查询词典 based

An efficient identity-based threshold signature scheme is proposed in this paper based on a variant of Hess's signature.

基于Hess签名的一个变体签名方案，提出了一个有效的基于身份的门限数字签名方案。

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。

We begin with an introduction of the research background, the difference between traditional network management and security-oriented network management, and the contributions of this paper. Then we present the structure and the principles of the SIMP: we put forward to a functional and hierarch model based on JMX specification and Struts technology And a JMX-based network management model.

本文首先介绍了课题的背景、网络安全管理相对于网络管理的特点和本文的研究内容，针对传统网络管理的不足，提出了安全集中管理系统的总体结构、组成及工作原理：安全集中管理平台的体系结构采用JMX技术作为系统的集成总线，将各管理功能模块作为JMX管理构件，实现了系统的组件化、模块化的开发；层次结构采用了基于Struts的MVC架构模式，底层数据库采用了对象关系映射技术，提高了系统的可维护性和可扩展性。

PhpTree - phpTree is a very simple, embeddable, web-based, php and mysql file and/or content management and administration system. phpTree is designed to be embedded wherever hierarchal based content and/or files are needed.

phpTree是一个非常简单的、嵌入式的、基于Web的php 和mysql文件内容管理系统。phpTree 设计为可以嵌入在任意的基于层次的内容或文件系统中。

To improve the classification precision,the paper proposes to use rule-based classification methods on top of statistics-based methods in hierarchical Web classification.

针对这一局限性，结合基于规则的自动分类技术的优点，提出一种基于统计-规则方法的网页层次分类技术。

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。

The car replaces many older cars in production, including the Romanian Dacia 1300 series of Renault 12-based cars and Iran's Hillman Hunter-based Paykan.

这款车取代老式汽车生产很多，其中包括罗马尼亚达契亚1300系列雷诺12型汽车和伊朗的希尔曼亨特的俱乐部被。

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。

In IBR (image-based rendering) application, we introduce homotopy mapping into view interpolation based on uncalibrated images, and present three forms of perspective homotopic transform according to different conditions.①The linear interpolation technique presented only preserves perspective geometry, but the intrinsic and extrinsic parameters of camera are changed. For the uncalibrated images, its application is restricted.②The view interpolation presented for rotational uncalibrated images can preserve both perspective geometry and the intrinsic parameters of camera, and the view position can be controlled. At meanwhile, the image registration method and panoramic images synthetic method is presented.

3在基于图象的绘制技术方面，将同伦变换引入视图插补中，针对未标定图象序列，并根据以下三种情况给出相应的透视同伦变换，①只保证符合透视关系，而摄象机内外参数均已改变的线性插补技术，对于标定图象序列，这种插补技术是非约束的，而对于未标定图象序列则只适合于某些特殊场景；②旋转图象序列的视图插补技术，同时给出了旋转图象序列的整合及全景图生成方法；③通过对非约束图象的预校正，完成平移情况下的视点插补。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。