查询词典 spatial isomorphism

Composite layer topology expands the sense of space-time composition to spatial topology, and proves that the static spatial topology representation capability of composite layer topology is as strong as that of static layer topology.

复合图层拓扑扩展了时空复合对空间拓扑的意义，并证明复合图层拓扑的静态空间拓扑表达能力和静态图层拓扑一样强。

Modern approach methods of geography, ecology, quantitative analysis, expert integration, remote sensing image analysis and geographical information system were combined to reveal the matters in this paper. The eco-geographical background of the research area and the research work studied by other scholars were comprehensively expatiated. The temporal and spatial variation of precipitation and soil moisture, vegetation and soil distribution, and land use/land cover were compared as well. On the basis of foregoing analysis, the eco-geographical differentiation was discussed. According to principles and indicators, with extension engineering method and integrated analysis, the physical geography boundary between subhumid and semiarid areas were demarcated. By using remote sensing image analysis, wavelet analysis of the perennial precipitation and temperature, and the comparison of temporal and spatial variation of the desertification, this paper accounted for the regional response to global environmental change and suggested the dominant environmental problems.

本文采用了地理学与生态学相结合、定量分析与专家集成相结合、遥感图像解译和地理信息系统相结合的方法，对研究区的生态地理背景和已有研究工作进展情况给予了全面的分析和阐述；通过对区域水分条件（大气降水、土壤水分条件）、植被、土壤、土地利用／土地覆被状况等环境要素的时间与空间特征的对比分析，探讨了研究区内部生态地理特征的差异；在一定的原则指导下，通过建立指标体系，以可拓工程方法和模型为支撑，经过综合分析确定了研究区内半湿润、半干旱区界线划分方案；通过遥感图像解译、典型站点多年降水与温度的小波分析、土地沙漠化时空变化的对比分析等，说明了研究区域对全球变化的响应；表明了该区域所面临的主要环境问题。

The fractal theory is discussed used in urban spatial morphology. From the psychologic cognition mechanism aspect, according to cognitive superincumbent process, the indexes system and research frame for quantitatively descriptive urban spatial morphology are constructed.

基于以上研究，笔者探讨了网络分析和特征值分析中的主要指标，即对线状要素描述的主要指标有：方向均值、关联矩阵、邻接矩阵、回路数H、β指数、α指数、γ指数等，对面状要素描述的指标有：圆形率、紧凑度、形状系数、标准面积指数、放射状指数等；并探讨了分形理论在城市空间形态研究中的应用，在此基础上，从心理学的认知机理出发，按照自上而下的认知过程构建了定量描述城市空间形态的指标体系和研究框架。

It very important to syncretize the community ecology and landscape ecology by the spatial distribution and comparisons in scale. The result show bird habitat selection is affected by the temporal and spatial scale and heterogeneity.

生物分布的空间异质性和尺度的比较研究是群落生态学和景观生态学交叉研究的重要切入点，本研究认为，鸟类的生境选择研究应该是时间、空间尺度以及异质性研究的综合。

Regional spatial layout is a dynamic process of regional spatial structure, i.e. economic and non-economic factors are territorially collocated with the guide of strategic plans.

区域空间布局是区域空间结构的动态调整过程，即在战略性规划的指导下，对各类经济要素和非经济要素的地域配置过程。

Spatial query language ; topological relationship ; complex spatial feature ; completeness ; exclusiveness

空间查询语言；拓扑关系；复杂空间对象；完备性；互斥性

Based on the description of uncertain linear and area objects, intersection degrees for parts of uncertain linear and area objects are represented quantitatively. By calculating correlation degrees between spatial vectors composed of these measurement units and spatial relation vectors determined by 9-intersection model, a new model is presented for topological relations between uncertain linear objects and fuzzy region, which could distinguish the type of topological relations through quantitative analysis method.

在时不确定线状目标和面状目标进行描述的基础上，对不确定线状目标与面状目标各组成部分之间的相交程度进行了定量表达，通过计算这些度量组成的空间向量与9-交集模型确定的空间关系向量之间的相关度，提出了一种不确定线状目标和面状目标之间拓扑关系的描述模型，通过定量的方法来对其空间拓扑关系进行判别。

Based on Needs analysis and according to the characteristics of the data for rubber tree precise fertilization decision-making, this paper detailed to analysis and design the spatial data and attribute data of rubber tree precise fertilization of state farm, analysised the spatial data and attribute data of rubber tree precise fertilization decision-making and the database structure, then constrcted the corresponding database.

通过需求分析，根据橡胶树精准施肥决策所需数据的特点，对国营农场橡胶树精准施肥空间数据和属性数据进行详细的分析与设计，对橡胶树精准施肥决策需要的空间数据和属性数据进行分析和数据库结构进行设计，并构建了相应数据库。

Multiple antenna arrays are often used to overcome the effect of channel fading which is caused by multipath interference. In chapters 4 and 5 ,we derive spatial correlation equations of ULA ,UCA and CRA for two types of angular spread distributions (uniform distribution and truncated Gaussian distribution).We also compare the difference between these antenna arrays by showing the bit error rate simulation results and discuss the relationship between BER and spatial correlation. In a multi-user mobile radio environment , we present simulation results to show that adaptive MBER algorithms have better performance than the traditional MMSE algorithm.

多天线阵列常被用来克服多重路径干扰导致通道衰减的影响，我们对各种天线阵列架构进行比较，在第四、五章中推导出ULA、UCA与CRA个别对两种角度扩散机率密度分布的空间相关性函数，由实际实验模拟的位元错误率图形比较天线阵列间的差异，并讨论位元错误率与空间相关性之关连，在多用户端行动通讯环境下，我们也由模拟验证可适性MBER演算法，会比传统MMSE准则有更好的效果。

Based on the convergence theory in the documents about economic growth, the thesis makes the matrix, one kind of the methods about Spatial Econometrics, according to the spatial geographical ubiety between provinces in order to analyses empirically the difference about the economic growth between areas in the mainland since the open-door policy, especially the year 1990 from which the economy of China grows rapidly.

本文以经济增长文献中有关收敛性理论为基础，运用根据省际间的空间地理位置关系建立空间关系矩阵的空间计量经济学方法，对中国改革开发以来，特别是经济高速发展的1990年以来中国大陆地区的地区经济增长差异进行实证分析。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。