Metamorphic Algorithm of Self-reconfigurable Modular Robotic System

Introduction Aself reconfigurableroboticsystemconsistsofman simpleidenticalmechatronicmodules.Thesemodulesca connectanddisconnectfromonetoanothertochangethe overalltopology.Thesystemcanautonomouslyandynamicallyadaptitsshapetosuittheneedsofthetask hand,e.g.manipulation,locomotion,andcreationo staticstructures.Thegeneralphilosophyofsel reconfigurableroboticsystemistosimplifythedesignanreducemanufacturingcostandenhancefunctionalityan versatilitythroughalargernumberofidenticalmodules.I addition…     

仿真工程数据库的开发与研究

本文对建模、仿真、优化软件包ＭＳＯＰ的功能做了简要介绍，分析了ＭＳＯＰ包各功能模块输入输出数据文件的特点，在此基础上设计了面向ＭＳＯＰ包的仿真数据库ＳＤＢ。本文介绍了ＳＤＢ的结构、设计思想和技术要点。ＳＤＢ与ＭＳＯＰ构成了一体化仿真软件系统，ＳＤＢ的引入大大增强了软件系统的功能。     

论机床专用夹具定位误差的本质

根据机床专用夹具定位误差的定义,论述了定位误差的来源、本质、特点和常用分析计算方法。     

Localization and the interface between quantum mechanics, quantum field theory and quantum gravity II: The search of the interface between QFT and QG

The main topics of this second part of a two-part essay are some consequences of the phenomenon of vacuum polarization as the most important physical manifestation of modular localization. Besides philosophically unexpected consequences, it has led to a new constructive “outside-inwards approach” in which the pointlike fields and the compactly localized operator algebras which they generate only appear from intersecting much simpler algebras localized in noncompact wedge regions whose generators have extremely mild almost free field behavior.Another consequence of vacuum polarization presented in this essay is the localization entropy near a causal horizon which follows a logarithmically modified area law in which a dimensionless area (the area divided by the square of dR where dR is the thickness of a light-sheet) appears. There are arguments that this logarithmically modified area law corresponds to the volume law of the standard heat bath thermal behavior. We also explain the symmetry enhancing effect of holographic projections onto the causal horizon of a region and show that the resulting infinite dimensional symmetry groups contain the Bondi–Metzner–Sachs group. This essay is the second part of a partitioned longer paper.     

模n－王后问题中的部分n－解（Ⅲ）

记Ｍ（ｎ）为模。棋盘上互不攻击的皇后的最大个数。在本文中，我们证明了当ｇｃｄ（ｎ，６）＝１时，Ｍ（ｎ）＝ｎ；当ｇｃｄ（ｎ，１２）＝２时，Ｍ（ｎ）＝ｎ－１；当ｇｅｄ（ｎ，１２）＝３，４，６，１２时，Ｍ（ｎ）－ｎ－２。最后，给出了Ｍ（ｎ）＝ｎ的三个等价命题。     

盲孔套筒零件的加工

介绍了从零件结构特点、加工精度来合理选择夹具、切削用量、刀具几何参数，以保证零件加工质量的工艺分析方法。     

长期预报的相空间模回归法

考虑到因确定性系统的外在随机因素和内在随机性所造成的长期预报的不准确性,我们将有关的浑沌理论和数理统计理论结合起来,提出了d维相空间模回归预报法。经调试后,该模式的距平符号报准率一般不低于66％,而相对误差一般不大于10％。     

现代组合机床技术及其发展

本文介绍了现代组合机床技术发展的主流。分析了组合机床柔性化的几个主要方面,以及通用部件、加工精度、应用范围方面的现状及发展。最后从柔性制造技术角度介绍了组合机床综合自动化技术的发展新动向。     

多精度整数高效模幂运算算法的研究

介绍了多精度整数求幂运算中的“滑动窗口”算法,并结合Montgomery约简算法．对“滑动窗口”算法进行了应用研究,分析了根据多精度整数的位数来确定相应的窗口大小。结果表明．采用这种组合的模幂运算算法具有十分高效的执行效率,4096位多精度整数的模幂计算大约需要1．5s,并可满足RSA的应用对密钥长度的安全需求。     

基于分区的安全关键软件体系及其时间分析研究

以综合模块化航空电子系统为研究对象,针对分时分区体系提出了其时间分析模型,结合IPET和不变量分析设计并实现了时间可分析工具IMATime.采用SNU Benchmark对IMATime进行了时间评估.并采用IMATime对分时分区软件平台FCOS进行了三级分析,分析结果除了能够指导系统通用设计外,还能提供综合模块化航空电子系统的专用参数分区周期和分区容限.最后针对某综合了飞行控制系统,导航系统和数传系统的综合航空电子系统进行了实例分析.