Scheduling
A mathematical model for integrated operating room and surgical member scheduling considering lunch break

M. Hamid; R. Tavakkoli-Moghaddam; B. Vahedi-Nouri; H. Arbabi

Volume 9, Issue 4 , December 2020, , Pages 304-312

http://dx.doi.org/10.22105/riej.2021.263608.1175

Abstract
  Operating rooms (ORs) are among the most influential departments of a hospital that a major portion of its expenditures and revenues originate from it. Due to the limited resources and the presence of different stockholders, effective management, and the optimal planning of this department are challenging. ...  Read More

Supply chain management
Dynamic Pricing Decisions for Substitutable Products

S. Aliari-Kardehdeh; S. Ayazi-Yazdi; R. Tavakkoli-Moghaddam; H. Farrokhi-Asl

Volume 6, Issue 2 , June 2017, , Pages 149-160

http://dx.doi.org/10.22105/riej.2017.49170

Abstract
  This paper considers a dynamic pricing decision problem, in which two different manufacturers compete to distribute substitutable products through a single retailer under two presented scenarios. In the first scenario, the pricing policy is determined via a centralized decision-making, while the second ...  Read More

Inventory, logistics, and transportation
Solving a Bi-Objective Transportation Vehicle Routing Problem for Waste Collection by a New Hybrid Algorithm

H. Farrokhi-Asl; R. Tavakkoli-Moghaddam

Volume 5, 1(4) , November 2016, , Pages 16-42

http://dx.doi.org/10.22105/riej.2017.49168

Abstract
  This paper is an extension of the well-known vehicle routing problem (VRP) consisting of two stages. The first and second stages deal with the vehicle routing and transportation problems, respectively. Waste collection is one of the applications of the considered problem in a real world situation. A ...  Read More

Supply chain management
A Multi-Objective Model for Location-Allocation Problem in a Supply Chain

F. Mokhtari karchegani; H. Shirouyehzad; R. Tavakkoli-Moghaddam

Volume 4, 1(4) , November 2015, , Pages 24-42

http://dx.doi.org/10.22105/riej.2017.49155

Abstract
  The fast changing and dynamic global business environment require companies to plan their entire supply chain from the raw material supplier to the end customer. In this paper, we design an integrated supply chain including multiple suppliers, multiple factories, multiple distributors, multiple customers, ...  Read More

Solving a Facility Location Problem by Three Multi-Criteria Decision Making Methods

M. Niyazi; R. Tavakkoli-Moghaddam

Volume 3, Issue 4 , December 2014, , Pages 41-56

Abstract
  Selecting the most appropriate and optimal facility location for a new organization or expansion of an existing location is an important strategic issue. The location, which results in higher economic benefits through increased productivity and good distribution network, is the best location. It is necessary ...  Read More