• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.12
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• pp.1756-1761
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• 2021

Although the COVID-19 outbreak that occurred in Wuhan, Hubei around December 2019, seemed to be gradually decreasing, it was gradually increasing as of November 2020 and June 2021, and estimated confirmed cases were 192 million worldwide and approximately 184 thousand in South Korea. The Central Disaster and Safety Countermeasures Headquarters have been taking strong countermeasures by implementing level 4 social distancing. However, as the highly infectious COVID-19 variants, such as Delta mutation, have been on the rise, the number of daily confirmed cases in Korea has increased to 1,800. Therefore, the number of cumulative confirmed COVID-19 cases is predicted using ARIMA algorithms to emphasize the severity of COVID-19. In the process, differences are used to remove trends and seasonality, and p, d, and q values are determined and forecasted in ARIMA using MA, AR, autocorrelation functions, and partial autocorrelation functions. Finally, forecast and actual values are compared to evaluate how well it was forecasted.

• Journal of Digital Convergence
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• v.21 no.2
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• pp.17-25
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• 2023

The purpose of this study was to analyze the characteristics of elderly motorcycle accidents according to data from elderly inpatients to prepare prevention measures for the elderly against injury in motorcycle accidents. Chi-squared test, independent sample t-test, and canonical correlation analysis were performed on the Korea Disease Control and Prevention Agency's National Hospital Discharge In-depth Injury Survey data from 2015 to 2019, from which the records of 1,384 elderly inpatients hospitalized because of motorcycle accidents were obtained. intracranial injury(S06) was the most common care and treatment characteristic for both age groups. The most frequent injury site was the head and neck, and the most frequent injury type was a fracture. The above findings show that prevention education and policy formulation at the national level are necessary to identify and manage the factors of elderly motorcycle accidents. This study provides basic data for developing measures and policies to prevent and reduce injuries, making it significant for public health causes.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.141-141
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• 2022

Drought is a global phenomenon that affects almost all landscapes and causes major damages. Due to non-linear nature of contributing factors, drought occurrence and its severity is characterized as stochastic in nature. Early warning of impending drought can aid in the development of drought mitigation strategies and measures. Thus, drought forecasting is crucial in the planning and management of water resource systems. The primary objective of this study is to make improvement is existing drought forecasting techniques. Therefore, we proposed an improved version of Seasonal Autoregressive Integrated Moving Average (SARIMA) model (MD-SARIMA) for reliable drought forecasting with three years lead time. In this study, we selected four watersheds of Han River basin in South Korea to validate the performance of MD-SARIMA model. The meteorological data from 8 rain gauge stations were collected for the period 1973-2016 and converted into watershed scale using Thiessen's polygon method. The Standardized Precipitation Index (SPI) was employed to represent the meteorological drought at seasonal (3-month) time scale. The performance of MD-SARIMA model was compared with existing models such as Seasonal Naive Bayes (SNB) model, Exponential Smoothing (ES) model, Trigonometric seasonality, Box-Cox transformation, ARMA errors, Trend and Seasonal components (TBATS) model, and SARIMA model. The results showed that all the models were able to forecast drought, but the performance of MD-SARIMA was robust then other statistical models with Wilmott Index (WI) = 0.86, Mean Absolute Error (MAE) = 0.66, and Root mean square error (RMSE) = 0.80 for 36 months lead time forecast. The outcomes of this study indicated that the MD-SARIMA model can be utilized for drought forecasting.

• Journal of Digital Convergence
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• v.12 no.8
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• pp.369-376
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• 2014

Death education the subject of interest is the subject of the medical staff for the death of stress degree and acceptable approach to analyze the death centered on the hospital space education in order to take advantage of From April 2014 until April 30, 281 people who lived Daejeon were surveyed. Analysis of the results, if they are taken the death education, it was considered more important than none education. If Patient in an unrecoverable state, to the question of who to notify, guardian had the highest score. Suitable for end-of-life include home, healthcare, social welfare facilities in order. When you take advantage of the results, In order to understand and take care of the phenomenon of death, we accommodate health and medical treatment perspective, humanity perspective, social perspective. It is Study for Death education program that can be applied to public. It is significant as a basis material to popularize and generalize death education program.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.5
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• pp.274-280
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• 2020

The purpose of this study was to identify the average cost and present status of non-benefit medical expenses by using the data of tertiary hospitals released by the Health Insurance Review and Assessment Service(HIRA), and to compare the data to find cost variations. The target of analysis was the present status of the non-benefit medical expenses reported by 41 tertiary hospitals among the 44 previously designated hospitals (three were excluded due to revocation or new designation) for 2015, 2016, 2017, and 2018 (until April). This study was conducted after approval of using the released data of the HIRA's data opening system. This study was analyzed by its general characteristics, annual non-benefit medical expenses by frequency analysis, and annual understanding of variation by designating Coefficient of Variation (C.V.). The research found out that the number of details of non-benefit medical expense was gradually increased: the numbers of categories were 51 in 2015, 53 in 2016, and 98 in 2017, but there was a rapid increase in 2018 by 193. As a result, to standardize non-benefit medical expense items across tertiary hospitals due to their variations in the expenses, the government should expand standardized non-benefit medical expenses and make it mandatory for medical institutions to use the standardized items or names of such expenses.

• Journal of the Korea Convergence Society
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• v.8 no.5
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• pp.61-68
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• 2017

This study investigates the differences in medical practices and medical cost according to auto insurance companies based on 8,589,602 cases that were treated by auto insurance corporation for the year of 2015, from the beginning of January to the end of December. The results of this study can be summarized following. First, in terms of the general characteristic in medical treatment, especially the age, the highest figure in both non-life insurance and mutual aid cooperative was shown in the age of 50 to 59 at 22.8 per cent(p<0.001). Second, in terms of a medical cost per a hospital care, classified by clinic, the costs in the department of internal medicine were much higher than those in the surgical department, and the thoracic surgery among parts of the surgical department showed the highest figures in both non-life insurance and mutual aid cooperative. According to the above summarized results of this study, it can be concluded that Health Insurance Review and Assessment Service has to address the problem on the increase of unnecessary costs and the occurrence of social expenses caused by the delay of patients' rehabilitation and return to their daily lives, by carrying out the evaluation for the appropriateness to organizations that ask for payments of auto insurance.

• Journal of the Korea Convergence Society
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• v.9 no.6
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• pp.99-106
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• 2018

The purpose of this study is to investigate incidence rates of complications in response to the introduction of quality evaluation of the DRG(diagnosis related group) payments, focusing on an increasing number of patients with lens surgery as the population aging increases.Fourthly, there were three dependent variables ('vitreous prolapse', 'IOP elevations', and 'other complications') in this study, and therefore multivariate logistic regression was performed. The result of the analysis indicates that as the number of hospitalized days increased, vitreous prolapse decreased to 0.27 times(95% CI 0.08~1.00) and IOP elevation decreased by 0.14 times(95% CI 0.03~1.59), compared to other complications, and this was statistically significant. From the above results, this study is meaningful in that it has compared the evaluation results of the appropriateness of DRG payment and the medical quality for lens surgery complications patients, in response to the introduction of quality evaluation by DRG payment.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.8
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• pp.407-414
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• 2016

This study was conducted to provide basic data to evaluate the appropriateness of convalescent hospitalization treatment by investigating the number of hospitalization days and the total treatment expenses of a total of 44,037 monthly billing statements requested from the Health Insurance Review and Assessment Service. Evaluated data consisted of medical care expenses of patients of the diem payment system hospitalized at convalescent hospitals in Daejeon, Chungnam, Chungbuk and Sejong from January through December of 2014. According to the analysis result of the general characteristics of the study objects and the canonical correlation analysis of the top 15 main diagnosis names, 7 canonical functions have been deducted. Among them, six canonical functions were shown to be statistically significant (p<0.001), and canonical function 1 had a chi-squared value of 5955.49 and 98 degrees of freedom at p<0.001 level. Overall, the results indicated that if health and welfare service in the regional society is magnified, social hospitalization can be reduced.

• Korean Journal of Agricultural and Forest Meteorology
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• v.9 no.2
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• pp.88-99
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• 2007

Soil moisture is one of the essential components in determining surface hydrological processes such as infiltration, surface runoff as well as meteorological, ecological and water quality responses at watershed scale. This paper discusses soil moisture transfer processes measured at hillslope scale in the Gwangneung forest catchment to understand and provide the basis of stochastic structures of soil moisture variation. Measured soil moisture series were modelled based upon the developed univariate model platform. The modeling consists of a series of procedures: pre-treatment of data, model structure investigation, selection of candidate models, parameter estimation and diagnostic checking. The spatial distribution of model is associated with topographic characteristics of the hillslope. The upslope area computed by the multiple flow direction algorithm and the local slope are found to be effective parameters to explain the distribution of the model structure. This study enables us to identify the key factors affecting the soil moisture distribution and to ultimately construct a realistic soil moisture map in a complex landscape such as the Gwangneung Supersite.

• Journal of the Korea Convergence Society
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• v.8 no.6
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• pp.55-64
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• 2017

The research study focuses to analyze the result of the military personnel medical examination and identify the medical conditions of military individuals. The results of this study are as follows. First of all, for the general features of research subjects, there are 60 people who are 39-year-old or less and 60 people in the age of 40-year-old or over of the total 120 research subjects. Secondly, as a result of canonical correlation analysis in between their ages/body mass index(BMI) and the outcomes of medical examination, it derived 3 canonical functions. 2 of the functions out of the 3 demonstrated statistical significance. The research has conjured meaningful results which include that the holistic diagnosis and treatment system for the military officers needs additional enhancement. Also the medical examination is in desperate need of expansion in test items and the associated budget planning should be evaluated in government organizations related to welfare policy.