Gatekeepers at work: An empirical analysis of a maternity unit
We use a detailed operational and clinical data set from a maternity hospital to investigate
how workload affects decisions in gatekeeper-provider systems, where the servers act as …
how workload affects decisions in gatekeeper-provider systems, where the servers act as …
Gatekeeping, fast and slow: An empirical study of referral errors in the emergency department
Using data from over 300,000 visits to an emergency department (ED), we study the
accuracy of gatekeeping decisions—the choices that physicians make regarding patient …
accuracy of gatekeeping decisions—the choices that physicians make regarding patient …
Border crossing delay prediction using transient multi-server queueing models
As a result of the continued increase in travel demand coupled with the need for tighter
security and inspection procedures after September 11, border crossing delay has recently …
security and inspection procedures after September 11, border crossing delay has recently …
Strategic queueing behavior and its impact on system performance in service systems with the congestion-based staffing policy
P Guo, ZG Zhang - Manufacturing & Service Operations …, 2013 - pubsonline.informs.org
We study strategic customer behavior in a multiserver stochastic service system with a
congestion-based staffing (CBS) policy. With the CBS policy, the number of working servers …
congestion-based staffing (CBS) policy. With the CBS policy, the number of working servers …
Design, simulation and performance evaluation of a risk-based border management system
Border control systems at Europe's Schengen (and worldwide) borders are necessary to
mitigate cross-border threats, but are perceived as free-traveling bottlenecks. Today's …
mitigate cross-border threats, but are perceived as free-traveling bottlenecks. Today's …
The Generalized c/μ Rule for Queues with Heterogeneous Server Pools
We study the optimal control of a queueing model with a single customer class and
heterogeneous server pools. The main objective is to strike a balance between the holding …
heterogeneous server pools. The main objective is to strike a balance between the holding …
Two-stage security screening strategies in the face of strategic applicants, congestions and screening errors
C Song, J Zhuang - Annals of Operations Research, 2017 - Springer
In a security screening system, a tighter screening policy not only increases the security
level, but also causes congestion for normal people, which may deter their use and …
level, but also causes congestion for normal people, which may deter their use and …
Operational impact of service innovations in multi‐step service systems
C Tong, M Nagarajan, Y Cheng - Production and …, 2016 - journals.sagepub.com
Service quality is an important attribute that is used to characterize many service systems. In
this study, we examine a service system with two consecutive steps that have shared …
this study, we examine a service system with two consecutive steps that have shared …
Demand prediction and dynamic workforce allocation to improve airport screening operations
Workforce allocation and configuration decisions at airport security checkpoints (eg, number
of lanes open) are usually based on passenger volume forecasts. The accuracy of such …
of lanes open) are usually based on passenger volume forecasts. The accuracy of such …
Arena simulation for aviation passenger security-check systems
CH Wang - Genetic and Evolutionary Computing: Proceedings of …, 2017 - Springer
In this paper, we develop an Arena simulation model to study the optimal design of security-
check systems for screening passengers in airports. With the increasing of terrorist attacks …
check systems for screening passengers in airports. With the increasing of terrorist attacks …