• 재활복지공학회논문지
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• 제11권4호
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• pp.323-330
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• 2017

무릎 슬리브는 재활뿐만 아니라 스포츠 활동 시 손상 예방의 목적으로도 사용되고 있다. 무릎 슬리브의 스포츠 손상 예방을 정의하기 위해서는 고유수용성감각으로부터 기인하는 균형을 평가하는 것이 중요한 요소이다. 본 연구의 목적은 골지 건 기관 자극 패드 무릎 슬리브의 효과를 분석하는 것이다. 5명의 건강한 성인 남성이 본 연구의 실험대상자로 참여하였다. 실험대상자들은 일반 무릎 슬리브와 자극 패드 슬리브를 착용한 상태에서 각각 BIODEX에서 설정된 타겟(Target) 각도를 재연하였고, 한 발 서기 동작을 수행하였다. 각도 재연성 평가의 결과를 보면, 5명의 실험대상자 중 4명의 실험대상자는 무릎 슬리브를 착용했을 때 보다 자극 패드 슬리브 착용 시 %Target angle이 증가하는 결과를 보였다. 한 발 서기 동작 수행 시 무릎 슬리브 착용 시 보다 자극 패드 슬리브 착용 시 유지 시간(duration time)이 증가했으며 x, y 방향에서 COP 길이가 모두 감소했다(COPx - 무릎 슬리브: $162.06{\pm}58.99mm$, 자극 패드 무릎 슬리브: $149.03{\pm}45.30mm$; COPy - 무릎 슬리브: $310.79{\pm}115.89mm$, 자극 패드 무릎 슬리브: $291.57{\pm}76.53mm$). 초기 전이구간, 정적 구간, 말기 전이구간이 차지하는 비율은 무릎 슬리브 착용 시와 자극 패드 무릎 슬리브 착용 시에 유의한 차이를 보였다 (all, p < 0.05). 본 연구의 결과로부터 골지 건 기관 자극 패드 무릎 슬리브 착용이 고유수용성 감각과 균형에 긍정적인 영향을 미치는 것을 확인할 수 있었다.

• 대한통합의학회지
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• 제8권3호
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• pp.143-151
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• 2020

Purpose: This study aimed to investigate the effect of single-leg stance training according to different support surfaces on walking speed and balance in patients with chronic hemiplegia. Methods: Twenty-two patients with chronic stroke were randomly categorized into an experimental group (11 patients) and a control group (11 patients). In the experimental group, single-leg stance training was performed on an unstable surface after 50 min of general physical therapy. In the control group, single-leg stance training was performed on a stable surface after 50 min of general physical therapy. All participants performed five sets of single-leg stance exercises per minute and rested for 3 min. The intervention was performed 5 times a week for 4 weeks, and each patient was evaluated using the Berg Balance Scale (BBS), Fugl-Meyer Assessment Scale (FMA), and difference in walking speed between the first and last day of the intervention. Results: Compared to baseline measurements, both study groups showed significant increases in FMA, BBS, and walking speed (p<.05) after the intervention. However, there was no statistically significant difference (p>.05) between the experimental and control groups. However, in the experimental group, the increases in FMA, BBS, and walking speed were 3.36 %, 9.50 %, and 7.71 %, respectively. In the control group, the increases in FMA, BBS, and walking speed were 2.39 %, 6.65 %, and 7.64 %. Conclusion: Single-leg stance training on different support surfaces could help improve walking ability and balance in patients with chronic hemiplegia.

• The Journal of Korean Physical Therapy
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• 제27권2호
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• pp.124-127
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• 2015

Purpose: The emphasis on gait rehabilitation after stroke depends on training support through the lower limbs, balance of body mass over the changing base of support. However, muscle weakness, lack of control of lower limb, and poor balance can interfere with training after stroke. For this case study report, a wearable robot orthosis was applied to stroke patients in order to verify its actual applicability on balance and gait ability in the clinical field. Methods: Two stroke patients participated in the training using the wearable robot orthosis. Wearable robot orthosis provides patient-initiated active assistance contraction during training. Training includes weight shift training, standing up and sitting down, ground walking, and stair up and down Training was applied a total of 20 times, five times a week for 4 weeks, for 30 minutes a day. Gait ability was determined by Stance phase symmetry profile, Swing phase symmetry profile, and velocity using the GAITRite system. Balance ability was measured using the Biodex balance system. Results: Subjects 1, 2 showed improved gait and balance ability with mean individual improvement of 72.4% for velocity, 19.4% for stance phase symmetry profile, 9.6% for swing phase symmetry profile, and 13.6% for balance ability. Conclusion: Training utilizing a wearable robot orthosis can be useful for improvement of the gait and balance ability of stroke patients.

• 제어로봇시스템학회논문지
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• 제17권7호
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• pp.697-703
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• 2011

This article describes a snake robot with 2-DOF actuator modules. The 2-DOF actuator modules make the snake robot move in the 3D space so that the snake robot can cross obstacles and rough terrain. Each 2-DOF actuator module is designed to have high torque output and an embedded controller. A cross bracket connecting the modules is designed be able to support the weight of two actuator modules. The developed snake robot shows 3-D motions such as side winding, standing/monitoring, and can climb in a narrow pipe with high torque modules. The snake robot moves fast with passive wheels in a plane while crossing obstacles.

• Journal of Korean Biological Nursing Science
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• 제14권2호
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• pp.94-102
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• 2012

Purpose: This study attempted to describe the essential structure of nursing students' experiences as observers of human body dissection. Methods: The research was undertaken as qualitative research. The data was collected through written sources of 169 students majoring in nursing. The analysis of data was made using the phenomenological analytic method suggested by Colaizzi (1978). Results: In this study, five categories of themes emerged. They were: 'unfamiliar wait','standing at the edge of chaos','growth through reflection', 'be immersed in practice', 'winging to be a nurse'. Conclusion: This study will prove helpful not only in understanding nursing students' observation experiences of human body dissection but also in describing their needs for systematic and emotional support.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.1275_1276
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• 2009

Micropump is very useful component in micro/nano fluidics and bioMEMS applications. Using the flexural vibration mode of PZT bar, a piezopump is successfully made. The PZT bar is polarized with thickness direction. The proposed structure for the piezo-pump consists of an input and an output port, piezoelectric ceramic actuator, actuator support, diaphragm. The traveling flexural wave along the bar is obtained by dividing two standing waves which are temporally and spatially phase shifted by 90 degrees from each other. Fluid is drawn into a forming chamber, eventually the forming chamber closes trapping the fluid therein.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 추계학술대회 논문집 학회본부 C
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• pp.935-937
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• 1998

The stringing load was added to tower design that consider the active load in 765kV transmission line construction. The nominal auxiliary members of steell tubular tower arm were altered into stress members by means of three dimensional design analysis method. 765kV transmission line construction also use self-standing tower that does not install temporary wire which support the section tower placed between drum field and engine field when stringing process.

• 한국국방경영분석학회지
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• 제17권1호
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• pp.25-42
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• 1991

Participation of ROK navy in the Rim of the Pacific(RIMPAC) in likely to stimulate rethinking of Korea's defense role in Northeast Asia. Although the RIMPAC exercise was originally maneuvers to improve combat techniques in ASW, anti-aircraft combat. ocean supply support. surface combat. and electronics warfare. it will be finally be directed to ward securing the SLOC connecting the US, Canada. Australia and the Far East. Based on this concept, my conclusion is that two future arrangements are possible for the security of the Korean peninsula and protecting the SLOC in the combined defense of the Pacific. One is the naval cooperation between ROK and Japan. the other is the Standing Naval Force Pacific(STANAVFORPAC) The concepts of the Naval Cooperation between ROK and Japan and the STANAVFORPAC is whose time has come. The leaders, policymakers, and planners of the countries concerned need to consider such a move seriously.

• The Journal of Korean Physical Therapy
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• 제16권2호
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• pp.99-107
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• 2004

The purpose of this study was to investigate the effect of foot orthotic on postural sway. Subjects were 15 patients(7 men and 8 women) who prescribed foot orthotic at B hospital and L rehabilitation medicine clinic in Seoul. Postural sway during a single limb stance was measured using the CMS 10 Measuring System when subjects positioned on the balance trainer under two treatment conditions(orthotic and nonorthotic). RCSP(resting calcaneal stance position) while subjects were standing on the glass plate was measured using the angle finder after subjects were positioned in prone to divide equally lower leg and calcaneus using the goniometer. The result was as follows. There were significant difference between postural sway of orthotic and nonorthotic conditions(t=4.888, 4.589, p<0.001), and the leg of the small RCSP within a subject has the small postural sway index($x^2=26.000$, p<0.001). In conclusion, foot orthotics provide structural support for detecting and controlling postural sway in patients prescribed foot orthotics.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집A
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• pp.523-528
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• 2000

In this paper, the new type biped walking robot which is composed of the minimum number or links just for walking and its appropriate gaits are proposed. The proposed new gaits for this robot are four-crossing, crawling, standing and turning gait. In designing the biped robot we propose the Performance Index which means the needed torque per a moving distance and generate foot trajectories by $3^{rd}$ order spline Interpolation. Among those, numerically we find the optimal conditions which minimize the Performance Index. Dynamically stable walking of the biped robot is realized by satisfying the stability condition of ZMP(zero moment point), which is related to maintaining the ZMP within the region of the supporting foot during the s1n91e leg support phase. We determine the region of mass center from the stability condition of ZMP and plan references which track the mass conte. trajectory of constant velocity. Finally we implement the gaits statically tracking the planned trajectories using PD control method.