• 한국융합학회논문지
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• 제10권6호
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• pp.317-324
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• 2019

본 연구의 목적은 씨름선수를 대상으로 최대운동 후 회복기 스포츠마사지 처치 유 무와 회복시기가 심박수, 산소섭취량 및 혈중젖산 변화에 미치는 영향을 검증하는데 있다. 대학팀과 실업팀에 소속중인 씨름선수 24명을 대상으로 1차 실험에서는 최대운동 후 정적회복기를 20분 가졌으며, 2차 실험에서는 회복기 20분간 복와위 자세로 배부, 요부, 하지 순으로 스포츠마사지를 처치하였다. 연구결과, 스포츠마사지 실시 유 무와 회복시기에 따른 상호작용효과는 심박수에서 대학팀과 실업팀 모두 회복기 10분 이후부터 스포츠마사지를 처치하였을 때가 처지 하지 않았을 때 보다 더 높은 회복능력을 보였다. 회복시기에 따른 주효과는 심박수, 산소섭취량, 혈중젖산의 모든 변인에서 나타났다. 스포츠마사지 처치 유무에 따른 혈중젖산의 주효과는 대학팀과 실업팀 모두 스포츠마사지를 처치하였을 때가 유의미하게 낮았고, 산소섭취량의 주효과는 실업팀에서만 유의하게 낮았다. 결론적으로 씨름선수 대상의 최대운동 후 스포츠 마사지 처치는 정적인 회복방법에 비하여 심박수와 산소섭취량, 혈중젖산 회복기전에 긍정적인 영향을 미치고 있음을 확인하였다.

• 한국융합학회논문지
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• 제10권3호
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• pp.67-72
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• 2019

본 연구는 일주일 동안의 컴퓨터 사용시간이 몸통 근육 두께와 압력 통증 역치에 미치는 영향을 분석하였다. 33명의 대상자를 일주일에 컴퓨터를 10시간 이하(A 그룹), 10시간에서 20시간(B 그룹), 20시간 이상 사용하는 그룹(C 그룹)으로 나누어 위 등세모근, 작은가슴근, 앞 목갈비근, 중간 목갈비근의 근 두께와 위 등세모근, 작은가슴근, 앞 목갈비근, 중간 목갈비근, 어깨올림근의 압력 통증 역치를 측정하였다. 본 연구의 결과 C 그룹의 작은가슴근, 앞 목갈비근, 중간 목갈비근은 다른 그룹들의 근 두께에 비해 유의하게 증가되었고(p<.05) 위 등세모근, 앞 목갈비근, 작은가슴근, 어깨올림근의 압력통증역치는 다른 그룹들에 비해 유의하게 감소하였다(p<.05). 그러므로, 본 연구는 1주일 동안 컴퓨터를 장시간 사용하는 사람들은 장시간 컴퓨터 사용이 다양한 근골격계 질환의 원인이 될 수 있음을 인지하고 그에 따른 적절한 예방적 접근을 수행할 것을 권장한다.

• 한국전문물리치료학회지
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• 제29권2호
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• pp.117-123
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• 2022

Background: Push-up are effective exercises for shoulder stability. Previous studies have documented the effects of support plane and hand position and width on muscle activities during a push-up. Objects: This study aimed to investigate the changes in muscle activities in the upper extremity when performing the standard and the knee-flexed push-up with different hand shapes. Methods: A total of twenty-six healthy males participated in this study. Three different hand shapes (finger abduction, finger adduction, and fists) and two types of push-up posture (standard and knee-flexed push-up) were set as the independent variables. Electrograms were used to measure the muscle activity of the upper trapezius (UT), triceps brachii (TB), pectoralis major (PM), and serratus anterior (SA). Each participant performed the randomly assigned push-up to the sound of the metronome. The mixed-effect linear regression model was used to detect the changes in muscle activities after changing the hand shape and push-up posture. Statistical significance was set at α = 0.05. Results: The UT muscle activity was statistically significantly higher when performing push-up with fists than finger abduction (p = 0.035) or finger adduction (p = 0.044). During the standard push-up, the muscle activity in all muscles was that the push-up with fists showed the highest muscle activity compared to the finger abduction (p < 0.01) and finger adduction (p < 0.01). Regardless of the shape of the hand, UT had the lowest muscle activity compared to other muscles (p < 0.001). In contrast, the SA muscle had the highest muscle activity among four muscles during the standard push-up. Conclusion: Based on the results of this study, we suggest hand shape is related to the difficulty level of push-up either in the standard or the knee-flexed push-up, especially in the push-up with fists. In addition, knee push-up can be recommended as shoulder muscle-strengthening exercises for individuals with low shoulder muscle strength.

• Coupled systems mechanics
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• 제5권2호
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• pp.145-156
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• 2016

An efficient and general numerical strategy for fluid-structure interaction problems is presented where either the fluid or the structure part are represented by nonlinear models. This partitioned strategy is implemented under the form of code coupling that allows to (re)-use previous made developments in a more general multi-physics context. This strategy and its numerical implementation is verified on classical fluid-structure interaction benchmarks, and then applied to the impact of tsunamis waves on submerged structures.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.288-288
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• 2000

Reactor vessel is one of the most important equipment with regard to the safety of nuclear power plant. Thus nuclear regulation requires its periodical examination by certified inspection experts. Conventional reactor inspection machines are obsolete, hard to handle, and very expensive. To solve these problems we developed robotic reactor vessel inspection system which are small, easy to use for inspection, cost effective, and convenient in operation. This paper describes the main features of Main Control System which is one part of robotic inspection equipment we developed.

• Journal of applied mathematics & informatics
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• 제23권1_2호
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• pp.571-579
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• 2007

Finite difference schemes are considered for a generalization of the Cahn-Hilliard equation with Neumann boundary conditions and the Kuramoto-Sivashinsky equation with a periodic boundary condition, which is of the type $ut+\frac{{\partial}^2} {{\partial}x^2}\;g\;(u,\;u_x,\;u_{xx})=f(u,\;u_x,\;u_{xx})$. Stability and $L^{\infty}$ error estimates of approximate solutions for the corresponding schemes are obtained using the extended Lax-Richtmyer equivalence theorem.

• 비파괴검사학회지
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• 제10권1호
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• pp.65-72
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• 1990

Comparison of acoustic emission, ultrasonic testing and crack gauge in 3-point bending testing have been studied. As the results, COD is indirectly assumed by strain gauge rate and grid pitch width when crack gauge grid is out. Acoustic emission is qualitatively able to measure crack growth by total count but ultrasonic testing has a difficulty in measuring it because of echo height fluctuation according to the change and pressure of UT. probe.

• 한국전문물리치료학회지
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• 제20권2호
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• pp.28-37
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• 2013

This study examined differences in the activity of upper limb muscles according to how an ultrasound head is gripped. Twenty-two adult males were participated in the study. Each participant was asked to apply ultrasound treatment on to a lump of pork meat by two different ultrasound head grip patterns: spherical and cylindrical grips. Muscle activity was measured in the extensor carpi radialis longus (ECRL), flexor carpi ulnaris (FCU), and pronator teres (PT), triceps brachii (TB), middle deltoid (MD), and upper trapezius (UT) muscles. There were no significant differences in the EMG signals of any muscle according to the ultrasound head grip pattern (p>.05). There were significant differences in the EMG signal of each type of muscle (p<.05). The EMG signal of UT was the lowest and that of TB was lower than ECRL and FCU. There were interactions between ECRL and FCU, between ECRL and PT, between FCU and ECRL, and between FCU and MD. The EMG signal of ECRL using the cylindrical head was low and that of FCU with the cylindrical head was high, while the opposite was the case with the spherical head ($p_{adj}$ <.05/15). The results of this study indicate that the wrist muscles worked actively when the participants applied ultrasound therapy using both spherical and cylindrical heads. A spherical head might induce imbalanced muscle activity among the wrist muscles, leading to deviation of the wrist joint. Therefore, the cylindrical head is recommended for ultrasound therapy because it produced a constant, repeated force.

• 한국임상약학회지
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• 제25권2호
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• pp.68-73
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• 2015

With the changes in the pharmacy curriculum from a 4 year program to a 6 year program in 2009, a new subject called Pharmacy Practice Experience (PPE) has been launched into the curriculum. The purpose of introducing this subject is to increase the competency of new pharmacy graduates in providing quality healthcare to the community. This study has been done, via comparison among different pharmacy schools in Canada and Korea, to ensure that the competency of future Korean pharmacists can be increased with the introduction of this subject. In general, the Introductory Pharmacy Practice Experience (IPPE) in Korea consists of 60 hours while Canada consists of 320 hours (minimum). Furthermore, the Advanced Pharmacy Practice Experience (APPE) required in Korea is 1340 hours while Canada requires minimum of 960 hours. Specifically, comparing the Korean PPE curriculum to the PPE curriculums of University of Toronto (UT) and University of Waterloo (UW), UT and UW required a minimum of 75% and 89% direct clinical patient care experience respectively, either in hospital or community setting, compared to 45% in Korea; the remaining percentage in any of the universities can be fulfilled by taking other electives that may not require direct patient care experience. Observing these differences, it seems clear that the current PPE experience in Canada takes more of a patient focused approach than in Korea. Thus, with the recent movement in the Korean pharmacy community towards a more patient focused approach rather than a product focused approach, it would be beneficial to learn the differences between the PPE curriculums in Korea and Canada and apply any new understandings to the relatively newly introduced PPE program in Korea to further enhance the value of the new curriculum in helping to deliver quality patient care.

• 디지털융복합연구
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• 제10권1호
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• pp.399-405
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• 2012

본 연구의 목적은 지지 면이 다른 조건(안정, 상지 불안정, 하지 불안정, 상하지 불안정)에서의 푸시업 플러스운동이 어깨 안정근의 근 활성도에 미치는 영향을 비교 하는 것이다. 본 연구에서는 18명의 정상인이 자발적인 참여를 했다. 측정 방법은 지지 면이 다른 조건에서 푸시압 플러스를 수행 하는 동안 위세모근, 큰가슴근, 앞톱니근을 표면 근전도로 기록 하였다. 연구 대상자에게는 총 7일 동안 측정을 실시하였다. 결과 값은 푸쉬업 플러스를 실시한 실효치 값의 평균으로 제시하였다. 분석 방법은 반복 측정된 일원배치 분산분석을 이용하였다. 그 결과 위세모근과, 큰가슴근은 다른 조건의 지지 면과의 비교에서는 유의한 차이가 나타나지 않았다(p>.05). 하지만 앞톱니근에서는 상하지가 불안정한 조건일 때 푸쉬업 플러스 운동을 하는 동안 근 활성도가 가장 많이 향상되었다(p<.05). 따라서 본 연구에서는 어깨의 안정성을 향상시키기 위한 푸쉬업 플러스 운동 방법으로는 상 하지가 모두 불안정한 지지 면을 제공 할 때 가장 효과적 이였다.