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
目的评价“对分课堂”与案例教学联合模式在提升专业型公共卫生硕士(Master of Public Health,MPH)研究生健康干预计划设计能力中的应用效果。方法于2022—2023学年和2023—2024学年春季学期,采用全面调查方法选取北京大学选修健康教育...目的评价“对分课堂”与案例教学联合模式在提升专业型公共卫生硕士(Master of Public Health,MPH)研究生健康干预计划设计能力中的应用效果。方法于2022—2023学年和2023—2024学年春季学期,采用全面调查方法选取北京大学选修健康教育与健康促进课程的所有MPH研究生为研究对象。采用“对分课堂”与案例教学对课程进行改革,采用历史对照单盲试验设计、描述性分析等方法比较MPH研究生健康干预计划设计能力提升效果。结果基于课程分析,本研究提出了加强对健康行为和传播理论价值的思考、健康教育干预计划实践训练以及逻辑实践训练3项改革重点。MPH研究生健康干预计划设计能力提升结果显示,试验组学生的健康干预项目计划书总分为(89.35±3.59)分,高于对照组;评价方案、背景与需求评估、干预策略、行为理论或传播理论维度得分分别为(26.95±0.64)分、(26.90±1.37)分、(26.30±1.60)分、(9.20±0.92)分,均高于对照组。结论“对分课堂”与案例教学联合模式在提升MPH学生健康干预项目设计的整体质量,尤其是评价方案设计方面具有积极作用。因此,可认为该教学模式对于提升MPH研究生健康干预计划设计能力具有一定的积极作用。展开更多
The paper presents the coupling of artificial intelligence-AI and Object-oriented methodology applied for the construction of the model-based decision support system MBDSS.The MBDSS is designed for support the strate...The paper presents the coupling of artificial intelligence-AI and Object-oriented methodology applied for the construction of the model-based decision support system MBDSS.The MBDSS is designed for support the strategic decision making lead to the achievemellt of optimal path towardsmarket economy from the central planning situation in China. To meet user's various requirements,a series of innovations in software development have been carried out, such as system formalization with OBFRAMEs in an object-oriented paradigm for problem solving automation and techniques of modules intelligent cooperation, hybrid system of reasoning, connectionist framework utilization,etc. Integration technology has been highly emphasized and discussed in this article and an outlook to future software engineering is given in the conclusion section.展开更多
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.
文摘目的评价“对分课堂”与案例教学联合模式在提升专业型公共卫生硕士(Master of Public Health,MPH)研究生健康干预计划设计能力中的应用效果。方法于2022—2023学年和2023—2024学年春季学期,采用全面调查方法选取北京大学选修健康教育与健康促进课程的所有MPH研究生为研究对象。采用“对分课堂”与案例教学对课程进行改革,采用历史对照单盲试验设计、描述性分析等方法比较MPH研究生健康干预计划设计能力提升效果。结果基于课程分析,本研究提出了加强对健康行为和传播理论价值的思考、健康教育干预计划实践训练以及逻辑实践训练3项改革重点。MPH研究生健康干预计划设计能力提升结果显示,试验组学生的健康干预项目计划书总分为(89.35±3.59)分,高于对照组;评价方案、背景与需求评估、干预策略、行为理论或传播理论维度得分分别为(26.95±0.64)分、(26.90±1.37)分、(26.30±1.60)分、(9.20±0.92)分,均高于对照组。结论“对分课堂”与案例教学联合模式在提升MPH学生健康干预项目设计的整体质量,尤其是评价方案设计方面具有积极作用。因此,可认为该教学模式对于提升MPH研究生健康干预计划设计能力具有一定的积极作用。
文摘The paper presents the coupling of artificial intelligence-AI and Object-oriented methodology applied for the construction of the model-based decision support system MBDSS.The MBDSS is designed for support the strategic decision making lead to the achievemellt of optimal path towardsmarket economy from the central planning situation in China. To meet user's various requirements,a series of innovations in software development have been carried out, such as system formalization with OBFRAMEs in an object-oriented paradigm for problem solving automation and techniques of modules intelligent cooperation, hybrid system of reasoning, connectionist framework utilization,etc. Integration technology has been highly emphasized and discussed in this article and an outlook to future software engineering is given in the conclusion section.
