• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.273-274
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• 2008

According to current RRC procedures, network does not know either how long it will take the RRC reconfiguration message (such as Physical Channel Reconfiguration (PCR)/Transport Channel Reconfiguration (TCR)/Radio Bearer Reconfiguration (RBR)) to be transmitted over the source cell or how long the UE will take to reconfigure on receiving the message, it has to assume the worst-case. Thus, it typically indicates a conservative activation time, leading to potentially large interruption for voice traffic, particularly if the source cell signal strength has degraded. This proposals allow the UE to receive the serving cell related information (carried today in PCR/RBR/TCR message) in an Active Set Update message.

• 대한전자공학회논문지
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• 제26권6호
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• pp.124-130
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• 1989

ITIC를 중심으로 고밀도 DRAM을 위한 획기적인 밀도 향상을 기할 수 있는 공정과정과 회로디자인의 기술 혁신에 대하여 지다이너 입장에서 논의하였다. 여기서 개발한 TETC라 부르는 DRAM은 trench 기술과 SEG기술을 이용하였는데 $n^+-polysilycon$인 storage 전극과 $n^+-source$ 전극이 self-con-tact되고 soft error 를 극복할 만큼 충분히 큰 정전용량을 갖으므로 절연 영역을 따라서 만든 수직의 캐패시터를 이용함으로써 셀 크기를 기존의 BSE cell구조에 비하여 약 30% 감소되었다.

• Journal of Advanced Marine Engineering and Technology
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• 제15권3호
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• pp.31-38
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• 1991

Due to the structural complexity and the mutual interference of "water columns", the estimations of absorption power for a large wave energy conversion devices of flosting type in ocean could not achieve the desired results. Thus, in this paper the authors will propose a new methodology based on the three dimensional source ditribution method. We distributed the source to the device and the thin & light plate in "water column", And from the behaviour of this plated, the power and the pressure in water column are calculated. But, yet method should be proved to be valid by experiment.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 춘계학술대회 논문집
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• pp.256-259
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• 2003

This paper proposes OPTICAL MARKER fer registering process - one of the 3D measurement process : scan registering - merging - measurement. If the registering work is carried out manually, it can be accompanied with much time and many errors. Because the patterned marker make registering process automatic, many firms use it now. But the physical shape of existing markers is the source of the data loss caused by hiding surface, and the marker arrangement is the source of the time loss. The optical marker proposed in this paper has marker generator, organized a large number of binary coded control laser diode, separate from 3D scan object. So, it does not take much time for the marker disposition, and it is not the origin of the data loss, and the binary coded laser information make the auto-registering possible.

• 대한음성학회지:말소리
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• 제53호
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• pp.157-169
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• 2005

This paper proposes an efficiently representing method of spatial cues on multichannel spatial audio coding. The Binaural Cue Coding (BCC) method introduced recently represents multichannel audio signals by means of Inter Channel Level Difference (ICLD) or Source Index (SI). We tried to express more efficiently ICLD and SI information based on Inter Channel Correlation in this paper. We adopt different spatial cues according to ICC and propose a compensation method of empty spectrums created by using SI. We performed a MOS test and measuring spectral distortion. The results show that the proposed method can reduce the bitrate of side information without large degradation of the audio quality.

• 대한전자공학회논문지SD
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• 제48권10호
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• pp.33-38
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• 2011

본 논문에서는 로컬에서의 동기화를 위한 새로운 저 전력 동기화 기술을 제안하였다. 본 논문에서 제안하고 있는 저 전력 동기화 기술은 현재 널리 이용되고 있는 소스 동기화 방법과 비교하여 클록을 전송하는 대신 인에이블 신호를 전송하여 동기화를 함으로써 소스 동기화 방법의 장점과 데이터 전송속도는 그대로 유지하면서 동기화를 위한 회로와 배선에서 소모되는 전력을 50%이상 감소시킨다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1170-1171
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• 2008

Microsources supply high quality power from 1kW to a matter of MW with higher reliability and energy efficiency than the existing large power facilities. In this paper, we designed dynamic modeling of Microturbine and Fuel cell being worthy as a small distributed energy source. Using EMTP we designed the dynamic modeling and confirmed characteristics of steady-state and dynamic analysis. In this paper, we designed dynamic modeling of Microturbine and Fuel cell being worthy as a small distributed energy source and analyzed dynamic characteristics corresponding to load variation.

• 대한가정학회지
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• 제37권2호
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• pp.13-26
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• 1999

The purpose of this research is to find out consumer attitudes toward and needs for housing information sources and contents so as to facilitate the development and utilizing the information. The stratified sampling method was used to select 1,300 households in six large cities plus Seoul area during September 10th to 30th, 1997. The resets showed that Newspaper was the main source of housing information and about an half of respondents experienced housing consultation were somewhat dissatisfied with their consultants, mostly realtors. The younger and the more highly educated with higher income residents of apartments in Seoul area had the higher needs for housing information. Experience itself used housing information source had position influence on housing needs. The various housing information may increase the chance to use the information of those had never used it as well as to meet the needs for housing information of those had used.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집B
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• pp.322-327
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• 2000

Natural convection heat transfer in an enclosure with an opening in the right vertical wall and a heat source at the bottom surface is investigated using a holographic interferometric technique. The effects of the opening length, divider length attached to the top wall, and heater temperature on the temperature distribution are examined. The openging length as well as the divider length greatly affects the degree of inflow and outflow of air. With a small opening, the opening doesn't affect much the upward warm air flow resulting in the symmetric temperature distribution. On the other hand, with the increase of the opening length, the inward cold flow moves the upward flow to the left direction. With the increase of the divider length, temperature in the lower region of enclosure becomes higher for the small opening and lower for the large opening.

• Applied Science and Convergence Technology
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• 제26권5호
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• pp.129-132
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• 2017

We report a chemical vapor deposition approach and optimized growth condition to the synthesis of single layer molybdenum disulfide ($MoS_2$). Obtaining large grain size with continuous $MoS_2$ atomically thin films is highly responsible to the growth distance between molybdenum trioxide source and receiving silicon substrate. Experimental results indicate that triangular shape $MoS_2$ grain size could be enlarged up to > 80um with the precisely controlled the source-to-substrate distance under 7.5 mm. Furthermore, we demonstrate fabrication of a memory device by employing poly(methyl methacrylate) (PMMA) as insulating layer. The fabricated devices have a PMMA-$MoS_2$/metal configuration and exhibit a bistable resistance switching behavior with high/low-current ratio around $10^3$.