• 한국운동역학회지
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• 제25권1호
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• pp.65-76
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• 2015

Objective : The purpose of this study was to analyse the differences in core stability and muscle balance of the pilates Teaser motion according to the surfaces and skills. Methods : There were 10 subjects in this study with 5 being skilled and 5 that were not skilled. The independent variables were surfaces (high elastic & aluminum) and skills (skilled & unskilled). Dependent variables were core stability and muscle balance. Core stability was measured by Force Platform (9872, Switzerland), 3D Imagery (IBS-2000, EXYMA) was used to understand the muscle balance. In order to do the Teaser movement subjects had to lay flat on their back and then lean forward as much as possible and hold the position for 10 seconds. Afterwards, they would lay back down again. A camera (MHS-PM5K, SONY) was used to make 4 phases (take off, recoil forward, holding, recoil backward) during the teaser exercise to analyze movement. In this study quantitative and qualitative analysis was used. For the statistical analysis, 2X2 ANOVA was used to analyze the differences in movement time, X,Y,Z maximum force, center of pressure and angles according to different phases. 2X3 ANOVA was used to analyze the differences in muscle balance via SPSS 18.0. Results : Soft. Elastic mat had a longer holding time, lower Fx/ Fy/ Fz, shorter Fx trajectory, larger angle and shorter gaps in muscle balance than a hard surface in skilled subjects. This was because the mat can help to recruit and then sustain core fine muscles during holding time in the Teaser movement.

• 디지털융복합연구
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• 제14권11호
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• pp.557-564
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• 2016

본 연구의 목적은 여대생들이 갖는 부적응적 완벽주의 및 핵심자기평가가 신체불만족에 미치는 영향을 확인하여, 신체불만족에 부정적 영향을 미치는 여대생들의 심리적 기제를 파악하고자 하는 것이다. 이를 위해 조사대상자를 서울 1곳, 경기 1곳의 4년제 대학에 재학 중인 여대생들로 선정하여 2016년 3월부터 5월까지 412부의 설문지를 배포하였다. 321부가 회수되었고 그 중 답변이 불충분한 설문을 제외하여 315부가 분석에 사용되었다. 부적응적 완벽주의 및 핵심자기평가를 독립 변인으로, 신체불만족을 종속변인으로 설정하여 다중회귀분석을 실시하였다. 본 연구결과, 여대생의 신체불만족에 영향력이 있는 변인은 자기 자신에 대한 핵심자기평가로 확인되었고, 부적응적 완벽주의는 신체불만족의 영향요인으로 유의미하지 않았다. 결론적으로 여대생들의 신체불만족을 낮추는데 있어서 긍정적인 자기핵심평가의 증진이 요구됨을 알 수 있다.

• The Journal of Korean Physical Therapy
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• 제31권4호
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• pp.216-221
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• 2019

Purpose: This study examined the effect of visual feedback squat on the core muscle thickness of young adults experiencing back pain. Methods: Thirty adult men and women who experienced back pain were assigned randomly to 15 members of the visual feedback squat group (VSG) and 15 of the normal squat group (NSG) to train three times a week for a total of eight weeks. The core muscle thickness was compared prior to the test for four weeks and eight weeks after the test by dividing it into warm-up exercise, main exercise, and 10 minutes finishing exercise. Before, and four weeks and eight weeks later, the thickness of the core muscle was compared using an ultrasonic imaging system. Repeated measured ANOVA was performed to compare the groups, and a Bonferroni test was performed as a post-hoc test to assess the significance of the timing of the measurements in each group according to the periods. An independent t-test was conducted to test the significance between the groups according to the measurement points. Results: A significant change in the main effects of time and interactions of the time difference in muscle thickness of transvers abdominis were observed between the visual feedback squat and control groups according to the measurement point (p<0.05). No significant difference in the muscle thickness of both muscles was observed between the groups with the exception of the right abdominis (p>0.05). Conclusion: These findings suggest that visual feedback squat exercise is expected to have positive effects on the development of transverse abdominis in core muscles.

• 한국콘텐츠학회논문지
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• 제18권11호
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• pp.665-678
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• 2018

본 연구의 목적은 스마트폰 동영상을 활용한 자기성찰 실습이 간호학생의 핵심 간호술 수행자신감, 실습만족도, 학업적 자기효능감 및 성취도에 미치는 효과를 검증하기 위함이다. 연구설계는 비동등성 대조군 사후 유사 실험연구이며 연구대상은 중재에 참여한 실험군 43명과 참여하지 않은 대조군 43명으로 총 86명이었다. 자료수집은 2018년 3월 2일부터 5월 30일까지 이루어졌으며, 핵심간호술 수행자신감, 실습만족도, 학업적 자기효능감은 자가 기입식 설문조사 방식으로, 핵심기본간호술 성취도는 2명의 연구자에 의한 관찰평가로 수집하였다. 자료분석은 ${\chi}^2$-test 및 independent t-test를 통해 분석하였다. 연구결과를 통해 스마트폰 동영상을 활용한 자기성찰 실습에 참여한 실험군과 참여하지 않은 대조군에서 실습 자신감(t=2.170, p=.033), 학업적 자기효능감(t=3.096, p=.033), 핵심 기본 간호술 성취도(t=2.817, p=.007)는 통계적으로 유의한 차이가 있었지만 실습만족도는 두 군 간에 유의한 차이가 없었다. 본 연구결과를 통해 스마트폰 자기성찰 실습이 간호 교육현장에 도입되어 간호교육의 목표달성에 기여하기 위해 적극 활용되길 기대한다.

• 비교교육연구
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• 제27권1호
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• pp.171-197
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• 2017

중국의 독립학원은 민간의 교육투자를 인정하여 투자자 개인이나 기업, 사회의 지원 자금 활용을 용이하게 하고, 학교의 학사 운영, 학생 입학전형, 예산의 집행 및 관리, 별도의 법인 설립 및 학력 인정 등에 대해서 국가 주도로 설립된 공립대학과 다르게 사립대학인 민판학교 방식으로 자율적인 운영을 보장하는 등 중국내의 고등교육기관의 다양성을 갖추고자 하는 목적으로 설립되었다. 하지만 1990년대 초반 이후 중국 고등교육의 새로운 방식으로서 나타나게 된 독립학원은 지난 30여년의 시간 동안 양적인 성장을 이루었음에도 아직 교육의 질적 측면에서의 성장은 미흡한 상황이다. 중국의 독립학원이 관심을 받는 이유는, 독립학원이 모체 대학(母體)의 시설과 교수, 개설된 전공에서 지원을 받고 대학의 명성을 공유하는 등 대학 자체의 발전을 위한 노력보다는 학생 모집에 중점을 두는 방식으로 운영한다는 것이다. 따라서 본 연구는 중국의 독특한 고등교육기관인 독립학원의 현황과 관련한 정책을 분석하고자 하였다. 연구 목적을 달성하기 위해 다차원 교육정책분석 모형을 활용하여, 규범적 차원으로 중국의 독립학원 정책의 영리성 문제와 중국인의 차서격국(差序格局) 중심의 ?시(關係) 문화를, 구조적 차원으로 독립학원 관련 정부기관 구조, 국유민판의 운영구조를, 구성적 차원으로 중국의 독립학원 이해관계자의 속성을, 기술적 차원으로 독립학원 정책과 법제화 과정을 살펴보고자 하였다. 분석 결과를 통해 중국의 독립학원 정책의 방향성에 대한 시사점을 제시하고자 한다.

• Journal of the Optical Society of Korea
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• 제10권3호
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• pp.99-104
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• 2006

We introduce a novel contrast mechanism for imaging superparamagnetic iron oxide (SPIO) nanoparticles (average diameter ${\sim}100nm$) using magneto-motive optical Doppler tomography (MM-ODT), which combines an externally applied temporally oscillating high-strength magnetic field with ODT to detect the nanoparticles flowing through a glass capillary tube. A solenoid cone-shaped ferrite core extensively increased the magnetic field strength ($B_{max}=1\;T,\;{\Delta}|B|^2=220T^2/m$) at the tip of the core and also focused the magnetic force on targeted samples. Nanoparticle contrast was demonstrated in a capillary tube filled with the SPIO solution by imaging the Doppler frequency shift which was observed independent of the flow rate and direction. Results suggest that MM-ODT may be a promising technique to enhance SPIO nanoparticle contrast for imaging fluid flow.

• Archives of Pharmacal Research
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• 제8권1호
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• pp.7-14
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• 1985

Membrane-coated tablet of isonicotinic acid hydrazide (INAH) which releases INAH at the zero-order kinetics was deveoped. It consisted of a soluble tablet core surrounded by a porous membrane which controls the diffusion rate. Tablet cores were prepared by compressing granules of INAH and polyvinyl chloride (PVC) dissolved in methyl ethyl ketone in which micronized sucrose were suspended. Diffusion rate of INAH from the tablet through the membrane was constant until the loaded INAH in the core was almost released. The rate was independent of pH of the dissolution medium. Water-soluble sucrose particles behaved as a poreproducing material in the water-insoluble PVC film coat. The pH independency of the rate was probably due to the high solubility of INAH in the water of wide pH range. The diffusion rate of INAH could be controlled by chnaging the composition of the membrane or the coat weight. This membrane-coated INAH tablet seemed to be a powerful candidate for the controlled release drug delivery system (DDS) of INAH or other highly watersoluble drugs.

• Structural Engineering and Mechanics
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• 제82권5호
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• pp.643-650
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• 2022

In this paper a novel mathematical model and its analytical solution of global buckling behaviour of slender elastic concrete-filled double-skin tubular (CFDST) columns with finite compliance between the steel tubes and a sandwiched concrete core is derived for the first time. The model is capable of investigating the influence of various basic parameters on critical buckling loads of CFDST columns. It is shown that the elastic buckling load of circular and slender CFDST columns is independent on longitudinal contact stiffness, but, on the other hand, it can be considerably dependent on circumferential contact stiffness. The increasing of the circumferential contact stiffness increases the critical buckling load. Furthermore, it is shown that analytical results can agree well with the experimental and numerical results if the calibrated values of circumferential contact stiffness are used in the calculations. Moreover, it is shown that the contact between the steel tubes and a sandwiched concrete core of tested large-scale CFDST columns used in the comparison is relatively weak. Finally, the proposed analytical results can be used as a benchmark solution.

• 시스템엔지니어링학술지
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• 제10권2호
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• pp.89-95
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• 2014

In recent years, the United States have been several major failures of launch. As a result of these failures, activity of mission assurance valued. Mission assurance is defined as the application of systems engineering process towards the goal of achieving mission success. Therefore, mission assurance perform independent technical assessments throughout the concept and requirements definition, design, development, production, test, deployment, and operations phases. Space system program was emphasized the importance of the system engineering for that required huge cost and long term development. For this reason, independent review and verification of mission assurance is essential. Mission assurance gives us confidence to proceed with launch and best opportunity for mission success. In this study, framework of mission assurance is proposed by foreign case analysis.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 추계종합학술대회 논문집
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• pp.326-329
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• 1999

In this paper, we demonstrate a polarization independent optical phase modulator using electro-optic polymer, P2ANS. To overcome the intrinsic polarization dependency of electro-optic effect, we control the optic axis using a new electrode structure. P2ANS(42:75) and P2ANS(25:75) are used for the core layer and the cladding layer, respectively. The buried-type single mode waveguide is fabricated by oxygen ion reactive etching and electic poling is performed by applying 1, 200V at 135$^{\circ}C$. The measured V$_{\pi}$ of the device for both TE and TM modes are 70V.