• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 A
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• pp.23-26
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• 2003

The vector field histogram(VFH) uses a two-dimensional Cartesian histogram grid as a world model. The VFH method subsequently employs a two-stage data-reduction process in order to compute the desired control commands for the vehicle. In the first stage the histogram grid is reduced to a one dimensional polar histogram that is constructed around the robot's momentary location. Each sector in the polar histogram contains a value representing the polar obstacle density in that direction. In the second stage, the algorithm selects the most suitable sector from among all polar histogram sectors with a low polar obstacle density, and the steering of the robot is aligned with that direction. We applied this algorithm to our four-legged robot.

• 품질경영학회지
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• 제29권2호
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• pp.76-92
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• 2001

As service firms continue to seek unique sources of sustainable competitive advantage, service quality has been discussed as a potential alternative to traditional skills and sources. The information of customers is generally believed to be a key component in creating corporate responsiveness to customer requests. In order to develop and maintain long-term close relationships with customers(CRM), service firms need to build an effective and ongoing service quality information system(SQIS). Service firms that formally collect customer-related information and internal service quality information were to be more responsive. The purpose of the present study is twofold. 1. How to nicely get the information on the service quality. 2. How to build a SQIS. One of numerous examples from financial service-sector firms is given to show that SQIS can be developed to improve service quality This paper investigates SQIS of a Korean commercial bank as an example. Implications and strategies for building an effective SQIS for financial service-sector firms are discussed, and directions for future research are indicated.

• 한국시스템다이내믹스학회:학술대회논문집
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• 한국시스템다이내믹스학회 2002년도 추계학술대회발표논문집
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• pp.103-122
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• 2002

Construct ion sector government policies are targeted towards regulation than facilitation and management. This approach often fails to integrate different segments of the public and private and seems to be inadequate in encouraging the private sector to achieve better quality construction. This situation suggests a need for a better and systematic approach for construct ion policy making. This paper suggests a model-based approach to public policy making using system dynamics approach. Singapore government's policy making efforts to encourage the use of prefabrication are discussed as an application example. This paper presents system models which discuss strengths and weaknesses of the current construction system in Singapore using casual loops, and highlights the feedback processes that would be useful in decision making for the government. Based on these system dynamics models, this paper identifies four major potential policy interventions policy interventions.

• International Journal of Advanced Culture Technology
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• 제8권2호
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• pp.209-215
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• 2020

Russia has an interesting history as a donor, recipient and re-emerging donor in international development assistance (IDA). This article introduces the history, policy and challenges of Russian IDA, and provides suggestions for such challenges. The main barrier to Russian IDA is the absence of a central government agency and Russia can learn from other country's experience. Concerning lack of data on the provision of assistance to each sector of IDA and the large number of recipient countries, Russia can learn from Korea particularly in education sector. With respect to building a system ensuring the efficiency of the Russian IDA works, a tool for analysis of the effect of the Russian IDA programmes may be drawn in consultation with international institutions or successful programmes of other donor countries.

• World Technopolis Review
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• 제1권2호
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• pp.107-117
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• 2012

As reflected in the title, the main objective of the paper is to explore an appropriate approach to promote technological innovation for developing countries. Aiming to this goal, the paper studies three main innovation system approaches, whose implantation is being attempted in developing countries: first, national innovation systems (NIS), which was developed in OECD countries; second, the system of innovation for development (SID), which is a concept that tries to adapt NIS to developing countries; and third, inclusive innovation which is a pro-poor innovation system. Based on the strengths and the weaknesses of each concept and their potential adaptation in developing countries, the paper proposes an integrated approach of innovation system for developing countries. Compared to developed countries, the concept of innovation system in developing countries should be more complex because it involves not only the formal sector such as enterprises, universities, research institutes, government, and financial system but it also involves NGOs, informal companies, grassroots inventors, local and indigenous knowledge, etc. The last part of the paper discusses the ideas that innovation stakeholders in developing countries can use to promote their proper innovation system.

• KIEAE Journal
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• 제10권4호
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• pp.19-28
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• 2010

As design tools, building performance certification systems can be applied to provide adequate guidelines on design process to create environment-friendly buildings. Domestic certification systems of residential building took effect by doing supply to designers and contractors from affiliated organization of governments in the early 2000s. As a result, Building Energy Rating System, Apartment Performance Rating System, Green Homes and other means to promote green designs have been operated. International trends of applying certification systems were started in the early 1990s as forms of LEED in USGBC, BREEAM in BRE, GBTool Canada. These systems aim to evaluate building performance in line with the Climatic Change Convention and realize sustainable building design. In 2009, residential buildings accounted for the largest portion of the internal real estate market with 67.9 percent according to the National Statistical Office data. And for 18 years since 1991, apartments among constructed residential buildings have ranked top taking up 77.7% as of 2009. Apartment performance evaluations accordingly are to promote to constitution of improving tenant quality of life, the residential environment and saving energy and resources in the internal building market. The purpose of this study is to compare and analyze valuation bases of each sector in evaluation systems of residential buildings at home and abroad to upgrade current systems through reflecting the characteristics of residential buildings. Implementation of this study basically include comparison of valuation bases and partial analysis on properties of rating systems to suggest requisites for improvement in building performance certification.

• 한국지열·수열에너지학회논문집
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• 제18권4호
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• pp.45-57
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• 2022

The Ministry of National Defense of the Republic of Korea is showing a lot of interest in net zero-energy buildings (NZEBs) to reduce energy consumption of military facilities and to promote green growth policy in military sector. The application of building passive technologies and renewable energies is essential to achieving NZEBs. This paper analyzed energy performance and energy cost on the conventional heating and cooling system (baseline scenario) and three different alternative scenarios (ALT 1, ALT 2 and ALT 3) applied in a hypothetical military building. A building modeling and simulation software (DesignBuilder V6.1) with EnergyPlus calculation engine was used to calculate the energy consumption for each scenario. Overall, when the GSHPs are applied to both space airconditioning and domestic hot water (DHW) production, Alt-2 and Alt-3, the amount of energy consumption for target building can be greatly reduced. In addition, when the building envelope performance is increased like Alt-3, the energy consumption can be further reduced. The annual energy cost analysis showed that the baseline was approximately 161 million KRW, while Alt-3 was approximately 33 million KRW. Therefore, it was analyzed that the initial construction cost increase could be recovered within about 6.7 years for ALT 3. The results of this study can help decision-makers to determine the optimal strategy for implementing GSHP systems in military buildings through energy performance and initial construction cost assessment.

• 한국건설관리학회논문집
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• 제23권6호
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• pp.65-75
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• 2022

성과측정은 체계적인 관리와 개선을 위한 중요한 활동이다. 건설산업에서도 성과측정을 위한 지표 개발 등의 다양한 연구가 꾸준히 진행되어왔다. 하지만 성과측정을 위한 데이터 수집에 큰 노력이 필요하여 실제로 성과측정이 수행되는 경우는 적었다. 특히 제도를 통해 건설 프로젝트 데이터를 수집해 온 우리나라 공공부문과 달리 민간부문에서는 프로젝트의 성과를 파악할 수 있는 데이터가 전무한 실정이다. 한편, 우리나라는 건설공사 감리를 통해 건축현장 시공단계에서의 품질, 안전 등을 총체적으로 확인하는 제도를 갖추고 있다. 감리 과정에서 건축현장의 성과를 파악할 수 있는 중요 데이터가 생성되고 감리보고서는 「건축법」에 따라 제출이 의무화되어 있다. 본 연구는 민간 건축현장의 성과측정을 위해 감리보고서의 데이터를 활용하고자 한다. 선행연구와 감리보고서를 분석하여 예비성과지표를 선별하고 전문가 인터뷰를 통해 건축현장의 6가지 성과영역과 15개 성과지표를 도출하였다. 다음으로 전문가 설문조사를 실시하여 성과지표의 데이터 수집 가능성을 검증하였고, 성과영역 및 성과지표의 중요도를 도출하였다. 감리보고서 데이터를 기반으로 도출된 본 연구의 성과지표는 앞으로 민간 건축부문의 성과측정의 실효성을 높일 것으로 기대된다.

• 한국지열·수열에너지학회논문집
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• 제19권4호
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• pp.27-38
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• 2023

The Government the Republic of Korea is showing a lot of interest in net zero-energy buildings (NZEBs) to reduce energy consumption of buildings and to promote green growth policy in construction sector. The application of building passive technologies and renewable energies is essential to achieving NZEBs. Green remodeling reinforced the insulation of the exterior walls and roofs of the buildings and replaced high-efficiency windows and doors. In this study, the energy performance before and after green remodeling applied in a detached house was comparatively analyzed for baseline scenario and three different ones, ALT 1, ALT 2 and ALT 3. A building modeling and simulation software (DesignBuilder V7.0) with EnergyPlus (V9.4) calculation engine was used to calculate the energy demand and energy consumption for each scenario. Based on the calculation results of the building's energy demand for baseline, it was determined that the target building required more heating energy than cooling energy. The simulation results also showed that the implementation of building envelope performance improvement technologies (ALT 1) could notably decrease the heating energy consumption of the building. After the remodeling (ALT 1), the source energy consumption per unit floor area was assessed to be reduced by 65.2%, compared to prior remodeling of 338.7 kWh/m² -y. Meanwhile, ALT 2 can achieve energy savings of 67.7% and ALT 3 can achieve savings of 73.1%. Following completion of the remodeling project, actual construction costs, and on-site measurements and verification results will be gathered and compared with the simulation results. Additionally, economic analysis including construction costs and payback period will be conducted using actual site data.

• 한국콘텐츠학회논문지
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• 제7권2호
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• pp.170-179
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• 2007

본 연구는 효율적 재난대응체계 구축을 위한 네트워크체계를 구축하고자 일본과 한국의 재난 대응 사례를 비교 분석하였다. 일본의 경우 중앙정부와 지방정부 등의 공공부문과 민간부문 및 NGO간 상호 네트워크에 의해서 협력적으로 재난에 대응하고 있으나, 한국의 경우 각 부문간 네트워크 협력체계 구축이 미약하여 더 많은 재난피해를 불러일으키고 있었다. 즉 우리나라 재난대응 서비스는 그동안 공공부문에서만 담당해 왔던 것이다. 공공부문은 관리에 필요한 자원을 광범위하게 가지고 물리적 강제력과 법적 권한의 보유로 재난관리에 강력하게 대응할 수 있는 조직이다. 그러나 현대사회의 특성상 중앙정부와 지방정부 등의 공공부문의 노력만으로는 재난관리를 효과적으로 수행하기에 한계가 있음이 밝혀졌다. 따라서 향후 한국이 재난대응을 효율적으로 수행하기 위해서는 국가재난대응 통합 네트워크 체계를 마련하고, 각 주체들을 연결할 수 있는 매개조직이 필요하며, 재난대응 네트워크에 참여하는데 있어 각 기관들의 역할과 기능 분담을 위한 재난대응 교육 훈련 프로그램이 요구된다.