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To promote awareness, understanding, advancement and application of ocean engineering and marine technology. This includes all aspects of science, engineering, and technology that address research, development, and operations pertaining to all bodies of water. This includes the creation of new capabilities and technologies from concept design through prototypes, testing, and operational systems to sense, explore, understand, develop, use, and responsibly manage natural resources.
Photovoltaic materials, devices, systems and related science and technology
International Geosicence and Remote Sensing Symposium (IGARSS) is the annual conference sponsored by the IEEE Geoscience and Remote Sensing Society (IEEE GRSS), which is also the flagship event of the society. The topics of IGARSS cover a wide variety of the research on the theory, techniques, and applications of remote sensing in geoscience, which includes: the fundamentals of the interactions electromagnetic waves with environment and target to be observed; the techniques and implementation of remote sensing for imaging and sounding; the analysis, processing and information technology of remote sensing data; the applications of remote sensing in different aspects of earth science; the missions and projects of earth observation satellites and airborne and ground based campaigns. The theme of IGARSS 2019 is “Enviroment and Disasters”, and some emphases will be given on related special topics.
The Annual IEEE PES General Meeting will bring together over 2900 attendees for technical sessions, administrative sessions, super sessions, poster sessions, student programs, awards ceremonies, committee meetings, tutorials and more
This is a conference with a focus on wireless components, applications, and systems that impact both our current and future life style. The conference's main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today's design compromises can trigger tomorrow's advanced technologies. Where dreams can become a reality. RWS is the cornerstone conference for Radio Wireless Week.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
Part I will now contain regular papers focusing on all matters related to fundamental theory, applications, analog and digital signal processing. Part II will report on the latest significant results across all of these topic areas.
Telephone, telegraphy, facsimile, and point-to-point television, by electromagnetic propagation, including radio; wire; aerial, underground, coaxial, and submarine cables; waveguides, communication satellites, and lasers; in marine, aeronautical, space and fixed station services; repeaters, radio relaying, signal storage, and regeneration; telecommunication error detection and correction; multiplexing and carrier techniques; communication switching systems; data communications; and communication theory. In addition to the above, ...
Computer, the flagship publication of the IEEE Computer Society, publishes peer-reviewed technical content that covers all aspects of computer science, computer engineering, technology, and applications. Computer is a resource that practitioners, researchers, and managers can rely on to provide timely information about current research developments, trends, best practices, and changes in the profession.
The design and manufacture of consumer electronics products, components, and related activities, particularly those used for entertainment, leisure, and educational purposes
Proceedings of the Institute of Radio Engineers, 1930
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418), 2000
The rubble leveling that accompanies the base mound construction for breakwaters and embankments takes place in demanding underwater environments involving extremely high risks. There is also concern about labor shortages and aging of divers. Moreover, harbor development sites have extended farther offshore in recent years, making it necessary to cope with more treacherous weather and deep-water conditions. Under these circumstances, ...
1995 International Geoscience and Remote Sensing Symposium, IGARSS '95. Quantitative Remote Sensing for Science and Applications, 1995
The application of synthetic aperture radar (SAR) for geologic mapping in Greenland is investigated by the Danish Center for Remote Sensing (DCRS) in co-operation with the Danish Lithosphere Centre (DLC). In 1994 a pilot project was conducted in East Greenland. The Danish airborne SAR, EMISAR, acquired fully polarimetric C-band data which, upon processing and calibration, was interpreted jointly by DCRS ...
2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011
The local scour depth is a key parameter in the design of levee engineering. Based on experiment data, a non-dimensional analysis for the prediction of local scour depth of slanting stream is presented. The maximum scour depth is related to the approach flow velocity, flow depth, flow angle, slope of levee and the particle size of the bed sediment. The ...
2010 International Conference on Mechanic Automation and Control Engineering, 2010
Changzhou Hydro-junction spans two islands and three rivers. The navigation lock is arranged in the right bank of Wai jiang river. The horizontal and reverse flow velocity of the outlet portal on the navigation lock is always the main issues of the hydraulic research on navigation lock, due to the influence of the complicated flow condition. After several measures are ...
The rubble leveling that accompanies the base mound construction for breakwaters and embankments takes place in demanding underwater environments involving extremely high risks. There is also concern about labor shortages and aging of divers. Moreover, harbor development sites have extended farther offshore in recent years, making it necessary to cope with more treacherous weather and deep-water conditions. Under these circumstances, in efforts to ensure safety and to shorten the process by speeding up operations, the demand for a safe underwater construction machine that can perform such tasks has been growing. In response to such demands, the "underwater backhoe", which mechanizes manual work performed by divers, has been developed. The device excels at tasks such as armor-stone leveling and rubble leveling required for base mound construction for breakwaters and embankments. This paper provides a background of underwater backhoe development and presents an overview of existing backhoes. It also introduces several instances of use in underwater work and considers several problems and areas for improvement.
The application of synthetic aperture radar (SAR) for geologic mapping in Greenland is investigated by the Danish Center for Remote Sensing (DCRS) in co-operation with the Danish Lithosphere Centre (DLC). In 1994 a pilot project was conducted in East Greenland. The Danish airborne SAR, EMISAR, acquired fully polarimetric C-band data which, upon processing and calibration, was interpreted jointly by DCRS and DLC. Several geologic phenomena are readily identified in the SAR imagery, while different lithologies seem to be indistinguishable because they have similar geomorphologies. The geologic mapping is complicated by an extreme topography leading to massive shadowing, foreshortening and layover. An artifact characterised by high cross- polarisation is observed behind many sharp mountain ridges. A multi-reflection hypothesis has been investigated without finding the ultimate proof.
The local scour depth is a key parameter in the design of levee engineering. Based on experiment data, a non-dimensional analysis for the prediction of local scour depth of slanting stream is presented. The maximum scour depth is related to the approach flow velocity, flow depth, flow angle, slope of levee and the particle size of the bed sediment. The test experience formula for estimation of the local maximum depth in gravel channel is also given, it can be employed for engineers in the determination of the levee engineering design.
Changzhou Hydro-junction spans two islands and three rivers. The navigation lock is arranged in the right bank of Wai jiang river. The horizontal and reverse flow velocity of the outlet portal on the navigation lock is always the main issues of the hydraulic research on navigation lock, due to the influence of the complicated flow condition. After several measures are carried out, including the conveyance conduit applied in the head of downstream guiding dike, the spurs applied the outside of the dike and optimal operation of the lock gate. The researches show that the horizontal and reverse flow velocity of the outlet portal is effectively controlled. The effectiveness is favorable through the auto-navigate ship model test. The results of this research can be served for similar projects reference.
Flood damage of regulating structures is a general phenomenon and it is difficult to be resolved. Block of the dam face is moved by fluid, erosion of foundation and bank around the dam is the main causes for the damage. For reducing the degree of damage, the methods of design and build techniques of traditional rock-fill dam,new structure are summarized and discussed. The new structures such as geotextile bag, mold-concrete have many advantages and good application prospect.
The first part of the paper describes a method of obtaining a picture of the damped vibrations of a quartz-plate resonator which occur when the excitation is removed by short-circuiting the electrodes between which the quartz plate lies. The build-up of vibrations after the short-circuit is removed is also shown. The quartz plate is short-circuited by means of a rotating commutator, and the resulting damped short-circuit current is caused to give a stationary damped-wave pattern on the cathode-ray-oscilloscope screen. Photographs of the patterns are easily obtained. Some interesting effects, such as variation of electrode air gap and pressure, are observed, and a few examples are shown. Since the damping or the Q of a circuit may be readily determined from the formula S = 1/n log A1/(An+1) applied to n decaying amplitudes from A1to An+1the logarithmic decrement is readily found. The Q is also readily found since it is related to the reciprocal of δ. Amplitudes A1and An+1may be measured on the screen or photograph of the pattern for determination of δ or Q, but a more satisfactory method of measurement of these quantities was developed, incorporating a form of the commonly used momentary contactor, such as is sometimes used in the determination of wave form of an alternator. The speed of the contactor provides a ready determination of the number of vibrations from A1to An+1. A working formula [equation (3)] is developed for rapid measurements of Q of the quartz plate.
Cyclo-stationary feature detection for scattered pilot OFDM symbol is accurate detection technique under low signal power. It is, however, problematic that guard interval insertion degrades the cyclo-stationary feature. We have proposed the silent period detection for the compensation of degrading cyclo- stationary. Even if the proposed technique achieved high accurate detection, it sacrifices the loss of guard interval energy. In this paper, we modify the proposed detection technique for cylco-stationary feature detection. For recovering the loss of energy, we propose double stage detector and combining technique. We show the effect of these modifications by computer simulation.
Based on deep study on economy-environment system relation, the article builds regional economy-environment coordinating development evaluation index system which includes sub-system of economy and environment, three factors of summation, structure and quality and 27 indexes and adopts economy-environment coordinating degree evaluation model to evaluate comprehensively economy- environment coordinating degree. The result shows that economy-environment system coordinating degree evaluation model can effectively evaluate regional coordinating development situation of economy-environment system during a certain period of time and it is practical valid method.
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