• 제목/요약/키워드: scale-up factor

검색결과 360건 처리시간 0.023초

정서적 자활 성과 지표 도입 연구 : 한국형 고용 희망 척도(Korean Employment Hope Scale: K-EHS) 개발과 타당도 검증 (Development and validation of Korean employment hope scale(K-EHS) as a evaluation tool for self-sufficiency programs)

  • 최상미
    • 사회복지연구
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    • 제48권2호
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    • pp.97-119
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    • 2017
  • 본 연구는 미국 자활 영역에서 아래로부터 위로의 '이용자중심(client-centered)' 접근을 통해 개발되어 사용 중인 '정서적 자활 성과 지표(Psychological Self-Sufficiency: PSS)'의 한국에의 적용 가능성을 탐색하기 위해, 한국 자활 프로그램 참여자를 대상으로 척도 타당성 검증을 실시한다. 자활사업은 전통적으로 '경제적 자활'에 초점을 두고 자활사업의 궁극적 목표인 경제적 성과에\만 집중함으로써, 자활사업 참여자의 정서적, 사회적 변화를 간과해왔다. 본 연구는 자활사업의 성과를 제고하기 위해서는 기존의 경제적 측면에서의 접근 뿐 아니라 정서적 측면에서의 접근 또한 필요함을 제안하며, 자활사업 참여자들의 정서적 변화에 초점을 둔 고용희망 척도(employment hope scale: EHS)의 타당도를 검증한다. 그 결과, 4차원 17문항으로 구성된 한국형 고용희망 척도의 타당성이 검증되었다. 본 연구는 정서적 자활 정도를 측정할 수 있는 성과지표로서 한국형 고용희망 척도의 활용가능성을 검증함으로써, 경제적 자활 성과 지표를 보완할 수 있는 보완적 과정 평가 도구로서의 적용 가능성을 제안한다.

축소모델 철근콘크리트 보의 휨부착거동에 있어서의 상사성 (Similitude in Flexural Bond Behavior of Small-Scale Reinforced Concrete Beams)

  • 이한선;고동우
    • 콘크리트학회논문집
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    • 제11권3호
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    • pp.47-57
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    • 1999
  • The small-scale models have been utilized for the prediction of inelastic behavior of reinforced concrete structures for several decades. The parameters that affect the similitude between the model and prototype are various. Among them, the effect of bond between the model reinforcement and the model concrete is one of the most important factors. The study reported herein is addressed to verifying this similitude in bond behavior. The simple beams which have the lap splice at the midspan were made and flexural tests were performed under two-point loading. The length of lap splice are varied from 0.4ld through 0.7ld and up to 1.0ld where ld is the development length of the reinforcement. The selected scales are 1/1, 1/5, 1/10 and 1/12. Two prototype specimens and three models were tested in addition to the associated material tests and the test results are compared from the viewpoint of similitude.

마이크로 UV 성형을 통한 초소형 광픽업용 마이크로 미러 어레이 제작 (Fabrication of micro mirror array for small form factor optical pick-up by micro UV-molding)

  • 최용;임지석;김석민;손진승;김해성;강신일
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2005년도 춘계학술대회 논문집
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    • pp.47-50
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    • 2005
  • In this study, micro mirror array for small form factor optical pick-up was replicated by micro UV-molding. First, mold for micro mirror array was fabricated using micromachining. Also, to analyze the characteristics of the surface quality, flatness of replicated mirror surface were measured by white light scanning inteferometry system. The results show that the micro mirror array with a sufficient surface quality can be obtained by polymer replication process.

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Methyl Ricinoleate로부터 Methyl Undecenoate를 생산하는 열분해반응에서 온도의 최적화 및 스케일·업 (Temperature Optimization and Scale-up for the Production of Methyl Undecenoate from Methyl Ricinoleate by Pyrolysis Process)

  • 김현수;송효순;김호중;김원호;허병기
    • 공업화학
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    • 제16권3호
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    • pp.403-407
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    • 2005
  • 피마자유에서 얻어지는 methyl ricinoleate로부터 탈취 및 항균능력이 우수한 methyl undecenoate를 생산하는 열분해반응을 수행하였다. 이때의 수율은 주입한 methyl undecenoate의 생산수율이 가장 높은 최적예열온도와 최적열분해온도는 각각 $500^{\circ}C$$590^{\circ}C$이였으며, 이때의 수율은 주입 methyl ricinoleate 대비 46%이였다. 또한 이 최적온도를 기반으로 하고, methyl undecenoate 수율을 46%로 유지시키는 스케일 업 실험에서 연료주입속도를 스케일 업 인자로 하였을 경우, 부피가 18배 스케일 업된 반응기에서 약 20배 이상으로 연료주입속도를 스케일 업 할 수 있었다.

정신과 근무 간호원의 정신질환 및 정신질환자에 대한 태도 연구 (A Study of the Attitudes of Psychiatric Registred Nurses towards Mental illness and Mental Patients)

  • 김향미
    • 대한간호학회지
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    • 제12권1호
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    • pp.13-24
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    • 1982
  • The main purpose of this study was to investigate attitudes toward mental illness and the mentally ill of psychiatric nurses in Korea and to identify the relationships between the nurses' attitudes and demographic variables. Subjects in this study were 122 psychiatricnurses and 111non-psychiatric nurses in active service at 12 hospitals in Seoul. The insrtument used for measuring attitudes was a questionaire developed by Cohen and Struening (1962) referred to as the“Opinions about Mental illness(OMI) Scale”made up to 51 Likert-type items. The findings of this study indicated hatnurses showed negative attitudetoward mental illness and the mentally ill: Very high on social restrictiveness (factor D), low on Mental Health Ideology (factor C), and Interpersonal Etiology (factor E). Since the high score on Factor A, B and the low score on Factor B, C, E reflect a negative altitudes toward mental illness, this study population related extremely negative attitudes compared to any other surveys. And of the demographic variables that related to their attitudes the education degree and the kind of the hospital in active service showed very significant differences. On the basis of the investigation the findings indicated the followings; 1) Althohg attitudes toward mental illness and the mentally ill of psychiatric nurses were not significant differences from non-psychatric nurses, there was a trend that attitudes of psychaitric nurses did show more negative responses rather than those of non-psychiatric nurses. 2) Demographic variables that relate to their attitudes on the OMI scale were the education degree of the respondent and the kind of their hospital in active service. 3) About attitudes toward mental illness and the mentally ill baccalaureate nursesshowed more positive attitudes in Factor A (Authoritarianism), Factor C (Mental Health Ideology) and Factor D (Social Restrictiveness) than diploma program murses. 4) Nurses in active Service in the private hospital revealed more positive attitudes(A,B,C,D) except Factor (E) than those in the national or public hospital. 5) The ages, duration of work, wanted or unwantedG roup of psychiatric ward and satisfactory level of psychiatric nursing service were non-significant.

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모유수유 적응 측정 도구 개발 (Development of a Breast Feeding Adaptation Scale (BFAS))

  • 김선희
    • 대한간호학회지
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    • 제39권2호
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    • pp.259-269
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    • 2009
  • Purpose: The aim of this study was to develop a breast feeding adaptation scale (BFAS) to evaluate adaptation to breastfeeding for breastfeeding mothers and their infants and to test the validity and reliability of the instrument. Methods: The study was conducted as follows: application of the conceptual framework, identification of the content domains, items generation, and test of validity and reliability. In order to test validity and reliability, two panels of experts reviewed items and subcategories of the preliminary questionnaire and then data were collected from 329 mothers who were up to 4 weeks postpartum and breastfeeding. Descriptive statistics, t-test, factor analysis, and Cronbach's alpha were used to analyze the data. Results: The conceptual framework was based on the Roy adaptation model. The content domains were developed via literature review, review of instruments, and data acquired from the interviews of breastfeeding mothers and nurses. A total of 69 items belonging to 8 domains were generated. A reduction to 44 preliminary items was accomplished through content validity analysis. Factor analysis extracted 8 factors with a total of 27 items on a 5-point Likert scale. Content validity, construct validity, criterion validity, and reliability of the BFAS were established. Conclusion: The newly developed BFAS is a reliable and valid instrument with which the adaptation of breastfeeding mothers and their infants to the breastfeeding behavior can be evaluated.

Spent fuel simulation during dry storage via enhancement of FRAPCON-4.0: Comparison between PWR and SMR and discharge burnup effect

  • Dahyeon Woo;Youho Lee
    • Nuclear Engineering and Technology
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    • 제54권12호
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    • pp.4499-4513
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    • 2022
  • Spent fuel behavior of dry storage was simulated in a continuous state from steady-state operation by modifying FRAPCON-4.0 to incorporate spent fuel-specific fuel behavior models. Spent fuel behavior of a typical PWR was compared with that of NuScale Power Module (NPMTM). Current PWR discharge burnup (60 MWd/kgU) gives a sufficient margin to the hoop stress limit of 90 MPa. Most hydrogen precipitation occurs in the first 50 years of dry storage, thereby no extra phenomenological safety factor is identified for extended dry storage up to 100 years. Regulation for spent fuel management can be significantly alleviated for LWR-based SMRs. Hydride embrittlement safety criterion is irrelevant to NuScale spent fuels; they have sufficiently lower plenum pressure and hydrogen contents compared to those of PWRs. Cladding creep out during dry storage reduces the subchannel area with burnup. The most deformed cladding outer diameter after 100 years of dry storage is found to be 9.64 mm for discharge burnup of 70 MWd/kgU. It may deteriorate heat transfer of dry storage by increasing flow resistance and decreasing the view factor of radiative heat transfer. Self-regulated by decreasing rod internal pressure with opening gap, cladding creep out closely reaches the saturated point after ~50 years of dry storage.

비만클리닉에 내원한 여성의 심리적 특성 (The Psychological Characteristics of Women in the Obesity Clinic)

  • 박샛별;연규월;우행원
    • 정신신체의학
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    • 제11권2호
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    • pp.137-148
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    • 2003
  • 연구목적: 비만클리닉에 내원한 여성들을 대상으로 식이제한 태도 및 우울증상, 스트레스 등 심리적인 문제들에 대한 특성을 파악하고 비만과의 상관관계를 조사하고자 본 연구를 시행하였다.방 법: 2001년 5월 한 달 동안 아주대학교병원과 서울 시내에 소재한 비만 클리닉에 내원한 여성 150명을 대상으로 사회인구학적 특성 및 신체적 특성, Three Factor Eating Questionnaire, Symptom Check List-90-R(SCL-90-R), 스트레스 인지척도 등을 설문 조사하였고 저자가 Hamilton Depression Rating Scale를 측정하였으며, 이 중 설문지의 답을 충실히 기입한 116명을 대상으로 하였다. 결 과: 연구대상 중 체질량지수 $25.0kg/m^2$ 이상인 비만군은 50.0%였으며, 연령이 증가함에 따라 체질량지수가 증가하였다(p<0.001). 정상이하 체중군에서 미혼인 경우가 48.8%로 비만군 13.8%에 비해 유의하게 높았으며(p<0.01), 흡연률 및 음주율과 체질량지수와는 유의한 관계가 없었다. Three Factor Eating Questionniare는 체질량지수와 체지방과 비교해 볼 때 유의한 차이를 보이지 않았으나, Factor 2(Disinhibition)와 Global Severity Index(r=0.27, p<0.01), Factor 3(Hunger)과 Global Severity Index(r=0.24, p<0.01)와는 각각 유의한 상관관계가 있었다. 체질량지수에 따른 Symptom Check List-90-R의 각 증상척도는 편집증 척도만이 과체중군과 비만군 간에 통계적으로 유의한 차이가 있었다(p<0.05). 대상군 모두 Symptom Check List-90-R의 전체 척도가 50점 이하였으나 각 증상척도는 정상이하 체중군과 비만군이 과체중군에 비해 높은 경향이 있었다. Global Severity Index와 Hamilton Depression Rating Scale(r=0.75, p<0.01), Global Severity Index와 스트레스 인지척도(r=0.32, p<0.01) 간에 각각 유의한 상관관계가 있었다. Hamilton Depression Rating Scale를 체지방 정도에 따라 정상군과 비만군 두 군으로 나누어 비교한 결과 비만군에서 우울증상이 유의하게 높았다(p<0.05). 스트레스의 정도는 체질량지수 및 체지방과 유의한 차이가 없었고 대상군 모두 높은 스트레스를 느끼고 있는 것으로 나타났으며, 스트레스 인지척도가 Factor 2(r=0.29, p<0.01) 및 Factor 3(r=0.37, p<0.01)과 유의한 상관관계가 있는 것으로 보아 스트레스가 식이제한 태도에 영향을 미치는 것으로 생각된다. 또한, 스트레스 인지척도가 Symptom Check List-90-R 중 우울척도, Global Severity Index 및 Hamilton Depression Rating Scale와도 유의한 상관관계가 있는 것으로 보아 스트레스가 심리적인 특성에 영향을 미치는 것으로 생각된다(r=0.33, r=0.32, r=0.34, p<0.01). 결 론: 비만한 사람들은 우울을 비롯한 심리적 고통을 더 많이 가지며 스트레스 점수가 높고, 이는 식이제한 태도와도 관계가 있을 것으로 생각된다. 향후 비만클리닉을 방문하는 사람들의 정신과적 문제에 대한 적극적인 평가 및 정신과적 개입이 필요할 것으로 생각된다.

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Effect of Multi-Layer Carbon Fiber Sheet Used for Strengthening Reinforced Concrete Beams

  • You Young-Chan;Choi Ki-Sun;Kim Keung-Hwan
    • 콘크리트학회논문집
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    • 제17권1호
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    • pp.149-155
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    • 2005
  • The purpose of this study is to investigate the flexural strengthening effects of CF(Carbon Fiber) sheet for the full-scale RC beams with multi-layer CF sheets. The partial strength reduction factors of CF sheets are suggested from the full-scale RC beams tests strengthened with multi-layer CF sheets up to six layers as well as material tests. From the material tensile tests, it was observed that the average tensile strengths of CF sheets per layer are decreased as the number of CF sheets is increased. Also the steep strength reductions of CF sheets in material test results at rupture are observed compared with the structural tests results for the full-scale RC beams strengthened with multi-layer CF sheets. Finally, the partial strength reduction factors far CF sheets up to six layers are suggested considering the effects of multi-layer and unit weight of CF sheets.

축소모형을 이용한 분할형 유리 투과체 창호시스템의 채광성능실험 (Scale Model Experiment on Daylighting of Differentiated Glazing System)

  • 정인영;김정태
    • KIEAE Journal
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    • 제4권4호
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    • pp.61-68
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    • 2004
  • Daylight is a critical factor in architecture, as it helps enhance the working efficiency and pleasantness of the people working inside, in addition to reduce the power consumption in heating and cooling and make the interior space brighter. There are many kinds of glazing and daylighting systems. At present, research and efforts for their development are carried out, alongside quantitative evaluation. This study aims to present basic materials to be used to design proper glazing and daylighting systems in architecture based on a quantitative evaluation by scale models of existing office buildings. The result of the study can be summarized as follows. 1)As a result of the experiment, it appeared that the ratio of the interior illumination (i.e. at the working table, ceiling and wall) against the outdoor illumination increases at a constant rate, as the transmittance of the glazing goes up. 2) It was found that the SIR(Sunlight Illuminance Ratio) of a separated window system goes up by 20-50% at the rear part than in the case of an ordinary window system.