Results 1 to 10 of about 2,597 (122)

Uniform Generators, Symbolic Extensions with an Embedding, and Structure of Periodic Orbits [PDF]

open access: yesJournal of Dynamics and Differential Equations, 2018
44 ...
Burguet, David, Downarowicz, Tomasz
openaire   +3 more sources

General type of a uniform and reversible representation of chemical structures [PDF]

open access: yesAnalytica Chimica Acta, 1997
In any type of modelling (be classical or by artificial neural networks) involving chemical structures and their corresponding properties, the first problem encountered is the representation of chemical structures. A good structure representation should have different code for each 3-D structure (uniqueness), it should have the same number of variables
Jure Zupan, Marjana Novič
openaire   +1 more source

Reflectance, illumination, and appearance in color constancy

open access: yesFrontiers in Psychology, 2014
We studied color constancy using a pair of identical 3-D Color Mondrian displays. We viewed one 3-D Mondrian in nearly uniform illumination, and the other in directional, nonuniform illumination.
John J. McCann   +2 more
doaj   +1 more source

On pseudometrics for generalized uniform structures [PDF]

open access: yesProceedings of the American Mathematical Society, 1965
In [1] Alfsen and Njastad generalized the concept of a uniform structure 'A on a set S, replacing the intersection axiom for uniform structures by the weaker condition: (0) Given subsets Al, * * *, An of S and U1, * , Un in cA, there exists U in Al such that U(A ) C U(A ) for i = 1, , n.
openaire   +1 more source

$4$-uniform BCT permutations from generalized butterfly structure

open access: yesCoRR, 2020
As a generalization of Dillon's APN permutation, butterfly structure and generalizations have been of great interest since they generate permutations with the best known differential and nonlinear properties over the field of size $2^{4k+2}$. Complementary to these results, we show in this paper that butterfly structure, more precisely the closed ...
Nian Li 0005   +3 more
openaire   +2 more sources

Membrane lipid composition and cellular function.

open access: yesJournal of Lipid Research, 1985
Membrane fatty acid composition, phospholipid composition, and cholesterol content can be modified in many different kinds of intact mammalian cells.
A A Spector, M A Yorek
doaj   +1 more source

Higher dimensional discrete Cheeger inequalities

open access: yesJournal of Computational Geometry, 2015
For graphs there exists a strong connection between spectral and combinatorial expansion properties. This is expressed, e.g., by the discrete Cheeger inequality, the lower bound of which states that $\lambda(G) \leq h(G)$, where $\lambda(G)$ is the ...
Anna Gundert, May Szedlák
doaj   +1 more source

Controlled non-uniform random generation of decomposable structures

open access: yesTheoretical Computer Science, 2010
Consider a class of decomposable combinatorial structures, using different types of atoms $\Atoms = \{\At_1,\ldots ,\At_{|{\Atoms}|}\}$. We address the random generation of such structures with respect to a size $n$ and a targeted distribution in $k$ of its \emph{distinguished} atoms. We consider two variations on this problem. In the first alternative,
Denise, Alain   +2 more
openaire   +5 more sources

Random generation of combinatorial structures from a uniform distribution

open access: yesTheoretical Computer Science, 1986
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mark Jerrum   +2 more
openaire   +1 more source

Uniform random generation of decomposable structures using floating-point arithmetic

open access: yesTheoretical Computer Science, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Denise, Alain, Zimmermann, Paul
openaire   +3 more sources

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