Results 31 to 40 of about 763,518 (232)

Parameter Estimation from Time-Series Data with Correlated Errors: A Wavelet-Based Method and its Application to Transit Light Curves

, 2009
We consider the problem of fitting a parametric model to time-series data that are afflicted by correlated noise. The noise is represented by a sum of two stationary Gaussian processes: one that is uncorrelated in time, and another that has a power ...
Bakos, Bakos, Beran, Bevington, Box, Bracewell, Burke, Butler, Carter, Coughlin, Gould, Gregory, Haar, Holman, Jenkins, Johnson, Joshua A. Carter, Joshua N. Winn, Koen, Mallat, Mandel, Press, Press, Ribas, Teolis, Winn, Winn, Winn, Wornell   +28 more
core   +1 more source

Inherent length-scales of periodic solar wind number density structures [PDF]

, 2008
[1] We present an analysis of the radial length-scales of periodic solar wind number density structures. We converted 11 years (1995–2005) of solar wind number density data into radial length series segments and Fourier analyzed them to identify all ...
Kepko, L., Spence, Harlan E., Viall, N. M.   +2 more
core   +2 more sources

Numerical Algorithm for Nonlinear Delayed Differential Systems of $n$th Order

, 2019
The purpose of this paper is to propose a semi-analytical technique convenient for numerical approximation of solutions of the initial value problem for $p$-dimensional delayed and neutral differential systems with constant, proportional and time varying
Rebenda, Josef, Šmarda, Zdeněk
core   +1 more source

Solution of fractional modified Kawahara equation: a semi-analytic approach

Mathematics in Applied Sciences and Engineering, 2023
The present study examines a semi-analytical method known as the Fractional Residual Power Series Method for obtaining solutions to the non-linear, time-fractional Kawahara and modified Kawahara equations.
Sagar Khirsariya, Snehal Rao, Jignesh Chauhan   +2 more
doaj   +1 more source

Laser Tomography Adaptive Optics (LTAO): A performance study [PDF]

, 2013
We present an analytical derivation of the on-axis performance of Adaptive Optics systems using a given number of guide stars of arbitrary altitude, distributed at arbitrary angular positions in the sky.
Ramaprakash, A. N., Tatulli, E.
core   +1 more source

Dynamical analysis of a nonlinear oscillator chain in the Peyrard–Bishop DNA model using residual power series and Laplace residual power series method [PDF]

Iranian Journal of Numerical Analysis and Optimization
In this study, we investigate the numerical exploration of the Peyrard–Bishop DNA (PBD) dynamic model. These solutions are responsible for analyzing the nonlinear interactions between the adjacent displacements of the DNA strand.
D. Priyadarsini, P.K. Sahu, M. Routaray
doaj   +1 more source

An Improved Version of Residual Power Series Method for Space-Time Fractional Problems

Advances in Mathematical Physics, 2022
The task of present research is to establish an enhanced version of residual power series (RPS) technique for the approximate solutions of linear and nonlinear space-time fractional problems with Dirichlet boundary conditions by introducing new parameter
Mine Aylin Bayrak, Ali Demir, Ebru Ozbilge   +2 more
doaj   +1 more source

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source

CMB Polarization and Temperature Power Spectra Estimation using Linear Combination of WMAP 5-year Maps [PDF]

, 2009
We estimate CMB polarization and temperature power spectra using WMAP 5-year foreground contaminated maps. The power spectrum is estimated by using a model independent method, which does not utilize directly the diffuse foreground templates nor the ...
Basko, Bennett, Bennett, Bond, Bouchet, Delabrouille, Eriksen, Eriksen, Eriksen, Eriksen, Eriksen, Finkbeiner, Fixsen, Fosalba, Gold, Górski, Hill, Hinshaw, Hinshaw, Hivon, Huffenberger, Jacques Delabrouille, Jarosik, Jarosik, Kogut, Komatsu, Komatsu, Nolta, Page, Pankaj Jain, Pramoda Kumar Samal, Rajib Saha, Saha, Schlegel, Simon Prunet, Spergel, Tarun Souradeep, Tegmark, Tegmark, Zaldarriaga   +39 more
core   +6 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source