• Title/Summary/Keyword: a brief review

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Overview of Earth Retaining Structures on Underground Excavations (굴착공법의 문제점과 개선방안)

  • 이종규
    • Proceedings of the Korean Geotechical Society Conference
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    • 2002.10a
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    • pp.55-64
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    • 2002
  • This paper presents a brief review of flexible retaining structure and the most significant methods developed to predict their behavior on underground excavations. Some observations are made about the future directions that the design of retaining systems may take , as there are still some problems where uncertainity exists, in soil-structure interaction and evaluation of strength parameters etc. And also reviewed papers presented in 2002 Fall National Conference of KGS.

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Nonlinear Analysis of Concrete Structure at Extremely Low Temperature (극저온 물성을 고러한 콘크리트 구조물의 비선형 해석)

  • 곽효경;송종영;이병국;이광모
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2000.10a
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    • pp.174-181
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    • 2000
  • A brief review of previous studies on the behaviour of concrete at extremely low temperature is presented in this paper. In addition, to describe temperature dependent behaviour of concrete, simple piecewise linear stress-strain relation is introduced. The proposed curve shows good agreement with experimental stress-strain curves at various temperature conditions. Moreover, numerical analyses for two PC beams are conducted to verify the influence of extremely low temperature to the structural behaviour.

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The World Wind Energy Conference in Berlin (1) (베를린 제1회 세계풍력회의를 다녀와서(1))

  • 기우봉
    • Journal of the Korean Professional Engineers Association
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    • v.35 no.4
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    • pp.52-55
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    • 2002
  • The development of environment-friendly Energy Resources (New Renewable Energy Resources) is one of the global topics these days, considering CO2 Reduction Agreement by Kyoto Protect and the limit of Conventional Energy Resources in near future. Among the New Renewable Energy, Wind Energy is the most feasible Renewable Energy in view of economical and technical aspect at this moment. Last 10 years the Wind Energy Development was really dramatical in Europe. especially in Germany, Denmark and Spain. In this circumstance World Wind Energy Conference was held in Berlin Germany, in order to review the present status and future development of the Wind Energy. This report is a brief report of the Conference .

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Cytologic Findings of Cerebrospinal Fluid (뇌척수액의 세포병리)

  • Jin, So-Young
    • The Korean Journal of Cytopathology
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    • v.19 no.2
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    • pp.86-98
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    • 2008
  • Cerebrospinal fluid (CSF) cytology is based on the cytopathologic findings of other body fluids. However, CSF's cytologic features are less familiar to physicians than are those of the other body fluid's cytology because of the small number of cases. The low overall diagnostic accuracy and the presence of false positivity still remain as problems. The incidence of lymphoreticular malignancies and metastatic carcinomas are rather higher than that of primary brain tumors. In this review, the characteristic cytologic findings of conventional CSF cytology are reviewed along with a brief note on the technical preparation and diagnostic pitfalls.

Dusty Plasmas-from space to semiconductor & display industries (더스티 플라즈마 연구 동향)

  • Chai, Kil-Byoung
    • Vacuum Magazine
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    • v.4 no.2
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    • pp.4-9
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    • 2017
  • Dusty plasmas consisting of electrons, ions, neutral gas molecules, and small solid-state 'dust' particles are ubiquitous. Examples include plasma processing, fusion plasmas, polar mesospheric clouds, Saturn's rings, comet tails, and protoplanetary disks. Since Voyager I and II discovered dusty plasmas in our solar system, dusty plasmas have been extensively studied from space & basic sciences to semiconductor & display industries. Here, a brief review on dusty plasma research is given and some remarkable results are introduced.

Abnormal Findings of the Ultrasonography for Elbow and Forearm (주관절과 전완부의 초음파 이상 소견)

  • Kim, Eunkuk
    • Clinical Pain
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    • v.20 no.1
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    • pp.1-6
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    • 2021
  • Ultrasonography (US) of the elbow is an increasingly utilized modality for a variety of diagnoses. In this brief review, US findings for the pathologic conditions of forearm and elbow are described. The most common pathologies discussed here include distal biceps tendon and triceps tendon lesions, medial and lateral epicondylopathies, ulnar collateral ligament tears, ulnar nerve subluxation, joint effusions, and intra-articular bodies.

A Brief Introduction to Marine Ecosystem Modeling (해양 생태모델링 고찰)

  • Kim, Hae-Cheol;Cho, Yang-Ki
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.18 no.1
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    • pp.21-31
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    • 2013
  • Ecosystem models are mathematical representations of underlying mechanistic relationships among ecological components and processes. Ecosystem modeling is a useful tool to visualize inherent complexities of ecological relationships among components and the characteristic variability in ecological systems, and to quantitatively predict effects of modification of systems due to human activities and/or climate change. A number of interdisciplinary programs in recent 20 to 30 years motivated oceanographic communities to explore and employ systematic and holistic approaches, and as an outcome of these efforts, synthesis and modeling became a popular and important way of integrating lessons learned from many on-going projects. This is a brief review that includes: background information of ecosystem dynamics model; what needs to be considered in building a model framework; biologically-physically coupled processes; end-to-end modeling efforts; and parameterization and related issues.

A COMPARATIVE OVERVIEW OF THERMAL HYDRAULIC CHARACTERISTICS OF INTEGRATED PRIMARY SYSTEM NUCLEAR REACTORS

  • NINOKATA HISASHI
    • Nuclear Engineering and Technology
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    • v.38 no.1
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    • pp.33-44
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    • 2006
  • This paper presents a review of small-to-medium-sized, pressurized-water-cooled nuclear power reactors whose major primary coolant systems are integrated into a reactor pressure vessel, the concepts categorized as Integrated Primary System Nuclear Reactors (IPSRs). Typical examples of these proposals of interest in this review are CAREM, SMART, IRIS and IMR, all of which are being aimed at the near term deployment. Emphasis is placed on thermal hydraulic aspects. A brief characterization of the IPSR concepts is made and comparisons of plant key parameters are shown. Discussions will follow for the core cooling under rated power conditions and natural circulation heat removal on the basis of the design data available in the public domain.

A Review of Three Different Studies on Hidden Markov Models for Epigenetic Problems: A Computational Perspective

  • Lee, Kyung-Eun;Park, Hyun-Seok
    • Genomics & Informatics
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    • v.12 no.4
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    • pp.145-150
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    • 2014
  • Recent technical advances, such as chromatin immunoprecipitation combined with DNA microarrays (ChIp-chip) and chromatin immunoprecipitation-sequencing (ChIP-seq), have generated large quantities of high-throughput data. Considering that epigenomic datasets are arranged over chromosomes, their analysis must account for spatial or temporal characteristics. In that sense, simple clustering or classification methodologies are inadequate for the analysis of multi-track ChIP-chip or ChIP-seq data. Approaches that are based on hidden Markov models (HMMs) can integrate dependencies between directly adjacent measurements in the genome. Here, we review three HMM-based studies that have contributed to epigenetic research, from a computational perspective. We also give a brief tutorial on HMM modelling-targeted at bioinformaticians who are new to the field.

Carbon Ion Therapy: A Review of an Advanced Technology

  • Kim, Jung-in;Park, Jong Min;Wu, Hong-Gyun
    • Progress in Medical Physics
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    • v.31 no.3
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    • pp.71-80
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    • 2020
  • This paper provides a brief review of the advanced technologies for carbon ion radiotherapy (CIRT), with a focus on current developments. Compared to photon beam therapy, treatment using heavy ions, especially a carbon beam, has potential advantages due to its physical and biological properties. Carbon ion beams with high linear energy transfer demonstrate high relative biological effectiveness in cell killing, particularly at the Bragg peak. With these unique properties, CIRT allows for accurate targeting and dose escalation for tumors with better sparing of adjacent normal tissues. Recently, the available CIRT technologies included fast pencil beam scanning, superconducting rotating gantry, respiratory motion management, and accurate beam modeling for the treatment planning system. These techniques provide precise treatment, operational efficiency, and patient comfort. Currently, there are 12 CIRT facilities worldwide; with technological improvements, they continue to grow in number. Ongoing technological developments include the use of multiple ion beams, effective beam delivery, accurate biological modeling, and downsizing the facility.