• Korean Journal of Construction Engineering and Management
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• v.25 no.1
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• pp.62-72
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• 2024

Due to the distribution structure of domestic temporary equipment, quality control of temporary equipment is essential because more than 80% of temporary equipment is repeated and reused. Due to this importance, the Ministry of Land, Infrastructure and Transport has proposed quality management standards for temporary equipment for 10types of temporary equipments, including steel pipe support, but the overall quality of temporary eqipment cannot be confirmed because the quality is managed through sampling quality tests. In addition, although quality control standards exist for temporary material rental company, practical utilization was investigated and analyzed to be very low as they are mainly presented based on qualitative inspection standards by visual inspection. Therefore, the purpose of this study is to develop individual temporary material/quality/delivery management standards (Guides) for temporary equipment rental company to preemptively secure the quality of temporary equipment before bringing them into the construction site. If the standards developed through this study are applied to domestic temporary equipment rental companies, it is expected that high-quality temporary equipment with secured quality will be brought into the construction site as the quality of temporary equipment quality of domestic medium and small temporary equipment rental companies is improved safety accidents related to temporary structures.

• Korean Journal of Social Welfare Studies
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• no.39
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• pp.287-314
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• 2008

This paper tests the stigma hypothesis and administration hypothesis on the illegal take-up group and non take-up group in the National Livelihood Security Program. A set of survey data, using multinomial logistic model, was analyzed for this purpose. Compared with the legal take-up group, the feature of illegal take-up group which has more workable household supports the administration hypothesis - the low skill of means-test office would increase the possibility of benefit fraud. The features of non take-up group support both the stigma hypothesis - the stigma prevents eligible person from participating in the social assistance program, and the administration hypothesis - the administration office is apt to make error to deny the eligibility of person who has supposed family supporters.

• The Korean Journal of Financial Management
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• v.11 no.2
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• pp.65-81
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• 1994

주식의 기대수익률과 체계적 위험과의 관계를 설명한 자본자산가격결정모형(CAPM)은 지난 30년간 많은 재무학자들에 의해 지속적으로 검증 받아 왔다. 물론, 자본시장의 효율성도 포함된 결합가설(結合假說)(joint hypothesis)의 검증이라는 어려운 점도 있으나, 일련의 연구는 기존에 발견된 주가이례(株價異例)현상을 설명하기 위해 새로운 위험 변수가 필요하다고 지적하였다. 이러한 방향으로의 연구 중 차별정보가설은 투자분석에 이용 가능한 정보의 양(量)이 위험측정의 불확실성을 결정하므로 주식의 수익률도 따라서 변하게 된다고 설명하고 있다. 본 연구는 기업의 다각화가 진행됨에 따라 각 사업단위의 회계정보 및 소속산업의 자료수집을 통한 정보의 양이 증가된다는 가정아래 차별정보가설을 실증 분석한다. 기업규모를 통제하여 구성한 포트폴리오 분석 방법은 다각화지 수가 낮은 기업이 체계적으로 높은 초과수익률을 갖는 것으로 나타났다. 이 분석결과는 차별정보가설이 예 상하는 바와 일치하는 결과로 해석될 수 있다. 그러나, 기업규모의 통제없이 구성한 다각화 포트폴리오의 분석결과와 개별기업 차원의 회귀분석 결과는 초과수익률과 기업의 다각화 정도가 선형 관계가 아닌 U자형의 관계에 있다는 것을 보여주고 있다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.11a
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• pp.372-375
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• 2006

건설 공사장에서 발생하는 건설장비의 소음을 저감하여 공사장 인근 지역의 생활환경에 미치는 소음영향을 최소화할 수 있도록 건설업체에서는 최대한의 노력으로 가설방음벽을 설치 운영하고 있으나, 설치된 가설방음벽의 효과분석 및 운영방법에 대한 검토가 부족하여 효율적인 소음저감대책으로서의 가설방음벽 운영이 어려운 실정이다. 따라서, 본 연구에서는 가설방음벽의 기초데이터의 확보와 소음해석을 통한 효율적인 운영방안을 제시하며, 설치기준에 관한 방안을 제시하고자 한다.

• Proceedings of the Korean DIstribution Association Conference
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• 2003.05a
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• pp.189-213
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• 2003

본 연구는 최근 수요환경의 변화를 겪고 있는 항공사-여행사 관계를 중심으로 영향력 관계, 거래 집중화, 영향전략 등에 대하여 검토하고 있다. 항공권 판매 시장의 수요환경은 최종고객 중심으로 전환되고 있다. 이러한 환경적 변화는 항공사 유통역량 평가에 부정적인 영향을 주고 항공사의 낮아진 영향력은 여행사의 거래 집중화 경향을 감소시킬 것이라는 가설을 수립하였다. 추가하여 최종고객 중심의 수요환경 변화가 경로 구성원 상호 영향전략에 미치는 영향에 대해 가설을 수립하였다. 즉 영향력 관계가 비대칭적인 상황에서도 수요환경이 최종고객 중심으로 전개된다면 항공사의 영향전략에 대해서 여행사는 동일한 영향전략을 수행한다는 가설을 수려하였다. 그리고 항공사의 영향력과 여행사의 거래 집중화 관계에 경로 내 영향전략 유형에 따른 조절 효과를 가설화 하였다. 결과는 대체로 기대했던 가설이 채택되는 방향으로 나타났다. 그러나 비강압적 전략의 사용과 관련된 두 가지 가설은 기각되었다.

• Culinary science and hospitality research
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• v.15 no.3
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• pp.139-152
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• 2009

This Study is an analysis on the effects of relational factors(shared transformational leadership) among leadership, employees' job satisfaction and customer orientation. To accomplish this, it was determined that the analysis derived from a hypothesis and literature reviews and data collected from 322 F&B employees of five-star hotel in Seoul. The collected data has been analyzed by SPSS 14.0. and results were as follows. First, transformational leadership(charisma, individual consideration, intellectual stimuli) would affect job satisfaction, It was found that charisma had a positively significant effect on job satisfaction alone while individual consideration and intellectual stimuli had a positively significant effect on job satisfaction. Second, job satisfaction would affect customer orientation, It was found to have a positively significant effect on the relations with customer orientation. Based on the results of this study, suggestions about hotel managers' transformational leadership, employees' job satisfaction and customer orientation were made.

• Korean Journal of Construction Engineering and Management
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• v.15 no.4
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• pp.77-85
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• 2014

A construction temporary work is main process and importance trade section. It has many works and facilities such as temporary transfer equipments which tower crane, and lift, and architectural temporary facilities which temporary office, temporary warehouse, and site test laboratory, and construction temporary equipments which scaffoldings, work plates, construction supports, and forms to set and to use in under construction and to remove in the end. A technology system of construction temporary has very low availability of field works and needs improvements in Korea as construction site has a quick response about new requirements. This study is organized existing technology systems and new technologies for field works, and developed breakdown structure of construction temporary technologies to be a basic of temporary technologies as review with site managers. For this, it will improve to be a knowledge and information system as a research of a performance and an availability about a construction temporary technology index.

• Journal of Korean Society of Steel Construction
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• v.19 no.6
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• pp.681-693
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• 2007

Construction techniques for continuous steel bridges were applied to steel-concrete double composite box girder bridges. Concrete depth and length at the bottom of the steel box in the negative moment region were determined by plastic moment region and negative moment region of the double composite section, respectively. Construction methods, such as crane lifting method, free cantilever method, and incremental launching method were used for the analysis of the construction stage. Two cases of the construction phase were considered and analyzed for the stress resultant of double composite girders. The behavior of the nose-deck elastic system was examined by three-dimensionless parameters, such as the nose length, the unit weight of the launching nose, and the flexural stiffness of the nose. The adoption of the launching nose has become an effective solution in the incremental launching of steel-concrete double composite box girder bridges.

• Communications of Mathematical Education
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• v.37 no.2
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• pp.199-212
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• 2023

The purpose of this study is to find out whether there is a difference in achievement between blocked practice and interleaved practice according to the difference in domain and type of learning content in mathematics subject, and through this result, it is to confirm whether the effect of interleaved practice in mathematics learning is due to the 'Discriminative-contrast Hypothesis' or the 'Distributed-practice Hypothesis'. Although interleaved practice is more effective than blocked practice, previous studies have not shown consistent results regarding the cause. Therefore, in this study, 103 first-year middle school students were randomly assigned to blocked practice, interleaved practice, remote blocked practice, and remote interleaved practice groups had learning activities over 4 times. The results reveals that the effect of interleaved practice appeared in similar types in the same domain, but the effect of interleaved practice did not appear in different types in different domain. In addition, through this result, it was confirmed that the effect of interleaved practice was due to the 'Discriminative-contrast hypothesis' rather than the 'Distributed-practice hypothesis'. Further research topics were suggested after the issues on the research method and the findings were discussed.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.258-261
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• 2003

Demolition is mort dangerous than construction and causes a lot of harmful environmental factors. But temporary fences used on demolition sites cannot play out their roles of blocking harmful environmental factors or securing stability and work space. They only block the view from the outside. This study begins with the possibility that the temporary fence can be installed prior to demolition. As a preceding step. we performed research on the actual conditions of using it. We then realized that it can be installed according to our research plan. First, we focused on actualizing the integration of temporary fences for demolition and construction. Here are the results of this study. First, we need to grasp the limiting factors of integration. Second, we ought to revise the Korean Architecture Standard Specification. Third, we should prepare against damage and transformation of fences. Finally, we can expect to reduce harmful environmental factors, cut down expenses, improve the working environment and raise the image of demolition by the integration of these fences.