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      • 한국관광행정조직의 발전방안

        신정식 대구산업정보대학 2000 논문집 Vol.14 No.1

        Autonomous national defense and economic development have been given top priority in Korean politics since the 1960's. Consequently, the national economy has grown rapidly. The tourist population in Korea has increased continuously since 1990. Tourism is no longer a luxury for the rich only, but rather is recognized as an undisputed privilege for all. To cope with the increasing demands of tourism, The Tourism. Administration will have to be strenuously reformed in order to keep up with changing times. The following study examines and evaluates the current problems with The Tourism Administration. The followings are the current problems and recommendations for improvement: First: Activities of the Tourism Policy Council are considered unsatisfactory. Higher authority should be given to The Tourism Policy Council and need to be revitalized. Second: Central Administration functions are decentralized into several ministries. This dilutes the effectiveness of The Central Administration Overlapping functions should be minimized. Third: The organization of the Local Administration for tourism is much too weak. The manpower in the organization of Tourism Administration should be increased. Fourth: Lack of professional Knowledge hinders the administrative officials from adequately coping with increasing demands of their duties. Special training is needed to promote their professional Knowledge for these duties. In order to improve the Tourism Administration, these solutions deemed necessary: (1) Establish an independent office of tourism. (2) Amend the rules to raise the rank of tourism administrative personnel.

      • 머리부분에 방사선조사를 받은 흰쥐 샘뇌하수체의 변화에 대한 면역전자현미경적 연구

        신기호,박경호,안의태,양남길,고정식 순천향의학연구소 1995 Journal of Soonchunhyang Medical Science Vol.1 No.2

        본 실험은 과다한 X-선에 머리부분이 노출되었을 때, 샘뇌하수체의 변화를 알아보기 위하여 시행하였다. 체중 200-250g의 Sprague Dawley계 숫흰쥐를 실험동물로 사용하였으며, 정상군과 방사선조사군으로 나누었다, 방사선조사군은 조사량에 따라 3,000 rad 조사군과 6,000 rad조사군으로 나누어, 방사선 조사후 6시간, 2일 및 6일 후에 도살하여 조직을 절취하였다. 방사선조사는 흰쥐를 sodium thiopental로 마취한 후 방사선선형가속기(Mitsubishi Linear Accelerator ML-4MV)를 사용하여 머리부위를 조사하였다. 조사조건은 조사거리 80 cm, 조사구역 30 cm X 30 cm, 조사깊이 1.2 cm(100% skin dose)였으며, 분당 200 rad씩 조사하였다. 샘뇌하수체는 1% glutaraldehyde- 1% paraformaldehyde액으로 일차 고정한후, 2% osmium tetroxide액에 이차고정하였으며, 고정이 끝난 조직은 alcohol과 acetone으로 탈수한 후 araldite혼합액에 포매하였다. 포매된 조직은 , LKB-V ultratome으로 60-70nm두께의 절편을 작성하여 300 mesh nickel grid에 붙인 다음 젖샘자극호르몬과 성장자극호르몬에 대한 단독면역염색 및 이중면역염색을 시행하였다. 면역염색이 끝난 절편은 uranyl acetate와 lead citrate로 염색한후, JEM 100CX-Ⅱ 전자현미경으로 관찰하여 다음과 같은 결과를 얻었다. 1. 젖샘자극호르몬분비세포는 불규칙한 모양을 한 큰 분비과립(300-700 nm)을 가진 성숙세포, 크기가 다양한 둥근 분비과립(150-200 nm)을 가진 중간 세포와 크기가 작은 둥근 분비과립(100-150 nm)을 가진 미성숙세포로 나눌 수 있었다. 2. 성장자극호르몬분비세포는 크고 둥근 분비과립(200-500 nm)을 가진 제 1 형 세포와 상대적으로 작고 둥근 분비과립 (150-200 nm)을 가진 제 Ⅱ형 세포로 나눌 수 있었다. 3. 방사선 조사후 6 시간군에서 3,000 rad에서는 큰 변화가 없었고, 6,000 rad에서는 사립체와 과립형질내세망의 수조 확장이 관찰되었다. 방사선 조사후 2일군에서는 큰 변화가 없었으며, 6일군에서는 핵막구조의 확장이 관찰되었다. 4. 세포의 종류도 젖샘자극호르몬분비세포는 3,000 rad 조사군과 6,000 rad 조사군 모두 2일군에서는 성숙형이 감소하고 중간형과 미성숙형이 자주 관찰되었으며, 6일군에서는 정상군과 같은 분포양상을 보였으나 분비과립의 금입자표지가 감소한 것을 관찰할 수 있었다. 성장자극호르몬분비세포에서는 뚜렷한 세포형이 분포변화는 관찰할 수 없었으나 금입자표지의 감소는 나타났다. 5. 방사선조사후 6시간군에서 부터 mammosomatography가 나타났는데, 한 세포 내에 젖샘자극호르몬과 성장자극호르몬을 지닌 분비과립이 함께 존재하였으며, 세포의 모양은 다핵세포의 형태를 하고 있는 것과 불규칙한 모양을 한 것이 있었는데, 이와같은 결과는 방사선조사 후 샘뇌하수체의 기능저하에 따른 보상작용으로 나타난 현상이라 생각된다. 이상의 결과로 보아 방사선 조사를 받은 초기에는 분비과립의 방출이 과다하게 일어나며, 방사선 조사의 영향으로 세포질소기관의 기능이 약화되어 6일이 지나면 샘뇌하수체의 호르몬분비능력이 저하되는 것 같다. This experiment was performed to study the morphological changes of the adenohypophysis of rat following X-ray irradiation. Male rats were divided into normal and X-ray irradiation groups. The heads of rat were exposed to 3,000 rads or 6,000 rads of radiation in a single dose. X-ray source was a Mitsubishi Linear Accelerator ML-4MV. Only the heads of animals were exposed at the distance of 80 cm, within the area of 30 X 30 cm, in the depth of 1 cm, with the speed of 200 rad/min. Animals of X-ray irradiation group were sacrificed on 6 hours, 2 days and 6 days after the irradiation. Tissue blocks of adenohypophysis were fixed in the 1% glutaraldehyde - 1% paraformaldehyde solution, followed by refixation in the 2% osmium tetroxide solution. Dehydradted blocks were embedded in araldite mixture. The sections were cut on a LKB V ultrotome, and ultrathin sections were places on bare nickel grid(200 mesh). The section-bearing grids were floated upside down on the solutions in a moisture chamber at room temperature. Sections were single immunostained or double immunostained for prolactin and/or growth hormone. And the sections were jet washed with distilled water. The immunostained sections were contrasted with uranyl acetate and lead citrate, and observed with JEM 100CX II electron microscope. The results were as follows: 1. Three types of the prolactin cells according to their size and shape of secretory granules were found; mature type cells contained large pleomorphic secretory granules(above 500 nm). intermediate type cells contained round granules of varying size(200-250 nm), and immature type cells contained small round granules(100 nm). 2. Two types of the growth hormone cells according to their size of secretory granules were found: type I cells contained large round secretory granules(200-300 nm) and type II cells contained small granules(100-200 nm). 3. Six hours after the irradiation, adenohypophysis showed swollen cisternae of granular endoplasmic reticulum and alterations of mitochondrial cristae, but only in doses of 6.000 rads. 4. Adenohypopysis showed decrease in number of mature type prolactin cells on 2 days after irradiatin, and recovered number of mature typer prolactin cell. but their immunoreactiveity were gradually decreased following the irradiation, as compared with that in normal adenohypophysis. 5. Six hours after the irradiation, mammosomatotrophs were found to contain prolactin and growth hormone within different granules each other. Some cells were multinucleated, and some cells exhibited irregular cytoplasmic processes. Summarizing the above results, adenohypophysis rapidly released the secretory granules after the irradiation, and cell organelles of prolactin cells and growth hormone cells were altered or degenerated. It means that adenohypophysis decreased its hormone producing activity on 6 days after irradiation.

      • KCI등재후보
      • 現行 觀光行政組織의 問題點 考察

        申政湜 대구산업정보대학 1995 논문집 Vol.9 No.1

        The autonomous national defense and the development of the national economy have been given top priorities in the nation's political measures in Korea since the 1960's. Consequently, the national economy has continuously grown, As a result, as in the developed countries the tourist population in Korea has been increasing since 1990. Tourism is no longer the Luxuary for rich people only, but is rather recognized as an undisputed privilege to all. To cope with the ever increasing demands of tourism, the organization of the Tourisum Administration will have to be strenuosly reformed in order to keep up with changing times. This study examined and evaluated the current problems in the organizatin of Tourism Administration. Following are the current problems and recommendations for improvement : First : Activities of the Tourism Policy Council are generally considered unsatisfactory. Higher authority should be given to the Tourism Policy Council. Activities of the council need to be revitalized. Second : The functions of the Central Administration for Tourism are decentralized into several ministries. Accordingly, the effectiveness of the central administration is hindered. The overlapping functions should be minimized. Third : The organization of the Local Administration for Tourism is much too weak. The manpower in the organization of Tourism Administration should be increased. Fourth : Because of a lack of professional knowledge, the personnel in the organization of Tourism Administration are not able to adequately cope with the increasing demands of their duties, Special training should be given to the administrative officials to promote their professional knowledge for these duties. In order to improve the Tourism Administration, these solutions are deemed necessary : (1) An "office of Tourism," a separate central organization for the Tourism Administration, should be established. (2) The rules pertaining to the government officials should be amended so that the personnel in the organization of Tourism Administration would have a chance to enter into the rank of government official.

      • 영상데이타베이스 구축을 위한 건축설계도면 인식

        이연식,신성윤,김정은 群山大學校基礎科學硏究所 1995 基礎科學硏究 Vol.10 No.-

        This paper proposes an approach to the vectorization and representation of large-size architectural drawing images. The class of drawings considered here is characterized by instances of symbols, character strings and connections. After horizontal and vertical projection of the scanned gray-scale image, symbols, character strings and connection lines are separated using a few simple yet effective generic drawing properties. The approach is based on a modified run-length image representation on a modified run-length image representation and line- by-line processing scheme with a limited amount of image line stored in memory. Within this approach fast algorithms for transformation of a large-size gray-scale image in vector form are suggested. A hierarchical data structure for the representation of these images in vector form, which stores in compact form all the needed information about connected components, segments, and feature points, is suggested. The process steps for obtaining this data structure are described. The experimental results are also shown.

      • KCI등재

        새로운 유사 원자층 증착 방법에 의한 산화막의 형성 및 터널링 자기 접합에의 응용

        한신희,정원철,이장식,김병동,주승기 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.1

        The tunneling barrier is crucial to the overall performance in magnetic tunnel junction. We have suggested a new formation method for the tunnel barrier, which has utilized pseudo atomic layer deposition with sputtering (PALDS). As is well known, all metallic thin films oxidize more or less under atmospheric conditions. With using this property of metallic thin films, we have prepared tunnel barrier by sputtering metallic thin film and exposing it to the oxygen ambience. From transmission electron microscopy (TEM) observation, the formed tunnel barrier has been confirmed to have clear and good interface between magnetic layers and tunnel barrier. From atomic force microscopy (AFM) observation, it has been also confirmed to have low surface roughness. The TMR MRAM cell manufactured using PALDS method has been shown to exhibit typical tunnel resistance of 86 KΩ·μm^2 and TMR ratio of about 40%. The 40% of MR is quite large. It is considered that this value is geometrically enhanced magnetoresistance due to the low junction resistance of MTJ.

      • KCI등재

        불완전 전뇌 허혈후 소생의 백서 모델을 이용한 재관류 뇌혈류량과 허혈성 뇌조직 손상도와의 관계

        서정필,송근정,황태식,정연권,신백효,김승호 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2

        Background: Experimental data indicate that low-flow reperfusion following prolonged cardiocirculatory arrest may aggravate early cerebral microcirculatory reperfusion disorders. We investigated the influence of cerebral reperfusion flow change to the ischemic histopathologic damage of brain tissue after incomplete forebrain ischemia in rats. Materials and method: Anesthetized Sprague-Dawley rats were undergone ligation of both internal carotid artery by microvascular clamp for 10 minutes. After release of the clamp, reperfusion was started with several different flow levels (0, 10, 20, 30, 50, and 100%) of internal carotid artery comparing to pre-clamping phase using flowmeter. After 15minutes of reperfusion, rat brains were prepared by perfusion-fixation with 3% formaldehyde. Under light microscopic examination of Hematoxylin-Eosin stained tissue slide, histopathologic damage was examined at cortex, putamen, and hippocampus regions. Categorical hisotopathologic damage scores were derived in each regions by manual counts of ischemic neurons. Result: The histopathologic damage scores were 0, 10.2±0.5, 7.6±1.5, 5.9±1.4, 5.0±2.8, 3.5±0.7, and 1.0±0.0 in control, 0, 10,20, 30, 50, and 100% reperfusion groups, respectively(p<0.05). Conclusion: Our results showed significant increment of brain histopathologic damage scores along with decreasing amount of cerebral reperfusion flow after incomplete forebrain ischemia. We believe restoration of reperfusion flow to pre-ischemic level would be a critical component in attenuation of brain ischemic damage.

      • 순천·광양지역 삼림식생에 대한 식물사회학적 연구

        김종홍,신정식,윤경원 순천대학교 2000 순천대학교 자연과학논문집 Vol.19 No.1

        The relationship between floristic composition and phytosociological study was investigated from March 1999 to October 1999 in Sunchon and Kwangyang. Depending on physiognomy, actual vegetation map was drawn in 1:25,000 scale. According to Z-M method the surveyed area was classified into seven plant communities, Quercus serrata community, Carpinus laxiflora community, Quercus mongolica community, Pinus densiflora community, Quercus variabilis community, Acer mono community and Pinus koreaiensis afforestation. Whereas the vegetation of Mt. Paegun and Dosolbong is preserved, the others(Duongjuribond, Mt. Yongkae, Kooksabong) are destructed by human interferences.

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