Results 61 to 70 of about 49,095 (248)

Thermodynamics of a Schwarzschild black hole surrounded by quintessence in the generalized uncertainty principle framework

European Physical Journal C: Particles and Fields
We investigate the thermodynamics of a Schwarzschild black hole, surrounded by the quintessence energy-matter in the linear and quadratic generalized uncertainty principle framework.
Soham Sen, Abhijit Dutta, Sunandan Gangopadhyay   +2 more
doaj   +1 more source

Mean-variance-skewness in destination efficiency framework: The case of France

European Journal of Tourism Research, 2016
Number of overnight stays is an important variable in the context of tourism destination competitiveness. Recently, researchers suggested the mean-variance approach as a tool to measure the efficiency of this variable.
Louisa Andriamasy, Hanitra Rakotondramaro   +1 more
doaj   +1 more source

Small-area estimation based on natural exponential family quadratic variance function models and survey weights [PDF]

Biometrika, 2004
SUMMARY We propose pseudo empirical best linear unbiased estimators of small-area means based on natural exponential family quadratic variance function models when the basic data consist of survey-weighted estimators of these means, area-specific covariates and certain summary measures involving the weights.
openaire   +1 more source

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

Advanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

Some measures of robustness for unbiased estimators in one-parameter natural exponential families with quadratic variance function

Journal of Mathematical Analysis and Applications, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Barranco-Chamorro, I., Moreno-Rebollo, J.L.   +1 more
openaire   +1 more source

Continuous Stiffness Graded Metal–Ceramic Femoral Stems: UMAT‐Based Design and Finite Element Assessment

Advanced Engineering Materials, EarlyView.
Functionally graded metal–ceramic femoral stems are engineered through continuous UMAT‐based stiffness tailoring, eliminating discrete material interfaces while enhancing biomechanical compatibility. Low‐index power‐law gradation optimizes load transfer, reduces stress shielding, and controls implant–bone micromotion, highlighting a materials‐design ...
Rihem Nouira, Sameh Elleuch, Hanen Jrad
wiley   +1 more source

Genetic evaluation and selection response for growth in meat-type quail through random regression models using B-spline functions and Legendre polynomials

Animal, 2018
The objective was to estimate (co)variance functions using random regression models (RRM) with Legendre polynomials, B-spline function and multi-trait models aimed at evaluating genetic parameters of growth traits in meat-type quail.
L.F.M. Mota, P.G.M.A. Martins, T.O. Littiere, L.R.A. Abreu, M.A. Silva, C.M. Bonafé   +5 more
doaj   +1 more source

On unbiased Lehmann-estimators of a variance of an exponential distribution with quadratic loss function

Trabajos de Estadistica Y de Investigacion Operativa, 1982
Lehmann in [4] has generalised the notion of the unbiased estimator with respect to the assumed loss function. In [5] Singh considered admissible estimators of function λ-r of unknown parameter λ of gamma distribution with density $$f\left( {x|\lambda , b} \right) = \lambda ^{b -
openaire   +3 more sources

Counterintuitive Fluorescence Blue Shift in Symmetry Breaking Dicationic Bis(indolium) with Two‐Photon Absorption Properties for NIR Living Cell Imaging

Advanced Materials, EarlyView.
Highly water‐soluble dicationic bis(indolium) dyes have been prepared, showing excellent two‐photon absorption and light emission. Their fluorescence behavior discloses an unusual increasing blue shift with increasing solvent polarity, which, in parallel, is beneficial for enhanced detection in biological media.
Carlos Benitez‐Martin, Jose M. Marin‐Beloqui, Juan T. López Navarrete, Juan Casado, Francisco Najera, Ezequiel Perez‐Inestrosa   +5 more
wiley   +1 more source

Analyzing and interpreting spatial and temporal variability of the United States county population distributions using Taylor's law.

PLoS ONE, 2019
We study the spatial and temporal variation of the human population in the United States (US) counties from 1790 to 2010, using an ecological scaling pattern called Taylor's law (TL).
Meng Xu, Joel E Cohen
doaj   +1 more source