• 제목/요약/키워드: minimum foundation

검색결과 165건 처리시간 0.023초

소규모 탐사단면에 대한 탄성파 토모그래피의 현장 적용 한계성 연구 (A Study on the Limitations in the Field Application of Seismic Mini-tomography)

  • 김중열;김유성;현혜자;김기석
    • 지질공학
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    • 제6권1호
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    • pp.15-22
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    • 1996
  • 국내 현장탐사에서 관찰되는 탄성파의 주파수 내용은 대부분의 경우 4kHz(파장 약 1m 내외)을 넘지 않고 있다.이러한 한정된 주파수 내용은 탄성파를 이용한 토모그래픽 응용 측면에서 우선 탐사단면에 대한 규모가 제한될 뿐만 아니라 토모그램(주시역해결과)분해성능에서도 근원적인 제약을 수반하게 하는 것이다. 따라거 본 논문은 현장실험을 통하여 이와 같은 소규모 단면 측정에서 대두되는 제반 문제점(예 : 트리거 주시지연 현상,수진기의 수의 극대화,샘플링의 고분해화(1/32ms 이내),발생원 구사의 일관성, 타당한 격자 크기 선정)을 구체화하고 있으며 동시에 그에 따른 현장응용 실례를 보여주고 있다.국내 현장실험은 콘크리트 구조물 철로교각을 대상으로 수행도었으며 그 결과는 독일 성당 종각 석조 기초구조물을 대상으로 얻게된 탐사결과와 상호비교하였다.

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영국의 NHS 병원약사 수련 현황 (NHS Hospital Pharmacist Training Programme in UK)

  • 김윤정
    • 한국임상약학회지
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    • 제25권4호
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    • pp.209-215
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    • 2015
  • The aim of the research was to explore post-registration training opportunities for NHS hospital pharmacists which contributes to promote structural reform of the professional development and lifelong learning for Korean hospital pharmacists. In UK, all pharmacists are required to complete at least 9 Continuing Professional Development (CPD) entries per each year to maintain their professional registration. Types of accredited postgraduate qualification (part-time) in Pharmacy Practice available for hospital pharmacists are Postgraduate Certificate (PgCert, year 1), Postgraduate Diploma (PgDip, year 2), Master of Science (MSc year 3), and Professional Doctorate in Pharmacy programme (DPharm, 4-5 years or more). Clinical pharmacy diploma is more likely to become a minimum qualification in order to progress whilst working for the NHS. Pharmacy independent prescribers are allowed to prescribe all medications except cocaine, dipipanone, and diamorphine for the purpose of treating addiction within their competencies. NHS pharmacists are also classified by band point system depending on their practical/clinical knowledge and skills which starting from band 5 (Pre-registration pharmacist) up to band 9. Various learning and development options are also offered including teaching sessions, conferences and local forums.

추계론적 유한요소법을 이용한 지반의 부등침하 신뢰도 해석 (Reliability Analysis of Differential Settlement Using Stochastic FEM)

  • 이인모;이형주
    • 한국지반공학회지:지반
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    • 제4권3호
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    • pp.19-26
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    • 1988
  • 본 논문에서는 기초지반의 부등침하를 해석하기 위하여 추계론적 수치해석 방법을 사용하였다. 부등침하는 토질탄성계수의 공간적 변화와 밀접한 관계를 갖고 있다. Kriging 이론은 탄성계수의 공간적 변화를 설명하기 위하여 사용되었다. 이 방법은 선형최적불편추정기법으로 제한된 자료로 부터 최소의 분산을 가진 추정값을 구할 수 있다. 추계론적 유한요소법을 이용하여 일차근사 2차모멘트 기법으로 변위의 평균값과 분산값 그리고 공분산값을 구한다. 최종적으로 부등침하의 신뢰도모델이 제시되었다. 해석결과 두 기초사이의 거리와 탄성계수의 수평방향 변동거리가 거의 같을 때 최대부 등침하량이 일어난다는 것과 이 때 부등침하량이 허용간을 넋을 확률이 상당히 크다는 것이 밝혀 졌다.

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An Analysis of Actual States of the Nursing Grade of Medical Institutions

  • Park, Hyun-Suk
    • 한국임상보건과학회지
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    • 제2권3호
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    • pp.158-166
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    • 2014
  • Purpose. This study pursued the way for the effective application of the differentiated charge (Nursing grading system) by the nursing manpower which is performed for the nursing service quality improvement to the in-patients in Korea and the minimum employment problem solution of nurses. Methods. For this matter, the status of the nursing grade for 1,452 hospitals (44 high class general hospitals, 259 general hospitals, 265 hospitals, 59 oriental medicine hospitals and 825 recuperation hospitals) was identified which were registered in the Health Insurance Review and Assessment Service in March 2011 status quo. Results. In the most nursing grade by the kind of medical institutions, 70.5% of the nurses were third-graded in upper general hospitals, 38.1% were sixth graded in general hospitals, 62.7% were seventh-graded in oriental medicine hospitals and 40.4% were first-graded in recuperation hospitals. In the nursing grade by the scale of hospitals (in terms of the number of beds), there was a significant difference in general hospitals, but there was no significant difference between oriental medicine hospitals and recuperation hospitals. In the nursing grade by the location of hospitals and the foundation type of hospitals, there was a significant difference between general hospitals and recuperation hospitals. Conclusion. For the effectiveness of applying differentiated nursing fees by the number of nurses, it seems necessary to consider adjusting the present differentiated inpatient-charge system for the better so that small and medium-sized hospitals may induce more nurses.

3 패드 가스 포일 저널 베어링의 프리로드 증가에 따른 성능 해석 (Analysis of Three-Pad Gas Foil Journal Bearing for Increasing Mechanical Preloads)

  • 이종성;김태호
    • Tribology and Lubricants
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    • 제30권1호
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    • pp.1-8
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    • 2014
  • In this study, a three-pad gas foil journal bearing with a diameter of 40 mm and an axial length of 35 mm was modeled to predict the static and dynamic performances with regard to an increasing mechanical preload. The Reynolds equation for an isothermal and isoviscous ideal gas was coupled with a simple elastic foundation foil model to calculate the hydrodynamic pressure solution iteratively. In the prediction results, the journal eccentricity, journal attitude angle, and minimum film thickness decreased, but the friction torque increased with the preload. A quick comparison implied a lower load capacity but higher stability for a three-pad gas foil bearing compared to a one-pad gas foil journal bearing. The direct stiffness coefficients increased with the preload, but the cross-coupled stiffness coefficients decreased. The direct damping coefficient increased in the horizontal direction but decreased in the vertical direction as the preload increased. These model predictions will be useful as a benchmark against experimental test data.

Overview of Vietnamese traditional medicine

  • Trinh Hien Trung
    • 식품기술
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    • 제18권3호
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    • pp.91-97
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    • 2005
  • Nowaday, in Vietnam there are two types of medical services which have coexisted. These are Western medicine or Tay Y and Eastern medicine or Dong Y (this is also known as Oriental medicine). Dong Y is includes Chinese traditional medicine (TCM) or Thuoc Bac and Vietnamese traditional medicine (TVM) or Thuoc nam. In its’ history, Vietnam was dominated by feudal China in more than 1000 years, so that Vietnamese people was impacted much by Chinese thought, culture and medicine of course. Traditional Chinese and Traditional Vietnamese Medicine differ in practice, though they share the same theoretical foundation. Their relationship can be observed by the influence of TCM theories on the TVM which are Yin and Yang, Five Elements. In practice, TCM practitioners usually spend more time giving their patients a sort of theoretical explanation of what's going on, whereas TVM practitioners would use a more practical approach and concentrate less on theory. TVM was popular in common life of working people, generally using ingredients readily available nearby and involving a minimum of processing. Most knowledge was passed unselfconsciously from one generation to the next. It can be said that Vietnamese people are based on theories of TCM and available tropical plant sand animals native to Vietnam to built and develop TVM with it’s own character. The following are some plants are using in normal life of Vietnamese people as food or drink with well-being effect(1,2).

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Structural performance assessment of fixed offshore platform based on in-place analysis

  • Raheem, Shehata E. Abdel;Aal, Elsayed M. Abdel;AbdelShafy, Aly G.A.;Mansour, Mahmoud H.;Omar, Mohamed
    • Coupled systems mechanics
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    • 제9권5호
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    • pp.433-454
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    • 2020
  • In-place analysis for offshore platforms is essentially required to make proper design for new structures and true assessment for existing structures. The structural integrity of platform components under the maximum and minimum operating loads of environmental conditions is required for risk assessment and inspection plan development. In-place analyses have been executed to check that the structural member with all appurtenances robustness and capability to support the applied loads in either storm condition or operating condition. A nonlinear finite element analysis is adopted for the platform structure above the seabed and the pile-soil interaction to estimate the in-place behavior of a typical fixed offshore platform. The analysis includes interpretation of dynamic design parameters based on the available site-specific data, together with foundation design recommendations for in-place loading conditions. The SACS software is utilized to calculate the natural frequencies of the model and to obtain the response of platform joints according to in-place analysis then the stresses at selected members, as well as their nodal displacements. The directions of environmental loads and water depth variations have important effects on the results of the in-place analysis behavior. The result shows that the in-place analysis is quite crucial for safe design and operation of offshore platform and assessment for existing offshore structures.

Efficacy of Soil Amendment with Medicinal Plant Materials for the Control of Root-knot Nematode (Meloidogyne incognita) in Tomato

  • Kim, Young-Ho;Hafeez, U.Khan;Kim, Jung-Ho;Jeon, Yong-Ho;Lee, Eun-Jung;Chang, Sung-Pae
    • The Plant Pathology Journal
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    • 제19권3호
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    • pp.138-142
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    • 2003
  • Soil amendments with oriental herbal medicines such as fruit of Anethum graveolens, flower buds of Syzygium aromaticum, rhizome of Cnidium officinale, rhizome of Coptis chinensis, root bark of Paeonia suffructicosa, stem bark of phellodendron amurense, and stem bark of Cinnamomum cassia at the rate of 0.2% (weight by volume of soil) significantly reduced Meloidogyne incognita infection (root gall formation) of tomato seedlings compared with the control. The most effective treatments were root bark of p. suffructicosa and stem bark of C. cassia as they gave minimum numbers of galls on tomato roots (4.7% and 8.9%, respectively, relative to control) as compared to other treatments. Another study with root bark of p. suffructicosa and C. cassia at different application doses also showed consistent results in reducing gall number. The control efficacy decreased as the application doses were lower-ed, indicating their dose-dependent control activities. These treatments significantly enhanced aboveground plant growths (total masses).

IPMSM의 비선형 적응 백스텝핑 속도 제어 (Nonlinear and Adaptive Back-Stepping Speed Control of IPMSM)

  • 전용호;정승환;최익;조황
    • 전력전자학회논문지
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    • 제18권1호
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    • pp.18-25
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    • 2013
  • In this paper, a nonlinear controller based on adaptive back-stepping method is proposed for high performance operation of Interior Permanent Magnet Synchronous Motor (IPMSM). First, in order to improve the performance of speed tracking, a nonlinear back-stepping controller is designed. In addition, since it is difficult to achieve the high quality control performance without considering parameter variation, a parameter estimator is included to adapt to the variation of load torque in real time. Finally, for the efficiency of power consumption of the motor, controller is designed to operate motor with the minimum current for the required maximum torque. The proposed controller is tested through experiment with a 1-hp Interior Permanent Magnet Synchronous Motor (IPMSM) for the angular velocity reference tracking performance and load torque volatility estimation, and to test the Maximum Torque per Ampere (MTPA) operation. The result verifies the efficacy of the proposed controller.

공공연구기관의 기술라이센싱 모형 연구 : 방법론과 함의를 중심으로

  • 박종복;류태규;이정동;김태유
    • 기술혁신연구
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    • 제10권2호
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    • pp.19-44
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    • 2002
  • All over the world, the attention on the exploitation of public research, which is mainly implemented by technology transfer, has increased in recent years. Licensing, which is one of representative mechanisms for public-to-private technology transfer, is accompanied by the frequent conflicts in negotiating a license payment between public research institutes (PRIs) and private firms. In spite of the body of literature on technology transfer in a licensing context, it focuses on contracts between private firms. Even the existing literature, which addresses public-to-private technology transfer through licensing, to our knowledge, has not yet formalized an established licensing model. This paper develops a mathematical model of public-to-private licensing, not hitherto tried by academics. The model addresses important issues to be applied comprehensively in licensing practice, such as determining a royalty rate, balancing between an initial payment and a running royalty, designing an inventor's incentive system, and setting a minimum payment as a screening criterion. The paper also provides reasonable management implications to controversial issues in technology transfer from PRIs to private firms, partly employing the comparative analysis between current stylized licensing practice and the one suggested in the model. We hope that study contributes to providing the foundation on which the theory on public-to-private licensing would extend to an in-depth level.

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