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中国公众科技网科普平台的作用
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作者 葛霆 《科协论坛》 2002年第8期22-24,共3页
一年前,中国科协信息中心与北京、上海、江苏、湖北、重庆、广东六省市科协及有关部门本着'自发自愿,优势集成,资源共享,共荣辱,共兴衰'的精神,共同发起联合共建中国公众科技网(www.cpst.net.cn)科普平台。六省市科协发挥各自... 一年前,中国科协信息中心与北京、上海、江苏、湖北、重庆、广东六省市科协及有关部门本着'自发自愿,优势集成,资源共享,共荣辱,共兴衰'的精神,共同发起联合共建中国公众科技网(www.cpst.net.cn)科普平台。六省市科协发挥各自的资源优势,承办不同的科普栏目,同时,所办的科普网站成为网中的地方站。经大家共同努力,自2001年6月至2002年4月,六省市科协在网上科普平台发布科普文章少则数百篇,多则近3000篇,大大繁荣了科普创作。一年来共建工作使科普平台发挥了如下作用: 展开更多
关键词 中国公众科技网 科普平台 WWW.cpst.net.cn
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Two Pass Port Scan Detection Technique Based on Connection Pattern and Status on Sampled Data 被引量:1
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作者 Sunil Kumar Kamlesh Dutta Ankit Asati 《Journal of Computer and Communications》 2015年第9期1-8,共8页
Anomaly detection is now very important in the network because the increasing use of the internet and security of a network or user is a main concern of any network administrator. As the use of the internet increases,... Anomaly detection is now very important in the network because the increasing use of the internet and security of a network or user is a main concern of any network administrator. As the use of the internet increases, so the chances of having a threat or attack in the network are also increasing day by day and traffic in the network is also increasing. It is very difficult to analyse all the traffic data in network for finding the anomaly in the network and sampling provides a way to analyse the anomalies in network with less traffic data. In this paper, we propose a port scan detection approach called CPST uses connection status and pattern of the connections to detect a particular source is scanner or benign host. We also show that this approach works efficiently under different sampling methods. 展开更多
关键词 PORT SCAN TRW TAPS cpst PACKET Sampling Flow Sampling
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5种治疗中、老年人下呼吸道感染方案的成本-效果分析
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作者 王友多 《中国医院用药评价与分析》 2002年第5期285-286,共2页
目的:探讨不同药物治疗方案对同一种疾病所产生的经济效果。方法:运用药物经济学成本-效果分析法对5种治疗中、老年人下呼吸道感染方案,即来立信组、环丙沙星组、头孢拉定组、头孢噻肟钠组及哌拉西林钠组进行回顾性分析评价。结果:哌拉... 目的:探讨不同药物治疗方案对同一种疾病所产生的经济效果。方法:运用药物经济学成本-效果分析法对5种治疗中、老年人下呼吸道感染方案,即来立信组、环丙沙星组、头孢拉定组、头孢噻肟钠组及哌拉西林钠组进行回顾性分析评价。结果:哌拉西林钠组方案为最佳治疗方案。结论:药物经济学对优化治疗方案,帮助医师、药师选择最佳治疗方案具有重要作用。 展开更多
关键词 下呼吸道感染 成本-效果分析 治疗
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Cyber-Syndrome:Concept,Theoretical Characterization,and Control Mechanism
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作者 Feifei Shi Huansheng Ning +1 位作者 Liming Chen Sahraoui Dhelim 《Tsinghua Science and Technology》 SCIE EI CAS CSCD 2024年第3期721-735,共15页
The prevalence of social media and mobile computing has led to intensive user engagement in the emergent Cyber-Physical-Social-Thinking(CPST)space.However,the easy access,the lack of governance,and excessive use has g... The prevalence of social media and mobile computing has led to intensive user engagement in the emergent Cyber-Physical-Social-Thinking(CPST)space.However,the easy access,the lack of governance,and excessive use has generated a raft of new behaviors within CPST,which affects users’physical,social,and mental states.In this paper,we conceive the Cyber-Syndrome concept to denote the collection of cyber disorders due to excessive or problematic Cyberspace interactions based on CPST theories.Then we characterize the Cyber-Syndrome concept in terms of Maslow’s theory of Needs,from which we establish an in-depth theoretical understanding of Cyber-Syndrome from its etiology,formation,symptoms,and manifestations.Finally,we propose an entropy-based Cyber-Syndrome control mechanism for its computation and management.The goal of this study is to give new insights into this rising phenomenon and offer guidance for further research and development. 展开更多
关键词 Cyber-Syndrome cyber-physical systems Cyber-Physical-Social-Thinking(cpst)space Maslow’sHierarchy of Needs ENTROPY
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基于S-PMSM驱动系统直流环节的电容电流谐波抑制控制策略
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作者 张鹏程 张志刚 《电子技术(上海)》 2023年第2期398-400,共3页
阐述一种基于双逆变器的载波交错技术(CPST),通过上下变流器的开关时钟信号寻优,使部分谐波转换成相间谐波环流和降低了电压波动幅度。实现减小直流环节电容电流谐波,延长了直流环节电容器的使用寿命。通过Matlab/Simulink建立仿真模型... 阐述一种基于双逆变器的载波交错技术(CPST),通过上下变流器的开关时钟信号寻优,使部分谐波转换成相间谐波环流和降低了电压波动幅度。实现减小直流环节电容电流谐波,延长了直流环节电容器的使用寿命。通过Matlab/Simulink建立仿真模型,验证了该控制策略的有效性。 展开更多
关键词 控制技术 直流环节电容 载波交错技术
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