Finite‐time synchronization of a class of N‐coupled complex partial differential systems with time‐varying delay

This study examines finite‐time synchronization for a class of N‐coupled complex partial differential systems (PDSs) with time‐varying delay. The problem of finite‐time synchronization for coupled drive‐response PDSs with time‐varying delay is similarly considered. The synchronization error dynamic of the PDSs is defined in the q‐dimensional spatial domain. We construct a feedback controller to achieve finite‐time synchronization. Sufficient conditions are derived by using the Lyapunov‐Krasoviskii stability approach and inequalities technology to ensure that the proposed networks achieve synchronization in finite time. The proposed systems demonstrate extensive application. Finally, an example is used to verify the theoretical results.     

后课改时期 PDS理念对数学教师专业发展的启示

新一轮基础教育课程改革正在实施,起主导作用的数学教师队伍是实施数学课程改革的关键环节,基础教育阶段数学教师应具备精深的专业基础知识、良好的教育教学能力、指导训练能力、教科研能力等专业素质。 PDS作为一种教师培养的形式,构建了更加完善的教育体系,促进了在职教师专业发展。借鉴PDS理念,在高等师范专科学校与中小学之间进行合作,建立“高校———中小学”合作共同体,快速提升在校准教师和在职教师的专业化程度。     

辣椒病毒诱导基因沉默体系的构建

采用RT-PCR方法克隆辣椒八氢番茄红素脱氢酶(PDS)基因部分序列,并构建病毒诱导基因沉默(VIGS)载体pYL156-PDS,经农杆菌介导侵染辣椒叶片,采用表型观察、半定量RT-PCR方法评价构建的VIGS体系的沉默效果.结果表明,辣椒新生叶片呈现明显的光漂白现象,且叶片内源PDS基因表达量明显低于对照.研究证明,辣椒VIGS体系已被成功构建,为规模化验证辣椒基因功能提供了技术平台.     

PDS与MMPI测试结果的相关分析

用“精神症状的自我鉴定”试题对我院１０１３名大学生进行精神健康状况的调查，并抽取其中３０３名大学生的ＰＤＳ结果用明尼苏达多相个性问卷进行对比试。结果显示ＰＤＳ精神症状指数越高，ＭＭＰＩ测试出的精神异常率越大，ＰＤＳ可作为群体及个人测试的最初工具。     

武宿机场航站楼配电系统的设计

根据太原武宿机场航站楼工程的特点、规模和发展规划,正确处理了近期和远期发展的关系,以近期为主,适当考虑发展的可能,按照负荷的性质、地区供电条件确定了设计方案.阐述了设计依据、设计内容等.     

Pulsed dipolar spectroscopy distance measurements in biomacromolecules labeled with Gd(III) markers

This work demonstrates the feasibility of using Gd(III) tags for long-range Double Electron Electron Resonance (DEER) distance measurements in biomacromolecules. Double-stranded 14- base pair Gd(III)-DNA conjugates were synthesized and investigated at K(a) band. For the longest Gd(III) tag the average distance and average deviation between Gd(III) ions determined from the DEER time domains was about 59±12?. This result demonstrates that DEER measurements with Gd(III) tags can be routinely carried out for distances of at least 60?, and analysis indicates that distance measurements up to 100? are possible. Compared with commonly used nitroxide labels, Gd(III)-based labels will be most beneficial for the detection of distance variations in large biomacromolecules, with an emphasis on large scale changes in shape or distance. Tracking the folding/unfolding and domain interactions of proteins and the conformational changes in DNA are examples of such applications.     

办公楼网络结构化布线系统

对办公楼网络结构化布线系统进行了阐述，主要包括办公楼结构化布线系统的功能，结构化布线系统的构建，结构化布线系统中局域网组建方案，结构化布线系统设计中应注意的几个问题及PDS系统的测试等内容．