Non-weighted H∞ performance for 2-D FMLSS switched system with maximum and minimum dwell time

This paper investigates the H_∞ performance of two-dimensional (2-D) switched system represented by Fornasini–Marchesini local state-space (FMLSS) model with maximum and minimum dwell time approach. By using the multiple Lyapunov function approach, and designing a set of switching signals subject to maximum and minimum dwell time characteristic, respectively, for all stable subsystems or both stable and unstable subsystems exist, we give the sufficient condition on exponential stability of the given switched system, and propose the sufficient condition which can guarantee that the given switched system is exponentially stable and has a specified H_∞ disturbance attenuation level γ. All the results obtained are on normal noise attenuation index of strictly non-weighted form, which are better than the existing results on weak one of weighted form from the physical point of view. Finally, numerical examples are presented to display the effectiveness of the proposed results.     

论基于校企合作视角的高职院校高技能人才培养模式

Chen Hui;Han Zhongpei;Chen Yao     

Observer-based decentralized control of large-scale stochastic high-order feedforward systems with multi time delays

This paper investigates the problem of observer-based decentralized control for a class of large-scale stochastic high-order feedforward systems with multi time delays. By using the homogeneous domination idea and constructing the implementable observer, the decentralized output-feedback controller design scheme is firstly proposed. Then, with the aid of stochastic time delay system stability theory, the globally asymptotically stable in probability of the closed-loop system is verified by selecting an appropriate Lyapunov–Krasoviskii functional. Finally, an example is provided to demonstrate the efficiency of the proposed design method.     

动手操作效果好

几何初级知识是中小学数学的重要组成部分.这部分单凭教师讲授或直观演示,会使学生感到枯燥无味,且不易理解和运用.如果让学生自己动手操作、动脑思考,发现并总结计算公式、性质、定理,就可以收到事半功倍的效果.     

用玩具弹球制作分子模型和晶体模型

现行的高中教材(必修·必修加选修共三册)中有家庭小实验17个,其中制作分子模型、晶体模型共3个.通过制作这些模型,对学生加深理解物质的分子结构、晶体结构,特别是对同分异构体、同素异形体的理解大有裨益.     

多元合作模式下高校高尔夫专业办学研究

我国高尔夫发展面临人才数量供需不足、人才素养参差不齐两个重要瓶颈,其核心在于传统“体教结合”、“课内外一体化”、“校企结合”办学模式固化、培养途径单一、培养目标模糊,所培养的人才无法满足社会需求。本文通过对我国高校高尔夫专业办学现状调查分析,融合多种办学思想,探究出“校-企”、“校-校”、“校-中高协-体育赛事方”多元合作模式下的办学新思路,通过多元化联合培养,针对性的塑造高尔夫需求人才,提升学校培养质量,为我国高尔夫运动的健康发展提供支持和帮助。     

我国出版宏观管理的保障机制研究

分析我国出版宏观管理手段存在的问题,提出整合行政管理、法律管理、经济调控以及行业协会管理四种出版管理手段,完善和强化出版宏观管理保障机制的思路与措施。     

高速静电照相彩色数字印刷的回顾与展望

1938年10月22日是今天正在享受激光或LED打印机、多功能一体机和静电照相数字印刷机方便性和实用性的人们值得纪念的日子。卡尔松在他位于纽约皇后区的临时实验室中成功地发明静电照相技术,完成了他著名的实验。从静电照相技术发明至今已经过了整整70个年头,数字技术的发展并未使这种技术消失或淡化,反而取得更多的进步。     

静电照相数字印刷质量的空间差异

实地填充或平网填充区域和线条复制效果是数字印刷质量评价的主要对象,本文根据这两种对象的典型质量属性测量数据讨论静电照相数字印刷质量的空间非均匀性。由于静电照相系统的空间结构特征,最终印刷品沿印张水平和垂直方向的复制质量差异很难避免。