Results 41 to 50 of about 765,097 (272)

Non-integrable aspects of the multi-frequency Sine-Gordon model [PDF]

, 1997
We consider the two-dimensional quantum field theory of a scalar field self-interacting via two periodic terms of frequencies $\alpha$ and $\beta$. Looking at the theory as a perturbed Sine-Gordon model, we use Form Factor Perturbation Theory to analyse ...
Bullough, Campbell, Coleman, Coleman, Coleman, Dashen, Delfino, Friedan, G. Delfino, G. Mussardo, Kadanoff, Kadanoff, Karowski, Korepin, Koubek, Lamb, LeClair, Leggett, Lowenstein, Luther, Luther, Maki, Maki, McCall, McCoy, Schwinger, Scott, Smimov, Yurov, Zamolodchikov, Zamolodchikov, Zamolodchikov   +31 more
core   +3 more sources

RBF-Neural Network Applied to the Quality Classification of Tempered 100Cr6 Steel Cams by the Multi-Frequency Nondestructive Eddy Current Testing

Metals, 2017
This article proposes a Radial Basis Function Artificial Neural Network (RBF-ANN) to classify tempered steel cams as correctly or incorrectly treated pieces by using multi-frequency nondestructive eddy current testing.
Víctor Martínez-Martínez, Javier Garcia-Martin, Jaime Gomez-Gil   +2 more
doaj   +1 more source

Single-Epoch Ambiguity Resolution of a Large-Scale CORS Network with Multi-Frequency and Multi-Constellation GNSS

Remote Sensing, 2022
Ambiguity resolution at Continuously Operating Reference Station (CORS) network sites is the key step in the whole processing chain of Network Real Time Kinematic (NRTK).
Shengyue Ji, Guofeng Liu, Duojie Weng, Zhenjie Wang, Kaifei He, Wu Chen   +5 more
doaj   +1 more source

A new approach to multi-frequency synthesis in radio interferometry

, 2014
We present a new approach to multi-frequency synthesis in radio astronomy. Using Bayesian inference techniques, the new technique estimates the sky brightness and the spectral index simultaneously.
Bell, M. A., Enßlin, T., Junklewitz, H.
core   +1 more source

GNSS-IR Snow Depth Retrieval from Multi-GNSS and Multi-Frequency Data

Remote Sensing, 2021
Global navigation satellite system interferometric reflectometry (GNSS-IR) represents an extra method to detect snow depth for climate research and water cycle managing. However, using a single frequency of GNSS-IR for snow depth retrieval is often found
Jinsheng Tu, Haohan Wei, Rui Zhang, Lei Yang, Jichao Lv, Xiaoming Li, Shihai Nie, Peng Li, Yanxia Wang, Nan Li   +9 more
doaj   +1 more source

On the effectiveness of spectral methods for the numerical solution of multi-frequency highly-oscillatory Hamiltonian problems [PDF]

, 2018
Multi-frequency, highly-oscillatory Hamiltonian problems derive from the mathematical modelling of many real life applications. We here propose a variant of Hamiltonian Boundary Value Methods (HBVMs), which is able to efficiently deal with the numerical ...
Brugnano, L., Montijano, J. I., Rández, L.   +2 more
core   +2 more sources

Multi-frequency observations of Swift J1626.6-5156 [PDF]

Astronomy & Astrophysics, 2011
New figure and new table. Optical spectroscopic classification performed.
Reig, P., Nespoli, E., Fabregat, J., Mennickent, R. E.   +3 more
openaire   +6 more sources

Multi-frequency resonant antenna [PDF]

, 1970
Antenna is simultaneously resonant at 8.75 MHz, 11.825 MHz, and 20.562 MHz. It provides a near-field radiator which has a constant current distribution across its radiating elements for each of the resonant ...
Temps, A. J., Jr., Visscher, J.
core   +1 more source

A fisheries acoustic multi-frequency indicator to inform on large scale spatial patterns of aquatic pelagic ecosystems [PDF]

, 2013
Fisheries acoustic instruments provide information on four major groups in aquatic ecosystems: fish with and without swim bladder (tertiary and quaternary consumers), fluidlike zooplankton (secondary consumers) and small gas bearing organisms such as ...
Bergen, Laurent, Trenkel, Verena
core   +3 more sources

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar, Denise M. Connolly, Ellen Kellington, Elyse Zelunka, Karla Kerrigan, Furqan Shaikh, Paul C. Nathan, Meredith S. Irwin, Sarah Cohen‐Gogo   +8 more
wiley   +1 more source