基于混合模型的入侵检测系统设计     

卢朝辉  李维民 《贵阳金筑大学学报》2006,(1)

随着Internet的高速发展,网络安全问题越来越引人注目,入侵检测系统越来越多地引起了人们的重视。本文提出一个基于混合模型的入侵检测系统,从系统调用,审计日志,网络协议三个层次,分析数据特征,建立相应的检测模型。使系统既可以检测新的攻击,又可以具有较低的误警率。  相似文献   

体操动作技能再认的信号检测论研究   总被引：1，自引：0，他引：1  

林呈生 《体育科学》1993,13(2):78-83

以四种不同的学习方式(视觉表象、动觉表象、视觉表象伴随言语指导、动觉表象伴随言语指导)及三种不同的实验对象(教育系学生、体育系普修体操学生、体育系专修体操学生)从体育动作技能形成的角度,以信号检测理论手段,探讨若干体操动作再认的特征。结果表明:(1)对体操动作再认的辨别力d′值随专业水平的提高而提高。(2)四种学习方式所得 d′值比较,动觉表象学习方式所得 d′值最高。(3)三种对象关于动觉表象学习所得 d′值 F 检验呈显著性差异证明。动觉表象因学习程度不同存在着水平和层次的差别。(4)动觉表象学习方式所得 d′值与体操成绩呈显著性正相关。d′值可作为衡量体操成绩好差的间接指标。  相似文献   

国内(不含港、澳、台)英文版学术期刊的发展和现状   总被引：9，自引：0，他引：9  

张月红  王森  李江  谌群芳 《大学图书馆学报》2002,20(1):63-64,74

文章从中国现代历史的角度详细查证了国内(不含港澳台)出版的英文版学术期刊的数量,并按刊物创办的时间顺序列出了210份英文版学术期刊的信息资料,进而根据中国科技信息所近几年的期刊统计资料分析了英文版学术期刊在国际科学界交流中的重要作用,同时也提出了期刊目前在国外发行的困惑。  相似文献   

基于GSM的家庭热水器远程智能控制系统设计     

王礼坊  江奇隆  鄢仁建  杨戬  王建国  李建坤 《科技广场》2012,(1):173-175

针对现有的GSM无线网络,介绍了基于GSM的家庭热水器远程智能控制系统的设计及实现方法。通过短信远程控制热水器,对水进行加热,并且可以根据天气冷暖的不同利用两个不同功率的加热设备对水加热到不同的设定温度,达到节能目的。同时,利用DS18B20温度传感器对水温进行检测,当达到设定温度时,停止加热,GSM模块在单片机控制下,利用GSM网络,将加热好的信息通过短信的方式发送到预先设定好的手机中,达到了远程控制的功能。通过测试,实现了远程智能控制。  相似文献   

网络入侵检测技术在图书馆网络系统中的应用     

宋继军 《科技广场》2012,(7):48-50

随着互联网的迅速发展,许多新的技术被引入信息安全领域。本文针对图书馆网络的特点及保护信息的实际需要,设计了应用于高校图书馆网络入侵检测系统的结构,并对涉及的关键技术进行了实验分析。  相似文献   

Analyzing the evidence of an IPR take-off in China and India     

Manuel Mira Godinho  Vítor Ferreira 《Research Policy》2012,41(3):499-511

Both China and India have been experiencing a historical take-off in the use of intellectual property rights (IPR). In terms of trademark applications filed with domestic IP offices in 2009, the evidence demonstrates that China now ranks 1st worldwide and India 5th, while for patent filings China ranks 3rd worldwide and India ranks 9th. This performance is remarkable as both China and India experienced negligible demand for IPR protection as recently as two decades ago. The IPR take up trends in these two countries are analyzed in detail, highlighting the structure of patent and trademark demand since 1990. Specifically, the available series are broken down and analyzed according to: (i) national versus foreign origin of patents and trademarks; (ii) technological (IPC) and trademark (NICE) classes; and (iii) the major individual patent users in each country. The data used refers to applications in the Chinese and Indian IP offices although the demand from residents of these two countries in both the international and other national systems is also assessed. Beyond the existing momentum in IPR registrations by China and India and their capacity to maintain it into the near future, the paper addresses practical questions about the strategies, motives and benefits behind the current trends. In particular, we seek to evaluate the capacity of both China's and India's National Innovation Systems to internalize the potential returns of this increasing demand for IPR. The insight reached finds that should both China and India sustain their current IPR growth rates, they will be able to catch up with the most advanced economies within the time span of a few decades.  相似文献   

How do foreign firms patent in emerging economies with weak appropriability regimes? Archetypes and motives     

Marcus Matthias Keupp  Sascha FriesikeMaximilian von Zedtwitz 《Research Policy》2012,41(8):1422-1439

Foreign firms patent in emerging economies with weak appropriability regimes at an increasing rate. This phenomenon constitutes a paradox since in such a setting foreign firms should have weak incentives to patent. In an attempt to resolve this paradox, we conducted an inductive analysis of 11 foreign firms that patent in such a setting, using the case of China as our empirical context. We identify four archetypes of foreign firms and three key antecedents the interaction of which determines which archetype a firm can be subsumed under.Our study complements the developed-economy focus of the extant appropriation literature by adding an international perspective. We extend previous econometric studies by identifying salient factors on the firm level that determine the extent to which a foreign firm patents in emerging economies with a weak appropriability regime, highlighting that the extent of a firm's motivation to maintain its freedom to operate can supersede imitability concerns. We also comment on the practical implications of these contributions for managers of foreign firms. Highlighting a structural conflict of interest between foreign firms from developed economies and the development goals of an emerging economy, we point to the generalizability of our results to a wide range of other emerging economies worldwide.  相似文献   

高职《新潮实用英语》教材特点及应用方法探索     

冼嘉璐 《科教文汇》2012,(11):123-123,127

《新潮实用英语（第二版）系列教程》这套教程编写的理念是以学生为本,它努力体现了新《基本要求》的精神：更新观念,更新内容,更新教学,充分体现了国家对大学英语加强实用性的教学要求。本文分析总结了它的特点,并探索出实践中应用此教材的方法：在教学中要尊重学生的兴趣和需求、重点培养学生的英语交际能力、充分利用好本教材,拓展课外延伸。  相似文献   

替代性世界：学习环境新方向     

Bebo White  庄秀丽  康文霞 《现代远程教育研究》2010,(5):50-54

教育领域一直以评价和采用交互创新技术为先驱,这些交互创新技术为教育技术专家探索计算机辅助的教学提供了实践的土壤＂。替代性世界＂（Alternative worlds）是完全实时的、高保真的、用户高度介入的学习环境。其特点是具有丰富的环境、丰富的接口、操作驱动和有效应用于教与学＂。替代性世界＂在混合式学习中可以冲破传统教育屏障,拓展教师和学习者角色,为学习者提供时间和空间的便利,实现终身学习＂。替代性世界＂学习环境是一个新的研究领域,它为专注于人机交互、社会网络和虚拟现实的教育技术专家开拓了新方向和新空间。  相似文献   

Mobile banking use: A comparative study with Brazilian and U.S. participants     

《International Journal of Information Management》2019

As we can see in recent studies on mobile banking, there is an increasing number of papers addressing this new technology. Mobile banking contributes to the quality of life of people living in both developed countries, and also in emerging economies. In this context, we develop this paper in order to compare the determinants of mobile banking use between respondents from two countries with different levels of development: Brazil and the United States. Our theoretical model includes six variables as determinant factors of mobile banking use. In order to analyze path coefficients and test the six hypotheses, we employed a structural equation model. We also employed a quantitative test (multi-group analysis) to analyze the difference of path coefficients between the models of the two countries. The main results indicate similarities among the perceptions of the respondents that participated in the survey, but differences in coefficient magnitude.  相似文献