• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.564-568
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• 2008

In this paper, we develop a vibration pattern editor and a vibration pad controller for a sound-driven vibration system, which can generate diverse vibration effects in realtime by analyzing signals from the sound output of PC. It consists of a DSP system to analyze the sound, a wrist-wearable vibration pad, and its controller. For the vibration pattern editor, we define four elements to describe the pattern the locations of vibrating elements, start time, duration, and vibration intensity. The editor provides a GUI through which users can create such patterns fast and easily, and store them for reuse. We also propose a pattern-interpreting controller. It is able to interpret patterns created by the editor and control the pad accordingly. It can avoid the need to change the controller firmware whenever desired patterns change.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.10
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• pp.4632-4641
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• 2011

The detailed production traceability information is a fundamental element in successful introduction and revitalization of traceability system. In this paper, we propose a production traceability information gathering system which is based on handwritten data digitalization technology in agro-livestock products. By the proposed system, we can effectively gather the detailed production traceability information with digital pen and the management ledger of paper document type by only writing the ledger. The server of the system generates the same digital image as the ledger and converts the handwritten data into digital text to insert the data into the database. Because the system is superior to data gathering system based on PC, PDA and touch screen in mobility, usability, data input speed, suitability in agro-livestock environment, it is possible to effectively gather traceability information of high quality by users even if they have low information ability and insufficient time to input data. We expect that the handwritten data digitalization technology is used to gather document based information in stage of manufacturing, distribution and marketing. In addition, this technology is applied to implementing advanced traceability system with RFID/USN based systems.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.7
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• pp.2586-2594
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• 2010

A pure tone audiometer should be able to produce both pure tone and masking noise with exact sound pressure level and frequency. For such purpose, it is unavoidable to periodically calibrates pure tone audiometer. However, manual acoustic calibration requires not only attention but also long time. It is possible to execute automatically calibration using software if it is PC-based pure tone audiometer. In this paper, we describe auto-calibration software for PC-based pure tone audiometer and dedicated sound level meter which has been implemented upon PC by us. To verify auto-calibration module, we examine whether output of PC-based audiometer calibrated through auto-calibration of this paper satisfies RETSPL of IEC or not.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05a
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• pp.737-740
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• 2003

개인용 컴퓨터의 성능 및 네트워크 속도가 향상됨에 따라 서로 다른 곳에 위치한 다수의 사용자가 동일한 가상 환경을 공유하면서 협업할 수 있도록 해 주는 가상협업환경을 구축하고자 하는 시도가 늘고 있다. 그러나 기존에는 가상협업환경 자체를 구축하기 위한 연구나 단일 시스템에서 사용자와 가상 객체간의 상호작용을 지원해 줄 수 있는 단일 사용자 인터랙션에 관한 연구가 주를 이루었다. 본 논문에서는 가상협업환경을 보다 효율적으로 이용하기 위하여 다수의 사용자가 동일한 가상 환경에서 인터랙션 할 수 있는 방안을 제시하고 있다. 이를 위해 네트워크로 연결된 공유가상 환경에서 한 사용자가 발생시키는 이벤트를 상대방의 가상 환경에서도 반영할 수 있도록 해주는 PC 기반 가상 환경을 구축하였다. 구축된 가상 환경에는 다양한 하이라이트 색을 이용하여 상대방의 행위를 알 수 있는 Awareness 기능 및 동일 가상 객체를 조작하고자 할 때 이를 조정하는 Priority 기능을 포함하고 있다.

• Journal of Digital Contents Society
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• v.14 no.4
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• pp.447-454
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• 2013

As the surveillance CCTVs are increasing every year, big data image processing for the CCTV image data has become a hot issue. In this paper, we propose a Hadoop-based big data image processing technique to recognize a vehicle number from a large amount of automatic number plate images taken from CCTVs. We also implement the vehicle route tracking system that displays the moving path of the searched vehicle on Google Maps with the related information together. In order to evaluate the performance we compare and analysis the vehicle number recognition time for a lot of CCTV image data in Hadoop and the single PC environment.

• 한국지구물리탐사학회:학술대회논문집
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• 2000.09a
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• pp.147-157
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• 2000

Primary purpose of the system developed in this study is 3-D seismic data processing system for underground investigation and this system is developed in PC based on Linux for lower-cost system. Basic data processing modules are originated from SU (Seismic Unix) which is widely used in 2-D seismic data processing and auxilious modules are developed for 3-D data processing The system which is constructed by using these data processing modules Is designed to GUI (Graphic User Interface) in order that one can easily control and for this purpose, GTK (Gimp Tool KiT) conventionally adapted in producing Linux application.

• Journal of KIISE:Computer Systems and Theory
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• v.32 no.11_12
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• pp.557-565
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• 2005

This paper presents the development and implementation of a zero-copy file transfer mechanism that improves the efficiency of file transfers for PC cluster systems using hardware-based VIA(Virtual Interface Architecture) network adapters. VIA is one of the representative user-level communication interfaces, but because there is no library for file transfer, one copy occurs between kernel buffer and user boilers. Our mechanism presents a file transfer primitive that does not require the file system to be modified and allows the NIC to transfer data from the kernel buffer to the remote node directly without copying. To do this, we have developed a hardware-based VIA network adapter, which supports the PCI 64bit/66MHz bus and Gigabit Ethernet, as a NIC, and implemented a zero-copy file transfer mechanism. The experimental results show that the overhead of data coy and context switching in the sender is greatly reduced and the CPU utilization of the sender is reduced to $30\%\~40\%$ of the VIA send/receive mechanism. We demonstrate the performance of the zero-copy file transfer mechanism experimentally. and compare the results with those from existing file transfer mechanisms.

• Journal of KIISE:Computer Systems and Theory
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• v.34 no.9
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• pp.416-424
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• 2007

The Bio-Inspired system is a computing model that emulates the objects in ecosystem which are evolving themselves and cooperate each other to perform some tasks. Since it could be used to solved the complex problems that have been very difficult to resolve with previous algorithms, there have been a lot of researches to develop an application based on the Bio-Inspired system. However, since this computing model requires the process of evolving and cooperating with a lot of objects and this process takes a lot of times, it has been very hard to develop an application based on this computing model. This paper presents a parallel simulator for a Bio-Inspired system that is designed and implemented with OMNeT++ on PC clusters, and proves its usefulness by showing its simulation performance for a couple of applications. In the proposed parallel simulator, the functions required in the ERS platform for evolving and cooperating between objects (called Ecogent) are mapped onto the functions of OMNeT++, and they are simulated on PC clusters simultaneously to reduce the total simulation time. The simulation results could be monitored with a GUI In realtime, and they are also recorded into DBMS for systematic analyses afterward. This paper shows the usefulness of the proposed system by analyzing its performances for simulating various applications based on Bio-Inspired system on PC clusters with 4 PCs.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38B no.5
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• pp.377-384
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• 2013

In order to improve the security strength in the password based user authentication, in which the security vulnerability is increased while the same password is repeatedly used, the OTP(One-Time Password) system has been introduced. In the OTP systems, however, the user account information and OTP value may be hacked if the user PC is infected by the malicious codes, because the user types the OTP value, which is generated by the mobile device synchronized with the server, directly onto the user PC. In this paper, we propose a new method, called DTOTP(Dual Transmission OTP), to solve this security problem. The DTOTP system is an improved two-factor authentication method by using the dual transmission, in which the user performs the server authentication by typing the user account and password information onto the PC, and then for the OTP authentication the mobile device scans the QR code displayed on the PC and the OTP value is sent to the server directly. The proposed system provides more improved security strength than that of the existing OTP system, and also can adopt the existing OTP algorithm without any modification. As a result, the proposed system can be safely applied to various security services such like banking, portal, and game services.

• Journal of the Society of Disaster Information
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• v.16 no.1
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• pp.203-209
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• 2020

Purpose: This study aims to support the dispatcher to analysis the architecture type of fire. Method: Analysis the dispatch protocol guideline (released by gyunggi fire brigade) and make the dispatch scenario by site, combustibles, evacuation, fire extinguish systems. Result: After making scenario, develop the system (for dispatcher), is based on the tablet PC. Conclusion: Dispatch systems apply not only fire but rescue and disaster. This study focus on the fire, but It is need to expend the rescue and disaster. in korea, Fire Safety Evaluation and Multishop DB are possible to link to this system.