Results 111 to 120 of about 1,465,496 (351)

Bootstrap Statistical Tests of Rank Determination for System Identification [PDF]

open access: yes
Identification in the context of multivariate state space modelling involves the specification of the dimension of the state vector. One identification approach requires an estimate of the rank of a Hankel matrix.
George Kapetanios, Gonzalo Camba-Mendez
core  

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

How to measure consumer's inconsistency in sensory testing?

open access: yesCurrent Research in Food Science
Consumer sensory testing is the basis for determining directions of product development in the food industry. However, while compliance assessment by trained and expert assessors is well developed, few information is available on testing consumer ...
László Sipos   +4 more
doaj   +1 more source

Nonparametric Rank Tests for Non-stationary Panels [PDF]

open access: yes
This study develops new rank tests for panels that include panel unit root tests as a special case. The tests are unusual in that they can accommodate very general forms of both serial and cross-sectional dependence, including cross-unit cointegration ...
Pedroni, Peter   +3 more
core  

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

NONPARAMETRIC TESTS FOR COMPARING SURVIVAL DATA WITH NONPROPORTIONAL HAZARDS: EXPLORATION OF A NEW WEIGHT FUNCTION [PDF]

open access: yes, 2005
For survival data with nonproportional hazards, the weighted log-rank tests with a proper weighting function are expected to be more sensitive than the simple log-rank statistics for comparing survival data with random effects.
Xu, Qing
core  

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

The uniform general signed rank test and its design sensitivity

open access: yes, 2019
A sensitivity analysis in an observational study tests whether the qualitative conclusions of an analysis would change if we were to allow for the possibility of limited bias due to confounding.
Howard, Steven R., Pimentel, Samuel D.
core  

Smoothing-inspired lack-of-fit tests based on ranks

open access: yes, 2008
A rank-based test of the null hypothesis that a regressor has no effect on a response variable is proposed and analyzed. This test is identical in structure to the order selection test but with the raw data replaced by ranks. The test is nonparametric in
Hart, Jeffrey D.
core   +1 more source

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