Research Paper Industrial Management
1. Implementation of Six Sigma DMAIC methodology for increasing the competitiveness of SMEs in Ethiopia

A. Y. Ali

Volume 10, Issue 1 , Winter 2021, Pages 1-8

http://dx.doi.org/10.22105/riej.2021.266497.1183

Abstract
  Six Sigma has gained wide acceptance as an improvement methodology to enhance the organization competitiveness in market. For SMEs building a competitive advantage is a difficult task. Changes in the economic environment affect the way such entities perceive factors which could help them not only survive ...  Read More

Research Paper Computational Intelligence
2. Frontal and non-frontal face detection using deep neural networks (DNN)

N. Prasad; B. Rajpal; K. K. R. Mangalore; R. Shastri; N. Pradeep

Volume 10, Issue 1 , Winter 2021, Pages 9-21

http://dx.doi.org/10.22105/riej.2021.264744.1177

Abstract
  Face recognition has always been one of the most searched and popular applications of object detection, starting from the early seventies. Facial recognition is used for access control, authentication, fraud detection, surveillance, and by individuals to unlock their devices. The less intrusive and robustness ...  Read More

Research Paper Inventory, logistics, and transportation
3. A conceptual framework of green smart IoT-based supply chain management

H. Nozari; M. Fallah; A. Szmelter-Jarosz

Volume 10, Issue 1 , Winter 2021, Pages 22-34

http://dx.doi.org/10.22105/riej.2021.274859.1189

Abstract
  The green smart supply chain is a phenomenon that has emerged as a result of the development of sustainable and smart business and information technology trends. Sustainable and green supply chains are an innovative phenomenon that uses information technology to improve the quality of activities in operating ...  Read More

Research Paper Inventory, logistics, and transportation
4. Customers' satisfaction with the level of service in Murtala Muhammad International Airport (MMIA), Lagos, Nigeria

U. G. Chike; M. S. Stephens

Volume 10, Issue 1 , Winter 2021, Pages 35-45

http://dx.doi.org/10.22105/riej.2021.263588.1174

Abstract
  The aim of this study is to examine customers’ satisfaction with the level of service in Murtala Muhammed International Airport (MMIA), Lagos, Nigeria; so as to identify the service attributes requiring managerial attention in the airport. The study evaluated twenty eight service attributes in ...  Read More

Research Paper Scheduling
5. Applying flexible job shop scheduling in patients management to optimize processing time in hospitals.

N. MD. Sarfaraj; Md. L. R. Lingkon; N. Zahan

Volume 10, Issue 1 , Winter 2021, Pages 46-55

http://dx.doi.org/10.22105/riej.2021.260145.1158

Abstract
  The continuous growth of the population causes an increased demand for our healthcare services. Insufficient hospitals face challenges to serve the patient within a preferable duration. Long lines in front of counters increase the processing time of a patient. From the entry to the completion, plenty ...  Read More

Research Paper Industrial Management
6. Presentation and implementation multi-objective mathematical models to balance the assembly line

E. Shadkam; F. Ghavidel

Volume 10, Issue 1 , Winter 2021, Pages 56-66

http://dx.doi.org/10.22105/riej.2021.269298.1184

Abstract
  The use of assembly lines is one of the important approaches in mass production of industrial products. Imbalance of assembly lines increases cycle time and idle times, resulting in reduced production rates, line efficiency, and increased system costs, which ultimately lead to low productivity. A hybrid ...  Read More

Research Paper Engineering Optimization
7. Data envelopment analysis for estimate efficiency and ranking operating rooms: a case study

Sh. Ghasemi; A. Aghsami; M. Rabbani

Volume 10, Issue 1 , Winter 2021, Pages 67-86

http://dx.doi.org/10.22105/riej.2021.247705.1143

Abstract
  Data Envelopment Analysis (DEA) is one of the non-parametric methods for evaluating each unit's efficiency. Limited resources in the healthcare system are the main reason for measuring the efficiency of hospitals. Because Operating Rooms (OR) are the most vital part of any hospital, we determine the ...  Read More