Results 221 to 230 of about 360,981 (266)
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Angular radiation pattern of Smith-Purcell radiation
Journal of the Optical Society of America B, 1984The power radiation pattern of Smith–Purcell radiation is measured at various latitudes and azimuth angles relative to the electron beam. The experimental data are used to evaluate the various models and the physical mechanisms previously suggested to describe Smith–Purcell radiation.
A. Gover, P. Dvorkis, U. Elisha
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Pattern Discovery in Internet Background Radiation
IEEE Transactions on Big Data, 2019Internet Background Radiation (IBR) is observed in empty network address spaces. No traffic should arrive there, but it does in overwhelming quantities, gathering evidences of attacks, malwares and misconfigurations. The study of IBR helps to detect spreading network problems, common vulnerabilities and attack trends.
Félix Iglesias, Tanja Zseby
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Intensity patterns of solar ultraviolet radiation
Environmental Research, 1977Abstract Using field measurements of ultraviolet radiation, intensity patterns by time of day and time of year are examined. Depending on location, 39 to 80% of the half-hourly readings of sufficient intensity to produce minimum erythema occur between 10:00 am and 2:00 pm during the late spring and early summer months of May through August.
J, Scotto, T R, Fears
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Adjustment of Radiation Pattern of Street Luminaire
2019 21st International Conference on Transparent Optical Networks (ICTON), 2019This article deals with the analyze of the radiation pattern of the street luminaire Boos Naica and suggests its modifications by turning the LEDs and reflecting surfaces. The goal is to create a more uniform optical power distribution. The street luminaires can provide two functions at the same time, illumination and communication. It is important for
Jan Vitasek +4 more
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Patterns of coevolution in the adaptive radiation of crossbills
Annals of the New York Academy of Sciences, 2010Although evidence for coevolution and geographic variation in its apparent strength is increasing, we still have a relatively poor understanding of why coevolution varies among interactions. Here we review how variation in the occurrence of competitors, resource stability, habitat area, and time has affected the extent of trait escalation in ...
Craig W, Benkman +2 more
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Waveforms and Radiation Patterns
1984In numerous technical applications, as well as some theoretical considerations, an enticing problem is encountered. In its most practical (and real) form the problem may be that of designing a radar (or sonar) transmitter waveform with a given spectrum such that its peak factor is a minimum.
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Beam-shaped radiation pattern for uniform radiated power distribution
2014 IEEE Latin-America Conference on Communications (LATINCOM), 2014This paper presents the application of optimization methods for the synthesis of antenna arrays. The desired pattern shall exhibit a shape that allows uniform distribution of the radiated power on the Earth. Besides beamshaping, the optimization methods allow controlling the level of the sidelobes.
Edson R. Schlosser +3 more
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Laser Radiation and Motility Patterns of Human Sperm
Archives of Andrology, 1989Human sperm were exposed in vitro to laser radiation. An increase in progressive sperm motility was associated with a faster rate of sperm ATP consumption. Computer-assisted analysis of sperm motility confirmed the positive effect of laser irradiation on velocity and linearity of sperm.
LENZI, Andrea +6 more
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Radiation therapy‐associated toxicity: Etiology, management, and prevention
Ca-A Cancer Journal for Clinicians, 2021Kyle Wang
exaly