Results 31 to 40 of about 51,101 (296)

Partial covering of a circle by equal circles. Part II: The case of 5 circles

open access: yesJournal of Computational Geometry, 2014
How must n equal circles of given radius r be placed so that they cover as great a part of the area of the unit circle as possible? In this Part II of a two-part paper, a conjectured solution of this problem for n = 5 is given for r varying from the ...
Zsolt Gáspár   +2 more
doaj   +1 more source

Covering Numbers for Support Vector Machines [PDF]

open access: yes, 1999
Support vector (SV) machines are linear classifiers that use the maximum margin hyperplane in a feature space defined by a kernel function. Until recently, the only bounds on the generalization performance of SV machines (within Valiant’s probably ...
Shawe-Taylor, John   +7 more
core   +1 more source

Frobenius Problem and the Covering Radius of a Lattice [PDF]

open access: yesDiscrete & Computational Geometry, 2007
12 pages; minor revisions; to appear in Discrete and Computational ...
Lenny Fukshansky, Sinai Robins
openaire   +2 more sources

How to Find the Covering Radius of Linear Codes over Finite Fields Using a Parity-Check Matrix in Parallel

open access: yesMathematics
We present a parallel algorithm for computing the covering radius of a linear [n,k]q code using its parity-check matrix. The method is based on the systematic generation of syndromes associated with linear combinations of columns of the parity-check ...
Iliya Bouyukliev   +2 more
doaj   +1 more source

A New Method to Determine Generalized Basic Probability Assignment in the Open World

open access: yesIEEE Access, 2019
Dempster-Shafer evidence theory (D-S theory) is a very useful tool to solve problems in the field of information fusion. But how to determine generalized basic probability assignment (GBPA) more accurately and efficiently in D-S theory is still a matter ...
Renliang Sun, Yong Deng
doaj   +1 more source

The outer dusty edge of accretion disks in active galactic nuclei

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Recent models for the inner structure of active galactic nuclei (AGN) aim at connecting the outer region of the accretion disk with the broad-line region and dusty torus through a radiatively accelerated, dusty outflow.
Hermine Landt
doaj   +1 more source

The Covering Radius of Group Codes

open access: yesIEEE Transactions on Information Theory
Group codes form an important class of spherical codes, consisting of a single orbit under a subgroup of the orthogonal group. They have been studied by (Mittelholzer-Lahtonen, 1996) in the case of Coxeter groups for their packing radius. We study them here for the same groups, with respect to their covering radius.
Minjia Shi   +3 more
openaire   +2 more sources

On Certain Subclasses of Analytic Functions Defined by Differential Subordination

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
We introduce and study certain subclasses of analytic functions which are defined by differential subordination. Coefficient inequalities, some properties of neighborhoods, distortion and covering theorems, radius of starlikeness, and convexity for these
Hesam Mahzoon
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Calculation of NaI(Tl) detector full-energy peak efficiency using the efficiency transfer method for small radioactive cylindrical sources [PDF]

open access: yesNuclear Technology and Radiation Protection, 2016
A direct analytical mathematical method is introduced to calculate the efficiency of gamma ray cylindrical detectors. The efficiency expression is deduced through a straightforward mathematical approach.
Gouda Mona M.   +4 more
doaj   +1 more source

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