نتایج جستجو برای: mean standard deviation model
تعداد نتایج: 2949002 فیلتر نتایج به سال:
Asymptotically Unbiased Estimation of Mean and Standard Deviation in the Presence of Outlying Errors
Background and aims The HCS standard includes listing of chemicals, labeling of chemical containers, preparation of material safety data sheets, writing plan and employee training programs. The aim of this study was to determine the influence of implemented program to enhance the knowledge and safety performance level of employees. Methods The knowledge level and unsafe act ratio were...
Wavelet analysis is one of the useful techniques in mathematics which is used much in statistics science recently. In this paper, in addition to introduce the wavelet transformation, the wavelet threshold estimation of semiparametric regression model with correlated errors with having Gaussian distribution is determined and the convergence ratio of estimator computed. To evaluate the wavelet th...
Introduction: The spread of corona virus and its psychological consequences is one of the most important human social events in the 21 century. Sailors are vulnerable to the virus and they have severe psychological consequences. Therefore, the aim of this study was to predict Covid-19 anxiety based on coping strategies and emotion regulation in Iranian sailors. Methods and Materials: The prese...
OBJECTIVES Linear growth impairment frequently accompanies chronic kidney disease in children. Despite successful renal transplant, growth retardation may persist in renal allograft recipients. MATERIALS AND METHODS We recorded the longitudinal growth and biochemical data of prepubertal children during the first 2 years after renal transplant in 34 children (18 boys [52.9%]; mean age at renal...
خصوصیات بتن تولید شده توسط تغییر در خصوصیات مصالح تشکیل دهنده بتن دستخوش تغییر می گردد،تغییراتی مثل: 1):کیفیت سیمان 2):نسبت آب به سیمان واقعی: که با به حساب نیاوردن وجود آب اضافی در سنگدانه ها یا فقدان آن این نسبت را دستخوش نوسان می نماید. 3):خصوصیات سنگدانه که به ابعاد زیر مربوط میگردند: الف):کیفیت سنگدانه ب):شکل سنگدانه ج):دانه بندی سنگدانه مقاومت مورد محاسبه در طرح اختلاط ، مقاومت متو...
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