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Hydraulic Tests of the PZ0 Gear Micropump and the Importance Rank of Its Design and Operating Parameters

open access: yesEnergies, 2022
This article presents the results of hydraulic tests performed for a prototype gear micropump of a new design. The development of modern hydraulic systems is following two directions: the integration of hydraulic and electronic engineering and a ...
Piotr Osiński   +2 more
doaj   +1 more source

Minimum Distance Tests and Estimates Based on Ranks

open access: yesRevstat Statistical Journal, 2020
It is well known that the least squares estimate in classical linear regression model is very sensitive to violation of the assumptions, in particular normality of model errors.
Radim Navrátil
doaj   +1 more source

How to use χ2 test correctly——the rank sum tests and the implementation of the SAS software

open access: yesSichuan jingshen weisheng, 2021
The purpose of this article was to introduce the rank sum test and its SAS implementation. The concrete contents included the following three aspects: ①the simple linear rank test of two-sample data, ②the one-way ANOVA rank sum test of the multi-sample ...
Hu Chunyan, Hu Liangping
doaj   +1 more source

Nonparametric multivariate rank tests and their unbiasedness

open access: yes, 2012
Although unbiasedness is a basic property of a good test, many tests on vector parameters or scalar parameters against two-sided alternatives are not finite-sample unbiased. This was already noticed by Sugiura [Ann. Inst. Statist. Math.
Jurečková, Jana, Kalina, Jan
core   +2 more sources

A note on exponentially bounded stopping times of certain one-sample sequential rank order tests

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
A simple proof of the exponential boundedness of the stopping time of the one-sample sequential probability ratio tests (SPRT's) is obtained.
Z. Govindarajulu
doaj   +1 more source

Asymptotic Theory for Cointegration Analysis When the Cointegration Rank Is Deficient

open access: yesEconometrics, 2019
We consider cointegration tests in the situation where the cointegration rank is deficient. This situation is of interest in finite sample analysis and in relation to recent work on identification robust cointegration inference.
David H. Bernstein, Bent Nielsen
doaj   +1 more source

How to use χ2 test correctly——the log-rank test and the implementation of SAS software

open access: yesSichuan jingshen weisheng, 2021
The purpose of this article was to introduce the log-rank test and the SAS implementation. There were many different expression forms for the test statistics of the log-rank tests.
Hu Chunyan, Hu Liangping
doaj   +1 more source

On Hodges and Lehmann's "$6/\pi$ result" [PDF]

open access: yes, 2013
While the asymptotic relative efficiency (ARE) of Wilcoxon rank-based tests for location and regression with respect to their parametric Student competitors can be arbitrarily large, Hodges and Lehmann (1961) have shown that the ARE of the same Wilcoxon ...
Hallin, Marc   +2 more
core   +1 more source

Johansen’s Reduced Rank Estimator Is GMM

open access: yesEconometrics, 2018
The generalized method of moments (GMM) estimator of the reduced-rank regression model is derived under the assumption of conditional homoscedasticity.
Bruce E. Hansen
doaj   +1 more source

Examining the Otolaryngology Match and Relationships Between Publications and Institutional Rankings

open access: yesOTO Open, 2020
This study examines associations among publication number, National Institutes of Health (NIH) funding rank, medical school research rank, and otolaryngology department ranks of otolaryngology applicants during the 2018-2019 match cycle.
Evan M. Ryan MS   +3 more
doaj   +1 more source

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