MCS—96系列单片机HSO口在交直流调速系统中的应用

本文介绍了一种在交直流调速系统中使用MCS—96系列单片机的HSO以60°分段的方式发触发脉冲的方法,详细分析了具体的实施过程以及由此带来的宽脉冲及漏触发的问题和解决办法。     

联合公式判定非循环执行路径

针对触发图中有环时,在实际运行中仅执行有限次,该规则集可能是可终止的,通过对规则集的静态分析,提出了联合公式的概念,给出了判定联合公式是否满足条件的算法和时间复杂度分析,联合公式的提出,简化了非循环路径的判定工作,为判定主动规则触发图为有环时的可终止性奠定了基础。     

强激光引导和诱发大气高压放电研究

报道利用钕玻璃激光器的1.06μm强激光产生大气等离子体通道,从实验上研究了其在加载直流高压的棒状电极电场内对放电情况的影响,通过拍摄到的典型照片,描述了等离子体通道的引导放电特性,并测量了其诱发放电能力.     

用过零周波触发方法提高变压器负载的功率因素

介绍了一种新的晶闸管（ＳＣＲ）触发方法－过零周波触发。并指出,将该法用于变压器负载的电路控制上,既可提高功率因素,又可避免变压器直流磁化问题。     

"可行的"城市设计--当代城市设计的定义、方法、作用及未来

城市设计这一概念往往很不确定.我国的城市设计大多以"指导方针"形式出现,用以控制和指导城市的形态建设,但很受规划的制约.另一种城市设计是通过大型示范性工程的建造去整合原有城市环境,并对附近地区的发展起引导作用,作者称之为"引导性"或"可行的"城市设计,国外不乏其例.作为一种动态概念,城市设计将会随着相关学科的发展而不断变化,相互融合,甚至最终消亡.     

浅析固定电话彩铃业务的实现方案

介绍了彩铃业务的功能及其业务特性,对彩铃业务做了市场需求分析,并从技术上详细分析彩铃业务的触发方式和话路桥接控制方案．阐述了开展彩铃业务的具体实现流程。     

Deregulation of Ca2+-Signaling Systems in White Adipocytes,Manifested as the Loss of Rhythmic Activity,Underlies the Development of Multiple Hormonal Resistance at Obesity and Type 2 Diabetes

Various types of cells demonstrate ubiquitous rhythmicity registered as simple and complex Ca²⁺-oscillations, spikes, waves, and triggering phenomena mediated by G-protein and tyrosine kinase coupled receptors. Phospholipase C/IP₃-receptors (PLC/IP₃R) and endothelial NO-synthase/Ryanodine receptors (NOS/RyR)–dependent Ca²⁺ signaling systems, organized as multivariate positive feedback generators (PLC-G and NOS-G), underlie this rhythmicity. Loss of rhythmicity at obesity may indicate deregulation of these signaling systems. To issue the impact of cell size, receptors’ interplay, and obesity on the regulation of PLC-G and NOS-G, we applied fluorescent microscopy, immunochemical staining, and inhibitory analysis using cultured adipocytes of epididumal white adipose tissue of mice. Acetylcholine, norepinephrine, atrial natriuretic peptide, bradykinin, cholecystokinin, angiotensin II, and insulin evoked complex [Ca²⁺]_i responses in adipocytes, implicating NOS-G or PLC-G. At low sub-threshold concentrations, acetylcholine and norepinephrine or acetylcholine and peptide hormones (in paired combinations) recruited NOS-G, based on G proteins subunits interplay and signaling amplification. Rhythmicity was cell size- dependent and disappeared in hypertrophied cells filled with lipids. Contrary to control cells, adipocytes of obese hyperglycemic and hypertensive mice, growing on glucose, did not accumulate lipids and demonstrated hormonal resistance being non responsive to any hormone applied. Preincubation of preadipocytes with palmitoyl-L-carnitine (100 nM) provided accumulation of lipids, increased expression and clustering of IP₃R and RyR proteins, and partially restored hormonal sensitivity and rhythmicity (5–15% vs. 30–80% in control cells), while adipocytes of diabetic mice were not responsive at all. Here, we presented a detailed kinetic model of NOS-G and discussed its control. Collectively, we may suggest that universal mechanisms underlie loss of rhythmicity, Ca²⁺-signaling systems deregulation, and development of general hormonal resistance to obesity.     

基于行为的移动智能终端恶意软件自动化分析与检测系统

文章介绍了一款基于行为的移动智能终端恶意软件自动化分析与检测系统,通过对大量恶意样本的研究,构建了一套敏感行为库,在不依赖恶意软件静态特征库的情况下,可有效判别已知和未知的恶意软件。该系统将静态分析技术与动态分析技术相结合,在静态分析技术中,增加了敏感API代码快速定位功能;动态分析技术的使用有效提升了可疑样本的敏感行为捕获的覆盖面和准确性。最后,基于SVM算法对样本的恶意性进行自动化判定。实验结果表明,该系统能够有效分析可疑样本行为,检出率高、误报率低,具有良好的应用前景。     

浅谈电子服务系统的应用

本文提出一种集安全防范、电器控制为一体的电子服务系统,它适合于独立的或物业管理的居民住宅。经调试证明,该系统稳定可靠,是住宅自动化管理的优选产业。     

计算机技术在大功率整流装置中的应用

对照原整流控制装置介绍了由株洲四方电力电子有限公司研制的、黑龙江齐化化工有限责任公司2001年10月新投运的RICS系列晶闸管整流装置计算机控制系统的应用。