• Journal of Biosystems Engineering
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• 제38권1호
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• pp.25-32
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• 2013

Purpose: The objective of this study is to develop a data middleware for u-IT convergence in agricultural environment monitoring, which can support non-standard data interfaces and solve the compatibility problems of heterogenous sensor networks. Methods: Six factors with three different interfaces were chosen as target data among the environmental monitoring factors for crop cultivation. PostgresSQL and PostGIS were used for database and the data middleware was implemented by Python programming language. Based on hierarchical model design and key-value type table design, the data middleware was developed. For evaluation, 2,000 records of each data access interface were prepared. Results: Their execution times of File I/O interface, SQL interface and HTTP interface were 0.00951 s/record, 0.01967 s/record and 0.0401 s/record respectively. And there was no data loss. Conclusions: The data middleware integrated three heterogenous sensor networks with different data access interfaces.

• 응용통계연구
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• 제34권5호
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• pp.849-861
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• 2021

본 논문은 확률적 자료연계 방법의 기본 개념과 이론적 모형을 소개하고, 실제 통계청 데이터를 사용하여 확률적 자료연계가 진행되는 과정과 원리를 보여준다. 먼저 확률적 자료연계와 결정적 자료연계와의 차이를 간단히 알아보고, 확률적 자료연계 방법론의 토대가 되는 Fellegi-Sunter 모형의 기본 구성과 관련된 모수(m-확률, u-확률), 가중치, 매치여부 판정기준에 대해 기술한다. 그리고 통계청 등록센서스와 인구총조사 자료를 이용하여 그 모형을 적용한 자료연계가 이루어지는 구체적인 과정에 대해 설명하고, 이를 통해 얻어진 연계 결과의 정확성을 살펴본다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2009년도 정보 및 제어 심포지움 논문집
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• pp.402-404
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• 2009

The development of health information technology enables people to access, view and acquire personal health record. But still, there have been a number of obstacles such as the absence of the standard to realize the ideal Personal Health Record(PHR) system. In this study, we proposed the service model that serves periodic Health Record Summary which is made by a medical specialist to people who are in the busy lives. Healthcare data from EMR in a hospital including people generate themselves at home is sent to a physician to make a medical opinion, and then it is changed into Health Level 7 Continuity of Care Document(CCD) format for interoperability. After a physician writes his opinion about patient's health condition, it will send to people by email. People who receive the health record summary data by email can save them into a USB device to view own PHR and medical comments of a physician through a computer. It will help people managing their own health condition with an opinion of a medical specialist.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권9호
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• pp.4624-4640
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• 2017

This paper mainly presents a secure and efficient e-Medical Record System via searchable encryption scheme from asymmetric pairings, which could provide privacy data search and encrypt function for patients and doctors in public platform. The core technique of this system is an extension public key encryption system with keyword search, which the server could test whether or not the files stored in platform contain the keyword without leaking the information about the encrypted file. Compared with former e-medical record systems, the system proposed here has several superior features: (1)Users could search the data stored in cloud server contains some keywords without leaking anything about the origin data. (2) We apply asymmetric pairings to achieve shorter key size scheme in the standard model, and adopt the dual system encryption technique to reduce the scheme's secure problem to the hard Symmetric External Diffie-Hellman assumption, which could against the variety of attacks in the future complex network environment. (3) In the last of paper, we analyze the scheme's efficiency and point out that our scheme is more efficient and secure than some other classical searchable encryption models.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 추계학술대회
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• pp.357-360
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• 2011

네트�p 중심전(NCW) 및 정보화 시대에 발맞추어 군에서도 고성능 작전콘솔을 활용하여 다양하고 복잡한 메시지 교환 및 운용병간 음성통화를 통해 신속하게 상태 및 정보를 공유함으로써 임무수행의 효율을 극대화하는 추세로 발전하고 있다. 작전 또는 훈련종료 후 임무 분석 및 검토를 통해 추후 새로운 작전계획을 세울 목적으로 작전상황을 기록하는 장비가 최근 개발되어 운용되고 있다. 기록장비의 기록 방식은 전시영상을 직접 기록하는 방식과 연동되는 메시지를 기록하는 방식으로 나뉜다. 본 연구는 데이터기반 기록방식의 재생준비시간 개선을 위한 새로운 기록방식과 개선방안을 제안한다.

• Journal of applied mathematics & informatics
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• 제29권5_6호
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• pp.1435-1451
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• 2011

In this paper the estimation of the parameters as well as survival and hazard functions are presented for the two-parameter Pareto distribution by using Bayesian and non-Bayesian approaches under upper record values. Maximum likelihood estimation (MLE) and interval estimation are derived for the parameters. Bayes estimators of reliability performances are obtained under symmetric (Squared error) and asymmetric (Linex and general entropy (GE)) losses, when two parameters have discrete and continuous priors, respectively. Finally, two numerical examples with real data set and simulated data, are presented to illustrate the proposed method. An algorithm is introduced to generate records data, then a simulation study is performed and different estimates results are compared.

• Journal of Information Processing Systems
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• 제16권3호
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• pp.572-587
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• 2020

Experience API provides a learner-centered model for learning data collection and learning process recording. In particular, it can record learning data from multiple data sources. Therefore, Experience API provides very good support for ubiquitous learning. In this paper, we put forward the architecture of ubiquitous learning system and the method of reading the learning record from the ubiquitous learning system. We analyze students' learning behavior from two aspects: horizontal and vertical, and give the analysis results. The system can provide personalized suggestions for learners according to the results of learning analysis. According to the feedback from learners, we can see that this u-learning system can greatly improve learning interest and quality of learners.

• 정보관리학회지
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• 제26권1호
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• pp.125-145
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• 2009

오늘날 이메일은 사회적으로 널리 사용되는 보편적인 통신수단이 되었다. 공공기관에서 기관 내 의견 교환은 물론 외국과의 교류와 통상문제, 타 기관이나 기업, 단체 등과의 관계에서 중요한 통신 수단으로 쓰이고 있다. 또한 전자 정부를 지향하는 추세에서 이메일은 국민과 접촉하는 일차적인 수단이 되고 있다. 그러나 우리나라는 아직 이메일을 공식적인 기록으로 인정하고 있지 않고 이메일 관리를 위한 어떤 지침도 제공하고 있지 않다. 이메일은 전자 기록의 한 형태이며 공공 업무를 위해 사용되었다면 기록으로서 획득되고 관리되어야 하고, 획득 관리하기 위해서는 필요한 메타데이터 요소를 규정하는 것이 필수적이다. 따라서 본고의 최종적인 목적은 이메일 기록의 획득 시 확보해야할 메타데이터 요소를 제안함으로써 우리나라 이메일 기록관리의 기초를 제공하는데 있다.

• 한국비블리아학회지
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• 제29권4호
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• pp.161-178
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• 2018

본 논문은 기록물관리 전문요원의 전문적 영향력이 기록관리 담당자들의 직무몰입과 직무만족에 어떠한 영향을 미치는지 조사하였다. 연구방법은 설문조사 방법을 사용하였으며 광주광역시 학교 기록관리 담당자들을 대상으로 2017년 9월부터 10월까지 설문조사를 실시하여 총 103명의 응답을 분석에 활용하였다. 분석 방법은 빈도분석, 요인분석, 신뢰도분석, 상관분석, 다중회귀분석, 독립표본 T검정, 일원배치분산분석을 사용하였다. 분석 결과 기록물관리 전문요원의 전문적 영향력 요인인 전문성, 영향력전술, 영향력요건 중 전문성과 영향력전술은 기록관리 담당자의 직무몰입과 직무만족에 영향을 미치는 것으로 나타났다. 연구 결과를 토대로 본 논문은 기록물관리 전문요원의 기록관리 직무교육 확대와 기록관리 담당자와의 소통을 제언하였다.

• Journal of Nutrition and Health
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• 제34권6호
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• pp.688-700
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• 2001

Nutrient intakes estimated using a 24-hr recall, a dirt record and a food frequency questionnaire(FFQ) were compared in a group of ninety-four elderly people(21 males, 73 females) in Cheongju, a city in Chung-Buk province. Mean intakes for energy, protein, Ca, p, Na, K thiamin and niacin obtained from the diet record were higher than those from the 24-hr recall. Mean intakes for energy, protein, Ca, P, Na, K thiamin, niacin and vitamin C from the FFQ were higher than those obtained from the 24-hr recall or the diet record. Correlation coefficients between the nutrient intake values from the 24-hr recall and those from the diet record ranged from 0.84 to 0.95 and were significantly correlated(p < 0.001). About 80% of the subjects in the lowest quintile by the 24-hr recall were also in the lowest two quintiles by the diet record. While the percentage fallen into the opposite category ranged from 0% to 15%. For most nutrients, at least 65% of the subjects when classified by the 24-hr recall fell into the same quintile when classified by the diet record, and the mean kappa value was 0.7. About 52% of the subjects in the lowest category by the 24-hr recall fell into the lowest two categories by FFQ. The mean percentage of the subjects in the lowest quintile by the diet record or in the lowest two quintiles by the FFQ was 51%. For most nutrients, at least 24% of each of the subjects when classified by both the 24-hr recall and the diet record fell into the same category when classified by the FFQ. The kappa values between the 24-hr recall or the diet recall and the FFQ were 0.17. These data indicate that in elderly subjects the 24-hr recall can provide very similar information to that obtained from the diet record but the FFQ can not provide good information if the right FFQ method is not used for only elderly subjects.