• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.371-375
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• 2015

Design-Build (DB) has gained in popularity in roadway projects due to its defining advantage to improve communication and fast-track project delivery. However, very little is known about the impact of change order frequency and occurrence timing pertaining to DB projects. The study analyzes their impacts on project time and cost performance by conducting a rigorous numerical analysis drawing on 530 3R (rehabilitation, reconstruction, and resurfacing) projects completed between 2002 and 2011 in Florida by using a multiple linear regression. The results indicate that DB outperformed Design-Bid-Build in project cost as well as time. Critically, the regression analysis signifies that earlier change order occurrence caused more unfavorable impacts on schedule and cost. The proposed analyses and models will lead to the improved ability of agencies to quickly and more reliably estimate the potential change order impacts on schedule and cost.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.25-31
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• 2007

누리꿈스퀘어 프로젝트는 서울 상암동 DMC(Digital Media City) 지역에 조성되는 IT Complex로서, 다양한 기능의 건물들이 복합적으로 구성되어 있다. 또한 설계${\cdot}$시공 일괄입찰방식으로 발주되어 설계단계에서부터 시공단계에 이르기까지 쳬계적인 건설사업관리를 요구하는 프로젝트이다. 본 연구에서는 실무적 차원의 건설사업관리 업무에 대한 이해를 돕기 위하여, 누리꿈스퀘어 프로젝트의 건설사업관리 업무를 소개하고, 주요 수행 사례에 대하여 분석하였다. 또한 본 프로잭트를 수행하면서 경험한 현행 건설사업관리 업무의 문제점을 정리하였고, 이에 대한 개선 방안을 제안하였다. 마지막으로 다년간의 건설사업관리 업무 경험을 토대로 향후 건설사업관리 제도가 발전하기 위한 방안을 제시하였다.

• 한국인터넷방송통신학회논문지
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• 제20권6호
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• pp.33-39
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• 2020

개발자는 프로젝트 구축과정에서 빌드 되지 않는 코드를 수동으로 복구하는데 상당한 시간을 소비한다. 빌드가 실패하면 실패한 실행을 이해하고 실패 원인을 식별한 뒤, 솔루션을 구현하는 과정이 필요하다. 이러한 노력을 줄이고 프로젝트 구축을 자동화하기 위해 Gradle과 같은 빌드 도구들이 발전되어왔다. 하지만 빌드 도구들은 여전히 많은 오류를 해결하지 못하여 개발자들에게 빌드 오류를 해결하기 위한 노력을 필요로 한다. 본 연구에서는 Gradle 빌드의 성공률을 높이고 오류 해결에 필요한 노력을 줄이기 위한 솔루션 추천 방안을 제시한다. 우리는 빌드 오류를 수집하는 방법과 빌드 오류 메시지로부터 성공적인 빌드로 전환되도록 하는 방법을 제공한다. 특히 Github의 Java 프로젝트에서 수집한 296개의 빌드 오류 메시지를 솔루션으로 분류하고 89%가 솔루션이 적용될 수 있음을 보여준다.

• 한국건설관리학회논문집
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• 제10권4호
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• pp.38-49
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• 2009

최근 정부 공사를 중심으로 기술경쟁이 가능한 설계시공일괄 입찰방식이 확대 적용되고 있는 추세이며 이러한 시장의 변화에 따라서 그 중요성이 더욱 증가할 것으로 예상된다. 일반적으로 설계시공일괄방식의 단위 건설사업 생애주기는 기획, 기본 설계, 입찰, 계약, 상세설계, 착공, 시공, 준공, 평가의 진행단계를 가지게 된다. 계약자의 측면에서 주무부서의 잦은 변화로 효율적인 프로젝트 관리와 일관성 있는 정보의 공유가 어려워지는 문제점이 드러나고 있다. 이러한 문제점을 해결하기 위해 기존의 주무부서에 따른 기능 중심의 관리 체계에서, 프로젝트 중심의 관리 프로세스 체계로의 전환이 필요하다. 본 연구에서는 이러한 필요성에 따라 단위 프로젝트의 진행단계별 관리 프로세스 모델 개발을 목적으로 하였다. 이를 위해서 설계시공일괄방식의 진행단계별 주요 관리 쟁점과 의사결정 사항, 업무 분석을 하였고, 진행단계별 관리 주제의 책임 및 권한과 주요 관리 포인트의 변화를 분석하여 체계화 하였다. 프로젝트 특성별 및 진행단계별 연결고리가 되는 핵심 정보를 정의 하고 정보의 흐름을 분석하였으며, 이를 바탕으로 최종적으로 발주계획 수립 단계부터 실시설계 심의 단계까지의 업무 프로세스를 모델링하고 각 수행 주체별 업무프로세스를 모델링 하여 단위 프로젝트의 진행단계별 관리 프로세스 모델을 개발하였다.

• Journal of Construction Engineering and Project Management
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• 제2권3호
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• pp.30-39
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• 2012

Design-build (D&B) has been broadly perceived as an effective project delivery method and become popular in the world. However, the implementation process of this innovative procurement method in Vietnam encounters difficulties due mainly to unfamiliarity and inexperience with the approach. Critical success factors (CSFs) which could be used to enhance the project execution are useful to practitioners in Vietnam if identified. A questionnaire survey was employed to identify CSFs of D&B projects in Vietnam. Parties' competence, especially financial capability, and contract documentation are the most important factors significantly affecting project success. It was also shown that the perspectives of two principal parties in D&B projects on the CSFs are statistically correlated. The identified CSFs were then validated with some various D&B projects. The execution results of CSFs' were compared with the projects' performance measured try key performance indicators (KPIs). The most important success factors of this study were also compared with other countries'. The validation and comparison results provide project participants with some useful information to perform D&B projects better. Practitioners should well perform the identified CSFs to enhance the chance of the success of D&B projects in Vietnam. The findings of this study are useful not only to Vietnamese practitioners but also to others who are concerned about D&B method and plan to employ it in Vietnam in future.

• 한국건축시공학회지
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• 제12권2호
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• pp.169-182
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• 2012

In the past, a strategic management of work demands has been increasingly challenged to design-build (DB) firms. Such a management is capable of providing sufficient profitable impact of a project on them. Total project profit is mainly related to actual resources, work completion time, amount of rework, and costs. The degree of recycling work packages in the DB project delivery system is used as a measure of the quality of the performed work. However, there are few models available to evaluate the impact of a demand management strategy on the DB firms and to predict its behavior. We propose a decision-making support model as an aid for assessing the amount of rework and for predicting project profit resulting in a convincible demand management strategy. This model is constructed by using a dynamic feedback approach that can analyze the problems arising in complex managerial systems. For the purpose of illustration, widely acceptable strategies were applied into the model to explore their impacts on the DB firms. The results indicate that the model is helpful for the managers in selecting the most appropriate demand management strategy for successfully achieving their objectives.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.310-316
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• 2006

Since 'Act on Private Participation in Infrastructure' were changed in January 2005, BTL(Build-Transfer-Lease) projects of Private Participation in Infrastructure was introduced in the domestic construction market for the purpose of providing public facilities with the public. Selecting the most qualified Promoter should be considered discreetly in BTL projects because BTL projects is for projects with approximately thirty year project life cycle, plan, construction, operating, maintenance and obviously the success of the project totally depends on the capability and role of Promoter. However, score for cost is likely to influence selecting Promoter to take the project. Accordingly, low bid contract with too much competition could decrease the quality of the construction plan and operating plan. Thus, this study did preliminary research and documents on problems of evaluation criteria for selecting Promoter in BTL projects, and proposed improvement factors by doing questionnaire over specialists of each field.

• 한국건설관리학회논문집
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• 제7권1호
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• pp.110-118
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• 2006

현행 일괄입찰방식은 분담이행방식의 공동도급형태로 운영되고 있어, 참여업체간의 의사소통 부족으로 설계기술과 시공기술의 접목이라는 일괄입찰방식 본래의 취지를 살리지 못하고 있다. 또한 입찰을 통해 확정된 총액금액으로 설계가 진행되므로 실시설계단계에서 VE활동을 통한 원가절감 노력이 거의 이루어지지 않고 있는 실정이다. 이에 본 연구에서는 현행 설계시공일괄방식의 특성을 파악하고 설계VE 적용사례를 분석하여, 설계VE 적용의 문제점이 무엇인지를 파악한 후, 일괄입찰사업 수행절차에서 설계VE 적용의 효과를 극대화할 수 있는 파트너링의 활용방법 및 그 적용시기를 제안한다.

• 국제학술발표논문집
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• The 7th International Conference on Construction Engineering and Project Management Summit Forum on Sustainable Construction and Management
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• pp.153-158
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• 2017

Procurement system of public construction projects in Japan is changing with diversity in rapid pace. The quality assurance and risk management of construction projects should be more certain as the projects are turning into larger scale and more complexed. The clients in the public sector will want to make the relation of responsibility among the client, the designer (architects and engineers), and contractor clearer in terms of role and risk. Public-Private Partnership (PPP) is one of the methods for collaboration of the public sector and the private sector in public construction projects where the public utilizes the ability and suggestion of the private. Private Finance Initiative (PFI), Design-Build-Operate (DBO), market testing, designated manager system, outsourcing of tasks in local governments are well-known as examples of PPP in Japan. Indeed, there is an obvious trend that Design-Build (DB) is adopted in public construction projects in many countries including Japan. In this paper, the public construction projects in various procurement systems are surveyed and analyzed. They are not limited within the traditional procurement, Design-bid-Build, a separate order system of design and construction. Design-Build or PFI are adopted. In particular, contract by wide range including maintenance of equipment can be found. On the other hand, modification from originally typical PFI is taking place, such as concept design and project finance are removed from the roles and the tasks of the special purpose company (SPC) in PFI. Standard roles and tasks in a construction project are modeled in this paper.

• 기술사
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• 제42권2호
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• pp.54-60
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• 2009

On January of this year, the 29th National Science and Technology Council, presided by President M.B. Lee, officially finalized a contract for a big project to build an International Science and Business Belt(ISBB) that includes the establishment of a new institute, the Asian Basic Science Institute (ABSI) and the construction of a Rare Isotope Accelerator. The government will inject more than 3.5 trillion Wan into the ISBB project. The investment to build the care laboratory for the project, the heavy ion accelerator, the first one in Korea, will be 460 billion Wan, Korea thus aiming to build an accelerator with world-class performance. This will be the sixth in the world. The construction will start from 2012, and is planned to finish by 2015. ABSI, whose construction will be finished by 2012, is planned to be a care laboratory with 3,000 scientists and staff. To. attract world class researchers and other professionals from aver the world, the project includes the creation of a new city with a superb educational, cultural environment, and comfortable living environment for an international community. The site for this new science and business city, "scientific ecosystem", has not been officially decided yet, and supposed to be announced in the first half af this year.