• Title/Summary/Keyword: Revised model test

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The Factors Affecting Health Promoting Lifestyle in Patients with Pulmonary Tuberculosis (폐결핵 환자의 건강증진 생활양식과 그 영향 요인)

  • Chon, Mi-Young;Ryu, Eunjung
    • Korean Journal of Adult Nursing
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    • v.16 no.4
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    • pp.575-584
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    • 2004
  • Purpose: To describe the performance in the health-promoting lifestyle and to identify the major factors affecting the health-promoting relationships between self care behaviors and health promoting lifestyle profile in patients with pulmonary tuberculosis. Method: A convenience sample for this study was 172 pulmonary tuberculosis patients who have taken TB medications in urban city. The HPLP-II was selected to measure the concept of health-promoting lifestyle because of the number of research studies conducted using both the original HPLP and the revised HPLP-II. The statistical methods used in this study were t-test, ANOVA, Pearson correlations, and multiple regression. Result: The differences of the HPLP-II were found to have a significance of age, marital status, education level, and health service center. The level of self care behaviors was related positively to the level of health promoting lifestyle and their subcategories. Based on stepwise multiple regression analysis, the model that predicted factors included self care behaviors, age, health service center and education. Conclusion: After decades of decreasing rates, TB has reemerged as a serious national problem in Korea. The careful clinical management and more national concern of TB may help to improve the outcomes of many patients. The findings of this study suggest that TB patients who are more fulfilled in health-promoting lifestyles and self-care behaviors may be able to make better decisions regarding positive health-promoting behaviors.

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The Stability Improvement of Brushless DC Motor by Digital PI Control (디지털 PI제어에 의한 브러시리스 직류모터의 안정도 향상)

  • Yoon, Shin-Yong;Baek, Soo-Hyun;Kim, Yong;Kim, Cherl-Jin;Im, Tae-Bin
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.14 no.1
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    • pp.38-46
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    • 2000
  • This study have established proper mathematical equivalent model of Brushless DC (BLDC) motor and estimated the motor parameter by means of the back-emf measurement as being the step input to the controlled target BLDC motor. And the validity of proposed estimation method is confirmed by the test result of step response. As well, we have designed the reasonable digital controller as a consequence of the root locus method which is obtained from the open-loop transfer function of BLDC motor with hall sensor, and the determination of control gain for variable speed control. Here, revised Ziegler-Nichols tuning method is applied for the proper digital gain establishment, and the system stability is verified by the frequency domain analysis with Bode-plot and experimentation.

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Development of Threshold Runoff Simulation Method for Runoff Analysis of Jeju Island (제주도 유출분석을 위한 한계유출 모의기법 개발)

  • Chung, Il-Moon;Lee, Jeong-Woo;Kim, Ji-Tae;Na, Han-Na;Kim, Nam-Won
    • Journal of Environmental Science International
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    • v.20 no.10
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    • pp.1347-1355
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    • 2011
  • In Jeju island, runoff has frequently happened when the rainfall depth is over a threshold value. To simulated this characteristic rainfall-runoff model structure has to be modified. In this study, the TRSM (Threshold Runoff Simulation Method) was developed to overcome the limitations of SWAT in applying to the hydrologic characteristics of Jeju island. When the precipitation and soil water are less than threshold value, we revised the SWAT routine not to make surface/lateral or groundwater discharge. For Hancheon watershed, the threshold value was set as 80% of soil water through the analysis of rainfall-runoff relationship. Through the simulation of test watershed, it was proven that TRSM performed much better in simulating pulse type stream flow for the Hancheon watershed.

The BRQ(Brand Relation Quality) Construct Perceived by Fashion Product Consumers (Part 2) (패션상품 소비자가 인식하는 상표관계본질(BRQ: Brand Relationship Quality) 규명 (제2보))

  • Chae, Jin-Mie;Rhee, Eun-Young
    • Journal of the Korean Society of Clothing and Textiles
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    • v.31 no.8
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    • pp.1168-1179
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    • 2007
  • The objective of this research is to validate the BRQ(Brand Relationship Quality) Construct perceived by fashion product consumers. In order to establish and verify the BRQ scale, qualitative survey and quantitative survey were conducted together. 1592 copies of questionnaire were distributed to women in their 20s to 40s living in Seoul and other metropolitan areas from Dec. 26, 2005 to Jan. 8, 2006, and 723 copies of them were used for statistical data. Samplel(n=482)was used for empirical analysis, and sample2(n=241) was used for cross validity test. The data was analyzed using Exploratory Factor Analysis, Confirmatory Factor Analysis, and Pearson's Correlation Analysis. BRQ emerged from exploratory factor analysis as the hierarchical construct composed of six facets including 'self-connective attachment', 'symbol/mystery', 'trust', 'nostalgia', 'intimacy', and 'knowledge'. As the fit of this structural model was not good as a result of Confirmatory Factor Analysis, it was revised to have better fitting. Finally, empirical survey results indicate the hierarchical construct consisting of eight distinct BRQ facets including 'love/commitment', 'self-connection', 'symbol', 'mystery', 'trust', 'nostalgia', 'intimacy', and 'knowledge' as best representing the final 39item BRQ Scale. Reliability, construct validity, and cross validity of the construct were verified.

The relationships between moral distress and quality of nursing care in oncology nurses (암 병동 간호사의 도덕적 고뇌와 암 환자 간호의 질과의 관계)

  • Kim, Sae Mi;Shin, Yong Soon
    • The Journal of Korean Academic Society of Nursing Education
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    • v.26 no.4
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    • pp.366-373
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    • 2020
  • Purpose: The study aimed to investigate the relationship between moral distress and the quality of nursing care. Methods: This cross-sectional correlation study included nurses working at oncology nursing units of two secondary general hospitals in Seoul and Gyeonggi-do, Korea. A total of 207 nurses participated. Moral distress was measured by the Moral Distress Scale-Revised Nurse Questionnaire and quality of nursing care was evaluated by the Quality of Oncology Nursing Care Scale. Data were collected from October 5 to 31, 2018. Data analysis included descriptive statistics, independent t-test, ANOVA, Pearson's correlation coefficient and multiple regression analysis. Results: The quality of oncology nursing care showed a negative correlation with moral distress (r=-.19, p=.007). The factors affecting the quality of oncology nursing care were religion (β=-.22, p=.001), clinical experience in oncology units (β=.27, p=.007), and moral distress (β=-.16, p=.018). Moral distress showed a statistically significant predictive power of 13% in the regression model (F=8.70, p=<.001). Conclusion: The findings of this study suggest that management of moral distress is important to increase the quality of oncology nursing care.

A Study on Numerical Simulation for Predicting of Unmanned Undersea Vehicle's Manoeuvrability (수중운동체의 조종성능 예측을 위한 수치시뮬레이션에 대한 연구)

  • Bae, Jun-Young
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.10a
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    • pp.83-85
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    • 2015
  • The Purpose of this paper was to carry out basic study on development of real-time submarine-hnadling simulator. The author adopt the Unmanned Undersea vehicle(UUV), which has taken the shape of manta[1]. They call here it Unmanned Undersea Vehicle(UUV). UUV is based on the same design concept as UUV called Manta Test Vehicle, which was originally built by the Naval Undersea Warfare Center, USA[1]. The present study deals with prediction of manoeuvring motion of UUV at general drift angles and large drift angles. The dynamic mathematical model with six degrees of freedom is revised and supplemented in order to describe accurately motion of UUV. The hydrodynamic derivatives related to motion are obtained from previous work[2].

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Effect of Professional Quality of Life on the Professional Self-Concept of Intensive Care Unit Nurses in Tertiary Hospital (상급종합병원 중환자실 간호사의 전문직 삶의 질이 전문직 자아개념에 미치는 영향)

  • Hong, Jin Young;Sohn, Sue Kyung
    • Journal of Korean Critical Care Nursing
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    • v.12 no.2
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    • pp.13-25
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    • 2019
  • Purpose : The purpose of this study was to identify factors influencing the professional self-concept of nurses working in intensive care units (ICUs). Methods : Data were collected from July 1 to August 15, 2014. The subjects were 206 ICU nurses working in four university hospitals in B and U cities, Korea. Their professional self-concept was measured using Arthur's Scale revised by Yoon (2012), and professional quality of life (QOL) was measured using Pro QOL Korean Ver. 5 developed by Stamm (2010). Data were analyzed with SPSS Ver. 18, using a t-test, ANOVA, Pearson's correlation coefficient, and multiple regression analysis. Results : Professional self-concept was significantly correlated with compassion satisfaction (r=.61, p<.001), and burn out (r=-.57, p<.001). The factors influencing professional self-concept were compassion satisfaction (${\beta}=.46$, p<.001), burn out (${\beta}=-.27$, p<.001), and education level (${\beta}=.14$, p =.014). The explanatory power of this model was 46.5%. Conclusion : The results suggest that the influencing factors found in this study should be considered when planning nursing intervention programs for improving the professional self-concept of ICU nurses.

A new time-frequency analysis and structural instantaneous frequency extraction method based on modified spline-kernelled chirplet transform

  • Dong-Yan Xue;Ping-Ping Yuan;Zhou-Jie Zhao;Wei-Xin Ren
    • Smart Structures and Systems
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    • v.33 no.6
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    • pp.385-398
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    • 2024
  • To improve the accuracy of time-frequency analysis (TFA) and instantaneous frequency (IF) extraction of structural dynamic response signals, this paper improves the spline-kernelled chirplet transform, and a new form of modified spline-kernelled chirplet transform (MSCT) based on revised Gaussian window function and energy concentration principle is put forward. The effectiveness of the proposed method is verified by numerical examples of single-component signal, multicomponent signal, single-degree-of-freedom Duffing nonlinear system and two-layer shear frame structure model. Then, a time-varying cable test is designed to collect the acceleration response signals under linear changing tension, and the IF extraction of these signals is performed by using MSCT, which further verifies the effectiveness and accuracy of this method. Through numerical simulation and experimental verification, it is proved that the proposed method can effectively extract the IF of nonlinear structure and time-varying structure.

A Study on Developing and Validating the Modern Physics Conceptual Diagnostic Survey for Pre-Service Physics Teachers based on the 2015 Revised National Science Curriculum (2015 개정 과학과 교육과정에 기초한 예비 물리교사를 위한 현대물리 개념 진단지 개발 및 타당화 연구)

  • Kim, Wanseon;Kim, Sung-Won
    • Journal of The Korean Association For Science Education
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    • v.40 no.3
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    • pp.253-269
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    • 2020
  • This study aims to develop items to diagnose pre-service physics teachers' understanding of the conceptual knowledge of modern physics, based on the achievement criteria presented in the 2015 revised national science curriculum, and to identify the validity and reliability of the newly developed items. Data were collected from 467 pre-service physics teachers in the Physical Education Department or Science Education Department (Physics Education Major) of 15 universities across the nation. In this study the content validity, substantive validity, the internal structure validity, generalization validity, and the external validity proposed by Messick (1995) were examined by various statistical tests. The results of the MNSQ analysis showed that there was no nonconformity in the 23 items. The internal structure validity was confirmed by the standardized residual variance analysis, which shows that the 22 items was unidimensional. The generalization validity was confirmed by differential item functioning (DIF) analysis about groups lectured or not modern physics/quantum mechanics. In addition, item analysis and test analysis based on classical test theory were performed. The mean item difficulty is 0.66, mean item discrimination is 0.47 and mean point biserial coefficient obtained was 0.41. These results for item parameters satisfied the criteria respectively. The reliability of the internal consistency of the KR-20 is 0.77 and the Ferguson's delta obtained was δ = 0.972. By Rasch model analysis, the item difficulty (item measures) was discussed.

Assessment of Main Management Components for Successful University Foodservice Operations By Using SERVQUAL Model (대학 급식소의 성공적인 운영을 위한 필수관리요소 평가 : 서브퀄모델을 활용한 서비스품질관리 활동 평가)

  • Gwak, Dong-Gyeong;Jang, Hye-Ja
    • Journal of the Korean Dietetic Association
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    • v.3 no.2
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    • pp.123-140
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    • 1997
  • The purpose of this study were to assess main management components that can lead to successful university foodservice operations. Specifically, it was intended to develop the tool which assesses the service quality, management, to assess the difference between customer importance from and perceptions of service quality, to compare management perceptions of customer importances with actual service delivery, and to identify internal problems which affect service quality with the use of gap model. Three types of questionnaires were developed and implemented for customers, foodservice personals and foodservice manager. Assessment tools were developed based on the literature review, SERVQUAL, GAP model, and the pilot study. Through the validity and reliability test, the questionnaires were revised. Questionnaires were distributed to 900 university students, 207 foodservice personnels, and 54 foodservice manager respectively. 831 university students, 177 foodservice personnels, and 48 foodservice manager were responded with a response rate of 92.3%, 85.5%, and 88.8% respectively. Statistical data analysis was completed using the SPSS programs for descriptive analysis, ANOVA. and SNK test. The results of this study can be summarized as follows : 1. In quality service management components, 31 quality service attributes were categorized and named into primary quality, secondary quality, hygiene, empathy, tangibles, reliability, responsiveness, and price by the factor analysis. 2. Importance mean score of customers was 4.02 out of 5, but perception mean score of customers was 2.55. So there was a relative big gap(1.47) between importance and perception scores, especially in three dimensions of responsiveness, primary quality, and hygiene. 3. It showed that customers' mean scores of perceived service quality by dimensions were the following order : price > reliability > secondary quality > hygiene > tangibles > primary quality > responsiveness > empathy. And the perception mean score of rented(2.59) or contracted(2.58) management was significantly higher than that of self-operated(2.48). 4. Customers' importances mean score which internal customers recognize was 4.23 out of 5, but service delivery mean score was 3.85. So there was a little gap(0.39) between management perceptions of customer importances and actual service delivery. 5. In gap model, SERVQUAL score showed -1.47, Gap 1 positive 0.15, gap 2 negative 0.61, and gap 3 was positive 0.19. 6. The internal problems were as follows : (1) The managers of University foodservice perceived well enough the customers' expectation value but their management competency was lacked in terms of responding customer needs, (2) The foodservice staff perceived service performance more highly than service quality specifications.

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