• 대한통합의학회지
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• 제8권4호
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• pp.213-221
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• 2020

Purpose : This study aimed to evaluate the changes in visual perception and daily life activities after simultaneously applying the visual perception training program and transcranial DC stimulation. Particularly, this study tried to understand what changes in abilities among daily life activities influenced cognition. Methods : This study selected 50 dementia patients to achieve the objective. This study applied transcranial DC stimulation and a visual perception training program to a treatment group (n=25) and a visual perception training program to a control group (n=25). The intervention was applied five times per week and 30 minutes per session (total of 30 intervention sessions). This study measured visual perception functions and daily life activities using MVPT and FIM before and after applying the intervention. Results : The visual perception, mobility of daily life activities, cognition, and total score of the treatment group (n=25), which received the visual perception training program and transcranial DC at the same time, were significantly (p<.05) different between before and after the intervention. Moreover, when the visual perception and daily life activities of the treatment group and those of the control group after implementing the intervention were compared, they were significantly (p<.05) different between the two groups. Conclusion : The results of this study showed that the simultaneous application of the visual perception training program and transcranial DC stimulation was an effective means to enhance the visual perception and daily life activities of dementia patients. The results implied that transcranial DC stimulation, as well as the application of visual perception training program, as well as a visual perception training program, was effective for improving the visual perception functions and daily life activities dementia patients and simultaneous application of the two interventions would increase the effect even further.

• 대한토목학회논문집
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• 제30권1A호
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• pp.45-52
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• 2010

본 연구는 AGT 시스템의 콘크리트 주행면에 발생할 수 있는 요철이 교량 구조물에 미치는 영향을 파악하고자 경북 경산의 경량전철 시험선 중 30 m P.S.C. 교량을 대상으로 지간 중앙에 10 mm의 단차를 설치하여 교량에 가해지는 충격량을 실험을 통해 확인하였다. 아울러 이미 개발된 컴퓨터 시뮬레이션 프로그램과 실험을 비교하여 시뮬레이션 프로그램의 실무 적용 가능성을 평가하였다. 실험 결과 콘크리트 주행면에 단차가 있는 경우 교량 변위는 미약하게 증가하였으나 가속도 응답은 5 km/h의 주행속도에서는 평균 345%, 20 km/h부터 60 km/h까지는 평균 50%가 증가하여 콘크리트 주행면 단차가 교량에 과도한 충격 및 진동을 유발하여 교량 내구성에 악영향을 미칠 수 있음을 확인하였다. 아울러 개발된 AGT 차량 및 교량 동적 상호작용 해석 프로그램으로 단차에 의한 교량 변위 및 가속도 응답 해석을 수행한 결과 실험과 유사한 응답 시뮬레이션이 가능하였다. 이는 추후 AGT 교량 설계와 AGT 콘크리트 주행면 관리를 위한 기준 설정에 효과적으로 활용할 수 있음을 확인하였다.

• 근관절건강학회지
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• 제28권2호
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• pp.102-110
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• 2021

Purpose: This study aimed to verify the effects of a community-based fall prevention exercise program for older adults on lower extremity muscle strength, balance ability, and fall efficacy. Methods: This study recruited 30 participants, and the program was conducted for 10 weeks. The program included sessions on strength and balance exercises, conducted for 50 minutes a day and at least three times a week. The collected data were analyzed using non-parametric (Wilcoxon signed-rank test, generalized estimated equation) and parametric statistics (paired t-test, rmANOVA). Results: After 12 weeks of exercise program, lower extremity muscle strength and static-dynamic balance ability significantly increased. The fall efficacy increased from an average score of 2.48 points before the test to an average score of 2.91 points after the test. Regarding general characteristics, there were no significant differences in effect before and after the program, except for fall efficacy. Conclusion: The above results showed that the intervention of a community-based fall prevention exercise program for older adults was effective. Therefore, it is suggested that this exercise program be organized regularly within the center to provide periodic and long-term services.

• 한국지반공학회지:지반
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• 제13권6호
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• pp.123-138
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• 1997

중금속으로 오염된 점성토의 정화에 대한 electrokinetic기술의 효율을 연구하기 위하여 포화 해성점토를 납으로 오염시켜 전기삼투시험을 수행하였다. 이를 위하여 실험조건으로서 납의 오염농도 500, 5,000, 50,000mg/kg, 공급전류 10, 50, 100mA, 가동시간 5, 15, 30일 및 3가지의 효율 향상기법을 적용하였다. 유입수와 유출수의 pH, 전기삼투유량 및 전기전도도를 시험중에 측정하고 또 시험 완료후에 공시체전 길이에 걸쳐 pH및 잔존 납농도를 측정하여 제시하였다. 시험결과에 의해서 electrokinetic 기술이 효과적인 방법이라는 결론을 얻었다. 또한 음극에 침강된 수산화납을 용해시키기위해 초산을 가하게 되면 정화효율이 향상된다는 사실을 알 수 있었다.

• Journal of Magnetics
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• 제5권2호
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• pp.27-34
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• 2000

The structure of a series of Cu/Ni is characterized by using a program, SUPREX, to model the x-ray diffraction patterns, multilayers. The samples had nominal layer thickness of 3/3, 7/7, 13.5/13.5, 20/20, 30/30, 50/50, 80/80, 100/100, and 200/200 Angstroms. The diffraction patterns were taken around the (111) peak for the two constituent materials. A kinematical model is used to characterize the diffraction patterns and the parameters for the model are described. An initial model is calculated using initial guesses for the parameters. The model is then fit to the data by reducing $x^2$using the Levenberg-Marquardt algorithm. The samples are shown to be high quality supperlattices.

• 천문학논총
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• 제30권2호
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• pp.393-395
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• 2015

Weak gravitational lensing is an efficient technique for detecting galaxy clusters and probing their mass distribution. We present a weak gravitational lensing analysis of a large sample of galaxy clusters. We have built a nearly complete sample of 50 optically rich clusters, located in the redshift range 0.1 < z < 0.6 and observed in the Canada France Hawaii Telescope Legacy Survey (CFHT-LS). We used weak gravitational lensing to measure, for each galaxy cluster, the density radial profile, the total mass and the mass-to-light ratio (by comparing with the total luminosity of the member galaxies). This project is a preliminary step towards the next analysis of the weak lensing galaxy clusters in the surveys KiDS and VOICE, which are currently collecting data with the VLT Survey Telescope, in Chile.

• 성인간호학회지
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• 제18권4호
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• pp.660-667
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• 2006

Purpose: The purpose of this study was to investigate the effects of 12-week brisk walking and brisk walking plus diet program on C-Reactive Protein(CRP) in middle-aged obese hypertriglycemic($triglyceride{\geq}150mg/d{\ell}$) Korean women. Method: The subjects were 16 obese ($BMI{\geq}25$) hypertriglycemic middle-aged women (7 for brisk walking group, 9 for brisk walking plus diet group) who participated in a health promotion program at one public health center. Initially the brisk walking intervention consisted of walking for 20 minutes/day at an intensity of 40 to 50% of heart rate reserve(HRR) for 3 days/week and progressed to 50 minutes/day, 60 to 70% of their HRR, and 6 days/week. The diet intervention consisted of 60 minutes of group education and 20 to 30 minutes of individual counseling with a nutritionist every week. Data were analyzed with SPSS PC program. Results: There was no significant reduction in CRP levels in both brisk walking (Z=-1.70, p=0.088) and brisk walking plus diet group(Z=-0.31, p=0.752). In brisk walking only group, CRP levels were increased after the intervention. Conclusion: Brisk walking could increase the level of CRP when it is in the course of progression and diet could decrease the acute phase inflammatory response.

• 한국토양비료학회지
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• 제45권3호
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• pp.404-409
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• 2012

본 연구는 랜더링처리 가축사체 부산물의 농업적 재활용을 위한 퇴비화의 최적 톱밥 혼합조건을 구명하기 위하여 랜더링처리 가축사체와 톱밥의 비율을 100 : 0, 50 : 50 및 30 : 70으로 혼합하여 퇴비화 초기의 물질변환과 퇴비화 완료 후 퇴비 품질을 조사하였다. 퇴비의 온도, pH, Ammonia 및 $CO_2$의 발생은 시험개시 3일째 급격히 증가하였으며, 그 이후 시간이 지남에 따라 감소하였고, 유기물함량은 각각의 혼합비율에서 큰 차이를 보이지 않았다. 랜더링처리 가축사체와 톱밥의 비율이 100 : 0 처리구에서는 퇴비화의 진행속도가 느리거나 온도가 적정수준까지 상승하지 못하는 등의 문제점이 발생하였고, 30 : 70 처리구에서는 퇴비화 과정에서 유기물대 질소비가 부산물비료 공정규격 50이하를 충족시키지 못하였다. 따라서 랜더링처리 가축사체와 톱밥의 혼합비율은 100 : 0과 30 : 70에 비해서 50 : 50이 가장 적합하였다. 랜더링처리 가축사체와 톱밥을 50 : 50으로 혼합하여 제조된 퇴비의 유기물 규격함량과 유해물질(As, Cd, Cu, Cr, Hg, Ni, Pb 및 Zn)의 함량 및 그 밖의 규격 (유기물대질소비, 염분함량 및 수분함량)을 조사한 결과 비료 공정규격을 충족시키는 결과를 나타내었고, 추후 퇴비의 상품화를 위해서는 병원성 미생물, 대장균, 살모넬라균 및 부숙도 조사를 통한 안전성 검토가 추가적으로 필요할 것으로 판단된다.

• 대한간호학회지
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• 제37권6호
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• pp.966-975
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• 2007

Purpose: This study was to develop and to evaluate a health diary program for solitary elderly. Methods: The research design was a nonequivalent control group pretest-posttest design. There were 30 subjects the experimental group and 54 in the control group among solitary elderly over age 65. The independent variable was the health diary program, and the dependent variables were perceived health status, ADL, IADL, Blood pressure, blood sugar, quality of life, self efficacy and health promoting behaviors. The health diary program was performed for 50minutes, twice a week for 8 weeks. Data was collected from April 3 to June 23, 2006. Results: The experimental group showed a significant difference in perceived health status, blood sugar, ADL, IADL, quality of life, self efficacy, and health promotion behaviors than the control group. There were no significant differences in systolic & diastolic blood pressure. Conclusion: A health diary program showed good effects on improving health status, quality of life, self efficacy, and health promotion behaviors. Therefore, we recommend this program be utilized as a health promoting program for the solitary elderly in the community.

• 대한간호학회지
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• 제48권3호
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• pp.298-310
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• 2018

Purpose: The purpose of this study was to examine the effects of the laughter therapy program on perceived stress and psycho-neuro-endocrine-immune responses in obese women. Methods: A nonequivalent control group with a pretest-posttest design was used. The participants (n=60), whose age ranged from 30 to 50 years (pre-menopausal and body mass index of over $25kg/m^2$), were assigned to the experimental group (n=24) or control group (n=26). The experimental group was provided with the laughter therapy program (12 sessions) for 6 weeks. Results: There were significant differences in perceived stress, psychological stress response, fasting blood sugar, interleukin-6, and tumor necrosis factor alpha between the two groups after the program. However, there were no significant differences in normalized low frequency (norm LF), normalized high frequency (norm HF), LF/HF ratio, and cortisol between the two groups after the program. Conclusion: It was found that the laughter therapy program had positive effects on some variables in terms of perceived stress and psycho-neuro-endocrine-immuno responses. It is suggested that the laughter therapy in this study can provide the direction for developing a program for obese women.