Computational Intelligence
Restricting shoulder surfing: a modified graphical password Technique

P. Pandey

Volume 8, Issue 4 , December 2019, , Pages 394-405

https://doi.org/10.22105/riej.2020.219732.1122

Abstract
  Graphical passwords are the ways in which user click on the image or user can select the image to authenticate themselves instead of giving passwords. This technique is more secure that textual password techniques. In this article, the shoulder surfing preventive mechanism of graphical password authentication ...  Read More

Scheduling
Modeling and Scheduling University Course Timetabling Problems

B. Naderi

Volume 5, 1(4) , November 2016, , Pages 1-15

https://doi.org/10.22105/riej.2017.49167

Abstract
  This paper considers the problem of university course timetabling. In this problem, there are a set of courses, lecturers and classrooms. The objective is to assign schedule courses so as to maximize the total preference of lecturer-course, lecturer-day and course-day. The paper first formulates the ...  Read More

Inventory, logistics, and transportation
Solving a Bi-Objective Transportation Vehicle Routing Problem for Waste Collection by a New Hybrid Algorithm

H. Farrokhi-Asl; R. Tavakkoli-Moghaddam

Volume 5, 1(4) , November 2016, , Pages 16-42

https://doi.org/10.22105/riej.2017.49168

Abstract
  This paper is an extension of the well-known vehicle routing problem (VRP) consisting of two stages. The first and second stages deal with the vehicle routing and transportation problems, respectively. Waste collection is one of the applications of the considered problem in a real world situation. A ...  Read More

Data Envelopment Analysis, DEA
The Methods of Ranking based Super Efficiency

M. Nayebi; F Hosseinzadeh Lotfi

Volume 5, 1(4) , November 2016, , Pages 43-66

https://doi.org/10.22105/riej.2017.49169

Abstract
  The science of Data Envelopment Analysis (DEA) evaluates the effectiveness of decision making units. But, one of the problems of Data Envelopment Analysis (DEA) is that, if the number of units with the same efficiency equal to one was more than one, then we couldn’t select the best between them. ...  Read More

Other
Application of total productive maintenance in service organization

A. Y. Ali

Volume 8, Issue 2 , June 2019, , Pages 176-186

https://doi.org/10.22105/riej.2019.170507.1076

Abstract
  This paper discusses the application of TPM in copy centre in Woldia University located in Woldia town, north wollo, Amhara region, Ethiopia. The problem encountered in the centre includes long waiting time due to frequent breakdown of equipment, unpleasant work environment, defective product etc. This ...  Read More

Human factors, ergonomics, and safety
Ergonomic furniture design for secondary girls school in Bangladesh

Md. Rahman; Md. Hasan; Ms. B. Datta

Volume 8, Issue 2 , June 2019, , Pages 187-202

https://doi.org/10.22105/riej.2019.183323.1086

Abstract
  This study has been carried out to evaluate the number of mismatches between secondary girl student’s anthropometry and existing furniture dimensions in Bangladesh. In this study, 375 students (girls) are in classes 6-10 in the age group between 10-15 years that have randomly selected from three ...  Read More

Probabilistic modelling
[0,1] Truncated Fréchet-Weibull and Fréchet Distributions

S. Abid; R. Abdulrazak

Volume 7, Issue 1 , April 2018, , Pages 106-135

https://doi.org/10.22105/riej.2018.100865.1020

Abstract
  In this paper, we introduce a new family of continuous distributions based on [0, 1] Truncated Fréchet distribution. [0, 1] Truncated Fréchet Weibull ([0, 1] ) and [0, 1] Truncated Fréchet ([0, 1] ) distributions are discussed as special cases. The cumulative distribution function, ...  Read More

Numerical Analysis
CAS Wavelet Function Method for Solving Abel Equations with Error Analysis

R. Ezzati; K. Maleknejad; E. Fathizadeh

Volume 6, Issue 4 , December 2017, , Pages 350-364

https://doi.org/10.22105/riej.2017.100538.1017

Abstract
  In this paper we use a computational method based on CAS wavelets for solving nonlinear fractional order Volterra integral equations. We solve particularly Abel equations. An operational matrix of fractional order integration for CAS wavelets is used. Block Pulse Functions (BPFs) and collocation method ...  Read More

Total quality management and quality engineering
Total quality management (TQM): Implementation in primary education system of Bangladesh

K. Hasan; Md. S. Islam; A. T. Shams; H. Gupta

Volume 7, Issue 3 , November 2018, , Pages 370-380

https://doi.org/10.22105/riej.2018.128170.1041

Abstract
  The role of primary education is to ensure the broad-based development of pupils. This means ensuring that all pupils are able to develop their cognitive, social, emotional, cultural, and physical skills to the best of their abilities and preparing them for their further school career. It is known that ...  Read More

Project Management
Integrated model of critical success factors of construction projects: A case of Esfahan

N. Janatyan; M. R. Hashemianfar; M. Kasaee

Volume 7, Issue 3 , November 2018, , Pages 381-395

https://doi.org/10.22105/riej.2018.143702.1053

Abstract
  Nowadays, the construction managers try to accomplish the projects on time and successful simultaneously. However, the concept of success is not clear in their mind. The purpose of this paper is to identify the factors that effect on project success in the construction field; so, an integrated model ...  Read More

Industrial Management
Implementation of Six Sigma DMAIC methodology for increasing the competitiveness of SMEs in Ethiopia

A. Y. Ali

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

https://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

Human factors, ergonomics, and safety
Selecting methodology for developing emergency preparedness and response framework of an NPP accident

Muhammed Mufazzal Hossen; Mahmud Hossain; K. M. Jalal Uddin Rumi

Volume 11, Issue 1 , March 2022, , Pages 1-8

https://doi.org/10.22105/riej.2022.314603.1264

Abstract
  The Emergency Preparedness and Response (EPR) framework to a radiological emergency in a Nuclear Power Plant (NPP) accident should be developed systematically and efficiently by applying an appropriate methodology. A systematic approach is applied in this study to select the appropriate method from different ...  Read More

Engineering Optimization
New Course in Industrial Engineering Education Curriculum

Prabhakar V Deshpande

Volume 12, Issue 1 , March 2023, , Pages 1-6

https://doi.org/10.22105/riej.2023.370508.1349

Abstract
  Industrial Engineering degree curriculum has many courses - Supply Chain Management, Production Planning and so on. However there is need to introduce new course in Industrial Engineering degree curriculum - Creative Industrial Engineering. This course will be designed by Industrial Engineering teachers ...  Read More

Business Analytics
Identifying and ranking the effective financial factors on rural entrepreneurial small businesses

Parvaneh Gelard; Khosro Farahi; Hamid Tohidi

Volume 13, Issue 1 , March 2024, , Pages 1-10

https://doi.org/10.22105/riej.2024.333363.1304

Abstract
  Rural entrepreneurship is one of the most important goals of policy-makers to develop villages and prevent migration from rural to urban areas. Significant challenges at the rural entrepreneurship level have reduced the entrepreneurship development process. Recognizing these challenges can be constructive ...  Read More

Engineering Optimization
Production Scheduling of Parallel Identical Lines in a Multi-Product Manufacturing System with Genetic Algorithm

Mohammad Hossein Sattarkhan

Volume 12, Issue 1 , March 2023, , Pages 7-20

https://doi.org/10.22105/riej.2022.335596.1306

Abstract
  A multi-product system is one of the different types of manufacturing systems, in which a large number of products are produced that complement each other and have interdependence. These types of systems have recently been widely used in various industries. In some types of multi-product manufacturing ...  Read More

Computational Intelligence
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 , March 2021, , Pages 9-21

https://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

Data mining
PyIT-MLFS: a Python-based information theoretical multi-label feature selection library

Sadegh Eskandari

Volume 11, Issue 1 , March 2022, , Pages 9-15

https://doi.org/10.22105/riej.2022.308916.1252

Abstract
  Multi-label learning is an emerging research direction that deals with data in which an instance may belong to multiple class labels simultaneously. As many multi-label data contain very large feature space with hundreds of irrelevant andredundant features, multi-label feature selection is a fundamental ...  Read More

Mathematical modelling
A mathematical model of the location problem for central and secondary warehouses in the multi-level supply chain network of perishable products

Seyyed Mostafa Mousavi; Majid Motamedi; Rasoul Karimi

Volume 13, Issue 1 , March 2024, , Pages 11-24

https://doi.org/10.22105/riej.2024.394527.1378

Abstract
  A supply chain is a network that creates and delivers products and services to customers. In this research, the four-level supply chain in the field of food products, including the levels of supplier, customer, and central and secondary warehouses, has been investigated. A mixed integer mathematical ...  Read More

Facility location, layout, design, and materials handling
Assessing the location of relief centers using a combination of multi-criteria decision-making methods and gis (case study: district 18 of tehran)

Davood Darvishi; Hassan Ahmadi Choukolaei; Soheil Shafaee

Volume 11, Issue 1 , March 2022, , Pages 16-29

https://doi.org/10.22105/riej.2022.291197.1228

Abstract
  All governments especially those having a high risk of natural disasters must have a comprehensive and implementable plan. In Iran, the placement of relief centers for the injured is usually done experimentally by relief organizations without considering the necessary standards. In this research, according ...  Read More

Engineering Optimization
A mathematical model for robust landing and take-off scheduling at an airport considering runway disturbances

Parviz Tohidi Nasab; Mohsen Vaez Ghasemi; Ghasem Tohidi

Volume 12, Issue 1 , March 2023, , Pages 21-42

https://doi.org/10.22105/riej.2022.322212.1275

Abstract
  The Aircraft Scheduling Problem (ASP) refers to allocating each aircraft to the optimal take-off and landing time and the appropriate runway. This problem is the allocation of aircraft to the desired runway so that the total damage due to delays or haste in landing or take-off of all aircraft is minimized. ...  Read More

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

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

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

https://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

Computational modelling
Development of a lean maturity assessment model using interval-valued spherical fuzzy AHP method

Alper Kiraz; Asiye Yücedag Gürel

Volume 13, Issue 1 , March 2024, , Pages 25-47

https://doi.org/10.22105/riej.2023.424690.1403

Abstract
  Continuously adding value to a company's products and services is inevitable in adapting to this evolving and challenging global market. That is why lean philosophy is becoming increasingly important and popular among companies, and they are relying more and more on it. It not only assists in increasing ...  Read More

Decision analysis and methods
Designing a model for creating an organization with high reliability, case study: Iran space research institute

Aminullah Teymouri; Hasan Amiri; Somayeh Qajari; Farzaneh Beigzadeh

Volume 11, Issue 1 , March 2022, , Pages 30-49

https://doi.org/10.22105/riej.2022.318781.1269

Abstract
  Given the challenges and global uncertainties in the business’s, the use of futurism to improve management in space research center in Iran has become very important. Hence, space sector needs continuous futurology improvement in its systems and processes to obtain higher levels of reliability. ...  Read More

Inventory, logistics, and transportation
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 , March 2021, , Pages 35-45

https://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

Computational Intelligence
Prediction of Stress Concentration Factor in Butt Welding Joints using Artificial Neural Networks

Alper Kiraz; Enes Furkan Erkan; Onur Canpolat; Onur Kökümer

Volume 12, Issue 1 , March 2023, , Pages 43-52

https://doi.org/10.22105/riej.2023.349647.1322

Abstract
  In welded constructions, there should be no defects in the welding seams, or defects should have in an acceptable range for obtaining more reliable welding operations. An undercut is one of the most important welding defects occurring on the workpieces produced by butt welding. Determining the correct ...  Read More