نتایج جستجو برای: stochastic repair time
تعداد نتایج: 2100823 فیلتر نتایج به سال:
Pricing storage operation in the real-time market under demand and generation stochasticities is considered. A scenario-based stochastic rolling-window dispatch model formulated for market, consisting of conventional generators, utility-scale storage, distributed energy resource aggregators. We show that uniform pricing mechanisms require discriminative out-of-the-market uplifts, making settlem...
The time evolution of quantum fields is shown to be equivalent a time-symmetric Fokker-Planck equation. Results are obtained using Q-function representation, including fermion-fermion, boson-boson, and fermion-boson interactions with linear, quadratic, cubic, quartic Hamiltonians, typical QED many other cases. For local boson-boson coupling, the resulting probability distribution proved have po...
Parametric cost analysis uses equations to map measurable system attributes into cost. The measures of the system attributes are called metrics. The equations are called cost estimating relationships (CER's), and are obtained by the analysis of cost and technical metric data of products analogous to those to be estimated. Examples of system metrics include mass, power, failure_rate, mean_time_t...
background: exposure to ionizing radiation is known to induce oxidative stress followed by damage to critical biomolecules like lipids, proteins and dna through radiolysis of cellular water. since radiation has been widely used as an important tool in therapy of cancer, the detailed investigation regarding the dna damage and repair kinetics would help to predict the radiation sensitivity of cel...
Abstract Background: Renal insufficiency is a potential complication after infrarenal abdominal aortic aneurysm repair and is a significant risk factor for postoperative mortality and morbidity. The aim of this study was to analyze the effect of this risk factor, before and during operation. Methods: In this prospective study, between 2003 and 2006, 45 patients underwent repair of an infrarena...
In this paper we study the moment generating function order and the new better than used in the moment generating function order (NBUmg) life distributions. A closure property of this order under an independent random sum is deduced, and stochastic comparisons among the block replacement policy, the age replacement policy, the complete repair policy, and the minimal repair policy of an NBUmg co...
Different ossificant materials have been used for induction of bone repair in many studies, and bone matrix gelatin which contains bone morphogenic proteins is one of the best ones. In present study we evaluated the role of this material in acceleration of bone repair in rabbit tibia. A hole of 3.5 mm diameter was made on right tibia of 10 and 12 rabbits as study and control group respectively....
ON OPTIMAL POLICIES FOR MULTI·REPAIR·TYPE MARKOV MAINTENANCE MODELS Yukio Hatoyama Tokyo Institute of Technology (Received April 6, 1978) This paper treats an extension of an optimal machine maintenance model with Markovian deterioration introduced by Derman. The system consists of an operating machine whose deterioration is Markovian, a finite number of identical spare machines, and several ty...
DNA within cells is subject to damage from various sources. Organisms have evolved a number of mechanisms to repair DNA damage. The activity of repair enzymes carries its own risk, however, because the repair of two nearby lesions may lead to the breakup of DNA and result in cell death. We propose a mathematical theory of the damage and repair process in the important scenario where lesions are...
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