Results 41 to 50 of about 756 (151)

Comparisons of customer behavior in Markovian queues with vacation policies and geometric abandonments

open access: yes, 2020
This paper mainly studies customers’ equilibrium balking behavior in Markovian queues with single vacation and geometric abandonments. Whenever the system becomes empty, the server begins a vacation.
Naishuo Tian, Wei Sun, Shiyong Li
core   +1 more source

Navigating the Waves: The Global Pandemic's Impact on Container Shipping and Freight Rates Across Different Policy Scenarios

open access: yesNaval Research Logistics (NRL), Volume 72, Issue 7, Page 975-993, October 2025.
ABSTRACT The COVID‐19 pandemic has reverberated across global industries, including the international container shipping industry, where freight rates have become highly volatile. However, shipping lines appeared to thrive, particularly during the pandemic's initial 2 years.
Shiyuan Zheng, Changmin Jiang
wiley   +1 more source

Semi‐Markovian planning to coordinate aerial and maritime medical evacuation platforms

open access: yesAI Magazine, Volume 46, Issue 3, Fall 2025.
Abstract The transfer of patients between two aircraft using an underway watercraft increases medical evacuation reach and flexibility in maritime environments. The selection of any one of multiple underway watercraft for patient exchange is complicated by participating aircraft utilization histories and participating watercraft positions and ...
Mahdi Al‐Husseini   +2 more
wiley   +1 more source

What Is a Macrostate? Subjective Observations and Objective Dynamics [PDF]

open access: yes, 2003
We consider the question of whether thermodynamic macrostates are objective consequences of dynamics, or subjective reflections of our ignorance of a physical system.
Moore, Cristopher   +3 more
core  

Performance Analysis and Reliability Prediction of Multi‐State Service Systems With Multiple Failure Modes of Unreliable Server: An Engineering Perspective

open access: yesEngineering Reports, Volume 7, Issue 7, July 2025.
Flow chart highlighting the service mechanism of MRP with impatience and working breakdown of the server. ABSTRACT The long‐term reliability of a machining system is essential for ensuring the uninterrupted operation of an automated manufacturing process.
Shreekant Varshney   +4 more
wiley   +1 more source

Conditional Aalen–Johansen estimation

open access: yesScandinavian Journal of Statistics, Volume 52, Issue 2, Page 873-902, June 2025.
Abstract The conditional Aalen–Johansen estimator, a general‐purpose nonparametric estimator of conditional state occupation probabilities, is introduced. The estimator is applicable for any finite‐state jump process and supports conditioning on external as well as internal covariate information.
Martin Bladt, Christian Furrer
wiley   +1 more source

An MDP decomposition approach for traffic control at isolated signalized intersections

open access: yes, 2008
This article presents a novel approach for the dynamic control of a signalized intersection. At the intersection, there is a number of arrival flows of cars, each having a single queue (lane).
Haijema, R., Wal, J., van der
core   +1 more source

Resilience assessment of urban rail transit stations considering disturbance and time‐varying passenger flow

open access: yesComputer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 12, Page 1627-1651, 9 May 2025.
Abstract Unlike most urban rail transit (URT) resilience studies on URT lines or networks under major disturbances, this paper focuses on the resilience assessment of URT stations under high‐frequency daily disturbances with minor impacts. A resilience assessment metric with different resilience levels is proposed, which is calculated based on multiple
Xiaowei Liu   +5 more
wiley   +1 more source

A study of some M[x]/G/1 type queues with random breakdowns and bernouilli schedule server vacations based on a single vacation policy

open access: yes, 2008
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Queueing systems arise in modelling of many practical applications related to computer sciences, telecommunication networks, manufacturing and production ...
Maraghi, Farzana Abdulla
core  

Rare event simulation for non-Markovian tandem queues [PDF]

open access: yes, 2019
The main focus of this thesis is rare event simulation for non-Markovian tandem queues with i.i.d. arrival process and light-tailed service processes that are independent of each other.
Buijsrogge, Anne
core   +1 more source

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