نتایج جستجو برای: broadcasting radio

تعداد نتایج: 120164  

Journal: :SIAM J. Discrete Math. 2003
Dariusz R. Kowalski Andrzej Pelc

We consider radio networks modeled as directed graphs. In ad hoc radio networks, every node knows only its own label and a linear bound on the size of the network but is unaware of the topology of the network, or even of its own neighborhood. The fastest currently known deterministic broadcasting algorithm working for arbitrary n-node ad hoc radio networks, has running time O(n log n). Our main...

Journal: :IEEE Systems Journal 2017
Chun Pong Lau Abdulrahman Alabbasi Basem Shihada

Traditional live TV broadcasting systems are proven to be spectrum inefficient. Therefore, researchers propose to provide TV services on 4G LTE networks. However, static broadcast, a typical broadcasting method over cellular network, is inefficient in terms of radio resource usage. To solve this problem, the Audience Driven live TV Scheduling (ADTVS) framework is proposed, to maximize radio res...

2012
Paula Cordeiro

Radio has always been part of our lives. It has also been a profitable business since the early days of broadcasting. Today, all sorts of digital devices have combined to create a ‘selfmedia’ environment that resituates radio, in the face of new challenges. This essay is based in a deeper understanding of radio broadcasting as a cultural industry and audience behavior to focus on groundbreaking...

Journal: :medical journal of islamic republic of iran 0
koorosh etemad department of epidemiology, school of public health, shahid-beheshti university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) parvin ebrahimi department of health services management, school of health management and information sciences, & health management and economics research center, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) hassan azimi community medicine department, faculty of medicine, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) mansoureh lotfi health services management, vice-chancellor for research, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) marzieh nojomi school of medicine, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)

background: media advertisements especially radio and tv are one of the most important and effective ways for health promotion and consumption of healthy productions worldwide. ministry of health and some other ministries in iran agreed to control and restrict the advertising of unhealthy products and services. therefore, adequate supervision and monitoring should be done in this field.  a cont...

2007
Eli M. Noam

The main broadcasting organization in Italy has been RAI, whose origins date back, indirectly, to 1910 when a Royal Law gave the Italian state the monopoly for all wireless and radio communications.' In 1924, during the Fascist era, the privately owned Italian Radio Union (URI) obtained a six-year, renewable monopolistic concession on broadcasting, subject to government censorship. URI was fina...

2015
Jin Ren Ting Zhang

The advance of wireless communications brings in various schemes of wireless digital communication technology. Analog communication and broadcasting services convert into digital services in many countries. The IBOC (InBand On-Channel) system has been developed to work in the same band with the conventional analog radio and broadcasting digital signal simultaneously. HDR (HD-Radio) standard of ...

Journal: :Journal of Discrete Algorithms 2007

Journal: :Journal of Computer and System Sciences 2009

1997
Donald S. Allen

Gutenberg invented movable type. It took another 40 years for an entrepreneur named Aldus to assemble what created book publishing as we know it. Marconi invented radio exactly 100 years ago. It took another 25 years for entrepreneurs in Pittsburgh and New York to create broadcasting. It was through broadcasting that radio reshaped our lives. Scott Cook, Chairman, Intuit Forbes ASAP, October 9,...

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