• Title/Summary/Keyword: Confidence point

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FMEA를 이용한 기계류 시스템의 신뢰도 분석 (Reliability Analysis of Machinery system for Failure Mode and Effect Analysis)

  • 진도훈;우태수;이치우
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2002년도 추계학술대회 논문집
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    • pp.30-35
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    • 2002
  • This paper dealt with FMEA, which is a method of the analysis to secure safety and confidence coming up to customers'expectation in consideration of the environment of the corporation, the industrial environment, and the functional improvement. And by using FMEA, We showed the example analyzed the confidence of the Air Supply System. It was proved by the result of the analysis that the rate of the breakdown which is usually regarded as the first important point to reform can't satisfy the selecting basis to improve. Also the result said that it is not right to depend on only the rate of the failure in making the list of the reform. Through the analysis of the breakdown, FMEA can present the important factors of the reform to improve the confidence of the system. In this study would show the important factors of the improvement in order to product the goods guaranteed confidence through the method of FMEA.

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응급구조과 학생의 환자안전에 대한 지식 및 태도가 환자안전관리 자신감에 미치는 영향 (Knowledge, attitude and confidence on patient safety management among emergency medical technician students)

  • 함영림;박미정;이해영
    • 한국응급구조학회지
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    • 제21권1호
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    • pp.75-85
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    • 2017
  • Purpose: This study evaluated the effects of knowledge and attitude on confidence about patient safety management among emergency medical technician (EMT) students. Methods: A self-reported questionnaire was completed by 174 EMT students in two cities from May to June 2016. Data were analyzed using PASW WIN 20.0 for descriptive statistics, t-test, one way analysis of variance, and hierarchical multiple regression. Results: The students' confidence about patient safety management was 3.33 (on a 5-point scale). Confidence varied according to average academic grade (p=.015), experience in patient safety education, and experience in writing medical error reports. After adjusting for sex, average academic grade, and experience in patient safety education, knowledge and attitudes about patient safety increased a student's confidence in patient safety management by 19%. Conclusion: Patient safety education should be included in programs on health promotion and be provided as basic information in intervention programs for EMTs.

Effect of PBL on Self Leadership, Nursing Leadership, Confidence in Nursing Students Applying Flipped Learning

  • Park, Jung-Ha
    • International Journal of Advanced Culture Technology
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    • 제9권4호
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    • pp.162-168
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    • 2021
  • This is a group pretest-posttest design study that aim to evaluate the effect of problem-based learning using flipped learning to self leadership, nursing leadership, and confidence of nursing students. The subjects were 87 4th nursing students who took nursing management from March 15 to April 26, 2021. A questionnaire was used to measure self leadership, nursing leadership, and confidence. The measurement of self leadership is a 5-point Likert scale that employs a questionnaire. Flipped learning uploaded a 5-8 minute lecture video, and the subjects learned on learning management system, using smart device. PBL teaching was developed about personal growth, cooperation, nursing excellence, creative problem solving, influence. As a result of the study, self leadership was significantly improved after education than before education(t=-6.27, p<.001). Nursing leadership and confidence were significantly changed before and after education(t=-16.10, p<.001; t=-2.37, p<.001). According to the results of this study, the PBL teaching method using flipped learning is an effective teaching and learning strategy for improving leadership, and confidence. In future studies, it will be necessary to develope and verify specific teaching and learning methods by applying nursing experts in consideration of the type of leadership.

A Study on the Change of Clinical Self-Confidence according to the Number of Clinical Dental Hygiene Practices of Students in the Department of Dental Hygiene - Focusing on scaling practices -

  • 최용금;김미선;정수라;김은정
    • 대한치위생과학회지
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    • 제3권2호
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    • pp.39-49
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    • 2020
  • The purpose of this study was to provide the basic data needed to plan the effective teaching design of scaling education and to measure the changes in students' confidence in performing scaling according to the number of scaling practices. Scaling education is presented as a core basic hygiene competency of dental hygienists and evaluated as the practical competency of dental hygienists. This study selected 48 third-year students from the department of dental hygiene at S University in Asan, and analyzed data from completed participant surveys. The degree of "confidence in facing the subject in clinical practice," "confidence in applying hand instrument to the subject," and "confidence in applying ultrasonic instruments to the subject" was assessed on a five-point Likert scale. The difference in confidence was analyzed during five practice sessions. Each response was compared using frequency analysis, chi-square test, and repeated measurement ANOVA. Students who complained of a lack of confidence in the 14.6%, 25.0%, and 12.5%, respectively, in face-to-face practice, hand instruments, and ultrasonic instrument application responses. The more the practice was repeated, the more confident students were in all three categories, and the more statistically significant (p<0.001). As the number of scaling practice sessions increased, students' confidence in performing scaling also improved. In particular, the level of self-confidence was higher after the third practice session when compared to the first session. Therefore, it is necessary to design effective courses for teaching scaling practices so that at least three repetitive practice periods can be provided in clinical dental hygiene practices.

임산부 한의약건강증진프로그램의 효과 (Effect of Korean medicine health promotion program for maternal health)

  • 서주희;지은영;이현지;박민정
    • 대한한의학회지
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    • 제40권2호
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    • pp.106-118
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    • 2019
  • Objectives: The aim of this study is to survey on the effect of Korean medicine health promotion program for maternal health. Methods: We conducted Korean medicine health promotion program for maternal health to pregnant women who agreed to participate in this program among 10 public health center. Before and after program, we surveyed the Knowledge Score of Maternal Health Care, Practice of Health Behavior, (Traditional) Child Care Recognition, Depression, Child Caring Confidence and analyzed DID(Difference In Difference). Results: The Knowledge Score of Maternal Health Care of intervention group was improved about 1 point. The improvement of (Traditional) Child Care Recognition was significant. Depression score of intervention group was improved high significantly. The Child Caring Confidence of intervention group was improved about 1.3 point. Conclusion: As a result of analyzing the effect of Korean medicine health promotion program for maternal health, it is confirmed that this program can have an impact on improving Knowledge Score of Maternal Health Care, (Traditional) Child Care Recognition, Depression, Child Caring Confidence. It will be necessary to continue and develop this program widely.

Estimating the Difference of Two Normal Means

  • M. Aimahmeed;M. S. Son;H. I. Hamdy
    • Communications for Statistical Applications and Methods
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    • 제7권1호
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    • pp.297-312
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    • 2000
  • A three stage sampling procedure designed to estimate the difference betweentwo normal means is proposed and evaluated within a unified decision-theoretic framework. Both point and fixed-width confidence interval estimation are combined in a single decision rule to make full use of the available data. Adjustments to previous solutions focusing on only one of the latter objectives are indicated. The sensitivity of the confidence interval for detecting shifts in true mean difference is also investigated Numerical and simulation studies are presented to supplement the theoretical results.

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해상 탐지 영상에서의 비행체 표적 선정에 관한 연구 (A Study on Target Selection from Seeker Image of Aerial Vehicle in Sea Environment)

  • 김기범;백인혜;권기정
    • 한국군사과학기술학회지
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    • 제20권5호
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    • pp.708-716
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    • 2017
  • We deal with the target selection in seeker-detection image through network, using the detection information from aerial vehicle and the target information from surveillance and reconnaissance system. Especially, we constrain the sea battle environment, where it is difficult to perform scene-matching rather than land. In this paper, we suggest the target selection algorithm based on the confidence estimation with respect to distance and size. In detail, we propose the generation method of reference point for distance evaluation, and we investigate the effect of pixel margin and target course for size evaluation. Finally, the proposed algorithm is simulated and analyzed through several scenarios.

Parameter Recovery for LIDAR Data Calibration Using Natural Surfaces

  • Lee Impyeong;Moon Jiyoung;Kim Kyoung-ok
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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    • pp.642-645
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    • 2004
  • This paper focuses on recovering systematic biases during LIDAR calibration, particularly using natural surfaces as control features. Many previous approaches have utilized all the points overlapping with the control features and often experienced with an inaccurate value converged with a poor rate due to wrong correspondence in pairing a point and the corresponding control features. To overcome these shortcomings, we establish a preventive scheme to select the pairs of high confidence, where the confidence value is based on the error budget associated with the point measurement and the linearity and roughness of the control feature. This approach was then applied to calibraring the LIDAR data simulated with the given systematic biases. The parameters were successfully recovered using the proposed approach with the accuracy and convergence rate superior to those using the previous approaches.

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Multistage Point and Confidence Interval Estimation of the Shape Parameter of Pareto Distribution

  • Hamdy, H.I.;Son, M.S.;Gharraph, M.K.;Rashad, A.M.
    • Communications for Statistical Applications and Methods
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    • 제10권3호
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    • pp.1069-1086
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    • 2003
  • This article presents the asymptotic theory of triple sampling procedure as pertain to estimating the shape parameter of Pareto distribution. Both point and confidence interval estimation are considered within the same inference unified framework. We show that this group sampling technique possesses the efficiency of Anscome (1953), Chow and Robbins (1965) purely sequential procedure as well as reduce the number of sampling operations by utilizing Stein (1945) two stages procedure. The analysis reveals that the technique performs excellent as far as the accuracy is concerned. The present problem differs from those considered by many authors, in multistage sampling, in that the final stage sample size and the parameter's estimate become highly correlated and therefore we adopted different approach.

Modified information criterion for testing changes in generalized lambda distribution model based on confidence distribution

  • Ratnasingam, Suthakaran;Buzaianu, Elena;Ning, Wei
    • Communications for Statistical Applications and Methods
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    • 제29권3호
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    • pp.301-317
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    • 2022
  • In this paper, we propose a change point detection procedure based on the modified information criterion in a generalized lambda distribution (GLD) model. Simulations are conducted to obtain empirical critical values of the proposed test statistic. We have also conducted simulations to evaluate the performance of the proposed methods comparing to the log-likelihood method in terms of power, coverage probability, and confidence sets. Our results indicate that, under various conditions, the proposed method modified information criterion (MIC) approach shows good finite sample properties. Furthermore, we propose a new goodness-of-fit testing procedure based on the energy distance to evaluate the asymptotic null distribution of our test statistic. Two real data applications are provided to illustrate the use of the proposed method.