• The korean journal of orthodontics
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• v.51 no.5
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• pp.313-320
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• 2021

Objective: The purpose of this study was to evaluate the effects of chewing gum and low-level laser therapy in alleviating orthodontic pain induced by the initial archwire. Methods: Patients with 3-6 mm maxillary crowding who planned to receive non-extraction orthodontic treatment were recruited for the study. Sixty-three participants (33 females and 30 males) were randomly allocated into three groups: laser, chewing gum, and control. In the laser group, a gallium aluminum arsenide (GaAlAs) diode laser with a wavelength of 820 nm was used to apply a single dose immediately after orthodontic treatment began. In the chewing gum group, sugar-free gum was chewed three times for 20 minutes-immediately after starting treatment, and at the twenty-fourth and forty-eighth hours of treatment. Pain perception was measured using a visual analog scale at the second, sixth, and twenty-fourth hours, and on the second, third, and seventh days. Results: There were no statistically significant differences between the groups at any measured time point (p > 0.05). The highest pain scores were detected at the twenty-fourth hour of treatment in all groups. Conclusions: Within the limitations of the study, we could not detect whether low-level laser therapy and chewing gum had any clinically significant effect on orthodontic pain. Different results may be obtained with a higher number of participants or using lasers with different wavelengths and specifications. Although the study had a sufficient number of participants according to statistical analysis, higher number of participants could have provided more definitive outcomes.

• Cross-Cultural Studies
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• v.46
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• pp.465-495
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• 2017

The purpose of this study is to verify whether the concept of time conveys meanings similar to nonverbal communicative elements in foreign language education. This study surveys cultural traits of time from the French cultural education perspective. Anthropologist Edward T. Hall points out that each cultural community has developed a different perception of time and experience, and that time conveys the meaningful message nonverbally similar to the nonverbal elements such as space, gesture, eye movement, and facial expression. I investigated the time experiences of a drinking party in France and in Korea, from a cultural relativistic point of view. The subject of a drinking party was chosen on the ground that a drinking party is highly related to most people's daily lives and it also indicates how they have a relationship with others. I sought a new direction in foreign language cultural education by analyzing how cultural differences between the two communities, especially the relationships between individuals and organisations, ways to separate leisure and labor, and the nonverbal elements, are presented in the two drinking parties.

• Journal of the Korean Dietetic Association
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• v.25 no.3
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• pp.165-177
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• 2019

This study examined the perception and behavior of fast food restaurant customers toward ordering kiosk nutrition information. Specifically, the influence of nutrition information transparency and information quality on behavioral intention and revisit intention were identified. In addition, the difference in the nutrition information transparency and information quality was analyzed according to the health consciousness of the customers. The study employed a self-administered survey that was distributed both online and offline from November 8~22, 2018. The sample of the study was customers who had experienced ordering from the kiosk in a fast food restaurant in the six months prior to taking the survey. A total of 250 (98.0%) respondents completed the survey, which was used for data analysis. As a result, there was a significant relation between transparency and nutrition information quality (P<0.001). The higher the visibility and inferability of the nutrition information, the better the nutrition information quality. Nutrition information quality has a significant impact on the levels of customer satisfaction and revisit intention (P<0.001). For the differences in the transparency and nutrition information quality by health consciousness of customers, the results indicated that groups with high health consciousness (3.74 or higher) perceived a higher transparency and nutritional information quality than those with a lower health consciousness. These findings can form the basis of a strategy in developing nutrition information of ordering kiosks in restaurants. In addition, it can be applied to academia and industry.

• Journal of Internet Computing and Services
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• v.20 no.3
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• pp.101-109
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• 2019

Based on the electricity sales and public consumption psychology during the online shopping festival, the purpose of this study is to investigate the factors that influence the reusing intention of the online shopping festival consumers. This research is focusing on The Theory of Reasoned Action(TRA) and The Technology Acceptance Model(TAM) to understand online shopping festival consumers' decision making process. The sampling is Chinese from 20s to 50s, who had participated in the online shopping festival.Findings suggests that first, the positive attitude of online shopping festival and subjective norms showed positive effects on online shopping festival consumers' reusing intention. Second, perceived usefulness, perceived ease and perceived enjoyment had statistically significant effects on online shopping festival consumers' reusing intention. Third, according to perceived risk perception of online shopping festivals, there were differences in factors affected the online shopping festival's reusing intention. In particular, the perceived ease of people who perceived risk higher, and the perceived usefulness of people who perceived risk lower had greatest impacts on reusing intention. Based on these findings, the implications and limitations of this study were discussed and suggestions for subsequent studies.

• Korean Journal of Construction Engineering and Management
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• v.20 no.4
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• pp.77-85
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• 2019

Death accidents rates in construction industry is increasing high recently. Such a phenomenon may be seen as a limitation of current management methods and legal actions. Therefore, purpose of this study was to find priorities of construction Workers safety activities related to motivational factors and to check perception differences between construction workers and construction engineers and to find a main factor of workers attitude, behavioral causes and find a way to reduce the accidents causing in construction industry. For the research, we did a survey with construction workers and construction engineers asking about 3 top motivators 'economic, environmental, safety, cultural, and administrative factors' in 21 details. According to the survey, the biggest difference between construction workers and construction engineers was about a working environment and safety cultural factors. Also, workers and engineers were both positive about safety incentive. Based on the results of this study, safety accidents will be reduced through worker-oriented management.

• The Research Journal of the Costume Culture
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• v.27 no.2
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• pp.81-97
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• 2019

This study investigated how the image congruity of social commerce and fashion brand types affects purchase intention and how trust and price sensitivity moderate this relationship. National brands, private brands, and non-brands were used as brand types in the present study. The online survey method was used to gather the data, and 232 data samples were analyzed. The results of the research were as follows. Consumers perceived greater image congruity between social commerce and non-brands, followed by private brands and national brands. The significant perception differences were examined by comparing the mean values. There was a significant positive effect of image congruity of social commerce and non-brands on purchase intention. However, insignificant effects were found for image congruity between social commerce and private brands and national brands. In addition, trust and price sensitivity positively predicted social commerce purchase intention. A significant moderating effect of trust was found on the relationship between purchase intention and image congruity of social commerce and non-brands. A moderating effect of price sensitivity was found on the relationship between purchase intention and image congruity of social commerce and private brands. The findings of the present study offer valuable insights into social commerce concerning implementing diverse fashion brands as well as academic and practical implications.

• Journal of Digital Convergence
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• v.17 no.3
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• pp.455-461
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• 2019

The purpose of this study is to find the effect of shared leadership on job satisfaction of principals and teachers of child care centers, and to find the differences of perception between principals and teachers. For this purpose, 120 child care centers in one province was collected through random sampling, and then 93 principals and 101 teachers participated in survey. By SPSS 21.0 version, hierarchical analysis, descriptive statistics and t-test were used to analyze the data. The results showed that principals and teachers all perceived that the shared leadership effects on the job satisfaction. Based on these results, some practical implications for principals and teachers of child care centers to improve the shared leadership and the job satisfaction were suggested.

• Investigative Magnetic Resonance Imaging
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• v.23 no.1
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• pp.55-64
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• 2019

Purpose: One of the suggested potential mechanisms of tinnitus is an alteration in perception in the neural auditory pathway. The aim of this study was to investigate the difference in laterality in functional connectivity between tinnitus patients and healthy controls using resting state functional MRI (rs-fMRI). Materials and Methods: Thirty-eight chronic tinnitus subjects and 45 age-matched healthy controls were enrolled in this study. Connectivity was investigated using independent component analysis, and the laterality index map was calculated based on auditory (AN) and dorsal attention (DAN), default mode (DMN), sensorimotor, salience (SalN), and visual networks (VNs). The laterality index (LI) of tinnitus subjects was compared with that of normal controls using region-of-interest (ROI) and voxel-based methods and a two-sample unpaired t-test. Pearson correlation was conducted to assess the associations between the LI in each network and clinical variables. Results: The AN and VN showed significant differences in LI between the two groups in ROI analysis (P < 0.05), and the tinnitus group had clusters with significantly decreased laterality of AN, SalN, and VN in voxel-based comparisons. The AN was positively correlated with tinnitus distress (tinnitus handicap inventory), and the SalN was negatively correlated with symptom duration (P < 0.05). Conclusion: The results of this study suggest that various functional networks related to psychological distress can be modified by tinnitus, and that this interrelation can present differently on the right and left sides, according to the dominance of the network.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.28 no.4
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• pp.352-364
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• 2018

Objective: The Korean Industrial Hygiene Association(KIHA) held a forum on "Improvement of Material Safety Data Sheets (MSDS) regulations for enhancing the effectiveness and efficiency in the field" at its 2018 Winter Conference(February 2, 2018). This article summarized the major consensus opinions developed at the forum. Methods: Since the initial implementation of the MSDS system, the contents of the system have changed and related studies have been reviewed. Before the forum, online questionnaires were developed and opinions on the effectiveness of MSDS program were collected from various strata of the occupational health field. We also summarized the key opinions of companies, trade unions, experts, and government officials as discussed at the forums. Results: A total of 265 opinions were gathered through online questionnaire surveys from safety and health managers, trade unions, government officials, and health professionals. The results of online surveys and discussions showed some differences of opinion, but it was a common perception that the current MSDS system is not working effectively in the workplace. It was considered necessary to strengthen MSDS education and to make it easier for workers to understand and deliver the necessary information. In addition, it was confirmed that the supply of and education on MSDS to small- and medium-sized enterprise workers is not being well executed. In particular, MSDS training for subcontract workers should be carried out under the responsibility of the contracting employer. Conclusions: In order for the MSDS system to serve more effectively in the field in the future, it needs to be improved in terms of the effective education and training considering the type of industry and employment.

• Journal of the Korea Convergence Society
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• v.10 no.9
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• pp.333-342
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• 2019

This study was attempted to identify the differences in convergence variables that affect wage workers and self-employes' quality of life. The 2013-2017 National Health Nutrition Survey data were used. This study found the factors that affected the quality of life of wage workers were age, economic status, number of family members, marital status, feeling of depression, subjective health status (F = 5.06, p <.001.). Factors that affected the quality of life of self-employed were age, frequency of lunch, frequency of drinking, strength exercise day, BMI, Subjective body shape perception, stress and subjective health status (F = 8.60, p <.001). The results of this study show that in order to develop nursing interventions to improve the quality of life for workers, their characteristics and physical and psychological factors should be taken into account.