共查询到20条相似文献，搜索用时 629 毫秒
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高红霞 《太原大学教育学院学报》2002,20(4):77-79
随着计算机应用的日益广泛深入和计算机网络的普及,为保证计算机系统和网络通信的正常运行,计算机的安全问题已日益受到广泛的关注和重视.对于时下广大的网络用户来说,通过拨号方式来实现网络接入还是较为普遍的一种途径,黑客的入侵又经常通过拨号网络来实现的,所以如何提高拨号网络的安全已经成为非常重要的问题. 相似文献
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随着计算机科学技术的飞速发展,计算机及网络也更为广泛的走进千家万户。随之而来的的网络安全问题有由然而生,无论在广域网或局域网都存在自然和人为因素的威胁,网络的安全问题日益严峻,所以如何认识并提高网络的安全与防御是我们亟待解决的问题。本文针对计算机信息网络安全存在的一些问题进行浅析,并给出一系列防御措施。 相似文献
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李京 《中小学图书情报世界》2005,(Z3)
计算机网络技术的迅猛发展, 推动了图书馆向数字化转变,提高了文献信息的利用效率,扩大了图书馆的服务范围。随着图书馆计算机管理的实现,计算机网络安全问题日益凸显,成为确保数字图书馆正常运行迫切需要解决的问题。一、数字图书馆计算机网络安全的概念和特性数字图书馆计算机网络安全是指通过采取相关技术和管理等 相似文献
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李京 《中小学图书情报世界》2005,(11):92-93
计算机网络技术的迅猛发展．推动了图书馆向数字化转变，提高了文献信息的利用效率，扩大了图书馆的服务范围。随着图书馆计算机管理的实现，计算机网络安全问题日益凸显，成为确保数字图书馆正常运行迫切需要解决的问题。 相似文献
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随着计算机网络的蓬勃发展，路由器在网络中得到广泛运用，路由器的安全问题引起越来越多的企业、组织和个人的关注，结合实际运用，提出路由器安全性及通过AAA鉴权进行身份认证提高安全性的解决方案。 相似文献
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张康宁 《连云港师范高等专科学校学报》2004,(3):82-85
基于信息发展的今天，网络遍及千家万户，网络的安全成为首当其冲的问题。计算机网络安全的目标就是在通信和安全方面之间建立平衡。对计算机网络安全方面的服务可通过两方面来达到：一是访问控制的服务，二是通信安全的服务。要做到实际意义上的安全便是处理好安全和通信的关系，它要求我们从用户、计算机到网络都要加强网络安全的防范。 相似文献
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对传统的网络管理系统安全方面的局限性作了相关介绍,为解决这种日益突显重要的网管安全问题提供了基于GPRS的双信道远端接管系统的具体实现方案.该系统通过GPRS模块和网络实现双信道的对计算机等智能设备的安全远端接管,极大地提高了网管安全性能.对系统的整体构架,GPRS模块的工作原理和具体的双信道连接的实现算法以及该系统在提高网管的安全性方面的特点进行了阐述. 相似文献
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随着计算机网络的发展和Internet的广泛使用,同时也使计算机网络的安全问题日益突出和复杂,计算机网络体系结构是开放式的,给用户提供了资源的共享而且通过分散工作负荷提高了工作效率,因此也是这些问题增加了网络的安全脆弱性和复杂性,在这文章中论述了计算机网络安全技术和防火墙的主要技术特征。 相似文献
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计算机的安全问题是人们讨论的主要话题之一。计算机安全主要研究的是计算机病毒的防治和系统的安全。在计算机网络日益普及的今天，计算机安全的要求更高，涉及面更广。要求防治病毒，要求提高系统抵抗外来非法黑客的入侵，还要求提高对远程数据传输的保密性。通过安装防火墙，可以在内外网之间建立一道牢固的安全屏障。 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Anton Franks 《English in Education》1999,33(2):39-49
This paper looks at the way drama works to bring a model of an arts curriculum into reality. He also shows how drama is valuable when discussed as a separate, autonomous subject in the school curriculum as opposed to one subsumed within English. He argues for a view of the arts and gives an example of a sequence of work in an English GCSE class based around Arthur Miller's play View from the Bridge. From this he draws out several strands about the relationship of the drama curriculum to the individual students and teachers, the school, and to culture. He also emphasises the primacy of performance in drama education. 相似文献