A new method using discriminant analysis and control charts is proposed for monitoring multivariate process operations more reliably.Fisher discriminant analysis （FDA） is used to derive a feature discriminant direct...A new method using discriminant analysis and control charts is proposed for monitoring multivariate process operations more reliably.Fisher discriminant analysis （FDA） is used to derive a feature discriminant direction （FDD） between each normal and fault operations,and each FDD thus decided constructs the feature space of each fault operation.Individuals control charts （XmR charts） are used to monitor multivariate processes using the process data projected onto feature spaces.Upper control limit （UCL） and lower control limit （LCL） on each feature space from normal process operation are calculated for XmR charts,and are used to distinguish fault from normal.A variation trend on an XmR chart reveals the type of relevant fault operation.Applications to Tennessee Eastman simulation processes show that this proposed method can result in better monitoring performance than principal component analysis （PCA）-based methods and can better identify step type faults on XmR charts.展开更多
目的探讨动态血糖监测指导个体化营养与运动联合治疗妊娠期糖尿病的效果,为妊娠期糖尿病的疗效提供评价系统。方法选取我院收治的96例妊娠期糖尿病孕妇,根据随机数字表法将孕妇平均分为观察组和对照组,每组48例。对照组孕妇给予常规妊...目的探讨动态血糖监测指导个体化营养与运动联合治疗妊娠期糖尿病的效果,为妊娠期糖尿病的疗效提供评价系统。方法选取我院收治的96例妊娠期糖尿病孕妇,根据随机数字表法将孕妇平均分为观察组和对照组,每组48例。对照组孕妇给予常规妊娠糖尿病营养指导和适量运动,观察组孕妇根据血糖水平给予个体化营养与运动的联合治疗,比较2组孕妇治疗前、后血糖和血脂水平,并观察孕妇和新生儿出生体质量和妊娠结局。结果治疗前2组妊娠期糖尿病孕妇生化指标、空腹血糖(FBG)、餐后2 h血糖(2 h PBG)、糖化血红蛋白(HbA1C)、三酰甘油(TG)和总胆固醇(TC)比较差异无统计学差异(P>0.05)。经联合治疗后观察组妊娠期糖尿病孕妇生化指标(FBG、2 hPBG、HbA1C、TG和TC)显著低于治疗后对照组,差异存在统计学意义(P<0.05)。联合治疗后观察组妊娠期糖尿病孕妇孕期总增重、每周增重、孕期体质量指数(BMI)增加和每周BMI增加以及新生儿出生体质量均明显低于治疗后对照组,同时观察组孕妇子痫前期、早产、羊水过多、巨大儿、剖宫产和产后出血比例均明显低于对照组,差异存在统计学意义(P<0.05)。结论动态血糖监测指导的个体化营养与运动的联合治疗能够降低妊娠期糖尿病孕妇血糖、血脂水平,改善孕妇和胎儿体质量,降低不良妊娠结局的产生,为妊娠糖尿病的综合治疗提供参考。展开更多
基金Sponsored by the Scientific Research Foundation for Returned Overseas Chinese Scholars of the Ministry of Education of China
文摘A new method using discriminant analysis and control charts is proposed for monitoring multivariate process operations more reliably.Fisher discriminant analysis （FDA） is used to derive a feature discriminant direction （FDD） between each normal and fault operations,and each FDD thus decided constructs the feature space of each fault operation.Individuals control charts （XmR charts） are used to monitor multivariate processes using the process data projected onto feature spaces.Upper control limit （UCL） and lower control limit （LCL） on each feature space from normal process operation are calculated for XmR charts,and are used to distinguish fault from normal.A variation trend on an XmR chart reveals the type of relevant fault operation.Applications to Tennessee Eastman simulation processes show that this proposed method can result in better monitoring performance than principal component analysis （PCA）-based methods and can better identify step type faults on XmR charts.
文摘目的探讨动态血糖监测指导个体化营养与运动联合治疗妊娠期糖尿病的效果,为妊娠期糖尿病的疗效提供评价系统。方法选取我院收治的96例妊娠期糖尿病孕妇,根据随机数字表法将孕妇平均分为观察组和对照组,每组48例。对照组孕妇给予常规妊娠糖尿病营养指导和适量运动,观察组孕妇根据血糖水平给予个体化营养与运动的联合治疗,比较2组孕妇治疗前、后血糖和血脂水平,并观察孕妇和新生儿出生体质量和妊娠结局。结果治疗前2组妊娠期糖尿病孕妇生化指标、空腹血糖(FBG)、餐后2 h血糖(2 h PBG)、糖化血红蛋白(HbA1C)、三酰甘油(TG)和总胆固醇(TC)比较差异无统计学差异(P>0.05)。经联合治疗后观察组妊娠期糖尿病孕妇生化指标(FBG、2 hPBG、HbA1C、TG和TC)显著低于治疗后对照组,差异存在统计学意义(P<0.05)。联合治疗后观察组妊娠期糖尿病孕妇孕期总增重、每周增重、孕期体质量指数(BMI)增加和每周BMI增加以及新生儿出生体质量均明显低于治疗后对照组,同时观察组孕妇子痫前期、早产、羊水过多、巨大儿、剖宫产和产后出血比例均明显低于对照组,差异存在统计学意义(P<0.05)。结论动态血糖监测指导的个体化营养与运动的联合治疗能够降低妊娠期糖尿病孕妇血糖、血脂水平,改善孕妇和胎儿体质量,降低不良妊娠结局的产生,为妊娠糖尿病的综合治疗提供参考。
