نتایج جستجو برای: hazard rate

تعداد نتایج: 1010761  

2008
F. H. RUYMGAART

In Campbell (1982) and Campbell & FOldes (1982) some asymptotic properties of bivariate empirical hazard processes under random censoring are given. Taking the representation of the empirical hazard process for bivariate randomly censored samples in Campbell (1982) as a starting point and restricting attention to strong properties, we obtain a speed of strong convergence for the weighted bivari...

ژورنال: طلوع بهداشت یزد 2017
امیدوار, راضیه, فلاح زاده, حسین, مهربانی, مریم, میرزایی, مسعود, نماینده, مهدیه,

Introduction: Heart disease is the leading cause of death in the world. Acute Myocardial Infarction (AMI) is one of the most common cause of mortality causes in Iran. The purpose of this study is survey of the transition rates between heart disease stages and the effect of metabolic syndrome hazard on these transition rates by using a multi-state Markov model. Materials and Methods: 457 patient...

افخمی اردکانی, محمد, حاجی‌زاده, ابراهیم, عسکری شاهی, محسن,

Background: Diabetes is a chronic non-communicable disease with increasing prevalence. Retinopathy is one of the main complications of diabetes. Early diagnosis and treatment of retinopathy can reduce the risk of low vision and blindness. The aim of this study was to apply regression analysis of current status data to determine risk factors of diabetic retinopathy in patients with type 2 diabet...

In this article, we consider the problem of estimating the stress-strength reliability $Pr (X > Y)$ based on upper record values when $X$ and $Y$ are two independent but not identically distributed random variables from the power hazard rate distribution with common scale parameter $k$. When the parameter $k$ is known, the maximum likelihood estimator (MLE), the approximate Bayes estimator and ...

2013
Joyce C. Ho Yubin Park Carlos Carvalho Joydeep Ghosh

Cardiac arrest is a deadly condition caused by a sudden failure of the heart with an inhospital mortality rate of ∼ 80%. Therefore, the ability to accurately estimate patients at high risk of cardiac arrest is crucial for improving the survival rate. Existing research generally fails to utilize a patient’s temporal dynamics. In this paper, we present two dynamic cardiac risk estimation models, ...

2003
Elisabeth Sadoulet

∑ Loans are transactions over time, with risk fi Need for insurance fi MH problems Risk: Borrower needs insurance (limited liability), as even loans for good projects cannot be repaid in bad years. But lender cannot provide insurance as he cannot monitor genuine failures from false claims ∫ Problem of enforcement. (Moral Hazard (MH) in repayment). Limited liability induces risk taking behavior ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده کشاورزی 1390

abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...

2008
Vadim Belenky Andrew Breuer

The continuous push towards improved technologies allows designers to resolve the naval architecture problems with a higher reliability and to optimize designs. In this process it becomes increasingly important to recognize that most statutes and the Industry practice at large have depended on a few criteria to cover a very large number of hazards. Tools such as hazard identification and risk a...

Journal: :journal of agricultural science and technology 2013
m. vatankhah

the data set employed in this study was comprised of a number of 6,800 records of lamb’s longevity and their survival rate, collected from 1989 through 2009, from the lori-bakhtiari experimental flock at the shooli station in shahrekord, iran. the data were analyzed using linear models and proportional hazard models with weibull function. these models included fixed factors and direct additive ...

Journal: :Symmetry 2017
Longxiang Fang Yanqin Wang

Abstract: In this paper, we discuss stochastic comparisons of lifetimes of series and parallel systems with heterogeneous Fréchet components in terms of the usual stochastic order, reversed hazard rate order and likelihood ratio order. The partial results established here extend some well-known results in the literature of Gupta et al. Specifically, first, we generalize the result of Theorem 2 ...

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