• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2008년도 학술대회 2부
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• pp.456-459
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• 2008

현재는 CE 와 PC 를 중심으로 한 디지털 컨버전스의 시대이지만, 그에 반대급부로 많은 제품군의 다양화가 동시에 이루어지고 있다. 각 제품들은 독립적으로 기능을 수행하고 있지만, 유비쿼터스, 홈 네트워크의 개념이 부각되며 모든 제품들은 추후 네트워크상에 연결되게 될 것이며, 기기와 기기간의 연결을 통한 사용에 대한 시장의 요구가 지배적으로 부각될 것이다. 이러한 추세로 볼 때, 제품의 다양화는 결국 수 많은 경우의 수를 가지는 연결형태를 낳을 수 밖에 없으며 제품의 다양화에 따른 수 많은 연결형태에 대한 정의와 제어구조가 필요하다. 이에 더불어 다양한 제품들을 네트워크 상에서 유기적으로 연결하여 사용할 수 있는 다양한 디자인 방법론이 제시되어 왔지만, 실제 사용자의 사용행태 및 각 기기가 가지고 있는 기능적인 특정을 반영하는 기준이 정립되어 있지 않은 경우가 많다. 본 논문에서는 이러한 많은 경우의 수의 연결형태를 구분하고, 제어구조를 확립하기 위한 기기간 연결성디자인방법론을 제시하고 있다. 연결성디자인 가이드라인은 폭 넓은 기기간 연결을 제공하여야 하며, 여러 기기간의 동시제어(3-box 모델)에 대한 고려도 있어야 한다. 연결성디자인의 가이드라인을 제시하기 위해 우리는 사용자의 제품경험단계를 연결, 설정, 사용, 해제의 4 단계로 나눔으로써 수 많은 경우의 수의 연결형태의 구분에 대한 초기적인 정의를 하였다. 이러한 초기적인 정의를 바탕으로, 세부적인 연결형태의 구분을 위해 본 논문에서는 각 사용자 경험단계별 연결형태의 기준을 제시한다.

• JSTS:Journal of Semiconductor Technology and Science
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• 제15권3호
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• pp.365-373
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• 2015

We propose a simple and compact thyristor-based neuron circuit. The thyristor exhibits bi-stable characteristics that can mimic the action potential of the biological neuron, when it is switched between its OFF-state and ON-state with the help of assist circuit. In addition, a method of inter-neuron connection with synaptic devices is proposed, using double current mirror circuit. The circuit utilizes both short-term and long-term plasticity of the synaptic devices by flowing current through them and transferring it to the post-synaptic neuron. The double current mirror circuit is capable of shielding the pre-synaptic neuron from the post synaptic-neuron while transferring the signal through it, maintaining the synaptic conductance unaffected by the change in the input voltage of the post-synaptic neuron.

• 한국유기농업학회지
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• 제4권1호
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• pp.59-73
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• 1995

Some devices of sustaining the small scale farming in the changing social and economic conditions in which comparative disadvantages are evidently to be experienced in the near future, are becoming a central proposition in the Korean agriculture. In this connection, development of integrated activities in farming among individual farmers within a region may be an important device of overcoming prevailing limits of resource possession and use of individual farmers. These inter-farm or inter-group cooperation and integration can be promoted through establishing efficient cooperative system within a farming district. This study was undertaken to find facts pertaining to situations leading to successful performence of cooperative systems in group farming. In this study, The case in Cheunee Myun, Yungi-Gun, Chungchungnam-Do in which farming is specialized in production of so called "organic farming products" and farmers are integrated for increasing their productivity.ductivity.

• 한국안전학회지
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• 제32권6호
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• pp.81-88
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• 2017

This study deals with the optimal design of a hybrid control system composed of a combination of active control system and passive control system for effective seismic performance improvement of two adjacent structures. The proposed hybrid control system adopts a configuration of installing an active control device in one building and connecting two adjacent structures with a passive control device so that the one-side active control force can be bi-directionally applied to both buildings through the passive connecting devices. In order to derive the optimal performance of the proposed system, the design parameters of the passive and active control systems were searched using the genetic algorithm. Numerical simulations of 10-story and 8-story buildings have been performed to verify the effectiveness of the proposed technique. For the purpose of comparison, the conventional independent control system with two identical active control systems being installed separately for each structure was also optimally designed and its seismic response has been evaluated as well. From the comparative results of the two control systems, it is demonstrated that the proposed hybrid control system requires larger control force for its one-side active control device than the conventional independent control system does for each of both-side active devices, but quite less than the total control force required for both-side devices of the independent control system, while maintaining similar seismic performance. Therefore, the proposed system is more economical and reliable than the conventional independent control system with two identical active devices.

• 한국전자통신학회논문지
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• 제10권8호
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• pp.875-882
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• 2015

최근 국내 도시철도 신설 및 개량사업에 무선통신기반 열차제어시스템 도입이 적극 검토되고 있다. 그러나 여러 가지 이유로 일부구간 또는 차량기지를 기존 궤도회로 기반으로 구축하는 경우가 있어 이종(CBTC, ATC) 열차제어시스템 간 상호운행이 필요하다. 따라서 본 논문에서는 신분당선 무선통신기반(CBTC) 차상신호장치를 탑제한 열차가 분당선 궤도회로(ATC)구간을 상호운행하기 위한 차상신호장치 설계와 두 노선을 탈선분기기 없이 안전하게 연결하는 방안을 제시한다.

• 대한전자공학회논문지TC
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• 제40권11호
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• pp.27-33
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• 2003

데이터 감시(AUDIT) 기능이란 분산 실장 되어 있는 데이터들을 대상으로 데이터 이상을 진단하고 불일치 데이터를 검출하여 이를 일치시키는 일련의 작업을 말하는 것으로 데이터 불일치로 인해 유발되는 시스템 문제를 최소화시키는데 목적을 둔다. 본 논문에서는 ATM 교환기의 연결 데이터의 대부분을 차지하고 있는 PVC(Permanent Virtual Circuit) 데이터에 대한 감사 기능 지원 방안을 제안하였다. 즉 고속/저속 가입자 링크에 대해 일정 시간마다 감사 기능의 주기적 수행과 운용자 명령어에 의한 즉각적인 감사 기능을 제안하여 PVC 정보의 불일치로 인한 데이터의 손실 및 시스템 장애를 최소화 할 수 있게 하였다. 또한 감사 기능으로 인해 연결 제어 프로세서와 DC(Device Controller) 사이에 송수신하는 많은 IPC(Inter Processor Communication) 메시지가 연결 제어 프로세서의 부하에 어떠한 영향을 미치는지 분석하였는데, 시스템 부하와 거의 무관하게 연결 제어 프로세서의 부하가 일정함을 확인하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1991년도 하계학술대회 논문집
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• pp.86-89
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• 1991

In recent years, Vacuum Circuit Breaker(VCB) has been widely used to enhance the confidence and at the same time to ease maintenance of waterworks requipment as the power supply breaker of high voltage motor. When making and breaking the sources as VCB the powerful surge voltage, repetitive reignition phenomenon resulted from exceeding inter-pole endurance voltage of CB, has occured. It has transmitted to the winding of motor stator through the cable, and this surge voltage is repeated over and over again before finishing making and breaking action of CB according to cumulation of repetitive reignition surge, motor has become burned in the end. This paper describes surge voltage occuring in making and breaking of VCB as circuit parameters by transient phenonenon and examines closely the variance of peak values, wavefront-length, wavetail-length, when changing inductance and capacitance of a cable. Finally we will expect to protect motor winding breakdown from surge voltage through parallel connection of suitable-size in the motor.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2008년도 추계학술발표대회 논문집
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• pp.53-56
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• 2008

A photovoltaic panel is a device that, through the photovoltaic effect, converts luminous energy into electric energy. Photovoltaic generation system used infinity of solar energy, cost of fuel is needless and there in no air pollution or waste occurrence. This paper summarizes the results of these efforts by offering a photovoltaic system structure in 30[kW] large scale applications installed in Mokpo National University dormitory roof. The status of photovoltaic system components, are inter-connection and safety equipment monitoring system will be summarized as this article. This describes configuration of utility interactive photovoltaic system which generated power supply for dormitory. In this paper represent 30[kW] utility photovoltaic system examination result.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1126-1127
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• 2008

A photovoltaic panel is a device that, through the photovoltaic effect, converts luminous energy into electric energy. Photovoltaic generation system used infinity of solar energy, cost of fuel is needless and there in no air pollution or waste occurrence. This paper summarizes the results of these efforts by offering a photovoltaic system structure in 30[kW] large scale applications installed in Mokpo National University dormitory roof. The status of photovoltaic system components, are inter-connection and safety equipment monitoring system will be summarized as this article. This describes configuration of utility interactive photovoltaic system which generated power supply for dormitory. In this paper represent 30[kW] utility photovoltaic system examination result.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2005년도 전력전자학술대회 논문집
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• pp.720-722
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• 2005

A photovoltaic panel is a device that, through the photovoltaic effect, converts luminous energy into electric energy. Photovoltaic generation system uses infinity of solar energy, cost of fuel is needless and there is no all pollution or waste occurrence. This paper summarizes the results of these efforts by offering a photovoltaic system structure in 50kW large scale applications installed In Chosun University dormitory roof. The status of PV system components, are inter-connection and safety equipment monitoring system will be summarized as this article. This describes configuration of utility interactive photovoltaic system which generated power supply for dormitory In this paper represent 50kw utility PV system examination result