Results 31 to 40 of about 11,878,887 (322)

L1-optimal linear programming estimatorfor periodic frontier functions with Holder continuous derivative [PDF]

open access: yes, 2014
We propose a new estimator based on a linear programming method for smooth frontiers of sample points. The derivative of the frontier function is supposed to be Holder continuous.The estimator is defined as a linear combination of kernel functions being ...
Girard, Stephane, Nazin, Alexander
core   +4 more sources

Utilization of a Pseudo-Stochastic Model of Terrain in Simulation of Vibrations and Snubbing in Road Means of Transport

open access: yesCommunications, 2003
Physical and geometrical properties of environment lead to mathematical models of terrain- vehicle interaction. The basic idea of the presented approach is to construct a two - dimensional function whose three-dimensional graph has properties similar to ...
Blahoslav Harman, Viktor Ferencey
doaj   +1 more source

Geodiversity assessment with global and local spatial multicriteria analysis

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
The paper reports on geodiversity assessments of three national parks in Poland, performed independently by experts and volunteers. Each national park selected for the study represents one of three morphogenetically different landscape types: mountains ...
Alicja Najwer   +3 more
doaj   +1 more source

Linear State-Space Model with Time-Varying Dynamics [PDF]

open access: yes, 2014
This paper introduces a linear state-space model with time-varying dynamics. The time dependency is obtained by forming the state dynamics matrix as a time-varying linear combination of a set of matrices.
C. Liu   +6 more
core   +2 more sources

Linear combinations of composition operators on H ∞ $H^{\infty }$ spaces over the unit ball and polydisk

open access: yesJournal of Inequalities and Applications, 2021
In this paper, we characterize completely the compactness of linear combinations of composition operators acting on the space H ∞ ( B N ) $H^{\infty }(\mathbb{B}_{N})$ of bounded holomorphic functions over the unit ball B N $\mathbb{B}_{N}$ from two ...
Xingxing Yao
doaj   +1 more source

Linear Combinations of Isometries

open access: yesRocky Mountain Journal of Mathematics, 2004
Let \(MI\) denote the set of all scalar multiples of all isometries in a Hilbert space \(H\). In this paper, the authors investigate finite-dimensional linear spaces contained in \(MI\) and the commutativity of such spaces. The authors also present an example of two unilateral shifts \(A\), \(B\) of infinite multiplicity such that span\((A,B)\subset MI\
Catepillán, Ximena, Szymanski, Waclaw
openaire   +2 more sources

Existence of common fixed points for linear combinations of contractive maps in enhanced probabilistic metric spaces

open access: yesNonlinear Analysis, 2019
In this paper, we introduce the concept of enhanced probabilistic metric space (briefly EPM-space) as a type of probabilistic metric space. Also, we investigate the existence of fixed points for a (finite or infinite) linear combination of different ...
Jafari Jafari   +3 more
doaj   +1 more source

Coil combination using linear deconvolution in k-space for phase imaging [PDF]

open access: yes, 2019
Background: The combination of multi-channel data is a critical step for the imaging of phase and susceptibility contrast in magnetic resonance imaging (MRI).
Cui, X   +5 more
core   +1 more source

Merging Alternate Remotely-Sensed Soil Moisture Retrievals Using a Non-Static Model Combination Approach

open access: yesRemote Sensing, 2016
Soil moisture is an important variable in the coupled hydrologic and climate system. In recent years, microwave-based soil moisture products have been shown to be a viable alternative to in situ measurements.
Seokhyeon Kim   +4 more
doaj   +1 more source

Linear combination of chi-squares for multinomial process monitoring

open access: yesGestão & Produção, 2021
: Marcucci (1985) proposed a chi square goodness of fit statistic based generalized p-chart for multinomial process monitoring. A chi square distribution quantile was considered as a control chart limit.
Ramzi Talmoudi   +2 more
doaj   +1 more source

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