نتایج جستجو برای: absolute error

تعداد نتایج: 331591  

ژورنال: علوم آب و خاک 2012
عطاا... شیرزادی, , پرویز فتحی, , کامران چپی, ,

Estimation of flood hydrograph is of necessities in hydrological studies such as flood mitigation projects. This estimation in un-gauged watersheds is usually taken place using geomorphological characteristics of watersheds. The objective of this research is to estimate synthetic unit hydrograph using regional flood frequency analysis and geomorphological parameters of watersheds. 1-hour and 2-...

Aim and background: Forecasting methods are used in various fields; one of the most important fields is the field of health systems. This study aimed to use the Artificial Neural Network (ANN) method in forecasting Corona patients in Iran. Method: The present study is descriptive and analytical of a comparative type that uses past information to predict the future, the time series of Corona in...

احمدی, امیر, رئوفی, زینب, صراف زاده, جواد, معروفی, نادر,

Background and purpose: Proprioception is one of the somatic senses which is used by the nervous system for muscular control. Inappropriate posture or pain could result in impaired proprioception. One of these poor postures is forward head posture (FHP). The aim of this study was to investigate cervical repositioning error in FHP subjects with and without neck pain and normal individuals. Ma...

پرهمت, جهانگیر, کاظمی, رحیم,

Estimating the runoff coefficient that is influenced by morphometric, geologic and hydro climatologically factors are the most important issues in hydrology and information of its role in the planning and management of water resources is more important. In this research, twenty hydrometric stations with common period from 1974 to 1999were selected. Physiographic parameters of the catchments fro...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
G Strömberg

The problem of finding the distributione according to absolute magnitudes of a group of stars is one of considerable importance. .Except for the.case in which all the stars in the group are at approximately the same distance, the problem can usually be solved only by making certain assumptions as to the nature of the distribution function, either of the absolute magnitudes, or of the accidental...

Journal: :IEEE Communications Letters 2021

We revisit the Karagiannidis-Lioumpas (KL) approximation of Q-function by optimizing its coefficients in terms absolute error, relative error and total error. For minimizing maximum absolute/relative we describe targeted uniform functions sets nonlinear equations so that optimized are solutions thereof. The is minimized with numerical search. also introduce an extra coefficient KL to achieve si...

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