• Therapeutic Science for Rehabilitation
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• v.10 no.1
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• pp.53-61
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• 2021

Introduction : OMFT is a therapeutic technique based on sensorimotor, motor control and motor learning, and its major goal is to improve oral motor function. The oral motor conceptual hierarchical development is divided into 5 steps: 1) sensorimotor, 2) movement integration, 3) structural movement, 4) functional oral motor, and 5) comprehensive oral motor. Discussion : The OMFT consists of 3 techniques, 10 categories, and 50 sub-item. 1) Warming up technique: 2 categories, 12 sub-item, warming up by sensory awareness and adaptation, therapy situation adaptation, neck movement; 2) Key point technique: 7 categories, 30 sub-item, oral motor facilitation and increasing chewing skill by direct stroke of oral structures such as the face, lips, cheeks, gum, jaws, and tongue; 3) Application technique: 1 category, 8 sub-item, facilitate food intake and swallowing. Conclusion : The goal of this article is to introduce 3 techniques, 50 sub-item of OMFT, as a comprehensive oral motor therapy method, for application to clients. This article provides information that will help oral motor specialists in treating clients with oral motor problems more effectively and professionally.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.16 no.1
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• pp.77-86
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• 2003

Dynamic response of baffled fuel-storage tank in turnaround motion is simulated using the ALE finite element method. Fuel-storage tank undergoes abrupt impact load caused by inertia force of internal fuel in turnaround motion. Also, large dynamic force and moment caused by this load influence structural stability and control system. In this paper, ring-type baffles are adopted to suppress the dynamic influence. Through the parametric analysis with respect to the baffle number and location, the effects of baffle on the dynamic response of baffled fuel-storage tank is analyzed. The ALE finite element method is adopted for the accurate and effective simulation of the hydrodynamic interaction between fluid and structure.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.05a
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• pp.469-471
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• 2010

Supercavitating vehicles which cruise under water undergo high longitudinal force caused by thrust and drag. These combination may cause structural buckling. Static and dynamic buckling analysis method by using FEM can be used to predict this structural failure behavior. In this paper, some principles which include method for solution eigenvalue problem for buckling analysis are introduced. And before buckling analysis, we predicted some mode shape and natural frequency of cylindrical shell by using DIAMOND/IPSAP eigen-solver.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.15 no.1
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• pp.1-8
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• 2002

When a body enters waters, its original kinetic energy or momentum is distributed among the body and surrounding water in the form of added mass. Due to the transfer of the energy or momentum, the bode is subjected to the hydrodynamic impact forces and acceleration. This impact behavior can be an important criterion of submersible vehicle launched to the air. In this paper, based on Life-boat model, an approximate method is proposed for the evaluation of the forces and responses of cylindrical rigid bode by water entry impact. The impact forces are calculated by yon Karman's momentum theory and motion responses the body, especially acceleration, are calculated by a numerical integration of the motion equations derived by hydrodynamic force equilibrium. The proposed method is expected to be a simple but efficient tool lot the preliminary design or motion analysis of a body subjected to water entry impact.

• Journal of Navigation and Port Research
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• v.45 no.4
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• pp.212-223
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• 2021

The objective of this study was to evaluate structural safety according to environmental conditions acting on the piping of offshore structure and the motion of the structure. As for conditions acting on the piping, the maximum and minimum temperature conditions were used to analyze the design conditions of N2 generator. The motion of the structure was calculated and applied according to the DNV(Det Norske Veritas) rule. Each condition was combined and a total of 26 load combinations were constructed according to thermal load, motion load, and presence or absence of pipe support. Analysis was performed using a commercial program MSC Patran/Nastran. Thermal analysis was performed by applying the steady-state method, Sol 153. Thermal-structural coupled analysis was performed using Sol 101, a linear-static method. As a result of the analysis, the stress tended to increase when temperature inside the pipe was lower in Set 1 and Set 2, when temperature was higher in Set 3, and when the temperature difference between the inside and outside of the pipe in Set 4 was increased. However, the sum of stresses in the condition with only temperature load and the condition with only the kinetic load did not show the same value as the stress in the composite load condition of two loads. That is, the influence of the motion load varied depending on the direction of motion, the arrangement of pipes, and the position of the support. Therefore, it is necessary to comprehensively consider the size and direction of the motion load acting on the piping, the arrangement of the piping, and the location of the pipe supports during the design of piping.

• Journal of the Korea Convergence Society
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• v.9 no.8
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• pp.235-246
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• 2018

The purpose of this study was to verify the structural relationship between the participation behavior, excercise behavior, sport Image and exercise Continuation of the badminton club members, The results were as follows: First, the variables that affected the sport image for the item were fun among sub-factors of participation behavior, self-esteem and stress relief among sub-factors of exercise behaviors. Second, the sport image was affecting the exercise continuation. Finally, participation and Exercise behaviors indirectly affected the exercise continuation that through sport image. The results of this study proved that sport image plays an important role as a mediator in the relationship between participation behavior, exercise behavior, and exercise continuation, and it is meaningful to provide basic data on the role of the sport image.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.3
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• pp.127-134
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• 2017

This study investigated empirically the structural relationship of golf participants' basic psychological needs, exercise emotion, and exercise-adherence behavior. Using two-hundred thirty questionnaires, the results were as follows. First, golf participants' autonomy, competence, and relatedness had a significant impact on the positive emotions. On the other hand, only competence lowered the negative emotions, and the other variables did not have a significant impact. Second, golf participants' autonomy, competence, and relatedness increased the exercise-adherence behavior. Third, golf participants' positive emotion increased the exercise-adherence behavior but a negative emotion decreased it. In terms of the indirect effect, golf participants' autonomy, competence, and relatedness influenced the exercise-adherence behavior, which was mediated by exercise emotion. This study is useful to sports participants interested in real value and a happy life through exercise-adherence behavior.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.01a
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• pp.175-178
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• 2011

본 논문에서는 인력 발전 장치를 사용하여 운동 활동을 반영하는 기능성 게임 환경을 구성하였다. 이 게임 환경은 다양한 운동을 할 수 있는 장치와 인력 발전 장치, 운동 강도 조절 장치, 운동 활동 측정 장치, 그리고 컴퓨터와 연결되는 통신 장치로 구성되어 있다. 전신 운동을 할 수 있는 다양한 운동 장치는 하체 운동을 위한 헬스 자전거와 이 자전거의 뒷부분에 두 가지 상체 운동을 할 수 있는 구조를 구성하여 부착하고, 각 힘점마다 발전기를 부착하였다. 그리고 회로 보드와 논리 프로그램을 구성하여 힘점에 부착된 발전기를 통하여 운동 강도 조절과 운동량을 측정하고, 컴퓨터와 통신을 할 수 있도록 하였다.

• The Journal of the Petrological Society of Korea
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• v.18 no.1
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• pp.19-30
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• 2009

The main fault of Yangsan Fault Zone (YFZ) and Quaternary fault were found in a trench section with NW-SE direction at an entrance of the Sinheung village in the northern Eonyang, Ulsan, Korea. We interpreted the movement history of the southern part of the YFZ from the geometric and kinematic characteristics of basement rock's fault of the YFZ (Sinheung Fault) and Quaternary fault (Quaternary Sinheung Fault) investigated at the trench section. The trench outcrop consists mainly of Cretaceous sedimentary rocks of Hayang Group and volcanic rocks of Yucheon Group which lie in fault contact and Quaternary deposits which unconformably overlie these basement rocks. This study suggests that the movement history of the southern part of the YFZ can be explained at least by two different strike-slip movements, named as D1 and D2 events, and then two different dip-slip movements, named as D3 and D4 events. (1) D1 event: a sinistral strike-slip movement which caused the bedding of sedimentary rocks to be high-angled toward the main fault of the YFZ. (2) D2 event: a dextral strike-slip movement slipped along the high-angled beddings as fault surfaces. The main characteristic structural elements are predominant sub-horizontal slickenlines and sub-vertical fault foliations which show a NNE trend. The event formed the main fault rocks of the YFZ. (3) D3 event: a conjugate reverse-slip movement slipped along fault surfaces which trend (E)NE and moderately dip (S)SE or (N)NW. The slickenlines, which plunge in the dip direction of fault surfaces, overprint the previous sub-horizontal slickenlines. The fault is characterized by S-C fabrics superimposed on the D2 fault gouges, fault surfaces showing ramp and flat geometry, asymmetric and drag folds and collapse structures accompanied with it. The event dispersed the orientation of the main fault surface of the YFZ. (4) D4 event: a Quaternary reverse-slip movement showing a displacement of several centimeters with S-C fabrics on the Quternary deposits. The D4 fault surfaces are developed along the extensions of the D3 fault surfaces of basement rocks, like the other Quaternary faults within the YFZ. This indicates that these faults were formed under the same compression of (N)NW-(S)SE direction.

• 한국지구과학회:학술대회논문집
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• 2006.02a
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• pp.227-228
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• 2006