• Journal of Korea Fair Competition Federation
• /
• no.32
• /
• pp.14-23
• /
• 1998

• Journal of Korea Fair Competition Federation
• /
• no.162
• /
• pp.28-37
• /
• 2012

• Journal of Korea Fair Competition Federation
• /
• no.162
• /
• pp.38-45
• /
• 2012

• Journal of Korean Society of Transportation
• /
• v.35 no.3
• /
• pp.197-209
• /
• 2017

With the advent of age that people spend more time and money on leisure activities, there is increasing interest in professional sport games. The location of large scale sport facilities has substantial impacts on existing transportation pattern because the facility attracts and generates massive traffic volume within a short period of time. This study aims to develop a mode choice model of leisure trips of which the destinations are a sport facility. A structured SP (stated preference) survey questionnaires were developed through an experimental design, and professional sport spectators were asked to state their preference in the choice of transport mode to the sport facility. The survey results show that public transportation is preferred to passenger cars for their trip to big sports event, implying that the convenience of back home trip after the event is an important factor of their mode choice. This study is a rare research on the trip pattern to sports complex in Korea, which provides policy implications on the provision of mass transit including subway system to large scale sport complexes. And it is also expected that this study contributes to future researches on leisure trip pattern.

• The Journal of the Convergence on Culture Technology
• /
• v.9 no.3
• /
• pp.391-398
• /
• 2023

This study focuses on the potential for creating spatial and atmospheric effects in small theaters using mobile stage equipment, without being constrained by physical space or theater facilities, for mega musical productions. With the continuous growth of mega musicals in the domestic market, the study analyzes the distribution and sales of musical works in Korea and proposes methods for creating spatial effects in university musical education to facilitate the production of mega musicals in small theaters. The mobile stage equipment is designed based on the principle of the periaktoi, a stage mechanism used in ancient Greek theater and the characteristics of mobile stage equipment used in musicals such as <Notre Dame de Paris> and <Laundry>. The mobile stage equipment is a four-sided column-shaped device, which is applied to the musical <Les Misérables> to derive the potential for creating spatial effects, representing the inner state of characters, and forming the mood of the drama. The study is expected to provide opportunities for performing mega musical productions in university musical education and to contribute to the development of the musical industry and education. The utilization of mobile stage equipment demonstrates the possibility of producing mega musical productions in small theaters.

• Geophysics and Geophysical Exploration
• /
• v.19 no.4
• /
• pp.228-235
• /
• 2016

We investigated pre- and post- seismic total electron content (TEC) anomalies in ionosphere caused by recent large-scale earthquakes around the globe and additionally examined whether the similar phenomena are detected in connection with the earthquakes around the Korean Penisula. TEC anomalies associated with the large-scale earthquakes showed the similar results to previous studies. In addition, we newly found the similar TEC changes from the recent 2016 Ecuador earthquake (M7.8). However, the post-seismic TEC changes would be falsely interpreted as the pre-seismic TEC changes dependent on the post-processing of TEC observation. We also investigated the possibility of TEC responses from the recent domestic earthquakes including 2016 Gyeongju earthquake but could not find any anomalous TEC changes. This is probably because the domestic earthquakes release significantly smaller acoustic wave energy than that of large-scale earthquakes occurring in plate boundaries.

• Proceedings of the Korean Information Science Society Conference
• /
• 2006.10c
• /
• pp.570-574
• /
• 2006

인터넷 보급에 따라 웜에 의한 피해가 꾸준히 이어지고 있다. 인터넷 웜을 방어하기 위해서는 웜에 대한 연구가 이루어 져야하는데 웜을 연구하기 위해 대규모 네트워크를 구성하여 연구하기에는 어려움이 따르게 된다. 그래서 실제 네트워크를 구성하는 대신 시뮬레이션을 이용한 연구가 이루어지게 되었는데 시뮬레이션이라 할지라도 대규모 네트워크를 시뮬레이션 하는 것은 여러 문제점이 존재하게 된다. 그래서 본 논문에서는 대규모 네트워크를 시뮬레이션 하기위해 네트워크 모델링 시뮬레이션 방법을 기본으로 한 패킷 네트워크를 이용한 네트워크 모델링 시뮬레이션 방법에 대해 제안을 하였다. 이 방법을 기존의 대규모 네트워크 시뮬레이션의 문제를 패킷 네트워크와 모델링 네트워크가 서로 보완을 하여 해결하도록 구성되어 있다. 그리고 제안한 방법을 이용하여 웜의 전파를 실험한 시뮬레이션을 수행해 보았다.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.19 no.2
• /
• pp.254-265
• /
• 1994

For solving the optimal routing problem (ORP) in large data networks, and algorithm called the hierarchical aggregation/disaggregation and decomposition/composition gradient project (HAD-GP) algorithm os proposed. As a preliminary work, we improve the performance of the original iterative aggregation/disaggregation GP (IAD-GP) algorithm introduced in [7]. THe A/D concept used in the original IAD-GP algorithm and its modified version naturally fits the hierarchical structure of large data networks and we would expect speed-up in convengence. The proposed HAD-GP algorithm adds a D/C step into the modified IAD-GP algorithm. The HAD-GP algorithm also makes use of the hierarchical-structure topology of large data networks and achieves significant improvement in convergence speed, especially under a distributed environment. The speed-up effects are demonstrated by the numerical implementations comparing the HAD-GP algorithm with the (original and modified) IAD-GP and the ordinary GP (ORD-GP) algorithm.

• KIPS Transactions on Computer and Communication Systems
• /
• v.1 no.3
• /
• pp.161-170
• /
• 2012

In recent years, many researchers and developers have been interested in renewable energy all over the world. Particularly, the development of wind power is being processed actively due to its high economic efficiency. A few years ago, Korean government has started the research for building a large-scale offshore wind farm in domestic west-southern area. Current domestic SCADA technology level for operating wind farm is very low compared with foreign SCADA technology level. In this paper, we found IT issues and solutions for developing SCADA system. Based on these solutions, we designed SCADA system for a large-scale offshore wind farm.

• Journal of KIISE:Computing Practices and Letters
• /
• v.16 no.11
• /
• pp.1041-1045
• /
• 2010

Clusters can provide scalable and flexible architectures for parallel computing servers and data centers. Their performance prediction has been a very challenging issue. Existing performance measurement methodologies are able to measure the performance of servers already constructed. Thus they cannot provide a way to predict the overall system performance in advance when designing the system at the initial phase or adding more nodes for more capacity. Therefore, the performance modeling and prediction methodology for large-scale clusters is highly required. In this paper, we suggest a methodology to predict the performance of large-scale clusters, which consists of measurement, modeling and prediction steps. We apply the methodology to a real cluster server and show its usefulness.