Results 61 to 70 of about 4,355 (119)

Abrupt Disappearance of Plasmaspheric Hiss Inside the Magnetic Dip

Geophysical Research Letters
Plasmaspheric hiss plays an important role in radiation belt electron dynamics, and its excitation and propagation have long attracted attention. During a substorm, Van Allen Probe B observed the disappearance of plasmaspheric hiss at the magnetic dip ...
Yan Zhuang, Chao Yue, Shan Wang, Haimeng Li, Sibo Xu, Xu‐Zhi Zhou, Qiu‐Gang Zong   +6 more
doaj   +1 more source

Hiss noise reduction method used for audio signals based on AAC bit-stream

Tongxin xuebao, 2013
A hiss noise reduction method used for audio signals based on AAC bit-stream in compressed domain was proposed.The input was AAC bit-stream derived from noisy audio signals,and the output was the enhanced AAC bit-stream used for decoder.First,Hiss noise ...
Feng DENG, Chang-chun BAO, Feng BAO
doaj   +2 more sources

Direction finding of auroral VLF hiss in auroral zone

Antarctic Record, 1981
A newly developed direction finding ('DF') for auroral hiss based on the measurement of time differences of wave arrival among three spaced points was carried out around Syowa Station (geomag. lat. -70.4°), Antarctica in 1978-1979. It has been found that
Masanori Nishino, Takeo Hirasawa
doaj   +1 more source

Auroral Hiss Observed by Antarctic Rockets, S-210A-20 and 21 (e. Event Session) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and the Magnetosphere in the Polar Regions : Part II)

Antarctic Record, 1980
Characteristics of auroral hiss emissions observed in the Antarctic rocket experiments using the S-210JA-20 and 21 rockets are described.The S-210JA-20 rocket was launched in a geomagnetically disturbed condition. whereas the S-210JA-21 was launched in a
Iwane KIMURA, Toshiro MATSUO, Tetsuo KAMATA, Isamu NAGANO   +3 more
doaj   +1 more source

Hospital Information Systems: The status and approaches in selected countries of the Middle East

Electronic Physician, 2018
Background and aim: Since hospital information systems (HISs) are among the most important information systems in the health sector, the present study aimed to shed light upon the situation of HISs in selected countries of the Persian Gulf region to ...
Hamid Moghaddasi, Ali Mohammadpour, Hamid Bouraghi, Amirabbas Azizi, Hamzeh Mazaherilaghab   +4 more
doaj   +1 more source

Long Lifetime Hiss Rays in the Disturbed Plasmasphere

Geophysical Research Letters
Plasmaspheric hiss waves are important to shape the Earth’s electron radiation belt. These waves are commonly envisioned to have a long lifetime which allows them to permeate the global plasmasphere from a spatially restricted source.
Zhiyong Wu, Zhenpeng Su, Huinan Zheng, Yuming Wang, Yoshizumi Miyoshi, Iku Shinohara, Ayako Matsuoka, Yoshiya Kasahara, Fuminori Tsuchiya, Atsushi Kumamoto, Shoya Matsuda, Yasumasa Kasaba, Mariko Teramoto, Tomoaki Hori   +13 more
doaj   +1 more source

Security and Privacy of Technologies in Health Information Systems: A Systematic Literature Review

Computers
Health information systems (HISs) have immense value for healthcare institutions, as they provide secure storage, efficient retrieval, insightful analysis, seamless exchange, and collaborative sharing of patient health information.
Parisasadat Shojaei, Elena Vlahu-Gjorgievska, Yang-Wai Chow   +2 more
doaj   +1 more source

Cross Correlation Between Plasmaspheric Hiss Waves and Enhanced Radiation Levels at Aviation Altitudes

Space Weather
Enhanced radiation in the Earth's atmosphere can pose serious hazards to pilots, aircraft passengers, and commercial space travelers. Recent results have shown, statistically, that there is a strong correlation between dose rates observed by Automated ...
Homayon Aryan, Jacob Bortnik, W. Kent Tobiska, Piyush Mehta, Rashmi Siddalingappa, Benjamin Hogan   +5 more
doaj   +1 more source

Evolution of dayside chorus into nightside plasmaspheric hiss

Frontiers in Astronomy and Space Sciences
Plasmaspheric hiss is an incoherent, broadband, whistler-mode emission that is found primarily in the Earth’s dense plasmasphere and is believed to be largely responsible for the formation of the slot region between the inner and outer radiation belts ...
Jacob Bortnik, Lunjin Chen, Xiao-Jia Zhang, Xiao-Jia Zhang, Nigel P. Meredith   +4 more
doaj   +1 more source

Ground-based observations of the VLF auroral hiss at Lovozero and Barentsburg observatories

Solar-Terrestrial Physics
The paper presents the results of the analysis of auroral hiss bursts, measured at Lovozero and Barentsburg observatories. These points are located on close geomagnetic meridians in the auroral and circumpolar zones.
Nikitenko A. S., Kleimenova N. G., Fedorenko Y. V., Beketova E. B.   +3 more
doaj   +1 more source