• 한국실내디자인학회논문집
• /
• 제38호
• /
• pp.192-200
• /
• 2003

Interactions with the environment do to firm, deny, or challenge the existing knowledge. People who suffer from the loss of the sight have difficulty conceiving the space and the direction as well as walking. In the study, it wanted to reveal that the border that Is provided as a transfer clue has psychological and functional meaning to the sight-disabled people under given circumstances. It suggests that there is another space among the physical borders and analyzes the utilization clue in the entry space, which is the first starting point that can transfer, and obstacle factors which may happen at that point. And, it also wanted to present the surrounding environmental improvement ways for walking which is smooth and confident based on them.

• Journal of Multimedia Information System
• /
• 제4권4호
• /
• pp.239-242
• /
• 2017

This paper proposes a low-cost method for counting people based on blob detection and blob tracking. Here background subtraction is used to detected blob and then the blob is classified with its width and height to specify that the blob is a person. In this system we first define the area of entry and exit point in the video frame. The counting of people starts when midpoint of the people blob crosses the defined point. Finally, total number of people entry and exit from the place is displayed. Experiment result of this proposed system has high accuracy in real-time performance.

• 한국원자력학회:학술대회논문집
• /
• 한국원자력학회 1999년도 춘계학술발표회요약집
• /
• pp.365-365
• /
• 1999

• 한국실내디자인학회논문집
• /
• 제15권1호
• /
• pp.106-112
• /
• 2006

Buildings undergo changes by various factors according as pass at time. Due to that social requests and issues form one common sense of value and this would influence the architect's design intention. In fact, the form and function of buildings have coped with transition of the common sense of value by each times. Hospital architecture is also changed in function, scale and technology since, Kwanghyewon which was the first western style hospital in Korea was established in 1885. It is changing that the social needs for hospital which was a basic function of healing to laying emphasis on the function of precaution. According to this, the change of hospital spaces means that it can promote healing environment which is expanded from the modern concept of isolation, accommodation and urban sanitation. These changed concepts were adopted limited areas in hospitals at first however, nowadays they are expanding to other areas. So, this is caused to make the image of the hospital. From this point of view, Entry space is an example to show the changes. This study is intended to determine the overall space structure of entry area and to classify and analyze the difference.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2009년도 춘계학술대회 논문집 특별세미나,특별/일반세션
• /
• pp.483-488
• /
• 2009

When a train enters into the tunnel with high speed, a compression wave generated inside the tunnel has been studied as a one-dimensional phenomenon. However, one-dimensional approach can't analyze 3-dimensional flow effect in the vicinity of the train body. In this research, so as to overcome this weak point, a prediction method of the wavefront of a compression wave using steady state solution has been used for the parametric study considering 3-dimensional effects of the interactions between trains and tunnels. The effective hood shapes were deduced in both cases of the train's entry into the tunnel on the single track and on a side of the double track. As a result, in case of the train's entry on a side of the double track, the increase of compression wave value propagated to the tunnel inside have appeared compared with the train's entry on the single track. Also, a horizontally convex elliptic hood shape is more effective at the train's entry on a side of the double track for the purpose of a decrease of wavefront gradient of a compression wave.

• 한국도로학회논문집
• /
• 제15권1호
• /
• pp.143-154
• /
• 2013

PURPOSES: Design of approach roads of rest areas in highway has many drawbacks such as geometric design elements. There has been traffic accidents occured in these approach roads of rest areas. Thus, design criteria is required in order to protect accidents from being occurred. In case of Korea, geometric structure design criteria of entry facilities, such as toll-gate, interchange, junction etc was established. However there are no presence in a detailed standards for geometric structure of the rest area which affiliated road facilities. METHODS: In this study, analytic on accidents was carried out in regards to the entry of geometric structure of resting areas by utilizing a sight survey and an investigation research of traffic accidents. The survey was targeting 135 general service areas. Collisions with physical channelization and safety facilities occurred due to speeding, rapid entry, and etc at the entrance nose section. At the entrance connector roads, accidents caused by speeding, negligence, over-operation of handle of drivers were main reason of accidents. Discriminant analysis were conducted about geometric elements to distinguish influencing factors for traffic accidents. the lengths and access angles of the entrance connector roads were regarded as to have the high relation with traffic accidents. RESULTS: After classifying the design section of resting areas' entry as well as derive design elements on each section, a speed measurement by targeting entry of rest areas and car behavior surveys were performed, then each element's minimum standard was derived through the analyses. According to the speeds at the starting/end point of entrance connector road, the range of the junction setting angle of the entrance connector road is defined as $12^{\circ}{\sim}17^{\circ}$ and the connector length model was suggested. CONCLUSIONS: Suggest improvement plans for existing rest areas that can be applied realistically. This should be corresponded to the standards of entry and exit of developed rest areas.

• 한국추진공학회:학술대회논문집
• /
• 한국추진공학회 2007년도 제28회 춘계학술대회논문집
• /
• pp.7-12
• /
• 2007

액체로켓엔진에서 고주파 연소불안정을 제어하기 위하여 다단 접선 유입구를 갖는 스월 인젝터를 분석하였다. 음향흡수자로서 인젝터의 효과를 분석하기 위하여 인젝터는 1/4 파장 공명기로 해석하였고, 상온에서 감쇠 효과의 적합성을 검증하였다. 이러한 인젝터는 모델 챔버의 고유주파수에 동조 시킬 수 있는 고유주파수를 갖게 된다. 각각의 모드에 동조된 인젝터를 배(anti-node point)에 장착하여야만, 타겟모드의 진폭을 감소시킬 수 있었고, 큰 지름의 인젝터를 사용하였을 때 보다 큰 진폭의 감쇠를 동반하면서 모드 분리 현상이 나타났다. 이러한 실험 결과로부터 타겟모드에 동조된 인젝터를 적당한 볼륨으로 배(anti-node point)에 장착한다면, 모드 진폭이 감쇠하게 되고, 완전한 배(anti-node point)에서는 모드분리현상이 발생됨을 확인하였다.

• 기술경영경제학회:학술대회논문집
• /
• 기술경영경제학회 1999년도 제16회 동계학술발표회 논문집
• /
• pp.281-295
• /
• 1999

This paper analyses the effects of the increase of logistics outsourcing on the economy which are largely classified into three parts. The firm level and industry level are two among them which will be summarized below. The another is consumers level. On the fm level, the logistics outsourcing of a manufacturing firm not only helps to increase the efficiency of itself and but also confront the competitive environments by weakening the entry barriers, i.e., the emergence of contestable market. The reasons why the efficiency of the firm enhances are also largely divided into two parts. One is due to the reduction of inventory cost by replacing it by the information cost resulting from internet use. The other is owing to reducing the life cycle of production process by the emergence of virtual enterprises which are located in one point in De process of supply chain management. The weakening of entry barriers is directly affected by the drastic increase of internet users in twofold reasons: one is based on the restricted competitive characteristics due to the long-term transaction relationship between logistics providers and the companies who offer logistics services and the other, due to the weakening of the restriction of space and time. The effect of industry level is due to the transition of traditional to virtual vertical integration system The firms corresponding to a connection point in the process of supply chain management would try to realize both the scale of economy and the scope of economy for strengthening the competitiveness. We indicated above the emergence of contestable market however, it is a short-term phenomenon and result in the oligopoly market due to the entry barriers in the long-run sense.

• 한국시뮬레이션학회논문지
• /
• 제28권2호
• /
• pp.71-79
• /
• 2019

본 연구는 비행체의 목표지와 진입방향이 정해졌을 때, 목표지점 3차원 모델의 형상과 비행체의 원형공산오차를 고려하여 최종 목표점을 자동으로 생성해 내는 기법에 대한 것이다. 기존에는 목표점을 사용자가 경험에 의존하여 선정하거나 단순히 중심으로 선정하는 경우가 많았고, 진입방향이 정해지기 전 선정하였기 때문에 최적의 위치를 선정할 수 없었다. 본 연구에서는 진입방향이 결정된 후 자동으로 목표점을 생성하여 이러한 문제들을 해결하고자 하였다. 기법은 크게 참조면 및 진입 후보점을 생성하는 단계, 각 진입 후보점의 점수를 계산하는 단계, 마지막으로 최종 목표점을 계산하는 총 3개의 단계로 이루어져 있으며, 본문에서는 각 단계에 대한 설명과 다양한 테스트케이스를 이용한 실험 결과를 기술한다. 본 연구를 통해 사용자는 비행체가 정상진입이 가능할 확률이 높은 목표점을 손쉽게 확인 및 적용 할 수 있다.

• 대한토목학회논문집
• /
• 제38권6호
• /
• pp.879-885
• /
• 2018

고속도로 위빙구간은 진입과 진출차량에 의한 상충이 발생되는 지점으로 본선과의 영향을 최소화하기 위하여 집산로를 설치토록 하고 있다. 집산로의 설계속도는 50km/h이나 실제 운전자는 설계속도에 맞춰 적정한 감속이 이루어지지 않고 있다. 따라서 본 연구에서는 운전행태, 설계기준차량제원, 운전자의 시야각등을 고려하여 차량의 안전한 진출입을 위해 고어 노면표시 끝에서 합류지점까지 적정 이격거리를 검토하였으며 분석결과 합류가능지점에서 약 60m의 이격거리가 필요한 것으로 분석되었다. 향후 본 연구결과를 집산로가 설치된 위빙구간에 적용시 진출입 차량간 상충으로 인한 운전자의 안전성 증진에 기여할 것으로 판단되며 집산로가 설치된 고속도로 위빙구간의 노면표시 설치기준으로 재정립 될 것으로 기대된다.