Results 31 to 40 of about 2,201,246 (301)

Joint processing of measurements in a rangefinder-doppler multistatic radar system

open access: yesНаучный вестник МГТУ ГА, 2020
The article considers the option of organizing joint processing of radar information in a multistatic rangefinder - doppler radar system. The least-squares method is used to obtain analytical expressions for oblique ranges and radial velocities of ...
E. G. Borisov
doaj   +1 more source

Wide-Range Digital-Analog Mixed Calibration Technology of a DC Instrument Transformer Test Set

open access: yesIEEE Access, 2021
A DC instrument transformer test set (ITTS), as an error measurement device for DC instrument transformers, needs to be calibrated regularly to ensure its accuracy. Existing calibration technology can only achieve DC ITTS error calibrations within a zero
Haoliang Hu   +6 more
doaj   +1 more source

The Standard Errors of Persistence [PDF]

open access: yesSSRN Electronic Journal, 2019
A large literature on persistence finds that many modern outcomes strongly reflect characteristics of the same places in the distant past. However, alongside unusually high t statistics, these regressions display severe spatial autocorrelation in residuals, and the purpose of this paper is to examine whether these two properties might be connected.
openaire   +3 more sources

Comparison of Propensity Score Weighting Methods to Remove Selection Bias in Average Treatment Effect Estimates

open access: yesInternational Journal of Turkish Education Sciences, 2023
In this Monte Carlo simulation study, the performance of six different propensity score methods implemented through weighting cases was investigated: inverse probability of treatment weighting, truncated inverse probability of treatment weighting ...
Sungur Gürel, Walter Lana Leite
doaj   +1 more source

A-not-B error [PDF]

open access: yes, 2022
The A-not-B reaching error has been shown to exist in most non-human species tested so far. There are a few exceptions: apes (apart from orang-utans), puppies, kittens, wolves and goats.
Osthaus, B.
core  

Investigating the Effect of Missing Data on the Experimental Test of Mathematics for the Second-Secondary Students

open access: yesJournal of Educational, Cultural and Psychological Studies, 2022
This study aimed to uncover the effect of the missing values using the Rasch model on an experimental test of mathematics for the second-secondary students.
Aiman Mohammad Freihat
doaj   +1 more source

Estimated annual retention means ± standard error. [PDF]

open access: yes, 2022
Estimated annual retention means ± standard error.
Nandan H. Shetty (12436629)   +4 more
core   +1 more source

A fixed count sampling estimator of stem density based on a survival function

open access: yesJournal of Forest Science, 2015
In fixed count sampling (FCS) a fixed number (k) of observations is made at n randomly selected sample locations. For estimation of stem density, the distance from a random sample location to the k nearest trees was measured.
S. Magnussen
doaj   +1 more source

The decline rate of eGFR. Error bars indicate standard error. [PDF]

open access: yes, 2013
The decline rate of eGFR. Error bars indicate standard error.
Jung Tak Park (299873)   +13 more
core   +1 more source

In-class activity comparing standard errors as a function of sample size with SPSS [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2020
This vignette presents an in-class demonstration to introduce the notion of standard error. The students must be able to compute means using SPSS. They must also be able to eye-ball standard deviation from a list of numbers.
Cousineau, Denis
doaj   +1 more source

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