성격과 자기효능감이 사격술에 미치는 영향: 메타버스 기반 영점 사격 및 실탄 영점 사격을 중심으로

이현엽(Hyunyup Lee),현승주(Seungju Hyun),이상규(Sangkyu Lee),이병학(Byounghwak Lee) 한국콘텐츠학회 2023 한국콘텐츠학회논문지 Vol.23 No.12

Psychological factors derived from individual differences, as well as perceptual-motor skills, can affect rifle marksmanship. Given that personality and self-efficacy are significantly related to shooting-related performance, this study aimed to examine the effects of personality and self-efficacy on shooting performance among 299 shooters who had never fired with live ammunition, using an metaverse-based shooting system that simulates with six-degrees of freedom trajectories of various projectiles and live-bullet zeroing-fire. Binary logistic regressions showed that extraversion, as one of the Big Five personalities, significantly predicted better performance in both metaverse-based (odd ratio = 1.12, p < .05) and live-bullet (odd ratio = 1.12, p < .05) zeroing-fire. However, no other types of personality or self-efficacy were associated with marksmanship performance. Additionally, individuals who successfully performed zeroing-fire using the metaverse-based simulator were more likely to succeed in live ammunition zeroing-fire, after controlling for the effect of extraversion (odd ratio = 2.05, p < .05). These results show that extraversion can boost rifle shooting performance. In addition, simulation shooting system using six-degrees of freedom trajectories can be effective to improve marksmanship and high-angle firearms such as a mortar.

육군 장병의 스마트폰 과의존이 주관적 웰빙에 미치는 영향

이현엽(Lee, Hyunyup),현승주(Hyun, Seungju),황원준(Hwang, Wonjune),고재원(Ko, Jaewon) 대구과학대학교 국방안보연구소 2021 사회융합연구 Vol.5 No.6

군대에서 2020년부터 병사들의 스마트폰 사용이 허용됨에 따라, 군인들의 스마트폰 과의존과 정신건강과의 관련성을 검증하는 연구의 필요성이 제기되었다. 이에 본 연구는 육군 장병(병사 5,142명, 간부 1,429명)을대상으로 스마트폰 과의존, 복무 태도, 부대 소속감이 주관적 웰빙에 미치는 영향을 검증하였다. 상관관계분석 결과, 병사와 간부 모두 스마트폰 과의존이 높을수록 긍정적인 복무 태도 및 부대 소속감은 감소했으며, 주관적 웰빙 지표에서는 부대 생활 만족도는 감소했고, 부정적 정서는 증가하였다. 회귀분석 결과, 병사집단에서는 긍정적인 복무 태도와 부대 소속감이 주관적 웰빙에 고유한 영향력을 나타냈고, 스마트폰 과의존은 독립적인 영향력을 나타내지 않았다. 간부집단에서도 스마트폰 과의존은 부대 생활 만족도와 긍정적정서에 고유한 영향력을 나타내지 않았으며, 긍정적인 복무 태도와 부대 소속감이 주요한 예측변수로 나타났다. 그러나, 부정적 정서에 있어서는 스마트폰 과의존, 긍정적인 복무 태도, 부대 소속감 모두 고유한 영향력을 나타냈다. 이와 같은 결과는 스마트폰 과의존이 주관적 웰빙에 부정적인 관련성을 나타내지만, 긍정적인 심리적 자원이 존재할 경우 스마트폰 과의존의 부정적 영향은 감소함을 보여준다. 따라서 군대 내에서는스마트폰의 과의존을 줄일 수 있도록 하면서, 동시에 다른 긍정적 대처 자원(긍정적 복무 태도, 소속감, 응집성 등)을 향상시키려는 노력을 병행해야 한다. 추가로, 연구의 의의 및 한계점이 논의되었다. Given that soldiers were allowed to use smartphone in the military as of 2020, it is necessary to examine the association of smartphone overdependence with mental health among soldiers. Thus, the current study aimed to examine the effects of smartphone overdependence, attitude to military service, and unit cohesion on subjective well-being among the Republic of Korea Army soldiers (Enlisted 5,142, Officers and Non-Commissioned Officers 1,429). Correlation analysis showed that soldiers with higher levels of smartphone overdependence reported lower levels of positive attitude to military service, unit cohesion, and life satisfaction, but higher levels of negative emotion. Hierarchical regressions showed that positive attitude to military service and unit cohesion had independent effects on subjective well-being, while smartphone overdependence did not have a unique impact among the Enlisted group. Similarly, positive attitude to military service and unit cohesion were independently associated with subjective well-being, but smartphone overdependence was found to be a non-significant predictor among the Officers and Non-Commissioned Officers group. However, smartphone overdependence had the unique impact on negative emotion, even after controlling the effect of positive attitude to military service and unit cohesion. These results indicate that smartphone overdependence is negatively associated with subjective well-being, but its impact can decrease in the presence of positive resources such as positive attitude to military service and unit cohesion. Thus, efforts to increase the positive resources are needed in parallel with efforts to reduce overuse of smartphone in the military. Implications and limitations were additionally discussed.

레일의 상하방향 불규칙성에 의한 차륜과 레일의 동 접촉력

이현엽(H. Y. Lee) 한국소음진동공학회 1998 소음 진동 Vol.8 No.4

전투 시 살상 경험이 노년기의 정신건강과 주관적 신체건강에 미치는 영향: 베트남전 참전 제대군인을 중심으로

이현엽(Hyunyup Lee),강성록(Sungrok Kang) 대한스트레스학회 2022 스트레스硏究 Vol.30 No.2

본 연구는 베트남전에 참전했던 제대군인들로부터 수집한 자료를 활용하여 살상 경험과 전투노출 경험이 노년기 정신건강과 주관적 신체건강에 미치는 영향을 검증하였다. 살상 경험 유무와 전투노출 경험 유무에 따라 무경험 집단, 전투노출 집단, 살상 및 전투노출 집단으로 구분한 뒤 외상 후 스트레스 장애 증상, 불안 증상, 적대감, 주관적 신체건강에 있어 차이를 나타내는지 검증한 결과, 살상 및 전투노출 집단이 가장 높은 수준의 외상 후 스트레스 증상, 불안 증상, 적대감을 보였으며, 주관적 신체건강은 무경험 집단에서 가장 높은 수준을 나타냈다. 해당 결과는 전투지역에 파병되어 임무를 수행한 군인들의 심리적․신체적 회복을 위한 개입 시 전투노출 외상뿐만 아니라 살상 경험을 함께 고려해야 함을 시사한다. Background: The current study aimed to examine the effects of combat exposure and killing on mental and subjective physical health later in life among Korean Vietnam War veterans. Methods: The data were collected from 342 male veterans with a mean age of 72 years (SD=2.57). Veterans were divided based on their histories into three groups: no experience (Group 1), combat exposure only (Group 2), and both killing and combat exposure (Group 3). Analyses of variance (ANOVAs) examined group differences in post-traumatic stress disorder (PTSD) symptoms, anxiety symptoms, hostility, and perceived physical health. Results: The ANOVAs showed that PTSD, anxiety symptoms and hostility were most prevalent among the veterans in Group 3 (both killing and combat exposure). No significant differences were found between Groups 1 and 2. Perceived physical health was highest among the veterans in Group 1 (no experience). There were no differences between Groups 2 and 3. Even after controlling for the impacts of optimism and social support after homecoming, these results were similar. Conclusions: The findings indicate that killing experience and combat exposure should be considered in designing interventions for veterans deployed into active combat zones.

석유시추공에서의 저주파음향의 전달에 관한 연구

이현엽(H. Y. Lee) 대한조선학회 1995 大韓造船學會 論文集 Vol.32 No.2

함정용 고무마운트의 진동에 대한 실험적 연구

이현엽(Hyun Yup Lee),신수용(Su-Yong Shin),정정훈(Jung Hoon Chung),곽정석(Jeong-Seok Kwak),류재문(Jae-Moon Lew) 대한조선학회 2009 大韓造船學會 論文集 Vol.46 No.2

관절 통증에 대한 외기 방사 기공 요법의 체계적 문헌고찰

이현엽 ( Hyeon Yeop Lee ),황만석 ( Man Suk Hwang ),허인 ( In Heo ),신병철 ( Byung Cheul Shin ),허광호 ( Kwang Ho Heo ),황의형 ( Eui Hyoung Hwang ) 한방재활의학과학회 2014 한방재활의학과학회지 Vol.24 No.4

ObjectivesThe aim of this study is to analyze the therapeutic effect of external Qigong therapy for treatment of other people`s disease on joint pain.MethodsWe searched articles from Pubmed, Chinese Academic Journals (CAJ) and Oasis online databases. Searching keywords were ‘external qigong’, ‘external qi gong’, ‘qi therapy’, ‘外?’, ‘??’ and ‘기공’. After searching the articles, we performed quality assess-ment using Cochrane risk of bias (RoB) tool and risk of bias assessment tool for non-randomized study (RoBANS).ResultsAmong the 117 articles were searched, 2 randomized controlled clinical trials (RCTs) and 2 single-group before and after studies were finally selected. All of 4 studies showed that external Qigong therapy has significant effect on joint pain.ConclusionsAlthough external Qigong therapy has therapeutic effect on joint pain, it is not common therapy yet. However, external Qigong therapy requires more interests and studies in the future, because it is faithful therapy for Korean medicine theory. (J Korean Med Rehab 2014;24(4):187-193)

한방재활의학과학회지에 수록된 무작위대조임상연구의 양적, 질적 분석(1)

이현엽 ( Hyeon Yeop Lee ),허광호 ( Kwang Ho Heo ),조현우 ( Hyun Woo Cho ),황의형 ( Eui Hyoung Hwang ),신미숙 ( Mi Suk Shin ),신병철 ( Byung Cheul Shin ) 한방재활의학과학회 2013 한방재활의학과학회지 Vol.23 No.1

Objectives:The aim of this study is to assess the quantity and quality of randomized controlled clinical trials(RCTs) published in the journal of oriental rehabilitation medicine(JORM).Methods:After searching RCTs from all the articles published in the JORM from the inception(1991) to Oct, 2012, quantity assessment were made on the study design, sample size, main intervention, intervention versus control design and medical condition.Quality assessment were made on the cochrane risk of bias(RoB) check list.Assessment was performed by 2 independent reviewers and disagreement was discussed based on concensus of all authors.Results:Among the 1013 articles, total 59 RCTs were published.First RCT was published in 1994.49 RCTs were parallel 2-arm designed.Average sample size was 35.1 per study and 16.3 per arm.The most common medical condition is musculoskeletal disease(30.5%).Quality from cochrane RoB was generally low.Conclusions:Though RCTs published in JORM were increasing, the quality remains low.Researchers should make a effort to follow the RoB checklists and improve the quantity and quality of studies.

초대형 부유식 해상공항의 파도에 의한 진동응답특성 해석

이현엽(Hyun-Yup Lee),전영기(Young-Ki Jeon),신현경(Hyun-Kyung Shin) 한국해양공학회 1996 韓國海洋工學會誌 Vol.10 No.4

The vibration due to progressive ocean waves is analyzed for a typical footing-type offshore airport platform. The platform is modelled as a spring-supported Euler beam and buoyancy change due to wave is considered as excitation force, under the assumption that the wave propagates without distortion by the structure. The results show that the natural frequencies of this structure are distributed very closely and are little affected by boundary conditions and that the response charateristics due to ocean waves are quite different according to the wave frequency. In this study, the wave frequencies are divided into three regions; the resonance region at which the response is governed by the resonance between the natural mode at the wave frequency and the corresponding modal component of the wave excitation force, the bending governed region at which the response is governed by the bending stiffness, and the spring(buoyancy) governed region at which the response is governed by the spring constant and therefore is same as the incident wave form.

[Original] An Experimental and Theoretical Evaluation of the Axial Vibration Properties of a Typical Drillstring

Lee, Hyun Yup(이현엽) 한국소음진동공학회 1995 소음 진동 Vol.5 No.1