• Title/Summary/Keyword: reliability index

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Validation of a Dwelling Depression Scale Based on Analysis of Projective Images (투사이미지 분석기반 고령자 주거우울 척도 타당화 연구)

  • Lee, Yewon;Park, Chongwook;Woo, Sungju
    • The Journal of the Convergence on Culture Technology
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    • v.4 no.2
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    • pp.1-7
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    • 2018
  • As the living environment is regarded as a key factor that affects the quality of life of the elderly, the necessity for an accurate measurement of depression for the elderly has increased. In order to diagnose accurately, it is crucial to consider variables such as the cognitive characteristics and living conditions. In this study, 301 persons over 65 years old who live in single and couple elderly households over 65 years were surveyed from 1 January 2018 to 2 February to measure the dwelling depression by applying projective images. The correlations between the dwelling depression and projective images are clarified and the reliability of the questionnaire was evaluated. The correlations between the geriatric dwelling depression index(GDDI) and the GDDI based on projective images(GDDI-I) are clarified. The accuracy of the GDDI-I is analyzed. As a result the projective image questionnaire has a correlation with the existing self-report questionnaire. It is hoped that the results will provide a basis for further researches on psychological diagnoses using the projective method.

Content analysis of Broadcast Graphic for TV Election Returns Broadcasting (TV선거개표방송의 방송그래픽 내용분석)

  • Shin, Yoo-Seop
    • The Journal of the Korea Contents Association
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    • v.9 no.12
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    • pp.130-137
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    • 2009
  • TV broadcast of election returns is an index to measure a public responsibility, scientific analysis and production power in each broadcasting station. This is the reason why each broadcasting station is spending a great amount of money, mobilizing many people and using facilities. TV election returns broadcast has been advanced for decades, particularly in its production, system and presentation. And, among those, broadcast graphic and inset graphic, which are representing election-related information, have became the important components in TV broadcast of election returns because of the advancement of production technology, a variety of presentation forms, and the visual effects. In this research, I analyze the part of image composition in inset graphic of TV election returns broadcast. As a result, in making insert graphic, each broadcasting station is analyzed to be producing the accurate and clear delivery of information on the stability and reliability of a visualized form, first and foremost. It requires that we research the methodology for the accurate and reliable delivery of information, as well as various image productions with a result of the progress in production technology.

Application and Efficacy Evaluation of Nutritional Screening Tool (영양부족 환자의 조기발견을 위한 선별검사의 적용 및 효용성 평가)

  • Nam, Gung-Hwan
    • Journal of Korea Association of Health Promotion
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    • v.4 no.1
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    • pp.1-11
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    • 2006
  • "본 논문은 대한외과학회지 2006년 제70권제1호에 실렸던 논문으로 대한외과학회 편집위원회 승인을 득하고 본 협회지에 게재함. Purpose: Malnutrition has been frequently reported for patients on their admission to the hospital and it has been associated with an increase in morbidity, mortality and the length of the hospital stay. Although a number of screening tools have been developed to identify those patients at risk for malnutrition, there is no' gold standard' for defining malnutrition and the malnourished patients remain largely unrecognized. The aim of this study is to evaluate the efficacy of a nutritional screening tool for use in Dankook University Hospital. Methods Nutritional evaluation was performed for 53 patients who were admitted to the department of surgery and internal medicine between October and December 2004. The screening tool was completed by the ward nurse and the nutritional support team nurse on the same patients within24 hours of admission. The nutritional support team nurse performed the full assessment. The screening sheet included 4 questions regarding body mass index, recent unintentional weight loss, food intake and disease severity. Each answer was scored and a total of 5 was tested as the criterion fey malnutrition. The full assessment included current body weight, recent weight loss, triceps skinfold thickness, mid-arm muscle circumference, serum albumin)in and total lymphocyte count. Malnutrition was defined by 3 or more values below the reference values. The reliability of the screening tool was assessed using kappa statistic. Sensitivity, specificity and accuracy were calculated to evaluate the validity of the screening tool. The receiver operating characteristic(ROC) curve was drawn to choose a cutoff valve that maximizes sensitivity and specificity. Results' The level of agreement between the ward nurse and the NST nurse was good for BMI and food intake and moderate for weight loss and disease severity. The full assessment identified7 patients(13.2%) as malnourished. The screening sheet had a sensitivity of 86% and a specificity of 80%. According to the ROC curve, a score of 5 points provided the best validity. Conclusion The nutritional screening tool is reliable when completed by different observers and it is valid for nutritional assessment.

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THE RELATIONSHIP BETWEEN LOCUS OF CONTROL AND THE DISCOMFORT OF THE PATIENTS AT THE INITIAL STAGE OF THE ORTHODONTIC TREATMENT (교정치료 초기 환자의 통제소재와 불쾌감의 관계)

  • Kim, Young-Ho;Bae, Chang;Paik, In-Ho
    • The korean journal of orthodontics
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    • v.24 no.1 s.44
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    • pp.1-15
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    • 1994
  • This study was attempted to explore the relationship between locus of control and the discomfort of the patients at the initial stage of the orthodontic treatment. Locus of control was measured by 'Locus of Control(LOC) scale for children' and 'Orthodontic Locus of Control(OLOC) scale for children'. The discomfort was measured by 'discomfort index card' in 52 children and adolescent patients who initiate orthodontic treatment. In addition, locus of control of the patients' mothers was measured by 'Orthodontic Locus of Control(OLU) scale for parents'. The results were as follows : 1. The test-retest reliability of 'Locus of Control(LOC) scale for children' and 'Orthodontic Locus of Control(OLOC) scale' was in the moderate to high range. 2. Out of 52 patients, 47 showed moderate to severe discomfort following placement of an initial archwire. The patients showed the most severe discomfort on the first day, and most of the discomfort was manifested within the first 3 days, then decreased until the 7th day. There was no significant difference in the discomfort according to sex and age. 3. The discomfort of the patients was the highest in the morning session when a day was divided into 4 sessions, i.e., morning, afternoon, evening, and night. 4. In the score of 'Locus of Control(LOC) scale for children' and 'Orthodontic Locus of Control(OLOC) scale for children', the group of internal locus of control expressed more discomfort than the group of external locus of control. And there was no significant correlation between locus of control of the patients and that of their mothers. 5. There was no significant difference in the score of locus of control according to sex and me. However, the score of boys tended to be lower than that of girls and the score of primary school students higher than that of middle and high school students.

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The Effects of Value Perception for Natural Cosmetics by LOHAS Class on Their Purchasing Intention (로하스 계층별 천연 화장품에 대한 가치 지각이 구매 의도에 미치는 영향)

  • Lee, Kang-Yi;Kim, Soon-Sim
    • Journal of the Korea Fashion and Costume Design Association
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    • v.14 no.3
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    • pp.111-122
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    • 2012
  • This study analyzed the differences in value perception and purchasing intention for natural cosmetics by LOHAS class and investigated what influences people's value perception for natural cosmetics had on their purchasing intention. Total 450 questionnaires were distributed to adults of over 20s to 50s for the period from Dec. 1, 2011 to Dec. 14 and 410 questionnaires were used as analysis data. As for collected data, the statistical package SPSS 18.0 Version was used for factor analysis, frequency analysis, reliability test, one-way ANOVA, Chi-Square test, Scheffe-test, correlations analysis and multiple regression analysis. LOHAS class was divided into three groups (higher, middle and lower) based on LOHAS index. Through factor analysis, the value perception for natural cosmetics were divided into three factors (social value, emotional and functional value perception). The results of this study were obtained as below. First, in case of the value perception for natural cosmetics by LOHAS class, it was demonstrated that the higher LOHAS classes they were, the higher value perception for natural cosmetics (social, emotional and functional value perception) they had. Second, in case of the effects of the value perception for natural cosmetics by LOHAS class on their purchasing intention (intention to use and recommendation of usage), it was found that their value perception influenced their purchasing intention. Social value perception and functional value perception, especially social value perception largely affected the purchasing intention of all LOHAS classes, while emotional value perception didn't affected the purchasing intention.

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Parametric Study of 2.5 kW Class Propeller Type Micro Hydraulic Turbine (2.5 kW 급 프로펠러형 마이크로 수차 매개변수 연구)

  • MA, SANG-BUM;KIM, SUNG;CHOI, YOUNG-SEOK;CHA, DONG-AN;KIM, JIN-HYUK
    • Transactions of the Korean hydrogen and new energy society
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    • v.31 no.4
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    • pp.387-394
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    • 2020
  • A parametric study of a 2.5 kW class propeller type micro hydraulic turbine was performed. In order to analyze the internal flow characteristics in the hydraulic turbine, three dimensional Reynolds-averaged Navier-Stokes equations with shear stress transport turbulence model were used and the hexahedral grid system was used to construct computational domain. To secure the reliability of the numerical analysis, the grid dependency test was performed using the grid convergence index method based on the Richardson extrapolation, and the grid dependency was removed when about 1.7 million nodes were used. For the parametric study, the axial distance at shroud span (L) between the inlet guide vane and the runner, and the inlet and outlet blade angles (β1, β2) of the runner were selected as the geometric parameters. The inlet and outlet angles of the runner were defined in the 3 spans from the hub to tip, and a total of 7 geometric parameters were investigated. It was confirmed that the outlet angles of the runner had the most sensitive effect on the power and efficiency of the micro hydraulic turbine.

Credit Evaluation Model for Medical Venture Business By the Analytic Hierarchy Process (AHP를 이용한 의료기기 벤처기업의 신용평가모형)

  • Park, Cheol-Soo;Kim, Mahn-Sool
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.6 no.2
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    • pp.133-147
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    • 2011
  • This study presents the credit evaluation model for medical venture business which has been growing within the recent decade. We develop the model with two steps. At the first step, the evaluation indexes for each of the financial and non-financial factors of a firm are listed. At the second step, the weight for each index is measured by using the Analytic Hierarchy Process of Saaty(1980). The financial factors consists of 5 upper level indexes and 10 lower level indexes. The upper level indexes of the financial sector are profitability, safety, utilization, growth, and productivity. And the non-financial factors consists of 5 upper level indexes and 17 lower lever indexes. The upper level indexes in this sector are manager's competence, technical capability, marketability, business validity, and reliability. In order to get the empirical results for our model, we conduct the questionnaire survey targeting the credit assessment officers, who are practicing at the financial institutions or the credit guarantee company located within the Wonju Medical Devices Cluster.

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Analysis of the Phosphorus Contribution Rate by the Environment Fundamental Facilities Located in Upstream Basin of Paldang Lake (팔당호 상류수계에 위치한 환경기초시설의 인 기여도 분석)

  • Woo, Younggug;Park, Eunyoung;Jeon, Yangkun;Yang, Heejeong;Rim, Jaymyung
    • Journal of Korean Society on Water Environment
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    • v.26 no.6
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    • pp.1016-1027
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    • 2010
  • The phosphorus contribution rate on water quality of North and South-Han River, and Gyungan-cheon by effluents from environmental fundamental facilities located in upstream basin of Paldang Lake were analyzed. QUALKO2 model was selected for the analysis of contrubution rate, and was constructed considering the location of the main point sources and all facilities in study area. The pollutant loading rates and arrival rates for each unit-watershed in study area were calculated for model operation. For the calibration and verification of model, 2006 water quality dataset from Ministry of Environment and the effluent loadings of the environmental fundamental facilities were used. Reliability Index (RI) method was used to estimate the validity of the results of calibration and verification. The phosphorous contribution rate(%) for each environmental fundamental facility were analyzed by excepting the effluent loading of the facility. The contribution rate was analyzed for each facility, facility groups separated by each main river and each unit-watershed. The main results of analysis for each facility are as follows; (i) the phosphorous contribution of B1 facility is 50%, which is the highest phosphorous contribution rate among those of nine facilities in the North-Han River Basin; (ii) the highest phosphorous contribution is 55.6% from J facility among eight facilities in the Gyungan Stream Basin; (iii) 40% from E treatment facility is the highest among those of twenty eight facilities in the South-Han River Basin.

Validity and Reliability of the Turkish Version of the Nuss Questionnaire Modified for Adults

  • Bahadir, A. Tugba;Kuru, Pinar;Afacan, Ceyda;Ermerak, Nezih Onur;Bostanci, Korkut;Yuksel, Mustafa
    • Journal of Chest Surgery
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    • v.48 no.2
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    • pp.112-119
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    • 2015
  • Background: Pectus excavatum (PE) is the most common chest wall deformity. The Nuss Questionnaire modified for Adults (NQmA) is a disease-specific health-related quality of life assessment tool for patients with pectus deformities. The aim of this study is to adapt the NQmA into Turkish. Methods: Two hundred and sixty-five patients with PE were participated, with an age range of 14 to 29 years. All patients underwent a physical examination and had not undergone corrective surgery. The Turkish version of the NQmA was completed by patients and their parents. Results: The content validity index based on expert opinions was 91% for the patient questionnaire and 96% for the parent questionnaire. The Cronbach's alpha value for the NQmA was found to be 0.805 for the patient questionnaire and 0.800 for the parent questionnaire. Exploratory factor analysis was used to assess construct validity. Two factors explained 51.1% of the total variance in the patient questionnaire (psychosocial: 31.145%, Cronbach's alpha=0.818; physical: 19.955%, Cronbach's alpha=0.862). In the parent questionnaire, two factors explained 51.422% of the total variance (psychosocial: 26.097%, Cronbach's alpha=0.743; physical: 25.325%, Cronbach's alpha=0.827). Construct validity was confirmed by confirmatory factor analysis. Conclusion: The Turkish version of the NQmA was found to be valid and reliable for the assessment of quality of life in patients with PE.

Antecedents and Consequences of Manufacturer's Degree of Channel Concentration (제조업자의 경로집중도 선행요인과 결과요인)

  • Pyun, Hae-Soo;Lim, Chae-Un
    • Journal of Distribution Research
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    • v.11 no.1
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    • pp.69-97
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    • 2006
  • This research aimed to establish and test a empirical model for antecedents and consequences of manufacturer's degree of channel concentration in multiple channels from strategic perspective. For this purpose, I suggested new concept of channel concentration based on related literature review and developed the measurement index of channel concentration. Second, I examined and applied the transaction cost theory and market power theory to provide broad understanding of multiple channel structure and to explain it. Finally, I present the theoretical and managerial implications to the firms that build up channel strategy under multiple channel contexts on this research results. For the purpose of these goals, eight hypotheses were drawn from the previous researches. To verify these hypotheses, 248 data were collected as samples, and the data were tested by reliability test, factor analysis, and covariance structure analysis. Empirical findings strongly support that strategic management of distribution channel especially are important in multiple channels. The overall implications to researchers and practitioners are presented, and limits and further study direction were discussed as a final.

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