Results 11 to 20 of about 838,874 (266)
Remote Sensing, 2021 In GNSS analysis, the tropospheric delay is parameterized by applying mapping functions (MFs), zenith delays, and tropospheric gradients. Thereby, the wet and hydrostatic MF are derived under the assumption of a spherically layered atmosphere.
Florian Zus +4 more
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Education Sciences, 2020 Often, important decisions regarding accountability and placement of students in performance categories are made on the basis of test scores generated from tests, therefore, it is important to evaluate the validity of the inferences derived from test ...
Amin Mousavi, Ying Cui
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Frontiers in Psychology, 2021 This article addresses a fundamental question in the study of socio-emotional skills, personality traits, and related constructs: “To score or not to score?” When researchers use test scores or scale scores (i.e., fallible point estimates of a skill or ...
Nivedita Bhaktha, Clemens M. Lechner
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The Viability of Oil Extraction from Trinidad Tar Sands by Radio Frequency Heating: A Simulation Approach [PDF]
Journal of Petroleum Science and Technology, 2018 Trinidad has tar sand resources of about 2 billion barrels of oil on land in the Parrylands/Guapo and Brighton areas. With an oil price of over USD 25 per barrel, the commercial extraction of oil from Trinidad tar sands is viable, but it requires a ...
Tamitha Ramcharan +2 more
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CoRR, 2018 Eye Movement analysis with Hidden Markov Models (EMHMM) is a method for modeling eye fixation sequences using hidden Markov models (HMMs). In this report, we run a simulation study to investigate the estimation error for learning HMMs with variational Bayesian inference, with respect to the number of sequences and the sequence lengths.
Antoni B. Chan, Janet H. Hsiao
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Crash energy absorption improvement of lightweight structure by using truss core panel
Nihon Kikai Gakkai ronbunshu, 2014 In this paper, the new type lightweight structure by using truss core panel is proposed. By using general dynamic analysis software LS-DYNA and response surface optimization method to determine the optimal structure of proposed lightweight structure, the
Yang YANG +3 more
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Tests for Trend: A Simulation Study [PDF]
Communications in Statistics - Simulation and Computation, 2010 In this study we use the wavelet analysis to construct a test statistic to test for the existence of a trend in the series. We also propose a new approach for testing the presence of trend based on the periodogram of the data. Since we are also interested in the presence of a long-memory process among the data, we study the properties of our test ...
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Preservation of Genetic Variation in a Breeding Population for Long-Term Genetic Gain
G3: Genes, Genomes, Genetics, 2020 Genomic selection has been successfully implemented in plant and animal breeding. The transition of parental selection based on phenotypic characteristics to genomic selection (GS) has reduced breeding time and cost while accelerating the rate of genetic
David Vanavermaete +3 more
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A Review of fMRI Simulation Studies
PLoS ONE, 2014 Simulation studies that validate statistical techniques for fMRI data are challenging due to the complexity of the data. Therefore, it is not surprising that no common data generating process is available (i.e. several models can be found to model BOLD activation and noise).
Welvaert, Marijke, Rosseel, Yves
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Frontiers in Psychology, 2017 We investigated the effects of violations of the sphericity assumption on Type I error rates for different methodical approaches of repeated measures analysis using a simulation approach.
Nicolas Haverkamp, André Beauducel
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