一种雷达回波数据的实时压缩算法

本文研究了脱靶量测量中的雷达回波数据的实时压缩问题，通过对作匀速直线运动目标的多普勒信号特征的分析，提出了一种基于离散余弦变换（DCT）的多普勒信号的变换域压缩算法，并讨论了根据重构信号由高分辨率谱估计及非线性最小二乘拟合进行脱靶量测量的问题。     

Reformulating Environmentally Constrained Traffic Equilibrium via a Smooth Gap Function

Various government laws have recently been enacted to alleviate the environmental deterioration of transportation systems. Environmental constraint is a valid means to explicitly reflect various environmental protection requirements imposed by the government. In this paper, we examine the environmentally constrained traffic equilibrium problem (EC-TEP), which is a fundamental tool for modeling and evaluating environmental protection requirements. Specifically, we provide an equivalent reformulation for the EC-TEP. The proposed reformulation adapts the concept of gap function to simultaneously reformulate the nonlinear complementarity conditions associated with the generalized user equilibrium conditions, environmental constraints, and conservation constraints as an equivalent unconstrained optimization problem. This gap function reformulation has two desirable features: (1) it can handle a general environmental constraint structure (linear or nonlinear; link-based or area-based) and a general link and route cost structure, enhancing the modeling adaptability and flexibility; (2) it is smooth and unconstrained, permitting a number of existing efficient algorithms for its solution. A gradient-based solution algorithm with a self-regulated averaging stepsize scheme is customized to solve the reformulated unconstrained optimization problem. Numerical examples are also provided to demonstrate the modeling flexibility of the proposed EC-TEP reformulation.     

Together we measure: Improving public service outcomes via the co-production of performance measurement

Not-for-profit organizations (NFPs) aim to deliver public services and achieve outcomes for their beneficiaries. However, little attention has been given to how NFP professionals engage with beneficiaries to develop the performance measures that inform service improvement and accountability. Our findings illustrate how a co-production approach to performance measurement can enhance the meaningfulness of outcome measures, hence supporting service improvement and facilitating ‘collaborations for accountability’ between NFPs and their beneficiaries.     

浅析人力资源会计的计量问题

进入知识经济时代,人作为一种资源越来越受到重视。尤其在我国,作为一个人口大国,人力资源是一项非常重要的资源,而人力资源会计尚未得到广泛应用的原因主要在于"人力资源会计计量"的困难。就人力资源会计计量方面的问题作了一些比较探讨。     

室内装修影响空气质量实测分析及对策

甲醛、TVOC是新建建筑及装修室内空气主要污染物。通过对新装修住宅室内进行实测分析研究,记录实验数据,分析实验结果,将其浓度与国家标准进行对比,并分析探讨其影响因素,提出减少其含量的方法,对人们减少环境污染提供一些简单易行的方法。     

高压输电线路故障测距算法综述

高压输电线路故障定位的准确性对电网的稳定运行有着非常重要的意义。文章对高压输电线路现有的各种测距方法进行了归纳总结和研究分析,并评述了各自的优点和不足。     

高精度移相器制造工艺技术研究

移相器是某雷达高功率隔离器的重要组成部分,其结构复杂、尺寸精度高、加工难度大。文章提出通过在生产过程中运用高速切削加工技术、低温真空钎焊技术、三坐标测量技术等相关技术,有效的降低了移相器加工难度,提高了产品质量。     

从人机工效角度谈红外热像仪在500kV变电站的实际应用

文章试图从一个新的角度,以人、环境、对象之间的相互关系为分析依据,通过寻求人与红外热像仪的协调性和人性化联系,结合500 kV变电站设备测温实际,给出了在500 kV变电站应用红外热像仪进行设备测温的一种高效应用方法。     

超声测量虚拟仪器的设计与开发

文章基于超声测距的原理,利用4轴数控基础作为运动控制平台,结合超声采集卡设计并开发了超声测量系统实现复杂型面构件的测厚,利用Visual C++实现了超声测量的虚拟仪器软件功能,最后对标准试块进行了测厚实验,实验结果验证本超声测量系统的有效性。     

红外热成像测温中导体材料表面的影响及测温效果改进方法

文章介绍了红外热成像测温的基本原理,通过分析电力设备导体表面的物理特性,阐述了电力设备红外热成像测温中导体材料表面特性对测温工作效果的影响,并通过实践论证的方法提出了提高电力设备红外测温工作效率的方法。