Results 71 to 80 of about 6,641,323 (292)

Appointment capacity planning in specialty clinics: a queueing approach [PDF]

open access: yes, 2015
Specialty clinics provide specialized care for patients referred by primary care physicians, emergency departments, or other specialists. Urgent patients must often be seen on the referral day, whereas nonurgent referrals are typically booked an ...
Izady, N., Izady, Navid
core   +1 more source

Queues with Working Vacations: A Survey

open access: yesMathematics
In this paper, we present an extensive literature review on queueing systems with working vacations. The concept of a working vacation generalises the concept of server vacations, which are time periods during which the server is absent and cannot serve ...
Dieter Fiems
doaj   +1 more source

A Markovian batch arrival queueing system with disasters, working breakdowns, and impatience: Mathematical modeling and economic analysis [PDF]

open access: yesYugoslav Journal of Operations Research
Machining systems are essential for many industrial applications, such as manufacturing, processing, and assembly. However, these systems are often exposed to various sources of uncertainty and disruption, such as disasters and customer impatience. These
Ramdani Hayat   +2 more
doaj   +1 more source

Healthcare queueing models. [PDF]

open access: yes
Healthcare systems differ intrinsically from manufacturing systems. As such, they require a distinct modeling approach. In this article, we show how to construct a queueing model of a general class of healthcare systems.
Lambrecht, Marc, Creemers, Stefan
core  

Inventory Replenishment and Transshipment for Distributed Autologous Cell Therapy Manufacturing Networks

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT Autologous cell therapy (AuCT) manufacturing networks must balance two competing objectives: reducing cost and improving patient access to time‐sensitive therapy. This study compares three AuCT manufacturing network designs: a centralized network with a single manufacturing facility, a coordinated point‐of‐care (POC) network in which POCs can ...
Zhaowei Li   +3 more
wiley   +1 more source

Operations Research‐Based Formalisation and Design of Sustainable Reverse Logistics for E‐Waste Supply Chains

open access: yesBusiness 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

Approximating multiple class queueing models with loss models [PDF]

open access: yes
Multiple class queueing models arise in situations where some flexibility is sought through pooling of demands for different services. Earlier research has shown that most of the benefits of flexibility can be obtained with only a small proportion of ...
VAN DEN SCHRIECK, Jean-Christophe   +1 more
core  

Fueling Tomorrow: Scenario Planning for the Future of Gas Stations

open access: yesBusiness 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

APPROXIMATION OF PROBABILITY DISTRIBUTIONS IN QUEUEING MODELS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2013
For probability distributions with variation coefficient, not equal to unity, mathematical dependences for approximating distributions on the basis of first two moments are derived by making use of multi exponential distributions.
T. I. Aliev
doaj  

Optimization of a Call Centre Performance Using the Stochastic Queueing Models

open access: yesBusiness Systems Research, 2014
Background A call centre usually represents the first contact of a customer with a given company. Therefore, the quality of its service is of key importance. An essential factor of the call centre optimization is the determination of the proper number of
Brezavšček Alenka, Baggia Alenka
doaj   +1 more source

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