大邱地域 纖維業의 活性化方案

李昌錫 慶北大學校 經營大學院 1987 最高經營者課程 論文集 Vol.- No.6

인공광원의 여러 파장(백색, 적색, 청색, 자색)에 따른 식물의 Brix와 Chlorophyll, 생장의 차이 연구

이창석,양희상,손소정,박종건,이성근,김태현 순천향대학교 기초과학연구소 2015 순천향자연과학연구 논문집 Vol.21 No.1,2

Recent years, the crop productivity has become lowered by the abnormal climate. There are a lot of studies for the artificial plant production systems to resolve this situation. We fabricated the LED light source plant production system, to identify the growth, amount of chlorophyll, and germination rate by different light sources. We prepared the lettuces, tomato, kiwi, strawberry, and radish for target of this experiment. As a result, there is a significant effect of different light sources to amount of chlorophyll, growth, and germination rate of plants. Furthermore, we expect that can make more effective artificial plant production system by using this results.

면역매개성 용혈성 빈혈 이환견에 발생한 혈전색전증 1례

이창석,전형규,조성남,이정연,이상은,송근호,이영원,최호정,박성준,조성환 한국임상수의학회 2007 한국임상수의학회지 Vol.24 No.2

국가장기생태연구 장소로서 구축된 남산 소나무림의 생태적 특성

이창석,조용찬,신현철,이충화,이선미,설은실,오우석,박성애,Lee, Chang-Seok,Cho, Yong-Chan,Shin, Hyun-Cheol,Lee, Choong-Hwa,Lee, Seon-Mi,Seol, Eun-Sil,Oh, Woo-Seok,Park, Sung-Ae 한국생태학회 2006 Journal of Ecology and Environment Vol.29 No.3

국가 장기 생태 연구를 위해 구축된 서울 남산의 영구 방형구에서 소나무림의 종 조성, 주요 종의 공간분포, 직경 및 수고 계급 빈도 분포,그리고 종 다양성이 분석되었다. 수집된 자료는 도심의 다른 지역(인왕산 및 홍릉),도시 외곽 지역(아차산, 북한산, 불암산, 청계산, 대모산 및 수락산) 및 자연 지역(설악산, 속리산 및 월악산)의 자료와 비교하여 남산 소나무림의 특징을 밝혔다. 남산 소나무림은 도심의 다른 지역의 소나무림과 유사한 종 조성을 나타내었다. 그러나 도시 외곽의 것과는 약간의 차이를 보였고, 자연 지역의 것과는 큰 차이를 보였다. 남산 소나무림이 보여준 그러한 차이는 대체로 그곳에서 높은 식피율을 나타낸 때죽나무, 팥배나무, 주름조개풀, 가중나무, 서양등골나물 등에 기인하였다. 주요 수종의 직경 및 수고 계급 분포를 분석하여 예측한 결과, 남산의 소나무림은 때죽나무 숲으로 천이될 가능성을 보였다. 이러한 대체 수종은 아교목일 뿐만 아니라 비내음성 종으로서 그러한 천이 경향은 퇴행 천이로 해석될 수 있었다. 도시 외곽 및 자연 지역의 소나무림들은 각각 토지 극상으로서 그 자체가 유지되거나 참나무 숲으로 천이될 가능성을 보여 남산 지역과 차이를 나타내었다. 남산 소나무림의 종 다양성은 도시 외곽 및 자연 지역의 것보다 낮았다. 이처럼 낮은 종 다양성의 원인은 이 지역의 종 조성을 다른 지역의 것과 다르게 하는데 기여한 몇몇 종의 과도한 번성에 기인한 것으로 판단되었다. 그러한 차이를 가져온 식물들은 오염된 공업단지에 번성하는 종(때죽나무와 팥배나무), 교란된 지소를 선호하는 종(주름조개풀) 및 외래종(가중나무와 서양등골나물)이었다. 그러한 결과는 남산이 심한 환경 오염과 과도한 인간 간섭에 노출되어 있음을 반영한다. Species composition, spatial distribution of major species, diameter and height classes distribution, and species diversity were .analyzed in the Korean red pine (Pinus densiflora, hereafter referred as pine) forest in the permanent quadrats, which were designed for Long Term Ecological Research (LTER). Collected data were compared with those from the other areas including urban center (Mt. Inwang and Hongneung) and boundary areas (Mts. Acha, Bukhan, Bulam, Cheonggye, Daemo, and Surak), and natural areas (Mts. Seolak, Songni, and Wolak) to clarify the ecological characteristics of pine forest on Mt. Nam. Species composition of pine forest on Mt. Nam showed a similarity with those of urban center but did a little and big differences with those on urban boundary and natural areas, respectively. Such differences that pine forest on Mt. Nam showed, were usually due to Styrax japonicus, Sorbus alnifolia, Oplismenus undulatifolius, Ailanthus altissima, Ageratina altissima and so on, which showed higher coverage there. Predicted from diameter and height classes distribution of tree species, pine forest on Mt. Nam showed a possibility to be replaced by a S. japonica. Considered that this replacer species is not only a sub-tree but also shade intolerant, such successional trend could be interpreted as a sort of retrogressive succession. Those on urban boundary and natural areas showed a difference by displaying probabilities to be maintained as themselves as an edaphic climax or succeeded to oak forests. Species diversity of pine forest on Mt. Nam was lower than those in urban boundary and natural areas due to excessive dominance of several species, which led to different species composition from the other areas. Plants, which produced the differences, were species that flourishes in the polluted industrial area (S. japonica and S. alnifolia), favors the disturbed site (O. undulatifolius), and exotic species (A. altissima and Eupatorium rugosum). Those results reflects that pine forest of Mt. Nam was exposed on severe environmental pollution and excessive human interferences.

대구지역 의료기관의 CT, MRI 보유 현황과 정도관리에 관한 담당 방사선사들의 인식 조사

이창석,조인성,이상욱,정석종,성아라,이현정,형미림,성지수,박창희,Lee, Chang-Suk,Jo, In-Seong,Lee, Sang-Uk,Jeong, Seok-Jong,Sung, A-Ra,Lee, Hyun-Jung,Hyung, Mi-Rim,Seong, Ji-Su,Park, Chang-Hee 대한디지털의료영상학회 2011 대한디지털의료영상학회논문지 Vol.13 No.3

This study concerns the present possession of CT and MRI machines in Daegu and the technologists' awareness of Quality Control. the study was conducted by visiting forty medical institutions as well as a survey. The survey was carried out by technologists responsible for CT and MRI. CT and MRI machines have only been used in medical institutions in Daegu for a short period. The study revealed that most of them have been acquired by those institutions recently. Most of the technologists who participated in the study are aware of the (prescribed) Quality Control measures and conduct regular inspections in accordance with the quality control chart, however some of them do not.

새로운 구조의 GaAs SRAM 메모리 셀 설계 ( Design of New Structured Memory Cell for GaAs Static RAM )

이창석,윤광준,박형무,마동섭 대한전자공학회 1989 대한전자공학회 학술대회 Vol.1989 No.1

<노동> 헌법에서 소외된 노동자: 삼성 노동자

이창석 열린전북 2013 열린전북 Vol.166 No.-

전단파괴가 발생한 기둥의 이력거동 예측을 위한 매개변수 결정방법 제안

이창석,한상환,고길보 한국지진공학회 2017 한국지진공학회논문집 Vol.21 No.1

Columns in existing reinforced concrete structures that are designed and constructed without considering seismic loads generally exhibit widely spaced transverse reinforcements without using seismic hooks. Due to the insufficient reinforcement details in columns compared to the reinforcement requirements specified in modern seismic codes, brittle shear failure is likely to occur. This may lead to sudden collapse of entire structure during earthquakes. Adequate retrofit strategy is required for these columns to avoid such catastrophic event. In order to do so, behavior of columns in existing reinforced concrete structures should be accurately predicted through computational analysis. In this study, an analytical model is proposed for accurately simulating the cyclic behavior of shear critical columns. The parameters for backbone, as well as pinching and cyclic deterioration in strength and stiffness are calibrated using test data of column specimens failed by shear.

생태학의 원리에 기초한 환경교육 방법의 모색

이창석 한국환경교육학회 2002 환경교육 Vol.15 No.1

The progress of environmental science and technology in the developed countries has been rapid in recent years. Particularly remarkable has been the advancement of various pollutant control measures, which have brought the pollution of inorganic factors such as air and water under control. In contrast, diversity of the ecosphere, of which man is a part, is being steadily Impoverished and the biological community is getting unvaryingly uniform. These phenomena were brought about by the expansion of artificial environment such as new industrial complexes, transportation facilities and urban development. Man has constructed uniform and artificial environment, believing in the premise of confrontation with nature, to such a scale that the natural environment and biological community have lost their balance. This will increasingly endanger the soundness of the biotic environment of nature, which constitutes the potential foundation both for the survival environment of man as biological entity and for the development of human civilization. In order to guarantee the soundness of man's body, intelligence and sensitivity as wholesome gene Pool on the earth and for the future of man, primarily important environmental education is the understanding of how man can everlasting exist in and with the survival environment. In view of this reality, it is vitally important to create ecologically diverse and well-balanced environment with living materials, i.e., vegetation in order to secure lasting survival environment for man. This task is urgently required in highly artificial environment where non-biological materials have forced the impoverishment of the biological community. Therefore, environmental education for the future should not be totally oriented to technology as that in the past nor it is limited to the medical aspect where well-being of human is the sole object of concern. That is to say, environmental education for the future should be one that provides knowledge that human can understand his place based on the ecological concept and thereby make him to have ethical consciousness that he can control his behavior within the reasonable level for ecological niche who he is located.

MMIC 기술동향

이창석,이재진,편랑의 한국통신학회 1996 정보와 통신 Vol.13 No.11