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Study on Several Radio Propagation Models in ITU - R Recommendations

Zhang Minggao

Strategic Study of CAE 2000, Volume 2, Issue 7, Pages 74-78

Abstract: reflection fading in maritime mobile satellite telecommunications, conversion method for ionosphereic scintillation

Keywords： radio propagation tropospheric scatter sea reflection ionospheric scintillation attenuation by atmospheric

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Recent Developments in Functional Crystals in China Review

Jiyang Wang, Haohai Yu, Yicheng Wu, Robert Boughton

Engineering 2015, Volume 1, Issue 2, Pages 192-210 doi: 10.15302/J-ENG-2015053

Abstract:

Functional crystals are the basic materials for the development of modern science and technology and are playing key roles in the modern information era. In this paper, we review functional crystals in China, including research history, significant achievements, and important applications by highlighting the most recent progress in research. Challenges for the development of functional materials are discussed and possible directions for development are proposed by focusing on potential strengths of these materials.

Keywords： functional materials laser crystals nonlinear optical crystals scintillation crystals relaxor ferroelectric