Results 71 to 80 of about 807,423 (305)
Finite mixture modeling using shape mixtures of the skew scale mixtures of normal distributions
Communications in Statistics - Simulation and Computation, 2019 This paper introduces the shape mixtures of the skew scale mixtures of normal distribution which are contained additional shape parameters to regulate skewness and kurtosis. We present a finite mixture model for this new family of distributions, which is a novel model-based tool for clustering heterogeneous data in the presence of skewed and heavy ...
Mostafa Tamandi, Ahad Jamalizadeh
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Evaluation of in-cylinder mixture homogeneity in a diesel HCCI engine – A CFD analysis
Engineering Science and Technology, an International Journal, 2016 Performance and emission characteristics of HCCI engines depend on achieving a good in-cylinder homogeneous mixture. The formation of in-cylinder mixture depends on many engine parameters, which need optimization.
N. Ramesh, J.M. Mallikarjuna
doaj +1 more source
Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations
FEBS Letters, EarlyView.The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas +6 more
wiley +1 more source
FEBS Letters, EarlyView.An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley +1 more source
Study of the material property of fish scale collagen by composing with other collagens
四川大学学报. 自然科学版, 2016 In the present study, porcine and bovine collagen were mixed respectively with the matrix composed of fish scale type I collagen, and then the properties of the reconstructed collagen sponge were tested. The fourier transform infrared spectroscopy (FTIR)
DU Tian-Ming +3 more
doaj
FEBS Letters, EarlyView.We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace +6 more
wiley +1 more source
Reparameterized Scale Mixture of Rayleigh Distribution Regression Models with Varying Precision
MathematicsIn this paper, we introduce a new parameterization for the scale mixture of the Rayleigh distribution, which uses a mean linear regression model indexed by mean and precision parameters to model asymmetric positive real data. To test the goodness of fit,
Pilar A. Rivera +4 more
doaj +1 more source
FEBS Letters, EarlyView.Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley +1 more source
Breakdown points for maximum likelihood estimators of location-scale mixtures
, 2004 ML-estimation based on mixtures of Normal distributions is a widely used tool for cluster analysis. However, a single outlier can make the parameter estimation of at least one of the mixture components break down. Among others, the estimation of mixtures
Hennig, C
core
Scaling Laws for Optimal Data Mixtures
CoRRLarge foundation models are typically trained on data from multiple domains, with the data mixture--the proportion of each domain used--playing a critical role in model performance. The standard approach to selecting this mixture relies on trial and error, which becomes impractical for large-scale pretraining.
Mustafa Shukor +6 more
openaire +2 more sources