Modelling and analysis of inventory management systems in healthcare: A review and reflections

E Saha, PK Ray - Computers & Industrial Engineering, 2019 - Elsevier
Inventory management in a healthcare system needs to be compatible with its operations
and critical characteristics ensuring minimization of inventory-related cost as well as …

A periodic-review inventory system with a capacitated backup supplier for mitigating supply disruptions

J Chen, X Zhao, Y Zhou - European Journal of Operational Research, 2012 - Elsevier
We consider a periodic-review inventory system with two suppliers: an unreliable regular
supplier that may be disrupted for a random duration, and a reliable backup supplier that …

An integrated data-driven method using deep learning for a newsvendor problem with unobservable features

DP Neghab, S Khayyati, F Karaesmen - European Journal of Operational …, 2022 - Elsevier
We consider a single-period inventory problem with random demand with both directly
observable and unobservable features that impact the demand distribution. With the recent …

Using four metaheuristic algorithms to reduce supplier disruption risk in a mathematical inventory model for supplying spare parts

K Baghizadeh, N Ebadi, D Zimon, L Jum'a - Mathematics, 2022 - mdpi.com
Due to the unexpected breakdowns that can happen in various components of a production
system, failure to reach production targets and interruptions in the process of production are …

Integrated optimisation of pricing, manufacturing, and procurement decisions of a make-to-stock system operating in a fluctuating environment

O Karabağ, B Gökgür - International Journal of Production …, 2023 - Taylor & Francis
Manufacturers experience random environmental fluctuations that influence their supply and
demand processes directly. To cope with these environmental fluctuations, they typically …

A location-inventory model considering a strategy to mitigate disruption risk in supply chain by substitutable products

M Farahani, H Shavandi, D Rahmani - Computers & Industrial Engineering, 2017 - Elsevier
In this paper we consider a multiple products inventory location problem with disruption.
Disruptions may occur in any supply chain due to several reasons such as earthquakes …

Newsvendor models with dependent random supply and demand

HK Okyay, F Karaesmen, S Özekici - Optimization Letters, 2014 - Springer
The newsvendor model is perhaps the most widely analyzed model in inventory
management. In this single-period model, the only source of randomness is the demand …

Mean-variance newsvendor model with random supply and financial hedging

M Tekin, S Özekici - IIE Transactions, 2015 - Taylor & Francis
In this paper, we follow a mean-variance (MV) approach to the newsvendor model. Unlike
the risk-neutral newsvendor that is mostly adopted in the literature, the MV newsvendor …

Newsvendor model with random supply and financial hedging: Utility-based approach

F Sayın, F Karaesmen, S Özekici - International Journal of Production …, 2014 - Elsevier
This paper takes a utility-based approach to the single-period and single-item newsvendor
model. Unlike most models in the literature the newsvendor is not necessarily risk-neutral …

A Markov modulated Poisson model for software reliability

J Landon, S Özekici, R Soyer - European Journal of Operational Research, 2013 - Elsevier
In this paper, we consider a latent Markov process governing the intensity rate of a Poisson
process model for software failures. The latent process enables us to infer performance of …