Research Paper Operations Research
A new queuing-based mathematical model for hotel capacity planning: a genetic algorithm solution

Saeed Khalili; Masood Mosadegh Khah

Volume 7, Issue 3 , September 2020, Pages 203-220

  This study presents a new mathematical optimization model using queuing theory to determine the hotel capacity in an optimal manner. For this purpose, a Knapsack model based on the queuing theory is proposed. In this regard, after simulating a hotel's reception system with the help of queuing models ...  Read More

Research Paper Scheduling
A deep-belief network approach for course scheduling

Hassan Rashidi; Maryam Hassanpour

Volume 7, Issue 3 , September 2020, Pages 221-237

  The scheduling of academic courses is a problem in which a weekly schedule is produced for educational purposes. Many different types of scheduling problems exist at various universities in accordance with their laws, needs, and constraints. These problems fall into the category of NP-hard problems and ...  Read More

Research Paper Supply chain management
Design a green closed loop supply chain network by considering discount under uncertainty

Javid Ghahremani-Nahr; Hamed Nozari; Seyyed Esmaeil Najafi

Volume 7, Issue 3 , September 2020, Pages 238-266

  The mathematical model of a multi-product multi-period multi-echelon closed-loop supply chain network design under uncertainty is designed in this paper. The designed network consists of raw material suppliers, plants, warehouses, distribution centers, and customer zones in forward chain and collection ...  Read More

Research Paper Data mining
Personnel selection and prediction of organizational positions using data mining algorithms (case study: Mammut industrial complex)

Fatemeh Mirsaeedi; Iman Sadeghi; Mohammad Ghodoosi

Volume 7, Issue 3 , September 2020, Pages 267-279

  This study aims to identify and employ qualified individuals and assign different organizational positions. Accordingly, a data mining approach is proposed. This paper presents an empirical study which has important practical application in modern human resource management. Therefore, effective features ...  Read More

Review Paper Data Envelopment Analysis, DEA
Efficiency, effectiveness and productivity of personnel’s health in petrochemical companies

Mohammad Fallah

Volume 7, Issue 3 , September 2020, Pages 280-286

  This paper examines the petrochemical companies listed on the stock from the perspective of health indicators. Petrochemical companies are working to create health platforms to prevent accidents and reduce health costs. In this study, using two-stage data envelopment analysis technique, the efficiency ...  Read More

Research Paper Data Envelopment Analysis, DEA
Modifying the interconnecting activities through an adjusted dynamic DEA model: a slacks-based measure approach

Hilda Saleh; Morteza Shafiee; Mohammad Sanji

Volume 7, Issue 3 , September 2020, Pages 287-300

  A new approach to the dynamic Data Envelopment Analysis (DEA) referred to as the adjusted dynamic DEA, is proposed in this study. Adjusted dynamic DEA optimizes the production activity of DMUs by introducing adjustment variables to modify the interconnecting activities between consecutive terms, solving ...  Read More

Research Paper Mathematical modelling
A fully implicit non-standard finite difference scheme for one dimensional Burgers' equation

Abdolrahman Yaghoobi; Hashem Saberi Najafi

Volume 7, Issue 3 , September 2020, Pages 301-312

  In this paper we have studied a numerical approximation to the solution of the nonlinear Burgers' equation. The presented scheme is obtained by using the Non-Standard Finite Difference Method (NSFD). The use of NSFD method and its approximations play an important role for the formation of stable numerical ...  Read More