• 한국진공학회:학술대회논문집
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• 한국진공학회 2011년도 제40회 동계학술대회 초록집
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• pp.114-114
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• 2011

We report a high-performance and air-stable flexible and invisible semiconductor which can be substitute for the n-type organic semiconductors. N-type organic-inorganic nanohybrid superlattices were developed for active semiconducting channel layers of thin film transistors at low temperature of $150^{\circ}C$ by using molecular layer deposition with atomic layer deposition. In these nanohybrid superlattices, self-assembled organic layers (SAOLs) offer structural flexibility, whereas ZnO inorganic layers provide the potential for semiconducting properties, and thermal and mechanical stability. The prepared SAOLs-ZnO nanohybrid thin films exhibited good flexibility, transparent in the visible range, and excellent field effect mobility (> 7cm2/$V{\cdot}s$) under low voltage operation (from -1 to 3V). The nanohybrid semiconductor is also compatible with pentacene in p-n junction diodes.

• 한국세라믹학회지
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• 제31권9호
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• pp.995-1004
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• 1994

Phase relation and microwave dielectric properties of the system BaO.(Nd1-xSmx)2O3.TiO2 (n=4, 5) were studied. With n=5 (1 : 1 : 5), Ba2Ti9O20 and TiO2 formed in case of X$\leq$0.7, and Ba2Ti9O20 and Sm2Ti2O7 formed at X=1.0 as the second phases dispersed in fine-grained orthorhombic matrix phase. With n=4 (1 : 1 : 4). on the contrary, only fine grains of an ortho-rhombic phase were observed irrespective of Nd/Sm ratio. The compositions of these two stable orthorombic phases having distinct lattic constants even with the same Nd/Sm ratio were estimated as 4BaO.5(Nd1-xSmx)2O3.18TiO2 and BaO.(Nd1-xSmx)2O3.4TiO2 with n=5 and n=4 in the system BaO.(Nd1-xSmx)2O3.TiO2, respectively. Consequently the composition BaO.(Nd1-xSmx)2O3.5TiO2 lies in the compatible triangle of 4BaO.5(Nd1-xSmx)2O3.18TiO2 and the second phases mentioned above. The microwave dielectric properties (~4 GHz) of BaO.(Nd1-xSmx)2O3.5TiO2 can be controlled effectively by adjusting Sm content : with increasing X from 0 to 0.7, both dielectric constant and the temperature coefficient of resonant frequency decreased monotonically from 82 to 65 and from 91 (ppm/$^{\circ}C$) to -19(ppm/$^{\circ}C$), respectively, while unloaded Q(Qo) remained constant at about 2,600.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 춘계학술대회
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• pp.895-898
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• 2009

본 연구에서는 임베디드 시스템, 특히 블루투스 베이스밴드에서 사용이 가능한 범용 I/O를 설계하였다. 제안하는 구조는 AMBA 버스구조의 APB 저전력 버스에 호환되도록 설계하였다. 임베디드 시스템에서 사용 가능한 범용 I/O를 인터럽트 소스로 사용될 수 있어야 한다. 본 연구에서는 에지 민감 방식과 레벨 민감 방식 모두를 고려하여 인터럽트를 수용할 수 있도록 설계하였고, 동작 폴라리티를 선택할 수 있어 임베디드 시스템에 유연하게 적용될 수 있도록 고려하였다. 설계한 범용 I/O 모듈은 자동합성하여 P&R을 수행하였다. 결과물은 Altera FPGA로 구현하였으며 25MHz에서 정상 동작하였다.

• 반도체디스플레이기술학회지
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• 제16권2호
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• pp.66-69
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• 2017

In this paper, solution based Indium Zinc Oxide thin film transistors (IZO TFTs) were fabricated with PVP gate dielectric. To enhance the electrical properties, UV-O3 treatment is proposed on solution based IZO TFTs. The gate leakage current and interface trap density is compatible with conventional ZnO-based TFT with inorganic gate insulator. Especially, the UV-treated device shows improved electrical characteristics compared to the untreated device. These results can be explained by X-ray photoelectron spectroscopy (XPS) analysis, which shows that the oxygen vacancy of UV-O3 treatment is higher than that of no treatment.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제26권4호
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• pp.277-288
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• 2019

The main objective of this article is to establish some coincidence point theorem for g-non-decreasing mappings under contraction mapping principle on a partially ordered metric space. Furthermore, we constitute multidimensional results as a simple consequences of our unidimensional coincidence point theorem. Our results improve and generalize various known results.

• 전자통신동향분석
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• 제9권3호
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• pp.153-160
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• 1994

보청기가 자계 픽업코일을 구비하고 있고, 전화 수화기에서 충분한 자계를 발생할 경우 전화 수화기와 보청기의 자기결합을 이용한 전화기를 보청기 호환성 전화기라고 한다. 본 고에서는 보청기와 전화 수화기의 결합방법과 자기결합에 관한 국제 기준을 고찰하여, 국내의 보청기 호환성 전화기의 자계세기의 기준 및 측정법에 관한 검토사항을 제시한다.

• Journal of applied mathematics & informatics
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• 제16권1_2호
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• pp.453-459
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• 2004

A left-invariant flat Riemannian connection on a Lie group makes its Lie algebra a left symmetric algebra compatible with an inner product. The left symmetric algebra is decomposed into trivial ideal and a subalgebra of e(l). Using this result, the Lie group is embedded isomorphically into the direct product of O(l) $\times$ $R^{k}$ for some nonnegative integers l and k.

• The Plant Pathology Journal
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• 제34권1호
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• pp.35-43
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• 2018

Root-knot nematodes (Meloidogyne spp.) are parasites that attack many field crops and orchard trees, and affect both the quantity and quality of the products. A root-colonizing bacterium, Pseudomonas chlororaphis O6, possesses beneficial traits including strong nematicidal activity. To determine the molecular mechanisms involved in the nematicidal activity of P. chlororaphis O6, we constructed two mutants; one lacking hydrogen cyanide production, and a second lacking an insecticidal toxin, FitD. Root drenching with wild-type P. chlororaphis O6 cells caused juvenile mortality in vitro and in planta. Efficacy was not altered in the fitD mutant compared to the wild-type but was reduced in both bioassays for the mutant lacking hydrogen cyanide production. The reduced number of galls on tomato plants caused by the wild-type strain was comparable to that of a standard chemical nematicide. These findings suggest that hydrogen cyanide-producing root colonizers, such as P. chlororaphis O6, could be formulated as "green" nematicides that are compatible with many crops and offer agricultural sustainability.

• 한국표면공학회지
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• 제38권2호
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• pp.73-78
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• 2005

A real-time monitoring of ICP(inductively coupled plasma) assisted magnetron sputtering of MgO was carried out using a QMS(quadrupole mass spectrometer), an OES(optical emission spectrometer), and a digital oscilloscope with a high voltage probe and a current monitor. At the time of ICP ignition, the most distinct impurity was OH emission (308.9 nm) which was dissociated from water molecules. For reactive deposition oxygen was added to Ar and the OH emission intensity was reduced abruptly When the discharge voltage was regulated by a PID controller from 240V(metallic mode) to 120V(oxide mode), the emission intensity from Mg (285.2 nm) changed proportionally to the discharge voltage, but the intensity of Ar I(811.6 nm) was constant. At 100V of discharge voltage, Mg sputtering was almost stopped. Emissions from Ar I(420.1 nm) and Mg I were dropped down to 1/10, but Ar I(811.6 nm) didn't change. And the emission from atomic oxygen (O I, 777.3 nm) was increased to 10 times. These results are compatible with those from QMS study.

• 복식
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• 제25권
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• pp.157-169
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• 1995

The confucianism, the Taoism, the Budd-hism and the Folk-Faith actually coexisted and all of them had also widespread infuluence on the Chosun Society. This thesis is designed to study symbol of Color Scheme expressed in the clothing of Chosun dynasty. For this thesis I examined records of Royal archives, books containing lifestyle of Chosun dynasty, genre paintings, documantary pain-tings, excorcist clothing and existing remains. And I synthetically studied symbol of the Clothing Color Schemes in Chosun dynasty on the bases of theoretical researches. The result were as follows. There were many cases of 1. Upper·lowergarments : Red-Blue, White-Blue, White-Blue Color Schemes. 3. Exorcist clothing : Red-Red, Blue-Yellow, Blue-Blue Color Schemes. 4. Multy-colored stripes : Same color arrange-ments were avoided in Color Schemes. In the case of Green Wonsam, Blue-Red-Yellow-White Clothing Color Scheme was obvious. 5. Dance wear : Red-Blue, Yellow-Red Color Schemes. Generally more than anything else Blue-red Clothing Color Scheme was widely used. Be-sides Blue-Red Color Scheme, there were also many cases of Red-Yellow, White-Blue Cloth-ing Color Schemes. As a whole, compatible Color Schemes were more often used than in-compatible Color Schemes were used with various symbols that were based on color concept of Yin-Yang O-haeng, Tae-il theory Folk-Faith and so forth in Chosun dynasty.