• 국제물리치료학회지
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• 제11권4호
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• pp.2173-2177
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• 2020

Background: Shoulder horizontal abduction in the prone position (SHAP) has been reported as an effective exercise to strengthen the lower trapezius. However, the effects of pre-emptive scapular posterior tilt on scapular muscle activity and scapulohumeral movements during SHAP have not been examined. Objectives: To examine the effect of the addition of scapular posterior tilt on muscle activity of the trapezius and posterior deltoid, and scapular posterior tilt and shoulder horizontal abduction, during SHAP. Design: Cross-sectional study. Methods: Fifteen healthy male subjects performed two types of SHAP: general and modified SHAP (SHAP combined with pre-emptive scapular posterior tilt). To perform modified SHAP, pre-emptive scapular posterior tilt training was performed prior to the modified SHAP. Muscle activity of the middle and lower trapezius and posterior deltoid, and the amount of scapular posterior tilt and shoulder horizontal abduction, were measured during two types of SHAP. Results: Muscle activity of the lower trapezius and scapular posterior tilt was significantly increased during the modified SHAP, while muscle activity of the posterior deltoid and the amount of shoulder horizontal abduction were significantly decreased. However, the middle trapezius muscle activity did not change during the modified SHAP. Conclusion: The SHAP with pre-emptive scapular posterior tilt can be useful to strengthen the lower trapezius.

• 한국멀티미디어학회논문지
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• 제24권11호
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• pp.1567-1579
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• 2021

This study describes a multicultural literacy program that can nurture multicultural people who can live in a multicultural society. A total of 10 20-hour programs were conducted for 22 youths in Busan. Through this, the current perception and acceptance of multiculturalism among young people in Busan was investigated, and a curriculum suitable for multicultural awareness, multicultural acceptance, and multicultural competency enhancement was constructed. In accordance with the goal of strengthening the multicultural competency required for multicultural activists through education, learners can exchange opinions through the activity sheet, so that learners can know the difference between themselves and others. Students could learn about each other's culture and values through cultural exchange with others, and through teachers with diverse cultures, they could learn various perspectives and cultures about culture and values. Through the results of the multicultural literacy program, I would like to suggest three methods of multicultural literacy education to strengthen multicultural competence in a multicultural society. Therefore, efforts should be made to develop various multicultural education courses to strengthen the multicultural capabilities of Koreans.

• 융합보안논문지
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• 제23권1호
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• pp.63-68
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• 2023

본 연구에서는 블록체인 프로토콜과 네트워크 보안에 관련해서 MITM공격 및 DoS/DDoS 공격 등에 강한 대응수준을 갖출 수 있도록 블록체인 구성과 스마트 컨트랙트 상의 암호화 키 관리 방안과 에 대해 연구한다. 암호화 통신 프로토콜과 인증강화를 통한 중간자 공격(MITM)등의 데이터보안 위협에 대응, 노드간의 로드밸런싱과 분산화 된 방식으로 DDoS 공격 대응, 안전한 코딩과 취약점 검사, 안전한 합의알고리즘에 의한 스마트 컨트랙트 보안 강화, 사용자 인증과 권한 부여 강화를 통한 액세스 제어 및 인증, 블록체인 코어 및 노드의 보안성 강화, 기타 블록체인 프로토콜 업데이트 및 보안 강화를 위한 모니터링 시스템 구축 등을 통해 보안성이 강화된 블록체인 기술을 활용할 수 있을 것으로 기대된다.

• Structural Engineering and Mechanics
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• 제49권4호
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• pp.523-536
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• 2014

Before incorporating the earthquake-resistance design in design standard (1988) in South Korea, most of existing residential buildings were built without having lateral resistance capacity in addition to their structural peculiarity, such as exterior stair ways, exterior elevator room. For these reasons, the demands on retrofitting research for existing buildings arise recently and many retrofitting methods are proposed. These tasks are important to reduce the enormous economic loss and environmental issues. As the main purpose, this study was intended to examine the performance improvement in terms of ductility and strength in the wake of retrofitting and to suggest retrofitting details.

• 한국전문물리치료학회지
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• 제24권1호
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• pp.9-18
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• 2017

Background: Short foot exercise (SFex) is often prescribed and performed in the sport and rehabilitation fields to strengthen intrinsic foot muscles. However, SFex is difficult to perform because of lack of feedback methods. Objects: The aim of this study was to compare the effects of SFex with and without electromyography (EMG) biofeedback on the medial longitudinal arch (MLA) of healthy individuals who maintained a static standing position. Methods: All participants (14 males and 12 females) were randomly divided into two groups (biofeedback and non-biofeedback groups). The EMG activity of the abductor hallucis (AbdH) and tibialis anterior (TA) and the MLA angle on the dominant leg side were measured with the participant in the standing position in the pre- and post-intervention conditions. The intervention session consisted of 15 minutes of SFex with (biofeedback group) or without (non-biofeedback group) EMG biofeedback. The groups were compared using two-way repeated measures analysis of variance. Results: The post-intervention activities of the AbdH muscle (p<.05) and the AbdH/TA ratio (p<.05) were significantly greater in the biofeedback group than in the non-biofeedback group. The activity of the TA (p<.05) and the MLA angle (p<.05) in the biofeedback group were significantly lower in the post-intervention condition than in the pre-intervention condition. Conclusion: The present findings demonstrate that the combination of SFex and EMG biofeedback can effectively facilitate the muscle activity of the AbdH and strengthen the medial longitudinal arch.

• 한국콘텐츠학회논문지
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• 제21권7호
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• pp.459-468
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• 2021

본 연구는 역량에 대한 영어교육과 학생들의 인식과 요구를 알아보고 분석하여 좀 더 효과적으로 영어교육관련 교과역량과 핵심역량강화를 할 수 있는 기초자료를 제공하는 것을 목적으로 한다. 이를 위하여, 핵심역량에 대한 영어교육과 학생들의 인식과 요구를 알아보고 분석하였으며, 이 결과와 Education 2030 프로젝트, 2015 개정 영어과 교육과정을 바탕으로 영어교육과의 핵심역량 중심 교육방법을 연구하였다. 주요 결과를 보면, 영어교육과 학생들은 본인의 역량에 대한 관심이 많으나 어떠한 역량을 강화해야하는지 또는 전공과 연계하여 어떻게 강화해야 할지는 모르겠다는 학생들이 많았다. 또한 학생들은 핵심역량 중심의 전공 커리큘럼을 통한, 전공과 연계된 핵심역량 강화에 대한 요구가 높았다. 본 연구에서는 이러한 결과를 바탕으로 대학의 국가적 요구를 반영한 영어교육전공의 커리큘럼 개발 방향과 커리큘럼, 교수법, 평가 방법을 유기적으로 연계하여 필요한 역량을 보다 효과적으로 배양 할 수 있는 방안을 제언하였다.

• Journal of Preventive Medicine and Public Health
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• 제40권6호
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• pp.495-504
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• 2007

Objectives : This study attempts to show how studies using non-experimental data can strengthen causal inferences by applying propensity score and instrumental variable methods based on the counterfactual framework. For illustrative purposes, we examine the effect of having private health insurance on the probability of experiencing at least one hospital admission in the previous year. Methods : Using data from the 4th wave of the Korea Labor and Income Panel Study, we compared the results obtained using propensity score and instrumental variable methods with those from conventional logistic and linear regression models, respectively. Results : While conventional multiple regression analyses fail to identify the effect, the results estimated using propensity score and instrumental variable methods suggest that having private health insurance has positive and statistically significant effects on hospital admission. Conclusions : This study demonstrates that propensity score and instrumental variable methods provide potentially useful alternatives to conventional regression approaches in making causal inferences using non-experimental data.

• 한국전문물리치료학회지
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• 제25권1호
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• pp.22-30
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• 2018

Background: Improvement of lumbo-pelvic stability can reduce the compensatory action of the quadratus lumborum (QL) and selectively strengthen the gluteus medius (GM) during side-lying hip abduction (SHA). There are abdominal draw-in maneuver (ADIM) and abdominal bracing (AB) as active ways, and pelvic compression belt (PCB) as a passive way to increase of lumbo-pelvic stability. It is necessary to compare how these stabilization methods affect the selective strengthening of the GM. Objects: To investigate the effects of ADIM, AB, and PCB during SHA on the electromyography (EMG) activity of the GM, QL, external oblique (EO) and internal oblique (IO), and the GM/QL EMG activity ratio. Methods: A total of 20 healthy male adults participated in the study. The subjects performed three conditions in side-lying in random order: SHA with ADIM (SHA-ADIM), SHA with AB (SHA-AB), and SHA with PCB (SHA-PCB). To compare the differences among the three conditions, the EMG activities of the GM, QL, EO and IO, and GM/QL EMG activity ratio were analyzed using one-way repeated ANOVA. Results: The EMG activity of the QL was significantly higher in SHA-AB than in SHA-ADIM and SHA-PCB. The GM/QL activity ratio was significantly higher in SHA-PCB than in SHA-ADIM and SHA-AB. In addition, the figure for SHA-ADIM was significantly higher than that for SHA-AB. In the case of the EO, the figure for SHA-AB was significantly higher than corresponding values for the other two conditions. The figure for SHA-ADIM was significantly higher than that for SHA-PCB. The EMG activity of the IO was significantly higher in SHA-AH than in SHA-PCB. Conclusion: It can be suggested that wearing the PCB can more selectively strengthen the GM than to perform ADIM and AB during SHA. In addition, the ADIM can be recommended when there is a need to strengthen abdominal muscles during SHA.

• 산업융합연구
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• 제20권5호
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• pp.83-92
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• 2022

인공지능 기술로 인한 사회·윤리적 문제 사례가 발생하면서 인공지능의 위험과 부작용에 대한 사회적 관심과 함께 인공지능 윤리가 주목받고 있다. 인공지능 윤리는 알고, 느끼는 것에 그치는 것이 아니라 행동과 실천으로 이루어져야 한다. 이에 본 논문은 인공지능 윤리의 실천력을 강화하기 위한 인공지능 윤리 교육 모델을 제안하고자 한다. 인공지능 윤리교육 모델은 선행 연구 분석을 통해 교육목표와 인공지능을 이용한 문제해결 프로세스를 도출하고, 실천력 강화를 위한 교수학습방법을 적용하였으며 기존에 제안된 인공지능 교육 모델과 비교 분석하여 그 차이를 도출하였다. 본 논문에서 제안하는 인공지능 윤리 교육 모델은 컴퓨팅 사고력 함양과 인공지능 윤리의 실천력 강화를 목표로 한다. 이를 위해 인공지능을 이용한 문제해결 프로세스를 6단계로 제안하고, 인공지능 특성을 반영한 인공지능 윤리요소를 도출하여 문제해결 프로세스에 적용하였다. 또한, 인공지능 윤리 의식에 대한 사전·사후 평가와 과정 평가를 통해 인공지능 윤리 기준을 무의식적으로 확인하게 하고, 학습자 중심의 교수학습방법을 적용하여 학습자의 윤리 실천을 습관화하도록 설계하였다. 본 연구를 통해 개발된 인공지능 윤리 교육 모델이 컴퓨팅 사고력을 함양하고, 인공지능 윤리가 실천으로 이어지는 인공지능 교육이 될 수 있을 것으로 기대한다.

• 의학교육논단
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• 제23권2호
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• pp.90-103
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• 2021

This study examined the current status of the medical professionalism curriculum in Korea to suggest a plan to move towards the formation of a professional identity. Professionalism education data from 28 Korean medical schools were analyzed, including the number of courses, required or elective status, corresponding credits, major course contents, and teaching and evaluation methods. Considerable variation was found in the number of courses and credits in the professionalism curriculum between medical schools. The course contents were structured to expand learners' experiences, including the essence and knowledge of professionalism, understanding of oneself, social interaction with others, and the role of doctors in society and the healthcare system. The most common teaching methods were lectures and discussions, while reflective writing, coaching, feedback, and role models were used by fewer than 50% of medical schools. Written tests, assignments and reports, discussions, and presentations were frequently used as evaluation methods, but portfolio and self-evaluation rates were relatively low. White coat ceremonies were conducted in 96.2% of medical schools, and 22.2% had no code of conduct. Based on the above results, the author suggests that professional identity formation should be explicitly included in learning outcomes and educational contents, and that professional identity formation courses need to be added to each year of the program. The author also proposes the need to expand teaching methods such as reflective writing, feedback, dilemma discussion, and positive role models, to incorporate various evaluation methods such as portfolios, self-assessment, and moral reasoning, and to strengthen faculty development.