Novel cued search strategy based on information gain for phased array radar

A search strategy based on the maximal information gain principle is presented for the cued search of phased array radars. First, the method for the determination of the cued search region, arrangement of beam positions, and the calculation of the prior probability distribution of each beam position is discussed. And then, two search algorithms based on information gain are proposed using Shannon entropy and Kullback-Leibler entropy, respectively. With the proposed strategy, the information gain of each beam position is predicted before the radar detection, and the observation is made in the beam position with the maximal information gain. Compared with the conventional method of sequential search and confirm search, simulation results show that the proposed search strategy can distinctly improve the search performance and save radar time resources with the same given detection probability.     

复杂网络拓扑结构对系统抗毁性影响研究

通讯网络的抗毁性、生物系统的健壮性、物理系统的稳定性都与各自系统内部网络的抗毁性息息相关。为研究复杂网络拓扑结构对复杂网络抗毁性的影响,建立了复杂系统的复杂网络抗毁性模型,以解析推导与计算机仿真相结合的方式研究了两种不同的复杂网络拓扑结构(随机网络和无标度网络)对复杂网络抗毁性的影响。并把仿真结果与解析分析的结果进行了对比分析,结果表明基于多Agent的建模仿真方法是一种研究复杂网络抗毁性的合适方法。     

武器装备体系结构描述方法研究

分析了现代战场环境下武器装备体系结构的特点,提出了一种新的武器装备体系结构描述方法.该方法从总体描述、基于定义和面向应用三个方面对武器装备体系结构进行描述,以多视图产品的形式.描述武器装备体系的应用背景、组成元素、层次结构、通信关系以及对作战能力需求的满足程度等内容.以实现海上目标远程精确打击能力的武器装备体系为例,应用该方法进行体系结构描述并给出部分描述产品示例,结果表明,用该方法对武器装备体系结构进行描述是可行的.     

Virtual reality mobility model for wireless ad hoc networks

For wireless ad hoc networks simulation, node＇s mobility pattern and traffic pattern are two key elements. A new simulation model is presented based on the virtual reality collision detection algorithm in obstacle environment, and the model uses the path planning method to avoid obstacles and to compute the node＇s moving path. Obstacles also affect node＇s signal propagation. Considering these factors, this study implements the mobility model for wireless ad hoc networks. Simulation results show that the model has a significant impact on the performance of protocols.     

客户需求可分的车辆路径问题求解

针对车辆路径问题中客户需求可分的新设想重新进行了问题描述和模型构造,根据该问题的特点,利用蚂蚁算法的基本原理,设计了相应的优化算法.虽然在客户需求不大的情况下,分割客户需求并未产生比较理想的效果,但随着客户点需求与车辆载重的比例逐渐增大.实例计算结果表明,需求可分所带来的车辆需求数量和总行驶里程的下降都比不可分情况下要好很多,从而证明了算法的有效性和分割客户需求策略的现实可行性.     

工业产品系统可靠性仿真建模方法及仿真算法

根据一般工业产品的可靠性结构特点,从系统可靠性仿真模拟的角度出发,提出了一种通用的可靠性仿真建模的方法,并给出了以该建模方法为基础的仿真算法软件编制框图,该仿真算法的特点是仿真速度快．     

专业集成电路设计中三次多项式实现的新结构

专业集成电路（ＡｐｐｌｉｃａｔｉｏｎＳｐｅｃｉｆｉｃＩｎｔｅｒｇｒａｔｅｄＣｉｒｃｕｉｔ,ＡＳＩＣ）设计中的三次多项式计算,存在着一类典型的应用问题,即自变量是累积形成的,待自变量完整形成后再行直接计算是低效的。提出一种改进的三次多项式算法,在保证和直接算法相同精度的条件下,以较少的电路元件实现计算功能。同时,本算法从自变量完整形成到给出最终结果的延迟很小。     

轨检车检测数据处理分析软件关键业务研究

从业务模型的构建和关键业务分析两个方面对检测数据里程转换和波形图对比两项关键业务进行研究,构建了检测数据里程转换模型,进行了波形图绘制和波形图联动方法的研究,并对检测数据里程转换和波形图对比这两项关键业务的业务需求及业务流程图进行了分析与绘制,最终列出了两项关键业务的功能实现情况。研究轨检车检测数据处理分析软件的关键业务,从而更高效地运用软件分析与处理轨检车数据,为保证地铁线路的安全运营奠定基础。     

一类离散广义非线性Schr(o)dinger系统周期解的存在性

把一些文献讨论的离散广义非线性Schr(o)dinger方程推广到了n维空间,应用临界点理论,得到了一类离散广义非线性Schr(o)dinger系统存在多个非零周期解的充分条件.     

Creating ‘Rhizomatic Systems’ for Understanding Complexity in Organizations

The article describes and demonstrates the use of a new research proposal for understanding the complexity in organizations in terms of a Deleuzian sense of an event. It creates the rhizome metaphor that allows the emergence of different ways of systems thinking, a legitimate challenge to the Modernist’s orthodoxy. For Deleuze and Guattari, micropolitics are the essence of what we call ‘rhizomatic systems.’ It is this concept of the organization, as a rhizome or rhizomatic systems that we want to focus from ‘problem solving’ in a real-world situation to the process of problematization, that is, the making or appreciating a series of events in the problematizing fields. The paper draws on the research experience in which participatory action research was carried out in a Korean distribution company. The participatory learning process happened to create a series of events in which ‘time-related research’ was conducted in order to facilitate the process of problematization within the organization.