نتایج جستجو برای: عددی ga

تعداد نتایج: 57251  

Journal: :energy equipment and systems 2014
mojtaba tahani tahmine sokhansefat kiana rahmani pouria ahmadi

wind power has been widely considered and utilized in recent years as one of the most promising renewable energy sources. in the current research study, aerodynamic analysis of the upwind three-bladed horizontal axis turbine is carried out using blade element momentum theory (bem), and a genetic algorithm (ga) is applied as an optimization method. output power generation is considered as an obj...

Journal: :pollution 2015
ziba hosseini mohammad nakhaie

in this paper, we present an application of evolved neural networks using a real coded genetic algorithm for simulations of monthly groundwater levels in a coastal aquifer located in the shabestar plain, iran. after initializing the model with groundwater elevations observed at a given time, the developed hybrid genetic algorithm-back propagation (ga-bp) should be able to reproduce groundwater ...

2003
Christoph Adelmann Julien Brault Guido Mula Bruno Daudin Jörg Neugebauer

We study the adsorption behavior of Ga on ~0001! GaN surfaces combining experimental specular reflection high-energy electron diffraction with theoretical investigations in the framework of a kinetic model for adsorption and ab initio calculations of energy parameters. Based on the experimental results we find that for substrate temperatures and Ga fluxes typically used in molecular-beam epitax...

Journal: :Journal of the Japan Institute of Metals and Materials 2000

Journal: :IEEJ Transactions on Electronics, Information and Systems 1999

Journal: :Sykepleien 2014

Journal: :Plant physiology 1980
J D Metzger J A Zeevaart

This communication describes the distribution of gibberellins (GAs) in roots and shoots of spinach in relation to photoperiod. From previous work (Metzger, Zeevaart 1980 Plant Physiol 65: 623-626) shoots were known to contain GA(53), GA(44), GA(19), GA(17), GA(20), and GA(29). We now show by combined gas chromatography-mass spectrometry that roots contain GA(44), GA(19), and GA(29). Trace amoun...

Journal: :Tree physiology 2008
Lisheng Kong Suzanne R Abrams Stacey J Owen Hilary Graham Patrick von Aderkas

Changes in plant hormones and metabolites in long-shoot stems of interior Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) during cone induction by gibberellic acid (GA) treatment were analyzed by high performance liquid chromatography-electrospray ionization tandem mass spectrometry in multiple reaction monitoring mode. A mixture of GA(4) and GA(7), including small amounts of G...

2010
Xingjun Wang Yuttapoom Puttisong C. W. Tu Aaron J. Ptak V. K. Kalevich L. Geelhaar H. Riechert Weimin Chen Irina Buyanova X. J. Wang Y. Puttisong A. Yu. Egorov W. M. Chen I. A. Buyanova

2007
SADAF SAJJAD SAJJAD MOHSIN

In the present research we study the codebook generation problem of vector quantization, using two different techniques of Genetic Algorithm (GA). We compared the Simple GA (SGA) method and Ordain GA (OGA) method in vector quantization. SGA with roulette and tournament selection with elitist approach is used in the experiments. The OGA is based on the pair wise nearest neighbour method (PNN). B...

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