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공기량, 함수율 및 PP섬유 혼입률 변화에 따른 고성능 콘크리트의 폭렬 특성
허영선 ( Heo Young-sun ),송용원 ( Song Yong-won ),김호림 ( Jin Hu-lin ),이보형 ( Lee Bo-hyeung ),양성환 ( Yang Seong-hwan ),한천구 ( Han Cheon-goo ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.2
The objective of this work is to investigate spalling properties of 60MPa class, high performance concrete, made with various air, moisture and polypropylene(PP) fiber. The experiment was conducted with diverse parameters, such as one specimen with control, three specimens with target air content and three specimens with curing conditions. In addition, those specimens are also designed with various adding ratios of PP fiber. A fire test was carried out for one hour, after that, spalling appearance, spalling degree and residual compressive strength were examined. The test showed that most specimens containing 0.05 percent of PP fiber had fourth level of spalling degree which is hard to compare, due to the severe spalling occurrence. However, H-air specimens, containing lots of air, and D-cur specimens, dried fully in oven, had first level of spalling degree, thus resisting spalling occurrence. Those indicated 34 and 24 percent of residual compressive strength and these were also effective at increasing fiver content.
예비 가정과교사의 소비생활 교육내용 요구도 분석 : 중요도와 실행도 분석을 중심으로
허영선(Heo, Young-Sun),김남은(Kim, Nam eun) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.19
이 연구는 A, B대학교 가정과교육과 1,2,3,4학년 총 85명을 대상으로 소비생활교육에 대한 인식과 중요도와 실행도의 수준 차이를 통해 요구도를 살펴보기 위하여 대응표본 t-검증, 보리치(Borich) 요구도, The Locus for Focus Model을 활용하여 분석하였다. 연구 결과, 첫째, 예비 가정과교사들은 소비생활교육을 필요하다고 인식하고 있었다. 둘째, 예비 가정과교사들은 소비생활교육이 중요하다고 생각하나 실행도는 이에 미치지 못했다. 셋째, 보리치 요구 조사 결과, 요구도가 가장 높은 하위 요소는 고객여정, 소비자 신용, 가계 자산관리, 소비자 관련 법규와 제도, 소비정체성 순이었으며, Locus for Focus Model 분석 결과 집중 영역에서 최우선으로 고려해야 할 필요성이 있는 소비생활 영역은 가정경제의 이해와 재무관리, 소비자문제해결, 소비자운동과 소비자주의이다. 모든 학년에서 최우선 순위는 가계 자산관리이며, 3개 학년에서 최우선 순위는 가계소득 및 지출, 행복한 소비절제이다. This study was analyzed using the response sample t-test, Borich Needs Analysis, and The Locus for Focus Model to understanding needs through the difference in the level of awareness and importance and execution of consumer life education and the subjects of this study were a total of 85 students in the 1st, 2nd, 3rd and 4th grades of the Department of Home Economics Education in A and B universities. As a result of the study, first, preliminary Home Economics teachers recognized that Consumer Life Education was necessary. Second, preliminary Home Economics teachers think that Consumer Life Education is important, but the degree of implementation has not been reached. Third, as a result of the survey on the Borich Needs Analysis, the sub-factors with the highest demand were in the order of customer journey, consumer credit, household asset management, consumer-related laws and regulations, and consumption identity. As a result of the Locus for Focus Model analysis, the Consumer Life Areas that need to be considered first in the focus area are understanding of the family economy and financial management, consumer problem solving, consumer movement and consumerism. The top priority in all grades is household asset management, and the top priority in the three grades is household income and expenditure, and happy consumption restraint.
내화 마감재 종류에 따른 고성능 RC기둥의 폭열방지 및 온도이력 특성
허영선 ( Young-sun Heo ),김기훈 ( Ki-hoon Kim ),이진우 ( Jin-woo Lee ),이보형 ( Bo-hyeung Lee ),이재삼 ( Jae-sam Lee ),한천구 ( Cheon-goo Han ) 한국건축시공학회 2005 한국건축시공학회 학술발표대회 논문집 Vol.5 No.1
High Performance Concrete(HPC) has been widely used in high-rise building. The HPC has several benefits including high strength, high fluidity and high durability. However, spalling is susceptible to occur in HPC and HPC also tends to be deteriorated in the side of fire resistance performance at fire. This paper focuses on the analysis of the temperature history and residual compressive strength with finishing material, in order to protect HPC from sudden-high-temperature, which is one of the main reason spalling occurs. Test results show that spalling occurs in all specimens. The most serious spalling took placed in HPC covering fire enduring spray-on material, whose covering thickness is 20mm but temperature history indicates that fire enduring spray effectively protected HPC from fire for more than 2hours. In addition, residual compressive strength ratio of HPC using fire enduring paint was more than 90% of original strength, thus minimizing spalling and indicating significant fire resistance performance.
PP 및 PVA 섬유를 혼입한 고성능 RC 기둥의 폭열 방지 특성
허영선 ( Heo Young-sun ),김기훈 ( Kim Ki-hoon ),배연기 ( Bae Yeoun-ki ),지석원 ( Jee Suk-won ),이성연 ( Lee Seong-yeun ),한천구 ( Han Cheon-goo ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.1
This study investigates performance of fire resistance of HPC with the contents of polypropylene(PP) and polyvinyl alcohol(PVA) fiber, respectively. The experimental results shows that increase of fiber contents, regardless of fiber type, exhibited low fluidity and air contents. In the case of compressive strength, on the other hand, all specimen had more than 50MPa of compressive strength. For the properties of spalling appearance, serious spalling failure occurs with plain concrete, which caused exposure of re-bar, while HPC containing fiber had favorable prevention of spalling. Residual compressive strength maintained more than 70 % of original strength, regardless of fiber contents.
허영선 ( Young-sun Heo ),박용규 ( Yong-kyu Park ),김호림 ( Hu-lin Jin ),지석원 ( Suk-won Jee ),양성환 ( Seong-hwan Yang ),한천구 ( Cheon-goo Han ) 한국건축시공학회 2006 한국건축시공학회 학술발표대회 논문집 Vol.6 No.2
This study investigates spalling properties of high performance concrete, 60MPa class, made with the various types of coarse aggregate and adding ratio of polypropylene(PP) fiber. As experimental parameters, totally sixteen specimens of ø100×200mm in size are prepared: one specimen for control without fiber, ten specimens with different coarse aggregate types, along with 0.05, 0.1, 0.15 percent of PP fiber in each. 1 hour fire test is conducted and then spalling appearance, spalling degree and residual compressive strength are examined. In addition, six specimens made with two types of coarse aggregate size, along with same adding ratio of fiber are supplementally done, and only spalling properties is examined. Test results showed that control concrete and most specimens containing 0.05% of PP fiber exhibited 4 to 3 level of spalling degree, resulting severe explosive spalling, except for the specimen using basalt aggregate(Bc) showing 2 to 3 level of that. Especially, the Bc specimen containing 0.1% of the fiber exhibited that residual compressive strength value was 32%, which is 10% higher than other specimens using limestone or granite. Spalling resistance performance was also effective as aggregate size increase.
미국 국가 기준 가정과교육과정에 포함된 세계시민교육 관련 목표와 내용 탐색: ‘세계’관점과 핵심어를 중심으로
허영선(Heo, Young-Sun),김남은(Kim, Nam-Eun),채정현(Chae, Jung Hyun) 한국가정과교육학회 2021 한국가정과교육학회지 Vol.33 No.3
이 연구의 목적은 미국 국가 기준 가정과교육과정(NSFCS 3.0)의 내용 영역 및 역량과 유네스코 세계시민교육(Global Citizenship Education[GCED])의 관련성을 살펴보는 것이다. 이를 위해 NSFCS 3.0 내 ‘세계’ 관점과 내용 영역 및 역량 요소들과 유네스코세계시민교육의 3가지 영역의 9가지 내용 요소의 핵심어를 분석하였다. 구체적으로, NSFCS 3.0의 문서에 기술된 ‘세계’ 관점과 관련된 단어들을 추출하고 그와 연관된 부분의 내용 기준과 역량요소들과 세계시민교육의 주제와 비교한 후, 이 영역의 핵심어와 관련성을 분석하였다. NSFCS 3.0과 유네스코 세계시민교육과의 관련성을 살펴본 결과는 다음과 같다. 첫째, NSFCS 3.0에서는 내용 기준과 역량에서 ‘세계’라는 핵심어를 명시하여 ‘대인관계’, ‘부모됨’ 2개 영역을 제외한 14개영역에서 개인을 세계시민으로 인식하여 개인과 세계와의 직접적인 상관관계를 기술하였다. 둘째, NSFCS 3.0의 내용 기준 및 역량에서 세계시민교육 영역별 학습 주제와 관련된 핵심어는 가정학의 식생활, 가족생활, 인간발달에서는 세 영역 모두 고르게 제시되어 있었으며, 의생활, 주생활, 소비생활에서는 사회⋅정서적 영역이 제시되지 않았다. 반면, 세계시민교육에서 가장 강조하는 행동적 영역은 모든 가정학 영역에 제시되어 세계시민교육을 위한 학습의 장은 가정과교육이 추구하는 삶의 영역으로 볼 수 있다. 이상의 연구결과를 통해 NSFCS 3.0과 세계시민교육을 관련지어 이해하고, 우리나라 차기 가정과교육과정의 개정에 세계시민교육의 내용요소를 어떻게 포함할 수 있는가에 대한 방향을 제시하는 기초자료로 활용할 수 있을 것이다. The purpose of this study is to examine the relationship between the content areas and competencies of the Family & Consumer Sciences National Standards(NSFCS 3.0) of the U. S. and UNESCO Global Citizenship Education(GCED). For this purpose, the global perspective, content areas and competencies in NSFCS 3.0 and the keywords related to the three areas of content areas of UNESCO GCED were analyzed. Specifically, the content standards and competencies related to the words ‘world’ or ‘global’ were extracted and their relationship to t he GCED topics a nd k eywords were a nalyz ed. The results of the study are as follows. First, NSFCS 3.0 described the direct correlation between individuals and the world by recognizing individuals as global citizens in 14 areas except for ‘interpersonal relations’ and ‘parenting’, specifically using the keyword of ‘world’ in content standards and competencies. Second, in the content standards and competencies of NSFCS 3.0, the keywords related to the topics of GCED areas were presented evenly in the three areas of FCS, dietary habits, family life, and human development. The social and emotional areas were not presented in clothing, housing, and consumer life. On the other hand, the behavioral area, which is emphasized most in the GCED, is presented in all the FCS content areas. From this, it is apparent that the learning field for GCED may be considered as the area of life pursued by the home economics curriculum. The results of this study provide foundational bases for understanding the relationship between NSFCS 3.0 and the GCED, and implications as to how to implement the content of the GCED in the next revision of the national home economics curriculum of Korea.
고등학생이 인식한 부모와의 의사소통 및 부모양육태도와 행복
허영선(Young-Sun Heo),이선정(Seon-Jeong Lee),신효식(Hyo-Shick Shin) 전남대학교 생활과학연구소 2009 生活科學硏究 Vol.19 No.-
The purposes of this study were to search the general trend of happiness and the difference in happiness according to social demographic variables, communication with parents and parenting attitude by adolescents. The subjects were the 566 high school students in Gwangju. Data were analyzed with Frequency, Percentage, Mean, Std, T-test, ANOVA, Duncan's test using SPSS/PC WIN 17.0 program. The major findings were as follows: 1. The general trend of adolescents' happiness was higher than middle value. 2. The happiness showed significant difference according to sex, satisfaction of allowance, standard of living, communication with parents and parenting attitude. 3. The outcome of this study can be used as reference in developing efficient counselling programs to help group counselling programs to improve happiness or policy plaining.