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정명애 에스케이텔레콤 (주) 2009 Telecommunications Review Vol.19 No.5
최근 세계적인 금융위기를 극복하기 위한 경기회복 정책의 하나 뿐 아니라 미래의 새로운 성장동력으로서 녹색산 업이 거론되고 있다. 녹색산업원 또는 경기부양책으로 융합과 녹색산업 패러다임의 새로운 등장에 힘입어 IT 기술 기 반 융합의 역활이 강조되고 있다. 즉 녹색성장을 위한 IT융합기술 및 산업에 우리의 미래가 달려있다고 볼 수 있다. 본 고는 세계적 녹색성장 추세와 더불어 IT를 활용한 기술간, 산업간의 융합 현황과 그 발전을 위한 각 나라의 융합 정책 추진 현황을 살펴봄으로 IT의 역할과 중요성에 대하여 생각해보는 계기를 마련하고 선진국들의 추진 사례가 우리에게 주는 시사점들에 대해 생각해 보고자 마련되었다.
Two-Photon Absorption Cross Sections of Dithienothiophene-Based Molecules
정명애,이광섭,정상돈 한국전자통신연구원 2002 ETRI Journal Vol.24 No.3
We performed nonlinear transmission measurements and quantum-chemical calculations on dithienothiophene (DTT)-based molecules to gain insight into the effect of acceptor and donor groups on two-photon absorption (TPA) properties. The TPA intensity showed dispersion characteristics of the single-photon absorption spectrum. When the molecules included an asymmetric donoracceptor pair, the single- and two-photon absorption maximum wavelengths were red-shifted more than when the molecules had a symmetric donor-donor structure. We interpreted this result as indicating that the S2 state plays the dominating role in the absorption process of molecules with a symmetric structure. The experimental TPA d values at the absorption peak wavelength showed a dependence on the structural variations. We found the selfconsistent force-field theory and Hartree -Fock Hamiltonian with single configuration interaction formalism to be valid for evaluating TPA d. Although the quantum-chemical calculations slightly underestimated the experimental d values obtained from nonlinear trans - mission measurements, they reasonably predicted the dependence of the d value on the structural variations. We confirmed the role of molecular symmetry by observing that donor-donor substituted structure gave the highest experimental and theoretical TPA d values and that the donor-acceptor substituted structure showed a greater redshift in the TPA absorption maximum wavelength. Overall, the theoretical d values of DTT-based molecules were in the order of 10–46 cm4 · s · photon-1 and are higher than that of AF-50 by nearly two orders of magnitude.
학교 안전교육이 초등학생의 안전생활 실천에 미치는 효과
정명애,박경민,권영숙,Jung, Myung-Ae,Park, Kyung-Min,Kwon, Young-Sook 한국지역사회간호학회 2000 지역사회간호학회지 Vol.11 No.2
This study was carried out to examine the effects of school safety education on the safety behavior among elementary school students. Sixty-two 4th grade students were sampled from an elementary school in Pohang city and divided into one experimental group and one control group. The safety education has been provided to the experimental group for 4 weeks The data were collected before, just after, and 8 weeks after the education. In the pre-test, the general characteristics and safety behavior between two groups were measured. The experimental group was given school safety education twice a week for 4weeks. They also filled out the self behavior check list. In the post-test and follow up-test safety behavior was collected. The data analysis was done using $X^2$-test. t-test. Repeated measures ANOVA, analysis of simple main effect and time contrast methods, they were processed with an SPSS Win 9.0/pc. The results of this study are summarized as follows: 1) There were no differences between experimental group and control group on the general characteristics and safety behavior in the pre-test. 2) The hypothesis: 'The experimental group which was given school safety education will show higher scores on safety behavior than the control group which was not given this was supported(F=6.43 p=0.01). 3) The subhypothesis 1 : 'The scores on the indoor safety behavior of the experimental group which was given school safety education will show higher than those of the control group which were given this was supported(F=3.59 p=0.03). 4) The subhypothesis 2 : 'The scores on the outdoor safety behavior of the experimental group which was given, school safety education will show higher than those of the control group which was not given this was supported(F=5.70 p =0.00). In consequence, the experimental group which was given school safety education scored higher on safety behavior than the control group. Therefore, school safety education should continue to encourage safety behavior among elementary school students.
A Study on the Generation of Datasets for Applied AI to OLED Life Prediction
정명애,Dong-Hun HAN,SeongDeokAhn,강민수 한국인공지능학회 2022 인공지능연구 (KJAI) Vol.10 No.2
OLED displays cannot be used permanently due to burn-in or generation of dark spots due to degradation. Therefore, the time when the display can operate normally is very important. It is close to impossible to physically measure the time when the display operates normally. Therefore, the time that works normally should be predicted in a way other than a physical way. Therefore, if you do computer simulations based on artificial intelligence, you can increase the accuracy of prediction by saving time and continuous learning. Therefore, if we do computer simulations based on artificial intelligence, we can increase the accuracy of prediction by saving time and continuous learning. In this paper, a dataset in the form of development from generation to diffusion of dark spots, which is one of the causes related to the life of OLED, was generated by applying the finite element method. The dark spots were generated in nine conditions, such as 0.1 to 2.0 μm with the size of pinholes, the number was 10 to 100, and 50% with water content. The learning data created in this way may be a criterion for generating an artificial intelligence-based dataset.