Research Paper Case studies in industry and services
1. Fuzzy Goal Programming for Linear Facility Location-Allocation in a Supply Chain; The Case of Steel Industry

S. M. Arabzad; M. Ghorbani; M. J. Ranjbar

Volume 6, Issue 2 , Spring 2017, Pages 90-105

http://dx.doi.org/10.22105/riej.2017.49157

Abstract
  This paper presents a mathematical model for a facility location-allocation problem in order to design an integrated supply chain. We consider a supply chain including multiple suppliers, multiple products, multiple plants, multiple transportation alternatives and multiple customer zones. The problem ...  Read More

Research Paper Total quality management and quality engineering
2. Extracting of Relationships Between Modern Management Techniques in SME Manufacturing Support and Procurement of Equipment for Oil Companies of Iran

H. Zandhessami; A. Rahgozar

Volume 6, Issue 2 , Spring 2017, Pages 106-120

http://dx.doi.org/10.22105/riej.2017.49164

Abstract
  The organization can fully benefit from efforts to improve quality through programs such as total quality management. Just-in-time and total quality management combine to support the successful implementation of agile manufacturing programs which, in turn, result in the organization’s ability to ...  Read More

Research Paper Operations Research
3. Competition in Supply Chain Network: Retailers’ Risk Averseness Approach

H. Golpira; S. E. Najafi; M. Zandieh; S. Sadi-Nezhad

Volume 6, Issue 2 , Spring 2017, Pages 121-128

http://dx.doi.org/10.22105/riej.2017.49171

Abstract
  This paper formulates a competitive supply chain network throughout a mixed integer linear programming problem, considering demand uncertainty and retailers risk averseness. That is, makes the model more realistic in comparison with the others. Employed conditional value at risk method through the data-driven ...  Read More

Research Paper Systems and service modeling and simulation
4. Classification and Comparison of the Hybrid Collaborative Filtering Systems

F. S. Gohari; M.J. Tarokh

Volume 6, Issue 2 , Spring 2017, Pages 129-148

http://dx.doi.org/10.22105/riej.2017.49158

Abstract
  Recommender systems have become fundamental applications in overloaded information domains like e-commerce. These systems aim to provide users with suggestions about items that are likely to be of their interest. Collaborative Filtering (CF) is one of the most successful approaches in recommender systems. ...  Read More

Research Paper Supply chain management
5. Dynamic Pricing Decisions for Substitutable Products

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

Volume 6, Issue 2 , Spring 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

Research Paper Mathematical modelling
6. Non-Standard Finite Difference Schemes for Solving Singular Lane-Emden Equation

H. Saberi Najafi; A. Yaghoubi

Volume 6, Issue 2 , Spring 2017, Pages 161-171

http://dx.doi.org/10.22105/riej.2017.92303.1001

Abstract
  In this paper we construct Non-Standard finite difference schemes (NSFD) for numerical solution of nonlinear Lane-Emden type equations which are nonlinear ordinary dierential equations on semi-infinite domain. They are categorized as singular initial value problems. This equation describes a variety ...  Read More

Research Paper Econometric Models
7. Solving Monetary (MIU) models with Linearized Euler Equations: Method of Undetermined Coefficients

S.F. Fakhrehosseini; Meysam kaviani

Volume 6, Issue 2 , Spring 2017, Pages 172-183

http://dx.doi.org/10.22105/riej.2017.94115.1005

Abstract
  This paper attempts to solve a benchmark money in utility model by first order Taylor approximation to the policy function. After a brief summary of recent development in first order Taylor approximation in solving dynamic stochastic general equilibrium models, we choose Sidrauski’s Money in utility ...  Read More