141 research outputs found
Satellite Monitoring and Mathematical Modelling of Deep Runoff Turbulent Jets in Coastal Water Areas
PRINCIPLES AND METHODS OF ANALYSIS OF LINGUOCULTURAL ARCHETYPES AND STEREOTYPES IN MODERN COMPARATIVISTICS
The principles of the analysis of an archetypical concept FIRE are defined in the article. Semantic, onomasiological, functional principles, on the basis of which the complex technique of reconstruction and comparison of motivational signs of its nominators are developed; among them are those which express stereotypical ideas of fire in consciousness of English and Ukrainian language native speakers
Measurement of Sea Wave Spatial Spectra from High- Resolution Optical Aerospace Imagery
The chapter is devoted to the development of methods for remote measurement of spatial spectra of waves arising on marine and ocean surface. It is shown that in most natural conditions of optical image formation, a nonlinear modulation of the brightness field occurs by slopes of water surface elements. Methods for reconstructing the spectra of surface waves from optical image spectra with allowance for such modulation are proposed. The methods are based on the numerical simulation of water surface taking into account wave formation conditions and conditions of light entering the sea surface from the upper and lower hemispheres. Using the results of numerical simulation, special operators are built to retrieve wave spectra from the spectra of aerospace images. These retrieving operators are presented in the form of analytical expressions, depending on the sets of parameters, which are determined by the conditions for the formation of images. The results of experimental studies of the sea wave spectra in various water areas using satellite optical images of high spatial resolution are presented. In the experimental studies, the spatial spectral characteristics of sea waves estimated from remote sensing data were compared with the corresponding characteristics measured by contact assets under controlled conditions
ASSESSMENT OF THE VEGETATIVE STATUS AND DYNAMICS OF HEART RATE VARIABILITY OF PATIENTS WITH CHRONIC KIDNEY DISEASE UNDER THE INFLUENCE OF ANTIHYPERTENSIVE THERAPY
In this paper the authors present information on the study of heart rate variability of patients with chronic kidney disease. Hypersympathicotonia is observed in patients with renal disease and hypertension. Arguments are given in favor of the use of angiotensin-converting enzyme. The issue of the place of beta-blockers is debated
Monitoring and identification of operation modes of energy carrier pipeline transportation
The authors analyzed the examples of using operation mode monitoring systems for energy carrier pipeline transportation. It is noted that the effectiveness of this class of systems depends on the information and software support. Harnessing the power of satellites equipped with a standard telemetry and optical equipment allows you to monitor and control the operation modes of energy carrier pipeline transportation on a fundamentally new level. The article considers modern operation modes of pipelines transporting energy carriers. It describes operational complications that have a negative impact on the hydraulic pipeline operation modes. Main tendencies and directions of improving the efficiency of energy carrier pipeline transportation are presented. It is noted that at the present stage of science and technology development in order to improve the effectiveness of monitoring it is necessary to use advanced mathematical models to implement continuous monitoring, control and management of the pumping process at different modes of pipeline operation within a single approach
Submerged turbulence detection with optical satellites
During fall periods in 2002, 2003 and 2004 three major oceanographic
expeditions were carried out in Mamala Bay, Hawaii. These were part of the RASP
Remote Anthropogenic Sensing Program. Ikonos and Quickbird optical satellite
images of sea surface glint revealed ~100 m spectral anomalies in km^2
averaging patches in regions leading from the Honolulu Sand Island Municipal
Outfall diffuser to distances up to 20 km. To determine the mechanisms behind
this phenomenon, the RASP expeditions monitored the waters adjacent to the
outfall with an array of hydrographic, optical and turbulence microstructure
sensors in anomaly and ambient background regions. Drogue tracks and mean
turbulence parameters for 2x10^4 microstructure patches were analyzed to
understand complex turbulence, fossil turbulence and zombie turbulence
near-vertical internal wave transport processes. The dominant mechanism appears
to be generic to stratified natural fluids including planet and star
atmospheres and is termed beamed zombie turbulence maser action (BZTMA). Most
of the bottom turbulent kinetic energy is converted to ~100 m fossil turbulence
waves. These activate secondary (zombie) turbulence in outfall fossil
turbulence patches that transmit heat, mass, chemical species, momentum and
information vertically to the sea surface for detection in an efficient maser
action. The transport is beamed in intermittent mixing chimneys.Comment: 8 pages, 7 figures, SPIE Optics+Photonics 2007 Coastal Ocean Remote
Sensing Aug. 27, San Diego, CA, see http://sdcc3.ucsd.edu/~ir11
Energetics of the Beamed Zombie Turbulence Maser Action Mechanism for Remote Detection of Submerged Oceanic Turbulence
Sea surface brightness spectral anomalies from a Honolulu municipal outfall have been detected from space
satellites in 200 km2 areas extending 20 km from the wastewater diffuser (Leung and Gibson 2004, Bondur
2005, Keeler et al. 2005, Gibson et al. 2006). Dropsonde and towed body microstructure measurements show
greatly enhanced viscous and temperature dissipation rates above the outfall trapping-layer. Fossil-turbulencewaves
(FTWs) and secondary zombie-turbulence-waves (ZTWs) break as they propagate near-vertically and
then break again near the surface to produce wind-ripple smoothing with narrow-wavelength λ patterns from the
soliton-like internal waves that supply turbulence energy to advected outfall fossils and to the ZTWs they
radiate. The λ = 30-250 m solitons reflect an efficient maser-action conversion of horizontal tidal and current
kinetic energy by bottom boundary layer turbulence events to near-vertical FTWs with λ the Ozmidov scale of
the events at fossilization. Secondary (zombie) turbulence amplifies, channels in chimneys, and near-vertically
beams ambient internal wave energy at scales λ just as energized metastable molecules amplify and beam
quantum wavelengths in astrophysical lasers and masers around stars. Kilowatts of buoyancy power from the
treatment plant produce fossil turbulence patches trapped below the thermocline. Beamed zombie turbulence
maser action (BZTMA) in mixing chimneys amplifies these kilowatts into the megawatts of surface turbulence
dissipation required to affect brightness on wide sea surface areas. The BZTMA vertical mixing mechanism
appears critical to vertical oceanic transport of information, heat, mass and momentum, and to the conversion of
barotropic tides to baroclinic tides
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