한국어 원거리 음성의 지속시간 연구

김선희,Kim, Sun-Hee 대한음성학회 2005 말소리 Vol.54 No.-

This paper presents durational characteristics of Korean distant-talking speech using speech data, which consist of 500 distant-talking utterances and 500 normal utterances of 10 speakers (5 males and 5 females). Each file was segmented and labeled manually and the duration of each segment and each word was extracted. Using a statistical method, the durational change of distant-talking speech in comparison with normal speech was analyzed. The results show that the duration of words with distant-talking speech is increased in comparison with normal style, and that the average unvoiced consonantal duration is reduced while the average vocalic duration is increased. Female speakers show a stronger tendency towards lengthening the duration in distant-talking speech. Finally, this study also shows that the speakers of distant-talking speech could be classified according to their different duration rate.

Metal Organic Chemical Vapor Deposition법을 이용한 Germanium 전구체의 증착 특성 연구

김선희,김봉준,김도형,이준기,Kim, Sun-Hee,Kim, Bong-June,Kim, Do-Heyoung,Lee, June-Key 한국재료학회 2008 한국재료학회지 Vol.18 No.6

Polycrystalline germanium (Ge) thin films were grown by metal organic chemical vapor deposition (MOCVD) using tetra-allyl germanium [$Ge(allyl)_4$], and germane ($GeH_4$) as precursors. Ge thin films were grown on a $TiN(50nm)/SiO_2/Si$ substrate by varying the growth conditions of the reactive gas ($H_2$), temperature ($300-700^{\circ}C$) and pressure (1-760Torr). $H_2$ gas helps to remove carbon from Ge film for a $Ge(allyl)_4$ precursor but not for a $GeH_4$ precursor. $Ge(allyl)_4$ exhibits island growth (VW mode) characteristics under conditions of 760Torr at $400-700^{\circ}C$, whereas $GeH_4$ shows a layer growth pattern (FM mode) under conditions of 5Torr at $400-700^{\circ}C$. The activation energies of the two precursors under optimized deposition conditions were 13.4 KJ/mol and 31.0 KJ/mol, respectively.

일부 도시지역 노인의 영양섭취 실태와 그 관련요인에 관한 조사연구

김선희,Kim, Sun-Hee 대한예방의학회 1985 예방의학회지 Vol.18 No.1

This study was conducted to evaluate nutritional status with the analysis of the factors which might influence on the prevalent condition of nutrients-intake. 373 persons who are above 60 years old in Chung-Gu, Seoul were surveyed from March 15 to March 30 in 1985. Results were as follows ; 1. General Characteristics 1) Male respondents among the entire respondents comprised 54.3% and female respondents comprised 45.7%. As for age, male and female respondents comprised 55.0% and 37.2% respectively. 2) As for the educational level of the respondents, illiteracy was 49.9% which was the highest. and those who graduated elementary school was 28.1% which was the second highest. And as for the comparison of the education of the male and female respondents, the educational level of male respondents was much higher than that of female respondents. 3) As for the final occupation of the respondents, those who were engaged in commerce comprised 30.8% which was the highest rate, and who were engaged in agriculture comprised 20.1% which was the second highest rate. And those who were engaged in labor comprised 12.3%. 2. The State of Nutrients-intake The energy of the male respondents was 61.4% of RDA and the protein was nothing but 66.8% of RDA. Except vitamin A, vitamin $B_1$ and niacin, calcium, iron, vitamin $B_2$, vitamin C were lower than RDA (the range: $67.5%{\sim}97.3%$). The energy of the female respondents was 70.0% of RDA and the protein was 58.8% which were lower than RDA. Except vitamin A and vitamin $B_1$, calcium, iron, vitamin $B_2$ vitamin C, niacin were lower than RDA (the range: $68.2%{\sim}98.9%$). 3. The various factors related to nutrients-intake 1) The composition of family and the food environment those who were living with their spouses comprised 44.8% which was the highest rate, and those who were living with their son's family comprised 33.5% which was the second highest rate and those who were living with their doughter's family comprised only 4.6%. Those who were living alone comprised 16.4%. The correlation with nutrient intake didn't show a clear relation. 2) Socio-economic state Those who said that they lacked in living expense comprised 32.7% and those who said that they lacked in pocket-money comprised 23.9%, The female respondents outnumbered the male respondents in lacking living expense or pocket-money. In the correlation with socio-economic, there was no striking relation with education level. However, it was shown that little relation in energy, fat in male and also fat and iron in female. The living expense and the satisfaction in pocket-money had also little relation with energy fat and vitamin C in male. 3) Nutrition knowledge and food habit (a) The state of nutrition knowledge and food habit In nutrition knowledge, those who scored less than 60 points were 32.9%, and those who scored more than 90 points were 21.0%. In food habit, those who scored less than 60 points were 26.5% and those who scored more than 80 points were 45%. (b) The corelation with nutrition knowledge and food habit In case of female respondents, nutrition knowledge had a little relation with the intake of cabohydrate, iron, and vitamin C. And we couldn't see a distinct phenomenon in food habit.

Bacillus atrophaeus DYL-130이 생산하는 biosurfactant의 분리 및 특성

김선희,이상철,박인혜,유주순,주우홍,황철원,최용락,Kim Sun-Hee,Lee Sang-Cheol,Park In-Hye,Yoo Ju-Soon,Joo Woo-Hong,Hwang Cher-Won,Choi Young-Lark Korean Society of Life Science 2005 생명과학회지 Vol.15 No.5

원유 분해능이 강력한 균주를 얻고자 덕유산의 토양으로부터 crude oil을 탄소원으로 이용하는 수십 종을 분리하였다. 분리된 균주 중 원유분해능 및 biosurfactant 생성능이 우수한 균주를 선별하여, 형태학적 특성을 관찰하고 165 rDNA sequence와 』gyrA gene sequence를 통하여 Bacillus atrophaeus DYL-130으로 동정하였다. 동정된 균주 배양액의 표면장력은 최저 28 mN/m까지 감소되었다. 또한 Bacillus atrophaeus DYL-130이 생산하는 biosur-factant가 column chromatography에 의하여 분리 되었으며, 분리된 biosurfactant의 toluene 유화능 및 crude biosurfactant의 유화활성과 안정성이 시험 되었다. Crude biosurfactant의 유화활성은 kerosene에서 최대였으며, soybean oil에서도 높은 편이였으나 유화안정성의 경우 soybean oil을 기질로 하였을 경우가 kerosene을 기질로 하였을 때 보다 우수하였다. 또한 crude biosurfactant의 유화안정성을 합성계면활성제와 비교 한 결과 DYL-130이 생산하는 biosurfactant의 유화안정성이 합성계면활성제와 유사하거나 뛰어남을 확인하였다. Column chroma-tography에 의하여 분리된 biosurfactant는 drop-collapsing method에 의하여 surface-activity가 확인 되었으며 또한 toluene에 대한 유화력이 매우 뛰어난 것을 확인 하였다. 따라서 DYL-130에서 추출한 biosurfactant는 합성계면활성제를 대체할 수 있는 환경친화적인 생물 계면활성제로 사용될 수 있는 가능성을 보여주고 있다. 산업적으로 이 물질을 이용하기 위해서 Bacillus atrephaeus DYL-130이 생산하는 biosurfactant에 대한 구조분석과 물리 화학적 특성, 생분해도 및 환경독성 등의 조사를 수행하여야 할 것으로 생각된다. The objective of this study was investigate the characteristic of biosurfactant produced from the iso-lated strain. The strain was isolated from soli samples of Duck-Yu Mountain and it was identified as Bacillus atrophaeus DYL-130 by 16S rDNA and gyrA gene nucleotide sequence analysis. The surface ten-sion of culture filtrate of Bacillus atrophaeus DYL-130 decreased to 28 mN/m and its biosurfactant con-centration was determined by diluting the culture filtrate until the critical micelle concentration (CMC). The emulsifying activity and stability of crude biosurfactant was measured by using water-immiscible hydrocarbons and oils as substrate. The biosurfactant was purified by affinity chromatography and the surface activity of purified biosurfactant was measured by drop-collapsing method and it could be effectively emulsify toluene.

TIMSS 결과에 나타난 우리나라 교실내 수학 교육의 변화 추이 분석

김선희,김수진,Kim, Sun Hee,Kim, Soojin 한국수학사학회 2012 Journal for history of mathematics Vol.25 No.4

본 연구는 1995년부터 2007년에 이르기까지 4회에 걸친 TIMSS의 학교장과 수학 교사 설문 결과를 분석하여 우리나라 수학 교실 내에서의 수학교육의 변화를 수학 교수 학습 방법, 평가, 교사의 전문성 측면에서 살펴보았다. 교수 학습 방법에서는 수준별 수업이 최근 많이 실시되고 있으며, 교사보다 학생 중심의 활동 비중이 수업에서 늘어났고, 숙제 빈도는 늘었으나 소요 시간은 많지 않으며 숙제는 여러 가지 방법으로 수학 수업과 연계되도록 활용되고 있음이 나타났다. 수학 평가 문항은 객관식이 많이 활용되고 있고 다양한 방법의 평가가 점차 많이 활용되고 있었다. 수학 교사의 전문성 측면에서, 교사들은 고령화되고 있으며 수학과 수학교육 전공자가 늘었고 수학을 가르칠 준비에 자신감이 많지 않았다. 그러나 수학 교사들은 동료와 다양하게 상호작용을 하는 경향이 있었고 연수 참가 비율은 연수 내용에 따라 증감이 있었다. This study researched the trends of mathematics education in Korean mathematics class in the aspects of teaching and learning method, assessment and teachers' competency based on TIMSS 1995, 1999, 2003 and 2007. For the mathematics teaching and learning method, the differentiated instruction rate is higher. The activities focused on students not teacher are more, and frequencies of homework are higher but time spent for homework is less than the past. Especially, mathematics teachers link homeworks to instructions. And mathematics teachers uses more multiple choice items and more various assessment methods than the past. The average age of mathematics teachers tends to become older since 1995. The major of mathematics teacher are primarily mathematics and mathematics education. Korean mathematics teachers have less self-esteem for teaching mathematics contents and have more various interactions with peers. The rate of participating in-service training is more or less according to training contents.

HSB600 원형강관 기둥의 거동에 대한 실험적 연구

김선희,최영환,최성모,Kim, Sun Hee,Choi, Young Hwan,Choi, Sung Mo 한국강구조학회 2012 韓國鋼構造學會 論文集 Vol.24 No.6

본 논문은 HSB 강재를 보다 다양한 분야에 적용하기 위한 기본적인 연구로 HSB600 강재를 적용한 6개의 원형강관 기둥을 제작하여 구조적 특성을 고찰하고 현행 설계기준(KBC, Eurocode 3)의 적합성을 검토하였다. 실험의 주요변수는 세장비(KLe/r = 12, 14, 40, 65), 지름두께비(D/t = 25, 40), 편심비(e/D = 0, 0.5)이다. 실험결과를 현행 규준식과 비교한 결과 압축강도와 보-기둥 강도 모두 안전측으로 평가되어 현행 규준을 HSB600 강재에 적용할 수 있는 것으로 나타났다. This paper investigates an experimental behavior of circular columns and beam-columns made of HSB600 high strength steel as a fundamental study to enhance the applicability of HSB steel. The applicability of the current Standard such as KBC and Eurocode 3 is also evaluated. A total of six specimens are fabricated and tested. The main parameters are slenderness ratio(KLe/r = 12, 14, 40, 65), diameter-to-thickness ratio(D/t = 25, 40), and eccentricity ratio(e/D = 0, 0.5). It is drawn from the experiment that both the KBC and Eurocode 3 can be used to predict the strength of circular columns and beam-columns made of HSB600 high strength steel.

논문편 : 식이내 표고함량과 지방의 종류가 고콜레스테롤식이를 섭취한 흰쥐의 지방대사에 미치는 영향

김선희,유영상 ( Sun Hee Kim,Young Sang Yoo ) 대한가정학회 1992 Family and Environment Research Vol.30 No.2

조립형 무용접 좌굴방지재로 보강된 역V형 가새의 변형성능

김선희,문지영,최성모,Kim, Sun Hee,Moon, Ji Young,Choi, Sung Mo 한국강구조학회 2015 韓國鋼構造學會 論文集 Vol.27 No.3

철골 중심 가새 골조는 최소의 물량으로 건물의 횡력에 대한 저항력을 확보할 수 있는 매우 효과적인 시스템이다. 본 논문에서는 기 설치된 H형 가새를 무 용접 냉간 성형보강재로 보강하여 휨-좌굴을 억제하고 인장력과 압축력에 동일한 강도를 확보하는 보강안에 대한 연구를 진행하였다. 역 V형 가새 골조에 설치된 H형가 새의 보강방안으로 선행연구의 보강재를 약축 보강형으로 변경하여 보강방안을 제시하고 부재실험, 부재변수해석, 골조실험을 통해 구조성능을 평가하였다. 보강된 가새는 AISC기준을 만족하였다. 이를 통해 보강으로 골조내 가새의 불 균형력에 의한 보의 파괴가 방지될 것으로 기대된다. Steel concentrically braced frame is an efficient system that can acquire resistance against the lateral force of buildings with the least amount of quantity. In this study is intended to proceed on the research of schemes for reinforcement by supplementing previously installed H-formed brace with non-welded cold-formed plastic stiffening materials restricting the flexure and buckling and acquire a consistent strength on the tensile and compressive force. As for the measures of supplementing previously-installed inverted V-formed braced frame, stiffening materials in the previous studies were converted to weak-axial supplementing materials to suggest a specific scheme evaluating the structural function through an experiment of members, interpretation of members, and frame-focused experiment. Reinforced brace satisfied the requirement to be prevent AISC brace from being ruptured due to imbalanced strength in the beam.

분광타원법을 이용한 스퍼터된 Ta₂O₅ 박막의 광학적 특성

김선희,이의현,정인우,현장훈,이성용,강만일,류지욱,Kim, Sun-Hee,Lee, Eui-Hyun,Jung, In-Woo,Hyun, Jang-Hoon,Lee, Sung-Young,Kang, Man-Il,Ryu, Ji-Wook 한국진공학회 2009 Applied Science and Convergence Technology Vol.18 No.2

본 연구에서는 RF 파워, 기판의 종류, 산소분압비의 다양한 제작조건으로 RF 마그네트론 스퍼터링법을 이용하여 $Ta_{2}O_{5}$ 박막을 제작하였다. 제작된 $Ta_{2}O_{5}$ 박막의 분석을 위해 위상변조방식의 분광타원계를 이용하여 타원상수를 $1.0{\sim}4.0eV$ 영역에 걸쳐 측정하였고, Tauc-Lorentz 분산관계식을 이용하여 박막의 두께와 광학상수를 분석한 결과 제작조건에 따른 광학상수의 크기와 분간형태의 변화가 나타났다. 또한 분산관계식에 의해 분석된 박막의 두께와 광학상수를 이용하여 얻은 투과율 스펙트럼을 UV-Vis 분광광도계에 의해 측정된 값과 비교하여 타원상수 분석을 통해 얻은 두께와 광학상수의 신뢰성을 확인하였다. $Ta_{2}O_{5}$ thin films were deposited by RF magnetron sputtering method under various RF power, substrates and oxygen partial pressure. Elliptic constants were measured by using a phase modulated spectroscopic ellipsometer and analyzed with the Tauc-Lorentz dispersion formula and best fit method in the range of 310$\sim$1239 nm. Also, transmittance spectra of the films were measured by UV -Vis spectrophotometer in the range of 300$\sim$1000 nm. From these data, thickness of $Ta_{2}O_{5}$ and surface layer were analyzed and changes of magnitude and shape of dispersion of optical constants according to fabricated conditions were measured. Also, to evaluate thickness and optical constants data analyzed by Tauc-Lorentz dispersion formula, the measured and analyzed transmittance spectra were compared. In result of the comparison, two spectra were in good agreement each other. Accordingly, it indicates that our ellipsometric analysis is valid.

강섬유 콘크리트 혼입율에 따른 내부앵커형 콘크리트 충전기둥 내화성능에 관한 해석적 연구

김선희,염경수,김용환,최성모,Kim, Sun Hee,Yom, Kong Soo,Kim, Yong Hwan,Choi, Sung Mo 한국강구조학회 2016 韓國鋼構造學會 論文集 Vol.28 No.1

콘크리트 충전강관 기둥은 강관의 구속효과에 의해 콘크리트의 압축내력 상승과, 콘크리트에 의한 강관의 국부좌굴 보강효과에 의해 부재내력이 상승하고 뛰어난 변형성능을 발휘한다. 하지만, 기둥단면이 커질 경우 합성효과를 발휘하기 위하여 스터드 볼트나 후 시공 앵커 볼트를 사용해야 하는 시공상의 문제점이 발생된다. 이를 극복함과 동시에 합성효과를 증대시키기 위한 방안으로 내부에 리브가 설치된 용접조립 기둥이 소개되었다. 내부 리브는 콘크리트와 맞물려 있어 리브의 변형은 콘크리트의 균열을 촉진시키는 역할을 동반하게 된다. 이러한 잠재적인 문제에 대한 해결책은 강관 리브의 변형에 저항할 수 있도록 콘크리트 인성을 증가시킬 수 있는 방안이 필요하다. 언급된 두 가지의 문제점이 효과적으로 해결될 경우 용접조립 각형강관 기둥은 내화성능 확보가 가능하다고 판단된다. 본 연구에서는 해결방안으로 내부 콘크리트를 강섬유와 혼입하여 기둥 자체의 연성과 인성을 증대시키는 것에 중점을 맞추고 있다. 내화성능 평가를 위한 시험체는 총 8개 로 하중비에 따른 재하가열 실험을 실시하고 화재 전후 거동과 열 변형 능력을 주요변수별로 분석하였다. 실험결과와 선행연구 비교를 통해 열 전달과 열응력 해석 모델의 신뢰성을 확보하였으며, 강섬유 혼입율에 따른 변수해석을 수행하였다. Concrete filled steel tube system has two major advantages. First, the confinement effect of steel tube improves the compressive strength of concrete. Second, the load capacity and deformation capacity of members are improved because concrete restrains local buckling of steel tube. It does, however, involve workability problem of using stud bolts or anchor bolts to provide composite effect for larger cross-sections. While the ribs inside the columns are desirable in terms of compressive behavior, they cause the deterioration in load capacity upon in-plane deformation resulting from thermal deformation. Since the ribs are directly connected with the concrete, the deformation of the ribs accelerates concrete cracking. Thus, it is required to improve the toughness of the concrete to resist the deformation of the ribs. Welding built-up tubular square columns can secure safety in terms of fire resistance if the problem are solved. This study focuses on mixing steel fiber in the concrete to improve the ductility and toughness of the columns. In order to evaluate fire resistance performance, loaded heating test was conducted with 8 specimens. The behavior and thermal deformation capacity of the specimens were analyzed for major variables including load ratio. The reliability of heat transfer and thermal stress analysis model was verified through the comparison of the results between the test and previous study.