基于WWW的全文数据库信息服务系统的设计与实现

With the development of information service industry, establishing the full text database information ser-vice system based on WWW has become a trend. This article introduces a kind of this system, elucidating the technolgies and methods that can be used in the design of this system in detail. Finally, an example is given.     

China's ROV Completes a Record 6,000-meter Dive

正While performing its maiden mission in a recent scientific survey in the West Pacific,a domestic ROV (remotely operated vehicle) system achieved a national record by diving 6,001 meters underwater.Named SeaStar 6000, the system was produced     

A Support System to Tie Apron Strings to Debris Flow

Scientists from the Chengdubased CAS Institute of Mountain Hazards and Environment (IMHE) recently worked out a decision-making support system for disaster mitigation on debris fans in mountainous regions.As a domestic vanguard, the system plays a key role in the fight against debris flow and helping to reduce casualties.     

Addressing Impacts of Glacier and Permafrost Changes on the Qinghai Tibet Plateau

With a unique eco-environmental system, the Qinghai- Tibet Plateau plays a fundamental role in safeguarding the local socioeconomic development and has an irreplaceable position in ensuring eco-environmental security in China and in the whole of Asia.     

Impact of IEC61850 Based Digital Substation on Busbar Protection

A new international standard called IEC61850 is applied to the substation system recent years. This standard has many advantages, and it has brought a positive influence on the development of the power system. This paper concentrates on the impact of IEC61850 on the busbar protection which is one of the most important parts in the electrical power system. It begins by introducing the digital substation based on IEC61850, and then a more suitable busbar protection architecture is selected by comparing the integrated busbar protection and distributed busbar protection.     

Hidden mechanism may lead to mental deficiency

Myosin X,a member of the myosin super-family,is the commonest protein in muscle cells and contractile properties of muscles. However,a recent study clearly shows that it plays a key role in the axonal growth and path-finding during the development of nervous system.     

The Influence of Sampling Rate on the Stability and Dynamic Charaeteristecs of a Discretized System

The purpose of this paper is to discuss the influence of sampling rate on closed system which has been discretized from continuous system and in which the ZOH is not inserted, As an example, in has been discribed for the second order system that the impoper choice of sampling rate may cause the unstability of a discretized system, though its original continuous system is stable. The change of locations of poles due to the variations of sampling rate are shown in plots. Proper sampling rate is suggested. Different methods of discretization are compared, and the bilinear transform is recommended.     

A Comparative Study of Systems of Utility Model Patent Search Report in Mainland China and Taiwan Region

I. An overview In the patent system of the civil law countries, the utility model patent, also known as the "petty invention", is granted to protect petty inventions that are not highly inventive, but very useful. For example, in the patent systems in Germany and Japan1 can be found provisions concerning utility model patent. After the patent system was launched in mainland China on 1 April 1985, the utility model patent is well received by the industry thanks to the adoption of the "preliminary examination" system to applications for the patent for utility model and the expedited patent grant, and the number of applications of the class is on a rise each year. The system for utility model patent was put in place in 1949 in the Taiwan     

利用H2O-NaCl-CaCl2体系水盐化合物和冰的融化温度计算NaCl/（NaCl＋CaCl2）比值和盐度的方程

The composition of fluid inclusions in the H2O-NaCl-CaCl2 system has been generally graphically estimated using the melting temperatures of hydrohalite （ Tm-HH ） and ice （ Tm-ice）. Here we present two equations that can be used to calculate the relative proportion of NaCl （ i. e. , NaCL/[ NaCl ＋ CaC12 ] , or XNacl ） and the total salinity （ i. e. , NaCl ＋ CaCl2, wt% ） for fluid inclusions with ice as the last melting phase. XNacl can be calculated from Tm-HH using the following equation： y = （a＋bx）^-1/c where y is XNacl, x is Tm_HH , a =0. 33124402, b =-0. 031518028, and c =0. 22932736. In the cases where only Tm-ice is measured and Tm-HH is not known, Tm-ice can be used as the maximum possible Tm-HH to calculate the maximum value of XNacl using the above equation. In these cases, the following equation can be used to calculate the maximum total salinity： y=（a＋bx＋cx2） l where y is salinity, x is Tm-HH , a =0, 057184817, b =0. 00078565757, and c = 5. 7262766E-6. Because the isothems in the field of ice are sub-parallel to the NaCl-CaCl2 binary side in the H2O-NaCl-CaCl2 ternary system, the errors in salinity calculation introduced by the above approximation are small （ less than 2 wt% ）. A Windows program for calculation of XNacl and salinity is available at ： http ：//uregina. ca/-chiguox.     

Pooling Observation Data Together to Serve Comprehensive Purposes--Ms. Barbara Ryan on the Global Earth Observation System of Systems

＂Regardless of the particular reason an observation system was put in place, we are expanding the use of the data from that system to help users in other areas,＂ Ms. Barbara Ryan answered when asked about the necessity and importance of connecting the existing observation and research networks of different disciplines and for different purposes together in an interview with BCAS reporter SONG Jianlan, at a brief break between meetings on April 23 during the session of the 35 th International Symposium for Remote Sensing of Environment （ISRSE35）. Now let＇s follow her to have a glance at this ＂system of systems＂.     

Windows CE6.0嵌入式应用程序开发初探

在工业及军事领域系统控制的应用中,嵌入式技术被越来越多地应用,并受到越来越多的重视。WindowsCE系统及其应用程序开发技术因其简单灵活的开发方式和美观友好的用户界面等优点而受到嵌入式应用程序开发人员的喜爱。本文以Idea6410开发板为Windows CE系统的目标设备,研究了Windows CE的系统定制与应用程序开发方法,通过简单程序的设计与调试,得到并验证了Windows CE系统定制方法、软件开发环境的架构方法和应用程序设计与调试的基本流程,为Windows CE软件在工程中的应用打下坚实基础。     

基于Windows CE的串行通信

Windows CE是面向移动计算和嵌入式应用的嵌入式操作系统,特别为有限的硬件资源设计了多线程、多任务和具有优先级的操作系统环境,且具有强大通信能力,RS 232串行通信是Windows CE支持的最基本的通信方式。本文主要致力于Windows CE下的串行通信,详细介绍了在Windows CE下实现RS 232串口通信的方法和过程,包括如何打开、配置、读写、关闭串口和使用多线程来实现类似的异步串口通信,深入讨论了正确实现通信的几个关键问题。     

基于MIPS的Win CE多媒体操作系统移植的研究

本文介绍了Windows CE嵌入式操作系统及其系统定制和调试工具Platform Builder,以及MIPS处理器和MIPS嵌入式系统下Windows CE的BootLoader引导模式.提出了定制具有多媒体功能的新内核并下载到开发板的方案,详细论述了本方案中BootLoader的烧写以及NK.bin的下载.最终构建了一个高性能、低功耗、可靠性高的特制的Windows CE嵌入式系统.     

基于Windows CE的图像传输研究

Windows CE是嵌入式系统中一个重要操作系统,嵌入式产品中的视频功能是应用比较广泛的技术。基于Windows CE操作系统,利用TCP通信协议,创建客户端和服务器,在开发板和PC机之间实现图像传输。     

DOS命令在气象信息系统维护中的应用

应用操作系统提供的各种DOS命令可简单高效地进行气象信息系统的维护,本文详细介绍了windows系统下的DOS命令在文件操作、目录操作和网络故障诊断上的应用,实践证明灵活应用dos命令可以方便地解决大部分的windows系统维护问题。     

Windows 2003的RIS在网络管理应用中的一例

Windows Server 2003中提供了RIS和Installer两种技术,前者是远程安装服务,通过Windows Server为网络中的客户机提供操作系统的远程安装,后者则是专门解决在Windows网络环境中发布应用软件的需求。此外,Windows Server 2003还提供了快速部署变更的功能。     

基于Windows的父子线程控制实验设计

目前基于Linux系统的“操作系统原理”课程父子进程控制实验,都是通过调用Linux系统的函数fork0创建子进程的方法来实现。为了使高职高专学生在学习课程的同时提高在Windows系统下的编程能力,设计了基于Windows的父子线程控制实验。     

浅谈如何配置局域网中的通信协议

本文基于局域网环境，取windows NT为主，同时兼顾NetWare Windows98等操作系统,介绍和分析了常用通信协议的特点、性能和必要的配置方法。不同的网络协议都有其存在的必要，每一种协议都有它所主要依赖的操作系统和工作环境。     

Linux与Windows间文件定时自动同步的实现

在日常文件管理和数据库备份等操作中,经常会遇到这样的情况:我们需要在无人值守的情况下完成文件夹的同步过程,以实现周期性的备份,有时甚至是不同操作系统间的文件夹需要同步。在两台Windows主机中,要实现文件夹的同步,用Windows系统自带的公文包即可,操作过程也比较简单,故不在本文讨论范围之内。本研究实现了本地Windows主机与远程Linux主机,本地Linux主机与远程Windows/Linux主机目录的定时自动同步。实例在Windows XP SP2和CentOS 4.6&CentOS 5.2系统下测试通过。     

基于Android平台的应用开发研究

Android平台是Google推出的新一代智能手机平台。深入讨论了Android平台的系统架构、应用程序的构成,并详细介绍了在Windows系统下的Android开发环境的搭建。