Results 281 to 290 of about 972,343 (359)

High-performance in-vacuum optical system for quantum optics experiments in a Penning-trap. [PDF]

EPJ Quantum Technol
Berrocal J, Rodríguez D.
europepmc   +1 more source

Partial Observability of Implied Volatility Matrices: Identification and Covolatilities Filtering

Mathematical Finance, EarlyView.
ABSTRACT Whereas data on implied volatilities are available for a large number of assets, this is less frequently the case of implied covolatilities. We introduce a new approach based on static and dynamic Wishart models to solve this problem of missing data.
Christian Gouriéroux, Yang Lu
wiley   +1 more source

Oued Chebeika 002: A new CI1 meteorite linked to outer solar system bodies

Meteoritics &Planetary Science, Volume 60, Issue 7, Page 1441-1479, July 2025.
Abstract CI1 chondrites are rare meteorites with high scientific value. In fact, they are the most chemically primitive meteorites and show evidence of intense parent‐body aqueous alteration. They also share strong similarities with samples from Ryugu and Bennu asteroids returned by the JAXA Hayabusa2 and NASA's OSIRIS‐REx missions.
J. Gattacceca, M. Gounelle, B. Devouard, J.‐A. Barrat, L. Bonal, A. J. King, C. Maurel, P. Beck, M. Roskosz, J.‐C. Viennet, D. Mukherjee, N. Dauphas, P. R. Heck, T. Yokoyama, K. López García, O. Poch, O. Grauby, C. S. Harrison, V. Vinogradoff, P. Vernazza, S. Tikoo, V. Vidal, P. Rochette, D. AuYang, D. Borschneck, J. Juraszek, B. Clark   +26 more
wiley   +1 more source

Determination of the Time-frequency Features for Impulse Components in EEG Signals. [PDF]

Neuroinformatics
Filimonova N, Specovius-Neugebauer M, Friedmann E.   +2 more
europepmc   +1 more source

Looking Back to 1991 Economic Forecasting: Introducing Cointegration

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT Originally written in 1991 to advance the formal analysis of macroeconomic forecasting models and methods following the development of cointegration, alternative forecasting devices, conditional and unconditional forecasts, and data accuracy are considered.
David F. Hendry
wiley   +1 more source

Analysis of RL electric circuits modeled by fractional Riccati IVP via Jacobi-Broyden Newton algorithm. [PDF]

PLoS One
Abd El-Hady M, El-Gamel M, Emadifar H, El-Shenawy A.   +3 more
europepmc   +1 more source

Multi‐Elemental Analysis for Geographical Tracing of Chickpeas Produced in Nearby Locations Around a Protected Geographical Indication

Plant, Cell &Environment, EarlyView.
ABSTRACT The multi‐elemental profile has repeatedly been proposed as a reliable indicator of the geographical origin of plant‐derived foods, as mineral composition accurately reflects the local soil geochemistry and environmental factors. However, this approach may fail in distinguishing specimens from nearby locations, which are expected to be exposed
Ana Sayago, Raúl González‐Domínguez, Ángeles Fernández‐Recamales   +2 more
wiley   +1 more source

An application of the Mittag-Leffler-type Borel distribution and Gegenbauer polynomials on a certain subclass of bi-univalent functions. [PDF]

Heliyon
Hussen A.
europepmc   +1 more source

Padé-type approximants with orthogonal generating polynomials

, 1983
Marc Prévost
openalex   +1 more source

Smooth backfitting for additive hazard rates

Scandinavian Journal of Statistics, EarlyView.
Abstract Smooth backfitting was first introduced in an additive regression setting via a direct projection alternative to the classic backfitting method by Buja, Hastie, and Tibshirani. This paper translates the original smooth backfitting concept to a survival model considering an additively structured hazard.
Stephan M. Bischofberger, Munir Hiabu, Enno Mammen, Jens Perch Nielsen   +3 more
wiley   +1 more source