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        검색결과 143

        83.
        2009.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The safety & health can not be accomplished by only one side's effort of labor and management. To establish high level of occupational safety & health system, we have to recognize the extent of participance and need to study about how to keep the labor-management cooperation in good condition. The purpose of this paper is to make better suggestions such as how to improve the labor-management cooperation and how to establish the efficient occupational safety & health law through studying the labor-management cooperation system in the occupational safety & health.
        4,000원
        84.
        2009.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Purpose : To analyze changes of the ocular components by dropping Cyclopentolate Hydrochloride(Cyclogyl 1 %). Methods : 95 Subjects were recruited but 6 subjects who have allergic reaction for any medicine and 21 mmHg over IOP were excluded to prevent any incidence that can take place in the middle of the test. Finally 89 subjects (age of 19.8±2.72 male 34. female 55. 110 eyes) participated in this test. Objective refraction. comeal curvature. anterior chamber depth and axial length were measured for this study. Results : After dropping Cyclogyl 1%, myopia and axial length decreased and anterior chamber depth increased significantly but no significant changes of comeal curvature and comeal astigmatism Even though the change of axial length was statistically significant. the value was slight. There were significant correlations between ACD and axial length(r = 0.639). ACD and SER( -0.434). ACD and comeal curvature(r = 0.164) and. axial length and SER(r = -0.822). axial length and comeal curvature(r = 0.498) under marufest refraction. Also there were sigruficant correlations between ACD and axial length(r = 0.592), ACD and SER(r = -0.416). ACD and corneal curvature(r = 0.158). Correlations between axial length and SER(r = -0.838), axial length and corneal curvature(r = 0.500) under cycloplegic refraction were significant too. ln case of the correlations between the difference of MR-CR ACD and MR-CR axial length, statistically significant correlations were found(r = 0.458) but not between the difference of MR-CR SER and MR-CR axial length, and the difference of MR-CR SER and MR-CR mean-K. Analyzing non-myopic subjects by gender. mean-K, ACD and axial length in male were greater than in female. And mean-K. ACD and axial length in myopic group were greater lhan in non-myopic group. Conclusion : As a result, spherical refraction. SER. ACD and axial length were changed significantly under cycloplegic refraction and change of ACD is found to be the main reason for changing refractive error.
        4,600원
        85.
        2009.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 식물사회학적 방법에 의해 충청북도 충주시 노은면 보련산 일대의 삼림식생을 분류하고 그 환경조건을 해석할 목적으로 실시되었다. 삼림식생은 일본잎갈나무식재림, 상수리나무군락, 소나무군락, 갈참나무군락, 졸참나무 군락, 굴참나무군락, 신갈나무-단풍취군집(신갈나무-철쭉나무군단, 신갈나무-당단풍군목, 신갈나무군강) 등 1개의 식재림군락, 5개의 이차림군락, 1개의 군집으로 구분되었다. 이들 각삼림군락에 대해 종조성과 인위적 영향, 고도, 경사, 지형, 토양의 화학성 등 생육지의 환경조건과의 관계를 해석하였다. 또 군락별로 생활형을 서로 비교하였다. 그 결과 신갈나무-단풍취군집은 식별된 군락 중 가장 안정된 군락으로 판단되었다. 한편 각 군락의 구성종의 우점도에 기본을 둔 집괴 분석의 결과는 식물사회학적 표조작에 의해 구분된 군락구분과 유사하게 나타났다. 진행적 천이가 계속된다면 이 지역의 우점군락은 잠재자연식생인 신갈나무-단풍취군집으로 이행될 것으로 추리되었다.
        4,300원
        86.
        2008.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper analyses the railroad trunk line constructed in the Korea since the end of the 19th century. The analysis consists of the following problematics. 1) The process of the decision of the railroad route 2) The relationship of the location of Eupchi and the stations By clarifying the above, the purpose of this paper is to clarify how the morphology of the city in Korea has been affected by the change in the relationship with Korea and Japan. The Empire of Japan has been reconnoitering the Korea since way before the formal contract for the railroad construction was signed. Therefore, the Empire of Japan had a very good understanding of the actual transportation system when it started the construction of the railroad. The railroad construction was used by the Empire of Japan to empower the control over the Korea. For this reason, the new railroad system was constructed as a different system from the former transportation system and the urban system was also affected. Also the relationship of the western powers and Japan around the turn of the 20th century defined the characteristic of the railway system as a pathway through the Korean peninsular to link Japan to the continent. Moreover, being apprehensive about the friction with the western, Japan located the railway stations to avoid the missionary land properties. This made it clear that the restraint relationship between Japan and the western affected the urban special structure.
        4,900원
        87.
        2008.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        신항과 낙동강 하구역의 접점인 연결잔교를 통해 소통되는 해수의 수리적인 특성을 파악하기 위하여 연결잔교부에서 현장관측을 실시하고 두 해역간의 상호작용을 해석하고자 하였다. 현장조사 결과로서 연결잔교상의 최대 유속은 1차관측시 13.18 cm/sec, 2차관측시 30.80 cm/sec를 나타내었다. 해수소통량 계산결과는 1차 관측기간 동안 단위시간당 해수소통량은 184.71 m3/sce이고, 잔차해수소통량은 59.74 m3/sec로 신항만에서 낙동강 하구역 방향으로 유출되었다. 또한 2차 관측기간 동안 단위시간당 해수소통량은 331.15 m3/sec이고, 잔차해수소통량은 28.88 m3/sec로 낙동강 하구역에서 신항만 방향으로 유출되었다.
        4,000원
        88.
        2008.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        과적차량은 도로 및 교량 구조물과 도로 횡단 시설물 등에 손상요인으로 작용하므로 시설물의 내구성을 단축시켜 이에 따른 유지보수 비용을 증가시킨다. 기존의 단속 시스템은 많은 문제점을 내포하고 있어서 이에 대한 대처방안이 요구되고 있다. 이에 따라, 본 논문에서는 주행중인 과적차량의 지능형 무인과적 단속 시스템 개발을 위하여 유비쿼터스 센서네트워크 시스템을 구성하고, 무선통신프로토콜을 통한 실내성능실험으로 축중 WIM센서 선정, 하중 및 온도에 따른 변수, 자율공간 송수신 거리 실험을 통해 U-도로 과적차량 무인관리 시스템의 가능성을 검토하였다. 그리고 고속 주행 상태에서도 차량의 하중 측정이 가능한 High Speed WIM Sensor의 성능에 대해 검증하였다. 또한 USN구성을 위한 센서의 무선화 테스트를 실시하였다. 본 연구에서 실시한 실험은 기본적으로 고속 WIM센서와 함께 USN의 구성과 Internal/External Network의 완전 무인, 무선화 시스템을 통한 사용자 중심의 시스템을 구축하는 것이 최종 목적이므로 향후 WCDMA/HSDPA를 이용한 External Network의 구성과 실제 과적 단속 적용을 위하여 Test Bed를 통한 실험이 실시되어야 할 것이다.
        4,000원
        89.
        2008.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 최근 11년간 (1996년~2006년)의 낙동강 하구둑 방류량 자료를 바탕으로 하구둑 방류량의 경년변동 및 월별특성 즉, 낙동강 하구둑 월별총방류량, 일일평한방류량, 일일최대방류량을 산출하였으며, 하구둑 방류와 하천수 유입에 직접적인 영향을 미치는 기상인자들과의 상관성을 검토하였다. 본 연구를 통해 얻어진 결과는 다음과 같다. (1) 낙동강 하구둑으로부터의 11년간 총 방류량은 224,576.8×106m3이며 가장많이 방류된 연도는 2003년으로 56,292.3×106m3이다. 월별로는 8월이 23.4%의 52,634.2×106m3으로 가장 많고 7월이 23.1%, 9월이 17.0%의 순이었다. (2) 방류량 패턴을 시기별로 살펴보면 7~9월은 유하량이 많은 홍수기(방류란 100×106m3/day이상), 4~6월 및 10월은 유하량이 보통수준인 평수기(방류량 30×106m3/day이상), 12~3월은 유하량이 적은 갈수기(방류량 16×106m3/dayy미만)로 구분할 수 있다. (3) 방류량과 기상인자와의 상관성 비교에 있어서는 대체로 기온이 높고 증발량이 적으며 일조시간이 적은 시기에 많은 방류가 이루어짐을 알 수 있다 (4) 방류량이 많을 경우 주 풍향은 NNE 및 SW, SSW 였다. 이러한 결과는 풍항에 따른 취송류의 영향으로 북풍이 불 경우 담수의 하구 집적화와 남풍이 불 경우 담수가 외해로 유출될 가능성이 높음을 시사한다.
        4,000원
        90.
        2008.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study demonstrated the effects of extracts from the mushroom Keumsa sangwhang(Phellinus linteus) (KPLE) on fasting glucose and cholesterol levels in human blood. In this double-blind, placebo-controlled human intervention study, healthy volunteers were randomized to receive 3.3 g of KPLE (n=31) or placebo (n=31) per day by oral administration for 8 weeks. The cholesterol and fasting serum glucose levels were evaluated before and after treatment. The fasting serum glucose level was significantly decreased by KPLE administration (p<0.01), but the total cholesterol, triglyceride, HDLcholesterol and LDL-cholesterol concentrations did not change. This study suggests a possibility that KPLE may be useful as a functional food for the prevention of diabetes mellitus.
        4,000원
        92.
        2007.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to examine the planning principles and historical meaning of Eupchi constructed during the Joseon Dynasty. I investigated the general character of Eupchi based on analyses of published materials from the Joseon Dynasty. The Joseon Dynasty, which started in 1392, set up Eupchi in a position to effectively govern the whole country. Eupchi was differentiated from the surrounding villages, and became the center of administration and education. Eupchi was established based on techniques taken from the capital. Following precedence in the capital, Eupchi was transformed with spaces for Confucian ceremonies. The cityscape of Eupchi was also differentiated from the surrounding villages. Such transformation of Eupchi represents the progress of urbanization. The developments found in Eupchi spread around Korea, and mark an important stage in the historical evolution of Korean urbanization. The Joseon Dynsasty used similar techniques from the capital to establish Eupchi. However, I found some differences between Eupchi and the capital. The Joseon Dynasty recognized that walls could protect not only the capital city but also the country from foreign enemies. Protective walls were required for a capital, but not for Eupchi. In addition, Eupchi did not have commercial institutions supported by the Dynasty. This further demonstrates that different planning principles were used at Eupchi.
        5,200원
        93.
        2007.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        It is well known that thermal plasma process has lots of advantages such as high temperature and good quality for synthesis of nano particles. In this research, we attempt the synthesis of nano unitary and composite powder (Ag, Mg-Al, Zr-V-Fe) using transferred thermal plasma. Nano particles of metal alloy, ranging from 20 nm to 150 nm, have been synthesized by this process.
        4,000원
        97.
        2006.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was to suggest the necessity of depth research in order to enhance the effectiveness of technical consulting system. And the purpose of this study was to decrease the construction accidents to some extent, being on the increase day by day as it takes issue properly and suggest a reform measure. As for research method, it executed the collection of public opinions widely and questionnaire with the bibliography, expert of construction safety, the related institutions, academic world, safety association, and director of construction site. Also, it was to suggest the reform measure by the stage, classifying the problems on the system and operation by 4 stages like a stage of delivery of subscription and supervision, a stage of contract with guidance of technology, a stage of executing the guidance work of technology, and a stage of performance of advice.
        5,500원
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