• Journal of Engineering Education Research
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• v.5 no.1
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• pp.19-26
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• 2002

This paper presents a virtual laboratory system which can be creating efficiencies in the learning process. The proposed virtual laboratory system for electrical circuits provides interactive learning environment under which the multimedia capabilities of world-wide web can be enhanced. The virtual laboratory system is implemented to describe the on-campus laboratory, the learners can obtain similar experimental data through it. In the proposed virtual laboratory system, every activity occurred in the virtual laboratory will be recorded on database and printed it out on the preliminary report form. The database connectivity is made by PHP and the virtual laboratory environment is set up slightly differently for each learner The virtual laboratory system is composed of four important components : Principle classroom, Simulation classroom, Virtual experiment classroom and Management system. Learning efficiencies as well as faculty productivity are increased in this innovative teaching and learning environment.

• Korean Journal of Acupuncture
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• v.28 no.4
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• pp.79-89
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• 2011

Objectives : The aim of this study is to propose the W area of pulse (AW) as a new index which can confirm the arteriosclerosis by analyzing parameters of 5-level pressure pulse waveform measurement system for normotensive group according to aging. Methods : We measured radial pulse waveforms of normotensive group (20 to 60 years old) using 3-dimensional pulse imaging analyser (DMP-3000, DAEYOMEDI Co., Korea). And then we analyzed various parameters for sclerosis of the arteries such as Height (h1, h2, h3, h4, h5), Time (t1, t2, t3, t4, t5), AW, AW rate, Total area of pulse (At) and Augmentation Index (AIx). Results : As a result of analyzing parameters according to the aging, h2, h3, AS (systolic area rate to AT), AIx and AW were increased but t2/t, t3/t, t5/t and AD (diastolic area rate to AT) were decreased. Conclusions : We checked blood vessel conditions for normotensive group according to aging and confirmed various parameters. Also, we found that AW was analogous to AIx which has been used for diagnosing arteriosclerosis. Furthermore, we confirmed the usefulness of AW as a new parameter for checking vessel condition and characteristic compared with the AIx.

• Korean Journal of Acupuncture
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• v.28 no.1
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• pp.53-60
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• 2011

Objectives : Cupping therapy has been used as various treatment methods in oriental medicine clinic for a long time. Specially, Cupping stimulation caused skin hyperpigmentation which has been used as diagnosis method for extravasated blood & inner organs functional disease. But it was difficult to quantitatively measure and analyze the interrelation between extravasated blood and skin hyperpigmentation. The aim of this study is to measure the acupoint's RGB and melanin change pattern by stimulating under fixed 80kPa negative pressure and to evaluate the extravasated blood. Methods : To evaluate extravasated blood, 10 acupoints (left/right BL13, BL15, BL18, BL20, BL23) were stimulated by treatment 80kPa negative pressure for 1 minute. And then we measured the acupoints' skin color change patterns using the color meter, followed by RGB analysis and melanin change pattern. Results and Conclusions : We could observe the correlation of the acupoints' skin color condition related with RGB change pattern. All acupoints' color change degree were different. Regardless of acupoints' color degree due to extravasated blood, we observed in common the fact that RGB values decreased after stimulation and steadily increased according to time. We observed that melanin index increased after stimulation and recovered before stimulation-condition after the lapse of time. In other words, we confirmed the correlation between raised color change degree and $L^*a^*$ index change pattern. Therefore we observed the possibility of charting the $L^*a^*$ index following extravasated blood.

• Korean Journal of Acupuncture
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• v.27 no.2
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• pp.107-120
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• 2010

Objectives : The aim of this study is to measure pulse waveforms by applying 5-level graded pressure, and selecting optimum pulse waveforms. Also to proposing the possibility of using AW(Area of the 1/3 upper height of h1) rate in respect to AT(Total Area) for risk assessment of hypertension or arteriosclerosis is another aim of the study. Methods : Pulse waveforms of normotensive were measured by 5-level graded pressure. The pulse waveforms well reflecting properties of blood vessel(having the largest h1) were selected for optimum pulse waveforms. Various parameters(h-parameter, t-parameter, and others) of optimum pulse waveforms were analyzed. AIx(Augmentation index) was calculated by height-parameters to assess arterial stiffness. The area rate of the 1/3 upper height for h1 in respect to total area was analyzed according to aging. Results : According to aging 1. in height-parameter, h2 and h3 were increased but h5 was decreased. 2. In time-parameter, t2, t3, and t5 were getting short. 3. Area of systolic period was increased, and that of diastolic period decreased. 4. AIx rose by aging. 5. AW was significantly increased despite no changes in AT. Conclusions : By analyzing optimum pulse waveforms of 5-level graded pressure method, we could complement weakness of single graded pressure method. Also, possibility of applying the AW rate to risk assessment of hypertension or arteriosclerosis was confirmed in normotensive population which might not be assessed by AIx.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.6
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• pp.1639-1646
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• 2008

This study designed and realized a new type of RFID middle-ware based on .NET Compact Framework platform using PXA255 embedded board and Windows CE as operating system. The proposed embedded RFID middle-ware system controls via LAN a number of RFID sensors using RS-232 as interface and was designed on the basis of components of each function necessary RFID middle-ware. Application module operating in the SOA environment analyzes the data received from the RFID sensors with the embedded RFID middle-ware and in turn performs appropriate business logic. Client module to be used by end users can use RFID information in database, by web method call of application.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2005.11a
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• pp.453-460
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• 2005

P2P(Peer to Peer) 기술은 잠재적 능력에도 불구하고 컨텐츠의 저작권문제와 보안문제 등으로 인하여 많은 사람들이 충분히 활용하지 못하고 있다. 본 연구는 인터넷 사용자(개인)와 소규모 서버를 운영하는 조직들이 정보 제공, 분배, 공유의 정보시스템 구조를 자신들의 목적에 맞게 자유롭게 만들 수 있는 프레임워크인 오픈웨어 (Openware)의 개발에 관한 것이다. 오픈웨어는 P2P기반 시스템으로 다음과 같은 특징올 갖는다. 1) 다수의 서버와 클라이언트로 이루어지는 구조로, 사용자의 목적에 맞게 집중형 혹은 분산형 구조를 자유롭게 혼합하여 정보시스템을 구성 할 수 있다. 이러한 정보 구조의 유연성은 다양한 형태의 협업(개인과 개인, 개인과 그룹, 그룹과 그룹)이 요구되는 응용 시스템의 기반을 제공한다. 2) 데이터 관점에서 오픈웨어는 개인이 데이터베이스를 손쉽게 생성, 관리 할 수 있고, 자신의, 데이터 혹은 데이터베이스 구조를 다른 사람이나 그룹과 공유 하거나 통합 할 수 있다. 3) 데이터 통신면에서 오픈웨어는 HTTP(HyperText Transfer Protocol) 프로토콜만을 사용하는 웹 기반 시스템으로 인터넷에 연결 되어있는 누구와도 오픈웨어를 통해 협업이 가능하다. 4) 소프트웨어 이름에서 알 수 있듯이 오픈웨어는 Java, JSP, Apache, Resin등 공개소프트어로 만들어져 있고, 오픈웨어 자체도 공개소프트웨어이다. 오픈웨어는 개인과 그룹의 흠페이지 생성과 관리, 파일 공유 기능이 구현 되어있고, 데이터베이스 공유, 통합 기능을 이용하여 개인이나 그룹의 주소록관리, 일정관리 등이 가능하다. 오픈웨어는 사용자 흑은 개발자가 다양한 형태의 응용컴포넌트를 자유롭게 등록하여 기능을 추가 할 수 있는 확장성올 제공하고 있어서, 앞으로 e-메일, 매신저, 전자결재, 지식관리시스템, 인터넷 방송 시스템의 기반 구조 역할을 할 수 있다. 현재 오픈웨어에 적용하기 위한 P2P 기반의 지능형 BPM(Business Process Management)에 관한 연구와 X인터넷 기술을 이용한 RIA (Rich Internet Application) 기반 웹인터페이스 연구를 진행하고 있다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.3
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• pp.670-678
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• 2004

In oriental medicine, meridian is pathway of bio-energy, and basic an object of diagnosis/therapy. But, in western medicine, meridian has been accepted as action pathway of nerve-endocrine-immune system. Acupuncture effect has been regarded as not effect by transmission of bio-energy but action or response by stimulation. In this paper, when an acupuncturist's bio-energy is passed on(non-insulation) and when is not(insulation), we analysed electric potential on meridian/non-meridian to verify effect of acupuncture therapy. In the results, when bio-energy isn't passed on, bio-potential is reacted to only the first of 4 times acupuncture operating. But when bio-energy is passed on, it is reacted to 4 times, and potential on meridian is higher than that of on non-meridian. Electric potential for same acupuncture operating is different on non/meridians, which implies that physiological construction and bio-energy transmission material is different respectively. When is extracting acupuncture method, potential is higher than that of injection one. It implies that extracting method is more effect than injecting one, in aspect of acupuncture therapy effect. Therefore, acupuncture therapy effect is verified as effect of response by acupuncturist's bio-energy transmission rather than that by only acupuncture stimulus.

• Journal of the Institute of Convergence Signal Processing
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• v.4 no.3
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• pp.27-33
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• 2003

The image-based 3D modeling is the technique of generating a 3D graphic model from images acquired using cameras. It is being researched as an alternative technique for the expensive 3D scanner. In this paper, we propose the image-based, 3D modeling system using calibrated stereo cameras. The proposed algorithm for rendering, 3D model consists of three steps, camera calibration, 3D reconstruction, and 3D registration step. In the camera calibration step, we estimate the camera matrix for the image aquisition camera. In the 3D reconstruction step, we calculate 3D coordinates using triangulation from corresponding points of the stereo image. In the 3D registration step, we estimate the transformation matrix that transforms individually reconstructed 3D coordinates to the reference coordinate to render the single 3D model. As shown the result, we generated relatively accurate 3D model.

• Journal of the Institute of Convergence Signal Processing
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• v.12 no.1
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• pp.7-12
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• 2011

In this paper, we propose the technique detecting interest object region effectively in the images from periscope of submarine based on self-generated template. First, we extract the sea-sky line, and divide it into sky and sea area from background region based on the sea-sky line. In each divided background region, the blocks which can be represented in each background region are set as a reference template. After dividing an image into several same size of blocks, we apply multi template matching to the divided search blocks and histogram template to divide the image into object region and background region. Proposed algorithm is adapted to various images in which objects exist in the background of sea and sky. We verified that proposed algorithm performed properly without given informmed prby prior learning.ropso, regardless of the slope of sea-sky line and the locmed p of object based on sea-sky line, we verified that the objects region was segmented effectively from the input image.

• Korean Journal of Acupuncture
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• v.26 no.4
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• pp.1-11
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• 2009

Objectives : The object of this study is measuring energy (skin capacitance) distribution on the specific acupionts and analyzing change patterns of meridian energy according to time or synchronous time. Methods : To check energy distribution using the meridian energy measurement system(DMM-1000), ten specific acupoints(ST34, ST36, ST40, ST41, ST42, ST43, ST44, ST45, BL21, CV12) were chosen. We checked the energy distribution and analyzed the change patterns before and after meal. We checked the state of the energy of ST meridian which is considered to have relation to stomach organ activity. Based on the hypothesis regarding energy difference due to Qi flowing, we compared energy potential on 10 specific acupoints. Results and Conclusions : Electric energy of each specific acupoint was different according to subjects and time. Through this study, we proposed an indispensable condition of energy difference due to Qi flowing through meridian.