先验知识下的不确定作战行动过程设计

作战行动过程设计是网络化条件下建立高效指控组织体系中的重要环节, 对组织的高效运行具有重要意义。针对已知先验信息条件下, 如何在动态战场环境下快速寻找最优行动过程问题, 结合动态贝叶斯网和学习型遗传算法(LGA), 构建了基于DBNs的C2组织行动过程问题的数学模型。将先验信息与条件概率表(CPT)相结合, 运用LGA算法寻找最优行动过程。通过仿真实验验证了具有先验知识条件下基于DBNs的行动过程模型以及模型求解方法的可行性和有效性。     

Subitising activity relative to units construction: a case study

Subitising, a quick apprehension of the numerosity of a small set of items, has been found to change from an individual's reliance on perceptual to conceptual processes. In this study, we utilised a constructivist teaching experiment methodology to investigate how the subitising activity of one preschool student, Amy, related to her construction of prenumerical units. Subitising and counting tasks were designed to assess and perturb Amy's thinking relative to her construction of units, and to observe changes in Amy's activity associated with the different tasks. Findings indicate that as Amy's subitising activity changed from perceptual to conceptual, she constructed subitised motor units and subitised figurative units. Implications of this study suggest that the construction of subitised units may support young children's later development of arithmetic units.     

A class of highly symmetric graphs,symmetric cylindrical constructions and their spectra

In this article, we introduce the algebra of block-symmetric cylinders and we show that symmetric cylindrical constructions on base-graphs admitting commutative decompositions behave as generalized tensor products. We compute the characteristic polynomial of such symmetric cylindrical constructions in terms of the spectra of the base-graph and the cylinders in a general setting. This gives rise to a simultaneous generalization of some well-known results on the spectra of a variety of graph amalgams, as various graph products, graph subdivisions and generalized Petersen graph constructions. While our main result introduces a connection between spectral graph theory and commutative decompositions of graphs, we focus on commutative cyclic decompositions of complete graphs and tree-cylinders along with a subtle group labeling of trees to introduce a class of highly symmetric graphs containing the Petersen and the Coxeter graphs. Also, using techniques based on recursive polynomials we compute the characteristic polynomials of these highly symmetric graphs as an application of our main result.     

基于以太无源光网络（EPON）的信息网络传输架构分析

EPON是一种在信息网络传输中广泛应用的光纤接入网技术,由于该技术本身具有强大的功能和良好的经济性,被誉为是＂实现信息网络传输的最佳媒介＂,具有广阔的发展空间。文中介绍了基于以太无源光网络的网络结构层次模型,并对EPON系统的关键技术进行分析。     

论电网工程造价控制的问题与对策

我国的电网工程造价控制经过多年的发展,已经取得了长足的进步,然而还存在一些问题,致使电网工程造价控制水平受到了一定的制约。文中探讨了电网工程造价控制中存在的问题,并提出了一些意见和对策。     

基于Raspberry PI为结点的天气云测量网络实现

本论文提出了一种天气信息云测量网络设想,基于此设想设计并实现了一种典型的天气云测量结点。根据网络中测量结点需要具有对多种数据综合采集、数据传输和远程控制能力的要求,提出了云端天气测量平台的总体方案,构建了基于3G网络的通信协议,完成了包含有多种天气测量传感器的结点硬件和软件设计并进行了测试试验。试验表明所设计系统满足云端天气测量平台的要求,具有集成便携、鲁棒性强、实时性好、传输能力好的特点。     

触点式光纤液位传感器传感头的制作及其应用

具体描述了触点式光纤传感头的制作过程和工作原理。对传感头的微观形状与反射率的关系进行了实验研究。应用这种传感头设计了一种光纤闭环液位控制系统。应用该传感头设计的光纤液位闭环控制系统已经在实验室运行近一年 ,取得了良好的效果。由于该控制系统是本征安全型的 ,因此适用于一切易燃、易爆的恶劣环境 ,如石油、化工等领域。     

传感器技术的发展和趋势综述

介绍了传感器技术的发展过程及常用的分类方法，分析了传感器技术的发展趋势，阐述了传感器在现代科学技术中的应用。     

建筑施工引起的几个结构设计问题的讨论

介绍了土建施工引起的几个质量问题和应采取的防止措施，对目前出现的一些新的施工方法进行讨论，并对结构设计中存在的个别问题提出了修改意见。