نتایج جستجو برای: saturated hydraulic conductivity neural network methods ann cokriging

تعداد نتایج: 2696701  

سهیلی, کیومرث, عباسپور, سحر, فلاحتی, علی, نظیفی, مینو,

Background & Objectives: Economic growth has been along with increasing energy demand in the world in addition environment pollutions which healthy life nowadays faces up with major challenges. Since there are several influential factors in this model, therefore this study designed to assess the effect of some independent socio-economic variables on the people health. Methods: An artificial ne...

ژورنال: محاسبات نرم 2016

Prediction of urban air pollution is an important subject in environmental studies. However, the required data for prediction is not available for every interested location. So, different models have been proposed for air pollution prediction. The feature selection (among 20 features given in Meteorology Organization data) was performed by binary gravitational search algorithm (BGSA) in this st...

Journal: :ecopersia 2014
mehdi vafakhah saeid janizadeh saeid khosrobeigi bozchaloei

in this study, several data-driven techniques including system identification, adaptive neuro-fuzzy inference system (anfis), artificial neural network (ann) and wavelet-artificial neural network (wavelet-ann) models were applied to model rainfall-runoff (rr) relationship. for this purpose, the daily stream flow time series of hydrometric station of hajighoshan on gorgan river and the daily rai...

Journal: :journal of biomedical physics and engineering 0
s. sina radiation research center, shiraz university, shiraz, iran. r. faghihi radiation research center, shiraz university, shiraz, iran a. s. meigooni nuclear engineering department, school of mechanical engineering, shiraz university, shiraz, iran.

background: the artificial neural networks (anns) are useful in solving nonlinear processes, without the need for mathematical models of the parameters. since the relationship between the ct numbers and material compositions is not linear, ann can be used for obtaining tissue density and composition. objective: the aim of this study is to utilize ann for determination of the composition and mas...

Journal: :journal of agricultural science and technology 2009
m.r. yazdani b. saghafian m. h. mahdian2 s. soltani

runoff estimation is one of the main challenges encountered in water and watershed management. spatial and temporal changes of factors which influence runoff due to het-erogeneity of the basins explain the complicacy of relations. artificial neural network (ann) is one of the intelligence techniques which is flexible and doesn’t call for any much physically complex processes. these networks can...

Journal: :Environmental science & technology 2009
Chuen-Fa Ni Tian-Chyi Jim Yeh Jui-Sheng Chent

This study shows how a cost-effective hydraulic tomography survey (HTS) and the associated data estimator can be used to characterize flow and transport in heterogeneous aquifers. The HTS is an improved field hydraulic test that accounts for responses of hydraulic stresses caused by pumping or injection events at different locations of an aquifer. A sequential data assimilation method based on ...

Journal: :international journal of industrial engineering and productional research- 0
yahia zare mehrjerdi department of ie tahereh aliheidary

job satisfaction (js) plays important role as a competitive advantage in organizations especially in helth industry. recruitment and retention of human resources are persistent problems associated with this field. most of the researchs have focused on the job satisfaction factors and few of researches have noticed about its effects on productivity. however, little researchs have focused on the ...

Background and Objectives: Rheological characteristics of dough are important for achieving useful information about raw-material quality, dough behavior during mechanical handling, and textural characteristics of products. Our purpose in the present research is to apply soft computation tools for predicting the rheological properties of dough out of simple measurable factors. Materials and Me...

Journal: :Land 2023

Functional data are being used increasingly in recent years and many environmental sciences, such as hydrology applied to agriculture. This means that the output, instead of a scalar variable represented by spatial map, is given function. Furthermore, site-specific management, there need delineate field into management areas depending on agricultural procedure scale application. In this paper, ...

ژورنال: سلامت و محیط زیست 2018

Background and Objective: Chromium is present in two oxidation forms of Cr(III) and Cr(VI). Cr(III) is less toxic than Cr(VI). The aim of this article was to optimize an artificial neural network structure in modeling the photocatalytic reduction of Cr(VI) by TiO2-P25 nanoparticles. Materials and Methods: In this work, an artificial neural network (ANN) for the modeling photocatalytic reductio...

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