• Journal of the Korean Applied Science and Technology
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• v.41 no.2
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• pp.413-423
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• 2024

Sixteen male college students were divided into two groups: a face-to-face group(n=8) and a real-time non-face-to-face exercise group(n=8), engaging in 30minute sessions twice a week for a duration of 8 weeks. Body composition and physical strength were measured as dependent variables before and after the home training period. For data analysis, a two-way ANOVA with repeated measures was conducted to evaluate the effects on body composition and physical strength, considering differences in exercise methods and measurement periods. Post hoc analysis using Bonferroni correction was applied. To compare the mean difference in change between groups, the pre-post difference was calculated, and an independent t-test was performed. The statistical significance level was set at p<.05. The results showed that 8 weeks of home training led to an increase in skeletal muscle mass and improvements in muscle strength, muscular endurance, and cardiorespiratory endurance in male college students, regardless of whether they participated in face-to-face or real-time non-face-to-face exercise. Moreover, there was no significant difference in exercise effectiveness between the face-to-face and real-time non-face-to-face exercise methods. Thus, these findings suggest that real-time non-face-to-face exercise can be as effective as face-to-face exercise in enhancing skeletal muscles and physical strength in male college students. Additionally, if a real-time non-face-to-face exercise program is validated for individuals with mobility issues or the elderly, it could serve as an effective alternative for those who face challenges in participating in face-to-face exercise sessions.

• Journal of the Korea Convergence Society
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• v.12 no.8
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• pp.317-325
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• 2021

By analyzing the recognition analysis and motivation method of the determinants, this study investigates the future development direction of health exercise biodata analysis face-to-face practice education content. The participants were 40 millennial and zoomers (MZ) generation college graduates. Factors related to the decision to participate in face-to-face practice classes in the field of health exercise biodata and bio-digital content convergence technology in the era of COVID-19 were measured. Of the participants, 67.5% voluntarily decided to participate in small group classes while observing social distancing rules. This study presented the most effective and learning motive methods to participate in face-to-face training. Health exercise biodata needs improvement in terms of integrating with adjacent disciplines such as big data.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.10a
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• pp.260-260
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• 2004

• Journal of Advanced Technology Convergence
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• v.3 no.1
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• pp.65-72
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• 2024

Study of the effect of interbody stabilization exercises on the static and dynamic balance of face-to-face, non-face-to-face, and self-group. We recruited healthy young adults The subjects were randomly divided into three groups to perform inter-body stabilization exercises, and static and dynamic balance were measured, respectively, before and after intervention. In the Face to Face Group, dynamic balance significantly increased in the anterior and posteriomedial directions before and after intervention. There was also a significant increase in static balance. In the Non face to face Group, there was a significant increase in the three directions of dynamic and static balance. The self-exercise group significantly increased in three directions of dynamic balance, but there was no significant difference in static balance. No significant differences between groups were found in any variables. The results of this study showed that interbody stabilization exercises are effective in improving static and dynamic balance. In the face-to-face group, the inter-body stabilization exercise was effective in improving dynamic balance and static balance, and in the non-face-to-face group, the inter-body stabilization exercise was effective in improving dynamic balance and static balance. In the self-contained group, it was effective in improving dynamic balance.

• 한국과학교육학회:학술대회논문집
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• 2009.02a
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• pp.59.1-59.1
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• 2009

• Proceedings of the Korean Vacuum Society Conference
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• 2012.02a
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• pp.95-95
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• 2012

스터퍼링 기술이 1852년 Grove에 의해서 최초 발견되어 1979년 Chapin에 의해서 planar magnetron cathode 개발로 진공코팅기술의 새로운 영역을 열게 되어 현재까지 디스플레이, 반도체, 태양전지, 광학산업 및 전자부품 등 나노 산업에 필수적으로 적용되고 있다. 스퍼터링 입자는 운동량 전달에 의한 것으로 운동량을 갖는 나노 스퍼터링 입자는 기판에 대한 박막의 부착력이 우수하고 대면적에 균일하고 재현성 있게 성막되는 특징을 갖고 있다. 마그네트론 스퍼터링 기술이 산업에 응용되면서 주로 4분야에서 많은 연구, 개발이 되어져 왔다. 첫째는 타겟의 고순도 및 고밀도화와 더불어 가격이 고가로 됨에 따라 타겟 사용효율의 향상이다. 플라즈마를 발생시키는 캐소드의 자기회로를 1차원, 2차원 및 회전운동을 통해서 사용효율을 향상시키고 있다. 둘째는 기판에 대해서 박막특성이 균일하도록 코팅하는 것이다. 디스플레이에서는 글래스 기판이 대면적으로 됨에 따라서 핸들링이 어려워져 여러 개의 캐소드 자기회로를 선형적으로 이동시켜 박막두께분포를 최적화하며 반응성 가스를 사용해서 균일한 특성의 박막을 제작하는 경우에는 가스분사관과 배기펌프계의 기하학적 위치 및 가스 유동학적 해석이 필요하다. 셋째는 스퍼터링 입자의 이온화로 의한 박막의 특성향상과 반도체 trench의 높은 aspect ratio hole을 채우는 것이다. 이온화 방법으로는 inductively coupled plasma (ICP), microwave amplified (MA), high power impulse (HIPI), hollow cathode magnetron (HCM), self-sustained sputtering 등이 사용되어져 왔으며 최근에는(neutral beam-assisted sputtering (NBAS)에 의한 박막특성향상 방법이 발표되고 있다. 넷째는 플라즈마 및 박막두께 시뮬레이션에 대해서 많은 발표가 되고 있다. 본 발표에서는 상기의 4 분야를 포함한 향후 개발방향에 대해서 소개할 예정이다.

• Journal of the Korea Convergence Society
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• v.12 no.5
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• pp.39-50
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• 2021

In this study, a meta-analysis was conducted to find out the effects of convergent "untact" exercise programs on the balance, gait, and falls efficacy of Parkinson's patients. In this study, the PICO were Parkinson's disease, virtual reality program and an e-exercise program intervention, a comparative intervention with the contact interventions applied, and without any interventions applied, outcomes were balance, gait, and fall efficacy. The survey period was between January and February 2021, and five papers were selected and subjected to meta-analysis. Risk of bias, a tool commonly used for randomized control trial studies, was used. Furthermore, RevMan program was used to investigate effect size of untact exercise programs. The result of the meta-analysis showed that the effect size of balance of the untact exercise program group was 1.27 (SMD=1.27; 95% CI 0.72 to 1.83) (Z=4.51, p<0.001), the effect size of fall efficacy was 0.52 (SMD=0.52; 95% CI -0.000 to 1.03) (Z=1.96, p=0.05), and the effect size of gait was -0.40 (SMD=-0.40; 95% CI -1.00 to 0.10)(Z=1.32, p>0.05). A total of 5 literature analysis showed that untact exercise program is more effective in improving balance and falls efficacy than contact exercise program, but no difference in effectiveness was shown on gait.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.40 no.2
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• pp.213-220
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• 2016

This research aims to develop core technologies for passive carrier (no power in carrier itself) transfer system. The technologies are passive levitation, propulsion, and guidance, which can be great benefits for semiconductor and display manufacturing industries. Passive maglev carrier is necessary to precise position control for quiet and stable transfer operation. However, the structural characteristics of carrier and the installation errors of gap sensors cause the pitch motion. Hence, the controller design in consideration of pitch motion is required. This study deals with the reduction control of carrier pitch motion. PDA controller and PDA controller with pitch control are proposed to compare the pitch angle analysis. The pitch angle and the levitation precision are measured by experiment. Finally, the optimized design of pitch controller is presented and the effects are discussed.

• KIPS Transactions on Computer and Communication Systems
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• v.10 no.6
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• pp.181-190
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• 2021

Sports activities conducted by multiple people are difficult to proceed in a situation where a widespread epidemic such as COVID-19 is spreading, and this causes a lack of physical activity in modern people. This problem can be overcome by using online exercise contents, but it is difficult to check detailed postures such as during face-to-face exercise. In this study, we present a model that detects posture and tracks movement using IT system for better non-face-to-face exercise content management. The proposed motion tracking model defines a body model with reference to motion analysis methods widely used in physical education and defines posture and movement accordingly. Using the proposed model, it is possible to recognize and analyze movements used in exercise, know the number of specific movements in the exercise program, and detect whether or not the exercise program is performed. In order to verify the validity of the proposed model, we implemented motion tracking and exercise program tracking programs using Azure Kinect DK, a markerless motion capture device. If the proposed motion tracking model is improved and the performance of the motion capture system is improved, more detailed motion analysis is possible and the number of types of motions can be increased.

• 월간낙농육우
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• v.35 no.8
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• pp.126-134
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• 2015

낙농가가 일반소비자들을 대면해 우리우유에 대해 이야기 나누고 낙농의 가치를 직접 알릴 수 있는 기회가 많아졌다. 지역마다 벌이고 있는 우유소비촉진 행사가 그렇고 소비자들이 낙농의 현장을 직접 느낄 수 있도록 목장 내 체험프로그램이나 문화행사와 같은 다양한 형태의 사업들도 운영되고 있다. 사실 어떠한 농축산업을 보아도 낙농만큼 보고 느낄만한 것이 많은 분야도 없을 것이다. 이렇게 흥미로운 소재를 갖고 있는 만큼 일반인들에게 친근하게 전해질 수 있다면 더욱 좋겠다. 안타깝게도 우리는 매일 있는 현장이니 대수롭지 않지만, 일반 소비자들에게 보기에 불편한 모습도 있을 수 있다는 것을 인지할 필요가 있다. 커다란 생명을 다루는 일이니 매일 엄청난 양의 분뇨가 퇴적되고 그래서 좋지못한 냄새가 발생되는 것은 당연하지만 아무런 책임의식없이 이를 방치를 하여 목장의 주변에 불편함을 제공해선 안된다는 것이다. 불편함이란 매우 주관 적일 수 있지만 그들의 느낌과 감정을 의식하지 않을 수 없게 되었다. 협회가 오랜기간 추진해온 깨끗한목장가꾸기운동 자체가 많은 것을 해결할 수는 없지만, 사육환경을 개선하고 주변 이웃들과 더불어 삶을 영위하고자 하는 요령과 정신을 담고 있다. 대체로 그렇듯, 매년 우수목장으로 선정된 목장주들을 보면 상당수가 늘 밝은 인상에 외지인들을 빈객 맞듯 대접하며, 좋은 것이 있으면 주변거주인들과도 나누며 원만한 관계를 유지하는 모습을 볼 수 있었다. 해도해도 끝이없는 목장일들, 수입유제품은 넘치고 우유는 남는다는데 이 모든게 농가잘못이라는 듯 몰아가는 요즘 일상의 작업들만으로도 이미 충분히 힘들고 괴로운 시기이다. 하지만 대대손손 이어가는 우리목장, 사회에 지속적으로 기여하는 낙농산업을 위해 더 넓게 그리고 자주 주변의 이웃과 소비지들의 시선을 의식하며 깨끗한목장가꾸기운동을 통해 우리 자신을 점검해볼 수 있었으면 좋겠다. 월간 낙농육우는 잘 관리된 목장환경을 기반으로 소비자들과의 교류에도 노력하며 우리낙농의 가치를 열심히 전달하고 있는 모범적인 목장을 둘러보았다.