• 보건행정학회지
• /
• 제24권4호
• /
• pp.322-329
• /
• 2014

Background: As most of people in Korea are covered by National Health Insurance (NHI), the disease information collected in NHI provides high availability for health policy. Nevertheless, the validity of disease codes in NHI data has been controversial till now. So we tried to evaluate the validity of them by comparing the NHI claims data with Korean National Hospital Discharge In-depth Injury Survey (KNHDIIS) data. Methods: We compared the NHI patients sample data (2009) with the KNHDIIS data (2009). We selected the inpatient data of KNHDIIS and NHI patients sample. The weighted number of patients from NHI patients sample was 5,551,210 and the number of patients from KNHDIIS was 5,559,874. We classified the disease codes into principal diagnoses and other diagnoses, and we compared as one, two, three unit level. Also we calculated the agreement rate of each of them. Results: In the comparison of principal diagnoses, NHI claims data had more C code than KNHDIIS data did, whereas KNHDIIS data had more Z code than NHI claims data did. In the comparison of other diagnoses, NHI claims data had 2, 3 more codes than KNHDIIS data did. The overall agreement rate at three unit level was 76.5% in principal diagnoses and 46.8% in other diagnoses. Conclusion: Considering the large difference between the two data, the validity of disease codes in NHI Claims data seems to be low. To increase the validity of them, the definite detail coding indicator, the reinforcement of coding education, and the reform of system are needed.

• 보건행정학회지
• /
• 제23권3호
• /
• pp.224-232
• /
• 2013

Background: This study was a comparative analysis of the major curriculum for 2-year, 3-year, and 4-year colleges of the department of health administration in Korea. Methods: Among 45 Korean colleges registered with the department of health administration as of 2012, finally 25 colleges were selected by establishing the department of health administration more than 5 years ago, excluding government's financial support, and taking regional locations into account. Results: First, generally 2-year colleges was not the relationships between organizational philosophy/purposes and major course in comparison to those of 3-year or 4-year colleges. Second, the composition of credits in the major course appears to be higher for 3-year, 2-year, and 4-year colleges, respectively. Third, subjects related to basic medicine and medical records were included more often in 2-year, 3-year, and 4-year colleges, respectively, and health policy issues were covered more in 4-year, 3-year, and 2-year colleges, respectively. Fourth, the number of students per full-time professor in 2-year colleges was much higher than that in 3-year and 4-year colleges, and the employment rate of graduates for 4-year colleges was found to be higher than that for 2-year and 3-year colleges. Conclusion: Although this study has limitations with regard to the selection of research subjects, it provides baseline data for establishing the health administration required for training competent future professionals.

• 보건행정학회지
• /
• 제29권3호
• /
• pp.288-302
• /
• 2019

Background: The one-person households (OPH) are rapidly increasing and vulnerable to socioeconomic and health problems. Because it is predicted to be inequitable to health care utilization, we would like to find out about the equity of health care utilization of the OPH by comparison with the multi-person households (MPH). Methods: This study followed the theoretical framework of Wagstaff and van Doorslaer (2000), O'Donnell and his colleagues (2008), where the horizontal inequity index is the difference between the concentration indices of actual health care utilization and health care needs. This study employed the 9th Korea Health Panel survey, and a total of 10,807 cases were analyzed. Health care needs were measured by age, sex, subjective health status, chronic disease count, Charlson's Comorbidity Index, limitation of activities, and disability. Results: Compared with the MPH, there were pro-poor inequities in hospitalization, emergency utilization, hospitalization out-of-pocket payments, and pro-rich inequities in outpatient out-of-pocket payments for the OPH. The decomposition of the concentration index revealed that chronic disease count made the largest contribution to socioeconomic inequality in outpatient utilization. Age, health insurance, economic activities, and subjective health status also proved more important contributors to inequality. The variables contributing to the hospitalization and emergency utilization inequity were age, education, Charlson's Comorbidity Index, marital status, and income. Conclusion: Because the OPH was more vulnerable to health problems than the MPH and there were pro-poor inequities in medical utilization, hospitalization, and emergency costs, it is necessary to develop a policy that can correct and improve the portion of high contribution to medical utilization of the OPH.

• 디지털융복합연구
• /
• 제11권6호
• /
• pp.151-157
• /
• 2013

본 연구는 사용자 스스로 자신이 원하는 운동자세의 기준을 설정하고 설정된 기준 자세와 자신의 자세를 비교할 수 있게 하며, 자신의 자세에 대한 평가를 스스로 가능하게 하여 자기 주도 학습을 통해 자신의 운동자세를 능동적으로 익힐 수 있게 하는 운동자세 트레이닝 시스템이다. 이 시스템은 사용자의 운동자세를 촬영하여 사용자 운동자세 동영상 데이터를 생성하는 카메라부 사용자 운동자세 동영상 데이터 및 사용자 운동자세 동영상과 비교하기 위한 비교 대상 자세 동영상 데이터를 저장하며, 사용자 입력에 따라 사용자 운동자세 동영상 데이터 및 비교 대상 자세 동영상 데이터를 동시에 재생할 수 있는 비교 화면을 제공하는 운동자세 트레이닝 서버; 및 운동자세 트레이닝 서버와 네트워크를 통해 연결되며, 사용자 입력을 상기 운동자세 트레이닝 서버로 전달하고, 운동자세 트레이닝 서버에서 제공하는 비교 화면을 제공받아 디스플레이하는 사용자 단말을 포함한다.

• Journal of Preventive Medicine and Public Health
• /
• 제45권2호
• /
• pp.90-97
• /
• 2012

Objectives: While there have been many quantitative studies on the public's attitude towards mental illnesses, it is hard to find quantitative study which focused on the contextual effect on the public's attitude. The purpose of this study was to identify factors that affect the public's beliefs and attitudes including contextual effects. Methods: We analyzed survey on the public's beliefs and attitudes towards mental illness in Korea with multi-level analysis. We analyzed the public's beliefs and attitudes in terms of prejudice as an intermediate outcome and social distance as a final outcome. Then, we focused on the associations of factors, which were individual and regional socioeconomic factors, familiarity, and knowledge based on the comparison of the intermediate and final outcomes. Results: Prejudice was not explained by regional variables but was only correlated with individual factors. Prejudice increased with age and decreased by high education level. However, social distance controlling for prejudice increased in females, in people with a high education level, and in regions with a high education level and a high proportion of the old. Therefore, social distance without controlling for prejudice increased in females, in the elderly, in highly educated people, and in regions with a high education and aged community. Conclusions: The result of the multi-level analysis for the regional variables suggests that social distance for mental illness are not only determined by individual factors but also influenced by the surroundings so that it could be tackled sufficiently with appropriate considering of the relevant regional context with individual characteristics.

• 정보처리학회논문지B
• /
• 제14B권2호
• /
• pp.127-134
• /
• 2007

기계 학습 등 인공 지능 기법의 발전에 힘입어 지능형 주식 거래 시스템에 관한 많은 연구가 이루어져 왔다. 그러나 현실 주식 거래에서 적절한 거래 정책의 수립이 거래의 결과에 커다란 영향을 미치는 중요 요소로 작용하고 있음에도 불구하고, 기존의 연구에서는 예측 모듈의 예측 성능 향상에 주력하였거나, 거래 정책을 다룬 경우라도 예측 모듈에 종속적인 단순한 정책만을 제시하였다. 본 논문에서는 이러한 문제를 개선하기 위한 방안의 하나로, 신경망 기반 주식 거래 시스템의 구축을 위한 통합 개발 도고인 NXShell에서 채택하고 있는 ‘통합 다중 시뮬레이션‘ 기법을 제안한다. 통합 다중 시뮬레이션 기법에서는 신경망의 출력 값과 거래 정책 인자들 간의 모든 주어진 예측기의 특성에 맞는 고유의 최적 거래 정책을 수립한다. 제안된 기법의 효용성을 검증하기 위해, 한국 거래소 시장 및 코스닥 시장에서 수집한 데이터를 사용하여 수행한 거래 성능 비교 실험 결과를 제시한다.

• 한국수자원학회논문집
• /
• 제56권5호
• /
• pp.357-362
• /
• 2023

상류지역과 하류지역간 갈등은 우리나라의 대표적인 사회적 갈등이자 물갈등에 해당하는 사례로 이해당사자들에게는 재산권 침해와 수질보전 및 이용이라는 이념과 이익을 기반으로 경제적, 환경적 측면에서 이해관계가 첨예한 문제이다. 그러나 각 지역에서 느끼는 경제적 피해 및 편익에 대한 연구는 미흡한 실정이며 각 지역의 주장에만 근거하고 있어 갈등해결을 위한 방안을 도출하는데 어려움에 직면하고 있다. 본 연구에서는 우리나라의 주요한 물갈등의 하나인 상수원보호구역을 대상으로 상류지역의 재산권제약으로 인한 사회적 손실과 수질보전으로 인한 하류지역의 사회적 편익을 비교하여 상수원보호구역의 타당성을 검증하고 갈등해결을 위한 유역통합물관리 정책을 제언하였다.

• 디지털융복합연구
• /
• 제14권1호
• /
• pp.195-201
• /
• 2016

본 논문에서는 진폭-위상 복합비교 방향탐지 방식과 상관형 위상비교 방향탐지 방식의 방향탐지 정확도에 대해서 기술하였다. 복합비교 방식은 지향성 빔 특성을 갖는 스파이럴 안테나를 사용하고 상관형 방식은 블레이드 안테나를 사용하여 방위각 $360^{\circ}$를 동시에 탐지할 수 있는 균일원형배열(UCA: uniform circular array) 구조로 안테나를 배치하고 방위각의 방향탐지 정확도를 분석하였다. 3개의 안테나를 배치하는 경우 신호잡음비(SNR)가 20dB이고 파장에 대한 안테나 사이의 거리($D/{\lambda}$)가 0.5인 경우 복합비교 방식은 방향탐지 정확도가 $4.0^{\circ}$, 상관형 위상비교 방식은 방향탐지 정확도가 $1.8^{\circ}$로 나타나서 상관형 위상비교 방식이 정확도가 높은 것을 확인하였다.

• Educational Technology International
• /
• 제13권1호
• /
• pp.27-48
• /
• 2012

In this paper we are comparing how the OER (open educational resources) are developed in Higher Education in Finland and South Korea. We also present a comparison model for further studies. Essential findings based on our comparison are that in both countries there are many best practices of use of the OER and open learning. Open educational resources have great potential and their use can ensure quality teaching and learning. The activity has not inspired the great mass of higher education teachers in Finland and Korea. Traditionally, a teacher's job is working alone, and so a new operational culture is required. Our comparison indicates that numerous questions, fears and problems and cultural differences are also related to the thematic. There is an evident need for a new kind of strategic leadership, a new kind of teaching and learning culture and a doing together and production ideology for the method to spread. Based on our study the following interlinked elements of OER seem to be pivotal: changes to pedagogies, technology and operational culture; educational policy intention; and attitude to culture. Lastly, comparison frame by OER practice model is developed.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제9권12호
• /
• pp.4912-4933
• /
• 2015

Information Centric Networking (ICN) has recently attracted great attention. It names the content decoupling from the location and introduces network caching, making the content to be cached anywhere within the network. The benefits of such design are obvious, however, many challenges still need to be solved. Among them, the local caching policy is widely discussed and it can be further divided into two parts, namely the cache permission policy and the cache replacement policy. The former is used to decide whether an incoming content should be cached while the latter is used to evict a cached content if required. The Internet is a user-oriented network and popular contents always have much more requests than unpopular ones. Caching such popular contents closer to the user's location can improve the network performance, and consequently, the local caching policy is required to identify popular contents. However, considering the line speed requirement of ICN routers, the local caching policy whose complexity is larger than O(1) cannot be applied. In terms of the replacement policy, Least Recently Used (LRU) is selected as the default one for ICN because of its low complexity, although its ability to identify the popular content is poor. Hence, the identification of popular contents should be completed by the cache permission policy. In this paper, a cache permission policy called Cache-Filter, whose complexity is O(1), is proposed, aiming to store popular contents closer to users. Cache-Filter takes the content popularity into account and achieves the goal through the collaboration of on-path nodes. Extensive simulations are conducted to evaluate the performance of Cache-Filter. Leave Copy Down (LCD), Move Copy Down (MCD), Betw, ProbCache, ProbCache⁺, Prob(p) and Probabilistic Caching with Secondary List (PCSL) are also implemented for comparison. The results show that Cache-Filter performs well. For example, in terms of the distance to access to contents, compared with Leave Copy Everywhere (LCE) used by Named Data Networking (NDN) as the permission policy, Cache-Filter saves over 17% number of hops.