Zobrazeno 1 - 10
of 160
pro vyhledávání: '"M.A. Wortman"'
Publikováno v:
Annals of Nuclear Energy. 110:979-988
Theoretical criteria for design or regulatory safety of nuclear power plants often take the form of requirements that some model of the “capacity” of the plant to respond to a hypothesized threat sufficiently exceed a model of the “load” pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63dd37de46f8b539c659ae2407f39fa0
https://doi.org/10.1016/j.anucene.2017.08.014
https://doi.org/10.1016/j.anucene.2017.08.014
Autor:
M.A. Wortman, Jorge Limón–robles
Publikováno v:
Probability in the Engineering and Informational Sciences. 23:261-280
This article offers an approach for studying the time-dependent occupancy distribution for a modest generalization of the GI/G/1 queuing system in which interarrival times and service times, although mutually independent, are not necessarily identica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b3dcf8375e728a561dbdc6e60e8885e
https://doi.org/10.1017/s0269964809000163
https://doi.org/10.1017/s0269964809000163
Autor:
Debra A. Elkins, M.A. Wortman
Publikováno v:
Naval Research Logistics. 52:224-231
We examine two key stochastic processes of interest for warranty modeling: (1) remaining total warranty coverage time exposure and (2) warranty load (total items under warranty at time t). Integral equations suitable for numerical computation are dev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::075ae8fde257b08a4423ca1eee91de3c
https://doi.org/10.1002/nav.20062
https://doi.org/10.1002/nav.20062
Autor:
Debra A. Elkins, M.A. Wortman
Publikováno v:
IEEE Transactions on Reliability. 53:200-204
This paper models & examines the impact of correlation in a failure arrival process which generates a warranty claim with each occurring failure. We show that even slight positive correlation in the warranty claims arrival process can significantly i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c0df92815b97fcbde947ca18d5c6037
https://doi.org/10.1109/tr.2004.829149
https://doi.org/10.1109/tr.2004.829149
Publikováno v:
IEEE Transactions on Reliability. 52:125-129
This paper addresses some of the fundamental assumptions underlying the bathtub curve. It is shown to be unlikely that any practical hazard function is decreasing near zero. Great care should be taken in interpreting the hazard function, particularly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15050852e8ec19ad046d1a2ed4ee390d
https://doi.org/10.1109/tr.2002.804492
https://doi.org/10.1109/tr.2002.804492
Autor:
Debra A. Elkins, M.A. Wortman
Publikováno v:
Methodology And Computing In Applied Probability. 3:239-253
We develop tight bounds and a fast parallel algorithm to compute the Markov renewal kernel. Knowledge of the kernel allows us to solve Markov renewal equations numerically to study non-steady state behavior in a finite state Markov renewal process. C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::237e5e4b788076dbb7ceddb533b48938
https://doi.org/10.1023/a:1013767704349
https://doi.org/10.1023/a:1013767704349
Publikováno v:
IEEE Transactions on Reliability. 48:182-188
This method computes tight lower and upper bounds for the renewal function. It is based on Riemann-Stieltjes integration, and provides bounds for solving certain renewal equations used in the study of availability. An error analysis is given for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cd05d67566c8814a7365ee509b2500e
https://doi.org/10.1109/24.784278
https://doi.org/10.1109/24.784278
Publikováno v:
Journal of Applied Probability. 36:558-569
We consider an infinite server queueing system. An examination of sample path dynamics allows a straightforward development of integral equations having solutions that give time-dependent occupancy (number of customers) and backlog (unfinished work)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07df88798110c7f6d291655789879a08
https://doi.org/10.1239/jap/1032374471
https://doi.org/10.1239/jap/1032374471
Autor:
Hayriye Ayhan, M.A. Wortman
Publikováno v:
IEEE Transactions on Automatic Control. 44:864-868
The authors develop a state variable feedback control for a class of assembly operations. The objective of this control is to increase the number of jobs completed within a time horizon T while keeping the job cycle times within an acceptable range w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e8a7ec3647eb023cc05f37db785e645
https://doi.org/10.1109/9.754835
https://doi.org/10.1109/9.754835
Autor:
Hayriye Ayhan, M.A. Wortman
Publikováno v:
European Journal of Operational Research. 112:107-121
In this paper, we examine throughput (mean number of completed assemblies per unit time) of closed assembly type queueing networks where machine processing times are drawn from general distributions. The system dynamics are characterized via a set of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ec48e03367ae05942515081e89d788a
https://doi.org/10.1016/s0377-2217(97)00390-1
https://doi.org/10.1016/s0377-2217(97)00390-1