• Journal of Radiation Protection and Research
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• v.41 no.4
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• pp.354-358
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• 2016

Background: To find out the leak characteristic of research reactor 'HANARO' building in a typhoon condition Materials and Methods: MELCOR code which normally is used to simulate severe accident behavior in a nuclear power plant was used to simulate the leak rate of air and fission products from reactor hall after the shutdown of the ventilation system of HANARO reactor building. For the simulation, HANARO building was designed by MELCOR code and typhoon condition passed through Daejeon in 2012 was applied. Results and Discussion: It was found that the leak rate is $0.1%{\cdot}day^{-1}$ of air, $0.004%{\cdot}day^{-1}$ of noble gas and $3.7{\times}10^{-5}%{\cdot}day^{-1}$ of aerosol during typhoon passing. The air leak rate of $0.1%{\cdot}day^{-1}$ can be converted into $1.36m^3{\cdot}hr^{-1}$, but the design leak rate in HANARO safety analysis report was considered as $600m^3{\cdot}hr^{-1}$ under the condition of $20m{\cdot}sec^{-1}$ wind speed outside of the building by typhoon. Conclusion: Most of fission products during the maximum hypothesis accident at HANARO reactor will be contained in the reactor hall, so the direct radiation by remained fission products in the reactor hall will be the most important factor in designing emergency preparedness for HANARO reactor.

• Journal of the Korean Geotechnical Society
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• v.33 no.5
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• pp.15-23
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• 2017

The evaluation of earthquake load on the surface is very important factor for the seismic reinforcement of existing building, and the magnitude of earthquake load depends on a shear wave velocity profile of soil under a building. To determine a shear wave velocity profile under a existing building, test method should be able to determine a reliable shear wave velocity profile under conditions such as heavy background noise and the small test area, and be sensitive to the variation of material property. In this research, HWAW (Harmonic Wavelet Analysis of Waves) method is applied to determine a shear wave velocity profile under a existing building. In this paper, through numerical simulations and field tests, the feasibility of the proposed method was shown.

• Korean Journal of Heritage: History & Science
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• v.34
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• pp.138-171
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• 2001

This paper, based on the filed survey conducted from August 14 to 21, 2000, examines the architectural characteristics of traditional dwellings of Sujeonchon(수전촌, 水田村) village. Sujeonchon village is located on the northen slope of Changbaishan Mt., Andohyun(안도현, 安圖縣) of jilin Province(吉林省), a province in the northeastern region of China. The village was established between late 1940's and early 1950's by the Korean-Chinese. Later on, some of the Korean-Chinese residents moved out of the village and presently, the residents are composed of both the Korean-Chinese and the Chinese consisting about fifty-fifty. Since the cultural background and the living custom are different from each other ethnic group, that is, the Korean-Chinese and the Chinese, their dwellings reveal some differences between them. Through the study, the architectural characteristics and distinctions of the Korean-Chinese and Chinese dwellings are found and summarized as follows: 1.The way of building layout is different between them: the Chinese mainly follows the north-south direction of building layout, while the Korean-Chinese considers the surrounding environmental condition. 2.The floor level of kitchen is different between them: that of the Chinese house is same as the outdoor earth level, while that of the Korean-Chinese is lower than the outdoor level. 3.The way of providing the kitchen space is different between them: the kitchen of the Chinese house is consist of one separate room, while that of the Korean-Chinese is open to the living area. 4.The way of heating system is different between them: the Chinese house has kang only at the sleeping area, while the Korean-Chinese install whole under-floor heating of gudeul in the living area. 5.The attitude to the way of building is different between them: the Chinese are easily adapt to the new building materials and construction method, while the Korean-Chinese are showing strong attachment to the traditional way of building. 6.The houses of the Chinese and the Korean-Chinese have their own traditional ornaments and talismans on and in the building.

• Journal of the Korean Institute of Landscape Architecture
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• v.13 no.2
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• pp.71-90
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• 1985

^x This study is composed of four Process. Process 1 suggests the background, purpose and necessity to provide with criteria for establishing Korean-style house preservation area including the present situation of the established area in our country. Also it is provided with the approach and the substantial realm to discuss the established criteria for the subject of this thesis. Process 2 dealt with theoretical parts as a premise to suggest the established criteria for the Korean- style house preservation area : 1) Original background of the Korean- style house, characteristic of the Korean traditional housing, changed situation of the Korean- style house based on the epoch, classified into the characteristic of the Korean- style house. 2) The characteristic of the Korean- style house and its values existed in the present urban areas are investigated by synthesizing such contents. 3) The significance for establishing the preservation area of the Korean- style houses in urban areas which is insufficient systematically in suggested as follows : First, establishment of the preservation area of the Korean- style houses with regard to the traditional succession of cultural properties. Second, acknowledging preservation problems of cultural properties in our country due to the world- wide tendency, preservation of historical environment of new comprehensive concept for the preservation of cultural properties. Process 3, as a case study on the establishment of the preservation area, describes a framework for investigating and analyzing the status by reviewing the present situation of the Korean- style preservation area in Seoul city which is established as the preservation area. Process 4 suggests seven criteria with regard to the establishment of the preservation area. 1) A decisive criterion for the Korean- style house to divide into Korean- style house and non- Korean style house (proper building and nonproper building) for the preservation. 2) A concrete decisive criterion for the Korean- style house with regard to valuable endowment with dominent factors in its landscape. 3) A decisive criterion for the review of the landscape preservation for the nonproper building. 4) Suggesting logical evidences for the above second and third criterion (suggesting appropriateness). 5) Dividing into following two criteria for the decision of the building condition. a) A decisive criterion of the Korean- style house's condition. b) A decisive criterion of non- Korean style house's condition. 6) A selective criterion for the preservation building after synthesizing above five criteria. 7) Final criterion for establishing the preservation area with regard to systematic particulars.

• Korean Institute of Interior Design Journal
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• v.25 no.6
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• pp.89-97
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• 2016

The aim of this study is to review Norberg-Schulz's architectural phenomenology to find out its meaning and limitations in contemporary architecture. His phenomenological trilogy, 'Existence, Space and Architecture', 'Genius Loci' and 'The Concept of Dwelling' are main texts to examine background, characteristics, meaning and limitations of his theory in relation to Structuralism and Heidegger's thoughts. Heidegger's phenomenology, especially his dwelling concept, had great impacts on forming Norberg-Schulz's architectural phenomenology. However, since his architectural phenomenology was strongly influenced by Structuralism, his theories present unstable combination of phenomenology and semiotics. And this results in instrumentalization, and overlooking body movement and socio-economical elements in his theory. In spite of these limitations, his theory also shows possibility to go beyond the theory of Modern architecture and plays important role in suggesting direction for better environment through applicability from single building to city in Postmodern architecture. Another meaning of his theory lies in presenting theoretical background for new way to interpret regionalism and specific policy tool to make town planning in Finland.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.1211-1212
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• 2008

In this paper, we propose image process modeling as a part of location based surveillance system for unauthorized target recognition and tracking in harbor, airport, military zone. For this, we compress and store background image in lower resolution and perform object extraction and motion tracking by using sobel edge detection and difference picture method between real images and a background image. In addition to, we use Independent Component Analysis Neural Network for moving target recognition. Experiments are performed for object extraction and tracking of moving targets on road by using static camera in 20m height building and it shows the robust results.

• Journal of Ubiquitous Convergence Technology
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• v.1 no.1
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• pp.3-8
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• 2007

This paper presents a set of techniques used in a real-time visual surveillance system. The system is implemented on a low-cost embedded DSP platform that is designed to work with stationary video sources. It consists of detection, a tracking and a classification module. The detector uses a statistical method to establish the background model and extract the foreground pixels. These pixels are grouped into blobs which are classified into single person, people in a group and other objects by the dynamic periodicity analysis. The tracking module uses mean shift algorithm to locate the target position. The system aims to control the human density in the surveilled scene and detect what happens abnormally. The major advantage of this system is the real-time capability and it only requires a video stream without other additional sensors. We evaluate the system in the real application, for example monitoring the subway entrance and the building hall, and the results prove the system's superior performance.

• Journal of Information Technology Applications and Management
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• v.27 no.5
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• pp.35-47
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• 2020

Global waste has become a global issue and we can see the new trend of discovery businesses established to focus on solving the waste problem using new renewable energy technology and the circular economy business model. This paper aims to study factors that impact green entrepreneurship in Thailand, such as environmental concern, organizational environment, founder demographics, education background, entrepreneurship awareness, as well as external factors of a business. The study analyzes the data from three qualitative in-depth interviews with green entrepreneur founders who started the businesses in polymer up-cycling, waste management, and renewable energy. The study finds overseas educational background to be one of the key main drivers for the entrepreneurial courage to decide to pursue a new business venture. By having the exposure toward the different culture, three entrepreneurs hands-on experiential learning through three key drivers who are composed of the can-do attitude, the willingness to be self-employed, and the way of seeking for the freedom to express their passions.

• International Journal of Advanced Culture Technology
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• v.12 no.2
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• pp.309-317
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• 2024

The conflict between Iran and Israel has been a major source of instability and security threats in the Middle East. This study analyzes the historical background and modern aspects of the Israel-Iran conflict, examining its root causes, nuclear issues, proxy wars, cyber warfare, economic sanctions, and the role of the United States. The research employs qualitative methods, including literature review and case analysis, using various sources such as academic papers, government reports, and media articles. The findings suggest that the conflict is deeply rooted in historical, religious, and political factors, and has escalated since the 1979 Iranian Revolution. The study highlights the need for dialogue, negotiation, and international mediation to resolve the conflict and maintain regional stability. The Israel-Iran conflict also provides valuable lessons for addressing the North Korean nuclear issue, emphasizing the importance of dialogue, international cooperation, and confidence-building measures.

• International Journal of High-Rise Buildings
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• v.13 no.2
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• pp.113-145
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• 2024

Bamboo is seen as a low cost, lightweight, widely available and environmental-friendly material. In Vietnam, it also connects deeply to our culture. However, it wasn't seen as a viable material for large structures before VTN Architects. Furthermore, Vietnamese cities are facing the same environmental problems as many developing metropolises in the world. Globally, climate change is a serious issue. The need for sustainable construction material is clear. The increasing development of eco-tourism in Vietnam and Asia is also a background. These become the background to the foundation and the development of bamboo architecture by VTN Architects. The journal analyses our development of bamboo construction, joints, structures, and how to use them to realise space and to create eco-friendly architecture. We will talk about our process of bamboo procurement, our construction methods, our unique joint system, how we make a frame unit and how we construct VTN bamboo structures from units.