• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.427-432
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• 2003

An analytical method to predict the flexural behavior of composite girder is presented in which the early-age properties of concrete are specified including maturing of elastic modulus, creep and shrinkage. The time dependent constitutive relation accounting for the early-age concrete properties is derived in an incremental format by expanding the total form of stress-strain relation by the first order Taylor series with respect to the reference time. The sectional analysis calculates the axial and curvature strains based on the force and moment equilibriums. The deflection curve of the box girder approximated by the quadratic polynomial function is calculated by applying to the proper boundary conditions in the consecutive segments. Numerical applications are made for the 3-span double composite steel box girders which is a composite bridge girder filled with concrete at the bottom of the steel box in the negative moment region. The one dimensional finite element analysis results are compared with those of the three dimensional finite element analysis and the analytical method based on the sectional analysis. Close agreement is observed among the three methods.

• 한국공작기계학회논문집
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• 제12권5호
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• pp.46-52
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• 2003

End-milling have been used widely in industrial system because it is effective to a material manufacturing with various shape. Recently the end-milling processing is needed the high-precise technique with good surface roughness and rapid time in precision machine part and electronic part. The optimum surface roughness has an effect on end-milling condition such as, cutting direction spindle speed, feed rate and depth of cut, etc. Therefore this study was carried out to presume for mutual relation of end-milling condition to get the optimum surface roughness by regression analysis. The results shown that coefficient of determination($\textrm{R}^2$) of regression equation has a fine reliability of 87.5% and regression equation of surface rough is made by regression analysis.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2005년도 추계학술대회 논문집
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• pp.269-272
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• 2005

The purpose of this study is to analyze the relation between the dwelling location and the satisfaction level, and suggest a proposal to increase the quality of the livability space. A first of this study began from public surveys conducted to gather the information of satisfaction level from 4 multi-family housing sites in Gwang-ju. The plan was to the characteristics of the LS(livability space). The poll and the observation investigation was run concurrently. The cross analysis and the frequency analysis were used to analyze the data from the questionnaires. The validity of fixed quantitative index was got through the correlation analysis between the result of former analysis and index of livability space. The result said that the dwelling location have relations with the satisfaction level. In the conclusion, this will be a suggestion of the methods to enhance equal-quality of the livability space.

• 유통과학연구
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• 제10권11호
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• pp.61-70
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• 2012

Purpose - The entry of Super Supermarkets (SSM), operated by large corporations, into the retail distribution market weakens the competitive power of local supermarkets (SM) and their families leading to a rapid collapse of the local-SM market. Accordingly, this is a very sensitive and urgent issue in Korean society and politics. Therefore, the government is required to take steps to activate a local-SM market and regain the loyalty of their customers. However, in spite of the urgent need of a comparative study on the advantages and competitive power of local-SM in relation to the SSM, little research has been done on this issue to date. One purpose of this study is to analyze the differences in store characteristics of the local SM and SSM, and to explore the relationships amongst various store characteristics, such as consumption emotion, relation quality, and store loyalty between store types to provide an efficient solution to activate a local-SM market. Research design, data, methodology - To analyze the differences in the evaluation of store characteristics between store types, and to test the moderator and mediator effects, data were collected from 488 customers in Seoul, Incheon,and Gyeonggi Province. The theoretical model consists of four hypotheses, and data was processed to test these using factor analysis, t-test, regression analysis, hierarchical regression, and the three step regression proposed by Baron and Kenny. Results - First, the analysis shows that local-SM customers evaluate location characteristic factors significantly higher compared to SSM customers. However, SSM customers evaluate quality of merchandise, sales promotion activities, and store environment significantly higher. Yet, there are no significant differences in the evaluation of consumption emotion, relation quality,and store loyalty between the store types. Second, the analysis of moderator effects of the store type show that sales promotion and store atmosphere factors have a significantly negative moderating effecton positive consumption emotion, while positive consumption emotion has a significantly positive moderating effect on absorption of relation quality, while there are no significant moderating effects between consumption emotion and store loyalty. Third, while both trust and absorption of relation quality are partially mediated between consumption emotion and store loyalty, only absorption is partially mediated between positive consumption emotion and store loyalty. There are no significant mediating effects of absorption between negative consumption emotion and store loyalty. Conclusions - We strongly recommend that location restrictions on entrance of SSM into local-SM market should either be further strengthened or sustained for the activation of the local store market. Government should strengthen financial support to improve the quality of merchandise, sales promotion, employee education, store environment of the local-SM by providing appropriate business consulting. Moreover, the result implies that the owners of alocal-SM should take measures to increase customers' absorption and store loyalty, such as store cleanliness, maintaining a delightful atmosphere at the store, and training employees on attitudes towards customers. As this study is restricted within Seoul, Incheon, and Gyeonggi Province, care needs to be taken in generalizing the interpretation and application to the national level.

• 한국사회복지학
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• 제64권4호
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• pp.233-259
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• 2012

최근 고용없는 성장이 목도되는 가운데, 높은 실업률과 낮은 고용률로 압축되는 청년층 고용문제가 상당히 심각하다. 그러나 고령자의 일자리 부족, 불안정한 노동지위도 우리 사회의 중요한 현안이다. 이를 해결하기 위해 중고령자의 일자리 창출, 정년 연장이 논의되고 있지만 세대간 일자리 전쟁으로 비화되며, 청년층의 일자리 창출 정책과의 형평성으로 인해 정책추진에 어려움을 겪고 있다. 그러나 아직 이에 대한 연구가 충분히 축적되지도 않은 상태에서 문제가 진단되고 정책이 수립되는 것은 바람직하지 않다. 본 연구는 이와 같은 문제의식에 따라 한국을 포함한 OECD 15개국(1990~2010년)의 청년 고용과 중고령자 고용이 대체관계인지 분석하였다. 분석결과 첫째, 중고령자와 청년 모두 2명 가운데 1명도 고용상태가 아닌 것으로 나타났다. 고용위기는 특정 세대의 문제가 아니라, 청년층과 중고령층 모두의 문제인 것으로 볼 수 있다. 둘째, 변인간의 관계를 분석한 결과(패널분석), 청년층 고용과 중고령층 고용은 대체관계가 아닌 것으로 나타났다. 조기퇴직정책을 추진해도 청년층 취업문제가 해결되지 않을 수 있음을 시사한다.

• 한국콘텐츠학회논문지
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• 제12권10호
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• pp.128-137
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• 2012

행담도 휴게소 내 충청남도 홍보관은 위치적으로 교통의 요지에 있음에도 불구하고, 홍보의 부족과 주변과의 부조화로 인해 많은 사람이 이용하고 있지 않는 상태이다. 홍보관은 한정된 콘텐츠와 판매장과의 혼합 운영으로 인해 홍보관으로서의 고유한 역할이 미흡한 실정이다. 따라서 충청남도를 알릴 수 있는 새로운 콘텐츠의 개발과 함께 홍보관 내 아이템의 개발이 요구된다. 지역 브랜딩이 지역의 정체성을 명확히 하여 강력하고, 독특한 지역의 이미지를 창출함으로써 지역의 지속가능한 경쟁력을 확보하는 것을 목적으로 한다는 점에서 지역 활성화의 기반이 될 수 있다. 본 연구의 목적은 기존 홍보관의 현황분석과 국내외 유사시설 운영사례에 대한 조사 및 분석, 타 홍보관 성공사례에 대한 요인 분석을 통해 향후 변화방향에 대한 예측을 하고자 한다. 연구진행방법은 방문객을 대상으로 한 설문조사를 통해 문제점과 필요한 요소, 요구사항들을 도출하여 리모델링 기본계획 수립시 반영하도록 한다. 타당성 분석 연구를 통해 제시된 리모델링 기본설계는 1층은 특산물판매장이며 2층은 카페공간과 충청남도 홍보관과 테라피 특산물판매공간으로 구성하였다.

• 한국보육지원학회지
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• 제7권1호
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• pp.93-120
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• 2011

본 연구는 유아교사의 역할을 관계성에 관련하여 구체적 현장을 심층적으로 살펴봄으로써 돌봄과 살핌의 실천이 가능한 유아교사의 역할 특성을 탐색하고 역할 모형을 구성하고자 하였다. 관계라는 특성의 차원에서 나타나는 교사 역할의 구체적 실천 특성을 살펴보기 위해 한국과 일본의 사례를 선정하여 국내외 다각적 현장에서의 실제를 탐색하고자 하였다. 따라서 한국의 유아교육기관으로 M유치원과 P어린이집을 선정하고, 일본의 S유치원과 H보육원을 선정하여 질적연구를 통해 심층적 의미를 분석하였다. 그 결과 한국의 사례를 통해 관계성에 기초한 유아교사의 역할로 나누는 대화로 여는 관계, 감각과 신체를 통한 관계, 알아가는 과정 속의 관계, 의식주 생활에서의 관계라는 4가지 특성을 살펴볼 수 있었다. 일본의 사례를 통해서는 자연물을 통해 맺는 관계, 동등한 참여자로서의 관계, 몸의 움직임으로 갖는 관계, 일상으로 가지는 관계라는 4가지 특성으로 나타났다. 이를 종합하여 관계성 차원에서의 유아교사의 역할을 분석한 결과, 대상 지향적 언어를 통한 관계성, 감각에 기초한 관계성, 생활에 기초한 관계성, 유대감에 기초한 관계성, 생태적 관계성으로 구성하였다.

• 초등상담연구
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• 제7권1호
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• pp.37-66
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• 2008

This study has been carried out with the aims of developing a comprehensive inventory of peer relation problems, which is based on the Korean Inventory of Interpersonal Problems Circumplex scales (KIIP-C). It also aims to examine reliability and validity of the inventory, and provide a preliminary norms. For the current study, inventory items were culled from the following sources: the Korean Inventory of Interpersonal Problems Circumplex scales (KIIP-C), various current scales dealing with peer relations of children, and a survey of children's peer relation problems. The preliminary items for each scale were administered to 220 fourth through sixth graders. The resulting skewness of distribution, kurtosis, mean and standard deviation, item-total correlation, internal consistency, and meanings of the items were comprehensively considered in selecting the final 64 items. In order to check on reliability, internal consistency, convergence and discrimination reliability of the final items and scales, the data were collected from 1,046 fourth through sixth graders currently attending four elementary schools. The study results can be summarized as follows. Internal consistency of the inventory of peer relation problems showed the range between .70-.94 (median value of .75), split-half reliability between .67-.83 (median value of .75), and test-retest reliability between .69-.88 (median value of .81). Inter-correlation of 8 scale scores and factor analysis results of individual ipsative scores showed that the circumplex property of inventory of peer relation problems is appropriate. Regarding correlations between various existing indices and scales related to peer relation problems, both convergence reliability and discrimination reliability were found to be fair. When the scale scores for the inventory of peer relation problems compared according to the factors of gender and grade, the primary effects of gender and grade were statistically meaningful whereas effects of interaction between gender and grade were not. This study can be considered meaningful in that it constructed an inventory for a comprehensive evaluation of peer relation problems specific for children and provided preliminary norms.

• 한국콘텐츠학회논문지
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• 제19권4호
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• pp.63-78
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• 2019

본 연구에서는 은행 PB 이용고객들을 대상으로 PB 관계마케팅과 관계의 질, 그리고 장기적 거래의도 간의 영향관계를 검증하고, 이 과정에서 관계의 질의 매개효과를 검증하였다. 본 연구의 대상은 서울 소재 은행 PB 이용고객 431명으로서, 설문조사자료를 이용하여 구조방정식모형분석을 통해 가설 검증을 수행하였다. 검증 결과, PB 관계마케팅은 관계의 질에 유의한 정(+)의 영향을 나타내었다. 그리고 관계의 질과 장기적 거래의도 간의 경로계수는 정(+)의 관계를 보였다. 한편, PB 관계마케팅은 장기적 거래의도에 직접적으로 영향을 미치지는 않았으며, 관계의 질을 매개로하여 장기적 거래의도 에 유의한 영향을 미치는 것으로 나타났다. 본 연구의 결과는 은행 PB 성과에 있어서, 은행과 고객 간의 관계의 질을 반영하여, 장기적 거래의도에 미치는 영향을 확인하고, 이 과정에서 관계의 질의 효과를 검증하였다는데 의미가 있다.

• 한국세라믹학회지
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• 제33권5호
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• pp.602-615
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• 1996

The purpose of the present study is to investigate the microstructural effect on the R-curve behavior in three aluminas with different grain size distributions by analyzing the bridging stress distribution. The crack opening displacement (COD) according to the distance behind the stationary crack tip was measured using an in situ SEM fracture method. The measured COD values in the fine-grained alumina agreed well with Wiederhorn's sollution while they deviated from Wiederhorn's solution in the two coarse-grained aluminas because of the increase of the crack closure due to the grain interface bridging in the crack wake. A numerical fitting procedure was conducted by the introduction of the power-law relation and the current theoretical model together with the measured COD's in order to obtain the bridging stress distribution. The results indicated that the bridging stress function and the R-curve computed by the current model were consistent with those computed by the power-law relation providing a reliable evidence for the bridging stress analysis of the current model. The strain-softening exponent in the power-law relation n, was calculated to be in the range from 2 to 3 and was closely related to the grain size distribution. Thus it was concluded from the current theoretical model that the grain size distribution affected greatly the bridging stress distribution thereby resulting in the quantitative analysis of microfracture of polycrystalline aluminas through correlating the local-fracture-cont-rolling microstructure.