• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2003.05a
• /
• pp.115-120
• /
• 2003

This study aims at calculating berth length required of the given volume of containers. For this, unlike previous studies assuming 300,000 TEU per berth as the capacity of a berth, this study attempts to apply more realistic situation such as the distribution of vessel size, lifts per vessel, berth time by vessel size, and average berth occupancy ratio. the result are compared with that of Pusan New port planning.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.22 no.1
• /
• pp.65-84
• /
• 1994

본 연구의 대상지는 미국 뉴욕(New York)주 이타카(Ithaca)시에 있는 코넬대학교 (Cornell University)의 미혼자와 기혼자 대학원생 및 그 가족을 위한 캠퍼스 주택인 Maplewood Park이다. 연구자인 동시에 디자이 너의 입장에서 필자는 다음의 4가지 방법을 가지고 이 Maplewood Park에 대한 이용후 평가(post-occupancy evaluation)를 실시하였다: 1)물리적 흔 적 관찰(observing physical traces), 2)행태 관찰(observing physical traces), 3)면담(interviews), 4)설문지(questionnaires). 본 연구는 주거 환경 의 옥외공간이 가지고 있는 물리적 특징과 성질에 초점을 맞추었다. 본 연 구는 행태 자료 수집에서부터 완성된 주택단지의 개선을 위한 디자인 제안 까지의 전 과정을 보여주며 주거 환경의 실제 이용자인 주택 단지 거주자 로부터 획득한 체계적이고 객관적인 행태와 태도에 관한 자료에 근거하여, 장래에 있을 유사한 주택 단지 건설을 위한 디자인 기준을 제시하고자 한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2022.11a
• /
• pp.51-53
• /
• 2022

MIV(MPEG Immersive Video)의 시험모델 TMIV 는 다시점의 비디오와 깊이(depth) 비디오를 입력 받아 시점 사이의 중복성을 제거한 후 남은 텍스처(texture)와 깊이로 텍스처 아틀라스(atlas)와 깊이 아틀라스를 각각 생성하고 이를 압축한다. 각 화소별 점유(occupancy) 정보는 깊이 아틀라스에 포함되어 압축되는데 압축 손실로 인한 점유맵 오류를 방지하기 위하여 임계값 T = 64 로 설정한 보호대역을 사용한다. 기존에 설정된 임계값을 낮추어 깊이 동적범위를 확대하면 보다 정확한 깊이값 표현으로 부호화 효율을 개선할 수 있지만 보호대역 축소로 점유맵 오류가 증가한다. 본 논문에서는 TMIV 의 부호화기와 보호화기에 비대칭 임계값을 사용하여 보호대역 축소로 인한 점유맵 오류를 보정하면서 보다 정확한 깊이 값 표현을 통하여 부호화 효율을 개선하는 기법을 제안한다. 제안기법은 깊이 동적범위 확대와 비대칭 임계값 기반의 점유맵 오류 보정을 통하여 CG 시퀀스에서 2.2% BD-rate 이득과 주관적 화질 개선을 보인다.

• Fire Science and Engineering
• /
• v.13 no.4
• /
• pp.61-67
• /
• 1999

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2003.04a
• /
• pp.66-71
• /
• 2003

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2001.11a
• /
• pp.38-42
• /
• 2001

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.12 no.6
• /
• pp.68-77
• /
• 2013

This study suggested experimental study results of congestion detection method for intruding vehicle enforcement system. This congestion detection method is developed to determine optimal operation criteria of intruding vehicle enforcement system as detecting traffic congestion. In ITS sector, traffic management systems generally have used a sectional travel speed for congestion detection. However, image sensors have high error rate of congestion detection because of speed error. This study suggested comprehensive congestion detection criteria based on speed and occupancy rate using field studies. As field study results, the proposed intruding vehicle enforcement system using image sensor is capable of accurately detecting the traffic congestion using sectional speed of 20km/h and occupancy rate of 60% as congestion detection criteria.

• International Journal of High-Rise Buildings
• /
• v.9 no.2
• /
• pp.197-212
• /
• 2020

In this study, POE(Post Occupancy Evaluation) evaluation indexes were selected into six categories through the consideration of theories and prior research. Therefore, qualitative supply can be achieved through POE according to the aspect of residential environment after the quantitative supply of mixed-use apartment complex by the population concentration in Seoul due to industrialization and urbanization. As the evaluation elements, detailed survey contents were selected for livability, convenience, comfort, safety, economy, and sociality. Based on the survey contents, six elements were evaluated and analyzed using Data coding and Likert scale after surveying 12 complexes (Urban areas and non-urban areas) in Seoul. As a result of the study, six categories selected as the POE showed that importance of quality of life and safety was developed in high recognition according to high satisfaction with convenience and safety. Sociality showed the lowest satisfaction in the following order : livability, comfort, economy and sociality. Residents' sense of community, interaction with neighborhood, etc., showed low satisfaction, and it seems that it is necessary to improve and supplement the system for the development of mixed-use apartment complex in the future. The detailed characteristics of livability showed high satisfaction of the living room, the front door and the main room which are main uses of housing, and low satisfaction in storage size. The analysis of convenience is that convenient public transportation was the highest, and educational environment and additional facilities were the lowest, showing the advantages and disadvantages of location characteristics. As a result of the analysis of comfort, satisfaction with the landscape area was low and it seems that green space is needed for the development of mixed-use apartment complex in the future. Lastly, regarding the safety, the satisfaction of the access control, the location of security office, etc. were high, however separation of circulation was low. Therefore, it is necessary to clearly separate the circulation between the residence and other facilities in the mixed-use apartment complex.

• The Journal of the Korea Contents Association
• /
• v.16 no.8
• /
• pp.671-680
• /
• 2016

This research suggested a new real-time traffic signal control algorithm using fusion data of the travel time and the occupancy rate. This research applied the travel time data of traffic information system to traffic signal operation, and developed the signal control process using the degree of saturation that was estimated from the travel time data. This algorithm estimates a queue length from the travel time based on a deterministic delay model, and includes the process to change from the queue length to the degree of saturation. In addition, this model can calculate the traffic signal timings using fusion data of the travel time and the occupancy rate based on the saturation degree. The micro simulation analysis was conducted for effectiveness evaluation. We checked that the average delay decreased by up to 27 percent. In addition, we checked that this signal control algorithm could respond to a traffic condition of oversaturation and detector breakdown effectively and usefully. This research has important contribution to apply the traffic information system to traffic signal operation sectors.

• The Journal of the Korea Contents Association
• /
• v.15 no.7
• /
• pp.531-543
• /
• 2015

Benjamin, Lusht, and Shilling(1998) suggested that the level of deposit can be used as a tool to resolve the problem of adverse selection by the leaseholder under the circumstance of information asymmetry. In this respect, this research aims to verify how the level of deposit and monthly rent mitigate the problem of information asymmetry existing in the office market in Seoul. So far, the analysis of the office market in Seoul has been difficult due to the fixed rate of deposit and monthly rent. This research attempts to adopt the concept of occupancy cost, a global standard indicator that would replace the default risk of monthly payment for analyzing the market. As a result of a series of empirical analysis, the lessors tend to add about 9 percent of risk premium to the occupancy cost to hedge against the default risk of monthly payment. It allows for estimating at what extent one should reflect the leaseholder's default risk of monthly payment for operating deposit and monthly rent in the office building lease market.