分布数据库

The experimental results show that the SOM method can get the best result for lesion recognition, the recognition rate of pork tissue and liver tissue are 96.1% and 91.7%, respectively. The recognition rate for PCA-LDA method is lower than that of SOM method because the feature of tissue lesion is linear indivisible.An effective clinic scheme is developed for NETE, and some problems are discussed. For example, nonuniform temperature field conduced by nonuniform energy field; tissue database construction; movement of HIFU transducer with ultrasonic transducer; rectification of HIFU parameters.

临床方案做了总体设计，并讨论了在临床应用中需要考虑的一些问题，如因HIFU辐射能量分布不均匀导致的焦域的温度场不均匀的问题，数据库的建立问题，HIFU换能器和超声探头的位移的问题以及HIFU辐射参数的确定问题等。

Occurrence records from 1864 locations and 34 environmental variables from Daymet datasets were gathered, four modeling methods including Logistic Regression, Classification and Regression Trees, Genetic Algorithm for Rule-Set Prediction and maximum entropy method were used to generate potential geographic distributions for Dreissena polymorpha in the continental USA. Then three statistical criteria including area under the Receiver Operating Characteristic curve, correlation and Kappa were calculated to evaluate the performance of the models, followed by analyses of major variable contributions.

论文以1864个美国外来入侵物种斑马纹贻贝定点发生数据和开放式基础地理信息数据库Daymet的34个环境变量为主要信息源，采用逻辑斯蒂回归、分类与回归树模型、基于规则的遗传算法、最大熵法4种途径，建立美国大陆部分潜在生境预测模型，从接受者运行特征曲线下面积、Pearson相关系数、Kappa值3个方面来检验模型预测精度，在此基础上分析斑马纹贻贝的空间分布规律及其环境影响因素。

The synopses based Chebyshev polynomials can be efficiently used to estimate frequency distribution of attributes of a given database relation.

基于Chebyshev多项式的概要能有效估计数据库关系属性的频度分布。

As an instance of practical application,the article explains the designing principle and function structure of database subsystem and application subsystem of Zhejiang ARIS.The system has the function of spacial data and attribute data pretreatment,data update,information searching,data processing,dynamic analysis,and thema...

以浙江省农业资源信息系统的建设为实例，探讨了数据库系统与应用系统两个层次的技术路线和功能结构，在省域尺度上，实现了直观描述农业资源的时空分布、动态分析区域农业资源状况。

This site also offers databases on insect collections at the Illinois Natural History Survey, literature on insect viruses and pathogens, soybean aphids, and the Therevidae.

这是美国伊利诺斯州自然历史调查局生态昆虫学中心的主页，提供有关生物防治、昆虫迁移和分布、城市昆虫生态等下级页面的链接，INHS的昆虫收藏数据库，以及昆虫病毒和病原体、大豆蚜虫等方面的文献。

Simple sequence repeats or microsatellites have been used as genetic markers in population genetics because of their abundance and length variation between different individuals. This study examined the SSRs in the completely sequenced Sclerotinia sclerotiorum and Botrytis cinerea genomes . The occurrences, relative abundance, relative density, most common motifs, and the longest SSRs in the two species were analyzed, and compared with other plant pathogenic fungal species, such as Fusarium graminearum, Magnaporthe grisea and Ustilago maydis .

利用公共的真菌基因组数据库资源，对核盘菌和灰葡萄孢基因组中SSRs的结构类型、分布、丰度及最长序列等进行了系统分析，并与已经研究过的禾谷镰孢菌，稻瘟病菌和黑粉菌等几种植物病原真菌基因组中的SSRs进行了比较。

The first work is distributing and demarcating data in order to send message.

分布式数据库系统中传输数据首先要进行数据的分布与分片操作。

Distributing means dividing data on the grounds of the needs of users and demarcating is putting different framework to varying places.

分片是按照需求将数据库进行分割，而分布是将不同的片段放置在不同的地理位置上。

In addition,the mean single scatting properties and extinction properties in visible to near infrared,middle infrared and long infrared wave bands of 8 typical water clouds are analyzed.

利用这个数据库，分析了8种常用的典型水云的单次散射特性分布，以及在可见到近红外、中波红外和长波红外三个波段的平均透过率特性。

3The multimedia technology was syncretized in Virtual Reality system, which can achieve the function of play and control of courseware.(4)Using mechanisms of DEF/USE and prototype reduced the browser burden

5采用ASP技术进行数据库的链接，将VCS虚拟校园系统在网上发布，实现了具有真正意义的分布性、三维性、交互性、多媒体集成性和境界逼真性的虚拟校园系统。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。