鳥嶺山 自然休養林地域의 森林植生에 關한 硏究

辛壽哲,鄭玧洙 건국대학교 자연과학연구소 1999 建國自然科學硏究誌 Vol.10 No.1

To investigate the structure of the forest vegetation of Mt. Joryong recreation forest area in Chungbuk district, fourteen plots of natural forest and two plots of artificial forest were set up. As the result of classification and ordination analysis the study area was divided into four proups. which were Larix leptolepis community, Quercus mongolitca community. Quercus ariena community, Pinus rigida community. species diversity indices range of each communitiy was 0.7902~1.4192, Quercus aliena community showed the highest value and Larix leptolepis community showed the lowest value among the communities. The similarity indices range of each community was 25.77~57.45%, between Quercus monglica community and Quercus aliena community showed the highest value while Quercus aliena community and Larix leptolepis community showed the lowest value among the communities. The comparision of site quality index of Mt. Joryong recreation forest area with nationwide, Larix leptolepis, Pinus densiflora, Quercus mongolica, and Qugrcus altena estimated average site quality index while Pinus rigida showed below the average of nationwide was caused by high stem dencity.

전송율 향상을 위한 다단계 상호연결망

신용태,이철희,조민수 崇實大學校 生産技術硏究所 1996 論文集 Vol.26 No.1

This paper proposed two Multi-statge Interconnection Network(MIN) that had multiple outlet to improve throughput. These proposed MINS were made of Clos MIN, well known Non-blocking MIN. These proposed MINs were called ECFS(Expanded Clos Switch Fabric) adn TCSF(Tandem Clos Switch Fabric). ECFS was consist of expanded number of switchs for multiple oulet. TCSF was consist of serial Clos MIN for multiple outlet. Performance evaluation of these proposed MINs was calculated arrival probability of packet through the MIN. In teh result, these proposed MINs with multiple outlet had higher throughput than existed MIN with single outlet. We know the fact that as the outlet of MIN increase, throughput of MIN increase.

小白山 森林構造에 關한 硏究(Ⅰ) : 海拔高에 따른 泉洞溪谷의 植生構造를 中心으로

辛壽哲,金昌浩,朴敎秀 동국대학교 생명자원과학대학 연습림 1993 연습림논문집 Vol.- No.3

Cheon­Dong valley forest, bearing a cool­temperature, broadleaf­deciduous forest zone, ranging from 500m to 1200m by elevation in Mt. Sobeak National Park area was investigated for forest vegetation structure research. Ten plots of 1000㎡ size set up by the clumped sampling method and Classification and Polar Ordination were applied for vegetation structure analysis by environmental gradient the flora of the vascular plants collected from this investigated area were 32 families, 35 genera, 42 species and 3 varieties. Ranging from 500m to 1200m to elevation, Number of species, Number of individuals and Species diversity showed their highest values at 900m elevation respectively. And with increasing altitude those all values showed a tendency decreasing gradually. According to the Importance Value the leading dominant tree species in canopy layer were Styrax obassia, Quercus variabilis, Q. aliena, Carpinus codata while Lindera obtusiloba, Lespedeza bicolor were in understory at low elevation, ranging from 500m to 900m. Ant at high elevation area, ranging from 900m to 1200m, the leading dominant species were Q. monglica, Q. acutisima, Betula platyphylla var. japonica, Cornus controversa, Acer pseudo­sieboldianum, Fraxinus mandshurica, n canopy layer while Deuzia paviflora, Pinus laxiflora were in understory. The result from Classification and Polar Ordination analysis, they showed similarity that the forest vegetation of Sobeak valley area was classified into two sub­communities, one is Q. mongolica, Styrux obassia―Styrux obassia, Q. aliena, Carpinus codata―Styrux obassia, Lespedeza bicolor community and the other is Q. variabilia, Q. acutisima―Acer mono, Fruxinus rhynchophylla―Deutzia parviflora, Lindera obtusiloba community and the major environmental factors were considered to be the difference of altitude and the conditions of soil pH. The successional trends of tree species will be from Q. variabilis, Q. acutisima through Acer pseudo­sieboldianum, Fraxinus rhynchophylla to Carpinus codata at high elevation area, ranging from 900m to 1200m, and from Q. mongolica, Styrax obassia through Styrax obassia, Q aliena to Carpinus codata at low elevation area, ranging from 500m to 900m.

서울시 도시산림의 식생구조 및 변동에 관한 연구

신수철,윤상욱,이민순 동국대학교 생명자원과학대학 연습림 2000 연습림논문집 Vol.- No.6

The total number of woody plants species appeared in the investgated area were 31 families 45 genus 79 species including 8 varieties and 1 fomular. Importance values(Ⅳ) of the tree species of forest area in Seoul, Quercus mongolica showed the highest Ⅳ and Robinia pseudoacacia, Prunus sargetii, Pinus densiflora, Quercus acutissima, Sorbus alniflora were dominant species at conopy layer. Importance values of major tree species in relation to topographic feature, Quercus mongolica was higher in northern aspect than in southern aspect and at valley topography was higher than at ridge topography while Robinia pseudoacacia showed higher in southern aspect than in northern aspect and at ridge topography was higher than at valley topography, and Pinus densiflora showed high Ⅳ at ridge topography of southern aspect. As the result of COA Ordination analysis for fifty three plots belong to twenty five survey site of forest area in Seoul were divided into four vegetation communities which were Quercus mongolica-Prunus sargetii community, Quercus mongolica community, Robinia pseudoacacia community, Quercus variabilis community. Shanon’s species diversity indicies range of each community was 1.3822∼1.1189, and Quercus monglica community showed the highest species diversity and Quercus monglica - Prunus sargetii community showd the lowest.

고정화 균체를 이용한 2,5-Diketo-Gluconic Acid 발효생산

신봉수,신철수 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.6

고정화 균체를 이용하여 비타민C 합성의 주요 중간체인 2,5-diketo-gluconic acid (2,5-DKG)를 효율적으로 생산하기 위하여 glucose로부터 2,5-DKG로의 발효반응 특성의 분석 및 효율적인 고정화균체의 발효공정을 개발하고자 하였다. Ca-alginate로 고정화된 균체를 2,5-DKG 생산에 이용할 때 고정화 담체내로의 기질의 diffusion 저해가 관찰되었고, 이러한 현상은 담체의 지름이 2 mm에서 다소 완화되어 가장 높은 2,5-DKG 수율이 얻어졌다. 고정화 균체의 장기적인 활성 유지는 질소원으로 polypeptone만을 1.75%(w/v) 첨가하여 가능하였다. 고정화균체를 충진한 fluidized bubble column 반응기에서 공기공급속도 6vvm으로 repeated batch fermentation를 6회 반복 수행하여도 균체의 활성이 유지되었으며, 80 mol% 이상의 수율로 2,5-DKG 생산이 가능하였다. For the efficient production of 2,5-diketo-gluconic acid (2,5-DKG) by the immobilized cell reactor was developed. The immobilized cell appeared to have diffusion limitation, and a maximum production of 2.4-DKG was accomplished with 2 mm diameters of immobilized beads. Long-term stabilities of the immobilized cells could be maintained by addition of 1.75% (w/v) polypeptone. Repeated batch fermentations with about 80 mol% of 2.5-DKG yields were carried out six times in the fluidized bubble column reactors filled with immobilized cells at an aeration rate of 6 vvm.

급성 심근경색 초기에 도플러 심초음파를 이용한 좌심실 이완기 기능의 평가

신원용,김주성,김철현,이광희,최태명,현민수,김성구,권영주 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

Background : Congestive heart failure after acute myocardial infarction relate to left ventricular systolic sysfunction. Also, left ventricular diastolic function contribute to heart failure. The aims of this study were, firstly to characterize left ventricular diastolic function by transmitral flow velocity, and secondly to study the significance of Doppler measurements in relation to the development of heart failure in the early phase of myocardial infarction. Method : Pulsed Doppler echocardiography of transmitral flow was assessed in 34 patients with acute myocardial infarction. According to the Doppler transmitral flwo velocity profile, the study patients were assigned to the three groups: normal filling pattern (DT > 140ms, IVRT < 100ms), relaxation abnormality (DT > 140ms, IVRT ≥ 100ms), pseudonormal or restrictive pattern (DT ≤ 140ms). Also, on the basis of the presence of heart failure during first week of hospitalization, the patients were divided into two groups: patients with no sign of heart failure (Killip class Ⅰ) and heart failure (Killip class Ⅱ-Ⅳ). Results : Of the 34 patients studied, 10(29%) were normal filling pattern, 17(50%) abnormal relaxation and 7(21%) were restrictive patterns. The left ventricular ejection fraction(EF, 40 ±6%) of restrictive pattern was significantly lower than that of normal filling pattern of abnormal relaxation(p < 0.01). And, the IVRT, DT, E/A and left ventricular EF were reduced in patients with heart failure(14 patients) compared to no sign of heart failure(20 patients)(p<0.05). Of the patients with heart failure, IVRT and left ventricular EF were reduced in patients with DT≤140 ms compared to DT> 140ms(p=0.001). Conclusion : Left ventricular diastolic dysfunction is present early after onset of symptoms of acute myocardial infarction. Assessment of left ventricular diastolic function complements measurements of systolic function in the evaluation of cardiac function. DT, IVRT, E/A and left ventricular EF are useful predictors for development of congestive heart failure following acute myocardial infarction.

一部農村地域 靑少年層의 成長發育과 體容積·體脂肪量에 關한 硏究

申吉洙,朴喆斌,南炳執,朴淳永 圓光大學校 附設 體力科學硏究所 1981 體力科學硏究 Vol.4 No.-

A study on 3,663 middle and high school students(1790 boys and 1873 girls) in rural areas of Jeonla Province was conducted from May I to July 30 in 1978 for assessing their physical growth and development in terms of physical and nutritional indices, and the correlation between body weight and volume is obtained. Following are the results. A. Physical Growth and Development. 1. Rapid growth of physical grovth in terms of body height, weight, chest-gi-rth and sitting height has been observed among 17 year-old boys and 15 year-old girls. Growth in terms of physical growth and development turned out to be slower among students of higher ages, irrespective of male of female. 2. The maximum annual growth rates were as follows; Body Height ; 6.0㎝ during the age 16∼17 for boys. 5.2㎝ during the age 12∼13 for girls. Body weight ; 6.4㎝ during the age 14∼15 for boys. 6.0㎝ during the age 12∼13 for girls. Chest-Girth ; 4.3㎝ during the age 14∼15 for boys. 5.0㎝ during the age 12∼13 for girls. Sitting Height ; 3.3㎝ during the age 13∼14 for boys. 2.8㎝ during the age 12∼13 for girls. B. Various Indices about Physical Growth and Development. 1. The lineal increase of relative body weight was shown in both sex groups belonging to the ages 11∼17. 2. As for relative chest girth, it is small in the age of 15 for boys and 12 for girls, but when they are 16 and 13, respectively, it becomes normal. 3. In both sex groups, the growth rate was shown to be constant nearly to the same degree. 4. Rohrer index was 1.1∼1.2 for boys and 1.2∼1.3 for girls. 5. The Kaup index was lower than 2.0 for boys under 15 years of age and for girls under 14 years of age. It become higher than 2.0 after they reach 16 and 15, respectively. 6. Vervaeck index was 76.9∼89.7 for boys and 78.5∼89.0 for girls. For both cases it increased with age. 7. Pelidisi index of the nutitional status was obtained 91∼92 for boys and 89∼95 for girls. C. Correlation between Body Weight and Body Height. The correlation coefficient between body height and weight is as show in Table 12. D. Standard Body Weight by Age. The equation of the standard body weight is as shown in Table 12. E. Body Volume. Mean values of body surface area(㎡), body volume(ℓ), and body density(㎏/ℓ) were calculated by an indirect method from body height and weight, as shown in Table 13. F. Body Fat Weight. The percentage of mean body fat content was 10.84±1.83 to 13.88±2.15% for boys and 22.28±2.55 to 25.60±3.99% for girls, respectively. G. Correlation between relative Body Weight and Body Volume by age. The correlation coefficient and equation between relative body weight and volume by age are an shown in Table 14.

정보처리를 위한 컴퓨터교육의 학문적 기반 분석

신수범,이철환,김영기 인천교육대학교 초등교육연구소 2001 교육논총 Vol.18 No.-

현재 초등학교 컴퓨터 교육과정에 나타난 내용을 분석하여 보면 일반화 된 컴퓨터와 네트워크의 용도를 효율적으로 재구성하지 못하고 있으며 컴퓨터 교육과정과 그 이외의 교육과정에서 정보를 관리할 수 있는 내용으로 구성되어 있지 않다. 또한 소프트웨어의 기능 습득에 그치고 있으며 컴퓨터와 정보통신기술이 교육적 관점에서 재해석되어 있지 않고 전문적인 개념이 그대로 교육과정에 삽입되어 있는 형편이다. 이러한 점은 컴퓨터 교육의 기반이 되는 학문적 영역에 대한 연구가 새롭게 구성되어야 할 필요성을 제시하고 있다. 따라서 본 연구에서는 이와 같은 문제점을 해결하고, 컴퓨터 교육의 명확한 자리매김을 제공하기 위하여 컴퓨터 교육의 학문적 기반을 분석해 보고자 한다. There are two major curricula concepts of computer education. One is a kind of tool based curriculum that could enhance the quality of instruction and learning, such as, information and communication technology(ICT) in education, computer education as a tool, or computer/web based education. The other is a kind of content based curriculum that could handle what computer is and/ or how computer works. This is so called 'computer science education'. Because information technology has changed very rapidly and the related research is not enough, there have always been some gaps between theory and practice. When we carefully investigate the current curriculum of computer education, professionally organized contents in computer and network theory are used in elementary school. We need to re-organize the contents which is adequate to children. This situation implies it is very necessary to analyze current curriculum and setup a direction of computer education based theoretical approach in information processing area. Therefore, the main purpose of the study was to find out what computer curriculum should be changed and organized for elementary school teachers as well as students in computer education. The concept of computer education was summarized. The study surveyed and analyzed interdisciplinary subject areas related computer education, such as, computer science, information science, and cognitive science, etc.

변형된 측경부 전진피판술을 이용한 익상경 기형의 교정

신명수,박철규 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.1

Pterygium colli is a congenital malformation characterized by bilateral webbing of the neck extending from the mastoid to the acromion. The etiology of the webbed neck deformity is variable which include chromosomal abnormality, congenital disease and jugular lymphatic obstruction sequence. Aims of the surgical correction is to create a normal neck contour with a symmetrical posterior hairline while avoiding obvious scarring especially on the anterior and lateral neck. We used modified lateral cervical advancement technique for the correction of 3 cases of webbed neck deformity. All scars lie within or along the hairline and extend onto the posterolateral shoulder area. And this modification also provided natural hairine and neck controur. We can avoid tension suture and vertical suture line for the prevention of scar spreading by this medthod. There was no recurrence of neck deformity during 6 month to 2 year follow up period.

大邱地域 纖維企業의 後進國 直接投資에 관한 硏究

申壽澈 韓獨經商學會 1993 經商論叢 Vol.11 No.-

Das Ziel des vorliegenden Artikels besteht darin, wie sich die koreanische, kleine und mittelstandische Textilunternehmungen von Taegu, Korea ihre Internationalisierungsstrategien in den Entwicklungslandern entwickelt hat. Dafur wurde erstens die Theorie fur die kleine und mittelstandesche Textilunternehmungen aus Schwellenlandern aufgebaut. Zweitens wurden die Lagen und die Motivationen der kleinen und mittelstandischen Textilunternehmungen von Taegu, Korea ausfuhrlich dargestellt. Letztens wurden die Strategien von den Textilunternehmungen, z,B. die Produktions-, die Marketings- und die Personalsstrategien zur Internationalisierung in den fremden Entwicklungslandern geschildert.