• Animal Systematics, Evolution and Diversity
• /
• v.29 no.2
• /
• pp.184-187
• /
• 2013

Korean species of the genus Elampus Spinola is taxonomically reviewed. Korean fauna of the genus Elampus was known by one sepcies, Elampus bidens (F$\ddot{o}$rster). This study reports new discover of another Korean species E. musashinus (Tsuneki). This species was described based on male, and the female has been still unknown. With comparison of partial mitochondrial cytochrome c oxidase I gene sequences, the sex-association of this species is established, the Korean specimens of both sexes completely identical in their sequences targeted. Herein the female description of E. musashinus is presented for the first time. A key to the Korean species, as well as diagnosis and digital images are provided.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2002.10a
• /
• pp.675-678
• /
• 2002

A controller was designed generally using C or assembly languages on high-speed design controller. But, in this paper, DC servo controller is designed using the cord of the block-diagram of SIMTool. By the method, we can design, realized and analyzed a control system quickly in real-time. And we expect that the various plants of a robot vehicles are controled through the outside I/O board changing the structure of the block-diagram of SIMTool into AUTOTool. In addition, our developed system helps the most suitable automatic controller design and tester with hight-speed.

• 한국디지털정책학회:학술대회논문집
• /
• 2005.11a
• /
• pp.491-498
• /
• 2005

기능점수 방법은 소프트웨어 비용산정을 위한 규모산정에서 많이 이용되고 있다. 그러나 게임콘텐츠에서는 이를 이용하지 못하고 있다. ISO/IEC FDIS 19761(final draft)[8]에서는 게임콘텐츠에서 FP를 이용하지 말 것을 권고하고 있다. 이에 게임요소점수방식을 고안하였으나, 이 방식에서 쓰이는 게임요소의 가중치가 분명치 않은 부분이 있어 여기서 이 부분을 다루어 그 내용을 명확히 하였다. 게임요소에 대한 정의를 하여보고, 이중 그 의미가 불명확한 미션에 대하여 다소 세부적으로 다루었으며, 이들 게임요소의 가중치를 산정할 난이도에 대하여 검토한다. 난이도는 규모산정의 중요요소이므로 게임요소에 대한 명확한 난이도의 구분이 필요하다.

• 한국IT서비스학회:학술대회논문집
• /
• 2009.11a
• /
• pp.531-536
• /
• 2009

원전 디지털 계측제어계통 통신망에서는 일반 산업체의 사이버보안과는 달리 안전성과 가용성, 그리고 경성실시간 조건을 매우 중시하면서도 일반 IT 분야에서 사용하고 있는 사이버보안 기술의 대부분을 수용할 것을 요구받고 있다. 사이버보안 활동은 원전 디지털 계측제어계통 통신망에서 요구하는 통신망의 성능 조건을 저해하지 않아야만 하는데, 이러한 요구 조건들은 서로 상충되는 측면들이 있다. 원전 디지털 계측제어계통 사이버보안을 위한 보안기술들이 계측제어시스템 및 이와 관련된 통신망에 적용될수록 이들의 성능은 저하될 수밖에 없기 때문이다. 사이버보안에 대한 위협이 일반 산업계는 물론 국가 핵심 기반 시설까지 확대되고 있는 현실에서 안전성이 가장 우선시되는 원전의 핵심 제어계통인 원전 디지털 계측제어계통에 대한 사이버보안 활동은 매우 주요하다. 본 논문에서는 원전 디지털 계측제어계통 사이버보안에 활동 수행에 필요한 고려사항들에 대하여 기술한다.

• Electronics and Telecommunications Trends
• /
• v.32 no.6
• /
• pp.27-39
• /
• 2017

A variety of medical devices are utilized to repair or help injured body functions after accidental injury(such as a traffic accident), population aging, or disease. Such medical devices are being actively researched and developed in portable form, skin patchable type, and further, implantable form. In the future, active implantable medical devices for neuro and brain sciences are expected to be developed. Active implantable medical devices that detect brain signals and control neurology for a wider understanding of human cognition and nerve functions, and for an understanding and treatment of various diseases, are being actively pursued for future use. In this paper, the core elements of implantable devices that can be applied to neuro and brain sciences are classified into electrode technologies for bio-signal acquisition and stimulation, analog/digital circuit technologies for signal processing, human body communication technologies, wireless power transmission technologies for continuous device use, and device integration technologies to integrate them. In each chapter, the latest technology development trends for each detailed technology field are reviewed.

• Proceedings of the KIEE Conference
• /
• 2000.07d
• /
• pp.2678-2680
• /
• 2000

In this paper, we calculates mathematical model of ex-core neutron flux monitoring system for nuclear reactor and design the digital system using the bilinear transformations. The output pulse shape and resolving time of the system determines from the proposed method.

• Proceedings of the KIEE Conference
• /
• summer
• /
• pp.1373-1375
• /
• 2004

This paper presents the design of DC protection Relay for Light Rail Transit system, which is very beginning product in domestic. Protection Function characteristic, principle and I/O interface including interlock signal has been introduced. The protection algorithm and EMC characteristics have been certified by official organization and Type test report has been introduced. Up to date in domestic, the test procedure for DC Protection relay hasn't been established so the new method and test equipment based on IEC regulations are proposed. Finally the product will be proved based on field test.

• Proceedings of the KIEE Conference
• /
• 1996.07b
• /
• pp.850-852
• /
• 1996

High impedance fault (HIF) is defined as fault that general overcurrent relay can't detect or interrupt, Especially when HIF occur under 15 kV, energized high voltage conductor results in fire hazard, equipment damage or personal threat. Because most HIF occur arc, HIF detection using arc is to increase. Numerical arc model can be applied in an electromagnetic transients program (EMTP) to reproduce the dynamic and random characteristic of arcs for any insulator arrangement, current and system voltage. It allows the representation of any network configuration to be investigated, so the digital simulation of arc faults through air can be substitute for demanding power arc test.

• Proceedings of the KIEE Conference
• /
• 2003.07b
• /
• pp.861-863
• /
• 2003

In this paper, a controller for a non-contact bearing-based motor-generator system is designed. The levitation control method is a digital PID control. The plant dynamics consisting of actuator and rigid rotor dynamics are described. And some experiments are conducted with each global control and local control concept. From the whirl test, the Motor-Generator System can be controlled within about ${\pm}10{\mu}m$ gap variation at the rotational speed of 600rpm and generate electric power of AC100V.

• Proceedings of the KIEE Conference
• /
• 2003.07b
• /
• pp.864-866
• /
• 2003

In this paper, the improvement of control performance for a magnetic levitation system is presented. The model of a single-magnet system with rail is derived. As a conventional controller, PID controller is designed and implemented. This controller has a narrow stability margin due to low-order controller structure so that it cause unstability for a flexible rail. So to improve the control performance and stability margin, a robust controller as a new controller is designed and implemented using a VME-based digital controller. As a result, the controller performance of the new designed controller is better than that of the conventional controller.