• 산업경영시스템학회지
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• 제26권4호
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• pp.82-90
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• 2003

The Systems Engineering, as a methodology for engineering and management of today's ever-growing complex system, is a comprehensive and iterative problem-solving process. The process centers on the analysis and management of the stakeholders' needs throughout the entire life-cycle of a system and searches for an optimized system architecture. There are many essential needs and requirements to be met when a system development task is carried out. Systems Engineering Management Plan(SEMP), as a specification for system development process, must be established to satisfy constraints and requirements of stakeholders successfully and to prevent cost overrun and schedule delay. SEMP defines technical management functions and comprehensive plans for managing and controlling the entire system development process, specialty engineering processes, etc. Especially. in the case of a large-scale complex system development program where various disciplinary engineering such as mechanical; electrical; electronics; control; telecommunication; material; civil engineering etc. must be synthesized, it Is essential to develop SEMP to ensure systematic and continuous process improvements for quality and to prevent cost/schedule overruns. This study will enable the process knowledge management on the subject of SEMP as a core systems engineering management effort, that is, definitely defining and continuously managing specification of development process about requirements, functions, and process realization of it using a computer-aided systems engineering software. The paper suggests a systematic SEMP development process and demonstrates a data model and schema for computer-aided systems engineering software, RDD-100, for use in the development and management of SEMP. These are being applied to the systems engineering technology development task for the next-generation high-speed railway systems in progress.

• Journal of Construction Engineering and Project Management
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• 제7권1호
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• pp.13-25
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• 2017

Construction projects have been observed to have problems of project delays and disruptions and the South African construction industry is not an exception. This research identified causes and effects of project delay and disruption through a desktop study. Subsequently, a questionnaire was designed and used to conduct a survey to obtain the views of the three main construction project participants - clients, consultants, and contractors. The questionnaire contains 48 causes and 13 effects of project delay and disruption identified from the desktop study. This research identified sixteen most important causes of project delay and disruption and five most important effects of delay and disruption. Sixteen most important causes were: (1) strikes, (2) rework due to errors during construction, (3) shortage of materials in market, (4) suspension of work by the client, (5) poor communication between the parties, (6) ineffective planning and scheduling of project, (7) delays in issuing working drawings, (8) mistakes and discrepancies in design documents, (9) shortage of labours and equipment, (10) delay in decision making process by the client, (11) unforeseen ground conditions, (12) unclear and inadequate details in drawing, (13) inadequate contractor's experience, (14) delay in approving changes in the scope of works, (15) delay in material delivery and (16) unacceptable quality of materials. The five major effects include: (1) create stress on contractors, (2) cost overrun, (3) time overrun, (4) poor quality of work due to rush, and (5) disputes. Furthermore, the result of this research was compared with the result of previous studies conducted in other regions of Africa in terms of causes and effects of project delay and disruption. The research concludes that numerous causes and effects of delay and disruption are limited to South African construction projects based on the comparison. The causes limited to South African construction projects include: (1) strikes, (2) suspension of work by the client (3) mistakes and discrepancies in design documents (4) delay in approving changes in the scope of works and (5) unacceptable quality of materials, while the two major effects limited to South African construction projects includes: (1) create stress on contractors and (2) poor quality of work. In conclusion, some recommendations were made in order to minimise the causes of delay and disruption identified.

• 한국건설관리학회논문집
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• 제5권6호
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• pp.110-117
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• 2004

건설사업과 환경보전은 대립적인 요소를 많이 가지고 있어 건설사업으로 인한 환경 분쟁이 급증하고 있으며 소음 $\cdot$ 진동에 관한 분쟁이 대부분을 차지하고 있다. 이러한 분쟁과 민원은 기업에 대한 부정적 이미지, 사업의 지연 $\cdot$중단, 배상액 지불 등 막대한 경제적 손실을 가져오므로 치밀하게 관리할 필요가 있다. 본 논문에서는 문헌조사를 통하여 이론적인 고찰을 실시하고, 소음 $\cdot$진동 관련 법령을 정리 분석하여 건설사업과 관련된 검토항목을 추출하였다 또한 사전 환경성 검토 환경영향평가 항목과 분쟁조정에 관한 통계자료를 검토 $\cdot$분석하여 건설사업의 추진단계별 소음 $\cdot$ 진동 관리방안을 제시하였다 이는 건설사업을 수행함에 있어서 소음 진동에 관한 규제사항의 정확한 준수와 분쟁 및 민원의 발생을 최소화하는데 활용될 수 있을 것이다.

• 한국건축시공학회지
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• 제14권6호
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• pp.551-559
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• 2014

본 연구는 설계시공병행방식에서의 하도급관리의 중요성 및 필요성을 강조하고, 공사의 특수성과 더불어 성공요인을 살펴보고 하도급와의 관계에 대해 고찰하였으며, 이를 바탕으로 하도급 전략 방안 도출해 실제 공사사례에 적용하였다. 따라서 설계시공병행방식의 실제사례를 통하여 제안한 전략적 하도급방안을 적용해보고 그 효과의 실증했음에 그 의의를 가지나, 대표 표본에 대한 검증이라는 한계점 때문에 더 많은 사례를 통한 검증이 요구된다.

• 대한안전경영과학회지
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• 제16권4호
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• pp.123-131
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• 2014

Modern weapon systems are getting more complex in terms of the functionality and also the conditions on the environment and range in which they are deployed and used. Therefore, many development programs can easily be exposed to a variety of risks, resulting in delayed schedules and cost overrun. As such, effective means are necessary to keep the defence budget at an affordable level while competitive edges on technological aspects are retained. As one way to meet those need, modeling and simulation (M&S) methods have widely been used, particularly in the test and evaluation (T&E) process for weapon systems development. The result of M&S-based systems development should be evaluated by the verification, validation & accreditation (VV&A) process to assure keeping reliability at a desired level. On the other hand, due to the explosiveness, the weapons systems development naturally requires to consider safety issues in both the T&E and operational periods. The purpose of this paper is to improve the VV&A process by reflecting the safety requirements therein. To do so, the VV&A process has been analyzed and graphically modeled first and then safety elements have been incorporated effectively. The use of the improved process in the war ships development has also been discussed. Based on the process proposed and the consequent database constructed, the target system can be expected to benefit from reducing development risks while assuring systems safety.

• 무역상무연구
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• 제61권
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• pp.273-302
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• 2014

Project finance ("PF") is a method of raising long-term debt financing based on lending against the cash flow generated by the project alone. Project finance is a nonrecourse or limited recourse financing structure against the sponsors(or the investors). The debt terms in a project finance are not based on the creditor's credit support or on the value of the assets of the project. Lenders rely on the future cash flow to be generated by the project for debt repayment and interest, rather than the value of the project or the credit ratings of the sponsors. The non-recourse or limited recourse financing usually prompt potential project finance lenders to assess carefully all possible risks that might arise in a project to ensure that those risks are mitigated and controlled. In this respect, project finance is a opposite financing method of corporate finance. Project finance has rapidly grown over the last 20 years due to the worldwide process of privatization of public sector and development of natural resources. Global project finance volume reached the record USD 406.5 billion in 2011. In 2012, however, Global project finance volume dropped 6% to USD 382.3 billion. Infrastructure overtook Energy to lead all sectors with USD 113.6 billion. It is generally recognized that there are more and higher risks in project finance compared with corporate finance. Project finance is exposed to commercial risks as well as political risks. The main commercial risks are completion risks, environmental risks, operating risks, input supply risks, revenue risks, etc, and the main political risks are currency convertibility and transfer risks, expropriation risks, war and civil disturbance risks, risks of breach of government concession agreement, etc. Completion risks include permits risks, risks relating to the EPC Contractor, construction cost overrun, delay in completion, inadequate performance on completion, etc.

• Journal of Construction Engineering and Project Management
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• 제9권2호
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• pp.1-24
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• 2019

Poor project performance has been noted as the bane in the construction industry globally. This paper sought to investigate, by way of literature, the performance patterns of construction projects in Kenya since independence (1963-2018). This was informed by reports of undesirable project performance in the industry. This descriptive study used available studies previously done in this subject area. In sum, literature is replete with evidence on a myriad of challenges facing the execution of projects. The study established that generally, the project performance is poor and has assumed a chronic trajectory spanning over five decades. On average, the findings reveal that 35-60% of projects initiated in Kenya face cost overruns while time overrun is most severe with 35-73% projects overrunning their schedule. In addition, the findings problematize the issue of plurality of performance measurement regimes in the construction industry. Here, it was observed that no singular construct exists to objectively measure the various facets that constitute the 'health' of a project. This paper has contributed to the body of knowledge by examining the performance patterns in Kenya for over fifty years while at the same time identifying the bottlenecks inherent in projects execution. Importantly, the conceptual performance efficiency framework derived in the current study presents a paradigm shift in the monitoring and evaluation of projects. To this end, an in-depth analysis is recommended on the interaction of efficiency enablers in the buildup of performance efficiency index (PEI). Similarly, a further inquiry is recommended on the integration and impact of the proposed framework in the management of projects.

• 디지털융복합연구
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• 제16권12호
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• pp.123-135
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• 2018

본 연구는 플랜트 엔지니어링 산업에 속하는 대기업들의 공급망관리 도입과 운영에 대한 문제점을 살펴보고 이를 개선하기 위한 기본틀을 제시하는데 목적이 있다. 관련 자료의 축적을 위한 사례연구결과, EPC 형태의 사업운영과 더불어 프로젝트 관련 결정의 조정능력 및 정보공유 부족, 적절한 위험 및 변화시스템의 부재 등은 납기지연 및 예산 초과로 이어진다는 것도 알 수 있게 되었다. 공급망의 정보화는 경쟁력 제고와 직결되므로, EPC 프로젝트 공급망의 협업관련 정보화와 정보공유 수준을 살펴보기 위해 공급망을 구성하는 협력업체에게 설문조사를 실시하였다. 통계적 분석결과, 정보공유, 디자인과 설계활동의 조기참여 및 SCM에 대한 인식은 공급망 상의 협업에 긍정적 영향을 미치나 협력업체의 정보화나 평가는 유의미한 영향을 미치지 않는 것으로 나타났다. 이외에도 설계 및 엔지니어링, 조달, 시공의 여러 부문을 통합하는데 기여할 수 있는 프로젝트 공급망관리 모형을 제안했으며 이를 통해 몇 가지 실무적 시사점도 기술하였다.

• 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.146-152
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• 2017

Recently, countries in the South-east Asia are making efforts to enhance the construction industry system and introduce the construction management system. However, it is challenging to apply construction management in site due to lack of technology and professionals for CM. This can result in frequent safety accidents, cost overrun, schedule delay, etc. Therefore, it is necessary to carry out a clear evaluation of the overall situation regarding the level of technology and required competency. The objective of this research is to investigate on which management skills and items for CM are required to improve the construction management skills in South-east Asian construction industry. As a result of the questionnaire, most of the officials selected that the design phase and the construction phase are important works, and the engineers evaluated activities during the bidding phase, the design phase and the construction phase as important works for construction management. However, in most of the results, it was observed that the current competency of Vietnam construction is insufficient compared to the evaluated importance of the skills. This can be explained by the fact that they are not capable of managing construction projects effectively as compared to the importance. The results can help to realize the inadequate aspects of local construction industry, which will be the basis of improvements. Also, it is expected to be supportive to improve construction management in the countries and also provide indicators related to work stage or technology that should be acknowledged when establishing the advancing strategy for Southeast Asian countries in the future.

• 한국건설관리학회논문집
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• 제17권3호
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• pp.125-133
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• 2016

프로젝트 리스크관리는 프로젝트 착수에서 완공에 이르기까지 프로젝트 생애주기 동안 프로젝트의 범위, 비용, 일정 등에 영향을 미치는 위협 및 기회 요인을 포함하는 리스크를 사전에 식별하고 이에 대한 완화전략을 사전에 마련함으로서 프로젝트를 성공에 이르게 하는 효과적인 관리를 위해 활용된다. 프로젝트를 진행하는데 있어서 완공일이 지나기 전에 예산과 공사기간을 정확히 예측하는 것은 불가능하므로, 미국 워싱턴교통부에서는 사업비 규모에 따라 여러 분야의 전문가를 참여자로 하는 워크숍을 실시하게 함으로서 체계적인 리스크관리를 의무화하고 있다. 하지만 국내 건설 현장에서는 체크리스트 및 리스크분석 위주의 리스크관리만 이루어지고 있어 효율적인 관리가 이루어지지 않고 있다. 따라서 본 연구에서는 국내 A하천정비사업에 워크숍 기반 리스크관리기법을 국내 처음으로 적용해 봄으로서 국내 현실에 적합한 효율적인 리스크관리 방법을 제안하였다. 또한 이러한 리스크관리 전 과정에 식별된 리스크를 분석하여 완화전 후의 리스크에 대한 비교를 쉽게 살펴보고 관리할 수 있는 RBES 프로그램을 활용하였다. 그 결과 전체 사업비용과 공사기간의 증가 문제를 사전에 인지하고 이에 대한 실질적인 완화대책을 수립하게 함으로서 공사기간 지연효과를 미리 방지하는 효과가 있었다.