인터넷을 이용한 원격교육 코스웨어의 설계 및 구현

오종만,이상정 순천향대학교 부설 산업기술연구소 1998 순천향 산업기술연구소논문집 Vol.4 No.1

Presently, there are a lot of courseware and CAI programs, and they have used in elementary school. However, courseware which improves the learning capability of students has been developed rarely. Irrespective of time and space of learning, well developed courseware should ba able to communicate with a learner bidirectionally and to provide problem-solving capability. In this study, distance education theory and its educational effects are analyzed. And the courseware which communities with students on WWW environment is developed. The astronomical subjects, especially focusing on planets, is chosen for the content of the courseware. By applying this courseware to the students through internet, the courseware could realize bidirectional communications with distant education capability and the students could develop problem-solving capability.

소요동력 절감을 위한 트랙터용 로타리 커버의 개발

오종진,김기대,이현동,김찬수,김성환,나건영 충남대학교 농업과학연구소 2002 농업과학연구 Vol.29 No.2

본 연구에서는 로타리 경운작업시 흙 부착이 가장 많이 되고 소요동력에 큰 영향을 미치는 로타리 커버 내측에 흙이 부착되는 것을 방지하여 경운 소요동력의 절감에 기여할 수 있는 로타리 커버를 개발하는데 목적이 있으며, 그 구체적인 연구결과는 다음과 같다. 1. 본 연구의 수행을 위하여 트랙터의 로타리 경운소요동력을 측정하고자 트랙터 PTO축과 로타리 동력 입력축을 연결하는 PTO 동력 전달축을 이용하여 로타리 경운 소요동력 측정장치를 설계, 제작하였다. 2. 로타리에 장착한 흙부착 방지장치의 재질로는 스테인리스 스틸, 고무, PE 등을 사용하였다. 흙부착 방지장치 장착 로타리를 이용하여 로타리 경운시험을 통한 경운 소요동력을 측정한 결과 평균 일반 로타리는 52.18ps, 스테인리스 스틸재질 장착 로타리는 52.44ps, 고무재질 장착 로타리는 49.01ps, 그리고 PE재질 장착 로타리는 46.34ps의 소요동력을 나타냈다. 3. 흙부착 방지장치 장착 로타리를 이용하여 로타리 경운시험 후 부착된 흙의 양을 조사한 결과 평균 일반 로타리는 5.6㎏, 스테인리스 스틸재질 장찰 로타리는 5.7㎏, 고무재질 장착 로타리는 3.1㎏, 그리고 PE재질 장착 로타리는 2.7㎏으로 나타났다. 4. 실험결과를 토대로 유의수준 5%의 모평균 차에 의한 검정으로 분석해본 결과 스테인리스 스틸재질의 경우 흙부착 방지효과가 없는 것으로 나타났으며, 고무와 PE재질의 경우에 방지 효과가 있는 것으로 나타났다. 그 중 PE 재질이 소요동력과 흙부착 방지에 각각 11%, 52%의 감소효과가 있어 소요동력 감소 및 흙부착 방지 효과가 탁월한 것으로 나타났다. This study aims at investigating the realities of tractor rotary tilling and paving operations performed by farm families in the central part of the country, measuring the power requirement so as to find the energy-saving factors for tractor rotary tilling, and designing a device to prevent soil adherence to the inside of the rotary cover-this part is the most subject to soil adherence and affects the power requirement. As a result of rotary tilling tests using rotaries equipped with a soil adherence preventer, the power requirement values were measured to be 52.18, 52.44, 49.01 and 46.34 PS for general, stainless steel, rubber and PE rotaries, and as a results of measurement of the quantities of the sod adhered to rotaries after their tilling tests, on the average, the quantities were measured to be 5.6, 5.7, 3.1 and 2.7㎏ for general, stainless steel, rubber and PE rotaries, respectively. The PE rotary cover reduced the power requirement and soil adherence by 11 and 52%, respectively.

갑상선기능항진증과 원발성항인지질항체증후군에 동반된 무도병 환자 1례

박종원,김동현,박태환,권오상 대한신경과학회 1998 대한신경과학회지 Vol.16 No.2

기초과학 실험에 관한 학습자료 개발 : 4·5·6학년 새 자연과 교육 과정 4th·5th·6th grade new elementary school science curri culum

오상철,김영호,현종익 濟州敎育大學 科學敎育硏究所 1983 科學敎育硏究誌 Vol.7 No.-

This is a study to develop the obervations and experimental materials for the elementary school 4th.5th.6th grade science curriculum that are carried on effect from this year. The materials which teachers do and the teachers and students can make, by themselves, are as follows: 1) In the field of biology for 4th.5th and 6th grade, 11 kinds of plant observating materials were cultivated. 2) In physics field of sixth units in the text book for 4th.5th and 6th grade, 10 kinds of implements were developed: electric circuit, moving of heat, expansion of heat and body, solute, movement of Earth and Moon, eaergy of Water and Wind.

간척지에서 옥수수 나방류 해충 3종의 발생소장

이휘종,최원영,김상열,서종호,황정동,오성환,정진교,김주일,구현나,김길하 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2

Occurrence of three troublesome lepidopterous pests, Ostrinia furnacalis, Helicoverpa armigera and Pseudaletia separata in corn cultivation of the reclaimed land were recorded using sex pheromone traps from 2012 to 2014. In case of O. furnacalis adult, two generations were observed in a year and its occurrence pattern was very regular. The 1st generation showed the highest occurrence in late May-early June and the 2nd generation was in late July-early August. On the other hand, H. armigera occurred at least three times a year but its occurrence was somewhat irregular. H. armigera adult showed the highest occurrence in mid May, late June, early August, respectively in 2012 but their occurrence patterns of the 2nd and 3rd generations were varied in 2013 and 2014. In case of P. separata, a few number of adult were captured during the survey period, indicating few number of P. separata migrated from China. Based on the control effect of O. furnacalis by Etofenprox and Carbofuranin 2012, June 26 treatment showed the highest control rate with 96.8% for Etofenprox, 85.8% for Carbofuran, respectively. Late treatment at June 19 and June 26 significantly decreased the control rate of O. furnacalis and June 26 treatment showed the lowest control rate of 1.9% for Etofenprox. 18.1% for Carbofuran, respectively.

노인의 자아존중감에 관한 연구

오경옥,박인숙,김종임,성은옥 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.1

This study was performed to investigate the level of self-esteem in the home residents and institution residents. We used a structured questionnaire in interviewing the elderly. The interviewees were composed of 200 persons in homes and 93 persons in institutions aged more than 60 and they were selected by systemic stratified random sampling. The data collecting period was from June 2, 1988. to August 10, 1988. Data were analyzed by the SPSS computer program mean, percentage, t-test, ANOVA. The results of the study were as follows: 1. The level of self-esteem of the elderly in home was very higher than that of the institutionalized elderly(p<0.000) 2. According to whether they have the monthly income(p<0.05), the level of present life satisfaction(p<0.001), the level of relationship with spouse(p<0.001) and sexual life or not(p<0.001), the level of self-esteem of the home resident group showed differences statistically. 3. According to they have the number of offsprings(p<0.05), the level of present life satisfaction (p<,0.001) and the level of present health status(p<0.01), the level of self-esteem of the institution residents group showed difference statistically.

Streptococcus oralis 의 인공치태 억제효과에 대한 연구

오종석,정성수,양규호,김선미 大韓小兒齒科學會 1999 大韓小兒齒科學會誌 Vol.26 No.1

이 연구는 치아우식증이 주요 원인균인 Streptococcus mutans의 치태형성과 증식에 대한 Streptococcus oralis의 영향을 조사하고자 하였다. 이를 위해 S.mutans와 S.oralis 혼합 배양후 형성된 치태 무게와 생균수를 측정비교하였다. 또한 치태형성과 생균수에 영향을 미치는 요소들에 대해 조사하여 다음과 같은 결과를 얻었다. 1. S.mutans와 S.oralis의 혼합배양시 S.mutans 단독배양에 비해 치태무게와 생균수가 감소되었다. 2. S.mutans 단독배양에 10 mM의 표도당을 첨가한 군은 첨가하지 않은 군보다 치태무게가 증가되었으나,S.mutans와 S.oralis의 혼합배양에 10 mM의 포도당을 첨가한 군은 첨가하지 않은 군과 차이가 없었다. 3. S.mutans 단독배양에 10 mM S.mutans와 S.oralis 10 mM의 과당을 첨가한 군도 첨가하지 않은 군보다 치태무게가 증가되었다. 4. S.mutans와 S.oralis의 혼합농도를 달리하여 배양했을때 S.oralis의 혼합농도가 높아질수록 치태무게와 생균수는 감소되었다. 5. 배양기산(6,9,12,15시간)에 따른 치태무게와 생균수는 S.mutans단독배양에 비해 S.mutans와 S.oralis혼합배양시 배양 12시간 이후 급격히 감소되었다. 6. S.mutans와 S.oralis의 혼합배양에 H₂O₂를 소비하는 Staphylococcus epidermidis를 첨가한 군은 첨가히자 않은 군보다 치태무게와 생균수가 증가되었다. 이상의 결과로 S.oralis는 S.mutans와 혼합배양시 S.mutans의 증식과 인공치태의 생성을 억제함을 알 수 있었고, 이는 S.oralis가 H₂O₂를 분비함으로써 얻어진 결과임이 시사되었다. This study was performed to evaluate the effect of Streptococcus oralis on the formation of artificial plaque and the replication of Streptococcus mutans.S.mutans was incubated alone and in the combination with S.oralis in the beaker with wires. The produced plaque weight and the viable cells of S.mutans were compared between those cultures. Various factors were studied about the effect on the formation of plaque and the replication of S.mutans. Followings are the results. 1. Lower amount of plaque was produced and fewer cells of S. mutans were replicated at the mixed culture of S. mutans and S. oralis than S. mutans alone. 2. When 10 mM glucose was added, the plaque weight was increased in the culture of S. mutans alone. But in the mixed culture of S. mutans and S. oralis, the plaque weight was not increased when 10mM of glucose was added. 3. When 10 mM fructose was added, the plaque weight was increased in culture of S. mutans alone or combined S. mutans and S. oralis. 4. In the mixed culture of S.mutans and S. oralis with different concentration, the more S.oralis exist, the less plaque and the fewer viable cells of S. mutans were observed. 5. The plaque weight and the viable cells of S.mutans were more decreased in the mixed culture of S. mutans and S. oralis than S. mutans alone after 12 hours. 6. When Staphylococcus epidermidis consuming hydrogen peroxide was added to the mixed culture of S. mutans and S. oralis, the plaque weight and the viable cells of S. mutans were increased. These results indicate that S. oralis inhibited the formation of plaque and the replication of S. mutans,and this may result from the formation of hydrogen peroxide by S. oralis.

기관골 신생증 1예

오영상,이은우,정종혁,문승원,김수현,김동한,양혁승,박정환,박경옥,강성수,이영직 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.2

Tracheobronchopathia osteoplastica is a rare disorder of unknown cause characterized by the projection of numerous bony or cartilaginous submucosal nodules into the tracheobronchial lumen with sparing of the posterior membranous portion of tracheobronchial tree. In the past, most of the cases were diagnosed as secondary finding at autopsy. Nowaday, the key component of the evaluation is flexible fiberoptic laryngoscopy and bronchoscopy, which typically demonstrates irregular spicules of subrnucosal bone and cartilage projecting into the tracheobronchial lumen and causing various degrees of airway obstruction. A 45 years old man was visited Sunchon St. Carollo hospital due to discomfort on throat. We saw several nodules just below vocal cord via laryngoscope. The computed tomography revealed multiple small calcified nqdules on trachea and both main bronchi. Pathologic finding of bronchoscopic biopsy showed abnormal proliferation of bony and cartilagious nodules in the tracheal submucosa. These fingdings were consistent with tracheobronchopathia osteoplastica. We report here on a case of tracheobronchopathia osteoplastica with review of literature.

Periodontal dressing과 치간緣下 搔爬術이 齒苔 細菌數에 미치는 影響

吳相德,卞鍾秀 慶北大學校 齒科大學 1984 慶北齒大論文集 Vol.1 No.2

The purpose of this study was to evaluate the effects of a periodontal dressing alone and in combination with subgingival curettage on the dental plapue microorganisms. For the experiment, 14 male and 2 female dental students were selected. The experiment included three stages; no dressing, dressing and subgingival curettage with dressing. Supragingival plaque-like material was collected from gingival third of buccal surface of maxillary first molar after 7 days. The samples were immediately dispersed in distilled water by shaker, serially diluted, plated, incubated and colony counting was performed. The obtain results were followings: The total weight of plaque-like material was not affected by the use of periodontal dressing, but there was a significant difference between the stage of dressing alone and subgingival curettage with dressing. When the periodontal dressing was used in combination with subgingival curettage, there was a significant decrease in total viable microorganisms and Streptococci per mg sample as compared to the control which received no dressing or subgingival curettage. percentage of Streptococci to the total aerobic microorganisms were 51.14%, 46.94%, 49.63% in each stages.

배추좀나방의 유충 기생봉 프루텔고치벌의 기생특성

오미록,김상수,박종대,백종철,김도익 順天大學校 1997 論文集 Vol.16 No.1

배추좀나방의 유충 기생봉인 프루텔고치벌의 기생특성에 대해 조사한 결과는 다음과 같다. 프루텔고치벌은 배추좀나방 유충의 모든 영기에 기생하였으나, 주로 2령과 3령충을 선호하였다. 온도별 프루텔고치벌은 배추좀나방 유충에 대한 기생율은 18, 20, 25, 30℃에서 각각 41.9, 66.0, 86.0, 68.7%였다. 프루텔고치벌은 배추좀나방 유충의 밀도가 증가함에 따라 기생수는 증가하나 그 증가율은 감소하는 Holling의 제2형(포화형) 기능반응을 나타내었다. This experiment was conducted to investigate the parasitic characteristics of Cotesia plutellae Kurdjumov, a larval parasitoid of Plutella xylostella L. Although C. plutellae parasitized all 4 instars of P. xylostella, it parasitized mainly the second and third instars. Parasitisms of C. plutellae at different temperatures were 41.9, 66.0, 86.0, and 68.7% at 18, 20, 25, and 30℃, respectively. The parasitic response curve of C. plutellae to the host density indicated Holling' type Ⅱ(saturation type) functional response: the parasitism of host by C. plutellae increased with the host density but the parasitic rate decreased.