TiC(111) 단결정의 전자 특성에 관한 연구

邊大鉉,閔恒基 弘益大學校 科學技術硏究所 1992 科學技術硏究論文集 Vol.2 No.-

Clean single crystal of Titanium Carbide[TiC(111)] has been studied by REELS(reflection electron energy loss spectroscopy) at room temperature for Ep(electron primary energy) between 100 and 450 eV in UHV system. Oxygen adsorption were used to invesgate the bonding strength. Temperature REELS were also measured. Loss peaks are compared with the existence band structure and DOS(density of states) calculated from several authors.

舶用 디이젤機關의 自動調速制御에 關한 解析

崔亢奎,金泰起 관동대학교 1972 關大論文集 Vol.1 No.1

Lately it has been deeply marked that the Hydro Speed Governer turns up an important and outstanding appearence as an automatic controlling system in the field of marine diesel engine. In the past it was mainly adopted the mechanical governer for that function, but it has brought remarkable improvement to the technique of analysis due to the application with modern electronic computer today. It looks very hard project to analyze the Hydro Speed Governing System of engine, however, it is possible to seek for the method of measuring the approximate Value of Transient Response if certain appropriate assumption and hypotheses set up. In this thesis, the device of Hydro-Speed Governing for marine diesel engine is aimly studied. Particularly on the fishering marine diesel engine installed with the C.P.P.- Controlable pitch propeller-, the relationship of Reference Input and Controlled Value, the Steady State operation and the Transient Response on the relationship of the Disturbance and Control System are apparently investigated over and analyzed of the general coefficients by the theoretical computation and experimental method. As the program for the remote control and automation of ship got into request of rapid development, but it requires more improvement on it until approaching to standard available. Hydro Speed Governer posses a sufficient power with out-put and wide range of response, isochronous character, therefore, this is precisely capable on a definite speed running no matter of disturbance. In this treatise, the speed governer manufactured by American Woodward Co.was adopted for the material, with which the ships hull, engine and speed governer were analyszed in trinity. In the first chapter, there investigated over the Steady State Operation and Transient Response on the hull and engine. The second chapter contains over the investigation of Stability through general system by Disturbance with the Speed Governer installed on board.

SDS-Polyacrylamide gel 電氣泳動에 의한 누에의 發育段階別 血蛋白質의 變化

孫興大 건국대학교 1986 論文集 Vol.22 No.1

This experiments were carried out to study changes of haemolymph proteins during development of silkworm, Bombyx mori by SDS-polyacrylamide gel electrophoresis. The results obtained were follows; 1. Bands of haemolymph proteins seperated during the metamorphosis of silkworm showed 20 bands and those molecular weights ranged from 12,800 to 106,000 daltons. 2. Major bands (7 and 15) were changed quantitatively, band 7 showed predominant levels from the middle 5th instar to the middle pupa stage, band 15 was leached the maximum levels at spining and then significantly decreased on prepupa stage, those molecular weights were determined to be 27,000 and 79,000 daltons respectively. 3. Female specific proteins of band 17 and 18 (mol. wt. 102,000 and 102,500 daltons) showed from the 1st day after pupation. 4. Concentration of low molecular weight proteins (mol. wt. 16,300∼18,500 daltons) at adult stage were increased. 5. In conclusion, it was suggested that the major haemolymph proteins in silkworm should be utilized to form tissues of pupa and adult, female specific proteins involved in the egg formation.

Late Bronze and Iron Age Female Figurines Found in Palestine

강대흥 聖潔大學校 聖潔神學硏究所 1997 聖潔神學硏究 Vol.2 No.-

AbstractFemale terracotta figurines have been found most LBA and the Iron Age sites ever excavated. The exact identity of the figurines seems to be unestablished, but it has been suggested that they may have represented the Canaanite goddesses of fertility, Asherah, Anat or Astarte, and that the Iron Age villagers of the highlands probably worshipped a combination of all three, gathered under the generic name Asherah. The Hebrew Bible and epigraphical evidence such as Kuntillet Ajrud and Khirbet el-Qom inscriptions, and archaeological evidence testify that Asherah as the goddess or the asherah as cultic symbol was acceptable in early Israelite society in its cultic activities. This evidence also indicates the cultic artifactual continuity between LBA and the Iron Age.

The Late Bronze and the Iron Age Bull Figurines in Palestine

강대흥 聖潔大學校 聖潔神學硏究所 1996 聖潔神學硏究 Vol.1 No.-

충청지방에서 발생한 한국형출혈열 54예의 임상적 고찰

이종대,조항복,박붕연,심우익,신영태,김선영 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.2

In Dae Jeon Eul-Ji General Hospital, activated since 1581, 54 patients with Korean Hemorrhagic Fever Who were all positive for Korea antigen were observed from January, 1981 to December, 1984. Epidemiology, clinical features, laboratory findings, complications and clinical course in Korean Hemorrhagic Fever were analyzed. The results were as follows: 1. The most prevalent area was OK-Chun Kun. 2. The peak incidence of age was fifth decade and male to female ratio was 2:1. 3. The peak incidence was November to December. 4. The most frequent symptomes were epigastric pain, nausea and vomiting and followed by hemsturia. 5. Conservative treatment was done and hemodialysis was performed in 19 patients without death.

만선신부전 환자에서 관상동맥조영술 소견에 관한 연구

한대희,김성구,박상호,김성한,조원영,방덕원,조윤행,정의룡,은영근,권영구 순천향의학연구소 2003 Journal of Soonchunhyang Medical Science Vol.9 No.1

Background : Patients with chronic renal fialure have a substantially elevated risk of death from cardiovascular diseases than do the general population. the patients with chronic renal failure are at significantly increased freqeuncy of hypertension, hyperlipidemia, and diabetes mellitus which are known to the risk factors of the coronary artery diseases, and the prevalence of the coronary artery diseases in chronic renal failure patients is highly associated with the hemodynamic disorder and metabolic abnormalities. therefore we expected that the coronary angiographic findings in patients with chronic renal failure should be different from the general population (control groups) and investigated the risk factors contributing to coronary artery diseases. Method : we have retrospectively compared the coronary angiographic findings of 44 patients with chronic renal failure on hemodialysis with that of 88 patients in the general population and investigated the factors contributing to the development and acceleration of coronary artery diseases in patients with chronic renal failure Result : Hypertension and diabetes mellitus which is risk factors for coronary artery disease is significantly increased in patients with chronic renal failure, in coronary angiographic finding the severity of the lesion is worse. the incidence of PCI or CABG of patients with chronic renal failure is more than that of control group but statistically no difference between patients with chronic renal failure and control group. the sex, the duration of disease, the duration of dialysis, serum creatinine in patients with chronic renal failure have no correlation to the prevalence of coronary artery disease and severity of lesion. hyperglycemic patients with chronic renal failure have high incidence of coronary artery disease and are worse in the severity of lesion Conclusions : There is significantly increased the pevalence and severity of involving multiple coronary artery diseses in hyperglycemic patients with CRF.

製造業 生産性 變化와 要因分析에 관한 硏究 : 慶南地域 製造業을 中心으로

최해범,정대철 昌原大學校 産業經濟硏究所 1995 産經硏究 Vol.12 No.-

누에 배자와 난소의 초대 배양에 있어서 세포의 분화형태

최광호,손홍대,조은숙 東亞大學校生命資源科學大學附設 農業資源硏究所 1997 農業生命資援硏究 Vol.6 No.1

곤충 세포의 초대 배양에 있어서 그 분화양상을 관찰하기 위하여 누에 배자와 난소를 초대 배양하였다. 그 결과 몇 가지 상이한 세포형이 관찰되었는데 배자 초대 배양의 분화형태는 상피형 세포와 망상조직을 형성하는 섬유상 세포가 관찰되었고, 난소에서는 주로 상피형 세포가 관찰되었다. 또한 두 조직 모두에서 거대 세포보다는 작지만 다소 큰 세포 형태가 관찰되었다. This study was carried out to investigation for differential charaterization of the cells in primary culture with insects. In the process of primary culture with embryos and larval ovaries of silkworm, Bombyx mori, three types of cells were observed. Fibroblast-like cells which formed network and epitherial-like cells migrated from embryos. But in case of ovaries, fibroblast-like cells were not found. Somewhat large cells but smaller than giant-cells were observed in the cultured embryos and ovaries.

대학수학능력시험 도입후의 고교교육 변화에 관한 연구

박병량,변영계,한대동,성병창 교육연구소 1994 敎育硏究 Vol.4 No.1

Under the current school system in which secondary schools aim at the preparation for college entrance, the college entrance examination has a crucial impact on high school education. The former college entrance examination has been accused of causing many problems in high school education such as training students, in a recital mode, by giving fragmentary knowledges and skills picked up by teachers largely for the college entrance emanination. Under the examination system students were not recommended either in school or at home to pursue their own interests and concerns which are supposed to enhance higher order thinking including creativity. In order to reform this change-resisting high school education a new type of college entrance examination called College Scholastic Aptitude Test (CSAT, hereafter) replaced the former one in 1990 in the worldwide tide of educational reform toward the quality education. This study is to examine whether and/or to what extent the newly introduced CSAT has brougght changes to high school education. This study began with two concrete research problems. First, to what degree did the CSAT affect high school students particularly in the areas of attitudes toward school, classroom learning and instruction, and study habits? This refers to personal effects separated from school education. Second, to what extent did the CSAT make changes in high school education? This refers to institutional effects. As a survey, this study collected questionnaire data from 1,600 male and female high school third graders from 33 high schools locatedin Pusan City and its surrounding KyungNam-Do province. The CSAT was firstly introduced in 1990 when the survey respondents were then high school freshmen. The sample method is a systematic cluster random sample. After schools had been randomly selected about 60 students(2 classes) were sampled from each school. The questionnaire consisted of questions asking largely whether any changes were made in the areas such as individual student's studying strategies and their perceptions of schooling. The students' responses were analyzed according to concrete research problems using appropriate statistical methods. The research results are summarized as follows. First, according to students' responses they evaluated that CSAT was somewhat successful in measuring higher order thinking and somewhat conducive to lessening social problems cuased by excessively competitive high-cost private lessons. The new exam, however, unexpectedly did not have affirmative effects on such areas as: undesirable operation of high school; measurement of learning ability; selection of college qualifiers; and test item difficulty and discrimination. Second, the effects of CSAT on school-based tests were found to be both slightly positive and negative. For the positive side of the effects, the test content was not confined to textbooks but taken either from other non-text sources or from what was taught in classrooms beside textbooks; in solving the test questions not only correct answers were not required but also the problem-solving processess were also emphasized in schools. In following areas, however, there were almost no changes made: the dominance of multiple-choice test items; anxiety of testers; the utilization of test results for own learning improvement; and the frequent school testing. Third, since the introduction of CSAT there have been almost no improvements in school organizational practices, management, and climates such as; extracurricular activities, communications with teachers, guidance and discipline, teachers' expectations of students, grouping of students according to ability and talent, and friendship among classmates. One exception was that classroom climate has become somewhat open and democratic than before. Fourth, with regard to classroom activities some improvements have been detected. The classroom instruction has been somewhat changed into one emphasizing higher order thinking. It was revealed through teachers' efforts to employ new teaching methods and to carry out curriculum in a regular basis, to try to upgrade expectations of students, and to make classroom learning more explorative. On the other hand, in other areas of classroom activities it was hard to find any noticeable improvements. Finally, it was the area of individual student's studying methods and attitudes that the most noticeable changes were found since the introduction of CSAT. To mention some of them, the dependency on private lessons and private academic institutes was much lessened; the learning materials were varied beside school textbooks; the students' autonomy has been increased in the area of learning need and motivations, studying strategy from memorizing to understanding, and selecting educational or occupational careers based on one's own character and talent. As a result, the introduction of CSAT seems to give student more confidence in studying and learning. Compared to these changes in individual-based studying attitudes, perceptions and learning methods connected to schooling did not change noticeably. This contrasting finding is in a sense a main point of this study. All in all, and in short, the introduction of the new College Scholastic Aptitude Test (CSAT) were somewhat effective in changing individual students' studying or learning attitudes, methods, and strategies in preparation for college entrance, but it was found to be unexpectedly ineffective in improving institutionally school organizational practices, instructional methods, guidance and disciplines, curricular implementation, and other school management and operations. This result reminds us a fact that and educational policy could not be easily rooted in the practical soil.