Results 91 to 100 of about 5,686 (263)

ACTS radiometers and a comparison of atmospheric attenuation derived form temperature-humidity and radiometric data

, 2009
Virginia Tech has recently developed and constructed seven ground terminals for use in a propagation experiment employing the Advanced Communications Technology Satellite. This satellite was deployed by NASA in September of 1993. The ground terminals are
Evers, Brent A.
core  

Enhanced High Dimensionality and the Information Processing Capacity in Interfered Spin Wave‐Based Reservoir Computing, Achieved With Eight Detectors

Advanced Electronic Materials, EarlyView.
Physical reservoir computing (PRC) based on spin wave interference has demonstrated high computational performance, yet room for improvement remains. In this study, we fabricated this concept PRC with eight detectors and evaluated the impact of the number of detectors using a chaotic time series prediction task.
Sota Hikasa, Wataru Namiki, Daiki Nishioka, Maki Nishimura, Ryo Iguchi, Kazuya Terabe, Takashi Tsuchiya   +6 more
wiley   +1 more source

Comparing and Merging Observation Data from Ka-Band Cloud Radar, C-Band Frequency-Modulated Continuous Wave Radar and Ceilometer Systems

Remote Sensing, 2017
Field experiment in South China was undertaken to improve understanding of cloud and precipitation properties. Measurements of the vertical structures of non-precipitating and precipitating clouds were obtained using passive and active remote sensing ...
Liping Liu, Zheng Ruan, Jiafeng Zheng, Wenhua Gao   +3 more
doaj   +1 more source

Estimation of atmospheric attenuation at 99 GHz using a total power radiometer [PDF]

, 2013
A total power radiometer operating at 99 GHz was implemented for a propagation experiment aimed to estimate attenuation along a slant path, in Madrid. Valuable data was collected during a measurement campaign in mid-april of 2012.
Riera Salís, José Manuel, Mencia Oliva, Beatriz, García del Pino, Pedro, Grajal de la Fuente, Jesús, Siles Soria, Gustavo Adolfo   +4 more
core  

Mauna Kea sky transparency from CFHT SkyProbe data

, 2009
Nighttime sky-transparency statistics on Mauna Kea are reported based on data from the Canada-France-Hawaii Telescope SkyProbe monitor. We focus on the period beginning with the start of MegaCam wide-field optical imager operations in 2003 and continuing
Magnier, Eugene, Cuillandre, Jean-Charles, Steinbring, Eric   +2 more
core   +1 more source

From Materials to Systems: Challenges and Solutions for Fast‐Charge/Discharge Na‐Ion Batteries

Advanced Energy Materials, EarlyView.
This review systematically analyzes the key characteristics limiting the fast‐charge/discharge capability of Na‐ion batteries (SIBs) from a multi‐scale perspective encompassing electrode materials, the electrode‐electrolyte interface, and the system. Furthermore, it presents practical solution strategies for the fundamental issues arising at each scale,
Bonyoung Ku, Sangbin Park, Sunha Hwang, Sunghyun Lim, Won‐Sub Yoon, Jongsoon Kim   +5 more
wiley   +1 more source

Safety of Sodium‐Ion Batteries: Evaluation and Perspective from Component Materials to Cells, Modules, and Packs

Advanced Energy Materials, EarlyView.
This review provides a bottom‐up evaluation of sodium‐ion battery safety, linking material degradation mechanisms, cell engineering parameters, and module/pack assembly. It emphasizes that understanding intrinsic material stability and establishing coordinated engineering control across hierarchical levels are vital for preventing degradation coupling ...
Won‐Gwang Lim, Seoa Kim, Erik A. Wu, Darren H. S. Tan, Shawn Peng, Xiaolin Li   +5 more
wiley   +1 more source

Quest for a Coherent Definition of Weak-line Quasars and Its Physical Implications

The Astrophysical Journal
Weak-line quasars (WLQs) represent a subset of type 1 quasars distinguished by remarkably weak high-ionization broad emission lines, yet exhibiting normal optical/UV continua. This study establishes a physically motivated definition of WLQs using 371,091
Xiaoqiang Cheng, Jianfeng Wu, Qiaoya Wu
doaj   +1 more source

Cloud attenuation modeling for slant path propagation

, 2014
The project revolves around the study of slant path attenuation on satellite signals due to clouds. The slant propagation path between the satellite and ground station were analyzed using the attenuation detected in them due to clouds.
Natarajan Vidhya
core  

Derivation of Z-γ (Reflectivity-specific attenuation) relation for satellite link in tropical region

, 2016
The investigation of deriving the Z-γ (reflectivity-specific attenuation) relation is critical in the development of a novel rain attenuation prediction for a satellite link using radar information.
Maszlan Ismail, Khairayu Badron, Badron, Khairayu, Salim, Hamid, Hafizah Mustapha, Ismail, Maszlan, Mustapha, Hafizah, Ismail, Ahmad Fadzil, Ahmad Fadzil Ismail, Hamid Salim   +9 more
core   +1 more source