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红外测控技术和单片机技术有着非常广泛的应用，本文介绍了一种基于单片机的红外测控系统，它采用了单片机控制技术和红外感应技术，集成了光学、电子、单片机和机械等技术于一体。该系统应用于自动冲水器的实际应用表明：系统工作可靠，成本低廉，经济效益显著。 相似文献
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近年来，智能天线技术已经成为移动通信中受到关注最多的技术之一。在无线基站或移动终端使用一个天线阵列并基于数字信号处理技术，对信号的接受和发射波束进行自适应的赋形，可以大大降低系统内的干扰，提高系统容量，降低发射功率并提高接收灵敏度。在大大提高系统性能的同时，还可以降低设备的成本。本述及了移动通信系统中的智能天线技术，给出了智能天线的概念、种类、工作原理及其实现方法。同时，中讨论了智能天线技术对移动通信系统性能的影响，并指出了智能天线应用于移动通信系统的技术挑战及发展方向。 相似文献
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本文介绍了多层分布式数据库技术MIDAS及其优点，并将MIDAS技术应用到开放式全自动化机房管理系统的开发中，阐述了系统的设计思想及多层分布式结构在系统中的实现方法，该项技术的应用，提高了系统的效率、稳定性、安全性和扩展性。 相似文献
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状态检测技术在防火墙中的应用 总被引：1，自引：0，他引：1
魏利华 《邵阳学院学报(社会科学版)》2003,2(5):60-62
从防火墙概念及现有技术出发，探讨了状态检测技术产生的背景，分析了状态检测技术的原理、应用和性能，指出防火墙系统的发展趋势是在防火墙产品中综合利用多种防火墙技术，开发复合功能的防火墙系统． 相似文献
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本文介绍了电子校务平台系统，并结合高等院校的教学实践，对高校的校务管理进行了分析和预测，采用现代网络技术、UML和．NET技术建立了该平台系统的框架和模型，实现了WEB分布式计算。 相似文献
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介绍Web Services和COM＋技术的特性及在OA系统中的应用，提出了基于Web Services和COM＋技术的三层分布式OA系统的体系结构.通过应用系统在逻辑上多层分离与物理上的分布实施，真正实现了跨平台、跨语言的软件代码重用，最后给出了系统实现实例，说明了用Web Services和COM＋技术实现资源整合和系统集成的方法. 相似文献
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数据挖掘技术在入侵检测系统中的应用研究 总被引：1，自引：0，他引：1
随着计算机网络技术的不断发展，信息安全问题变得越来越重要。传统的安全保护技术和防火墙技术已经远远不够，迫切需要一种能够及时发现并报告系统入侵的技术，即入侵检测系统（IDS）。入侵检测系统作为一种积极主动的安全防护措施，能检测未授权对象对系统的恶意攻击，并监控授权对象对系统资源的非法操作，阻止入侵行为。论文介绍了数据挖掘和入侵检测的有关知识，并且分析了在入侵检测系统使用数据挖掘技术的体系结构和检测模型的工作过程、功能，并对未来入侵检测系统的发展有所预测。 相似文献
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通过对福建省电力有限公司远程教育系统的开发，介绍了．NET技术特点和系统的体系结构，实现了．NET技术在开发远程教育系统中的应用，并对．NET技术作了初步的探索。 相似文献
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李彦辰 《邯郸职业技术学院学报》2023,(1):48-51+55
就计算机技术系统和信息技术存在的安全问题展开研究，重点从计算机技术系统和信息技术安全问题、安全防范技术，安全解决对策和安全法制政策等方面，剖析了当前计算机技术系统和信息网络安全存在的主要问题及原因，并对常见计算机技术系统和计算机信息网络攻击存在的问题，产生的原因以及影响要素，从技术层面提出了多元化多层次多渠道的综合的、智能的、法理的解决对策和应对方案。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 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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《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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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 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