• 제목/요약/키워드: self-weight

검색결과 1,722건 처리시간 0.031초

증점제를 사용한 고유동콘크리트의 기초 물성 (Fundamental Properties of Self-Compacting Concrete Using Viscosity Modifying Admixture)

  • 김진철;안태송;문한영
    • 콘크리트학회논문집
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    • 제11권6호
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    • pp.69-78
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    • 1999
  • Hydroxyethyl cellulose -based-viscosity modifying admixture and melamine-basd-superplasticizer were selected to be admixtures for self-compacting concrete based on the test results of fluidity and air content of mortar using 3 different viscosity modifying admixtures. The experimental results show that the initial and final set of self-compacting concrete and fly ash concrete with viscosity modifying admixture only have been delayed approximately 5 hours and 8~9 hours, respectively. It is found that the optimum dosage of viscosity modifying admixtures, coarse aggregate and cement content are 0.2% of water content, under 742 kg/$\textrm{m}^3$ and over 364 kg/$\textrm{m}^3$, respectively. Test results also show that the optimum fly ash in replacement of cement is 10% of cement weight for the enhancement of fluidity and long-term strength.

경량골재를 사용한 자기충전 콘크리트의 탄산화 (The carbonation of self-consolidating concrete using lightweight aggregate)

  • 김용직;김영진;최연왕
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2009년도 춘계 학술대회 제21권1호
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    • pp.245-246
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    • 2009
  • 일반적으로 경량콘크리트는 구조물의 자중을 줄일 수 있는 장점 때문에 부재단변의 축소 및 시공 의 간편화를 이룰 수 있어 장경간 교량 및 초고층 건물 등에 적용하여 시공비용을 절감함 수 있는 효과가 있다. 그러나 경량골재는 골재자체의 특성상 콘크리트 제조시 굳지 않은 상태에서 재료분리를 일으킬 수 있다. 따라서, 본 연구에서는 경량골재를 자기충전콘크리트 배합설계에 적용하였으며, 역학적 특성과 탄산화에 대하여 검토하였다.

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비만 여성노인을 위한 유산소 운동프로그램의 적용 효과 (Effects of Aerobic Exercise Program for Obese Elderly Women)

  • 김인홍
    • 성인간호학회지
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    • 제17권3호
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    • pp.425-434
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    • 2005
  • Purpose: To examine the effects of the aerobic exercise program on changing the body composition, blood lipids and self-esteem of the obese elderly women. Method: A total of 26 obese elderly women(%body fat: over 30%) have been selected for this research[Experimental Group(EG):13, Control Group(CG):13). Walking at a 50% intensity was administered 4 days a week for 14 weeks. The data was analyzed using the SPSS program. Result: The level of % body fat, TC, LDL-C, and %TC/HDL-C in EG was significantly lower than those of the CG after 14 weeks. In addition, the level of HDL-C and self-esteem in EG was significantly higher than those of the CG after 14 weeks. However, TG, body weight between groups didn't appear significant at the end of 14 weeks. Conclusion: The results showed that the aerobic exercise program was effective in changing body composition, blood lipids and self-esteem of the obese elderly women.

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하이브리드FRP 탄소계 리브 및 탄소섬유시트 보강 콘크리트의 자가진단 기능 검토 (Self-diagnosis property of strengthened concrete by rib of hybrid FRP and carbon fiber sheet)

  • 박석균;김대훈
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2006년도 춘계학술발표회 논문집(I)
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    • pp.358-361
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    • 2006
  • For giving self-diagnosing capability, a method based on monitoring the changes in the electrical resistance of carbon materials in strengthened concrete has been tested. Then after examining change in the value of electrical resistance of carbon materials used as a rib of CFGFRP or a sheet of carbon fiber before and after the occurrence of cracks and fracture in hybrid FRP or carbon fiber sheet strengthened concrete at each flexural weight-stage, the correlations of each factors were analyzed.

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자기진단 기능의 탄소섬유 복합재료 모르타르의 파괴예측 거동 (Self-Diagnosis of Fracture in Carbon Fiber Composite Mortar)

  • 박석균;이병재;이웅종;김진근
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2004년도 추계 학술발표회 제16권2호
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    • pp.651-654
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    • 2004
  • In the research for giving self-diagnosing capability, conductive mortar intermixed with cokes and milled carbon fiber was produced. Then after examining change in the value of electric resistance dsand AE characteristics before and after the occurrence of cracks at each weight-stage, the correlations of each factors were analyzed.

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비만치료에 있어서 중도탈락과 감량 후 체중유지에 영향을 주는 인자들에 대한 고찰 (Review on predictors of dropout and weight loss maintenance in weight loss interventions)

  • 김서영;박영재;박영배
    • 대한한의학회지
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    • 제37권3호
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    • pp.62-73
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    • 2016
  • Objectives: Dropout and weight regain are common problems in most obesity treatments. The purpose of this study was to review previously published study results of the predictive factors associated with dropout during weight loss treatment and weight loss maintenance after successful weight loss. Methods: Authors searched for the articles related to dropout and weight loss maintenance, published from 2007 to 2016 found on Pubmed, Scopus, RISS, and KISS. A total of 19 articles were finally selected. From the study results, unchangeable and changeable predictors were extracted, and these predictors were examined according to dropout and weight loss maintenance categories. Results: The unchangeable predictors of dropout were younger age, lower education level and female, whereas the changeable predictors of dropout were lower initial weight loss, symptoms of depression and body dissatisfaction. The strongest factor for predicting the dropout was initial weight loss. The unchangeable predictors of weight loss maintenance were old age, male and family history of obesity, whereas the changeable predictors of weight loss maintenance were regular exercise, dietary restraint, self-weighing and low depressive symptoms. Initial weight loss, depressive symptoms, body image, dietary restraint, physical activity, weight loss expectation and social support were considered to be dominant factors for weight loss treatments. Conclusions: Our review results suggest that unchangeable and changeable predictors of dropout and weight loss maintenance should be carefully examined during treatments of obesity.

건강교육을 포함한 신장운동이 노인의 생리적인 지표와 자가증상 보고 및 운동 자기효능에 미치는 효과 (Effects of Stretching Exercise Included Health Education on Physical Health Index, Self-reported Symptoms, and Self-efficacy of Exercise in Elderly)

  • 김귀분;원정숙;김원옥;현경선;한상숙
    • 동서간호학연구지
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    • 제9권1호
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    • pp.25-34
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    • 2004
  • This was one experimental study, conducted to identify the effects of stretching exercise included health education on physical health index, self-reported symptoms, and self-efficacy of exercise in Elderly. Subjects included 28 women elderly who were residents of H Dong, Dondae moon-Gu, Seoul. The treatment intervention was applied during total 8 weeks as 5 times/week for stretching exercise with 2 times/weeks for health education. Data collection were from February to April, 2004. SPSS Window program was used by aims of this study for data analysis. The results were as following: 1. 75 old age above (39.3%) was the most of age in subjects. None education (42.9%) was the most of subjects in this study. Perceived health state was the most as 71.4% in moderate and good health state. 2. Stretching exercise included health education, significantly effected on the total Cholesterol, HDL-cholesterol, triglyceride (p=.009*; p=.043*; p=.006*). However, the body fat weight was no significantly on the effect of stretching exercise included health education (p=.991). Also, stretching exercise included health education, significantly effected on total self-reported symptoms (p=.001*) with joint pain, joint rigidity, fatigue, indigestion, elimination disorder, and sleep disturbance. However, indigestion (p=.129) was no significantly on the effect of stretching exercise included health education. Self efficacy of exercise (p=.000*) was significantly on the effect. As according to this results, physical health index (total Cholesterol, HDL-cholesterol, triglyceride) and self-reported symptoms (joint pain, joint rigidity, fatigue, elimination disorder, and sleep disturbance) were reduced through stretching exercise included health education. Self efficacy was improved by this exercise program. Therefore, it is confirmed that stretching exercise included health education is an effective nursing intervention for physical, mental, and psychological health management in elderly. Accordingly, authors are proposing that variously effective health management exercise programs must be developed for elderly, at the same time, the application and following up on the programs will be more important in the future.

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유도선수의 성별, 체급 및 연령에 따른 신체적 기능과 심리적 기능의 비교 (The Compare Physical and Psychological Functioning by Sex, Weight and Age in Judo Athletes)

  • 김혜영;정은정;이병희
    • 한국콘텐츠학회논문지
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    • 제20권3호
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    • pp.678-686
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    • 2020
  • 본 연구는 유도선수의 성별, 체급 및 연령에 따른 신체적 기능과 심리적 기능을 비교하기 위해 시행되었다. 연구의 대상자는 고등학생, 대학생, 실업팀 선수 124명이 참가하였으며, 신체적 검사로 무릎기능 검사지, 발목기능 검사지, 허리 검사지를 자기 기술하여 신체적 검사를 측정하고, 심리적 검사로 기분상태 질문지, 운동선수 자기관리행동 질문지, 운동 대처기술 검사지를 측정하였다. 신체적, 심리적 기능의 성별, 체급별, 연령별 기능을 비교한 결과, 성별에 따른 신체적 검사의 결과에서는 무릎과 허리에서 남녀의 차이가 있었고, 심리적 검사에서는 기분 상태 중 활력과 자기관리행동, 스포츠 대처기술에는 차이가 있었다. 체급별 신체적 검사의 결과, 무릎의 통증과 스포츠 항목에서 체급별 차이가 있었고, 심리적 검사의 결과 기분상태는 활력을 제외한 모든 항목에서 체급별 차이가 있었다. 연령별 신체적 검사는 무릎, 발목, 허리에서 연령별 차이가 있었고, 심리적 검사의 결과, 기분상태검사 중 긴장과 활력을 제외한 모든 항목에서 차이가 있었으며, 자기관리행동 중 몸관리 문항에서만 연령별 유의한 차이가 있었다. 본 연구 결과는 향후 유도선수의 성별, 체급 및 연령에 따른 스포츠 상해 관련 훈련 프로그램 및 의학 기술 개발 관련 기초자료로 활용될 수 있을 것으로 예상한다.

여자 청소년의 신체이미지와 식사태도가 우울감과 자살사고에 미치는 영향 (Effect of Body Image and Eating Attitude on Depressive Mood and Suicide Ideation in Female Adolescents)

  • 송만규;하지현;박두흠;유승호;오정현;유재학
    • 정신신체의학
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    • 제18권1호
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    • pp.40-47
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    • 2010
  • 연구목적 : 자기신체상은 자아존중감과 체중조절행위와 밀접한 연관이 있고 특히 여자 청소년에서는 중요한 관련이 있다고 알려져있다. 이 연구는 체질량지수로 측정한 신체이미지와 식이장애와 연관된 비정상식이행동이 우울증과 자살사고에 미치는 영향을 알아보고자 한다. 방 법 : 서울 한 지역의 고등학교 여학생 239명을 대상으로 체질량지수를 측정하고, 청소년을 위한 식이태도검사(Eating Attitude Test for Korean Adolescents), 자아존중감척도, 충동성척도, 벡 우울척도, 벡 자살사고 척도를 시행하였다. 결 과 : 연구대상에서 식이장애 위험군은 총 10%(24명)이었다. 대조군에 비해 우울증상을 강하게 경험하고 있었고 현재 체질량지수와 이상적 체질량지수의 차이가 클수록 우울감, 자살사고, 비정상적 식이행동의 정도가 커지고 자아존중감은 낮아졌다. 그중에서 체질량지수의 차이가 통계적으로 가장 의미있는 예측인자였다. 결 론 : 연구대상군이 전체적으로 정상체중 범위임에도 불구하고, 현재의 체형과 이상적 체형사이의 괴리가 클수록 우울과 자살사고가 컸다. 여자 청소년의 식이장애 발생과 우울, 자살사고의 예방을 위해 체중조절, 정상식이습관에 대한 교육적 접근이 필요하다는 것을 알 수 있었다.

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Intelligent Control by Immune Network Algorithm Based Auto-Weight Function Tuning

  • Kim, Dong-Hwa
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2002년도 ICCAS
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    • pp.120.2-120
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    • 2002
  • In this paper auto-tuning scheme of weight function in the neural networks has been suggested by immune algorithm for nonlinear process. A number of structures of the neural networks are considered as learning methods for control system. A general view is provided that they are the special cases of either the membership functions or the modification of network structure in the neural networks. On the other hand, since the immune network system possesses a self organizing and distributed memory, it is thus adaptive to its external environment and allows a PDP (parallel distributed processing) network to complete patterns against the environmental situation. Also. It can provi..

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