David F. Treagust: congenial soul, science educator, and international research leader

For almost a half century David F. Treagust has been an exemplary science educator who has contributed through his dedication and commitments to students, curriculum development and collaboration with teachers, and cutting edge research in science education that has impacted the field globally, nationally and locally. A hallmark of his outstanding career is his collaborative style that inspires others to produce their best work.     

关于苍术植物的学名问题

This paper is the documentation of specimens and literature reffered to Atracty- lodes lancea (Thunb.) DC. etc. As a result, it is found that, in taxonomy of the genus Atractylodes, what represcents by four long-established names, i. e. Atractylodes lancea (Thunb.) DC., A. ovata (Thunb.) DC., A. chinensis (Bunge) Koidz. and A. lyrata Sieb. et Zucc., in fact, is the one and same species.  According to the law of priority in nomenclature, the first name should be given to Chinese drug “Cangzhu”, while theother three names have to be treated as its synonyms.     

立足学科发展着力自主创新完善学会建设促进科技进步——江西省实验动物学会工作简要回顾

江西省实验动物学会走过了光荣的二十一年历程,协助政府管理部门为推动实验动物科技工作的发展做了许多有益的工作,充分发挥了桥梁和纽带作用,取得了长足发展,迈出了新步伐,形成了许多新亮点,近七年连续评为省科协先进学会.     

Event-triggered fault estimation and sliding mode fault-tolerant control for a class of nonlinear networked control systems

This paper is concerned with integrated event-triggered fault estimation (FE) and sliding mode fault-tolerant control (FTC) for a class of discrete-time Lipschtiz nonlinear networked control systems (NCSs) subject to actuator fault and disturbance. First, an event-triggered fault/state observer is designed to estimate the system state and actuator fault simultaneously. And then, a discrete-time sliding surface is constructed in state-estimation space. By the use of a reformulated Lipschitz property and delay system analysis method, the sliding mode dynamics and state/fault error dynamics are converted into a unified linear parameter varying (LPV) networked system model by taking into account the event-triggered scheme, actuator fault, external disturbance and network-induced delay. Based on this model and with the aid of Lyapunov–Krasovskii functional method, a delay-dependent sufficient condition is derived to guarantee the stability of the resulting closed-loop system with prescribed H_∞ performance. Furthermore, an observed-based sliding mode FTC law is synthesized to make sure the reachability of the sliding surface. Finally, simulation results are conducted to verify the effectiveness of the proposed method.     

对开展社会科学成果查新研究的探讨

本文认为,国内现有的自然科学成果查新机构无法适应社会科学成果查新需要,建立全国性社科成果查新体系势在必行。为此,需要开展相关的社会科学成果查新研究。本文对开展社会科学成果查新研究的背景、意义、内容和方法进行了探讨。     

涉诉上访成因分析及制度完善

涉诉上访作为一种非诉讼纠纷解决机制在这样的背景下应运而生并有迅速发展之势,造成涉诉上访的主要因素有法律真实与客观真实的偏差、司法人员和司法制度的缺陷等。而解决涉诉上访问题的对策主要有：严格遵循民事诉讼中的程序,提高司法人员素质,加强法律宣传教育等。     

我国高校知识产权信息服务发展现状调查研究——以60家高校国家知识产权信息服务中心为例

为探究我国高校知识产权信息服务发展现状,文章通过文献调研法与网络调查法,在分析高校知识产权信息服务内容构成与流程体系的基础上,对我国60家国家知识产权信息服务中心发展现状展开调查。最后通过对调查结果的分析,总结服务中心的发展现状,并分析存在的问题,探讨针对性的发展对策。     

国内旅游专题数据库建设情况调查与分析

随着国内旅游业的快速发展,旅游专题数据库的建设日益引起业界关注,本文调查分析了国内旅游专题数据库的建设现状,并从统一规划、协调发展;联合建设,提高数据库共享度;数据库选题及框架搭建;充分发挥高校图书馆的优势四个方面阐述了应采取的措施。     

中国企业技术进步发展历史、特征分析及其本评价研究

20世纪以来，企业技术进步已经逐步成为生产力发展的重要动力，在回顾中国50年技术进步发展历史的基础上，深入分析了中国各阶段技术进步的特点，综合评价各阶段技术进步的效果，并指出中国现阶段企业技术进步中存在的问题。     

可变负载非接触电能传输系统的无功功率补偿

为解决非接触电能传输系统中负载电阻变化会导致系统传输能力变化的问题,研究非接触电能传输系统在并联—串联拓扑下负载变化时无功功率的补偿问题.通过分析理想可变初级电容的可控性,提出用积分控制器对可控电抗器进行动态调节以完成负载变化时的无功功率补偿.数值仿真表明,该控制方案是可行的.