• 대한토목학회논문집
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• 제13권2호
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• pp.253-265
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• 1993

본 연구는 Lade에 의해서 제안된 비선형구성모델을 이용하여 지반거동을 해석하기 위한 수치해석 방법을 제시하고자 한것이다. 그 첫 시도로서 축대칭조건과 평면변형율조건의 비선형 경계치 문제를 해석하기 위하여 변위법을 이용한 유한요소 프로그램을 개발하였다. 모델의 매개변수를 결정하기 위한 시험과 모형기초지반의 시험재료는 백마강모래를 사용하였다. 그리고 실내시험 자료로 부터 비선형구성모델 의 매개변수를 결정할 때 컴퓨터 프로그램을 개발하여 사용하였다. 구성 모델의 정도를 검증하기 위하여 개발된 유한요소프로그램을 사용한 예측결과를 매개변수 결정에 사용된 실험 결과뿐만 아니라 결정에 사용되지 아니한 실험결과와도 비교하였다. 검증에 사용된 시험은 다음과 같다 ; (1) 등방압축팽창시험, (2) 구속압력을 달리한 배수삼축압축시험 (3) 모형기초지반의 재하시험, 이상의 시험과 수치해석결과를 비교하여 비선형구성모델과 유한요소해석프로그램의 정도를 확인하고 평면변형율조건에 있는 2차원모형기초지반의 거동 특성을 검토하였다.

• 근관절건강학회지
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• 제24권3호
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• pp.217-226
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• 2017

Purpose: The aim of this study was to identify the effects of Tai Chi training program on physical fitness, stress response and ego-resiliency in nursing students. Methods: 28 nursing students of D metropolitan city participated in non-equivalent control group pre- and post-test group test in quasi experimental design with written consent. Fourteen participants in the control group who did usual activities and 14 experimental participants who promised to participate 24 Tai Chi training sessions for 12 weeks. Both groups completed pre- and post-test measurement for physical fitness, a questionnaire regarding their stress response and ego-resiliency. Each 60-minute Tai Chi session was consisted of 5-minute warm up, 10-minute meditation, 40-minute Tai Chi, and 5-minute finishing exercise. Results: After 12 weeks, participants in the Tai Chi group reported significantly higher score in muscle endurance (t=3.77, p=.001), leg muscular strength (t=2.14, p=.042), and balance (t=2.12, p=.044) compared to the control group. The Tai Chi group recorded significantly lower score than the control group on stress response (t=2.75, p=.011). Conclusion: The findings highlight the importance of Tai Chi for a reduction in stress response and promotion in physical fitness in nursing students. Applying Tai Chi training to nursing program will help nursing students to have better academic performance.

• 한국콘텐츠학회논문지
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• 제12권12호
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• pp.363-371
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• 2012

본 연구는 당뇨환자와 일반인을 대상으로 $VO_2peak$가 복부둘레, 혈중지질 및 혈압에 어떠한 영향을 미치는지 알아본 결과 당뇨환자인 경우 $VO_2peak$와 복부둘레에서 부적상관을 나타냈으며 유의한 차이가 나타났다. 고밀도 지단백 콜레스테롤은 정적상관을 보였으며 유의한 차이가 나타났다. 일반인의 $VO_2peak$와 이완기혈압에서는 정적상관을 보였으며 유의한 차이가 나타났다. 당뇨환자의 복부둘레에서 $VO_2peak$에 통계적으로 유의한 영향을 미치는 것으로 나타났으며, 일반인의 이완기 혈압에서 $VO_2peak$에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 또한 집단 간 복부둘레, $VO_2peak$, 고밀도 지단백 콜레스테롤, 중성지방, 혈압에서 집단 간 유의한 차이가 나타났다. 따라서 유산소능력($VO_2peak$) 지표들을 모니터링 함으로써 당뇨 환자들은 심혈관 질환의 위험요인을 관리할 수 있을 것으로 보인다. 또한 유산소능력을 향상시키는 운동을 실시하는 것 역시 심혈관 질환의 위험도를 낮추기 위한 좋은 방안이라고 사료된다.

• 한국의류산업학회지
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• 제3권1호
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• pp.70-80
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• 2001

This study was designed to investigate actual conditions of textile design education at technical high school in Korea, and to present possible solutions for improving its effectiveness. Inchon Girl's Polytechnic high School was selected as sample of case study because it was the only school which has textile design major. Survey was done through questionnaire and telephone interview. 100 students, 25 graduates, 8 teachers, and 8 managers of textile industry were involved in survey. The data were analyzed by using frequency, t-test, correlation. Statistical analysis resulted in the following suggestions to be considered for maximizing the effectiveness of the textile design education at technical high schools: First, the curriculum should be flexibly reorganized to come up with trends in the market and demands from industry, and also to stimulate and motivate students into the biggest achievements possible. Second, more weight should be given to practical design subjects which have proved to be preferred by students and industry by reducing class hours for non-design subjects or theoretical subjects. Third, equipments and facilities for practical exercise should be open to students anytime needed so that students can improve their practical skills without any restrictions. Fourth, new teachers having majored in textile design at the university should be employed and the existing teachers should be periodically re-educated to keep abreast with new knowledges and technology. Fifth, The solidarity and the connection between schools and companies should be reinforced, not only to provide graduates with more chances to get a job, but also to make education at schools refreshed and updated.

• Journal of Preventive Medicine and Public Health
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• 제48권3호
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• pp.151-169
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• 2015

Objectives: The deleterious effects of air pollution on various health outcomes have been demonstrated. However, few studies have examined the effects of air pollution on liver enzyme levels. Methods: Blood samples were drawn up to three times between 2008 and 2010 from 545 elderly individuals who regularly visited a community welfare center in Seoul, Korea. Data regarding ambient air pollutants (particulate matter ${\leq}2.5{\mu}m$ [$PM_{2.5}$], nitrogen dioxide [$NO_2$], ozone [$O_3$], carbon monoxide, and sulfur dioxide) from monitoring stations were used to estimate air pollution exposure. The effects of the air pollutants on the concentrations of three liver enzymes (aspartate aminotransferase [AST], alanine aminotransferase [ALT], and ${\gamma}$-glutamyltranspeptidase [${\gamma}$-GTP)]) were evaluated using generalized additive and linear mixed models. Results: Interquartile range increases in the concentrations of the pollutants showed significant associations of $PM_{2.5}$ with AST (3.0% increase, p=0.0052), ALT (3.2% increase, p=0.0313), and ${\gamma}$-GTP (5.0% increase, p=0.0051) levels; $NO_2$ with AST (3.5% increase, p=0.0060) and ALT (3.8% increase, p=0.0179) levels; and $O_3$ with ${\gamma}$-GTP (5.3% increase, p=0.0324) levels. Significant modification of these effects by exercise and alcohol consumption was found (p for interaction <0.05). The effects of air pollutants were greater in non-exercisers and heavy drinkers. Conclusions: Short-term exposure to air pollutants such as $PM_{2.5}$, $NO_2$, and $O_3$ is associated with increased liver enzyme levels in the elderly. These adverse effects can be reduced by exercising regularly and abstinence from alcohol.

• Journal of Preventive Medicine and Public Health
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• 제41권4호
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• pp.255-264
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• 2008

Objectives: This study adopted a qualitative method to explore the layman's beliefs and experience concerning high blood pressure and its management in order to develop a strategy to increase adherence to proper medical treatment. Methods: Semi-structured interviews that focused on personal experiences with hypertension and its management were conducted with 26 hypertensive patients. The participants were selected according to a BP above 140/90 mmHg (hypertension stage 1), based on the seventh report of the Joint National Committee on prevention, detection, evaluation and treatment of high blood pressure (JNC-VII). The interviews lasted for approximately 30 minutes (range: 20-60 minutes). The resulting questions were formulated into open-ended questions. The interview questionnaire was composed 17 items to examine non-adherence to treatment and 19 items to examine adherence to treatment. Results: Most participants recognized that the direct cause of high blood pressure was unhealthy behavior rather than inheritance. Thus, the hypertensive patient believed they could recover their blood pressure to a normal level through removing the direct cause of hypertension (weight reduction, diet, exercise) instead of taking drugs. The reasons for these statements were that the drugs for controlling hypertension are not natural or they are artificial, and they may have side effects, and drugs are not treatment for the root cause of hypertension. Most of the hypertensive patients chose to manage their behaviors as soon as they knew their blood pressure was high. Therefore, we should not divide the subjects into two groups according to their taking drugs or not, but they should be divided into two groups according to their willingness or not to manage their condition. Conclusions: For developing a strategy for an individual approach to hypertension management, we need to develop a client-centered attitude and strategy. That is, we need to tailor our approach to individual cases to avoid generalizations and stereotyping when developing an adherence increasing strategy.

• PNF and Movement
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• 제15권3호
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• pp.317-331
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• 2017

Purpose: Balance and walking ability are important elements of functional independence for people with stroke and are major goals in rehabilitation. These abilities require trunk performance, but most chronic stroke patients reach a plateau in their rehabilitation. Therefore, the purpose of this study was to investigate the effects of a self-training trunk program to improve balance and walking ability in people with stroke, and to suggest such a self-training program for integrated rehabilitation of people with stroke. Methods: The study recruited 7 people with stroke. The subjects performed trunk training for 30 min per day, 6 days per week, for 3 weeks. Participants were measured on the Trunk Impairment Scale (TIS), the Berg Balance Scale (BBS), the Korean Activities-specific Balance Confidence (K-ABC) scale, the Falls Efficacy Scale (FES), the Functional Gait Assessment (FGA), the 6 Minute Walk Test (6MWT) and a gait analysis to measure the training effects. Statistical analysis used the Wilcoxon signed-rank test as a non-parametric statistical test. Results: TIS was not significantly different after the self-training trunk program, but BBS (p>0.05), K-ABC, and FES were significantly improved after the training program (p<0.05). Furthermore, the 6MWT, stride/height %, and one-leg stance were significantly improved after the training program (p<0.05), but cadence, stance, and swing duration were not significantly different after the training (p>0.05). Conclusion: These results suggest that a self-training trunk program should be integrated into stroke rehabilitation to improve balance and walking ability, and further research is needed to develop the program to be more effective for chronic stroke patients.

• 한국식품영양학회지
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• 제30권1호
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• pp.83-95
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• 2017

This study examined the socioeconomic factors that affect self-rated health (SRH) in healthy adults, and the relationship of SRH to health-related habits, serum biochemical indices, and nutritional intakes. Subjects consisted of 1,154 healthy adults without any known disease, aged 19 to 65 years (average age of 36.7), whose information was obtained from the 2013 Korean National Health and Nutritional Examination Survey data. Of these subjects, 73 rated themselves as 'very healthy,' 460 indicated that they were 'healthy,' 568 self-identified as 'ordinary', and 53 put themselves in the 'unhealthy' category. The proportion of subjects who chose 'unhealthy' was significantly increased with higher frequencies of disruptions in their daily lives (p<0.05), regret after drinking (p<0.05), smoking (p<0.001), and higher levels of stress (p<0.001). On the other hand, the proportion of subjects reported as 'very healthy' was significantly higher with regular intense (p<0.001) or moderate physical activities (p<0.05), regular walking (p<0.05), a perception of being 'normal' in their body image (p<0.01), a decrease of body weight more than 3 kg in the past year (p<0.05), and without risk factors for metabolic syndrome (p<0.05). Serum triglyceride level was lower, and 25-(OH) vitamin D content was significantly higher, in the 'very healthy' group as compared to the 'unhealthy' group (p<0.05). Dietary fiber and vitamin C intakes were significantly higher in the 'very healthy' group than 'unhealthy' group (p<0.05). The overall results suggest that a healthy lifestyle, including regular exercise, non-smoking, good stress management, and higher intakes of fiber and vitamin C, may be potential factors that affect one's positive perception of health.

• Asian Pacific Journal of Cancer Prevention
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• 제13권10호
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• pp.5171-5176
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• 2012

We here performed a systematic review of PBIC literature using terms analysis in a hope of both identifying potential trends and patterns and exploring methods leveraging traditional literature reviews in this specific area. Articles meeting inclusion criteria were retrieved from PUBMED and translated into dichotomized article records representing presence or non-presence of MeSH terms and a metric consisting of numbers of times of co-occurrence between all pairs of terms identified using a self-designed program. The occurrence of and relations among the terms were calculated and visualized using Excel2007 and UCINET respectively. A total of 1,742 terms were identified from 997 articles retrieved. Put in a descending order, the lines representing the times of term occurrence formed a typical hyperbolic curve; when plotted along the x-axis of whole MESH terms, the lines clustered within four specific regions. Comparison of term occurrence between 2002 and 2011 revealed priority changes in population and subjects (from general groups to priority groups), intervention approaches (from medicine to exercise and psychotherapy), methodology and techniques (from cohort studies to randomized controlled trials) and outcomes (from health and mental health to quality of life, depression etc.). Networks of the terms featured a number of closely linked groups of topics including method and questionnaires, therapy and outcomes, survival management, psychological assessment and intervention, behavioral intervention (individual and community oriented). Terms analysis revealed interesting trends and patterns about PBIC publications and both the analysis methods and findings have implications for future research and literature reviews.

• 한국산학기술학회논문지
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• 제15권3호
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• pp.1641-1649
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• 2014

본 연구는 대장 용종 발생의 위험인자를 파악하기 위해 종합검진 수검자 중 대장내시경 검사와 복부초음파검사를 동시에 시행 받은 508명을 대상으로 나이, 성별, 흡연, 음주, 운동의 일반적인 특성과 신장, 체중, 혈압, 허리둘레, 체질량 지수 등의 신체 계측을 하였으며, 동시에 채혈을 통한 공복 시 혈당과 여러 가지 혈액검사를 분석하였다. 그 결과 AST, ALT, 총콜레스테롤, 지방간, 비만도 및 흡연여부가 유의하게 높은 것으로 나타났으며 대장용종이 있는 대상자가 지방간과의 관련성이 3.4배로가 가장 높았고, 다음으로 총콜레스테롤 2.3배, 흡연자가 비흡연자에 비해 2.3배나 위험성이 높게 나타났다.