Scheduling
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 , March 2021, , Pages 46-55

https://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

Operations Research
Modelling and optimization of residential electricity load under stochastic demand

Kizito Paul Mubiru; Maureen Nalubowa Ssempijja

Volume 13, Issue 1 , March 2024, , Pages 48-61

https://doi.org/10.22105/riej.2023.422577.1401

Abstract
  The paper considers a modelling framework for a set of households in residential areas using electricity as a form of energy for domestic consumption. Considering the demand and availability of units for electricity consumption, optimal decisions for electricity load allocation are paramount to sustain ...  Read More

Banking industry
Developing a content marketing model with goal to improve brand of countrywide the banking industriestitle

Keivan Goodarzi; Mohammadreza Kashefi Neishabori; Abdollah Naami; Mojtaba Dastoori

Volume 11, Issue 1 , March 2022, , Pages 50-61

https://doi.org/10.22105/riej.2021.305326.1247

Abstract
  The current research has been done pursuing the goal to present a content marketing model with brand improving approach in banking industries. This study is applied in terms of goal and survey- exploratory concerning the approach. The statistical community is made up of a group of experts including the ...  Read More

Data Envelopment Analysis, DEA
Identification and evaluation of congestion in two-stage network data envelopment analysis

Sarvar Sadat Kassaei; Farhad Hosseinzadeh Lotfi; Alireza Amirteimoori; Mohsen Rostamy-Malkhalifeh; Bijan Rahmani

Volume 12, Issue 1 , March 2023, , Pages 53-72

https://doi.org/10.22105/riej.2023.326879.1294

Abstract
  Congestion is one of the important concepts in data envelopment analysis that occurs when excessive inputs reduce the maximally possible outputs. Identification and elimination of congestion have a significant impact on reducing inputs along with increasing outputs. Hence, various studies have been conducted ...  Read More

Industrial Management
Presentation and implementation multi-objective mathematical models to balance the assembly line

E. Shadkam; F. Ghavidel

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

https://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

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

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

Volume 11, Issue 1 , March 2022, , Pages 62-76

https://doi.org/10.22105/riej.2021.291738.1229

Abstract
  Accurate identification, attracting, and keeping the customers particularly loyal Customer Relationship Management (CRM) with the goal of optimum allotment of resources and achievement to higher profit is not a competitive profit, but it is a life persistence necessity of companies in virtual space. ...  Read More

Operations Research
Toward characterizing solutions to complex programming problems involving fuzzy parameters in constraints

Hamiden Abd El-Wahed Khalifa; Dragan Pamučar; Seyyed Ahmad Edalatpanah

Volume 13, Issue 1 , March 2024, , Pages 62-70

https://doi.org/10.22105/riej.2024.447897.1427

Abstract
  The current study investigates to characterize the Complex Programming Problem (CPP) solution in a fuzzy environment. The paper is divided into two parts: 1) the first presents a Fuzzy Complex Programming Problem (F-CPP) with fuzzy complex constraints, and 2) the second presents the optimality criteria ...  Read More

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

Sh. Ghasemi; A. Aghsami; M. Rabbani

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

https://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

Machine Learning
The joint policy of production, maintenance, and product quality in a multi-machine production system by reinforcement learning and agent-based modeling

Mohammad Reza Nazabadi; Seyed Esmaeil Najafi; Ali Mohaghar; Farzad Movahedi Sobhani

Volume 13, Issue 1 , March 2024, , Pages 71-87

https://doi.org/10.22105/riej.2023.298557.1240

Abstract
  Adopting an integrated production, maintenance, and quality policy in production systems is of great importance due to their interconnected influence. Consequently, investigating these aspects in isolation may yield an infeasible solution. This paper aims to address the joint optimal policy of production, ...  Read More

Supply chain management
Designing a hybrid model for the green supply chain in Gilan Steel Industry

Sirous Balaei; Nabiollah Mohammadi; Homa Doroudi

Volume 12, Issue 1 , March 2023, , Pages 73-87

https://doi.org/10.22105/riej.2022.298634.1327

Abstract
  Due to the importance of environmental effects of manufacturing system in recent decades, the production systems are obliged to comply different environmental regulations. The present research, aims to design a green supply chain model for Guilan steel industry with a hybrid approach. This study is applied ...  Read More

Data mining
Data mining and diagnosis of heart diseases: a hybrid approach to the b-mine algorithm and association rules

Shookoofa Mostofi; Sohrab Kordrostami; Amir Hossein Refahi; Marzieh Faridi Masooleh; Soheil Shokri

Volume 11, Issue 1 , March 2022, , Pages 77-91

https://doi.org/10.22105/riej.2022.302672.1243

Abstract
  Existing systems for diagnosing heart disease are time consuming, expensive, and prone to error. In this regard, a diagnostic algorithm has been proposed for the causes of heart disease based on a frequent pattern with the B-mine algorithm optimized by association rules. Initially, a data set of disease ...  Read More

Supply chain management
Information system model for educational management in supply chain for Thai higher education institutions

Artaphon Chansamut

Volume 10, Issue 2 , June 2021, , Pages 87-94

https://doi.org/10.22105/riej.2021.285518.1225

Abstract
  The research about information system model for educational management in supply chain for Thai higher education institutions. The objectives of research to design and to assess the suitability of an information system model for educational management in supply chain for Thai higher education institutions. ...  Read More

Case studies in industry and services
Identifying and prioritizing technology capability drivers in the supply chain using the fuzzy hierarchical analysis process (Case study: Iran Khodro and Saipa Automotive Company)

Ali Ehsani; Hassan Mehrmanesh; Mahmoud Mohammadi

Volume 12, Issue 1 , March 2023, , Pages 88-105

https://doi.org/10.22105/riej.2022.332012.1301

Abstract
  This study aims to identify and prioritize the effect of technology capability drivers on the supply chain performance of automotive companies. Technology capability indicators are ranked and prioritized using the fuzzy hierarchical analysis technique. The research method is applied in terms of purpose, ...  Read More

Machine Learning
Leveraging deep feature learning for handwriting biometric authentication

Parvaneh Afzali; Abdoreza Rezapour; Ahmad Rezaee Jordehi

Volume 13, Issue 1 , March 2024, , Pages 88-103

https://doi.org/10.22105/riej.2024.432510.1412

Abstract
  The authentication of writers through handwritten text stands as a biometric technique with considerable practical importance in the field of document forensics and literary history. The verification process involves a meticulous examination of the questioned handwriting in comparison to the genuine ...  Read More

Industrial Mathematics
Influence of missmatch-induced stress and porosity of materials on technological process

Evgeny L. Pankratov

Volume 11, Issue 2 , June 2022, , Pages 92-118

https://doi.org/10.22105/riej.2022.323547.1279

Abstract
  In this paper we introduce an approach to increase density of field-effect transistors framework a C-multiplier. Framework the approach we consider manufacturing the inverter in heterostructure with specific configuration. Several required areas of the heterostructure should be doped by diffusion or ...  Read More

Game theory
Modeling of the supply chain of cooperative game between two tiers of retailer and manufacturer under conditions of uncertainty

Javid Ghahremani Nahr; Mirreza Zahedi

Volume 10, Issue 2 , June 2021, , Pages 95-116

https://doi.org/10.22105/riej.2021.276520.1190

Abstract
  The design of a repurchase agreement related to the amount of goods remaining in the two-echelon supply chain between the retailer and the manufacturer is examined. Two scenarios are considered quite separately; In the first scenario (decentralized) in which the retailer determines the price of the product ...  Read More

Manufacturing and Logistics
A new model for balancing between asset sharing risk and responsiveness: developing the augmented ɛ-constraint method

Hamid Saffari; Morteza Abbasi; Jafar Gheidar-Kheljani

Volume 12, Issue 2 , June 2023, , Pages 106-128

https://doi.org/10.22105/riej.2023.362292.1338

Abstract
  In recent years, responsiveness in the Supply Chain Network (SCN) has been considered to improve competitiveness because customers are the most significant part of a supply chain, and promptly meeting customer demand is substantial. In this article, to deal with the technological risks, the Reinforcement ...  Read More

Human factors, ergonomics, and safety
Optimal value determination for a shape changeable furniture design parameters using full factorial design of experiment analysis

Mobasshira Zaman

Volume 10, Issue 2 , June 2021, , Pages 117-127

https://doi.org/10.22105/riej.2021.286958.1226

Abstract
  Optimization and selecting effective design parameters are a big issue in the field of product design and development. The optimal value determination for design parameters is a challenge for the furniture industry. Therefore, an appropriate statistical approach is required. In this research the full ...  Read More

Operations Research
A numerical investigation on the springback in air v-bending of aluminum 1050 A

Chokri Ben Salem; Walid Meslameni

Volume 11, Issue 2 , June 2022, , Pages 119-133

https://doi.org/10.22105/riej.2022.337535.1308

Abstract
  Bending is a sheet forming operation in excess of the elasticity limit of the material. Currently, in the industry, bending operation is carried out by a successive test method in order to have the geometry of the part, which generates the operation quite long and too expensive. In fact, springback brings ...  Read More

Data Envelopment Analysis, DEA
A new model to measuring efficiency and returns to scale on data envelopment analysis

Abbasali Monzeli; Behrouz Daneshian; Gasem Tohidi; Shabnam Razavian; Masud Sanei

Volume 10, Issue 2 , June 2021, , Pages 128-137

https://doi.org/10.22105/riej.2021.272673.1186

Abstract
  We extend the concept of returns to scale in Data Envelopment Analysis (DEA) to the weight restriction environments. By adding weight restrictions, the status of returns to scale, i.e. increasing, constant, and decreasing, may need a change. We first define "returns to scale" underweight restrictions ...  Read More

Total quality management and quality engineering
Measurement of service quality and customer satisfaction in the SME industry: literature study

Supriyati Supriyati; Tri Ngudi Wiyatno

Volume 12, Issue 2 , June 2023, , Pages 129-142

https://doi.org/10.22105/riej.2023.349835.1323

Abstract
  SMEs is one of the pillars that can improve people's lives and is very meaningful for the government. In order for SMEs to continue to develop, even increase, it is necessary to measure service quality and customer satisfaction so that SMEs can identify weaknesses in their business as evaluation material. ...  Read More

Management Sciences
Development of the field of organizational performance during the industry 4.0 period

Buşra Taşkan; Buket Karatop

Volume 11, Issue 2 , June 2022, , Pages 134-154

https://doi.org/10.22105/riej.2022.324520.1286

Abstract
  As well as social and cultural life, commercial life has also been affected by the industrial revolutions. Because the structures of enterprises have changed how their performance is evaluated, have indispensably changed. In today's brutally competitive environment, it is of great importance that enterprises ...  Read More

Decision analysis and methods
Development of a multi-period multi-attribute group decision-making method using type- 2 fuzzy set of linguistic variables

Ali Dehghani Filabadi; Gholamreza Hesamian

Volume 10, Issue 2 , June 2021, , Pages 138-154

https://doi.org/10.22105/riej.2021.272821.1187

Abstract
  Recently, fuzzy linguistic variables have gained a great deal of attention from researchers in many decision-making problems. In this problems, type-2 fuzzy sets have been used to better cover linguistic data uncertainty. However, many of research works in this regard have been performed in type-2 fuzzy ...  Read More

Design of Mechanical and Thermal Systems
Thermodynamic analysis of hybrid-nanofluids-zeotropic mixtures in a vapour compression refrigeration system (VCRS) based on exergy principles

Aniekan Essienubong Ikpe; Ekpenyong Akanimo Udofia; Emmanuel Odeh

Volume 12, Issue 2 , June 2023, , Pages 143-154

https://doi.org/10.22105/riej.2023.383806.1365

Abstract
  Cooling refrigeration systems ingest prime energy and contribute to universal negative impact due to ecologically unfavorable working fluids used. Hence, the quest to improve the performance of Vapour Compression Refrigeration System (VCRS) with more efficient and eco-friendly refrigerant such as nanoparticles ...  Read More

Decision analysis and methods
Greedy algorithm for solving student allocation problem in internship program: a case study

Abdella Yimam Ali

Volume 10, Issue 2 , June 2021, , Pages 155-164

https://doi.org/10.22105/riej.2021.266125.1179

Abstract
  This paper presented greedy algorithm for solving student allocation problem that has arisen in internship program. In internship program, engineering students stay one semester in industries which are located across the country and teachers visit students once/twice for supervision during the program. ...  Read More