نتایج جستجو برای: hybrid hazard rate function

تعداد نتایج: 2268838  

2012
Dominique Bontemps Stéphane Boucheron Elisabeth Gassiat

This paper sheds light on universal coding with respect to classes of memoryless sources over a countable alphabet defined by an envelope function with finite and non-decreasing hazard rate. We prove that the auto-censuring (AC) code introduced by Bontemps (2011) is adaptive with respect to the collection of such classes. The analysis builds on the tight characterization of universal redundancy...

Journal: :international journal of mathematical modelling and computations 0
y. ordokhani department of applied mathematics, faculty of mathematical sciences, alzahra university, tehran, iran. n. rahimi department of applied mathematics, faculty of mathematical sciences, alzahra university, tehran, iran.

abstract. in this paper, we implement numerical solution of differential equations of frac- tional order based on hybrid functions consisting of block-pulse function and rationalized haar functions. for this purpose, the properties of hybrid of rationalized haar functions are presented. in addition, the operational matrix of the fractional integration is obtained and is utilized to convert compu...

This paper introduces a model to make decision on the maintenance of a mechanical component subject to condition monitoring. A stochastic model is used to determine what maintenance action should be taken at a monitoring check and the follow up inspection times. The condition of component has a stochastic relation with measurements. A new state space model is developed and used, to predict the ...

Journal: :journal of biostatistics and epidemiology 0
mahmood sheikh-fathollahi department of social medicine and occupational environment research center, medical school, rafsanjan university of medical sciences, rafsanjan, iran mahmood mahmoodi department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran kazem mohammad department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran hojjat zeraati department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran arash jalali department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran

b a c k g r o u n d & aim: the excess hazard rate proposed by andersen and vaeth may underestimate the long-term excess hazard rate for cancer survival. zahl explained the phenomenon by continuous selection of the most robust individuals after diagnosis. he applied correlated inverse gaussian and gamma  frailty  models  to estimate  excess  intensity  and reached  a better  estimate  of the rat...

Journal: :The New England journal of medicine 2010
Guillaume Paré Shamir R Mehta Salim Yusuf Sonia S Anand Stuart J Connolly Jack Hirsh Katy Simonsen Deepak L Bhatt Keith A A Fox John W Eikelboom

BACKGROUND It has been suggested that clopidogrel may be less effective in reducing the rate of cardiovascular events among persons who are carriers of loss-of-function CYP2C19 alleles that are associated with reduced conversion of clopidogrel to its active metabolite. METHODS We genotyped patients from two large, randomized trials that showed that clopidogrel, as compared with placebo, reduc...

Several characterizations of Marshall-Olkin generalized distributions, introduced by Gui (2013) and by Al-Saiari et al. (2014) are presented. These characterizations are based on: (i) a simple relationship between two truncated moments ; (ii) the hazard function.

Journal: :international journal of smart electrical engineering 2015
maryam darabi saeid piri

in this paper, the electrical consumption of a research center building is derived of the bills, then with defining of fuzzy bus thermal coefficient objective function for heating, the amount of available heat selling to research center building consumer that is produced by biomass solar hybrid source is calculated. with the capacity determination of biomass solar hybrid source to provide therm...

1998
Kenneth A. LaBel Allan H. Johnston Janet L. Barth Robert A. Reed Charles E. Barnes

Spacecraft performance requirements drive the utilization of commercial-off-the-shelf (COTS) components and emerging technologies in systems. The response of these technologies to radiation is often complex. This engenders a set of emerging radiation hardness assurance (RHA) issues which include displacement damage in optocouplers, high-precision and hybrid devices, enhanced low dose rate (ELDR...

2006
MOULINATH BANERJEE IAN W. MCKEAGUE

We investigate the problem of estimating the best binary decision tree approximation to the baseline hazard function in the Cox proportional hazards model. Our motivation is to find an effective way of condensing key functional information in the baseline hazard into a small number of estimable parameters. The parameters consist of a threshold and two hazard levels, one to the left of the thres...

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