The original temporal clustering analysis (OTCA) is an effective technique for obtaining brain activation maps when the timing and location of the activation are completely unknown, but its deficiency of sensitivity i...The original temporal clustering analysis (OTCA) is an effective technique for obtaining brain activation maps when the timing and location of the activation are completely unknown, but its deficiency of sensitivity is exposed in processing brain activation signal which is relatively weak. The time slice analysis method based on OTCA is proposed considering the weakness of the functional magnetic resonance imaging (fMRI) signal of the rat model. By dividing the stimulation period into several time slices and analyzing each slice to detect the activated pixels respectively after the background removal, the sensitivity is significantly improved. The inhibitory response in the hypothalamus after glucose loading is detected successfully with this method in the experiment on rat. Combined with the OTCA method, the time slice analysis method based on OTCA is effective on detecting when, where and which type of response will happen after stimulation, even if the fMRI signal is weak.展开更多
A clustering algorithm and a probability statistics method were applied to different phases of a flight to analyze operation time during aircraft ground taxiing and airborne flight.And the clustering pattern,distribut...A clustering algorithm and a probability statistics method were applied to different phases of a flight to analyze operation time during aircraft ground taxiing and airborne flight.And the clustering pattern,distribution characteristics and dynamically changing rules of the two phases were identified.Further,an estimate method was established to measure operation time of flight legs,with creative steps of calculating individual segment separately and then integrating them accordingly.The method can both objectively and dynamically measure operation time,and accurately reflect real situation.It helps to better utilize airport slot resources and provides a strong support for air traffic flow management when scheduling flight plan in strategic and pre-tactic phases.展开更多
目的研究两种DRG绩效管理模式对神经内科和神经外科运营的影响。方法收集来宾市某三甲医院2022年1月—2024年4月的DRG出院病例数据,运用中断时间序列(interrupted time series,ITS)分析两种DRG绩效管理模式对神经内科和神经外科的财务...目的研究两种DRG绩效管理模式对神经内科和神经外科运营的影响。方法收集来宾市某三甲医院2022年1月—2024年4月的DRG出院病例数据,运用中断时间序列(interrupted time series,ITS)分析两种DRG绩效管理模式对神经内科和神经外科的财务绩效、服务能力、服务效率、患者负担和盈亏情况的影响。此外,采用热力聚类分析比较两种DRG绩效管理前后病种结余率的变化,并通过非参数检验分析转科对住院费的影响。结果神经内科的运营效能的ITS斜率变化量系数显著,而神经外科则不显著。两个科室的病种结余率的变化率可分为5类,权重相近的病种变化相似。此外,部分病种转科后的住院费显著提高(P<0.05)。结论不同DRG绩效管理模式对同一科室的影响显著不同,同一DRG绩效管理模式对不同科室的影响也存在显著差异,且转科是影响住院费的重要因素。展开更多
基金the National Natural Science Foundation of China (30370432)
文摘The original temporal clustering analysis (OTCA) is an effective technique for obtaining brain activation maps when the timing and location of the activation are completely unknown, but its deficiency of sensitivity is exposed in processing brain activation signal which is relatively weak. The time slice analysis method based on OTCA is proposed considering the weakness of the functional magnetic resonance imaging (fMRI) signal of the rat model. By dividing the stimulation period into several time slices and analyzing each slice to detect the activated pixels respectively after the background removal, the sensitivity is significantly improved. The inhibitory response in the hypothalamus after glucose loading is detected successfully with this method in the experiment on rat. Combined with the OTCA method, the time slice analysis method based on OTCA is effective on detecting when, where and which type of response will happen after stimulation, even if the fMRI signal is weak.
基金supported by the National Natural Science Foundation of China(No.U1333202)
文摘A clustering algorithm and a probability statistics method were applied to different phases of a flight to analyze operation time during aircraft ground taxiing and airborne flight.And the clustering pattern,distribution characteristics and dynamically changing rules of the two phases were identified.Further,an estimate method was established to measure operation time of flight legs,with creative steps of calculating individual segment separately and then integrating them accordingly.The method can both objectively and dynamically measure operation time,and accurately reflect real situation.It helps to better utilize airport slot resources and provides a strong support for air traffic flow management when scheduling flight plan in strategic and pre-tactic phases.
文摘目的研究两种DRG绩效管理模式对神经内科和神经外科运营的影响。方法收集来宾市某三甲医院2022年1月—2024年4月的DRG出院病例数据,运用中断时间序列(interrupted time series,ITS)分析两种DRG绩效管理模式对神经内科和神经外科的财务绩效、服务能力、服务效率、患者负担和盈亏情况的影响。此外,采用热力聚类分析比较两种DRG绩效管理前后病种结余率的变化,并通过非参数检验分析转科对住院费的影响。结果神经内科的运营效能的ITS斜率变化量系数显著,而神经外科则不显著。两个科室的病种结余率的变化率可分为5类,权重相近的病种变化相似。此外,部分病种转科后的住院费显著提高(P<0.05)。结论不同DRG绩效管理模式对同一科室的影响显著不同,同一DRG绩效管理模式对不同科室的影响也存在显著差异,且转科是影响住院费的重要因素。
