• 한국군사과학기술학회지
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• 제13권4호
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• pp.577-585
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• 2010

The Military Tactical Communication technology for effective network-centric warfare is developing. Targeting broadband wireless transmission, core technology for connection, and Transmission technology that secure survivability under High-speed Movement environment. On the one hand, Tactical data communication system that reflects military characteristic is developing on the base of Legacy communication equipment which is used in the field. Because almost every military units in the field have used voice to communicate which lower efficiency of operation, they have made effort to Substitute voice communication which delays military Operation Tempo to digital communication. The Communications environment of troops in Forward edge of battle field area is very poor. Especially in terms of limited frequency allocation and bandwidth. Therefore, improving the efficiency of frequency is essential for Military Tactical Communication. This paper is about The Data Compression Method for increase of Efficiency in Tactical Data Communication over Legacy Radios which are UHF, VHF, HF Radio. I proposed and proved the most efficient Data Compression Method that reflects military characteristic, after analyzing the experimentation, which simulate CAS(Close Air Support mission) data transmission between Pilot and TACP.

• 융합정보논문지
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• 제7권3호
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• pp.117-125
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• 2017

본 연구에서는 서울시 내에 소재하고 있는 화장품 브랜드샵에 종사하고 있는 판매원들을 대상으로 하여 의사소통과 사회적 지원이 조직몰입에 미치는 영향을 실증적으로 분석하였다. 조직몰입에 미치는 영향요인으로 의사소통과 사회적 지원을 독립변수로 설정하였다. 하위변수로 의사소통 요인은 공식적인 의사소통, 상사와 의사소통, 동료와 의사소통으로 설정하였고, 사회적 지원 요인의 하위 변수는 상사의 지원과 동료의 지원으로 설정하였다. 분석 결과 공식적인 의사소통, 상사와 의사소통, 동료와 의사소통으로 설정된 의사소통 요인은 판매원들의 조직몰입에 유의한 영향요인으로 분석되었고, 상사의 지원, 동료의 지원으로 설정된 사회적 지원은 상사의 지원 요인만이 판매원들의 조직몰입에 유의한 영향요인으로 분석되었다. 그러나 동료의 지원은 판매원들의 조직몰입에 유의하지 않은 영향요인으로 분석되었다.

• 한국전자통신학회논문지
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• 제17권3호
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• pp.521-528
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• 2022

새로운 철도 역사의 시작은 매년 진행되고 있다. 서울의 신림선은 통신기술을 기반으로 하는 신교통철도시스템이다. 신림선은 국가 표준규격인 KTCS-M을 기반으로 하는 국가 최초 무선통신기반 무인열차제어시스템으로 운용된다. 철도교통시스템에서 무선통신기술의 활용은 세계철도 시장으로의 수출 가능성을 시사한다. 이는 정부가 국내 철도산업을 육성하고 수출을 위해 다양한 지원 정책을 개발하고 시행한 결과이다. 본 논문에서는 국가가 시행하고 있는 철도산업기술의 국산화 지원 현황을 살펴보고, 철도부품의 해외 의존도를 벗어나 국산화 부품으로 대체되는 과정을 분석하였다. 이 과정에서 발생하는 산업체의 애로기술을 해결하기 위한 기술지원 플랫폼에 관하여 연구하였다. 향후 플랫폼의 구현과 활용을 위한 실행 개발이 필요하다. 향후 플랫폼이 구축되어 우리나라 산업체가 세계철도시장 수출 확장에 기여하는 기술력 향상에 필요한 도구로 활용되기를 기대한다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 춘계학술대회
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• pp.395-398
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• 2018

C-ITS 통신프로토콜과 이동 통신 프로토콜인 Legacy LTE 통신을 복합적으로 지원하는 하이브리드 V2X 통신시스템을 구현하기 위한 하드웨어 및 소프트웨어에 대한 설계 방안과 설계과정을 제시한다. 하이브리드 V2X 통신시스템은 복수의 통신기술로 WAVE와 LTE를 지원하고, WAVE에 대해서는 복수채널 통신을 지원하여, 자율주행 차량에 LDM, 측위보정정보 등의 도로정보를 실시간으로 전달하기 위한 목적으로 설계하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 학술대회 논문집 정보 및 제어부문
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• pp.255-257
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• 2004

The study for ubiquitous computing infra is proceeding actively, it make possible to use service and access network anywhere, anytime because of wire/wireless communication technology and progress of hardware. Domestically, study for the network mobility support technology which is the key technology for future ubiquitous computing realization have progressed, but that is insufficient. Especially, there is no study for independent mobility support study about railway wireless network. So, this study propose network mobility management technology for mobile network infra in railway and proper network model in train.

• 한국간호교육학회지
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• 제9권1호
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• pp.126-135
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• 2003

Purpose: The purposes of this study are as follows: Identifying the types of bullying; describing the relationship among social support, parent-adolescent communication and bullying types; identifying factors influencing the bullying. Method: 374 subjects were 5-6th grade students of two elementary schools in Daejeon. We collected the data from June 10 to October 29, 2002. The data were analyzed by using the frequency, ANOVA, pearson's correlation and stepwise multiple regression in the SPSS. Result: The 7 % of the subjects were found as bullies and another 23.8 % as victims, while 25.9 % were found as bully-victim group. The number of the victims in peer-support got less than in the normal or bully group. In the correlation analysis, the score of bullies, victims and bully-victim group were reversely-correlated with the social support. The score of victims was reversely-correlated with the mother-adolescent communication. In regression analysis, the social support influenced significant effects on both the bullies and victims. Conclusion: Findings indicated that the health professionals need to identify social support and parent-adolescent communication according to bullying types. Therefore, adequate approaches for the three independent groups of bullying are necessary.

• 한국정보전자통신기술학회논문지
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• 제9권6호
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• pp.534-538
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• 2016

This paper discusses the characteristics and effects of dielectric inner-supports on discone antenna for broadband RF test chamber, and the verification has been performed by simulation. Several design parameters such as the thickness of the gap support, the position of the side support, and the thickness of the side support has been analyzed. The thickness of the gap support affected the reflection coefficient. An effect of the offset of the side support from the center was slight below 3 GHz and significant above 3 GHz. The thickness of the side support did not affect the reflection coefficient or the gain much. The performance of the fabricated discone antenna was in good agreement with the simulated results. This investigation of a dielectric support effects could be used to design a commercial discone antenna for broadband RF test chamber, focusing on electrical performance and mechanical stability.

• 한국군사과학기술학회지
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• 제12권2호
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• pp.175-181
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• 2009

All of the military aircrafts in Korea Air Force are administered and operated together in the same system regardless of whether they are equipped with the data communication capability or not. The absence of the data communication capability in some of the aircrafts might increase whole kill chain hour at the point of the Network Centric Warfare achievement. Network synergy effects cannot also be desired if the section which is not connected to the network influences to the whole tactical network. Equipping aircrafts with the data communication capability could be done by upgrading the aircrafts, but resulting in high costs and long updating time. This paper is a research about the design and implementation of the UMPC based Data Link System to aircrafts that do not have the data communication capability. The proposed system grafts the UHF-based wireless modem technology and the aircraft flight mission support software onto the off-the-shelf UMPC and GPS system. The employed UHF radio equipment allows communicating tactic data with another aircrafts on the air, the ground control point, and even the Tactical Air Control Party(TACP) control vehicle that achieve missions with aircrafts. It thereby increases such capabilities as navigation aid, situation awareness, quick target identification and attack. We also applied Closed Air Support(CAS) scenarios, which is very close to the real environment, to the experiments of the proposed system. The experimental results show that the proposed system could support the data communication capability effectively and the flight mission at low costs of money and time.

• 농촌계획
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• 제13권1호
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• pp.51-62
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• 2007

This study examines empirically the characteristics of agricultural corporations in terms of their market and technology environment and the efficiency of the governmental support to the firms. Also the study analyzes the moderating effect of the environmental characteristics on the relationship between governmental supports and firm performance based on the concept of balanced performance. Test results show that firm tend to evaluate favorably their technology and market competitiveness of product quality and price and to require tools for reaction to changes of customer needs and technology or competing products and external corporation that is necessary for long-term technological competitiveness. As for governmental support, strategic support and service is much more appreciated than direct individual supporting item. Agricultural corporations with unfavorable market environment evaluate relatively high on their balanced performance. Correlations of balanced performance factors and technology environmental factors show all positive statistical significance. The moderating effect of the environmental characteristics on the relationship between governmental support and balanced performance can be interpreted that the support is provided without considering environmental aspect and based only on financial performance and as a result not to be satisfied by agricultural corporations with technological competitiveness.

• 한국정보전자통신기술학회논문지
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• 제11권5호
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• pp.556-564
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• 2018

The purpose of this study is to investigate the difference in social support and job satisfaction of disabled facility workers according to their general characteristics and job characteristics, and to understand the effect of social support on job satisfaction. A questionnaire was conducted against 143 disabled facility workers in D metropolitan city, from 5 January to 29 February 2016. The results of the study are as follows: first, no significant difference was found in the social support of disabled facility workers according to their general characteristics, and only the factor of job area showed significant difference in social support according to job characteristics. Secondly, there was no significant difference in job satisfaction of disabled facility workers according to their general characteristics or job characteristics. Thirdly, support of the superior, as a sub-factor of social support recognised by the disabled facility worker, was found to have a significant positive effect on job satisfaction. This study seeks to become foundational data for the development of plans to improve the job satisfaction of disabled facility workers.