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After analyzing the merit and lack of 9I model, the main idea is proposed: to distill some basic topological relations from 9I model, of which the composite topological relations of complex objects are made up. In detail, the composite topological relationships between region and region, line and line, line and region are particularly discussed;(2)Analyze the characteristics and inner relations of cadastral features. According to the expressional model of complex topological relations, the author discovers the possible topological relations between parcels, parcel lines and parcel points. In addition, sum up the general topological relationship rules of cadastral data.(3) Then the topological relations model is extended to the spatio-temporal data. Time in cadastral database and change semantic are discussed. It's redefined that spatio-temporal topological relations is composed of time, location, status and event relation. Spatio-temporal topological relationships can be represented by extended 4I model. Taking cadastral parcels as example, there are different possible spatio-temporal topological relationships between parcels when they are extended, shrunken, split, merged or others. Thus, some deductions are drawn that, for example, if parcels have be coexisting for some time they are impossible to be overlapped. Furthermore, the parents of parcels alternated and their possible change types can be detected by their spatio-temporal topological relationships.(4) Before carrying out the experiment, the calculation method must be designed.

具体研究工作及成果如下:(1)根据点集拓扑理论中与拓扑空间相关的概念,本文对空间的点、线、面进行了重新定义,以区分对象的复杂性;分析了9I模型在表示简单对象方面的优点,以及在表达复杂对象上的不足,阐述了本文的研究思路和解决方案,并以复杂的面面、线线和线面为例详细探讨了复合拓扑关系的表达方法;(2)分析了地籍权属数据和地类数据的内涵、特点和要素之间的联系,根据复杂对象的拓扑关系表达模型,本文讨论了宗地、界址线、界址点之间,图斑、线状地物、零星地类之间可能存在的拓扑关系和形式化表达方法,归纳总结了地籍对象的拓扑关系满足的约束性规则;(3)将拓扑关系的研究延伸到时空领域,从地籍对象的时态性出发,本文阐述了地籍数据中时间的含义和变化语义描述的需要;从时间、位置、状态、事件等之间的拓扑关系方面,重新系统性地进行了时空拓扑关系的定义;研究了一维时间和二维空间的集成表达方式,以宗地、界址线为例,分析了变更前后不同时间区间里可能的拓扑关系,探讨了时空拓扑关系对时空变化操作类型和变化语义的推理方法和意义;(4)为实现空间拓扑关系的查询分析等应用,本文研究了空间拓扑关系的计算方法。

Based on the gray assembles, the trapezium gray analysis is presented, and it is applied to environmental quality assessment.

以灰色聚类为基础,提出了梯形灰色聚类分析法,并将其应用于环境质量评价之中。

We at last got six compounds of Schiff Bases of triazole derivaties and five compounds of 1,3,4-oxadiazole.

由于酰肼便宜易得,因此我们选取了两种酰肼通过几种不同的方法合成了五种唑类化合物并以其中三种化合物为基础对其进行修饰,得到了六种含三氮唑取代基的席夫碱和五种1,3,4-噁二唑类衍生物。

Some approved aneugens Trip terygiuwlIypogaucum (evelHutch, colchicine, thiabendazole, a tropine sulfate,d-ubocurarine was added into the reactive system respectively and the changes of their absorption values were taken down during different periods under the conditions of 37 0C and 350nm .

本研究通过多步聚合和解聚合反应从猪脑中分离纯化微管蛋白,建立微管蛋白的体外聚合和解聚合反应平衡体系,并将已证实的非整倍体诱发剂(昆明山海棠根部水抽提物、2-(4′-噻唑)苯丙咪唑、硫酸阿托品、d-筒箭毒碱)分别加入此反应平衡体系中,于37℃、350nm条件下,记录此体系不同时期的吸光值变化,与阳性对照物和溶剂对照处理平衡体系后的吸光值在相同时间点作比较,以此评估这几类非整倍体诱发剂对离体条件下的微管蛋白聚合的影响,寻求这几类非整倍体诱发剂是否可通过抑制微管蛋白聚合作用途径而诱发非整倍体。

The thesis has investigated into the evolution of the matching frame of the two kinds of conjunctions "sui" and "dan" in Chinese history in an all-around way, and probed into the feature of their evolution ,and explained why they have evolved in such way from the typologic angle.

文章较全面地考察了汉语各个历史时期的"虽"类和"但"类连词匹配框架的发展演变,探究它们的发展特点,并从类型学的角度解释其发展演变的重要原因。

This is UNINDENTED code that resides outside of our class, the code that uses our class.

这个类以外的代码并没有正确的缩进,它用于调用我们的类。

Through the authentic proof investigation and literature research, this article has illuminated the reason why the populace interest expression and the political participation enthusiasm of our country upraise warmly in the transition period, and the eight kinds of groups listed above make up the rich group, middle class group, the ordinary community and the lower orders community. The article analyses their most urgent interest demand of politics, economy and culture, thus finds the insufficiency and problem of current interest expression mechanism of our country.

四、通过相关的实证考察与文献研究,本文揭示了转型期我国民众利益表达、政治参与热情高涨的原因,即利益需求的多元化与民主、法制的不断推进,并将前文八类现有群体归总为富有群体、中产群体、普通群体和下层群体四个大类,对他们在政治、经济、文化等方面最迫切想表达的利益需求进行了剖析,从而在此基础上挖掘出我国现有利益表达机制中存在的不足与问题。

In this paper we've compared several predicate of first order operators, and proposed an improved algorithm which is based on the automatic double threshold value improvement algorithm based on the maximum inter-cluster distance and intra-cluster variance ratio.

在边缘检测算法的选择上,比较了几种常用的一阶微分算子的优劣,并在Canny算子的基础上提出了基于最大类间、类内距离比值的自动双阈值改进算法。

To optimize the performance of the hybrid model,it applies k-means algorithm to perform vector clustering in the LSA vector space while the density function is used to initialize the centroid.

研究了潜在语义分析理论及其在连续语音识别中应用的相关技术,在此基础上利用WSJ0文本语料库上构建LSA模型,并将其与3-gram模型进行插值组合,构建了包含语义信息的统计语言模型;同时为了进一步优化混合模型的性能,提出了基于密度函数初始化质心的k-means聚类算法对LSA模型的向量空间进行聚类。

ABSTRACT: Random amplified polymorphic DNA was used in analysing the relationship among twenty-six speices of Amanita from Mangshan, Hunan. Of 40 primers, 6 ones generated reproducible RAPD profiles, and each one produced 1-10 bands. Two primers (OPG15 and OPH04) could differentiate 26 species of Amanita by its RAPD profiles. The similarity coefficients obtained from profiles generated by six primers among Amanita were about 20-60%. A dendrogram was constructed using average linkage clustering for clustering analysis. It indicated that there were two groups in 26 species and some species with ring and membranous volva clustered a group which coincided with morphological classification.

本文对采自湖南莽山的26种鹅膏菌属真菌进行了随机扩增多态性DNA分析,40个随机引物中筛选出扩增效果较好的6个引物,每个引物能产生1~10条DNA条带,获得的RAPD谱带清晰并呈现多态性OPG15、OPH04两个引物扩增的RAPD谱带能将26种鹅膏菌完全区分开来,通过6个引物的RAPD分析获得的平均相似性系数表明种与种之间的相关系数在20―60%之间,平均链锁聚类分析可将26种鹅膏菌分为二大类,且一些具菌环和苞状菌托的种类聚在一起,与形态分类基本相吻合。

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The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作:对伸臂位于顶部的单层框架—筒体模型进行分析,提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。

Its advantage is that it can be used in smaller units.

其优点在于可以在较小的单位中应用。