• 한국언론정보학보
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• 제22권
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• pp.167-210
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• 2003

이 연구는 우리나라 지상파 방송사 조직에 있어서 여성인력의 지위를 지상파 방송사의 공식적, 비공식적 조직 구조의 측면에서 평가해 보고자 하였다. 이를 위해 대외적으로 이용가능한 공식적 통계자료에 근거한 양적 분석 및 1대1 면접, 전화인터뷰, 서면 질의 등을 통한 질적 분석이 병행되었다. 그 결과, 지난 10년간 우리나라 지상파 방송사의 여성 인력의 비중은 전체 인력 중 10% 내외의 미미한 수준에 불과하며, 수직적 직급 사다리의 최하위 직급에 위치하고 있는 것으로 드러났다. 수평적 직무분담 및 직위의 안정성면에서도 여성인력은 남성인력에 비해 상대적으로 불리한 위치에 처해 있고, 조직문화, 비공식적 네트워크, 멘토링 등 비공식적 조직 구조 측면에 있어서도 소외현상이 심각하다는 것을 알 수 있었다. 반면 최근 들어 기자, PD, 아나운서 등 방송사 핵심 인력 신규 채용에 있어서 여성 인력의 뚜렷한 신장세가 관측되고 있음은 고무적인 일로 평가된다.

• 전자공학회논문지
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• 제49권10호
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• pp.251-256
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• 2012

공중파 TV방송의 디지털 전환에 따른 막대한 자금이 투여되는 현 상황에서 지상파 방송의 매체 영향력은 신규의 유료 매체인 디지탈 케이블 TV 및 IPTV로 인해 감소될 가능성이 크기 때문에 신규 신성장 동력으로 모바일 TV시장을 확장이 필요하다. 국내 지상파방송 사업자들이 기존의 DMB사업으로 크게 성과를 보지 못하고 있는 실정에서 ATSC-M/H 기술 도입으로 방송 시스템 공급과 모듈의 수요가 증가할 것이 예상되고 있다. ATSC-M/H는 모바일 서비스를 위한 별도의 주파수 할당이 필요 없고 기존 ATSC 시스템에 간섭을 주지 않으면서 동시방송을 수행할 수 있는데, 안드로이드(Android) 휴대단말기 상에서 미국형 모바일 방송 수신 모듈을 개발하고자 한다. 본 논문은 안드로이드 플랫폼에서 임베디드 시스템이 적용되는 방송 모듈을 휴대 단말기에서 모바일 방송을 볼 수 있는 소프트웨어 모듈을 설계하고자 한다.

• International Journal of Internet, Broadcasting and Communication
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• 제14권1호
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• pp.201-208
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• 2022

As around the world, ground and underground transportation capacity is reaching its limit, centering on urban areas. As urban traffic becomes congested, time and cost are astronomical, and environmental destruction caused by urban pollution is becoming increasingly serious. As a way to solve this problem, the means of flying over the air are in the spotlight as the next generation of future transportation, and the concept of urban air mobility (UAM, Urban Air Mobility) is defined as systematic planning. The development of an electric-powered vertical take-off (eVTOL) aircraft that obtains electric power through a battery using a personal aerial vehicle (PAV) as a means of transportation has accelerated. As the aircraft development of new technology aircraft in the evtol method is actively carried out, the need to prepare systems such as aircraft certification standards, pilot qualification systems, and qualification management is emerging. The Federal Aviation Administration (FAA) and the European Union Aviation Safety Agency (EASA), which lead international standards, announced new special technical conditions and temporary regulations SCVTOL-01, respectively. However, the pilot qualification system for operating the uam aircraft has not yet been clearly announced. Therefore, this paper analyzes the recently announced FAA regulations and EASA regulations to identify differences and directions in perspectives on UAMs and study the existing vertical take-off and landing aircraft (VTOL) pilot qualification system to present directions for qualification classification.

• 항공우주정책ㆍ법학회지
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• 제8권
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• pp.297-332
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• 1996

It is well observed in the satellite telecommunication policy of several States that legal constraints imposed upon the service coverage of satellite telecommunication as well as broadcasting are to be relaxed in a progressive way. Major aspects of such policy change lie in the adoption of policy refusing traditional concept of national frontier. In the case of direct broadcasting satellite service, while a debate upon the legal issues regarding the spill-over effect of that service is no more major concern of the States, many multinational enterprises are looking for strategic alliance for regional or global DBS project. On the other hand, an implementation plan for connecting the world through global mobile personal communication satellite system is being pursued by several joint effort of multinational firms. Legal issues arise regarding the regulatory competence of each State, Especially, a controversial issue is concerning the sovereign right well recognized upon the regulation of telecommunication. This study is focusing upon the evolution of such policy change for the purpose of allowing us to expect future develpment of worldwide satellite telecommunication policy environment.

• 한국콘텐츠학회논문지
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• 제8권5호
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• pp.176-183
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• 2008

디지털TV의 등장은 고화질 화면, 선명한 음향이라는 텔레비전 프로그램 수신환경의 변화를 가져올 뿐만 아니라, 다중모드방송을 통해 복수의 채널로 프로그램을 전송할 수 있게 되어 지상파TV를 다채널화 할 수 있다. 본 연구에서는 주요 선진국의 디지털방송 전환 추세를 중점 추진전략을 중심으로 살펴보고, 멀티 캐스팅을 포함한 지상파방송의 디지털 프로그램 채널 운영전략에 나타난 특징들을 분석하여 우리나라 지상파 디지털 텔레비전 방송정책에 주는 시사점을 제시하고자 했다. 디지털 전환의 성공여부는 송신과 수신환경의 개선, 디지털방송의 고유한 장점을 살리는 고품질, 다기능 서비스의 제공 그리고 이를 뒷받침하는 정책이 다같이 조화를 이루어야 성공할 수 있을 것이다. 채널 운영 측면에서 영국은 HDTV보다는 다채널 SDTV의 활용에 주안점을 두고 있고, 미국 역시 지상파방송을 통해 시청자들에게 다양한 성격의 채널을 무료로 공급하는 방향으로 전환하고 있다.

• 한국언론정보학보
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• 제38권
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• pp.245-275
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• 2007

본 연구는 방송 환경에서의 갈등 요인을 정책과 관행을 포괄하는 제도 개념을 설정하고 있는 신제도주의적 관점에 입각하여 외주 정책과 시장 행위 간의 상호작용 과정을 조망하고자 하는 데 목적이 있다. 상호작용 과정을 조망해보기 위해 일차적으로 신제도주의적 관점에서 제시하고 있는 공식적 차원의 정책과 비공식적 차원에서의 관행 간의 상호작용 과정에 입각한 메커니즘을 경로의존성 개념을 통해 조망해봄으로써 새로운 관행으로의 정착에 이르기까지 필연적으로 발생할 수밖에 없는 갈등의 과정을 행위 주체 간의 관계를 통해 분석하고자 한다. 이를 통해 정책이 어떻게 변화하고, 그에 따른 행위가 다시 어떠한 메커니즘하에서 형성되는지의 과정을 이론적 차원에서 모델링해보는 데 본 연구의 궁극적인 목적이 있다.

• International journal of advanced smart convergence
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• 제4권1호
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• pp.54-63
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• 2015

Increasing air pollution levels and the global oil crisis has become a major hindrance in the growth of our automobile sector. Traditional Internal Combustion engines running on non-renewable fuels are proving to be the major culprit for the harmful effects on environment. With few modifications and also with assistance of few additional components current small SI engines can be modified into a pneumatic engine (commonly known as Compressed Air Engines) without much technical complications where the working fluid is compressed air. The working principle is very basic as adiabatic expansion of the compressed air takes place inside the cylinder pushing the piston downwards creating enough MEP to run the crank shaft at decent RPM. With the assistance of new research and development on pneumatic engines can explore the potential of pneumatic engines as a viable option over IC engines. The paper deals with analysis on RPM variation with corresponding compressed air injection at different crank angles from TDC keeping constant injection time period. Similarly RPM variation can also be observed at different injection pressures with similar injection angle variation. A setup employing a combination of magnetic switch (reed switch), magnets and solenoid valve is used in order to injection timing control. A conclusive data is obtained after detailed analysis of RPM variation that can be employed in newly modified pneumatic engines in order to enhance the running performance. With a number of benefits offered by pneumatic engine over IC engines such as no emissions, better efficiency, low running cost, light weight accompanied by optimized injection conditions can cause a significant development in pneumatic engines without any major alteration.

• ETRI Journal
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• 제43권3호
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• pp.400-413
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• 2021

This paper theoretically and empirically explores the reliability gain that can be obtained by installing multiple antennas in on-vehicle broadcasting receivers. Analytical derivations reveal that maximal-ratio-combining-based diversity allows a multi-antenna receiver (MR) to achieve significantly better coverage probability than a single-antenna receiver (SR). In particular, the notable MR gains for low-power reception and high-throughput services are highlighted. We also discuss various aspects of mobile MRs, including geometric coverage, volume of the users served, and impact of receiver velocity. To examine the feasibility of MRs in the real world, extensive field experiments were conducted, particularly with on-air ATSC 3.0 broadcast transmissions. Relying on the celebrated erroneous second ratio criterion, MRs with two and four antennas were verified to achieve notable reliability gains over SRs in practice. Furthermore, our results also prove that layered-division multiplexing can cope better with receiver mobility than traditional time-division multiplexing when multiple services are intended in the same radio frequency channel.

• 한국인터넷방송통신학회논문지
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• 제20권3호
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• pp.105-111
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• 2020

제주 윈드캐슬을 정의하고 그 주체인 한라산-오름-밭담의 상호관계를 최초로 분석했다. 제주에는 높이 1.5m의 밭담(Black Silk Road), 368개의 오름, 한라산 1950m, 모두 유니크한 풍광이다. 본 논문의 검증은 삼다수 지하수 채취 해수면이 한라산 높이와 같고 중성대 이론에서 이 문제를 수학적으로 완전하게 증명한다. 돈내코(해발700m)-백록담동릉-진달레밭-성판악-교래(453m)-윗세오름(1700m)은 Rain belt로 남동쪽에서 올라오는 북태평양 습도를 먹은 저기압 기단과 한라산 봉우리의 고기압의 찬공기가 부딪치는 -와+가 합해져서 제로가 되는 중성대이기 때문에 비가 많이 온다. 제주역사에서 한라산을 진산(鎭山)이라고 하는데 그 답은 윈드캐슬이다. 제주 오름 수는 한라산 포함 369이며 50m/s이상 불어오는 태풍에도 약 1.5m 높이인 밭담은 무너지지 않는다. 윈드캐슬의 핵(核)은 밭담 1.5m이고 그것은 삼각수이기 때문이다.

• 항공우주정책ㆍ법학회지
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• 제9권
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• pp.445-488
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• 1997

In the forthcoming 21st century new technical and scientific developments in outer space demands new approaches towards the problems arising in several fields of the use and exploitation of outer space including practical applications. The main purposes of this study are to analyze the legal problems of geostationary orbital position, telecommunication, direct television broadcasting by uses of artificial satellites. Communication via artificial Earth satellites was one of the first applications of space technology and is now one of the most developed field. From the technical and economic standpoints the advantages of world-wide satellites communication system are too all obvious. However, as the practical uses of space technology become more freguent, the legal conflicts among nations have become more divisive. One of the problem grown in uses of artificial satellites is that of the increasing shortage of suitable orbital slot positions for satellites, especially in geostationary orbit. Legal status of geostationary orbit as a limited resourece have to be reviewed in consideration of the side effect of the "First use, first-served" principle. The geostationary orbit is to be used for the benifits of all mankind and to be guaranteed for each state institutionaly in order to have eguitable access to the use of the orbit. Rapid increase of satellites broadcasting system in not only developed countries but also in developing countries opened up new possibilities with one another's scientific and cultural achievements. But there is also a potential danger that this powerful new instrument of influencing public opinion will be abused. Such a danger incudes spill-over or harmful interference. This controversial issue brings about the question whether prior consent from the receiver nation is needed to broadcast across international boundaries. Some states have rejected prior consent because it interfere with the free flow of information. Many other countries have opposed that opinion as an invasion and violation of sovereignty and as a violation of the 1967 Treaty and the UN Charter. Since declaration of the First Year of Outer Space in 1985, our country have promoted the plan of launching communication and broadcasting satellites. With the Koreasat launched in 1995 as the start, a real satellite-telecommunication era was opened in korea. According to this new development of our country, there will also rise various legal problems related to satellite broadcasting and telecommunication such as the inflow of foreign programs, the permeation of culture and the infringement of program copyright. Consequently the effective reactions to these problems in satellite-communication era should be tried including international cooperation. It is therefore to take into careful consideration the legal issues which may arise in outer space activities and to formulate positive policy on international cooperation with surrounding or advanced countries and international organization concerned. For this purpose the United Nations also prepares the UNISPACE III in 1999, to enable the international community to meet a more promising 21st century.