Results 11 to 20 of about 95,120 (116)

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

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

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

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

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

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

A 2D Nested Array Based DOA Estimator for Incoherently Distributed Sources via Sparse Representation Utilizing L1-Norm

open access: yesInternational Journal of Antennas and Propagation, 2019
Nested arrays are sparse arrays composed of subarrays with nonuniform sensor spacing. Compared with traditional uniform arrays, nested arrays have more degree of freedoms (DOFs) and larger apertures.
Tao Wu   +4 more
doaj   +1 more source

Nested Bi-level scheduling strategy for energy storage systems in hybrid microgrid considering uncertainties of battery dynamic performances

open access: yesInternational Journal of Electrical Power & Energy Systems
This paper proposed a nested bi-Level scheduling strategy for energy storage systems in hybrid microgrid considering uncertainties of battery dynamic performances.
Jiazhi Lei, Zhao Liu
doaj   +1 more source

A linear mixed model, with non-stationary mean and covariance, for soil potassium based on gamma radiometry [PDF]

open access: yesBiogeosciences, 2010
In this paper we present a linear mixed model for the potassium content of soil across a large region of eastern England in which the mean is modelled as a linear function of the passive gamma-ray emissions of the earth surface in the energy interval ...
K. A. Haskard, B. G. Rawlins, R. M. Lark
doaj   +1 more source

Home - About - Disclaimer - Privacy