小户型公寓设计与分析

公寓房是我军住房保障体系的重要组成部分,其中又以小户型公寓房为主体,加强小户型公寓的设计研究对提高其保障效能具有现实意义。解读军队公寓住房建筑设计方案竞赛一等奖作品,指出小户型公寓采用一梯两户多层的形式在营造营区环境、降低建筑全寿命费用、改善室内舒适度等方面具有比较优势;应合理分配小户型公寓房面积,适当提高卫浴和厨房所占面积比例,控制客厅和卧室规模;应在门厅空间布局与卫浴空间分室设置、储藏空间多样化、布置多用途小空间、管井集中出户等方面提高设计的精细化程度。     

基于贝叶斯混合博弈的空袭火力资源分配决策模型

从博弈论的角度出发研究空袭火力资源的分配问题,针对空袭编队和防空火力单元攻防对抗过程中存在的不确定性、静态性以及动态性,建立基于贝叶斯混合博弈的空袭对抗火力分配模型。通过构造贝叶斯混合博弈树,采用逆向回溯法分别建立不同的博弈分析模型,利用混合粒子群算法求解那什均衡。仿真结果表明:以博弈论为背景研究空袭作战火力分配问题,符合真实的作战坏境,有效性好,有较高的理论应用价值。     

论综合大学中教师教育的师范特色

综合大学举办教师教育具有师范类高校无法比拟的诸多优势，但也有它自身的一些弱势。只有结合实际，坚持师范性，强调师范特色，才能发挥综合大学办教师教育的优势，培养出高质量的师范毕业生。     

综合性大学师范类学生学习倦怠现状研究

本文用连榕等参照Maslach编制的《大学生学习倦怠调查量表》对师范类专业大学生进行问卷调查，旨在探讨综合性大学中师范类学生学习倦怠状况。结果表明：学生的学习倦怠处于中等程度。男生的学习倦怠程度显著高于女生；不同年级的学生在学习倦怠的各个维度上差异显著；不同专业学生学习倦怠状况差异显著，理科最为严重；城镇学生的学习倦怠程度和农村学生差异不显著。     

雷达干扰资源一对多分配方法

在对雷达干扰资源分配的一般优化模型和求解算法进行分析的基础上,从提高资源利用效率的角度出发,提出了目标雷达分群思想,并建立了一种新的基于一对多策略的雷达干扰资源分配模型,通过对目标雷达群的一对一分配实现对单部雷达的一对多分配.最后,对该模型中一些关键性问题进行了探讨,如任务整合、新任务参数确定、任务优先级排序、干扰机位置部署以及单目标雷达群干扰效益评估等.     

一种基于多层次网格的高效相关过滤方法

在分布式仿真系统中 ,网上流动的大量冗余数据严重影响了系统的可伸缩性。基于均匀网格的相关过滤法减少了冗余数据 ,但具有匹配不精确 ,格子尺寸单一 ,难以适应所有实体的缺点。提出了一种基于多层次网格的相关过滤方法 ,克服了均匀网格法的上述缺点 ,并继承了均匀网格法处理速度快的特点 ,具有快速灵活的特点     

基于改进空战威胁评估模型的权重计算方法比较

针对多无人机(UAV)任务网协同空战态势威胁评估问题,在现有基本模型基础上增加考虑气象环境对威胁评估要素的影响和无人机的自主可靠性系数两个实际因素,提出一种改进的超视距空战威胁评估模型;同时,应用串联电阻分压法、改进AHP法和熵权法分别计算融合模型中各威胁指标的权重系数;进而,在考虑己方战机对敌方战机综合威胁与优势的基础上,介绍了战机协同空战目标分配的基本方案。最后,应用上述3种权重计算方法进行空战威胁仿真计算,计算结果表明改进空战威胁评估模型可有效改善空战决策性能。     

基于Fiducial推断的Bayes验前分布的表示

先验分布的确定与表示是Bayes统计推断的出发点和关键点。提出了一种基于信仰推断 (FiducialInfer ence)观点确定Bayes先验分布的设想 ,有助于解决无验前信息或验前历史信息较少时先验分布的确定问题 ,文中给出了一个实例说明了该方法的应用     

Estimating failure time distribution and its parameters based on intermediate data from a Wiener degradation model

Instead of measuring a Wiener degradation or performance process at predetermined time points to track degradation or performance of a product for estimating its lifetime, we propose to obtain the first‐passage times of the process over certain nonfailure thresholds. Based on only these intermediate data, we obtain the uniformly minimum variance unbiased estimator and uniformly most accurate confidence interval for the mean lifetime. For estimating the lifetime distribution function, we propose a modified maximum likelihood estimator and a new estimator and prove that, by increasing the sample size of the intermediate data, these estimators and the above‐mentioned estimator of the mean lifetime can achieve the same levels of accuracy as the estimators assuming one has failure times. Thus, our method of using only intermediate data is useful for highly reliable products when their failure times are difficult to obtain. Furthermore, we show that the proposed new estimator of the lifetime distribution function is more accurate than the standard and modified maximum likelihood estimators. We also obtain approximate confidence intervals for the lifetime distribution function and its percentiles. Finally, we use light‐emitting diodes as an example to illustrate our method and demonstrate how to validate the Wiener assumption during the testing. © 2008 Wiley Periodicals, Inc. Naval Research Logistics, 2008     

A general model of heterogeneous system lifetimes and conditions for system burn‐in

Burn‐in is a technique to enhance reliability by eliminating weak items from a population of items having heterogeneous lifetimes. System burn‐in can improve system reliability, but the conditions for system burn‐in to be performed after component burn‐in remain a little understood mathematical challenge. To derive such conditions, we first introduce a general model of heterogeneous system lifetimes, in which the component burn‐in information and assembly problems are related to the prediction of system burn‐in. Many existing system burn‐in models become special cases and two important results are identified. First, heterogeneous system lifetimes can be understood naturally as a consequence of heterogeneous component lifetimes and heterogeneous assembly quality. Second, system burn‐in is effective if assembly quality variation in the components and connections which are arranged in series is greater than a threshold, where the threshold depends on the system structure and component failure rates. © 2003 Wiley Periodicals, Inc. Naval Research Logistics 50: 364–380, 2003.