Results 41 to 50 of about 1,456,033 (346)

Testing for Homogeneity in Mixture Models [PDF]

open access: yes, 2016
Statistical models of unobserved heterogeneity are typically formalized as mixtures of simple parametric models and interest naturally focuses on testing for homogeneity versus general mixture alternatives.
Gu, Jiaying   +2 more
core   +1 more source

X-ray Microtomography as a Non-Invasive Method for Evaluating the Stability of Commercial Effervescent Tablets

open access: yesEngineering Proceedings, 2023
In the present study, a non-invasive X-ray microtomography technique was applied to assess the internal structure of commercial effervescent tablets with vitamin C.
Michał Meisner   +3 more
doaj   +1 more source

Homogeneity and h -homogeneity

open access: yesTopology and its Applications, 2013
A topological space \(X\) is \textit{homogeneous} if each of its points can be carried to any other via a homeomorphism of the space; \(X\) is \textit{\(h\)-homogeneous} if it is homeomorphic to each of its nonempty clopen subspaces. The author investigates conditions under which these two notions are related for zero-dimensional spaces. The first main
openaire   +4 more sources

Functionally Graded Media [PDF]

open access: yes, 2007
The notions of uniformity and homogeneity of elastic materials are reviewed in terms of Lie groupoids and frame bundles. This framework is also extended to consider the case Functionally Graded Media, which allows us to obtain some homogeneity conditions.
Campos, Cedric M.   +2 more
core   +2 more sources

Feedstocks of Aluminum and 316L Stainless Steel Powders for Micro Hot Embossing

open access: yesMetals, 2018
In metal powder, shaping the preparation and characterization of the feedstock is an aspect commonly recognized as fundamental. An optimized composition is required to ensure the successful shaping of the feedstock.
Omid Emadinia   +2 more
doaj   +1 more source

Simulation analysis of uniformity of optical sphere polishing motion trajectory

open access: yesJin'gangshi yu moliao moju gongcheng, 2023
In order to improve the processing quality, processing efficiency and reduce the cost wastage of the dome surface, the effect of each motion parameter on the uniformity of material removal from the optical dome surface during the polishing process was ...
Weiming WANG, Zhen LI, Qingzhong LI
doaj   +1 more source

Homogeneous and Non-homogeneous Algorithms [PDF]

open access: yes, 2012
This (full) paper was accepted for publication in the 13th Panhellenic Conference on Informatics (PCI 2009), 10-12 September 2009, Corfu, Greece (8 pages)
openaire   +2 more sources

Homogeneity of Bilayer Graphene

open access: yes, 2012
We present non-linear transport measurements on suspended, current annealed bilayer graphene devices. Using a multi-terminal geometry we demonstrate that devices tend to be inhomogeneous and host two different electronic phases next to each other.
Freitag, Frank   +4 more
core   +1 more source

Homogeneity of dynamically defined wild knots [PDF]

open access: yes, 2005
In this paper we prove that a wild knot $K$ which is the limit set of a Kleinian group acting conformally on the unit 3-sphere, with its standard metric, is homogeneous: given two points $p, q\in{K}$ there exists a homeomorphism $f$ of the sphere such ...
Hinojosa, Gabriela, Verjovsky, Alberto
core   +3 more sources

The Chemical Homogeneity of Sun-like Stars in the Solar Neighborhood [PDF]

open access: yesAstrophysical Journal, 2018
The compositions of stars are a critical diagnostic tool for many topics in astronomy such as the evolution of our Galaxy, the formation of planets, and the uniqueness of the Sun.
M. Bedell   +11 more
semanticscholar   +1 more source

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