Results 61 to 70 of about 3,605 (210)

Spatial Ergodicity of Doppler Characteristics in Polarimetric Ocean Radar Scattering: A Numerical Study

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
This study numerically investigates the spatial ergodicity of Doppler characteristics in polarimetric ocean radar scattering. The full Apel wave spectrum is employed to generate 2-D time-varying sea surfaces that involve all dominant large-scale gravity ...
Jianing Shao, Yanlei Du, Xiaofeng Yang, Longxiang Linghu, Jinsong Chong, Jian Yang   +5 more
doaj   +1 more source

Wave Tracing: Generalizing The Path Integral To Wave Optics

Computer Graphics Forum, EarlyView.
Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley   +1 more source

Robustness of quantum many-body scars in the presence of a Markovian bath

Communications Physics
Generic closed quantum many-body systems tend to thermalize, a phenomenon known as quantum ergodicity, where initial local information scrambles into the full space.
Xiang-Ping Jiang, Mingdi Xu, Xuanpu Yang, Hongsheng Hou, Yucheng Wang, Lei Pan   +5 more
doaj   +1 more source

MODEL OF THE QUALITY MANAGEMENT SYSTEM OF A MACHINE TOOL COMPANY

Вісник Національного технічного університету «ХПÌ». Серія: Стратегічне управління, управління портфелями, програмами та проектами, 2016
Development of models and methods such that would improve the competitive position of enterprises by improving management processes is an important task of project management.
Катерина Вікторівна КОЛЕСНІКОВА, Артем Олександрович НЕГРІ, Георгій Сергійович ОЛЕХ, Богдан Олександрович ЛЕБЕДЕНКО   +3 more
doaj   +1 more source

Dynamical quantum ergodicity from energy level statistics

Physical Review Research, 2023
Ergodic theory provides a rigorous mathematical description of chaos in classical dynamical systems, including a formal definition of the ergodic hierarchy. How ergodic dynamics is reflected in the energy levels and eigenstates of a quantum system is the
Amit Vikram, Victor Galitski
doaj   +1 more source

Fading ergodicity

Physical Review B
Eigenstate thermalization hypothesis (ETH) represents a breakthrough in many-body physics since it allows us to link thermalization of physical observables with the applicability of random matrix theory (RMT). Recent years were also extremely fruitful in exploring possible counterexamples to thermalization, ranging, among others, from integrability ...
Kliczkowski, Maksymilian, Świętek, Rafał, Hopjan, Miroslav, Vidmar, Lev   +3 more
openaire   +4 more sources

On Integral Priors for Multiple Comparison in Bayesian Model Selection

International Statistical Review, EarlyView.
Summary Noninformative priors constructed for estimation purposes are usually not appropriate for model selection and testing. The methodology of integral priors was developed to get prior distributions for Bayesian model selection when comparing two models, modifying initial improper reference priors. We propose a generalisation of this methodology to
Diego Salmerón, Juan Antonio Cano, Christian P. Robert   +2 more
wiley   +1 more source

Missing Values in Time Series: A Brief Review and a New Versatile Imputation Method

International Statistical Review, EarlyView.
Summary Missing data can significantly hamper standard time series analysis, yet they occur frequently in applications. In this paper, we briefly review some available methods for handling missing values and introduce the temporal Wasserstein imputation, a novel method for imputing missing data in time series.
Shuo‐Chieh Huang, Tengyuan Liang, Ruey S. Tsay   +2 more
wiley   +1 more source

Ergodicity, lack thereof, and the performance of reservoir computing with memristive networks

Nano Express
Networks composed of nanoscale memristive components, such as nanowire and nanoparticle networks, have recently received considerable attention because of their potential use as neuromorphic devices.
Valentina Baccetti, Ruomin Zhu, Zdenka Kuncic, Francesco Caravelli   +3 more
doaj   +1 more source

Monetary and Macroprudential Policies under Dollar‐Denominated Foreign Debt

Journal of Money, Credit and Banking, EarlyView.
Abstract This paper studies monetary and macroprudential policies in a small open economy that borrows from abroad in foreign currency. The model features a novel mechanism in which exchange rate depreciation triggered by a borrowing constraint is amplified through balance of payments adjustments, increasing the real burden of foreign debt and causing ...
HIDEHIKO MATSUMOTO
wiley   +1 more source