Results 1 to 10 of about 1,554,844 (174)

Multilinear analysis for discrete and periodic pseudo-differential operators in Lp-spaces [PDF]

open access: yesRevista Integración, 2018
In this note we announce our investigation on the Lp properties for periodic and discrete multilinear pseudo-differential operators. First, we review the periodic analysis of multilinear pseudo-differential operators by showing classical multilinear ...
Duván Cardona, Vishvesh Kumar
doaj   +3 more sources

Grey Wolf optimization enhanced adaptive decomposition for trend periodic analysis of nonstationary and nonlinear hyrologic series [PDF]

open access: yesScientific Reports
Hydro-meteorological variables are essential drivers of the water cycle, and understanding their dynamics is crucial for effective water resources management and disaster mitigation. Conventional trend analysis methods typically assume sequence normality
Jinbei Li, Wei Ding, Hao Wang
doaj   +2 more sources

STABILITY ANALYSIS OF PERIODIC AND ALMOST-PERIODIC DISCRETE SWITCHED LINEAR SYSTEM [PDF]

open access: yesMatrix Science Mathematic, 2018
This article shows a connection between the boundedness and uniform exponential stability of linear discrete switched system in the space of periodic and almost-periodic sequences.
Akbar Zada, Sartaj Ali
doaj   +1 more source

Comparative age-period-cohort analysis

open access: yesBMC Medical Research Methodology, 2023
Abstract Background Cancer surveillance researchers analyze incidence or mortality rates jointly indexed by age group and calendar period using age-period-cohort models. Many studies consider age- and period-specific rates in two or more strata defined by sex, race/ethnicity, etc.
Philip S. Rosenberg   +2 more
openaire   +3 more sources

Efficient electromagnetic analysis of multi‐layer and multi‐scale periodic/quasi‐periodic structures

open access: yesIET Microwaves, Antennas & Propagation, 2023
To increase the electromagnetic analysis efficiency, the fast and memory efficient discontinuous Galerkin time‐domain (DGTD) method, which can simulate expeditiously the multi‐scale and multi‐layer periodic/quasi‐periodic structures, is proposed in this ...
Pengfei Wen, Xingjun Wang
doaj   +1 more source

Review of video frame rate up conversion detection

open access: yes网络与信息安全学报, 2018
Video frame rate up-conversion detection technology is a kind of video forensics technology.In order to systematically elaborate the research progress in the field of video up-conversion detection and guide the follow-up research of video up-conversion ...
Tianqi HE, Xinghao JIANG,Tanfeng SUN
doaj   +3 more sources

Efficient Mining of Non-Redundant Periodic Frequent Patterns

open access: yesVietnam Journal of Computer Science, 2021
Periodic frequent patterns are frequent patterns which occur at periodic intervals in databases. They are useful in decision making where event occurrence intervals are vital.
Michael Kofi Afriyie   +3 more
doaj   +1 more source

A periodic analysis of longitudinal binary responses: a case study of clinical mastitis in Norwegian Red cows

open access: yesGenetics Selection Evolution, 2007
A Bayesian procedure for analyzing longitudinal binary responses using a periodic cosine function was developed. It was assumed that, after adjustment for "seasonal" effects, the oscillation of the underlying latent variables for longitudinal binary ...
Heringstad Bjørg   +3 more
doaj   +1 more source

Rectangular p-periodicity and pq-periodicity of a rational difference system

open access: yesExamples and Counterexamples, 2021
In this paper, we classify periodic characters of the positive solutions of the difference system (1) xn+1=αe−(yn+xn−1)β+yn+xn−1,yn+1=γe−(xn+yn−1)δ+xn+yn−1as rectangular p-periodic and pq-periodic solutions, where the constants α,β,γ,δ,x−1,x0,y−1,y0>0 ...
D.S. Dilip, Sibi C. Babu
doaj   +1 more source

On computing minimal realizations of periodic descriptor systems [PDF]

open access: yes, 2007
: We propose computationally efficient and numerically reliable algorithms to compute minimal realizations of periodic descriptor systems. The main computational tool employed for the structural analysis of periodic descriptor systems (i.e., reachability
Varga, Andreas
core   +1 more source

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