• Title/Summary/Keyword: reliability factors

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The Effect of Startup Internship Education Service Quality on Entrepreneurial Capability and Entrepreneurial Intentions (창업인턴십교육 서비스 품질이 창업역량과 창업의지에 미치는 영향)

  • Yoo, Hong-Sung;Cho, Chul-Ho
    • Journal of Korean Society for Quality Management
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    • v.44 no.4
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    • pp.907-920
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    • 2016
  • Purpose: This study was designed to examine the casual relationships among startup internship service quality and entrepreneurial capability, entrepreneurial intention in startup education. Also, we intended to explore significant factors on use entrepreneurial intention through causal model analysis in the viewpoint of total effect. Methods: Questionnaire, as a research tool, has gotten validity and reliability through literature study, exploratory study and pretest and sample 123 was selected. To carry out statistical treatment of pretest and main analysis, SPSS18.0 were employed and regression model was employed as analysis method. Results: Result of this study shows as follows. Three factors (empathy, responsiveness and assurance) have an effect entrepreneurial capability and entrepreneurial intention. We found that with an importance of empathy, responsiveness and assurance can be useful and significant factors in causal relationship of startup internship education. Conclusion: The present study shows that three factors(empathy, responsiveness and assurance) in via of entrepreneurial capability and entrepreneurial intention, were important factors that related startup education have to emphasize to raise performance, And also we confirmed new 5 factor 'empathy, responsiveness, assurance, reliability and tangibles'through this study. However, the present study has some limitations to be studied in the future.

Evaluation of Partial Safety Factors for Armor Units of Coastal Structures (피복재의 부분안전계수 산정)

  • Lee, Cheol-Eung
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.19 no.4
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    • pp.336-344
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    • 2007
  • A method is developed to evaluate partial safety factors for armor units, by which uncertainties of random variables in reliability function as well as wave height distribution with service periods could take into account straightforwardly. It is found that partial safety factors for resistance and wave height are correctly increased with improving target levels on failure of coastal structures at the same return and service periods. Therefore, it nay be possible to determine design variables through the same processes as those of deterministic method by using the partial safety factors for resistance and wave height evaluated in this paper, since uncertainties of random variables and the effects of service periods and target probability failure are directly considered in the processes of evaluation of partial safety factors.

A Study on the Factors affecting Usage of e-business in the Shipping Companies (해운기업의 e-비즈니스 활용과 영향요인에 관한 연구)

  • Cho, Kyung-Woo
    • Journal of Navigation and Port Research
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    • v.30 no.8 s.114
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    • pp.669-674
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    • 2006
  • The purpose of this study is to examine the effects of the factors on the usage level of e-business in the shipping companies. In order to do empirical analysis, firstly, this study carried out reliability analysis and factor analysis. Secondly, this study examined the effects of the factors on the usage level of e-business in the shipping companies by multiple regression analysis. In conclusion, the analysis result revealed that 5 factors effect on the service business usage's level and 4 factors effect on the real transaction usage's level of e-business.

Robust Design of Main Control Valve for Hydraulic Pile Hammer Flexible Control System

  • Guo, Yong;Hu, Jun Ping;Zhang, Long Yan
    • International Journal of Fluid Machinery and Systems
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    • v.9 no.1
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    • pp.28-38
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    • 2016
  • The flexible control system for hydraulic pile hammer using main control valve is present to the requirement of rapidly reversing with high frequency. To ensure the working reliability of hydraulic pile hammer, the reversing performance of the main control valve should commutate robustness to various interfere factors. Through simulation model built in Simulink/Stateflow and experiment, the effects of relative parameters to reverse performance of main control are analyzed and the main interfere factors for reversing performance are acquired. Treating reverse required time as design objects, some structure parameters as control factors, control pressure, input flow and gaps between spool and valve body as interfere factors, the robust design of the main control valve is done. The combination of factors with the strongest anti-jamming capability is acquired which ensured the reliability and anti-jamming capability of the main control valve. It also provides guidance on design and application of the main control valve used in large flow control with interferes.

Factors Influencing New Media Exposure of Political News by Youths in Isan Society

  • Jitsaeng, Khanittha;Chaikhambung, Juthatip
    • Journal of Information Science Theory and Practice
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    • v.10 no.2
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    • pp.86-101
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    • 2022
  • This research aimed at studying the factors that influence new media exposure of political news by youths in Isan society in Thailand. The target group comprised 1,200 individuals, obtained from multi-stage sampling from undergraduate students in Isan's autonomous universities, governmental universities, and private institutions. The data collection tool was a questionnaire, the content of which was validated by experts. The reliability of the tool was tested by the formula for Cronbach's alpha coefficient, which yielded a reliability of 0.83. Multiple regression analysis was applied to analyze the data. The results, regarding factors influencing the channels for political news exposure, showed that channels for political news exposure were mostly influenced by inner drives, followed by importance in political news exposure, influence from social networks, and specific characteristics of the Internet. This could explain the variation of channels for political news exposure at 46.5%. In terms of factors influencing political news selection, it was found that political news selection was influenced mostly from social networks, followed by inner drives, benefits from political news exposure, specific characteristics of the Internet, and the field of study. The variation of the political news selection could be explained at 44.6%. These results elaborate on the current situation in Thailand, especially in Isan region, where youths in higher education are playing an increasing role in demonstrating their political stance through various political activities.

The Effect of Sports Club Membership Lifestyle on Choice Behavior

  • Sunmun Park;Shuo LI
    • International Journal of Advanced Culture Technology
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    • v.11 no.2
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    • pp.267-275
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    • 2023
  • The purpose of this study is to investigate the influence of sports center members' lifestyles on participation promotion and choice behavior. To this end, more specifically, we intend to establish and clarify a hypothetical model based on the preceding studies of facilitating factors and factors that continue to participate according to the lifestyle of sports center members. In order to achieve this research purpose, the study subjects were set as the population of male and female adults over 20 who are using sports centers in Gwangju Metropolitan City and Jeollanam-do in 2021. As for the sampling method, the sample was extracted using cluster random sampling, and 300 people were used for the actual analysis, excluding 60 copies of double-entry and insincere or unreliable questionnaires. The survey tool was modified and supplemented according to this study based on the questionnaire that had been verified for reliability and validity in previous studies, and all questionnaire items were composed of a 5-point scale. The statistical analysis used for data analysis was frequency analysis, exploratory factor analysis, reliability analysis, and multiple regression analysis using SPSS Windows 21.0 Version. The conclusions obtained in this study through data analysis by such methods and procedures are as follows. First, according to the lifestyle of sports center members, participation promotion factors were found to have a partial influence. Second, according to the lifestyle of sports center members, the selection behavior was found to have a partial influence. Third, it was found that the participation promotion factors of sports center members partially affected the choice behavior.

Development of Load and Resistance Factor Design of Mound Breakwater Against Circular Failure (경사식 방파제 원호파괴에 대한 하중저항계수 설계법 개발)

  • Kim, unghwan;Huh, Jungwon;Lee, Kicheol;Kim, Dongwook
    • Journal of the Korean Geosynthetics Society
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    • v.18 no.4
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    • pp.205-214
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    • 2019
  • Load and resistance factor design of mound breakwater against circular failure was developed in this study. To achieve the goal, uncertainties of parameters of soils, mound, and concrete cap were determined. Eight design cases of domestic mound breakwaters were collected and analyzed. Monte Carlo Simulation was implemented to determine the most critical slip surfaces of the design cases. Using the results of Monte Carlo Simulation, First-Order Reliability Method (FORM) was used to perform reliability analyses. Optimal load and resistance factors were calculated using the reliability analysis results and final load and resistance factors were proposed based on the calculated optimal factors.

Reliability and Validity of Korean Version of FACIT-dyspnea 10 Item Short Form in Patients With Cancer (암 환자에 대한 한국어판 FACIT-호흡곤란 10개 항목 단축형 설문지의 신뢰도와 타당도 분석)

  • Ku, Bon-il;Oh, Duck-won;Lee, Min-ji;Kim, Seong-kyeong
    • Physical Therapy Korea
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    • v.27 no.2
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    • pp.111-117
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    • 2020
  • Background: The Functional Assessment of Chronic Illness Therapy (FACIT) for Dyspnea was developed to assess multidimensional dyspnea using two subscales (experience of dyspnea and functional limitation) and a total score. Objects: This study aimed to assess the reliability and validity of the Korean version of the FACIT-dyspnea 10-item short form questionnaire (FACIT-dyspnea-K). Methods: Subjects were 163 patients with cancer. Dyspnea-related scales (modified Medical Research Council scale [mMRC], European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 [EORTC QLQ-C30], Hospital Anxiety and Depression [HAD], and WHO Performance Scale) were used to validate the FACIT-dyspnea-K. Results: Internal consistency was confirmed by Cronbach's alpha values of 0.90 and 0.95 in factors 1 and 2, respectively. Convergence validity was determined by comparing the two factors and total score of the FACIT-dyspnea-K with conceptually related assessment tools measuring the physical and emotional effects of dyspnea, with which correlations ranged from 0.364 to 0.567. Criterion validity was established by significant differences in the FACIT-dyspnea-K score between groups when the patients were classified by performance status as assessed by the WHO performance scale. Furthermore, the FACIT-dyspnea-K showed notable correlations with other dyspnea scales (mMRC, EORTC QLQ-C30, and HAD) for cancer patients (r = 0.28 to 0.54). The test-retest reliability of the two factors and total score of the FACIT-dyspnea-K appeared to be excellent (Cronbach's alpha = 0.96 to 0.97). Conclusion: This study supports FACIT-dyspnea-K as a valid and reliable instrument to assess the dyspnea experience of cancer patients in clinical settings.

Proposal of Return Period and Basic Wind Speed Map to Estimate Wind Loads for Strength Design in Korea (강도설계용 풍하중 평가를 위한 재현기간과 기본풍속지도의 제안)

  • Ha, Young-Cheol
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.34 no.2
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    • pp.29-40
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    • 2018
  • Strength design wind loads for the wind resistance design of structures shall be evaluated by the product of wind loads calculated based on the basic wind speed with 100 years return period and the wind load factor 1.3 specified in the provisions of load combinations in Korean Building Code (KBC) 2016. It may be sure that the wind load factor 1.3 in KBC(2016) had not been determined by probabilistic method or empirical method using meteorological wind speed data in Korea. In this paper, wind load factors were evaluated by probabilistic method and empirical method. The annual maximum 10 minutes mean wind speed data at 69 meteorological stations during past 40 years from 1973 to 2012 were selected for this evaluation. From the comparison of the results of those two method, it can be found that the mean values of wind load factors calculated both probability based method and empirical based method were similar at all meteorological stations. When target level of reliability index is set up 2.5, the mean value of wind load factors for all regions should be presented about 1.35. When target level of reliability index is set up 3.0, wind load factor should be presented about 1.46. By using the relationship between importance factor(conversion factor for return period) and wind load factor, the return periods for strength design were estimated and expected wind speeds of all regions accounting for strength design were proposed. It can be found that return period to estimate wind loads for strength design should be 500 years and 800 years in according to target level of reliability index 2.5 and 3.0, respectively. The 500 years basic wind speed map for strength design was suggested and it can be used with a wind load factor 1.0.

Development of Yin-Deficiency Questionnaire and Examine the Reliability and Validity (음허증 측정도구의 개발 및 신뢰도 타당도 검정)

  • Lee Sang Jae;Park Jong Bae;Lee Song Shil;Kim Kwang Ho
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.18 no.2
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    • pp.376-380
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    • 2004
  • The purpose of this study is the develop a questionnaire for measuring Yin-Deficiency and examine the reliability and validity for its' value as a barometer for evaluating Yin-Deficiency. Questionnaire was developed according to the symptoms of Yin-Deficiency suggested in the 'Standardization of diagnostic terms and requirements of Korean Medicine', With and as a reference, each symptom has been worked on to be put on the questionnaire. Visual analogue scales(VAS) was used as a barometer for measuring frequency of manifestation of symptoms. A study was performed to measure validity and reliability of the final questionnaire for analysis. reliability of YinDQ was measured by Cronbach's alpha coefficient and test-retest method. This study utilized factor analysis and clinical validity for evaluation of validity. For the purpose of decreasing the amount of data-the number of factors, and at the same time minimize the loss of information factor analysis was performed Component factors were extracted using Principal Component Analysis. This study evaluated the clinical validity for examination of difference between the normal group and the patient group. Evaluation on the's internal consistency showed strong internal consistency with value of 0.8615. reliability from test-rest with three-week interval, followed by comparisons of the correlation coefficient and mean values of each item between the two. The Spearman correlation coefficient was 0.54-0.79. By factor analyse two factors with Eigen value of greater than 2.2 were selected. Factor 1 consists of items of 'irritable fever on the five Hearts', 'flushing of the zygomatic region in the afternoon', 'tidal fever', 'night sweats', and 'dryness on the mouth or the throat'. Factor two consists of items of 'emaciation', 'dizziness', 'insomnia', 'decreased amount of urine with yellowish color', and 'constipation'. The comparison between the patient group and the normal group showed significant differences for every ten questions. The results implies that YinDQ is a barometer with sufficient reliability and validity. The questionnaire for Yin-Deficiency may not be enough to replace the specific differential diagnosis by a doctor of Oriental medicine. Nevertheless, it can be effectively utilized as an assisting method in consultation or a method of measuring the degree of Yin-Deficiency in a group.