Results 21 to 30 of about 245,542 (303)

Problem-Based Learning (PBL) and Student Interest in STEM Careers: The Roles of Motivation and Ability Beliefs

open access: yesEducation Sciences, 2017
Amid growing concerns about the future of the U.S. economy and workforce, educators and policymakers alike have increasingly emphasized the need to expand the number of students interested in, qualified for and actually pursuing careers in science ...
Melanie LaForce   +2 more
doaj   +1 more source

A Functional Data Analysis Approach for the Detection of Air Pollution Episodes and Outliers: A Case Study in Dublin, Ireland

open access: yesMathematics, 2020
Ground level concentrations of nitrogen oxide (NOx) can act as an indicator of air quality in the urban environment. In cities with relatively good air quality, and where NOx concentrations rarely exceed legal limits, adverse health effects on the ...
Javier Martínez Torres   +5 more
doaj   +1 more source

Data compression algorithms for sensor networks with periodic transmission schemes [PDF]

open access: yesMATEC Web of Conferences, 2022
The operating state of switch cabinet is significant for the reliability of the whole power system, collecting and monitoring its data through the wireless sensor network is an effective method to avoid accidents.
Chen Jianxin   +5 more
doaj   +1 more source

Bootstrap innovational outlier unit root tests in dependent panels [PDF]

open access: yes, 2012
In this paper, we propose new simple innovational outlier (IO) panel unit root tests with a break. A bootstrap method for dealing with cross-sectional dependence is provided and small sample properties of the bootstrap tests are investigated by Monte ...
Gutierrez, L   +8 more
core   +1 more source

Separating Effect From Significance in Markov Chain Tests

open access: yesStatistics and Public Policy, 2020
We give qualitative and quantitative improvements to theorems which enable significance testing in Markov chains, with a particular eye toward the goal of enabling strong, interpretable, and statistically rigorous claims of political gerrymandering.
Maria Chikina   +3 more
doaj   +1 more source

APPLICATION OF BIPLOT ANALYSIS WITH ROBUST SINGULAR VALUE DECOMPOSITION TO POVERTY DATA IN SULAWESI ISLAND

open access: yesMedia Statistika, 2023
Poverty is defined as an inability of the individual to meet basic needs for a decent life. According to BPS data in 2020, Sulawesi Island ranks fifth as the poorest island in Indonesia.
Febriyana Taki   +2 more
doaj   +1 more source

ℓ1 Major Component Detection and Analysis (ℓ1 MCDA) in Three and Higher Dimensional Spaces

open access: yesAlgorithms, 2014
Based on the recent development of two dimensional ℓ1 major component detection and analysis (ℓ1 MCDA), we develop a scalable ℓ1 MCDA in the n-dimensional space to identify the major directions of star-shaped heavy-tailed statistical distributions with ...
Zhibin Deng   +3 more
doaj   +1 more source

Outlier-Aware Demand Prediction Using Recurrent Neural Network-Based Models and Statistical Approach

open access: yesIEEE Access, 2023
The paint industry comprises an elaborate supply chain involving various activities such as raw material procurement, manufacturing, and distribution. In addition, the accuracy of demand prediction significantly impacts supply chain management.
Yuseon Kim, Kyongseok Park
doaj   +1 more source

Use the robust RFCH method with a polychoric correlation matrix in structural equation modeling When you are ordinal data [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2022
Structural Equation Modeling is a statistical methodology commonly used in the social and administrative sciences and all other.   In this research, the researcher made a comparison between methods of estimation Unweighted Least Squares with Mean and ...
Omar Salim, Mohammed Mohammed
doaj   +1 more source

On replacement of outliers and missing values in time series

open access: yesEQA, 2023
Presence of missing values and occurrence of outliers in time series cause many hindrances in the analysis of data. Several methods are proposed for determining estimates to replace the missing values and outliers.
Loganathan Appaia, Sumithra Palraj
doaj   +1 more source

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