• Archives of Plastic Surgery
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• 제36권4호
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• pp.450-457
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• 2009

Purpose: The second toe PIP joint free flap is a method of reconstruction used for abnormalities of the PIP joint of the finger. We report the results of the additional tenolysis in patients with a difference between passive ROM and active ROM after second toe PIP joint free flap. Methods: From March 2001 to July 2008, tenolysis was performed in patients with a difference in their active and passive ROM after second toe PIP joint free transfer, performed on 14 fingers. We performed a retrospective analysis of the medical records, noting the clinical and radiological findings. In addition, we measured the preoperative and postoperative range of motion of the PIP joint. Results: The average active ROM was $22.5^{\circ}$ at the three months after the joint transfer surgery, and was $38^{\circ}$ after additional tenolysis between five months and twelve months after the joint transfer. Conclusions: Additional tenolysis, after the second toe PIP joint free flap, might be a good option for improved results in patients with difference in active and passive ROM of a transferred PIP joint.

• 화약ㆍ발파
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• 제35권4호
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• pp.1-9
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• 2017

본 연구는 인공절리를 이용한 발파효과 검토를 위해 인공절리 수, 인공절리 간격, 인공절리 경사에 따른 발파속도의 영향 및 기여도를 평가 분석한 연구이다. 인공절리 상태 변화에 따른 발파속도는 동적해석 프로그램인 AUTODYN을 이용하여 획득하였다. 수치해석 결과에 대해 정규화 분석을 수행하였고, 각 인자의 기여도 분석을 위해 강건설계 실험계획법을 이용하여 설계 인자를 분석하였다. 각 인자는 3수준으로 설정하였고, 분석에 직교 배열표 $L_9(3^4)$를 사용하였다. 정규화 분석을 통해 수치해석 결과를 분석한 결과 인공절리 경사가 증가함에 따라 발파속도는 감소하는 경향을 보였다. 또한, 인공절리 간격과 인공절리 경사에 대해 발파속도를 분석한 결과 발파속도는 경사가 수직일 때 인공절리 간격이 증가함에 따라 감소는 경향을 보였다. 강건설계를 이용한 기여율 분석결과 발파속도에 가장 큰 영향을 미치는 것은 인공절리 경사이며, 이어서 인공절리 수, 인공절리 간격 순으로 기여율이 평가되었다.

• 대한물리의학회지
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• 제2권2호
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• pp.101-112
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• 2007

Purpose : The purpose of this study was to evaluate influence of sacroiliac joint mobilization on lower extremity muscle strength. Methods : The subjects were consisted of thirty patients who had Leg length inequality(LLI) of more than 10mm(16 females. 14 males) from 21 to 41 years of age(mean aged 24.87). All subjects randomly assigned to sacroiliac joint mobilization group(n=15), control group(n=15). sacroiliac joint mobilization group received sacroiliac joint mobilization about 10 minutes for 3 times per week during 4 weeks period. Control group not received intervention during 4 weeks period. The tape measure method(TMM) was used to measure functional Leg length inequality. Biodex System 3 Pro was used to measure strength of Knee extension & flexion. All measurements of each subjects were measured at pre-test, 2weeks post-test and 4weeks post-test. Results : 1. The LLI of sacroiliac joint mobilization group was significantly reduced according to within treatment period(p<.05), most significantly reduced between pre-test and post-test(p<.05). sacroiliac joint mobilization group significantly more reduced than control group(p<.05). 2. The knee extension strength of sacroiliac joint mobilization group was significantly increased according to within treatment period(p<.05), most significantly increased between pre-test and post-test(p<.05). sacroiliac joint mobilization group significantly more increased than control group(p<.05). 3. The knee flexion strength of sacroiliac joint mobilization group was significantly increased according to within treatment period(p<.05), most significantly increased between pre-test and post-test(p<.05). sacroiliac joint mobilization group significantly more increased than control group(p<.05). Conclusion : sacroiliac joint mobilization can reduce LLI and increased lower extremity muscle strength.

• 건축역사연구
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• 제16권1호
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• pp.83-99
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• 2007

This study examines the joint and splice of wooden structure at Geunjeongjeon Hall of Gyengbok Palace, which was constructed in the late Joseon Dynasty. The scope of the study is on the part of columns, the bracket sets, and the frame structure. This research also deals with the relationship between vortical load and horizontal load. Firstly, the examination of the joint and splice methods between the pillar and penetrating ties is on the joint and splice methods of the outer and corner. Through the investigation, it is verified that the joint methods between pillar and penetrating tie on the outer and corner pillars is the method of Sagal joints(cross joints, 사개맞춤). Joints used between pillar and penetrating tie are dovetailed tenon joints, between columns and Anchogong(안초공), between columns and Choikgong(초익공) are tenon joint(장부맞춤). Secondly, the examination of the joint and splice methods of the bracket set is on that of Salmi and Cheomcha(첨차), and Salmi and Janghyeo(장혀). Joints used between Salmi and Cheomcha, Salmi and Janghyeo are halved joint, and between each Janghyeo are stepped dovetailed splice. It is Cheomcha that is used the Jujang-Cheomcha(주장첨차) on center line. Therefore it is connected with each bracket set, which gets to is the strong system, easy and convenient on the construction of that. Thirdly, the frame structure of wooden architecture in royal palace is consist of purlins and beams, Janghyeo(장혀, timber under purlin), tall columns, king posts, etc. Through the investigation, it is verified that the joint and splice methods between purlins and beams are used with the methods of Sungeoteok joint(숭어턱맞춤). It is verified that the joint and splice methods between beams and high columns are used with methods of mortise and tenon joint(장부맞춤), is highly related with tensile force. To reduce the separation of parts, sangi(산지) and tishoi(띠쇠) are used as a counterproposal, which were generally used for architecture in royal Palaces in the late Joseon Dynasty and continued to be used until these days common wooden architecture.

• 한국정보통신학회논문지
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• 제22권10호
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• pp.1355-1360
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• 2018

헬스케어 산업은 빅데이타, ICT(Information and Communications Technologies), IT 기기 등의 결합으로 서비스 범위가 확대되고 관리가 생애주기 전반에 걸쳐 이뤄질 것으로 예상된다. 본 논문은 헬스케어의 한 분야로 엄지손가락에 대한 손허리손가락관절굽힘과 손가락뼈사이관절굽힘에 대하여 알아보도록 한다. 손허리손가락관절굽힘은 엄지 손허리손가락 관절을 구부리는 것을 말하고 손가락뼈사이관절굽힘은 엄지손가락뼈사이 관절을 구부리는 것을 말한다. 관절을 구부릴 때 일정한 정해진 각도에 미달하거나 통증을 느끼면 이상이 발생한 것이다. 또한 엄지손가락관절의 이상에 대한 예방법과 치료법도 제시하였다. 50대 50명을 대상으로 엄지손가락 관절에서 손허리손가락관절굽힘과 손가락뼈사이관절굽힘에 대한 실험을 수행하였다. 본 시스템은 몸의 일부에 한정되어 있지만, 이를 부분적으로 확대해 나간다면 빅데이타 헬스케어시스템 구축의 기반이 될 것이다.

• 국제지역연구
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• 제22권1호
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• pp.79-99
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• 2018

문헌에 의하면 국제합작기업 파트너 특성이 합작기업성과에 미치는 영향에 대한 연구가 주로 부분적인 파트너 특성에 초점을 맞추고 있으며, 또한 파트너 특성과 합작기업성과의 관계에 대한 제휴몰입도의 매개효과 연구가 부족한 실정이다. 따라서 본 연구에서는 국제합작기업 파트너 간의 특성을 포괄적인 관점에서 CEO 리더십행동 유사성, 전략적 유사성, 자원적 유사성, 조직적 유사성 등으로 파악하고, 이들 특성이 제휴몰입도 및 합작기업성과에 미치는 영향에 대해 분석한다. 연구결과에 따르면 CEO 리더십행동 유사성과 조직적 유사성은 제휴몰입도 및 합작기업성과에 긍정적 영향을 미치는 반면, 전략적 유사성과 자원적 유사성은 제휴몰입도 및 합작기업성과에 부정적 영향을 미치는 것으로 나타났다. 또한 제휴몰입도는 합작기업성과에 긍정적 영향을 미치고, 파트너 특성과 합작기업성과의 관계를 매개하는 것으로 나타났다. 본 연구의 결과를 바탕으로 중요한 결론 및 시사점을 제시한다.

• Earthquakes and Structures
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• 제4권4호
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• pp.429-449
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• 2013

Current Design Codes for Reinforced Concrete (RC) interior beam-column joints are based on limited experimental studies on the seismic behavior of eccentric joints. To supplement existing information, an experimental study was conducted that focused on the effect of eccentricity of the deeper beams with respect to the shallow beams. A total of eight one-third scale interior joints with beams of different depths were subjected to reverse cyclic loading. The primary variables in the test specimens were the amount of joint transverse reinforcement and the cross section of the shallow beams. The overall performance of each test assembly was found to be unsatisfactory in terms of joint shear strength, stiffness, energy dissipation and shear deformation. The results indicated that the vertical eccentricity of spandrel beams in this type of joint led to lower capacity in joint shear strength and severe damage of concrete in the joint core. Increasing the joint shear reinforcement was not effective to alter the failure mode from joint shear failure to beam yielding which is favorable for earthquake resistance design, whereas it was effective to reduce the crack width at the small loading stages. Based on the observed behavior, the shear stress of the joint core was suggested to be kept as low as possible for a safe and practical design of this type of joint.

• International Journal of Automotive Technology
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• 제6권6호
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• pp.657-663
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• 2005

Recently, weight reduction of vehicles has been of great interest, and consequently the use of composite materials in the automotive industry is increasing every year. Composite sandwich panels which consist of two skins and core materials are replacing steels in automotive floor and door. The substitution of one material for another is accompanied by change of joining method, so that adhesive bonding has been popularly used for joining method of composite materials. In the case of adhesive bonding of composite materials, there could be loss in the joint strength by delamination of two faceplates or cracking on faceplate. Thus, it is necessary to prevent loss in the joint strength by designing the joint geometry. In the present paper, adhesive bonding of aluminum sandwich sheet was tried. For understanding joint behavior, studies on stresses in the single lap joint were reviewed and failure modes of composite material were analyzed. Strength tests on the single lap joint consisting of aluminum sandwich sheet and steel were performed and variation of the joint strength with the joint configuration was shown. Based on these results, design guide of adhesive bonding in aluminum sandwich sheet was suggested.

• International Journal of Control, Automation, and Systems
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• 제4권4호
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• pp.405-413
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• 2006

A novel approach based on genetic algorithms (GA) is developed to find a global minimum-jerk trajectory of a space robotic manipulator in joint space. The jerk, the third derivative of position of desired joint trajectory, adversely affects the efficiency of the control algorithms and stabilization of whole space robot system and therefore should be minimized. On the other hand, the importance of minimizing the jerk is to reduce the vibrations of manipulator. In this formulation, a global genetic-approach determines the trajectory by minimizing the maximum jerk in joint space. The planning procedure is performed with respect to all constraints, such as joint angle constraints, joint velocity constraints, joint angular acceleration and torque constraints, and so on. We use an genetic algorithm to search the optimal joint inter-knot parameters in order to realize the minimum jerk. These joint inter-knot parameters mainly include joint angle and joint angular velocities. The simulation result shows that GA-based minimum-jerk trajectory planning method has satisfactory performance and real significance in engineering.

• 한국전문물리치료학회지
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• 제2권2호
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• pp.108-118
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• 1995

The techniques of joint mobilization and traction are used to improve joint mobility or to decrease pain by restoring accessory movements to the shoulder joints and thus allowing full, nonrestriced, pain-free range of motion. In the glenohumeral joint, the humeral head would be the convex surface, while the glenoid fossa would be the concave surface. The medial end of the clavicle is concave anterioposteriorly and convex superioinferiorly, the articular surface of the sternum is reciprocally curved. The acromioclavicular joint is a plane synovial joint between a small convex facet on lateral end of the clavicle and a small concave facet on the acromion of the scapula. The relationship between the shape of articulating joint surface and the direction of gliding is defined by the Convex-Concave Rule. If the concave joint surface is moving on a stationary convex surface, gliding occur in the same direction as the rolling motion. If the convex surface is moving on a stationary concave surface, gliding will occur in an opposite direction to rolling. Hypomobile shoulder joints are treated be using a gliding technique.