图书馆服务器和磁盘阵列管理

本文论述了服务器和磁盘阵列在图书馆中的应用和管理,说明了服务器和磁盘阵列在图书馆电子资源建设中的重要作用,进一步揭示了网络安全和数据安全在服务器和磁盘阵列管理和维护过程中的重要性。     

浅析基于ASP.NET的Web网络应用程序的安全开发

Web网络应用开发中,安全性是要考虑的关键问题,本文作者从系统规划阶段、设计开发阶段、发布运行阶段三个方面详细阐述安全策略的实现,总结出如何充分利用ASP.NET的安全机制、数据库安全控制、增强管理员网络安全防范意识,构建性能安全的Web应用程序。     

网页色彩设计的情感因素

在网页设计中,色彩是营造情感的一个重要因素。用户对不同的网页色彩及其色调具有不同的情感反应。设计者在做站点界面色彩设计时,既要突出以用户为中心的设计理念,同时要深入分析色彩给用户带来的情感上的不同反应,目的是通过色彩的设计营造一种轻松、愉悦的使用环境。     

Kubische Berechnung der Retentionsindices ohne Kenntnis der Totzeit tm

Zusammenfassung In der vorliegenden Arbeit wird eine Methode zur Retentionsindex-Bestimmung beschrieben, die von einem kubischen Zusammenhang zwischen Bruttoretentionszeit-Differenzen der Referenzhomologen und der Kohlenstoffzahl ausgeht. Hieraus ergeben sich direkt die Nettoretentionszeiten. Der Fehler der Totzeitbestimmung entfällt bei dieser Methode. Mit den so gewonnenen Nettoretentionszeiten erhält man über einen kubischen Zusammenhang zwischen 1g t_s=f(C) die Retentionsindices. Extrapolationen und Interpolationen sind über 300 Retentionsindexeinheiten mit einem mittleren Fehler von ±0,02 Retentionsindexeinheiten möglich. Das Verfahren bietet sich für eine automatische Berechnung der I-Werte mittels on-line-Datenverarbeitung an.

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Cubic calculation of retention indices without determining the dead-time t_m

Summary The method for the calculation of retention indices described here is based on a third order relationship between the logarithm of differences of unadjusted retention times of homologues and the carbon number. From this adjusted retention times are directly calculated. A determination of the dead-time is not necessary thus avoiding the errors connected with this factor. A cubic equation for the logarithm of the adjusted retention time lg t_s as a function of carbon number C_n is used for the retention index calculation. Extrapolations and interpolations can be done over a range of 300 index units with an average deviation of ±0.02 i.u.. The method offers the possibility of an automated on-line calculation of retention indices by computer merely on the basis of unadjusted retention times.

     

对数正态风频模型的拟合误差

讨论对数正态风频模型的各种参数估算方法,给出拟合误差与风场统计资料及参数估算方法之间的关系式。     

模式识别在测井相分析中的应用

在测井相分析过程中,提取了与岩相有关的测井响应特征,进行了模糊聚类分析,形成其测井相模式。该模式通过岩－电关系库,应用模式识别技术,实现向岩相的转化,形成岩性的系统剖面。     

远程教育管理技术及其实现

分析了远程教育管理涉及的教育模式和管理内容,并给出了基于ＣＥＲＮＥＴ、Ｉｎｔｅｒｎｅｔ网络环境下的初步实施方案,对阐述了如何实现ＷＷＷ服务器对数据库的高效防间和系统的安全等有关技术问题。     

An <Emphasis Type="BoldItalic">in silico</Emphasis> approach for screening flavonoids as P-glycoprotein inhibitors based on a Bayesian-regularized neural network

Summary P-glycoprotein (P-gp), an ATP-binding cassette (ABC) transporter, functions as a biological barrier by extruding cytotoxic agents out of cells, resulting in an obstacle in chemotherapeutic treatment of cancer. In order to aid in the development of potential P-gp inhibitors, we constructed a quantitative structure–activity relationship (QSAR) model of flavonoids as P-gp inhibitors based on Bayesian-regularized neural network (BRNN). A dataset of 57 flavonoids collected from a literature binding to the C-terminal nucleotide-binding domain of mouse P-gp was compiled. The predictive ability of the model was assessed using a test set that was independent of the training set, which showed a standard error of prediction of 0.146 ± 0.006 (data scaled from 0 to 1). Meanwhile, two other mathematical tools, back-propagation neural network (BPNN) and partial least squares (PLS) were also attempted to build QSAR models. The BRNN provided slightly better results for the test set compared to BPNN, but the difference was not significant according to F-statistic at p = 0.05. The PLS failed to build a reliable model in the present study. Our study indicates that the BRNN-based in silico model has good potential in facilitating the prediction of P-gp flavonoid inhibitors and might be applied in further drug design.     

基于ASP技术的研究生网上调剂系统的实现

针对五邑大学研究生招生调剂工作的现状,叙述了建立研究生网上调剂系统的必要性,提出了基于ASP技术的调剂系统实现方案.该系统应用于实际,加快了调剂信息的收集和处理速度,节省了大量的人力和财力.     

青少年网络犯罪心理浅析

介绍青少年网络犯罪问题产生的背景及网络犯罪的特点,剖析青少年网络犯罪心理,通过对青少年网络犯罪实例的分析,提出预防青少年网络犯罪的方法.