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안승재,차주희,유세은,전한용,Ahn, Seung Jae,Cha, Ju Hee,Yoo, Se Eun,Jeon, Han Yong 한국섬유공학회 2016 한국섬유공학회지 Vol.53 No.5
In order to minimize settlement of a shallow foundation, a model test is performed using geogrids for reinforcement. The optimal reinforcement is found by varying reinforcement length and changing reinforcement layer. From the test results, it is inferred that 2 layers and 4 times the foundation length is the most effective reinforcement condition obtained using geogrids. As a result of this tendency, 2 layers-4 times and 2 layers-5 times conditions are used to determine the reinforcement effect of two types of geogrids with the same tensile strength and of a single type of geogrid but with two tensile strengths. The reinforcement effect of the welded type is less than that of warp-knitted type. It can be seen that frictional resistance is developed at the soil-geogrid rib interface; therefore, the reinforcement capacity is reduced. It is inefficient to use reinforcement of high tensile strength under conditions of allowable bearing capacity, but it is necessary to choose reinforcement of suitable tensile strength under conditions of ultimate bearing capacity.
진공압밀 공법용 등방성 스펀본드 지오텍스타일의 성능평가
안승재,김진일,복진선,이현석,전한용,Ahn, Seung Jae,Kim, Jin Il,Bok, Jin Seon,Lee, Hyun Seok,Jeon, Han-Yong 한국섬유공학회 2014 한국섬유공학회지 Vol.51 No.4
In this study, the performance of isotropic spunbonded geotextiles, which are used in vacuum consolidation, was tested both in the laboratory and in the field. Two kinds of isotropic spunbonded geotextiles were prepared. One was a matrix/binder structure using low-melting polyethylene terephthalate (PET) copolymer (co-PET) fibers for web bonding. The other consisted of sheath/core (co-PET/PET) fibers. Through the index test, it was seen that the performance of the sheath/core structure isotropic spunbonded geotextiles was better for use with vacuum consolidation than the matrix/binder structure isotropic spunbonded geotextiles. However, the drainage performance test, which simulates a construction environment, showed that the sheath/core structure isotropic spunbonded geotextiles were unstable. The matrix/binder isotropic spunbonded geotextiles showed better results for the drainage test and the field test results for the matrix/binder isotropic spunbonded geotextiles showed that they were suitable for use with vacuum consolidation.
직포 지오텍스타일의 투수성에 미치는 기공구조의 영향 분석
안승재,정구,유중조,김의화,김홍관,전한용,Ahn, Seung Jae,Jung, Koo,Yuu, Jungjo,Kim, Eui Hwa,Kim, Hong Kwan,Jeon, Han-Yong 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.6
In this study, three-dimensional woven geotextiles with special cords were fabricated using different yarns, and then, the effect of pore structure on the water permeability of these geotextiles was evaluated and analyzed. Weft overlapping structure might have resulted in increased water permeability by creating channels for the fluid to flow. When multifilaments are used, the woven geotextiles exhibit poor air and water permeability despite the large AOS (apparent opening size). This phenomenon is attributed to the spreading of multifilaments by compression. In comparison, the split yarn showed the better air and water permeability under identical conditions. For improving the mechanical properties, it is recommended the higher denier split yarn need to be used for the better water permeable property.
청년가구주의 주거취약성 실태와 그 요인에 관한 연구: 거주지역과 고용상태를 중심으로
안승재,송치호 한국사회복지연구회 2023 사회복지연구 Vol.54 No.4
This study aims to conceptualize and measure housing vulnerability among young adult householders aged 18-34, with a focus on ensuring their housing rights. Using data from the 2021 Korean Housing Survey, the rate of experiencing housing vulnerability was estimated. Binary logistic regression analyses were conducted to examine disparities in housing vulnerability two residential areas (Seoul-metropolitan or not), as well as across five employment statuses controlling for other relevant factors. Results indicate that for young adult householders, the effects of residential area and employment status on housing vulnerability were statistically significant. These findings highlight the critical importance of providing more comprehensive and systematic public services related to housing to actively guarantee the housing rights of young adults in Korea. 본 연구는 청년 주거권 보장의 관점에서 청년가구주의 주거취약성을 개념화⋅측정하고, 주거취약성 관련 요인들을 거주지역과고용상태를 중심으로 분석하는 것이 목적이다. 이 연구에서 청년가구주의 주거취약성은 주거권이 보장되었다고 간주될 만큼 적절한주거에 놓이지 못한 상태로 정의했다. 구체적으로 해당 청년이 거주하는 주택이 최저주거기준에 미달하거나 주거비를 과중하게 부담하는경우 주거취약성이 있다고 정의했다. 특히 본 연구는 주거취약성을 측정할 때 최저주거기준 중 환경 기준을 확장했다는 점에서 기존연구와 차별성을 갖는다. 이 연구는 2021년 주거실태조사 자료와 이항 로지스틱 회귀분석을 이용하여 청년가구주의 주거취약성이중장년⋅노인가구주보다 높은지 그리고 청년가구주가 주거취약성을 경험할 가능성이 거주지역과 고용상태에 따라 다른지 검토했다. 분석결과는 첫째, 청년가구주의 주거취약성 경험은 중장년⋅노인가구주보다 높음을 확인했다. 둘째, 청년가구주의 주거취약성 경험은다른 요인들을 통제할 때 거주지역과 고용상태에 따라 통계적으로 차이가 있음을 확인했다. 청년가구주의 거주지역이 수도권이고, 고용상태가 상용직 근로자가 아닌 고용원 없는 자영업자⋅무급가족종사자, 미취업자면 주거취약성을 경험할 가능성이 높았다. 이러한연구결과는 청년 주거권 보장을 위해 수도권에 거주하는 불안정 고용상태에 놓인 청년들에게 주거 관련 포괄적⋅체계적⋅보편적 서비스지원이 필요함을 시사한다.
가족정책의 다차원적 효과 -가족정책과 가치관의 상호작용효과를 중심으로-
안승재 ( An Seungjae ) 한국가족사회복지학회 2021 한국가족복지학 Vol.68 No.2
본 연구는 성역할인식 및 가족책임의식과 가족정책이 가족생활만족도에 미치는 영향을 실증적으로 밝히고 가족정책의 목표를 점검하고자 한 연구이다. 가족은 우리의 삶의 질에 있어 중요한 역할을 함에도 가족 삶의 질과 관련된 연구들은 개인적 요인을 중심으로 이해되는 한계를 가지고 있다. 또한, 가족정책에 관한 선행연구들은 주로 공적영역, 그중에서도 노동시장과 경제적 불평등 등 경제적 지표에 관심을 기울이고 있고 사적영역인 가족 삶의 질에 대한 연구는 거의 이루어지지 않고 있는 상황이다. 본 연구에서는 이러한 연구들을 통합하여 이해하기 위하여 다층분석을 활용하였다. 연구 결과 서비스 정책이 가족생활만족도를 높여주고 있으며 보다 평등한 국가에서 가족생활만족도가 높은 것으로 나타났다. 현금 정책의 경우 평등한 사회에서는 부적으로 나타났으나 시간 정책의 효과는 보다 평등한 사회에서 더 크게 나타나고 있는 것으로 나타났다. This study aims to explore the effects of gender roles, family responsibility the and family policy on family life satisfaction and check the purposes of family policy. Family plays an important role in our quality of life, studies related to the quality of family life have limitations to be understood centering on individual factors. In addition, prior studies on family policy are mainly concerned with economic indicators such as the public sector, especially the labor market and economic inequality. And studies on the quality of family life are rarely conducted. This study used multilevel linear probability model to analyze the International Social Survey Programme 2012(ISSP) database. This study included 11,275 respondents aged 20 to 45 from 22 countries excluding missing values such as no response. Results show that the service policy improves the family life satisfaction, and family life satisfaction is high in more equal countries. The negative effect of cash policy appeared to be greater in a more equal countries, but the effect of time npolicy appeared to be greater in a more equal society.
배수용 지오텍스타일의 환경노출조건에 의한 지속가능형 적용성 평가
안승재(Seung-Jae Ahn),오형선(Hyung-Sun Oh),이아람(A-Ram Lee),한지연(Ji-Yoen Han),전한용(Han-Yong Jeon) 한국지반신소재학회 2012 한국토목섬유학회 학술발표회 Vol.2012 No.11
In this study, PET spunbonded nonwoven geotextiles were used as filter media of PVD(Prefabricated Vertical Drainboard). 3.5% NaCl solution as an artificial seawater was applied to examine the long-term strength retention and reduction factor was determined from strength retention. Arrhenius models is applied to evaluate sustainable applicability of PET spunbonded nonwoven geotextiles at 25℃ is predicted.