• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.742-743
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• 2015

Korean construction industry has developed with national economy growth for a couple of decades. However, because of slump of real estate, the domestic construction industry was intimidated. In this situation, many construction company has no choice but to go abroad to find construction projects. However, almost small or medium-sized construction companies are very hard to operate their business because they have small funding ability and weak labor power. Therefore, this study aims to propose an assessment tool through analyzing risk factors of overseas construction projects for small or medium-sized companies by examining preceding research and interviewing industry experts. Weights of the risk factors are determined through the surveys of the industry practitioners. All of the data is configured into the assessment tool and this converts the quantitative information which leads to the optimal of strategies choice. This paper provides a quantitative measurement of possible performance and detailed assessment of each itemized risk factors. This assessment tool is qualified for industry experts so that it can safely be applied to the future projects. Ultimately, many small or medium sized construction companies will benefit from the tool proposed in this study to examine the potential of the overseas market expansion.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.440-444
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• 2015

As domestic construction investment has been gradually reduced, expanding overseas construction is one of the most important issues for Korean construction companies. Among these issues, strategies for overseas CM services have widely been discussed, because the CM services have features of high growth potential and value-added area when compared with other construction sectors. Therefore, recent efforts focus on further development in advanced CM capabilities and expansion to overseas market. However, there has been lack of quantitative research to investigate current status and future direction of CM industry. In this sense, this research investigated what CM has achieved for the past 17years (between 1997 and 2013) and what CM should accomplish for future strategies. The purpose of this research is to statistically analyze total of 2,983 CM service contracts over the past 17 years published in KISCON (Knowledge Information System of Construction Industry) in order to examine current status of CM industry in terms of market type, contract size, commodity type, and owner's type. Based on this research, it is expected to suggest for future strategies and development directions from the CM industry perspective that could provide quantitative analyses, improve current CM statistics systems and strengthen the competitiveness in international CM market.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.308-314
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• 2013

Although global construction spending has experienced slow growth due to consecutive economic crises, global contractors have consistently attempted to expand their overseas market share, leading to more intense competition among contractors in the international construction market. In this market environment, owners, clients and financial institutions require reasonable and systematic criteria to effectively assess the business capabilities of international construction firms. However, the existing evaluation methods for construction firms rarely consider overseas-focused business capabilities. To address this problem, this study proposes a quantitative approach to assessing the overseas business capabilities of international construction firms. The limitations of existing approaches are reviewed, and the capabilities required to perform overseas businesses are analyzed through expert interviews. Finally, 18 evaluation indices are suggested in four categories: technology resources, project management, experience and performance, and sustainability. The relative weight of each index is determined according to the Analytical Hierarchy Process (AHP) method, and a preliminary investigation of 11 Korean construction firms is conducted. The proposed method is expected that it will provide the rational criteria for international owners, clients, and financial institutions for decision-making and for evaluating international contractors.

• 한국건설관리학회논문집
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• 제18권3호
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• pp.3-11
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• 2017

글로벌 금융위기 이후 OECD 국가들의 청년층 평균 고용률은 2007년 54%에서 2013년 50.8%로 낮아졌고, 청년층 실업률은 2007년 9.7%에서 2013년 13.4%로 큰 폭으로 상승하였다. 이러한 추세는 우리나라에서도 청년층 고용률은 2007년 42.6%에서 2015년에 41.5%로 감소하였고, 실업률은 2007년 7.2%에서 9.2%로 증가하였다. 이와 같이 우리나라 뿐만 아니라 세계 각국의 청년 고용률이 저조하여 사회적인 이슈로 부각되고 있다. 앞으로 우리나라의 건설업 투자는 개발성장 위주에서 질적 성장으로 점차 전환될 것이다. 이러한 방향에 따라 건설기술인력의 고용창출과 글로벌 기술인력의 양성이 무엇보다도 필요하다. 본고는 건설기술인력의 현황 및 대학졸업자의 실태를 분석하여 청년 건설기술인력의 일자리 창출방안을 제시하였다. 향후 글로벌 건설기술인력을 양성하기 위해서는 중장기적인 측면에서 인력양성 대책을 수립할 뿐만 아니라, 특히 건설업이 3D(Dirty, Difficult, Dangerous) 산업에서 3C(Clean, Clear, Creative) 산업으로 발전할 수 있도록 이미지 개선과 인프라 구축을 하는 것이 필요하다.

• 대한환경공학회지
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• 제35권4호
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• pp.283-288
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• 2013

침수식물인 Ceratophyllum demersum (C. demersum)의 영양염류 제거 효율과 남조류 성장 억제 능력을 평가하기 위해 총 6개의 반응조에서 9일간 회분식 실험을 실시하였다. 실험이 시작되고 약 84 hr 후 C. demersum는 pH, DO에 대한 안정적인 일주기 경향을 보였다. 영양염류인 $NH_3{^+}$, $NO_3{^-}$, $PO{_4}^{3-}$를 대상으로 저감률을 검토한 결과 실험초기부터 9일간 지속적인 감소를 보였고 특히 24 hr 이내에서 빠른 감소를 나타내었다. C. demersum의 단위면적당 생체량과 영양염류 제거율 사이에 높은 상관관계($r^2{\geq}0.96$, p<0.001)가 도출되었으며, 피복도가 높을수록 오염물 저감 효율이 큰 것으로 나타났다. 하지만 높은 밀도의 반응조에서는 C. demersum의 활성화 차이가 있었으며, 그럼에도 불구하고 수질정화 효과가 나타난 것은 침수식물에 존재하는 부착조류나 미생물의 영향이 큰 것으로 여겨진다. Microcystis aeruginosa (M. aeruginosa)는 C. demersum의 생장밀도 2,500 g $fw/m^2$ (피복도 100%) 조건에서 성장률 0.31 /day를 보였으나 대조구는 0.47 /day을 나타내었다. 세포수 비교에서는 실험구보다 대조구가 약 1.7배 높게 나타나 C. demersum의 남조류 성장 억제 능력을 시사하였다.

• 지역연구
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• 제39권4호
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• pp.91-110
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• 2023

본 연구의 목적은 신문기사를 통해 건설 이후 약 34년 동안 1기 신도시의 도시 성장 과정에서 발생한 도시 이슈를 탐색하는 것이다. 이를 위해, 웹크롤링 기법을 활용하여 1기 신도시 관련 신문기사를 수집하고, 텍스트마이닝 기법을 토대로 내용분석을 진행하였다. 주요 연구 결과는 다음과 같다. 첫째, 1기 신도시 건설 초기에는 생활인프라, 부동산, 교통, 도시개발 및 정비, 안전, 주택 공급의 6개 부문에서 이슈가 다양하게 나타났으나, 점차 부동산과 도시개발 및 정비로 좁혀졌다. 둘째, 신도시 건설단계 및 도시 안정화 단계에서는 '서울시'를 중심으로 한 네트워크 구조가 유지되었는데, 이는 1기 신도시가 지리적으로 서울 근교에 건설되면서 발생한 이슈에 대해 서울과 비교하는 기사가 다수 나타났기 때문으로 볼 수 있다. 셋째, 도시 노후화에 대한 이슈는 준공 후 10년부터 나타났으며, 준공 후 30년의 시점부터는 도시 노후화에 따른 도시 재정비에 대한 논의가 본격화되었다. 본 연구는 1기 신도시의 도시 성장 과정 전반에서 발생한 이슈를 탐색하였으며, 1기 신도시 재정비 방안 마련에 기초자료로써 활용될 수 있다는 데에 연구의 의의가 있다.

• 한국강구조학회 논문집
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• 제22권6호
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• pp.589-597
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• 2010

강구조물의 점검시 피로균열이 발견되는 경우에는 보수 보강 시행의 결정과 구조물의 점검주기 결정을 위한 균열의 현재 상태평가와 앞으로의 균열진행 정도에 대한 정량적인 예측이 요구된다. 피로균열에 대한 손상도 평가는 파괴역학 파라미터를 이용한 균열진전속도와 취성파단의 여부 결정이 대표적인 방법으로 파괴역학에 관한 전문적인 지식과 함께 수치해석 프로그램의 활용능력이 필요하다. 이에, 본 연구에서는 피로손상도 평가 방법에 관한 다양성을 확보하고, 파괴역학에 대한 전문적인 지식이 없는 기술자가 피로균열에 의한 강구조물의 손상도를 간편하게 평가 할 수 있는 방법을 개발하기 위한 첫 단계로, 관통균열 시험편을 이용한 균열진전시험을 실시하였다. 그리고 피로균열 표면으로부터 측정된 COD(Crack Opening Displacement)의 크기와 측정위치를 이용하여, 균열진전속도를 추정하기 위한 파라미터를 도출하고, 그 타당성을 분석하였다. 그리고 관통균열이 있는 시험편의 형상, 응력범위, 그리고 응력비에 상관없이 COD를 이용하여 피로균열진전속도를 추정할 수 있는 방법을 제시하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2010년도 춘계 학술논문 발표대회 1부
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• pp.139-142
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• 2010

Owing to the deregulation, low interest, sufficient liquidity and etc., the real estate market has been recovered in some areas and some investment products to the degree being concerned about the overheating. In order that the construction and real estate industries, which play the considerable role in our economy, may be soundly grown toward contribution of the stable growth of our economy, it is being requested to acquire the transparency, predictability and trade stability of the international level conforming to the deregulation during the sale in lots of the building. For this reason, keeping pace with the trend of the construction industry and the current of the society, which are more and more large-scaled and globalized, it will be necessary to solve the social matters and to construct the more efficient and continuous construction management by widening and activating the field of CM through scheme of more specialized, sustainable and general CM method and establishment of new business bounded system in the construction management.

• 건축역사연구
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• 제16권3호
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• pp.115-131
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• 2007

Jeong Woo-tae(?-1809) was a military official who had worked as Byeol-Gan-Yeok in the governmental construction works during the late 18th century through the early 19th century. Byel-Gan-Yeok, literally a special technician, was an official post in the governmental construction works that carries specific technical tasks from the mid 18th century. Over 30 years, Jeong Woo-tae had devoted himself in the construction of various royal tombs, city walls, and palace buildings. He showed superb and various techniques in the works of stone carving and architectural details. After finishing the construction of the tomb of King Jeong-jo's father successfully, he was appointed as a governor of a rural town. Being on duty of the governor, he used to participate in the construction works as a technician. He also made a couple of innovative devices in the field of construction, like a carrying apparatus, Byel-Nok-No. His works secured the setting up of the post of Byel-Gan-Yeok in the governmental construction system in the 19th century. But his technical achievement remained as his own private works rather than developing to the universal growth of the craftsmen's skill. This might be a limitation of the Byel-gan-Yeok's role, whose position was remained in the midway between official and craftsman.

• 한국건축시공학회지
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• 제13권2호
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• pp.112-121
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• 2013

Korean overseas construction has been on the rise, and exceeded the 2011 goal of $50 billion by securing $59.1 billion in orders. However, these orders were heavily concentrated in the Middle East (50%) and plant construction contracts (75%). This study suggests that, to maintain growth in foreign markets, Korea construction companies should enter into the high value-added investment development business and aggressively seek ways to diversify their regions of activity and construction types. To secure the entry of Korean construction companies into lucrative markets and better understand the competitive factors facing Korean construction concerns, a survey of the literature and focus group discussions targeting relevant experts were carried out. From those efforts, a list of 44 competitive factors crucial to entering and competing in the international investment development business was developed. Survey responses were analyzed by applying IPA. The results revealed that while Korean concerns compete well in engineering/technical capabilities, maintaining a cooperative relationship with contractors, and warranty/after sales service capabilities, their ability to obtain business information on the target country, to form private/public cooperative systems, and to build international human networks require immediate improvement.