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중 · 고등학교 검도 선수들의 경기 성패귀인 유형에 관한 연구
정찬영(Chan-Young Jeong),박동철(Dong-chu Park) 대한검도학회 2014 대한검도학회지 Vol.25 No.1
본 연구는 사회심리학적 측면에서 검도 수행에 영향을 미치는 심리적 기제 등의 상호작용과 원인결과의 관계를 규명하기 위하여 시도로서 중고등학교 검도선수의 경기성패요인이 귀인형태에 미치는 영향을 규명하고자 한다. 이를 위하여 2011년 8월 15일부터 8월 16까지 열린 제40회 문화체육관광부장관배 전국학생검도대회에 참가한 중고등학교 250 명의 선수들을 대상으로 실시한 결과 다음과 같은 결론을 얻었다. 첫째, 중, 고등학교 검도 선수의 종별에 따른 경기성패요인 및 귀인유형의 차이는 경기성패요인에서만 집단 간 유의한 차이가 있는 것으로 나타났다. 둘째, 중, 고등학교 검도 선수의 선수경력에 따른 경기성패요인 및 귀인유형의 차이는 경기성패요인 중 수행정확도 요인과 귀인유형의 하위요인인 노력요인에서만 유의한 차이가 나타났다. 셋째, 중, 고등학교 검도 선수의 입상경력에 따른 경기성패요인 및 귀인유형의 차이는 경기성패요인 모두와 귀인유형의 하위요인 중 능력과 동료요인에서 유의한 차이가 있는 것으로 나타났다. 넷째, 경기성패요인이 귀인유형에 미치는 영향으로는 수행정확도는 노력에 유의한 영향을 미치고 있는 것으로 나타났으며, 수행속도는 동료요인에 유의한 영향을 미치는 것으로 나타났다. This study attempted to clarify the interplay and causality of psychological mechanisms affecting kendo performance from the perspective of social science. Accordingly, the present study identified the effects of the factors for winning or losing matches on attribution types among kendo players in secondary schools. For this, a total of 250 secondary students were recruited as subjects among those who participated in the 40th National Students’ Kendo Matches for the Minister of Culture, Sport and Tourism’s Cup held on August 15 ∼16, 2011. The confidence Cronbach’s α of the questionnaire used here was .506 ∼ .751, indicating a relative internal consistency. The statistic methods used for this study included frequency analysis, T-test, one-way ANOVA, confidence analysis, correlation analysis and regression analysis. These analyses gained the following results. First, as for the difference in factors for winning or losing matches among kendo players in secondary schools depending on types of kendo, a significant difference was found between groups only in terms of factors for wining and losing matches. Second, as for the difference in factors for winning or losing matches and in attribution types depending on secondary kendo players’ career, significant differences were found only in the performance correctness factor out of the factors for winning or losing matches and in the effort factor, a sub-factor of attribution types. Third, in terms of the difference in factors for winning or losing matches and in attribution types depending on award winning history of secondary kendo players, significant differences were found in all of the factors for wining or losing matches and the effort and colleague factors, sub-factors of attribution types. Fourth, regarding the effects of the factors for winning or losing matches on attribution types, the performance correctness was found to affect the efforts, and the performance speed was found to influence the colleague factor.
싱글 LC-탱크 전압제어발진기를 갖는 2~6㎓의 광대역 CMOS 주파수 합성기
정찬영(Chan-Young Jeong),유창식(Changsik Yoo) 大韓電子工學會 2009 電子工學會論文誌-SD (Semiconductor and devices) Vol.46 No.9
본 논문은 싱글의 LC-탱크 전압제어발진기(VCO)를 사용한 2∼6㎓의 CMOS 주파수 합성기에 관하여 기술하였다. 광대역에서 동작하는 주파수 합성기 설계를 위해 최적화된 로컬발진기(LO) 신호 발생기를 사용하였다. LO 신호 발생기는 LC-탱크 VCO와 이 신호를 분주하고 혼합하는 방법으로 광대역의 주파수에서 동작하도록 구현하였다. 주파수 합성기는 3차 1-1-1 MASH 타입의 시그마-델타 모듈레이터(SDM)를 사용한 소수 분주 위상잠금루프(PLL)에 기초로 설계되었다. 제안한 주파수 합성기는 0.18㎛ CMOS 공정기술을 사용하여 설계하였고, off-chip 루프 필터를 가지고 0.92㎟의 칩 면적을 차지하며, 1.8V 전원에서 36㎽ 이하의 전력을 소모한다. PLL은 8㎲보다 적은 시간에서 록킹을 완료한다. 위상 잡음은 중심 주파수 신호로부터 1㎒ 오프셋에서 -110㏈c/㎐보다 작다. This paper describes a 2∼6㎓ CMOS frequency synthesizer that employs only one LC-tank voltage controlled oscillator (VCO). For wide-band operation, optimized LO signal generator is used. The LC-tank VCO oscillating in 6∼8㎓ provides the required LO frequency by dividing and mixing the VCO output clocks appropriately. The frequency synthesizer is based on a fractional-N phase locked loop (PLL) employing third-order 1-1-1 MASH type sigma-delta modulator. Implemented in a 0.18㎛ CMOS technology, the frequency synthesizer occupies the area of 0.92㎟with off-chip loop filter and consumes 36㎽ from a 1.8V supply. The PLL is completed in less than 8㎲. The phase noise is -110㏈C/㎐ at 1㎒ offset from the carrier.
SARS-CoV-2 감염으로 인한 폐렴의 위험인자: 후향적 코호트 연구
정찬영 ( Chan Young Jeong ),고성민 ( Sung Min Ko ),오홍상 ( Hong Sang Oh ) 국군의무사령부 2020 대한군진의학학술지 Vol.51 No.1
Objective; We retrospectively analyzed 310 patients with SARS-CoV-2 infection who were admitted to the Armed Forces Daegu Hospital to report the clinical characteristics of COVID-19 and the risk factors for pneumonia caused by SARS-CoV-2 infection. Method; This was a single center, retrospective cohort study. Clinical information of 312 COVID-19 patient was obtained by electronic medical record review. Clinical differences between the pneumonia group and without pneumonia group were analyzed. Results; Altogether, 312 COVID-19 patients were admitted to the AFDH from March 5 to April 19 and 310 were retrospectively analyzed. Compared with the without pneumonia group, the pneumonia group showed statistically significant differences in age. BMI, smoking history, underlying disease Conclusion; Risk factors for pneumonia in these patients were old age, underlying disease, smoking history, and obesity.
정찬영 ( Chan Young Jeong ),배은경 ( Eunkyoung Bae ),이순영 ( Soonyoung Lee ),황점숙 ( Jeomsuk Hwang ),고성민 ( Sungmin Ko ),김현영 ( Hyeon Young Kim ),오홍상 ( Hong Sang Oh ) 국군의무사령부 2021 대한군진의학학술지 Vol.52 No.1
Introduction; South Korea is one of the exemplary countries that have successfully responded to COVID-19 pandemic with the South Korean military having only a small number of confirmed patients. This study aimed to provide basic data for establishing a strategy in response to COVID-19 in the future by analyzing the epidemiological and clinical characteristics of patients in the Republic of Korea Armed Forces military. Method; The materials were collected through electronic medical records and telephone interviews, while descriptive analysis was performed for the statistical analysis of clinical and epidemiological characteristics. Result; From February 20 to September 2, 2020, 110 patients were confirmed cases of SARS-CoV-2 infection in the ROK military. The number of confirmed cases due to cluster infection was 63.6%, of which 62.9% were enlisted. The prevalence of COVID-19 in the ROK military was 17.7 per 100,000 persons. The median age was 22 years, and 94.5% of patients were men. The primary infection rate was 59.4%, followed by 34.2%, and 5.4%. The common symptoms were fever and cough during the entire hospitalization period. Moreover, radiological diagnosis of pneumonia was confirmed in 17.3% of patients. The incubation period was five days, and there was no deceased case among the confirmed cases; hence, the case fatality rate was 0%. Conclusion; The timing and region of the outbreak in patients in the military was affected by the pattern and status of confirmed cases in the entire country. Enlisted were more vulnerable and affected mainly by cluster infection. The military response to COVID-19 has been effective so far, while the military can prevent the spread of COVID-19 by implementing a stronger quarantine system to preserve combat power.