• Asia Marketing Journal
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• 제2권3호
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• pp.129-148
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• 2000

• 한국자원리싸이클링학회:학술대회논문집
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• 한국자원리싸이클링학회 2004년도 춘계임시총회 및 제23회 학술대회
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• pp.114-118
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• 2004

• 한국건설관리학회논문집
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• 제16권3호
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• pp.165-176
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• 2015

국내 건설산업의 침체가 장기화됨에 따라 대형 건설업체를 중심으로 국내사업 비중이 줄고 상대적으로 해외사업의 비중이 증가되고 있으며, 중견 건설업체 및 특수기술을 가지고 있는 전문건설업체의 해외프로젝트 수행이 확대되고 있다. 이러한 해외건설공사 수행의 중요성이 부각되고 있는 최근 상황에서 해외 대형건설공사에서 일반적으로 발생되고 있는 공기지연에 대한 적극적 대응이 성공적 프로젝트관리의 중요한 이슈로 제기되고 있다. 본 연구에서는 해외 대형프로젝트의 공기지연 클레임의 공기연장기간을 입증하는데 활용되는 기존 공기연장기간 분석방법의 실무적 적용상의 문제점을 제기하였다. 제시된 문제점을 해결하기 위한 개선방법으로 1)클레임의 명확성을 확보하기 위해 지연영향력 분석이전에 주요지연(dominant delay)를 선정하는 절차를 갖는 개선개념과 2)Time Impact Analysis을 시행을 위한 분석구간의 설정방법에 대한 개선개념을 제시하였다. 본 연구에서 제시한 공기연장기간 분석방법을 실제 해외 대형건설공사의 공기지연 클레임 사례에 적용함으로써, 제안한 개선안의 실무적용에 대한 유효성을 입증하였다. 국내의 해외 대형공사 공기지연 클레임을 담당하고 있는 기술자들이 본 연구에서 제안한 방법들을 공기지연 클레임 추진 및 관련자 협상 등과 같은 실무 추진에 참고하고 활용함을 통해, 공기연장기간 입증관련 클레임의 협상실패로 인한 리스크와 후속적인 분쟁 및 회사의 경영손실 리스크를 최소화 하는데 도움이 될 것이라고 사료된다.

• 품질경영학회지
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• 제47권3호
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• pp.631-639
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• 2019

Purpose: In this paper we present a case study of applying quick and easy experimental design approach to develop a Halogen free flame retardant material for cellular phone charger cable. Methods: We employ sequential experimentation of mixture design, verification design, and factorial design. A quick and easy approach is adopted based on data investigation and graphical method instead of strict statistical analysis, which helped enhancing smooth communication with the engineers and speeding up the development process. Results: Flame retardant material in pellet type produced from the optimal condition is transported to the customer and tested, to pass the customer retardancy criteria. Conclusion: The quick and easy experimental design approach is considered to be useful in this case study.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.794-799
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• 2009

The temperature control of in-place concrete is the most important factor for an early age of curing concrete. Heat stress of mass concrete caused by the heat of hydration can induce the crack of concrete, and a frost damage from cold weather casting concrete results defect on compressive strength and degradation of durability. Therefore, success and failure of concrete work is dependant on the measurement and control of concrete temperature. In addition, the compressive strength assessment of in-place concrete obtained from the maturity calculated from the history of temperature make a reduction of construction cycle time, possible. For that purpose, wireless temperature measuring system was developed to control temperature and assess strength of concrete. And, it was possible to monitor the temperature of concrete over 1km apart from site office and to take a proper measure; mesh-type network was developed for wireless sensor. Furthermore, curing control system that contains the program capable to calculate the maturity of concrete from the history of temperature and to assess the compressive strength of concrete was established. In this study, organization and practical method of developed curing control system are presented; base on in-place application case.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.540-543
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• 2015

Solar energy is one of the most important alternative energy sources which have been shown to meet high levels of heating and cooling demands in buildings. However, the efficiencies to satisfy these demands using solar energy significantly vary based on the characteristics of individual building. Therefore, this paper is focused on developing the methodology which can help to design optimal solar system for heating and cooling to be in cooperated within the existing buildings according to their load profiles. This research has established the Solar Heating and Cooling (SHC) system which is composed of collectors, absorption chiller, boiler and heat storage tank. Each component of SHC system is analyzed and made by means of Modelica Language and Pistache tool is verified the results. Sequential approximate optimization (SAO) and meta-models determined to 15 design parameters to optimize SHC system. Finally, total coefficient of performance (COP) of the entire SHC system is improved approximately 7.3% points compared to total COP of the base model of the SHC system.

• Industrial Engineering and Management Systems
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• 제11권2호
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• pp.196-201
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• 2012

This study has developed a packaging criterion to minimize the level of discomfort which drivers using their vehicles for daily life purposes may experience due to ill designed vehicle packaging of mid-size sedan based on users' daily-life scenario. To find out optimal range of packaging dimension criterion, discomfort levels the test participants with different physical conditions suffer while performing various activities were analyzed. One hundred two test participants were carefully selected to represent entire Korean mid-size sedan owner-drivers. They were directed to test drive on the course designed to simulate mid-size sedan daily-usage scenario. At pre-designed locations, each of questions was asked to the test participants to be answered in the form of 10 point discomfort level score. By analyzing the test results, the optimal range for packaging dimensions was defined to be used as a packaging criterion.

• 대한조선학회 특별논문집
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• 대한조선학회 2007년도 특별논문집
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• pp.79-88
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• 2007

In this study, we improved the layout of deckhouse pre-erection area where erects the blocks and developed the pre-erection block arrangement system for the improvement of productivity and effectiveness. The major operating point of the pre-erection area is to fabricate as many as possible that has restrict area and working plate. The developed system has information management module, scheduling module, schedule control module, statistics module, and information integrate module. The heuristic algorithm is issued and evaluated with real data. And genetic algorithm is used for the evaluation of issued it.

• 한국IT서비스학회지
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• 제19권4호
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• pp.1-11
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• 2020

Through text mining, sentiment analysis, and semiotics analysis, this study aims to reinterpret the meaning of user emotional words and related words to derive strategic elements of brand and design. After selecting a local car manufacturer whose user opinion on the brand is a clear topic, web-crawl the car comments of the manufacturer directly created by the users online. Then, analyze the extracted morphology and its associated words and convert them to fit the marketing mix theory. Through this process, propose a methodology that allows consumers to supplement and improve brand elements with negative sensibilities, and to inherit elements with positive sensibilities and manage brands reasonably. In particular, the Map presented in this study are considered to be fully utilized as information for overall brand management.

• 산업공학
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• 제19권2호
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• pp.160-167
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• 2006

It is a crucial managerial issue how to manage assembly blocks at shipyard. Based on the project experience in Hyundai Heavy Industries, this study points out the difficulties on the block stockyard operations, formalizes the JIBUN (location) assignment problem for assembly blocks, and develops the JIBUN (location) assignment algorithm whose purpose is to reduce the number of unproductive block moves. Through simulation experiments for various situations, this study demonstrates the usefulness of JIBUN (location) assignment algorithm. In addition, this study examines the impacts of block move sequence rules and of block stockyard layouts on the block stockyard operations.