Results 51 to 60 of about 33,611 (226)
Heavy-traffic limits for waiting times in many-server queues with abandonment
, 2009 We establish heavy-traffic stochastic-process limits for waiting times in many-server queues with customer abandonment. If the system is asymptotically critically loaded, as in the quality-and-efficiency-driven (QED) regime, then a bounding argument ...
Talreja, Rishi, Whitt, Ward
core +1 more source
Anatomical Sciences Education, EarlyView.Abstract Pacing during anatomy laboratory examinations may influence both student performance and test anxiety. This study compared bell‐paced (BP) and self‐paced (SP) timing structures to assess their impact on students' test performance, test anxiety, and pacing preferences.
Danielle C. Bentley +2 more
wiley +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT This study demonstrates how a profitable, lean, and environmentally responsible e‐waste reverse logistics system can be designed using integrated Operations Research (OR) techniques. Addressing the growing urgency of responsible consumption (UN SDG 12) and the projected rise of the e‐waste sector to USD 137.60 billion by 2029, the research ...
Sheeba Pathak, Hajar Fatorachian
wiley +1 more source
An ODE for an overloaded X model involving a stochastic averaging principle
Stochastic Systems, 2011 We study an ordinary differential equation (ODE) arising as the many-server heavy-traffic fluid limit of a sequence of overloaded Markovian queueing models with two customer classes and two service pools.
Ward Whitt, Ohad Perry
doaj
, 2022 We consider the FCFS $GI/GI/n$ queue, and prove the first simple and explicit bounds that scale as $\frac{1}{1-\rho}$ (and sometimes better). Here $\rho$ denotes the corresponding traffic intensity.
Goldberg, David A., Li, Yuan
core
Fueling Tomorrow: Scenario Planning for the Future of Gas Stations
Business Strategy and the Environment, EarlyView.ABSTRACT Transport electrification is reshaping the service infrastructures that mediate everyday mobility, yet most electrification scenario studies remain macrolevel and offer limited insight into how incumbent forecourt (gas‐station) networks can adapt under deep uncertainty.
Joao Gabriel Rosa +2 more
wiley +1 more source
Nearly periodic behavior in the overloaded G/D/s+GI queue
Stochastic Systems, 2011 Under general conditions, the number of customers in a GI/D/s+GI many-server queue at time t converges to a unique stationary distribution as t → ∞. However, simulations show that the sample paths routinely exhibit nearly periodic behavior over long time
Ward Whitt, Yunan Liu
doaj
Flexible Queueing Architectures
, 2017 We study a multi-server model with $n$ flexible servers and $n$ queues, connected through a bipartite graph, where the level of flexibility is captured by the graph's average degree, $d_n$. Applications in content replication in data centers, skill-based
Tsitsiklis, John N., Xu, Kuang
core +1 more source
Towards a Developmental Retribution and Reciprocity Model (RRM): Implications for Youth Justice
Behavioral Sciences &the Law, EarlyView.ABSTRACT Youth justice systems are frequently justified by reference to developmental change, yet chronological age is often treated as a proxy for underlying psychological processes. This paper develops a Developmental Retribution and Reciprocity Model (RRM), integrating evolutionary criminology with contemporary developmental neuroscience to clarify ...
Evelyn Svingen
wiley +1 more source
Fairness in overloaded parallel queues [PDF]
, 2011 Maximizing throughput for heterogeneous parallel server queues has received quite a bit of attention from the research community and the stability region for such systems is well understood.
Armony, Mor +2 more
core +2 more sources