نتایج جستجو برای: آزمون t test

تعداد نتایج: 1524276  

ژورنال: :مهندسی و مدیریت آبخیز 2011
رضا غفوریان حسین ثنایی نژاد نجفقلی غیاثی ابوالقاسم دادرسی جواد ایزی

تعیین شیب حوزه های آبخیز از نیازهای اساسی اکثر طرح­های عمرانی و حفاظت آب و خاک است. روش ها و روابط متعددی برای تعیین این عاملارائه شده است. روش های جاستین، شبکه­بندی، طول خطوط تراز (هورتون)، هشت نقطه­ای، منحنی شیب متوسط و سامانه های اطلاعات جغرافیایی (gis)، بیش از سایر روش ها برای تعیین شیب متوسط یک حوزه آبخیز در طرح­ها مورد استفاده قرار می­گیرند.کارشناسان بر اساس تجربه از یکی از این روش ها است...

Journal: :Tutorials in Quantitative Methods for Psychology 2011

Journal: :Human brain mapping 2006
Sébastien Mériaux Alexis Roche Ghislaine Dehaene-Lambertz Bertrand Thirion Jean-Baptiste Poline

In group average analyses, we generalize the classical one-sample t test to account for heterogeneous within-subject uncertainties associated with the estimated effects. Our test statistic is defined as the maximum likelihood ratio corresponding to a Gaussian mixed-effect model. The test's significance level is calibrated using the same sign permutation framework as in Holmes et al., allowing f...

2014
J. G. Bagi

Background: Blended learning includes an integration of face to face classroom learning with technology enhanced online material. It provides the convenience, speed and cost effectiveness of e-learning with the personal touch of traditional learning. Objective: The objective of the present study was to assess the effectiveness of a combination of e-learning module and traditional teaching (Blen...

Journal: :Investigacion y educacion en enfermeria 2014
Mariana de Oliveira Fonseca-Machado Vanderlei José Haas Juliana Cristina dos Santos Monteiro Flávia Gomes-Sponholz

OBJECTIVE Identifying the knowledge about breastfeeding of the nurses of the Family Health Program, and possible associations between the knowledge and personal, professional and self evaluation aspects. METHODOLOGY Observational and cross-sectional study conducted in family health units of a city in Minas Gerais, Brazil, with 85 nursing professionals. Data were collected through a questionna...

2016
Johnette Caulfield Jay Caulfield

Under what conditions are graduate students most likely to learn? How do we, as teachers, best create those conditions? The answer to these questions was the focus of this study whereby 91 masters’ students identified learning tasks that were most and least engaging. A model utilizing affective, behavioral and cognitive attributes was developed to measure graduate student engagement in learning...

2013
E Scott Sills Liubomir Chiriac Denis Vaughan Christopher A Jones Shala A Salem

BACKGROUND This investigation evaluated standardized process of care data collected on selected hospitals serving a remote rural section of westernmost North Carolina. METHODS Centers for Medicare and Medicaid Services data were analyzed retrospectively for multiple clinical parameters at Fannin Regional Hospital, Murphy Medical Center, and Union General Hospital. Data were analyzed by paired...

2017
Tomislav Lauc Enita Nakaš Melina Latić-Dautović Vildana Džemidžić Alisa Tiro Ivana Rupić Mirjana Kostić Ivan Galić

Objective. To evaluate the difference between chronological and dental age, calculated by Willems and Cameriere methods, in various skeletal patterns according to Steiner's ANB Classification. Methods. This retrospective cross-sectional study comprised the sample of 776 participants aged between 7 and 15 years (368 males and 408 females). For each participant, panoramic images (OPT) and laterol...

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...

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