Results 71 to 80 of about 10,226,544 (213)
IEEE Photonics Journal, 2023 This paper examines the output characteristics of the photovoltaic (PV) array in a laser wireless power transmission (LWPT) system considering atmospheric turbulence and pointing error r (r, θ).
Zhenyang Xiong +7 more
doaj +1 more source
Computational Analysis of the Vibrational Response of Lunar Regolith Made of Nonspherical Grains
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT Vibration‐based systems have shown that appropriately oriented and tuned mechanical oscillations can disrupt regolith interlocking and promote flow. Building on this evidence, the present study investigates vibration‐controlled granular discharge as a potential ISRU (In Situ Resource Utilization) strategy, with the aim of supporting ...
Lewis Traquair +4 more
wiley +1 more source
Scaling turbulence drives the general circulation
Quarterly Journal of the Royal Meteorological Society, EarlyView.The NOAA Gulfstream SP4, which deployed the GPS dropsondes over the NE Pacific Ocean as part of the Winter Storms Project during the January–March periods of 2004, 2005 and 2006. Abstract Statistical multifractal analysis of airborne and dropsonde observations is used to show that persistence of velocity after molecular collisions breaks the continuous
Adrian F. Tuck
wiley +1 more source
Generalized atmospheric turbulence MTF for wave propagating through non-Kolmogorov turbulence
Optics Express, 2010 A generalized exponential spectrum model is derived, which considers finite turbulence inner and outer scales and has a general spectral power law value between the range 3 to 5 instead of standard power law value 11/3. Based on this generalized spectrum model, a new generalized long exposure turbulence modulation transfer function (MTF) is obtained ...
Lin-yan, Cui +4 more
openaire +2 more sources
Path dependency and angular anisoplanatism in non-Kolmogorov turbulence [PDF]
2015 IEEE Aerospace Conference, 2015 We examine the effect of non-Kolmogorov turbulence on angular anisoplanatism. Generalized expressions for the isoplanatic angle in turbulence with non-Kolmogorov power-laws are developed in terms of the effective turbulence height, related turbulence moments, and characteristics lengths such as Striblings equivalent Fried parameter. We then compare the
Bos, Jeremy P., Rao Gudimetla, V. S.
openaire +2 more sources
Quarterly Journal of the Royal Meteorological Society, EarlyView.The cell perturbation (CP) method mitigate mesoscale structural perturbations entering large‐eddy simulations (LES) from gray‐zone parent domains. The turbulent kinetic energy (TKE) bias‐filtering effect of CP increases with nesting ratio and is most pronounced under weakly convective conditions.
Jung‐Hee Ryu, Song‐Lak Kang
wiley +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner +5 more
wiley +1 more source
Journal of Fish Biology, EarlyView.Abstract Point‐abundance sampling by electric fishing (PASE) was compared with single‐pass (DF1) and triple‐pass depletion sampling (DF3) electric fishing on the same reaches of four headwater streams sampled over multiple years in the Ribble catchment, UK. Juvenile salmonids, mostly brown trout Salmo trutta with some Atlantic salmon S.
Reagan H. Pearce +3 more
wiley +1 more source
Propagation of elegant Laguerre–Gaussian beam in non-Kolmogorov turbulence
Optics Express, 2011 The analytical formulas for the average intensity and the beam width of the elegant Laguerre-Gaussian beam (ELGB) in non-Kolmogorov turbulence have been derived based on the extended Huygens-Fresnel principle. Numerical results reveal that the ELGB converts to Gaussian form quicker for smaller values of beam order and for smaller wavelengths.
Huafeng, Xu, Zhifeng, Cui, Jun, Qu
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Economic Growth Vulnerability Across Euro Area Countries
Oxford Bulletin of Economics and Statistics, EarlyView.ABSTRACT We analyse growth vulnerability in the four largest Euro Area (EA) economies, measured as a lower quantile of the growth distribution conditional on EA‐wide and country‐specific macroeconomic/financial factors. Growth densities are obtained under a normal activity scenario and under stressed conditions.
Claudio Lissona, Esther Ruiz
wiley +1 more source