• Journal of Korean society of Dental Hygiene
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• v.13 no.3
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• pp.377-385
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• 2013

Objectives : The objective of this study is to determine the associations between dietary behaviour and subjective measurements of dental caries and periodontal disease in a cohort of nursing home staff. Methods : A self-reported survey was carried out in 280 nursing home staff in Jeollabukdo Province, Korea. The collected data were analyzed using SPSS Version 19.0 program. Multiple regression analysis was conducted to examine the effects of dietary behavior and food intake on subjective measurements of the two serious dental diseases. Results : The irregular meal tended to increase dietary imbalance and periodontal diseases in the nursing staff. For example, it had influences on the imbalance of sugar, vegetable, and safood intake. Conclusions : It is important to take regular meal because irregular eating behavior tended to increase dietary imbalance and periodontal diseases in the nursing staff.

• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.315-320
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• 2019

In the era of the fourth industrial revolution, the education industry is expected to grow further. It is expected that growth rate of future education using VR/AR technology will be very high. Realistic contents based on VR/AR technology provides high realism and experience through characteristics of immersion, interaction and intelligence. This paper tries to analyze the trends of realistic contents technology at home and abroad, and to come up with measures that can be applied to future educational content through case analysis of realistic contents development.

• Journal of the Korean Society of Clothing and Textiles
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• v.46 no.3
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• pp.375-389
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• 2022

3D printing has been considered a key technology, leading the fourth industrial revolution. However, 3D printed textile still has a lot of limitations to overcome before it can be adopted as a clothing material in terms of design, flexibility and dyeability. This study aims to provide modeling design for imparting the flexibility and post-dyeing process for 3D printed textiles. The modeling types were designed to test the flexibility of 3D printed textiles. The post-dyeing process was evaluated through dye absorption depending on the resin and modeling types, respectively. The results were as follows: two types of modeling (Modeling A and B) were designed with a ring structure to test the flexibility of the 3D printed textiles. The 3D printed textiles with ring-based structure Modeling A had flexibility regardless of the hardness of resin types. In the dyeability test, softening resin (S-Resin) and hardening resin (H-Resin) were found to have good dyeability with acid dye and direct dye, respectively. The condition of S-Resin with acid dye and H-Resin with direct dye was controlled by dye absorption rate.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.259-268
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• 2014

The purpose of this study is to investigate correlation between experience of visiting the dentist and oral symptoms with 10,701 high school seniors in the research data of the 8th juvenile online health behavior carried out in 2012. The results of this research showed that the lower academic grades, the more tooth crack they experienced, and the lower economic conditions, the more toothache they tended to experience. The main reasons they visited the dentist were because their teeth ached, tingled or throbbed with pain. Scores of oral symptoms, sex, economic conditions and the number of experience of visiting the dentist were found to have a significant correlation. In order to improve high school students' dental health continually, we need to install the school dental health room and need to systemize continuous dental health care system for high school students, along with development of various school dental health education programs, by vitalizing prevention based school dental health education.

• Journal of Chest Surgery
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• v.41 no.1
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• pp.141-144
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• 2008

Low grade fibromyxoid sarcoma (LGFM) is a rare, deep soft-tissue malignant tumor. Although its histologic features are benign, the clinical course is malignant. The usual tumor locations are the lower extremity and chest wall. LGFM originating from the visceral pleura is extremely rare. We report here on a 37 year old man with a LGFM of the visceral pleura. Thirty three months after surgery, the patient is alive without any sign of local recurrence or distant metastasis.

• Resources Recycling
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• v.19 no.4
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• pp.13-18
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• 2010

Effort of reducing wastes and their recycling is increasing in worldwide. Especially, extreme care for alkali recycling is required because of its environmental pollution and its corrosive characteristics. In order to manage alkali wastes effectively, it is necessary to make quality standards for recycling products from the alkali wastes because there are no quality specifications yet. In this study, we selected several recycling candidates from the alkali wastes based on the analysis of the most recent data of the various industrial sites. As a result, the recycling candidates from the alkali wastes are sodium hydroxide, aluminum sulfate, poly aluminum chloride. It is believed that the proper management system for waste products is required in governmental point of view and it propagates positively for resolving various environmental issues.

• Journal of Korean society of Dental Hygiene
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• v.14 no.4
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• pp.585-591
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• 2014

Objectives : The purpose of this study was to investigate of the color change, tooth surface and intra-pulpal temperature of tooth bleaching by light activation Methods : Forty-eight extracted bovine teeth were immersed into a tea solution for 24 hours. The specimens were randomly divided into four groups(n=15):(G1) 15% HP + without light activation, (G2) 15% HP + light activation, (G3) 25% HP + without light activation, (G4) 25% HP + light activation. All specimens were bleached for 15 minutes three times. The spectrophotometer (CM-2600d, Konica Minolta, Osaka, Japan) was used including before bleaching, immediately after bleaching, 1 week, 1 and 3 months after the end of bleaching. The temperature rise were measured in the pulpal chamber and tooth surface with a digital thermocouple thermometer(Termopar Digital Multimeter, Tektronix DMM916, USA). Between the tested time points, the specimens were stored in distilled water. The data were analyzed by ANOVA, t-test and Tukey's post hoc test set at 0.05. Results : There was no significant color change by the use of light after the bleaching treatment(p>0.05). The dental bleaching treatments of teeth with 15% HP and 25% HP did not seem to be more effective when light source was used. There was no difference in color stability between groups within three month(p>0.05). There was an increase in tooth surface and pulp temperature, but it was not sufficient to cause damage to the pulp. Conclusions :The use of light activation has no obvious effective impact on the tooth bleaching effect.

• Journal of Industrial Convergence
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• v.18 no.1
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• pp.1-15
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• 2020

This study aims at examining the effect of strategic orientation on IT startup performance and analyzing the mediating effect of network in the relationship. The study was conducted on the three dimensions that make up strategic orientation: technological orientation, customer orientation, competitive orientation on firm performance, and the understanding of the role of the network. Empirical research on 94 IT startups as residents of startup support institutions was conducted. The suitability of the research model was evaluated with PLS-SEM. As a result of the empirical analysis, customer orientation and competitive orientation was verified to have a positive effect on network, while Technological orientation was confirmed to have no positive effect. and network mediated the relationship between customer orientation and competitive orientation, while Technological orientation was confirmed to have no positive effect. The results of this study provide startup practitioners with strategic direction and the importance of network establishment and utilization.

• Journal of Korean Philosophical Society
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• v.139
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• pp.105-131
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• 2016

The notion of responsibility, which has now gained a firm foothold as one of the fundamental notions of philosophy and its neighboring disciplines, became the subject of philosophical enquiry only in the 19th century by Kierkegaard, who delved into the morality of critical self-awareness in ethical responsibility of the absolute self; and Nietzsche, who put emphasis on the responsibility of the sovereign self in coping with the problems of the future. Nietzsche is the first philosopher who took issue with the diminishment (Verkleinerung) of humanity-what he called human being's greatest disease-that swept Europe at that time. Concerns about Europe's future were the key movens of Nietzsche's philosophy revolving around the advent of nihilism in Europe and its solutions. He prepared alternative solutions in deep awareness that the ethics of good and evil firmly rooted in the traditional metaphysics and Christianity would not even catch the depth and breadth of the big problem of globalization brought about by modernism, let alone solve it. Nietzsche devoted his whole life to disseminating the knowledge that the future of humankind depends on removing these old ethics. This article traces Nietzsche's reflections on the ethical event of responsibility and provides an overview of the purview and scope contained in the meaning covered by the notion of responsibility in his philosophy beyond common norms and values.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.9
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• pp.3341-3346
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• 2010

Dentifrices comtaining SLS of 2.2% and 0.0% were applied to 60 subjects for 4 weeks in this study. Dentifrice is used for salivary and oral bacteria amount change according to its SLS contents in toothpaste. The results were as follows. Anaysis of LSL contents befor and after the after experiment in salivary and bacterial count oral cavity didn't show significant difference in time interval. There was no correlation between salivary flow rate and bacterial count in the oral cavity according to content of SLS. Dentifrice of 2.2% content satisfied the subjects much more than that of 0.0% content(p<0.001).