A ransomware attack that interrupted the operation of Colonial Pipeline(a large U.S.oil pipeline company),showed that security threats by malware have become serious enough to affect industries and social infrastructu...A ransomware attack that interrupted the operation of Colonial Pipeline(a large U.S.oil pipeline company),showed that security threats by malware have become serious enough to affect industries and social infrastructure rather than individuals alone.The agents and characteristics of attacks should be identified,and appropriate strategies should be established accordingly in order to respond to such attacks.For this purpose,the first task that must be performed is malware classification.Malware creators are well aware of this and apply various concealment and avoidance techniques,making it difficult to classify malware.This study focuses on new features and classification techniques to overcome these difficulties.We propose a behavioral performance visualization method using utilization patterns of system resources,such as the central processing unit,memory,and input/output,that are commonly used in performance analysis or tuning of programs.We extracted the usage patterns of the system resources for ransomware to performbehavioral performance visualization.The results of the classification performance evaluation using the visualization results indicate an accuracy of at least 98.94%with a 3.69%loss rate.Furthermore,we designed and implemented a framework to perform the entire process—from data extraction to behavioral performance visualization and classification performance measurement—that is expected to contribute to related studies in the future.展开更多
目的分析医疗机构护士遭遇不文明行为的研究现状,探讨其前沿热点和未来趋势,为今后的研究提供思路和启示。方法基于Web of Science^(TM)核心合集,检索自建库至2025年4月30日发表的相关文献,应用VOSviewer和CiteSpace软件进行文献计量学...目的分析医疗机构护士遭遇不文明行为的研究现状,探讨其前沿热点和未来趋势,为今后的研究提供思路和启示。方法基于Web of Science^(TM)核心合集,检索自建库至2025年4月30日发表的相关文献,应用VOSviewer和CiteSpace软件进行文献计量学分析。结果共检索到162篇文献,总体呈波动性增长,自2014年起发文量出现爆发式增长;美国在该研究领域占据领军地位,发文量及被引频次均居世界第一,中国位列第四;LASCHINGER,HKS和CLARK,CM是发文量最多的作者,《Journal of Nursing Management》是载文量最多的期刊,University of Western Ontario是重要的研究机构;研究热点主要集中在负面影响、护理质量以及干预策略等方面。结论护士遭遇不文明行为的研究在国际上已形成热潮,而我国稍显滞后,希望能够紧随国际步伐,结合研究热点,探索并建立适合中国国情的“护士职业安全与尊严保障体系”,以推动护理事业的健康、可持续发展。展开更多
目的:分析国内外老年人久坐行为研究的热点与前沿,以期为相关研究提供参考。方法:采用CiteSpace 6.4.R1软件对2005年1月—2025年7月中国知网与Web of Science核心合集中老年人久坐行为的相关文献进行可视化分析。结果:共纳入中文文献87...目的:分析国内外老年人久坐行为研究的热点与前沿,以期为相关研究提供参考。方法:采用CiteSpace 6.4.R1软件对2005年1月—2025年7月中国知网与Web of Science核心合集中老年人久坐行为的相关文献进行可视化分析。结果:共纳入中文文献87篇、英文文献867篇。年发文量总体呈上升趋势,但国内发文较国际仍有较大差距。研究热点主要聚焦于身体活动、积极老龄化等方面;未来研究趋势将聚焦于久坐行为对心理健康和睡眠质量的影响,并强调文化适应性和规范化实践转化的重要性。结论:国内该领域研究尚属于探索阶段,目前发展较为缓慢。未来可借鉴国际研究热点与前沿方向,拓展研究思路,加强对该领域的关注与投入,以促进我国在老年人久坐行为与健康研究方面的深入发展。展开更多
Okinawa in the subtropical islands enclosed in the ocean has a problem that corrosion of structures progresses quickly because of high temperature, high humidity and adhesion of sea-water mists flying from sea. Author...Okinawa in the subtropical islands enclosed in the ocean has a problem that corrosion of structures progresses quickly because of high temperature, high humidity and adhesion of sea-water mists flying from sea. Author is interested in corrosion of bridge made of weatherability steel. Therefore, it needs to investigate the flow structure around bridge beams and behavior of sea-water mist (droplet). In this paper, flow visualization and PIV are attempted to understand the flow structures around bridge beams and, furthermore, numerical approach of motion of droplets is attempted to understand the collision of sea-water mists on the bridge wall.展开更多
基金This work was supported by the Institute of Information&Communications Technology Planning&Evaluation(IITP)(Project No.2019-0-00426%,10%)the ICT R&D Program of MSIT/IITP(Project No.2021-0-01816,A Research on Core Technology of Autonomous Twins for Metaverse,10%)National Research Foundation of Korea(NRF)grant funded by the Korean government(Project No.NRF-2020R1A2C4002737%,80%).
文摘A ransomware attack that interrupted the operation of Colonial Pipeline(a large U.S.oil pipeline company),showed that security threats by malware have become serious enough to affect industries and social infrastructure rather than individuals alone.The agents and characteristics of attacks should be identified,and appropriate strategies should be established accordingly in order to respond to such attacks.For this purpose,the first task that must be performed is malware classification.Malware creators are well aware of this and apply various concealment and avoidance techniques,making it difficult to classify malware.This study focuses on new features and classification techniques to overcome these difficulties.We propose a behavioral performance visualization method using utilization patterns of system resources,such as the central processing unit,memory,and input/output,that are commonly used in performance analysis or tuning of programs.We extracted the usage patterns of the system resources for ransomware to performbehavioral performance visualization.The results of the classification performance evaluation using the visualization results indicate an accuracy of at least 98.94%with a 3.69%loss rate.Furthermore,we designed and implemented a framework to perform the entire process—from data extraction to behavioral performance visualization and classification performance measurement—that is expected to contribute to related studies in the future.
文摘目的分析医疗机构护士遭遇不文明行为的研究现状,探讨其前沿热点和未来趋势,为今后的研究提供思路和启示。方法基于Web of Science^(TM)核心合集,检索自建库至2025年4月30日发表的相关文献,应用VOSviewer和CiteSpace软件进行文献计量学分析。结果共检索到162篇文献,总体呈波动性增长,自2014年起发文量出现爆发式增长;美国在该研究领域占据领军地位,发文量及被引频次均居世界第一,中国位列第四;LASCHINGER,HKS和CLARK,CM是发文量最多的作者,《Journal of Nursing Management》是载文量最多的期刊,University of Western Ontario是重要的研究机构;研究热点主要集中在负面影响、护理质量以及干预策略等方面。结论护士遭遇不文明行为的研究在国际上已形成热潮,而我国稍显滞后,希望能够紧随国际步伐,结合研究热点,探索并建立适合中国国情的“护士职业安全与尊严保障体系”,以推动护理事业的健康、可持续发展。
文摘目的:分析国内外老年人久坐行为研究的热点与前沿,以期为相关研究提供参考。方法:采用CiteSpace 6.4.R1软件对2005年1月—2025年7月中国知网与Web of Science核心合集中老年人久坐行为的相关文献进行可视化分析。结果:共纳入中文文献87篇、英文文献867篇。年发文量总体呈上升趋势,但国内发文较国际仍有较大差距。研究热点主要聚焦于身体活动、积极老龄化等方面;未来研究趋势将聚焦于久坐行为对心理健康和睡眠质量的影响,并强调文化适应性和规范化实践转化的重要性。结论:国内该领域研究尚属于探索阶段,目前发展较为缓慢。未来可借鉴国际研究热点与前沿方向,拓展研究思路,加强对该领域的关注与投入,以促进我国在老年人久坐行为与健康研究方面的深入发展。
文摘Okinawa in the subtropical islands enclosed in the ocean has a problem that corrosion of structures progresses quickly because of high temperature, high humidity and adhesion of sea-water mists flying from sea. Author is interested in corrosion of bridge made of weatherability steel. Therefore, it needs to investigate the flow structure around bridge beams and behavior of sea-water mist (droplet). In this paper, flow visualization and PIV are attempted to understand the flow structures around bridge beams and, furthermore, numerical approach of motion of droplets is attempted to understand the collision of sea-water mists on the bridge wall.
