• The Journal of Korean Academy of Prosthodontics
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• v.50 no.2
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• pp.85-91
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• 2012

Purpose: The object of this study was to determine if the low-priced alloy and metal UCLA abutment could be available for manufacturing bar-retained framework of implant prosthesis. Materials and methods: Bar structure was classified into 4 groups, The specimen of group 1 and 2 were based on casting high noble metal alloys and noble metal alloys with gold UCLA abutment. The specimen of group 3 and 4 were based on casting noble metal alloys and base metal alloys with metal UCLA abutment. Cast bar structure was installed in an acrylic resin model and only the screw on the hexed abutment side was tightened to 20 Ncm. On the opposite side, vertical discrepancy was measured with stereo microscope from front, back, and lateral side of the implant-abutment interface. One-way ANOVA was performed to analyze the marginal fit discrepancy. Results: One-way ANOVA test showed significant differences among all groups ($P$<.05) except for Group 1 and 3. Among them, difference between Group 1 and 2 was noticeable. Measured vertical discrepancies were all below $70{\mu}m$ except to Group 2. Conclusion: Base metal alloy and metal UCLA abutment could be used as an alternative to high-priced gold alloy for implant bar-retained framework.

• Journal of Navigation and Port Research
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• v.44 no.3
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• pp.195-202
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• 2020

The production of larger of ships is a survival strategy for global shipping companies to pursue the economics of scale. According to this strategy, to respond to this situation, many containers are loading/unloading simultaneously in the hub port. Additionally, the container terminals are promoting the introduction of automation to expand the terminal facilities and increase efficiency/productivity of the container yards. European ports have introduced automation to address rising labor costs and shortages of labor. Recently, the construction of fully automated container terminals is increasing in the United States and China to resolve problems such as the slow growth of the global economy, the emergence of large ships, air pollution, and safety accidents. Domestic ports are at an early stage compared to the world's advanced container terminals, and countermeasures are being prepared to respond to the changing ports. However, research on the recognition difference analysis that examines the opinions of stakeholders is insufficient. As a result of analyzing the recognition among the groups, it was found that container terminal operators reduced labor costs, improved shipping services for shipping companies, prevented safety accidents for port union labor, and increased service for port authority and government agencies. Thus, to closely examine the perception among the groups, one-way ANOVA was performed, and then the implications were deduced as the basic data for the smooth introduction of automation.

• The Korean Journal of Applied Statistics
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• v.33 no.6
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• pp.697-712
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• 2020

New infectious diseases have broken out repeatedly across the world over the last 20 years; COVID-19 is causing drastic changes and damage to daily lives. Furthermore, as there is no denying that new epidemics will appear in the future, there is a continuous need to develop measures aimed towards responding to economic damage. Against this backdrop, the living population is an important indicator that shows changes in citizens' life patterns. This study analyzes time-based and socio-environmental characteristics by detecting and classifying changes in everyday life caused by COVID-19 from the perspective of the floating population. k-shape Clustering is used to classify living population data of each of the 424 dong's in Seoul measured by the hour; then by applying intervention analysis and One-way ANOVA, each cluster's characteristics and aspects of change in the living population occurring in the aftermath of COVID-19 are scrutinized. In conclusion, this study confirms each cluster's obvious characteristics in changes of population flows before and after the confirmation of coronavirus patients and distinguishes groups that reacted sensitively to the intervention times on the basis of COVID-related incidents from those that did not.

• Journal of Sasang Constitutional Medicine
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• v.25 no.4
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• pp.330-342
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• 2013

Objectives This study was to examine the differences on alexithymia, rumination, depression and somatic symptoms by each Sasang constitution, and aimed at combining the psychological construct with Korean medical treatment. Methods One hundred eighty men and women aged from 20 to 69 who reside in Geoje-si were selected, and data from 173 people consisting of the three constitutions-Soyangin(39), Taeeumin(83), and Soeumin(51), excepted the minority sample of Taeyangin(7 people)-were analyzed. Collected data were analyzed and tested by IBM SPSS Statistics 20: frequency analysis for demographic data; t-test for gender differences; one-way ANOVA for differences among three constitutions; and Pearson correlation analysis for the correlation between variables. Results The result of t-test taken for the gender differences between variables was not significant. According to the result of one-way ANOVA conducted by different Sasang constitutions, no variables showed a significant result except that of alexithymia. The correlation analysis showed that the alexithymia had positive correlation with rumination, depression, and somatic symptoms. Rumination was in positive correlation with depression and somatic symptoms. Especially, depression had high positive correlation with somatization symptoms. Among the variables analyzed by each constitution, only the survey result of the alexithymia was significant. Conclusions Given that each constitution showed different levels of the alexithymia, it can be concluded that therapeutic intervention in the treatment for the Taeeumin who shows a high level of alexithymia is needed to improve their emotional recognition and expression. In this context, application of program which focus on the emotional ability such as emotion coaching to the Korean medical treatment is expected to improve alexithymia, depression, and somatic symptoms.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.5 s.164
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• pp.742-752
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• 2007

The purpose of this study is the image of clothing according to the change of the dots' size was analyzed and its influence on the formation of the image of polka dots clothing was investigated. White waterdrop patterns were designed on the 12 kinds of black texture using Photoshop and CAD program in regular arrangement of diamond figure, composed of white waterdrop(0.5cm, 1.0cm, 1.5cm and 2cm in diameter) and interval(diameter : interval-1 : 1, 1 : 2, 1 : 4). Applying above specification, the photograph stimulus of 12 kinds of X-line one-piece dress with wide square neckline and without sleeve or detailed ornament was presented on a screen in the same size as when putting it on. The image of polka dots clothes was investigated by questionnaire survey. The object of the study was 320 females aged between 16 and 29. Factor analysis, one-way ANOVA, $Scheff\acute{e}$ verification and two-way ANOVA using SPSS 10.0 were carried out for data analysis. Followings are the results: 1) The image of polka dots clothing consists of 4 factors as aesthetics, brevity, dynamism and lightweight. 2) The size of the dot has a great influence on the formation of the image of polka dots clothing. 3) The evaluations of the image of polka dots clothing were different depending on the age and physical image, the personal characteristics of the object of investigation.

• The korean journal of orthodontics
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• v.45 no.1
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• pp.29-37
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• 2015

Objective: The coefficients of friction (COFs) of aesthetic ceramic and stainless steel brackets used in conjunction with stainless steel archwires were investigated using a modified linear tribometer and special computer software, and the effects of the bracket slot size (0.018 inches [in] or 0.022 in) and materials (ceramic or metal) on the COF were determined. Methods: Four types of ceramic (one with a stainless steel slot) and one conventional stainless steel bracket were tested with two types of archwire sizes: a $0.017{\times}0.025$-in wire in the 0.018-in slots and a $0.019{\times}0.025$-in wire in the 0.022-in slot brackets. For pairwise comparisons between the 0.018-in and 0.022-in slot sizes in the same bracket, an independent sample t-test was used. One-way and two-way analysis of variance (ANOVA) and Tukey's post-hoc test at the 95% confidence level (${\alpha}$ = 0.05) were also used for statistical analyses. Results: There were significant differences between the 0.022-in and 0.018-in slot sizes for the same brand of bracket. ANOVA also showed that both slot size and bracket slot material had significant effects on COF values (p < 0.001). The ceramic bracket with a 0.022-in stainless steel slot showed the lowest mean COF (${\mu}$ = 0.18), followed by the conventional stainless steel bracket with a 0.022-in slot (${\mu}$ = 0.21). The monocrystalline alumina ceramic bracket with a 0.018-in slot had the highest COF (${\mu}$ = 0.85). Conclusions: Brackets with stainless steel slots exhibit lower COFs than ceramic slot brackets. All brackets show lower COFs as the slot size increases.

• Journal of Convergence for Information Technology
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• v.10 no.11
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• pp.232-239
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• 2020

The purpose of this study was to identify the factors affecting the motivation for blood donation participation of university students. The subjects of this study were 200 university students in one area, and a self-report questionnaire was used for data collection. The data analysis used frequency, percentage, mean, standard deviation, Independent T-test, One-way ANOVA, Pearson Correlation Coefficient, and Multiple Regression Analysis. As a result of the study, the factors influencing the subjects' motivation to participate in blood donation were significant in the order of attitude toward blood donation, future blood donation plan, perceived health status, altruism, and number of blood donation experiences. The results of this study can be used as basic data for the development of educational programs to increase the motivation for blood donation participation of university students. It also suggests that there is a need to develop strategies that can increase university students' attitudes toward blood donation, altruism, and health status.

• Journal of Digital Convergence
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• v.16 no.10
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• pp.261-270
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• 2018

The purpose of this study is to investigate the effect of work-family conflict and social support on retention intention in married female nurses. Participants were nurses working in 5 general hospitals in C city and data were collected from September 1 to 15, 2017. Data were analyzed by t-test, one-way ANOVA, Pearson's correlation, multiple regression analysis using SPSS Win 23.0. Factors influencing retention intention were identified as following; time-based conflict, more than one child, charge nurse, support of a co-workers, managers' support, with 37.3% explanatory power. This study shows that time-based conflict has negative effect on retention intention, while support of co-workers and managers have positive effect. This result may be useful in developing new strategies for enhancing retention intention. Further research is needed to identify other factors affecting the retention intention of married female nurses.

• Fashion & Textile Research Journal
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• v.9 no.3
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• pp.278-285
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• 2007

The purpose of this study is the image of clothing according to the change of the dots' interval was analyzed and its influence on the formation of the image of polka dots clothing was investigated. White waterdrop patterns were designed on the 12 kinds of black texture using Photoshop and CAD program in regular arrangement of diamond figure, composed of white waterdrop(0.5 cm, 1.0 cm, 1.5 cm and 2 cm in diameter) and interval(diameter : interval - 1 : 1, 1 : 2, 1 : 4). Applying above specification, the photograph stimulus of 12 kinds of X-line one-piece dress with wide square neckline and without sleeve or detailed ornament was presented on a screen in the same size as when putting it on. The image of polka dots clothes was investigated by questionnaire survey. The object of the study was 320 females aged between 16 and 29. Factor analysis, one-way ANOVA, Scheff$\acute{e}$ verication and two-way ANOVA using SPSS 10.0 were carried out for data analysis. The research finding are as follows. First, the image of polka dots clothing consists of 4 factors as aesthetics, brevity, dynamism and lightweight. Secondly, the interval of the dot has a great influence on the formation of the image of polka dots clothing. Lastly, the evaluations of the image of polka dots clothing were different depending on the age and physical image, the personal characteristics of the object of investigation.

• Journal of Convergence for Information Technology
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• v.7 no.4
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• pp.1-9
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• 2017

The purpose of this study, is to identify the factors affecting reuse intention, determine the accurate demand of suppliers and consumers for qualitative dental care service, and identify the cyclic factors positively affecting one another. The data were analyzed by SPSSWIN 18.0, t-test and one way ANOVA, Pearson correlation and Stepwise multiple regression. Human service quality was significantly positively correlated with service value (r=0.609) and reuse intention (r=0.627) and service value was significantly positively correlated with reuse intention (r=0.645). The higher service value, the higher human service quality, the lower medical service discrimination, the higher level of reuse intention, which accounted for 56.9%. Therefore, it is necessary to make optimal maintenance of the system from the broad viewpoint of dental care in general and apply it in practice by developing good methods steadily.