Results 41 to 50 of about 1,144,435 (297)
Dynamics of the Number of Trades of Financial Securities
, 1999 We perform a parallel analysis of the spectral density of (i) the logarithm of price and (ii) the daily number of trades of a set of stocks traded in the New York Stock Exchange.
Cootner (Ed.) +7 more
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Advanced Engineering Research, 2017 Introduction. The effect of the low-frequency oscillations of the reaper on crop losses of the domestic combine harvesters is considered. In the study, various speeds of the machine, various mass-geometric and elastic-dissipative characteristics of the ...
Leonid M. Groshev +2 more
doaj +1 more source
Temporal Coherence Estimators for GBSAR
Remote Sensing, 2022 Many Ground-Based Synthetic Aperture Radar (GBSAR) applications demand preliminary analysis to select areas with high-quality signal. That is, areas in which the phase can be processed to extract the desired information. The interferometric coherence and
Alessandra Beni +3 more
doaj +1 more source
Universal sum and product rules for random matrices
, 2010 The spectral density of random matrices is studied through a quaternionic generalisation of the Green's function, which precisely describes the mean spectral density of a given matrix under a particular type of random perturbation.
Rogers, Tim
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A note on a Mar\v{c}enko-Pastur type theorem for time series [PDF]
, 2011 In this note we develop an extension of the Mar\v{c}enko-Pastur theorem to time series model with temporal correlations. The limiting spectral distribution (LSD) of the sample covariance matrix is characterised by an explicit equation for its Stieltjes ...
Bai +10 more
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Reciprocal control of viral infection and phosphoinositide dynamics
FEBS Letters, EarlyView.Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley +1 more source
, 2006 We compute spectral densities of momentum and R-charge correlators in thermal $\N=4$ Yang Mills at strong coupling using the AdS/CFT correspondence. For $\omega \sim T$ and smaller, the spectral density differs markedly from perturbation theory; there is
D. Forster +7 more
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Numerical analysis of the planewave discretization of some orbital-free and Kohn-Sham models [PDF]
, 2010 We provide a priori error estimates for the spectral and pseudospectral Fourier (also called planewave) discretizations of the periodic Thomas-Fermi-von Weizs\"{a}cker (TFW) model and for the spectral discretization of the Kohn-Sham model, within the ...
Cancès, Eric +2 more
core +5 more sources
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source
The quantile spectral density and comparison based tests for nonlinear time series [PDF]
, 2012 In this paper we consider tests for nonlinear time series, which are motivated by the notion of serial dependence. The proposed tests are based on comparisons with the quantile spectral density, which can be considered as a quantile version of the usual ...
Lee, Junbum, Rao, Suhasini Subba
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