협력학습을 통한 수학 학습부진아 지도

홍진곤,조승래 한국수학교육학회 2003 수학교육 Vol.42 No.3

This study analyzes the effectiveness of cooperative learning in the instruction of the underachieved students. The result of this study showed that students who participated in the cooperative learning tended to exert positive effects on the cognitive and affective(interest, self-confidence, motivation) domains. In the cooperative learning, the underachieved students were encouraged in mathematics learning and improved the efficiency of learning in mathematics.

연약층을 갖는 철골조 구조물의 지진하중 평가에 관한 연구

김종근,김진상 인제대학교 2004 仁濟論叢 Vol.19 No.1

본 연구에서는 연약층을 가지는 건축물의 동적인 거동을 다양한 해석 방법을 통해 알아보는 것이다. 본 연구에 고려된 구조물은 10층으로 된 2차원 구조물이며, 다섯가지의 기본적인 해석방법이 이 구조물에 사용되었다. 연약층은 한 층의 길이를 변화시키면서 고려하게 되며, 그 길이비율은 1.0에서 2.0까지 변화시키면서 해석을 하였다. 그리고 연약층의 위치는 저층, 중층, 고층에 위치하였다. 다섯가지의 해석방법은 3가지의 등가정적해석에 의한 대략적인 방법과 응답스펙트럼해석, 시간이력해석으로 구성된다. 연약층의 효과에 대해서는 고유주기와 층전단력을 구함으로써 결론을 유도하였다. 연약층의 위치가 저층에 있고, 그 저층에서 길이비율이 클수록 고유주기는 길어진다는 결론을 얻을 수 있었다. 또한 밑면전단력은 응답스펙트럼해석과 실제실량을 유효질량으로 하고, 1차 모드를 전형으로 가정한 등가정적해석3이 시간이력해석에 의한 밑면전단력 수치와 거의 비슷한 값을 얻을 수가 있었다. 그러나 이 등가정적해석3은 고층의 전단력을 과소평가한다는 결론을 또한 얻을 수가 있었다. I n this study the dynamic behaviors of building structures with a soft story are investigated using various analysis method. The structures studied are two- dimensional building frames with 10 story. Five fundamental cases are considered for each structure group. Soft storise are introduced by changing the height of one story. Story height ratios ranging from 1.0 to 2.0 are included. The soft stroies are located in the lower, middle and upper story. The responses are calculated using five methods, which are three approximation methods, response spectrum method and time history analysis. Conclusions are derived regarding the effects of the soft stories on fundamental periods and story shear forces. As the soft ‘story is located lower and the height ratio of soft story to typical story, the fundamental period of building lengthens. The base shear of Response spectrum analysis(RSA) and Equivalent seismic analysis with first linear mode and actual mass(ESA3) are closer to that of time history analysis, but ESA3 underestimates the story shear of upper stories.

과학사학의 형성과 연구 동향

吳鎭坤 全北大學校 1994 論文集 Vol.38 No.-

The study of Methodology on History of Science dates back to the ancient times. But regular studies of it began with the Scientific Revolution in 17th century, and since the end of 19th century researches and lectures of it have been carried out in many universities of west European countries. At the same time international societies and journals of the study of History of Science came out. But the method of its studies has changed with the change of times : in 1980s and 70s external approach method was dominant but from 1940s to the beginning of 1960s internal approach method was dominant. However, essentially, the above two methods were resulted from the classification only for convenience sake, and in 1980s it was concluded that they are relied upon each other. Also, the focus of studies has changd from the ancient and medieval science to the modern science after the modern Scientific Revolution ; and studies on History of Physics, History of Chemistry, and especially History of BIology become vigorous, and History of Medicine and History of Technology become the interests of current studies.

대구지역 실내 외 공기중 주요 대기오염물질의 농도조사에 관한 연구

최진수,백성옥,김영민,박상곤,정점희,황승만 嶺南大學校 環境問題硏究所 1995 環境硏究 Vol.15 No.1

최근 현대인의 실내거주시간이 일상생활시간의 80% 이상을 차지할 정도로 크게 증가하면서 보건·위생학적 측면에서 실내공기질은 매우 중요한 관심사로 등장하게 되었다. 본 연구는 1994년 8월의 여름철과 1994년 12월 ∼1995년 1월의 겨울철에 대구를 중심으로 가정집, 사무실, 식당과 같은 3가지 유형의 일반주거환경 중 실내·외 공기를 대상으로 실행되었다. 측정항목으로는 RSP, CO, CO₂, NO₂등의 주요 기준성 오염물질과 Bioaerosol을 선정하였다. 본 연구의 결과, 각 성분대상물질의 실내·외 농도는 실내거주환경 및 여름과 겨울, 두 계절에 따라 영향을 받는 것으로 나타났으며 실내·외 농도비교에서 RSP, CO, CO₂의 실내농도는 대부분의 지역에서 실외에 비하여 높은 농도를 나타냈다. 각 실내거주환경에 따른 실내·외의 농도는 가정, 사무실에 비하여 식당에서 상대적으로 높은 농도를 나타냈으며 실내·외 농도비 또한 식당에서 상대적으로 큰 값을 나타냈다. 여름과 겨울의 두 계절에 따른 RSP, CO, CO₂의 실내·외 농도는 여름철에 비하여 겨울철에 더욱 높은 농도를 나타냈으나 Bioaerosol의 실내·외 colony/plate는 여름철에 더욱 높은 수치를 나타냈다. The study was carried out to investigate the concentrations of indoor air pollutants such as respirable suspended particulate (RSP), carbon monoxide (CO), carbon dioxide (CO₂), nitrogen dioxide (NO₂) and bioaerosol at homes, offices and restaurants in Taegu city. Indoor and outdoor concentrations of these pollutants were observed simultaneously from August 1994 for summer to January 1995 for winter. The results were summarized as follows : 1. Both in summer and in winter, the indoor concentrations of RSP, CO, and CO₂; were higher than the outdoor concentrations, the indoor concentrations of major air pollutants (RSP, CO, CO₂, NO₂) in restaurants were higher than those in homes and offices. 2. The indoor and outdoor concentrations of RSP, CO, and CO₂; in winter were significantly higher than those in summer, on the other hand. The CFU/plate of bioaerosol in winter was lower than that in summer. These results suggested that indoor levels of air pollutants were affected by various indoor characteristics such as smoking, cooking, ventilation rate, winter heating systems, and behavioral activity of occupants.

百濟律에 관한 硏究

魯鎭坤 圓光大學校 附設 法學硏究所 1997 法學硏究 Vol.14 No.-

種子의 非正常發芽에 關한 硏究 : 2. 大麥 種子의 非正常 發芽에 關한 硏究 2. A Study on the abnormal seedlings occurred in some barely (Hardeum vulgare L.) seeds

金鎭淇,金丁坤 全北大學校 1984 論文集 Vol.26 No.-

The present study was aimed to check types of morphologically abnormal seedlings of barley (Hordeum vl\ulgare L.) seeds occurring in laboratory tests. 13 barley cultivars were collected and tested for abnormal seedling occurrence. On average, 25% of abnormal seedings were found. The abnormal seedling percnntage was comparde sith other vigour indices and there were close correlationships among them. Through the experiment, most frequently found catergory of abnormality was both plumular and root system abnormal which occupied more than 50% of the total abnormal seedlings, then plumular abnormality, followde by root system abnormality. Overall more than sixty possible abnormal seedling types were observed. The abnormalities most frequently found were in the class of deformed or unbalanced seeding, for example short or severly short, then in damaged and decayed.

석유 화학 공장에서의 위험성 평가에 관한 연구 PART Ⅰ 화재, 폭발 지수

김진곤,김광일 한국항공대학교 1992 論文集 Vol.30 No.-

본 연구는 석유/화학공장에서의 위험성 평가에 관한 것으로, 특히 물질과 공정의 위험에 관한 상대적 평가를 수행할 수 있는 방법을 제시하였다. 물질의 위험과, 공정이 내포하고 있는 위험을 각각 고려하여 이를 종합화 하였으며, 최종적으로 화재, 폭발 지수를 산정 하였다. 물질계수는 인화성과 반응성으로 산정 하였고,공정 지수는 penalty라 부르는 경험적 수치를 사용하였다. 이 F&EI는 전 공정에 적용하여 위험의 상대적 평가를 실시할 수 있으며 현장에서의 직접 적용도 가능하다. The method have been proposed for the risk assessment of petro-chemical plant, specially which can evaluate relative risk levels on the materials and processes. The each potential risk of materials and processes are derived numerically and combined these values, finally Fire and Explosion Index was found. Material factor was evaluated with the flammability and the reactivity and process factor with emprical factor called penalty. This F&EI can performed for relative risk assessement at the whole plant and directely applicable at the line.

南韓의 雨期降水의 特色에 關한 硏究

李炳坤,楊辰錫 경북대학교 교육대학원 1977 논문집 Vol.8 No.-

Distribution of monthly precipitation in South Korea shows rapid increase in June and decrease from October on. Precipitation from June till September occupies more than 61% of annual precipitation, so this period is called rainy period. This period is not only high in intensity of precipitation but also coincides with growing period of crops, therefore this period often brings about flood and drought and gives much damage to our life. The aim of this study is to clarify from various points of view the phenomena of rainy period in South Korea, and its contents may be summarized as follow; As for the changing rate of precipitation, 1) The changing rate in rainy period is indeed low compared with that in dry period, but the former is far more important than the latter from the viewpoint of their influence on human life. 2) The changing rate of each month in rainy period reaches about 50%, which is so high that something must be done urgently. 3) The changing rate of south region is generally higher than that of north region, and so is the case with coastal v. interior. In regional distribution of precipitation of intensity of precipitation, 4) The general tendency in June is that south region is higher than north, west higher than east, coastal higher than interior. 5) In July, north is higher than south, which is the contrary to the phenomenon in June. 6) In August, it is similar to the phenomenon in July, and interior region is the least. 7) In September, it shows the similar phenomenon in June, that is, south is higher than north. The above phenomena have a close relation with main cause of precipitation in each month. 8) Generally, it shows the tendency of (Sept. > July. > Aug. > June) The frequency of classified heavy rainfall is, 9) Intensively high through rainy period, 10) The highest in July of all rainy months, 11) Coastal is in general higher than rainfally over 150㎜ becomes low as it moves northwards which indicates that typhoons are the main cause of heavy rainfall. As for extreme value of precipitation, 12) The range of distribution of high value is 1400㎜ thru 2100㎜, and Seoul-centered north-west region shows the highest, whereas Pohang-centered east area is the lowest. 13) The range of distribution of low value is 130㎜ thru 240㎜, the lowest is found in south-west coast and east coast whose high value is low is low. 14) Distribution of extreme value is similar to that of mean precipitation in rainy period and is also closely related with the distribution of high value and low value.

Islam數學 發達의 社會的 背景과 그 影響

吳鎭坤 全北大學校 科學敎育硏究所 1981 과학과 과학교육 논문지 Vol.6 No.-

The Islam culture, as it is now, has taken a role of bridge between the Oriental culture and the Occidental. In the growth of modern society the sciences in Islam, especially mathematics have greatly influenced the Occidental culture. But generally we don't think we have estimated the significance of mathematical development of Islam properly for lack of understanding of it. In fact, it is right to say that without Islam culture in the middle ages, Western civilization would not be developed to the level of present state. In this paper I will analyze and evaluate the social backgeround of the Mathematics development in Islam and the mathematical achievements resulted from the social background of Islam. Emphasis will be put on the concept of numbers, algebra, geometry and trigeometry so that we will be able to reestimate the fact that science is closely related to the given society.

복싱선수의 평형성에 관한 연구

김진표,조명곤,권창기 龍仁大學校 武道硏究所 1999 武道硏究所誌 Vol.10 No.1

1. On this study, to evaluate the equilibrium function of the boxers. We measured the Both legs Standing Up Test in two cases, eyes open and eyes closed, for 30seconds and check the range of the displacement of moving distance of center and the prependicular component of force through the test of the equilibrium function in the condition of the board among the boxing team, Basketball team, and the ordinary adult male group using the force plate. 1) There is possibility of the low equilibrium function of boxers compared with others. One of the reasons is the repeated small head injuries which are the characteristic of Boxing Game. 2) We could find out the appreciation of the head injuries is significant in the boxing game place through the equilibrium Test. 2. We took a video of a game of an amateur boxer who was the National Entry of Japan at the Light Weight in Barcelona Olympic Games and performed the condition checks of self consciousness and the Simplicity equilibrium function for 36 days just before and after the game. We could find out following. 1) According to the analysis of Video, we could find out the fact that the winner of the game was hit by the punch which could be connected with the damage several times, and he also had the change of the headache in the condition checks of self consciousness.