Results 41 to 50 of about 3,425 (184)
High Voltage, EarlyView.ABSTRACT Diagnosing high‐impedance ground faults (HIGFs) in distribution networks is extremely challenging because high transition resistance significantly reduces electrical signal strength and unpredictable initial fault phase angles coupled with asymmetric voltage disturbances often lead to misclassification.
Zhengyang Li +5 more
wiley +1 more source
Monochromatic Sums and Products of Polynomials
Discrete AnalysisMonochromatic sums and products of polynomials, Discrete Analysis 2024:5, 7 pp. An early result in Ramsey theory, Schur's theorem, states that if the positive integers are finitely coloured, then there will always be $x$ and $y$ such that $x,y$ and $x ...
Ryan Alweiss
doaj +1 more source
A unified analytical framework for Mössbauer synchrotron sources
Journal of Synchrotron Radiation, EarlyView.We present a unified analytical framework for Mössbauer synchrotron and X‐ray free‐electron laser sources that provides exact, rotationally invariant expressions for resonance energies and transition probabilities in mixed magnetic dipole–electric quadrupole interactions without Hamiltonian diagonalization.
Krzysztof R. Szymański
wiley +1 more source
Interval Arithmetic Error Estimation for the Solution of Cauchy Singular Integral Equations
, 2012 [[abstract]]Finite element method with a posteriori estimation using interval arithmetic is discussed for a Fredholm integral equation of the second kind. This approach is general.
Babuška, Ivo; Liu, Kang-Man
core
Network Structure and the Efficiency Gains from Mergers: Evidence from U.S. Freight Railroads
The RAND Journal of Economics, EarlyView.ABSTRACT The trade‐off between market power and efficiency gains is central to antitrust analyses of mergers, but empirical evidence quantifying efficiencies remains limited. Using transaction‐level data from U.S. freight railroads (1985–2005), this article quantifies merger‐induced cost efficiencies, driven mainly by eliminating inter‐railroad ...
Yanyou Chen
wiley +1 more source
THE PROBLEM OF NEW PROPERTIES OF NUMBERS
Надежность и качество сложных системBackground. The proposed work is devoted to research to clarify the axiomatization of arithmetic in connection with the presence of special assumptions in it.
L.G. Sushkov
doaj +1 more source
Numerical Modeling of Skin Tissue Heating Using the Interval Finite Difference Method
, 2013 Numerical analysis of heat transfer processes proceeding in a nonhomogeneous biological tissue domain is presented. In particular, the skin tissue domain subjected to an external heat source is considered. The problem is treated as an axially-symmetrical
B. Mochnacki, Alicja Piasecka Belkhayat
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British Journal of Educational Psychology, EarlyView.Abstract Background Conceptual and procedural knowledge are two distinct types of mathematical knowledge. Measuring them with sufficient discriminant validity is challenging because they are typically highly correlated. Prior studies have demonstrated discriminant validity of paper‐and‐pencil measures separately for fractions and algebra.
Michael D'Erchie +3 more
wiley +1 more source
A Variable-Precision, Interval Arithmetic Processor
, 1996 ÐTraditional computer systems often suffer from roundoff error and catastrophic cancellation in floating point computations. These systems produce apparently high precision results with little or no indication of the accuracy.
Michael J. Schulte, Earl E. Swartzl
core
An interval finite element approach for the calculation of envelope frequency response functions
, 2004 This paper focusses on the application of the interval finite element method in dynamic analyses. It describes a methodology for calculating frequency response function envelopes from a finite element model containing imprecise parameters defined as ...
Vandepitte, Dirk, Moens, David
core +1 more source