• 산업경영시스템학회지
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• 제32권4호
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• pp.215-222
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• 2009

Human voice reacts very sensitively to human's minute physical condition. For instance, human voice disorders affect patients profoundly especially in the case of Parkinson's disease. Acoustic tools such as MDVP, can function as an equipment that measures various voice in different objects. Many different approaches have been applied for analyzing the voice disorders for diagnosis of Parkinson's disease. According to the voice data of suspected Parkinson's patients from UCI Machine Learning Repository, it is reported to have 23 people with Parkinson's disease and 8 healthy people. Applying Mahalanobis Taguchi System (MTS) for diagnosis of Parkinson's disease, the correct diagnosis performance is compared to previous research results.

• 대한안전경영과학회지
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• 제4권3호
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• pp.67-78
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• 2002

Automated manufacturing systems are applied to shop floors as tools for increase of productivity and quality and the decrease of manufacturing lead times and industry accidents. One of the most important issue of the present day is the application of Internet. The development of Internet technologies makes manufacturing enterprises break spacial barriers between users and shop floors, and collect various field data in remote sites. In this research, an Internet-based remote control system for a small-sized automated storage and retrieval system is developed for the purpose of real-time monitoring and control of automatic production equipment. The developed system has a client-server architecture and sends real-time images of the automated storage and retrieval system to clients by an CCD camera connected to a server.

• 대한전기학회논문지:시스템및제어부문D
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• 제55권6호
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• pp.279-285
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• 2006

Power line communication channels are very complicated and models for communication channels vary with the types of electrical equipment, devices and load fluctuations. So, modeling and analysis of power line channels for implementation of power line communication systems is a very important process. Power line channel modeling and simulation are performed based on power system transient simulation models and power system CAD tools to create precise and accurate models. In this paper, a channel modeling and simulation method is proposed for power line communication systems using PSCAD/EMTDC, in which a PN 63 sequence code generator is applied for impulse response of the power line channel in the simulation model.

• 산업공학
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• 제12권2호
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• pp.237-246
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• 1999

The Automated Storage/Retrieval System(AS/RS) is very expensive to be built. But there are few tools available which can be used to design the storage systems optimally considering overall system building costs and constraints. In this paper, we propose a design support system for optimal design of AS/RS which includes different sized cells using expert systems and mathematical models considering customer's demands. The optimization models are to be used to minimize the total cost including building, equipment and operation costs. Expert system technique is utilized for using the experiences of skilled designers. By using the proposed system, AS/RS can be designed accurately, economically and efficiently.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.95-96
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• 2007

Dissolved gas analysis (DGA) is one of the most widely used diagnostic tools for detecting and evaluating faults in electrical equipment. However, interpretation of DGA results is often complex and should always be done with care, involving experienced insulation maintenance personnel. KEPCO (Korea Electric Power Cooperation) has been using DGA technique since KEPCO established the criteria of DGA in 1985. In this paper, we introduce the DGA criteria of KEPCO and analyze the result of DGA. Also we sort pattern in result of DGA. Then, relation between pattern and inner inspection was studied. 67 DGA data was used for analyzing pattern. Some patterns have something to do with cause of incipient fault.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2005년도 추계학술대회논문집
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• pp.887-890
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• 2005

The earthquake test Procedures specified in three international codes were reviewed and compared for the network equipments. As technical level on the electronics and networking is growing in Korea, many related equipments are required to export to abroad. The network equipments are now essential tools for communication among individuals as well as societies, especially at the hazard situation such as earthquake strike. The Korean network companies are trying to improve the earthquake resistance performance for their products to expand domestic and international markets. In this paper it is reviewed that most codes related on the earthquake tests can be performed with the facilities provided in Korea for the network equipments. However new facility is required to prepare for more performance and higher regulating codes expected.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 1997년도 추계학술대회논문집; 한국과학기술회관; 6 Nov. 1997
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• pp.385-390
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• 1997

In recent years there has been an increasing emphasis on shortening design cycles for bringing products to market. This requires the development of computer aided engineering tools which allow analysts to quickly evaluate the effect of design changes on noise, vibration, and harshness. Statistical Energy Analysis (SEA) modeling is a valuable tool for predicting noise and vibration as SEA models are inherently simpler and more robust than deterministic models. SEA modeling can be combined with design sensitivity analysis (DSA) to identify design changes which give the largest performance benefit. This paper describes SEA modeling of an equipment cab. SEA predictions are compared to test data, showing good agreement. The use of design sensitivity analysis in improving cab design is then demonstrated.

• 유공압시스템학회논문집
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• 제5권3호
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• pp.15-22
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• 2008

The road simulators have become common tools within the automotive industry for evaluation of vehicle and vehicle system durability performance. These simulators need appropriate input signal generation algorithms to realize the actual driving conditions due to non-linear vehicle and test rig behaviour. Although somewhat unconventional from a control standpoint, the iteration approach has proven to be a very effective method for control of complex, multiple degree-of-freedom systems where the tracking parameter is known a priori. In this paper, the road profile replication algorithm is verified by applying Belgian road to the developed road simulator. The simulation and experimental results are included to evaluate the performance of this simulator. This road simulator provides considerable savings in cost, development time, and testing risk during developing automotive components.

• 대한의생명과학회지
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• 제24권4호
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• pp.319-328
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• 2018

The purpose of this study is to identify the factors influencing the stress of the elderly women by various tools and to provide basic data for adaptation to the aging women. For this purpose, stress was measured by stress measuring equipment (HRV) and stress measurement questionnaire (SRI) in 31 elderly women over 60 years old. In summary, the results of this study suggest that the worse the subjective health, and when there is a spouse, it predicts a stress. In order to reduce the stress of elderly women based on these results, physical health management and environmental factors that can enhance the intimacy between husband and wife are also necessary.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 추계학술대회
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• pp.906-907
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• 2014

금형이나 부품절삭가공 등에 사용하고 있는 공작기계(밀링, 선반)는 Gcode라는 좌표값에 따라 공작기계를 동작시킨다. 공작기계가 많을 경우에는 휴대용 데이터 캐리어(data carrier) 이용하여 각각의 공작기계에 Gcode 데이터를 다운로딩 하고 있다. 현재에는 이러한 불편함을 해소하기 위하여 고가의 최신기술을 도입한 UTP, Wi-Fi, USB, CF 등을 기반으로 Gcode 데이터를 전송하는 시스템을 개발하고 있지만, 과거에 구입한 구형장비의 경우에는 RS-232를 사용하고 있어 데이터 전송이 불편함이 있다. 본 논문에서는 ATmega128을 활용하여 WGTE(Wireless Gcode Transfer Equipment)를 개발하여 시중에 상용화 되고 있는 고가의 장비를 대신할 수 있는 블루투스(bluetooth) 기반의 WGTE를 개발하고자 한다.