Results 51 to 60 of about 168,604 (284)

Stagewise crop yield prediction with multisource functional indices

Canadian Journal of Statistics, EarlyView.
Abstract Index insurance design involves integrating weather data, soil moisture, phenology information, and satellite imagery, which presents challenges in data fusion. This article addresses the modelling of multisource functional indices of varying lengths by constructing a stagewise ensemble of sequential models.
Jing Zou, Ostap Okhrin
wiley   +1 more source

Indexed Induction-Recursion [PDF]

The Journal of Logic and Algebraic Programming, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dybjer, Peter, Setzer, Anton
openaire   +3 more sources

Self‐Similar Blowup for the Cubic Schrödinger Equation

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We give a rigorous proof for the existence of a finite‐energy, self‐similar solution to the focusing cubic Schrödinger equation in three spatial dimensions. The proof is computer‐assisted and relies on a fixed point argument that shows the existence of a solution in the vicinity of a numerically constructed approximation.
Roland Donninger, Birgit Schörkhuber
wiley   +1 more source

A Survey on Teaching and Learning Recursive Programming

Informatics in Education, 2014
We survey the literature about the teaching and learning of recursive programming. After a short history of the advent of recursion in programming languages and its adoption by programmers, we present curricular approaches to recursion, including a ...
Christian RINDERKNECHT
doaj   +1 more source

Infinitely many local higher symmetries without recursion operator or master symmetry: integrability of the Foursov--Burgers system revisited

, 2008
We consider the Burgers-type system studied by Foursov, w_t &=& w_{xx} + 8 w w_x + (2-4\alpha)z z_x, z_t &=& (1-2\alpha)z_{xx} - 4\alpha z w_x + (4-8\alpha)w z_x - (4+8\alpha)w^2 z + (-2+4\alpha)z^3, (*) for which no recursion operator or master symmetry
A. Sergyeyev, A. Sergyeyev, A. Sergyeyev, A.S. Fokas, A.S. Fokas, A.V. Bocharov, A.V. Mikhailov, Artur Sergyeyev, B. Kruglikov, B. Kruglikov, B.G. Konopelchenko, F. Beukers, F. Calogero, G.A. Guthrie, I. Dorfman, I.S. Krasil’shchik, I.S. Krasil’shchik, I.S. Krasil’shchik, I.S. Krasil’shchik, J.A. Sanders, K. Foltinek, M. Błaszak, M. Marvan, M.V. Foursov, N.H. Ibragimov, P.H. Kamp van der, P.J. Olver, P.J. Olver, R.O. Popovych, R.Z. Zhdanov, S.I. Svinolupov, T. Tsuchida   +31 more
core   +2 more sources

Reweighting Scheme for the Calculation of Grand‐Canonical Expectation Values in Quantum Monte Carlo Simulations With a Fermion Sign Problem

Contributions to Plasma Physics, EarlyView.
ABSTRACT Ab initio path integral Monte Carlo (PIMC) simulations constitute the gold standard for the estimation of a broad range of equilibrium properties of a host of interacting quantum many‐body systems spanning a broad range of conditions from ultracold atoms to warm dense quantum plasmas.
Paul Hamann, Jan Vorberger, Tobias Dornheim   +2 more
wiley   +1 more source

Unary Primitive Recursive Functions

, 2006
In this article, we study some new characterizations of primitive recursive functions based on restricted forms of primitive recursion, improving the pioneering work of R. M. Robinson and M. D. Gladstone in this area. We reduce certain recursion schemes (
Daniel E. Severin, Dima, Georoieva, Gladstone, Gladstone, Goodstein, Grzegorczyk   +6 more
core   +3 more sources

A novel construction approach for the pore structure model principally focuses on the controllable roundness of rock particles

Deep Underground Science and Engineering, EarlyView.
Particle rounding effects comparison of different methods: (a), (b), and (c) are the rounding results using the B‐spline curve method with different R; (d), (e), and (f) are the results of vertex rounding substitution method with different rounding radii.
Jiabin Dong, Ning Yang, Yi Jin, Ying Wu, Dandan Liu, Junling Zheng, Jingyan Zhao   +6 more
wiley   +1 more source

How to succeed at Witten diagram recursions without really trying

Journal of High Energy Physics, 2020
Witten diagrams are basic objects for studying dynamics in AdS space, and also play key roles in the analytic functional bootstrap. However, these diagrams are notoriously hard to evaluate, making it extremely difficult to search for recursion relations ...
Xinan Zhou
doaj   +1 more source

Polynomiality of orbifold Hurwitz numbers, spectral curve, and a new proof of the Johnson-Pandharipande-Tseng formula

, 2015
In this paper we present an example of a derivation of an ELSV-type formula using the methods of topological recursion. Namely, for orbifold Hurwitz numbers we give a new proof of the spectral curve topological recursion, in the sense of Chekhov, Eynard,
Dunin-Barkowski, Petr, Lewanski, Danilo, Popolitov, Alexandr, Shadrin, Sergey   +3 more
core   +1 more source