Results 21 to 30 of about 3,364,430 (292)

Prediction of long term stability by extrapolation [PDF]

open access: yes, 2000
This paper studies the possibility of using the survival function to predict long term stability by extrapolation. The survival function is a function of the initial coordinates and is the number of turns a particle will survive for a given set of ...
Parzen, G.
core   +3 more sources

Schur-concave survival functions and survival analysis

open access: yesJournal of Computational and Applied Mathematics, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Richard E. Barlow, SPIZZICHINO, Fabio
openaire   +1 more source

Preimplantation biopsy predicts delayed graft function, glomerular filtration rate and long-term graft survival of transplanted kidneys [PDF]

open access: yes, 2016
Background The predictive value of preimplantation biopsies for long-term graft function is often limited by conflicting results. The aim of this study was to evaluate the influence of time-zero graft biopsy histological scores on early and late graft ...
Bianchi, Valentina   +10 more
core   +2 more sources

Analysis of survival data with cross-effects of survival functions [PDF]

open access: yesBiostatistics, 2004
We present a model and semiparametric estimation procedures for analysis of survival data with cross-effects (CE) of survival functions. Finite sample properties of the estimators are analyzed by simulation. A goodness-of-fit test for the proportional hazards model against the CE model is proposed. The well known data concerning effects of chemotherapy
Bagdonavicius, Vilijandas   +2 more
openaire   +3 more sources

"Suboptimal" kidney donors: The experience with tacrolimus-based immunosuppression [PDF]

open access: yes, 1996
Female, pediatric, and older donors have been associated with inferior graft survival after renal transplantation. We analyzed these three subgroups in 397 patients receiving tacrolimus-based immunosuppression. There were no differences in recipient age,
Alexander   +23 more
core   +1 more source

A New Lifetime Distribution with Decreasing and Upside-Down Bathtub-Shaped Hazard Rate Function

open access: yesStatistica, 2020
We introduce a new lifetime distribution, called the alpha-power transformed Lomax (APTL) distribution which generalizes the Lomax distribution to provide better fits than the Lomax distribution and some of its known generalizations.
Sanku Dey   +4 more
doaj   +1 more source

Comparison of nonparametric estimates of the survival functions

open access: yesВестник Самарского университета: Естественнонаучная серия, 2023
The article compares three types of estimates: exponential, multiplying and power structures for the survival function of three random censoring observations on the right. It was previously established that all these three estimates are equivalent with a
Abdurakhim A. Abdushukurov   +1 more
doaj   +1 more source

Aging functions and multivariate notions of NBU and IFR [PDF]

open access: yes, 2010
For d≥2, let X=(X1, …, Xd) be a vector of exchangeable continuous lifetimes with joint survival function $\overline{F}$. For such models, we study some properties of multivariate aging of $\overline{F}$ that are described by means of the multivariate ...
Avérous   +13 more
core   +2 more sources

Waiting times between orders and trades in double-auction markets [PDF]

open access: yes, 2006
In this paper, the survival function of waiting times between orders and the corresponding trades in a double-auction market is studied both by means of experiments and of empirical data.
Alessandra Tedeschi   +47 more
core   +2 more sources

Estimating Propensity Scores and Causal Survival Functions Using Prevalent Survival Data [PDF]

open access: yesBiometrics, 2012
SummaryThis article develops semiparametric approaches for estimation of propensity scores and causal survival functions from prevalent survival data. The analytical problem arises when the prevalent sampling is adopted for collecting failure times and, as a result, the covariates are incompletely observed due to their association with failure time ...
Cheng, Yu-Jen, Wang, Mei-Cheng
openaire   +3 more sources

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