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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of Korean Institute of Communications and Information Sciences
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Journal DOI :
The Korean Institute of Communications and Information Sciences
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Volume & Issues
Volume 2, Issue 1 - Dec 1977
Selecting the target year
A Study on the Facing Problem for Science of Communication
The Journal of Korean Institute of Communications and Information Sciences, volume 2, issue 1, 1977, Pages 2~13
Along with the evolution of social phenomena such as politics, econmics, and culture, communication that is also one of social activities or social procedures has been developed as an independent science with integral characteristics.Originally formed in the United States of America in 1950s, the science of communication is now greatly spreading all over the world. Indebted to this world tendency, Korean Institute of Communication Science was inaugulated in February of 1575, acknowledging the need of accepting this science in Korea with the objectives to secure social and national development. The science of communication is to analyze its internal elements and search for the scientific trait and their relativities. Moreover, this science aims to contribute to human welfare by means of systematizing communication activities intimately related with various adjoining sciences. In other words, the science of communication is to logically systematize the principles and theories based on communication practices and to a great extent cultivate the applying theory and efficient method of communication.Accordingly, 1 would like to suggest that many scholars, educators, practitioner, and managers interested in communication fields have a new acknowledgment and outlook for· communication andeavor to make it scientific and self - independent .
Investigation about the Functions of Communication(in Respet of Social Side)
The Journal of Korean Institute of Communications and Information Sciences, volume 2, issue 1, 1977, Pages 14~19
Our social needs many kinds of different circulation method, so the function of communication has been changed the whole situation through the process of many transitions. The form of our civilization is changing into the social which is full of information owing to the development of mass communication. The value of using the information is murk heightening by it's own high dependence. The using of information is being rapidly enlarged, at the same time the development of technique on the information management is caused by the development of communication technique. Thus geometrical operation of both of the above has changed the function of communication. Maybe we will have to present all the primary factors on the communication transition from the social side in order to develop communication method.
A Study on the Recent Trends and Prospects of Maritime Satellite Communication Systems
The Journal of Korean Institute of Communications and Information Sciences, volume 2, issue 1, 1977, Pages 20~28
The shipping business which consistutes main stream of foreign trades in the world desires more larger and higher speed ships to convey a large amount of cargo at a time rapidly and safely. They also want to introduce new techniques into transportation system so to meet the rapid growing demand of maritime mobile communications with the improvement of efficiency of radio apparatus and reduction of the hard labors of radio operators mechanization and modernization of radio apparatus is necessary. Now HF band is used mainly for communications between maritime mobile stations and coast stations but the quality of received signal is not so good and the coverage is not sufficient by the condition of propagation of waves. There is also limitation of channel capacity in HF band. So to cope with or improve of these defects and meet the demands of modern maritime communication it is essential to introduce maritime satellite communication system in this field. By using the maritime satellite we can establish high quality communication circuits as maritime Telex, Faximile, high speed data transmission line and can expand coverages. Therefore industrial rationalization of marine transportation is possible with the reduction of painful labors of radio operators by improving safety and promoting of efficiency of movement of ships and freights. Obviously it is prospected that the introduction of maritime satellite communication system will bring a rapid promotion of its usuage in maritime mobile communication field and also anticipated that maritime satellite communication system will be a main current in maritime mobile communication field over the world in the near future with moderated cost of transmission links as in the case of INTELSAT in the past 10 years after its first launching.
A Proposal for Revising Hangeul Morse Code
The Journal of Korean Institute of Communications and Information Sciences, volume 2, issue 1, 1977, Pages 29~34
This paper points out that the current Hengeul Morse Code is not reasonable in view of information theory. Based on the statistics on Hangeul investigated in 1973, this paper proposes a Hangeul Morse Code with care to handling two compound characters as source symbols and considers its effect on transmission speed. Thus the transmission speed of revised Hangeul Morse Coda is improved about 21% with compare to that of current one.
A Study of Characteristics in Switching mode Modulator
The Journal of Korean Institute of Communications and Information Sciences, volume 2, issue 1, 1977, Pages 35~42
An analysis has been made about the performance of the switching-mode amplifier which can improve its efficiency higher than class C in audio amplification, and the improvement of characteristics and constitution in using it for modulator circuits was considered. As a result, the linearity of modulation up to 97% and the frequency response keeping flat up to 7, 200Hz have been observed.
커뮤니케이션의 사회적 역할
Gould, John W. ;
The Journal of Korean Institute of Communications and Information Sciences, volume 2, issue 1, 1977, Pages 43~44