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تعداد نتایج: 42910 فیلتر نتایج به سال:
The combination of chronic obstructive pulmonary disease (COPD) and obstructive sleep apnea (OSA) is associated with substantial morbidity and mortality. We hypothesized that predictors of OSA among patients with COPD may be distinct from OSA in the general population. Therefore, we investigated associations between traditional OSA risk factors (e.g. age), and sleep questionnaires [e.g. Epworth...
INTRODUCTION Obstructive sleep apnoea (OSA) is a growing problem as more and more consequences of the condition become unveiled owing to continued research on the subject. It is essential to establish relevant, fast and accurate screening options, both in the primary sector and for preoperative screening in hospitals if we are to diagnose and treat this condition and thereby avoid the consequen...
The problem of controlling a perturbed open loop system so as to keep its performance errors within bounds is considered. The objective is to maximize the time during which performance errors remain below a prescribed ceiling, while the controlled system’s parameters are within a specified neighborhood of their nominal values. It is shown that there is an optimal open-loop controller that achie...
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