Results 161 to 170 of about 415,967 (312)

Estimation Error in the Correlation of Two Random Variables: A Spreadsheet-Based Exposition

Spreadsheets in Education, 2009
Although the statistical term correlation is well-known across many academic disciplines, estimation error in the correlation has traditionally been considered to be a topic too difficult for students outside statistical fields.
Clarence C. Y. Kwan
doaj  

The Long-Term Effectiveness of Internet-Based Interventions on Multiple Health Risk Behaviors: Systematic Review and Robust Variance Estimation Meta-analysis. [PDF]

J Med Internet Res, 2021
Tzelepis F, Mitchell A, Wilson L, Byrnes E, Haschek A, Leigh L, Oldmeadow C.   +6 more
europepmc   +1 more source

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source

Design and real time implementation of nonlinear minimum variance filter

, 2008
In this paper, the design and real time implementation of a Nonlinear Minimum Variance (NMV) estimator is presented using a laboratory based ball and beam system. The real time implementation employs a LabVIEW based tool. The novelty of this work lies in
Grimble, M.J., Naz, Shamser Ali
core  

Multiply Robust Bootstrap Variance Estimation in the Presence of Singly Imputed Survey Data. [PDF]

J Surv Stat Methodol, 2021
Chen S, Haziza D, Mashreghi Z.
europepmc   +1 more source

Applicability of mitotic figure counting by deep learning: a development and pan‐cancer validation study

FEBS Open Bio, EarlyView.
In this study, we developed a deep learning method for mitotic figure counting in H&E‐stained whole‐slide images and evaluated its prognostic impact in 13 external validation cohorts from seven different cancer types. Patients with more mitotic figures per mm2 had significantly worse patient outcome in all the studied cancer types except colorectal ...
Joakim Kalsnes, Maria X. Isaksen, Frida Julbø, Manohar Pradhan, Andreas Kleppe, Sepp De Raedt, Ole‐Johan Skrede, Turid Torheim, John Arne Nesheim, Hans Martin Mohn, Hanne A. Askautrud, Karolina Cyll, Wanja Kildal, Emma Rewcastle, Melinda Lillesand, Vebjørn Kvikstad, Emiel Janssen, Robert Jones, Odd Terje Brustugun, Bjørn Brennhovd, Erik Skaaheim Haug, Lill‐Tove Rasmussen Busund, Elin Richardsen, Sigve Andersen, Tom Dønnem, Kristina Lindemann, Gunnar Kristensen, Neil A. Shepherd, Marco Novelli, Knut Liestøl, David Kerr, Håvard E. Danielsen, Tarjei S. Hveem   +32 more
wiley   +1 more source

Variance Reduction with Model-based Counterfactual Estimation

Variance reduction is an important area of research in the realm of online controlled experiments, also known as A/B tests. Reducing outcome variability in an A/B test improves the test’s statistical power and improves the efficiency of the ...
Shim, Kyu Min
core  

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source

Estimation Risk, Market Efficiency, and the Predictability of Returns [PDF]

In asset pricing, estimation risk refers to investor uncertainty about the parameters of the return or cashflow process. We show that with estimation risk the observable properties of prices and returns can differ significantly from the properties ...
Jay Shanken, Jonathan Lewellen
core  

Variance Estimation for Weighted Average Treatment Effects. [PDF]

Stat Biosci
Li H, Liu Y, Zhou Y, Liu J, Fu D, Matsouaka RA.   +5 more
europepmc   +1 more source