Research Paper Supply chain management
1. The study of multi-objective supplier selection problem by a novel hybrid method: COA/ε-Constraint

Elham Shadkam; Mahdi Parvizi; Reza Rajabi

Articles in Press, Accepted Manuscript, Available Online from 29 June 2021

http://dx.doi.org/10.22105/riej.2021.277170.1191

Abstract
  Today, paying attention to the interests of suppliers in supply chain management strategies is one of the important points in the success of long-term and strategic relationships with suppliers. Not paying enough attention to these points sometimes causes irreparable damage to the overall structure of ...  Read More

Research Paper Mathematical modelling
2. Some Results on (c)-mapping

Linxin Li; Fengqiong Wang; Wu Dingping

Articles in Press, Accepted Manuscript, Available Online from 04 September 2021

http://dx.doi.org/10.22105/riej.2021.293334.1232

Abstract
  Compared with [1], in this paper, We will give first some sufficient conditions under which a (c)-mapping possesses an approximate fixed point sequence (AFPS). And then, we will prove that (c)-mapping has a fixed point. Finally, we will check some special properties of the fixed point sets of these mappings, ...  Read More

Research Paper Reliability and Quality Engineering
3. Analyzing the Impact of 5S Implementation in the Manufacturing Department: A Case Study

Tasnim Ahmed Tahasin; Himadri Sen Gupta; Noshin Tasnim Tuli

Articles in Press, Accepted Manuscript, Available Online from 18 September 2021

http://dx.doi.org/10.22105/riej.2021.229039.1230

Abstract
  5S is a systematic approach that helps to organize a workplace for increasing efficiency and reduce wasting of productivity by providing an organized safe environment. The objective of this paper is to emphasize the implementation of 5S principles for the workplace by reflecting a tooling problem of ...  Read More

Research Paper Supply chain management
4. Optimization of a Green Supply Chain Network: A Case Study in a Pharmaceutical Industry.

Umme Habiba; B.M. Atiur Rahman Ripon; MD. Tanzil Islam

Articles in Press, Accepted Manuscript, Available Online from 22 September 2021

http://dx.doi.org/10.22105/riej.2021.297117.1236

Abstract
  Green supply chain management is defined as the integration of environmental thinking into supply-chain management, including product design, material sourcing and selection, manufacturing processes and procurement. Generally, the sustainable supply chain is built on three dimensions: social, economic, ...  Read More

Research Paper Data mining
5. Customer segmentation to identify key customers based on RFM model by using data mining techniques

Farahnaz Ahang; Abdolmajid Imani; Meysam Abbasi; Hassan ghaffari; Mohamad Mehdi

Articles in Press, Accepted Manuscript, Available Online from 06 October 2021

http://dx.doi.org/10.22105/riej.2021.291738.1229

Abstract
  The main goal of this research is to identify key or strategic customers using the RFM model. In this part after determining the amount of RFM (recency, frequency, and monetary) in, registered transactions of one store in Iran (Refah Chain Store) at a time about seven months from 23 September 2017 to ...  Read More

Research Paper Engineering Optimization
6. Fabrication and Process Parameter Optimization of A 3D Printer Using Response Surface Methodology

Fatin Ishraq; Rumaisa Ahmed; Joytun Nisa Joti

Articles in Press, Accepted Manuscript, Available Online from 10 October 2021

http://dx.doi.org/10.22105/riej.2021.297700.1238

Abstract
  3D printing or additive manufacturing is a technology in which 3D objects are printed by depositing a thin layer of material layer-by-layer until a final product is produced. In this research work, it has been focused on the fabrication of a Portable 3D Printer for the manufacturing of sample parts by ...  Read More