Atmospheric radio ducts can trap VHF/UHF radio waves and propagate them over long distances. 284.4625 MHz Japanese radio wave signal measurements show that the radio waves are propagated to Korea coastal regions when ground temperatures exceed 10◦C. This paper discusses the reasons for the existence of this critical temperature threshold. key words: radio duct, duct propagation, critical temper...

This paper aims to better understand the relationship between HIV knowledge and media exposure in India. We use a two-stage hurdle model to estimate the effect of media sources such as newspapers, radios and television on AIDS-related knowledge among Indian men and women using demographic health survey data. Overall, access to newspapers, radio, or television increases the likelihood of better ...

Streaming is growing rapidly in the world, and streaming gradually replacing television, radio cinema. The American company Netflix one of them. In this paper, author will explore exactly how success Netflix, a that started out as small DVD rental company, became most successful world. Currently, companies. After film television industry not be same. So it important to study company’s understan...

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