Results 11 to 20 of about 93,026 (137)

Covid-19 growth rate analysis: application of a low-complexity tool for understanding and comparing epidemic curves

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 2020
INTRODUCTION: The acceleration of new cases is important for the characterization and comparison of epidemic curves. The objective of this study was to quantify the acceleration of daily confirmed cases and death curves using the polynomial ...
Airandes de Sousa Pinto   +6 more
doaj   +1 more source

A nonsymmetric version of Okounkov's BC-type interpolation Macdonald polynomials [PDF]

open access: yes, 2019
Symmetric and nonsymmetric interpolation Laurent polynomials are introduced with the interpolation points depending on $q$ and a $n$-tuple of parameters $\tau=(\tau_1,\ldots,\tau_n)$.
Disveld, Niels   +2 more
core   +2 more sources

Indirect stabilization of weakly coupled systems with hybrid boundary conditions [PDF]

open access: yes, 2011
We investigate stability properties of indirectly damped systems of evolution equations in Hilbert spaces, under new compatibility assumptions. We prove polynomial decay for the energy of solutions and optimize our results by interpolation techniques ...
Alabau-Boussouira, F.   +2 more
core   +4 more sources

Polynomial Size Analysis of First-Order Shapely Functions [PDF]

open access: yes, 2009
We present a size-aware type system for first-order shapely function definitions. Here, a function definition is called shapely when the size of the result is determined exactly by a polynomial in the sizes of the arguments.
Albert   +18 more
core   +6 more sources

High order algorithms for numerical solution of fractional differential equations

open access: yesAdvances in Difference Equations, 2021
In this paper, two novel high order numerical algorithms are proposed for solving fractional differential equations where the fractional derivative is considered in the Caputo sense. The total domain is discretized into a set of small subdomains and then
Mohammad Shahbazi Asl   +2 more
doaj   +1 more source

A new deterministic model of strange stars [PDF]

open access: yes, 2014
The observed evidence for the existence of strange stars and the concomitant observed masses and radii are used to derive an interpolation formula for the mass as a function of the radial coordinate.
Chakraborty, Koushik   +4 more
core   +2 more sources

Computing knots by quadratic and cubic polynomial curves

open access: yesComputational Visual Media, 2020
A new method is presented to determine parameter values (knot) for data points for curve and surface generation. With four adjacent data points, a quadratic polynomial curve can be determined uniquely if the four points form a convex polygon.
Fan Zhang   +3 more
doaj   +1 more source

Tuples of disjoint NP-sets [PDF]

open access: yes, 2008
Disjoint NPUnknown control sequence '\mathsf' -pairs are a well studied complexity-theoretic concept with important applications in cryptography and propositional proof complexity.
Beyersdorff, O
core   +2 more sources

Ulam-Hyers stability of tuberculosis and COVID-19 co-infection model under Atangana-Baleanu fractal-fractional operator

open access: yesScientific Reports, 2023
The intention of this work is to study a mathematical model for fractal-fractional tuberculosis and COVID-19 co-infection under the Atangana-Baleanu fractal-fractional operator.
Arunachalam Selvam   +7 more
doaj   +1 more source

Hermite matrix in Lagrange basis for scaling static output feedback polynomial matrix inequalities [PDF]

open access: yes, 2010
Using Hermite's formulation of polynomial stability conditions, static output feedback (SOF) controller design can be formulated as a polynomial matrix inequality (PMI), a (generally nonconvex) nonlinear semidefinite programming problem that can be ...
Delibasi, Akin, Henrion, Didier
core   +2 more sources

Home - About - Disclaimer - Privacy