• Journal of the Korean Association of Geographic Information Studies
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• v.13 no.1
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• pp.16-27
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• 2010

A street, as a linear factor constituting the city, is an axis of urban development. The substantial function of the street is the traffic space for the passage but now it plays the important role of the place of community where contains various activities such as meeting between people and people, rest, entertainment etc. A street is basically the 3 dimensional space consisted of the sidewalk, roadway and the roadside structures surrounding the street. In this case, the roadside structures are the physical composition factors for the street space and the facade of the roadside structures acts as important variables to form the image of street space. Thus, this study is to provide the basic data to be applied in the future urban street landscape plan by extracting the superior factors in visual and perceptional aspects which affect the image of street view from the shape composition factors which constitute the facade of the roadside structures, and by searching and analyzing the satisfaction degree and preference of each factors.

• Journal of Korean Society of Transportation
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• v.34 no.6
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• pp.489-498
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• 2016

The objective of this study is to develop road traffic accident model involving child pedestrian especially at school zones and its surrounding area. The analysis is based upon traffic accident data collected near sixty elementary schools in City of Cheongju during 2012 and 2014. This study results in two statistical models ; one is to predict the number of road traffic accidents involving children, and the other is to predict EPDO(Equivalent Prperty Damage Only). These models are represented as Poisson models. which are statistically significant with the likelihood ratios of 0.533 and 0.273. The common explanatory variables of these models are the ratio of road section with more than 4 lanes, the number of entrance and exit, the number of signalized crosswalk in school zone, the number of school zone signage including road surface marking, and the number of speed limit signs. The specific variables are the length of road stretch in school zone, the number of reflector mirrors, and the number of signalized crosswalk outside school zone. It is concluded that these types of road safety facilities can reduce the number of traffic accidents involving children at school zones and its surrounding area.

• Journal of Korean Association for Spatial Structures
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• v.5 no.3 s.17
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• pp.109-115
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• 2005

The experimental work was performed to investigate the effect influenced to the hystresis and the flexural strength improvement of RC beam using carbon fiber plates. Major parameters of this experimental program were the section size of carbon fiber plates and the damage level of RC beam before reinforcement. Particularly, the damage level of beam is for the cases damaged by overloads. The damage level is for 30%, 60%, and 100% of flexural strength, and no damaged beams were also tested for comparison with the damaged one. from the test results, it showed that the beams reinforced by carbon fiber plates had the higher strength and lower deformation capacity than the general beams and that it had the same ductility ratio of the general beams.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.2
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• pp.1507-1515
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• 2015

The aim of this study was to suggest an enhancement of pedestrian safety through a service design process regarding urban design in new-town area. For this study, the concept, process and touchpoint, and survey design area, of the service design are reviewed as a theoretical study. According to this study, traffic signals, pedestrian environment, pedestrian overpass, and access traffic road were surveyed as touchpoints and a problem search, concept design, design building, institutional implement were analyzed as a service design process. As a result of these studies, the planning method for pedestrian safety based on service design process in terms of the external space design in a new-town area are suggested.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.1
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• pp.23-28
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• 2023

This study aims to examine the characteristics of YouTube space, focusing on YouTube contents related to conflict. From 2012 to 2022, conflict-related contents posted on YouTube was collected and the major topics and characteristics were identified through topic modeling analysis. The results reveal that YouTube contents related to conflict consisted mainly of news reports on social structural conflicts and broadcast programs dealing with family conflicts. These results make us worry that YouTube space will function as a means of generating profits for existing broadcasting contents rather than expecting that it can be used as the public sphere for conflict-related issues. It is time for in-depth discussions on how our society will use YouTube in the future.

• Korean Journal of Remote Sensing
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• v.37 no.5_1
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• pp.1163-1175
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• 2021

In autonomous driving, road markings are an essential element for object tracking, path planning and they are able to provide important information for localization. This paper presents an approach to update and measure road surface markers with HD maps as well as matching using inverse perspective mapping. The IPM removes perspective effects from the vehicle's front camera image and remaps them to the 2D domain to create a bird-view region to fit with HD map regions. In addition, letters and arrows such as stop lines, crosswalks, dotted lines, and straight lines are recognized and compared to objects on the HD map to determine whether they are updated. The localization of a newly installed object can be obtained by referring to the measurement value of the surrounding object on the HD map. Therefore, we are able to obtain high accuracy update results with very low computational costs and low-cost cameras and GNSS/INS sensors alone.

• Journal of Korean Society of Transportation
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• v.24 no.6 s.92
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• pp.55-64
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• 2006

Pedestrians and vehicle users ate competing for limited space in urban streets. Therefore, strategical planning and design should be considered to balance the needs placed on urban streets. The study suggested a way to put this concept in to practice by comparing level of service(LOS) of pedestrians and vehicles in the planning and design stage. Also. the study considered the priority among two users basing on the land use characteristics and the functional hierarchy of the streets. In order to overcome the lack or prediction or survey of pedestrian demands in design process, new pedestrian LOS applicable to sidewalk design was suggested based on the comfort linked with the physical limitation. The comparison of the suggested way and the existing way provided at the end of the paper.

• The Bulletin of The Korean Astronomical Society
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• v.35 no.1
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• pp.84.1-84.1
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• 2010

2009 세계 천문의 해(International Year of Astronomy 2009, IYA2009) 한국조직위원회는 지난 1년간 148개 참가국의 일원으로 다양한 활동을 펼쳤다. IYA2009 활동은 강연, 별 축제와 같은 고전적인 이벤트로부터 시, 수필, 에세이, 음악, 미술, 만화, 영화, 대회, 인터넷 생중계, 플래시 동영상과 같이 새롭게 시도된 프로그램에 이르기까지 다양하게 기획, 운영되었다. 또한 우리는 시민천문대와 과학관, 미술관은 물론, 지하철, 기차역, 시청, 놀이공원, 쇼핑몰, 백화점, 병원, 그리고 경찰서에 이르기까지, 기존의 전통적인 전시공간을 벗어나 다양한 장소에서 전시회와 동영상 상영을 시도했다. 우리는 지난 1년간 90여 종의 행사를 410여 회에 걸쳐 진행했으며, 총 11,700,000여 명의 일반 시민과 학생들이 2009 세계 천문의 해에 참여한 것으로 추산하고 있다. IYA2009는 강연 200여 회, 전시 80여 회, 공연 15회, 학회 7회 등으로 요약할 수 있으며, 공식책자 4종, 도록 3종이 발간되었다. 관련 보도자료는 40 차례 배포했으며, 그 결과 2,500여 건이 언론을 통해 보도되었고, 총 248편의 연재기사가 실렸다. 2009 세계 천문의 해 한국조직위원회 공식 웹진 '이야진' 접속자는 999,890명, 총 페이지 뷰 건수는 131,963,473을 기록했다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.39 no.6
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• pp.599-607
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• 2021

Street-view images, which are omnidirectional scenes centered on a specific location on the road, can provide various obstacle information for the pedestrians. Pedestrian network data for the navigation services should reflect the up-to-date obstacle information to ensure the mobility of pedestrians, including people with disabilities. In this study, the object detection model was trained for the bollard as a major obstacle in Seoul using street-view images and a deep learning algorithm. Also, a process for updating information about the presence and number of bollards as obstacle properties for the crosswalk node through spatial matching between the detected bollards and the pedestrian nodes was proposed. The missing crosswalk information can also be updated concurrently by the proposed process. The proposed approach is appropriate for crowdsourcing data as the model trained using the street-view images can be applied to photos taken with a smartphone while walking. Through additional training with various obstacles captured in the street-view images, it is expected to enable efficient information update about obstacles on the road.

• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.579-585
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• 2023

The purpose of this study is to explore keywords within stalking-related news articles according to political orientation through the text network analysis, and then to examine the implicit intentions. Selecting total 1,607 articles including 824 articles of the conservative press(The Chosun Ilbo, The Joongang Ilbo) and 783 articles of the progressive press(The Hankyoreh, The Kyunghyang Shinmun) reported from January 1, 2018 to December 31, 2022, this study explored the aspect of topic category drawn through the topic modeling technique based on LDA(Latent Dirichlet Allocation). In the results of this study, the common topics of the conservative and progressive press were improvement of the perception of gender-based violence, personal protection & intensity of punishment, and disclosure of stalkers' personal information. Regarding the topics differently shown in those two press, the conservative press showed stalkers' harmful act, and outline of 'murder case at Sindang Station' while the progressive press showed request for aggravated punishment on the 'murder case at Sindang Station', and eradication of sexual exploitation crime (in cyber space). The results of this study imply that there are changes in the type of reporting according to ideological opinions about stalking in news articles.