Digital twin-driven deep reinforcement learning for adaptive task allocation in robotic construction

D Lee, SH Lee, N Masoud, MS Krishnan… - Advanced Engineering …, 2022 - Elsevier
In order to accomplish diverse tasks successfully in a dynamic (ie, changing over time)
construction environment, robots should be able to prioritize assigned tasks to optimize their …

Staffing to stabilize the tail probability of delay in service systems with time-varying demand

Y Liu - Operations Research, 2018 - pubsonline.informs.org
Analytic formulas are developed to set the time-dependent number of servers to stabilize the
tail probability of customer waiting times for the Gt/GI/st+ GI queueing model, which has a …

A Study on Optimal Release Schedule for Multiversion Software

YS Huang, CC Fang, CH Chou… - INFORMS Journal on …, 2024 - pubsonline.informs.org
Research on software reliability growth models (SRGMs) has been extensively conducted
for decades, and the models were often developed based on two assumptions:(1) once the …

Many-server Gaussian limits for overloaded non-Markovian queues with customer abandonment

AK Aras, X Chen, Y Liu - Queueing Systems, 2018 - Springer
Abstract Extending Ward Whitt's pioneering work “Fluid Models for Multiserver Queues with
Abandonments, Operations Research, 54 (1) 37–54, 2006,” this paper establishes a many …

Assessing uncertainty and risk in an expeditionary military logistics network

BM McConnell, TJ Hodgson, MG Kay… - The Journal of …, 2021 - journals.sagepub.com
Uncertainty is rampant in military expeditionary operations spanning high-intensity combat
to humanitarian operations. These missions require rapid planning and decision-support …

Scheduling to differentiate service in a multiclass service system

Y Liu, X Sun, K Hovey - Operations Research, 2022 - pubsonline.informs.org
Motivated by large-scale service systems, we study a multiclass queueing system having
class-dependent service rates and heterogeneous abandonment distributions. Our objective …

Efficient simulation of non-Poisson non-stationary point processes to study queueing approximations

N Ma, W Whitt - Statistics & Probability Letters, 2016 - Elsevier
A nonstationary point process can be efficiently simulated by exploiting a representation as
the composition of a rate-one process and the cumulative arrival rate function, provided that …

Clustering Then Estimation of Spatio-Temporal Self-Exciting Processes

H Zhang, D Zhan, J Anderson… - INFORMS Journal …, 2024 - pubsonline.informs.org
We propose a new estimation procedure for general spatio-temporal point processes that
include a self-exciting feature. Estimating spatio-temporal self-exciting point processes with …

Heavy-traffic limit for the initial content process

AK Aras, Y Liu, W Whitt - Stochastic Systems, 2017 - pubsonline.informs.org
To understand the performance of a queueing system, it can be useful to focus on the
evolution of the content that is initially in service at some time. That necessarily will be the …

Simulation-based evaluation on integrating additive manufacturing capability in a deployed military environment

TA Moore, BM McConnell… - 2018 Winter Simulation …, 2018 - ieeexplore.ieee.org
This article develops a data-driven forecast of repair parts for the M109A6 Paladin self-
propelled 155 mm howitzer, and this forecast drives a discrete-event simulation to assess …