俄罗斯及独联体各国电力电缆的生产现状和发展趋向

介绍了俄罗斯及独联体其他国家电力电缆生产现状概况，以及生产发展的主要趋势。     

抑制电力系统非全相运行过电压的电子控制器设计

电力系统非全相运行会诱发铁磁谐振过程电压，导致系统发生事故，本文论述了一种电子控制器，能迅速排除这类故障。     

新型防直击雷设施──阻抗避雷针的原理及应用

本文介绍了在接地研究中提出并研制的一种新的防直击雷设施，阐述了它的作用原理、性能及用途。计算了它用于１０ｋＶ线路防雷的效果，用击距法对这种线路的击针率进行了研究     

输电线的电晕模型及其误差

高电压网络中电磁暂态过程的流动波由于电晕作用而衰减、变形，这是电网仿真计算分析、系统过电压保护所必须计入的因素。为了在波过程的计算中考虑这一特点，本文提出一种新的等值电晕模型，并计算了它的误差。     

Ocular preparations: the formulation approach

The main aim of pharmacotherapeutics is the attainment of an effective drug concentration at the intended site of action for a sufficient period of time to elicit the response. A major problem being faced in ocular therapeutics is the attainment of an optimal concentration at the site of action. Poor bioavailability of drugs from ocular dosage forms is mainly due to the tear production, non-productive absorption, transient residence time, and impermeability of corneal epithelium. This article reviews: [1] the barriers that decrease the bioavailability of an ophthalmic drug; [2] the objectives to be considered in producing optimal formulations; and [3] the approaches being used to improve the corneal penetration of a drug molecule and delay its elimination from the eye. The focus of this review is on the recent developments in topical ocular drug delivery systems, the rationale for their use, their drug release mechanism, and the characteristic advantages and limitations of each system. In addition, the review attempts to give various analytical procedures including the animal models and other models required for bioavailability and pharmacokinetic studies. The latter can aid in the design and predictive evaluation of newer delivery systems.

The dosage forms are divided into the ones which affect the precorneal parameters, and those that provide a controlled and continuous delivery to the pre- and intraocular tissues. The systems discussed include: (a) the commonly used dosage forms such as gels, viscosity imparting agents, ointments, and aqueous suspensions; (b) the newer concept of penetration enhancers, phase transition systems, use of cyclodextrins to increase solubility of various drugs, vesicular systems, and chemical delivery systems such as the prodrugs; (c) the developed and under-development controlled/continuous drug delivery systems including ocular inserts, collagen shields, ocular films, disposable contact lenses, and other new ophthalmic drug delivery systems; and (d) the newer trends directed towards a combination of drug delivery technologies for improving the therapeutic response of a non-efficacious drug. The fruitful resolution of the above-mentioned technological suggestions can result in a superior dosage form for both topical and intraocular ophthalmic application.     

基于深度强化学习的大规模电动汽车充换电负荷优化调度

针对大规模充换电站的聚合优化调度问题,提出一种基于SAC深度强化学习的充换电负荷实时优化调度策略。该策略充分考虑了负荷调控过程中的用户因素、系统因素和市场因素,能够实现大规模电动汽车与各类电力系统主体的友好互动。首先,考虑充换电站的发展规模和调度性能建立联合运行框架;其次,提出考虑多重用户特征的可调性识别模型对电动汽车的实际可调性进行判断;进而,考虑充换电站优化调度的多重时空特征,构建不同场景下可调充换电负荷的优化调度模型;然后,基于SAC算法求解并网充换电负荷的实时调度方案;最后,以电动汽车聚合优化虚拟电厂负荷为例,验证了SAC算法应用于大规模电动汽车充换电负荷实时优化调度的经济性和高效性。     

小波变换和数学形态学在行波法故障测距中应用比较

输电线路的行波法故障测距装置完成的主要任务是对录到的电压或者电流行波信号进行信号处理,最终实现故障定位。行波信号中的突变点所在时间点是故障出现的时间点。目前,信号(图像)处理中检测奇异值所用的工具有两种,小波变换和数学形态学。详细说明了小波变换和数学形态学用在行波法故障测距中信号处理部分的原理和相关算法,从不同角度进行了大量的仿真,对仿真所得到的数据进行分析和比较,从而得出二者用在行波法故障测距中都是可行的,同时又都具有各自的特点。     

基于灰关联分析的配电线路故障诊断方法

中性点不接地系统的短时接地故障诊断十分困难,本文依据故障特性提出了一种基于最优小波包基特征提取的故障诊断新方法.该方法应用小波奇异性检测功能,确诊故障过程;以最优小波包基提取故障信息,确定特征频段;然后,建立特征频段下各线路灰关联分析的数学模型,运用灰关联分析确诊故障线路.通过对4条10kV线路的仿真分析,验证了本方法的可行性及适应性.     

调校Foxmail的发件人地址自动匹配功能

从Beta5版本开始,Foxmail增加了发件人地址自动匹配的功能,也就是说收件箱中的“发件人”一栏显示的内容会与本地计算机地址簿中的“姓名”实现自动匹配。无论对方在客户端如何设置,我们在本机所看到的都是地址簿中的姓名,这样某份邮件究竟是哪一位发来的,你就不用进入地址簿反复查看,直接就可以搞清楚邮件的来龙去脉。