Results 21 to 30 of about 719,228 (293)

Joint stochastic simulation of petrophysical properties with elastic attributes based on parametric copula models

open access: yesGeofísica Internacional, 2023
The spatial stochastic co-simulation method based on copulas is a general method that allows simulating variables with any type of dependency and probability distribution functions.
Daniel Vázquez-Ramírez   +4 more
doaj   +1 more source

The impact of institutions on innovation networks: empirical evidence from Poland

open access: yesTechnological and Economic Development of Economy, 2022
Innovation networks may accelerate and improve the innovation process, while institutional pathologies may hamper it. This study employs the Kruskal-Wallis H test and regression analysis to determine if the relationship between institutions and ...
Małgorzata Godlewska   +2 more
doaj   +1 more source

Use and Misuse of the Likert Item Responses and Other Ordinal Measures [PDF]

open access: yes, 2015
International Journal of Exercise Science 8(3): 297-302, 2015. Likert, Likert-type, and ordinal-scale responses are very popular psychometric item scoring schemes for attempting to quantify people’s opinions, interests, or perceived efficacy of an ...
Bishop, Phillip A, Herron, Robert L
core   +2 more sources

Genotype by environment interaction and yield stability in sugarcane

open access: yesRevista Facultad Nacional de Agronomía Medellín, 2017
Genotype by environment interaction (GEI) reduces the association between phenotype and genotype which result in relative ranking and stability differences of genotypes across environment.
Ramon Antonio Rea   +4 more
doaj   +1 more source

Cluster permutation analysis for EEG series based on non-parametric Wilcoxon–Mann–Whitney statistical tests

open access: yesSoftwareX, 2022
Cluster-based permutation tests are widely used in neuroscience studies for the analysis of high-dimensional electroencephalography (EEG) and event-related potential (ERP) data as it may address the multiple comparison problem without reducing the ...
Diego Candia-Rivera, Gaetano Valenza
doaj   +1 more source

A Novel Non-Parametric Spatiotemporal Scan Statistic: An Application to Detect Disease Outbreaks

open access: yesApplied Sciences, 2022
The majority of the widely used scan statistics are based on distributional assumptions. Contrary to the existing methods, with a new perspective in clustering, the Mann-Whitney Scan Statistic was introduced to detect clusters in continuous data indexed ...
Kethmi H. Hettige   +1 more
doaj   +1 more source

Relationship between Project Space Types, Optimize Energy Performance Credit, and Project Size in LEED-NC Version 4 (v4) Projects: A Case Study

open access: yesBuildings, 2022
A previous study (Pushkar 2021) showed a significant non-parametric correlation between the Optimize Energy Performance credit from the energy and atmosphere category (EAc7) and project size in Leadership in Energy and Environmental Design for New ...
Svetlana Pushkar
doaj   +1 more source

Graph-Based Change-Point Detection [PDF]

open access: yes, 2014
We consider the testing and estimation of change-points -- locations where the distribution abruptly changes -- in a data sequence. A new approach, based on scan statistics utilizing graphs representing the similarity between observations, is proposed ...
Chen, Hao, Zhang, Nancy
core   +3 more sources

Parametric test for non-normally distributed continuous data: For and against

open access: yesElectronic Physician, 2019
Choosing between parametric and non-parametric statistical tests for analysis of non-normally distributed continuous data is a long-standing controversy.
Umesh Wadgave, Mahesh Ravindra Khairnar
doaj   +1 more source

Direct observation of non-classical photon statistics in parametric downconversion

open access: yes, 2003
We employ a high quantum efficiency photon number counter to determine the photon number distribution of the output field from a parametric downconverter.
Bartlett, Stephen D.   +4 more
core   +1 more source

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