환율, 금리, 주가사이의 동적연관성 연구

홍정효(Chung-Hyo Hong),조혜원(Hae-Won Cho) 전북대학교 산업경제연구소 2010 아태경상저널 Vol.2 No.1

본 연구는 2000년 1월부터 2008년 말까지 콜금리, 3년물 국채금리, 원달러 외환시장 및 KOSPI자료를 이용하여 원달러 환율 및 장단기 금리 변화량, KOSPI수익률사이의 동적연관성을 실증적으로 분석하였다. 실증분석결과 첫째, 콜금리와 원달러 외환시장사이에는 장기적인 균형관계가 존재하고 있으나, 콜금리와 KOSPI, 원달러와 KOSPI사이에는 장기적인 균형관계가 존재하지 않는 것으로 나타났다. 3년물 국채금리는 콜금리와 공적분관계가 있으나 원달러, KOSPI와는 공적분관계가 존재하지 않는 것으로 나타났다. 둘째, 3년물 국채금리는 KOSPI 및 원달러 환율간에는 피드백적인 관계가 존재하고 있으나, 3년물 국채금리의 KOSPI 및 원달러에 대한 영향력이 그 반대의 경우보다 상대적으로 더 강한 것으로 나타났다. 세째, KOSPI와 원달러 환율사이에도 피드백적인 영향력이 존재하고 있으나 KOSPI의 원달러 환율변화에 대한 영향력이 그 반대의 경우 보다 더 강한 것으로 나타났다. 다섯째, 콜금리는 원달러 외환시장에만 영향력을 미치고 있으며, 장단기 금리사이에는 3년물 국채금리가 콜금리에 대한 영향력을 미치고 있으나 그 반대의 경우는 존재하지 않는 것으로 나타났다. 여섯째, 전반적으로 4가지 금융시계열모두 호재보다는 악재에 더 민감하게 반응하는 정보의 비대칭적인 특성이 존재하는 것으로 나타났다. 이러한 실증분석결과는 투자자들의 투자 및 위험관리전략 수립 뿐 아니라 정책당국자들의 통화 및 금융정책수립에 다소 나마 기여를 할 수 있을 것으로 보여 진다. We try to examine on the short term lead-lag relationship between call, KOSPI and won dollar spot markets with a vector error correction model, Granger causality test and impulse response analysis. This paper uses daily return data covering from January 2000 to December 2008. The major results are as follows; First, according to empirical test based on the Granger causality, the returns of won/dollar spot market Granger causes call market but vice versa. Second, we find a bilateral influence between won/dollar and KOSPI spot markets but the impact of KOSPI is relatively more dominant than of that of won/dollar market. Third, we also find that there is no influence between call and KOSPI markets in a statistically significant level. We hope these kinds of empirical results might be helpful for the investors to set up a asset portfolio and risk management system.

Trimethylpyrazine이 조골세포 분화에 미치는 영향

손효은 ․ 장원구 대구대학교 산업기술연구소 2018 産業技術硏究 Vol.29 No.2

Trimethylpyrazine (TrMP) is known to be derived from cocoa and nuts. In present study, we examined the effects of TrMP on osteoblast differentiation. The mRNA expression of osteogenic genes in MC3T3-E1 cells were determined by RT-PCR. TrMP induced the expression of osteogenic genes such as, inhibitor of differentiation-1 (Id1), distalless related homeobox (Dlx5), runt related transcription factor 2(Runx2), alkaline phosphatase( ALP), osteocalcin (OC). Alizarin red s staining was performed to measure calcium deposition. TrMP increased calcium deposition in MC3T3-E1 cells. These results suggest that TrMP was induces osteoblast differentiation in MC3T3-E1.

교사수행평가의 이론적 기초

원효헌 安岩敎育學會 1997 한국교육학연구 Vol.3 No.1

본 연구는 교사평가의 개념과 목적 및 기능을 살펴 보고, 교사평가를 통해 수업의 질을 개선하고 유지하기 위해서 교사수행평가가 반드시 갖추어야 할 요소로서 타당한 평가준거 및 지표의 설정 방법과 신뢰로운 평가정보의 수집방법에 대한 분석적 접근을 함으로써 우리 학교교육 현장에 성공적인 교사수행평가체제가 정착되는 데 시사점을 제공하고자 하였다. 교사수행평가의 핵심적 요소라 할 수 있는 교사의 수업행동에 대한 평가준거 및 지표를 타당하게 설정하기 위한 방법으로 수업이론이나 모델, 과정-산줄연구결과, 전문가 집단의 판단 등 세 가지 활용 방안과 설정된 평가준거 및 지표에 대한 신뢰로운 평가정보를 수집하기 위한 방법으로 평가정보의 출처 및 근거, 평가 기법을 중심으로 제시하였다.

교사의 수업 수행 평가 준거의 타당화 연구

원효헌 고려대학교 교육문제연구소 1997 敎育問題硏究 Vol.9 No.-

급성 소뇌염 2예

남효석,이경열,정연경,이병인,김원찬,김원주,최영철,정운교 대한신경과학회 1999 대한신경과학회지 Vol.17 No.3

Agrobacterium tumefaciens를 이용한 bialaphos 저항성 형질전환 벼의 개발

이효연,이춘환,김호일,한원동,최지은,김진호,임용표 충남대학교 생물공학연구소 1999 생물공학연구지 Vol.7 No.-

비선택성 제초제인 bialaphos는 고등식물에 있어서 glutamine 합성을 억제하여 식물체를 고사시킨다. Acetyltransferase에 의해 encoding된 bialaphos 저항성 유전자는 세균 Streptomyces hygroscopicus SF1239로부터 cloning된 것을 사용하였다. Bialaphose 저항성 유전자를 Agrobacterium 감염법을 이용하여 국내에서 재배되는 벼(동진)에 도입한 결과 약 30%정도의 형질전환 식물체를 얻을 수 있었다. T_1세대의 17개체는 hygromycin과 bialaphos에 대한 저항성 유전형질이 3 : 1로 분리되었다. 또한 Southern 분석을 실시한 결과 wild type의 식물체에서는 Bar 유전자의 검출을 볼 수 없었으나 형질전환 식물체의 경우 Bar 유전자의 검출이 가능하였다. T_3 세대의 형질전환 식물체와 wild type의 식물체를 포장상태에서 비선택성 제초제인 바스타를 살포하고 3주 후에 관찰한 결과 형질전환 식물체는 외형적으로 아무런 피해를 받지 않고 정상적으로 생장하였으나, wild type의 식물체와 잡초는 모두 고사하였다. 이상의 결과를 종합해보면 hygromycin과 bialaphos 저항성 유전자는 Agrobacterium 감염법을 이용하여 단자엽 식물인 벼에 도입할 수 있다는 것을 보여준 것이며, 또한 bialaphos 저항성 유전자가 식물에 도입됨으로써 비선택성 제초제에 대한 저항성 식물을 개발 할 수 있다는 것을 보여 주었다. The bialaphos is a potent inhibitor of glutamine synthease in higher plants and is used as a non-selective herbicide. We have used the bialaphos resistant gene (Bar) encoding for an acetyltransferase isloated from Streptomyces hygroscopicus SF1293. Callus derived from mature seeds of rice (Oryza sativa L. cv. Dong Jin) were co-cultivated with Agrobacterium tumefacieus EHA101 carring a plasmid pGPTV-HB containing genes for hygromycin resistance (HygR) and Bar. Transgenic plants showing in vitro resistance to 50 mg/L hygromycin and 10 mg/L bialaphos were obtained by using a two-step selection/regeneration procedure. Transformation efficiency of rice was about 30% which was as high as reported in other dicotyledons. Progenies (T_1 generation) derived from primary transformant of 17 lines were segreagated with a 3 resistant:1 sensitive ratio in medium containing hygromycin and bialaphos. Stable integration of Bar gene into chromosomal DNA was proven by Southern blot analysis of genomic DNA isolated from T_2 progenies. Transgenic plants (T_3) grown in the field were resistant to bialaphos (Basta) at a dosage lethal to wild type plants.

家外活動女性의 出産行爲 및 態度에 關한 硏究

李效再,李東瑗 이화여자대학교 한국문화연구원 1975 韓國文化硏究院 論叢 Vol.25 No.-

1. In this survey it was uncovered that the average age of first marriage of women with outside-home activities was 25 years and their average number of pregnancies was 4.0. The average number of their live births was 2.5 while the number of their living children, on average, was 2.4:1.3 sons and 1.2 daughters. The average number of induced abortion practiced was 0.98. In general this survey revealed that the fertility of women with outside-home activities was lower than average women. However, considering the high level of education of women in this survey, it seems somewhat early to conclude that their fertility is lower; this should be re-examined in a more controlled survey in the future. Between the employed women and those in voluntary organizational activities, there is a clear difference of fertility. Considering the fact that women participating in voluntary organizational activities are actually in similar conditions as the average women, it can be said women's occupational activities are closely related with their fertility behavior. 2. The degree of knowledge of contraceptives that women with outside-home activities have is higher than that of average women. Also, the order of contraceptive methods according to their degree of knowledge is different from that of average women. Women participating in outside-home activities know on the average of 5.1 kinds of contraceptive methods, which is higher than the average women (Seoul: 1.12, urbanities: 0.90, women with education higher than senior high school: 4.03). The contraceptives that women with outside-home activities know about fall in the following order: oral pills, the rhythm method, condom, and vasectomy, whereas the average women know about the loop, condom, and oral pills, in that order. 3. Both women of outside-home activities and the average women highly approve of contraceptives. Concerning induced abortion, however, they show opposite attitudes. The average women give a somewhat positive response to induced abortion as 46% of them approve of it, while 41% disapprove. In case of those women participating in outside-home activities, induced abortion is generally negated-only 17% of them approve and the majority (66.4%) disapprove. 4. Though women of outside-home activities are generally negative toward induced abortion, the rate of their actual practice of induced abortion is higher than that of average women. Furthermore, when questioned " Will you have an induced abortion when it is an unplanned pregnancy?", a large majority of them (66.0%) answered that would, and only 13.3% of them answered they would give birth. From this, it can be observed that even though those women with outside-home activities basically have a negative attitude toward induced abortion, they actually practice a high rate of induced abortion. 5. Much more women of outside-home activities use contraceptive methods than the average women. 80% of them have had the experience of using contraceptives while 44% of the average women have. Also, a higher rate of women with outside-home activities, than the average women, are at present using contraceptives. 6. Women of outside-home activities are somewhat more acceptant of sterilization as 13% of them practice it, which is higher than the 3% of the average women who do. Among these women, 4.9% (tubal ligation, 2.9% or 17 women, and vasectomy, 1.7% or 10 men) directly used the permanent contraceptive method without ever using other methods. 54.6% of those women in outside-home activities approved of vasectomy, higher than the 42.8% of them who approved of tubal ligation.

상태방정식을 이용한 혼합물의 임계특성치 추산

이승엽,박원규,배효광 嶺南大學校 工業技術硏究所 1985 연구보고 Vol.13 No.2

Supercritical fluid extraction can generally be accomplished at conditions near the critical point of fluid. Most phase equilibrium studies related to supercritical fluid extraction have been restricted to single-solvent system. However, under certain conditionsm, it may be advantageous to use a mixed fluid. Therefore, this work is to offer the necessary basic data, ie., the method to calculate the critical properties of mixtures. For the prediction, it is necessary to use the equation of state which can represent the state of substance at high pressure. In present work, it uses the equation proposed by Peng-Robinson to calculate the critical properties of mixtures. It is shown that the experimental values to be available in literature may be well corresponded to the calculated values by thermodynamic relationships and the equation of state mentioned above. Then, we obtained also the optimum value of interaction parameter included in the equation for a mixed fluid system.

義原君(1661~1722) 墓 出土織物에 관한 연구

조효숙,안지원 한국의류학회 2002 한국의류학회지 Vol.26 No.9,10

The purpose of this study is to categorize the type of fabrics and to analyze weaving method on the silk fabrics from ewongun's Tomb. The conclusions of this research are as follow. 1) Among the 26pieces of excavated clothes, 98% of them were made of silk fabric and among them 84% used high-quality non-patterned silk. I would assume, therefore, that the tomb was owned by a person who had a dignified yet humble taste of higher society. 2) The weaving methods of textiles are plain weave, twill weave, satin weave. Plain weave includes spun silk tabby, fine filament silk tabby, raw silk tabby, thine silk tabby, damask on tabby, twill weave includes twill damask with different directions, satin weave includes non-patterned satin damask, 5-end satin damask(4/1 warp faces ground, 1/4 weft faced pattern). As the result of literature survey, I settled the names of textiles as follows; tabby was called Myunju(綿紬), Saeju(細紬), Saengcho(생초), and Sookcho(숙초) according to the kind and density of silk threads used; Damask on tabby was called Hwamunju(花紋紬) Twill damask was called Hwamunnung(花紋綾); Satin damask was called Hwamundan(花紋緞) if they bear patterns by themselves or Mumundan(無紋緞) if they don't have any patterns on them.

고등학교 지구과학 실험·실습 요목 비교 분석

정원우,이윤종,기우항,김영호,양승영,강용희,안병호,임성규,윤일희,김중욱,윤성효,강동진 경북대학교 과학교육연구소 1997 科學敎育硏究誌 Vol.21 No.-

The purpose of this study is to investigate the status of the experimental and practical education in high school earth. The present status and reasonable management of the experimental and practical education in high school earth science have been grasped from the questionaires. To do this, eighty eight earth science teachers in Korea are administered questionaires. The frequency of the experimental and practical items in the seven kind of earth science text books were investigated. The problems and the reasonable management for experimental and practical education were proposed in this paper.