Results 131 to 140 of about 13,595 (306)

Spatial Variability of Permafrost and Active Layer Thickness in a Forested Hillslope of the Taiga Shield

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Under continued climate warming, understanding present‐day permafrost distribution and the controls on ground thaw are critical for predicting permafrost thaw trajectories and associated implications. This study presents a high‐resolution investigation of permafrost extent and active layer thickness (ALT) across a coniferous forested hillslope
Alana Muenchrath   +2 more
wiley   +1 more source

A Note on the Maximum of a certain Bilinear Form

open access: yes, 1994
In this note a generalization of a result by Hardy, Littlewood and P'olya (1926) is derived on computing the maximum of a certain bilinear form.
Eranda Cela, Gerhard J. Woeginger
core  

The inverse of a quantum bilinear form of the oriented braid arrangement

open access: yes
We follow here the results of Varchenko, who assigned to each weighted arrangement \(\mathcal{A}\) of hyperplanes in the \(n\)-dimensional real space a bilinear form, which he called the quantum bilinear form of the arrangement \(\mathcal{A}\).
Sošić, Milena
core   +1 more source

Bivariate postprocessing of wind vectors

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We introduce three novel bivariate postprocessing approaches and analyze their performance for joint postprocessing of bivariate wind‐vector components in Germany. Bivariate vine‐copula‐based models, a bivariate gradient‐boosted version of ensemble model output statistics (EMOS), and a bivariate distributional regression network (DRN) are compared with
Ferdinand Buchner   +3 more
wiley   +1 more source

THE PROPERTIES OF ORDERED BILINEAR FORM SEMIGROUP IN TERM OF FUZZY QUASI-IDEALS

open access: yes, 2014
A bilinear form semigroup is a special semigroup. This semigroup is constructed by an adjoin ordered pair , for is a linear mapping from a vector space into itself and for is a linear mapping from a vector space into itself.
Dhoriva Urwatul, Wutsqa   +1 more
core  

New views of some invariants associated with the Cartesian 2D velocity gradient tensor

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Vorticity and divergence of horizontal flow are fundamental quantities in meteorology; both are linear functions of the four elements of the 2D velocity gradient tensor and both are formally unchanged under coordinate rotation. We explore four quadratic functions of the elements that are geometrically invariant in this sense, finding some novel ...
I. Roulstone, S. A. Clough, A. A. White
wiley   +1 more source

On Griess Algebras

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
In this paper we prove that for any commutative (but in general non-associative) algebra A with an invariant symmetric non-degenerate bilinear form there is a graded vertex algebra V = V_0 oplus V2 oplus V3 oplus ..., such that dim V_0 = 1 and V_2 ...
Michael Roitman
doaj   +1 more source

State space realization of bilinear continuous-time input0output equations

open access: yes, 2007
This paper studies the realizability property of continuous-time bilinear input-output (i/o) equations in the classical state space form. Constraints on the parameters of the bilinear i/o model are suggested that lead to realizable models.
Kotta, P.   +3 more
core   +1 more source

Output‐Feedback H∞$$ {H}_{\infty } $$ Detector‐Based Control of Continuous‐Time Markov Jump Lur'e Systems With Sector‐Bound Optimization

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper addresses the problem of dynamic output‐feedback H∞$$ {H}_{\infty } $$ detector‐based control for continuous‐time Markov Jump Lur'e Systems with uncertain transition rate matrices. In contrast to conventional approaches, the proposed synthesis conditions are derived using Finsler's lemma, introducing additional slack variables to ...
Lucas P. M. Silva   +2 more
wiley   +1 more source

Exact breather waves solutions in a spatial symmetric nonlinear dispersive wave model in (2+1)-dimensions

open access: yesScientific Reports
In this article, the spatial symmetric nonlinear dispersive wave model in (2+1)-dimensions is studied, which have many applications in wave phenomena and soliton interactions in a two-dimensional space with time.
Qunyan Zou   +6 more
doaj   +1 more source

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