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鲁棒稳定的改进型Smith预估补偿器 被引量:2
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作者 张志秀 《山东轻工业学院学报(自然科学版)》 CAS 2003年第1期62-65,共4页
 如果Smith预估补偿器的预估模型和被控过程的模型不完全匹配,闭环控制系统稳定性不理想。本文采用可变死区范围的非线性方法改进基本的Smith预估补偿器,使得闭环系统关于模型不匹配的稳定鲁棒性令人满意。
关键词 改进型 SMITH预估补偿器 纯滞后 模型不匹配 可变死区 非线性方法 稳定鲁棒性 控制系统
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Determinants of invasive strategy in elderly patients with non-ST elevation myocardial infarction 被引量:1
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作者 Antonin Negers Jacques Boddaert +5 位作者 Lucie Mora Jean-Louis Golmard Laura Moisi Ariel Cohen Jean-Philippe Collet Alice Breining 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2017年第7期465-472,共8页
Background Knowledge gaps across literature prevent current guidelines from providing the profile of elderly patients most likely to derive benefit fi^om invasive strategy (IS) in non ST-elevation myocardial infarct... Background Knowledge gaps across literature prevent current guidelines from providing the profile of elderly patients most likely to derive benefit fi^om invasive strategy (IS) in non ST-elevation myocardial infarction (NSTEMI). Furthermore, the benefit of IS in a real-world elderly population with NSTEMI remains unclear. The aims of this study were to determine factors that lead the cardiologist to opt for an IS in elderly patients with NSTEMI, and to assess the impact of IS on the 6-month all-cause mortality. Methods This multicenter prospective study enrolled all consecutive patients aged 〉 75 years old who presented a NSTEMI and were hospitalized in cardiology intensive care unit between February 2014 and February 2015. Patients were compared on the basis of reperfusion strategy (invasive or conservative) and living status at six months, in order to determine multivariate predictors of the realization of an IS and multivariate predictors of 6-month mor- tality. Results A total of 141 patients were included; 87 (62%) underwent an IS. The strongest independent determinants of IS were younger age [odds ratio (OR): 0.85, 95%-confidence interval (CI): 0.78-0.92; P 〈 0.001) and lower "Cumulative Illness Rating Scale-Geriatric" number of categories score (OR: 0.83, 95%CI: 0.73-0.95; P = 0.002). IS was not significantly associated with 6-month survival (OR: 0.80, 95%CI: 0.27-2.38; P = 0.69). Conclusions In real-world elderly patients with NSTEMI, younger patients with fewer comorbidities profited more often from an IS. However, IS did not modify 6-month all-cause mortality. 展开更多
关键词 COMORBIDITY Coronary angiography Decision making MORTALITY Myocardial infarction
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