نتایج جستجو برای: روش t test

تعداد نتایج: 1770947  

Journal: :The Plant cell 2015
Siobhan M Brady Meike Burow Wolfgang Busch Örjan Carlborg Katherine J Denby Jane Glazebrook Eric S Hamilton Stacey L Harmer Elizabeth S Haswell Julin N Maloof Nathan M Springer Daniel J Kliebenstein

Plant biology is rapidly entering an era where we have the ability to conduct intricate studies that investigate how a plant interacts with the entirety of its environment. This requires complex, large studies to measure how plant genotypes simultaneously interact with a diverse array of environmental stimuli. Successful interpretation of the results from these studies requires us to transition...

2018
Wasana Hongkan Rajin Arora Roungtiva Muenpa Parinya Chamnan

Objectives To examine the perception of educational environment among clinical year students in Thailand using Dundee ready education environment measure (DREEM) and identify factors associated with the DREEM scores. Methods A total of 2,467 fourth- to sixth-year students from 34 teaching hospitals nationwide responded to a Thai version of DREEM questionnaire. Data on each student's sex, year...

Journal: :Revista de saude publica 2003
João A da Rosa Hernany H G Justino José M S Barata

The objective of the study was to evaluate the measurements of eggshells from three colonies of P. megistus, two from the lab and one from a sylvatic habitat. Fifty eggshells from each colony were measured with the use of a stereoscopic microscope and the Qwin image analysis system,. The statistical analysis was performed using unpaired t-test in INSTAT program. The length, width and diameter o...

2004
Andreas Christmann

The behaviour of group sequential tests in the two-sample problem is investigated if one replaces the classical non-robust estimators in the t-test statistic by modern robust estimators of location and scale. Hampel's 3-part redescending M-estimator 25A used in the Princeton study and the robust scale estimators length of the shortest half proposed by Rousseeuw & Leroy and Q proposed by Roussee...

Journal: :Journal of oral science 2011
Hossain Neamatollahi Masoumeh Ebrahimi Maryam Talebi Mana H Ardabili Keiwan Kondori

To establish efficient methods for self-prevention of oral diseases, assessment of dental health behavior and knowledge in various social classes is necessary. The main purpose of this study was to determine the major differences in oral health knowledge and behavior in a group of Iranian pre-university students. In this cross-sectional study, 591 pre-university students from different regions ...

2012
Sherine Gaber Soha Hassan Abdel-Latif

BACKGROUND In Egypt, many pesticides are used to control pests in agricultural farms. Our study aimed to investigate knowledge and behaviors of farmers related to pesticide use and their relation to educational level and health locus of control. Health locus of control is the degree to which individuals believe that their health is controlled by internal or external factors. METHODS A cross-s...

2013
Bharti Roy Anita Arora

The present study was conducted to find out the relationship between feeling of security-insecurity and prejudice. Eighty students (40 boys and 40 girls) were selected from Hindi medium schools of Ranchi town, belonging to the age between 13 to 16 years. Security-Insecurity Test and Prejudice Scale were administered. The results were tested for significance of difference using t test. The resul...

2015
Pauline Ducrot Caroline Méjean Benjamin Allès Philippine Fassier Serge Hercberg Sandrine Péneau

BACKGROUND Although culinary practices have strongly evolved over time, few data are available on contemporary dish choices during meal preparation. We therefore sought to determine individual motives when choosing dishes to be prepared during weekdays and on weekends. METHODS The importance of 27 criteria related to dish choices was assessed in 53,025 participants in the NutriNet-Santé study...

Journal: : 2022

هدف: هدف پژوهش حاضر، ساخت و اعتبار­سنجی سیاهه آسیب‌شناسی روانشناختی نوجوانان در فضای مجازی بود. روش: روش آمیخته اکتشافی (کیفی-کمی) بدین منظور با استفاده از تحلیل مضمون مقالات مصاحبه‌های انجام‌شده متخصصان فعال مجازی، آسیب­ ها شناسایی شدند بر اساس آن ­ای ساخته شد. جامعه آماری بخش کیفی شامل مقالات، اساتید دانشگاه­ های اراک، اصفهان، امام خمینی قزوین شهر اراک بودند که نمونه هدفمند آنها انتخاب کمی بو...

2014
Marzieh Akbarzade Sara Setodeh Farkhondeh Sharif Najaf Zare

BACKGROUND Fathers' cooperation has been less taken into account in the process of pregnancy. The present study aimed to investigate the effect of training the fathers regarding attachment skills on maternal-fetal attachment in primigravida women in 2013. METHODS This randomized controlled trial was performed on 150 qualified pregnant women's husbands. The intervention group took part in four...

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