نتایج جستجو برای: error of measurement

تعداد نتایج: 21197770  

خلیلی, داود, محرابی, یداله, مسعودی, سیما, یاوری, پروین,

In epidemiologic studies, the measurement of characteristics of interest is almost always subject to random measurement error. This error and its effects are usually overlooked by researchers. One of its effects is a widespread statistical phenomenon that is well known as regression to the mean. This phenomenon occurs whenever an extreme group of people is selected from a population based on th...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1980

Journal: :International Statistical Review / Revue Internationale de Statistique 1995

Journal: :دانش و پژوهش در آموزش زبان انگلیسی 0
نرجس غفورنیا narjes ghafournia اکبر افقری akbar afghari

abstract this study scrutinized the interaction between linguistic and strategic variables in reading comprehension test performance of iranian efl learners. to this end, the interaction among the participants’ reading comprehension test performance, use of test-taking strategies, and level of language proficiency was analyzed. the participants comprised 286 students who answered a reading comp...

Azar Hosseini Fatemi Mohammad Ali Shams Saeedeh Shamsaee

The aim of this study is to investigate Iranian TEFL graduates’ conception of measurement error in research. Adopting a sequential explanatory multi-method strategy (Borg, 2009), the researchers analyzed causal and temporal relations in the research narratives elicited from 30 TEFL graduates. Gee’s (1986) framework for identifying narrative discourse units (lines, stanzas, and episodes) was ado...

Journal: :Journal of Econometrics 1985

Journal: :journal of advances in computer research 2015
mohammad reza mosavi hodeis nabavi

this paper presents an accurate differential global positioning system (dgps) using multi-layered neural networks (nns) based on the back propagation (bp) and imperialistic competition algorithm (ica) in order to predict the dgps corrections for accurate positioning. simulation results allowed us to optimize the nn performance in term of residual mean square error. we compare results obtained b...

Journal: :amirkabir international journal of modeling, identification, simulation & control 2014
mohammad amin tajeddini ali kamali

coriolis mass flow meters are one of the most accurate tools to measure the mass flow in the industry. however, two-phase mode (gas-liquid) may cause severe operating difficulties as well as decreasing certitude in measurement. this paper presents a method based on fuzzy systems to correct the error and improve the reliability of these sensors in the presence of two-phase model fluid. definite ...

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