Results 31 to 40 of about 4,046,500 (265)

Reliability and Inference for Multi State Systems: The Generalized Kumaraswamy Case

open access: yesMathematics, 2021
Semi-Markov processes are typical tools for modeling multi state systems by allowing several distributions for sojourn times. In this work, we focus on a general class of distributions based on an arbitrary parent continuous distribution function G with ...
Vlad Stefan Barbu   +2 more
doaj   +1 more source

Do Sojourn Effects on Personality Trait Changes Last? A Five‐Year Longitudinal Study

open access: yesEuropean Journal of Personality, EarlyView., 2020
Abstract This study examined sojourners' long‐term personality trait changes over five years, extending previous research on immediate sojourn effects. A sample of German students (N = 1095) was surveyed thrice (T1–T3) over the course of an academic year.
Julia Richter   +4 more
wiley   +1 more source

SemiMarkov: An R Package for Parametric Estimation in Multi-State Semi-Markov Models

open access: yesJournal of Statistical Software, 2015
Multi-state models provide a relevant tool for studying the observations of a continuous-time process at arbitrary times. Markov models are often considered even if semi-Markov are better adapted in various situations.
Agnieszka Król, Philippe Saint-Pierre
doaj   +1 more source

A simple model for COVID-19

open access: yesInfectious Disease Modelling, 2020
An SL1L2I1I2A1A2R epidemic model is formulated that describes the spread of an epidemic in a population. The model incorporates an Erlang distribution of times of sojourn in incubating, symptomatically and asymptomatically infectious compartments.
Julien Arino, Stéphanie Portet
doaj   +1 more source

A Queuing Network Model for Solving Facility Layout Problem in Multifloor Flow Shop

open access: yesIEEE Access, 2022
Based on comprehensive consideration of stochastic factors and the system performance, we presented an integrated queuing network model (IQNM) to effectively optimize the facility layout of the multi-floor flow shop (MFFS).
Xiaopeng Liu   +5 more
doaj   +1 more source

On the estimation of misclassification probabilities of chronic kidney disease using continuous time hidden Markov models [PDF]

open access: yesJournal of Nephropharmacology, 2019
Introduction: The severity of chronic kidney disease (CKD) is reflected in the form of stages of CKD and can be decided on the basis of estimated glomerular filtration rate (eGFR).
Gurprit Grover   +3 more
doaj   +1 more source

A Two-Server Queue with Interdependence between Arrival and Service Processes

open access: yesMathematics, 2023
In this paper, we analyse a queueing system with two servers where the arrival and service processes are interdependent. The evolution of these processes is governed by transitions on the product space of three Markov chains, which are descriptors of the
Sindhu S   +2 more
doaj   +1 more source

Sojourn Times in Feedback Queues [PDF]

open access: yes, 1988
In many modern computer-communication systems, a job may be processed in several phases, or a job may generate new tasks. Such phenomena can be modeled by service systems with feedback. In the queueing literature, attention has been mainly devoted to single-service queues with so-called Bernoulli feedback: when a customer (task) completes his service ...
Berg, van den, J.L., Boxma, O.J.
openaire   +1 more source

Performance characteristics of the fork-join queuing system

open access: yesInformatika, 2023
Objectives. The problem of investigating a fork-join queuing system is considered. It is required to build the process of the system functioning, to find the condition for the existence of a stationary distribution, and propose algorithms for calculating
V. I. Klimenok
doaj   +1 more source

Preventing large sojourn times using SMART scheduling [PDF]

open access: yes, 2008
Recently, the so-called class of SMART scheduling policies has been introduced to formalize the common heuristic of "biasing toward small jobs." We study the tail of the sojourn-time (response-time) distribution under both SMART policies and the ...
Wierman, A.   +8 more
core   +1 more source

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