Operations Research
Modelling and Optimization of Residential Electricity Load under Stochastic Demand [REVISED]

KIZITO PAUL MUBIRU

Articles in Press, Accepted Manuscript, Available Online from 30 December 2023

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

Inventory, logistics, and transportation
A new efficient genetic algorithm-Taguchi-based approach for multi-period inventory routing problem

Amin Farahbakhsh; Amir Saman Kheirkhah

Volume 12, Issue 4 , December 2023, , Pages 397-413

https://doi.org/10.22105/riej.2023.403685.1387

Abstract
  The inventory routing problem arises from the combination of the vehicle routing problem and the vendor-managed inventory problem. In this paper, we present a mathematical model and a novel genetic algorithm for solving the multi-period inventory routing problem. The objective is to supply products to ...  Read More

Parametric Optimization (GMAW) for the improvement of Mild Steel weld strength using Response Surface Technique

Silas Oseme Okuma; Martins Ufuoma Eki; John Damilola Oluwafemi; Chukwuekum Orumgbe

Volume 11, Issue 4 , December 2022, , Pages 390-398

https://doi.org/10.22105/riej.2022.360225.1332

Abstract
  The most desired strength value in any welding process is an excellent Ultimate Tensile Strength (UTS) of the weld in respect to the parent metal. Welding process parameters should be monitored and reviewed on a continuous basis due to the increased demand for structural and industrial materials with ...  Read More

Engineering Optimization
Fabrication and process parameter optimization of a 3d printer using response surface methodology

Fatin Ishraq; Rumaisa Ahmed; Joytun Nisa Joti

Volume 10, Issue 3 , September 2021, , Pages 238-250

https://doi.org/10.22105/riej.2021.297700.1238

Abstract
  3D printing or additive manufacturing is a technology in which 3D objects are printed by depositing a thin layer of material layer-by-layer until a final product is produced. In this research work, it has been focused on the fabrication of a Portable 3D Printer for the manufacturing of sample parts by ...  Read More

Total quality management and quality engineering
Simultaneous optimization of quantitative and ordinal responses using Taguchi method

S. Pal; S. Gauri

Volume 7, Issue 2 , September 2018, , Pages 184-205

https://doi.org/10.22105/riej.2018.127858.1039

Abstract
  In the real world, the overall quality of a product is often represented partly by the measured values of some quantitative variables and partly by the observed values of some ordinal variables. The settings for the manufacturing processes of such products are required to be optimized considering the ...  Read More

Engineering Optimization
Reviewing on Nanotechnology for Creating Antimicrobial for Chicken Feed: Max-Min Optimization Approach

A. H. Niknamfar; H. Esmaeili

Volume 6, Issue 4 , December 2017, , Pages 312-327

https://doi.org/10.22105/riej.2017.100933.1021

Abstract
  Nanotechnology deals with studies of phenomena and manipulation on elements of matter at the atomic, molecular and macromolecular level (rangefrom1to100nm), where the properties of matter are significantly different from properties at larger scales of dimensions. Nanotechnology is science, engineering, ...  Read More

Supply chain management
A Multi-Objective Model for Location-Allocation Problem in a Supply Chain

F. Mokhtari karchegani; H. Shirouyehzad; R. Tavakkoli-Moghaddam

Volume 4, 1(4) , November 2015, , Pages 24-42

https://doi.org/10.22105/riej.2017.49155

Abstract
  The fast changing and dynamic global business environment require companies to plan their entire supply chain from the raw material supplier to the end customer. In this paper, we design an integrated supply chain including multiple suppliers, multiple factories, multiple distributors, multiple customers, ...  Read More

Optimal Design of PM Synchronous Generator for Aerial Industries Power Supply Using Cuckoo Algorithm

A. Nikbakhsh; S. A. Gholamian; S. M. Hoseini

Volume 3, Issue 3 , September 2014, , Pages 49-68

Abstract
  The Generators used in aerial industries should have the characteristics such as high efficiency, power density and reliability, low weight and volume. Among different generators, permanent magnet synchronous generator adequately satisfied these requirements. In this paper, first the dimensions and other ...  Read More

Comprehensive Method to Determine Real Option Utilizing Probability Distribution

M. Modarres Yazdi; M. Shafiei; S.M. Sahihi Oskooyi

Volume 3, Issue 1 , May 2014, , Pages 11-25

Abstract
  Data envelopment analysis (DEA) is a non-parametric analytical methodology widely used in efficiency measurement of decision making units (DMUs). Conventionally, after identifying the efficient frontier, each DMU is compared to this frontier and classified as efficient or inefficient. This thesis introduces ...  Read More