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Francis E. Barcus 《广播与电子媒介杂志》2013,57(4):355-369
Unlike a telephone or telgraph cable, a broadcast, once sent out over the air, can only be “stopped” at the receiving end. If the potential listeners have radio receiving sets able to pick up the broadcast, it can only be stopped by causing such radio interference as to make it difficult or impossible to listen to the original broadcast. Over the years, several nations have assumed the large cost of producing such interference, or “jamming,” so as to prevent their citizens from listening to the broadcasts of other nations. An expensive and often inefficient technique, jamming was then believed preferable to allowing unrestricted and uncensored international communication by radio. Mr. Ranjan Borra, who was associated with All India Radio and with the Voice of America for several years and is currently on the staff of the Library of Congress describes both the background and some of the encouraging recent developments in the field of jamming and other impediments to international broadcasting. 相似文献
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James Duncan Jr.'s American Radio: Spring '77 Report (Gilmore Advertising, 200 Michigan Bldg., Kalamazoo, Mich. 49006—$37.00 with a university rate of $28.00, paper) F. Earle Barcus' Commercial Children's Television on Weekends and Weekday Afternoons (Action for Children's Television, 46 Austin Street, Newtonville, Mass. 02160— $25.00, paper) Elmo I. Ellis' Opportunities in Broadcasting (Skokie, Ill.: National Textbook Co., 1977—$5.50/3.95) 相似文献
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Sydney W. Head's Broadcasts in America: A Survey of Television and Radio (Boston: Houghton-Mifflin, 1976--- price not given but about $16.00) Barcus, two studies of children's television program content Stuart Hood's The Professions: Radio and Television (North Pomfret, Vt.: David and Charles, 1975---$9.95) Televisions (Washington Community Video Center, P.O. Box 21068, Washington D.C. 20009---bimonthly/510 for individuals, $15 for institutions) Cable Television: Promise versus Regulatory Performance (Washington: House Committee on Interstate and Foreign Commerce, Submommittee on Communications, Committee Print, January 1976---free on request to the Committee Clerk) “Developing Legal Issues in Cable Communications,” The Catholic University of America Law Review 24:675-898 (Summer 1975) 相似文献
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Zarate Kary Barcus Courtney Lynn 《European Journal of Psychology of Education - EJPE》2023,38(3):1317-1340
European Journal of Psychology of Education - The professionalization of paraprofessionals through training is elemental in providing supports to students with disabilities. Through a systematic... 相似文献
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