Results 311 to 320 of about 3,116,070 (323)

Gait variability and fall risk in community-living older adults: a 1-year prospective study.

Archives of Physical Medicine and Rehabilitation, 2001
OBJECTIVE To test the hypothesis that increased gait variability predicts falls among community-living older adults attending an outpatient clinic. DESIGN Prospective, cohort study. SETTING Three outpatient geriatric clinics. PARTICIPANTS Fifty-two
Jeffrey M. Hausdorff, D. Rios, H. Edelberg   +2 more
semanticscholar   +1 more source

Estimates of Genetic and Environmental Variability in Soybeans1

, 1955
RiCENT studies on a number of characters of soybeans have been directed toward estimation of heritability, that is, the fraction of variance in phenotypic expression that arises from genetic effects.
H. W. Johnson, H. F. Robinson, R. Comstock   +2 more
semanticscholar   +1 more source

Characterization of Geotechnical Variability

, 1999
Geotechnical variability is a complex attribute that results from many disparate sources of uncertainties. The three primary sources of geotechnical uncertainties are inherent variability, measurement error, and transformation uncertainty.
K. Phoon, F. Kulhawy
semanticscholar   +1 more source

Human alteration of global surface water storage variability

Nature, 2021
S. Cooley, J. Ryan, L. Smith
semanticscholar   +1 more source

Spatial Variability

Encyclopedia of Ocean Engineering, 2021
Jinhui Li, Xueyou Li
semanticscholar   +1 more source

The role of increasing temperature variability in European summer heatwaves

Nature, 2004
C. Schär, P. Vidale, D. Lüthi, C. Frei, C. Häberli, M. Liniger, C. Appenzeller   +6 more
semanticscholar   +1 more source

Holocene climate variability

Quaternary Research, 2004
Paul A. Mayewskia, Eelco E. Rohlingb, J. C. Stagerc, Wibj, rn Karlénd, Kirk A. Maascha, L. D. Meekere, Eric A. Meyersona, Francoise Gassef, Shirley van Kreveldg, Karin Holmgrend, Julia Lee-Thorph, Gunhild Rosqvistd, Frank Racki, Michael Staubwasserj, Ralph R. Schneiderk, Eric J. Steigl   +16 more
semanticscholar   +1 more source

Mycorrhizal fungal diversity determines plant biodiversity, ecosystem variability and productivity

Nature, 1998
M. V. D. Heijden, J. Klironomos, M. Ursic, P. Moutoglis, R. Streitwolf-Engel, T. Boller, A. Wiemken, I. Sanders   +7 more
semanticscholar   +1 more source

Heart rate variability: a review

Medical and Biological Engineering and Computing, 2006
U. Acharya, P. Joseph, N. Kannathal, C. M. Lim, J. Suri   +4 more
semanticscholar   +1 more source

A meta-analysis of heart rate variability and neuroimaging studies: Implications for heart rate variability as a marker of stress and health

Neuroscience and Biobehavioral Reviews, 2012
J. Thayer, F. Åhs, M. Fredrikson, J. Sollers, T. Wager   +4 more
semanticscholar   +1 more source