Results 1 to 10 of about 28,805 (302)

Complex Parameter Rao and Wald Tests for Assessing the Bandedness of a Complex-Valued Covariance Matrix

open access: yesSignals
Banding the inverse of a covariance matrix has become a popular technique for estimating a covariance matrix from a limited number of samples. It is of interest to provide criteria to determine if a matrix is bandable, as well as to test the bandedness ...
Zhenghan Zhu
doaj   +1 more source

Sequentially Estimating the Approximate Conditional Mean Using Extreme Learning Machines

open access: yesEntropy, 2020
This study examined the extreme learning machine (ELM) applied to the Wald test statistic for the model specification of the conditional mean, which we call the WELM testing procedure.
Lijuan Huo, Jin Seo Cho
doaj   +1 more source

On the Behaviour of Wald Statistics for the Disjunction of Two Regular Hypotheses

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 1993
SUMMARY Occasionally hypotheses arise which, although not themselves regular, have the logical structure of the disjunction of two, or in general several, regular hypotheses. An example of such a hypothesis is that of collapsibility in a three-way contingency table as defined by Whittemore.
openaire   +2 more sources

Adaptive Detection of Range-distributed Targets in Weighted Generalized Inverse Gaussian Clutter

open access: yesLeida xuebao
In this paper, we investigate the adaptive detection of range-distributed targets in compound-Gaussian clutter, where the texture component follows a Weighted Generalized Inverse Gaussian (WGIG) distribution.
Zhenyu XU   +6 more
doaj   +1 more source

A Robust Covariate-Dependent Kink Threshold Regression Model for Panel Data

open access: yesAxioms
This paper introduces a rank-based panel kink threshold regression model with a covariate-dependent threshold, where the threshold is specified as a function of informative covariates.
Ding Ma   +4 more
doaj   +1 more source

Exclusive Breastfeeding Knowledge, Intention to Practice and Predictors among Primiparous Women in Enugu South-East, Nigeria

open access: yesJournal of Pregnancy, 2019
Breastfeeding is considered as the most complete nutritional source for infants because breast milk contains the essential carbohydrates, fats, proteins, and immunological factors needed for infants to thrive and resist infection in the formative first ...
Chikaodili N. Ihudiebube-Splendor   +7 more
doaj   +1 more source

Estimating Parameters and Predicting the Risk of MiscarriageInfertility, and Psychological Disorders Among Chemical Attack Survivors of Kurdistan by Using Multinomial Logistic Regression Analysis

open access: yesZanco Journal of Humanity Sciences
Since the Ba'ath regime took over Iraq, they oppressed the Kurdish nation in every way. In 1987, on the pretext of the Iran-Iraq war, they bombed the two cities (Sardasht and Piran shar) in East Kurdistan   After that year, 40 villages and cities in ...
Nazeera Sedeek Kareem Al Barznji
doaj   +1 more source

Cervical cancer: knowledge, attitude and practice on the prevention examination [PDF]

open access: yesRevista Brasileira de Enfermagem
Objective: to evaluate the knowledge, attitude and practice of women on the cervical-uterine cancer screening and to investigate their association with sociodemographic variables. Method: a cross-sectional study, carried out from July to September 2015,
Ester Marcele Ferreira de Melo   +5 more
doaj   +3 more sources

Three cumulative link models for ordinal responses: A review of methods and power comparisons [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2008
Power assessing the goodness of fits of three cumulative link models for ordinal response data with interaction term of explanatory variables is investigated.
Sujin Sukgumphaphan   +1 more
doaj  

Comparison of Relative Informational Content of Three Section and Five Section Cash-flow Statement in Explaining Future Stock Return of Listed Companies in Tehran Securities and Exchange (TSE) [PDF]

open access: yesمطالعات تجربی حسابداری مالی, 2011
The main purpose of this research is to compare the relative informational content of operating and financing cash flows of three and five section cash flow statement in explaining future stock return.
D foroghi   +3 more
doaj  

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