Results 31 to 40 of about 2,195,899 (341)

Space-frequency correlation of classical waves in disordered media: high-frequency and small scale asymptotics

, 2007
Two-frequency radiative transfer (2f-RT) theory is developed for geometrical optics in random media. The space-frequency correlation is described by the two-frequency Wigner distribution (2f-WD) which satisfies a closed form equation, the two-frequency ...
A. C. Fannjiang, Amic E., Chandrasekhar S., Dragoman D., Ishimaru A., Kravtsov Yu. A., Mandel L., Schleich W. P., Stroock D. W.   +8 more
core   +1 more source

Accurate Dynamic Analysis Method of Cable-Damper System Based on Dynamic Stiffness Method

Buildings
To suppress large vibrations of the cable in cable-stayed bridges, it is common to install transverse dampers near the end of the cable. This paper focuses on the cable-damper system; based on the dynamic stiffness method, an accurate dynamic analysis ...
Hui Jiao, Bin Xu, Zhengkai Jiang, Can Cui, Haoxiang Yang   +4 more
doaj   +1 more source

Hawking radiation power equations for black holes

Nuclear Physics B, 2017
We derive the Hawking radiation power equations for black holes in asymptotically flat, asymptotically Anti-de Sitter (AdS) and asymptotically de Sitter (dS) black holes. This is done by using the greybody factor for these black holes.
Ravi Mistry, Sudhaker Upadhyay, Ahmed Farag Ali, Mir Faizal   +3 more
doaj   +1 more source

Resilient modulus and cumulative plastic strain of frozen silty clay under dynamic aircraft loading

SN Applied Sciences, 2021
Article Highlights The empirical equation for resilient modulus and temperature is a segmented function; the segmentation point is − 5 °C. The empirical equation for resilient modulus and frequency is a segmented function; the segmentation point is 2 Hz.
Xiaolan Liu, Xianmin Zhang, Xiaojiang Wang   +2 more
doaj   +1 more source

Self-Averaging Scaling Limits of Two-Frequency Wigner Distribution for Random Paraxial Waves [PDF]

, 2006
Two-frequency Wigner distribution is introduced to capture the asymptotic behavior of the space-frequency correlation of paraxial waves in the radiative transfer limits. The scaling limits give rises to deterministic transport-like equations.
Adler R J, Albert C Fannjiang, Ethier S N, Fannjiang A, Fannjiang A, Fouque J-P, Ibragimov I A, Ishimaru A, Kurtz T G, Kushner H J, Mandel L, Strohbehn J W   +11 more
core   +7 more sources

Reproducibility Limits of the Frequency Equation for Estimating Long-Linear Internal Wave Periods in Lake Biwa

Hydrology
In a large deep lake, the generation of internal Kelvin waves and internal Poincaré waves due to wind stress on the lake surface is a significant phenomenon. These internal waves play a crucial role in material transport within the lake and have profound
Hibiki Yoneda, Chunmeng Jiao, Keisuke Nakayama, Hiroki Matsumoto, Kazuhide Hayakawa   +4 more
doaj   +1 more source

Kinetic description of the oblique propagating spin-electron acoustic waves in degenerate plasmas

, 2017
Oblique propagation of the spin-electron acoustic waves in degenerate magnetized plasmas is considered in terms of quantum kinetics with the separate spin evolution, where the spin-up electrons and the spin-down electrons are considered as two different ...
Andreev, Pavel A.
core   +1 more source

High Frequency Asymptotics for the Spin-Weighted Spheroidal Equation

, 2004
We fully determine a uniformly valid asymptotic behaviour for large $a \omega$ and fixed $m$ of the angular solutions and eigenvalues of the spin-weighted spheroidal differential equation.
A. Erdélyi, A. A. Starobinskiĭ, Adrian C. Ottewill, B. Carter, B. E. Barrowes, C. Flammer, C. M. Bender, E. W. Leaver, H. Buchholz, J. Meixner, J. Stewart, M. Abramowitz, M. Sasaki, Marc Casals, R. Breuer, R. A. Breuer, S. Chandrasekhar, T. Oguchi, W. H. Press   +18 more
core   +1 more source

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source

Spatio-temporal generalised frequency response functions [PDF]

, 2010
The concept of generalised frequency response functions (GFRFs), which were developed for nonlinear system identification and analysis, is extended to continuous spatio-temporal dynamical systems normally described by partial differential equations (PDEs)
Billings, S.A., Coca, D., Guo, L.Z., Guo, Y.Z., Lang, Z.Q.   +4 more
core