• KIEAE Journal
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• 제13권6호
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• pp.113-120
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• 2013

Many countries over the world have taken many discussions and endeavors on environmental improvements of energy savings and greenhouse gas emission reductions for solving global climate change problems. In Korea, pre-considerations of environment-conscious factors in buildings have been taken to be critical with new constructions and renovation markets. In this situation, the Korean Green Building Certification(KGBC) system to induce the diffusion of sustainable buildings was introduced in 2002 and developed as an improved version of the G-SEED(Green Standard for Energy and Environmental Design) system in 2013 after major revisions. This research examines the importance of assessment criteria on apartment buildings to certify green buildings using the AHP(Analytic Hierarchy Process) method and suggests a new direction on certification assessment standards from the AHP result. In order to apply the AHP method, the survey via e-mail was conducted to design staffs in domestic architectural firms. As a result, assessment criteria such as ecological environment, indoor environment, and energy & environment pollution among 7 main ones proved to be important on assessing the G-SEED system for apartment buildings, while criteria such as land use & transportation, material & resource, water circulation management, maintenance management did relatively unimportant.

• KIEAE Journal
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• 제12권1호
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• pp.83-90
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• 2012

Over the world, social demands and concerns of energy and resource depletions and environmental conservation have resulted in many researches and applications on sustainable development and construction. In order to support these demands and concerns, international green building certification systems such as LEED(Leadership in Energy and Environmental Design) and BREEAM(Building Research Establishment Environmental Assessment Method) were developed. In Korea, the green building certification system was introduced in 2000 and widely applied to all types of new buildings in order to induce the diffusion of sustainable buildings on May, 2010. This paper investigates the importance of assessment criteria on multi-unit apartment projects among certification rating systems using the AHP(Analytic Hierarchy Process) method and suggests a new direction on certification assessment standards. For applying the AHP method, the survey of staffs in green building certification consulting companies and architectural design companies was conducted via e-mail. As a result, criteria like energy, indoor environment, land use, pollution control, and ecological environment among 9 main ones turned out important on assessing green building certification at multi-unit apartment projects, while criteria like water resource, transportation, maintenance management, and material and resource did relatively unimportant.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.415-419
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• 2015

Engineering is a value-adding process applying knowledge and skills in the construction industry that includes the planning, feasibility study, project management (PM), front end engineering and design (FEED), detail design, procurement, construction, supervision, and operation. Among these engineering activities, FEED is defined as a comprehensive design practice in the early design phase focused on conceptual design and basic design. It is a particularly influencing area that determines the competitiveness of procurement and construction capability of construction firms (KNIN 2013). Nevertheless, previous studies in FEED have been limited to the design process, deliverable, or particular management technique (e.g. system engineering, collaboration, information etc.). In this context, the purpose of this study is to propose a comprehensive FEED business process structure for project management of thermal power plant construction projects encompassing the entire project life cycle. And an assessment methodology for FEED functions was developed. It is expected that the proposed structure of FEED functions and FEED evaluation methodology will contribute to improvement of competitive capability of engineering, procurement, and construction (EPC) companies.

• 한국안전학회지
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• 제32권1호
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• pp.33-40
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• 2017

This paper addresses the assessment methods used to evaluate the magnetic exposure of a human to ELF EMF (Extremely Low Frequency Electromagnetic Field) which is caused by the process of power delivery from 60 Hz commercial power. These days the main concern is primarily focused on the magnetic field. For the exposure assessment, both numerical studies and laboratory experiments were studied and the results of the two compared for methodological suitability. The numerical analyses employ the Impedance Method (IM), Boundary Element Method (BEM), and Finite Element Method (FEM) and the laboratory experiments used various human phantom models made with conductivities congruent to human organs and then exposed to uniform/non-uniform magnetic fields to produce eddy currents. Under these conditions a number of examples have been evaluated and the reliability assessed to present the pros and cons of each methodology.

• Journal of Electrical Engineering and Technology
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• 제10권3호
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• pp.895-904
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• 2015

This paper presents a probabilistic approach of reliability evaluation and economic assessment for solving transmission network expansion planning problems. Three methods are proposed for TNEP, which are reorganizing the existing power system focused on the buses of interest, selecting candidates using modified system operating state method with healthy, marginal and at-risk states, and finally choosing the optimal alternative using cost-optimization method. TNEP candidates can be selected based on the state reliability such as sufficient and insufficient indices, as proposed in this paper. The process of economic assessment involves the costs of construction, maintenance and operation, congestion, and outage. The case studies are carried out with modified IEEE-24 bus system and Jeju island power system expansion plan in Korea, to verify the proposed methodology.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.270-272
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• 2002

The safety of the present railway system has been established through a lot of experience from the railway accident. But nowaday scientific safety assessment methods are exactly required to improve the safety of railway system. In this study, we focused on the methodology of probabilistic risk assessment, which has been developed mainly in the field of nuclear power industry, and considered the process to adopt this method to railway system in order to establish a scientific and comprehensive way of safety assessment.

• 한국초등과학교육학회지:초등과학교육
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• 제24권1호
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• pp.30-42
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• 2005

In this study, we developed an elementary science performance assessment material on STS theme, especially the respiration. The material is constituted with 3 components, which are performance task, students' response format and scoring system, and it also has various objective domains such as applying science knowledge, improving science attitude, using ICT, communicating and reflective thinking. It offers teachers a tool by which they can assess students' abilities on a whole. The task is made with the motivation-evoking content of 'No Smoking'. It is constructed on the activity of writing a letter to his/her father not to smoke. The students' response format is made by problem solving process, and the scoring system is matched with the steps of students' response. The material involves several theoretical backgrounds and the strengths of performance assessment. In addition, due to the detailed students' format and scoring system, it can be used practically in elementary science classroom.

• 영재교육연구
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• 제24권6호
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• pp.897-916
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• 2014

고등학교 영재학급의 학생들의 수준과 능력에 적절한 교수 학습 프로그램 개발에 대한 연구와 영재프로그램에 참여한 학생들에 대한 과정 평가의 필요성에 기반하여 본 연구는 수학 영재 학생들의 문제해결 과정에서 발현되는 창의성을 과정 중심으로 평가할 수 있는 교수 학습 사례를 제시하였다. 수학 교수 학습 소프트웨어의 일종인 GeoGebra를 활용하여 학생들이 도형을 작도하는 과정에서 GeoGebra의 인터페이스의 사용과 대수적 계산을 병행하여 다양하고 창의적 방법으로 도형을 작도하는 과정을 분석하였다. GeoGebra의 '구성단계'와 '구성단계 네비게이션 바' 기능을 활용하여 학생 개개인이 작도 과정에서 사용한 명령어, 실행 과정 및 실행 횟수를 확인하고, 이 과정에서 발견되어지는 학생들의 창의성을 도출하였다. 이를 학생 개개인의 고등학교 교육과정에 대한 선행 정도와 비교 분석하여 이러한 교수 학습 방법이 교육청 단위로 선발하는 영재교육원 뿐만 아니라 단위학교 영재학급에서도 적용 가능함을 확인하였다.

• KIEAE Journal
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• 제15권6호
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• pp.87-92
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• 2015

Purpose: The green building certification system in Korea was introduced in 2002 and developed as an improvement version of the G-SEED(Green Standard for Energy and Environmental Design) system in 2013. This study conducts surveys targeting architectural designers and users on significance of certification assessment criteria for apartment buildings on the G-SEED system and examines the differential views between the two groups on assessment criteria. Method: First, The AHP(Analytic Hierarchy Process) method was used to find importance of assessment criteria and then the importances were compared with weighted points on the certification standard. Second, the t-test was used to investigate differential views between designer and user groups on certification assessment criteria based on drawn importances. Result: (1) While designer group considered land use and transportation, energy and environmental pollution, and water circulation management as more important, user group did material and resource, maintenance management, ecological environment, and indoor environment as more important. (2) Based on t-test results, sustainable energy, water circulation system, site management, habitat, acoustical environment, and light environment were found to be different on importance between the two groups.

• 한국컴퓨터정보학회논문지
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• 제14권6호
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• pp.33-40
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• 2009

본 논문의 목적은 디지털 저작권에 기반기술로 이용될 수 있는 워터마킹 알고리즘 구성에 대한 소프트웨어 프로세스 심사에 있다. 소프트웨어 프로젝트에 수반되는 작업 프로세스들이나 관련된 작업 자원들은 서로 다른 복잡성을 갖는다. 경험 의존적인 방식은 소프트웨어 개발비용을 높이는 원인이 되며 개발된 소프트웨어의 품질도 보장 받기 어려워지다. 또한 소프트웨어 개발 프로젝트의 규모에 따라 적합하게 적용하지 �方�, 소규모의 프로젝트도 소프트웨어 개발 방법론에 거론되는 전체 항목을 수행하려다 보면 많은 개발비용이 소요되어 방법론 적용에 문제가 될 수 있다. 이러한 문제점들을 해결하기 위한 방법으로 소프트웨어 프로세스와 관련 지식들을 재활용하는 접근 방법들이 제시 되어왔다. 본 논문에서는 프로젝트의 환경과 특성 요인들을 분석하여 그들에 맞는 프로세스들을 선정하는 방법을 제시한다. 프로젝트 환경과 특성에 맞는 개발 경로 선정을 용이하게 하기 위하여 ISO/IEC 15271, ISO/IEC 12207 및 ISO/IEC 15504의 프로세스 내용에 준하여 영역 특성을 분류하여 프로젝트 개발 경로 선정 항목을 정하여 이를 본 논문에서의 적용범위로 한다.