• Title/Summary/Keyword: statistical data analysis

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A STUDY ON THE FLEXURAL STRENGH OF HEAT-PRESSED CERAMICS ACCORDING TO SPRUE DESIGNS (주입선 설계에 따른 Heat-pressed ceramic의 파절강도에 관한 연구)

  • Oh, Sang-Chun;Dong, Jin-Keun
    • The Journal of Korean Academy of Prosthodontics
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    • v.35 no.1
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    • pp.130-143
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    • 1997
  • A heat-pressed technique(IPS-Empress, Ivoclar) has been described to construct single unit crown, inlay/onlay and veneers using a partially pre-cerammed and pre-colored glass-leucite ingot that has the greateast strength by the combination of heat-pressed procedure through the smalldiameter sprue and heat treatment procedure. The purpose of this study was to evaluate the flexure strength of a heat-pressed ceramic material(IPS-Empress) without simulated firing treatments according to pontic designs. Two groups of 9 disks(1.4mm thick, 14mm in diameter) each using two types of sprues with different diameters($({\Phi}2.8\;,{\Phi}1.8)$) and numbers were prepared. The specimens were mounted in the testing jig. The flexural strengths were determined, by means of the bi-axial bending test, by loading the center of disk to failure using a universal testing machine(Zwick 145141, Zwick, Germany) at a cross-head speed of 1.0 mm/min. The means flexural strength value of one group using a sprue with ${\Phi}2.8$ was $140.4{\pm}8.0Mpa$. That of the other group using two sprues with ${\Phi}1.8$ was $151.8{\pm}10.3Mpa$. After analysis, results showed that there was a statistical difference between groups(t=2.33m p<0.05). No clnical implications were drawn from these data because of absence of simulated firing treatment.

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A Study of the Visual Image by Pattern Making of Jeans (청바지 패턴 제작에 따른 시각적 이미지 연구)

  • Kim, Kyeong-Hee;So, Yeon-Jung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.10
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    • pp.1541-1551
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    • 2009
  • This study gives guidelines to pattern designing by supplying various images of the transformed shape of jeans with the location of the waistline and the pants silhouette. For this study, 9 kinds of sample cloths (100% cotton denim) were designed considering the laying measurement of the jeans with the location of the waistline and the pants silhouette. The images of each sample were evaluated after the measurement of the completed samples. Clothing and textiles specialists used a semantic differential scale as the evaluation method of the images. For the statistical analysis of the data, one way Anova and Duncan test were adopted using the SPSS 12.0 program. The results of this study are as follows: 1. The visual image by the location of waistline and the change of the pants silhouette is composed of 3 factors (attraction, fashion and comfort factors) of which the attraction factor is the most important factor. 2. The visual image is positive when the location of the waistline is in the low waist position. It is attractive, fashionable, and comfortable. The visual image is negative when the location of the waistline is in the position of the natural waist. 3. The visual image is attractive when the pants silhouette is a boot-cut and fashionable when the pants silhouette are skinny. The straight-cut is comfortable but the visual image is negative. 4. There is no correlation between visual image by the location of the waistline and the change of the pants silhouette.

Analysis of Consumer Characteristics of Department stores in Pusan (부산지역 백화점의 소비자 특성 분석)

  • Lee, Kyoung-Hee;Ahn, So-Hyun;Kim, Suk-Ju
    • Journal of Global Scholars of Marketing Science
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    • v.8
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    • pp.403-427
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    • 2001
  • The purpose of this study is to deeply understand consumer characteristics of department stores in pusan to cope with intensive competition of distribution channels. To complete this purpose, literature study was done through secondary data, than statistical research was conducted from 23th April to 17th May, 2001, through interview with 600 consumers of Hyundai department store in Pusan. Consumers of department stores earn more money than average, and they purchase fashion goods rather than necessities at department stores. Thus to deal with discount store, department stores need to lay stress on prestigious image and fashion goods. And to deal with other competitive department stores, they have to develope more distinctive and superior marketing mix than counter part. These days distribution situations of pusan are changed owing to prohibition of shuttle bus, opening of second section of subway line 2, and opening of Lotte department store at Dongrae. Thus departments stores also have to investigate the change of shopping behavior of consumers.

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Equity in the Delivery of Health care in the Republic of Korea (의료이용의 형평성에 관한 실증적 연구 -공.교 의료보험 피부양자를 대상으로-)

  • 명지영;문옥륜
    • Health Policy and Management
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    • v.5 no.2
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    • pp.155-172
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    • 1995
  • This study is an empirical analysis on the equity in the delivery of heatlh care under the Korean Medical Insurance Corporation System. The purposes of this study are to find out effects of income on the health care utiliztion and measure the income-related inequity in the distribution of health care. This study was carried out based on the fact that the health insurance program has been organized to achieve the equity objective, "equal treatment for equal needs". Of 41, 828 insured persons who had been diagnosed in the 1993 Health Screening Test and utilifzation data from 1, January 1993 through 31, December 1993 were derived from the Benefit Managment File. Inequity was measured by means of I) share approach, ii) standardization concentration curve approach, iii) inequity index, iv) test for inequity. The major findings were as follows : 1. The expenditure shares of the top two quintile groups exceeded their morbidity shares, whereas the opposite was true of the bottom three quintile groups, Which showed a positive HI$_{LG}$ inequity index, suggesting the presence of some inequity favoring the rich group. 2. Compared with other residential areas, the rural area showed the highest positive HI$_{LG}$ irrespective of need indicatior applied. 3. Standardized expenditure concentration indices adjusted by age, gender and need structure were also found to be positive, and therefore still indicated that there has been inequity favoring the rich after the standardization. 4. The Loglikelihood Ratio (LR) test for the statistical significance of income-related inequity of medical care utilization was carried out using the logistic regression model. The resulting loglikelihood ratio test statistic value was 176, which did exceed the 0.5 percent critical value of the chi-square distribution with 28 degrees of freedom, which is 50.993. Therefore, the null hypothesis of no income-related inequity of medical care utilization was rejected at the 99.5 percent confidence level. 5. The Regression based F-test has been carried out for analyzing the income-related inequity of medical expenditure in terms of age, gender, morbidity indicators as explanary variables. The hypothesis of the absence of income-relate inequity was rejected for all need indicators at the 95% confidence level.nce level.

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An Analysis of the Bibliographic Citation Behaviors of Other Academic Areas: Case Study in Academic Journals of Korean Records and Archives Management (타 학문 분야 간의 문헌 인용 행태 분석 - 기록관리학 분야 학술지를 중심으로 -)

  • No, Hyeon-A;Chang, Woo-Kwon
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.24 no.4
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    • pp.363-383
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    • 2013
  • This study was to investigate bibliography in other academic areas cited by records and archives management researchers, identify academic correlations between other academic areas and their independency, and present basic data for further research on this area. Also, this study conducts the following analyses. This study analysed statistical values such as frequency and percentage of 2,224 of 6,811 bibliographies cited by 383 articles which were issued until 2011 according to themes, periods of citation, age of citers and types of bibliography, targeting 'Archival Science Studies' by Korea Society of Archival Studies and 'Journal of Records Management and Archives Society of Korea' by Records Management and Archives Society of Korea.

A convergence study on middle-aged women's beauty interest, medical skin care visit intention, experience satisfaction, and psychological happiness (중년여성의 뷰티관심도와 메디컬스킨케어 방문의도, 경험만족도, 심리적 행복감에 관한 융합연구)

  • Lee, Hee-Young;Kim, Eun-Sook
    • Journal of the Korea Convergence Society
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    • v.11 no.8
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    • pp.309-316
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    • 2020
  • The purpose of the study is to know that the medical skin care improves the quality of middle-aged women's life and happiness improves their confidence by analyzing the medical skin care visit intention, experience satisfaction, and happiness according to their beauty interest. This study analyzed 242 copies of the data through the SPSS v.22 Statistical Package Program. According to the analysis, middle-aged women's interest in beauty is important to experience satisfaction(F=201.821, p<.001). Experience satisfaction is statistically significant to happiness factors(F=384.625, p<.001). Based on this study, differentiated marketing that identifies the intention to visit is needed. Also, the higher the satisfaction of medical skin care experience, the more helpful it is to lead a positive life by improving their confidence.

A Study on User Satisfaction by Perceived Performance of Ecological Learning Center (생태학습장 이용객의 지각된 성과에 의한 만족도 연구)

  • Park, Chung-In;Kim, Jong-Hae
    • Journal of Environmental Science International
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    • v.19 no.8
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    • pp.1057-1066
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    • 2010
  • An ecological learning center is defined as a place which can establish the correct relationship between human and environment. Human can learn ecosystem and importance of environment throughout observation of nature and participation in program of ecological learning center. The most important aspects of ecological learning center planning are to reflect on user's demand and preservation of ecosystem. The prime goals of this study is to analyze user's characteristics in the Young Wheol Mulmurigol Ecological Learning Center. The second goal of this study is to find out the satisfaction model based on user's perceived performance of each program and facility in the center. For this study, questionnaire survey with 204 individuals was completed. The data from the questionnaire were analyzed statistical method by SPSS. There are several significant results from the study as following First, this ecological learning center as a newly operating facility is used not for educational purpose but for resting and relaxation purpose. It is due to that the most of users in this center are package tourists with historic scenes. Second, user's perceived performance evaluated by 23 attributions of programs and facilities, and these attributions could be classified by 5 factors such as environment friendly design, educational function, preservation of environment, provision of various bio-top and provision of resting area. Third, the user satisfaction model indicates that user satisfaction is depended on various factors such as preservation of environment, provision of various bio-top, provision of resting area. Among these factor affecting the satisfaction, provision of various bio-top is the most influence on user satisfaction.

A Study of interior design process and 6sigma application - Focused on display space design improvement in department store - (실내디자인 프로세스와 6시그마 적용 사례 연구 - 백화점내 연출 공간 디자인 개선을 중심으로 -)

  • Yeom, Dae-Keon
    • Korean Institute of Interior Design Journal
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    • v.16 no.2 s.61
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    • pp.322-330
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    • 2007
  • Because 6sigma is doing innovative success In management whole, estimate that can exert direct effect in interior Design management. Therefore, this study did by purpose that 6sigma that is scientific method that do customers satisfaction by ultimate purpose acts as basic study that can heighten practical use Possibility and result of interior Design management and value by interior design standardization process. Need to use marketing data that is scientific design component at schematic design step for successful interior design that can improve result. Hereupon, this study is doing to big dimension that utilizes 6sigma and makes standard process of only Interior Design, and did to dimension that present study phase verifies if '6sigma' is practical use possibility by intoner design process. Did by method that verification method of 6sigma practical use possibility analyzes "Information transmission efficiency improvement of department store display space" 6sigma project example. When see that example project is analyzed on Improvement constituent that "Design improvement" out of Vital few Xs of statistical analysis item must heighten the customers satisfaction rate conclusively, target process might be established because design becomes center of gravity if did design improvement very first time. Finally, possibility that 6sigma can utilize in process of interior design is verified, and it is scientific methodology that can utilize to all business members that there are not any special category of business even if is in practical use. Such scientific 6sigma method need persistent study that make standard process analyzing a lot of problems that is expected to be beaconed and happens substantially in here after to management development of interior design.

A Study on the Evaluation of the Cognition of the Circulation Efficiency in Geriatric Hospital (노인요양병원 진료부의 경로인지 효율성 평가에 관한 연구)

  • Bae, Sun-mi;Kim, Suk-Tae
    • Korean Institute of Interior Design Journal
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    • v.25 no.6
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    • pp.40-51
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    • 2016
  • The aim of this study is to quantitatively deduce the circulation efficiency and space arrangements of the outpatient department in geriatric hospitals in terms of spatial structure and to find a methodology that could promote the improvement of accessibility and spatial cognition while using the facilities. All space units of the selected twelve geriatric hospitals were located on the first floor. The study adopted the psychological distance concept of space syntax to the unitized spaces, and presented a set of indices, such as TD, PN, RF, PNT and TRF. These indices were calculated according to the standard clinical use procedures. The study evaluated the effectiveness of circulation. The analysis of circulation was based on the four major geriatric illnesses that were selected in this study. The study established the standard clinical use procedure with consideration of the medical treatment, examinations and space units of outpatient departments. The results are as follows: 1) Based on the statistical data, four major geriatric illnesses are examined, and space requirement and standard procedures are established. Development indicators are applied in order to quantitatively deduce the efficiency of spatial cognition. 2) The percentage of the risk of cognitive decline(TRF) has an inversely proportional correlation to the circulation efficiency(PNT) at a certain point. TRF is more influenced by the clinical use procedure than the scale. 3) The arrangement of the waiting space and types of corridor greatly affect the percentage of the risk of cognitive decline. 4) Vulnerable facilities are selected on the basis of the evaluation, and two alternatives that could promote the circulation efficiency are presented. The result of the reanalysis showed that cognitive efficiency had much improved compared to the existing facilities.

Value of Ultrasonography in the Diagnosis of Carpal Tunnel Syndrome : Correlation with Electrophysiological Abnormalities and Clinical Severity

  • Kim, Min-Kyu;Jeon, Hong-Jun;Park, Se-Hyuck;Park, Dong-Sik;Nam, Hee-Seung
    • Journal of Korean Neurosurgical Society
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    • v.55 no.2
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    • pp.78-82
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    • 2014
  • Objective : To investigate a diagnostic value of ultrasonography in carpal tunnel syndrome (CTS) patients and to evaluate a correlation of sonographic measurements with the degree of electrodiagnostic abnormalities and clinical severity. Methods : Two-hundred-forty-six symptomatic hands in 135 patients and 30 asymptomatic hands in 19 healthy individuals as control group were included. In ultrasonographic study, we measured the cross-sectional area (CSA) and flattening ratio (FR) of the median nerve at the pisiform as well as palmar bowing (PB) of the flexor retinaculum. Sensitivity and specificity of ultrasonographic measurements were evaluated and ultrasonographic data from the symptomatic and control hands were compared to the grade of electrodiagnostic and clinical severity. Results : The mean CSA was $13.7{\pm}4.2mm^2$ in symptomatic hands and $7.9{\pm}1.3mm^2$ in asymptomatic hands. The mean FR was $4.2{\pm}1.0$ in symptomatic hands and $3.4{\pm}0.4$ in asymptomatic hands. The mean PB was $3.5{\pm}0.5$ mm in symptomatic hands and $2.6{\pm}0.3$ mm in asymptomatic hands. Statistical analysis showed differences of the mean CSA, FR and PB between groups were significant. A cut-off value of $10mm^2$ for the mean CSA was found to be the upper limit for normal value. Both the mean CSA and PB are correlated with the grade of electrophysiological abnormalities and clinical severity, respectively. Conclusion : Ultrasographic measurement of the CSA and PB is helpful to diagnose CTS as a non-invasive and an alternative modality for the evaluation of CTS. In addition, ultrasonography also provides a reliable correlation with the grade of electrodiagnostic abnormalities and clinical severity.