Calculating benefits received from Business Process Outsourcing (BPO): An empirical study of a food industry company in Iran

Morteza Shafiee; Sara Emadi

Volume 7, Issue 1 , June 2020, Pages 1-18

  Today, outsourcing is recognized as one of the most effective strategies in the business world. In this regard, outsourcing of business processes is considered to be one of the most common forms of outsourcing. The purpose of this study is to provide In-depth and quantitative analysis of the benefits ...  Read More

Balancing public bicycle sharing system by defining response rates for destinations

Behzad Maleki Vishkaei; Iraj Mahdavi; Nezam Mahdavi Amiri; Esmaile Khorram

Volume 7, Issue 1 , June 2020, Pages 19-34

  Public Bicycle Sharing System (PBSS) is used as a way to reduce traffic and pollution in cities. Its performance is related to availability of bicycles for picking up and free docks to return them. Existence of different demand types leads to the emergence of imbalanced stations. Here, we try to balance ...  Read More

A green transportation location-inventory-routing problem by dynamic regional pricing

Masoud Rabbani; Fatemeh Navazi; Niloofar Eskandari; Hamed Farrokhi-Asl

Volume 7, Issue 1 , June 2020, Pages 35-58

  Non-uniform distribution of customers in a region and variation of their maximum willingness to pay at distinct areas make regional pricing a practical method to maximize the profit of the distribution system. By subtracting the classic objective function, which minimizes operational costs from revenue ...  Read More

Modified Pareto archived evolution strategy for the multi-skill project scheduling problem with generalized precedence relations

Amir Hossein Hosseinian; Vahid Bardaran

Volume 7, Issue 1 , June 2020, Pages 59-86

  In this research, we study the multi-skill resource-constrained project scheduling problem, where there are generalized precedence relations between project activities. Workforces are able to perform one or several skills, and their efficiency improves by repeating their skills. For this problem, a mathematical ...  Read More

Simulation based optimization of multi-product supply chain under a JIT system

Arman Sajedinejad; Erfan Hassannayebi; Mohammad Saviz Asadi Lari

Volume 7, Issue 1 , June 2020, Pages 87-106

   It is scientifically challenging to determine the inventory level all through the supply chain in such a way that the desired objectives such as effectiveness and responsiveness of the supply chain system can be obtained. Simulation is a means for solving various problems which cannot be solved ...  Read More

Three-stage mining metals supply chain coordination and air pollutant emission reduction with revenue sharing contract

Hamed Homaei; Iraj Mahdavi; Ali Tajdin

Volume 7, Issue 1 , June 2020, Pages 107-123

  One of the main concerns of all industries such as mine industries is to increase their profit and keep their customers through improving quality level of their products; but increasing the quality of products usually releases air pollutants. Nowadays the management of air pollutant emissions with harmful ...  Read More

Tactical and operational planning for socially responsible fresh agricultural supply chain

Ahmad Ali Abedinpour; Mohsen Yahyaei; Armin Jabbarzadeh

Volume 7, Issue 1 , June 2020, Pages 124-144

  Addressing an integrated decision-making structure for planting and harvesting scheduling may lead to more realistic, accurate, and efficient decision in fresh product supply chain. This study aims to develop an integrated bi-objective tactical and operational planning model for producing and distributing ...  Read More

Supply chain master planning considering material-financial flows

Faezeh Motevalli-Taher; Mohammad Mahdi Paydar

Volume 7, Issue 1 , June 2020, Pages 145-160

  In this study, tactical decisions considering the material and financial flows in a supply chain have been made. To achieve these aims and some effective solutions, a multi-objective mathematical model proposed for an integrated supply chain master planning problem. The multi-product, multi-period and ...  Read More

Simulation of fire stations resources considering the downtime of machines: A case study

Peiman Ghasemi; Abdollah babaeinesami

Volume 7, Issue 1 , June 2020, Pages 161-176

  Considering the increasing growth of cities, population and urban fabric density, it seems necessary that emergency facilities and services such as fire stations are positioned optimally so that they can fulfill the demands well. The aim of this study is the optimization of equipment use in the fire ...  Read More

Organization's performance measurement model based on the critical success factors of the reverse supply chain in airline industry with a quality gap approach

Nazila Adabavazeh; Mehrdad Nikbakht

Volume 7, Issue 1 , June 2020, Pages 177-190

  Airline industry is one of the main infrastructures for sustainable development of a country. The quality of the reverse support service will be effective in increasing the safety and health of the structures, reducing the impact of disasters and reducing costs. The aim of this study is to evaluate the ...  Read More

Simulated annealing and artificial immune system algorithms for cell formation with part family clustering

Iraj Mahdavi; Sara Firouzian; Mohammad Mahdi Paydar; Mahdi Saadat

Volume 7, Issue 1 , June 2020, Pages 191-219

  Cell formation problem (CFP) is one of the main problems in cellular manufacturing systems. Minimizing exceptional elements and voids is one of the common objectives in the CFP. The purpose of the present study is to propose a new model for cellular manufacturing systems to group parts and machines in ...  Read More

Multi-objective scheduling and assembly line balancing with resource constraint and cost uncertainty: A “box” set robust optimization

Javad Behnamian; Zeynab Rahami

Volume 7, Issue 1 , June 2020, Pages 220-232

  Assembly lines are flow-oriented production systems that are of great importance in the industrial production of standard, high-volume products and even more recently, they have become commonplace in producing low-volume custom products. The main goal of designers of these lines is to increase the efficiency ...  Read More