There are three kinds of meanings of legal reasoning being commonly used . first , legal reasoning is the use of formal logic reasoning in law . second , legal reasoning is the reasoning of the norms of the laws 较为常用的法律推理的涵义有三种：第一，法律推理是形式逻辑推理在法律中的应用；第二，法律推理就是法律规范推理；第三，法律推理是法律适用的推理。
The hierarchical - based method is one of the clustering analysis methods to deal with big size data sets . with the limited resource , such as memory , cpu , and so on , it can get the best clustering result by use some algorithm structure 在聚类分析方法中，基于层次的方法是处理较大数据集中较为常用的方法之一，该类方法在有限的资源(如内存、 cpu )下，通过采用一定的算法结构，得到尽可能好的聚类结果。
This paper adopts the technologies which are often used in engineering field , such as grey system fuzzy mathematics neural network pca grey correlative degree , and established a series of practical models . the main topics of this paper are as follows : 1 文中采用工程领域里较为常用的技术，如灰色系统，模糊数学，神经网络，关联度，主成分分析等对流通领域里的部份物流信息进行了分析研究，建立了一系列较为实用的模型。
Overflow cofferdam and iversion tunnel are used offen to diverse the flow especialy where or the river discharge changing widely . there are many rivers in mountainous area in our country , so this kind of cofferdam is used relatively frequently in river divertion during construction 过水围堰和导流隧洞相结合的导流方式对于流量季节性变化悬殊的河流具有一定的适用性。我国的山区性河流较多，因此这种围堰过流的导流方式在施工导流工程中较为常用。
Since both are powerful systems in relatively common use , capable of organization , search and provision of information and oriented toward end users , they make representative subjects of a case study of the information service systems residing on the www 由于oclcfirstsearch和dialog两个系统分别是非盈利组织与盈利组织的代表，又都是面向最终用户的，集信息组织、检索、提供于一体的功能强大的信息服务系统，因而，以这两个在国内较为常用的系统作为研究www信息服务的案例具有代表性。
Some modeling of maneuvering target tracking is introduced in this thesis , and current statistical model is used as a basic target model . the arithmetic of kalman filtering based on the model is listed . on the foundation of state vector optimal estimation error matrix theory , the arithmetic of optimal estimation is presented , and target tracking simulation is taken 本文首先介绍了几种常用的机动目标跟踪模型,并把现在较为常用的“当前”统计模型作为本文研究的目标模型,并列出了基于该模型下的卡尔曼滤波算法;此外,在状态矢量最优加权估计理论的基础上,引入了目标状态最优估计误差协方差矩阵,提出了一种最优加权估计算法,并进行了目标跟踪仿真。
Introducing 9 english medical search engines and some chinese and english medical databases ( at this time there are no chinese medical search engines ) ; comparing and analyzing medical search engines in the scope of information , costs , if keyword or classification retrieval is provided and / or whether web site grading is provided . chapter three : chapter 3 discusses another way to search the internet - chinese common search engines 介绍internet上较为常用的9种英文医学搜索引擎(目前尚无中文医学搜索引擎) ，并对每一种医学搜索引擎的信息收录范围、检索功能、网站质量等方面进行对比分析：介绍internet上有影响的、常用的中英文医学数据库，对每一种数据库的收录文献侧重范围、提供的检索途径、收费情况等进行对比分析。
Pose some models about mobile agent security by new technology of cryptology such as dsa , kerberos authorization service . 3 . based on java , put forward some secure communication encrpytion algorithm and functions between agents and hosts or agent servers , such as dsa , md5 , timestamp and so on 在java环境下，结合java支持代码可移动、异构平台等优势，实现对于移动agent安全诸方面较为常用的移动agent之间及与主机之间安全通信的消息摘要，数字签名和安全框架中的时间戳安全策略等功能。
The thesis discussed the development status of remote virtual instrument in our country and others , the concept , characteristic and composing of remote virtual instrument . the thesis also expounded remote virtual instrument system in common use at present and made a all - sided comparison of them the virtual instrument system mainly involved pc bus acquisition system , gbip instrument control system and vxi instrument system the analysis and comparison of several vl ' s developing software technology and network computing modes were made 本论文系统地论述了国内外远程虚拟仪器的发展现状，远程虚拟仪器系统的概念、特点、构成；还对目前较为常用的远程虚拟仪器系统进行了详细的论述，并且做了全面的比较，其中主要涉及到pc总线数据采集系统、 gpib仪器控制系统、 vxi仪器系统。
