PURPOSES : The purpose of this study is to derive specific road design elements for safe urban underground and to adopt measures for minimizing traffic delays and to maintain efficient operation. METHODS : In this study, a qualitative study was conducted using Focus Group Interview (FGI) method to identify significant connection characteristics and develop connections to urban underground roads. Finally, this study analyzes design elements necessary for traffic safety and efficient traffic operation. In addition, relevant case studies were performed with keywords from the FGI method results. Therefore, major design elements were analyzed for urban underground road connection and connection analysis for traffic simulation-based verification. RESULTS : The main characteristics of the connection between the underground roads of the downtown area were divided into three types: traffic flow characteristics, geometric characteristics, and driver behavioral characteristics. From the review of 16 leading studies (10 domestic papers and 6 international papers) according to the characteristics, the main design factors for “traffic flow characteristics” include the traffic volume, design speed, heavy vehicle ratio, and lane change. The important design elements for “geometric characteristics” include the separation distance, number of lanes, slope, lane and shoulder width and the design factors for “driver behavioral characteristics” showed reaction time, driver vision, and driving speed. CONCLUSIONS : The FGI method identified the main characteristics of connections to the underground roads. In addition, the relevant empirical and theoretical research data were considered in case studies, and the design elements were derived and separated spatially based on the features of each design element, establishing a point-specific design element guideline.

PURPOSES : The purpose of this study is to establish design criteria for right-turning lanes by analyzing the relationship between the speed and geometry of right-turning lanes in urban areas. METHODS : A right-turn vehicle with a traffic island was surveyed for 32 geometries and 4,012 vehicles. Using multiple regression, we developed a running speed prediction model based on the running speed characteristics and geometry scale. RESULTS : According to the analysis of the running speed of the right-turning channel, the 85th speed was 34.5-38.3 km/h, depending on the right-turning lane radius, and 32.4-39.0 km/h, depending on the channel width group. Based on the multi-regression, the right-turning radius and the channel width variables were statistically significant because of the influencing factors of the road speed. Two independent variables were positive (+) coefficients. CONCLUSIONS : In this study, we investigated the running speed state on the right-turning channel and the factors that influenced the running speed. In addition, the relationship between the running speed and other factors was modeled through statistical analysis, and a running speed prediction model was established. It was observed that the driving speed increased as the geometry scale increased. Based on the derived running speed model, the maximum design criteria for limiting the speed of the conductive channelized right-turning lane in urban areas were established.

Electronic document communication based on a digital channel is becoming increasingly important with the advent of the paperless age. The electronic document based on PDF format does not provide a powerful customer experience for a mobile device user despite replacing a paper document by providing the content integrity and the independence of various devices and software. On the other hand, the electronic document based on HTML5 format has weakness in the content integrity as there is no HTML5 specification for the content integrity despite its enhanced customer experience such as a responsive web technology for a mobile device user. In this paper, we design the Document-HTML, which provides the content integrity and the powerful customer experience by declaring the HTML5 constraint rules and the extended tags to contain the digital signature based on PKI. We analyze the existing electronic document that has been used in the major financial enterprise to develop a sample. We also verify the Document-HTML by experimenting with the sample of HTML electronic communication documents and analyze the PKI equation. The Document-HTML document can be used as an authorized electronic document communication and provide a powerful customer experience in the mobile environment between an enterprise and a user in the future.

목적 : 낮은 가입도의 근시성 노안을 대상으로 중심-근용 및 중심-원용 동시보기 멀티포컬 콘택트렌즈 착용 후 시기능을 비교하고자 하였다. 방법 : 13명(46.92±5.91세)의 대상자들을 중심-근용 및 중심-원용 동시보기 멀티포컬 콘택트렌즈를 각각 착용 후 조절래그, 스트레이라이트, 입체시력, 수평사위, 근거리 버전스, 자각적 시력 만족도를 평가하였다. 결과 : 낮은 가입도의 근시성 노안을 대상으로 중심-원용 및 중심-근용 동시보기 멀티포컬 콘택트렌즈 사이에서 조절래그, 스트레이라이트, 입체시력, 수평사위, 근거리 버전스, 자각적 시력 만족도는 유의한 차이가 없었다. 결론 : 낮은 가입도의 근시성 노안에서 중심-근용 및 중심-원용 동시보기 멀티포컬 콘택트렌즈 착용 후 시력의 질 그리고 조절 및 버전스 반응과 관련된 시기능에서 유의한 차이가 없었다. 따라서 멀티포컬 콘택트렌즈 선택 시 참고자료로 활용할 수 있으리라 생각된다.

목적 : 본 연구의 목적은 감각통합치료가 아동의 섭식 및 구강기능에 미치는 효과에 대한 단일대상연구 설 계 연구의 특성을 확인하고 질적 수준을 알아보는 것이다. 연구방법 : 한국연구정보서비스(Research Information Sharing Service; RISS), 한국학술정보(Koreanstudies Information Service System; KISS)의 원문제공 서비스를 활용하여 2011년에서 2020년에 발간된 논문 중 감각통합, 감각통합치료, 감각자극, 구강방어를 주요 검색용어로 검색하였다. 총 7편의 단일대상연구 설계 논문을 대상으로 연구 특성 및 내용, 질적 수준을 확인하였다. 결과 : 연구 설계는 모두 반전설계였다. 독립변수는 감각통합, 구강 관련 중재를 동시에 적용하였고 종속변 수는 식사, 호흡, 자세, 침흘림, 양치질 등 다양하였으며 중재 후 모든 종속변수가 향상되었다. 치료 회기, 시간, 기간은 다양하였다. 연구의 질적 수준은 대부분 중간 이상이었으며, 변수와 대상에 대한 정의, 시각적 자료 사용 등 기준에 맞는 연구를 수행하고 있었다. 결론 : 감각통합치료는 섭식 및 구강기능에 효과적인 중재법으로 확인되었다. 단일대상연구 설계의 질적 수준은 적절하였으며 추후 연구 결과의 타당성을 높일 수 있는 방법을 적용하여 높은 수준의 연구를 진행해야 할 것이다.

최근 고층건물 설계 시 내진설계와 내풍설계의 부조화 문제를 해결하기 위해 성능기반 내풍설계에 대한 연구가 활발히 진행되고 있다. 이 연구에서는 개정 예정인 국내 설계기준(KDS 41)을 기반으로 성능기반 내풍설계를 위한 풍하중 재해도와 비탄성 거동을 허용하는 성능목표를 제시하였다. 비탄성 내풍설계를 위한 반응수정계수 R WR 산정 시 여러 제한 사항들을 고려하여 그 범위를 제안하였으며, 비선형 풍하중 시간이력해석 시 고려해야 할 사항들을 고찰하였다.

본 연구는 VR을 활용한 중국문화수업을 국내 중국어 혹은 중국문화교육에서 학습 자에게 IT 기술을 활용한 새로운 학습방법을 제시하고 학습효과를 높이는 것에 그 목적이 있다. 본 연구에서는 중국문화수업의 설계 방법을 도출하고 몰입 방법에 따라 ‘완전몰입형’, ‘부분몰입형’, ‘비몰입형’의 세 가지 방법으로 VR 중국문화수업 설계 방안을 제안하였으며 각 방식에 따라 장·단점과 학습효과 등을 분석하였다. 또한 설계방안을 바탕으로 실제 수업 사례를 들어 살펴보았다. 끝으로 VR을 활용한 중국문 화수업 설계를 위한 VR 콘텐츠 사용 빈도와 비중 조절, 적절한 환경구축을 위한 지원과 기술적인 지원을 제안하였다.

본 연구는 대전 스카이로드 미디어 파사드의 공공 디자인 평가와 감성 평가의 특성을 살펴보고자 하였다. 이를 위해, 대전 스카이로드 미디어 파사드 영상물을 시청하여 대상자들이 미디어 파사드의 공공 디자인 평가 항목과 감성 어휘로 구성된 감성 평가 항목에 응답하도록 하였다. 그리고 인구통계학적 변인에 따른 대전 스카이로드 미디어 파사드의 공공 디자인 평가 결과의 평균 비교를 진행하고, 감성 어휘의 요인 구조를 도출하여 각 요인에 포함되는 감성 어휘를 바탕으로 공공 디자인 평가 요인과의 상관분석을 진행하였다. 그 결과, 대상자들의 성별, 미디어 파사드 경험 여부, 연령에 따라 일부 차이 및 경향성을 보이는 공공 디자인 평가 항목이 존재하는 것으로 나타났다. 한편, 감성 어휘의 요인 구조로는 총 14개의 어휘가 4개의 요인 구조로 구성되었으며, 모든 공공 디자인 평가 요인에 걸쳐 공통으로 관련성이 높은 감성 어휘로는 “쾌적한-불쾌한”이 존재하는 것으로 나타났다. 이는 주관적으로 쾌적하다고 인식되는 감성이 공공 디자인으로서 대전 스카이로드 미디어 파사드의 주된 가치로 평가될 수 있음을 시사한다. 다만, 성별과 연령을 고려한 정책이 반영되어 대전 스카이로드가 운영된다면 공공 디자인으로서의 가치가 더 향상될 수 있을 것으로 기대된다.

Seismic designs for Korean nuclear power plants (NPPs) under earthquakes’ design basis are noticed due to the recent earthquake events in Korea and Japan. Japan has developed the technologies and experiences of the NPPs through theoretical research and experimental verification with extensively accumulated measurement data. This paper describes the main features of the design-time history complying with the Japanese seismic design standard. Proper seed motions in the earthquake catalog are used to generate one set of design time histories. A magnitude and epicentral distance specify the amplitude envelope function configuring the shape of the earthquake. Cumulative velocity response spectral values of the design time histories are compared and checked to the target response spectra. Spectral accelerations of the time histories and the multiple-damping target response spectra are also checked to exceed. The generated design time histories are input to the reactor building seismic analyses with fixed-base boundary conditions to calculate the seismic responses. Another set of design time histories is generated to comply with Korean seismic design procedures for NPPs and used for seismic input motions to the same reactor containment building seismic analyses. The responses at the dome apex of the building are compared and analyzed. The generated design time histories will be also applied to subsequent seismic analyses of other Korean standard NPP structures.

PURPOSES : The purpose of this study is to contribute to the utilization of standards while considering the possible upgrade of a local system as a subject of the application. Therefore, this study aims to explore the possible application of LandInfra for a local road management (maintenance) system in the context of enabling the basis of 3D geospatial road information management in Korea. METHODS : Based on a review of related literature and international standards, an analysis of the current system is performed. After reviewing the LandInfra standard, an examination of corresponding classes between each data model (HMS and LandInfra) is performed for the mapping process. After the mapping process, a data model of the LandInfra-based HMS pavement data model is proposed. RESULTS : To apply the LandInfa to the HMS pavement part, an examination of each data model is performed. After this procedure, a LandInfra-based HMS pavement database schema is proposed in the context of enabling 3D geospatial road information management and maintenance, particularly for pavement management information. CONCLUSIONS : This paper presents how the LandInfra international open geospatial standard can be applied to the local road management system (HMS pavement part). As a result of this study, the LandInfra standard could be applied to the HMS; however, an encoding of the standard is required for conformance. Thus, further studies would be the encoding of the proposed data model for conformance with InfaGML encoding standards. In addition, a system prototype may be needed for complete application.

This study aims to develop a hanbok design method in response to recent changes in consumption trends that emphasize new aesthetic and cultural values, which contrast with the existing cultural order and repetitive normative styles in fashion designing. With this in mind, our study explores the main features of deconstruction fashion design as a theoretical guide for developing a methodology for deconstruction hanbok design, on the basis of which new, experimental and creative hanbok design works can be produced. To do this, we first investigate current trends in hanbok design and changing concepts of Korean fashion design through literature review of previous studies. Secondly, we explore deconstructionism and analyze its features to lay down the foundation for a post-modern approach in hanbok design. As the result of analysis, the main features of deconstruction fashion design are summarized as the following: 1) non-finishing, 2) decomposing and recomposing, 3) recycling, 4) transparent, 5) grunge, 6) flattening, and 7) exaggeration. Based on the identified core features of deconstruction fashion design, we develop a creative method of hanbok design in the context of modern Korean fashion design. Finally, we show five design outputs via a 3D digital fashion design process using the CLO3D software program.

The purpose of this study is to provide basic data to assist students and industrial designers in fashion by examining the trend of designing women’s wear with the SCAMPER method. In the research, the seven types of SCAMPER methods for fashion design were classified based on the previous studies. From 2010 S/S to 2020 S/S, data from 5,149 photographs were collected through overlapping checks and classified by SCAMPER method type. Data analysis was performed using SPSS 25.0 for frequency analysis. As a result, in the SCAMPER “combine” method, more than two items were combined, or structural details were combined with items. In the most applied “adapt” method was involved imitating similar images, or natural forms, or other objects. The “modify” method was applied by changing the shape of some details in basic fashion items. The “magnify” method was applied by enlarging, elongating, or elevating some details of fashion items. The “minify” method was applied by minimizing, shortening, or lowering some details of basic fashion. The method of “put to other use” was expressed throughout the clothing by using non-fabric or trimmings such as metal, beads, and strings. The “rearrange” method was applied by repositioning the top and bottom, front and back, or outside and inside in fashion items and in details. The “reverse” method was applied by reversing the style of fashion, mix-and-match fabric, or switching the gender of the fashion items.

The Ozone Dynamics Investigation Nano-Satellite (ODIN) is a CubeSat design proposed by Chungnam National University as contribution to the CubeSat Competition 2019 sponsored by the Korean Aerospace Research Institute (KARI). The main objectives of ODIN are (1) to observe the polar ozone column density (latitude range of 60 to 80 in both hemispheres) and (2) to investigate the chemical dynamics between stratospheric ozone and ozone depleting substances (ODSs) through spectroscopy of the terrestrial atmosphere. For the operation of ODIN, a highly ecient power system designed for the specic orbit is required. We present the conceptual structural design of ODIN and an analysis of power generation in a sun synchronous orbit (SSO) using two dierent congurations of 3U solar panels (a deployed model and a non-deployed model). The deployed solar panel model generates 189.7 W through one day which consists of 14 orbit cycles, while the non-deployed solar panel model generates 152.6 W. Both models generate enough power for ODIN and the calculation suggests that the deployed solar panel model can generate slightly more power than the non-deployed solar panel model in a single orbit cycle. We eventually selected the non-deployed solar panel model for our design because of its robustness against vibration during the launch sequence and the capability of stable power generation through a whole day cycle.

본 연구에서는 20,000 톤급 해양플랜트 상부구조물(Topside)의 플로트오버 설치작업을 위해 개발된 수동형 갑판 지지 프레임 (Deck support frame)의 구조설계에 대해 다양한 실험계획법을 이용한 최소중량설계와 민감도 평가의 비교연구를 수행하였다. 수동형 갑판 지지 프레임의 주요 구조부재의 두께 치수 변수는 설계인자로 고려하였고, 응답치는 중량과 강도성능으로 선정하였다. 최소중량설계와 민감도 평가의 비교연구에 사용한 실험계획법은 직교배열설계법, Box-Behnken 설계법, 그리고 Latin hypercube 설계법이다. 실험계획법의 설계공간 탐색의 근사화 성능을 평가하기 위해 반응표면법을 각 실험계획법 별로 생성하여 근사화 정확도 특성을 검토하였다. 또한 최소 중량설계를 위해 최상 설계안의 결과로 부터 실험계획법의 특성에 따른 수치계산 비용, 중량감소 효과 등을 평가하였다. 수동형 갑판 지지 프레임의 구조설계에 대해 Box-Behnken 설계법이 가장 적합한 설계 결과를 나타내었다.