• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.277-282
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• 2019

This study analyzed the determinants of the financial Soundness of savings banks. In particular, empirical analysis was carried out on how the loan deposit ratio correlates with financial soundness after restructuring. As the restructuring of savings banks was finalized in 2014, asset management changed and it is time to analyze the financial characteristics of savings banks. In summary, the relationship between the savings bank lending rate and the NPL ratio is estimated to have a negative value at the 1% significance level. In other words, the higher the mortgage rate, the lower the substandard and below ratio. It can be said that it is not easy for a savings bank to build an aggressive loan portfolio. In other words, the more difficult it is to finance loans through savings deposits, the more likely the risk aversion tends to be. The higher the corporate loan ratio, average interest expense, and economic growth rate, the higher the risk index. The larger the asset size and the higher the loan growth rate, the lower the risk index. Increasing the mortgage rate may reduce risk-seeking behavior, but it does not mean that it is unconditionally positive for savings banks. Therefore, the loan deposit rate regulation should reduce the incentives for excessive asset expansion and manage preemptive soundness through lending portfolio management.

• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.379-385
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• 2019

The purpose of this study is to investigate the damage status of wood sleepers on concrete track of urban transit at different locations and to analyze the causes of damages. In addition, the turnout maintenance history during the service period of about 24 years was analyzed in conjunction with the train passing tonnage and that was to compare the current repair history. The most frequent damage components were rail, tie plate, spike and wooden sleeper. And, the damage caused by the defect of the rail fastening system such as spike and tie plate according to the deformation of the wooden sleeper was analyzed as the main type of damage. As a result, the damage of track components of turnout system was on the increase because they are directly affected by the train passing tonnage. The supplementary points of the check sheet for current turnout maintenance were derived and the improvement proposal was suggested based on the research results.

• Geophysics and Geophysical Exploration
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• v.15 no.3
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• pp.129-135
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• 2012

The simultaneous-source full waveform inversion improves the applicability of full waveform inversion by reducing the computational cost. Since this technique adopts simultaneous multi-source for forward modeling, unwanted events remain in the residual seismograms when the receiver geometry of field acquisition is different from that of numerical modeling. As a result, these events impede the convergence of the full waveform inversion. In particular, the streamer-type data with limited offsets is the most difficult data to apply the simultaneous-source technique. To overcome this problem, the global-correlation-based objective function was suggested and it was successfully applied to the simultaneous-source full waveform inversion in time domain. However, this method distorts residual wavefields due to the modified objective function and has a negative influence on the inversion result. In addition, this method has not been applied to the frequency-domain simultaneous-source full waveform inversion. In this paper, we apply a timedamping function to the observed and modeled data, which are used to compute global correlation, to minimize the distortion of residual wavefields. Since the damped wavefields optimize the performance of the global correlation, it mitigates the distortion of the residual wavefields and improves the inversion result. Our algorithm incorporates the globalcorrelation-based full waveform inversion into the frequency domain by back-propagating the time-domain residual wavefields in the frequency domain. Through the numerical examples using the streamer-type data, we show that our inversion algorithm better describes the velocity structure than the conventional global correlation approach does.

• Journal of Digital Convergence
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• v.19 no.10
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• pp.491-500
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• 2021

The status of breast cancer screening of women at a breast clinic in a small city in Korea-Using medical records Purpose: This study was conducted to investigate breast cancer incidence by age, including those under 40, and to emphasize the importance of early breast cancer screening for young breast cancer patients. Method: The study was designed as a retrospective survey method. We investigated the medical charts of 483 patients diagnosed with breast cancer among 23,200 visitors to local breast clinic from May 1, 2010 to April 30, 2020. Results: The average age of 483 patients was 47.9, with 36% in their 40s and 28.6% under 40. Among the patients, 5.4% had a family history of breast cancer, and 70.8% were pre-menopausal. The most common reason for visiting the clinic was the mass(54.2%). The size of tumors was less than 2cm (56%), followed by 2-5cm (43.4%) and more than 5cm (5.6%). The size of tumors was smaller in the asymptomatic case than in the symptomatic case. In the pathologic results, invasive ductal cancer was the most common at 80.3%. Conclusions: Breast cancer screening program should be activated even for young women under the age of 40. We suggest educating the importance of breast cancer screening, and lowering the age of national breast cancer screening program.

• Journal of Digital Convergence
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• v.19 no.10
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• pp.453-467
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• 2021

In this study, the autoregressive cross-lagged model was applied to verify the longitudinal correlation between the three factors and the pattern of changes over time in the mother's cultural adaptation type, the multicultural acceptability of multicultural adolescents, and national identity. For the study, longitudinal data from the 2nd, 4th, 6th, and 8th years of the MAPS tracked from the 5th grade of elementary school to the 2nd grade of high school were used for analysis. As a result of the analysis, all four types of mother's acculturation were analyzed to have a significant longitudinal effect over time. The four types of mothers' cultural adaptation were analyzed to have a longitudinal mediating effect on the relationship between the national identity of multicultural youth. Based on these analysis results, it is necessary to provide a continuous acculturation support program. In order to have a sense of belonging and solidarity with the country, it was suggested that education to increase multicultural receptivity should be carried out in parallel.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.175-182
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• 2021

Focusing on the recently announced "KOSPI 200 ESG Index," this study intends to examine whether the "KOSPI 200 ESG Index" has any relevance to stock prices. Specifically, it was empirically analyzed whether companies included in the KOSPI 200 ESG index showed average abnormal return and cumulative average abnormal return of stock prices due to incorporation into the index. As for the research method, the case study was conducted using the return by the market model using the coefficient estimated by the OLS for the normal expected return. The study results are summarized as follows. First, the initial incorporation of a company into the KOSPI 200 ESG index showed significant positive(+) average abnormal return and cumulative average abnormal return. Second, the incorporation of a company into the KOSPI 200 ESG index showed significant positive(+) average abnormal return and cumulative average abnormal return. Through this study, it was confirmed that investors in the market are aware of ESG indicators as non-financial information, not just financial information. In addition, it can be said that the contribution of this study to the fact that investors perceive ESG index as information for investment. This study differs in that it uses the latest ESG index, but at the same time, it has limitations in that the study period is short and the study sample is limited.

• Journal of radiological science and technology
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• v.44 no.4
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• pp.399-407
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• 2021

This study discussed the validity and necessity of compulsory recording of radiographic examination performed by radiological technologist on patients in medical institutions related to radiation exposure. Also, this study provided reasonable evidence of radiographic examination related medical records can contribute to the improvement of public health. Based on overseas cases of implementing a radiographic examination record system, the essential items to be included in medical record are the exposure date, exposure time, exposure method, exposure conditions that is tube voltage, tube current. Name and license number of the radiological technologist who performed the examination should be include in medical record. It is expected that the medical record of the total amount of radiation exposure per year would be in giving the maximum benefit with the minimum exposure to the medical radiation examination of the patient. In addition, interventional radiography medical record should also include exposure time, type and dose of the contrast medium.

• The Journal of the Convergence on Culture Technology
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• v.7 no.2
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• pp.247-259
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• 2021

Purpose: The purpose of this study was to figure out the effect of nurse staffing in nursing home on the quality of care and quality of life of the residents, using Castle & Engberg's conceptual framework. Methods: A total of 31 studies published between 1996 and 2021 were selected from 6 databases, searched for keyword such as "Nurse staffing", "Nursing staff", "Outcome", "Quality of care", "Quality of life", "residents outcomes", "nursing home", "long-term care". By using Castle & Engberg's conceptual framework, systematic review was conducted. Results: More time provided by nursing staff, high level of licensed nurse staffing, good relationship between nursing staff and residents, and generous supervision system have a positive effect on resident outcomes. Conclusion: Establishing regulatory strategies of having mandatory Registered Nurse is needed because nurse staffing in nursing homes was related to resident outcomes. In addition, it is necessary to conduct further research about quality of life beyond quality of care for residents.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.311-320
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• 2021

This study aims to explore the applicability of the HyFlex Learning Model as a new form of early childhood education in the post-COVID-19 era. In order to achieve the purpose of this study, first, the current challenges of early childhood education and the form of early childhood distance education in Korea were examined. Second, after examining the outline and characteristics of the HyFlex Learning Model(HLM) and the application cases of overseas institutions, in particular, the cases of applying the HLM in overseas early childhood education institutions were reviewed. Third, things to consider when applying the HLM in the field of early childhood education in Korea were derived. As a result, the HLM was investigated to be applicable not only in higher education but also in early childhood education as a model that emphasizes the learner's choice, learner-centered/directed, and activity. In order to apply the HLM to the early childhood education field in Korea, several points to be considered were proposed. Finally, the contribution of this study and further study were suggested.

• Journal of Digital Convergence
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• v.19 no.7
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• pp.253-261
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• 2021

This study aims to confirm the association with the willingness to quit smoking in adult smokers with chronic diseases, and the research method was analyzed using data from the 7th National Health and Nutrition Survey (2016-2018). The subjects were frequency analysis, chi-square test, and logistic regression analysis of 960 chronically ill patients aged 19 years or older, which were analyzed using the SPSS 26.0 Program. As a result of the study, depending on the level of education, high school graduation (OR=1.328, 95%CI=1.004-1.757), college graduation or higher (OR=1.556, 95%CI=1.167-2.075), the more stressed you are (OR=1.602, 95%CI) =1.217-2.109), there was an attempt to quit smoking (OR=5.263, 95% CI=4.287-6.462), which was associated with the willingness to quit smoking. It is necessary to prevent chronic diseases by reducing the smoking rate through active participation in smoking cessation programs targeting groups with high willingness to quit smoking, and by preparing measures to relieve appropriate stress.