• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.8
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• pp.423-432
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• 2016

Due to the increase in the number of transfer lines and ground level connections with mixed-use high-rise buildings, the Seoul Metro suffers from loaded signage fatigue because of the presence of too many signs. The purpose of this research is to propose ways of improving the wayfinding on the Seoul subway station by examining the signage and (applying the) universal design (UD) concept. A review of the literature explored five universal design components, viz. the accessibility, safety, equitability, perception, and aesthetics. The field investigation found that the ceiling and wall type and general information boards were high on the information hierarchy. The survey respondents merely perceived universal design concept, however, most needed principle. The IPA found that the signs should be appropriately laid out, spaced and located from the perspective of accessibility, and their unity and harmony were other aspects that could be improved while general information boards should include important landmarks outside. In conclusion, this study suggests that the universal design signage concept should be applied to every station and that specific stations should have a duly sign system.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1994.04b
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• pp.449-453
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• 1994

공작기계의 가공정밀도는 공구와 공작물간의 상대변위 크기로서 평가되는데, 이 상대변위는 가공중에 발생 하는 절삭력이 공구-척-주축-기계구조물-안내면-가공테이블-공작물로 이어지는 하중전달 폐곡선을 흐르면서 경로상의 정적, 동적 취약부의 주된 영향을 받아 생기거나 각 요소부품의 변형이 누적되어 생겨난다. 본 연구에서는 주축의 취약부를 규명하기 위하여 정적으로는 정적 처짐곡선을 이용하고, 동적으로는 진동모우드의 굽힘곡선을 이용하여 주축선단의 처짐에 가장 영향을 많이주는 부위를 파악하였다. 취약부의 개선방법으로는 주축지름을 변화시켜 주축선단 근처에서 굽힘이 집중되지 않도록 유도하였다. 그리고 구조개선의 효과를 확인 하기 위해서 기존 주축시스템과 개선 주축시스템의 정적, 동적 특성변화를 비교하였다.

• KOREAN POULTRY JOURNAL
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• v.43 no.8
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• pp.134-138
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• 2011

국내 축산업의 기술 발전과 설비 현대화 유도 및 국내외 축산기자재, 사료, 동물약품 비교 전시를 통해 상호 기술 및 정보교환을 통한 우리나라 축산 발전에 기여하고자 오는 9월 21일~24일 동안 대구에서 2011 한국국제축산박람회가 개최된다. 이에 앞서 2011 한국국제축산박람회 추진위원회는 지난 13일 서울 강남구 소재 SETEC에서 참가 경영체 사전설명회를 통해 이번 박람회 추진상황을 비롯한 부스 규모 및 부스 배치, 부스 설치 및 전시 준비 안내에 대한 설명이 있었다. 이에 따라 본고를 통해 간략한 내용을 소개하고자 한다.

• Proceedings of the CALSEC Conference
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• 2001.08a
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• pp.457-465
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• 2001

■ 필요성 1. 교통 혼잡으로 인한 물류비 상승으로 국가 경쟁력 약화 2. 기존 최단경로 알고리즘(Dijkstra, Floyd-Warshall 등)의 한계 3. 대규모 네트워크(NP-hard문제)→정보 사용자가 제시하는 시간 내에 정보를 제공 필요 4. 교통 제약(회전금지, U턴, U턴 금지, P-턴) → 실제 교통 상황과 순환 노드 고려가 필요 ■목적 1. 교통제약을 포함한 대규모 교통네트워크에서 실시간 교통정보를 바탕으로 제한된 시간 내에 차별화 된 다수 최적경로 산출 함 2. 유전자알고리즘(GA)을 적용한 동적경로안내시스템 개발(중략)

• 한국항공운항학회:학술대회논문집
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• 2015.11a
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• pp.186-190
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• 2015

국내에서 개발중인 항공기 지상이동유도 및 통제시스템(A-SMGCS)의 핵심 기능인 경로, 감시, 안내, 통제기능 중 통제기능은 충돌상황을 예측하고 관제사에게 이를 알려주어 충돌상황을 해결하는 매우 중요한 핵심기능이다. 본 연구에서는 A-SMGCS 충돌기능에 대해 소개하고 해외 검증사례를 분석하여 현재 개발중인 시스템에 적용할 수 있는 검증방안에 대하여 연구하였다. 항공기의 안전한 지상이동을 위하여 본 연구에서는 통제기능의 실제 운용시험평가를 하는 방안에 대하여 연구하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.442-444
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• 2011

본 논문에서는 접사에서의 주요 객체 검출과 검출된 주요객체의 가장 최적화된 구도를 사용자에게 안내하는 방법을 제안한다. 대부분의 접사는 주요객체에 초점을 맞추고 배경이 되는 영역은 아웃 포커싱 기법을 사용하여 촬영한다는 점에서 착안하여 주요 객체를 검출하고 검출된 주요객체와 사진 구도의 3등분할점과 구도점의 상관관계에 대하여 계산하여 최적의 구도라고 판단되는 화면으로 사용자를 유도한다. 제안하는 방법으로의 실험했을 때 좋은 결과를 얻는 것을 확인할 수 있었다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.11 no.5
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• pp.46-55
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• 2012

This study proposes an estimate method of willingness to pay(WTP) for real-time route guidance systems using contingent valuation method(CVM) under double bounded dichotomous choice question(DBDCQ) and analysis for impact factors of WTP estimation. This study assumed that provided real-time traffic information service is optimal route concepts dealing with traffic conditions on origin-destination. Analysis targets were classified into two groups as short distance path and middle distance path for estimating WTP for realtime route guidance system in a year using the survival analysis method and the regression model with personal information, actual condition and satisfaction of information usage and users' awareness and usage of facilities. As a result, mean WTP of realtime route guidance system is 4,034won/year in short distance path, and 4,884won/year in middle distance path. Therefore real-time route guidance system for longer distance path is recognized as more valuable than shorter distance path. Moreover, the necessity of information was required on a higher income group and higher WTP was estimated on owners of vehicle group and lower awareness of a route group.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.32 no.5D
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• pp.437-444
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• 2012

This study intended to improve traffic safety in work zones using fluorescent orange color traffic signs. For this end, the current problems of existing traffic signs and facilities in work zones were analyzed and some good examples of foreign countries were compared. More specifically, in order to identify current problems, the basic shape and color of traffic signs in use were examined through literature review, surveys and field studies. It was found that the fluorescent color worked more effectively than other colors in terms of visibility and conspicuity in work zone sign system. For evaluation, both Conspicuity surveys and in-door simulator experiments were conducted to effectively assess the merits and demerits of different types of traffic signs for work zones. The results of evaluations showed that black lettering on a fluorescent orange background outperformed more than 70% in terms of visibility and ability to call drivers' attention compared with those from black/red lettering on yellow/white backgrounds currently used at work zones on expressways and national highways. In addition, simulated driving experiment disclosed that drivers recognized the fluorescent orange background sign 15m ahead compared with the yellow background sign and 25m ahead compared with the white background sign, respectively. As for the diamond-shaped "Under Construction" sign, drivers recognized fluorescent orange background 11m ahead compared with the yellow background sign and 19m ahead compared with the white background sign, respectively.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.4
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• pp.569-574
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• 2018

This paper proposes and implements a LoRa-based emergency exit guide system which can direct the optimal refuge path accounting for the real state of the fires. Each 4-way emergency exit guide sign presents a right direction through one of four LED signs toward the possible exit dynamically calculated by the shortest path algorithm. We constructed a simulation environment with 8 spots of the emergency exit guide signs and 2 exits, which can simulate variant cases of fire accidents, and showed that the proposed algorithm can presents the right guidance for each emergency exit guide sign. We also evaluated the performances of LoRa-based wireless communications using a self developed communication module in the various indoor and outdoor environments. The proposed system can be applied to small and medium sized buildings as well as larger ones in terms of cost efficiency, in which there's no needs to invest for the complex equipments except only sensors and emergency exit guide signs.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.41 no.5
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• pp.81-90
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• 2004

This paper presents new testability measure based on learning, which can be useful in the deterministic process of test pattern generation algorithms. This testability measure uses the structural information that are obtained by teaming. The proposed testability measure searches for test pattern that can early detect the conflict in case of the hardest decision problems. On the other hand in case of the easiest decision problem, it searches for test pattern that likely results in the least conflict. The proposed testability measure reduces CPU time to generate test pattern that accomplishes the same fault coverage as that of the distance-based measure.