نتایج جستجو برای: model calibration

تعداد نتایج: 2143890  

2008
Shufang Tian Jianping Chen Ming Jiang

Radiometric calibration is the basis of both hyperspectral data applications and quantitative remote sensing. While at present, there is no good and suitable method for radiometric calibration in the aerospace hyperspectral data. The paper uses the highest spectral resolution Hyperion EO-1 satellite data in current world Spaceflight sensor as information source, using a variety of calibration m...

Journal: :اکو هیدرولوژی 0
مجید محمدی استادیار گروه مرتع و آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه سمنان، سمنان، ایران حسین زینی وند استادیار گروه مهندسی مرتع و آبخیزداری، دانشکدۀ کشاورزی، دانشگاه لرستان حمیدرضا مرادی دانشیار گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، مازندران، نور حمیدرضا پورقاسمی استادیار گروه مهندسی منابع طبیعی و محیط زیست، دانشکدۀ کشاورزی، دانشگاه شیراز، شیراز، ایران حسن فرازجو مدیر دفتر مطالعات پایۀ شرکت آب منطقه‏ای گلستان

the main objective of this research was assessing the effects of land use on runoff parameters such as total runoff, surface runoff and peak discharges at the baghsalian watershed as a case study site. at first, land use maps of 1986 and 2012 were prepared using a synthetic method and landsat images. wetspa model was applied to simulate daily runoff for 8 years (the first 5 years as calibration...

Quantitative structure-activity relationship (QSAR) analysis has been carried out with a series of 107 anti-HIV HEPT compounds with antiviral activity, which was performed by chemometrics methods. Bi-dimensional images were used to calculate some pixels and multivariate image analysis was applied to QSAR modelling of the anti-HIV potential of HEPT analogues by means of multivariate calibration,...

  The estimation of the correct amount of suspended sediment has an important role in the optimal design of water structures, erosion studies and water quality studies. The sediment rating curve (SRC) is a conventional and well-known regression model. However, due to logarithmic transformations in calibrating this model, its estimated values ​​are often less than actual values. In the present s...

ژورنال: تحقیقات موتور 2018

Today, employing model based design approach in powertrain development is being paid more attention. Precise, meanwhile fast to run models are required for applying model based techniques in powertrain control design and engine calibration. In this paper, an in-cylinder process model of a CVVT gasoline engine is developed to be employed in extended mean valve control oriented model and also mod...

Quantitative structure-activity relationship (QSAR) analysis has been carried out with a series of 107 anti-HIV HEPT compounds with antiviral activity, which was performed by chemometrics methods. Bi-dimensional images were used to calculate some pixels and multivariate image analysis was applied to QSAR modelling of the anti-HIV potential of HEPT analogues by means of multivariate calibration,...

Journal: :IEEE Transactions on Neural Networks 2001

Journal: :تحقیقات آب و خاک ایران 0
ابراهیم وطن خواه پردیس کشاورزی و منابع طبیعی دانشگاه تهران حامد ابراهیمیان عضو هیئت علمی گروه مهندسی آبیاری و آبادانی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

the growth and development of crop models such as aquacrop model is the most important tools for decision-making and predicting crop yields. the aim of this research was to assess aquacrop model for simulating spatial variability of forage maize yield along the furrow. four treatments for calibration and validation of the model were investigated based on the percentage of supplied crop water re...

Journal: :مهندسی زراعی 0
نسرین زلکی بدیلی دانش آموخته کارشناسی ارشد خاکشناسی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز غلامعباس صیاد استادیار گروه خاکشناسی، دانشکده کشاورزی، دانشگاه دانشگاه شهید چمران اهواز کاظم حمادی عضو هیئت علمی سازمان آب و برق استان خوزستان سمیرا اخوان استادیار گروه علوم آب، دانشکده کشاورزی، دانشگاه بوعلی سینا همدان علی عبدی کارشناس ارشد خاکشناسی، گروه خاکشناسی، دانشکده مهندسی کشاورزی، دانشگاه رازی کرمانشاه

in iran, most mountainous watersheds do not have enough hydrometery stations and defective stations have sparse data. because of limited availability of hydrologic data, watershed modeling plays a crucial role in development of local resources. in this study, swat was applied to simulate runoff in marun dam (idanak) watershed, a sub-basin of marun catchment. calibration and sensivity analyses w...

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