查询词典 data base key

However, the development and the application of data base system cannot satisfy the requirement of the information system. From abundant existing data resource, people cannot acquire the potential association rapidly and efficaciously.

然而，现有数据库系统的开发应用无法适应人们对信息系统的高要求，无法从现有数据资源中快速、有效地获得信息的潜在联系。

In the first place, on the base of studies concept ascending and attribute dependency, we forward a method to select attribute value partition, which can effectively resolve the problem of minimum faith and minimum support, in order to induct potential knowledge from standard discrete symbolic data, the dissertation studies join operation for generating candidate set and delete operation for deleting redundant equivalence class, and propose an recursion algorithm to realize highly generalization of data.

首先在研究概念爬升方法和Rough集理论中属性隶属度原理的基础上提出了一个划分属性值区间的算法，该算法能够有效的解决最小支持度问题和最小信任度问题。进而为了从已离散化的数据中概括出潜在的规则，研究了生成侯选集的交运算方法和排除冗余等价类的删除方法，然后利用循环推进机制实现对数据的概括。

Further, based on the data from Statistical yearbooks and tables, the author edits the Extension of the Energy Input-holding-Output table of Xinjiang in 2004 and speculate the coefficient of inter-industrial impact and sensitivity, setting up crucial data base for studying the energy and economic issues in Xinjiang province.

在此基础上，根据各种统计年鉴和报表中的数据进一步编制了2004年新疆能源投入占用产出延长表，测算了产业间的影响力系数和感应度系数，为研究新疆能源和经济问题奠定了重要的数据基础。

In this paper, first, we discuss the mathematical model and application of data warehouse on the base of deep research on business intelligence and data warehouse architecture.

首先，本文回顾了商业智能的概念和数据仓库的基本原理，在此基础上研究了数据仓库的数学模型及其应用。

Base vectors are selected for formulating the nonlinear mapping. An approximate explicit expression is formed by using the Nystrm method for nonlinear mapping which is not available originally. The data in the nonlinear input space is mapped into some linear feature subspace and fisher linear discriminant analysis is computed for the mapped data.

首先提取基向量；然后采用Nystrm方法，以基向量为训练样本，将形式未知的非线性映射近似表达为已知形式的非线性映射，这种近似的非线性映射将变量由非线性的输入空间转换到线性的特征子空间；最后对映射数据进行线性Fisher判别分析。

The purpose of the design is to control the local MODEM to dial remote terminal by telephone line base on Linux operating system. At the same time,it can make the data transmit between two MODEMs to achieve the purpose of data transportation.

本设计基于Linux操作系统，控制本地MODEM通过电话线网向异地终端机所带MODEM拨号，并实现两台MODEM之间数据传输，达到两台计算机之间数据通信的目的。

The base of computer culture, c programmer, fundamentals of analog electronic circuits, fundamentals of digital electronic circuits, data structure, principles of computer composition, operating system, discrete mathematics, computer network, principles of microcomputer, 8086/8088 macro assembler language; multimedia technology; the principles of database; oopl( errorobject oriented programming language); fundamentals of compiling; software engineering; numerical computational method; mcs51/96 principle of single-chip computer; artificial intelligence; computer system organization; digital interface and digital circuits; java programming language; data structure; operating system; computer network; technology of electronics, etc.

计算机文化基础、c语言程序设计、模拟电路基础、数字逻辑电路基础、数据结构、计算机组成原理、操作系统、离散数学、计算机网络、微型计算机原理、8086/8088宏汇编语言程序设计、多媒体技术、数据库原理。面向对象语言程序设计，编译原理，软件工程基础，数值计算方法、mcs51/96系列单片机原理与应用、人工智能、计算机系统结构、数子接口技术与电路、数据库设计基础 java语言，数据结构，操作系统，计算机网络，电子技术等。还有一些选修的课比如：tcp/ip网络协议分析基础、oracl数据库原理，db2数据库原理等。

Data standardization and normalization is the base of the data integration.

数据的规范化和标准化是数据集成的基础。

This system makes full use of VEP, SQL data base technique and GRID/REPORT data output function.

该系统充分利用了VFP提供的面向对象的特征、SQL数据库访问技术和GRID/REPORT数据输出功能。

The evolutionary relationships were investgated by comparing the results from molecular data alone or molecular data combined morphological characters using different analysis methods: maximum parsimony by PAUP(superscript *) 4.0 and Bayesian inference by MrBayes 3.0B4. Base composition and ti/tv of 28S rDNA D2 regions were analyzed by PAUP(superscript *) 4.0. The results showed that GC content of the 28S rDNA D2 gene sequences of subfamily Euphorinae ranges from 40.00% to 49.25%. Transversion frequency of sequence variable sites among species of Euphorinae was higher than that of transition. The subfamily Euphorinae was proved to be a paraphyletic group with close relationship to subfamilies Neoneurinae and Cenocoelinae; only two tribes, Meterorini and Microctonini, were proved to be monophyletic groups; Centistini, Cosmophorini, Euphorini and Dinocampini were paraphyletic groups; the basal position of tribe Meterorini within Euphorinae was partially supported by our phylogenetic trees, and tribe Microctonini was proved to be a group at the top of the trees.

结果表明：优茧蜂亚科的28S rDNA D2基因序列片段的GC%含量在40.00%~49.25%之间变动，而对于碱基替代情况来讲，优茧蜂亚科各个成员间序列变异位点上颠换大于转换；不同的分析和算法所产生的系统发育树都表明目前根据形态定义出的优茧蜂亚科Euphorinae不是一个单系群，而是一个与蚁茧蜂亚科Neoneurinae和高腹茧蜂亚科Cenocoelinae混杂在一起的并系群；在优茧蜂亚科内部，悬茧蜂族Meterorini和食甲茧蜂族Microctonini（排除猎户茧蜂属Orionis）为单系群，而宽鞘茧蜂族Centistini、大颚茧蜂族Cosmophorini、优茧蜂族Euphorini、瓢虫茧蜂族Dinocampini为并系群；悬茧蜂族Meterorini在优茧蜂亚科Euphorinae内位于基部位置的观点得到部分的支持，同时食甲茧蜂族Microctonini被判定为相对进化的类群。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！