• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권2호
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• pp.1020-1042
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• 2019

Reversible data hiding in encrypted images (RDHEI) provides some real-time cloud applications; i.e. the cloud, acting as a data-hider, automatically embeds timestamp in the encrypted image uploaded by a content owner. Many existing methods of RDHEI only satisfy user privacy in which the data-hider does not know the original image, but leaks owner privacy in which the receiver can obtains the original image by decryption and extraction. In the literature, the method of Zhang et al. is the one providing weak content-owner privacy in which the content-owner and data-hider have to share a data-hiding key. In this paper, we take care of the stronger notion, called strong content-owner privacy, and achieve it by presenting a new reversible data hiding in encrypted images. In the proposed method, image decryption and message extraction are separately controlled by different types of keys, and thus such functionalities are decoupled to solve the privacy problem. At the technique level, the original image is segmented along a Hilbert filling curve. To keep image privacy, segments are transformed into an encrypted image by using random permutation. The encrypted image does not reveal significant information about the original one. Data embedment can be realized by using pixel histogram-style hiding, since this property, can be preserved before or after encryption. The proposed method is a modular method to compile some specific reversible data hiding to those in encrypted image with content owner privacy. Finally, our experimental results show that the image quality is 50.85dB when the averaged payload is 0.12bpp.

• 한방재활의학과학회지
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• 제31권4호
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• pp.87-103
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• 2021

Objectives The purpose of this study was to investigate the development process and describe the diagnosis methods, theories and treatments of Mongolian traditional medicine and Korean traditional medicine through literature records and prior studies. Methods Literature records and previous studies on traditional medicine of both countries were collected through various sites in Mongolia (Esan, Mongoliajol, Kok, Yumpu, Scribd, Science and Technology Foundation [STF]) and Korea (Koreanstudies Information Service System [KISS], Korea Institute of Science and Technology Information [KISTI], National Digital Science Library [NDSL], Research Information Sharing Service [RISS], Oriental Medicine Advanced Searching Integrated System [OASIS]). Also the English database was searched through PubMed. In the case of Mongolian traditional medicine, medical books published in Mongolia were mainly referenced and used for research. Results Studying the development process, basic concepts and the system of diagnosis and treatment of the two traditional medicine, several commonalities and differences were revealed. Conclusions This study showed that the scope of diagnosis methods between Mongolian and Korean traditional medicine were slightly different, and that the medical terminology for the diagnosis method had slightly different contents from each other. Although there were many similarities in treatments of Mongolian and Korean traditional medicine, the Chuna therapy is found in Korean traditional medicine only. The basic theories constituting traditional medicine were the same, but the five-element theory used by the two countries differs in the following two factors. Mongolia uses elements of air and space as the theory of five elements, while Korea uses elements of wood and iron.

• Journal of Preventive Medicine and Public Health
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• 제54권2호
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• pp.119-128
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• 2021

Objectives: Ongoing, proactive, planned, and patient-centered diabetes education is the cornerstone of care for all persons with diabetes. Thus, the aim of this study was to explore the information needs of type 2 diabetes mellitus patients receiving insulin treatment in North-East Ethiopia. Methods: The study was conducted from July 2019 to January 2020 using a qualitative enquiry (phenomenological approach) with purposive sampling. Face-to-face in-depth interviews were used to collect data until reaching theoretical saturation. The participants were type 2 diabetes patients receiving insulin treatment. They were identified from the diabetes patients' registration book at the diabetes clinic and interviewed at their appointment time, and were selected to include wide variations in terms of socio-demographic characteristics. Twenty-four participants (11 men and 13 women), with a median age of 57 years, were interviewed. The data were organized using QDA Miner Lite version 2.0.7 and analyzed thematically using narrative strategies. Results: Most participants had not heard of diabetes before their diagnosis. They had limited knowledge of diabetes, but ascribed different connotations for it in the local language (Amharic). The needs reflections of patients were categorized into diabetes education and participants' recommendations. Diabetes education was totally absent at hospitals, and patients received education primarily from the Ethiopian Diabetes Association and broadcast and digital media. Thus, the major concern of patients was the availability of diabetes education programs at health institutions. Conclusions: Patients' main concern was the absence of routine diabetes education, which necessitates urgent action to implement diabetes education programs, especially at health institutions.

• 한국엔터테인먼트산업학회논문지
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• 제15권4호
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• pp.279-286
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• 2021

본 연구에서는 코로나19 이후 교육현장에 본격적으로 투입되고 있는 에듀테크의 모습을 4차산업혁명의 도래와 더불어 살펴보았다. 4차산업혁명 시대에 ICT를 적극적으로 활용한 스마트 스티의 인프라, 데이터, 서비스는 스마트교육을 구현하는 주축이 되었다. 특히 스마트교육은 이러닝, 스마트러닝, 에듀테크를 통해 구현되고 있으며, 이러한 기저에는 인터넷과 컴퓨터의 확대 및 활용, 스마트 기기의 보급, 빅데이터를 활용한 소프트웨어 기반을 통해 가능하게 되었다. 이를 토대로 에듀테크는 인공지능을 기반으로 학습자 개별 맞춤형, 안전한 생활을 위한 방역안전망, 학습안전망, 돌봄안전망을 구축을 통해 구현되고 있는 것을 확인할 수 있었다. 마지막으로 이와 같은 빅데이터를 활용한 에듀테크 교육이 모두를 위한 담론이 되기 위해서는 에듀테크의 활용과 적용에 있어 인공지능과 윤리에 대한 숙고가 필요하다.

• 한국응용과학기술학회지
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• 제38권6호
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• pp.1433-1444
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• 2021

본 연구는 코로나 시대이후로 가속화된 뷰티분야의 4차 산업들과 융합으로 산업에서 요구되는 실무능력을 교육하기 위한 교육과정 개발을 목적으로 진행되었다. 여러 문헌의 탐색적 조사와 전문가의견을 수렴한 결과 뷰티산업은 앞으로 단일 아이템 또는 서비스 제공이 아닌 의료, 바이오, ICT, 인공지능 기술 등이 결합된 개인맞춤형 서비스 제공 산업으로 분야가 확장될 것으로 분석되었다. 분석 내용을 바탕으로 전통적인 뷰티산업에서 요구하는 기본 직무 능력 외에 갖추어야 할 디지털 활용능력을 추가하여 교육과정을 구성하고 과목을 도출하였다. 코로나 이후의 시대는 4차 산업혁명을 기반으로 다양한 산업의 변화를 가져올 것이며 이러한 변화에 대응하여 뷰티산업의 발전과 지속가능성을 위한 인재 개발을 위해 대학에서는 산업의 변화에 항상 주목해야 할 것이다.

• 한국산업정보학회논문지
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• 제15권3호
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• pp.23-32
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• 2010

U-헬스케어는 인간에게 많은 편의를 제공하고 건강을 지켜준다. 하지만 시설중심의 의료 환경이 환자 중심의 의료 환경으로 변함에 따라 다양한 문제점들이 발생되고 있다. 이 문제점들은 제도적인 문제부터 기술적인 문제, 생산자의 문제, 사용자의 문제에 이르기까지 다양한 원인에 의해 발생된다. 연구자는 이 문제들 가운데 사용자로부터 기인한 문제, 그 중에서도 특히 노인환자 또는 노인이 환자의 보호자인 경우에 관심을 가졌다. 주요 연구내용은 U-헬스케어 관련 기기들의 HMI 숙달훈련과 응급상황대처능력 훈련을 위한 학습용 기능성콘텐츠의 설계방향이다. 이는 노인의 인지심리학과 노인운동반응에 관한 연구로부터 출발하여 다양한 디지털 콘텐츠 형식들의 특성을 연관 짓는 과정을 거쳤다. 연구 결과는 가파른 성장세를 보일 노령인구와 그에 따른 U-헬스케어 산업분야에서 쓰임새를 가질 것으로 기대한다.

• 한국인터넷방송통신학회논문지
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• 제23권4호
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• pp.127-135
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• 2023

요즘, 우울증 및 스트레스로 자살하는 환자가 급증하고 있다. 뿐만 아니라, 스트레스 및 우울증이 오래 지속되면, 심장병 및 뇌 질환, 고혈압 등을 유발할 수 있는 위험한 요소로 질환이다. 그러나, 아무리 현대 의학이 발전하였지만, 우울증 및 심장병 환자에게는 특별한 약이나 치료제가 없는 매우 난감한 상황이다. 그러므로, 세계 여러 나라에서, 심전도 및 산소포화도, 뇌파 분석 기능을 이용해서 우울증 위험환자 및 자살 위험환자를 조기에 판단하는 연구가 활발하게 이루어지고 있다. 본 논문에서는, 이러한 문제점을 분석하기 위해서, 심장병 가설데이터를 수립해서, 심장병 위험환자를 판단하는 컴퓨터 모의실험을 수행하였다. 특히, 심장병 발생 예측을 을 10% 이상 향상하게 시키기 위해서, 퍼지 추론을 사용하는 모의실험을 수행하였다.

• 보건행정학회지
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• 제33권1호
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• pp.40-54
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• 2023

Background: Based on the increase in the needs for convalescent rehabilitation medical services in Korea, this study aims to calculate the needs for rehabilitation services and examine its determinants for 229 regions. Methods: Claim data from the Health Insurance Review and Assessment Service were used to estimate patients who need to receive rehabilitation services, and data from various sources were also used for analysis. The number of cases and incidence rates of hospitalization related to convalescent rehabilitation were calculated to estimate the needs for services by region, and the results were visualized via a map. Multivariate regression and fixed effects regression using panel data were performed to identify the determinants of regional variation of the incidence rate. Results: First, the incidence rate of rural areas such as Jeolla-do, Gyeongsang-do, and Chungcheong-do was higher than urban areas (metropolitan cities). Second, the population, proportion of the elder, medical aid recipients, financial independence, traffic deaths, smoking, diabetes rate, and medical infrastructure correlated significantly with the incidence rate. Third, 'rho' values which mean the fraction of variance due to individual terms in panel data regression models were 0.965 and 0.976, respectively. Conclusion: The incidence rate of hospitalizations was correlated with most independent variables in this study and there is a gap between urban and rural areas. These regional disparities are fixed in our society. An improved regional convalescent rehabilitation system is suggested to cover the entire area including rural areas with a high rate of aging.

• 보건행정학회지
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• 제33권1호
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• pp.55-64
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• 2023

Background: Despite the various activities of the regional public hospitals, discussions are being made as to whether or not to continue due to the issue of financial deficit. Therefore, the main factors affecting the fiscal deficit were analyzed with 10-year data. Methods: This study is a panel analysis that analyzed the characteristics of 34 regional public hospitals and influencing factors on medical benefits for 10 years from 2010 to 2019. First, we analyze the determinants of medically vulnerable areas set by the government, analyze the trend of medical profit per 100 beds and medical profit rate from 2010 to 2019, and identify the factors that affect them. Results: Differences in medical profit per 100 beds and medical profit-to-medical profit rate were caused by market share representing regional characteristics, and both indicators improved as the number of outpatients increased. The important influencing variables are the number of doctors and nurses, and both indicators improve when there are specialists, but medical benefits decrease as the number of doctors increases when judged by the number of people per 100 beds. In addition, the number of nurses per 100 beds does not contribute to medical profit and has a negative effect on the medical profit ratio. Conclusion: As only regional characteristics were taken into account for medically vulnerable areas, operational characteristics need to be considered. The greatest impact on the finances of local medical centers is the proper staffing of doctors and nurses, and their efficient arrangement is the most important factor in financial stability.

• 융합정보논문지
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• 제12권2호
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• pp.184-191
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• 2022

본 연구는 자동차보험 이용환자들의 효율적 관리방안을 모색하는데 필요한 기초정보를 제공하고자 보건의료빅데이터개방시스템에 등록된 2016년부터 2020년까지 5개년 자동차보험 진료비 심사자료를 대상으로 분석하였다. 분석결과, 자동차보험 입원진료비 내역 구성비율 1순위는 상급종합병원은 처치 및 수술료, 종합병원·병원·의원은 입원료, 한방의료기관(한방병원, 한의원)은 처치 및 수술료, 치과병원은 처치 및 수술료 이었다. 외래진료비 내역 구성비율 1순위는 양방의료기관(상급종합병원, 종합병원, 병원, 의원)은 진찰료, 한방의료기관(한방병원, 한의원)과 치과의료기관(치과병원, 치과의원)은 처치 및 수술료 이었다. 자동차보험 입원 건당 진료비에는 투약료, 마취료, 특수장비 비율이 영향요인이었으며, 외래 건당 진료비에는 이학요법료 비율이 영향요인으로 확인되었다.