Results 31 to 40 of about 1,950,871 (308)

Total positivity of a kind of generalized Toric-Bernstein basis [PDF]

open access: yesLinear Algebra and its Applications, 2019
The normalized totally positive bases are widely used in many fields.Based on the generalized Vandermonde determinant, the normalized total positivity of a kind of generalized toric-Bernstein basis is proved, which is defined on a set of real points. By this result, the progressive iterative approximation property of the generalized toric-Bézier curve ...
Ying-Ying Yu, Hui Ma, Chun-Gang Zhu
openaire   +3 more sources

The neural basis of following advice [PDF]

open access: yes, 2011
Learning by following explicit advice is fundamental for human cultural evolution, yet the neurobiology of adaptive social learning is largely unknown. Here, we used simulations to analyze the adaptive value of social learning mechanisms, computational ...
Rieskamp, Jörg   +15 more
core   +1 more source

THE PHYSICAL BASIS OF THE POSITIVE PHOTOTROPISM OF PHYCOMYCES [PDF]

open access: yesJournal of General Physiology, 1933
A physical basis is demonstrated, in the case of a cylindrical cell illuminated with parallel light from one side, for greater photochemical action in the half of the cell farthest from the source of light, when the cell is surrounded by a medium of refractive index less than that of the cell.
openaire   +2 more sources

Structural Basis for Recognizing Phosphoarginine and Evolving Residue-Specific Protein Phosphatases in Gram-Positive Bacteria

open access: yesCell Reports, 2013
Many cellular pathways are regulated by the competing activity of protein kinases and phosphatases. The recent identification of arginine phosphorylation as a protein modification in bacteria prompted us to analyze the molecular basis of targeting ...
Jakob Fuhrmann   +6 more
doaj   +1 more source

Interpolation with circular basis functions

open access: yes, 2006
In this paper we consider basis function methods for solving the problem of interpolating data over distinct points on the unit circle. In the special case where the points are equally spaced we can appeal to the theory of circulant matrices which ...
Hubbert, Simon, Muller, S.
core   +1 more source

Molecular basis of a novel pigment trait in cichlid fishes [PDF]

open access: yes, 2014
The genetics underlying the evolution of novel morphological structures is a fascinating topic that has attracted the attention of many evolutionary biologists.
Pombo dos Santos, Maria Emília
core   +1 more source

保形分段三次多项式曲线的形状分析(Construction and analysis of a new class of shape-preserving piecewise cubic polynomial curves)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2018
This paper proposes a new class of shape-preserving piecewise cubic polynomial curves with both local and global shape control parameters. By presetting the properties of its basis functions and then solving equations,a set of polynomial basis functions ...
YANLanlan(严兰兰)   +1 more
doaj   +1 more source

Rapid evaluation of radial basis functions

open access: yes, 2005
Over the past decade, the radial basis function method has been shown to produce high quality solutions to the multivariate scattered data interpolation problem.
Baxter, Brad J.C.   +3 more
core   +1 more source

Simultaneously Computing a Maximal Independent Set Modulo an Ideal and a Gröbner Basis of the Ideal

open access: yesMathematics
To solve problems on a positive-dimensional ideal, I⊂k[X], a maximal independent set U⊂X modulo I, and a Gröbner basis of Ie, where Ie is the extension of I to k(U)[V](V:=X∖U), are widely used. As far as we know, they are usually computed separately, i.e.
Ping Liu, Baoxin Shang, Shugong Zhang
doaj   +1 more source

Immunohistophenotyping and 18F-FDG PET-CT in characterizing malignant breast tumors: preliminary results [PDF]

open access: yesWorld Cancer Research Journal, 2020
Objective: Malignant breast tumors are associated with a poor prognosis. Accurate tumor localization and characterization of the disease phenotype may avert inappropriate futile surgery and toxic treatment.
A. Fathinul Fikri   +2 more
doaj   +1 more source

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