查询词典 distributed data base

This paper aims to study some important problems of clutter modeling and simulation, which include as follow:According to the principle that each quadrature component of K-distributed clutter can be modeled, exactly or approximately, by a weighted sum of products of two independent Gaussian variables, a new method for modeling and simulation of correlated coherent K-distributed clutter is presented.

本文对海杂波的分析与建模中的几个关键问题进行了研究，主要包括以下内容：根据K分布杂波的两个正交分量可由两列相互独立的高斯矢量的加权乘积和精确或近似构成的原理，本文提出了一种新的相关相干K分布杂波建模与仿真方法。

Focusing on the unique characteristics, multi-driven and structure-alterable two-vehicle, of the dexterous window-cleaning robot, this paper puts forward a completely distributed robot system with cell structure and distributed intelligence.

本文针对灵巧擦窗机器人的多驱动、可构形双车体的特点，提出了一种&单元结构、分布智能&概念的完全分布智能式机器人体系结构，并且，在此基础上对灵巧擦窗机器人控制系统的实现结构、全局规划、运动学模型、镇定和跟踪、分布式软件结构和实现、硬件系统的研制等方面的问题进行了深入的研究。

The system discussed before is analysed and modeled by means of using Unified Modeling Language. On the basis, the distributed Web Service frame of the system and distributed database structure is studied in detail. Meanwhile, the function of system, such as user management and human basic information management and so on, is implemented in detail.

在运用统一建模语言对系统进行分析和建模的基础上，对系统的分布式Web Service架构和分布式数据库结构作了详细研究和设计，并具体实现了用户管理和基本信息管理等系统功能。

Stress distribution at cross section of transverse uniformly distributed load and non-uniformly distributed load applied to concrete cylinder by finite element method is analyzed.

采用有限元的方法计算分析了混凝土圆柱体在受横向均匀线荷载和非均匀线荷载时其横截面上的应力状况。

Hierarchical Clustering of 6 sheep populations based on 17 quantity indexes including body measurements, ecological and morphological characters indicates that 6 sheep populations can be classified in two types: the first includes Mongolia sheep and Tan sheep distributed in husbandry area and the juncture of agriculture and husbandry area, the second includes Daweihan sheep , Xiaoweihan sheep , Tong sheep , Hu sheep distributed in agriculture area.

以概括体尺、形态、生态特征的17项数量指标为基础的6个群体的系统聚类表明：6个绵羊群体被划分为二大类，一类为牧区及农牧交错区的蒙古羊、滩羊，另一类为农区的大尾寒羊、小尾寒羊、同羊、湖羊。17项数量指标的主成分分析，用已构造的各群体的主成份值进行R型系统聚类，获得与前者类似结果。

Then, we take forward to the Distributed Merging Algorithm, a hierarchical structure to discover the stream synopsies from all leaves to root node, through setting the precision gradient to optimize the communication load and overhead of distributed system.

并提出了基于Lossy Counting算法的、分布式的合并算法DMA的一种分层结构来发现从叶子结点直至根结点的概要结构，并通过设置精确梯度使网络数量最小及数据中心和网络链接所消耗的计算资源最小来优化分布式系统的通信负载。

According to present achievement, when subsidiary stress caused by distributed load is less than 20 percent of static lateral pressure induced by gravitation, distributed load's effect may be ignored. Therefore, the expression of topograpthy influence depth on self-weight stress field is obtained.

已有研究成果表明，当由外载引起的附加应力小于由重力引起的静止侧压力的20%时，则可以不考虑外载的影响，这样便导出了地形对自重应力影响深度所满足的函数关系式。

The thrust coefficients and propulsive efficiency of a two-dimensional flexible fin with heaving and pitching motion were computed using FLUENT. The effect of different locations of the pitching axis on propulsive performance was examined using three deflexion modes which are respectively, modified Bose mode, cantilever beam with uniformly distributed load and cantilever beam with non-uniformly distributed load.

利用FLUENT软件数值计算了二维柔性鳍作升沉纵摇运动时的推力系数及推进效率，探讨了修正Bose变形方程、均匀载荷和非均匀载荷悬臂梁变形方程等三种柔性模式下纵摇轴位置对摆动鳍推进性能的影响，其中纵摇轴在尾缘处能够获得更大的推力，而最高的推进效率分别对应修正Bose模式下纵摇轴距首缘1/3弦长处和悬臂梁柔性变形模型下纵摇轴距首缘2/3弦长处。

Distributed energy system is one distributed in user terminal for multi-purpose use of energy.

分布式能源系统是一种分布于用户端的能源综合利用系统。

Firstly, the related parameters are distributed periodically in the falling film and their periods all equal to that of vacillation of fishing vessel. Secondly, the film tangent and radial velocity components are not zero because of vacillating additional inertia forces and furthermore, in one vacillation period, most parameters are distributed quite regularly in the tangent and radial directions. Thirdly, when other parameters are kept constant, the falling film absorption is enhanced if the amplitude or the period of vacillation is moderately decreased and this result conforms to the theoretical qualitative analysis. Finally, falling film absorption changes with the solution parameters at inlet and system pressure and the change trend is very similar to what happened in the static tube.

首先，降膜内相关参数分布具有周期性且周期等于摇摆振动周期；其次，摇摆附加惯性力使液膜沿吸收管周向和径向流速不为零，而且单位摇摆周期内各参数沿周向和管长方向分布比较规律；再次，当其他参数一定时，适当减小摇摆幅度和摇摆周期，液膜吸收能力将增强，这与理论定性分析相当吻合；最后，改变溶液入口参数及吸收压力，相应的吸收情况有所改变，其趋势与静止状态下的降膜吸收非常一致。

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。