نتایج جستجو برای: time dependent availability
تعداد نتایج: 2547064 فیلتر نتایج به سال:
cervical cancer is the third most common cancer among women in malaysia. the objective of this study was to estimate the effect of explanatory variables on survival time of cervical cancer patients receiving treatment at a hospital in malaysia.in this retrospective record review study, cervical cancer data obtained from hospital universitisains malaysia (husm) was analysed. the data comprises o...
Time dependent availability is an important index used for evaluation of operational performance of repairable industrial systems. Traditionally, Markov analysis procedures are carried out for such studies. This becomes mathematically intensive when applied for larger systems. Moreover, this method does not indicate at what time a system reaches its steady state. However, in practice it is impo...
چکیده ندارد.
background: in survival studies when the event times are dependent, performing of the analysis by using of methods based on independent assumption, leads to biased. in this paper, using copula function and considering the dependence structure between the event times, a parametric joint distribution has made fitting to the events, and the effective factors on each of these events would be determ...
in this paper, the conjugate gradient method coupled with adjoint problem is used in order to solve the inverse heat conduction problem and estimation of the time- dependent heat flux using the temperature distribution at a point in a three layer system with none homogeneous boundary conditions. also, the effect of noisy data on final solution is studied. for solving this problem the general co...
In guinea pig cardiac myocytes quinidine (20 microM) caused less than 10% tonic block reduction of the sodium current at -120 mV, but a fast pulse train reduced it more than 90%. Recovery from use-dependent block was time and voltage dependent, and was always slow (tau = 34 +/- 10 seconds at -160 mV; tau = 90 +/- 35 seconds at -120 mV; n = 15, mean +/- SD, p less than 0.001, paired t test). How...
In guinea pig cardiac myocytes quinidine (20 ,uM) caused <10% tonic block reduction of the sodium current at -120 mV, but a fast pulse train reduced it more than 90%. Recovery from use-dependent block was time and voltage dependent, and was always slow (-r=34+10 seconds at -160 mV; r=90-'-35 seconds at -120 mV; n=15, mean+SD, p<0.001, paired t test). However, in association with repeated activa...
This study was conducted to investigate the effects of poultry manure (PM) and derived biochars on phosphorous (P) availability and apparent recovery in a calcareous soil. Treatments consisted of four rates of P (0, 30, 60 and 90 µgg-1) and five organic substances (blank, poultry manure and derived biochars at 200, 300 and 400°C). organic substances were incorporated with 400 g of soi...
In this paper we study the problem of scheduling a given sequence activities where each activity consumes resource with limited availability. Activity durations as well consumptions are assumed to be time-dependent. Because interaction time-dependent and consumptions, policies based on starting in early possible may fail due unnecessarily high exceeding availability resource. We propose dynamic...
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