Results 31 to 40 of about 21,397 (182)
The First Results of Ionospheric Skywave Propagation Experiment Over Taiwan
Radio Science, Volume 61, Issue 1, January 2026.Abstract An ionospheric over‐the‐horizon propagation experiment was carried out in Taiwan to investigate characteristics of ionospheric F layer skywave propagation at frequencies 4–12 MHz. Experimental results show that there are prominent diurnal variations in the incident angle, virtual height and plasma frequency at reflection height, which are ...
Hung‐Shi Lin +3 more
wiley +1 more source
GRACE: Gravity Recovery and Climate Experiment Brochure [PDF]
, 2002 This brochure provides details about NASA's GRACE mission. Gravity controls everything from the motion of the ocean tides to the expansion of the entire Universe.
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Modelling the impact of high rise buildings in urban areas on precipitation initiation [PDF]
, 2007 The impact of urban areas upon precipitation distribution has been studied for many years. However, the relative importance of the distribution and type of surface morphology and urban heating remains unclear. A simple model of the surface sensible heat
Baik +28 more
core +2 more sources
Decoding Brain Tumors: Comprehensive Insights into Detection and Evaluation Approaches
Engineering Reports, Volume 7, Issue 12, December 2025.Comparison of brain tumor analysis techniques reveals that hybrid and ensemble models offer superior accuracy and generalization, while traditional ML provides higher interpretability and lower computational cost. This radar chart highlights the trade‐offs across five critical performance dimensions.
Anusha Nalajala +4 more
wiley +1 more source
Journal of Advances in Modeling Earth Systems, Volume 17, Issue 10, October 2025.Abstract Satellite‐based quantitative precipitation estimates (QPE), such as NASA's Integrated Multi‐satellitE Retrievals for GPM (IMERG), provide easily accessible continental‐to‐global precipitation forcings for flood prediction and other hydrologic applications.
Kaidi Peng +8 more
wiley +1 more source
Internal report cluster 1: Urban freight innovations and solutions for sustainable deliveries (1/4) [PDF]
, 2013 Technical report about sustainable urban freight solutions, part 1 of
Allen, J. +5 more
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Historical awareness support and its evaluation in collaborative software engineering [PDF]
, 2003 The types of awareness relevant to collaborative soft- ware engineering are identified and an additional type, "historical awareness" is proposed. This new type of awareness is the knowledge of how software artefacts re- sulting from collaboration ...
Boldyreff, Cornelia, Nutter, David
core +1 more source
Fault Network Geometry Modulates Earthquake Source Spectra Across Scales
Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract Earthquake source spectra provide unique insights into the earthquake rupture process. Motivated by previous research suggesting that complex fault geometries enhance high‐frequency seismic radiation, we study the influence of fault network geometry on earthquake source spectra using multiple independent observations.
Jaeseok Lee +4 more
wiley +1 more source
A Polarimetric Phased Array Antenna for E-SAR in L-Band [PDF]
, 2006 The design of a new L-band antenna for DLR’s airborne synthetic aperture radar system (E-/F-SAR) is presented. Beside operations in L-band new components for a system upgrade were developed. These components are intro-duced.
Bachmann, Markus +3 more
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Ambiguity and area preserving linear transformations in over‐the‐horizon radar
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.The use of recurrent waveforms in over‐the‐horizon radar (OTHR) necessitates techniques for ambiguity resolution and manipulation. In this paper, the authors elucidate methods for systematically transforming any given waveform so that its ambiguity function is transformed by any desired area preserving the linear transformation of the delay‐Doppler ...
Stephen D. Howard, Van Khanh Nguyen
wiley +1 more source