نتایج جستجو برای: time dependent availability

تعداد نتایج: 2547064  

Journal: :iranian journal of public health 0
nurliyana juhan 1. institute of mathematical sciences, university of malaya, 50603 kuala lumpur , malaysia. nuradhiathy abd razak 2. institute of graduate studies, university of malaya, 50603 kuala lumpur , malaysia. yong zulina zubairi 3. centre for foundation studies in science, university of malaya, 50603 kuala lumpur , malaysia. muhammad naeem khattak 4. alberta health services, health protection communicable disease control , alberta, canada. nyi nyi naing 5. unit of biostatistics and research methodology, school of medical sciences, health campus, universitisains malaysia , kelantan, malaysia.

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...

2011
Meesala Srinivasa Rao

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ریاضی و کامپیوتر 1386

چکیده ندارد.

Journal: :journal of research in health sciences 0
ghodratollah roshanaei anoshirvan kazemnejad sanambar sadighi

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...

Journal: :international journal of advanced design and manufacturing technology 0
mohammad mohammadiun islamic azad university, shahrood, iran

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...

Journal: :Circulation research 1990
D J Snyders L M Hondeghem

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...

2005
Dirk J. Snyders Luc M. Hondeghem

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...

ژورنال: علوم آب و خاک 2017

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 &micro;gg-1) and five organic substances (blank, poultry manure and derived biochars at 200, 300 and 400&deg;C). organic substances were incorporated with 400 g of soi...

Journal: :European Journal of Operational Research 2022

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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