Results 21 to 30 of about 91,736 (294)

Reconstructions of rainy season precipitation and flood season streamflow in the headwater catchment of the Yellow River and their evolution characteristics on a millennium scale

open access: yesShui kexue jinzhan, 2022
The intra-annual precipitation of the headwater catchment of the Yellow River basin (HCYRB) occurs in a concentrated manner, which leads to a high flood risk.
Wenzhuo WANG   +5 more
doaj   +1 more source

Bayesian estimators in uncertain nested error regression models

open access: yesJournal of Multivariate Analysis, 2017
Nested error regression models are useful tools for analysis of grouped data, especially in the case of small area estimation. This paper suggests a nested error regression model using uncertain random effects in which the random effect in each area is expressed as a mixture of a normal distribution and a positive mass at $0$.
Shonosuke Sugasawa, Tatsuya Kubokawa
openaire   +3 more sources

On non-negative estimation of variance components in mixed linear models

open access: yesJournal of Advanced Research, 2016
Alternative estimators have been derived for estimating the variance components according to Iterative Almost Unbiased Estimation (IAUE). As a result two modified IAUEs are introduced.
Heba A. El Leithy   +2 more
doaj   +1 more source

GNAQPMS-Hg v1.0, a global nested atmospheric mercury transport model: model description, evaluation and application to trans-boundary transport of Chinese anthropogenic emissions [PDF]

open access: yesGeoscientific Model Development, 2015
Atmospheric mercury (Hg) is a toxic pollutant and can be transported over the whole globe due to its long lifetime in the atmosphere. For the purpose of assessing Hg hemispheric transport and better characterizing regional Hg pollution, a global nested ...
H. S. Chen   +7 more
doaj   +1 more source

On testing random effects in the nested-error regression model

open access: yesCommunications in Statistics - Simulation and Computation, 2017
We derive an exact F-test for random effects in the nested-error regression model. The derivation utilizes a matrix decomposition that offers a transformation of the response vector into two indepe...
Hall, Peter, Maiti, Tapabrata
openaire   +6 more sources

Novel metrics for growth model selection

open access: yesEmerging Themes in Epidemiology, 2018
Background Literature surrounding the statistical modeling of childhood growth data involves a diverse set of potential models from which investigators can choose.
Matthew R. Grigsby   +6 more
doaj   +1 more source

Bayesian system identification for structures considering spatial and temporal correlation

open access: yesData-Centric Engineering, 2023
The decreasing cost and improved sensor and monitoring system technology (e.g., fiber optics and strain gauges) have led to more measurements in close proximity to each other.
Ioannis Koune   +3 more
doaj   +1 more source

Partitioning Error Spaces in Linear Models (Error Contrasts) [PDF]

open access: yesThe Egyptian Statistical Journal, 1995
This paper introduces the general idea of error contrasts, their properties, and uses. Error contrasts is a way for partitioning the error space and depend on it's canonical representation, that is the vector space of linear unbiased estimators of zero ...
El-Houssainy Rady
doaj   +1 more source

UNBALANCED NESTED COMPONENT ERROR MODEL FOR ESTIMATING PEST DAMAGE FUNCTIONS [PDF]

open access: yes, 2017
A recently developed nested error component model for unbalanced panel data is used to estimate insect damage functions. The model estimates the separate random effects for location and year on the variability of yield loss and has smaller standard ...
Yang, Juan, Mitchell, Paul D.
core   +1 more source

Decentralized Integral Nested Sliding Mode Control for Time Varying Constrained Modular and Reconfigurable Robot

open access: yesAdvances in Mechanical Engineering, 2015
This paper presents a novel decentralized integral nested sliding mode control approach for a time varying constrained modular and reconfigurable robot (MRR) and addresses the problem of joint trajectory tracking control of the MRR with strongly coupled ...
Bo Dong, Yuanchun Li
doaj   +1 more source

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