• 전력전자학회:학술대회논문집
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• 전력전자학회 2001년도 전력전자학술대회 논문집
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• pp.666-668
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• 2001

전력선통신 변조방식 중 FSK(Frequency Shift Keying) 변조방식을 이용하여 컴퓨터와 RS232 케이블로 전력선모뎀과 연결하여 컴퓨터의 데이터신호를 전력라인으로 직접 송신할 수 있게 하였으며, 수신부에서 데이터신호를 검출하여 가전기기의 전원을 ON/OFF하였다.

• Communications for Statistical Applications and Methods
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• 제12권2호
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• pp.453-462
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• 2005

We derive the influence function on t statistic and find its feature; the influence function on t statistic has two forms depending on the value of ${\mu}_0$. Sample influence functions are used to verify the validity of the derived influence function. We use random samples from normal distribution to show the validity of the function. The simulation study proves that the obtained influence function is very accurate to in estimating changes in t statistic when an observation is added or deleted.

• Communications for Statistical Applications and Methods
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• 제6권3호
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• pp.871-880
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• 1999

The main purpose of queueing theory is to find the optimal solution for maintaining systems such as service facilities. Analyzing the overfolw process provides an important information for the solution in queueing systems with finite capacity. In this thesis we approximate the expected time until the first overflow in M/G/1/K/N queueing systems. Results will be applied to approximate the expected time until the first reduction of source population system. Simulation results show that our approximation is applicable to real situations.

• 대한수의사회지
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• 제20권6호
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• pp.371-376
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• 1984

This study was conducted to determine the normal values for chemical components of blood serum were determined or normal 10 males and 10 females of Korean Native Ogolgyes, l82 days. The measured mean values, standard deviation and ranges of blood glucose,

• Bulletin of the Korean Chemical Society
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• 제7권3호
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• pp.204-210
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• 1986

It is shown that the linear stability coincides with the thermodynamic stability in the case of stress tensor evolution for simple dense fluids even if the constitutive (evolution) equation for the stress tensor is nolinear. The domain of coincidence can be defined in the space of parameters appearing in the constitutive equation and we find the domain is confined in an elliptical cone in a three-dimensional parameter space. The corresponding state theory in rheology of simple dense fluids is also further examined. The validity of the idea is strengthened by the examination.

• Journal of Microbiology and Biotechnology
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• 제9권5호
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• pp.582-588
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• 1999

A Brevibacterium lactofermentum gene coding for a glucose-specific permease of the phosphoenolpyruvate-dependent phosphotransferase system (PTS) was cloned, by complementing an Escherichia coli mutation affecting a ptsG gene with the B. lactofermentum genomic library, and completely sequenced. The gene was identified as a ptsG, which enables an E. coli transformant to transport non-metabolizable glucose analogue 2-deoxyglucose (2DG). The ptsG gene of B. lactofermentum consists of an open reading frame of 2,025 nucleotides encoding a polypeptide of 674 amino acid residues and a TAA stop codon. The 3' flanking region contains two stem-loop structures which may be involved in transcriptional termination. The deduced amino acid sequence of the B. lactofermentum enzyme $II^{GIe}$ specific to glucose ($EII^{GIe}$) has a high homology with the Corynebacterium glutamicum enzyme $II^{Man}$ specific to glucose and mannose ($EII^{Man}$), and the Brevibacterium ammoniagenes enzyme $II^{GIc}$ specific to glucose ($EII^{GIc}$). The 171-amino-acid C-terminal sequence of the $EII^{Glc}$ is also similar to the Escherichia coli enzyme $IIA^{GIc}$ specific to glucose ($IIA^{GIc}$). It is interesting that the arrangement of the structural domains, IIBCA, of the B. lactofermentum $EII^{GIc}$ protein is identical to that of EIIs specific to sucrose or $\beta$-glucoside. Several in vivo complementation studies indicated that the B. lactofermentum $EII^{Glc}$ protein could replace both $EII^{ Glc}$ and $EIIA^{Glc}$ in an E. coli ptsG mutant or crr mutant, respectively.

• Biotechnology and Bioprocess Engineering:BBE
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• 제5권2호
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• pp.123-129
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• 2000

A high cell density culture system for the anchorage dependent CHO cells was developed based on the combination of in removal of ammonium ion and microcarrier culture system, and semi-fed-batch feeding of glucose and glutamine was employed to the developed culture system. The glass bead was selected as an optimum microcarrier in terms of cell growth. An ammonium ion selective zeolite, Phillipsite-Gismondine, was packed in a dialysis menium ion. The semi-fed-batch operation was employer to the novel culture system for the high density cell culture, and the results showed the cell growth was improved by 32% and tPA productivity by 250%.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
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• pp.768-771
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• 2008

컴퓨터를 활용한 제어 기술이 발달함에 따라 무인화 시스템이 증가하고 있는 현실이다. 이 논문에서는 현재 많은 연구가 활발히 이루어지고 있는 무인화 시스템들 중의 하나인 무인 자동 주차 시스템을 위한 기법을 제안하고 시뮬레이션 실험을 통하여 그 가능성을 보였다. 제안한 자동 주차 시스템에서는 센서 정보를 입력으로 하고 퍼지 함수에 의한 추론 결과를 활용하여 조향 장치를 제어하는 방식을 제안하였다. 성능 평가를 위하여 그래픽 시뮬레이션 환경을 구축하고 제안한 기법을 이용한 가상자동차의 주차 과정을 보였으며 그 결과를 분석하였다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
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• pp.776-779
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• 2008

DNA 기술의 발달로 얻어진 대량의 유전자 정보를 손쉽게 이상 값을 가진 유전자의 정확한 분류와 진단을 할 수 있는 방법인 Microarray 기술에 대한 기대가 커지고 있다. 정확한 분류를 하기 위해서는 추출된 유전자에 들어 있는 많은 잡음 즉 이상 값을 가진 유전자만을 추출할 필요가 있다. 따라서 본 논문에서는 세 가지 dataset에 대해 기존 연구방법의 여러 가지 유전자 추출 방법을 조사하고 Matlab으로 구현한 진화프로그램을 이용하여 새로운 데이터의 분류방법과 모델링 방법을 제안한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2705-2710
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• 2011

With the rapid development of information and communication technology, CBTC system based on the wireless communication is widely applied in the railway signal system recently. CBTC system has advantages of lower installation space and maintenance fee than existing systems and the increase of transportation capacity and improvement of operating efficiency etc. due to the short headway. Based on the continuous wireless data communication between onboard and wayside equipment, CBTC system not only locates the train and transmits the information required for the train control, but also implements the moving block function by calculating the brake curves continuously according to distance from the preceding train. CBTC system can use either inductive loop (IL-CBTC) or radio frequency transmissions (RF-CBTC). In this paper, we propose RF-CBTC system architecture based on the functional modules, in which the CAN bus network is applied for the interfaces between the modules.