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이종격투기장의 관계실행요인과 만족 및 관계유지의도의 구조모형분석
정용안(Jung Yong-An) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.2
The purpose of this study was to empirically analyze relationship marketing implement factors on satisfaction and relationship maintenance intention in the mixed martial arts gym. The subjects were mixed martial arts gym customer. 301 samples out 320 samples through convenient sampling method were adopted as a final data. We confirmed the goodness of fit test of the model, utilizing SPSS WIN Ver 13.0 and AMOS 5.0, and after which we tested each hypothesis. The results were as follows; First, instructor of relationship marketing implement factors had a significant influence on satisfaction. Second, program of relationship marketing implement factors had a significant influence on satisfaction. Third, facility of relationship marketing implement factors had a significant influence on satisfaction. Fourth, satisfaction had a significant influence on relationship maintenance intention. This paper attempts to relationship marketing implement factors that mixed martial arts gym make customer relationship maintenance intention by recognizing the importance and value of customer related marketing. Utilizing this relationship, it must establish the marketing strategy which can increase the sales and benefit of the enterprise in a very competitive environment.
CP-OFDM 기반 통신 시스템을 위한 주파수 동기화 오차 추정 기법
정용안(Jung Yong An),변상봉(Byun Sang Bong),신한재(Shin Han Jae),한동철(Han Dong Cheul),조수현(Cho Soo Hyun),이성훈(Lee Sung Hun) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.6
3GPP 5G NR 표준에서는 고속의 데이터 전송 및 주파수 선택적 페이딩 채널에 강건함을 위해 cyclic prefix orthogonal frequency division multiplexing (CP-OFDM)과 discrete Fourier transform spread OFDM (DFT-S-OFDM)을 채택하였다. OFDM 기반의 전송 방식은 각 서브캐리어들을 직교하게 중첩시켜 병렬전송함으로써 고속의 데이터 전송을 가능하게 하지만, 동기화 오차에 매우 민감하다. 특히 소수배 주파수 오차가 존재할 경우 직교성을 상실하게 되어 ICI가 발생하게 되고, 이는 시스템의 성능 저하를 발생시킨다. 이를 해결하기 위해 본 논문에서는 primary synchronization signal (PSS) 및 secondary synchronization signal (SSS)를 이용한 잔여 주파수 오차 추정기법을 제안한다. 컴퓨터 모의실험을 통해 5G NR의 채널 모델을 적용시키며 제안된 기법의 성능을 검증하였으며, 5G NR 시스템에 쉽게 적용할 수 있음을 확인하였다.
축구선수들이 선호하는 지도행동유형에 따른 선수만족 및 경기력의 관계
정용안(Yong An Jung) 한국사회체육학회 2009 한국사회체육학회지 Vol.0 No.38
The main purpose of this research is to analyze the differences between the high school soccer players preference according to leader type behaviour. Also, the investigation of the relationship between the athletes` satisfaction and performance and how it effects the leader behavior. The reason is to learn about how to improve the athletes` satisfaction and performance in competition. The result are as follows; First, there were significant differences in soccer players` preference to a leader`s behavior type according to socio-demographic variables. Second, the player`s preference of leader style had a partially statistically influence on athletes` satisfaction. Third, the player`s preference of leader style had a partially statistically influence on performance.