نتایج جستجو برای: the error percentage

تعداد نتایج: 16073124  

Journal: :journal of agricultural science and technology 2009
m. r. mostofi

a project was established to develop a procedure for the selection, design, installation, test and evaluation of mass-flow rate measurement systems for root crop harvesting and to assess the consistency and precision of the weighing systems incorporated into crop feed arrangements in both laboratory and field studies. studies were conducted to evaluate conveyor belt weighing systems using an ex...

This paper presents the prediction of vehicle's velocity time series using neural networks. For this purpose, driving data is firstly collected in real world traffic conditions in the city of Tehran using advance vehicle location devices installed on private cars. A multi-layer perceptron network is then designed for driving time series forecasting. In addition, the results of this study are co...

Journal: :Physical Review (Series I) 1907

The optimum design of solar energy systems strongly depends on the accuracy of  solar radiation data. However, the availability of accurate solar radiation data is undermined by the high cost of measuring equipment or non-functional ones. This study developed a feed-forward backpropagation artificial neural network model for prediction of global solar radiation in Makurdi, Nigeria (7.7322  N lo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - پژوهشکده ریاضیات 1392

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پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1391

in this project, 4,4?-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) as a diacid, was prepared by the reaction of trimellitic anhydride (tma) with 4,4?-methylenebis(3-chloro-2,6-diethylaniline) (mcdea). the novel poly(amide-imide) (pai) was synthesized from the reaction of 4,4?-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) as a diacid with mcdea under green condition using ...

ژورنال: علوم آب و خاک 2013
علی رحیمی‌خوب, , محمد امین مرادی, ,

Reference evapotranspiration (ET0) is a necessary parameter for calculating crop water requirements and irrigation scheduling. In this study, a method was presented as ET0 is estimated with NOAA satellite imagery in the irrigation network. In this method, a pixel from a set of pixels within the irrigation network was chosen with the highest vegetation index, and its surface temperature (Ts) wit...

Journal: :مهندسی بیوسیستم ایران 0
محمدحسین سعیدی راد مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی سودابه عین افشار مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی سعید ظریف نشاط مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی صمد نظرزاده اوغاز مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی

one way to increase the shelf life of agriculture products is using of controlled atmosphere storages. in order to obtain the controlled gas components, an equipped cold store with cooling system and atmosphere controller system designed and constructed. the injection of co2, o2 and n2 were controlled automatically into the store by programable logic control (plc). the store was a laboratory re...

Journal: :The Journal of bone and joint surgery. British volume 2004
S Faraj W G Atherton N S Stott

Reimers' hip migration percentage is commonly used to document the extent of subluxation of the hip in children with spasticity. In this study, two measurers, with six months paediatric orthopaedic experience, measured the migration percentage on 44 pelvic radiographs of children with cerebral palsy, aged between two and eight years. Unknown to the measurers, each radiograph was duplicated, giv...

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