초·중학생의 생활양식과 주의력 결핍, 과잉행동/충동성, 인터넷 과다사용 간 관계에 관한 탐색적 연구

양모현(Mo-Hyun Yang),강은진(Eun-Jin Kang),이동훈(Dong-Hun Lee) 한국콘텐츠학회 2018 한국콘텐츠학회논문지 Vol.18 No.11

본 연구는 초 · 중학생의 주의력 결핍, 과잉행동/충동성, 인터넷 과다사용 등의 행동문제에 영향을 주는 생활양식 요인들을 알아보는데 목적이 있다. 초등학생 889명과 중학생 676명의 자기-보고 자료와 학생의 주의력 결핍과 과잉행동 및 충동성 증상에 대한 담임교사의 보고를 분석에 사용하였다. 생활양식은 가족과의 상호작용 기회, 수면시간, TV 시청시간, 게임시간, 아침식사 횟수, 가공식품 섭취 횟수, 과외 횟수 및 시간으로 측정하였다. 단계적 회귀분석 결과, 초등학생과 중학생 모두에서 게임시간, 가공식품 섭취 횟수가 많을수록, 가족과의 상호작용 기회가 적을수록 주의력 결핍 증상이 높았다. 초등학생의 경우 게임시간 TV 시간, 가공식품 섭취횟수가 많을수록, 보호자와 함께 하는 시간이 적을수록 과잉행동 및 충동성이 높았지만, 중학생의 경우 생활양식 변인들은 과잉행동 및 충동성에 대한 설명량이 낮았다. 초등학생과 중학생 모두에서 게임 시간이 많을수록, 보호자와 함께 하는 시간이 적을수록 인터넷 과다사용 증상이 높았다. 본 연구는 청소년의 행동문제에 대한 게임 및 TV 사용, 가공식품 섭취의 영향력을 고려하고, 가족과의 상호작용을 높이는 방향의 중재를 제안한다. The purpose of this study is to investigate the lifestyle factors influencing behavioral problems such as Inattention, hyperactivity/impulsivity, and internet overuse in elementary and middle school students. Data from 889 elementary school students and 676 middle school students were used and teacher reporting on students’ attention deficit and hyperactivity and impulsivity symptoms was also included in the analysis. Lifestyle included opportunities for family interaction, sleep, watching TV, playing Video games, eating breakfast, eating junk food, and private education. As a result of stepwise regression analysis, Video games, junk foods, and family interactions significantly predicted the inattention of elementary and middle school students. Video games, TV, junk foods, and family interactions significantly predicted elementary school students’ hyperactivity and impulsivity, but the lifestyle variables hardly accounted for the hyperactivity/impulsivity of middle school students. Video game, and family interactions significantly predicted Internet overuse for both elementary and middle school students. Current study suggest that family interaction opportunities and the use of video games, TV and junk food should be considered to intervene in behavior problems.

과속운전 결과기대가 과속운전 의도 및 행동에 미치는 영향

양모현 ( Yang Mo-hyun ),오주석 ( Oh Ju-seok ) 한국도로교통공단 2017 교통안전연구 Vol.36 No.-

Over-speeding is very risky driving behavior and also regulatory offence behavior with drivers’ intention. So far, several theories such as theory of planned behavior have been mainly applying to reveal how drivers’ psychological factors affect over-speeding behavior, but positive and negative expectancy about the results of over-speeding are not considered relatively. Therefore, this study was performed to exam how drivers’ psychological factors affect over-speeding behavior. Goal-oriented behavior theory, as well as theory of planned were applied to confirm whether drivers’ expectancy determine over-speeding intention and behavior or not. Multiple regression analysis was performed using 338 drivers’ data, and the results showed that drivers’ positive or negative expectation about the results of over-speeding were significant factors to explain over-speeding intention, but were only significant factors to explain over-speeding behavior mediating intention indirectly.

자해와 자살행동 메타분석 연구 개관: 생물심리사회모델에 따른 위험 및 보호요인을 중심으로

김성연(Kim, Seong-Yeon),양모현(Yang, Mo-Hyun),박효은(Park, Hyo-Eun),김지윤(Kim, Ji-Yun),이동훈(Lee, Dong-Hun) 한국교육치료학회 2023 교육치료연구 Vol.15 No.1

메타분석 연구는 특정 주제와 관련하여 여러 개별연구에서 다룬 변인들을 객관적이고 체계적인 방식으로 포괄하는 장점이 있다. 본 연구는 상호 연관성이 높음에도 그간 분리되어 연구된 자해와 자살의 영향요인을 통합적으로 살펴보고자 자해 및 자살 관련 메타분석 연구 문헌을 고찰하여 생물심리사회모델에 따라 영향요인을 개관하였다. 국내외 12개 학술 데이터베이스를 이용하여 17편(자해 3편, 자살 14편)의 메타분석 논문을 최종 선정하였다. 분석 결과, 청소년 자해와 자살에서 공통으로 연구된 위험요인은 10개, 보호요인은 3개, 청소년 자해에만 연구된 위험요인은 22개, 보호요인은 7개, 청소년 자살에만 연구된 위험요인은 10개, 보호요인은 12개가 확인되었다. 전체연령 대상 연구에서 자해와 자살의 공통 위험요인은 7개, 자살에만 연구된 위험요인은 24개가 확인되었고, 보호요인은 확인되지 않았다. 이처럼 자해와 자살 연구의 영향요인은 공통되는 요인과 차별적으로 연구된 요인이 확인되어 향후 공통 및 차별 영향요인을 통합적으로 고려할 필요가 있겠고, 위험요인에 비해 밝혀진 보호요인이 현저히 적어서 보호요인에 대한 활발한 탐색과 검증이 필요하겠다. Meta-analysis research encompasses the variables dealt with in several individual studies objectively and systematically. To comprehensively examine the factors influencing self-injury and suicide, this study analyzed 17 meta-research literature that was searched through domestic and abroad databases. As a result, ten risk factors and three protective factors were commonly identified in youth self-injury and suicide, 22 risk factors and seven protective factors were identified in youth self-injury only, and ten risk factors and 12 protective factors were identified in youth suicide only. In the study for all ages, seven common risk factors for self-injury and suicide, 24 risk factors were identified only for suicide, and no protective factors were identified. Many common and discriminatory influencing factors were placed, and the factors that have been differentially studied need to be considered in an integrated way in the future.

유전 및 육종 : 단형질 개체모형을 이용한 한우 육종가 추정프로그램 개발

구양모 ( Yang Mo Koo ),김정일 ( Jung Il Kim ),송치은 ( Chi Eun Song ),이기환 ( Ki Hwan Lee ),신재영 ( Jae Young Shin ),장현기 ( Hyun Gi Jang ),최태정 ( Tae Jeong Choi ),김시동 ( Di Dong Kim ),박병호 ( Byoung Ho Park ),조광현 ( Kwa 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.5

Estimate breeding value can be used as single trait animal model was developed directly using the Fortran language program. The program is based on data computed by using the indirect method repeatedly. The program develops a common algorithm and imprves efficiency. Algorithm efficiency was compared between the two programs. Estimated using the solution is easy to farm and brand the service, pedigree data base was associated with the development of an improved system. The existing program that uses the single trait animal model and the comparative analysis of efficiency is weak because the estimation of the solution and the conventional algorithm programmed through regular formulation involve many repetition; therefore, the newly developed algorithm was conducted to improve speed by reducing the repetition. Single trait animal model was used to analyze Gauss-Seidel iteration method, and the aforesaid two algorithms were compared thorough the mixed model equation which is used the most commonly in estimating the current breeding value by applying the procedures such as the preparation of information necessary for modelling, removal of duplicative data, verifying the parent information of based population in the pedigree data, and assigning sequential numbers, etc. The existing conventional algorithm is the method for reading and recording the data by utilizing the successive repetitive sentences, while new algorithm is the method for directly generating the left hand side for estimation based on effect. Two programs were developed to ensure the accurate evaluation. BLUPF90 and MTDFREML were compared using the estimated solution. In relation to the pearson and spearman correlation, the estimated breeding value correlation coefficients were highest among all traits over 99.5%. Depending on the breeding value of the high correlation in Model Ⅰ and Model Ⅱ, accurate evaluation can be found. The number of iteration to convergence was 2,568 in Model Ⅰ and 1,038 in Model Ⅱ. The speed of solving was 256.008 seconds in Model Ⅰ and 235.729 seconds in Model Ⅱ. Model Ⅱ had a speed of approximately 10% more than Model Ⅰ. Therefore, it is considered to be much more effective to analyze large data through the improved algorithm than the existing method. If the corresponding program is systemized and utilized for the consulting of farm and industrial services, it would make contribution to the early selection of individual, shorten the generation, and cultivation of superior groups, and help develop the Hanwoo industry further through the improvement of breeding value based enhancement, ultimately paving the way for the country to evolve into an advanced livestock country.

유전 및 육종 : 우리나라 Holstein 젖소의 유효집단크기 조사 연구

운정일 ( Jeong Il Won ),김시동 ( Si Dong Kim ),조광현 ( Kwang Hyun Cho ),민홍립 ( Hong Lio Min ),구양모 ( Yang Mo Koo ),윤호백 ( Ho Baekyoon ) 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.5

This study was carried out to estimate the average inbreeding coefficients and effective population size(EPS) and to seek alternatives on the problems of Holstein cattle in Korea. The data used in this study was obtained from the Korean Animal Improvement Association(KAIA) and 635,268 heads of Holstein records out of 1,872,195 Holstein registration data were used for the analysis. The average inbreeding coefficients were estimated at a range of 0.11 to 1.07%. The average inbreeding coefficients at the 14th, 19th and 22nd generation were estimated at 0.43%, 0.92% and 1.07%, respectively. The estimated inbreeding coefficients within the range of 0%, 0 to 6.25%, 6.25 to 12.5%, 12.5 to 25%, and >25% were observed in 50.5%, 48.3%, 0.8%, 0.1%, and 0.3% of the animals, respectively. The estimated effective population size(EPS) was 619 heads from the 8th to 22nd generation, and 922 heads from the 19th to 22nd generation.