소양정의 시문과 춘천문화

오춘택(Oh Chun-Taek) 한림대학교 아시아문화연구소 2002 아시아문화 Vol.- No.18

세포질내 정자주입법(ICSI)에 있어서 정자흡입 및 난자내 주입방법에 관한 연구

이택후,김항진,송건호,김대근,전상식,박윤규,서태광,전병균,류은경,이은숙,문진수,김광철 경북대학교 의학연구소 2000 경북대학교병원의학연구소논문집 Vol.4 No.1

Study on Method of Sperm Aspiration and Injection into an Oocyte in Intracytoplasmic Sperm Injection(ICSI) Immobilization of spermatozoa prior to intracytoplasmic sperm iniection(ICSI) sometimes results in crooked tail and this makes it difficult to aspirate sperm into an injection pipette tail first. Head-first sperm aspiration into an injection pipette avoid this problem due to the bigger size of the sperm head. The effect of head or tail-first sperm injection into an oocyte on fertilization cleavage, percentage of grade I embryos and development to blastocyst stage in ICSI program has been studied. A single living immobilized spermatozoa from oligoasthenozoospermic patient was injected into an oocyte head-first or tail-first according to the treatment. Eighteen hours after microinjection, oocytes ware inspected for survival and fertilization Fertilized oocytes with two pronuclei were cultured in 30μl drop of mHTF supplemented with 10% heat-inactivated follicular fluid(FF) at 37℃. On day 2. embryo transfer was performed with cleaved embryos. The remaining 2-8 cell stage embryos were co-cultured with BRL cells in mHTF + 10% FF for 72 hours and the developmental stage was observed. The data were analyzed by Analysis of Variance. A total of 164 oocytes from 36 cycles were assigned to earth treatment and ICSI was performed(88 head-first, tail-first). The rates of normal fertilization were 81.8% and 76.3% for head-first and tail-first, respectively. Of the fertilized oocytes, the percentage of cleaved embryos and the percentage of grade 1 embryo among cleaved embryos were 88.9% and 68.8%, 93.1% and 74.1% for head-first and tail-first, respectively. Of the 2-8 cell embryos cultured, 44.4%(16/36) and 50.0%(10/20) for head first and tail first, respectively developed to blastocyst stage. There were no differences in fertilization, cleavage, rates of grade 1 embryos, and development to blastocyst stage. In conclusion, head-first or tail-first sperm injection into an oocyte in ICSI program does not affect fertilization and subsequent embryo development to blastocyst stage in vitro.

수행평가가 초등학생의 체육학습활동에 미치는 영향

손천택,차인철 한국학교체육학회 1999 한국학교 체육학회지 Vol.9 No.1

본 연구의 목적은 수행평가가 초등학생의 체육수업 참여 행동에 미치는 영향을 규명하는 것으로 줄넘기 단원을 전통적인 평가방법과 수행평가 방법의 수업에 적용, 수업간의 비교 검 증하였다. 첫째, 전통적 평가방법과 수행평가 방법을 적용한 수업간의 학습자의 운동과제 참여시 간, 인지적 참여시간을 변인으로 하여 차이를 분석하였다. 둘째, 학습태도는 체육수업, 교우 관계, 교사에 대한 학생의 생각을 알아보는 것으로 하였다. 셋째, 두 평가방법 모두에게 인지적 평가를 실시하였다 운동과제 참여시간 분석은 각 영역별 관찰 빈도에 대한 백분율을, 학습태도 검사는 빈도분석을, 인지적 사고는 평균값을 구하였다. 본 연구문제의 결론은 첫째, 체육학습에서 학생들의 운동과제 참여시간에 관한 것으로 수행평가방법을 적용한 수업에서 보다 높게 나타났다. 둘째, 학습태도 검사에서 체육학습에 관한 학생들 인식의 변화는 수행평가를 적용한 체육수업에서 체육활동이 생활에 도움이 된다는 긍정적인 반응을 나타냈다. 셋째, 수행평가방법을 적용한 수업에서 학생들이 학습해야할 운동기능의 구조를 인지적으로 정확하게 파악하고 있었다. The purpose of this study was to investigate how the performance assessment can improve the quality of physical education in elementary schools. Performance assessment and traditional assessment were compared by such comparative factors as motor engaged time, teaming attitude and the level of cognitive thinking. Both performance assessment and traditional assessment were applied to actual classes. Six classes in the 6th grade were sampled, 3 classes for performance assessment and 3 for traditional assessment. On the basis of the analysis of the collected data the following conclusions were drawn; The classes of performance assessment were better than those of traditional assessment in the motor engaged time. Especially, moving and waiting time were low but active cognitive engaged time was very high in the performance assessment classes. And the students in the performance assessment showed lower neglect-teaming attitude than those of traditional assessment classes. The students in the performance assessment classes had better attitude toward physical education and a more friendly relationship with their pent and teachers. The students in the performance assessment classes showed higher level of cognitive thinking than those in the performance assessment classes. In conclusion, performance assessment classes were known to be more efficient than traditional assessment classes in 40-minutes of elementary schools physical education classes.

어린 가토에서 자가 연골 이식후 연골성장에 관한 실험적 연구

권택근,김태연,정전은,이동진 대한성형외과학회 1992 Archives of Plastic Surgery Vol.19 No.3

Does free transplanted autologous cartilage grow? Until now many autors have published different results about the growth potential of cartilage. Some authors have produced in their study that transplanted cartilages were able to grow, but others showed contradicting results. In this study, authors obtained cartilages from young rabbits'ear, 10 by 10mm in size and divided them into two groups ; the first group was cartilages with perichondrium and the second group was cartilages stripped perichondrium. We transplanted both groups of cartilages in the posterior nuchal area of rabbits. Then numbers of specimens of each group were evaluated and compared for assessment of cartilage growth. After observaton for six months, we took the cartilages from the posterior nuchal area and examined the surface area, the thickness, and the weight and finally confirmed the growth potential of the cartilage by histologic study. The results are as follows : 1, The surface area, the thickness, and the width of the transplanted cartilages were increased significantly in gross specimens and their measured values were statistically significant and cartilages with perichondrium showed more growth than cartilages stripped perichondrium 2. In histologic studies, we observed increased surface activities with numerous proliferatng cells and found no abnormal features compared with normal cartilages. Cartilages with pericondrium were thicker than cartilages with stripped perichondrium

급속응고 Al-20Si-5Fe-2x(x=Ni, Cr or Zr) 합금의 미세조직 및 기계적 특성

김탁수,千炳善 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.8

The microstructure and mechanical properties of the gas atomized and extruded Al-20Si-5Fe-2x (x=Cr, Zr or Ni) alloys were evaluated. The alloy powder was degassed under different vacuum levels in advance of the extrusion. It was shown that the addition of a quaternary element resulted in the formation of very fine particles that contributed to the improved mechanical properties of the alloys, especially at elevated temperatures. Of these additions, nickel was found to be the most effective in increasing the UTS of the alloy both at room and elevated temperatures. Degassing the rapidly solidified powders under better vacuum improved the properties further.

Agency 問題와 資本構造理論의 再吟味

孔丁澤,朴千植 경북대학교 산업기술연구소 1988 産業技術硏究誌 Vol.16 No.-

1. Although MM's theory and bankruptcy cost theory have tried to prove the relevancy of the capital structure, They have bailed to test the relevancy empirically. And other financial theorists have asserted that a firm's capital structure is determined adjusting to external changes, but their assertions limited; They focused only on the traditional factors which seem to determined a firm's capital structure. 2. Recently, there have been new approach to explain the capital structure in terms of agency problems based on ownership structure. Agency problems emerge when conflicts of interest between agents and principals or among the principals themselves: stockholders and managers, stockholders and creditors. 3. The entity chooses a financing strategy that minimizes the aggregate of agency cost. Agency cost be defined as monitoring cost, bonding cost and residual loss. 4. In conclusion, because of the existence of agency costs, there might be sure a thing as an optimal capital structure which continue both debt and equity.

"The Immortality Ode"에 있어서 Poetic Vision의 問題

許天澤 한국영어영문학회 1980 영어 영문학 Vol.74 No.-

용지 호수공원의 수질관리 방안에 관한 연구

이춘수,서규태,문병현,이택순 7개 국립대학교 환경연구 논문집 공동발행 위원회 2003 공업기술연구 Vol.3 No.-

This study was performed for water quality management of Yonggi Lake Park in Changwon City. The results are as follows; The water quality of the lake was deteriorated during summer season because of algal blooming. It was estimated that existing treatment capacity of the lake water was not sufficient to meet the target lake water quality. And so the lake water circulation period, 40 days should be shorten to below 30 days by increasing the treatment capacity. Fountain and air supply facilities for 02 supply and mixing caused rather resuspension of solid settled at the bottom of the lake. It was also evident that the extended detention of water in the lake resulted in water quality deterioration. Consequently it is important to supply high quality water from other sources. Especially lower temperature water had better effect on improvement of the water quality.

林相別 夏期 流出量 調査硏究

柳澤圭,李天龍,金載水 圓光大學校 1986 論文集 Vol.20 No.2

우리나라의 水資源을 論함에 있어서 全 國土의 66%를 차지하고 있는 山地의 물 收支문제는 河川의 流量을 決定하게 되는 매우 重要한 要因이라고 생각된다. 이리하여 京畿道 光陵의 優良한 闊葉樹와 고거 甚한 山地荒廢로 砂防事業을 實施한 바 있는 京畿道 楊洲郡 檜泉面 栗亭里 불량 소나무 ?樹林地를 選定하여 降水量 및 流水量調査 施設을 設置하여 調査하고 山林狀態가 降水에 따른 流出이 어떻게 나타나고 있는가를 綿密하게 分析하였다. Natural water resource of our country depends on o forest area because of it is occupied about 66% of country area. The yield of water in the forest is very important factor to decide of stream flow for use. Two area of good forest land and a poor forest land near the Euijeong-bu city for this study. The good forest is consisted of natural old aged broad-leaf trees and the poor forest is consisted of natural pine sapling. The permanant gauge station which installed with a self-recording raingague and a stage recorder in a stilling well was established in each experimental plot. It was carried out during 1978-1982 about the characterize of rainfall and runoff. We are clear up the effect of forest in the control of water discharge. In monthly distribution of annual rainfall, more than 60% of the total annual rainfall were recorded for 2 months from July to August. Annual run-off rate was analysed as 35.4% from the good forest, while 39.8% from the poor forest. Good forest has increased larger storage water in the soil than a poor forest.

Alfred Tennyson의 문학세계 : 을 중심으로 In Memoriam

허천택 동국대학교 영어영문학과 1996 Dongguk review Vol.- No.24-25

The prevailing image in alfred Tennyson's work is that he misshaped the taste of readers by his poetic technique. As a Victorian poet, no poet except him has ever been so completely a national poet. Although he lived in the shadow of the great romantics, his poetic influence could not be questioned in the context of Romanticism. In his In Memoriam and Tears, Idle Tears, he shows himself to be engrossed in such Victorian concerns as the meaning of life and the nature of faith in a scientific world. Particulary, after the death of Arthur Hallam, a note of depression and desperation developed under the cloud of Tennyson's overwhelming sorrow. For Hallam when alive was the center of Tennyson's life, and Hallam dead was the focal point of his life during the poem's composition. Tennyson recalled how as a child, he used to run from the rectory on such occasions, throwing himself down among the gravestones on the churchyard, praying for a release in death. We can only conjecture about the impact of these experiences upon his creative imagination. What he does articulate about his childhood is "the passion of the past," a phrase which he used to describe the inspiration for Tears, Idle Tears. In this poem, he defined "the passion of the past" more precisely by his assertion that its origin is located not in childhood but in the adult experience of unassuageable love. The imaginative reality of these experiences became a fact with the death of Arthur Hallam that blotted out all joy from his life. As a poem of spiritual quest, In Memoriam is also a poem of aesthetic quest which deals with the way of the poet and the way of the soul. This poem is far from being a continuous lament over Athur Hallam, even though it begins with personal lamentation and with questions about the soul's survival in a future life. What he really sought was not religious faith, but assurance of his own religious preferences. God is love. Hallam is himself an embodiment of ideal love which is immortal. Therefore, Tennyson believes in the soul's survival and its immortality in a future life. Hallam belongs to every thing and to all. He is everywhere in water, air, flower, sun, and star. Finally, when Tennyson recognizes his friend's union with the divine, he loses forever the sorrow born of grief and doubt. In Memoriam begins with death and ends in promise of new life.