Results 51 to 60 of about 1,082,135 (333)

LATOR Covariance Analysis

, 2005
We present results from a covariance study for the proposed Laser Astrometric Test of Relativity (LATOR) mission. This mission would send two laser-transmitter spacecraft behind the Sun and measure the relative gravitational light bending of their ...
Joseph E Plowman, Press W H, Ronald W Hellings, Turyshev S G, Turyshev S G Shao M Nordtvedt K L J   +4 more
core   +1 more source

Baseline Regional Cholinergic Denervation Predicts Cognitive Trajectories in Moderate Parkinson Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cognitive decline is a disabling and variable feature of Parkinson disease (PD). While cholinergic system degeneration is linked to cognitive impairments in PD, most prior research reported cross‐sectional associations. We aimed to fill this gap by investigating whether baseline regional cerebral vesicular acetylcholine transporter ...
Taylor Brown, Giulia Carli, Prabesh Kanel, Stiven Roytman, Jaimie Barr, Nicolaas I. Bohnen, Roger L. Albin   +6 more
wiley   +1 more source

Covariance matrix estimation for stationary time series

, 2012
We obtain a sharp convergence rate for banded covariance matrix estimates of stationary processes. A precise order of magnitude is derived for spectral radius of sample covariance matrices.
Wu, Wei Biao, Xiao, Han
core   +1 more source

Parametrik Olmayan Kovaryans Analizinde Kullanılan Metotlar

Düzce Tıp Fakültesi Dergisi, 2018
Amaç: Parametrik kovaryans analizi (ANCOVA) varsayımlarının sağlanamaması ve/veya bağımlı değişkenin iki değerli/sıralayıcı ölçekli olması durumunda, parametrik olmayan ANCOVA yaklaşımlarından yararlanılmaktadır. Parametrik olmayan ANCOVA metodolojisinde
Şengül CANGÜR, Mehmet Ali SUNGUR, Handan ANKARALI   +2 more
doaj   +1 more source

New Closed Form Estimators for the Beta Distribution

Mathematics, 2023
In this paper, we detail closed form estimators for beta distribution that are simpler than those proposed by Tamae, Irie and Kubokawa. The proposed estimators are shown to have smaller asymptotic variances and smaller asymptotic covariances compared to ...
Victor Mooto Nawa, Saralees Nadarajah
doaj   +1 more source

Covariant Representability for Covariant Multilinear Operators

Rocky Mountain Journal of Mathematics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Multidimensional Profiling of MRI‐Negative Temporal Lobe Epilepsy Uncovers Distinct Phenotypes

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Although hippocampal sclerosis (TLE‐HS) represents the most frequent cause of temporal lobe epilepsy (TLE), up to 30% of patients show no lesion on visual MRI inspection (TLE‐MRIneg). These cases pose diagnostic and therapeutic challenges and are underrepresented in surgical series.
Alice Ballerini, Alessia Casarini, Niccolò Biagioli, Laura Mirandola, Daniela Ballotta, Paul Summers, Simona Scolastico, Laura Madrassi, Maurilio Genovese, Marcella Malagoli, Gaetano Cantalupo, Giada Giovannini, Matteo Pugnaghi, Niccolò Orlandi, Laura Tassi, Valeria Cuccarini, Domenico Aquino, Elena Tartara, Fulvia Palesi, Giuseppe Didato, Paolo Vitali, the 3TLE Study Group, Roberta Di Giacomo, Fabio Doniselli, Federica Mazzi, Carlo Andrea Galimberti, Claudia A. M. Gandini Wheeler‐Kingshott, Stefano Meletti, Anna Elisabetta Vaudano   +28 more
wiley   +1 more source

Simulations of Wide-Field Weak Lensing Surveys II: Covariance Matrix of Real Space Correlation Functions

, 2011
Using 1000 ray-tracing simulations for a {\Lambda}-dominated cold dark model in Sato et al. (2009), we study the covariance matrix of cosmic shear correlation functions, which is the standard statistics used in the previous measurements.
Albrecht, Albrecht, Cooray, Doré, Eisenstein, Hamana, Hicken, Hu, Jarvis, Kaiser, Komatsu, Mantz, Masahiro Takada, Masanori Sato, Miyazaki, Okumura, Perlmutter, Refregier, Riess, Sato, Seo, Spergel, Takahashi, Takahiko Matsubara, Takashi Hamana, Taruya, Van Waerbeke, Van Waerbeke, Vikhlinin, White   +29 more
core   +1 more source

Scale and ecosystem services: how do observation, management, and analysis shift with scale - lessons from Québec

Ecology and Society, 2016
Ecosystem service assessment and management are shaped by the scale at which they are conducted; however, there has been little systematic investigation of the scales associated with ecosystem service processes, such as production, benefit distribution ...
Ciara Raudsepp-Hearne, Garry D. Peterson
doaj   +1 more source

Spatial correlation reverses the compound effect of multiple stressors on rocky shore biofilm

Ecology and Evolution, 2022
Understanding how multifactorial fluctuating environments affect species and communities remains one of the major challenges in ecology. The spatial configuration of the environment is known to generate complex patterns of correlation among multiple ...
Luca Rindi, Jianyu He, Lisandro Benedetti‐Cecchi   +2 more
doaj   +1 more source