Results 41 to 50 of about 13,167,523 (376)

Density [PDF]

open access: yesThe Analyst, 1889
n ...
openaire   +2 more sources

Entropy and Density [PDF]

open access: yesProceedings of the American Mathematical Society, 1971
We prove that for any r r , “ entropy = r \operatorname {entropy} = r ” is a dense condition in the uniform topology.
openaire   +3 more sources

On the density dependence of the mean density approximation [PDF]

open access: yesJournal of Physics F: Metal Physics, 1985
The density dependence of the effective pair potential has been used to obtain generalisations of the mean density approximation for liquid structure factors at long wavelengths.
Michalewicz Marek, McLaughlin I.L.
openaire   +2 more sources

Monitoring BaTiO3 sintering using nanosecond pulsed electric field

open access: yesScience and Technology of Advanced Materials: Methods
Sintering is a critical process in ceramic fabrication, conducted in electric furnaces. However, the conditions within these furnaces remain largely unobservable, necessitating the development of real-time monitoring techniques.
Hiroyuki Saito   +7 more
doaj   +1 more source

Screening in orbital-density-dependent functionals

open access: yes, 2017
Electronic-structure functionals that include screening effects, such as Hubbard or Koopmans' functionals, require to describe the response of a system to the fractional addition or removal of an electron from an orbital or a manifold. Here, we present a
Colonna, Nicola   +3 more
core   +3 more sources

On Estimation of a Probability Density Function and Mode

open access: yes, 1962
: Given a sequence of independent identically distributed random variables with a common probability density function, the problem of the estimation of a probability density function and of determining the mode of a probability function are discussed ...
E. Parzen
semanticscholar   +1 more source

THICKET DENSITY [PDF]

open access: yesThe Journal of Symbolic Logic, 2021
AbstractWe define a new type of “shatter function” for set systems that satisfies a Sauer–Shelah type dichotomy, but whose polynomial-growth case is governed by Shelah’s two-rank instead of VC dimension. We identify the least exponent bounding the rate of growth of the shatter function, the quantity analogous to VC density, with Shelah’s $\omega ...
openaire   +4 more sources

A comparison of normalization methods for high density oligonucleotide array data based on variance and bias

open access: yesBioinform., 2003
MOTIVATION When running experiments that involve multiple high density oligonucleotide arrays, it is important to remove sources of variation between arrays of non-biological origin. Normalization is a process for reducing this variation. It is common to
B. Bolstad   +3 more
semanticscholar   +1 more source

On densities and gaps

open access: yesJournal of Number Theory, 1987
The authors investigate certain relations between the asymptotic densities of subsets of a set \(A=\{m_ 1,m_ 2,...\}\) of positive integers and the lengths of gaps in A by means of the ''analytical'' properties of the two-dimensional set \(S(A)=\{(\underline d(B),\bar d(B))\in {\mathbb{R}}^ 2\); \(B\subseteq A\}\), where ḏ(B) and \(\bar d(B)\) denote ...
Georges Grekos, Bodo Volkmann
openaire   +2 more sources

Self-interaction correction to density-functional approximations for many-electron systems

open access: yes, 1981
exchange and correlation, are not. We present two related methods for the self-interaction correction (SIC) of any density functional for the energy; correction of the self-consistent one-electron potenial follows naturally from the variational principle.
J. Perdew, A. Zunger
semanticscholar   +1 more source

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