Research on Virtual Object Tele-operation Based on Gesture

A tele-operation method of virtual environment based on gesture is presented.Firstly,the design block diagram and the information flow of the virtual environment tele-operation simulation system are given.Secondly,the coordination transformation between virtual gesture and the tele-operated aircraft is presented.Finally,a tele-operation simulation system based on gesture is developed.And the simulation results demonstrate that there is more consistency between the virtual gesture and the moving object.     

Study on Apparel EDI Standardization Based on XML

Introduction ElectronicDataInterchange(EDI)isdefinedby UnitedNationsStandardizationOrganizationascomputer to computerexchangeofbusinessdataoradministration informationthroughthenetworkinastandardformat.EDIcanbringmanybenefitstothoseindustriesthat needlotsofdataprocessingandinterchangewithagreat numberoftablesandfiles.Theseindustrieshavethe characteristicsoffrequenttradingandperiodicproduction,andtheapparelindustryisprovidedwiththisspecialty.Besides,themanufactureofgarmentisnowsometimes in…     

Study on Support Vector Machine Based on 1-Norm

The model of optimization problem for Support Vector Machine（SVM） is provided, which based on the definitions of the dual norm and the distance between a point and its projection onto a given plane. The model of improved Support Vector Machine based on 1-norm （1 - SVM） is provided from the optimization problem, yet it is a discrete programming. With the smoothing technique and optimality knowledge, the discrete programming is changed into a continuous programming. Experimental results show that the algorithm is easy to implement and this method can select and suppress the problem features more efficiently.Illustrative examples show that the 1 - SVM deal with the linear or nonlinear classification well.     

Thoughts on Writing

Focusing more on the content rather than on form and alsoabout the accurate of the words is the fundamental principalsfor teaching writing as the essays were evaluated for grammati-cal and quality of the content.The basic technique to master thefollowing …     

Symposium on Science

An international symposium on Frontiers of Sciences opened yesterday in Beijing' s Tsinghua University tocelebrate the80 th birthday of Professor Chen Ning Yang,a Nobel prize winner and also Tsinghua' shonorary professor.　 New discoveries and the latestcontributions in the field of physics and biotechnology are the main topicsin the symposium.　More than 1 5 0 scholars and scientists from China and abroad are attending the three- day event,including 1 4Nobel prize winnerSymposium on Sci…     

Some Remarks on the Degree of Crystallinity Measured on DSC

A modified mathematical model based on the melting and recrystallization of an initial distribution of melting temperatures predicts the melting behavior of polymer in differential scanning calorimetry ( DSC ) , taking into account of changes in heat of fusion with melting temperature of crystal and average heat capacity of sample. It has been used to analytically prove that the crystallinity measured on a DSC diagram could not be equal to the weight percentage of crystalline state in the initial specimen. The deviation of the measured crystallinity, as observed relevant to the melting and recrystallization processes, is caused by the changes of the heat of fusion with the melting temperature of crystals, as well as the difference of heat capacities of liquid and solid state polymer. Furthermore, upper and lower limits of the deviation have been discussed.     

Study on the New Grinding Fluids of Oils on Water

To fulfill a zero-emission in the process of grinding and thoroughly eliminate the influences of the conventional grinding fluids on the eco-environment as well as save up electric energy and reduce in production costs, the new grinding fluids of botanic oils on water were developed, in which a lot of tiny water droplets attached with micro oil films were blown to the machining area by a compressing air-jet so good as to produce lubricating and cooling roles. In this study, grinding performances of the new fluids were investigated by comparison to the conventional ones such as emulsion on the plane NC grinder.     

Study on the EM Scattering of Rivets on the Plate

The electromagnetic (EM) scattering by rivets on the conducting plate is studied for the first time by using electric field integral equation (EFIE) in conjunction with the moment method. The surfaces of the rivets and the plate are partitioned into triangular cells, the current distribution on the patches is represented by sub-domain type basis function, the EFIE is translated into matrix equation by the Galerkin method, then the current coefficient is obtained. The results show the properties of radar cross section (RCS) varying with the incident angle when there are rivets on the plate.     

Robustness Proof on A United Watermarking Based on CRT Theorem

A new method of embedding and detecting a joint watermarking is proposed. It applies the asmuth-bloom secret sharing scheme, which is based on CRT (Chinese remainder theorem) theorem, to the digital watermarking technology. On the base of describing the watermarking embedding proceeding and analyzing the watermarking detection proceeding, a series of experiments is done. The experiments emphasize on the method‘s robust proving and security analysis. And the experiments show that the method can resist the attacks of JPEG compress, geometry, noise and gray adjusting. The results of the experiments show that the method has a nice recognition of copyright for joint ownership.     

Fabrication of metal nanoclusters on graphene grown on Ru（0001 ）

Monolayer graphene was epitaxially grown on Ru（0001） through exposure of the Ru（0001） to ethylene at room temperature followed by annealing in ultrahigh vacuum at elevated temperatures. The resulting graphene structures were studied by scanning tunneling microscopy （STM）, X-ray photoelectron spectroscopy （XPS）, and ultraviolet photoelectron spectroscopy （UPS）. The graphene/Ru（0001） surface was used as a periodic template for growth of metal nanoclusters. Highly dispersed Pt clusters with well controlled size and spatial distribution were fabricated on the surface.     

Vehicle management based on GPS/GIS:A case study on bulk concrete trucks

Vehicle management is a very important application area of GPS/GIS. Each customer has its special requirements on GIS system when he installs it. We discuss a common structure of our GPS/GIS implementation, and present a case study on bulk concrete trucks management for bulk concrete producers. With GPS/GIS system, bulk concrete producers can improve their performance in scheduling and management.     

基于GPS/GIS/GPRS的车辆装备可视化管理系统研究

通过对GPS,GIS和GPRS技术以及三者集成技术的浅析,针对车辆装备管理工作中存在的现实问题,讨论了基于GPS,GIS和GPRS技术的车辆装备可视化管理系统的设计,探讨了基于GPS,GIS和GPRS技术的车辆装备可视化管理系统的实现途径.     

基于TCP/IP协议的智能公交管理系统应用

运用JAVA开发工具,以Microsoft Access作为后台数据库,基于TCP/IP短信平台设计一个GPS/GIS/GSM智能公交管理系统.该系统由监控中心、GPS车载终端和GSM网络通信3大模块组成,实现了车辆的准确定位、车辆的实时监控和车辆调度等公共交通管理要求.该系统经测试定位误差较小,能够满足公共交通管理的使用要求.     

基于移动GIS和GPS集成的绿化调查关键技术

以掌上电脑为移动设备,采用GPS（全球定位系统）、RTK（实时动态定位）技术,实现了移动GIS（地理信息系统）和GPS的集成.对移动GIS空间数据组织、GPS采集数据的GIS表达、GPS坐标转换等关键技术进行了研究,提出了一种适合于移动环境的GPS坐标转换模型,利用最小二乘法进行了坐标转换参数的求取与平差.构建了应用于绿化调查的移动GIS和GPS集成系统,利用该系统对上海某区进行了绿化信息调查试验.结果表明,所提出的GPS坐标转换模型和所实现的绿化调查系统,在移动环境下具有较好的高效性和实用性.     

基于CORS与MAPGIS的城镇土地管理信息系统的构建

介绍了GPS（CORS）技术和国产GIS软件MAPGIS在土地管理信息系统构建项目中的应用,并以某市经济技术开发区土地管理信息系统为例,提出了基础数据采集处理和数据库维护流程以及用于土地利用数据采集和处理等在实际运用中的解决方案,从而使大家了解GPS（CORS）技术与GIS技术在进行土地管理信息系统构建中的管理效率和应用层次。     

基于eSupermap的校园移动GIS设计与实现

移动GIS是新一代地理信息系统发展的方向之一,是运行在嵌入式计算机系统上高度浓缩、高度精简的GIS软件系统.利用Window Mobile平台结合GIS二次开发控件eSupermap,结合校园实际情况开发的一个Client/Server模式系统.在系统中实现了地图显示与基本操作功能、查询属性功能,实现了嵌入式设备与蓝牙...     

基于PDA/GPS/GPRS的移动GIS在电力系统中的开发与应用

探讨在Window CE环境下基于PDA／GPS／GPRS的移动GIS系统开发原理和方法,简述了其开发的基本理论,讨论了eMbeddedVC＋＋开发环境下PDA的GIS实时测图系统开发的具体技术．结合电力系统的实际应用,介绍了POCKETPC是如何实现一个GIS实时测图系统的。     

“3S”技术及其在土地资源管理中的应用

“3S”技术作为当前信息管理的高新技术,在土地资源管理中具有广阔的应用前景.在介绍RS,GIS,GPS及“3S”集成的基础上,简要分析了“3S”技术在土地资源调查、土地利用规划、土地利用动态监测等方面的应用,并结合当前的热点作出了展望.     

基于GPS和GPRS技术的输电线路巡检系统

针对传统的输电线路巡检方法越来越不能满足现代化的管理要求，研究开发了一种以掌上电脑为硬件栽体，将全球定位技术、无线传输技术和地理信息技术紧密集成，适用于现代管理手段的输电线路巡检系统．     

移动地理信息系统数据模型与3S集成关键技术

在掌上电脑硬件平台下，对地理信息系统（GIS）数据模型进行了研究．通过比较与分析，提出了一种面向对象的移动GIS数据模型，设计和实现了一个移动地理信息系统，探讨了系统设计和实现的关键技术，包括低内存环境下的大数据量组织与管理，与全球定位系统（GPS）、遥感等的集成技术，构建了一个可支持数据移动采集、定位与导航、多源数据融合等应用的集成应用服务环境．在上海某区进行试验，结果表明所提出的移动GIS数据模型和构建的集成服务环境具有较好的高效性与实用性．