Fuzzy sets theory cannot describe the neutrality degreeof data, which has largely limited the objectivity of fuzzy time seriesin uncertain data forecasting. With this regard, a multi-factor highorderintuitionistic fuz...Fuzzy sets theory cannot describe the neutrality degreeof data, which has largely limited the objectivity of fuzzy time seriesin uncertain data forecasting. With this regard, a multi-factor highorderintuitionistic fuzzy time series forecasting model is built. Inthe new model, a fuzzy clustering algorithm is used to get unequalintervals, and a more objective technique for ascertaining membershipand non-membership functions of the intuitionistic fuzzy setis proposed. On these bases, forecast rules based on multidimensionalintuitionistic fuzzy modus ponens inference are established.Finally, contrast experiments on the daily mean temperature ofBeijing are carried out, which show that the novel model has aclear advantage of improving the forecast accuracy.展开更多
目的:探讨认知储备与创伤性脑损伤病人认知障碍发生风险的关系。方法:于2023年9月—2024年8月20日,采用便利抽样法选取重庆市3所三级甲等医院神经外科或急诊医学科住院治疗的创伤性脑损伤病人进行横断面调查研究。通过住院病历或床旁评...目的:探讨认知储备与创伤性脑损伤病人认知障碍发生风险的关系。方法:于2023年9月—2024年8月20日,采用便利抽样法选取重庆市3所三级甲等医院神经外科或急诊医学科住院治疗的创伤性脑损伤病人进行横断面调查研究。通过住院病历或床旁评估获得一般资料,采用认知储备指数问卷和蒙特利尔认知评估量表评估认知储备水平和认知功能。采用柱状图可视化不同认知储备水平下认知障碍发生率;采用限制性立方样条(RCS)模型分析认知储备与创伤性脑损伤认知障碍发生风险的关系;采用Logistic回归模型分析认知储备对创伤性脑损伤病人认知障碍的预测作用。结果:共调查408例创伤性脑损伤病人,年龄18~87岁,认知储备指数问卷得分为91(88,94)分,蒙特利尔认知评估量表得分为22(16,28)分,246例(60.3%)发生认知障碍;限制性立方样条结果显示,总人群及性别分层下认知储备与认知障碍发生风险均呈负向线性剂量-反应关系(P for overall<0.05,P for nonlinear>0.05);Logistic回归分析及趋势性检验结果显示,调整混杂因素后,总人群及性别分层下认知障碍发生风险随认知储备水平的增加而降低。结论:认知储备可作为创伤性脑损伤病人认知障碍发生的重要预测因子,提高认知储备水平有望成为其早期认知干预的潜在策略之一。展开更多
基金supported by the National Natural Science Foundation of China(61309022)
文摘Fuzzy sets theory cannot describe the neutrality degreeof data, which has largely limited the objectivity of fuzzy time seriesin uncertain data forecasting. With this regard, a multi-factor highorderintuitionistic fuzzy time series forecasting model is built. Inthe new model, a fuzzy clustering algorithm is used to get unequalintervals, and a more objective technique for ascertaining membershipand non-membership functions of the intuitionistic fuzzy setis proposed. On these bases, forecast rules based on multidimensionalintuitionistic fuzzy modus ponens inference are established.Finally, contrast experiments on the daily mean temperature ofBeijing are carried out, which show that the novel model has aclear advantage of improving the forecast accuracy.
文摘目的:探讨认知储备与创伤性脑损伤病人认知障碍发生风险的关系。方法:于2023年9月—2024年8月20日,采用便利抽样法选取重庆市3所三级甲等医院神经外科或急诊医学科住院治疗的创伤性脑损伤病人进行横断面调查研究。通过住院病历或床旁评估获得一般资料,采用认知储备指数问卷和蒙特利尔认知评估量表评估认知储备水平和认知功能。采用柱状图可视化不同认知储备水平下认知障碍发生率;采用限制性立方样条(RCS)模型分析认知储备与创伤性脑损伤认知障碍发生风险的关系;采用Logistic回归模型分析认知储备对创伤性脑损伤病人认知障碍的预测作用。结果:共调查408例创伤性脑损伤病人,年龄18~87岁,认知储备指数问卷得分为91(88,94)分,蒙特利尔认知评估量表得分为22(16,28)分,246例(60.3%)发生认知障碍;限制性立方样条结果显示,总人群及性别分层下认知储备与认知障碍发生风险均呈负向线性剂量-反应关系(P for overall<0.05,P for nonlinear>0.05);Logistic回归分析及趋势性检验结果显示,调整混杂因素后,总人群及性别分层下认知障碍发生风险随认知储备水平的增加而降低。结论:认知储备可作为创伤性脑损伤病人认知障碍发生的重要预测因子,提高认知储备水平有望成为其早期认知干预的潜在策略之一。
