Wyniki wyszukiwania dla: FRACTAL CURVES

• Crystallization of space: Space-time fractals from fractal arithmetic

  Publikacja

  • D. Aerts
  • M. Czachor
  • M. Kuna

  - CHAOS SOLITONS & FRACTALS - Rok 2016

  Fractals such as the Cantor set can be equipped with intrinsic arithmetic operations (addition, subtraction, multiplication, division) that map the fractal into itself. The arithmetics allows one to define calculus and algebra intrinsic to the fractal in question, and one can formulate classical and quantum physics within the fractal set. In particular, fractals in space-time can be generated by means of homogeneous spaces associated...

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• Bifractal receiver operating characteristic curves: a formula for generating receiver operating characteristic curves in credit-scoring contexts

  Publikacja

  • B. Kochański

  - Journal of Risk Model Validation - Rok 2021

  This paper formulates a mathematical model for generating receiver operating characteristic (ROC) curves without underlying data. Credit scoring practitioners know that the Gini coefficient usually drops if it is only calculated on cases above the cutoff. This fact is not a mathematical necessity, however, as it is theoretically possible to get an ROC curve that keeps the same Gini coefficient no matter how big a share of lowest...

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• Facial features extraction for color, frontal images

  Publikacja

  • M. Papaj
  • A. Czyżewski

  - Rok 2011

  The problem of facial characteristic features extraction is discussed. Several methods of features extraction for color en--face photographs are discussed. The methods are based mainly on the colors features related to the specific regions of the human face. The usefulness of presented methods was tested on a database of en--face photographs consisting of 100 photographs.

• Simple Fractal Calculus from Fractal Arithmetic

  Publikacja

  • D. Aerts
  • M. Czachor
  • M. Kuna

  - REPORTS ON MATHEMATICAL PHYSICS - Rok 2018

  Non-Newtonian calculus that starts with elementary non-Diophantine arithmetic operations of a Burgin type is applicable to all fractals whose cardinality is continuum. The resulting definitions of derivatives and integrals are simpler from what one finds in the more traditional literature of the subject, and they often work in the cases where the standard methods fail. As an illustration, we perform a Fourier transform of a real-valued...

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• Violence at the workplace—a questionnaire survey of nurses

  Publikacja

  • D. Merecz
  • J. Rymaszewska
  • A. Mościcka
  • A. Kiejna
  • J. Jarosz-Nowak

  - EUROPEAN PSYCHIATRY - Rok 2006

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• Waves Along Fractal Coastlines: From Fractal Arithmetic to Wave Equations

  Publikacja

  • M. Czachor

  - ACTA PHYSICA POLONICA B - Rok 2019

  Beginning with addition and multiplication intrinsic to a Koch-type curve, we formulate and solve wave equation describing wave propagation along a fractal coastline. As opposed to examples known from the literature, we do not replace the fractal by the continuum in which it is embedded. This seems to be the first example of a truly intrinsic description of wave propagation along a fractal curve. The theory is relativistically...

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• Fractal local fields in random composites

  Publikacja

  • N. Rylko

  - COMPUTERS & MATHEMATICS WITH APPLICATIONS - Rok 2015

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• University of the future: a fractal oganization of knowledge

  Publikacja

  • A. Binsztok
  • K. Leja
  • E. Szczerbicki

  - Rok 2007

  W opracowaniu przedstawiono wizję uniwersytetu przyszłości jako organizacji fraktalnej. Pokazano cechy wspólne organizacji fraktalnej i uniwersytetu ewoluującego w kierunku organizacji podporzadkowanej wiedzy.

• Journal of Fractal Geometry

  Czasopisma

  ISSN: 2308-1309 , eISSN: 2308-1317

• Generating fractal tiles using Voronoi diagrams

  Publikacja

  • T. Dobrowolski

  - Rok 2007

  Praca opisuje szczególną klasę podziałów powierzchni n-wymiarowego torusa na komórki o fraktalnym brzegu. Zbiór komórek przejawia nietypowe własności samopodobieństwa, może zostać użyty do wypełnienia przestrzeni R^n w sposób periodyczny lub aperiodyczny ze zmienną gęstością podziałów. Zaproponowany został algorytm do generowania takich podziałów używając diagramów Woronoja. Opisana metoda może mieć zastosowania w grafice komputerowej.

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