h-index: 7     i10-index: 5

Engineering
Evaluating the Effect of Span Length on the Seismic Performance of a Steel Structure with a Chevron Brace by Finite Element Method

Masoud Mahdavi; Seyyed Reza Hosseini; Abbas Babaafjaei

Articles in Press, Accepted Manuscript, Available Online from 06 March 2024

https://doi.org/10.48309/ejst.2024.435101.1122

Abstract
  The seismic performance of a steel structure depends on various factors, such as the design, materials, and dimensions. One important aspect to consider is the span length of the structure, which can influence the seismic response and the overall performance of the structure. In this study, a 10-story ...  Read More

Engineering
A DTF and Molecular thermodynamic Simulation on the Adsorption Inhibition of Cytarabine a Nucleotides as a Potential Inhibitor on the Alumnium Metal Surface

Fater Iorhuna; Abdullahi Muhammad Ayuba; Thomas Aondofa Nyijime; Hussein Muhammmedjamiu

Volume 3, Issue 4 , October 2023, , Pages 211-222

https://doi.org/10.48309/ejst.2023.410063.1084

Abstract
  In this study, the substance was theoretically examined using computational techniques to provide more analysis on the cytarabine inhibition on the aluminum surface. Through DFT and molecular dynamic simulations, the quantum chemical approach was used to study the parameters. Al (110) surface was chosen ...  Read More

Engineering
Challenges of Energy Carrier Consumption Management in Iran

Marzieh Samimi

Volume 2, Issue 4 , October 2022, , Pages 236-245

https://doi.org/10.22034/EJST.2022.3.2

Abstract
  Energy carriers as one of the important inputs of production as well as consumer goods of households, play a very important role in determining production costs and household expenditures. Price fluctuations in each of these carriers will cause fluctuations in production costs, consumer spending, and ...  Read More

Challenges of Energy Carrier Consumption Management in Iran


Engineering
Knowledge Management in Commercial Companies

Mohadeseh Aliakbari

Volume 2, Issue 4 , October 2022, , Pages 261-281

https://doi.org/10.22034/ejst.2022.3.5

Abstract
  In this study, knowledge management in commercial companies has been studied. In an age where knowledge determines the power and wealth of societies, knowledge management and transfer has become the most important task of societies and organizations within them. Organizations that effectively acquire, ...  Read More

Knowledge Management in Commercial Companies


Engineering
Concept of Organizational Knowledge in Industrial and Commercial Companies

Mohadeseh Aliakbari

Volume 2, Issue 3 , July 2022, , Pages 190-204

https://doi.org/10.22034/EJST.2022.2.8

Abstract
  This study examines the definition of organizational knowledge in industrial and commercial companies. Knowledge in an organization is knowing the reality or situation of something, however awareness and understanding that have been obtained through experience, study, exploration and mental communication ...  Read More

Concept of Organizational Knowledge in Industrial and Commercial Companies


Engineering
Schizophrenia: Mechanisms and Neurotransmitters

Ali Rezaei

Volume 2, Issue 3 , July 2022, , Pages 205-217

https://doi.org/10.22034/EJST.2022.2.9

Abstract
  Schizophrenia has existed throughout history, as ancient Greek physicians have described it with different symptoms, but it was not seriously studied until the second half of the nineteenth century, and from the second half of the nineteenth century the classifications related to Schizophrenia developed, ...  Read More

Schizophrenia: Mechanisms and Neurotransmitters


Engineering
A Review of Studies on Organizational Excellence

Mohammad Ranjbarian

Volume 2, Issue 1 , January 2022, , Pages 46-54

https://doi.org/10.22034/EJST.2022.1.4

Abstract
  The model of excellence of the organization is the most extensive tool of self-evaluation in the world and is the basis for designing national awards in various countries, including Iran. Numerous studies have shown that the use of management evaluation models such as excellence model has a positive ...  Read More

A Review of Studies on Organizational Excellence


Engineering
Investigation and Analysis of Fungi causing Cutaneous Infections in Fish Farms in Eastern Mazandaran Province

Seyed Aliakbar Saadpour

Volume 2, Issue 1 , January 2022, , Pages 55-62

https://doi.org/10.22034/EJST.2022.1.5

Abstract
  The genus Saprolegnia is one of the most important pathogenic aquatic fungi in farmed and wild fish. In this paper, 100 samples were prepared from 10 fish ponds in Sari, Neka and Behshahr. After cultivation, purification and macroscopic and microscopic examinations, we were able to isolate the fungi ...  Read More

Investigation and Analysis of Fungi causing Cutaneous Infections in Fish Farms in Eastern Mazandaran Province


Engineering
Risk Allocation in Design Contracts, Supply of Goods and Drilling of Exploratory Wells and How to Manage Them

Peyman Vaziri

Volume 1, Issue 4 , August 2021, , Pages 211-217

https://doi.org/10.48309/EJST.2021.287601.1034

Abstract
  Design, supply and drilling (EPD) contracts, referred to in the downstream industry as turnkey contracts, are new contracts in the drilling industry that can be attractive to both employer and contractor. In this type of contracts, the design, supply of equipment and goods, as well as drilling wells ...  Read More

Risk Allocation in Design Contracts, Supply of Goods and Drilling of Exploratory Wells and How to Manage Them


Engineering
Evaluation of Corona Charge Positive and Negative Impulses on Polymeric Surfaces and Simulation of Impact Rate

Ebadollah Amouzad Mahdiraji

Volume 1, Issue 4 , August 2021, , Pages 223-230

https://doi.org/10.48309/EJST.2021.289237.1038

Abstract
  Corona electric discharge phenomenon occurs when the electric field intensity exceeds the corona threshold. In the analysis of this paper, three types of hypotheses of partial charge (electrons, positive ions, negative ions) generated in the air due to corona electrical discharge are considered. The ...  Read More

Evaluation of Corona Charge Positive and Negative Impulses on Polymeric Surfaces and Simulation of Impact Rate


Engineering
Evaluation and Selection of Construction Industry Contractors as an Optimal Model from the Perspective of Health, Safety and Environment

Reza Kolbadinezhad; Ebadollah Amouzad Mahdiraji

Volume 1, Issue 3 , June 2021, , Pages 120-130

https://doi.org/10.48309/EJST.2021.285446.1021

Abstract
  Due to the accelerated trend of transferring most of the activities to contracting companies, the rate of indicators related to occupational accidents has grown alarmingly and has led to the discussion of evaluating and selecting construction contractors in terms of health. Safety and the environment ...  Read More

Evaluation and Selection of Construction Industry Contractors as an Optimal Model from the Perspective of Health, Safety and Environment


Engineering
Effects of Establishing Occupational Health and Safety Management Standards and Environmental Management on Environmental Factors and Employee Satisfaction

Ebadollah Amouzad Mahdiraji; Reza Kolbadinezhad

Volume 1, Issue 3 , June 2021, , Pages 131-138

https://doi.org/10.48309/EJST.2021.285451.1022

Abstract
  This study aimed to investigate the status of the establishment of occupational safety and health management system and environmental management system on environmental factors and employee satisfaction. This paper was a quasi-experimental study of before and after type that was conducted in 2012 in ...  Read More

Effects of Establishing Occupational Health and Safety Management Standards and Environmental Management on Environmental Factors and Employee Satisfaction


Engineering
Contractual form of Design, Supply and Drilling 1 (EPD) and Its Comparison in Terms of Contractual and Technical Risks with Other Common Contracts in Drilling Exploratory Wells

Peyman Vaziri

Volume 1, Issue 3 , June 2021, , Pages 169-183

https://doi.org/10.48309/EJST.2021.287599.1033

Abstract
  Still, one of the most basic and often overlooked questions is about contract risk planning. If the scope, technical implications or requirements of a contract are not clear, everything will be opaque. This risk is for the buyer because it was paid for what was not due and for the seller may lead to ...  Read More

Contractual form of Design, Supply and Drilling 1 (EPD) and Its Comparison in Terms of Contractual and Technical Risks with Other Common Contracts in Drilling Exploratory Wells


Engineering
Investigating the Relationship between Technology Competencies and Quality Management in Bank Branches

Komeil Amouzad Mahdiraji; Somayeh Amouzad Khalili

Volume 1, Issue 3 , June 2021, , Pages 184-194

https://doi.org/10.48309/EJST.2021.287164.1029

Abstract
  The purpose of this article is to investigate the relationship between IT competence and quality management in Melli Bank branches in Behshahr. The research method is applied according to the purpose and according to the data collection is descriptive and survey type. The statistical population of the ...  Read More

Investigating the Relationship between Technology Competencies and Quality Management in Bank Branches


Engineering
Proposing the Optimal Price of Distributed Generation Sources with the Aim of Increasing Profits Using the ALO algorithm

Andi Brous

Volume 1, Issue 2 , May 2021, , Pages 54-60

https://doi.org/10.48309/ejst.2021.283991.1011

Abstract
  Distribution of distributed generation resources in distribution systems has several advantages, including reducing losses, improving voltage profiles, reducing pollution, and increasing system reliability. However, one of the most important points regarding the placement of these resources in distribution ...  Read More

Proposing the Optimal Price of Distributed Generation Sources with the Aim of Increasing Profits Using the ALO algorithm


Engineering
Inhalation Exposure to Dust Pollution in the Workplace

Reza Kolbadinezhad; Ebadollah Amouzad Mahdiraji

Volume 1, Issue 2 , May 2021, , Pages 61-68

https://doi.org/10.48309/ejst.2021.285211.1018

Abstract
  Exposure to dust in the air is one of the most common environmental hazards in workshops that can have devastating effects on health. In this study, workers' exposure to particles in inhaled air by conventional methods as well as GIS has been investigated. The research was performed cross-sectionally-analytically ...  Read More

Inhalation Exposure to Dust Pollution in the Workplace


Engineering
Adaptive Control of Network Frequency by Doubly-Fed Induction Generators Using a Data-Driven Method

Ebadollah Amouzad Mahdiraji; Mojtaba Sedghi Amiri

Volume 1, Issue 2 , May 2021, , Pages 75-91

https://doi.org/10.48309/ejst.2021.130260

Abstract
  Nowadays, to involve wind turbines in controlling the network frequency, drop and inertia control methods are usually used for variable speed wind turbines. Adjusting the benefits of droop and inertia control loops is very effective on the performance of wind turbines, but due to the variability of wind ...  Read More

Adaptive Control of Network Frequency by Doubly-Fed Induction Generators Using a Data-Driven Method


Engineering
Improve the Transient Stability of the Power Network Using STATCOM

Sergey Brindred; Minoo Akhtarian Zand

Volume 1, Issue 2 , May 2021, , Pages 92-99

https://doi.org/10.48309/ejst.2021.130266

Abstract
  The stability of the power system is essential to ensure its proper functioning. In recent years, Flexible AC Transmission Systems have been considered as one of the effective methods to improve the control ability of the power system and power transition constraints. One of the devices of the parallel ...  Read More

Improve the Transient Stability of the Power Network Using STATCOM


Engineering
Effects of Fourier Transform and Modal Theory on Cable Fault Location

Mojtaba Sedghi Amiri; Ebadollah Amouzad Mahdiraji

Volume 1, Issue 1 , April 2021, , Pages 11-19

https://doi.org/10.48309/ejst.2021.130258

Abstract
  One of the most commonly used equipment in the power system, which is exposed to various types of faults for various reasons, is high and low voltage pressure cables. Due to the fact that cables, either power or distribution cables are mostly transported from underground, despite their further reliability ...  Read More

Effects of Fourier Transform and Modal Theory on Cable Fault Location


Engineering
Manufacture of Modified Protective Coating Derived from Coal Industry

Amin Ahmadpour; Alireza Bozorgian

Volume 1, Issue 1 , April 2021, , Pages 28-36

https://doi.org/10.48309/ejst.2021.284979.1013

Abstract
  In this work, coal residue (pitch) was used to produce an inexpensive protective coating. The residue is primarily rehabitated for just to be suitable for use as a coating material (reference coat) by dissolving it in benzene in a ratio of Pitch/Solvent (P/S) = 3:1 by weight. The reference coating was ...  Read More

Manufacture of Modified Protective Coating Derived from Coal Industry


Engineering
Improving the Transient Stability of a Synchronous Generator by Using Braking Resistance to Increase the Critical Clearing Fault Time

Ebadollah Amouzad Mahdiraji

Volume 1, Issue 1 , April 2021, , Pages 37-45

https://doi.org/10.48309/ejst.2021.285385.1019

Abstract
  In general, the stability of the power system can be considered a feature of the system that enables it to remain in equilibrium under normal conditions and regain a different acceptable state if affected by disturbance. Instability in a power system may take many forms, depending on the composition ...  Read More

Improving the Transient Stability of a Synchronous Generator by Using Braking Resistance to Increase the Critical Clearing Fault Time


Engineering
Time-Based Development Plans on a 17-Bus Radial Distribution Network with Genetic Enhanced Algorithm

Negin Shiri; Kamal Malmal

Volume 1, Issue 1 , April 2021, , Pages 46-53

https://doi.org/10.48309/ejst.2021.284437.1012

Abstract
  In this paper, a time-based model for distribution network development planning is proposed, considering the possibility of using distributed electricity generation technologies and the existence of capacitor banks. The proposed model specifies the location, capacity, and timing of the use of distributed ...  Read More

Time-Based Development Plans on a 17-Bus Radial Distribution Network with Genetic Enhanced Algorithm