With the widespread use of high-power and highly integrated insulated gate bipolar transistor(IGBT),their cooling methods have become challenging.This paper proposes a liquid cooling scheme for heavy-duty automated gu...With the widespread use of high-power and highly integrated insulated gate bipolar transistor(IGBT),their cooling methods have become challenging.This paper proposes a liquid cooling scheme for heavy-duty automated guided vehicle(AGV)motor driver in port environment,and improves heat dissipation by analyzing and optimizing the core component of finned heat sink.Firstly,the temperature distribution of the initial scheme is studied by using Fluent software,and the heat transfer characteristics of the finned heat sink are obtained through numerical analysis.Secondly,an orthogonal test is designed and combined with the response surface methodology to optimize the structural parameters of the finned heat sink,resulting in a 14.57%increase in the heat dissipation effect.Finally,the effectiveness of heat dissipation enhancement is verified.This work provides valuable insights into improving the heat dissipation of IGBT modules and heat sinks,and provides guidance for their future applications.展开更多
目的探讨在深化医疗制度改革背景下,实施按疾病诊断相关分组(diagnosis related groups,DRG)付费制度对医院医保管理效率的影响。方法收集武汉市协和江北医院暨蔡甸区人民医院医保统计报表数据,对医院实施DRG支付制度管理进行具体的调研...目的探讨在深化医疗制度改革背景下,实施按疾病诊断相关分组(diagnosis related groups,DRG)付费制度对医院医保管理效率的影响。方法收集武汉市协和江北医院暨蔡甸区人民医院医保统计报表数据,对医院实施DRG支付制度管理进行具体的调研,分析DRG支付制度带来的医保管理成效及对医院服务能力的影响。结果至2022年,该院DRG支付制度改革获得成效,DRG控制情况较好,医保年度结余385.62万元,实现年度持续同比增长,职工DRG绩效收入占比整体上呈逐年升高的趋势,从41.24%增长至51.50%,预约诊疗率逐年增长,预约后平均等待时间缩短,年度门诊患者、住院患者及医务人员调查满意度基本呈上升趋势。结论医院实施DRG支付制度后医保管理改革取得了较好成效,对医院的医疗服务管理能力产生了一定的影响。展开更多
基金Supported by the National Key Research and Development Plan Program(No.2022YFB4701101)National Natural Science Foundation of Chi-na(No.U1913211)Natural Science Foundation of Hebei Province of China(No.F2021202062)。
文摘With the widespread use of high-power and highly integrated insulated gate bipolar transistor(IGBT),their cooling methods have become challenging.This paper proposes a liquid cooling scheme for heavy-duty automated guided vehicle(AGV)motor driver in port environment,and improves heat dissipation by analyzing and optimizing the core component of finned heat sink.Firstly,the temperature distribution of the initial scheme is studied by using Fluent software,and the heat transfer characteristics of the finned heat sink are obtained through numerical analysis.Secondly,an orthogonal test is designed and combined with the response surface methodology to optimize the structural parameters of the finned heat sink,resulting in a 14.57%increase in the heat dissipation effect.Finally,the effectiveness of heat dissipation enhancement is verified.This work provides valuable insights into improving the heat dissipation of IGBT modules and heat sinks,and provides guidance for their future applications.
文摘目的探讨在深化医疗制度改革背景下,实施按疾病诊断相关分组(diagnosis related groups,DRG)付费制度对医院医保管理效率的影响。方法收集武汉市协和江北医院暨蔡甸区人民医院医保统计报表数据,对医院实施DRG支付制度管理进行具体的调研,分析DRG支付制度带来的医保管理成效及对医院服务能力的影响。结果至2022年,该院DRG支付制度改革获得成效,DRG控制情况较好,医保年度结余385.62万元,实现年度持续同比增长,职工DRG绩效收入占比整体上呈逐年升高的趋势,从41.24%增长至51.50%,预约诊疗率逐年增长,预约后平均等待时间缩短,年度门诊患者、住院患者及医务人员调查满意度基本呈上升趋势。结论医院实施DRG支付制度后医保管理改革取得了较好成效,对医院的医疗服务管理能力产生了一定的影响。
