한강 하저터널의 계측 및 수치해석에 관한 비교연구

우종태,양태선 경복대학 1998 京福論叢 Vol.2 No.-

본 연구에서는 국내 최초로 시공한 한강 하저터널의 연약대 구간의 현장계측 및 수치해석결과를 비교 분석한 것으로 정밀지반조사 결과를 토대로 재해석을 실시하고, 그 결과를 터널 시공시 측정한 현장계측치와 비교한 후 다시 역해석을 실시하여 굴착에 따른 변위량을 확인한 것으로 연구결과를 요약하면 다음과 같다. 1. 현장계측치의 내공변위량과 천단침하량이 재해석시의 값과 상당한 차이를 보이는 것은 상행선 터널은 암반, 하행선 터널은 실트를 포함한 모래층으로 재해석시의 지반조건과 많은 차이가 있는 것으로 판단된다. 2. 역해석 결과 링커트 방식으로 굴착함으로써 지반 교란 효과가 감소한 것을 알 수 있으며, 내공변위량이 천단침하량에 비해 상대적으로 2.3~2.7배 크게 발생하므로 현장계측치와 유사한 결과를 얻었다. On this study, it is tried to perform a comparative analyses of field monitoring and numerical values in the geologically soft layer of tunnel underpassing the Han River. On the basis of soil investigation, reanalysis is done and feed back analysis is taken after comparing its results with field measured values. So, the excavation settlement is confirmed The summaries of this study are as follows; 1. A remarkable difference of settlements in the crown and convergence between field and reanalysis numerical values results from the geological conditions which is consisted of rock and silty sand, respectively, in the Uppe line and Lower line. 2. In the results of feed back analysis, the excavation method by ring cut deserves reducing geological disturbance and getting the approximate results to field values which convergence settlement is 2.3~2.7 times the crown one.

초·중·고 학생들의 과학 탐구 능력 추이 분석을 위한 종단적 연구

우종옥,김범기,허명,김찬종,양일호,최관순,김태선 한국교원대학교 과학교육연구소 1999 청람과학교육연구논총 Vol.9 No.1

본 연구에서는 우리 나라 초·중·고등학교 학생들의 과학 탐구 능력에 대한 종단적 추이를 분석하였다. 1997년에는 우종옥 등(1998)이 개발한 검사지를 사용하였으며, 1999년에는 이를 일부만 수정하여 사용하였다. 조사 대상은 성별, 지역별 등을 고려하여 표집하였다. 조사된 자료는 각각 횡단적으로 분석하고, 이를 바탕으로 학생들의 과학 탐구능력이 어떻게 변해 가는지 종단적 추이를 분석하였다. 조사 결과 초등학생들의 과학 탐구 능력은 유의미한차이가 없었으나, 중·고등학생들의 과학 탐구 능력은 유의미하게 향상된 것으로 나타났다. 학교 과학 교육의 질을 과학적으로 관리하기 위해서는 교육과정이 추구하는 교육 목표의 달성이 성공적으로 이루어지고 있는지를 국가수준에서 주기적으로 측정하여 부진의 원인을 진단하고, 개선 방안을 계속 연구하여야 할 것이다. The longitudinal trend of elementary and secondary students' science process skills were investigated to monitor the progress of science learning. Science process skill test, developedin an earlier study on developing a national science process skills assessment system, was revised and administered for the study on March, 1999. Subjects were sampled nation wide according to sex and region. The results of this assessments were compared to those administered on February, 1997. The results showed little difference on science process skills among elementary school students. However, secondary students showed marked increase in science process skills. More systematic and long-term research for assessing science process skills should be planned and performed periodically to provide empirical and foundational data for educational policy making.

실리카흄을 흔입한 고강도 콘크리트 개발

홍창우,김태경,김경진,김성환,김남윤,심도식,이정호,윤청호,백민경,원치문,박제선,이주형,정경일 강원대학교 석재복합신소재제품연구센터 1996 석재연 논문집 Vol.1 No.-

콘크리트 구조물이 대형화됨에 따라 설계단면이 증대되어 상대적으로 많은 경제적 손실을 부담하게 된다. 따라서 단면을 감소시키면서도 소요의 하중에 안전한 구조물을 건설하기 위해서는 우선적으로 구조물 건설에 기초가 되는 고품질, 고내구성의 고강도 콘크리트 개발이 절실히 요구된다 본 연구에서는 일정 시멘트비 및 혼화재 비율하에서 소요의 워커빌리티가 확보되는 고강도 콘크리트를 시간과 온도의 변화에 따라 증기 양생하여, 압축, 인장, 휨강도 뿐만 아니라 파괴특성을 실험적으로 연구하였다. 시료 제작시 시멘트 입자 사이의 공극 및 불연속 영역을 충전하여 고밀도화하기 위한 콘크리트용 혼화재로 시멘트 비표면적이 상당히 작은 초미립 분말인 실리카흄을 이용하였다. 또한 AE감수제 및 고성능 유동화제를 사용하여 혼화재의 첨가에 의하여 발생될 수 있는 워커빌리티의 감소를 방지하였다. 실험결과에 의하면 일정 양생 지속 시간하에서 온도의 증가에 따라 콘크리트의 압축, 인장 및 휨강도가 전반적으로 증가하였다. 동일하게 일정 온도하에서 양생 지속시간이 커짐에 따라 강도들이 증가됨을 알 수 있었다. 따라서 상대적으로 높은 온도와 긴 지속 양생 조건하에서 파괴에 대한 저항력이 크게 나타났다. The compressible, tensible, and flexibleresistance of the high strength concrete is analyzed by the experimentation in the present study. For the test, we cure several samples with the silica fume as a mixture being become dense the spaces between the particle of cement under the variation of both the temperature and the curing-interval. Then, the superplasticizer and the ezcon are also used to satisfy the required workability for construction. The compressible, tensible, and flexible resistances to a stress are increased as increasing the temperature and the time interval for the curing. Therefore it is concluded that the overal fractural and mechanical properties is improved by mixing the silica fume into the cement.

Design of T-S(Takagi-Sugeno) Fuzzy Control Systems Under the Bound on the Output Energy

Kim, Kwang-Tae,Joh, Joog-Seon,Kwon, Woo-Hyen Institute of Control 1999 Transaction on control, automation and systems eng Vol.1 No.1

This paper presents a new T-S(Tae-Sugeno) fuzzy controller design method satisfying the output energy bound. Maximum output energy via a quadratic Lyapunov function to obtain the bound on output energy is derived. LMI(Linear Matrix Inequality) problems which satisfy an output energy bound for both of the continuous-time and discrete-time T-S fuzzy control system are also derived. Solving these LMIs simultaneously, we find a common symmetric positive definite matrix P which guarantees the global asymptotic stability of the system and stable feedback gains K's satisfying the output energy bound. A simple example demonstrates validity of the proposed design method.

유기질비료 시비량에 따른 오미자 묘목의 초기 생육특성에 관한 연구

이경아,박태호,박성용,김도현,오문국,김민수,안태진,이상원,김영국,안영섭,박충범,차선우,송범헌 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.1

This study was carried out to have basic and applied informations to find the optimum nitrogen fertilization level for organic cultivation and to investigate early growth characteristics of Schizandra chinensis Baillon. Different application levels of the organic fertilizer were based on the recommended rate of N fertilizer. Five different levels of the organic fertilizer were applied to S. chinensis and early growth responses such as the length of vine, the diameter of vine, the number of leaves, and the number of branches were investigated. Lengths of main and total vines were shown longer at the level of 1.0 time organic fertilizer than those at others. The vine length at early growth was the highest at the level of 1.0 time organic fertilizer among the treatments. Stem diameter was shown thicker level of 1.0 time organic fertilizer than others on August and September, whereas on October it was the thickest in the conventional cultivation. Number of leaf was increased higher at the level of 1.0 and 2.0 times organic fertilizer than that in the compared to conventional. The number of branches was appeared the lowest at the level of 1.0 time organic fertilizer at early growth, however they were increased through progressing their growth stages. They were not significantly difference among the treatments except for the level of 2.0 times organic fertilizer. Based on the research results, the growth of S. chinensis was commonly higher at the level of 1.0 time organic fertilizer compared to other treatments.

Melt spinning 법으로 제조된 Ti-Ni-Cu 합금리본의 상변태거동 및 형상기억특성

金載勳,崔美善,李喜佑,金泰俊,김연욱,南泰鉉 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.7

Phase transformation behavior and shape memory characteristics of Ti-Ni-Cu alloy ribbons fabricated by melt spinning have been investigated by means of differential scanning calorimetry, X-ray diffraction, optical microscopy and thermal cycling tests under constant load. With increasing linear velocity and decreasing ejection pressure, transformation start temperatures of ribbons decreased and stability of the B19 martensite was lowered, comparing to those of alloys fabricated by conventional casting since the cooling rate increased. Only after heat treating ribbons at temperatures higher than 873 K where recrystallization occurred, the B19 martensite was observed in Ti-40Ni-10Cu alloy ribbons. Transformation elongation and hysteresis associated with the B2-B19 transformation in Ti-Ni-Cu alloy ribbons decreased with increasing Cu-content, which was attributed to the decrease in lattice deformations. Transformation elongations of ribbons were larger than those of alloys made by casting, which was closely related to a texture developed in ribbons.

최근 8년간 K지방대학병원 응급실로 내원한 치과 응급환자에 관한 임상적 연구

유재하,김종배,김태우,문선재,권혁찬,김승범 大韓顎顔面成形再建外科學會 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6

The delivery of the proper care to the emergency dental patients is more important in the aspdect of community dental service. To attain such a purpose requires the sacred duty to the training of oral and maxillofacial surgeons. This is a retrospective study on the characteristics of dental injuries and diseases in emergency patients. Ths study was based on a series of 2,649 patients treated as dental emergency patients at K country hospital of medical college, from Jan. 1, 1993, to Dec. 31, 2000. The obtained results were as follows. The trauma(71.6%) was the most frequent cause in dental emergency patients, odontogenic infection and oral hemorrhage were next in order of frequency. The primary interdental wiring and transpalatal wiring were frequent proper methods with rubber drainage for prevention of hemorrhage and infection in the primary care of jaw fracture. The peak incidence(45.0%) about the infection group was occurred in the pulpitis of advanced dental caries, and common treatments were the medication of antibiotics & anagesics and I&D. In the dentoalveolar hemorrhage group, a major cause was postoperative hemorrhage(57.9%) and hemostasis was obtained by pressure dressing, suture and drainage of infected wound. About TMJ disorder group, the peak incidence was showed in the post-traumatic myofascial pain dysfunction syndrome and its primary care was medications(anagesics & sedatives). In the other groups, various irritable specific pains were complained, such as trigeminal neuralgia-form pain, acute stomatitis, chemical burn, terminal stage neuritis of head & nech cancer and their primary care methods were various individually. For the rapid and correct care of the emergency dental disease above, well-trained education should be presented in the intern and resident curriculum of oral & maxillofacial surgery.

한의진단명과 진단요건의 표준화 연구 III : 3차년도 연구결과 보고

최선미,양기상,최승훈,박경모,박종현,심범상,김성우,노석선,이인선,정진홍,이진용,김달래,임형호,김윤범,박성식,송태원,김종우,이승기,최윤정,신순식 한국한의학연구원 1997 한국한의학연구원논문집 Vol.3 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the third year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows : - analyzing and differentiating of epidemic febrile disease - analyzing and differentiating in accordance with the Sasang constitution medicine based on four-type recognition - differentiation of disease according to pathological changes of Chong and Ren channels - standards for diagnosis of women's disease - standards for diagnosis of children's disease - standards for diagnosis of motor and sensor disturbance (-muscle. born, joint, etc.) - standards for diagnosis of neuropsychiatric disease - standards for diagnosis of five sense organ disease - standards for diagnosis of external disease The indivisual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name, notion of diagnosis pattern, index of differentiation of symptoms and signs, the main point of diagnosis, analysis of diagnosis pattern, discrimination of diagnosis pattern, prognosis, a way of curing a disease, prescription, herbs in common use, disease appearing the diagnosis pattern, documents. The standards for diagnosis of each disease was arranged by the diagnostic requirements in the following order : another name, notion of disease, the main point of diagnosis, analyzing and differentiating of disease, analysis of disease, discrimination of disease, prognosis, a way of curing and prescription of disease, disease in western medicine appearing the disease in oriental medicine, documents.

정신분열병 환자를 위한 인지재활훈련 프로그램의 개발 : Korean-Cognitive Differentiation Program 한국형 인지분화훈련 프로그램

현명호,안석균,이만홍,조현상,최충식,이연희,송선미,유계준,김장우,김태용,이희상 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.2

연구배경 : 정신분열병 환자들은 인지장애를 보이는바, 저자들은 이들을 대상으로 한국형 인지분화훈련 프로그램을 개발하여 정신분열병 환자들을 대상으로 인지재활훈련을 실시한 후 환자들의 인지기능, 정신병리 및 문제해결기술에 미치는 효과를 조사하였다. 방 법 : 28명의 정신분열병 환자를 훈련군(n=14)과 대조군(n=14)으로 나누어 훈련군에게 한국형 인지분화훈련 프로그램을 1회 60분씩, 주당 2회씩, 11주간 총 22회를 실시하였다. 환자들의 인지기능은 K-WAIS의 산수, 빠진곳찾기, 어휘, 공통점찾기 소검사로 측정하였고 정신병리는 양성 및 음성증상 척도로 측정하였으며 문제해결기술은 사회문제해결척도로 평가하였다. 인지재활훈련의 효과를 평가하기 위해 훈련 전후의 인지기능, 정신병리 및 문제해결기술의 변화를 종속변수로 하고 훈련 유무를 독립변수로 하여 반복측정에 의한 변량분석으로 자료를 분석하였다. 결 과 : 한국형 인지분화훈련이 시간에 따른 인지기능검사 중 산수 소검사, 문제해결기술 중 시회문제해결척도의 전체 점수와 문제해결기술 소척도의 점수의 변화에 유의한 영향을 미쳤으나, 시각적 주의력, 개념화 능력 및 정신병리의 점수의 변화에 유의한 영향을 미치지 않았다. 결 론 : 한국형 인지분화훈련 프로그램은 정신분열병 환자에서 청각적 주의력 및 문제해결기술의 호전을 꾀할 가능성이 있음을 시사한다. Objectives : The purpose of this study was to investigate the effects of cognitive differentiation training program- Korean version(a training program of attention and conceptual abilities) on cognitive function, psychopathology and problem solving skills in patients with schizophrenia. Methods : A total of patients diagnosed as schizophrenia using DSM-Ⅳ were randomly assigned to 2 groups. The training group went through a total of 22 sessions of cognitive differentiation training(60 min/ session×2 sessions/wk×11 wks). The attention-placebo control group received psychoeducation program during the same period. Arithmetic, vocabulary, similarities, picture completion of Wechsler Adult Intelligence Scale-Korean version, Positive and Negative Syndrome Scale, and Social Problem Solving Scales were administered to all patients, both before and after the training program. Results : In the arithmetic scores(F=6.35, af=1, p=0.018) of Wechsler Adult Intelligence Scale-Korean version, and total scores(F=6.35, af=1, p=0.018) and problem solving skill scale scores(F=4.88, af=1, p=0.036) of social problem solving scale, interaction effects of training was significant. Conclusion : Our findings suggest that cognitive differentiation training program-Korean version is effective on improving auditory attention and problem solving skills in patients with schizophrenia.

Prediction of Rice Embryo Proteins using EST-Databases

Sun-Hee Woo,Seung-Woo Cho,Tae-Seon Kim,Keun-Yook Chung,Yong-Gu Cho,Hong-Sig Kim,Beom-Heon Song,Chul-Won Lee,Seung-Keun Jong 한국육종학회 2008 한국육종학회지 Vol.40 No.1

An attempt was made to link rice embryo proteins to DNA sequences and to understand their functions. One hundred of the 700 spots detected on the embryo 2-DE gels were microsequenced. Of these, 28% of the embryo proteins were matched to DNA sequences with known functions, but 72% of the proteins were unknown in functions as previously reported (Woo et al. 2002). In addition, twenty-four protein spots with 100% of homology and nine with over 80% were matched to ESTs (expressed sequence tags) after expanding the amino acid sequences of the protein spots by Database searches using the available rice EST databases at the NCBI (http://www/ncbi.nlm.nih.gov/) and DDBJ (http://www.ddbj.nig.ac.jp/). The chromosomal location of some proteins were also obtained from the rice genetic map provided by Japanese Rice Genome Research Program (http://rgp.dna.affrc.go.jp). The DNA sequence databases including EST have been reported for rice (Oryza sativa L.) now provides whole or partial gene sequence, and recent advances in protein characterization allow the linking proteins to DNA sequences in the functional analysis. This work shows that proteome analysis could be a useful tool strategy to link sequence information and to functional genomics.