نتایج جستجو برای: due dates completion time genetic algorithm ga

تعداد نتایج: 3659140  

Journal: :Math. Program. 1998
Cynthia A. Phillips Clifford Stein Joel Wein

A natural and basic problem in scheduling theory is to provide good average quality of service to a stream of jobs that arrive over time. In this paper we consider the problem of scheduling n jobs that are released over time in order to minimize the average completion time of the set of jobs. In contrast to the problem of minimizing average completion time when all jobs are available at time 0,...

Supply chain management (SCM) is a subject that has found so much attention among different commercial and industrial organizations due to competing environment of products. Therefore, integration of constituent element of this chain is a great deal. This paper proposes a multi objective production-allocation and distribution planning problem (PADPP) in a multi echelon supply chain network. We ...

Journal: :Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2016
A T Papageorghiou B Kemp W Stones E O Ohuma S H Kennedy M Purwar L J Salomon D G Altman J A Noble E Bertino M G Gravett R Pang L Cheikh Ismail F C Barros A Lambert Y A Jaffer C G Victora Z A Bhutta J Villar

OBJECTIVE Accurate gestational-age (GA) estimation, preferably by ultrasound measurement of fetal crown-rump length before 14 weeks' gestation, is an important component of high-quality antenatal care. The objective of this study was to determine how GA can best be estimated by fetal ultrasound for women who present for the first time late in pregnancy with uncertain or unknown menstrual dates....

Journal: :Journal of Advanced Transportation 2022

Due to continuous urban sprawl, large-scale bus network design has become a major challenge in transport planning. The increase population and scale makes the factors considered route increasingly complex. Contemporary public transportation problems are based more on efficiency goals such as accessibility comfort of network, which increases difficulty analyzing problem. Bus is not only an NP-ha...

Journal: :international journal of environmental research 2011
d.k. kim k.s. jeong r.i.b. mckay t.s. chon g.j. joo

in the regulated nakdong river, algal proliferations are annually observed in some seasons, with cyanobacteria (microcystis aeruginosa) appearing in summer and diatom blooms (stephanodiscus hantzschii) in winter. this study aims to develop two ecological models forecasting future chlorophyll a at two time-steps (one-week and one-year forecasts), using recurrent neural networks tuned by genetic...

Journal: :journal of industrial engineering, international 2011
e mehdizadeh r tavakkoli-moghaddam

in this paper, a genetic algorithm is presented for an identical parallel-machine scheduling problem with family setup time that minimizes the total weighted flow time ( ). no set-up is necessary between jobs belonging to the same family. a set-up must be scheduled when switching from the processing of family i jobs to those of another family j, i  j, the duration of this set-up being the sequ...

ژورنال: Journal of Railway Research 2017
Nasr, Asghar, Khadem Hoseini Gohardani, Narges , Mirabadi, Ahmad , Mostaghim, Pedram , Yousefi, Shahin ,

One of the strategies for reduction of energy consumption in railway systems is to execute efficient driving by presenting optimized speed profile considering running time, energy consumption and practical constraints. In this paper, by using real route data, an approach based on combination of Genetic and Particle swarm (GA-PSO) algorithms in order to optimize the fuel consumption is provided....

A. Farmany H. Noorizadeh

Genetic algorithm and partial least square (GA-PLS), the kernel PLS (KPLS) and Levenberg-Marquardt artificial neural network (L-M ANN) techniques were used to investigate the correlationbetween retention time (RT) and descriptors for 15 nanoparticle compounds which obtained by thecomprehensive two dimensional gas chromatography system (GC x GC). Application of thedodecanethiol monolayer-protect...

2013
Smita Jhajharia Swati Mishra Siddharth Bali

This paper proposes an algorithm for Public Key Cryptography (PKC) using the hybrid concept of two evolutionary algorithms, Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) respectively. PSO alone are fast and easy to implement, they follow the procedures of common evolutionary algorithm and posses memory feature which is absent in GA making it more valuable. In GA whole population ...

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