Results 11 to 20 of about 864 (228)

Dynamic Physician Rostering in Emergency Departments: Managing Reentrant Patient Flows to Meet Excess Wait Time Targets. [PDF]

open access: yesHealth Care Sci
We develop a patient flow model that integrates return loops and formulate a risk‐aware physician rostering framework designed to strictly enforce excess wait time targets, for example, tail probability of delay (TPoD) service levels. We employ a simulation‐based iterative staffing approach (ISA) to determine the optimal number of physicians required ...
Dai X, Gao P, Xie X.
europepmc   +2 more sources

Asymptotic behavior of a critical fluid model for a processor sharing queue via relative entropy

open access: yesStochastic Systems, 2016
In this paper, we develop a new approach to studying the asymptotic behavior of fluid model solutions for critically loaded processor sharing queues. For this, we introduce a notion of relative entropy associated with measure-valued fluid model solutions.
Amber L. Puha, Ruth J. Williams
doaj   +1 more source

Fluid queues with synchronized output [PDF]

open access: yesOperations Research Letters, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Onno J. Boxma, Offer Kella, Liron Ravner
openaire   +2 more sources

The morphing of fluid queues into Markov-modulated Brownian motion

open access: yesStochastic Systems, 2015
Ramaswami showed recently that standard Brownian motion arises as the limit of a family of Markov-modulated linear fluid processes.We pursue this analysis with a fluid approximation for Markov-modulated Brownian motion.
Guy Latouche, Giang T. Nguyen
doaj   +1 more source

From Microscopic Droplets to Macroscopic Crowds: Crossing the Scales in Models of Short‐Range Respiratory Disease Transmission, with Application to COVID‐19

open access: yesAdvanced Science, 2023
Short‐range exposure to airborne virus‐laden respiratory droplets is an effective transmission route of respiratory diseases, as exemplified by Coronavirus Disease 2019 (COVID‐19).
Simon Mendez   +2 more
doaj   +1 more source

Fluid queues and regular variation [PDF]

open access: yesPerformance Evaluation, 1996
Summary: This paper considers a fluid queueing system, fed by N independent sources that alternate between silence and activity periods. We assume that the distribution of the activity periods of one or more sources is a regularly varying function of index \(\zeta\) .
openaire   +7 more sources

Hardware acceleration of number theoretic transform for zk‐SNARK

open access: yesEngineering Reports, EarlyView., 2023
An FPGA‐based hardware accelerator with a multi‐level pipeline is designed to support the large‐bitwidth and large‐scale NTT tasks in zk‐SNARK. It can be flexibly scaled to different scales of FPGAs and has been equipped in the heterogeneous acceleration system with the help of HLS and OpenCL.
Haixu Zhao   +6 more
wiley   +1 more source

Limit Behavior of Fluid Queues and Networks [PDF]

open access: yesOperations Research, 2005
A superposition of a large number of infinite source Poisson inputs or that of a large number of ON-OFF inputs with heavy tails can look like either a fractional Brownian motion or a stable Lévy motion, depending on the magnification at which we are looking at the input process (Mikosch et al. 2002).
D'Auria B., Samorodnitsky G.
openaire   +3 more sources

Analysis of fluid system fed by an infinite servers queue subject to catastrophes servers and reparable [PDF]

open access: yesMaǧallaẗ Al-Buḥūṯ Al-Tiǧāriyyaẗ
: This article examines an system with catastrophic server failures and repairs that feeds a fluid queue. The buffer content's stationary distribution function is expressed explicitly in terms of confluent queueing hyper geometric functions.
نادية محمد سرحان
doaj   +1 more source

Two coupled Lévy queues with independent input

open access: yesStochastic Systems, 2014
We consider a pair of coupled queues driven by independent spectrally-positive Lévy processes. With respect to the bi-variate workload process this framework includes both the coupled processor model and the two-server fluid network with independent ...
Jevgenijs Ivanovs, Onno Boxma
doaj   +1 more source

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