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1.3-Octave Nonlinear Cherenkov Radiation Triggered by Intense 2.2-Octave Femtosecond White Laser

open access: diamondUltrafast Science
Nonlinear Cherenkov radiation (NCR), an intriguing noncollinear second harmonic generation process satisfying versatile longitudinal phase matching and its diffraction in space, has been realized in periodically poled lithium niobate (PPLN) nonlinear ...
Lihong Hong   +5 more
doaj   +2 more sources

Conceptual-Analytical Approaches to Threats in the Digital Economy [PDF]

open access: yesAlterEconomics, 2023
The study’s relevance is determined by the significant impact that digitalization has on the economic and social activities of modern states, which engenders new risks and threats to the functioning of various systems and institutions.
Vitaly B. Krishtanosov   +1 more
doaj   +1 more source

Wind Turbine Blade Defect Detection Based on Acoustic Features and Small Sample Size

open access: yesMachines, 2022
Wind power has become an important source of electricity for both production and domestic use. However, because wind turbines often operate in harsh environments, they are prone to cracks, blisters, and corrosion of the blade surface.
Yuefan Zhu   +4 more
doaj   +1 more source

Parâmetro de Qualidade para a Representação do Bordo de Imagens via Spline Cúbica

open access: yesSemina: Ciências Exatas e Tecnológicas, 2023
O presente trabalho apresenta um novo parâmetro de qualidade para a geração do bordo de imagens bidimensionais por meio da interpolação spline. A motivação do estudo é definir um parâmetro que permita estabelecer um critério de parada para inserção de ...
Eliandro Rodrigues Cirilo   +2 more
doaj   +1 more source

Automatic Identification and Forecasting of Structural Unobserved Components Models with UComp

open access: yesJournal of Statistical Software, 2022
UComp is a powerful library for building unobserved components models, useful for forecasting and other important operations, such us de-trending, cycle analysis, seasonal adjustment, signal extraction, etc.
Diego J. Pedregal
doaj   +1 more source

Hierarchical Archimedean Copulas for MATLAB and Octave: The HACopula Toolbox

open access: yesJournal of Statistical Software, 2020
To extend the current implementation of copulas in MATLAB to non-elliptical distributions in arbitrary dimensions enabling for asymmetries in the tails, the toolbox HACopula provides functionality for modeling with hierarchical (or nested) Archimedean ...
Jan Górecki   +2 more
doaj   +1 more source

Gambus Hadhramaut: The Malaysian Malay Lute Tuning Retrieval

open access: yesBioResources, 2023
This study identified elements in a simple homemade gambus from a local crafter using a scientific approach. The gambus was made from geronggang wood (Cratoxylum arborescens), a light Malaysian hardwood with pink sapwood, distinct from the heartwood with
Sinin Hamdan   +4 more
doaj   +2 more sources

Analisis Risiko Keamanan Sistem Informasi E-LKP Dengan Metode Octave Pada Perguruan Tinggi Negeri X

open access: yesJurnal Sistem Informasi, 2020
E-LKP adalah lembar kinerja pegawai yang diakses secara online dan berbasis web. Aplikasi E-LKP Perguruan Tinggi Negeri X tercipta untuk menghitung kinerja pegawai dimana hasil dari perhitungan tersebut akan diimplementasikan untuk remunerasi.
RA Fitria Hamzah   +2 more
doaj   +1 more source

Extraintestinal manifestations at baseline, and the effect of tofacitinib, in patients with moderate to severe ulcerative colitis

open access: yesTherapeutic Advances in Gastroenterology, 2021
Introduction: Extraintestinal manifestations (EIMs) in patients with ulcerative colitis (UC) are common. Tofacitinib is an oral, small molecule Janus kinase inhibitor for the treatment of UC. We evaluated the efficacy of tofacitinib in patients with EIMs,
David T. Rubin   +11 more
doaj   +1 more source

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