Teacher_centered classroom teaching makes students to be passivereceiversandunabletouseEnglishasaneffectivetool.ThispaperfocusesonusingdiscussioninEFLclassroomandintroducesthepractisingmethodsofeachstepindetail.Thepap...Teacher_centered classroom teaching makes students to be passivereceiversandunabletouseEnglishasaneffectivetool.ThispaperfocusesonusingdiscussioninEFLclassroomandintroducesthepractisingmethodsofeachstepindetail.ThepaperexpectstofindanewandmoreeffectivepatternthroughanalysisandargumentationtomakestudentsmoreskillfulinusingEnglishanddevelopabetterhabitinclassroomteachingactivities.展开更多
A novel method case-based reasoning was proposed for suspicious behavior recognition. The method is composed of three departs: human behavior decomposition, human behavior case representation and case-based reasoning....A novel method case-based reasoning was proposed for suspicious behavior recognition. The method is composed of three departs: human behavior decomposition, human behavior case representation and case-based reasoning. The new approach was proposed to decompose behavior into sub-behaviors that are easier to recognize using a saliency-based visual attention model. New representation of behavior was introduced, in which the sub-behavior and the associated time characteristic of sub-behavior were used to represent behavior case. In the process of case-based reasoning, apart from considering the similarity of basic sub-behaviors,order factor was proposed to measure the similarity of a time order among the sub-behaviors and span factor was used to measure the similarity of duration time of each sub-behavior, which makes the similarity calculations more rational and comprehensive.Experimental results show the effectiveness of the proposed method in comparison with other related works and can run in real-time for the recognition of suspicious behaviors.展开更多
Applying high-speed machining technology in shop floor has many benefits, such as manufacturing more accurate parts with better surface finishes. The selection of the appropriate machining parameters plays a very impo...Applying high-speed machining technology in shop floor has many benefits, such as manufacturing more accurate parts with better surface finishes. The selection of the appropriate machining parameters plays a very important role in the implementation of high-speed machining technology. The case-based reasoning is used in the developing of high-speed machining database to overcome the shortage of available high-speed cutting parameters in machining data handbooks and shop floors. The high-speed machining database developed in this paper includes two main components: the machining database and the case-base. The machining database stores the cutting parameters, cutting tool data, work pieces and their materials data, and other relative data, while the case-base stores mainly the successfully solved cases that are problems of work pieces and their machining. The case description and case retrieval methods are described to establish the case-based reasoning high-speed machining database. With the case retrieval method, some succeeded cases similar to the new machining problem can be retrieved from the case-base. The solution of the most matched case is evaluated and modified, and then it is regarded as the proposed solution to the new machining problem. After verification, the problem and its solution are packed up into a new case, and are stored in the case-base for future applications.展开更多
"New Normal"is the basic transition modality existing in the Chinese society to the historical development stage and the new normal mode has special pattern of manifestation in political,economic,cultural,so..."New Normal"is the basic transition modality existing in the Chinese society to the historical development stage and the new normal mode has special pattern of manifestation in political,economic,cultural,social,legal and military fields.Recognizing,adapting to and leading new normal should become the basic content in the work of the party and the country in the coming period.展开更多
致灾环境因子是滑坡易发性预测建模的输入变量,是指影响滑坡发生、发展和分布的各种边坡自然属性因子。类型齐全且意义明确的致灾环境因子,对提高滑坡易发性结果的准确性和可靠性至关重要。为了进一步明确致灾环境因子的研究现状和未来...致灾环境因子是滑坡易发性预测建模的输入变量,是指影响滑坡发生、发展和分布的各种边坡自然属性因子。类型齐全且意义明确的致灾环境因子,对提高滑坡易发性结果的准确性和可靠性至关重要。为了进一步明确致灾环境因子的研究现状和未来展望,本研究在Web of Science的核心合集数据库中进行了文献检索,标题中包含“landslide susceptibility”,出版日期范围从20130101-20231231,收集了767篇滑坡易发性英文论文构成文献数据库。首先统计每篇文献中致灾环境因子数量、获取方法、来源、重要性和认可度等信息,然后详述了致灾环境因子的定义和物理意义;之后对致灾环境因子的优化选取/组合方法、因子联接方法、因子误差及其适宜性等特征进行了讨论,为后续预测滑坡易发性时选取致灾环境因子的不确定性研究提供参考。综述结果表明:(1)文献数据库中共统计出82种致灾环境因子,使用频率较高的因子有40余种,其中坡度、坡向、高程、岩性是使用频率最高的4个因子,坡度、高程、公路密度、岩性、降雨等因子在滑坡易发性预测中的重要性依次增高;(2)发现采用类型齐全且物理意义明确的致灾环境因子、基于环境因子联接方法来构建模型输入变量、消除环境因子中的随机误差、提升环境因子的适宜性和内在可解释性等研究有利于大幅提升机器学习方法预测滑坡易发性的性能,在未来研究中需要重点关注这些关键问题。展开更多
文摘Teacher_centered classroom teaching makes students to be passivereceiversandunabletouseEnglishasaneffectivetool.ThispaperfocusesonusingdiscussioninEFLclassroomandintroducesthepractisingmethodsofeachstepindetail.ThepaperexpectstofindanewandmoreeffectivepatternthroughanalysisandargumentationtomakestudentsmoreskillfulinusingEnglishanddevelopabetterhabitinclassroomteachingactivities.
基金Project(50808025)supported by the National Natural Science Foundation of ChinaProject(2013GK3012)supported by the Science and Technology Project of Hunan Province,China
文摘A novel method case-based reasoning was proposed for suspicious behavior recognition. The method is composed of three departs: human behavior decomposition, human behavior case representation and case-based reasoning. The new approach was proposed to decompose behavior into sub-behaviors that are easier to recognize using a saliency-based visual attention model. New representation of behavior was introduced, in which the sub-behavior and the associated time characteristic of sub-behavior were used to represent behavior case. In the process of case-based reasoning, apart from considering the similarity of basic sub-behaviors,order factor was proposed to measure the similarity of a time order among the sub-behaviors and span factor was used to measure the similarity of duration time of each sub-behavior, which makes the similarity calculations more rational and comprehensive.Experimental results show the effectiveness of the proposed method in comparison with other related works and can run in real-time for the recognition of suspicious behaviors.
文摘Applying high-speed machining technology in shop floor has many benefits, such as manufacturing more accurate parts with better surface finishes. The selection of the appropriate machining parameters plays a very important role in the implementation of high-speed machining technology. The case-based reasoning is used in the developing of high-speed machining database to overcome the shortage of available high-speed cutting parameters in machining data handbooks and shop floors. The high-speed machining database developed in this paper includes two main components: the machining database and the case-base. The machining database stores the cutting parameters, cutting tool data, work pieces and their materials data, and other relative data, while the case-base stores mainly the successfully solved cases that are problems of work pieces and their machining. The case description and case retrieval methods are described to establish the case-based reasoning high-speed machining database. With the case retrieval method, some succeeded cases similar to the new machining problem can be retrieved from the case-base. The solution of the most matched case is evaluated and modified, and then it is regarded as the proposed solution to the new machining problem. After verification, the problem and its solution are packed up into a new case, and are stored in the case-base for future applications.
文摘"New Normal"is the basic transition modality existing in the Chinese society to the historical development stage and the new normal mode has special pattern of manifestation in political,economic,cultural,social,legal and military fields.Recognizing,adapting to and leading new normal should become the basic content in the work of the party and the country in the coming period.
文摘致灾环境因子是滑坡易发性预测建模的输入变量,是指影响滑坡发生、发展和分布的各种边坡自然属性因子。类型齐全且意义明确的致灾环境因子,对提高滑坡易发性结果的准确性和可靠性至关重要。为了进一步明确致灾环境因子的研究现状和未来展望,本研究在Web of Science的核心合集数据库中进行了文献检索,标题中包含“landslide susceptibility”,出版日期范围从20130101-20231231,收集了767篇滑坡易发性英文论文构成文献数据库。首先统计每篇文献中致灾环境因子数量、获取方法、来源、重要性和认可度等信息,然后详述了致灾环境因子的定义和物理意义;之后对致灾环境因子的优化选取/组合方法、因子联接方法、因子误差及其适宜性等特征进行了讨论,为后续预测滑坡易发性时选取致灾环境因子的不确定性研究提供参考。综述结果表明:(1)文献数据库中共统计出82种致灾环境因子,使用频率较高的因子有40余种,其中坡度、坡向、高程、岩性是使用频率最高的4个因子,坡度、高程、公路密度、岩性、降雨等因子在滑坡易发性预测中的重要性依次增高;(2)发现采用类型齐全且物理意义明确的致灾环境因子、基于环境因子联接方法来构建模型输入变量、消除环境因子中的随机误差、提升环境因子的适宜性和内在可解释性等研究有利于大幅提升机器学习方法预测滑坡易发性的性能,在未来研究中需要重点关注这些关键问题。
