• The Journal of the Korea Contents Association
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• v.21 no.12
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• pp.436-447
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• 2021

The boycott of Japanese products triggered by Japan's economic retaliation has heated up the Republic of Korea. This study examined the factors affecting the boycott participation intention in 217 college students and ordinary people in their 20s and 30s. The results of the study showed that perceived egregiousness, self-efficacy, and subjective norm had a positive effect on boycott participation intention, and perceived egregiousness had an indirect effect on boycott participation intention through anger. In addition, these overall impacts were moderated by online and SNS news usage. This study is significant in providing academic and practical implications for understanding boycott phenomena by verifying various influencing factors on consumer boycott intentions and comprehensively reviewing the mediating effect of anger and the moderating effect of online and SNS news usage.

• The Journal of the Korea Contents Association
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• v.22 no.1
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• pp.557-570
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• 2022

The purpose of this study was to review meditation programs for stress relief of Korean nurses. Whittmore and Knafl's integrative review methods were used. The search yielded 97 articles, 7 of which met the criteria and were included in the review. One of the selected studies was a randomized controlled quasi-experimental design and six were a non-equivalent control group pretest-posttest design. Meditation programs varied from 5 to 8 sessions. All of the meditation programs measured the effect on stress as various meditation programs. However, there was one study confirming the degree of stress management maintenance after the end of the meditation program. Although there are contents to strengthen the practice and will of nurses, it was confirmed that it was difficult to evaluate sincerity. Therefore, a highly accessible program for nurses in various clinical situations and strategies to strengthen participants' practice and will needs to be included in the meditation program content.

• The Journal of the Korea Contents Association
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• v.17 no.10
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• pp.300-306
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• 2017

The purpose of this study was to investigate the antibacterial effect of functional multiwall carbon nanotube (MWCNT) on the conventional glass ionomer cement(GIC). The MWCNT was incorporated into a commercial powder at 0.125, 0.25, 0.5 and 1.0 wt%. Specimens for vickers hardness(VHN) disks(Ø$10mm{\times}2mm$) each were prepared. Indention were made using a load of 200 N and 20 s dwell on four specimens for each distilled water storage time 1d, 7d, and 14days. The antibacterial effects using agar diffusion test with S. mutans and S. aureus. The diameters of the inhibition zones produced around the materials were measured. The results revealed that all the vickers hardness values were increase significantly with incubation time(p<0.05). Regarding the antibacterial effect for S. mutans, all the tested groups showed a slightly higher value not significantly with the control group(p<0.05). However S. aureus statistical analysis indicated a significant difference for antibacterial agents between control and MWCNT containing 0.25 wt%(p<0.05). These results of this study provide that the conventional GIC with containing MWCNT show good antibacterial effect against and favorable mechanical properties. Further this study on the efficient functionalization of multiwall carbon nanotube will be needed.

• The Journal of the Korea Contents Association
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• v.7 no.9
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• pp.240-247
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• 2007

The purpose of this study was to analyze the learning effects of video demonstration in a multitude of video screens in a science class. To examine this, an experiment from the first year science textbook was chosen, which looked at the relationship between electrical voltage and electrical current. Three experimental groups were used for the purpose of this study: 1/ a control group which used experimental still photos during a traditional class. 2/ experimental group A which used videos in a single screen, and 3/ experimental group B which used a multitude of video screens to demonstrate their effects. Post test learning effects was then carried out on each group related to the units. The results showed an improvement in grade for all groups. Experimental group B showed the most significant result, followed by the experimental group A. The control group showed the least significant grade improvement. In conclusion, the study revealed that the utilization of video demonstration in a science class is very useful and can be adapted in different forms in class. To enhance the effects of the learning method in conveying efficient meaning, versatile methods should be used to stimulate and heighten students' interests by mixing still photographs and video demonstration with various screen composition with the help of information technology.

• The Journal of the Korea Contents Association
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• v.14 no.12
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• pp.845-853
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• 2014

In this study, we measured the dose reaching the OSLD dosimeter by using the regular lead apron, and air gap apron through 3 experiments, and researched the reductive effect of air gap apron on exposure dose based on the 140 keV gamma ray radiating from $^{99m}technetium$, which is the most commonly used in nuclear medicine. As a result, when the gap between the dosimeter and 0.2mm lead plate is 0 Cm, the average value of 10 dosimeters was 0.515 mSv, and when the gap between the dosimeter and lead plate is 20 Cm, the average value of 10 dosimeters was 0.138 mSv, which shows reductive effect of dose as much as 0.388 mSv. When the gap between the dosimeter and 0.5mm lead plate is 0 Cm, the average value of 10 dosimeters was 0.296 mSv, and when the gap between the dosimeter and lead plate is 20 Cm, the average value of 10 dosimeters was 0.075 mSv, which shows reductive effect of dose as much as 0.221 mSv. As we check the cumulative dosage for 3 days, the lead apron without air layer shows average 0.239 mSv, and the air gap apron shows 0.176 mSv, which is actually reduced by 0.062 mSv. As we check the cumulative dosage for a month, the lead apron without air layer shows 0.59 mSv, and the air gap apron shows 0.54 mSv, which is reduced by 0.05 mSv.

• The Journal of the Korea Contents Association
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• v.14 no.10
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• pp.514-526
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• 2014

The predominant concern of the study consist of: (1) whether Chinese young people think Korean Wave would lasts; (2) the direct effect of viewing degree of Korean contents on the sustainability of Korean Wave; (3) the mediation effect of liking for Korean Wave and receptiveness to foreign cultural inflow on that sustainability; (4) the moderating effect of sense of rivalry between Korean and China. The research is based on a survey conducted with 371 chinese people between high teen and early 30's, located in Guilin of Guangxi and Zhengzhou of Henan in China. The notable findings are as follow: While the group with strong rivalry does not have a direct effect of viewing degree on the sustainability for Korean Wave, the group with weak rivalrous sense and higher viewing degree of Korean contents predict shorter sustainability of Korean Wave, therefore, the moderating effect of sense of rivalry between Korea and China is significant .Next, liking for Korean Wave shows a full mediating effect among Chinese with weak rivalry and a partial mediating effect among them with strong rivalry. The mediating effect of receptiveness to foreign cultural inflow is non-significant.

• The Journal of the Korea Contents Association
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• v.14 no.10
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• pp.850-861
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• 2014

The purpose of this review was to evaluate the effects of simulation-based education on clinical competence and confidence in nursing students and summarize the available evidence on the simulation-based intervention. A systematic review using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses: the PRISMA Statement was conducted. Studies published between 2005 and 2014 were reviewed using the following databases: RISS, KISS, and Google Scholar. The keywords used were nursing and either simulation or simulator. Selected studies were assessed for methodological quality using Quality Assessment Tool for Quantitative Studies. Seventeen studies were identified, including a total of 1,912 nursing students. All the 16 studies found simulation as a valid strategy on clinical competence and confidence in nursing education. This review provides updated evidence for simulation-based learning in nursing education. Further studies are needed to increase generalizability using randomized controlled trials, enough sample size, and longitudinal study design. In addition, valid measurements are needed to assess the main outcomes.

• The Journal of the Acoustical Society of Korea
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• v.23 no.6
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• pp.437-445
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• 2004

In this paper. we describe a novel method for transforming audio contents according to user's preference on sound field. Sound field effect technologies. which transform or simulate acoustic environments as user's preference, are very important for enlarging the reality of acoustic scene. However huge amount of computational power is required to process sound field effect in real time. so it is hard to implement this functionality at the portable audio devices such as MP3 player. In this paper, we propose an efficient method for providing sound field effect to audio contents independent of terminal's computational power through processing this functionality at the server using user's sound field preference, which is transfered from terminal side. To describe sound field preference, user can use perceptual acoustic parameters as well as the URI address of room impulse response signal. In addition, a novel fast convolution method is presented to implement a sound field effect engine as a result of convoluting with a room impulse response signal at the realtime application. and verified to be applicable to real-time applications through experiments. To verify the evidence of benefit of proposed method we performed two subjective listening tests about sound field descrimitive ability and preference on sound field processed sounds. The results showed that the proposed sound field preference can be applicable to the public.

• The Journal of the Korea Contents Association
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• v.21 no.4
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• pp.463-472
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• 2021

The purpose of this study is to find a way for social welfare organizations to actively cope with environmental changes such as the corona incident according to the work coordination theory that work performance improves when actively coping with environmental changes. In other words, the mediating effect of member agility in the relationship that participatory decision-making affects job performance was identified. The subjects of the survey were workers in welfare centers in the metropolitan area and Chungcheong area, and 310 questionnaires were analyzed, and confirmatory factor analysis, research model analysis, and mediation effect verification were conducted to verify the hypothesis. As a result of the study, participatory decision-making had a significant positive effect on member agility and job performance. In addition, it was confirmed that the partial mediation model including the path that participatory decision-making directly affects job performance and the indirect effect that is linked to job performance after first affecting the agility of members is appropriate. The study has academic significance in that it verifies the effect of participatory decision-making and agility necessary for social welfare organizations, and suggests ways to improve participatory decision-making and agility in hiring, evaluation, and education of employees in social welfare organizations. In this respect, significance can also be found in practical terms.

• The Journal of the Korea Contents Association
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• v.18 no.11
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• pp.643-654
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• 2018

In order to understand and manage traffic flows in urban areas in the past, a variety of traffic engineering theoretical indicators such as intersection lag and highway speed have been applied. However, these theories and indicators have been developed under the constraints of traffic engineering research before the construction of intelligent transportation system. Since the ATIS system currently exists, it is necessary to introduce a separate traffic engineering technology that utilizes the data. In this paper, it is aimed to confirm whether it is applicable to intermittent flow (approach road, intersection, control group, main road axis) by using 'congestion intensity' which is already used in traffic engineering field. The results of this study are as follows: (1) The traffic signal improvement effect of urban road access road, intersection road, control group, Two verification studies were performed to verify the derived congestion intensity index. (1) verification of congestion intensity threshold value analysis and (2) crossing improvement using the congestion intensity. Through verification, it was confirmed that it is possible to apply the congestion intensity in the inter - city intermittent flow using the 5 - minute unit speed data so as to be able to escape from the existing traffic signal operation management which is past passive and manpower limit.