Results 41 to 50 of about 4,373,909 (285)

Primordial Statistical Anisotropies: The Effective Field Theory Approach

, 2015
In this work we present the effective field theory of primordial statistical anisotropies generated during anisotropic inflation involving a background $U(1)$ gauge field.
Abolhasani, Ali Akbar, Akhshik, Mohammad, Emami, Razieh, Firouzjahi, Hassan   +3 more
core   +2 more sources

Generalized time-frequency coherency for assessing neural interactions in electrophysiological recordings [PDF]

, 2011
Time-frequency coherence has been widely used to quantify statistical dependencies in bivariate data and has proven to be vital for the study of neural interactions in electrophysiological recordings.
Andreas Daffertshofer, Michael Breakspear, Saeid Mehrkanoon, Tjeerd W. Boonstra   +3 more
core   +2 more sources

A Review of Sample Size Determination for Common Experi-mental Designs: Further Simplified Equations [PDF]

مجلة جامعة النجاح للأبحاث العلوم الطبيعية
Determination of the required sample size is an important step in the planning of any research study. A large number of commercial and online resources are readily available for calculation of sample size required for various research designs.
Jihad M. Abdallah
doaj   +1 more source

NRASQ61R Expression in Lymphatic Endothelial Cells Causes Enlarged Vessels, Hemorrhagic Chylous Effusions, and High Mortality in a Mouse Model of Kaposiform Lymphangiomatosis

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Kaposiform lymphangiomatosis (KLA) is an aggressive complex lymphatic anomaly. Patients exhibit malformed lymphatic vessels and often develop hemorrhagic effusions and elevated angiopoietin‐2 (Ang‐2) levels. A somatic NRAS p.Q61R (NRASQ61R) mutation has been associated with KLA.
C. Griffin McDaniel, Patricia Pastura, Joshua P. Scallan, Timothy D. Le Cras   +3 more
wiley   +1 more source

Normrank Correlations for Testing Associations and for Use in Latent Variable Models

Open Education Studies
Pearson’s correlation is widely used to test for an association between two variables and also forms the basis of several multivariate statistical procedures including many latent variable models. Spearman’s ρ\rho is a popular alternative.
Wright Daniel B.
doaj   +1 more source

Power Analyses for Moderator Effects With (Non)Randomly Varying Slopes in Cluster Randomized Trials

Methodology, 2021
Researchers often apply moderation analyses to examine whether the effects of an intervention differ conditional on individual or cluster moderator variables such as gender, pretest, or school size.
Nianbo Dong, Jessaca Spybrook, Benjamin Kelcey, Metin Bulus   +3 more
doaj   +1 more source

Physical origin of the power-law tailed statistical distributions

, 2012
Starting from the BBGKY hierarchy, describing the kinetics of nonlinear particle system, we obtain the relevant entropy and stationary distribution function.
Clementi F., de Groot S. R., G. KANIADAKIS, Huang K., Kaniadakis G., Kaniadakis G., Lapenta G., Oikonomou T., Stankovic M. S., Wada T.   +9 more
core   +1 more source

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source

Power-law size distributions in geoscience revisited

, 2019
The size or energy of diverse structures or phenomena in geoscience appears to follow power-law distributions. A rigorous statistical analysis of such observations is tricky, though.
Corral, Álvaro, González, Álvaro
core   +1 more source

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source