• 대한수학회보
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• 제51권4호
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• pp.1135-1144
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• 2014

A finite group G is called a SB-group if every subgroup of G is either s-quasinormal or abnormal in G. In this paper, we give a complete classification of those groups which are not SB-groups but all of whose proper subgroups are SB-groups.

• 건축역사연구
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• 제2권1호
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• pp.54-73
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• 1993

This study focuses on the staffs of the Governmental Organization of Construction who actually led this organization. Two main points of this study are as follows; 1) The composition and appointment of staffs, before and after the Korea-Japan Treaty in 1907, are evaluated, and 2) The working and academic career of each personnel are analyzed in connection with understanding of internal characteristics of this organization. Special attention is given to Korean personel and Japanese engineers who undertook a leading role. Korean engineering staffs were very few in number. It is thought, viewing their records of careers, that almost all of them didn't have any engineering basis, and simply they had some relations to Japan. It is certain that their role in this organization was interpreters using their Japanese language ability, and their roles were only limited to non-technical areas, if any. The early engineers from Japan were selected among the officials with comparatively rich careers of the Temporary Architectural Dept. or the Temporary Engineering Dept. of Custom House in Japan. But, in later days, the quality of Japanese engineers changed to the level of premature without practical experiences who unwillingly came to Korea to have a job under the depression of construction economy of Japan. The academic careers of Japanese engineers were various, from self-taught to regural college education, but the leading engineers were from Tokyo University. The civil engineers became high-level technical officials in the Government-General after the Japanese Annexation of Korea. But, sometimes later, many of the architectural engineers became practicing architect managing design offices on private basis.

• 국제초고층학회논문집
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• 제6권1호
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• pp.49-72
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• 2017

The Guangzhou International Finance Centre (IFC) is a landmark building that symbolizes the emerging international strength of Guangzhou, China's third largest city. It is also one of the dual iconic towers along the main axis of Guangzhou Zhujiang New Town. Arup adopted a total engineering approach in embracing sustainability and aiming at high efficiency solutions based on performance-based design principles covering structures, building services, fire engineering, vertical transportation, and façade performance to constitute an efficient and cost-effective overall building design. Through dynamic integration of architectural and engineering principles, Guangzhou IFC represents a pioneering supertall building in China. It adopts a diagrid exoskeleton structural form that is clearly expressed through the building's façade and gives the building its distinctive character. The aerodynamic shape of the building not only presents the aesthetic quality of elegant simplicity, but also reduces the effects of wind, thereby reducing the size and weight of the structure. State-of-the-art advanced engineering methods, such as optimization techniques and nonlinear finite element modelling, were applied in parallel with large-scale experimental programs to achieve an efficient and high-performance design taking into account the constructability and cost-effectiveness for a project of this scale.

• 국제초고층학회논문집
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• 제1권4호
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• pp.271-281
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• 2012

Tianjin Goldin Finance 117 tower has an architectural height of 597 m, total of 117 stories, and the coronation of having the highest structural roof of all the buildings under construction in China. Structural height-width ratio is approximately 9.5, exceeding the existing regulation code significantly. In order to satisfy earthquake and wind-resisting requirements, a structure consisting of a perimeter frame composed of mega composite columns, mega braces and transfer trusses and reinforced concrete core containing composite steel plate wall is adopted. Complemented by some of the new requirements from the latest Chinese building seismic design codes, design of the super high-rise building in high-intensity seismic area exhibits a number of new features and solutions to professional requirements in response spectrum selection, overall stiffness control, material and component type selection, seismic performance based design, mega-column design, anti-collapse and stability analysis as well as elastic-plastic time-history analysis. Furthermore, under the prerequisite of economic viability and a series of technical requirements prescribed by the expert review panel for high-rise buildings exceeding code limits, the design manages to overcome various structural challenges and realizes the intentions of the architect and the client.

• 국제학술발표논문집
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• The 7th International Conference on Construction Engineering and Project Management Summit Forum on Sustainable Construction and Management
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• pp.153-158
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• 2017

Procurement system of public construction projects in Japan is changing with diversity in rapid pace. The quality assurance and risk management of construction projects should be more certain as the projects are turning into larger scale and more complexed. The clients in the public sector will want to make the relation of responsibility among the client, the designer (architects and engineers), and contractor clearer in terms of role and risk. Public-Private Partnership (PPP) is one of the methods for collaboration of the public sector and the private sector in public construction projects where the public utilizes the ability and suggestion of the private. Private Finance Initiative (PFI), Design-Build-Operate (DBO), market testing, designated manager system, outsourcing of tasks in local governments are well-known as examples of PPP in Japan. Indeed, there is an obvious trend that Design-Build (DB) is adopted in public construction projects in many countries including Japan. In this paper, the public construction projects in various procurement systems are surveyed and analyzed. They are not limited within the traditional procurement, Design-bid-Build, a separate order system of design and construction. Design-Build or PFI are adopted. In particular, contract by wide range including maintenance of equipment can be found. On the other hand, modification from originally typical PFI is taking place, such as concept design and project finance are removed from the roles and the tasks of the special purpose company (SPC) in PFI. Standard roles and tasks in a construction project are modeled in this paper.

• 한국건설관리학회논문집
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• 제15권5호
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• pp.147-159
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• 2014

2008년 글로벌 금융위기 이후 국내의 주택시장은 침체기를 겪고 있으며 이에 따라 주택가격의 하락, 임대주택가격의 상승등과 같은 주택시장의 문제점이 발생하였다. 주택시장의 정상화를 위해 정부에서는 다양한 주택정책을 발표하였으나 주택시장은 아직 회복세를 보이지 않고 있다. 따라서 본 연구는 주택시장의 침체 원인 분석하기 위해 주택 시장의 주요 참여자인 주택공급자와 주택 수요자를 기존의 수요 공급 원리에 의해서 분석하며 이들의 거래의사에 영향을 미치는 심리적 요인을 행동경제학 이론을 바탕으로 분석한다. 이의 분석 결과를 바탕으로 시스템다이내믹스 시뮬레이션 방법론을 사용하여 발표된 정책의 실효성을 검증한 결과 정책의 입안 기간에 따라 주택 거래량과 주택담보대출 총액이 영향을 받는 것으로 나타났다.

• 건축역사연구
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• 제12권3호
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• pp.39-52
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• 2003

The purpose of this study is to show the constructional activities conducted by the Buddhist craftsmen of Bumeo-sa, especially to focus on the government constructions at Dongrae province in the 1700s. The result is as follows: 1) In the early 1700s, Bumeo-sa developed to become a great Buddhist temple and was be able to possess a large number of workers and craftsmen. On the base of these workforce and skill, the Buddhist craftsmen of Bumeo-sa played the most leading roles for the government constructions until the late of 1700s. 2) Though the conditions of finance and workforce at Dongrae province were not good enough at that time, several huge government constructions could be promoted successively, owing to Bumeo-sa's supports. 3) Above all, the Buddhist craftsmen in Bumeo-sa monopolized the construction of Dongrae Hyangyo in the middle of the 1700s. But the private craftsmen got replaced their main roles in the government and temple constructions since the late of the 1700s.

• The Journal of Asian Finance, Economics and Business
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• 제7권9호
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• pp.737-746
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• 2020

This study was conducted to analyze the impact of industrial park development on the livelihood of people living around the industrial parks in the Central region of Vietnam. The data was collected from 394 households living around these industrial parks; using the data, the authors employed a quantification model among factors affecting the income of families living in the surroundings of industrial parks and they calculate the adaptive capacity of households to consider the impact of the development of industrial parks on people's livelihood. Research findings show that industrial park development has both positive and negative impacts on the livelihood of people living around the industrial parks. Specifically, the factors that positively affect the income of households living around industrial parks include the area of land acquired due to the construction of industrial parks, the transportation system after the industrial park has located there, and the number of jobs available when the industrial park is being built. The factor that negatively affects the income of households living around industrial parks when they are under construction is the number of unemployed laborers. The study also calculated that the adaptive capacity of the people after the industrial park development is a coefficient of 0.376.

• 교육시설 논문지
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• 제26권2호
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• pp.11-18
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• 2019

There is a growing demand for public kindergartens due to the problem of private kindergartens. However, when the kindergarten is built in the residential land development area, the cost of purchasing the land increases, and the overall project cost is increasing. This situation puts a lot of burden on educational finances. Therefore, to reduce the cost of establishing a kindergarten, it is required to revise related laws including act on the special cases concerning the procurement, etc. of school sites. The purpose of this study is to propose the revised laws to expand public kindergartens. In this study, the present situation of infants and kindergartens was analyzed through policy data and statistics. And the analysis of the investment evaluation data also analyzed the problems in establishing kindergarten. In addition, we conducted surveys and FGI analyzes on school sites and kindergarten related laws and regulations. Finally, this study aims to find a way to amend related acts of urban and architectural Planning for Invigoration of Public kindergarten establishment by analysis data.

• 대한건축학회논문집:계획계
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• 제34권6호
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• pp.127-134
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• 2018

The purpose of this study is to derive a model of urban regeneration business using idle facilities in the old city center. The scope of the study was set as empty houses and empty stores owned by private companies, and analyzed the 50 central city revitalization projects using idle facilities in 14 local cities in Japan. The results of this study are follows; First, as an urban regeneration strategy using idle facilities in the old town, it was a combination of other functions centering on commercial functions or introducing new functions required in the city center. Second, various financial supports have been provided to induce the utilization of idle facilities by the private sector, and different strategies have been implemented for businesses that need maintenance first. Third, based on the analysis results, it was possible to derive urban regeneration business model. Fourth, in order to operate smooth business, it is a need for an organization that is in charge of reviewing the consistency of upper-level planning and urban guiding functions such as urban revitalization plan, balance review of expenditure and revenues by cost subsidy and loan repayment, consultation among the business partners.