• 제목/요약/키워드: direction of revision

검색결과 179건 처리시간 0.023초

Accuracy Analysis of Iliac Screw Using Freehand Technique in Spinal Surgery : Relation between Screw Breach and Revision Surgery

  • Lee, Subum;Jung, Sang Ku;Keshen, Sam G.;Lewis, Stephen J.;Park, Jin Hoon
    • Journal of Korean Neurosurgical Society
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    • 제63권2호
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    • pp.210-217
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    • 2020
  • Objective : To analyze the accuracy of iliac screws using freehand technique performed by the same surgeon. We also analyzed how the breach of iliac screws was related to the clinical symptoms resulting in revision surgery. Methods : From January 2009 to November 2015, 100 patients (193 iliac screws) were analyzed using postoperative computed tomography scans. The breaches were classified based on the superior, inferior, lateral, and medial iliac wall violation by the screw. According to the length of screw extrusion, the classification grades were as follows : grade 1, screw extrusion <1 cm; grade II, 1 cm ≤ screw extrusion <2 cm; grade III, 2 cm ≤ screw extrusion <3 cm; and grade IV, 3 cm ≤ screw extrusion. We also reviewed the revision surgery associated with iliac screw misplacement. Results : Of the 193 inserted screws, 169 were correctly located and 24 were misplaced screws. There were eight grade I, six grade II, six grade III, and four grade IV screw breaches, and 11, 8, 2, and 3 screws violated the medial, lateral, superior, and inferior walls, respectively. Four revision surgeries were performed for the grade III or IV iliac screw breaches in the lateral or inferior direction with respect to its related symptoms. Conclusion : In iliac screw placement, 12.4% breaches developed. Although most breaches were not problematic, symptomatic violations (2.1%) could result in revision surgery. Notably, the surgeon should keep in mind that lateral or inferior wall breaches longer than 2 cm can be risky and should be avoided.

한국목록규칙의 개정 방향에 대한 연구 (A Study on the Direction for the Revision of Korean Cataloguing Rules)

  • 김정현
    • 한국도서관정보학회지
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    • 제44권4호
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    • pp.123-143
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    • 2013
  • 이 연구는 국내외 목록규칙의 흐름과 함께 KCR4의 특성과 문제점을 분석하고, 아울러 KCR4의 개정과 관련하여 목록전문가의 설문내용 등을 종합적으로 분석하여 한국목록규칙의 개정방향을 제안 하려는 것이다. 연구결과를 요약하면 아래와 같다. 첫째, 파리원칙 이후 최근의 국제적인 목록규칙 흐름은 국제목록원칙규범과 FRBR을 기반으로 하고 있는 RDA로 집약되어 있다. 둘째, 2003년 KCR4가 제정된 이래 KCR4는 제정 당시부터 전거제어 등에 관한 규정이 미비한 미완성의 규칙이었으며, 표목의 선정과 형식을 별도로 규정하지 않음으로 인해 도서관 현장에서는 혼란과 어려움이 있어 어떠한 형태로든 KCR4가 개정되어야 한다. 셋째, KCR4의 개정에 대한 목록 전문가의 의견을 조사한 결과, 대부분이 RDA와 같은 최근의 국제목록규칙의 흐름을 수용하고, 또한 접근점에 대한 내용추가, 전거제어를 위한 세부규칙 마련, RDA의 대폭적인 수용과 함께 자료유형별이 아닌 기술요소별로 규칙을 개정해야 한다고 응답하여 이러한 점이 개정에 반영되어야 한다.

종교 저작에 대한 한국목록규칙의 개정 방향과 범위 탐색 (Exploring the Revision Direction and Scope of the Korean Cataloging Rules for Religious Works)

  • 노지현
    • 한국도서관정보학회지
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    • 제52권4호
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    • pp.153-177
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    • 2021
  • 한국목록규칙(KCR)에 대한 전면적인 개정이 진행되고 있다. 이 연구에서 집중적으로 다룬 부분은 종교 저작에 관한 규칙이다. 종교 저작은 음악작품이나 법률 저작과 함께 IFLA LRM 개념모형을 지향하는 새로운 목록규칙에서도 특별하게 다루어지고 있다. 그러나 KCR2 이후에 접근점에 대한 논의가 없었던 국내의 경우, 종교 저작에 관한 기술과 접근점 규정을 별도로 마련할 필요가 있는지, 한다면 어떠한 내용과 범위를 다루어야 하는지에 대해 검토할 필요가 있다. 이에 본 연구에서는 문헌연구와 사례조사를 토대로 하여, (1) 최근 개정을 완료한 목록규칙인 RDA와 NCR에 수록된 종교 저작에 관한 내용을 분석하고, (2) 실제 사례를 통해 종교 저작에 적용된 접근점과 그 기능을 검토한 다음, (3) 종교 저작에 대한 KCR4의 개정 방향과 범위를 제안하였다. 연구결과, 종교 저작의 경우 동일 저작이 상이한 버전이나 표제를 가지는 경우가 많아 이를 집중하기 위한 특별한 수단이 강구될 필요가 있으며, 이를 위해 종교 저작의 유형별로 우선표제의 선정과 전거형 접근점의 작성 규칙을 마련할 필요가 있음을 제안하였다. 이와 더불어, KCR 개정과정에서 후속 논의가 필요한 사항을 정리하여 제안하였다.

한국의 수학교육 평가 유형에 관한 연구동향

  • 김영옥;정성희
    • East Asian mathematical journal
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    • 제28권4호
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    • pp.487-504
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    • 2012
  • This study was to analyze the research trend related to mathematics education evaluation in the analysis of the articles on , . The study explores the future direction of mathematics education assessment research by investigating whether such evaluation was suitable for the expectation about the assessment required in the current mathematics curriculum. This study was to classify the evaluation-related researches based on Korea educational curriculum revision from 1991-2010 to examine the research trend on the mathematics education evaluation in each season in Korea, analyze the articles by 'monitoring of student's progress', 'judgement on instruction', 'giving the value on mathematics achievement of students', 'value judgement of the program' that were the purpose of evaluation presented in 1995 NCTM(National Council of Teachers of Mathematics). As a result, looking at the research trend classified by the time of the educational curriculum revision, the 7th educational curriculum had the most number of the papers announced from 1997-2006. Despite 2007 educational curriculum revision was the short period from announced 2007-2008 before the next educational curriculum was placed, 11 papers(34.4%) were published. According to the category by the purpose of the assessment prescribed in NCTM, it showed that researches of 'monitoring of student's progress(46.9%)' were the most, those of 'value judgement of the program' and 'giving the value on mathematics achievement of students had a similar percentage.

제7차 지구과학I, II 교육과정 개선 방안 연구 (Research on Ways to Improve the 7th National Earth Science I, II Curriculum)

  • 이양락;김동영;곽영순
    • 한국과학교육학회지
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    • 제27권4호
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    • pp.328-336
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    • 2007
  • In this research we conducted a survey on the actual status of the 7th National Earth Science I & II curriculum to explore ways of revising the next Earth Science curriculum for better education. Of the 180 Earth Science teachers, 60% responded to the survey. The domains of the survey consist of (1) the necessity of Earth Science I & II curriculum revision, (2) educational goals, (3) content coverage, (4) level of difficulty and students' interest for Earth Science content, and (5) ways to overcome the crisis of Earth Science education. Majority of the respondents demanded the revision of Earth Science I, II curriculum because of overlapping and repetition of contents among 10th grade science and Earth Science I and overcrowded Earth Science II contents. Based on the survey results, recommendations on how to improve Earth Science I, II curriculum and how to adjust Earth Science contents are suggested. In addition to curriculum improvement, systematic supports are required for Earth science not to be excluded and turned down by the student and the scholastic aptitude test for university admission.

기계공학수학의 현황 분석을 통한 개편안 제시 (Suggestions for Revision of Mathematics Curriculum by Analysis of Current Mechanical Engineering Mathematics)

  • 강주석;박찬일
    • 공학교육연구
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    • 제20권2호
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    • pp.50-56
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    • 2017
  • Because all areas of mechanical engineering involves the use of mathematics, mechanical engineers need mathematical understanding and skill enhancement. To achieve the effective mathematics education for mechanical undergraduate students, it should reorganize the important subtopics of mathematics. In this paper, we explore the direction of the development of mathematics education for mechanical engineers by analyzing the teaching hours of each topics in the mathematics and by comparing the results with significance analysis of expert survey. To do so, syllabuses of mathematics courses of the selected mechanical engineering departments were analyzed and the survey responses of professionals in the Korean Society of Mechanical Engineers were also investigated. Finally, the revision of mathematics curriculum in the mechanical engineering was proposed.

이동로봇을 위한 RFID tag 기반의 위치 오차 보정 기법 (A Position Error Revision Techniques of RFID tag Base for Mobile Robot)

  • 최종훈;정대섭;정기호;심현민;권오상;이응혁
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년 학술대회 논문집 정보 및 제어부문
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    • pp.560-562
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    • 2006
  • In this paper, Correct problem in dead reckoning system and proposed about position error revision techniques of mobile robot to use RFID tag for position awareness. With the dead reckoning system, as the accumulation of error are unavoidable because of accumulation of informations as the time passage, so it is impossible to get correct information about posture, including torrent direction, movement distance, etc. As one of compensation method, the suggested method is that after selecting special area (corridor), compensate absolute location information by arranging two line of RFID tag along two side of corridor. Through this suggested method, it could be used when robot wants to move in limited areas.

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건축용 실란트 오염물질 방출량 기준에 대한 고찰 (Insights Of Air Pollutant Emission From Construction Sealant)

  • 서연원;정진영;배기선
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2014년도 춘계 학술논문 발표대회
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    • pp.226-227
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    • 2014
  • This study is intended for the review of the standards related with the released contaminants from building materials used in the building room. Because currently being used industry standard and test method for the emissions of air pollutant are ambiguous so the new enactment and revision of the test methods and standards need to be addressed to match the actual situation in the construction industry. Based on actual evaluation for seveal sealants used in the job site, this study will present a direction for the revision and new enactment of standards and test method appropriately.

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건축음향관련 KS규격의 개정 및 제정에 관한 고찰 (A Consideration on the Revision and Establishment of KS - For Building Acoustics -)

  • 송민정;이주엽;정진연;장길수;김선우
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2000년도 춘계학술대회논문집
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    • pp.197-201
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    • 2000
  • For building acoustics, the revision and establishment of ISO JIS were carried out actively in the direction of international harmonization recently. In this consideration, the trends of the ISO and JIS were reviewed and the establishment process of KS was introduced. As a result of this consideration, it is thought to be that 'International Harmonization' should be a base for KS and the speciality of domestic characteristics should be attached to annex.

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