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      • KCI등재

        지역 스포츠이벤트의 경제적 파급효과 분석에 관한 연구

        송석록(Sok Rok Song),이재우(Jae Woo Lee),이달원(Dal Won Lee) 한국사회체육학회 2007 한국사회체육학회지 Vol.0 No.31

        The purpose of this study was to analyze the economic impact of sports event as a part of sports marketing strategies of local city. To reach the purpose, Index of S city for 6 years - number of the sports events, public investment, survey for consumption, and Input-Output analysis. - were researched. S city held most sports event with 8 in 2001 and invested 14.8 million won. The most investment was 39.6 million won with 4 Sports events in 2003. The Production inducing effect reached 2,019 million won in 2001, 3,054 million won in 2002, 3,091 million won in 2003, 538 million won in 2004, 542 million won in 2005 and 1,548 million won in 2006. The highest income inducing effect was 862 million won in 2002 with 7 sports events, the employment inducing effect was calculated to 95 persons in 2002 and 94 persons in 2003, and the valued-added inducing effect was 1,738 million won in 2002. The most economic effects were higher than the average effects of whole other industries in Gangwondo which imply that the in S city held sports events contribute to regional development and more regional sports marketing.

      • 행렬의 개념 지도방법

        박달원,이현복 공주대학교 사범대학 과학교육연구소 1995 과학교육연구 Vol.26 No.1

        행렬은 비교적 복잡한 형태로 이미 존재하는 개념에 대한 축약적인 표현이며 행렬은 일차변환으로부터 발생된 개념이다. 실제세계에서의 구체적이니 자료로부터 비형식적인 이론과 형식적인 이론으로의 진전을 포함하는 형식화와 공리화의 과정을 겪게 하는 진정한 의미에서의 수학화를 학생들이 배우도록 하기 위하여 행렬은 일차변환으로부터 지도가 시작되어야 한다. Matrices is a compact expression for idea which already exist in more expanded from. Matrices arose in the linear transformations. In order that students learn mathematization in genuine meaning that is experience formalization and axiomatization process including advance from concrete materials in real world to non-formal theory and formal theory, teaching of matrices should start from linear transformations.

      • 한국 근대사에 있어서 체육의 역할(Ⅰ) : 학교체육을 중심으로 with school physical education as the central figure

        이달원,조연철 啓明大學校 生活科學硏究所 1997 科學論集 Vol.23 No.-

        This thesis treated with the role of school physical education in korean modern history. The modern schools been established by pioneer or christian missionary since the end of seventeenth century have taken advantage of physical education for the sake of the retrieval of national prestige and wealthy country and a powerful army and have developed the racial physical education. These schools of various kinds have set the goal at knowledge, virtue and physical education of education and especially have valued much of physical education. The general gymnastics and military drill as the method of physical education practice were enforced separately but it treaded toward military character. As the method of physical education active, it was activated through athletic meet this day and the field day also exhibited the military organization and march. The filed day was supported greatly from Emperor and the queen to the general public, facility expenses and awarding prizes were appropriated local expenses in the government schools and appropriated the volunteers in the private schools, and whole general public participated positively in the rule of Japan since. Japan was afraid of a movement in the public because of anti-Japanese sentiment by the Japanese annexation and the dark ages came by instructions of abolition of the each union filed day.

      • KCI등재
      • 변압기의 유동대전에 대한 유속 및 유온의 영향에 관한 연구

        정원용,고희석,박상현,박재윤,김정달 慶南大學校 附設 工業技術硏究所 1992 硏究論文集 Vol.10 No.-

        本 硏究에서는 固體-液體 界面에서 液體가 流動할 때 발생되는 유동대전에 대한 硏究로서 大容量 變壓器내에서 絶緣油가 통과하는 通路를 모델링한 帶電 파이프를 設計·製作하고 대전 파이프내의 油路形狀에 따른 流動電流를 側定·分析하였다. 이러한 實驗으로부터 얻은 결과는 다음과 같다. 1) 流動電流는 油速의 增加에 따라 線形的으로 增加하였으며, 油溫의 增加에 따라 약 46[℃]이하에서는 增加하고 그 이상에서는 感少한다. 2) 絶緣油의 흐름이 원활하게 되도록 油路形狀을 변화시키면 流動電流는 感少한다. In this paper, the streaming electrification generated at a solid-liquid interface is studied. Electrification pipe modeled on the oil path of the high power transformer is designed and manufactured. The Streaming current is measured as a function of oil velosity, temperature at each electrification pipe. From the result of this study the following conclusions are obtained. 1) The streaming current increases linearly with increasing of oil velocity and It increases at lower temperature than 46[℃]and decreases at higher temperature than 46[℃] 2) The smoother the flow of insulating oil is the less the streaming current decreases.

      • KCI등재

        현장계측에 의한 농업용저수지 제체의 안정관리기법

        이달원,오범환 충남대학교 농업과학연구소 2003 농업과학연구 Vol.30 No.2

        본 연구는 연약지반상에 축조되는 농업용 저수지의 합리적인 안정관리의 기준을 수립하기 위하여 현장게측결과를 기초로 시공중 또는 완공후에 측방유동 등으로 인하여 국부적인 전단파괴 가능성을 현장계측치로부터 비교분석하여 다음과 같은 결론을 얻었다. 1. 한계평형법에 의해 안전율을 비교하면 Spencer방법과 간이 Bishop방법은 거의 유사하게 나타났고, 간이 Janbu 방법은 약간 작게 나타났다. Spencer방법은 흙의 활동부분에 대해 힘과 모멘트 두 평형방정식을 만족시키는 해석방법이므로 저수지의 안정성을 해석하는데는 합리적이라 판단된다. 2. 수평변위는 물리적 성질의 변곡점이 형성되는 부분에서 급증하였고, 성토의 안정관리는 각 토층의 경계부분에서 가장 불안정한 상태로 나타나므로 분석시 가장 우선적으로 검토하여야 한다. 3. 수평변위속도에 의한 안정성 평가방법은 파괴 가능성을 미리 예측하는데 상당히 효율적인 방법이라고 판단되고, 전단파괴 가능성이 높은 무처리지반에서의 안전율의 기준은 처리지반보다도 신중하게 선정하여야 할 것으로 판단된다. 4. 점증하중에 의한 시공중 안정성을 계측자료를 이용하여 분석한 결과, 파괴기준선에 접근하여 위험가능성이 있는 부분도 있었으나 성토체는 안정한 것으로 확인되어 안정관리상 파괴기준선으로 안정성을 평가하는 것보다는 곡선의 기울기로 판단하는 것이 합리적이다. This study was performed to suggest a rational method for the stability evaluation of agricultural reservoir in the very soft ground. The stability methods for agricultural reservoir was used to compare and analyze with various condition by limit equilibrium method. The behavior of settlement-displacement obtained by field monitoring system was used to compare and analyze with various stability methods, and to investigate the applicability of the methods for stability evaluation of agricultural reservoir. The horizontal displacement was abruptly increased when physical properties of soft clay reached its maximum values and therefore, the values of these properties could be used to the fundamental data for stability evaluation. The evaluation of the stability of agricultural reservoir was suggested to use the inclination of curve rather than critical line.

      • Representation of bounded Linear Operators on Reproducing Kernel Hilbert Space

        변두원,이성희,박달원,노영순,김승동 공주대학교 과학교육연구소 2001 과학교육연구 Vol.32 No.1

        재생핵 힐버트공간에서 유계인 작용소는 어떤 적분변환의 형태로 표시된다. 또한 재생핵을 이용하여 어떤 적분변환의 형태가 유계인 작용소이기 위한 필요충분조건을 구한다. The bounded linear operators on a reproducing kernel Hilbert space can be represented in the form of generalized integral transform. Also, they are completely characterized by integral kernels.

      • 活性炭을 利用한 CYANIDE錯陰이온의 吸着特性에 關한 硏究

        李時元,金達漢 부산교육대학교 과학교육연구소 1991 科學敎育硏究 Vol.16 No.-

        The adsorption characteristics of complex anion compose of cadmium ion and cyanide ion on activated carbon from coconut shell by steam activation has been studied. From the adsortion of cadmium ion on activated carbon in the presence of cyanide ion, it was found that the following results; 1) Cadmium ion was adsorbed on activated carbon in the from of complex anion such as Cd (CN)_4^(2-). 2) The adsorption of cadmium cyanide compex anion was governed primarily by pCN and amount of adsorption increase with increaing cyanide ion : Cd^(2+) ratio. 3) In the case of lower concentration, the adsorption isotherms were found to conform with the Freundlich equation, but the other range was approximately expressed by q = 1.97C/1+0.45C^0.8

      • KCI등재

        초고진공용 주사형 터널링 현미경의 제작

        김달현,박해원,이세경,구자용,김구영 韓國非破壞檢査學會 1994 한국비파괴검사학회지 Vol.14 No.3

        진공도가 10-¹¹Torr 수준의 초고진공 상태에서 작동되고 실제공간에서 개별원자를 구별할 수 있는 주사형 터널링 현미경을 제작하였다. 주사형 터널링 현미경의 배경 및 작동원리와 제작에 있어서의 제문제점들을 서술하고 흑연결정과 실리콘에 대해서 관찰한 결과를 보고한다. A scanning tunneling microscope has been built, which can resolve atomic arrangements of conductors and semiconductors in ultra high vacuum below 10-¹¹Torr. Its background operational principles are reviewed and the guide lines in building the scanning tunneling microscope are shown. The results of measurements for highly oriented pyrolytic graphite and Si(111) surface are presented

      • ebXML 기반 자동차 부품업의 B2B 포털

        이달상,빈상원 동의대학교 산업기술개발연구소 2005 産業技術硏究誌 Vol.19 No.-

        The most of the international car manufactures and dealers see ebXML as the best choice to replace a costly process of document exchange that relies on conventional EDI, often in conjunction with satellite services. And the first tier group of suppliers will be more important in that the modularity policy of automobile industry. The business-collaboration standard goes beyond specifying how information should be distributed, adding reliability and security specifications to the documents as messages are exchanged with business partners across the web. In this paper, we propose the B2B portal of automobile parts manufactures using the ebXML that we developed system contents, input, output and flow of business documents based on the standard electronic documents registered in REMKO(Resistry & Depository of ebXML in Korea). The proposed system can provide the renew and service of information beyond the time and space, in that, the XML technology standard and EDI structure are used. In collaborative operationality, the proposed system will support the unity and cooperative of documents and keep the latest and accuracy of information.

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