통일과 평화의 길

방윤수 한국여성평화연구원 2020 여성과평화 Vol.- No.6

구리표면에서이 표면증강 라만산란이 온도의존효과

방윤수 陸軍士官學校 2000 한국군사학논집 Vol.56 No.-

구리 표면에 흡착된 유기분자의 표면증강 라만산란(SERS)의 세기가 온도에 따라 변화하는 양상을 SERS의 전자기모델을 사용하여 계산하였다. 귀금속 표면에 흡착된 유기분자의 SERS의 세기는 저온에서 크게 증가하고 상온에서 감소하는 양상을 보인다. 온도에 따른 SERS의 세기변화에 영향을 줄 수 있는 요인들 중 laser에 의한 표면배열의 변화, 분자의 흡착과 탈착, adatom의 파괴 등은 주요한 영향을 미치지 않음이 입증되었다. 따라서 금속 표면의 광학적 성질의 변화만이 온도에 따른 SERS의 세기변화에 영향을 설명할 수 있게 된다. 본 연구에서는 구리 표면의 광학적 성질, 예를 들면, 굴절률(n)과 흡광계수(k), 유전율상수(ε) 의 온도에 따른 변화를 알아보고, 전자기모델을 이용하여 이러한 광학적 성질로부터 SERS의 세기변화를 예측해 본다.

설문조사를 통한 코로나19 시대 안전보건교육의 혁신방안에 대한 연구

안용로,방윤수,윤영근,오태근 국제문화기술진흥원 2022 The Journal of the Convergence on Culture Technolo Vol.8 No.3

코로나 19 시대에서 국내 건설현장 또한 그 영향에서 벗어날 수 없으며, 이를 예방하기 위해 현장 방역․위생 관리 강화, 인원 간 대면 접촉을 최소화하는 등 노력을 기울이고 있다. 특히 안전보건교육 운영상에 있어 교육 인원 규모 축소 등 많은 변화가 있으며 안전보건교육 소홀로 인한 재해 발생 증가 우려의 목소리 또한 높아지고 있다. 이 에 본 연구는 현장의 안전보건교육의 실태조사를 통해 포스트 코로나 시대에 부합하는 교육방향을 설정하고자 하며 이를 통해 사고감축에 기여하기 바란다. Construction sites cannot escape the impact of the COVID-19 situation, and various efforts has been made to prevent this, such as strengthening on-site quarantine and minimizing face-to-face contact between personnel. In particular, there have been many changes in the operation of safety and health education, such as reduction in the number of training, and an increase in accidents due to negligence in safety and health education. Therefore, this study tried to establish an educational direction suitable for the COVID-19 era by survey on the actual conditions of safety and health education in the field and it is hoped that research sutures will contribute to the reduction of accidents.

Excited-State Dynamics of Carotenoids Studied by Femtosecond Transient Absorption Spectroscopy

이인구,이세복,방윤수 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.3

Carotenoids, natural antenna pigments in photosynthesis share a symmetric backbone of conjugated polyenes. Contrary to the symmetric and almost planar geometries of carotenoids, excited state structure and dynamics of carotenoids are exceedingly complex. In this paper, recent infrared and visible transient absorption measurements and excitation dependent dynamics of 8'-apo-β-caroten-8'-al and 7',7'-dicyano-7'-apo-β- carotene will be reviewed. The recent visible transient absorption measurements of 8'-apo-β-caroten-8'-al in polar and nonpolar solvents will also be introduced to emphasize the complex excited-state dynamics and unsolved problems in the S2 and S1 excited states.

Excited state intramolecular proton transfer of 1,2- dihydroxyanthraquinone by femtosecond transient absorption spectroscopy

이세복,이재범,방윤수 한국물리학회 2015 Current Applied Physics Vol.15 No.11

1,2-Dihydroxyanthraquinone (alizarin) shows dual emission bands with a large Stokes shift from a “locally-excited (LE)” and “proton-transferred (PT)” tautomers in the excited state. Excited state intramolecular proton transfer (ESIPT) reaction of alizarin is tunable by changing concentration, solvent polarity, excitation wavelength, and etc. ESIPT reaction of alizarin in the excited state was investigated by steady-state absorption/emission spectroscopy and femtosecond transient absorption spectroscopy. In ethanol solution, the lifetime of PT tautomer of alizarin was measured as 87 ps, in addition to 0.35 and 8.3 ps vibrational cooling dynamics for the LE and PT tautomers of alizarin, respectively. In binary mixtures of ethanol and water, the excited state dynamics became more complicated; the LE and PT tautomers appeared to decay with 8.9 and 30.8 ps lifetimes, which is much shorter compared to the lifetime of the PT tautomer in ethanol. A long-lived nonradiative state in the excited states of alizarin was found as well, which was proposed as a “trapped” state with tightly hydrogen-bonded water molecules. The ESIPT reaction of alizarin was blocked in a 1:1 mixture of ethanol-water due to strong hydrogen bonding between water molecules and alizarin, which was further confirmed by the efficient coupling of alizarin to TiO2 nanoparticles in the 1:1 binary mixture of ethanol-water.

Excited-State Dynamics of All-trans-Retinal Investigated by Time-resolved Electronic and Vibrational Spectroscopy

Myungsam Jen,이세복,방윤수 대한화학회 2015 Bulletin of the Korean Chemical Society Vol.36 No.3

Time-resolved electronic and vibrational spectroscopy has been applied to understand ultrafast excited state dynamics of all-trans-retinal. Femtosecond transient absorption spectroscopy provides an overview of the excited-state dynamics of all-trans-retinal, and femtosecond-stimulated Raman and infrared absorption measurements, which have not been reported previously, provide further details of the structural changes in the excited states. Three singlet excited states and one triplet excited state have been identified from these experimental results, which are in good agreement with many previous reports. A change in the energy order of the singlet excited state of all-trans-retinal between in polar and nonpolar solvents abruptly modifies the excited state dynamics. The intersystem crossing to the T1 state from the S1 state (nπ*) almost disappears in polar solvents, whereas the fluorescence from S3 and S2 states (ππ*) is almost absent in nonpolar solvents.

Bloom의 신교육목표분류체계를 활용한 2015 개정 특수교육 기본 교육과정 성취기준 분석

강은영,권민효,유현욱,방윤수 한국특수교육학회 2022 특수교육학연구 Vol.57 No.1

The purpose of this study is to provide implications for setting the 2022 revised curriculum achievement standards by analyzing the 2015 revised basic curriculum achievement standards, among others, to provide a view of curriculum design and implementation using the basic curriculum achievement standards. To this end, a total of 1,130 achievement standards for the 2015 revised basic curriculum for special education were analyzed with the use of Bloom's new education objectives classification system. The main findings are as follows. First, because of the analysis of knowledge types, it is distributed with a focus on both factual and procedural knowledge. As a result of the analysis on the type of cognitive process, the distribution of 'remember,' 'understand,' and 'apply' is high; on the other hand, the cognitive process of 'analysis,' 'evaluate,' and 'creative' is low. Second, the results of the analysis of achievement-based knowledge types and cognitive process types by subject showed high factual knowledge types, followed by procedural knowledge types; furthermore, the distribution of both conceptual and metacognitive knowledge was relatively low. In the analysis of the cognitive process type, the cognitive process type of 'remember' and 'apply' was high; meanwhile, the cognitive process type of 'understand,' 'analysis,' 'evaluate,' and 'creative' were distributed low. An analysis regarding the relevance of knowledge types and cognitive process types by subject was found to present statements in the categories 'remember' and 'understand' in factual knowledge; the cognitive process of 'apply' in procedural knowledge; and statements in the categories 'analyze,' 'evaluate,' and 'creative' in metacognitive knowledge. Third, the results of the analysis of achievement-based knowledge type and cognitive process type by grade group showed the highest percentage of factual knowledge in all grade groups, followed by procedural knowledge, conceptual knowledge, and metacognitive knowledge. The results of the analysis on the type of cognitive process by grade group are distributed at a high rate in all grade groups that 'remember.' However, the cognitive processes of ‘analyze,’ ‘evaluate,’ and ‘create’ are distributed low. As a result of analyzing the relationship between the type of knowledge and the type of cognitive process by grade group, many statements in the 'remember' and 'understand' categories are distributed; in addition, conceptual statements are statements in the 'understand' category. Statement of the 'apply' category of procedural knowledge. In metacognitive knowledge, statements in the categories of 'analyze,' 'evaluate,' and 'creative' were found to be distributed. Based on these results, discussion points related to the development of future curriculum achievement standards were presented.