• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.616-619
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• 2004

건설사업의 목표는 해당 사업의 특성에 따라 우선순위의 차이는 있지만 기본적으로 원가절감, 공기단축, 품질확보로 압축될 수 있다. 그 중 원가절감은 발주자와 건설산업계 모두에게 중요한 목표이며 이를 달성하기 위한 전략과 방법은 중요한 관심사라 하겠다. 원가절감은 사업범위, 품질, 안전, 상호 비즈니스 관계, 고객만족 등 타 매니지먼트 요소의 희생을 수반함으로써 부정적인 이미지로 인식되어 왔다. 그러나 원가절감이란 용어는 부정적인 이미지를 극복하고 가치창조(value for money)를 달성시키는 긍정적인 방향으로 변화하여야 할 것이다. 본 연구에서는 영국 Constructing Excellence의 성공사례를 중심으로 원가절감의 성공사례 분석을 동하여 긍정적인 원가절감 전략의 특징을 도출하고자한다.

• Journal of information and communication convergence engineering
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• 제11권1호
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• pp.1-6
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• 2013

Suppressing or mitigating signal distortion due to group velocity dispersion and optical Kerr effects is necessary in ultra-high speed and long-haul wavelength division multiplexing (WDM) transmission systems. Dispersion management (DM), optical phase conjugation (OPC), and the combination of these two are promising techniques to compensate for signal distortion. In this paper, to implement a flexible optical WDM network, a new optical link configuration with a randomly distributed single-mode fiber (SMF) length and fixed residual dispersion per span in the combination of DM and OPC is proposed and investigated. The simulation results show that the best net residual dispersion (NRD) in the proposed optical links is +10 ps/nm, which is independent of pre- and postcompensation. The effective launch power of the WDM channel is increased more in the optical links with NRD = +10 ps/nm controlled by only precompensation. Furthermore, the system performance difference between the proposed optical link configuration with the best NRD and the conventional optical link with uniform distribution of the SMF length had little significance. Consequently, it is confirmed that the proposed optical link configuration with the best NRD is effective and useful for implementing a reconfigurable long-haul WDM network.

• Journal of Construction Engineering and Project Management
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• 제2권1호
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• pp.14-19
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• 2012

Maturity models allow organizations to assess and compare their own practices against best practices or those employed by competitors, with the intention to map out a structured path to improvement. This research explores the aspects of the Maturity Models that are relevant to distinguish them from one to another. The different Project Management maturity models for define maturity differently and measure different things to determine maturity. Because of this, organizations should give careful consideration to select appropriate maturity model. The main reason behind this research lies on the modification to the existing Organizational Project Management Maturity Model (OPM3) by adding four knowledge areas, dedicated to construction industry as best practices. These are Safety, Environment, Financial and Claim Management. This Model contains (Yes/No) questions; all of these questions must be answered before the user reviews the results that describe the overall maturity and areas of strength and weakness of an organization. The research presents the implementation of the proposed Model Construction Enterprises Maturity Model (CEM2). All the components of the developed Model have been implemented in Microsoft Access. CEM2 helps Construction Enterprises to assess their Maturity Level and know Areas of Weaknesses for future improvement. The easy to use Yes/No user interfaces help enterprises' employees to assess the maturity level of their enterprises. The Model maintains users' responses in its database; as such, many employees from different enterprise divisions can be involved during assessment phase in several sessions.

• 한국전자거래학회지
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• 제12권3호
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• pp.177-191
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• 2007

공급사 관계 관리 시스템은 기업 내 조달 프로세스의 효율화를 위해 중요하다. 이미 개발된 공급사 관계 관리 시스템이 있지만, 이들은 공급사 관계 관리 시스템을 도입하고자 하는 기업에게 구매 프로세스와 시스템의 변경을 요구하여 기업의 입장에서 이를 쉽게 수용하지 못하게 한다. 이를 해결하기 위해 본 논문에서는 기업의 구매 프로세스와 시스템의 변경을 최소화 할 수 있는 단순한 시스템 구조를 제안하고, 동시에 변경을 최소화하기 위하여 공급사 관계 관리 시스템의 필수 기능을 정의하고 이를 구현함을 보인다. 시장 변화에 따른 효율적 공급사 평가를 위해서 본 연구 수행에 앞선 연구 결과로 구매 과정에서 발생하는 공급사 평가를 위한 의사 결정 지원 시스템인 BestChoice가 가지는 공급사 평가 알고리즘과 공급사 평가에 대한 효율적 분석 지원을 위한 시각적 분석 방법을 도입하였다. 이와 합께 템플릿 기반 세분화 기법을 도입하여 시장 변화에 따른 공급사의 세분화를 쉽게 하여 공급사 평가 및 관리 정책의 변화를 자유롭게 하였다. 실재 구매 대행 기업에 본 연구 결과를 적용한 공급사 관계 관리 시스템을 구축함으로써 구매 프로세스나 시스템의 변경 없이 쉽게 시스템 도입이 이루어질 수 있음을 보였다.

• 대한안전경영과학회지
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• 제9권3호
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• pp.95-102
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• 2007

Nowadays, globally high-grade companies have done their best for increasing their competitive power through a many kinds of method in incisive competition for making certain of a pacesetting position. Among the rest, Six Sigma have been the best methodology of improving process and have proven to be effective by the result of improving process in many of manufacturing business, however, it has not obtained excellent results in the transaction business. In transaction business, a $30\sim50%$ costs in total costs is generated by slow-speed working and reworking. The slow processes decrease the quality and increase the cost, which decreases customer satisfaction, and finally the income is decreased. All of them are so called wastes in processes. For this, adopting of lean six sigma methodology in process management can eliminate the wastes and reduce the variation. This study focuses on distribution with the domains like capacity, layout, amount of location, assignment of product, operation procedure and operation rule in order to improve these domains, we make a further application of eight analysis ways based on DMAIC method for improving operation of processes of distribution center as the third profit source. The goal of this study is to trace an approach that can easily adopt of Lean Six Sigma in operational management of distribution center by a kind of data, analysis method and template.

• International Journal of Quality Innovation
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• 제9권1호
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• pp.94-102
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• 2008

When facing the global severe competition, the enterprises all try their best to upgrade the quality, reduce the costs to reach the goal of customer satisfaction. Motorola was the earliest firm creating the term Six Sigma (6 ${\sigma}$); GE was the enterprise successfully fulfilling Six Sigma. The success of these two firms revealed the prominent effects and became the world-class model enterprises. The main purpose of promoting Six Sigma activity was to reduce the possible defects in the business process to the least through designing and monitoring business process in order to reach the goals such as the best quality and efficiency, the lowest costs, the shortest circular process time, maximum profits and customer satisfaction. This research used the Six Sigma technique to improve the business process of ceramics manufacturing plant and find out the major factors of slower core task time by the analytical process of Process Mapping, Pareto Chart, Simu18 simulation software and figures and proposed the improvement measures. Through the confirmation of the case companies, it successfully reduced the core process time and the organizational costs and increased the capacity.

• Journal of Construction Engineering and Project Management
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• 제5권1호
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• pp.1-10
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• 2015

In construction, stakeholders of extended project team play a key role in the overall project performance. Successful integration of stakeholders demands for good management practices at strategic, operational and project levels. Targets and measures to improve the stakeholder performance encourage the creativity and willingness of stakeholders of extended project team to develop the better ways to achieve the project objectives. This paper presents a generic descriptive method, showing how stakeholder's ability and influence impacts on project performance in the construction sector. The findings of a series of interviews with key informants are presented and the following main conclusion is drawn: improving project performance through stakeholder's contribution and measuring their performance can strengthen the project performance. This innovative approach which redefines the process of improving the project performance in construction projects will be of interest to those who intend to manage the projects in practice as well as to those who interested in advancing theory.

• KIEAE Journal
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• 제7권5호
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• pp.115-120
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• 2007

The purpose of the study is to establish a concept of property development planning process and factors by analyzing the several case studies, which prior proposed the highest and best use development of property. The value of property is dependent on the circumstances and the timing. Real property development is essential to develop in the highest and the best. The prior concepts of the highest and best use focused on the real estate appraisal, but these studies aroused an interest that related the highest and best use concept as a determinant of property development. As a results, this study suggests the process and the check points of property development planning phase. The first step is having a thorough grasp of the status of property. The Second step is the circumstantial analysis including legal restriction, locational environment, real estate market and economic conditions. The next step is, in accordance with these analysis, setting up the development concept and alternatives. Through the feasibility studies, we can make a choice the highest and best use development plan. In these days, the importance of development strategies such as design exceptionality and plan management are increased. Therefore, the integrated plan for the property development is very important.

• 대한전자공학회논문지TC
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• 제39권12호
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• pp.520-528
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• 2002

최근 ATM 포럼에서 새로운 서비스 클래스인 GFR을 제안하였다. GFR 서비스는 TCP/IP 와 같은 "best-effort" 트래픽을 서비스하기 위해서 고안되었다. GFR 서비스는 VC의 최소 수율을 보장하고, 잉여 대역을 연결된 VC에 공평히 제공하여야 한다. 본 논문에서는 GFR이 요구하는 최소 전송율 보장과 공평성을 제공하기 위해서 Leaky-bucket기반의 버퍼 관리 알고리즘을 제안한다. 제안된 버퍼 관리 알고리즘은 실제 구현이 용이하도록 Leaky-bucket의 프로세싱 부하와 구현 복잡도를 줄였다.

• 지질공학
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• 제4권1호
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• pp.57-77
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• 1994

지하수자원의 최적관리기법은 사전에 잠재오염원으로 부터 지하수를 보호하면서 이를 최적상태로 개발 이용하는 것이다. 특히 지하수 보호전략중 미국의 지하수 보호전략과 지하수자원의 오염취약성 평가법애 대해 중점적으로 연구하였다.이러한 제반 전략들은 국내 지하수자원의 관리기법에현재 이용되고 있기도 하며 추후 활용되어야 한다.