• 한국군사과학기술학회지
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• 제24권1호
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• pp.107-114
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• 2021

By analyzing the voice communication performance of the existing tactical FM radios, the performance target of the newly developing TICN combat network radio system VHF band tactical voice communication waveform was derived. In addition, a vocoder and modulation method that can satisfy the performance target and additional requirements are presented, and the expected voice communication quality is analyzed.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.1066-1067
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• 2004

New diffuser film for LCD backlight is developed. A diffuser film was manufactured through coating UV curable monomer on a plastic film. The diffuser layer coated on plastic film showed excellent optical transmittance.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2000년도 추계정기학술대회:지능형기술과 CRM
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• pp.235-244
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• 2000

본 논문에서는 모바일 인터넷으로 대표되는 제2차 IT혁명에서 세계 주도권을 노리고 있는 일본에 초점을 맞춘다. 특히 NTT DoCoMo의 i-mode 서비스, 즉$\ulcorner$휴대전화와 인터넷의 성공적 융합$\lrcorner$이라 할 수 있는 "모바일 인터넷"에 대한 분석과 성공전락 등을 통하여 향후 한국의 모바일 인터넷이 추구해야 할 방향성과 그 과제에 대하여 살펴보기로 한다.

• 농약과학회지
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• 제12권2호
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• pp.111-117
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• 2008

잿빛곰팡이균(Botrytis cinerea)에 대한 N-phenylbenzenesulfonamides 유도체(1-45)들의 살균활성에 관한 비교 분자장 분석(CoMFA)을 정량적으로 검토하였다. 통계적으로 CoMFA 모델의 예측성과 상관성이 비교분자 유사성 지수분석(CoMSIA) 모델보다 월등히 좋았다. 최적화 된 CoMFA I 모델의 통계값은 예측성이 $r^2_{cv.}(or\;q^2)=0.457$ 그리고 상관성이 $r^2_{ncv.}=0.959$이었고 살균활성은 기질 분자들의 입체장(51.9%)과 정전기장(35.6%)에 의존적이었다. 또한 progressive scrambling 분석으로 얻어진 섭동에 대한 감도($d_q^{2'}/dr^2_{yy'}=0.898$)와 예측성($q^2=0.346$ 및 SDEP=0.614)에 의하여 최적의 CoMFA I 모델은 우연 상관성에 의존적이지 않음을 알았다. 그러므로 CoMFA I 모델의 등고도 분석 결과로부터, N-phenyl 고리상 $R_3$ 및 $R_4$-치환기는 입체적으로 크고 $R_1$-치환기로서 S-phenyl 고리상 para-치환기는 입체적으로 작은 치환체가 살균활성에 기여 할 것으로 기대되었으며 최적화 된 CoMFA I 모델은 잿빛곰팡이균에 대한 살균활성을 예측하는데 유용하게 활용될 수 있을 것이다.

• 전자공학회논문지A
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• 제30A권11호
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• pp.99-104
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• 1993

We analyzed the D.I. water used in wet cleaning process of semiconductor device manufacturing both at the D.I. water plant and at the wafer cleaning bath to detect the impurity source of D.I. water contamination. This shows that the quantity of impurity is related to the resistivity of D.I. water, and we found that the cleanliness of the wafer surface processed in D.I. water bath was affected by the degree of the ionic impurity contamination. So we evaluated the cleaning effect as different method for Fe ion, having the best adsoptivity on wafer surface. Moreover the temperature effect of the D.I. water is investigated in case of anion in order to remove the chemical residue after wet process. In addition to the control of D.I. water resistivity, chemical analysis of impurity control in D.I. water should be included and a suitable cleaning an drinsing method needs to be investigated for a high yielding semiconductor device.

• 한국군사과학기술학회지
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• 제21권6호
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• pp.807-816
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• 2018

Threat hunting is defined as a process of proactively and iteratively searching through networks to detect and isolate advanced threats that evade existing security solutions. The main concept of threat hunting is to find out weak points and remedy them before actual cyber threat has occurred. And HMM(Hunting Maturity Matrix) is suggested to evolve hunting processes with five levels, therefore, CSOC(Cyber Security Operations Center) can refer HMM how to make them safer from complicated and organized cyber attacks. We are developing a system for cyber situation awareness system with pro-active threat hunting process called unMazeTM. With this unMaze, it can be upgraded CSOC's HMM level from initial level to basic level. CSOC with unMaze do threat hunting process not only detecting existing cyber equipment post-actively, but also proactively detecting cyber threat by fusing and analyzing cyber asset data and threat intelligence.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2000년도 영호남학술대회 논문집
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• pp.179-184
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• 2000

The I-V characteristics of $ZnO-Pr_6O_{11}-CoO-Dy_2O_3$ based varistors were investigated in the $Pr_6O_{11}/CoO$ composition ratio range of 0.5/0.5 to 1.0/1.0 and sintering temperature range of 1300 to $1350^{\circ}C$ as the basic study to develop the advanced $Pr_6O_{11}$-based ZnO varistors. All varistors except for $Pr_6O_{11}$/CoO = 0.5/1.0 exhibited the best I-V characteristics at $1350^{\circ}C$. However, the varistors with $Pr_6O_{11}$/CoO= 0.5/1.0 exhibited the best I-V characteristics at $1350^{\circ}C$. The varistors with $Pr_6O_{11}$/CoO= 0.5/1.0 of all varistors exhibited the best I-V characteristics, which the nonlinear exponent is 36.9 and the leakage current is 7.6 ${\mu}A$ Therefore, it was estimated that ZnO-$Pr_6O_{11}-CoO-Dy_2O_3$ ceramics with $Pr_6O_{11}$/CoO= 0.5/1.0 will be usefully used as varistor materials in the future.

• 한국공간구조학회지
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• 제18권3호
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• pp.8-18
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• 2018

• 보험의학회지
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• 제17권
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• pp.109-125
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• 1998

• 한국세라믹학회:학술대회논문집
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• 한국세라믹학회 2004년도 춘계총회 및 연구발표회 초록집
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• pp.36.3-36.3
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• 2004