건축구조용강재(SN490) 조립 H형강 기둥-보 접합부의 이력거동에 관한 실험적 연구

김선희,이성희,김진호,김대중,최성모,Kim, Sun Hee,Lee, Seong Hui,Kim, Jin Ho,Kim, Dae Jung,Choi, Sung Mo 한국강구조학회 2008 韓國鋼構造學會 論文集 Vol.20 No.6

1994년 노스리지 지진 이전 우수한 연성능력을 보유한 내진상세로 생각되던 WUF-B 접합부의 기둥-보플랜지 용접위치에서 발생 한 취성파괴는 WUF-B 접합부에 대한 새로운 고찰을 요구하였다. FEMA(Federal Emergency Management Agency)의 후원으로 SAC Steel Project에서는 WUF-B 접합부의 스캘럽(Weld access holes) 형상, 용접과정, 용접재료 등을 개정한 내진상세를 FEMA-350에 제안하 였다. AISC Seismic Provisions(2005)에서는 WUF-B 접합부를 OMF(Ordinary Moment Frames)로만 사용하도록 규정하고 있다. 본 연 구에서는 SM490 및 SN490 조립형강을 이용하여 FEMA-350에 제시된 WUF-B 상세 규정을 따라 강종(SM, SN), 보플랜지두께, 보의 춤을 변수로 기둥-보 접합부 실대 실험체 2개를 제작하여 실험을 수행하였으며, 내진성능 평가를 위한 가력 방법 및 내진성능을 평가하였다. JB-1, JB-2 실험체는 AISC Seismic Provisions(2005)에서 제시하고 있는 OMF와 SMF 내진성능을 만족하는 결과를 나타났으며, 보플랜지 두께와 보의 춤에 따른 WUF-B 접합부의 내진성능이 재정의 될 필요가 있는 것으로 사료된다. The brittle failure where is occurred the welding position of column-beam flange of WUF-B connection that consider about a seismic detail possess a superior ductility capacity before Northridge earthquake 1994, require newly study about WUF-B connection. SAC Steel Project suggests a seismic detail to FEMA-350 by supporting of FEMA. It revise shape of weld access holes of WUF-B connection, welding processand welding material etc, In spite of these revision, AISC Seismic Provisions (2005) prescribe WUF-B connection using an only OMF. Recently in Korea, as the earthquake of about seismic intensity 5 occur, the necessity of revision for connection seismic detail comes to the front in Korea and FEMA-350 connection seismic details are going to include in KBC-2008 as it is. In this study, two column-beam connection specimens were marked by using SM490, SN490 built-up H-section, and based on WUF-B detail prescription of FEMA350. The parameters of the specimens are types of steel (SM, SN), and evaluate the capacities of structure and seismic by experiment. Finally we confirm a superior ductility capacity aboutspecimens JB-1 and JB-2, using SM490 and SN490,and these specimens had sufficient OMF and SMF seismic capacity, as indicated in AISC Seismic Provisions (2005).

대만과 우리나라의 수학 교육체계 및 대수 교육과정과 교과서 비교 -TIMSS 2007 결과를 중심으로-

김선희,김경희,Kim, Sun-Hee,Kim, Kyeong-Hee 한국수학사학회 2010 Journal for history of mathematics Vol.23 No.4

Chinese Taipei won the first place at the mathematics achievement of TIMSS 2007. Especially, there was a significant difference in the percentage of correct answers between Chinese Taipei and Korea, and Chinese Taipei' percentage of correct answers was higher than Korea. This study compared the education system, mathematics instruction environment, and instructional activities of two countries. And for algebra, curriculum and textbooks were compared between two countries based on TIMSS 2007 framework. It was found that Chinese Taipei emphasized homework and test, and MCFL of that was low. Their textbook was formal, and induced the hasty abstraction, Also, some themes were introduced earlier than Korea and repeated across different grades. TIMSS 2007 결과에서 국저l 성취 순위 1위를 차지한 대만에 비해 우리나라는 대수 영역에서 통계적으로 유의하게 낮은 정답률을 보였다. 이에 본 연구에서는 대만의 목표, 수학 수업 환경, 수학 수업 활동을 우리나라와 비교하고, 대수 영역의 교육과정을 구체적으로 살펴보았다. 특히, 우리나라의 정답률이 대만의 정답률에 비해 낮은 대수 영역의 '패턴'과 '대수식'의 주제의 개념 도입 순서, 교과서 내용 전개에 대하여 TIMSS의 평가목표별로 분석하였다. 일반적으로 대만의 수학교육은 학생 특성으로 연해 교사들이 수업에 제약을 많이 받고 있었고 우리나라보다 숙제와 시험을 강조하는 경향이 있었다. 대만의 교과서는 정의, 성질 위주로 제시되는 다소 형식적인 모습이었으며 다소 성급한 유도하고 있었다. 그리고 수의 연산 법칙 문자, 방정식, 부등식, 곱셈공식, 이차 방정식, 피타고라스의 정리 등의 내용이 우리나라보다 이른 시기에 도입되고 여러 학년에 걸쳐 중복하여 다루어지는 경향을 보였다.

발효 , 세포배양 , 생물공정 Red Beet 의 모상근 배양을 이용한 천연색소인 Betacyanin 생산의 최적화

김선희,김성훈,이주노,안상욱,김광수,황백,이현용 ( Sun Hee Kim,Sung Hoon Kim,Ju No Lee,Sang Wook An,Kwang Soo Kim,Baik Hwang,Hyeon Yong Lee ) 한국미생물생명공학회 1998 한국미생물·생명공학회지 Vol.26 No.5

신경인지재활치료가 뇌졸중 환자의 편측무시에 미치는 효과

김선희0(Sun Hee Kim),존은미(Eun Mi Jeon),문영주(Young Ju Moon),임연주(Yean Ju Lim) 한국인지운동치료협회 2013 한국신경인지재활치료학회지 Vol.5 No.1

본 연구의 목적은 신경인지재활치료가 뇌졸중 환자의 편측무시에 미치는 효과에 대해 알아보고 기초 자료를 제공하고자 한다. 방법: 연구대상은 뇌졸중으로 인한 좌측 편마비 진단을 받은 1인으로 개별실험 연구 설계를 적용하였다. 대상자 선별을 위해 한국판 간이정신상태검사(MMSE-K)와 시지각검사(MVPT)를 사용하였고, 편측무시 정도 변화 측정을 위해 선나누기검사(line-bisection test)와 시계그리기 검사(clock drawing test)를 사용하였다. 연구는 신경인지재활치료를 적용하기 전, 적용한 후, 추적 조사의 결과를 측정하였다. 결과: 연구결과 대상자는 선나누기 검사에서 치료 전에는 평균 43.3mrn의 오차였던 것이 신경인지재활치료를 적용한 후 평균 37mrn으로 줄어들었다. 추적 조사 결과에서는 평균 39.6mrn의 오차가 있었는데, 치료 후에 비해 오차가 늘었지만, 치료 전보다 오차가 줄어들었다. 시계그리기 검사는 치료 전에서는 1점이었는데 신경인지재활치료를 적용한후2점으로 향상되었고, 추적 조사결과 2점으로 유지되었다. 결론: 뇌졸중 환자의 편측무시를 감소시킬 수 있는 치료 중 재프로그램으로 신경인지재활치료가 적용될 수 있을 것으로 사료된다. Objective: The aim of this research is to provide basic data about the effects of Neurocognitive Rehabilitation Treatment on the hemineglect of stroke patients. Methods: The subject of the present study was one person diagnosed as left hemiplegia due to stroke and a single subject experimental research design was applied. Korea Mini Mental State Examination (MMSE-K) and a visual perception test (MVPT) were used to select the subject, and the line-bisection test and clock drawing test were used to measure an alteration of the unilateral neglect degree. The study measured results before and after the application of neurocognitive rehabilitation therapy, and results of the follow-up study. Results: According to the results of the present study, in the line-bisection test, an error of 43.3mm in average before the neurocognitive rehabilitation therapy decreased to 37mm in average after the application of the therapy. In the follow-up study results, there was an error of 39.6mm in average, which decreased after the therapy. In the clock drawing test, the score was I point before the therapy, but it increased to two after the neurocognitive rehabilitation therapy, and the result of the follow-up study remained at two points. Conclusion: We believe Neurocognitive Rehabilitation Treatment may be applied as a treatment mediation program that may be used to reduce the hemineglect of stroke patients. (J Korean Society of Neurocognitive Rehabilitation 2013;5;47-53)

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.

검정콩의 주요 항산화 원인물질 및 항산화 효과의 비교

김선희,권태완,이영순,정명근,문갑순,Kim, Sun-Hee,Kwon, Tai-Wan,Lee, Young-Soon,Choung, Myoung-Gun,Moon, Gap-Soon 한국식품과학회 2005 한국식품과학회지 Vol.37 No.1

검정콩에 함유되어 있는 성분들 중 주요 항산화 원인물질을 구명학기 위하여 청자콩의 isoflavone, 토코페롤, phenolic acids 및 안토시아닌의 함량을 측정하였다. 그 결과 genistein이 43.86mg%, daidzein이 31.73mg% 함유되어 있었으며, 토코페롤 함량은 ${\alpha}$-토코페롤이 1.99mg%, ${\beta}$-토코페롤 0.47mg%, ${\gamma}$-토코페롤 10.68mg%, ${\dalta}$-토코페롤 3.95mg%이 함유되어 있었다. 11종류의 phenolic acids에서는 benzoic(126.70mg%)>p-coumaric(67.68)>salicylic(59.40)>gentisic(43.19)>ferulic(16.57)>syringic(15.04)>chlorogenic(8.00)>caffeic(4.53)>vanillic(2.82)>p-OH benzoic(2.47)>trans-cinnamic acid(1.00)의 순으로 함유되어 있었으며, 검정콩 종피에 함유되어 있는 안토시아닌을 측정한 결과 delphinidin 3-glucoside가 1.42, cyanidin 3-glucoside 5.77 및 petunidin 3-glucoside가 0.30mg/g이었다. 검정콩에 함유되어 있는 항산화 물질들 (안토시아닌, isoflavone, phenolic acids 및 토코페롤)을 검정콩에 들어있는 함량과 비례하도록 조제하여 TEAC법으로 항산화 효과를 측정한 결과, genistein, gentisic acid, ${\gamma}$-토코페롤, 안토시아닌의 항산화 효과가 높은 것으로 나타났다. 네 종류의 항산화 물질들의 시너지 효과를 분석한 결과, 이들은 서로 시너지 효과가 있는 것으로 나타났으며 특히 안토시아닌을 혼합할 때 시너지 효과가 가장 높게 나타나 검정콩의 항산화 효과에 안토시아닌이 크게 관여하고 있음을 알 수 있었다. Contents of isoflavone, phenolic acids, tocopherol, and anthocyanin in black soybean (Glycine max) were measured by HPLC. To compare antioxidative activities of main black soybean components, antioxidative effects of the same levels of commercial standard components were measured by Trolox equivalent antioxidant capacity assay (TEAC). Most effective component was gentisic acid followed by anthocyanin, p-coumaric acid, ferulic acid, genistein, syringic acid, and daidzein. TEAC assay results revealed genistein in isoflavone, gentisic acid in phenolic acids, p-tocopherol in tocopherol, and anthocyanin showed highest antioxidative and synergistic acitivities, with anthocyanin showing strongest synergy effect.

Chitosan이 치주인대, 두개관 및 치은섬유아세포의 성상에 미치는 영향

김선희,권영혁,이만섭,박준봉,허익,Kim, Sun-Hee,Kwon, Young-Hyuk,Lee, Man-Sup,Park, Joon-Bong,Herr, Yeek 대한치주과학회 1998 Journal of Periodontal & Implant Science Vol.28 No.1

Chitosan, with a chemical structure similar to hyaluronic acid, has been implicated as a wound healing agent. The purpose of this research was to evaluate the effects of chitosan on the characteristics of periodontal ligament cells, calvaria cells and gingival fibroblasts and to define the effects of chitosan on bone formation in vitro. In control group, the cells were cultured alone with Dulbecco's Modified Eagle's Medium contained with 10% Fetal bovine serum, 100unit/ml penicillin, $100{\mu}g/ml$ streptomycin, $0.5{\mu}g/ml$ amphotericin-B. In experimental group, chitosan($40{\mu}g/ml$) is added into the above culture condition. And then each group was characterized by examining the cell proliferation at 1,3,5,7,9,12,15 day, the amount of total protein synthesis, alkaline phosphatase activity at 3, 7 day and the ability to produce mineralized nodules of rat calvaria cell at 11 day. The results were as follows : 1. At early time both periodontal ligament cells and calvaria cells in chitosan-treated group proliferated more rapidly than in non-treated control group, but chitosan-treated group of periodontal ligament cells at 9 days and calvaria cells at 12days showed lower growth rate than control group. Gingival fibroblast in chitosan-treated group had lower growth rate than in control group but the difference was not statistically significant (P< 0.01).2. Both periodontal ligament cells and calvaria cells in chitosan-treated group showed much protein synthesis than in control group at 3 days, but showed fewer than in control group at 7 days. Amount of total protein synthesis of gingival fibroblast didn't have statistically significant difference among the two groups(P< 0.01). 3. At 3 and 7 days, alkaline phosphatase activity of periodontal ligament cells and calvaria cells was increased in chitosan-treated group, but at 7 days there was not statistically significant difference among the two groups of calvaria cells (P< 0.01). Alkaline phosphatase activity of gingival fibroblast didn't have statistically significant difference among the two groups(P<0.01). 4. Mineralized nodules in chitosan-treated group of rat calvaria cells were more than in control group. In summery, chitosan had an effect on the proliferation, protein systhesis, alkaline phosphatase activity of periodontal ligament cells and calvaria cells, and facilitated the formation of bone. It is thought that these effects can be used clinically in periodontal regeneration therapy.

분자내 $\alpha$-Sulfamidoalkylation 반응을 이용한 Tetrahydroisoquinoline 유도체의 합성

김선희,공영준,이채호,Kim, Sun Hee,Kong, Youg Joon,Lee, Chai Ho 대한화학회 1999 대한화학회지 Vol.43 No.3

청년 한국인의 초역치 미각강도에 대한 성, 미각기호 및 흡연의 영향

김선희,허윤경,최재갑,Kim, Sun-Hee,Hur, Yun-Kyung,Choi, Jae-Kap 대한안면통증구강내과학회 2005 Journal of Oral Medicine and Pain Vol.30 No.2

The aim of this study was to measure the suprathreshold taste intensity for sucrose, NaCl, citric acid, and quinine HCl in Korean young people using a whole-mouth, sip-and-spit procedure, employing the method of magnitude matching. The results were analysed in terms of sex, taste preference, and smoker or nonsmoker. One hundred twenty three subjects (61 male and 62 female, mean age of 25.2$\pm$2.1 years) were included for the study. Subjects were instructed to give nonmodulus magnitude estimates to the intensities of five concentrations each of sucrose, NaCl, citric acid, and quinine HCl; distilled water; 6 loudness levels of a 1,000-Hz tone, using the same 9-point intensity scale. Each of the 21 taste stimuli and 6 auditory stimuli are presented in random order twice. The auditory function is used to assess the absolute intensity function of the subject's taste system. The results were as follows; 1. The perceived taste intensity for sucrose, NaCl, citric acid, and quinine HCl increased progressively as the concentrations of taste solutions were increased. Most of the subjects are standing within the zone of mean value $\pm$1standard deviation in their total perceived intensity score, and nobody is outside the limit of mean value - 2standard deviation. 2. There were not significant difference in total perceived intensities for sucrose, NaCl, citric acid, and quinine HCl between males and females. 3. There were not significant difference in total perceived intensities for sucrose, NaCl, citric acid, and quinine HCl according to the difference in taste preference. 4. There were not significant difference in total perceived intensities for sucrose, NaCl, citric acid, and quinine HCl between smokers and non-smokers in males.

폭두께비가 큰 각형CFT 단주의 설계식

김선희,최영환,최성모,Kim, Sun Hee,Choi, Young Whan,Choi, Sung Mo 한국강구조학회 2009 韓國鋼構造學會 論文集 Vol.21 No.5

The design standards, such as AISC-LRFD (2005) and KBC-2005, specify the maximum width-to-thickness ratio that can be used for computing the strength of the concrete-filled tube (CFT), and do not include any formula for computing the strength when the width-to-thickness ratio is over the limit. This paper proposes a strength equation for CFTs with a large width-to-thickness ratio by acknowledging the fact that the stiffened slender steel platehas substantial postbuckling strength, and that it therefore can be more economical to use it. The equation adopts the concept of effective width,which is very useful for plate analysis. By comparing the strengths of AISC2005, KBC2005, and the proposed method with the results of the experiment, where the width-to-thickness ratio was regarded as the main parameter, the applicability of the proposed method was verified. AISC(2005)나 KBC(2005)등의 기준에서는 콘크리트 충전 강관(Concrete Filled Steel Tube) 기둥의 내력산정에서 폭두께비의 제한을 두고 있으며 최대 폭두께비를 초과하는 기둥에 대해서는 설계식을 제시하지 않고 있다. 본 연구는 stiffened (양단지지) 플레이트에서는 좌굴이 발생하더라도 바로 내력저하가 발생하지 않고 상당한 양의 좌굴 후 강도를 발휘할 수 있어 폭두께비가 큰 강관을 사용하는 것이 경제적일 수 있다는 점을 착안, 유효폭 개념을 도입해서 폭두께비가 큰 각형 CFT의 강도를 계산할 수 있는 설계식을 제안하였다. AISC 2005, KBC 2005와 본 연구에서 제안한 식을, 폭두께비를 변수로 수행한 4개의 각형 CFT 기둥 실험결과와 비교하였며 제안된 설계식의 적용가능성을 확인하였다. 이에 Uy(2005), Dalin Liu(2005)는 폭두께비가 큰 단주 CFT에 한에서 선행 연구된 실험데이타를 근거로 제안 설계식을 단순적용 하였다. 폭두께비가 초과된 각형CFT 단주를 검토 대상기본으로 1. 용접 조립된 정사각형 단면 2. 모살용접된 정사각형 단면 (b/t 60mm. 80mm, 100mm) 3. 한 폭면의 폭두께비가 초과하는 직사각형단면의 (b/t 45.5) 실험체를 선정하여 제안식의 타당성을 검토해 보고자 한다.