关系数据系统

The paper takes the project of Xi'an international airdrome infrastructure management information system as an example and validates its feasibility and demonstrates its applicant value, which realizes the share of infrastructure data and establishes the basic for further development.

在现阶段，由于面向对象数据库自身发展的不成熟和互操作技术的不完善，本文提出采用较为先进的空间数据引擎技术结合关系数据库或对象关系数据库建立统一的数据模型和统一的数据库管理系统，打破空间数据固有的管理模式和界限，实现空间数据和其他属性数据的集成，为地理信息的共享奠定基础。

The indiscernibility lattice corresponding to indiscernibility context can be used to computing the reduct set of any subset of attributes in information system, and thus can serve as a framework for discovering functional dependence that holds in relational data.

而不可区分背景所对应的不可区分格则可以用于信息系统中任意属性子集的缩减集计算，于是它可以用作一个框架结构来发现关系数据中所成立的函数依赖关系。

The measurement system error model analysis is introduced into power system real time network state analysis as an important part for the first time, which can improve on the state estimation quality and provide the capability to monitor the operation of the measurement system; 2. The theory and algorithm of the on-line estimation and update of measurement noise variance based on the relation between the residual variance and noise variance. The statistic properties of the sample variance are discussed and the relation between the estimation precision and sample size under given confidence level is derived; 3. The theory and algorithm of detection and identification of measurement bias are presented, which is based on the relation between residual mean and noise mean. The statistic properties of sample mean are discussed and the relation between estimation precision and sample size is derived; 4. The Givens orthogonal transformation algorithm is selected to be the essential algorithm of state estimation, the fast orthogonal transformation algorithm with damp factor and the algorithm which can handle the zero injection measurements efficiently are presented; 5. The quantity analysis theory of bad data detectivity and identifibility are presented, which describes the relation between the elements in matrix W〓 and bad data amplitude and can provide the theory base for measurement system design and valuation.

一、首次将量测系统误差模型分析做为一个环节引入电力系统实时网络状态分析中，为EMS系统增加了实时监视系统运行、修正量测系统误差模型的新功能，进一步发挥了实时网络状态分析应用软件的潜力；二、首次提出了应用样本方差在线估计与修正量测系统误差方差的基本理论，讨论了样本方差的统计性质和概率分布，推导出了样本容量、估计精度和置信度之间的关系，给出了在线估计与修正量测系统误差方差的算法；三、首次提出了应用样本均值在线检测与辨识量测偏差的基本理论，讨论了样本均值的统计性质，推导了样本容量、估计精度和置信度之间的基本关系，给出了在线检测与辨识量测偏差的算法；四、在状态估计算法设计中，以Givens变换算法做为基本算法，提出了快速正交变换阻尼因子法和可以有效地处理零注入量测的混合法，并对实时应用中的一些问题进行了讨论；五、提出了不良数据可检测性与可辨识性的定量分析理论，揭示了描述量测系统配置、网络结构与参数的残差灵敏度矩阵中的元素与不良数据的幅值在可检测、可辨识能力上的定量关系，为量测系统配置设计与评价提供了理论基础；六、综合国内外最新研究成果，采用自适应自回归预测技术和稀疏矢量技术，构造了较完善的不良数据检测与辨识算法。

Those four classification models work well in first class of Chinese Vegetaion Division. The KAPPA value of Holdridge Life Zone System,at high value of 0.57,would probably more effective than the others. But in specific area,like tibetan plateau,all of those models need to be refined or consider more elements and factors. This research also points out that the concept and technology of Digitall Earth would promote and push forward the climate-vegetation relationship research,especially in climate-vegetation factors,climatically parameters and modeling parameters,real time dynamic monitoring,effectively managing the magnitude data of climate-vegetation relationship information and supporting the mainframe of Functional Types Modeling Library.

这四个传统的分类方法在中国植被区划一级分类上是适用的，Holdridge生命地带系统KAPPA一致性指数达到0.57模拟效果优于其它三者，但在特定地区，如青藏高原，所有模型均需改进优化或启用新的模型因子才能很好地区分植被亚地带，本研究还指出，数字地球技术的应用有助于推动气候—植被关系的研究，尤其在气候—植被指标的大范围实的动态监测、气候—植被关系数据的海量信息高效、有序基础管理和功能模型库支撑框架体系方面。

To analyze the intersystem EMC more distinctly, the method based on port data is presented. The coupling relation between ports is analyzed and the corresponding figure is drawn in the method. EMC of the intersystem can be analyzed by coupling-function and the interference data of port, which are obtained from test .calculation or specified standard.

为了更清晰地分析系统内电磁兼容性，提出了基于端口数据的系统级电磁兼容性分析方法，该方法分析系统内各部件端口之间的耦合关系，画出耦合关系图，然后根据端口的干扰数据（测试、计算或标准规定的数据）和传递函数分析系统的电磁兼容性。

Who communicates by letter, business synthesizing service as a telecommunication , data and information network to be in motion and do business, advantage , broad customer resource and fine cooperation concern the have distinctive telecommunication background , tremendous technology and fund, The company is engaged in synthetical telecommunication serving , synthesizing information service , broadband access , computer network information system integration , intelligent building structure-rization synthetical arrangement of wire system , building world automation navar , data telephone programme-controlled telephone switching boards system , video frequency convention system and so on mainly; Be in the data communication field , the new net of halo especially .

北京光环新网数字技术有限公司是北京通信光环电信集团下属的一家股份制公司，作为一个电信、数据和信息网络综合服务运营商，具有独特的电信背景、雄厚的技术和资金优势、广泛的客户资源和良好的合作关系，公司主要从事综合电信服务、综合信息服务、宽带接入、计算机网络信息系统集成、智能大厦结构化综合布线系统、楼宇自动化控制系统、数据电话程控交换机系统、视频会议系统等；尤其在数据通讯领域，光环新网公司拥有其它公司无法比拟的综合技术实力和线路网络资源优势。

In this dissertation,Co-Cr2O3 and Fe-Cr2O3 granular films with superiorproperties have been successfully fabricated by RF co-sputtering technique underroom and 77K substrate temperatures for the first time.The microstructure,electrical transport and magnetic properties as well as their relation to TMR effectare systematically investigated by various techniques such as X-Ray diffraction,transmission electron microscopy,electrical diffraction,X-Rayphotoelectron spectroscopyand VSM,etc.,the change of electrical transportand magnetic properties in these films with their microstructure is also shown.Someinteresting and valuable results have been obtained after the theoretical fitting ofexperimental data with the existed theory.The temperature dependence of TMReffects in these films and the way to get larger TMR effect is also studied.Our mainprincipal results obtained are as follows:(1)Microstructure and Magnetism

在本论文中，我们采用射频共溅射方法，在室温及77K的衬底温度下首次成功地制备了性能优异的Co-Cr2O3及Fe-Cr2O3系列颗粒薄膜，并利用X-Ray衍射、透射电镜、电子衍射、X-Ray光电子谱及宏观电性及磁性测量等手段详细地研究了Co-Cr2O3颗粒膜的微结构、电性、磁性及它们与TMR效应之间的关系，系统地研究了薄膜的电性和磁性随薄膜微结构的变化，通过实验数据点的理论拟合，得出了一些有价值的物理信息，探讨了磁电阻效应的温度依赖性及获得较大TMR效应的途径，主要内容可概括如下

Finally, we carry out the Rough Set-Based method classing customers and obtain comparatively good result of experiment, which prove this paper is available.

通过对客户关系管理系统中获取的数据进行实验，本文实现了相应的客户分类功能，并获得了较好的效果，证实了本文采用的客户分类方法具有一定的实用价值。

By analyzing the syntax of triggers, summarizing the relation of data, combining the practical application,the relation of data's trigger is obtained That is data's transform of different database system , different disposal of same format's data , amalgamation of different format's data and existent relation of cascade connection .

为了提高触发器性能，对触发器的语法进行剖析、分解，数据关系应用进行归纳并结合大量的实践应用，得出数据触发关系主要有：不同数据库系统之间的数据转换、同类数据进行不同处理、不同数据融合到一起和数据之间存在的级联关系。

In this paper a novel ontology-based data semantic fusing frame named ODSF is introduced, the basic element of ODSF is dataset its semantic is obtained by the mapping between the domain ontology and dataset. ODSF adopts nested relation model to represent the schema information of dataset, and realizes the data fusing from coarse-grained level to the small-grained level by wrapping the datasets registered in virtual database as a new dataset. We also present the semantic model of ODSF, query executing process and algorithm of virtual database, so ODSF can provide the semantic supported and QoS supported data access for user. The experiments demonstrate our work and show the feasibility and effectiveness of ODSF and its key techniques.

本文提出了基于本体的语义数据容融合方法ODSF；该方法中的基本元素是数据对象，通过数据对象和领域本体之间的映射关系来表达数据对象的语义，使用嵌套关系模型来表达数据对象的模式信息，通过一个网格节点中集成的所有数据对象作为下一个节点的数据对象来实现数据资源由粗到细的融合；定义了ODSF的语义模型，给出了虚拟数据库的查询执行过程和算法，可以为使用者提供具有语义支持、服务质量保障的数据访问服务；通过原型系统验证了ODSF中理论和关键技术的正确性和可行性。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。