• Korean Journal of Materials Research
• /
• v.27 no.6
• /
• pp.345-349
• /
• 2017

The effects of electron beam(EB) irradiation on the electrical and optical properties of InGaZnO(IGZO) thin films fabricated using a sol-gel process were investigated. As the EB dose increased, the electrical characteristic of the IGZO TFTs changed from semiconductor to conductor, and the threshold voltage values shifted to the negative direction. X-ray photoelectron spectroscopy analysis of the O 1s core level showed that the relative area of oxygen vacancies increased from 14.68 to 19.08 % as the EB dose increased from 0 to $1.5{\times}10^{16}electrons/cm^2$. In addition, spectroscopic ellipsometer analysis showed that the optical band gap varied from 3.39 to 3.46 eV with increasing EB dose. From the result of band alignment, it was confirmed that the Fermi level($E_F$) of the sample irradiated with $1.5{\times}10^{16}electrons/cm^2$ was located at the closest position to the conduction band minimum(CBM) due to the increase of electron carrier concentration.

• Journal of Convergence for Information Technology
• /
• v.11 no.10
• /
• pp.45-52
• /
• 2021

In this paper, we proposed an Atrous Residual U-Net (AR-UNet) to improve the segmentation accuracy of semantic segmentation method based on U-Net. The U-Net is mainly used in fields such as medical image analysis, autonomous vehicles, and remote sensing images. The conventional U-Net lacks extracted features due to the small number of convolution layers in the encoder part. The extracted features are essential for classifying object categories, and if they are insufficient, it causes a problem of lowering the segmentation accuracy. Therefore, to improve this problem, we proposed the AR-UNet using residual learning and ASPP in the encoder. Residual learning improves feature extraction ability and is effective in preventing feature loss and vanishing gradient problems caused by continuous convolutions. In addition, ASPP enables additional feature extraction without reducing the resolution of the feature map. Experiments verified the effectiveness of the AR-UNet with Cityscapes dataset. The experimental results showed that the AR-UNet showed improved segmentation results compared to the conventional U-Net. In this way, AR-UNet can contribute to the advancement of many applications where accuracy is important.

• Journal of Convergence for Information Technology
• /
• v.11 no.11
• /
• pp.266-276
• /
• 2021

The purpose of this study is to examine the scalp care behavior by dividing the lifestyle of female college students based on the health belief model into detailed types to promote healthy scalp care behavior. For the study was conducted with a total of 534 people college student in Seoul, Gyeonggi Province from 18 March 2020 to 7 April 2020. As a result, the difference in the level of belief in scalp health care according to lifestyle showed significant differences in perceived benefit, perceived disability, and self-efficacy. In addition, the results of the difference in scalp care behavior according to lifestyle were found to be high in the order of social orientation, fashion pursuit, and economic orientation. Through this study, it is thought that it is necessary to open information and education programs that can raise the level of belief in scalp health and to develop scalp care products for each lifestyle type.

• Journal of Convergence for Information Technology
• /
• v.11 no.4
• /
• pp.168-175
• /
• 2021

This study aimed to identify the impact of human rights violations on elderly discrimination, focusing on the mediating effect of elderly-related experiences. After conducting a two-month survey of 143 dental students in some parts of Busan from September 4, 2020, hierarchical regression analysis was conducted to find out the mediating effects of elderly-related experiences using the SPSS 26.0 program. Dental hygiene students' perception of infringement on elderly human rights was shown to be significant in elderly discrimination(r=-.310) and elderly-related experiences(.185), indicating that elderly-related experiences were partially mediated in elderly human rights infringement and elderly discrimination. Therefore, this study intends to provide basic data on the development of dental hygiene curriculum in a super-aging society by reconsidering the need for senior-related experiences in dental hygiene and education.

• Journal of Convergence for Information Technology
• /
• v.11 no.5
• /
• pp.251-258
• /
• 2021

This study was conducted to investigate the impact of emotional intelligence according to the level of interpersonal relation competence. For the study, data were collected from 126 students in the department of nursing at a university located in B city from November 29 to December 16, 2019, and data were analyzed by Anova and Regression analysis. The interpersonal relation competence of nursing students was classified into less than 60 and 60 or more. In the group with an average of less than 60 in interpersonal relation competence. nursing students' self-emotional expression and control of others were significant positive effecting factors for interpersonal relation competence(explanatory power, 22.5%). In the group with an average of 60 or more in interpersonal relationship competence, self-emotional expression and Motivation were significant effecting factors(explanatory power 33.6%). According to the results of this study, we propose an individual approach according to their level of interpersonal relation competence for nursing education to improve the interpersonal relation competence abilities of nursing students.

• Journal of the Health Care and Life Science
• /
• v.9 no.1
• /
• pp.141-146
• /
• 2021

Determination of capsaicin, dihydrocapsaicin and nonivamide in pungent liquids of self-defense spray were studied. The nonivamide having almost same spicy taste with capsaicin have been containing a few amounts in natural products, it had called as synthetic capsaicin or PAVA, have used to flavorings for foodstuffs and incapacitating agents of riot controls. Nowadays, it has been occasionally found that the quality controls of a self-defense sprays were not properly due to flood of illegal self-defense sprays. Thus, the simple analytical method with gas chromatography is developed, it is identified whether the products which have contained synthetic capsaicin were marked like natural materials as well as the pungent ingredients in it obeyed with permissible concentration to human or not was investigated. Finally, the pungent components and amounts in some kinds of self-defense spray were investigated.

• Journal of the Korea Convergence Society
• /
• v.9 no.11
• /
• pp.91-97
• /
• 2018

The plant factory represents one of the future agricultural systems into which ubiquitous information technology (U-IT) is incorporated, including sensor networking, and helps minimize the influence of external experimental factors that constrain the use of existing greenhouse cultivation techniques. A plant factory's automated cultivation system does not merely provide convenience for crop cultivation, but also expandability as a platform that helps build a knowledge database based on its acquired information and develop education and other application services using the database. For the expansion of plant factory services, this study designed a plant factory interworking service (PFIS) which allows plant factories to share crop growth-related information efficiently among them and performed a test on the service and its implementation.

• Journal of Convergence for Information Technology
• /
• v.9 no.2
• /
• pp.155-164
• /
• 2019

In this study, 284 families of people with developmental disabilities responded to a survey about the importance of family support services and their recognition level of satisfaction. First, there was a statistically significant difference in the level of importance-satisfaction recognition of family support services for the people with developmental disabilities. Second, the recognition level of the importance of family support services of the people with developmental disabilities was in the order of support for parenting, support for physical and material wellbeing, support for family interaction. Third, satisfaction of family support services of the people with developmental disabilities was in the order of support for parenting activities, support for family interaction, support for emotional wellbeing. Fourth, we proposed the maintenance of the status quo, improvement efforts, and the need for mid-and long-term strategy by analyzing the characteristics of the importance-satisfaction quadrant. The results of this study are expected to be useful as basic data for improvement of family support services for the people with developmental disabilities.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.1
• /
• pp.470-476
• /
• 2019

The braking force for a train is generally provided by compressed air. The pressure valve system that is used to apply appropriate braking forces to trains has a complex flow circuit. It is possible to make a channel shape that can increase the flow efficiency by 3D printing. There are restrictions on the flow shape design when using general machining. Therefore, in this study, the compressed air flow was analyzed in a pressure valve system by comparing flow paths made with conventional manufacturing methods and 3D printing. An analysis was done to examine the curvature magnitude of the flow path, the diameter of the flow path, the magnitude of the inlet and reservoir pressure, and the initial temperature of the compressed air when the flow direction changes. The minimization of pressure loss and the uniformity of the flow characteristics influenced the braking efficiency. The curvilinear flow path made through 3D printing was advantageous for improving the braking efficiency compared to the rectangular shape manufactured by general machining.

• Journal of Convergence for Information Technology
• /
• v.9 no.3
• /
• pp.44-55
• /
• 2019

The purpose of this study was to investigate the experiences of male college students through sport toto gambling and to provide basic data on the prevention program for male college gambling addicts. Participants in the study were eight male college students who were interviewed in depth and analyzed according to Colaizzi's phenomenological study method. As a result of this study, four categories of experiences were derived as follows: Like the wind that rushes to the sea, Tears of remorse, A locked down life and On a dream day. Research shows that sports toto is easy to access and has a lot of interesting factors, however it has been found out that male college students have a great risk of falling into addiction aiming to win at once like ordinary gamblers. Therefore, this study suggests that gambling preventive education and counseling are necessary for male college students who like sports.