• Journal of the Korean Institute of Intelligent Systems
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• v.11 no.8
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• pp.746-753
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• 2001

In this paper, we review the basic concept of Evolvable Hardware first. And we examine genetic algorithm processor and hardware reconfiguration method and implementation. By considering complexity and performance of hardware at the same time, we design genetic algorithm processor using modularization and parallel processing method. And we design frame that has connection structure and logic block on FPGA, and embody reconfigurable hardware that do so that this frame may be reconstructed by RAM. Also we implemented ECANS that information processing system such as living creatures'brain using this hardware reconfiguration method. And we apply ECANS which is implemented using the concept of Evolvable Hardware to time-series prediction problem in order to verify the effectiveness.

• Proceedings of the KIEE Conference
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• 2007.10a
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• pp.235-236
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• 2007

정유 공정에 사용되는 탱크 종류에는 여러 가지가 존재하는데, 랭크마다 각기 다른 물질을 저장한다. 이런 특징 때문에 기존 관계형 데이터베이스를 이용한다면 저장 공간의 문제점이 발생하므로 객체지향 데이터베이스를 이용한다. 관계형 데이터베이스와의 가장 큰 차이점은 우선, 객체지향 데이터베이스이므로 OOP 개념을 데이터베이스에서 이용 가능하다. 그러한 특징으로 인하여 상속, 재 사용성, Class에 메소등 작성을 이용하여 ATOM(Advanced Tank Operation Management) 데이터베이스를 설계한다. 본 논문에서는 ATOM을 설계하고, 공정 Operator를 구축하므로서 효율적인 석유화학 공장의 탱크 운용 시스템을 구현하고자 한다.

• Proceedings of the IEEK Conference
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• 2007.07a
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• pp.201-202
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• 2007

본 논문에서는 두 대의 CCD 카메라 센서로부터 얻어진 영상을 이용하여 실시간으로 입체영상을 생성해 내고 동시에 화질 개선 작업이 실시되는 프로세서를 설계하여 입체 동영상 구현이 가능한 시스템을 완성하였다. 또한, 패럴렉스 베리어(Parallax barrier)를 설계하고 이를 Wide 7" STN(Super Twisted Nematic) LCD 패널에 적용하여 휴대가 용이한 입체영상 디스플레이 시스템을 구현하였다.

• Journal of the Korean Society of Safety
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• v.20 no.3 s.71
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• pp.19-26
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• 2005

There are three reasoning method in fault diagnosis process. The shallow reasoning is based on the experiential knowledge and deep reasoning is based on physical model. Hybrid reasoning is mixing two type reasoning. This study describes about fault train embodiment of screw type air compressor that is used widely in industrial facilities by using various experimental method and shallow reasoning. We investigate macroscopic failure cause of air compressor through naked eye observation and then microscopic failure cause by various experimental method. We composed fault train with fault knowledge based on empirical data and scientific data that is acquired through several experiments. It is possible to analysis system reliability and failure rate with these fault train.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.14 no.6
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• pp.14-20
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• 2015

A high-speed reduction transfer case is usually employed by an excavator, wheel loader, or bulldozer. When powerful torque is required in the case of climbing steep roads or towing heavy equipment, the high-speed reduction mode of the gearbox is used. Generally, a transfer case using a spur gear type with a speed reduction system has a speed reduction ratio of 1 to 1 or 2 to 1. However, the structure of a transfer case achieved at a high speed of 1 to 1 and a low speed of 4.5 or under 5.5 to 1 with the speed reduction by use of a planetary gear type with a speed reduction system was proposed in this study. By employing a planetary gear type with a speed reduction system, the compact structure of the transfer case was achieved, and the impact or the partial defect of gear teeth was eliminated.

• Journal of the Korea society of information convergence
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• v.1 no.1
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• pp.9-16
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• 2008

This research analyzes the weaknesses of domestic spectacle industry and applies RFID, which is a wireless-based automated sensering technology, as an alternative scheme. As a first step to explain RFID and apply it to spectacle industry, it presents the middleware that will process compiled information, sensering items along with suitable tags for them, and through inventory controlling and GPS service, it's goal is to achieve an embodiment of integrated system for spectacle industry by maximizing work efficiency.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.7 no.1
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• pp.57-62
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• 2006

This treatise proposes a develop system that manufactures 3D clothes model who is used in 3D clothes getting dressed simulation. Need 3D human body model and 3D clothes model to do getting dressed simulation. Create priority work Matrix javelin to design clothes model and design 2D piece from designer Connect designed piece plain using backstitch line and create numerical value data because using designed piece and backstitch data finally and make 3D clothes model. Consist of piece design module, to read clothes data and save module, getting dressed simulation module in system that propose in this treatise.

• Journal of Information Technology Services
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• v.8 no.1
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• pp.143-163
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• 2009

The study investigates the challenge of knowledge maintenance in the KMSs. Knowledge pieces are the embodiment of structures in an organization and need to be modified tuned to environmental change over time. Since the change of knowledge in the KMS is not made automatically, it requires user's active participation which is called maintenance action. This study shows that users are not voluntary in taking maintenance action with empirical data based upon knowledge pieces that are already established in the KMS. This article shows that the intention of maintaining KMS is negatively influenced by KM-related culture, organizational culture and the authority of knowledge piece rather than the organizational demography. An organizational culture has an influence directly upon the intention of maintaining knowledge but influence upon KM-related culture or the authority of knowledge piece, the influence indirectly related to the intention of maintaining knowledge. It can be argued that the organizational demography have only meager influence upon the intention of maintaining knowledge only by KM-related culture. This research has the implication that what factors are to be considered in maintaining knowledge pieces over time for the organization managers.

• The KIPS Transactions:PartD
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• v.13D no.3 s.106
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• pp.437-444
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• 2006

A chaos cipher system that focuses on the stream cipher system has a demerit that the longer the text is, the slower the speed of the encryption and description and the transmission and reception. On this study, we designed the cipher web mail system showing much better capabilities than the existing web mail system as the text is longer. In the embodiment of the cipher web mail system, we developed the key stream, the encryption and description of the text and the inside and outside mail viewer and so on. After the efficiency test, it was valued high in the respect of the speed of the encryption and description and the transmission and reception. And it made up for the defect of the stream cipher system. We expect that we can use it through the persistent applied study in the server system security, the file security, the security of the internet information, the protection of the e-commerce system information and other fields based on the cipher technique as the wide use cipher system that can replace the block cipher system.

• Proceedings of the KIEE Conference
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• 2007.04c
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• pp.159-161
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• 2007

$CO_2$ laser sees that is most suitable to get this effect through minimum formation damage and advantage that is root enemy of effect that happen in minimum cellular tissue depth of 0.1mm is stable living body organization or internal organs institution. Formation damage by ten can be related in formation's kind or energy density, length of evaporation time. If shorten evaporation time, surroundings cellular thermal damage 200 - because happen within 400ums laser beam in rain focus sacred ground surroundings cellular tissue without vitiation me by evaporation Poe of very small floor as is clean steam can. Application is possible to vulva cuticle cousins by a paternal aunt quantity, uterine cancer, cuticle tumor by laser system that $CO_2$ laser gets into standard in obstetrics and gynecology application. Because effect that super pulse output is ten enemies of laser if uniformity one pulse durations are short almost is decreased, most of all pulse module special quality of pulse style $CO_2$ laser for obstetrics and gynecology mode stabilization by weight very, in this research to get into short pulse duration and higher frequency density, do switching by high frequency in DC-DC Converter output DC's ripple high frequency to be changed, high frequency done current ripple amount of condenser for output filter greatly reduce can. Ripple of output approximately to Zero realization applying possible inductor realization through a special quality experiment do.