• 제목/요약/키워드: stability review

검색결과 847건 처리시간 0.027초

Monetary Policy Independence during Reversal Phases of Domestic-Foreign Interest Rate Differentials

  • Kyunghun Kim
    • East Asian Economic Review
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    • 제28권2호
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    • pp.221-244
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    • 2024
  • This study examines how the independence of monetary policy changes in situations where the interest rate differential between domestic and foreign rates inverts, utilizing the trilemma indices. For analysis, this paper uses the trilemma indices developed by Kim et al. (2017) to analyze the relationship between the monetary policy independence index and the other two trilemma indices, namely the capital account openness index and the exchange rate stability index, across 45 countries from 2002 to 2018. The analysis reveals that the trilemma's validity is contingent. In particular, no statistically significant negative correlation was found between the monetary policy independence index and exchange rate stability index during periods of interest rate differential inversion. A positive correlation emerges between exchange rate stability and the independence of monetary policy, particularly when the inverted interest rate differential exceeds a certain threshold. This situation, where the exchange rate remains stable despite low domestic interest rates, implies that the central bank is effectively managing monetary policy to appropriately respond to economic conditions, which is reflected in the monetary policy independence index.

침투해석시 토층심도 및 불투수층 유무에 따른 지반의 포화특성 분석 (Analysis of Soil Saturation Characteristics According to the Presence or Absence of Soil Layer Depth and Impervious)

  • 이승우;장범수;김용수;이종건;이주용
    • 한국구조물진단유지관리공학회 논문집
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    • 제17권1호
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    • pp.21-26
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    • 2013
  • 최근 많은 연구를 통해 비탈면의 우기시 안정성 검토 방법이 기존의 해석 방법에 비해 강우를 고려한 침투해석이 보다 경제적이고, 현실적이라는 주장이 제기되고 있다. 최근 개정된 건설공사 비탈면 설계기준에서도 보다 현실적인 안정성 검토를 위해우기 시 강우를 고려하여 침투해석을 실시할 수도 있게 개정되었다. 그러나 침투해석 과정에는 지반의 불투수특성과 강우강도등 고려되는 인자들로 인해 그 과정이 복잡하다는 애로사항이 있다. 본 연구에서는 침투해석을 이용한 보다 효과적인 안정성 검토 방법을 제시하기 위해 흙의 종류와 지속강우 특성에 따른 침투 조건을 변화시켜 일반적인 침투양상을 파악하였다. 그 결과를 이용하여 지표면까지 포화된다는 가정하에 해석을 실시할 수 있는 조건을 제시할 수 있었다.

신경 회로망을 이용한 부품 조립 공정의 최적화 알고리즘 (Optimal algorithm of part-matching process using neural network)

  • 오제휘;차영엽
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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    • pp.143-146
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    • 1996
  • In this paper, we propose a hopfield model for solving the part-matching which is the number of parts and positions are changed. The goal of this paper is to minimize part-connection in pairs and net total path of part-connection. Therefore, this kind of problem is referred to as a combinatorial optimization problem. First of all, we review the theoretical basis for hopfield model to optimization and present two method of part-matching; Traveling Salesman Problem (TSP) and Weighted Matching Problem (WMP). Finally, we show demonstration through computer simulation and analyzes the stability and feasibility of the generated solutions for the proposed connection methods.

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단층의 지반공학적 특성 (Geotechnical Characteristics of Fault)

  • 구호본
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2007년 가을학술발표회
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    • pp.182-185
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    • 2007
  • It is important to identify the fault for solving the problem about slope failure and landslides. This brief report is to review occurrence and characteristics of the fault. Also, this is to introduce the geotechnical characteristics and properties of the fault and suggests how the fault affects to the cut slope stability and propose countermeasures with respect to the fault.

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갑판적 목재운반선의 비손상 복원성에 관한(문제점) 검토 (Review of the Intact Stability(Problems) for Ships Carrying Timber Deck Cargoes)

  • 장인환;김찬종
    • 대한조선학회지
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    • 제26권3호
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    • pp.71-78
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    • 1989
  • A series of total loss of log carriers of G/T 4000 class which are engaged in EAST-SOUTH ASIAN route have been reported during the last decade. The casualties has been investigated in depth to draw the efficient means of safety. The results of this investigation, which are described in this paper, have been submitted to INTERNATIONAL MARITIME ORGANIZATION(IMO) by KOREAN GOVERNMENT in cooperation with the KOREAN REGISTER OF SHIPPING to request the revision of stability criteria of ship carrying timber deck cargoes.

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자세의 유지성 및 안정성에 관한 해석 (Identification of postural steadiness and stability: state-of-the-art)

  • 정병용;박경수
    • 대한인간공학회지
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    • 제15권1호
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    • pp.53-67
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    • 1996
  • Since Romberg's test in 1953, the analysis of postural sway during upright stance has been widely used as a tool for evaluating balance and disorders of the postural control system. This review describes the methods that have been used to evaluste the static and dynamic performance of the postural control system. Various identification methods of postural control system based on standing balance are discussed and measures of postural sway are described. The application areas of standign balance research, with an emphasis on postural control evaluations, are also briefly described. This review can be used to gain an understanding of the dynamics of human standing balance.

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굴절교정수술에 대한 follow-up Study Review (A Review on the Follow-up Study of the Refractive Surgeries)

  • 정세연;김윤범
    • 한방안이비인후피부과학회지
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    • 제17권2호
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    • pp.170-176
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    • 2004
  • Refractive surgeries for myopia are rapidly spreading in our daily lives. In this study Korean and foreign follow-up studies, mainly focused on long-term outcomes of LASIK and LASEK, were analyzed. Examining the evidence of the efficacy, accuracy, stability, complications and patient satisfaction will help refine our approach to refractive surgeries.

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Modernization of Review Process for Generic Drug Products in Korea

  • Chung, Suk-Jae
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-1
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    • pp.42-42
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    • 2003
  • Recently, Korean Food and Drug Administration (KFDA) has been attempting to modernize the review processes for generic drug products. Obviously, the modernization effort will lead to harmonize the guidelines in the process to the internationally acceptable level. In general, the Korean version of abbreviated new drug application (ANDA) consisted of similarly to those in developed countries (viz, specifications for bulk drug/preparation, bioequivalence, and stability); However, there exists a significant gap in the sophistication of the guidelines between the Korean version and those in the other countries. (omitted)

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장경간 보도교의 내풍안정성에 관한 연구 (A Study on the Aerodynamic Stability of Long Span Pedestrian Bridges)

  • 이승호;정회갑;권순덕
    • 대한토목학회논문집
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    • 제39권2호
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    • pp.287-296
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    • 2019
  • 최근 지자체들이 경쟁하듯이 건설하고 있는 장경간 케이블 보도교(일명 출렁다리)는 공원 시설로 인식되어 제대로 된 검토와 설계 없이 진행되는 경우가 있다. 케이블 보도교는 기존 도로 현수교보다 훨씬 유연한 특성으로 인하여 내풍안정성 확보는 반드시 필요하며, 오히려 더 기존의 도로교보다 다양한 관점에서 상세하게 검토되어야 한다. 이에 본 연구에서는 케이블 보도교의 내풍 특성을 파악하고, 고유진동수를 추정할 수 있는 추정식을 제시하였다. 또한 경간장에 따른 플러터 풍속 추정에 대한 추세선을 제시하여 평판 거더 보도교의 내풍안정성 확보의 어려움과 그 한계를 제시하였다. 그리고 풍동실험을 통해 바닥 데크 그레이팅 적용 비율 변화를 통해 내풍안정성을 만족하는 단면을 제시하였다. 본 연구에서 제시한 방법은 향후 세장 케이블 보도교 계획시 기초 자료로 활용할 수 있을 것으로 판단된다.

Review of earthquake-induced landslide modeling and scenario-based application

  • Lee, Giha;An, Hyunuk;Yeon, Minho;Seo, Jun Pyo;Lee, Chang Woo
    • 농업과학연구
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    • 제47권4호
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    • pp.963-978
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    • 2020
  • Earthquakes can induce a large number of landslides and cause very serious property damage and human casualties. There are two issues in study on earthquake-induced landslides: (1) slope stability analysis under seismic loading and (2) debris flow run-out analysis. This study aims to review technical studies related to the development and application of earthquake-induced landslide models (seismic slope stability analysis). Moreover, a pilot application of a physics-based slope stability model to Mt. Umyeon, in Seoul, with several earthquake scenarios was conducted to test regional scale seismic landslide mapping. The earthquake-induced landslide simulation model can be categorized into 1) Pseudo-static model, 2) Newmark's dynamic displacement model and 3) stress-strain model. The Pseudo-static model is preferred for producing seismic landslide hazard maps because it is impossible to verify the dynamic model-based simulation results due to lack of earthquake-induced landslide inventory in Korea. Earthquake scenario-based simulation results show that given dry conditions, unstable slopes begin to occur in parts of upper areas due to the 50-year earthquake magnitude; most of the study area becomes unstable when the earthquake frequency is 200 years. On the other hand, when the soil is in a wet state due to heavy rainfall, many areas are unstable even if no earthquake occurs, and when rainfall and 50-year earthquakes occur simultaneously, most areas appear unstable, as in simulation results based on 100-year earthquakes in dry condition.