Powerflux I
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Author | : E. A. Lewis |
Publisher | : |
Total Pages | : 28 |
Release | : 1975 |
Genre | : Integral equations |
ISBN | : |
A simple integral formulation is given for the radio wave power propagating between the curved earth and the ionosphere for the case of low frequency transmitters on the surface of the earth. By making assumptions about the vertical field profiles, the field strengths at arbitrary distances and altitudes can be estimated. Field strength versus distance predictions are compared with published mode and wave-hop calculations and with experimental data.
Author | : E. A. Lewis |
Publisher | : |
Total Pages | : 28 |
Release | : 1975 |
Genre | : Integral equations |
ISBN | : |
A simple integral formulation is given for the radio wave power propagating between the curved earth and the ionosphere for the case of low frequency transmitters on the surface of the earth. By making assumptions about the vertical field profiles, the field strengths at arbitrary distances and altitudes can be estimated. Field strength versus distance predictions are compared with published mode and wave-hop calculations and with experimental data.
Author | : |
Publisher | : |
Total Pages | : 368 |
Release | : |
Genre | : Environmental geology |
ISBN | : |
Author | : Jules Aarons |
Publisher | : |
Total Pages | : 252 |
Release | : 1984 |
Genre | : Ionosphere |
ISBN | : |
Author | : Air Force Cambridge Research Laboratories (U.S.) |
Publisher | : |
Total Pages | : 212 |
Release | : 1974 |
Genre | : Geophysics |
ISBN | : |
Author | : Alexander A. Samarskii |
Publisher | : CRC Press |
Total Pages | : 368 |
Release | : 2001-12-20 |
Genre | : Mathematics |
ISBN | : 9780415272803 |
Mathematical modeling is becoming increasingly versatile and multi-disciplinary. This text demonstrates the broadness of this field as the authors consider the principles of model construction and use common approaches to build models from a range of subject areas. The book reflects the interests and experiences of the authors, but it explores mathematical modeling across a wide range of applications, from mechanics to social science. A general approach is adopted, where ideas and examples are favored over rigorous mathematical procedures. This insightful book will be of interest to specialists, teachers, and students across a wide range of disciplines..
Author | : |
Publisher | : |
Total Pages | : 584 |
Release | : 1949 |
Genre | : Administrative law |
ISBN | : |
Author | : John P. Dakin |
Publisher | : CRC Press |
Total Pages | : 1616 |
Release | : 2010-12-12 |
Genre | : Technology & Engineering |
ISBN | : 1420012010 |
A field as diverse as optoelectronics needs a reference that is equally versatile. From basic physics and light sources to devices and state-of-the-art applications, the Handbook of Optoelectronics provides comprehensive, self-contained coverage of fundamental concepts and practical applications across the entire spectrum of disciplines encompassed by optoelectronics. The handbook unifies a broad array of current research areas with a forward-looking focus on systems and applications. Beginning with an introduction to the relevant principles of physics, materials science, engineering, and optics, the book explores the details of optoelectronic devices and techniques including semiconductor lasers, optical detectors and receivers, optical fiber devices, modulators, amplifiers, integrated optics, LEDs, and engineered optical materials. Applications and systems then become the focus, with sections devoted to industrial, medical, and commercial applications, communications, imaging and displays, sensing and data processing, spectroscopic analysis, the art of practical optoelectronics, and future prospects. This extensive resource comprises the efforts of more than 70 world-renowned experts from leading industrial and academic institutions around the world and includes many references to contemporary works. Whether used as a field reference, as a research tool, or as a broad and self-contained introduction to the field, the Handbook of Optoelectronics places everything you need in a unified, conveniently organized format.
Author | : Akira Miyazaki |
Publisher | : Springer |
Total Pages | : 130 |
Release | : 2015-06-01 |
Genre | : Science |
ISBN | : 4431556060 |
In this thesis, the author develops new high-power millimeter wave techniques for measuring the hyperfine structure of positronium (Ps-HFS) directly for the first time in the world. Indirect measurement of Ps-HFS in the literature might have systematic uncertainties related to the use of a static magnetic field. Development of the millimeter wave devices supports the precise determination of Ps-HFS by directly measuring the Breit-Wigner resonant transition from o-Ps to p-Ps without the magnetic field. At the same time, the width of the measured Breit-Wigner resonance directly provides the lifetime of p-Ps. This measurement is the first precise spectroscopic experiment involving the magnetic dipole transition and high-power millimeter waves. The development of a gyrotron and a Fabry-PĂ©rot cavity is described as providing an effective power of over 20 kW, which is required to cause the direct transition from o-Ps to p-Ps. Those values measured by the newly developed millimeter wave device pave the way for examining the discrepancy observed between conventional indirect experiments on Ps-HFS and the theoretical predictions of Quantum Electrodynamics.
Author | : Bin Zhou |
Publisher | : Frontiers Media SA |
Total Pages | : 385 |
Release | : 2024-07-30 |
Genre | : Technology & Engineering |
ISBN | : 2832552463 |
Prosumers, such as energy storage, smart home, and microgrids, are the consumers who also produce and share surplus energy with other users. With capabilities of flexibly managing the generation, storage and consumption of energy in a simultaneous manner, prosumers can help improve the operation efficiency of smart grid. Due to the rapid expansion of prosumer clusters, the planning and operation issues of prosumer energy systems have been increasingly raised. Aspects including energy infrastructure design, energy management, system stability, etc., are urgently required to be addressed while taking full advantage of prosumers' capabilities. However, up to date, the research on prosumers has not drawn sufficient attention. This proposal presents the need to introduce a Research Topic on prosumer energy systems in Frontiers in Energy Research. We believe this Research Topic can promote the research on advanced planning and operation technologies of prosumer energy systems and contribute to the carbon neutrality for a sustainable society.