• Title/Summary/Keyword: possibility analysis

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SENSITIVITY ANALYSIS IN FUZZY RELIABILITY ANALYSISA

  • Onisawa, Takehisa
    • 제어로봇시스템학회:학술대회논문집
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    • 1988.10b
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    • pp.764-769
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    • 1988
  • In this paper the failure possibility and the error possibility are used to represent reliability of a technical component and that of a human operator, respectively. The failure possibility and the error possibility are fuzzy sets on the interval [0,1]. In a man-machine system, reliability of the technical component and that of the human operator are usually affected by many factors, e.g., the environment in which a machine is operated, psychological stress of the human operator, etc. The possibility is derived from not only the failure or the error rate but also estimates of these factors. The fuzzy reasoning plays an important role in the derivation. The reliability analysis is performed by the use of the possibility obtained by the present method. Moreover this paper discusses the sensitivity analysis which evaluates what extent the change of the estimation of each factor has an influence on reliability of a man-machine system. The important factors to be ameliorated are shown through the sensitivity analysis.

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An Analysis of Environment-friendly Foods Purchase Behavior and Possibility on Entering Chinese Market on the consumers of Shanghai, China (친환경식품의 구매행태 및 중국진출 가능성 분석 - 중국 상하이의 소비자를 중심으로 -)

  • Ro, Chae-Yeong;Cho, Kook-Il;Ahn, Pyong-Ryol
    • Korean Journal of Organic Agriculture
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    • v.16 no.3
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    • pp.259-274
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    • 2008
  • This study was designed to analyze the possibility to enter the Chinese market aggressively by giving light on the factors which have effects on the continuous intention of Shanghai consumers to purchase environment-friendly foods, and the purchase of Korean environment-friendly foods. The objects of analysis were the 209 consumers living in Shanghai, China. As for the analysis method, the frequency, percentage, crossing analysis, $X^2$-test and logistic regression analysis were carried out, making use of SPSS PC+ 13.0. The study results are as follows. Firstly, it was identified that the decisive factors, such as good taste, health of family, freshness, food shop in a department store, international quality authentication, diversity of items and number of family members, had effects on the possibility that the consumers in Shanghai, China would purchase environment friendly foods continuously, showing the meaningful variables. Secondly, as for the decisive factors having effects on the possibility to buy Korean environment friendly foods continuously, it was identified that good taste, health of family, freshness and price cutting were the meaningful variables. Therefore, it is necessary that to set up a export promotion strategy to make the Shanghai consumers get interested in Korean environment-friendly foods and choose to buy the foods.

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A Study on the Impact between the Export Education of SMEs in Busan Region and Export Possibility by Logistic Regression Analysis (로지스틱 회귀분석을 통한 부산 지역 중소기업의 해외수출 교육과 해외수출 가능성에 관한 연구)

  • LIM, Yong-Suk
    • Journal of Fisheries and Marine Sciences Education
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    • v.28 no.1
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    • pp.279-288
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    • 2016
  • The purpose of this research is to examine the impact between the export education of SMEs in Busan Region and export possibility. 62 SMEs in Busan Region were participated in survey. For the empirical analysis, Logistic regression analysis was used with Spss12 to analyze the impact between the involvement on export education and SME's export possibility. In a result, among 3 variables (support, participancy, importance) of involvement on export education, the importance had the influence significantly on export possibility of SMEs. The results indicated that having the intention about the importance of export education is very notable, and implied that it is necessary to develop the education program emphasizing the importance of export education for SMEs' successful export.

A Table Integration Technique Using Query Similarity Analysis

  • Choi, Go-Bong;Woo, Yong-Tae
    • Journal of the Korea Society of Computer and Information
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    • v.24 no.3
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    • pp.105-112
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    • 2019
  • In this paper, we propose a technique to analyze similarity between SQL queries and to assist integrating similar tables. First, the table information was extracted from the SQL queries through the query structure analyzer, and the similarity between the tables was measured using the Jacquard index technique. Then, similar table clusters are generated through hierarchical cluster analysis method and the co-occurence probability of the table used in the query is calculated. The possibility of integrating similar tables is classified by using the possibility of co-occurence of similarity table and table, and classifying them into an integrable cluster, a cluster requiring expert review, and a cluster with low integration possibility. This technique analyzes the SQL query in practice and analyse the possibility of table integration independent of the existing business, so that the existing schema can be effectively reconstructed without interruption of work or additional cost.

Research Related to the Main Factors for Export and SME's Export Possibility (해외수출을 위한 주요 요인들과 중소기업의 해외수출 가능성에 관한 연구)

  • JUNG, Ho-Jin;LIM, Yong-Suk
    • Journal of Fisheries and Marine Sciences Education
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    • v.29 no.1
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    • pp.118-127
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    • 2017
  • The aim of the present study is to research how the main factors for the export of SMEs affect SME's Export possibility in structural method. 62 SMEs in Busan Region were participated in this study. For the empirical analysis, a multiple regression analysis and a path analysis were used with Spss18 and Amos 5v to figure out the relationship between the main factors and SME's Export possibility(SEP). The main factors as variances are "Manpower Needs(MN)", "Technology Innovation Needs(TIN)", "Education Needs for Export(ENE)" and "Intention of Decision-Maker(IDM)". The result indicated that ENE and TIN with IDM could structurally affect SEP through path analysis and implies that the main factors have to be considered with the intention of decision-maker as CEO for the successful export of SMEs.

A Validity Verification of Human Error Probability using a Fuzzy Model (퍼지모델을 이용한 인적오류확률의 타당성 검증)

  • Jang, Tong-Il;Lee, Yong-Hee;Lim, Hyeon-Kyo
    • Journal of the Korean Society of Safety
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    • v.21 no.3 s.75
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    • pp.137-142
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    • 2006
  • Quantification of error possibility, in an HRA process, should be performed so that the result of the qualitative analysis can be utilized in other areas in conjunction with overall safety estimation results. And also, the quantification is an essential process to analyze the error possibility in detail and to obtain countermeasures for the errors through screening procedures. In previous studies for the quantification of error possibility, nominal values were assigned by the experts' judgements and utilized as corresponding probabilities. The values assigned by experts' experiences and judgements, however, require verifications on their reliability. In this study, the validity of new error possibility values in new MCR design was verified by using the Onisawa's model which utilizes fuzzy linguistic values to estimate human error probabilities. With the model of error probabilities are represented as analyst's estimations and natural language expression instead of numerical values. As results, the experts' estimation values about error probabilities are well agreed to the existing error probability estimation model. Thus, it was concluded that the occurrence probabilities of errors derived from the human error analysis process can be assessed by nominal values suggested in the previous studies. It is also expected that our analysis method can supplement the conventional HRA method because the nominal values are based on the consideration of various influencing factors such as PSFs.

Structural and Fatigue Analysis on Bicycle Pedal (자전거 페달에 대한 구조 및 피로 해석)

  • Han, Moon-Sik;Cho, Jae-Ung
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.21 no.1
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    • pp.51-57
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    • 2012
  • This study investigates structural and fatigue analyses at bicycle pedal. Maximum deformation at model 1 is 2 times as much as model 2 at static analysis. Models 1 and 2 have the possibility of the weakest strength at the part of contact with chain gear. Among the cases of nonuniform fatigue loads at Models 1 and 2, 'SAE bracket history' with the severest change of load becomes most unstable but 'Sample history' becomes most stable. In case of 'Sample history' with the average stress of 0 to $-10^4$ MPa and the amplitude stress of 0 to $10^4$ MPa, the possibility of maximum damage becomes 4%. This stress state can be shown with 5 to 7 times more than the damage possibility of 'SAE bracket history' or 'SAE transmission'. The analysis result of this study can be effectively utilized with the safe design of pedal.

Regional Analysis of Dew Possibility in Road Sign Using Meteorological Data (기상자료를 활용한 도로표지 결로의 지역별 발생가능성 분석)

  • Oh, Sei Chang;Kim, Jung Min;Choi, Kee Choo;An, Young Mi
    • International Journal of Highway Engineering
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    • v.15 no.5
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    • pp.195-202
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    • 2013
  • PURPOSES : This study analyzed the regional dew possibility in road sign using meteorological data. METHODS : Four years of meteorological data such as temperature, humidity, dew point, wind velocity were collected and analyzed. As a result of literature review, dew was frequent in large diurnal range, high humidity and weak wind. So, dew possibility was analyzed by (temperature-dew point ${\leq}1^{\circ}C$ and wind velocity ${\leq}$ 1.5m/s). RESULTS : The possibility was analyzed for each meteorological observation point and the point of Suncheon and Bonghwa were selected as the most likely points of dew in road sign. The area of East Coast, Kyungbuk and Kyungnam were relatively low potential. CONCLUSIONS : Alternative with high effect of preventing dew should be selected in high possibility dew area despite of low economics.

Analysis of Landslide Hazard Probability for Cultural Heritage Site using Landslide Prediction Map (산사태예측도에 의한 석조문화재 주변의 산사태재해 가능성 분석)

  • Kim, Kyeong-Su;Lee, Choon-Oh;Song, Yeung-Suk;Cho, Yong-Chan;Kim, Man-Il;Chae, Byung-Gon
    • The Journal of Engineering Geology
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    • v.17 no.3
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    • pp.411-418
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    • 2007
  • It is a very difficult thing to estimate an occurrence possibility location and hazard expectation area by landslide. The prediction difficulty of landslide occurrence has relativity in factor of various geological physical factors and contributions. However, estimation of landslide occurrence possibility and classification of hazard area became available correlation mechanism through analysis of landslide occurrence through landslide data analysis and statistical analysis. This study analyzed a damage possibility of a cultual heritage area due to landslide occurrence by a heavy rainfall. We make a landslide prediction map and tried to analysis of landslide occurrence possibility for the cultural heritage site. The study area chooses a temple of Silsang-Sa Baekjang-Am site and made a landslide prediction map. In landslide prediction map, landslide hazard possibility area expressed by occurrence probability and divided by each of probability degrees. This degree used to evaluate occurrence possibility for existence and nonexistence of landslide in the study site. For the prediction and evaluation of landslide hazard for the cultural heritage site, investigation and analysis technique which is introduced in this study may contribute an efficient management and investigation in the cultural heritage site, Korea.

The Effect of Personal Characteristics, Loan Characteristics and Interest Rate Characteristics on the Delinquency Possibility (개인특성·대출특성·금리특성이 연체가능성에 미치는 영향)

  • Park, Sang-Bong;Oh, Young-Ho
    • Asia-Pacific Journal of Business
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    • v.11 no.3
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    • pp.63-77
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    • 2020
  • Purpose - The purpose of this study is to examine the effects of personal characteristics, loan characteristics, and interest rate characteristics of 2,653 borrowers on the delinquency possibility. In doing so, this study applies both multiple regression and logistic regression models to the data of credit unions in the city of Daegu. Design/Methodology/Approach - The major results of multiple regression analysis using SPSS are as follows. Findings - As for the results of testing the significance of the regression coefficients, it has been found that among the personal characteristics variables membership, credit rating, credit rating changes, and LTV have significant positive (+) effects on the delinquency possibility. Also it has been shown that among the loan characteristics variables loan amount, loan balance, total debt amount, collateral type, collateral amount, and repayment method have significant positive (+) effects on the delinquency possibility. Furthermore it has been found that among the interest rate characteristics variables both overdue interest rate and interest rate spread have positive (+) effects on the delinquency possibility. However, it has been shown that among the personal characteristics variables equity and membership do not have significant effects on the delinquency possibility, and that normal interest rate among the interest rate characteristics variables also do not have a significant effect on the delinquency possibility. Research Implications - By systematically analyzing the variables affecting delinquency possibility based on the results of this study, credit unions might get positive help in improving the system of managing receivables. Furthermore, the results of this study could be extended and applied to other types of financial institutions, so that financial institutions in general will also get some help to systematically manage the delinquency possibility.