• 한국병원경영학회지
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• 제20권2호
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• pp.28-38
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• 2015

This study was conducted by extending Ajzen's Theory of Planned Behavior(TPB) model in analyzing physician's observance behavior of National Health Insurance review standards. An extended TPB model was proposed by including 'background knowledge'and 'dorganizational commitment'in original model to predict physician's review standards observance behavior. Surveys for data collection were carried out on the physicians who were working in a general hospital, clinics, specialized hospitals, local medical centers and long term care hospitals located in Daegu and Kyoung-Buk province in Korea. Two hundreds twenty copies of questionnaires were distributed and 166 physicians responded. Data were analyzed using a structural equation model. The results show that an affirmative attitude and subjective norms have significant positive effects on physicians' behavior of observing review standards. However, the effect of perceived behavioral control on intention to behavior is not significant. The organizational commitment and background knowledge have a positive effect on the intention of observance of review standards. In conclusion, because physician's observance behaviors are affected by background knowledge and organizational commitment as well as attitudes, subjective norms, hospital managements should establish a communication system to share information on the review standards among physicians and provide appropriate measures to increase physician's organizational commitment.

• 한국지하수토양환경학회지:지하수토양환경
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• 제26권6호
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• pp.1-17
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• 2021

Self-potential (SP) surveys measure naturally occurring differences in electrical potential in the absence of artificial sources and have been applied to various fields since the first application in mineral explorations. Among various causes of SP occurrences, streaming potential is generated by the flow of groundwater, and makes SP surveys suitable for the exploration of groundwater table fluctuation, fractures, sinkholes and landslide occurrences. Recently, there has been many studies that applied SP surveys to monitor water leakage through dikes and embankments. In this review paper, we first review the characteristics and theoretical backgrounds of streaming potential in saturated or unsaturated porous media to introduce it in the embankment among various application field. After the review of the background theory, we review the past cases of field SP surveys on dikes and embankments and also the characteristics of field streaming potential data in the surveys. Further, by analyzing past studies of qualitative as well as quantitative interpretation of SP survey data, we show the possibility of quantitative interpretation of streaming potential data obtained on dikes and embankments. Consequently, it is hope that this review paper helps researches on SP surveys on dikes and embankments, and provides basis for interpretation methods of the SP data to identify leaked area and further leakage rate (or permeability).

• 한국컴퓨터정보학회논문지
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• 제28권7호
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• pp.19-27
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• 2023

소셜 리뷰를 수집하는 과정에서 주어진 검색어와 상관없는 노이즈 리뷰가 검색 결과에 다수 포함될 수 있으며, 이들을 필터링하기 위해 기계 학습이 이용될 수 있다. 그러나 분석하고자 하는 대상의 리뷰 수가 부족한 경우, 학습 데이터 부족으로 인한 정확도 저하 문제가 발생할 수 있다. 본 논문에서는 리뷰 수가 부족한 플레이스를 대상으로 노이즈 리뷰 필터링의 정확도를 높이기 위한 지도 학습 방법을 소개한다. 제안 방법에서는 개별 플레이스 단위로 학습을 수행하지 않고, 특성이 유사한 여러 플레이스를 그룹으로 묶어 학습을 수행한다. 학습을 통해 얻은 분류기는 그룹에 속한 임의의 플레이스에 공통으로 적용함으로써 학습 데이터 부족 문제를 해결하고자 하였다. 제안 방법의 검증을 위해, LSTM과 BERT를 이용하여 노이즈 리뷰 필터링 모델을 구현하고, 온라인에서 수집된 실제 데이터를 활용한 실험을 통해 필터링 정확도를 체크하였다. 실험 결과, 제안 방법의 정확도는 평균 92.4% 수준이었으며, 리뷰 수가 100개 미만인 플레이스를 대상으로 할 경우 87.5%의 정확도를 제공하였다.

• International Journal of Safety
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• 제9권2호
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• pp.22-28
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• 2010

This paper describes a web-based design review system as a knowledge management system relating reliability and safety system design. Since people's consciousness for safety and security become sensitive and increases the need of establishing a proactive prevention method for internal failures and relating risks in products. It also means that prevailing tacit knowledge in retired workers, in order to transform them to be easily used to support new system development, become more important. When considering safety and reliability design, at least two data sheet are necessary; Failure Modes and Effects Analyses (FMEA) and Risk Assessment (RA). These two data are practically made separately. However, it includes the concerns that a risk by failures during long-term use may not be noticed. To overcome this insufficiency, a support tool for integrating reliability evaluation and risk assessment data simultaneously is expected to be revealed. The authors have then developed a web-based design review system for reliability and safety system design. The system include various profitable functions; making FMEA and RA sheet, retrieving past data sheet for engineering change management and new product development and web-based discussion to increase the efficiency of discussion. The system is applied to one practical development works in order to demonstrate its effectiveness that is to be made clear by interviewing user's qualitative comment.

• 보건행정학회지
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• 제24권2호
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• pp.120-127
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• 2014

Background: Since December 2010, online computerized prospective drug utilization review (pDUR) has been implemented in Korea. pDUR involves the review of each prescription before the medication is dispensed to the individual patient. The pDUR is performed electronically by Health Insurance Review & Assessment Service (HIRA), which is a Korean governmental agency, and then HIRA provides medical institutions and pharmacies with information that can be helpful to them in preventing potential drug problems such as drug/drug interactions or ingredient duplication. The aim of this study was to assess the impact of the Korean pDUR implementation on the proportion of drug-drug interactions (DDIs) using claims data from HIRA. Methods: A before-after comparison of the prevalence of DDIs between prescription was conducted, using HIRA administrative claims data of medical institution from January 2010 to December 2011. The analysis unit was the prescription issued and pairs before and after. The main outcome measures were the proportion of DDIs within- (control group) or between- physician encounters. To examine the difference, a paired t-test was applied. Results: We found that DDIs proportion between prescription decreased significantly (t=3.04, p=0.0026) after the implementation of pDUR, whereas there is no significant reduction within prescription (t=1.15, p=0.2518). With respect to the prevalence of DDIs between drug groups, the most dramatic reduction was occurred between 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors and anti-fungal agents. Conclusion: It seems effective that giving a direct feedback to prescribers by a prospective DUR. Further research is needed to assess the impact of DUR to final outcomes such as hospitalization.

• Journal of Chest Surgery
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• 제49권sup1호
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• pp.14-19
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• 2016

Background: This study uses the relevance index to understand the condition of regional medical service use for cardiovascular surgery and to identify the medical service use imbalance between regions. Methods: This study calculated the relevance index of 16 metropolitan cities and provinces using resident registration address data from the Ministry of Government Administration and Home Affairs and the 2010-2014 health insurance, medical care assistance, and medical benefits claims data from the Health Insurance Review and Assessment Service. We identified developments over the 5-year time period and analyzed the level of regional imbalance regarding cardiovascular surgery through the relative comparison of relevance indexes between cardiovascular and other types of surgery. Results: The relevance index was high in large cities such as Seoul, Daegu, and Gwangju, but low in regions that were geographically far from the capital area, such as the Gangwon and Jeju areas. Relevance indexes also fell as the years passed. Cardiovascular surgery has a relatively low relevance index compared to key types of surgery of other fields, such as neurosurgery and colorectal surgery. Conclusion: This study identified medical service use imbalance between regions for cardiovascular surgery. Results of this study demonstrate the need for political intervention to enhance the accessibility of necessary special treatment, such as cardiovascular surgery.

• 한국농촌건축학회논문집
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• 제24권3호
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• pp.39-46
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• 2022

This study aims to derive basic living service facility items in rural areas and construct related spatial data. To do this, a literature review on the laws and systems related to the residential environment and services in rural areas, rural spatial planning, and the 'Rural Convention' strategic plan reports for the Jeolla and Gyeongsang Region in 2021 was conducted. Primary data collection and review on the list of basic living service items in rural areas derived from the analysis were conducted. After data collection, 12 sectors and 44 types of rural basic living service items were derived; the data selection was carried out based on the clarity of the subject of data management, whether it was established nationwide, whether it was disclosed and provided, whether it was periodically updated, and whether it was an underlying law. Afterwards, data on the derived rural basic living service items were constructed. Afterwards, spatial data on the derived rural basic living service items were constructed. Because open data provided through various institutions were employed, data structure unification such as data attribute values and code names was needed, and abnormal data such as address errors and omissions were refined. After that, the data provided in text form was converted into spatial data through geocoding, and through comparative review of the distribution status of the converted data and the provided address, spatial data related to rural basic living services were finally constructed for about 540,000 cases. Finally, implications for data construction for diagnosing rural living areas were derived through the data collection and construction process. The derived implications include data unification, data update system establishment, the establishment of attribute values necessary for rural living area diagnosis and spatial planning, data establishment plan for facilities that provide various services, rural living area analysis method, and diagnostic index development. This study is meaningful in that it laid the foundation for data-based rural area diagnosis and rural planning, by selecting the basic rural living service items, and constructing spatial data on the selected items.

• 정보과학회 컴퓨팅의 실제 논문지
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• 제22권5호
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• pp.209-217
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• 2016

스마트폰 보급의 확산으로 상품 구매 시 웹 사이트 및 SNS를 이용하여 상품 리뷰를 참고하는 소비자들이 증가하고 있다. 그러나 이러한 방식은 소비자가 직접 리뷰 데이터를 찾아 읽어야하기 때문에 시간이 오래 걸릴 뿐만 아니라 가공되지 않은 데이터가 줄 수 있는 정보는 한정적이다. 따라서 상품의 리뷰를 수집하여 기본 정보뿐만 아니라 리뷰 문장의 감정 분석을 통한 가공된 정보를 제공하는 시스템이 필요하다. 하지만 현재 이러한 상품 리뷰 분석 정보를 제공하는 시스템의 대다수는 상품의 분류와 상품의 속성을 반영하는 것이 부족하다. 본 논문에서는 상품의 분류와 속성을 반영하는 리뷰 감정 분석을 통한 전자 상거래 상품 분석 및 평가를 제공하는 시스템을 설계 및 구현하였다. 이를 도서 상품에 적용하여 구축한 시스템을 통해 소비자가 방대한 양의 상품의 리뷰 데이터를 분석할 필요 없이 상품의 속성 및 분류에 따라 가공된 분석 결과를 시각적으로 빠르게 제공받을 수 있음을 보였다.

• Journal of Preventive Medicine and Public Health
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• 제54권1호
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• pp.17-21
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• 2021

In 2020, the coronavirus disease 2019 (COVID-19) pandemic has caused unprecedented disruptions to global health systems. The Korea has taken full-fledged actions against this novel infectious disease, swiftly implementing a testing-tracing-treatment strategy. New obligations have therefore been given to the Health Insurance Review and Assessment Service (HIRA) to devote the utmost effort towards tackling this global health crisis. Thanks to the universal national health insurance and state-of-the-art information communications technology (ICT) of the Korea, HIRA has conducted far-reaching countermeasures to detect and treat cases early, prevent the spread of COVID-19, respond quickly to surging demand for the healthcare services, and translate evidence into policy. Three main factors have enabled HIRA to undertake pandemic control preemptively and systematically: nationwide data aggregated from all healthcare providers and patients, pre-existing ICT network systems, and real-time data exchanges. HIRA has maximized the use of data and pre-existing network systems to conduct rapid and responsive measures in a centralized way, both of which have been the most critical tactics and strategies used by the Korean healthcare system. In the face of new obligations, our promise is to strive for a more responsive and resilient health system during this prolonged crisis.

• 디지털융복합연구
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• 제19권8호
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• pp.33-42
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• 2021

스마트폰 기반의 관광 플랫폼들이 활성화되면서 리뷰 데이터를 활용한 정책 수립 및 서비스 고도화가 다양한 분야에서 이루어지고 있다. 관광 리뷰 데이터를 활용한 선행연구들의 경우 국내 관광객 중심의 연구가 대다수 수행되었으며, 외국인 관광객 연구의 경우 일부 언어로 수집된 데이터와 텍스트 마이닝 기법에 한정하여 연구가 수행되었다. 이에 본 연구에서는 온라인 리뷰 사이트를 통해 '대구 명소' 키워드를 지정하여 외국인들이 작성한 리뷰 데이터 3,515건을 수집하였다. 그리고 LDA 기반의 토픽모델링을 수행하여 관광 토픽을 도출하였으며, 각 토픽별 전역 및 국지적 공간 분석을 수행한 점이 선행연구와 차별성이라 할 수 있다. 분석 결과 전역적 공간 자기상관이 존재하며, 외국인들이 주로 방문하는 관광지들이 국지적으로 결집되어 있음을 확인하였다. 또한 대다수 토픽에서 중구를 중심으로 핫스팟이 도출되었으며, 분석 결과를 바탕으로 지자체 외국인 관광정책 수립 및 토픽모델링 기반의 공간분석 연구의 기초연구로 활용되길 기대하며, 본 연구의 한계점 또한 제시하였다.