• 한국전자통신학회논문지
• /
• 제8권11호
• /
• pp.1777-1784
• /
• 2013

본 연구는 필라테스 매트 운동을 통해 신체조성과 혈관탄성도의 변화를 확인하고 향후 노인 건강 증진을 위한 운동프로그램시 근거자료로 활용하고자 시도하였다. 노인 여성 30명을 대상으로 대조군과 운동군으로 분류하여 운동군은 1회 60분씩, 매주 3회 총 12주간 필라테스 매트 운동을 실시하였다. 신체조성에서는 골격근량(p<.01)과 체지방률(p<.01)이 통계적으로 유의한 감소가 있었고, 체지방량에서는 통계적으로 유의한 차이가 없었다. 혈관탄성도에서는 수축기 혈압(p<.01)과 말초 동맥압(p<.01)이 통계적으로 유의한 감소가 있었고, 이완기혈압과 대동맥압에서는 통계적으로 유의한 차이가 없었다.. 결론적으로 12주간 필라테스 매트 운동은 노인 여성의 신체조성과 혈관탄성도에 긍정적인 효과가 있음을 알 수 있었다.

• Journal of Advanced Marine Engineering and Technology
• /
• 제30권8호
• /
• pp.853-862
• /
• 2006

The present study is numerically investigated the flame structure of non-premixed counterflow jet flames using the laminar flamelet model Detailed flame structures with the fuel composition of 40% CO, 30% $H_2$. 30% $N_2$ and an oxidizer composition of 79% $N_2$ and 21% $O_2$ in a non-premixed counterflow flame are studied numerically. This study is aimed to investigate the effects of axial velocity gradient and combustion atmosphere pressure on flame structure. The results show that the role of axial velocity gradient on combustion processes is globally opposite to that of combustion atmosphere pressure. That is, chemical nonequilibrium effects become dominant with increasing axial velocity gradient, but are suppressed with increasing ambient pressure. Also, the flame strength is globally weakened by the increase of axial velocity gradient but is augmented by the increase of ambient pressure. However, flame extinction is described better on the basis of only chemical reaction and in this study axial velocity gradient and ambient pressure play a similar role conceptually such that the increase of axial velocity gradient and ambient pressure cause flame not to be extinguished and extend the extinction limit, respectively. Consequently it is suggested that a combustion process like flame extinction is mainly influenced by the competition between the radical formation reaction and the third-body recombination reaction.

• 성인간호학회지
• /
• 제19권3호
• /
• pp.339-352
• /
• 2007

Purpose: The purpose of this study was to investigate the effect of weight control program on body composition(body mass index and waist-hip ratio), blood pressure, serum lipids(total cholesterol, triglyceride, high density lipoprotein and low density lipoprotein) and self-regulation behavior in obese college women. Methods: Forty seven obese subjects were divided into experimental(22) and control(25) groups. The weight control program lasting 12 weeks consisted of a traffic-light diet, jumping-rope exercises, and behavior modification methods with e-mail counseling. The data were collected from 29 March to 17 September of 2004. The variables were assessed before and after intervention for 12 weeks in two groups. Then, those were repeated after a 12 week suspension of intervention in the experimental group. The data were analysed by the SPSS computer program. Results: BMI, HDL, LDL and self-regulation behavior levels showed significant differences between the experimental and control groups. While there were no significant differences in waist-hip ratio, blood pressure, total cholesterol and triglyceride. Conclusion: The weight control program had a positive effect on obese college women, and can be used to control obesity.

• 한국연소학회지
• /
• 제3권1호
• /
• pp.21-29
• /
• 1998

Mathematical modeling of combustion characteristics in HVOF thermal spray processes was carried out on the basis of equilibrium chemistry. The main objective of this work was the development of a computation code which allows to determine chemical composition of combustion products, adiabatic flame temperature, thermodynamic and transport properties. The free energy minimization method was employed with the descent Newton-Raphson technique for numerical solution of systems of nonlinear thermochemical equations. Adiabatic flame temperature was calculated by using a Newton#s iterative method incorporating the computation module of chemical composition. The performance of this code was verified by comparing computational results with data obtained by ChemKin code and in the literature. Comparisons between the calculated and measured flame temperatures showed a deviation less than 2%. It was observed that adiabatic flame temperature augments with increase in combustion pressure; the influence was significant in the region of low pressure but becomes weaker and weaker with increase in pressure. Relationships of adiabatic flame temperature, dissociation ratio and combustion pressure were also analyzed.

• 한국콘텐츠학회논문지
• /
• 제14권10호
• /
• pp.361-373
• /
• 2014

동양회화 수업이 소홀히 여겨지는 이유는 교사의 부담과 용구의 준비와 사용의 번거로움 때문이다. 이러한 부담감은 매체의 전환으로 극복될 수 있다. 본 연구는 동양회화 수업의 단점을 극복하고 학생들의 흥미를 높이며 효과적인 구도 수업을 위한 방안으로 포토샵 프로그램의 레이어를 활용한 동양회화 구도 수업을 제시하였다. 포토샵을 활용한 동양회화 구도 수업 안을 개발하고 그 효과를 알아보고자 고등학교 1학년 60명을 대상으로 수업 전과 후에 설문조사를 시행하고 수업 결과물을 분석하였다. 대다수(75%)가 동양회화 구도 수업에 포토샵 수업이 적절하며, 포토샵을 활용한다면 주제에 상관없이 참여하겠다는 의견이 58.3%로 포토샵에 높은 흥미를 나타내었다. 포토샵 프로그램을 활용한 수업의 장점으로 직접 그리지 않아 부담이 적은 점(33.3%), 다양한 표현이 가능한 점(30%), 준비물이 없는 점(26.6%) 등을 답하여 포토샵 활용이 기존 동양회화수업의 단점을 극복할 수 있음을 확인할 수 있었다.

• 척추신경추나의학회지
• /
• 제2권1호
• /
• pp.115-125
• /
• 2007

Objectives : The limited number of studies to date have mainly focused on the effect of obesity on the characteristics of plantar foot pressures. This study is designed to find the correlation between plantar pressure and obese index. Methods : This study assessed the body composition of 30 obese women using bioelectrical impidence analysis and Gaitview AFA-50. The static and dynamic plantar pressure was determined from electronic footprints captured using a capacitive pressure distribution platform during standing and walking. The data were analysed by independent t-test and Pearson Correlation. Results : Positive correlations were noted between body weight, body mass index(BMI), waist circumference(WC), waist-hip ratio(WHR) and difference of fore and rear plantar pressure. And negative correlations were noted between body weight, BMI, WC, WHR and difference of left and right plantar pressure. Conclusions : The findings of this pilot study suggest that body composition influences the waight distribution in overweight and obese subjects.

• 한국군사과학기술학회지
• /
• 제8권4호
• /
• pp.146-151
• /
• 2005

The burning rates of combustible cartridge cases(CCCs) of 120mm kinetic energy ammunition were measured by CBT(Closed Bomb Tester). The burning coefficient was 1.4 for CCC fabricated by Post Impregnation(PI) process, and 1.0 for that by Beater Additive(BA) process. The BA process CCC showed the fixed burning coefficient of 1.0 in spite of changing the composition of CCC. As the Korean Future Main Battle Tank is requiring the high penetration performance compared with that of KlAl tank ammunition(K276), CCC was designed to have higher impetus composition than that of K276 composition(525J/g). The optimum impetus was 600J/g when considering the increases of pressure and muzzle velocity with increasing impetus. When impetus of CCC by changing the composition increased from 525J/g to 600J/g, the muzzle velocity of 12m/s at pressure increase of 3500psi increased in case of using SCDB propellant.

• 한국미생물·생명공학회지
• /
• 제1권1호
• /
• pp.25-30
• /
• 1973

본 연구는 1971년과 1972년 9월 25일에 수확한 흥옥과 동년 10월 25일에 수확한 국광을 시료로하여 이들 사과의 저장에 있어서 환경압력 및 환경기체조성이 사과조직내 기체조성과 호흡 및 ethylene 생성에 미치는 영향을 규명하기 위하여 실험하였던 바 그 결과는 다음과 같다. 1. 과실조직내 기체량은 환경압력에 비례적으로 변화하며, 환경압력이 사과의 조직내 기체조성 및 기체량에 현저하게 영향을 미쳤다. 2. 조직내 $CO_2$발생량의 증가는 조직내 $O_2$ 소비량에 관련되며, 그러므로 내부 $O_2$ 소비의 감소되는 시기와 호흡에 있어서 climacteric rise의 시기와 일치하였다. 3. $CO_2$ 발생량의 증가는 ethylene 생성 후에 나타나며 그리고 상압구의 이와 같은 현상은 감압구에 잇달아 일어난다. 4. 감압저장에 있어서도 저산소농도와 고탄산가스농도의 조절로써 CA효과를 얻을 수 있다.

• 한국연소학회:학술대회논문집
• /
• 한국연소학회 2006년도 제33회 KOSCO SYMPOSIUM 논문집
• /
• pp.36-41
• /
• 2006

A simplified model of plastic layer and internal gas pressure In a coke oven is presented. We calculate internal gas pressure using presented model. And results are compared with calculated results using experimental data. Results show the difference of internal gas pressure by coal composition. The model is used to show that the permeability at the resolidification end of the plastic layer is a key determinant of the magnitude of the internal gas pressure.

• 반도체디스플레이기술학회지
• /
• 제4권1호
• /
• pp.43-48
• /
• 2005

Metaloganic chemical vapor deposition, also known as metalorganic vapor phase epitaxy has become one of the main techniques for growing thin, high purity films for compound semiconductors such as GaAs, InP, and InGaAsP. In this study, the distribution of growth rate and composition of InGaAsP, InGaP, and InGaAs films are studied using computational method. The influences of process parameters such as pressure, temperature and precursors' partial pressure on the growth rate and composition distributions are analyzed. The film growth rate is increased in the upstream part according to the increase of temperature but not in the downstream part. The Ga composition in InGaAsP film shows an asymptotic behavior for temperature variation but As composition varies significantly within the temperature range considered in the present study. The overall film growth rates of InGaP, InGaAs and InGaAsP are decreased with increasing the Ga/In ratios of the source gases. Pressure variation does not seem to be a significant parameter to the film growth. Film growth characteristics of tertiary films such as InGaP and InGaAs show similar trends to the quaternary film, InGaAsP.