Results 81 to 90 of about 175,993 (310)
APPLICATION OF THE RANDOM MATRIX THEORY ON THE CROSS-CORRELATION OF STOCK PRICES [PDF]
International Journal of Mathematical Modelling & Computations, 2016 The analysis of cross-correlations is extensively applied for understanding of interconnections in stock markets. Variety of methods are used in order to search stock cross-correlations including the Random Matrix Theory (RMT), the Principal Component ...
F. Sotoude Vanoliya +1 more
doaj
A Pedestrian Introduction to Gamow Vectors
, 2002 The Gamow vector description of resonances is compared with the S-matrix and the Green function descriptions using the example of the square barrier potential.
Groom D. E. +3 more
core +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT This study examines how sustainability performance affects the cost of debt financing in the hospitality and tourism industry and whether institutional environment quality moderates this relationship. Using a dataset of 2302 firm‐year observations from 34 countries between 2010 and 2022, the results show that sustainability performance is ...
Tantawy Moussa +4 more
wiley +1 more source
International Journal of Satellite Communications and Networking, EarlyView., 2023 In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak +3 more
wiley +1 more source
Automatic inventory of retaining walls from aerial lidar data using 3D deep learning
Civil Engineering Design, EarlyView.Abstract Infrastructure management along highways and railways requires inventories of critical structures like retaining walls, which traditionally rely on manual inspection and documentation. Unfortunately, data in infrastructure databases is often incomplete.
Ivo Gasparini +2 more
wiley +1 more source
A probabilistic diagnostic for Laplace approximations: Introduction and experimentation
Canadian Journal of Statistics, EarlyView.Abstract Many models require integrals of high‐dimensional functions: for instance, to obtain marginal likelihoods. Such integrals may be intractable, or too expensive to compute numerically. Instead, we can use the Laplace approximation (LA). The LA is exact if the function is proportional to a normal density; its effectiveness therefore depends on ...
Shaun McDonald, Dave Campbell
wiley +1 more source
Generalization of the Analytical Exponential Model for Homogeneous Reactor Kinetics Equations
Journal of Applied Mathematics, 2012 Mathematical form for two energy groups of three-dimensional homogeneous reactor kinetics equations and average one group of the precursor concentration of delayed neutrons is presented.
Abdallah A. Nahla, Mohammed F. Al-Ghamdi
doaj +1 more source
Algebraic Bethe ansatz for the Temperley–Lieb spin-1 chain
Nuclear Physics B, 2016 We use the algebraic Bethe ansatz to obtain the eigenvalues and eigenvectors of the spin-1 Temperley–Lieb open quantum chain with “free” boundary conditions.
Rafael I. Nepomechie, Rodrigo A. Pimenta
doaj +1 more source
Eigenvalue Problems for Fredholm Operators with Set-Valued Perturbations
Advanced Nonlinear Studies, 2020 By means of a suitable degree theory, we prove persistence of eigenvalues and eigenvectors for set-valued perturbations of a Fredholm linear operator.
Benevieri Pierluigi, Iannizzotto Antonio
doaj +1 more source
Convergence properties of dynamic mode decomposition for analytic interval maps
Communications on Pure and Applied Mathematics, EarlyView.Abstract Extended dynamic mode decomposition (EDMD) is a data‐driven algorithm for approximating spectral data of the Koopman operator associated to a dynamical system, combining a Galerkin method with N$N$ functions and a quadrature method with M$M$ quadrature nodes.
Elliz Akindji +3 more
wiley +1 more source