共查询到17条相似文献，搜索用时 203 毫秒
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中美图书馆MyLibrary个性化服务系统的比较研究 总被引：9，自引：0，他引：9
文章对中美图书馆有代表性的几个MyLibrary服务系统从功能及技术框架两方面作了比较研究，并对进一步开发我国MyLibrary服务系统功能进行了探讨。 相似文献
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在对比分析国内外高校图书馆MyLibrary个性化信息服务应用现状的基础上,结合MyLibrary系统的自身特点和国内高校图书馆个性化服务门户存在的主要问题,构建了一个基于MyLibrary的可扩展的高校数字图书馆个性化门户服务框架。该框架除了具有基本的资源定制功能外,还进一步完善了用户个性化服务功能,并扩展了馆员服务功能,旨在通过该框架的设计,探讨国内高校数字图书馆个性化门户服务的应用前景与发展趋势,以期促进高校数字校园个性化服务门户的建立与应用。 相似文献
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基于MyLibrary个性化信息服务的研究 总被引：10，自引：1，他引：10
从图书馆个性化信息服务出发，论述了国内外图书馆以MyLibrary为代表的研究进展情况，并提出图书馆MyLibrary个性化服务用户建模设计方案。 相似文献
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文章介绍了MyLibrary的定义、特点和功能服务，结合国内外MyLibrary研究概况以及运用实践，建立并设计了具有本馆个性化服务特色的模型方案。 相似文献
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苏媛媛 《内蒙古科技与经济》2014,(17):55-59
探讨了基于B/S运行构架和Ruby on Rails设计模式下,进行MyLibrary系统开发和后台数据库设计的基本方法和步骤,着重论述了系统模型设计、数据库设计、系统设计等功能模块的设计与实现过程。 相似文献
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论述了MyLibrary的基本概念、工作原理和主要功能,分析了学科数字资源信息服务的个性化特征,提出了基于MyLibrary的学科数字资源个性化信息服务模式。 相似文献
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文章就MyLibrary、RSS、Toolbar、手机图书馆、活人图书馆的涵义、功能、发展趋势等进行 相似文献
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在分析数字图书馆个性化门户服务模式的基础上,结合目前国内高校图书馆个性化信息服务的现状和发展趋势,提出一个基于MyLibrary的高校数字图书馆个性化门户服务框架,并分析了框架主要功能和特色。该框架综合考虑用户的服务需求和数字图书馆现有服务组件的功能,并利用代理模式整合各种服务方式,以满足用户对一站式服务的需求。 相似文献
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This paper investigates stability problems of a class of nonlinear impulsive switching systems with time-varying delays. Based on the common Lyapunov function method and Razumikhin technique, several stability criteria are established for nonlinear impulsive switching systems with time-varying delays. Our results show that switching systems can be stabilized by impulsive switching signals even if the system matrices are all unstable. In the absence of impulses, some of our results reduce to similar stability criteria for nonimpulsive switching systems in some recent research articles. Several examples with simulations are given to illustrate the efficiency of our results. 相似文献
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实时数据库系统中的事务具有显示的时间约束,因此,与传统的数据库系统相比,实时数据库系统并发控制协议有了一定的扩展。在分析实时数据库系统中实时事务并发执行的新特点的基础上,介绍了几种典型的实时数据库并发控制协议。 相似文献
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Shaohua Long Shouming Zhong Hongbo Guan Dian Zhang 《Journal of The Franklin Institute》2019,356(12):6015-6040
This paper deals with the exponential stability problem for a class of neutral singular systems with Markovian jump parameters. The considered systems involve time-varying delays not only in their state but also in their derivatives of state. By using the Lyapunov–Krasovskii functional method, some sufficient conditions are derived, which ensure that the considered systems are regular, impulse-free and exponentially stable. Finally, some numerical examples are employed to demonstrate the effectiveness of the obtained approaches. 相似文献
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In this paper, the problem of mean-square integral input-to-state stability of nonlinear impulsive semi-Markov jump delay systems is investigated. By using stochastic Lyapunov functions together with Razumikhin technique, some sufficient conditions for mean-square integral input-to-state stability for a class of nonlinear impulsive semi-Markov jump delay systems are developed. In particular, the results obtained generalize and complement some recent literature. Finally, some numerical examples are given to show the effectiveness and advantages of the proposed techniques. 相似文献
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《Journal of The Franklin Institute》2022,359(15):8171-8187
This paper is assigned to study the stability and controllability of fuzzy singular dynamical systems. Some new notions such as granular fuzzy matrix norm, the algebraic operations on the space of fuzzy matrices, fuzzy equilibrium point, and the granular fuzzy transfer function of fuzzy singular dynamical systems are introduced. Furthermore, by presenting some theorems proved in this paper, the fuzzy solutions of fully fuzzy singular dynamical systems are obtained. Moreover, some new notions regarding the analysis of the stability of fuzzy singular dynamical systems are given. The stability analysis underlies the concepts of fuzzy stable, fuzzy critical stable, and fuzzy unstable singular dynamical systems. Besides using the notions of controllability of the fuzzy slow and fast subsystems, the concept of granular controllability of the fuzzy singular dynamical system is investigated. 相似文献
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Xu-Guang Li Jun-Xiu Chen Silviu-Iulian Niculescu Arben Çela 《Journal of The Franklin Institute》2018,355(17):8683-8697
Most of the reported Lotka–Volterra examples have at most one stability interval for the delay parameters. Furthermore, the existing methods fall short in treating more general case studies. Inspired by some recent results for analyzing the stability of time-delay systems, this paper focuses on a deeper characterization of the stability of Lotka–Volterra systems w.r.t. the delay parameters. More precisely, we will introduce the recently-proposed frequency-sweeping approach to study the complete stability problem for a broad class of linearized Lotka–Volterra systems. As a result, the whole stability delay-set can be analytically determined. Moreover, as a significant byproduct of the proposed approach, some Lotka–Volterra examples are found to have multiple stability delay-intervals. To the best of the authors’ knowledge, such a characterization represents a novelty for having some insights in the population dynamics: in some situations, a longer maturation period of species is helpful for the stability of a population system. 相似文献