Results 41 to 50 of about 97,499 (261)
Advanced Engineering Materials, EarlyView.This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca +9 more
wiley +1 more source
From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices
Advanced Engineering Materials, EarlyView.Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle +3 more
wiley +1 more source
Evolution of zygotic linkage disequilibrium in a finite local population. [PDF]
PLoS ONE, 2013 One crucial feature of zygotic linkage disequilibrium (LD) analysis is its direct use of diploid genotyping data, irrespective of the type of mating system. Previous theories from an evolutionary perspective mainly focus on gametic LD, but the equivalent
Xin-Sheng Hu
doaj +1 more source
Chromodynamics of Cooperation in Finite Populations
PLoS ONE, 2007 The basic idea of tag-based models for cooperation is that individuals recognize each other via arbitrary signals, so-called tags. If there are tags of different colors, then cooperators can always establish new signals of recognition. The resulting "chromodynamics" is a mechanism for the evolution of cooperation.
Traulsen, A., Nowak, M.
openaire +5 more sources
On a Finite-Size Neuronal Population Equation
SIAM Journal on Applied Dynamical Systems, 2023 Population equations for infinitely large networks of spiking neurons have a long tradition in theoretical neuroscience. In this work, we analyze a recent generalization of these equations to populations of finite size, which takes the form of a nonlinear stochastic integral equation. We prove that, in the case of leaky integrate-and-fire (LIF) neurons
Valentin Schmutz +2 more
openaire +3 more sources
Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry
Advanced Functional Materials, EarlyView.In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite +5 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg +6 more
wiley +1 more source
Admissibility of Linear Predictors of Finite Population Parameters under Reflected Normal Loss Function [PDF]
Journal of Sciences, Islamic Republic of Iran, 2016 One of the most important prediction problems in finite population is the prediction of a linear function of characteristic values of a finite population.
R. Jafaraghaie, N. Nematollahi
doaj
An Admissible Estimator for The Variance of a Finite Population [PDF]
The Egyptian Statistical Journal, 1990 Following a line of argument of Basu (1971), an estimator for the population variance is proposed. This estimator is shown to be admissible using the technique given by Meeden and Ghosh (1984). It is also shown that this estimator reduces to an estimator
Reda Mazloum
doaj +1 more source
Extrapolating the profile of a finite population
CoRR, 2020 We study a prototypical problem in empirical Bayes. Namely, consider a population consisting of $k$ individuals each belonging to one of $k$ types (some types can be empty). Without any structural restrictions, it is impossible to learn the composition of the full population having observed only a small (random) subsample of size $m = o(k ...
Soham Jana +2 more
openaire +3 more sources