• 제목/요약/키워드: Journal Analysis

검색결과 258,634건 처리시간 0.128초

기술분석의 고도화 (The Advance of Technology Analysis)

  • 설성수
    • 기술혁신학회지
    • /
    • 제5권3호
    • /
    • pp.260-276
    • /
    • 2002
  • Technology Analysis is advanced by the development of the analysis of technological information such as technological bibliometric analysis and patent analysis. Also, the advance of technology analysis has led the development of the family of techno-market analysis such as cost-benefit analysis, analysis for new item development, and the valuation of technology and technology business. Technology analysis mostly based on technological information analysis is confronted by new challenges from the development of information science and technology such as text mining.

  • PDF

Bi-directional fault analysis of evaporator inspection system

  • Kang, Dae-Ki;Kang, Jeong-Jin
    • International journal of advanced smart convergence
    • /
    • 제1권1호
    • /
    • pp.57-60
    • /
    • 2012
  • In this paper, we have performed a safety analysis on an automotive evaporator inspection system. We performed the bi-directional analysis on the manufacturing line. Software Fault Tree Analysis (SFTA) as backward analysis and Software Failure Modes, Effects, & Criticality Analysis (SFMECA) as forward analysis are performed alternately to detect potential cause-to-effect relations. The analysis results indicate the possibility of searching and summarizing fault patterns for future reusability.

주택 사업 분석 시스템 구축 : 서울지역 아파트 가격 데이터를 중심으로 (Implementing an Analysis System for Housing Business Based on Seoul Apartment Price Data)

  • 김태훈;이희석;김재윤;전진오;이은식
    • 정보기술과데이타베이스저널
    • /
    • 제6권2호
    • /
    • pp.115-130
    • /
    • 1999
  • The price structure of housing market varies depending upon market price policy rather than low or high price policy because of IMF. The object of this study is to develop an analysis system for analyzing housing market and its demand. The analysis system consists of four major categories: macro index analysis, market decision analysis, housing market analysis, and consumer analysis. We model each category by using a variety of techniques such as generalized linear model, categorical analysis, bubble analysis, drill-down analysis, price sensitivity meter analysis, optimum price index analysis, profit index measurement analysis, correspondence analysis, conjoint analysis, and multidimensional scaling analysis. Seoul apartment data is analyzed to demonstrate the practical usefulness of the system.

  • PDF

원전 화재위험도분석에서 전기회로분석 검증방안에 관한 연구 (A Study on the Verification Scheme for Electrical Circuit Analysis of Fire Hazard Analysis in Nuclear Power Plant)

  • 임현태;오승준;김위경
    • 한국안전학회지
    • /
    • 제30권3호
    • /
    • pp.114-122
    • /
    • 2015
  • In a fire hazard analysis (FHA) for nuclear power plant, various electrical circuit analyses are performed in the parts of fire loading analysis, fire modeling analysis, separation criteria analysis, associated circuit analysis, and multiple spurious operation analysis. Thus, electrical circuit analyses are very important areas so that reliability of the analysis results should be assured. This study is to establish essential electrical elements for each analysis for verification of the reliability of the electrical circuit analyses in the fire hazard analysis for nuclear power plants. Applying the results derived by the study to domestic nuclear power plants, it is expected to determine the adequacy of the fire hazard analysis report and contribute to the reliability of the fire hazard analysis of those plants.

퇴화최적해에서 일반감도분석 (Generalized Sensitivity Analysis at a Degenerate Optimal Solution)

  • 박찬규;김우제;박순달
    • 한국경영과학회지
    • /
    • 제25권4호
    • /
    • pp.1-14
    • /
    • 2000
  • The methods of sensitivity analysis for linear programming can be classified in two types: sensitivity analysis using an optimal solution, and sensitivity analysis using an approximate optimal solution. As the methods of sensitivity analysis using an optimal solution, there are three sensitivity analysis methods: sensitivity analysis using an optimal basis, positive sensitivity analysis, and optimal partition sensitivity analysis. Since they may provide different characteristic regions under degeneracy, it is not easy to understand and apply the results of the three methods. In this paper, we propose a generalized sensitivity analysis that can integrate the three existing methods of sensitivity analysis. When a right-hand side or a cost coefficient is perturbed, the generalized sensitivity analysis gives different characteristic regions according to the controlling index set that denotes the set of variables allowed to have positive values in optimal solutions to the perturbed problem. We show that the three existing sensitivity analysis methods are special cases of the generalized sensitivity analysis, and present some properties of the generalized sensitivity analysis.

  • PDF

A Study of Choice for Analysis Method on Repeated Measures Clinical Data

  • Song, Jung
    • 대한임상검사과학회지
    • /
    • 제45권2호
    • /
    • pp.60-65
    • /
    • 2013
  • Data from repeated measurements are accomplished through repeatedly processing the same subject under different conditions and different points of view. The power of testing enhances the choice of pertinent analysis methods that agrees with the characteristics of data concerned and the situation involved. Along with the clinical example, this paper compares the analysis of the variance on ex-post tests, gain score analysis, analysis by mixed design and analysis of covariance employable for repeating measure. Comparing the analysis of variance on ex post test, and gain score analysis on correlations, leads to the fact that the latter enhances the power of the test and diminishes the variance of error terms. The concluded probability, identified that the gain score analysis and the mixed design on interaction between "between subjects factor" and "within subjects factor", are identical. The analysis of covariance, demonstrated better power of the test and smaller error terms than the gain score analysis. Research on four analysis method found that the analysis of covariance is the most appropriate in clinical data than two repeated test with high correlation and ex ante affects ex post.

  • PDF

원자로용 수중탐상기의 구조해석 (Structural Analysis of RIROB(Reactor Inspection Robot))

  • 권영주;최석호;김재희
    • 한국CDE학회논문집
    • /
    • 제8권1호
    • /
    • pp.19-26
    • /
    • 2003
  • This paper presents the structural analysis of RIROB(Reactor Inspection Robot). Actually, several analyses such as kinetodynamics analysis, fluid mechanics analysis and structural mechanics analysis etc. should be carried out in the design of RIROB. These analyses are executed through the use of com-puter aided engineering(CAE) systems. The kinetodynamics analysis is carried out using a simple fluid dynamic analysis model for the water flow over the sensor support surface instead of difficult fluid mechanics analysis. Simultaneously the structural mechanics analysis is carried out to obtain the mini-mum thickness of the RIROB housing. The minimum thickness of the RIROB housing is evaluated to be 1.0 ㎝ for the safe design of RIROB. The kinetodynamics analysis of RIROB is performed using ADAMS and the static structural mechanics analysis of RIROB is performed using NISA.

TF-IDF와 네트워크분석을 이용한 특허 데이터 분석과 경쟁우위 전략수립에 관한 연구 (A Study on Patent Data Analysis and Competitive Advantage Strategy using TF-IDF and Network Analysis)

  • 윤석용;한경석
    • 디지털콘텐츠학회 논문지
    • /
    • 제19권3호
    • /
    • pp.529-535
    • /
    • 2018
  • 데이터는 폭발적으로 증가하고 있으나 아직도 많은 기업이 데이터 분석을 현황 설명(descriptive analysis)이나 진단 분석(diagnostic analysis)에만 활용하고 예측분석(predictive analysis)이나 기업의 기술전략 분석 등에는 적절하게 활용하고 있지 못하다. 본 연구는 오픈 되어 있는 특허의 IPC 코드, 발명자, 출원일 등의 정형데이터와 청구항 등의 비정형 데이터를 네트워크분석, TF-IDF 등의 빅데이터 분석기법을 활용하여 경쟁기업의 확보 기술과 핵심 기술의 분포, 해외 진출 전략을 파악하기 위한 분석 프로세스를 제시하고 이를 데이터 분석을 통하여 증명하고자 한다.

한의학 연구에 활용된 통계분석 방법에 대한 고찰 (A Review of Statistical Analysis Methods Applied on Traditional Korean Medicine Research)

  • 장선일;윤용갑;최경호
    • 대한한의학방제학회지
    • /
    • 제17권1호
    • /
    • pp.75-83
    • /
    • 2009
  • Objective : The purpose of this study is to indicate of problems in statistical analysis method of "The Korean Journal of oriental Medical Prescription" and we will be proposed the useful application of the statistical analysis method. Methods : In this paper, we were analysed statistical analysis methodology from published journal articles "The Korean Journal of Oriental Medical Prescription" December, year 2000 to December, year 2008. We were investigated of problems in application of structured analysis methods those journal articles that including statistical analysis techniques and analysis methods. Results : 1. A random allocation of the experimental group and control groups are important factors in the planning process of statistical analysis. However, there are less explanation those journal articles. 2. There are no consideration in specimen size that there will be considerate by the level of significance and statistical test. 3. Many article authors were confused between parametric methods and non-parametric methods that they were applied parametric statistical analysis methods although inapplicable sample size. 4. There were applied the parametric methods consists of t-test instead non-parametric methods in the comparison of average intergroup relations. 5. There were less understanding posterior analysis and were confused with t-test. Conclusion : Our goal was to outline the key methods with a brief discussion of problems(statistical analysis methods), avenues for solutions. we recommend authors to use an appropriate statistical analysis methods for obtaining a more cautions results.

  • PDF

기계식 인공심장판막의 경량화 구조설계를 위한 혈액유동과 상호작용하는 판막거동의 구조역학적 특성연구 (Structural Analysis on the Leaflet Motion Interacted with Blood Flow for Thickness Minimization Design of a Bileaflet Mechanical Heart Valve)

  • 권영주;방혜철;김창녕
    • 한국CDE학회논문집
    • /
    • 제6권1호
    • /
    • pp.59-68
    • /
    • 2001
  • This paper investigates the structural analysis and design of mechanical heart valve through the numerical analysis methodology. In a numerical analysis methodology application to the thickness minimization structural design of mechanical heart valve, fluid analysis is performed for the blood flow through a bileaflet mechanical heart valve. Simultaneously the kinetodynamic analysis is carried out to obtain the appropriate structural condition for the structural analysis. Thereafter the structural static analysis is also carried out to confirm the thickness minimization structural condition(minimum thickness shape of leaflet).

  • PDF