Results 61 to 70 of about 9,069,692 (293)

Periodicity Detection Method for Small-Sample Time Series Datasets

open access: yesBioinformatics and Biology Insights, 2010
Time series of gene expression often exhibit periodic behavior under the influence of multiple signal pathways, and are represented by a model that incorporates multiple harmonics and noise.
Daisuke Tominaga
doaj   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg   +6 more
wiley   +1 more source

Discrete Fourier–Neumann series [PDF]

open access: yes, 2004
Let Jμ denote the Bessel function of order μ. The systemjnα={jnα(s)}s⩾1=2α+2n+1Jα+2n+1(ps)aps|Jα+1(aps)|s⩾1with n=0,1,…,α>−1, and where ps denotes the sth positive zero of Jα(ax), is orthonormal in l2(N).
Ciaurri, Óscar [0000-0002-1695-3311]   +1 more
core   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

open access: yesAdvanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri   +11 more
wiley   +1 more source

On Construction of Piecewise Constant Orthonormal Functions Based on Rescaling Cantor Set with their Application in Orthogonal Multiplexing Systems

open access: yesProceedings of the International Conference on Applied Innovations in IT
The purpose of this paper is to construct a novel system of discontinuous piecewise constant orthogonal functions that is complete with respect to the measure of 4-adic-type Cantor-like sets, particularly on a rescaled Cantor set.
Bahram Mohammadzadeh   +2 more
doaj   +1 more source

Estimation of missing data in a geophysical series of precipitation

open access: yes, 2021
The analysis of dynamic systems is a topic of great interest in the basic sciences since it allows direct inference of the behavior of different systems. The study of physical phenomena provides large databases that, if recorded at regular time intervals,
GALLARDO PÉREZ, HENRY DE JESÚS   +2 more
core   +1 more source

Semiconducting Polymers Post‐Functionalized With Ureido‐Pyrimidinone for Robust Stretchable Transistors

open access: yesAdvanced Functional Materials, EarlyView.
The design of intrinsically robust stretchable semiconducting polymers was achieved through OTBS‐mediated post‐functionalization of PDPP2T side chains with UPy units, generating dual hydrogen‐bonding motifs comprising weaker urethane linkages and strong quadruple UPy interactions along the long alkyl side chain, which is crucial for achieving desirable
Dinda Bazliah   +7 more
wiley   +1 more source

SCALE-BOSS-MR: Scalable Time Series Classification Using Multiple Symbolic Representations

open access: yesApplied Sciences
Time-Series-Classification (TSC) is an important machine learning task for many branches of science. Symbolic representations of time series, especially Symbolic Fourier Approximation (SFA), have been proven very effective for this task, given their ...
Apostolos Glenis, George A. Vouros
doaj   +1 more source

A method to assess seasonality of urinary tract infections based on medication sales and google trends. [PDF]

open access: yesPLoS ONE, 2013
BACKGROUND: Despite the fact that urinary tract infection (UTI) is a very frequent disease, little is known about its seasonality in the community. METHODS AND FINDINGS: To estimate seasonality of UTI using multiple time series constructed with available
Louise Rossignol   +5 more
doaj   +1 more source

Convergence and Divergence of Series Conjugate to a Convergent Multiple Fourier Series [PDF]

open access: yesTransactions of the American Mathematical Society, 1975
In this note we consider to what extent the classical theorems of Plessner and Kuttner comparing the set of convergence of a trigonometric series with that of the conjugate trigonometric series can be generalized to higher dimensions. We show that if a function belongs to
Ash, J. Marshall, Gluck, Lawrence
openaire   +2 more sources

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