• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.1015-1018
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• 2007

VE is one of the most effective and systematic tool available to achieve the required function at minimum cost and manage in many industrial fields. The purpose of the preparation phase VE job plan is to establish a cooperation system referring to groups for the successful implementation of VE, and to achieve a common objective to collect sufficient materials required in the analysis phase. The Quality Model is used to measure the requirement of shareholders(users and owners)in the project. It also offers a guideline on decision making when executing the function definition, function arrangement, function evaluation, and the idea evaluation of VE. However, the current the preparation phase business confirms that the required items of owners and users has not suggested definite goals and directions. This study analyzes the problems of current work in the preparation phase from case study, survey and interviews of experts. It then proposes a new process after understanding the required items of owners, users and experts.

• Korean Journal of Construction Engineering and Management
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• v.9 no.4
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• pp.111-119
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• 2008

VE is one of the most effective and systematic tool available to achieve the required function at minimum cost and manage in many industrial fields. The purpose of the preparation phase VE job plan is to establish a cooperation system referring to groups for the successful implementation of VE, and to achieve a common objective to collect sufficient materials required in the analysis phase. The Quality Model is used to measure the requirement of shareholders(users and owners)in the project. It also offers a guideline on decision making when executing the function definition, function arrangement, function evaluation, and the idea evaluation of VE. However, the current the preparation phase business confirms that the required items of owners and users has not suggested definite goals and directions. This study analyzes the problems of current work in the preparation phase from case study, survey and interviews of experts. It then proposes a new process after understanding the required items of owners, users and experts.

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.460-460
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• 2018

댐 수문학적 안전성평가는 "시설물의 안전 및 유지관리에 관한 특별벌(이하 시특법)"에 따른 댐시설물의 정밀안전진단의 안전성평가 중 가장 중요한 평가 항목으로 댐 시설물을 평가 수행 시 주요한 평가 항목이다. 기존의 수문학적 안전성평가는 가능최대강수량 발생 시 댐의 월류 및 여유고 확보여부에 대한 평가 여부만 판단하고 있으나, 본 연구에서는 기후변화를 고려하는 장기적 관점의 추가 평가항목을 도출하고자 한다. 현재 가능최대강수량으로 event적 평가를 수행하는 수문학적 안전성 평가에서 기존평가항목 뿐만 아니라, 기후변화 장기적 관점의 추가적인 기후영향인자를 도출하고 이를 함께 적용할 수 있는 평가 체계를 구축하고자한다. 장기적 관점의 기후영향인자라 함은 기상청에서 제공하는 기후변화 시나리오 결과에서 30년동안 장기적인 관점에서 대상 댐의 운영에 부담을 야기할 것으로 판단되는 인자를 말하는 것이며, 이때 기후변화 시나리오의 일자료를 활용하여 기후인자의 장기적 변동성을 추정하고자 하며, 이때 활용한 지표로는 월최대강수량, 연강우강도 및 댐 상태에 영향을 미칠 수 있는 최소기온을 사용하였다. 기후변화 시나리오의 불확실성을 최소화하기 위하여 월최대 강수량값을 산출하였고, 1년 동안 발생한 강우의 일수 및 강수량에 대한 영향을 고려하기 위하여 연강우강도값을 산출하였다. 또한 댐의 월류 및 여유고 확보여부 평가 시 댐 상태에 대하여 고려하기 때문에 댐의 외부상태에 영향을 주는 최소기온을 활용하여 댐별 평가를 수행하였다. 이때 2011~2040년(S1), 2041년~2070년(S2), 2071년~2100년(S3)기간으로 나누어 장기간 기후에 대한 영향 평가를 수행하여 1종 댐 시설물의 기후영향인자 값을 도출하였다. 도출된 기후영향인자를 기존 수문학적 안전성평가 항목과 함께 평가 될 수 있도록 AHP분석기법을 활용하여 각 인자에 대한 가중치를 재산출하였고, 기후영향인자를 고려하는 수문학적 안전성평가 체계를 구축하였다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.39 no.5
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• pp.647-656
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• 2019

This paper aims to analyze the priority of elements in building management system surveying owners living in Small-scale Apartment, and to suggest basic data for establishing effective management alternatives. To achieve the goal, this paper extracted the elements from a guideline supported by the Ministry of Land, Infrastructure and Transport in Korea, and tried to analyze their priority. The result as follows. First, the analysis of the first level suggested that people give priority to facility management, moving management, security management and administrative for management. Second, on the analysis of the second level, settlement of budget was the most important for the administrative, cleaning for facility management, parking management for security management and advertisement of the administrative for moving management. By suggesting the result, this paper concludes that it would be very important to establish a regional management corporation to manage the Small-scale Apartment.

• Convergence Security Journal
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• v.20 no.4
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• pp.3-12
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• 2020

Although the related regulations or guidelines are not specified in the defense weapon system R&D process, R&D authorities frequently encounter problems that require rational decision-making. If the rational process is not applied in the matter of alternative choice, the project could be disrupted, which can result in longer project periods or more resource provision. In particular, a variety of decision-making methods are needed for test&evaluation of missile R&D. The issue of selecting a test site is one of the representative decision-making problems. If it is needed to determine the priority of multiple sites, Delphi Method and Analytic Hierarchy Process(AHP) will be applied. However, if the input of cost is to be considered, Data Envelopment Analysis(DEA) is more valuable to solve the problem. This paper proposes a solution to handle quantitatively various decision-making problems that can occur in missile flight test, and shows how DEA is applied through a simulated case study of selecting a foreign test site.

• Journal of the Korea Institute of Building Construction
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• v.22 no.2
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• pp.207-218
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• 2022

Changes in megatrends occurring within the spatial range of the production process can be critical factors that affect the performance of unit projects in construction industry, one of the representative order industries. Although changes in the megatrend are a prerequisite for successful performance achievement, previous studies suggested methods for performance measurement and management within the production process as major results. Accordingly, this study analyzed the megatrend related to domestic construction projects and presented critical impact factors(CIFs) that can be affect a project's performance. CIFs were set by combining keywords derived by reviewing major contents of related laws and policies and future strategy reports, and the importance of each indicator was quantitatively analyzed using analytic hierarchy process(AHP). It is expected that the findings of this study can provide meaningful basic data that the various stakeholders in a construction project can refer to when establishing the strategies to achieve successful performance.

• Journal of the Korean Society of Systems Engineering
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• v.17 no.2
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• pp.9-22
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• 2021

A study on the sustainability evaluation of the requirements of the mobile industry closely related to the human factor was needed. We conducted the sustainability evaluation of the mobile industry using a quantitative evaluation method with the AHP tool and a qualitative evaluation method reflecting the technological age flow of the philosophical thoughts to improve the reliability of the evaluation results of the model verification. And this evaluation is to evaluate the consistency of the connection between the national sustainability and the mobile industry. In order to draw the conclusion of the relevance, the team member Delphi 5-point scale was used. As a result, the priority was confirmed in the national sustainable development indicator and mobile industry indicator. Quantitative and qualitative evaluation was applied to the discontinued model of mobile to derive insufficient indicators, and it was confirmed that if the indicators were improved and reflected, it would be sustainable. And in order to secure reliability and accuracy, we made a proposal to apply the systems engineering process to the development of the model evaluation field. The systems engineering technology process meets the needs and requirements of stakeholders throughout the lifecycle and it is suitable for the development model of the industry's sustainability assessment.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.4D
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• pp.493-504
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• 2008

Considerable effort has been made to improve construction processes through mechanization and robotization of current work. In this paper, the trend of research and development related to the construction machinery automation to improve the construction productivity has been reviewed. A classification system is proposed for automation of architectural and civil works. Then, the priority among the classified construction tasks for automation has been identified through the questionnaire study. Based on the priority for automation a comprehensive technology road map was also developed. The technology road map suggests the time frame to complete R&D work for the selected construction tasks and the core technology required for automation of the selected tasks. Such automation R&D road map for construction machinery can be utilized as a milestone in setting up the R&D strategy in the construction industry.

• International conference on construction engineering and project management
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• 2020.12a
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• pp.23-29
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• 2020

Multilayer sub-contracting is a significant practice among the world, including Hong Kong. When a principal contractor secured a project from a developer, the specific jobs will usually be breaking down and sub-contractors with the lowest bid [1]. The adoption of multilayer sub-contracting has been a controversy issue which is considered as a two-side blade. While certain studies have been carried out to examine both the contributions, damages and improvements for multi-layer subcontracting, the construction industry and researchers are still waiting for a solid measure to enhance the system. Hence, this research attempts to study the advantages, disadvantages, conducts a comparison between single and multilayer sub-contracting and measures of current Hong Kong construction industry based on literature review, questionnaire and in-depth interviews. To achieve the objectives, Analytic Hierarchy Process (AHP) and total weighted score methods are adopted to examine and rank the criterion. The findings of this study provide a good basis for understanding the major reasons and problems caused by the adoption of multilayer sub-contracting. Besides, the identified safety perspective explores a new perspective regarding to issues of multi-layer subcontracting, which will serve as a solid foundation for further research to enhance safety performance. Finally, the findings of measurements towards improvement of multilayer sub-contracting will also provide a solidsolution for construction industry.

• Journal of the Korean Institute of Landscape Architecture
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• v.39 no.3
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• pp.39-50
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• 2011

This study furnishes basis data for plan foundation and proper valuation of view by presenting objective and concrete selection standards and ways of Landscape Control Point(LCP) on valuation of development projects. To sum up the results of study, it establishes the prospect, publicity and direction of view as a selection standard LCP on precedent studies. The prospect, which includes visual range, direction of view, geographical features, and visibility, sets up as a valuation basis picking out the available places which have alterations according to direction and distance in practice. In the case of publicity, to select the place as there presentative area where public activities often happen than others, thirteen evaluation indexes including administration facilities, educational facilities, commercial facilities and so on. And variation of landscape is set up as an assessment index to know how much the land has changed from the beginning to the end of development. To apply the selection standards to sample places, the preliminary LCP is founded by analyzing both the prospect and published; a series of courses for selecting the final LCP is founded by analyzing the preliminary LCP and variableness of landscape on a basic of placed which have many alterations of view. At last, in the case of a selection system for LCP, the preliminary LCP is founded by analyzing both the prospect and publicity; a series of courses for selecting the final LCP is found by analyzing the preliminary LCP and variableness of landscape. Applying selection standards and the assessment index to the Sam-deok 3 residence improvement area, in the case of prospect, the southern distant view area has the largest extent. Next, the results of the assessment using the system of publicity show that a five-lane road is taking up the largest area. Hence, a total of 48 preliminary LCPs are set up by analyzing both the prospect and publicity. The results of analyzing landscape variation, one of the valuation indexes, show that Sam-deok dong around the post office has the highest rate of variation at 28.07%. Finally, three LCPs in each part, which are close range, middle range and distance view, are selected; thus, a total of nine LCPs are selected. The selected LCPs that go through a series of practical courses like a GIS program have a lot of professional opinions and are expected to secure objectivity of landscape assessment.