• Title/Summary/Keyword: 공간 형태

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Application and development of a machine learning based model for identification of apartment building types - Analysis of apartment site characteristics based on main building shape - (머신러닝 기반 아파트 주동형상 자동 판별 모형 개발 및 적용 - 주동형상에 따른 아파트 개발 특성분석을 중심으로 -)

  • Sanguk HAN;Jungseok SEO;Sri Utami Purwaningati;Sri Utami Purwaningati;Jeongseob KIM
    • Journal of the Korean Association of Geographic Information Studies
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    • v.26 no.2
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    • pp.55-67
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    • 2023
  • This study aims to develop a model that can automatically identify the rooftop shape of apartment buildings using GIS and machine learning algorithms, and apply it to analyze the relationship between rooftop shape and characteristics of apartment complexes. A database of rooftop data for each building in an apartment complex was constructed using geospatial data, and individual buildings within each complex were classified into flat type, tower type, and mixed types using the random forest algorithm. In addition, the relationship between the proportion of rooftop shapes, development density, height, and other characteristics of apartment complexes was analyzed to propose the potential application of geospatial information in the real estate field. This study is expected to serve as a basic research on AI-based building type classification and to be utilized in various spatial and real estate analyses.

A study on Lemon Revolution in Kyrgyzstan and a Possibility of East-West Hegemony (키르기스스탄의 레몬혁명과 동서 패권주의 가능성 연구)

  • Hwang, Sung-Woo
    • Journal of International Area Studies (JIAS)
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    • v.14 no.2
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    • pp.477-498
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    • 2010
  • The Reasons which Rose Revolution, Orange Revolution, and Lemon Revolution had been much argued in international society are as follows: Firstly, the important fact was that authoritarian governments in Georgia, Ukraine and Kyrgyzstan were collapsed not by physical violences and military forces, but by unblooded civil movements, so called Civil Revolution. And it is also called as Colorful Revolution. Secondly, during the advance of three Civil Revolution, hegemony conflicts between Russia and western powers including US appeared. In fact, tensions between the two countries, Russia and US had already occurred in Post-soviet region after dissolution of Soviet Union. Thirdly, as a result of three Civil Revolution, there were built up fullest attentions in international societies about the possibilities of other civil revolutions, that is to say, 'Colorful Revolution' among the countries which were the republics of former USSR. In this respect, in this investigation of Lemon Revolution in Kyrgyzstan as like Rose Revolution in Georgia and Orange Revolution in Ukraine, this article examined the roles and supports toward NGOs of Western powers including US. To my opinion, it is likely that NGOs, with powerful sponsors, become political bodies working through networks and media rather than being rooted in civil society and acting on behalf of citizens. And that powerful sponsors, directly or indirectly financed by outside governments, become involved in political activities. So NGOs have been important roles in promoting civil revolution as political agencies and more political instruments of foreign governments. In the long run, through the Colorful Revolution, it is better to understand that hegemony struggle is beginning between external concerned superpowers including US and Russia, rather than hegemony struggle having directly broke out.

Soongeuimyo 崇義廟 Establishment and Soongeuimyo Jeryeak 祭禮樂 (숭의묘 건립과 숭의묘 제례악)

  • Lee, Jung-hee
    • (The) Research of the performance art and culture
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    • no.19
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    • pp.317-346
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    • 2009
  • Soongeuimyo is a shrine which has Liu Bei 劉備 as the main ceremonial figure and also Guan Yu 關羽 and Zhang Fai 張飛 as ceremonial figures as well as 8 others such as Zhege Liang, Zhao Yun, Ma Chao, Huang Zhong, Uang Bo, Zhou Zhang, Zhao Ru, and Guan Ping. Since one of the ceremonial figures is Guan Yu, it has been considered and discussed as a Guanwangmyo 關王廟. It is also witnessed by the terms called the East, South, or North tomb that were the existing Guanwangmyo, or even 'West' tomb 西廟. Of course, the relationship between Guanwangmyo and Soongeuimyo cannot be excluded because they both have Guan Yu. However, Soongeuimyo is different from Guanwangmyo in some aspects. Soongeuimyo was of a higher grade than Guanwangmyo in the quality of the ceremonial figures, and it had a completely different music and dances 악무, in which it included court music(雅樂), orchestra for court music(雅樂樂懸), and Yugilmu 六佾舞. Since the first enshrinement ritual in April 27, 1904, the period of Soongeuimyo Jerye was performed for only 4 years until the close in July, 1908, which made it less known. Furthermore, because Japanese Governor General used Soongeuimyo land as orphanages and schools for the blind and the dumb, the tomb areas were completely destroyed and the space to recall memories of Soongeuimyo was lost. However, Soongeuimyo Jerye was one of the country's important ceremonies conducted as Joong Sa 中祀 with complete assessment of traditional music and dance for Jerye. Also, as a Jerye that Go Jong 高宗 designed as a strong soldier policy after his coronation as an emperor to enhance Dae Han empire's military power, it has much significance as Dae Han empire's last national ceremony newly created besides Hwangu Jerye 圜丘祭 after his coronation.

Originating Mobility Service Brand Baedal Minjok (배달의민족과 모빌리티 서비스 브랜드의 오리지네이션)

  • Dongpyo Hong;Jae-Youl Lee
    • Journal of the Economic Geographical Society of Korea
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    • v.25 no.4
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    • pp.641-656
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    • 2022
  • This article investigates how Baedal Minjok(BaeMin) has grown to be a dominant mobility platform operator in food delivery sector in South Korea and what roles its brand and branding have played in the process, drawing on the idea of origination. For the purpose, BaeMin is considered as a typical platformized mobility service provider and origination is framed to be an appropriate analytical lens for the business sector. For the origination conception, unlike mainstream neoclassical theory and concepts, is able to deal fairly well with the issues of imperfect competition, imperfect information, and monopolistic brand rent, which are apparent in today's platformized mobility services. Drawing evidence from textual data, empirical analysis pays particular attention to discursive and symbolic dimensions of BaeMin's socio-spatial biography. It is found that national origination underpinning ethnicity comprises an important pillar of BaeMin's brand and branding. Another form of place-based origination is also observed to matter, especially in the varied relation between the mobility service brand's owner and consumers. However, this configuration of BaeMin's brand origination has yet to be fully stabilized, as it has faced with serious challenges including brand vandalism and anti-brand movement especially since its merger to German food delivery platform giant Delivery Hero in 2020. This origination crisis moment appears to be associated with a series of contractions intrinsic to so-called 'platform capitalism'.

A Study on the Evacuation Behavior of Students Due to Tsunami Occurrence in Coastal Areas: Focusing on the Great East Japan Earthquake (연안지역 지진해일 발생에 따른 학생들의 피난행동에 관한 연구 -동일본 대지진을 중심으로-)

  • Won-Jo Jung;Akihito Souda;Takashi Yokota;Tadasu Iida;Koji Itami;Myung-Kwon Lee
    • Journal of Navigation and Port Research
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    • v.47 no.1
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    • pp.18-24
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    • 2023
  • After the Great East Japan Earthquake, many reports and books that compiled testimonies of adult victims were published. Thus, refugee situations are well known, but information on the refugee situations of Japanese students is not. This is because what actions the students took and how they sought refuge from an earthquake or tsunami have not been fully recognized. The purpose of this study was to examine and analyze students' refuge behavior in the Great East Japan Earthquake and to predict the refuge behavior of students affected by future disasters. The results of the study showed that students passively acquired information about earthquakes and tsunamis and that their refuge behavior was highly dependent on adults. Immediately after an earthquake, people tended to protect themselves and stay in place until the shaking stopped. However, they tended to move to another place after the shaking occurred frequently. Students living on ria coastlines were likely to move to high places to escape the threat of earthquakes and tsunamis, whereas students living in plain regions were likely to move vertically to tall buildings, such as schools. As for the mode of movement to refugee shelters, the students arrived at the final refugee shelters in one move, and it is assumed that the refugee shelters should be decided in advance and the students should move there.

Application of Linear Schedule Chart for Schedule Management of Linear Construction Project (선형시설물 공정관리 활용을 위한 선형공정표 활용 시스템 구축 방안)

  • Lee, Jaehee;Kang, Hyojeong;Kang, Leenseok
    • Korean Journal of Construction Engineering and Management
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    • v.24 no.2
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    • pp.13-23
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    • 2023
  • Unlike building construction projects, where the activity is repeatedly carried out in a limited area, civil engineering projects such as roads and railroads are carried out in a linear type in a horizontal working space over several tens of kilometers. Each activity is managed with a station number that has a unit of distance from the starting point to the end point. For this reason, since the work location information of the activity is a major management factor, the Gantt chart system that expresses only schedule information may have limitations. In this study, authors propose a method for constructing a linear schedule chart that can simultaneously express schedule information indicating the start and finish dates and location information indicating the start and end positions of each activity, and develop a system for generating a linear schedule chart. In the study, the coordinate axes of the linear schedule chart consisted of distance and date values on the X and Y axes, respectively, and each activity was expressed as a symbol that can infer the type of work to increase the visibility of the linear schedule chart compared to the simple bar chart method. The linear schedule chart generation system was reviewed for practical applicability by utilizing the actual schedule data of bridge structures in a railroad project.

Evaluation of Traffic Vibration Effect for Utilization of Abandoned Mine Openings (휴·폐광산 채굴 공동 활용을 위한 교통 진동 영향 평가)

  • Hyeon-Woo Lee;Seung-Joong Lee;Sung-Oong Choi
    • Tunnel and Underground Space
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    • v.33 no.2
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    • pp.95-107
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    • 2023
  • In this study, the effect of repeated traffic vibration on the long-term stability of mine openings is analyzed for re-utilization of abandoned mine galleries. The research mine in this study is an underground limestone mine which is developed by room-and-pillar mining method, and a dynamic numerical analysis is performed assuming that the research mine will be utilized as a logistics warehouse. The actual traffic vibration generated by the mining vehicles is measured directly, and its waveform is used as input data for dynamic numerical analysis, As a results of dynamic numerical analysis, after 20,000 repetitions of traffic vibration, the mine openings is analyzed to be stable, but an increase in the maximum principal stress and an additional area of plastic zone are observed in the analysis section. As shown in the changes of displacement, volumetric strain, and maximum principal stress which are measured at the mine opening walls. It is confirmed that if the repeated traffic vibration is continuously applied, the instability of the mine openings can be increased. Authors expect that the results of this study can be used as a reference for basic study on utilization of abandoned mine.

Development of Integrated Management System Based on GIS on Soft Ground (GIS 기법을 이용한 연약 지반 시공 관리 시스템의 개발)

  • Chun, Sung-Ho;Woo, Sang-Inn;Chung, Choong-Ki;Choi, In-Gul
    • Journal of the Korean Geotechnical Society
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    • v.23 no.7
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    • pp.37-46
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    • 2007
  • In the practice of preloading method for soft ground improvement, field engineers need information of ground properties, construction works and field monitoring on ground behaviors of the site. So, integrating all these informations into one database can provide more efficient way for managing and utilizing the data for construction management. In this study, integrated system for construction management of ground improvement sites under preloading is developed. The developed system consists of database (DB) and application program. The database contains all collected data in a construction site and processed data in the system with their geographic information. All informations in the database are standardized from the result of data characterization. Application program performs various functions on managing and utilizing information in the database; pre- and post- data processing with graphic visualization of output, spatial data interpolation, and prediction of ground behavior using field measuring data. And by providing integrating informations and predictions over entire project area with comprehensible visual displays, the applicability and effectiveness of the developed system for construction management were confirmed.

A Study on Structural Maintenance of 'Old Wall' Designated as National Registered Cultural Heritage (국가등록문화재로 지정된 옛 담장의 정비 양상)

  • So, Hyun-Su;Jeong, Myeong-Seok
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.41 no.1
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    • pp.21-34
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    • 2023
  • This study identified the materials and construction methods of 'Old Wall' in 13 villages which were designated as National Registered Cultural Heritage at the time of designation and examined the their structural changes based on field survey. The results are as follows: First, the 'Old Wall' consisted of 10 Soil-Stone Wall and 5 Stone Wall. At the time of designation, Stone Wall, which was built irregularly by dry-construction of natural stones, is similar in shape, but Soil-Stone Wall showed difference by the construction method of making used stones, joints, and faces. Second, the study extracted the changes of 'Old Wall' by repair and examined the changes of construction methods as well as the substitution and addition of materials of structure. The wall-roof was built with cement roof-tile and asbestos slate which have the advantage improve durability and cost-effectiveness. In addition, tile-mouth soil was added to korean traditional roof-tile to prevent rainwater from flowing in. Besides, to improve constructional convenience, the natural stone of the wall-body was replaced with blast stone, float stone and cut stone. Cement block, cement brick and cement mortar were frequently used to repair as well. As Soil-Stone Wall was transformed from irregular pattern-construction to comb pattern-construction and wet-construction was changed to dry-construction, it caused landscape and structural problems. Also, the layer of cement mortar applied to wall-foundation blocked the flow of rainwater that was induced by dry-construction of natural stones. Third, the study regarded that the problem with the repair of 'Old Wall' may occur as it is located in living space, because the owner of the wall could repair for the minor damages without technical knowledge. In addition, it is difficult for repair companies in charge of maintenance of Cultural Heritage to supply local materials, and it is differential construction specifications are not applied.

Fundamental studies on thermosolutal convection in mercurous bromide(Hg2Br2) physical vapor transport processes (브로민화 수은(I)(Hg2Br2) 물리적 증착공정에서 온도농도대류의 기초연구)

  • Geug Tae Kim;Moo Hyun Kwon
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.33 no.3
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    • pp.110-115
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    • 2023
  • During the Hg2Br2 physical vapor transport process, with increasing the partial pressure of component B, PB from 40 Torr to 200 Torr, a unicellular convective flow structures move from the crystal growth region to the center region in the vapor phase. The boundary layer flow is dominant for PB = 40 Torr, and the core region flow is dominant for PB = 200 Torr. The flow in the vapor phase shows a three-dimensional convective flow structure with a single cell (unicellular) for PB = 40 Torr and 200 Torr, exhibits an asymmetrical flow with respect to the x, y central axis under the horizontally oriented configuration with an aspect ratio (length-to-width) of 3 and linear conducting walls. The critical temperature difference between the source and crystal region is about 30 K. The total molar flux of Hg2Br2 increases with the temperature difference until the total molar flux reaches the critical value. At the critical total molar flux, the total molar flux abruptly decreases.