Research Paper Operations Research
Maximum number of parts that can be accurately counted using a weighing scale

Chuck Extrand; Janet Hoskin; Martin Eeg

Volume 8, Issue 3 , September 2021, Pages 195-208

  Many factors may influence the accuracy of part count by weight, but one of the most ubiquitous and often overlooked causes is part variability. In this work, experiments were performed to quantify the weight variation of injection molded parts and to measure the maximum number of those parts that could ...  Read More

Research Paper Neural Networks
Designing novel LDO voltage regulator implementation on FPGA using neural network

Mahdieh Jahangiri; Ali Farrokhi; Amir Amirabadi

Volume 8, Issue 3 , September 2021, Pages 205-212

  This paper describes a new technique for implementing an Artificial Neural Network (ANN) using Field Programmable Gate Array (FPGA). The goal is design the Low Drop Output (LDO) voltage-regulator circuit with the desired features depending on the application. (The first novelty is designing an LDO with ...  Read More

Research Paper Engineering Optimization
Optimization of parameter settings to achieve improved moisture absorption properties of Bamboo fibre composites

Okwuchi Smith Onyekwere; Mobolaji Humphrey Oladeinde; Raphael Olumese Edokpia

Volume 8, Issue 3 , September 2021, Pages 213-235

  In composite production, hydrophilic nature of plant fibres results in poor interfacial adhesion between polar-hydrophilic fibre and non-polar-hydrophobic matrix and dimensional instability of the resulting product. Therefore, there is need to reduce the percentage of water absorption of natural fibres ...  Read More

Research Paper Decision analysis and methods
Neural network based human reliability analysis method in production systems

Rasoul Jamshidi; Mohammad Ebrahim Sadeghi

Volume 8, Issue 3 , September 2021, Pages 236-250

  Nowadays, many accidents, malfunctions, and quality defects are happening in production systems due to Human Errors Probability (HEP). Human Reliability Analysis (HRA) methods have been proposed to measure the HEP based on Performance Shaping Factors (PSFs), but these methods do not have a procedure ...  Read More

Review Paper Fuzzy optimization
Fully fuzzy transportation problems with pentagonal and hexagonal fuzzy numbers

Ladji Kane; Moctar Diakite; Souleymane Kane; Hawa Bado; Daouda Diawara

Volume 8, Issue 3 , September 2021, Pages 251-269

  The aim of this paper is to introduce a formulation of fully fuzzy transportation problems involving pentagonal and hexagonal fuzzy numbers for the transportation costs and values of supplies and demands.  We introduce new technique for improve methods for solving the fully fuzzy transportation ...  Read More

Research Paper Data Envelopment Analysis, DEA
Classifying flexible and integer data in two-stage network data envelopment analysis

Seyede Nasrin Hosseini Monfared; Farhad Hosseinzadeh Lotfi; Mohammad Reza Mozaffari; Mohsen Rostamy Malkhalifeh

Volume 8, Issue 3 , September 2021, Pages 270-289

  In conventional DEA models, it is supposed real-valued inputs and outputs while every measure must be determined as an input or output. However, in some cases, there are flexible measures which can only take integer values in two-stage network DEA. In all previous researches has not been mentioned the ...  Read More

Research Paper Operations Research
Modeling of the springback in folding using the experimental design method

Walid Meslameni; Chokri Ben Salem

Volume 8, Issue 3 , September 2021, Pages 290-308

  Bending is one of the most frequently used processes in the sheet metal products industry. The major users are mainly the automotive, aeronautics and electrical engineering industries. It is necessarily a cold forming operation of a flat material, with or without lubricant, obtained notably by exceeding ...  Read More