نتایج جستجو برای: absolute error

تعداد نتایج: 331591  

Gas-condensate reservoirs contain hydrocarbon fluids with characteristics between oil and gas reservoirs and a high gas-liquid ratio. Due to the large gas-liquid ratio, wellhead choke calculations using the empirical equations such as Gilbert may contain considerable error. In this study, using drill stem test (DST) data of a gas-condensate reservoir, coefficients of Gilbert equation was modifi...

Journal: :Journal of the American Statistical Association 2010

M. Haji, M. Pendar

‎This paper has two aims. The first is forecasting inflation in Iran using Macroeconomic variables data in Iran (Inflation rate, liquidity, GDP, prices of imported goods and exchange rates) , and the second is comparing the performance of forecasting vector auto regression (VAR), Bayesian Vector-Autoregressive (BVAR), GARCH, time series and neural network models by which Iran's inflation is for...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود - دانشکده کشاورزی 1392

اندازه گیری رطوبت حجمی خاک و آب قابل دسترس برای گیاهان در رشته های مختلف مانند خاکشناسی، هیدرولوژی و مهندسی آب بسیار مهم است. بنابراین بررسی متعدد رطوبت خاک و میزان قابل استفاده آن برای گیاه از مهم ترین موضوعات در علم رابطه آب، خاک وگیاه است. برای تعیین رطوبت از روش های مختلفی مانند روش مستقیم (روش وزنی) و روش های غیر مستقیم مانند استفاده از دستگاه tdr و شبکه های هوش مصنوعی مانند شبکه عصبی، فاز...

Journal: :رشد و یادگیری حرکتی - ورزشی 0
اسماعیل نصیری استادیار گروه تربیت بدنی دانشگاه شاهد تهران، ایران احمد فرخی دانشیار دانشکدۀ تربیت بدنی دانشگاه تهران، تهران، ایران فضل الله باقرزاده دانشیار دانشکدۀ تربیت بدنی دانشگاه تهران، تهران، ایران

the purpose of the present study was to examine the effects of self – control modeling , that is presenting moded to learner whenever they asked for it, on learning a timing task.twenty four right handed subjects (12 males, 12 females, aged 19-20) voluntarily participated in the study and were assigned randomly to two groups of self – control and yoked.the task was pressing the keys number 1, 4...

Journal: :Journal of the American Statistical Association 2010
Kani Chen Shaojun Guo Yuanyuan Lin Zhiliang Ying

Multiplicative regression model or accelerated failure time model, which becomes linear regression model after logarithmic transformation, is useful in analyzing data with positive responses, such as stock prices or life times, that are particularly common in economic/financial or biomedical studies. Least squares or least absolute deviation are among the most widely used criterions in statisti...

ژورنال: کومش 2021

Introduction: The aim of this study was to investigate the immediate effect of open and closed kinematic chain exercises on the elbow joint proprioception in healthy teen-female volleyball players. Materials and Methods: Forty-five teen-female volleyball players participated in this study. They were randomly divided into three groups: open-kinematic chain (OKC), closed kinematic chain (CKC), an...

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