• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2016.05a
• /
• pp.612-613
• /
• 2016

Today, a variety of systems have been developed to protect women and children. However, crime rates are still rising in the Green Zone. So we need the system to protect it. In this paper, we propose a system that sends messages in real time to the Green Zone administrator when a registered offender access to the Green Zone area. The existing system is a passive data transmission through monitoring. But the proposed system when access to the Green Zone set, detects a GPS-based. Accordingly, It is expected to be able protection through to monitor in real time and manage for women and children from criminals.

• The KIPS Transactions:PartB
• /
• v.15B no.6
• /
• pp.533-542
• /
• 2008

Background subtraction from video data is one of the most important task in various realtime machine vision applications. In this paper, a new scheme for background subtraction based on the hexagonal pixel sampling is proposed. Generally it has been found that hexagonal spatial sampling yields smaller quantization errors and remarkably improves the understanding of connectivity. We try to apply the hexagonally sampled image to the LBP based non-parametric background subtraction algorithm. Our scheme makes it possible to omit the bilinear pixel interpolation step during the local binary pattern generation process, and, consequently, can reduce the computation time. Experimental results revealed that our approach based on hexagonal spatial sampling is very efficient and can be utilized in various background subtraction applications.

• Journal of IKEEE
• /
• v.7 no.2 s.13
• /
• pp.188-196
• /
• 2003

In this paper, a demultiplexer for MPEG-2 Transport Stream which can be applied to terrestrial digital broadcast is developed. The demultiplexer separates video, audio, and data from MPEG-2 multimedia stream and transports them to each decoders respectively. While most existing demultiplexers of MPEG-2 transport stream have been developed as hardware systems, but the fast increment of computer's performance enables a software demultiplexer to be worked in realtime. The developed demultiplexer is implemented as a software module called a filter using DirectShow of Microsoft which is based on COM(Component Object Model)and works on the Windows system. The operation of the demultiplexer is verified by using the GraphEdit tool and rendering a test file formatted as MPEG-2 transport stream.

• The Journal of Korean Association of Computer Education
• /
• v.12 no.2
• /
• pp.77-86
• /
• 2009

Large-scale applications, that needs large-capacity R&D resources and realtime data transmission, have demanded more stable and high-performance network environment than current Internet environments. Recently, global R&D networks have focuses on utilizing Lambda networking technologies and resource reservation systems to be satisfied with various applications' requirements. In this paper, we modify the existing DRS (Dynamic Right-Sizing) model to reflect various advantages in terms of the stability and high-capacity of Lambda network. In addition, we suggest the design methodology of high-performance Lambda network, which can integrate NRPS (Network Resource Provisioning System) into our modified DRS model.

• Journal of the Korea Society of Computer and Information
• /
• v.21 no.6
• /
• pp.63-69
• /
• 2016

In this paper, we proposed the location tracking system based on MS-Based/Assisted(Mobile Station-Based and Assisted) location trigger service model with context-awareness for the intelligent location tracking of moving objects. It provides the proper resulting value that matches the context of users through the analysis about the situation of the user, physical environment, computing resource and the existing information on user input. In order to provide real-time data, we proposed the location tracking system which realizes the intelligent information such as the expecting arrival time and passing the specific area of the moving object by adopting the location trigger. So, it derives to minimize the costs of communication for the mobile object tracking applications. The proposed location tracking system based on context-awareness can be used for realtime monitoring, intelligent alarm/action, setting up of the optimized moving path, dynamic adjustment of strategies and policies. So it has the advantage to develop the application system which is aimed at optimization of the object tracking and movement.

• Water Engineering Research
• /
• v.7 no.1
• /
• pp.21-28
• /
• 2006

The scouring process is complex and subject to many factors. Recently, experiments for real-time bridge scour monitoring have been active as means for a more reliable scour prediction. Riverbed materials are an important factor in bridge scouring; therefore, an accurate estimation of riverbed material is critical in predicting a scour. As a part of this approach, an ultrasonic sensor, which can not only detect river bottom during floods but can also be installed lose to the underwater structures, was developed. This sensor is able to map the river bottom using an ultrasonic waves with the characteristics of the returning wave, reflected from an object or bottom ground. The reflected wave is unique according to the situations, or materials below. Therefore, it would be possible to identify the consisting materials of a riverbed if we could reveal each characteristic in the received signals. In this study, a preliminary experiment was performed in the laboratory to identify and classify received signals, which is unique to each material. The analysis of this experiment gives the graph, which makes it possible to identify materials of the river bottom through the ultrasonic signals. The proposed graph was verified through a comparison with the actual field data measured in river.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.18 no.4
• /
• pp.415-421
• /
• 2000

The purpose of this study is to develop the AM/FM system for a university using internet GIS. Because the developed system has an additional Java Applet functions, web user can execute dynamic data processing including static HTML GUI. The developed internet AM/FM system could be used for effective management work exact search and inquiry of both graphic information and attribute information rapidly. Also, it has the functions of mapping, attribute and spatial information searching, spatial query processing, etc.. Besides, this system could be used for realtime facility in any place or office using internet.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.30 no.6B
• /
• pp.355-368
• /
• 2005

The need for a unified data communication for home digital devices and realtime multimedia services in home network has led to recent research on home gateway over the broadcasting and communication convergence network. In this paper, we discuss requirement for such home gateway design and define services that the home gateway provides. Then, we propose a home gateway architecture aimed to efficient multimedia distribution for heterogeneous devices in the home network. The proposed home gateway has a role of protocol gateway, media server, and media trans-coder. Finally, we show the feasibility of the proposed home gateway in several multimedia distribution scenario.

• Journal of Korean Medicine Rehabilitation
• /
• v.28 no.2
• /
• pp.37-45
• /
• 2018

Objectives This study was designed to investigate whether the Gagamtongsoon-San (GT) has an inhibitory effect and its mechanisms are associated with the iNOS and COX-2. Methods Cytotoxic activity of GT extract on RAW264.7 cells was evaluated by using 3-[4, 5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide (MTT) solution. Inflammatory condition was induced by LPS. NO production was measured using Griess reagent system. The expressions of iNOS and COX-2 mRNA and protein were determined by realtime PCR. The concentrations of PGE2 were measured by an enzyme immunoassay (EIA). Results The GT does not impair the cell viability in tested concentration $500{\mu}g/ml$ or below. GT significantly reduced the NO production in a dose-dependent manner. GT $500{\mu}g/ml$ also suppressed LPS-induced mRNA expressions of iNOS and COX-2. GT $500{\mu}g/ml$ reduced the PGE2 secretion in LPS induced RAW264.7 cells. Conclusions These outcomes show that GT extract has an anti-inflammatory activities. And also this conclusion can be the data that supports the GT's anti-inflammatory effect objectively.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• v.9 no.2
• /
• pp.1107-1111
• /
• 2005

The DVR system realization with watermarking and MPEG-4 for real time processing speed improvement is presented in this paper. For the real time processing the system is used the DSP processor, Quick DMA for data transmission, watermarking for security and MPEG-4 compression for facility. The algorithms are that the operational structure has the internal memory of processor, and the optimal realization is suitable to form the DSP processor structure r processed for the iterative operations. The experimental result shows the real time processing is improved 12% over for the D1 image in comparison with the other system.