目的对2001—2024年PBL教学法在中医教学领域的研究热点及发展趋势进行可视化分析,为PBL教学法的发展和研究提供参考。方法运用Cite Space 6.2.R6和VOSviewer软件,分别对2001年1月至2024年4月CNKI数据库中收录的文献进行年度发文量、关...目的对2001—2024年PBL教学法在中医教学领域的研究热点及发展趋势进行可视化分析,为PBL教学法的发展和研究提供参考。方法运用Cite Space 6.2.R6和VOSviewer软件,分别对2001年1月至2024年4月CNKI数据库中收录的文献进行年度发文量、关键词、杂志发文量、关键词共现、聚类分析等可视化分析。结果通过检索和筛选纳入的820篇中文文献,2008年起发文量显著增加,至2020年发文量达到顶峰(68篇),关键词有491个,聚类标签有9个,突变词“临床带教”权重最高,研究核心力量为中医药院校及其附属教学医院。结论PBL教学法目前已广泛应用于中医基础课程、中医临床课程和中医经典课程,是临床教学和中医住院医师规范化培训中常用的教学方法,联合PBL教学法的混合式教学是目前更为推荐的一种教学模式。展开更多
Symbolic analysis has many applications in the design of analog circuits. Existing approaches rely on two forms of symbolic-expression representation: expanded sum-of-product form and arbitrarily nested form. Expanded...Symbolic analysis has many applications in the design of analog circuits. Existing approaches rely on two forms of symbolic-expression representation: expanded sum-of-product form and arbitrarily nested form. Expanded form suffers the problem that the number of product terms grows exponentially with the size of a circuit. Nested form is neither canonical nor amenable to symbolic manipulation. In this paper, we present a new approach to exact and canonical symbolic analysis by exploiting the sparsity and sharing of product terms. This algorithm, called totally coded method (TCM), consists of representing the symbolic determinant of a circuit matrix by code series and performing symbolic analysis by code manipulation. We describe an efficient code-ordering heuristic and prove that it is optimum for ladder-structured circuits. For practical analog circuits, TCM not only covers all advantages of the algorithm via determinant decision diagrams (DDD) but is more simple and efficient than DDD method.展开更多
文摘目的对2001—2024年PBL教学法在中医教学领域的研究热点及发展趋势进行可视化分析,为PBL教学法的发展和研究提供参考。方法运用Cite Space 6.2.R6和VOSviewer软件,分别对2001年1月至2024年4月CNKI数据库中收录的文献进行年度发文量、关键词、杂志发文量、关键词共现、聚类分析等可视化分析。结果通过检索和筛选纳入的820篇中文文献,2008年起发文量显著增加,至2020年发文量达到顶峰(68篇),关键词有491个,聚类标签有9个,突变词“临床带教”权重最高,研究核心力量为中医药院校及其附属教学医院。结论PBL教学法目前已广泛应用于中医基础课程、中医临床课程和中医经典课程,是临床教学和中医住院医师规范化培训中常用的教学方法,联合PBL教学法的混合式教学是目前更为推荐的一种教学模式。
文摘Symbolic analysis has many applications in the design of analog circuits. Existing approaches rely on two forms of symbolic-expression representation: expanded sum-of-product form and arbitrarily nested form. Expanded form suffers the problem that the number of product terms grows exponentially with the size of a circuit. Nested form is neither canonical nor amenable to symbolic manipulation. In this paper, we present a new approach to exact and canonical symbolic analysis by exploiting the sparsity and sharing of product terms. This algorithm, called totally coded method (TCM), consists of representing the symbolic determinant of a circuit matrix by code series and performing symbolic analysis by code manipulation. We describe an efficient code-ordering heuristic and prove that it is optimum for ladder-structured circuits. For practical analog circuits, TCM not only covers all advantages of the algorithm via determinant decision diagrams (DDD) but is more simple and efficient than DDD method.
