目的探讨SEGUE[准备(set the stage,S),信息收集(elicitinformation,E),信息给予(giveinformation,G),理解患者(understandthepatient's/family’sperspective,U),结束问诊(end the encounter,E)]框架情景式案例分析教学法在精神科...目的探讨SEGUE[准备(set the stage,S),信息收集(elicitinformation,E),信息给予(giveinformation,G),理解患者(understandthepatient's/family’sperspective,U),结束问诊(end the encounter,E)]框架情景式案例分析教学法在精神科见习生中的应用效果。方法选取2019年9月—2020年12月在中山大学附属第三医院精神科见习的2016级和2017级5年制临床医学专业医学生为研究对象,共204名,将其随机分为试验组、对照组,各102名。试验组采取SEGUE框架下的情景式案例分析教学法,对照组采取传统的教学方法。2组在课程开始前和见习结束时均采用中文版医患沟通技能评价量表(SEGUE量表)对精神科见习生医患沟通能力进行评分。结果干预前,2组SEGUE量表各维度得分比较,差异无统计学意义(P>0.05)。干预后,2组准备、信息收集、信息给予、理解患者、总分以及人文关怀评分均高于干预前,试验组高于对照组,差异有统计学意义(P<0.001)。结论SEGUE框架下情景式案例分析教学法能很好地提高精神科见习生的医患沟通能力,尤其是共情能力和人文关怀能力,可以作为精神科见习医生的医患沟通教学方法的参考方案。展开更多
In order to improve microstructure distribution and mechanical properties of Mg alloy joint by annealing treatment, die-casting AZ31 Mg alloy was successfully welded at rotation speed of 1 400 rpm and travel speed of ...In order to improve microstructure distribution and mechanical properties of Mg alloy joint by annealing treatment, die-casting AZ31 Mg alloy was successfully welded at rotation speed of 1 400 rpm and travel speed of 200 mm/min. The welded joints were annealed at 150-300 ℃ for 15-120 min and then were subjected to transverse tensile. The microstructure of annealed joints was analyzed by optical microscopy and electron backscatter diffraction. The experimental results indicate that(0001) texture intensity in stir zone significantly reduces and sharp transition of grain size is relieved in the interface between stir zone and thermo-mechanically affected zone after annealed at 200 ℃ for 30 min. Meanwhile, the elongation is increased from 7.5% to 13.0% and strength is increased slightly. It is because that annealing treatment can inhibit twin transformation and retain its ability to coordinate deformation during tensile deformation, which contributes to the improvement of plasticity. In addition, annealing treatment can increase the width of interfacial transition zone and lead to gradual transition of grain size between the SZ and TMAZ, which balances dislocation diffusion rate in different zone.展开更多
针对D-S证据理论在处理冲突证据时可能会造成处理结果与我们的直觉相悖的情况,在已有研究的基础上,运用集合覆盖理论,用几个非冲突子信息系统覆盖原来的带有冲突证据的信息系统,再利用D-S证据理论对每个子信息系统进行合成.最后利用概...针对D-S证据理论在处理冲突证据时可能会造成处理结果与我们的直觉相悖的情况,在已有研究的基础上,运用集合覆盖理论,用几个非冲突子信息系统覆盖原来的带有冲突证据的信息系统,再利用D-S证据理论对每个子信息系统进行合成.最后利用概念支撑的思想定义了每个子系统的权重,合成最终的概率指派函数.所用的基于集合覆盖模型的冲突证据合成(combination of confilicting evidence based on set covering model,CCEM)的方法是对Dempeter定义组合规则的一种扩展.展开更多
多标记学习和选择性集成是机器学习中的两个热点研究问题。本文利用聚类思想探究多标记学习中的选择性集成,提出了两种具体的多标记选择性集成算法:基于最小距离的簇中心选择算法(Minimum distance based cluster center selection,MDC...多标记学习和选择性集成是机器学习中的两个热点研究问题。本文利用聚类思想探究多标记学习中的选择性集成,提出了两种具体的多标记选择性集成算法:基于最小距离的簇中心选择算法(Minimum distance based cluster center selection,MDCCS)和基于K⁃means的簇中心选择算法(K⁃means based cluster center selection,KMCCS)。在所提出的算法中,如何度量学习器之间的距离是其能否成功的关键因素。本文首先基于学习器的分类结果对其进行重新表示,在此基础上给出了学习器之间距离的计算方式。此外,对于算法中的空簇问题给出了两种解决方法。基于Mulan数据库中的多标记数据集和5种评价指标对所提算法进行了详细的分析,实验结果表明了所提算法的有效性。展开更多
文摘目的探讨SEGUE[准备(set the stage,S),信息收集(elicitinformation,E),信息给予(giveinformation,G),理解患者(understandthepatient's/family’sperspective,U),结束问诊(end the encounter,E)]框架情景式案例分析教学法在精神科见习生中的应用效果。方法选取2019年9月—2020年12月在中山大学附属第三医院精神科见习的2016级和2017级5年制临床医学专业医学生为研究对象,共204名,将其随机分为试验组、对照组,各102名。试验组采取SEGUE框架下的情景式案例分析教学法,对照组采取传统的教学方法。2组在课程开始前和见习结束时均采用中文版医患沟通技能评价量表(SEGUE量表)对精神科见习生医患沟通能力进行评分。结果干预前,2组SEGUE量表各维度得分比较,差异无统计学意义(P>0.05)。干预后,2组准备、信息收集、信息给予、理解患者、总分以及人文关怀评分均高于干预前,试验组高于对照组,差异有统计学意义(P<0.001)。结论SEGUE框架下情景式案例分析教学法能很好地提高精神科见习生的医患沟通能力,尤其是共情能力和人文关怀能力,可以作为精神科见习医生的医患沟通教学方法的参考方案。
基金Funded by the Fund for Shanxi Key Subjects Constructionthe National Natural Science Foundation of China(No.51275332)the Natural Science Foundation of Shanxi Province(No.201601D011036)
文摘In order to improve microstructure distribution and mechanical properties of Mg alloy joint by annealing treatment, die-casting AZ31 Mg alloy was successfully welded at rotation speed of 1 400 rpm and travel speed of 200 mm/min. The welded joints were annealed at 150-300 ℃ for 15-120 min and then were subjected to transverse tensile. The microstructure of annealed joints was analyzed by optical microscopy and electron backscatter diffraction. The experimental results indicate that(0001) texture intensity in stir zone significantly reduces and sharp transition of grain size is relieved in the interface between stir zone and thermo-mechanically affected zone after annealed at 200 ℃ for 30 min. Meanwhile, the elongation is increased from 7.5% to 13.0% and strength is increased slightly. It is because that annealing treatment can inhibit twin transformation and retain its ability to coordinate deformation during tensile deformation, which contributes to the improvement of plasticity. In addition, annealing treatment can increase the width of interfacial transition zone and lead to gradual transition of grain size between the SZ and TMAZ, which balances dislocation diffusion rate in different zone.
文摘针对D-S证据理论在处理冲突证据时可能会造成处理结果与我们的直觉相悖的情况,在已有研究的基础上,运用集合覆盖理论,用几个非冲突子信息系统覆盖原来的带有冲突证据的信息系统,再利用D-S证据理论对每个子信息系统进行合成.最后利用概念支撑的思想定义了每个子系统的权重,合成最终的概率指派函数.所用的基于集合覆盖模型的冲突证据合成(combination of confilicting evidence based on set covering model,CCEM)的方法是对Dempeter定义组合规则的一种扩展.
文摘多标记学习和选择性集成是机器学习中的两个热点研究问题。本文利用聚类思想探究多标记学习中的选择性集成,提出了两种具体的多标记选择性集成算法:基于最小距离的簇中心选择算法(Minimum distance based cluster center selection,MDCCS)和基于K⁃means的簇中心选择算法(K⁃means based cluster center selection,KMCCS)。在所提出的算法中,如何度量学习器之间的距离是其能否成功的关键因素。本文首先基于学习器的分类结果对其进行重新表示,在此基础上给出了学习器之间距离的计算方式。此外,对于算法中的空簇问题给出了两种解决方法。基于Mulan数据库中的多标记数据集和5种评价指标对所提算法进行了详细的分析,实验结果表明了所提算法的有效性。
