• 제목/요약/키워드: Screening Methodology

검색결과 149건 처리시간 0.021초

전자부품 검사에서 대용특성을 이용한 사례연구 (A Case Study on Electronic Part Inspection Based on Screening Variables)

  • 이종설;윤원영
    • 품질경영학회지
    • /
    • 제29권3호
    • /
    • pp.124-137
    • /
    • 2001
  • In general, it is very efficient and effective to use screening variables that are correlated with the performance variable in case that measuring the performance variable is impossible (destructive) or expensive. The general methodology for searching surrogate variables is regression analysis. This paper considers the inspection problem in CRT (Cathode Ray Tube) production line, in which the performance variable (dependent variable) is binary type and screening variables are continuous. The general regression with dummy variable, discriminant analysis and binary logistic regression are considered. The cost model is also formulated to determine economically inspection procedure with screening variables.

  • PDF

Research and Development Methodology for Practical Use of Accident Tolerant Fuel in Light Water Reactors

  • Kurata, Masaki
    • Nuclear Engineering and Technology
    • /
    • 제48권1호
    • /
    • pp.26-32
    • /
    • 2016
  • Research and development (R&D) methodology for the practical use of accident tolerant fuel (ATF) in commercial light water reactors is discussed in the present review. The identification and quantification of the R&D-metrics and the attribute of candidate ATF-concepts, recognition of the gap between the present R&D status and the targeted practical use, prioritization of the R&D, and technology screening schemes are important for achieving a common understanding on technology screening process among stakeholders in the near term and in developing an efficient R&D track toward practical use. Technology readiness levels and attribute guides are considered to be proper indices for these evaluations. In the midterm, the selected ATF-concepts will be developed toward the technology readiness level-5, at which stage the performance of the prototype fuel rods and the practicality of industrial scale fuel manufacturing will be verified and validated. Regarding the screened-out concepts, which are recognized to have attractive potentials, the fundamental R&D should be continued in the midterm to find ways of addressing showstoppers.

기상조건에 따른 유해독성염소가스의 가상흐름누출에 관한 예측 및 제어론 (The Methodology for Prediction and Control of Hazardous Chlorine Gas Flow Releases as Meteorological Data)

  • 김종식;박종규
    • 공업화학
    • /
    • 제10권8호
    • /
    • pp.1155-1160
    • /
    • 1999
  • 본 스크리닝 방법론에서는 저장탱크 및 압력방출장치로부터 누출되는 기상흐름의 누출에 대한 대기분산 모델링 절차가 고려되었다. 본 연구는 화학장치 설비 중 염소 저장탱크의 누출유형에 따른 누출물의 물성자료들을 포함하는 누출원모델, 분산모델, 기상 및 지형자료들을 TSCREEN 모델에 입력시켜 염소가스의 풍하거리에 따른 1시간 평균 최대 지표면 농도를 산출함으로써 유해독성가스의 누출 예측 및 제어를 위한 스크리닝 방법론을 개발하기 위한 것이다. 연구결과로부터, 공기보다 무거운 가스의 분산유형은 누출물의 상태, 누출 조건, 누출물의 물리 화학적특성, 누출유형(연속 및 순간누출)에 영향을 받고 있으며, 특히 누출물의 초기(감압) 밀도 및 누출속도 뿐만 아니라 풍속에 커다란 영향을 받고 있음을 알 수 있다. 특히, 기상조건(대기안정도 및 풍속)에 따른 유해물질의 대기중 누출을 살펴보았다. 본 스크리닝 방법론은 보다 다종다양한 시나리오들을 선정하여 보편적으로 적용할 수 있는 Sliding Scale 방법론을 개발함으로써 정교한 해석 모델의 적용시 예비 가이드라인으로 활용될 수 있으리라 사료된다.

  • PDF

지역사회 여성 주민을 대상으로 한 대상중심형 위암 조기검진 교육 프로그램의 개발 및 효과평가 (Effectiveness of a Community-based Program Using Tailored Stage-matched Messages to Promote Screening for Stomach Cancer)

  • 김영복
    • 보건교육건강증진학회지
    • /
    • 제22권2호
    • /
    • pp.97-110
    • /
    • 2005
  • Objectives: Recent studies have shown that tailored messages for cancer screening to the beliefs and stage of cancer screening behavior of individual women increases the take-up probability. Many studies on cancer screening have used the Transtheoretical Model (TTM) to identify variables associated with cancer screening behavior. This study was carried out to identify the cognitive-behavioral factors associated with stomach cancer screening among women aged 40 years and over, and to develop and evaluate a tailored educational program for stomach cancer screening by stages of change. Methods: Building on the TTM constructs, we conducted a quasi-experimental study(N=283) to test the effectiveness of a tailored educational program for endoscopic stomach cancer screening. We carried out pre and post tests in the experimental group(N=162) and the control group(N=121), and the experimental group was subdivided into an on-line group(N=81) and an off-line group(N=81) by educational methodology using e-mail and the postal service. We used the chi-square test, trend test, and paired t-test to test the effectiveness of the program for stomach cancer using a tailored stage-matched messages. Results: To examine the effectiveness of the program for stomach cancer screening by the tailored stage-matched messages, the stage-matched materials were offered to the experimental group(N=162) four times for 4 weeks. The stage-matched materials consisted of the four types for stomach cancer. The tailored message was effective in changing the cognitive-behavioral factors, such as experience process, behavior process, con opinion for stomach cancer, self-efficacy, and the behavioral stages for stomach cancer screening. The stomach cancer screening adherence was higher for the stage-matched materials using postal mail than for those using e-mail. Conclusion: To improve the stomach cancer screening rate, the use of tailored messages for stomach cancer screening will be generated using an expert system. Therefore the implementation of tailored educational program will be supported a partnership between public and private health organizations and increasing awareness of the necessity of community-based interventions.

행위자 기반 모형을 활용한 효율적 검진센터 서비스배분 및 공간조정에 관한 연구 (A Study on the Effective Health Examination Center Distribution and Space Coordination using Agent based Model)

  • 김석태;홍사철
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
    • /
    • 제24권2호
    • /
    • pp.15-25
    • /
    • 2018
  • Purpose: The important things in space plan of a screening center are improving the spatial awareness by space systemization and minimizing the examination time for customers, and reducing the required time of screening work and maximizing the capacity for the screening center. Therefore, we tried to solve the problem of improving spatial awareness and reducing the examination time by using the pedestrian based discrete event simulation at the minimum cost. Methods: We have analyzed the drawbacks and the supplement points by comparing the floor plan at the time of opening and the current floor plan. Based on the analysis, we propose an improved plan which changes the location of the examination rooms and the number of services, and we also verify the improved plan based on simulation analyses. Results: 1) Through the analyses, we derived the drawbacks of the floor plan at the time of opening, and we realized that the current floor plan reflects the drawbacks. 2) The major reasons of the long examination time are the human traffic jam and the occurrence of queues due to unreasonable allocation of services. 3) Through the discrete event simulation analyses, it was possible to specify the place of the queues manually so as to use the given space fairly. 4) Using the discrete event simulation, it was possible to reduce the examination time and to improve the spatial awareness effectively at the minimum cost. Implications: Although the proposed simulation methodology in this paper is an analysis of the existing screening center, we expect that the proposed methodology will be used to develop a more efficient architectural design process by pre-applying the method to the course of designing a screening center and finding the suitability of the proposed method with the matched number of services.

Use of Dynamic Reliability Method in Assessing Accident Management Strategy

  • Jae, Moosung
    • International Journal of Reliability and Applications
    • /
    • 제2권1호
    • /
    • pp.27-36
    • /
    • 2001
  • This Paper proposes a new methodology for assessing the reliability of an accident management, which Is based on the reliability physics and the scheme to generate dynamic event tree. The methodology consists of 3 main steps: screening; uncertainty propagation; and probability estimation. Sensitivity analysis is used for screening the variables of significance. Latin Hypercube sampling technique and MAAP code are used for uncertainty propagation, and the dynamic event tree generation method is used for the estimation of non-success probability of implementing an accident management strategy. This approach is applied in assessing the non-success probability of implementing a cavity flooding strategy, which is to supply water into the reactor cavity using emergency fire systems during the sequence of station blackout at the reference plant.

  • PDF

Screening Colonoscopy Participation in Turkish Colorectal Cancer Patients and their First Degree Relatives

  • Kilickap, Saadettin;Arslan, Cagatay;Rama, Dorina;Yalcin, Suayib
    • Asian Pacific Journal of Cancer Prevention
    • /
    • 제13권6호
    • /
    • pp.2829-2832
    • /
    • 2012
  • Background: This study aimed to research the awareness of screening colonoscopy (SC) among patients with colorectal cancer (CRC) and their relatives. Methodology: A questionnaire form including information and behavior about colonoscopic screening for CRCs of patients and their first-degree relatives (FDRs) was prepared. Results: A total of 406 CRC patients were enrolled into the study, with 1534 FDRs (siblings n: 1381 and parents n: 153). Positive family history for CRC was found in 12% of the study population. Previous SC was performed in 11% of patients with CRC. Mean age of the patients whose FDRs underwent SC was lower than the patients whose FDRs did not (52 vs 57 years; p<0,001). The frequency of SC in FDRs was 64% in patients diagnosed CRC under 35 years of age. Persons having a positive family history of CRC had SC more often (51 vs 22%, p<0,001). FDRs of patients having a higher educational level and income had SC more frequently. Conclusions: When screening for CRC is planned, elderly subjects, those with family history for CRC, and those with low educational and lower income should be given esspecial attention in order that they be convinced to undergo screening for CRC.

폐경여성들의 자궁경부암 검사 경험 (Experience of Cervical Cancer Screening among Menopausal Women)

  • 박소미;김현경
    • 여성건강간호학회지
    • /
    • 제9권1호
    • /
    • pp.28-38
    • /
    • 2003
  • The purpose of this study was to explore the experience of Pap smear screening of menopausal women in W city using a phenomenological methodology. The participants were 5 focus groups consisting of 37 menopausal women. They were selected using snowball sampling method. The data were collected through focus group interviews. Data were recorded and analyzed by Colazzi's method. Significant statements were extracted from the data resulting in 20 themes. These themes formed 12 clusters and 5 categories. The essential themes of the experience of cervical cancer screening emerged as : "unpleasant feelings during procedure", "ambivalent feelings about results", "be guided to seek health", "shrink from interaction with health professionals", "at ease about cervical cancer". The results indicated that cervical cancer prevention strategies for menopausal women need to be based on deep under standing of the personal experiences of Pap smear screening. In conclusion, it is suggested that more specified strategies are needed for menopausal women to encourage them to have regular screening.

  • PDF