scholarly journals A Cloud Monitoring System for Remote Sites

1998 ◽  
Vol 15 (3) ◽  
pp. 332-335 ◽  
Author(s):  
R. W. Clay ◽  
N. R. Wild ◽  
D. J. Bird ◽  
B. R. Dawson ◽  
M. Johnston ◽  
...  
Keyword(s):  
High Resolution ◽  
Monitoring System ◽  
Cosmic Ray ◽  
Pierre Auger Observatory ◽  
Air Shower ◽  
Cloud Monitoring ◽  
Remote Sites ◽  
High Resolution Fly's Eye

AbstractA cloud monitor has been developed for use with cosmic ray air shower fluorescence detectors, the High Resolution Fly's Eye and the Pierre Auger Observatory. This is based on an infrared thermopile device which, unlike previous such monitors, requires no moving chopper and is suitable for unattended operation over long periods of time.

OBSERVATION OF THE GZK CUTOFF BY THE HIRes EXPERIMENT AND THE PIERRE AUGER OBSERVATORY

2008 ◽  
Vol 23 (17n20) ◽  
pp. 1290-1300 ◽  
Author(s):  
PIERRE SOKOLSKY
Keyword(s):  
High Resolution ◽  
Cosmic Rays ◽  
Six Sigma ◽  
Cosmic Ray ◽  
Pierre Auger Observatory ◽  
High Resolution Fly's Eye ◽  
Recent Claim

Results from the High Resolution Fly's Eye (HiRes) experiment and the Pierre Auger Observatory (PAO) on the observation of the Greissen-Zatsepin-Kuzmin cutoff in the cosmic ray spectrum are presented. Both experiments observe a cutoff consistent with the GZK predictions with a five and six sigma significance respectively. The nature of the cosmic ray composition near the GZK cutoff is discussed as well as the recent claim of a correlation of the highest energy cosmic rays with AGNs in the Southern sky.

EARLY RESULTS FROM THE HIGH-RESOLUTION FLY's EYE

2001 ◽  
Vol 16 (supp01c) ◽  
pp. 1019-1021
Author(s):  
JOHN BELZ
Keyword(s):  
High Resolution ◽  
Cosmic Ray ◽  
Energy Spectra ◽  
Fluorescence Technique ◽  
Early Results ◽  
One Year ◽  
High Resolution Fly's Eye

The High-Resolution Fly's Eye cosmic ray observatory has been operating in monocular (stereo) mode for about three years (one year), during which time we have observed extensive airshowers with an integrated aperture of ~ 1500 km2-sr-yr (~ 400 km-sr-yr) at 5×1019 eV. We describe the HiRes experiment and the nitrogen fluorescence technique, and present data taken in both monocular and stereo modes including preliminary energy spectra.

scholarly journals SEARCH FOR ULTRA-HIGH ENERGY PHOTONS USING AIR SHOWERS

2007 ◽  
Vol 22 (11) ◽  
pp. 749-766 ◽  
Author(s):  
MARKUS RISSE ◽  
PIOTR HOMOLA
Keyword(s):  
Particle Physics ◽  
Cosmic Ray ◽  
High Energy ◽  
Pierre Auger Observatory ◽  
Ultra High Energy ◽  
Air Showers ◽  
Fundamental Physics ◽  
Air Shower ◽  
The Universe

The observation of photons with energies above 1018 eV would open a new window in cosmic-ray research, with possible impact on astrophysics, particle physics, cosmology and fundamental physics. Current and planned air shower experiments, particularly the Pierre Auger Observatory, offer an unprecedented opportunity to search for such photons and to complement efforts of multimessenger observations of the universe. We summarize motivation, achievements, and prospects of the search for ultra-high energy photons.

scholarly journals Tests of hadronic interactions with measurements by Pierre Auger Observatory

2019 ◽  
Vol 208 ◽  
pp. 08003 ◽  
Author(s):  
Raul R. Prado
Keyword(s):  
Cosmic Ray ◽  
High Energy ◽  
Pierre Auger Observatory ◽  
Mass Composition ◽  
Air Showers ◽  
Hadronic Interaction ◽  
Interaction Models ◽  
Hadronic Interactions ◽  
Air Shower ◽  
Muon Production

The hybrid design of the Pierre Auger Observatory allows for the measurement of a number of properties of extensive air showers initiated by ultra-high energy cosmic rays. By comparing these measurements to predictions from air shower simulations, it is possible to both infer the cosmic ray mass composition and test hadronic interactions beyond the energies reached by accelerators. In this paper, we will present a compilation of results of air shower measurements by the Pierre Auger Observatory which are sensitive to the properties of hadronic interactions and can be used to constrain the hadronic interaction models. The inconsistencies found between the interpretation of different observables with regard to primary composition and between their measurements and simulations show that none of the currently used hadronic interaction models can provide a proper description of air showers and, in particular, of the muon production.

Research on Video Encryption and Privacy Protection in Cloud Monitoring System Based on H.264

2019 ◽  
Vol 12 ◽  
Author(s):  
Qingtao Wu ◽  
Zaihui Cao
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Video Data ◽  
Encryption Algorithm ◽  
Management Tool ◽  
Video Encryption ◽  
Wireless Multimedia ◽  
Monitoring Technology ◽  
Security Issues ◽  
Cloud Monitoring

: Cloud monitoring technology is an important maintenance and management tool for cloud platforms.Cloud monitoring system is a kind of network monitoring service, monitoring technology and monitoring platform based on Internet. At present, the monitoring system is changed from the local monitoring to cloud monitoring, with the flexibility and convenience improved, but also exposed more security issues. Cloud video may be intercepted or changed in the transmission process. Most of the existing encryption algorithms have defects in real-time and security. Aiming at the current security problems of cloud video surveillance, this paper proposes a new video encryption algorithm based on H.264 standard. By using the advanced FMO mechanism, the related macro blocks can be driven into different Slice. The encryption algorithm proposed in this paper can encrypt the whole video content by encrypting the FMO sub images. The method has high real-time performance, and the encryption process can be executed in parallel with the coding process. The algorithm can also be combined with traditional scrambling algorithm, further improve the video encryption effect. The algorithm selects the encrypted part of the video data, which reducing the amount of data to be encrypted. Thus reducing the computational complexity of the encryption system, with faster encryption speed, improve real-time and security, suitable for transfer through mobile multimedia and wireless multimedia network.

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