滑阀副配磨参数测量的理论研究

本文对滑阀副配磨参数测量进行了理论分析,推导了滑阀副流量位移曲线的数学模型。文中分析了数据处理中的原理误差,提出了理论公式拟合的算法,消除了原理误差。其中估算的节流边圆角半径、径向间隙,对控制阀的加工质量有重要意义。     

热式流量传感器辨识与数字补偿方法

本文就改善热式流量传感器的响应特性问题进行了理论与实验研究,指出了模拟电路补偿方法所存在的不足,论述了热式流量传感器的辨识与实验方法,提出了用数字补偿提高其响应速度的方法。研究表明,这种方法是很有效的。     

微机数控定比运动速度插补的最小误差法

本文针对微机数控中检测一轴的运动、控制另一轴运动的定比运动,提出了一个控制速度插补的算法,证明了这种方法的最小误差特点,并进行了误差分析。     

神经网络的原理及应用

人工神经网络是在现代神经科学研究成果的基础上提出的,反映了人脑功能的基本特征。但它只是人脑功能的某种抽象、模拟和简化。研究这一技术的目的在于,探索人脑加工、储存和搜索信息的机制,并将其原理应用于人工智能的可能性。本文介绍了一些神经网络模型及应用。     

基于PEPA的目标选择方法

目标选择是军事作战领域的重要内容,而一体化联合作战更是要求目标选择从系统的角度出发,对指控系统进行破击目标选择。基于反映系统动态特性和消减主观因素的考虑,本文将过程代数的思想引入到指控系统破击目标选择领域中来。通过案例,对某防空指控系统进行简要分析,在硬杀伤和资源约束的条件下,进行目标方案选择的分析,过程简洁、结论客观、方案可行,证实了该方法的有效性,为指挥决策提供了借鉴和帮助。     

zn及Zn／Si02复合添加剂的摩擦学性能

实验室自制了锂基润滑脂,通过四球试验研究zn作为锂基润滑脂添加剂在不同工况条件的摩擦学性能,利用光学显微镜和EDX分析了磨斑表面形貌及元素组成,探讨了zn的润滑作用机理,并对zn与SiO2不同复配方案的摩擦学性能进行了研究。结果表明：在低载荷条件,zn能更显著地提高锂基润滑脂的抗磨性能;在中高载荷条件,zn同时具有减摩抗磨性能,但对Pn值的提高没有太大帮助。EDX能谱分析表明磨斑表面存在特征zn元素,说明zn能够在摩擦表面沉积,形成摩擦学性能显著的表面润滑层;同时,zn与硬质颗粒SiO2在适宜的复配比例时具有一定的协同效应,能提高锂基润滑脂的摩擦学性能．     

Cost allocation of capacity investment games

Consider a manufacturer serving a set of retail stores each of which faces deterministic demands in a finite planning horizon. At the beginning of the planning horizon, the production capacity of the manufacturer is built, followed by production, outsourcing to third party manufacturers if necessary and distribution to the retail stores. Because the retail stores are usually managed by different managers who act as independent profit centers, it is desirable that the total cost is divided among the retail stores so that their incentives can be appropriately captured and thus efficient operations can be achieved. Under various conditions, we prove that there is a fair allocation of costs among the retail stores in the sense that no subset of retail stores subsidizes others, or equivalently, the resulting capacity investment game has a nonempty core, that is, the capacity investment game is a balanced game. In addition, our proof provides a mechanism to compute a fair cost allocation. © 2013 Wiley Periodicals, Inc. Naval Research Logistics 60: 512–523, 2013     

Does Health Spending Crowd out Defense in the United States? Evidence from Wavelet Multiresolution Analysis

Abstract

This study investigates the association between defense and health spending using multi-resolution analysis incorporating the structural change model. Our empirical results suggested that a negative correlation between defense and health spending persists over the entire period of 1941–2013 in the very long-run (over 16 years cycle), but there is a change in correlation between defense and health spending in the short-run (2–4 years cycle), medium-run (4–8 years cycle), and long-run (8–16 years cycle) during the same period. In particular, there appears to have been a trade-off relationship between defense and health spending during the ex-Korean War period, but there was a complementary relationship between defense and health spending during the post-Korean War period. The crowding-out effect of health spending on defense spending during the period when the Affordable Care Act was put into effect relies on the strength of the positive correlation in the long-run (8–16 years cycle) and negative correlation in the short-run (2–4 years cycle) and very long-run (over 16 years cycle).     

图形式火警救援C3系统

图形式火警救援C~3系统是一个先进的在国内首次实现的以微型机为主处理机,达到实用水平的火警救援C~3系统。系统设计以C~3I理论和技术为基础,以地图和图形为背景,以很低的投资获取了较高的技术性能和系统功能。本文概要地介绍了该系统的总体设计思想和若干主要技术问题。