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A Case Study on the Construction of 3D Geo-spatial Information for Digital Twin Implementation (디지털 트윈 구현을 위한 3차원 공간정보 구축사례 연구)

  • KIM, Seung-Yub;LEE, Ho-Hyun;CHOI, Eun-Soo;GO, Je-Ung
    • Journal of the Korean Association of Geographic Information Studies
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    • v.23 no.3
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    • pp.146-160
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    • 2020
  • In the 4th industrial revolution, research on solving urban problems using ICT technology is emerging. Representatively, research is being conducted mainly focusing on smart cities. 3D geo-spatial. Various case studies on smart cities are being conducted to solve urban problems, and in order to effectively implement smart cities, it is implemented on the basis of a digital twin interconnecting physical and virtual environments. To implement a digital twin, the concept of space is essential, and spatial information that composes the real world is also essential. Therefore, in order to implement the digital twin, this study conducted a study on the construction and modeling of 3D geo-spatial information based on the national spatial information establishment regulations and the international standard CityGML for buildings, water facilities, and transportation facilities in Jeonju. In Jeonju, the research area, the LOD was defined, and the possibility of digital twin based on geo-spatial information was determined through data collection, analysis, and construction for each detail. In this study, it is meaningful that a plan to construct geo-spatial information for the implementation of a digital twin is presented, and the result of the construction is modeled as an urban standard model. The results of study are expected to be used as reference for detailed construction plans and standard establishment by governments and local governments promoting smart city and digital twin construction in the future.

A Case Study on Child-Friendly Public Design in The Surrounding Areas of Shenzhen Elementary Schools in China (초등학교 주변구역의 아동친화도시형 공공디자인에 관한 연구 -중국 선전시(深圳市)를 연구대상으로-)

  • Zhao, Duo-Duo;Hong, Kwan-Seon
    • The Journal of the Korea Contents Association
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    • v.20 no.6
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    • pp.354-366
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    • 2020
  • It is the purpose of this study to propose improvement options and guidance methods for public design around elementary schools from the perspective of child friendly cities. The study first takes the Convention on the Rights of the Child as a benchmark, and integrates relevant United Nations documents on child friendly cities and those on child friendly cities in Shenzhen to derive five principles of public design around child friendly schools, namely, safe environment, protective measures, pedestrian friendly environment, independent environment for going out, convenient and fun environment. Subsequently, this study investigates the public design of 25 elementary schools in Futian District, Shenzhen, China, evaluates the quality level of public design according to the five principles, and points out the problems that exist in public design with lower quality level. Furthermore, in response to the existing problems of public design around elementary schools in Shenzhen, this study improves them from three aspects: public space, public facilities and public media design. More importantly, the design reinforces the safety and child protection of the environment, facilitates children's walking and independent going out, and provides a convenient and fun design that meets the physical and psychological needs of children, designed to be child-friendly. Not only does this design provide guidance for the construction of the environment around the elementary school in Shenzhen, but also provides guidelines for the construction of a child-friendly city in Shenzhen.

Study of Annoyance in Relation to Exposure Time to Demonstration Noise (집회소음 노출시간에 따른 성가심도 연구)

  • Park, Hyung-Woo;Bae, Myung-Jin
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.16 no.6
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    • pp.103-108
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    • 2016
  • The size of urban areas is currently growing and the functions of cities are becoming increasingly complicated. Furthermore, more people are living in cities. The life of urban is getting closer and linked with neighboring people in many parts. In particular, people are making artificial noise, even though it might not consciously be noticed, in their daily live. Seoul is the most crowded place in Korea and the noise levels are 73dB or higher. People living in cities are exposed to noise pollution. In particular, loudspeakers used during demonstrations or to generate publicity, cause considerable noise, which in turn can be related to stress. Moreover, the noise restrictions defined by law are not adhered to. If enhanced noise regulations, no matter how residents are not forced to be a great stress field close to the noise and reduces the loudness -5dB do not feel well if the difference. Limiting the duration of noise rather than reducing the volume thus is a much more plausible way of reducing the damage caused by noise pollution. If the stress caused by the noise, you will see people or vehicles holding a megaphone at the roadside is not good for health if it may be a wise way to live that is getting rid of the noise pollution so quickly out of the area.

A study of particulate matters in Korea (우리나라 일부지역의 입자상 물질 농도에 대한 연구)

  • 손부순;공미연;박종안;양원호;김종오
    • Journal of environmental and Sanitary engineering
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    • v.18 no.4
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    • pp.24-35
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    • 2003
  • Recent epidemiologic studies revealed that the concentration of air pollutants and fine particulated matter have some effects on health status and are associated with increased mortality and morbidity. The purpose of this study was to characterize background mass concentration of fine particle (PM2.5) and metallic composition from September 2001 to August 2002 in comparison with a medium city, Asan and metropolitan city, Seoul. Conclusively, proper management for fine particles was required in a medium city, Asan, considering the concentrations of metallic elements in fine particles in Asan were relatively higher than those in Seoul. The results were as followed. 1. Average mass concentrations of fine particles in Asan and Seoul were 37.70(${\pm}18.41{\;}{\mu}g/\textrm{m}^3$) and 5.83(${\pm}38.50$) ${\mu}g/\textrm{m}^3$, respectively. When the weather conditions were classified as normal and yellow-sand, measured average mass concentrations of fine particles in yellow-sand weather condition was significantly higher than those of normal weather condition in both cities (p<0.05). 2. Depending on seasons, measured average mass concentrations of fine particles in Asan and Seoul in spring were 47.76(${\pm}19.07$) ${\mu}g/\textrm{m}^3$m and 61.53 (${\pm}4.37$) ${\mu}g/\textrm{m}^3$, respectively. In summer, the average mass concentrations of fine particles in Asan and Seoul were 29.44(${\pm}9.85$) ${\mu}g/\textrm{m}^3$ and 25.42(${\pm}8.10$) ${\mu}g/\textrm{m}^3$, respectively. Especially, the concentration was the highest in spring and the lowest in summer among four seasons. 3. Average concentrations of manganese(Mn), iron(Fe), chromium(Cr), cadmium(Cd), lead(Pb) and silicon(Si) in fine particles in Asan were significantly higher in Seoul (p<0.05). Average concentration of Si in fine particle in Asan was statistically higher than that of Seoul during yellow -sand condition (p<0.05). 4. Considering the characterization of four seasons, average Pb concentration of fine particle in Asan is significantly higher than that of Seoul in spring(p<0.01). In summer, average Mn and Cr concentrations of fine particle in Asan is higher than those of Seoul (p<0.05). Average Mn, Fe. Cr and Si concentrations in fall (p<0.05), and average Mn, Fe, Cr, Pb, and Si concentrations in winter (p<0.05) in Asan were higher than those of Seoul, respectively. 5. Mass concentrations of each Mn, Fe, Cd and Si in fine particles were significantly correlated with both cities. In normal weather condition, Mn, Cu and Si concentrations are statistically significant in Asan, while Mn, Fe, Cu and Si concentrations are statistically significant in Seoul. Mn, Fe and Si concentrations in both cities were statistically significant during yellow-sand weather.

Factors Affecting the Diffusion of Health Center Information System (보건소 정보화시스템의 도입에 영향을 미친 요인)

  • Do, Young-Gyoung;Lee, Jung-Gyu;Park, Gi-Dong;Kim, Chang-Yup;Kim, Yong-Ik;Lee, Jin-Yong
    • Journal of Preventive Medicine and Public Health
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    • v.36 no.4
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    • pp.359-366
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    • 2003
  • Objectives : This study was conducted to review the diffusion process and factors affecting the adoption of the Health Center Information System (HIS). Methods : Data were collected from POSDATA (private company), MOHW, other Ministries and local governments. To specify the date of adoption, supplementary information was collected from 40 health centers. The following three kinds of factors were analyzed. Internal factors included type, size, and innovativeness of health centers. Community factors were composed of population sire, economic status, and level of education. Organizational environmental factors consisted of information score of the municipalities, financial support of the from central government, and the neighborhoodness of innovator health centers. Results : All health centers in the metropolitan cities of Seoul, Gwangju and Jeju adopted the HIS. The laggards were those in the metropolitan cities of Busan (18.8%), Incheon (20.0%) and Daejun (20.0%), and cities with population more than 300,000 (54.8%) and counties with health center hospitals (47.1%). Financially supported rural health centers adopted the HIS more rapidly than those not supported. The factors identified as being statistically significant (p<0.05), from a univariate analysis by Kaplan-Meier method, were: (1) internal factors of the type, size and innovativeness of health centers; (2) community factors of population size and economic status; (3) organizational environmental factors of the central government financial support and the neighborhoodness of innovator health centers. A multivariate analysis, using a Cox proportional hazard method, proved the innovativeness of health centers, central government financial support and the neighborhoodness of innovator health centers, were statistically significant (p<0.05). Conclusions : The innovativeness of health centers, financial support from central government and the neighborhoodness of innovator health centers, rather than community factors related to regional socioeconomic status, affected ffe adoption of the HIS in health centers. Further in-depth studies, modifying the MOHW's strategy to propagate the HIS to the laggard health confers, are recommended.

A Study on the Status of Physical Exercise of Community People in City Area (도시지역주민의 운동실태와 관련요인)

  • 한중호;남철현
    • Korean Journal of Health Education and Promotion
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    • v.8 no.1
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    • pp.68-86
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    • 1991
  • This study was carried out to investigate consciousness level of physical exercise and analyze factors affection to the practice of exercise. The main purpose of the study was to give basic and necessary data in developing of program regarding to the physical exercise of the people and social athletics. This study was conducted by trained surveyers, for dweller in three cities(Seoul, Taegu and Ulsan) during January 4. 1990 to January 24. 1990. The results of this study can be summarized as follows 1. The subject of criticism an investigation for general charactristic be conducted in Seoul, Taegu and Ulsan city area an objective 417 person, 432 person and 366 person was among those comparatively little more by male was higher rate than female. Those in classification was adopted by age group 20 years old adult 41.3% of most higher rate, age group evaluation, were 24.9% and other group were 18.4% comprehensively appearanced by adult group has most many value rate. 2. An objective of investigation survey was made to personnel were comparative an educated level significantly higher such as college graduated 48.8% this rate of value has most higher, High school graduated ; 30.1% and middle School gratuated were 11.7%. In addition the native comes from large city, Farming and fishing villages an rural area rate were shown as 29.6%, 28.4% and 19.9% each other. There by classification of occupational job was shown by students has 27.4% are most higher significantly, also there sales and service field job appearanced 15.1% and expert technical job is 9.0% Although nonreligion person rate were 37.3%, buddist, Christianity, Roman Catholicism all them each other shown 33.6%, 16.7% and 12.4%. An evaluation in economic situation value rate was appearanced by middle class level 61.7% and higher and low level are 14.4% and 23.9% with each other and married were 59.2%. 3. The people resident in cities area has pratice of health development by exercise person were 43.5% and value of rate for male has exercise practice is 52.5%, was significantly higher than female has by age group 10 years old and age group 50 years old is 52.6% and 47.3% was comparative higher rate also age group 30 is 35.1% of low factor was indicated. Although evaluated an economic situation rate was higher level get more taken the practice of health develop exercise(higher level 60.0% and low level is 32.9%). Although by higher level of educated were more taken pratice of their proper physical exercise(college graduated rate ; 52.2% of most higher and high school graduted ; 39.7% and then middle school graduated is 19.1%) unmarried taken exercise rate ; 48.4% is significantly higher than married person rate ; 40.8%. Although objective of native area of exercise rate of Urban area cities ; 52.5% are significantly higher farming and fishing native person rate ; 40.4% shown is most low.

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Cross-cultural Observation of Street Fashion of 2006 F/W in London/paris, New York, and Seoul (2006 F/W 런던/파리, 뉴욕, 서울 크로스 컬쳐럴 스트릿 패션 고찰)

  • Kim, Chil-Soon;Cassill, Nancy
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.12
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    • pp.1939-1949
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    • 2008
  • The purpose of this study was to identify differences or similarities across the ensembles of 2006 F/W fashion trends in the big fashion centers such as Paris, London, New York, and Seoul, by street fashion research. The study focuses on understanding of localized fashion trend in the marketplace. We used photograph observation and analyzed data by SPSS program. We found there is a significant difference in winter outfits at these different global fashion mega cities. Most Korean women were wearing light colored outer jackets and blue jeans were dominant style for pants. The majority of Paris/London, New York and Seoul people on the street were wearing wool/wool like coat. Padded coats were worn more by New Yorkers than by people in Seoul. For the bottom, there is a similarity between Paris/London, and New York City, in that skinny pants were popular. Koreans were wearing skinny pants mostly, but the percentage of mini skirts/shorts was also higher than any other cities. We found that the cross-cultural fashion mega trend is similar in clusters, but there is a slight difference of trend in clothing color, style and design details, and accessories by localized fashion cities. Not only direct observation but also identification of cultural characteristics and consumer behavior through the years will bring much more contributions to apparel industries.

A Study on Characteristic of each Cities·Counties Regions by Trade Causes of Apartment Sales - Focused on the Resale of Apartment Unit - (아파트 거래원인별 시·군 지역간 특성에 관한 연구 - 분양권 전매를 중심으로 -)

  • Kim, Sun-Woong;Kang, Hyeun-Ju;Suh, Jeong-Yeal
    • Journal of Cadastre & Land InformatiX
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    • v.46 no.2
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    • pp.283-296
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    • 2016
  • This paper aims to analyze characteristic by the cities focused on the ratio of new apartment resale that is one of the apartment unit sale market, which has been increased recently. To do so, this study examined characteristics of population, housing, residential, and economical with 162 cities and counties and performed multiple regression analysis with dependent variable, ratio of new apartment resale. As a result. the factors affecting the ratio of new apartment resale are 7variables, regional apartment rate, population increasing rate, a mount of sell in lots, housing rent price (Jeonse price) rate compared to average apartment sale price, single-person households increasing rate, apartment subscription rate and number of buyers in the area. Thus, this study showed that the factors affecting characteristic by the regions are ordered characteristics of residential, population and rate of sale and dealing. Based on this result, this study will be basic data for policy of government and development of apartment sales system and for end user to activate resale in apartment sales market.

Prediction of present and future distribution of the Schlegel's Japanese gecko (Gekko japonicus) using MaxEnt modeling

  • Kim, Dae-In;Park, Il-Kook;Bae, So-Yeon;Fong, Jonathan J.;Zhang, Yong-Pu;Li, Shu-Ran;Ota, Hidetoshi;Kim, Jong-Sun;Park, Daesik
    • Journal of Ecology and Environment
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    • v.44 no.1
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    • pp.33-40
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    • 2020
  • Background: Understanding the geographical distribution of a species is a key component of studying its ecology, evolution, and conservation. Although Schlegel's Japanese gecko (Gekko japonicus) is widely distributed in Northeast Asia, its distribution has not been studied in detail. We predicted the present and future distribution of G. japonicus across China, Japan, and Korea based on 19 climatic and 5 environmental variables using the maximum entropy (MaxEnt) species distribution model. Results: Present time major suitable habitats for G. japonicus, having greater than 0.55 probability of presence (threshold based on the average predicted probability of the presence records), are located at coastal and inland cities of China; western, southern, and northern coasts of Kyushu and Honshu in Japan; and southern coastal cities of Korea. Japan contained 69.3% of the suitable habitats, followed by China (27.1%) and Korea (4.2%). Temperature seasonality (66.5% of permutation importance) was the most important predictor of the distribution. Future distributions according to two climate change scenarios predicted that by 2070, and overall suitable habitats would decrease compared to the present habitats by 18.4% (scenario RCP 4.5) and 10.4% (scenario RCP 8.5). In contrast to these overall trends, range expansions are expected in inland areas of China and southern parts of Korea. Conclusions: Suitable habitats predicted for G. japonicus are currently located in coastal cities of Japan, China, and Korea, as well as in isolated patches of inland China. Due to climate change, suitable habitats are expected to shrink along coastlines, particularly at the coastal-edge of climate change zones. Overall, our results provide essential distribution range information for future ecological studies of G. japonicus across its distribution range.

A Study on the Image of the Private Hospital Buildings in Small and Medium-Sized Cities (중소도시 개인병원 건축물의 이미지에 관한 연구)

  • Lee, Woong-Gu
    • Journal of the Korean Institute of Rural Architecture
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    • v.14 no.4
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    • pp.107-116
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    • 2012
  • This study aims to investigate what degree do the hospital buildings carry out their role in regional scenery. To carry out this study the existing theoretical and field survey was conducted to the 44 private hospitals in small and medium-sized cities - Jeonju city, Kunsan city and Iksan city in Jeonlabukdo district. The contents of the survey are the general aspect of the polled, the image of the buildings, that of medical treatment parts, the relations to the regional scenery. And they are questionnaire surveyed to the 44 private hospital buildings. In questionnaire survey, the 35 professional architects who major architecture and related design and 118 citizens who doesn't major architecture are participated. The results of this study are as follows: 1. Those surveyed who answered those private hospital buildings which have their functional images are barely 20%. Some of 27% answered they have images of the commercial building. Especially in professional architects, 5% of them answered thet have their hospital images. It showed that they don't have their identity in the architectural expression in the processof architectural design. 2. The architectural facade elements that express their images in surveyed buildings are answered that architectural building form is 62%, architectural color is 27% and architectural material is 10% in turn. And the architectural elements that express their images in surveyed buildings are answered that building wall is 56%, architectural decoration is 32%. In this article, the reason why the ratio of the architectural decoration is high is that they don' have their identity in building itself. And they expressed their identity by their decoration, sign system not their buildings. 3. As the preference level for their images, some of the 49% of the total surveyed answered common. The general surveyed answered a little preference. But the architect professional group answered preference is 14%, not preference is 29%. The reason of this article is that the general surveyed are familiar with their buildings. So the questionnaire of the harmony with the surrounding scenery, 25% of the general surveyed answered that they are in harmony with surrounding but 22% of them answered that they are not in them. But In professional group, they answered 6% oh them are positive 37% of them are negative. This results suggests that the identity of the private hospital buildings are established in the process of archiectural design.