• 제목/요약/키워드: Local Base

검색결과 828건 처리시간 0.029초

분산환경에서 혼용 뷰 관리기법을 채택한 이질적인 멀티데이타베이스 상호운용 모델 설계 (A Design of Model for Interoperability in Heterogeneous Multi-Database Adopting Mixed View Management Mechanism on Distributed Environments)

  • 이승용;박재복;김명희;주수종
    • 정보처리학회논문지D
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    • 제12D권4호
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    • pp.531-542
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    • 2005
  • 본 논문에서는 이질 환경의 지역 데이터베이스 시스템(Local DataBase System: LDBS)을 분산 시스템 형태로 통합하고 전역 사용자에게 빠른 질의 처리를 제공하는 멀티 데이터베이스 관리 시스템(Multi-DataBase Management System: MDBMS)을 제안한다. 이를 위해 MDBMS의 구성 요소들의 기능을 정의하고 그들 간의 상호작용을 설계한다 또한, 구성요소 중 전역 뷰 관리자 관점에서 전역 질의에 대한 결과 정보가 전역 뷰 저장소에 모두 저장되어 있는 경우. 전혀 없는 경우, 그리고 일부 저장되어 있는 경우를 비교하여 객체간의 인터페이스 및 메소드 호출에 따른 시퀀스 다이아그램을 통하여 본 시스템의 기능을 정립한다. 마지막으로, 정립된 기능을 토대로 예제 질의를 이용한 각 기능들의 수행과정을 나타내어 구체적으로 설계된 모델을 제안한다.

Inelastic behavior of systems with flexible base

  • Fernandez-Sola, Luciano R.;Huerta-E catl, Juan E.
    • Earthquakes and Structures
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    • 제14권5호
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    • pp.411-424
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    • 2018
  • This study explores the inelastic behavior of systems with flexible base. The use of a single degree of freedom system (ESDOF) with equivalent ductility to represent the response of flexible base systems is discussed. Two different equations to compute equivalent ductility are proposed, one which includes the contribution of rigid body components, and other based on the overstrength of the structure. In order to asses the accuracy of ESDOF approach with the proposed equations, the behavior of a 10-story regular building with reinforced concrete (RC) moment resisting frames is studied. Local and global ductility capacity and demands are used to study the modifications introduced by base flexibility. Three soil types are considered with shear wave velocities of 70, 100 and 250 m/s. Soil-foundation stiffness is included with a set of springs on the base (impedance functions). Capacity curves of the building are computed with pushover analysis. In addition, non linear time history analysis are used to asses the ductility demands. Results show that ductility capacity of the soil-structure system including rigid body components is reduced. Base flexibility does not modify neither yield and maximum base shear. Equivalent ductility estimated with the proposed equations is fits better the results of the numerical model than the one considering elastoplastic behavior. Modification of beams ductility demand due to base flexibility are not constant within the structure. Some elements experience reduced ductility demands while other elements experience increments when flexible base is considered. Soil structure interaction produces changes in the relation between yield strength reduction factor and structure ductility demand. These changes are dependent on the spectral shape and the period of the system with fixed and flexible base.

유한요소해석을 이용한 강선요트의 국부강도 평가 (Estimation about Local Strength using FE-Analysis for Steel Yacht)

  • 박주신;고재용
    • 해양환경안전학회지
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    • 제11권2호
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    • pp.77-82
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    • 2005
  • 지금까지 국내에서 제작된 요트는 선체의 재질이 FRP로 제작되어 왔으나 FRP는 환경오염 및 해양안전에 관한 법규 규제가 강화되고 있는 국제사회의 인식에 따라 중소형 조선소를 중심으로 강철 재료나 알루미늄 재료들 사용한 선박건조로 변화하고 있는 실정이다. 강선요트의 구조상 강선재료를 주로 사용함으로서 여러 가지 강도적인 측면에 대한 검토가 필요하지만, 소형선박이므로 종강도, 횡강도 부분은 규정에서의 허용 응력치에 안전율(Safe Factor)만을 주어서 설계를 하여도 충분히 안정된 구조를 이를 수가 있다. 그러나, 소형선박에서 가장 문제시되는 것은 국부강도(Local Strength)의 평가이다. 본 구조해석에서는 선수에 작용하는 슬래밍 동작하중 및 선수충격에 의한 선수부의 손상 여부와 선수부의 국부강도 만족 여부를 확인하고, 기관받침(Engine bed) 부분에서의 중량하중과 횡파하중에 대한 검토를 수행하였다.

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주거복지 전달체계에서 커뮤니티의 역할에 대한 탐색적 연구 (An Exploratory Study on Role of Community in Supply System of Housing Welfare Service)

  • 박근석;주관수
    • 토지주택연구
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    • 제7권2호
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    • pp.103-111
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    • 2016
  • 주택정책의 패러다임이 주택공급에서 주거복지로 빠르게 전화됨에 따라 주택물량 확대 정책에서 맞춤형 주거복지정책으로 개편이 필요하여 '주거기본법'이 새로이 제정되었다. 법에서는 주거복지 전달체계에서 주거복지센터의 역할을 규정하였으나, 현재의 주거복지센터로는 숫자나 인력 면에서 그 역할을 담당하기 어렵다. 따라서 주거복지 전달체계의 바람직한 모델은 지역에서 주거복지 수요를 발굴하여 지자체나 인근 주거복지센터 및 관련된 지역 민간기관 등으로 연계하여 주거복지 서비스를 제공받도록 하는 방안이 효율적인 모델로 보인다. 이렇게 하기 위해서는 지역별 커뮤니티를 구축하여 지역 공동체 활성화를 추구함과 동시에 주거복지 서비스 수요를 발굴하는 방안으로 나가는 방향이 필요할 것으로 보인다. 본 연구는 한계는 있지만 이론 및 기존의 연구에 근거하여 주거복지 전달체계에서 커뮤니티의 역할에 대하여 제안한 탐색적 연구이며, 기존에는 없던 연구의 시도라는데 그 의의가 있다고 할 수 있다.

지방자치단체 도서관 행정조직의 분석적 연구 - 경기도를 중심으로 - (An Analytical Study of Library Administrative Organization in Local Governments - Focused on Gyeonggi Province -)

  • 김홍렬;조현양
    • 한국도서관정보학회지
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    • 제45권3호
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    • pp.349-369
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    • 2014
  • 본 연구는 경기도 31개 지방자치단체 도서관 행정조직의 편성과 운영형태를 조사하여 문제점을 제시하고, 이를 토대로 도서관 행정조직체계의 개선방안을 제시하고자 한다. 분석결과 본청에 직속으로 편성된 도서관 조직은 거의 없었으며, 대부분 사업소 등의 외청으로 편성되어 있었다. 또한 도서관 관련 조직이 도서관사업소 등의 독립적인 조직으로 구성되어 있는 경우도 있지만, 타 업무나 조직 하에 배속되어 있는 경우가 매우 많았으며 셋째, 해당 지방자치단체의 봉사대상 인구수나 도서관 직원 수, 도서관 수를 감안했을 때 이에 부합하지 않는 직급의 도서관 행정조직을 구성한 곳도 많았다. 넷째, 도서관 정책담당 부서의 설치가 미비하였다. 다섯째, 도서관 운영체제(중앙관-거점관-분관)가 효율적으로 구성되지 못하였다.

Design and analytical evaluation of a fuzzy proxy caching for wireless internet

  • Bae, Ihn-Han
    • Journal of the Korean Data and Information Science Society
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    • 제20권6호
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    • pp.1177-1190
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    • 2009
  • In this paper, we propose a fuzzy proxy cache scheme for caching web documents in mobile base stations. In this scheme, a mobile cache model is used to facilitate data caching and data replication. Using the proposed cache scheme, the individual proxy in the base station makes cache decisions based solely on its local knowledge of the global cache state so that the entire wireless proxy cache system can be effectively managed without centralized control. To improve the performance of proxy caching, the proposed cache scheme predicts the direction of movement of mobile hosts, and uses various cache methods for neighboring proxy servers according to the fuzzy-logic-based control rules based on the membership degree of the mobile host. The performance of our cache scheme is evaluated analytically in terms of average response delay and average energy cost, and is compared with that of other mobile cache schemes.

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경부종괴 양상으로 나타난 뇌기저부 혈관주위세포종 1례 (A Case of Skull Base Hemangiopericytoma Presenting as Neck Mass)

  • 김영민;문유보;안혜경
    • 대한두경부종양학회지
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    • 제9권2호
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    • pp.221-226
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    • 1993
  • Hamangiopericytoma, first described by Stout & Murray in 1942, is a rare vascular tumor composed of spindle-shaped or rounded cells proliferating around endothelial lined capillaries. These proliferating cells were belived to arise from the pericytes of Zimmerman. Histologically, this tumor demonstrates great variability and clinical course cannot be predicted from the histological appearance. Head and Neck hemangiopericytoma appears to have a lower grade malignancy with frequent local recurrency and metastasis, therefore, aggressive surgical therapy should be the treatment of choice. We experienced a case of hemangiopericytoma occurred in the right skull base at submastoideal and suboccipital area presenting as neck mass in upper occipital triangle in a 42 years old female patient and we report it with a review of literatures.

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향토음식의 산업화가치 평가를 위한 지표 개발 연구 (Development of Evaluation Indicators for Industrialization of Local Cuisine)

  • 최정숙;박한식;박승현;이진영;강민숙
    • 한국식생활문화학회지
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    • 제27권3호
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    • pp.233-239
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    • 2012
  • The purpose of this study was to develop an evaluation indicator for the industrialization of local cuisine. We conducted a literature study, interviews with experts, and a Delphi survey. The resulting evaluation indicator was divided into four groups and nine sub-groups. The four groups were locality, taste and functionality, industrial base, and business value. The nine sub-groups were traditionality, regionality, eating quality, nutrition and functionality, condition of development, technological level, rights and policy, marketability, and ripple effects. Also 22 items were created as indicators for evaluating classes ; historicity, sustainability, rarity, awareness of local resident, the number of similar restaurant, appearance, taste, nutritional balance, health functionality, availability of raw materials, suitability of environmental exchange of market, standardization of recipe, simplification of recipe, storability, intellectual property rights, government's policy, appropriacy of price, popularization, possibility of franchise, globalization, improvement of local image, vitalization of local economy. The four most important classes corresponded to one of the four groups. These classes were sustainability, taste, state (local autonomy) policy, vitalization of local economy. The implications of this study are that the possibility of industrializing the local cuisine of each region can be evaluated and applied. Moreover, these indicators could promote the discovery of local cuisines, support planning for the commercialization of local cuisine.

The impact of radiotherapy on clinical outcomes in parameningeal rhabdomyosarcoma

  • Choi, Yunseon;Lim, Do Hoon
    • Radiation Oncology Journal
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    • 제34권4호
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    • pp.290-296
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    • 2016
  • Purpose: Radiotherapy (RT) is considered a mainstay of treatment in parameningeal rhabdomyosarcoma (PM-RMS). We aim to determine the treatment outcomes and prognostic factors for PM-RMS patients who treated with RT. In addition, we tried to evaluate the adequate dose and timing of RT. Materials and Methods: Twenty-two patients with PM-RMS from 1995 to 2013 were evaluated. Seven patients had intracranial extension (ICE) and 17 patients had skull base bony erosion (SBBE). Five patients showed distant metastases at the time of diagnosis. All patients underwent chemotherapy and RT. The median radiation dose was 50.4 Gy (range, 40.0 to 56.0 Gy). Results: The median follow-up was 28.7 months. Twelve patients (54.5%) experienced failure after treatment; 4 local, 2 regional, and 6 distant failures. The 5-year local control (LC) and overall survival (OS) were 77.7% and 38.5%, respectively. The 5-year OS rate was 50.8% for patients without distant metastases and 0% for patients with metastases (p < 0.001). Radiation dose (<50 Gy vs. ${\geq}50Gy$) did not compromise the LC (p = 0.645). However, LC was affected by ICE (p = 0.031). Delayed administration (>22 weeks) of RT was related to a higher rate of local failure (40.0%). Conclusion: RT resulted in a higher rate of local control in PM-RMS. However, it was not extended to survival outcome. A more effective treatment for PM-RMS is warranted.

국소마취제(局所麻醉劑)가 Sulfanilamide의 직장내(直腸內) 흡수(吸收)에 미치는 영향 (The Influence of the Local Anesthetics on the Absorption of Sulfanilamide through the Rectum)

  • 하춘자;이진환;최준식
    • 대한약리학회지
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    • 제9권1호
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    • pp.53-58
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    • 1973
  • Author attempts to determine the absorption of the sulfanilamide by the various suppositorial bases contained the local anesthetics through the rectum of the rabbit. The types of bases examined are four of lipophillic, hydrophillic and emulsion types such as oil in water and water in oil, otherwise the local anesthetics are procaine and lidocaine each other 2 and 20 percent in a suppository. The results are as follows; 1. The absorption of sulfanilamide is higher when they are combined with the local anesthetics than when single drugs of them are used. 2. The promotion of absorption by the local anesthetics, both the procaine and lidocaine, are higher when they are used 20 percent than 2 percent as the concentration. 3. In excellency of the suppositorial base, the order of the blood level is polyethylene glycol, oil in water, water in oil as emulson type and cacao butter.

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