نتایج جستجو برای: dess sequence
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In this paper, rstly, potential synthesis cases in distributed expert systems (DESs) and types of DESs are identiied. Based on these results, necessary conditions of synthesis strategies in diierent synthesis cases are recognized. Secondly, two methodologies for designing synthesis strategies in distributed expert systems are investigated. They are analysis methods, and inductive methods. Third...
A number of preclinical and clinical studies are focused on mechanisms of SSRI discontinuation syndrome as well as the patient populations and agents that are most affected by this phenomenon. Characteristics of onset, duration, and severity of any discontinuation symptoms and spontaneous reports of taper/poststudy-emergent adverse events should be compared with those of the active comparator i...
Diabetes, as we are becoming keenly aware, is growing to epidemic proportions, and it is incumbent on cardiologists to consider the ‘comparative effectiveness’ of our treatments for its cardiovascular complications. The incidence of death or myocardial infarction (MI) has been found to be five times higher in patients with diabetes compared with those without. In 2001, the National Cholesterol ...
Dioid algebra associated with Petri Nets are appropriate tools for modeling, analyzing, and evaluating the performance of Discrete Event Systems (DESs). These tools are restricted to model systems characterized by choice phenomena and conflicts. In this paper a routing policy to arbitrate and resolve the conflicts encountered while modeling DESs by dioid algebra, is proposed. This routing polic...
In this paper we introduce and study the notion of safety control of stochastic discrete event systems (DESs), modeled as controlled Markov chains. For non-stochastic DESs, modeled by state machines or automata, safety is specified as a set of forbidden states, or equivalently by a binary valued vector that imposes an upper bound on the set of states permitted to be visited. We generalize this ...
The electrochemical behaviour of ferrocene (Fc) is investigated in six different deep eutectic solvents (DESs) formed by means of hydrogen bonding between selected ammonium and phosphonium salts with glycerol and ethylene glycol. Combinations of cyclic voltammetry and chronoamperometry are employed to characterise the DESs. The reductive and oxidative potential limits are reported versus the Fc...
Despite the remarkable benefits obtained following the introduction of the first-generation drug-eluting stent (DES), concerns were raised over its long-term safety, particularly with regard to very late (beyond 1 year) stent thrombosis. Newer-generation DESs have been developed to overcome this limitation using novel stent platforms, new drugs, more biocompatible durable polymers, and bioabsor...
Detectability of discrete event systems (DESs) is a property to determine a priori whether the current and subsequent states can be determined based on observations. In this paper, we investigate the verification of two detectability properties – strong detectability and weak detectability – for DESs modeled by labeled Petri nets. Strong detectability requires that we can always determine, afte...
BACKGROUND Whether low-molecular-weight heparin (LMWH) is superior to unfractionated heparin (UFH) in acute ST-segment elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (PCI) with drug-eluting stents (DESs) remains unclear. METHODS A total of 3,372 STEMI patients who underwent primary PCI with DESs received either LMWH (n = 1,531 patients, ...
Percutaneous coronary intervention (PCI) has become the most common revascularization procedure for coronary artery disease. The use of stents has reduced the rate of restenosis by preventing elastic recoil and negative remodeling. However, in-stent restenosis remains one of the major drawbacks of this procedure. Drug-eluting stents (DESs) have proven to be effective in reducing the risk of lat...
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