• Journal of Convergence for Information Technology
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• v.11 no.10
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• pp.314-321
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• 2021

This study analyzed the mediating effects of self-esteem and peer relationship in the effects between physical satisfaction and academic adaptation of multicultural youth. The subjects of the study were 1,064 first-year high school students at the time of the survey using the 8th Multicultural Youth Panel (MAPS) data. For data analysis, descriptive statistics, correlations, and path analysis of measurement variables were carried out using SPSS 25.0. According to the analysis, first, multicultural youth's body satisfaction has a positive effect on academic adaptation, and second, self-esteem is completely mediated in the relationship between body satisfaction and academic adaptation. Third, the relationship between multicultural youth's body satisfaction and academic adaptation has been partially mediated. The results will be used to develop basic data and programs to support healthy growth of multicultural youth. These results can be used to develop basic data and programs to devise support measures for healthy growth of multicultural youth.

• Journal of Convergence for Information Technology
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• v.11 no.10
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• pp.45-52
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• 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
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• v.11 no.8
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• pp.23-28
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• 2021

In this paper, we analyze the tracking errors of monopulse radar according to the JSR of retrodirective cross-eye and radar skin return signals. The cross-eye jammer gain(G_c) is used to calculate the radar tracking errors, and the relationship between the jammer gain and the JSR is represented mathematically. We analyze the radar tracking errors by varying the tracking angle and JSR. Analysis results of the phase difference(ϕ) and amplitude ratio(a) between the two jammer signals and the changing JSR show that the closer the phase difference of the two jammer signals is to 180, the greater the tracking error and it shows that if the JSR is above 20dB, the tracking errors no longer increase. This work presents an effective utilization of retrodirective cross-eye jammers through various tracking error analyses based on the JSR, tracking angles, two-jammer phase differences and amplitude ratios of two-jammer signals.

• Journal of Convergence for Information Technology
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• v.11 no.8
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• pp.212-223
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• 2021

This study has purposes : evaluating how safe the skin is when applied with the Spicules-containing cosmetic, and whether Diamond-spicules is permeated into the skin and showed the efficacy of the active ingredients well. For these aims, women in their 30s and 60s were surveyed for skin irritation and changes after applying cosmetics to their skin for four weeks. As a result, Spicules-containing cosmetics were safer on the skin than general functional cosmetics, and in particular, in the case of cosmetics containing Diamond-spicules, statistically significant results (p<.001) were obtained in improvement of anti-wrinkle, firmness, moisturizing, whitening, alleviation of inflammation, and sensitivity. Thus, It has been proved Diamond-spicules containing functional active ingredients, not only as transdermal delivery system, but also can be used as multifunctional cosmetic material.

• Journal of Convergence for Information Technology
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• v.11 no.8
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• pp.14-22
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• 2021

As the Covid-19 outbreak spreads and prolongs around the world, visitor lists are prepared in various ways when entering the facility to prevent infection and identify confirmed people. In this study, we propose an access management system using beacons to solve the problems with the preparation and management of existing visitor lists. The research method searches the laws related to the collection of personal information and compares the current status of personal information collection and trends in the beacons. The proposed system compares and analyzes existing methods and security and efficiency, which confirm accurate and rapid access registration. By using Beacon access management system, it is effective in preventing and responding to the spread of new infectious diseases in the future.

• Journal of Convergence for Information Technology
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• v.11 no.8
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• pp.168-175
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• 2021

Goal of this study is to perform the correlation about Gross motor function, eating-drinking function, and oral motor function, to identify necessity for invervention of feeding disorders on severity of the function of children with cerebral palsy. Subjects were 61 children diagnosed with cerebral palsy. The subject were evaluated for oral motor function, feeding function by GMFCS, EDACS, OMAS. The results of this study showed a significant correlation between gross motor function, eating and drinking functions, and oral motor functions. That is, the more severe the deterioration of the motor function, the lower the functional level of eating and drinking and oral motor function deterioration. In evaluating and treating the eating activity of children with cerebral palsy through this study, it seems necessary to check the eating and drinking function and oral motor function according to the gross motor function.

• Journal of Convergence for Information Technology
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• v.11 no.5
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• pp.251-258
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• 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 Convergence for Information Technology
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• v.11 no.5
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• pp.215-222
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• 2021

This study aims to verify the potential of functional cosmetic materials by examining the antioxidant effects of Aplidium pliciferum and Herdmania momus, used to determine the antioxidant efficacy of Aplidium pliciferum and Herdmania momus ethanol extracts, Mean and standard deviation were calculated using Minitab® 18 (IBM, USA). After various radicals were removed from the extracts of Aplidium pliciferum and Herdmania momus, DPPH was detected in 30.87±1.98% in Aplidium pliciferum, 88.27±0.84% in Herdmania momus, and ABTS in 56.23±2.50% in Aplidium pliciferum and 94.80±0.91% in Herdmania momus in the concentration of 20 mg/ml. Also, NO was detected in 88.57±0.81% in Aplidium pliciferum and 97.53±0.34% in Herdmania momus, respectively, thus all showing statistically significant differences. So we can confirm the efficiency of the solvent acts as an important factor through the total poly phenol content

• Journal of Convergence for Information Technology
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• v.11 no.5
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• pp.74-85
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• 2021

The purpose of this study was to examine relationships among resilience and family support on job stress and identity the factors that influence on job stress in police officers. Participants were 152 police officer working in C city, H and C districts. Data were analyzed using descriptive statistics, t-test, one-way ANOVA, Scheffe test, Pearson correlation coefficient, and multiple regression using the SPSS Win. 23.0 program. The result of the multiple regression indicates the family support, gender, positivity, work experience, and work type predict 25.0%(F=10.84, p<.001) in job stress. Therefore, it is necessary to develop program a resilience and family support use specific strategies to decrease job stress.

• Journal of Convergence for Information Technology
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• v.11 no.12
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• pp.115-126
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• 2021

This study develops a simulation model that performs flood analysis considering both urban and river flood. For the analysis of river flood, this study considers river overflow by levee breach, and reflects the concept of the dual drainage systems for the analysis of urban flood. In relation to the surface flood analysis, FEM technique is applied to the flood diffusion analysis in order to conduct the flow analysis of urban and river flood simultaneously. For the verification of the model, it is first applied to the conceptual model, and then applied to the actual watershed. It is expected that this study will be able to reduce flood damage and to prepare effective countermeasures to reduce flood damage.