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- 저자 : 임은수(Eun-Su Lim) (검색결과 5 건)
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새로운 환기효율지표 Net Escape Velocity에 의한 오염물질 흡착건재의 실내 오염물질 농도저감 효과 평가
임은수(Lim, Eun-Su) 대한건축학회 2013 대한건축학회논문집 Vol.29 No.11
Net Escape Velocity (hereafter NEV) is a new index for evaluating ventilation efficiency. It presents the effective velocity with regard to purging/diluting a contaminant from a certain point within a room. NEV is determined by the average contaminant concentration and the convection and diffusion fluxes at a particular point. NEV can identify the convection and diffusion effect of contaminant transportation in order to define that concentration at a point using one representative velocity scale. The use of sorptive building materials is an effective way to optimize the ventilation rate and to improve/maintain indoor air quality (IAQ). However, efforts to improve IAQ will necessitate a qualitative and quantitative performance evaluation of building materials. The purpose of this paper is to introduce the concept of new ventilation index NEV and to evaluate the contaminant concentration reduction mechanism of sorptive building materials using the concept of NEV.
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임은수(Eun Su Lim),조영숙(Young Sook Cho),김세나(Se Na Kim),김숙배(Sook Bae Kim) 대한지역사회영양학회 2012 대한지역사회영양학회지 Vol.17 No.6
The purpose of this study was to evaluate effects of a nutrition education focused on Food Exchange System for the higher grades elementary children. Nutrition education lessons (40 min/lesson, 4 times), ‘5 major nutrients and functions’, ‘6 food groups’, ‘daily needed energy and food exchange units’, ‘good choice of snacks and balanced exercise’ were provided to elementary students (5th grade students). This research was based on the data from two groups of elementary school children in the ‘education’ group (n = 31) and ‘non-education’ group (n = 31). We assessed the changes in dietary attitude, food habit and nutrition knowledge using questionnaire and nutrient intake using 24hr recall method by nutrition education using the developed pamphlet. After education, there was a significant difference in the dietary attitude score only in attitude of ‘balanced meal’ (p < 0.001) in the education group compared to the non-education group. In food habit, there were significant positive changes in the type of breakfast and in the priority of choosing snack in the educated group. In nutrition knowledge, there were significant increases in scores of ‘function of carbohydrate’ (p < 0.05), ‘function of fat’ (p < 0.01), ‘function of vitamin’ (p < 0.01), ‘foods of carbohydrate’ (p < 0.01), and ‘foods of vitamin’ (p < 0.01) in the educated group. After education,carbohydrate: protein: fat (CPF) ratio was significantly different between the two groups (education group, 59 : 16 : 26 vs. non-education group, 63 : 15 : 23). In evaluation of nutrient intake by Dietary Reference Intakes for Koreans (KDRIs), there were significant positive effects in energy (p < 0.05), thiamin (p < 0.05), riboflavin (p < 0.05), vitamin C (p < 0.05), phosphorus (p < 0.01), Fe (p < 0.01) and zinc (p < 0.01) in the education group compared to the non-education group. In conclusion, the developed 4 times` nutritional education pamphlet focused on individual daily energy requirements and food exchange units using food exchange system for higher grades` elementary student may positively change nutrition knowledge and dietary intakes. (Korean J Community Nutr 17(6) : 689~706, 2012)
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임은수,김현기,김병삼,김종교 한국음성과학회 1999 음성과학 Vol.6 No.1
In a noisy class, the acoustic-phonetic features of the teacher and the perceptual features of learners are changed comparison with a quiet environment. Acoustical analyses were carried out on a set of French monosyllables consisting of 17 consonants and three vowel /a, e, i/, produced by 1 male speaker talking in quiet and in 50, 60 and 70 dB SPL of masking noise on headphone. The results of the acoustic analyses showed consistent differences in energy and formant center frequency amplitude of consonants and vowels, F_1 frequency of vowel and duration of voiceless stops suggesting the increase of vocal effort. The perceptual experiments in which 18 undergraduate female students learning French served as the subjects, were conducted in quiet and in 50, 60 dB of masking noise. The identification scores on consonants were higher in Lombard speech than in normal speech, suggesting that the speaker's vocal effort is useful to overcome the masking effect of noise. And, with increased noise level, the perceptual response to the French consonants given had a tendency to be complex and the subjective reaction score on the noise using the vocabulary representative of "unpleasant" sensation to be higher. And, in the point of view on the L2(second language) acquisition, the influence of L1(first language) on L2 examined in the perceptual result supports the interference theory. Keywords: Lombard speech, class, L2 acquisition, noise, perception
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