Optimal ϵ -stealthy attack in cyber-physical systems

This paper is concerned with the optimal stealthy attack problems of cyber-physical system, which is represented as discrete-time linear systems. It is considered that a deceptive attack assumed to be able to hijack and modify the nominal control signals from the controller-actuator channel with the metric of ? -stealthiness. Different from the existing literatures, some optimal attack strategies with objectives such that maintaining a fixed level of stealthiness and achieving the maximized performance degradation are designed under some constraints. It is further derived that the results of ours are more relaxed than some methods proposed before. Finally, some numerical simulations are given to illustrate the validity of the theoretical results.     

Electrophoretic separation of neurotransmitters on a polystyrene nano-sphere∕polystyrene sulphonate coated poly(dimethylsiloxane) microchannel

In this paper, a poly(dimethylsiloxane) microchip with amperometric detector was developed for the electrophoretic separation and determination of neurotransmitters. For increasing the separation efficiency, the microchannel is modified by polystyrene sulphonate∕polystyrene nano-sphere self-assembly coating. A stable electro-osmotic flow (EOF) and higher separation efficiency are obtained in proposed modified microchannel. Under optimized conditions, dopamine, epinephrine, catechol, and serotonin are acceptably baseline separated in this 3.5 cm length separation channel with the theoretical plate number from 4.6?×?10(4) to 2.1?×?10(5) per meter and resolution from 1.29 to 12.5. The practicability of proposed microchip is validated by the recovery test with cerebrospinal fluid as real sample which resulted from 91.7% to 106.5%.     

Electrophoretic separation of neurotransmitters on a polystyrene nano-sphere�Mpolystyrene sulphonate coated poly(dimethylsiloxane) microchannel

In this paper, a poly(dimethylsiloxane) microchip with amperometric detector was developed for the electrophoretic separation and determination of neurotransmitters. For increasing the separation efficiency, the microchannel is modified by polystyrene sulphonate∕polystyrene nano-sphere self-assembly coating. A stable electro-osmotic flow (EOF) and higher separation efficiency are obtained in proposed modified microchannel. Under optimized conditions, dopamine, epinephrine, catechol, and serotonin are acceptably baseline separated in this 3.5 cm length separation channel with the theoretical plate number from 4.6 × 10⁴ to 2.1 × 10⁵ per meter and resolution from 1.29 to 12.5. The practicability of proposed microchip is validated by the recovery test with cerebrospinal fluid as real sample which resulted from 91.7% to 106.5%.     

Beijing's West District Library Enhances International Cooperation

<正>The West District Library of Beijing is China’s first county/district-level public library granted with the member status of the International Federation of ...     

中国特色社会主义和平发展理论的基本框架

中国特色社会主义和平发展理论是中国的独创,它始于邓小平同志的论述,经江泽民和胡锦涛同志为核心的党中央进一步完善。它是在和平与发展成为时代主题的条件下,中国人民在建设中国特色社会主义的过程中形成的有关国内发展、世界和平及其相互关系的科学理论。其内涵涉及和平与发展关系、和平发展的动力与领导、和平发展的指导思想目标与底线、和平发展的道路与方式、中国和平发展的战略、中国与世界的关系以及中国的和平外交理论等七个方面,是中国特色社会主义理论体系的重要组成部分。     

高职制药校内外生产性实训基地功能定位探析

针对高职制药类专业生产性实训基地建设水平低的现状,分析制药校内外生产性实训基地发展缓慢的原因,提出制药生产性实训基地建设首先要解决功能定位问题;制药类专业生产性实训基地应以药物研发、社会服务为方向,将“药品生产”型实训基地通过深化校企合作建在校外企业。     

任务型教学法在高级英语教学中的应用

以学生为中心的任务型教学法在独立学院高校英语专业教学中的应用日渐普遍。文章以高级英语教学实践为例,重点分析根据任务型教学法的原则和结构模式,合理设计独立学院高级英语课堂教学任务。     

后控规范的计算机处理

分析了建立情报检索系统时受控主题标引的不足之处：标引效率低、语义网得不到扩充、不一致的组配标引。提出了以后控规范为基础的标引体系。为使后控规范能方便地由计算机实现，研究了利用相似性匹配技术找出语义上有一定联系的术语，并由计算机半自动地建立用、代、属、分、参等语义关系的方法。     

Web环境下企业竞争对手情报收集方法分析

随着互联网的发展,基于网络环境下的竞争对手情报的收集显得尤为重要。本文主要介绍了目前比较常用的基于网络环境下的竞争对手情报收集的方法以及强调网络环境下对竞争对手情报的收集的重要性。     

基于MVC的大学英语自主测试系统设计与实现

随着信息技术的不断发展,利用信息技术来辅助传统形式的教学显得越加重要。怎样用现代信息技术来提高教育水平,已是现代教育研究的重要课题。如今自主测试已经成为大学自主学习中一个重要的环节,本文主要叙述了基于MVC框架的大学英语自主测试系统的技术原理和功能模块,为实现自主测试系统提供了一个解决方案,给自主学习者带来了方便。