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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
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 3, Issue 1 - Dec 1978
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A Historical Study of the Communication System in the Later Part of the Lee-Dynasty
The Journal of Korean Institute of Communications and Information Sciences, volume 3, issue 1, 1978, Pages 8~17
The later part of the Lee-Dynasty was a period that marked an important turning point in the history of the modern communication system in our country. This paper proposes to research the historic process of initiation and development of the modern communication system in that period through the communication administrative organ and the installation of the wire communication lines such as wastward lines, southward lines and northward lines extended from Han Seung (Seoul) as well as the submarine cables from Korea to Japan. The modernization of the communication system in our country had been achieved in the struggle of national uprising spirits of Korean people against the invasive avarices of the neighbouring nations such as Japan and China. The initiation of the modern communication system played a leading role in civilizing our country. Thus the fair spirits of our forerunners who had schemed to develop the independent communication system should be valued enormously.
A Study on the Theory of
Noise in Electronic Devies
The Journal of Korean Institute of Communications and Information Sciences, volume 3, issue 1, 1978, Pages 18~25
The 1/f noise spectrum of short-circuited output drain current due to the Shockley-Read-Hal] recombination centers with a single lifetime in homogeneous nondegenerate MOS-field effcte transtors with n-type channel is calculated under the assumptions that the quasi-Fermi level for the carriers in each energy band can not be defined if we include the fluctuation for time varying quantities. and so 1/f noise is a majority carrier effect. Under these assumptions the derived 1/f noise in this paper show some essential features of the 1/f noise in MOS-field effect transistors. That is, it has no lowfrequency plateau and is proportionnal to the channel cross area A and to the driain bias voltage Vd and inversely proportional to the channel length L3 in MOS field effect transistors. This model can explain the discrepancy between the transition frequency of the noise spectrum from 1/f- response to 1/f2 and the frequency corresponding to the relaxation time related to the surface centers in p-n junction diodes. In this paper the results show that the functional form of noise spectrum is greatly influenced by the functional forms of the electron capture probability cn (E) and the relaxation time r (E) for scattering and the case of lattice scattering show to be responsible for the 4 noise in MOS fold effect transistors. So we canconclude that the source of 1/f noise is due to lattice scattering.
Professional Speciality of Communication Administration and, Occupational Group and Series Classes of Position in National Public Official Law -for Efficiency of Telecommunication Management-
The Journal of Korean Institute of Communications and Information Sciences, volume 3, issue 1, 1978, Pages 26~27
It can be expected that intelligence and knowledge will be the core of the post-industrial society in a near future. Accordingly, the age of intelligence shall be accelerated extensively to find ourselves in an age of 'Communication' service enterprise. The communication actions will increase its efficiency and multiply its utility, indebted to its scientic principles and legal idea. The two basic elements of communication action, that is, communication station and communication men are considered to perform their function when they are properly supported and managed by the government administration. Since the communication action itself is composed of various factors, the elements such as communication stations and officials must be cultivated and managed by specialist or experts with continuous and extensive study practices concerned. With the above mind, this study reviewed our public service officials law with a view to improve it by providing some suggestions for communication experts and researchers to find suitable positions in the framework of government administration. In this study, I would like to suggest 'Occupational Group of Communication' that is consisted of a series of comm, management positions and research positions in parallel to the existing series of comm, technical position. The communication specialist or expert is required to be qualified with necessary scientific knowledge and techniques of communication, as well as prerequisites as government service officials. Communication experts must succeed in the first hand to obtain government licence concerned in with the government law and regulation, and international custom before they can be appointed to the official positions. This system of licence-prior-to-appointment is principally applied in the communication management position. And communication research positions are for those who shall engage themselves to the work of study and research in the field of both management and technical nature. It is hopefully expected that efficient and extensive management of communication activities, as well as scientific and continuous study over than communication enterprise will be upgraded at national dimensions.
A Study on pluralistic Reformation for Education of Telecommunication -for Establishment of Individual System for Comm. Education-
The Journal of Korean Institute of Communications and Information Sciences, volume 3, issue 1, 1978, Pages 28~30
Communication actions as a social band or Human community stick (fast) to human being ceaselessly w without stopping everywhere. All of comm. actions can be kept up and developed by the education of its own. Comm. actions have to include a character of social process, and so for it the social science should t to be some essential part of it. Therefore, Comm. education have to be schemed for achieving with a point of view of synthetical s science including technical and social factor. However, recentry Comm. education be suffered to lose of itowns essential attribute and individual i independence becausing to reduce social weight recklessly in their education It is a prindiple that Comm. science is an integrate science being composed of human, social and t technical subdepartments and so comm. education have to obey for Comm. constuctional theory, i international and social claim. Originally in Korea a educational idea and genealogy forming by the comm. scientific theory has I inherited on orthodoxy. But in 1961, communication college that is only the orthodox model of Comm. education, was f forced to close by some reckless policy and then the national administration for the Comm. education h have been weakened, and so recently it’s education became to degenerate as out of genealogy or n nonsystem alike some scattering Family. On the other side, today comm. science make to it’s modern scientific factor and to keep its l integrate level, therefore, all of educational provisions and administration for the telecomm. should t to be supplement to be fit for their plural chatacters. Comm. education have to occupy an individual educational system through the comm. theory, and t then it can be coexisted with neighbour scientific field equally and can include, connect coordinate o or effect its inference in each subfactor organically. Finally, educational system for telecommunication should to be requested as preeedence that i independent field including pluralism must be formed and sufficient autonomy be guarenteed, and s so Comm. education must be to restored its orthodox genealogy and be recovered individual system a and seIfrestraint field, and then it can be accomplished its own duty for nation and society.
A Study of stimulating plant growth without fertilizers in a electro-magnetic field.
The Journal of Korean Institute of Communications and Information Sciences, volume 3, issue 1, 1978, Pages 31~34
This paper is an experimental arrangement developed by the author to test certain theories relative to stimulating plant growth in a electro-magnetic field. It was the invention and use of cheap chemical fertiliazers that effectively suppressed electro-cultural engineering. Today, however, we are in the position where nitrate pollution by these very fertilizers threaten not only our water supply but the entire ecological pancrama as well. Thus it would appear that the revival of electro-culture is not only desirable but imminently necessary.
A Study on the Recent Trends and Prospects of Maritime Mobile Communication
The Journal of Korean Institute of Communications and Information Sciences, volume 3, issue 1, 1978, Pages 35~39
Present system of maritime mobile communication is depend upon HF Band mostly. Due to the range of technical development activities for HF Band has reached to uppermost limit, it is going to be hard to meet the requirements of communication which would be increased in the future, by utilization of HF Band. Studying difficulties of realizing communication function and the uppermost limit of HF Band system, in order to seek more smooth communications under present system, I have been studying remedy of problems in using of HF Band system with examples of relay of free-charge telegrams for the group of an ocean-going vessels of our country, and analized and studied of future prospects of maritime mobile communication.