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We generalize the concepts of two kinds of discrete distance of interval-valued fuzzy sets based on Hausdorff metric, and introduce a new distance of discrete interval-valued fuzzy sets based on Hausdorff metric and study some properties.

同时我们分别举例说明全空间IF~*(R，d~*和IF~*(R，d_p~*不是完备的，IF~*(R，d~*和IF~*(R，d_∞~*不是可分的。我们还对区间值模糊数序列在这三种距离意义下的收敛性之间的关系进行了讨论，得到一些结果。

Based on in-depth analysis of the realization of heterogeneous database based on the method of design and realization of a system.

本文在深入分析实现异构数据库的方法的基础上，设计和实现了一个系统。

It's obvious that semantic retrieval is more reasonable than retrieval based on low features. So we need to study image retrieval based on region segmentation, image hierarchical classification and image semantic label standard.

显然语义级检索是比基于低层特征检索更合理的图像检索方法，因此有必要研究基于区域分割的图像检索、基于语义级的图像分级分类和图像的语义标记标准。

The project proposed and established the strict unique mathematical model of instantaneous frequency aiming at the currently existed problems in Hilbert Huang Transform form the viewpoint of physical connotative meaning; proposed and established the strict mathematical model of general intrinsic mode signal based on the concept of general continuous intrinsic mode signal and the compositive principle of practical general intrinsic mode signal; researched and proposed the fitting method of envelope lines in HHT from the viewpoint of theory, conquered the blindness and random in quondam EMD envelope line fitting and boundary treatment; developed a virtual time-frequency analyzer based on general intrinsic mode signal decomposition to open out the local time-frequency characteristics of nonlinear and nonstationary signal more deeply and accurately.

本项目针对希尔伯特-黄变换现阶段存在问题，从物理内涵的角度提出并建立了瞬时频率严格的唯一的数学模型；基于连续性的一般固有模态信号的概念和实际信号的一般固有模态信号的组成原理，提出并建立了一般固有模态信号严格的数学模型；从理论角度研究并提出HHT中的包络线构造方法，克服了原EMD的包络线构造和边界处理的盲目性和随意性；研发一台基于一般固有模态信号分解的虚拟式时频分析仪，使之可以更深入、准确地揭示非线性非平稳信号的时频局部特征。

In this chapter, firstly, the definition of rough semigroups is given afresh. Then based on rough groups, rough subgroups, rough cosets, rough invariant subgroups, some properties of rough subgroups and rough invariant subgroups and the concept of rough quotient groups are introduced. Finally, based on some concepts of homomorphism and isomorphism of rough groups, basic homomorphism theorem and isomorphism theorem of rough groups are put forward and proved.

在这一章中，首先重新给出了粗糙半群的定义，其次在粗糙群、粗糙子群、粗糙陪集、粗糙不变子群的基础上，给出了粗糙子群的若干性质、粗糙不变子群的三个重要性质和粗糙商群的定义，最后在粗糙群同态与同构的基础上，给出了粗糙群同态基本定理与同构定理。

Then this paper makes a deep analysis on the HWMP proposed in 802.11s, points out some defects in root selection and proactive tree generation and makes improvements as follows: it proposes a distributed root selection algorithm to improve the simple direct configuration of root in the draft; it also proposes a ETX-based proactive tree generation algorithm to improve the simple minimal spanning tree based on hop count in the draft.

接着本文选取802.11s草案中提出的HWMP协议进行了深入分析，指出了该协议在根节点选取算法和预先树生成算法中的不足，分别对其做出了改进：提出的分布式根节点选取算法对草案中简单的直接指定根节点做出了改进；提出的基于ETX路由权值的预先树生成算法对草案中简单的基于最小跳数的预先树生成算法做出了改进。

Now the triangular mesh model simplification algorithm based on edge collapse is very complex.Combining Garland's quadric error metrics algorithm and Hoppe's progressive mesh algorithm,a new algorithm for triangular mesh dynamic model simplification based on cost function is proposed in this paper.

目前基于边折叠的三角网格模型简化算法边折叠计算复杂，没有有效进行动态简化，结合Garland的二次误差度量算法和Hoppe的累进网格算法，提出了基于代价函数的三角网格模型动态简化算法。

It is interesting to note that 9,3x64 7N33 sniping cartridge is actually based on 9,3x64 Brenneke hunting round, designed in early 20th century for large game hunting, and the SVDK started its life as a 9,3x64 "Tigr-9" hunting rifle, based on SVD design.

有趣的是注意到，9，3 X64的7N33狙击墨盒实际上是在9，3 X64的Brenneke狩猎轮设计，基础早在20世纪大狩猎和SVDK开始为9，3 X64的"季格尔- 9"猎枪，基于 SVD的设计，它的生命。

Analysis includes three aspects: main body of environment's right is from main body using environment discreditably to main body using environment hurtfully; Character of environment's right is from creditor's right based on social damage to property's right based on implementing environment's criterion; Form of environment's right is from static adscription to dynamic fluxion.

分析了中国环境使用权的有偿分配主体由有损害使用主体转变为有害使用主体、性质由建立在因污染引起的"社会损害"基础上的债权转化为实现环境质量标准基础上的物权、形态由不可转让的静态归属到可交易的动态流动的进化过程。

Based on the analysis of the interference mechanism of ICI, a high efficient ICI cancellation scheme based on differential coding in terms of channel estimation is introduced.

该文在分析子载波间干扰机制的基础上，从信道估计的角度提出了一种高效的ICI自消除差分编码方案。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。