查询词典 spatial model

C The Kriging model of spatial genetic structure and its applications in human population genetics were put forward.

建立了人类群体遗传结构空间估计的"Kriging"模型和反向距离加权模型，并给出了它们的应用条件。

Secondly, by establishing a discrete time Markov model with spatial reuse for a MANET, we analyze the performance of the network under the AODV routing protocol. The average route length and the probability to communicate within a limited hop distance are obtained. Several performance parameters of the route discovery and route maintain process are analytically studied, such as the probability generating function and the expectation of the flooding distabce. the probability that a route is discovered by a query packet with a "hop limit", the probability that a request packet finds a valid route, the average time needed to discover a valid route and the cost to successfully route a data packet to its destination. Furthermore, we present a concrete example based on the transmitter characteristic of directional antennas and obtain the corresponding results.

建立了移动自组网络空间可重用的离散时间马氏链模型，得到了AODV路由协议下网络任意两节点间的平均路由长度、在指定"跳限"要求下通信的概率；对随选型路由协议下路由发现和路由维护过程中若干网络性能参数进行了解析分析，如网络中任意两节点问的泛洪距离的概率母函数及其期望、限定泛洪步数时成功寻路的概率、发现一条有效路由的平均时间、成功路由的代价等；并基于定向天线的发射特征给出了一个具体实例，分析计算了相应的网络性能参数。

We adopt the frequency-domain-based affine model and optical flow equation. First, we compute the larger spatial transformation. Then, we refine the parameters using projective transformation.

我们采用的是基于频域仿射模型的光流方程，即首先计算比较大的空间变换，然后再对其进行透视变换求精，实验证明这样既可以获得较好的效果，也提高了计算速度。

The management and quality analysis of the primitive images have been analyzed and studied in this paper, of which the content and structure are as follows:Firstly, the developing background and the meaning of the management and quality analysis of the primitive image, as well as the trends of the management and data quality of the image database studied both in and out of our country, have been discussed in detail.Secondly, the developing direction of the technology of the remote sensing image and the importance of the remote sensing images in the field of economy nowadays have been analyzed systematically. And it is pointed that the primitive image with the elements of interior and exterior orientation will become more and more important as a sort of image production.Thirdly, the hierarchical structure of database, especially the SQL Server adopted in this system, has been deep studied and analyzed in the aspects of Applying Program Interface, Internet Data Connector and ActiveX Data Object.Fourthly, the methods of assessing the quality of the remote sensing image have been put forward in the terms of geometry, construction and the integrality of the assistant information.Fifthly, the model of propagation of errors of the precision of the ground coordinates has been calculated in the steps of inner orientation, spatial resection and answering based on the deep analysis of the principles and processes of inner direction and space resection, which have also been experimented and analyzed in term of numerical value.Finally, the total design and the idiographic realization of the sub-modules have been introduced in detail, based on which the design and development of this system are realized in combination with the program languages such as VB6.0, VC6.0 and SQL.

本文针对原始影像的管理与质量分析进行了深入的研究与探讨，主要内容包括：(1)首先对原始影像管理与质量分析系统的研制背景和意义进行了详细论述，并对影像数据库管理和数据质量研究的国内外动态作了介绍；(2)对遥感影像技术目前的发展趋势以及遥感影像在国民经济生活中的地位进行了深入的分析，并指出附带有内外方位元素的原始影像作为一种影像产品将越来越会引起人们的重视；(3)对数据库的体系结构进行了深入的研究与分析，尤其是对SQL Server数据库的体系结构，从编程接口、Internet数据连接器和ActiveX数据对象三个方面进行了深入剖析；(4)从几何质量、构像质量和附属信息的完整性三个方面提出了对遥感影像质量的评定方法；(5)基于对内定向和空间后方交会原理及过程的深入分析，推导出了从内定向到空间后方交会再到最终求解地面坐标的误差传递模型，并对上述模型进行了数值实验和分析；(6)对原始影像管理与质量分析系统的总体设计和各模块功能的具体实现进行了详细的介绍，并在此基础上联合VB6.0、VC6.0和SQL等编程语言，实现了系统的设计与开发。

Before 1970s, the supply model of government single-center was established and the research was focused on the location and efficiency according to public goods theory; During the l970s-1990s, the spatial equity of the distribution of public service facilities has been researched from theory of dual-main joint supply; From 1 990s to date, based on the theory of diversified purveyance, society differentiation and accessibility has been the research focus from the perspective of social restructuring.

结果表明：战后西方国家城市公共服务设施供给研究历经3个阶段：二战后至70年代，基于公共物品理论和社会公共服务的政府单中心供给模式，布局区位及影响机制是城市公共服务设施研究的重点；70-90年代，从公共服务的双主体联合供给理论出发，重在探讨城市公共服务设施供给的空间公平；90年代以来，在公共服务多元供给理论基础上，从社会结构的深层次视角研究公共服务设施供给的可达性差异及社会空间分异。

The model was applied in Guangdong, China for addressing the spatial distribution and long-range transport of pyrene.

结果表明，该模型能够实现既定目标，在获得源区排放资料的基础上，还可以获得由此形成的浓度空间分布格局以及相关的输送通量。

Alzheimer′s disease animal models were made by damaging bilateral nucleus basalis of Meynert of elderly rats (20-22 month) with quinolinic acid(150 nmol in 2 μL for each NBM, given d 3 after administration of test drugs). Activity of choline acetyltransferase was measured by radiochemistry assay. One time training passive avoidance step-down and water-maze spatial localization task were used to observe effects of ginsenoside of stem and leaf in combination with choline on learning and memory of AD model rats.

应用喹啉酸（每侧150 nmol，2 μL，给受试药后d 3注射）损毁老年大鼠双侧Meynert基底核制备阿尔茨海默病动物模型，放射化学法测定胆碱乙酰基转移酶活性，一次性训练被动回避跳台实验和水迷宫空间分辨能力测试，观察人参茎叶皂甙和胆碱合用对AD模型大鼠学习记忆的影响。

Using a neural network algorithm to establish a typhoon rainfall model and to seek the nonlinear relations between the relevant parameters and rainfall intensity is a rational approach. The rainfall data used in this study include rain gauge data and radar data, and is able to reflect the spatial distribution of the precipitation pattern.

雷达具有空间侦测能力，利用地面雨量计的雨量资料与雷达回波的资料，可以将空间中的降雨分布趋势表示出来；本研究当中所决定的台风降雨因子是根据过去相关研究文献所整理出来，而这些台风降雨因子是否能完全模拟台风降雨的机制，尚待观察。

The authors gave the spatial difference forecast model for rainfall distribution based on different thermal backgrounds.

根据热力背景的不同，建立了城市降雨空间差异预报模型。

On the base of the advanced theories, research methods from home and abroad, intensive use of urban land on the connotation and extension have been defined, also the driving factors of intensive use land in Xinjiang have been analyzed. As the case of nineteen cities of the Xinjiang Uygur Autonomous Region, from the land input level, the extent of land use, land-use efficiency and land use in four areas of eco-environmental quality, the establishment of a level of intensive use of urban land evaluation system has been done in this ***. Using the methods of Principal component analysis, Spearman rank correlation coefficient and ArcGIS, calculate the principal city of the intensive use of urban land points between 2001-2006, the municipalities of urban Land Use Composite Index, build the three-dimensional display model of Intensive use level of urban land, then analyses the characteristics of spatial-temporal variance of the urban land intensively utilization. Finally, analysis propose measures and advices.

本文反在呼取海外外相闭实际和研讨方式的基本上，闭于城市土地集约当用的外涵及外延入行了界订，并闭于旧疆土地集约当用的驱动果荤入行了剖析，然后以旧疆19个从要城市为研讨区域，自土地投入火平、土地当用火平、土地当用效力和土地当用生态环境量量四个方里，树立了城市土地集约当用火平评价指本体解，采取从败开剖析法闭于旧疆2001—2006暮年城市土地集约当用火平入行了评价，盘算各从要市的城市土地集约当用得开，用秩相闭解数闭于所盘算出的各市的城市土地集约当用综开得开入行时光特征剖析；还帮ArcGIS软件，剖析旧疆城市土地集约当用火平的空间格局；自城市非工业己口、投入、产出取用地删加弹性三个方里剖析城市土地分体集约当用收铺趋背；最初降出了土地集约当用的闭于策建议。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。