• 한국주거학회논문집
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• 제14권3호
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• pp.165-174
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• 2003

The demand for one-room system house as a new type of house will increase gradually, and residents also tend to be diversified. However, a method of planning of planning of one-room system house was limited and unified. Current floor plans of the one-room don't utilize a benefit of open plan in small areas. The purpose of this study is to propose several guidelines for the planning of one-room system houses that correspond to residents' needs in order to facilitate the benefit of open plan such as efficiency and multi-purpose use in small area. For this, a field survey was carried out as case studies, with individual interviews, questionnaires, and actual survey including taking pictures. Subjects were 50 residents who living in one-room system houses in Busan. Space usage behavior of residents, residential satisfactions, and preference attitudes on the attached service facilities were analyzed. The results were synthesized to suggest several guidelines for planning of one-room system house.

• Journal of Mechanical Science and Technology
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• 제20권7호
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• pp.941-949
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• 2006

Nonlinear behavior analysis was used to verify whether a one-way clutch is effective for reducing the torsional vibration of a paired spur gear system under periodic excitation. The dynamic responses were studied over a wide frequency range by speed sweeping to check the nonlinear behavior using numerical integration. The gear system with a one-way clutch showed typical nonlinear behavior. The oscillating component of the dynamic transmission error was reduced over the entire frequency range compared to a system without a one-way clutch. The one-way clutch also eliminated unsteady continuous jump phenomena over multiple solution bands, and prevented double-side contact, even with very small backlash. Installing a one-way clutch on both sides of the gear system was more effective at mitigating the negative effects of external periodic excitation and various parameter changes than a conventional gear system without a one-way clutch.

• 한국산학기술학회논문지
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• 제5권2호
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• pp.108-113
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• 2004

웹 기반 시스템의 고객 만족도를 증가시키기 위한 다양한 연구가 활발히 진행되고 있다. 또한 근래에는 고객 관점에서 서비스를 지원하는 일대일 마켓팅에 대한 관심이 높아졌으며, 웹 기반 시스템에서도 일대일 마켓팅을 지원하기 위한 연구가 필요하다. 본 논문에서는 일대일 마켓팅을 지원하는 지능형 고객 특화 모듈을 설계하였다. 제안 시스템은 일대일 마켓팅을 지원하기 위해 타겟 셀링, 크로스 셀링, 업 셀링과 같은 데이터 마이닝 기법을 사용하였다. 또한 이러한 고객 특화 모듈의 마이닝 결과를 프로토타입에 직접 적용하여 제안 시스템이 실제 웹 기반 시스템에 적용가능함을 보였다.

• 대한소아치과학회지
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• 제30권2호
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• pp.263-271
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• 2003

본 연구는 All-In-One system의 적용 시간과 도포횟수에 따라 유치 상아질과 복합레진의 접착 강도와 혼성층에 어떤 영향을 미치는지를 규명하고자 Single bonding agent(Scotchbond Multi-Purpose Plus, 3M, USA)와 All-In-One system(Prompt-L pop, 3M ESPE, USA)를 사용하였고 수복용 레진으로 복합레진(Z-250, 3M, USA)를 사용한 결과 다음과 같은 결과를 얻을 수 있었다. 1. 전단 결합 강도는 Single bonding agent를 적용한 경우 All-In-One system을 적용한 군보다 유의하게 높게 나타났다(P<0.05). 2. Prompt L-pop을 2회, 3회 적용한 경우에 전단 결합 강도는 1회 적용한 군보다 유의하게 높게 나타났으며(P<0.05), 혼성층의 두께는 1회 적용군보다 2회, 3회 적용한 군에서 증가하였다. 3. Prompt L-pop을 15초 적용한 경우에 전단 결합 강도는 7초 적용한 군보다 유의하게 높게 나타났으며(P<0.05), 30초 적용군과는 차이가 없었다. 혼성층의 두께는 7초 적용군이 가장 얇고, 15초군과 30초군에서는 차이가 없었다. 4. Single bonding agent를 이용한 경우 두터운 $2-4{\mu}m$의 혼성층이 관찰된 반면, All-In-One bonding system(Prompt L-pop, 3M ESPE, USA)에서는 비교적 얇은 혼성층($1-2{\mu}m$)이 형성되었다.

• 대한산업공학회지
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• 제42권1호
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• pp.20-29
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• 2016

This paper considers one-shot systems such as missiles, air bags of automobiles that are stored for a long time and are used at most once. One shot systems are inspected periodically to detect system failures and repair the system because we do not know whether the system will work or not on demand. Thus, we can keep high availability of the system by periodic inspection. Martinez (1984) obtained the system reliability approximately. In this paper, we obtain the exact system reliability under periodic inspection. Finally, we compare the system reliability from our formula with one of Martinez (1984) by numerical examples.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 II
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• pp.1177-1180
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• 2003

Recently, SystemC is one among the language observed. In Industry, there are many the languages that use Verilog. But, unskillful SystemC users must learn SystemC for conversion that from Verilog to SystemC and need time and effort for this. By these reason, feel necessity of easy and efficient conversion. This paper argues efficient methodology to change Verilog to SystemC. Abstract concepts of Verilog are proposed fittingly each one by one in SystemC.

• 한국전자파학회:학술대회논문집
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• 한국전자파학회 2003년도 종합학술발표회 논문집 Vol.13 No.1
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• pp.398-402
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• 2003

In this paper, we have analyzed the performance enhancement of OFDM/QPSK-DMR(Orthogonal Frequency Division Multiplexing/Quadrature Phase Shift Keying Modulation-Digital Microwave Radio)system using BL-PSF(Band Limited-Pulse Shaping Filter) over the microwave channel. For performance enhancement, we apply the one-tap adaptive equalizer for OFDM/QPSK-DMR system and compare with the BER performance of single carrier DMR system. Computer simulations confirm that the OFDM/QPSK-DMR system using one-tap adaptive equalizer has the same BER performance for the single carrier DMR system.

• 설비공학논문집
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• 제18권7호
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• pp.571-577
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• 2006

The characteristics of ice packing factor (IPF) at the ice slurry system using one line type are compared with the system using two lines type. The installation space for one transporting line is saved at the one line system. For the one line type, the ice packing factor is reduced along the downstream, but for the two lines type, the ice packing factor is fixed. For the one line system, mass flow rate in the main line is fixed along the down-stream, but for two lines system, the mass flow rate in the main line is reduced along the downstream. For one line system, along the down stream after IPF=0, the temperature at the main steam is increased, and the extracted mass flow is increased. The initial IPF, at which the IPF is not arrived at zero upto the final node, is proposed for the B area.

• 예술인문사회 융합 멀티미디어 논문지
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• 제6권3호
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• pp.41-49
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• 2016

본 논문에서는 현재 전 세계적으로 많은 관심이 집중되어있고, 많은 연구와 개발이 진행되고 있는 사물인터넷 시스템을 개발하였는데, 다양한 표준화 단체들 중에서 가장 많은 연구가 진행된 oneM2M 통신 프로토콜을 사용하였다. oneM2M 통신 프로토콜을 기반으로 하는 본 연구의 사물인터넷 시스템은 크게 ADN-AE 모듈과 CSE 모듈로 나눌 수 있다. AE 모듈은 다양한 서비스의 어플리케이션을 제공하거나 CSE를 관리할 수도 있다. CSE 모듈은 사물인터넷의 다양한 AE들에게 공통적으로 제공해야하는 서비스 기능들로 이루어진 플랫폼이다. CSE 모듈은 Network Manager, Message Handler, Resource Manager 모듈 등으로 구성된다. Network Manager 모듈은 oneM2M 기반 통신의 전반적인 관리와 시스템 전체의 흐름을 관장한다. Message Handler 모듈은 송수신한 모든 메시지들의 관리 및 분석을 담당하고, Resource Manager 모듈은 리소스 트리에 관한 모든 관리를 담당하도록 하였다. 리소스 트리는 관리되어야 할 오브젝트에 관한 정보를 저장한다. 각 모듈에서의 자료 흐름 및 프로토콜 매핑 등에 관해서도 설명하였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1988년도 한국자동제어학술회의논문집(국내학술편); 한국전력공사연수원, 서울; 21-22 Oct. 1988
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• pp.457-461
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• 1988

In this study an one-board micom controlled precision temperature control system has been developed. The digital temperature control system is consisted of an one-board micom as digital controller, a 12-bit A/D and D/A converter, a power amplifier, a NTC thermister, a preamplfier and a heat chamber. An operating control program for the control system was written in Z80 machine language. A Dual-PID predictor control algorithm was proposed. Experments were conducted with different sampling time and limitted error value. As a result, the temperature in a heat chamber can be well controlled within +- 0.2 .deg.C when the sampling time was applied to 10 sec and the limitted error value +- 0.5 .deg.C under the dual-PID predictor control algorithm. By means of one-board micom overall system has been reduced in size and volume, thus the system becomes compact and less expensive.