國民學校 敎師 自然 및 算數科 再敎育의 分析的 硏究 : Based on the Choong Buk Province

黃秉德,梁仁煥,崔炳文,趙璇衡,朴根生 淸州大學校 科學敎育硏究所 1977 淸州大學校 科學敎育硏究所 Vol.1 No.-

Our college has retrained many primary school teachers during 5 years is science, and during 4 years in case of mathematics. Many problems are found out in the process of retraining them in our school. This study is aimed to research the actual condition of the retraining and to find out the way to improvement from the problems. However, Our study will have some limitation as follows: (1) For our study, only 300 teachers are chosen from the total 1,869 attended at our college(Cheong Ju Teachers College) in 1976. (2) The administrational and financial affairs are analyzed only according to the Ministry of Education with UNICEF funds from 1972 to 1976, and (3) We didn't take any consideration of Ministry of Education Project in Suggesting the way of improvement. Following are some problems found in our study: 1) Throughout the nation, only 23% of primary school teachers were taught in science and mathematice reservice work during the 5 years, and it can be said that it takes about 20 years to retrained all the teachers without consideration of natural increase of teachers. 2) The proportion of selecting primary school teachers in all the country for this reservice training is extreme, for example, Jeju Province is 57.9%, Seoul 17.7%. 3) The proportion of woman teachers selected in Choong Buk primary school is only 3.5% of total woman teachers, who takes 32% of total Choong Buk primary teachers during 5 years. Therefore, it is said that the number is very little. 4) Some teachers have been reselected in the reservice training. In case of the Choong Buk Board of Education. the 6% of teachers selected once were reselected for 5 years. 5) When the test are enforced on attendants to get data before the reservice training. We could find that they didn't understand the basic concept of science except a grade under their charge. 6) In the process of inquiry study, they didn't know even the scientific terms of expectation and reasoning. 7) After 60 hours of reservice training course. We tested them about understanding of the contents of text, and their marks are from 10 to 100. the marks show large individual difference among them. 8) Some teachers may have neither teaching ability nor knowledge of the basic concept, that is 11.3% of total attendants are less than 30 marks in mathematics test. 9) It is too very large work to study reservice text during the 60 hours. 10) There are many difficult signs in the mathematics reservice text having no connection with the actual primary school mathematics text book. 11) In the reservice text of science, there are omitted the method of teaching materials production, the model of inquiry learning, and the evaluation method. 12) From the analysis of questionary response for finding the actual condition of administration of teaching materials, We could find out 15% of primary schools in Choong Buk Province do almost not prepare teaching materials, and 15% of its never put them to practical use. Therefore, We could say that total 30% of them have been teaching without teaching materials. 13) The 42% of attendants in mathematics class answer that they do not understand the new mathematical signs, and 42% of them answer the shortage of hours (60 hours) to understand their reservice text book. 14) The 25% of them answer that they teach children with cramming education, and almost of them want good teachers guide books. As mentioned above, there are found many problems to be solved for reservice training of science education in our country. Some of them will be solved in our study. So We find out its and We suggest the ways solving the problems as follows: A. On the administration of reservice training. 1) The reservice training work for primary school teachers is very significant and will have to be continued. 2) It will be done in not only summer vacation but also winter one for finishing immediatly all over the country. 3) The 60 hours of science reservice training course work are very short, and the classmember of attendants will be regulated. 4) The funds for reservice operation and travelling expenses for attendants will be realized. B. On selecting the attendants 1) When the attendants are selected, there will be consideration of age, rank, term of their service, sex and academic background. 2) as far as possible, it will be selected as homogeous groups, and it will be effective to teach them with division between class teacher and nonclass teacher. 3) When select attendants are it will be taken consideration of balance between city and province for the diffusion effect and parallel development in reservice training work. 4) It must give a chance to woman as same as to man teacher according to a rule of equal select chance. 5) The principal, instructor and school inspector will be reeducated for fixing of science curriculum. C. On reservice training text book 1) The text book must reedit moderatly for 60 hours, or the time of retraining for the text book finished will be extented. In our opinion, it is to be desired that the time have to be added. 2) The difficult signs must be omitted, taking into account for the mathematics knowledge and time of education period. 3) In the science reservice training text book, it must supplement the tack for framming of inquiry teaching plan, the method for making teaching materials, and the skill for replacing of teaching materials. D. For the curriculum management of science. 1) The Governmental Company must settle the shortage of science teaching materials in primary school. 2) For the charge of the old state of teaching method, the teachers must devote themselves to teach children without miscellaneous duties. 3) The authorities concerned (for example, Ministry of Education, Teachers College, etc.) must make guide books for science teachers, and supply them to primary school teachers. 4) It must be given the chance of long period reeducation to the incompetent primary school teachers, and problem will have to be studied under the situation of educational administration.

SrTiO₃첨가에 따른 (x)BaTiO₃-(1-x)SrTiO₃의 유전적, 전기적 특성

정해덕,장동환,김덕근,홍경진,최창주 木浦大學校 工業技術硏究所 1998 工業技術硏究誌 Vol.8 No.-

In this paper, a ferroelectric material BaTiO3 was added to SrTiO3, then (x)BaTiO3-(1-x)SrTiO3(0.7≤x≤1) ceramics were fabricated with stable electrical properties in high voltage. Microstructures and electrical properties were investigated according to mixing conditions of addition material SrTiO3. As a result of the investigation of all experiments, the shrinkage was excellent in 0.9BaTioO3-0.1SrTiO3. The grain size was increased, the curie temperature was shifted low temperature. The 0.9BaTiO3-0.1SrTiO3 was appeared stable property in temperature vs. permittivity. Also, 0.9BaTiO3-0.1SrTiO3 was showed stable dielectric properties at 25~85[C]. V-I properties of specimen were observed in the temperature range of 21~143[C], were divided into three regions. the region I below 10[kV/cm] was shown Ohmic conduction, the region II from 10 to 30[kV/cm] was explained by the poole-Frenkel emission theory and the region III above 30[kV/cm] was analysed by the tunneling effect.

채용시 건강진단에서 요ㆍ천추부 단순 방사선 검사의 평가

임현술,김수군,김덕수,이현경,최대섭 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : A study was conducted for investigating the status of simple X-rays on lumbo-sacral regions at pre-employment health examination and analysing the effectiveness of simple X-rays on lumbo-sacral regions. Methods : The study data were pre-employment health examination data in a university hospital from Jan 3, 1993 through October of 1997. And, 97 newly employed workers who claimed no low back pawn at pre-employment health examination of a certain company were follow-up survey about low back pain and related factors in April, 1995 and October of 1997. The data were collected by a self-reported questionnaire and a medical examination with a rehabilitation specialist. Results : 1. Taking the simple X-rays on lumbo-sacral regions was 1,591 workers (10.5%) among 15,166 pre-employment health examination from Jan 3, 1993 through October of 1997. And yearly application rates of these X-ray tests have been significantly statistical increasing (p〈0.01). 2. The abnormal findings of simple X-rays on lumbo-sacral regions at pre-employment health examination were 40 workers. But, there was not significantly statistical difference between normal and abnormal group for the complaint rate of low back pain. 3. The number of case with symptoms of low back pain at the follow-up survey were 46, so The incidence density was 37.1 persons/ 100 person-years. And the incidence density was not significantly statistical difference between normal and abnormal group of simple X-rays on lumbo-sacral regions. 4. Through the multivariate logistic regression, significantly associated factors with low back Pain were found to be tenure(OR=0.36, 95%CI : 0.17-0.79), lifting of heavy materials (OR=5.86, 95%CI : 1.58-21.74) . Conclusion : The simple X-rays on lumbo-sacral regions at pre-employment health examination is required further research for utilizing pre-employment health examination according to above results.

수면량과 집중력의 상관관계

김병우,류지근,박우진,박계원,김미정,임지은,백대현,최재덕,최윤호,이가현,이관,김덕수 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

수면, 기억 그리고 학습의 연관성은 실제 매우 복잡하다. 많은 연구에도 불구하고 명확한 연구결과는 아직 없다. 우리는 이 연구에서 평소와는 달리 시험 전날 수면 변화 양상이 집중력에 어느 정도 영향력을 미치는지 알아보고자 하였고, 이를 이용해 효율적인 수면 관리를 할 수 있는 기초자료로 삼고자 하였다. 동국대 의대 본과 1학년생 중 지원자 30명과 본과 2학년생 10명을 대상으로 평상시 상태와 시험 직후 수면이 부족한 상태에서 각각 K-PES TEST를 실시하여 총 8항목에 걸쳐 암기력, 판단력, 단순반응의 변화정도를 검사하였다. 또 설문조사를 병행하여 결과에 영향을 미칠 수 있는 다른 인자들도 파악하였다. 수면량에 대한 부호 숫자 짝짓기(순간 판단력)을 검사한 결과, 인간의 최대 생리학적 기능은 꼭 수면부족에 의해 좌우되는 것은 아니다. 그러나, 수면감소는 피로를 증가시키고, 동기부여를 감소시키나 단, 새로운 사실을 학습하는 데에는 큰 영향을 끼치지 않는다. 즉, 수면부족으로 장시간 깨어있는 것은 정확성과 반응성을 떨어뜨린다. 흡연에 대한 부호 숫자 짝짓기(순간 판단력)을 검사한 결과, 니코틴의 수면에 대한 상호관계는 알려지지 않았고, 인간의 감정이나 의식, 인식에 영향을 주는 것으로 알고있지만, 장기적은 측면에서 흡연이나 알코올은 인식능력과 무관한 것 같다. 카페인에 대한 숫자 외우기(암기력)검사 결과, 카페인은 spacial selective attention에는 특별한 영향을 주지 않지만 지각과정이나 주의 집중에 큰 효과를 주며, 인간의 의식 수행에 긍정적인 효과를 준다. 즉 카페인은 활력, 혼란, 피로상태를 변화시키고 visual analog scales에서 휴식상태에 가까운 양상을 나타낸다. 또 48시간 동안 수면을 취하지 않은 사람에게 카페인은 집중력과 장시간의 좋은 기분을 유지하게 하였다. 그러나 규칙적, 비규칙적으로 먹는 사람간에는 인지수행력의 차이를 보이지 않으며 상용자에서는 상당한 내성이 보인다. 수면패턴에 대한 숫자 더하기(순간 판단력)검사 결과, 집중력은 수면패턴에 의해서도 영향을 받고, 수면패턴이 바뀌게 되면 순간판단력을 저하시킨다. This study was performed to evaluate relationship of sleep and attention, and to control sleep effectively. We conducted a K-PES test of 40 medical students. K-PES contains eight elements, for example, simple response, selective response, color pairing, OddEven discrimination, number addition, number-symbol matching, memory, right-tapping, left tapping. Through these, we tested changes of memory, judgement, simple response. And we conducted a questionnaire survey to exclude bias. Results are as follows. As a results of number-symbol matching test, we know that sleeplessness is not complete responsible for physiologic function for humans. But, decreased sleep increases fatigue and decreases motivation, but no influence on learning new materials. So, long term sleeplessness decreases precision and responsibility. As a results of number-symbol matching test on smoking, a relationship of nicotine and sleep is not certain. A point of view in long term period, smoking and drinking is not related cognition, even if we know that those influence mood, consciousness and cognition. As a results of memory work test on caffeine, caffeine does not influence spacial selective attention, but mainly does perception, attention and consiousness process. Namely caffeine changes energetic activities, chaos, fatigue states and shows resting state in visual analog scales In sleeplessness for 48 hours, caffeine produced attention and good mood for a long time. But, in case of cognitive process no significance shows in regular or irregular diet. Regular diet shows high resistance. As a results of number addition test on sleep patterns, seep patterns influence attention, changes of sleep patterns decrease a moment judgement.

개에서 관찰된 모기질세포종의 증례보고

조성환,손화영,김혜성,최종윤,류시윤,박배근,윤원기,홍성혁,김덕환 충남대학교 수의과대학 동물의과학연구소 2002 動物醫科學硏究誌 Vol.10 No.-

Pilomatricoma was histopathologically diagnosed in a 2.5-year-old male Alaskan malamute. The patient was referred to Chungnam National University, Veterinary Medical Teaching Hospital with solitary, firm and well-circumscribed mass at shoulder. Grossly, the mass was dome shaped to tumor like and 10 x 8 x 5㎝ in size. Some lesions had gritty or bony consistency and was chalky when sectioned Histopathologic feature included mumerous clusters of tightly arranged, basaloid cells with evenly distributed chromatin and ghost cells were characterized by a central unstained zone. The ghost cells often become calcified and osseous metaplasia was also present.

Tasmanitids from Idong and Pohang (Miocene) Formations of Korea

Duck Keun Choi(崔德根),Pil Yoon Bong(奉弼崙),Bong Kyun Kim(金鳳均) 대한지질학회 1984 지질학회지 Vol.20 No.3

TRILOBITE STUDIES IN SOUTH KOREA - RETROSPECT AND PROSPECT

( Duck Keun Choi ) 한국고생물학회 1992 N/A Vol.1 No.-

THE CAMBRIAN-ORDOVICIAN BOUNDARY IN THE TAEBAEGSAN REGION, KOREA : A REVIEW

Duck Keun CHOI(최덕근),Ha-Young LEE(이하영),Dong Hee KIM(김동희) 한국고생물학회 1996 고생물학회지 Vol.12 No.1

PALYNOLOGY OF THE JINJU FORMATION (LOWER CRETACEOUS), WAEGWAN-DAEGU AND JINJU AREAS, KOREA

DUCK KEUN CHOI(최덕근),JONG BOK PARK(박종복) 한국고생물학회 1987 고생물학회지 Vol.3 No.1

NEOGENE PALYNOMORPHS FROM LIGNITE BEDS OF BUGPYEONG AND YEONGHAE AREAS, KOREA

DUCK KEUN CHOI(최덕근),PIL YOON BONG(봉필윤) 한국고생물학회 1986 고생물학회지 Vol.2 No.1