开阔思维抓住本质——计算机控制技术课程教学探讨

计算机控制技术是以控制原理和计算机技术为基础的综合专业课。为了建立与前续课程的区别与联系,文章从积分变换、部分分式法求Z反变换、连续域离散化设计和计算机控制系统直接设计方法等方面探讨了计算机控制技术知识点的本质,以便学生能够理清概念,掌握本课程的知识。     

Increasing Choice and Control for Older and Disabled People: A Critical Review of New Developments in England

This paper critically examines new policies currently being implemented in England aimed at increasing the choice and control that disabled and older people can exercise over the social care support and services they receive. The development of these policies, and their elaboration in three policy documents published during 2005, are summarized. The paper then discusses two issues underpinning these proposals: the role of quasi‐markets within publicly funded social care services; and the political and policy discourses of consumerism and choice within the welfare state. Despite powerful critiques of welfare consumerism, the paper argues that there are nevertheless very important reasons for taking choice seriously when considering how best to organize and deliver support and other services for disabled and older people. A policy discourse on consumerism, however, combined with the use of market mechanisms for implementing this, may be highly problematic as the means of creating opportunities for increased choice and, on its own, risks introducing new forms of disadvantage and social exclusion.     

The Intervening Role of Relational Aggression between Psychological Control and Friendship Quality

This study investigated the associations among psychologically controlling parenting, relational aggression, friendship quality, and loneliness during adolescence. A model was proposed in which relational aggression plays an intervening role in the relations between both parental psychological control and friendship outcomes. In a sample comprised of middle adolescents and their parents, process analyses revealed that psychological control (indexed by parent and adolescent reports) positively predicted adolescents' self-reported relational aggression that, in turn, negatively predicted friendship quality and positively predicted loneliness. The model held for both mothers and fathers and was not moderated by adolescent gender. The discussion focuses on possible mechanisms explaining the relations among psychological control, relational aggression, and friendship outcomes.     

关于人民银行内部审计质量控制的思考

本文对人民银行内部审计质量控制作深入探讨,并根据实践经验提出相关见解和建议。     

新闻媒体必须坚持正确舆论导向

本文阐述新闻媒体必须坚持正确舆论导向。     

一种实用自适应PID控制器

本文介绍了一种实用自适应PID控制器,它是以MCS-51系列单片微机为核心,采用PID控制规律结合参数辨识的控制算法,实现了PID参数完全在线自动整定。该控制器适用于被控制对象未知或慢时变的场合,既可替代常规PID控制器,也可作为分布式系统的低级智能控制器。     

回收物流库存控制研究

本文探讨了包含回收品的库存系统。回收物流库存中既有一般生产过程的新产品,也有经再制造的回收品,使其最优库存策略非常复杂,论文推导出不同控制方式下的EOQ模型,以确定最优生产和再制造批量。此外,还对求得的最优批量进行适当的调整,以确保在循环周期中的定货次数为整数。该模型形式、结构简单易于在实践中应用。     

关于外汇期货套期保值比率的实证研究

最佳套期保值比率(OHR)的估计方法一直是金融工程理论研究的核心问题,从最开始的幼稚法到JSE法 以及随后的很多其他改进方法,保值效率都有不同程度的提高。使用包含误差修正结构的GARCH模型估计外汇 (澳大利亚元)期货的套期保值比率。通过效率比较,证实该模型所得到的套期保值比率比起传统方法都具有更好 的降低风险能力。     

桌面式电火花加工机床数控系统硬件设计

针对桌面式电火花加工机床数控系统的兼容性和加工放电要求,课题组设计了一款基于ARM和现场可编辑门阵列（field programmable gate array,FPGA）的电火花加工机床数控系统硬件平台。该平台任务分配均匀合理,以ARM处理器为核心搭建上位机,移植Linux系统进行多任务处理、人机界面、插补运算等任务;以FPGA为核心搭建的下位机系统负责运动控制、放电脉冲控制、辅助模块控制等任务;硬件平台的搭建采用了核心板+基板的方式并采用以太网口进行通信。试验结果表明该硬件平台搭建的数控系统可以较好地完成电火花小孔加工。该研究提供了一种移植性好、迭代升级成本低、适配多种脉冲电源的电火花加工机床数控系统硬件平台设计方案。     

传染病防治义务的公众认知现况及改进策略研究

为探索公众传染病防治相关义务认知水平的改进路径,促进公众参与传染病防治素养提升,文章基于《中华人民共和国传染病防治法》编写问卷,对江苏省南京市居民开展随机抽样调查。结果发现,受访者总体认知情况良好,年龄、文化程度、收入水平和职业都是影响认知水平的主要因素;现代媒体是传染病防治法治宣传的重要平台,但宣传效果有待改进。应加强公共健康观念宣传,促进“为人民健康尽责”的公民意识形成;激发主动学习意识,调动公众参与传染病防治法治教育积极性;关注弱势群体,强化社区传染病防治宣传工作。