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eng Performance analysis of the partial use of a local optimization operator on the genetic algorithm for the Travelling Salesman Problem
Djordjevic, Milan; Grgurovič, Marko; Brodnik, Andrej
Business Systems Research Vol. 3, No. 1, 2012
Background: The Travelling Salesman Problem is an NP-hard problem in combinatorial optimization with a number of practical implications. There are many heuristic algorithms and exact methods for solving the problem. Objectives: In this paper we study the influence of hybridization of a genetic algorithm with a local optimizer on solving instances of the Travelling Salesman Problem. Methods/Approach: Our algorithm uses hybridization that occurs at various percentages of generations of a genetic algorithm. Moreover, we have also studied at which...
Hrčak ID: 86284


eng Optimal Configuration of Distributed Generation on Jeju Island Power Grid Using Genetic Algorithm: A Case Study
Huang, Rui; Wang, Yubo; Chu, Chi-Cheng; Gadh, Rajit; Song, Yu-jin
With the rapid development of wind turbine, photovoltaic and battery technologies, renewable energy resources such as wind and solar become the most common distributed generations (DG) that are being integrated into microgrids. One key impediment is to determine the sizes and placements of DGs within which the microgrid can achieve its maximum potential benefits. The objective of the paper is to study and propose an approach to find the optimal sizes and placements of DGs in a microgrid. The authors propose a comprehensive objective function wi...
Hrčak ID: 180038


eng Investigation into optimal fixturing cost of an assembly using genetic algorithm
Raj Kumar, Easwara Pillai; Annamalai, Krishnamoorthi
Engineering Review Vol. 34, No. 2, 2014
Due to the rapid response required in many manufacturing companies, the fixture design principles must be integrated and properly detailed so as to facilitate the fast design development of an optimization methods and various approaches used in fixture design problems are discussed in this paper. Then an Overview of applications of evolutionary algorithms to different domains os fixture design problems is given. The paper presents here the main features of genetic algorithm and its application in defining cost of an assembly fixture design.
Hrčak ID: 122373


eng Optimum Wire Busbar Design by Genetic Algorithm
Petranović, Davor; Marušić, Ante; Havelka, Juraj
Tehnički vjesnik Vol. 26, No. 1, 2019
This work shows genetic algorithm approach to the optimum wire busbar design. Parameters of the wire busbar are mapped into a chromosome like a string. This includes insulator string type, wire conductor type and number, bundle wire conductor distance, rigid spacer number, phase distance, wire conductor nominal stress, 3D truss L elements types and foundation type. GA uses natural selection on a population of such strings. The fitness function is the wire busbar price. GA performance is presented on one example with variation of input data – no...
Hrčak ID: 217102


eng District Heating Network Design and Configuration Optimization with Genetic Algorithm
Li, Hongwei; Svendsen, Sven
In this paper, the configuration of a district heating network which connects from the heating plant to the end users is optimized. Each end user in the network represents a building block. The connections between the heat generation plant and the end users are represented with mixed integer and the pipe friction and heat loss formulations are non-linear. In order to find the optimal district heating network configuration, genetic algorithm which handles the mixed integer nonlinear programming problem is chosen. The network configuration is rep...
Hrčak ID: 112479


eng Modelling and Optimization of the (R)-(+)-3,4-dihydroxyphenyllactic Acid Production Catalyzed with D-lactate Dehydrogenase from Lactobacillus leishmannii Using Genetic Algorithm
Findrik, Z.; Poljanac, M.; Vasić-Rački, Đ.
A mathematical model for the enzymatic kinetics of the synthesis of (R)–(+)–3,4-dihydroxyphenyllactic acid (DHPL) was developed. The synthesis was catalyzed by D-lactate dehydrogenase from Lactobacillus leishmannii. Since this enzyme requires NADH as a coenzyme, formate dehydrogenase system was used for NADH regeneration. Kinetic constants of both enzymes were estimated independently from initial reaction rate experiments. The developed mathematical model was verified by the batch reactor experiment (volumetric productivity in this experiment...
Hrčak ID: 3631


eng An Integrated Intelligent CAD/CAPP Platform: Part II - Operation Sequencing Based on Genetic Algorithm
Borojević, Stevo; Matić, Dragan; Dragić, Miroslav
Tehnički vjesnik Vol. 29, No. 5, 2022
We present a platform for integrated CAD/CAPP part design based on Elementary Machining Features (EMF) and intelligent approach for setup planning and operation sequencing based on a genetic algorithm through two papers. In this paper, as Part II of this platform, CAD/CAPP integration was realized via information from the enriched EMF, as well as production rules and a genetic algorithm. This is done for the purpose of the automated machining operation sequencing. Operation sequencing was conducted by using the improved genetic algorithm (GA).T...
Hrčak ID: 281685


eng FOOTBALL STADIUM FLOODLIGHT AIMING BY USING A GENETIC ALGORITHM WITH MULTI–STEP APPROACH
Petranović, Davor
Polytechnic and design Vol. 3, No. 2, 2015
Light designer’s task is to aim the football stadium floodlight to achieve the required levels of average horizontal and vertical illuminations, as well as their uniformity. At the same time the floodlight aiming for higher demand (for example official games lighting) must incorporate that some reflectors have a fixed aiming obtained by optimizing for lower demand (for example training). It is called the multi–step approach. In developing of the model and the program GAVRAS are used the mathematical package Matlab with its GA toolbox...
Hrčak ID: 194346


eng MODEL OF WORKING SHIP CROSSING CHANNEL
He, Zhang; Yuanyuan, Hao; Cheng, Xu; Luying, Qin
Brodogradnja Vol. 72, No. 1, 2021
An application method for working ship crossing safely is proposed to determine how to make navigation scheme at a certain time. This method makes it possible for decision makers to make reasonable judgments at different times. In this paper, the position relationship between working ship and navigation vessel in waterway is analysed by considering the ship size, hydrological conditions of waterway, ship arrival model and ship navigation trajectory. Using genetic algorithm, the operation scheme of keeping a safe distance between the working shi...
Hrčak ID: 256161


eng Genetic Algorithms as a Tool for Development of Balanced Curriculum 177
Gašpar, Dražena; Bijedić, Nina; Dedić, Fuad
The article presents research about the use of genetic algorithms in the analysis of the interrelation among curriculum courses in higher education. The authors used genetic algorithms as a method to analyse the influence that achieved grades in predictors’ courses have on achieved grades in dependent courses as well as to observe whether the genetic algorithms can contribute to improving the curriculum. The research was based on a set of data related to the success of students from the Faculty of Information Technologies at the University ‘Dže...
Hrčak ID: 255310