual Machine on GM

1.1 BackgroundThe SU'HPCS (Shanghai Ufllverslty HighPerfor-mance Computing System) Is a 144-processorLlnux cluster constricted from commodity personalcomputer teChnology it is designed tO be dedicated tOhigh performance computing for computationalenglneenng and scientific problems We have nowconstructed many parallel environmentS m SUHPCS,such as MPll'], PVMI"'], BSP14], and DSMI'], as well asHPFI61, tO help users enroll their aPPlications intOParallel comPUting system But o…     

一种基于重排首次匹配算法的新颖并行Turbo译码器存储方案

In this paper we discuss a novel storage scheme for simultaneous memory access in parallel turbo decoder. The new scheme employs vertex coloring in graph theory. Compared to a similar method that also uses unnatural order in storage, our scheme requires 25 more memory blocks but allows a simpler configuration for variable sizes of code lengths that can be implemented on-chip. Experiment shows that for a moderate to high decoding throughput （40-100 Mbps）, the hardware cost is still affordable for 3GPP＇s （3rd generation partnership project） interleaver.     

数学问题的交叉关系和平行关系

对数学问题的交叉关系和平行关系进行了讨论，并利用交叉关系和平行关系的方法解决具体问题，以能够达到更好地揭示问题的本质．     

Dynamic Distribution Model with Prime Granularity for Parallel Computing

Dynamic distribution model is one of the best schemes for parallel volume rendering. However, in homogeneous cluster system, since the granularity is traditionally identical, all processors communicate almost simultaneously and computation load may lose balance. Due to problems above, a dynamic distribution model with prime granularity for parallel computing is presented. Granularities of each processor are relatively prime, and related theories are introduced, A high parallel performance can be achieved by minimizing network competition and using a load balancing strategy that ensures all processors finish almost simultaneously, Based on Master-Slave-Gleaner （ MSG） scheme, the parallel Splatting Algorithm for volume rendering is used to test the model on IBM Cluster 1350 system. The experimental results show that the model can bring a considerable improvement in performance, including computation efficiency, total execution time, speed, and load balancing.     

Teachers’ perceptions of the benefits and the challenges of integrating educational robots into primary/elementary curricula

Twenty-first century education systems should create an environment wherein students encounter critical learning components (such as problem-solving, teamwork, and communication skills) and embrace lifelong learning. A review of literature demonstrates that new technologies, in general, and robotics, in particular, are well suited for this aim. This study aims to contribute to the literature by studying teachers' perceptions of the effects of using robotics on students' lifelong learning skills. This study also seeks to better understand teachers' perceptions of the barriers of using robotics and the support they need. Eleven primary/elementary teachers from Newfoundland and Labrador English Schools District participated in this study. The results of this study revealed that robotics is perceived by teachers to have positive effects on students' lifelong learning skills. Furthermore, the participants indicated a number of barriers to integrate robotics into their teaching activities and expressed the support they need.