• Journal of Multimedia Information System
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• 제4권4호
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• pp.263-270
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• 2017

Various security threats exist in the smart grid environment due to the fact that information and communication technology are grafted onto an existing power grid. In particular, smart metering data exposes a variety of information such as users' life patterns and devices in use, and thereby serious infringement on personal information may occur. Therefore, we are in a situation where a de-identification algorithm suitable for metering data is required. Hence, this paper proposes a new de-identification method for metering data. The proposed method processes time information and numerical information as de-identification data, respectively, so that pattern information cannot be analyzed by the data. In addition, such a method has an advantage that a query such as a direct range search and aggregation processing in a database can be performed even in a de-identified state for statistical processing and availability.

• 제어로봇시스템학회논문지
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• 제3권3호
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• pp.318-322
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• 1997

A prototype of combustion zone monitoring system as been developed and installed into tuyeres of the blast furnace. The system consists of CCD(charge coupled device) cameras, sonic flow meters, an image processor and a personal computer. The personal computer collects raceway luminance data and operational data from the image processor that is connected to the color CCD camera from the blast furnace process computer, respectively. In addition, the sonic flow meters supply coal injection rate data to the personal computer. Then, the personal computer evaluates the combustion conditions with the raceway inspection algorithm. This integrated monitoring system allows us to detect abnormal raceway conditions and the clogging status of coal injection pipe. The image processing techniques of the system enable us to effectively monitor unburnt coal sticking to tuyere tip and injection lance wear conditions. Such a developed system ensures rapid and precise raceway inspection. The image processing capability of the system has helped operator to early detect both the unburnt coal sticking problem and the errosion problem of injection lance. Furthermore, the system could control the abnormal raceway condition based the the analysis results obtained from combustion monitoring.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 춘계학술대회
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• pp.750-753
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• 2017

최근 스마트폰, SNS, 사물인터넷이 확산되면서 생겨나는 빅데이타의 처리와 활용이 ICT 분야의 새로운 성장 동력으로 부상하고 있다. 하지만 이러한 빅데이터의 활용을 위해서는 개인정보 비식별화가 이루어져야한다. 비식별화는 개인의 데이터가 특정인과 연결되지 않도록 데이터 셋으로부터 식별정보를 제거하는 것으로 정보를 수집, 처리, 보관 혹은 배포하는데 있어 발생할 수 있는 개인정보노출의 위험을 줄이며 그 정보를 활용하고 공유하는데 그 목적을 두고 있다. 비식별화된 정보는 또한 재식별화되어 개인정보보호의 논란이 되고 있지만 빅데이터등의 개인정보가 비식별 처리되어 활용되는 사례는 점차 증가하고 있다. 또한 많은 비식별화 가이드라인의 등장과 함께 개인정보 비식별화 방법이 제시되고 있다. 따라서 본 연구에서는 빅데이타 비식별화 과정과 사후관리를 서술, 비식별화 방법을 비교분석하고 비식별화와 개인정보보호 관련 이슈와 해결과제를 제시한다.

• 오토저널
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• 제11권6호
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• pp.89-96
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• 1989

Engine analyzer is developed with the aids of personal computer, A/D converter, interfacing signal transducer and data processing computer programs. The objective of this development are that it should firstly be produced at the resonable low price compared with imported one taking advantage of using existing personal computer and printer, and it should also give good quality of performance. For the attainment of this objective, A/D converter should have been developed to meet the price limit of the equipment. The experiment is performed in a 4 cycle 4 cylinder gasoline engine by this analyzer, and all the information which are necessary for the combustion analysis can be obtained through the processing of the pressure data that are stored in the computer. These are pressure-volume curve, pressure-crank angle curve, the rate of pressure rise and heat release versus crank angle curve etc. With this developed experimental system of resonable price, it will be considered that more easy way of engine data pick-up and processing is possible.

• 융합보안논문지
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• 제12권2호
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• pp.13-21
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• 2012

경비업체는 다른 모든 기업조직과 마찬가지로 조직 구성원들의 잠재적 능력을 최대한 발휘하여 조직의 목표와 개인의 목표를 달성할 수 있도록 인적자원을 관리하고 있다. 특히 경비업은 고객의 생명 및 신체에 대한 위해, 재산에 대한 침해 등을 경계하고 방지하는 업무를 수행하기 때문에 그 업무를 담당하고 있는 경비요원의 능력과 자질이 무엇보다 중요하다. 따라서 민간경비 서비스를 제공하는 경비요원들이 어떤 교육을 받고 어떤 서비스를 제공하느냐는 바로 고객의 생명과 신체와 재산에 직접적인 영향을 미치기 때문에 경비원의 법정교육 등은 매우 중요하며 나아가 직 간접적으로 민간경비산업에 영향을 미치는 것이다. 이러한 문제의식 하에서 본 연구는 경비원 법정교육의 변천과정을 살펴보고 나아가 현행 경비원 법정교육제도를 분석하여 문제점을 도출한 후 이에 대한 발전방안을 제시하는 것이 목적이다.

• 한국해양공학회지
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• 제10권4호
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• pp.160-165
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• 1996

This paper introduces a sea environmental monitoring system for measuring pH,DO, level and temperature. This system is developed using a personal computer(PC) and multiple single board computers. A PC communicates with the single board computers by awireless communication method and transfers data to another personal computer for processing data by a modem. The values of pH,Do,level and temperature, which are basic components to estimate sea environment, are real-timely processed in the single board computer at each stations, and transferred to the monitoring PC. These data are graphically shown on the PC monitor and logged on the data processing system in the form of file. Using the wire and wireless communication system, user can constantly analyze the acquired data and detect the sea contamination.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권12호
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• pp.4062-4080
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• 2022

COVID-19, a highly infectious disease, has affected the globe tremendously since its outbreak during late 2019 in Wuhan, China. In order to respond to the pandemic, governments around the world introduced a variety of public health measures including contact-tracing, a method to identify individuals who may have come into contact with a confirmed COVID-19 patient, which usually leads to quarantine of certain individuals. Like many other governments, the South Korean health authorities adopted public health measures using latest data technologies. Key data technology-based quarantine measures include:(1) Electronic Entry Log; (2) Self-check App; and (3) COVID-19 Wristband, and heavily relied on individual's personal information for contact-tracing and self-isolation. In fact, during the early stages of the pandemic, South Korea's strategy proved to be highly effective in containing the spread of coronavirus while other countries suffered significantly from the surge of COVID-19 patients. However, while the South Korean COVID-19 policy was hailed as a success, it must be noted that the government achieved this by collecting and processing a wide range of personal information. In collecting and processing personal information, the data minimum principle - one of the widely recognized common data principles between different data protection laws - should be applied. Public health measures have no exceptions, and it is even more crucial when government activities are involved. In this study, we provide an analysis of how the governments around the world reacted to the COVID-19 pandemic and evaluate whether the South Korean government's digital quarantine measures ensured the protection of its citizen's right to privacy.

• 한국IT서비스학회지
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• 제15권4호
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• pp.41-62
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• 2016

In Internet of Things (IoT) era, more diverse types of information are collected and the environment of information usage, distribution, and processing is changing. Recently, there have been a growing number of cases involving breach and infringement of personal information in IoT services, for examples, including data breach incidents of Web cam service or drone and hacking cases of smart connected car or individual monitoring service. With the evolution of IoT, concerns on personal information protection has become a crucial issue and thus the risk analysis and management method of personal information should be systematically prepared. This study shows risk factors in IoT regarding possible breach of personal information and infringement of privacy. We propose "a risk analysis framework of protecting personal information in IoT environments" consisting of asset (personal information-type and sensitivity) subject to risk, threats of infringement (device, network, and server points), and social impact caused from the privacy incident. To verify this proposed framework, we conducted risk analysis of IoT services (smart communication device, connected car, smart healthcare, smart home, and smart infra) using this framework. Based on the analysis results, we identified the level of risk to personal information in IoT services and suggested measures to protect personal information and appropriately use it.

• Journal of Information Processing Systems
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• 제10권3호
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• pp.395-411
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• 2014

Temporal medical data is often collected during patient treatments that require personal analysis. Each observation recorded in the temporal medical data is associated with measurements and time treatments. A major problem in the analysis of temporal medical data are the missing values that are caused, for example, by patients dropping out of a study before completion. Therefore, the imputation of missing data is an important step during pre-processing and can provide useful information before the data is mined. For each patient and each variable, this imputation replaces the missing data with a value drawn from an estimated distribution of that variable. In this paper, we propose a new method, called Newton's finite divided difference polynomial interpolation with condition order degree, for dealing with missing values in temporal medical data related to obesity. We compared the new imputation method with three existing subspace estimation techniques, including the k-nearest neighbor, local least squares, and natural cubic spline approaches. The performance of each approach was then evaluated by using the normalized root mean square error and the statistically significant test results. The experimental results have demonstrated that the proposed method provides the best fit with the smallest error and is more accurate than the other methods.

• 한국정보통신학회논문지
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• 제18권3호
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• pp.576-585
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• 2014

대량의 개인정보가 수집되어 활용됨에 따라 개인정보 유출 등의 보안 문제가 발생하고 있다. 이에 최근에는 수집된 개인정보를 암호화 하여 저장하고 활용하는 방법이 사용되고 있다. 본 논문에서는 기존에 수집된 대량의 개인정보를 단시간에 암호화하기 위한 방법으로 맵리듀스 기반의 분산 암호화 처리 방법을 제안하고, 시스템을 설계하고 구현하였다. 또한 맵리듀스 기반의 분산 암호화 처리 방법의 성능을 검증을 위해 테스트 환경을 구축하여 비교 실험을 진행하였다. 실험 결과 토큰 서버의 암호화 처리 시간이 순차처리 대비 평균 시간 효율이 약 15.3% 정도 향상 하였으며, 병렬처리대비 약 3.13%정도 향상되는 것을 확인 하였다.