• Journal of Dairy Science and Biotechnology
• /
• v.34 no.1
• /
• pp.43-49
• /
• 2016

Emulsion PCR (ePCR) has recently gained interest in the areas of food safety and biotechnology owing to its highly specific and sensitive performance in the amplification of target DNA. To facilitate the applications of ePCR to food safety and biotechnology, this paper describes the principles of ePCR and the factors that should be considered in designing ePCR. In addition, current research and applications related to ePCR are discussed.

• Computational Structural Engineering
• /
• v.28 no.4
• /
• pp.21-24
• /
• 2015

SIMULIA Tosca Structure를 이용한 열변형력 최적화는 개발 과정에서 터보차저를 한층 더 개선하는데 결정적인 역할을 합니다. 열변형력 최적화는 일단 민감도 연구를 통해 터보차저의 뚜렷한 상보적 효과를 파악하여 긍정적 영향을 활용하고 부정적 영향을 해소하는데 유용합니다. 그리고 나서 이와 같이 전역으로 최적화된 형상을 토대로 국부적 형상 최적화를 실시하여 개선의 여지가 남아 있는 부위를 세부적으로 개선할 수 있습니다. 이와 같이 더욱 효율적인 개발 과정을 통해 성능과 수명이 향상된 배기용 터보차저를 개발할 수 있습니다. 게다가 시뮬레이션 및 최적화 기술을 지속적으로 활용하면 시험과 초기 비용을 절약할 수 있습니다.

• Proceeding of EDISON Challenge
• /
• 2013.04a
• /
• pp.217-220
• /
• 2013

기존 플래시 메모리의 물리적 한계를 극복하여 저전압, 저전력 비휘발성 메모리 소자를 얻기 위해서는 터널링 장벽 제어가 필수적이며, 저유전체와 고유전체를 적층한 VARIOT 구조는 터널링 장벽 제어에 매우 효과적이다. 우리는 비평형 그린함수 방법을 이용하여 전자 수송을 계산함으로써, VARIOT 구조가 기존의 단일 유전층 구조에 비해 비휘발성 메모리 관점에서 얼마나 향상되었는지를 분석하고, 터널링 장벽 제어에 있어 고유전체가 가져야 할 가장 유리한 조건을 찾아내었다. 또한 유효질량이 에너지 장벽(유전층)의 전계 민감도와 거의 무관함을 보임으로서 시뮬레이션 결과가 합리적임을 증명하였다.

• The Journal of the Acoustical Society of Korea
• /
• v.19 no.8
• /
• pp.3-11
• /
• 2000

This paper considers the performance of a dynamic priority control function (DPCF) of a threshold-based Bernoulli priority jump (TBPJ) scheme. Loss-sensitive and delay-sensitive traffics are applied to a system with a TBPJ scheme that is a general state-dependent Bernoulli scheduling scheme. Loss-sensitive and delay-sensitive traffics represent sound and data, respectively. Under the TBPJ scheme, the first packet of the loss-sensitive traffic buffer goes into the delay-sensitive traffic buffer with Bernoulli probability p according to system states which represent the buffer thresholds and the number of packets waiting for scheduling. Performance analysis shows that TBPJ scheme obtains large performance build-up for the delay-sensitive traffic without performance degradation for the loss-sensitive traffic. TBPJ scheme shows also better performance than that of HOL scheme.

• Journal of the Computational Structural Engineering Institute of Korea
• /
• v.15 no.1
• /
• pp.127-136
• /
• 2002

This papers presents a practical damage detection algorithm based on damage index method that accurately assesses both the location and severity of the localized detriment in a bridge structure using only limited mode shapes. In the algorithm, the ratio of the modal vector sensitivity of an undamaged structure to that of a damaged structure is used as an indicator of damage. However, a difficulty arises when the damaged element is located at a node of mode where the amplitude of medal vector is close to zero, leading the singularity of the ratio (i.e., division-by-zero). This singularity problem is overcome by introducing a parameter denoted a sensitivity filter, a function of mode shape of the structure, in modal vector sensitivity. Using this concept, an improvement can be considerably achieved in the estimation of both degree of severity and location of damage. To verify the proposed algorithm, its numerical implementations are conducted for a simply supported beam and a 2-span continuous beam.

• Journal of the Institute of Electronics Engineers of Korea SD
• /
• v.48 no.9
• /
• pp.13-21
• /
• 2011

In this paper, the CMOS programmable interface circuit for MEMS gyroscope is presented, and evaluated with the MEMS sensing element. The circuit includes the front-end charge amplifier with 10 bit programmable capacitor arrays, 9 bit DAC for accurate offset calibration, and 10 bit PGA for accurate gain calibration. The self oscillation loop with automatic gain control operates properly. The offset error and gain error after calibration are measured to be 0.36 %FSO and 0.19 %FSO, respectively. The noise equivalent resolution and bias instability are measured to be 0.016 deg/sec and 0.012 deg/sec, respectively. The calibration capability of this circuit can reduce the variations of the output offset and gain, and this can enhance the manufacturability and can improve the yield.

• Korean Journal of Optics and Photonics
• /
• v.32 no.3
• /
• pp.126-132
• /
• 2021

In this research, we have investigated the sensitivity of an extraordinary optical transmission sensor depending on the angle of incident light. Three types of light, including a collimated beam and focused beams (4× and 10×), were designed for the sensor system. To compare the sensitivity of the sensor, we measured transmittance spectra using deionized water (n=1.333) and refractive-index-matching oils (n=1.360 and 1.380). Those spectra were analyzed in terms of redshifting of the peak, so that we could determine the sensitivity. The sensitivity tended to increase when the collimated beam is used on the system, and we have concluded that the sensitivity could be affected by the incidence angle on an extraordinary optical transmission sensor.

• Communications for Statistical Applications and Methods
• /
• v.17 no.4
• /
• pp.561-574
• /
• 2010

We studied the performance of 8 data mining algorithms including decision trees, logistic regression, LDA, QDA, Neral network, and SVM and their combinations of 2 ensemble techniques, bagging and boosting. In this study, we utilized 13 data sets with binary responses. Sensitivity, Specificity and missclassificate error were used as criteria for comparison.

• Proceedings of the KIEE Conference
• /
• 2008.10c
• /
• pp.231-233
• /
• 2008

본 논문에서는 연계점전압의 변화율과 가속이득을 이용한 향상된 수동적 인지법을 제안하였다. 기존의 수동적 인지법과 비교하여 불검출영역의 감소를 확인하였고 적정한 가속이득 값을 설정하기 위하여 단독운전 검출 소요시간과 시스템 민감도를 분석하였으며 컴퓨터 시뮬레이션을 통해 제안한 알고리즘의 타당성을 검증하였다.

• Proceedings of the Korea Contents Association Conference
• /
• 2016.05a
• /
• pp.61-62
• /
• 2016

최근 모바일 기술 향상과 모바일 디바이스 보급의 급증으로 인해 기존의 중앙 집중 처리식 시스템의 한계를 모바일 기술 등으로 보완하기 위한 연구들이 활발히 진행되고 있다. 본 논문에서는 모마일 P2P 네트워크에서 악의적인 피어 판별 기법을 제안한다. 제안하는 기법은 악의적인 피어들이 내린 평가와 다른 피어들이 내린 평가를 비교하여 임계치 밖의 평가를 내리는 피어들을 판별한다. 또한 제안하는 기법은 민감도에 따라 악의적인 피어를 판별한다. 본 논문에서는 제안하는 기법을 통해 피어들 간 정보교환의 신뢰도를 향상시킨다.