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        검색결과 43

        1.
        2023.11 구독 인증기관·개인회원 무료
        APro, a process-based total system performance assessment (TSPA) tool for a geological disposal system, has a framework for simulating the radionuclide transport affected by thermal, hydraulic, mechanical or geochemical changes occurred in the disposal system. APro aims to be applied for the TSPA to long-term (> 100,000) evolution scenarios in real-world repository having more than 10,000 boreholes. In this large-scale TSPA, it is important not only to develop a high-performance numerical approach, but also to apply an efficient post-processing approach to massive spatiotemporal data. The post-processing refers to validating numerical analysis results, analyzing and evaluating target systems through data processing or visualization. Since APro uses COMSOL interface, the postprocessing function in COMSOL can be used. However, when the data size increases due to largescale numerical analysis, the time for the COMSOL post-processing increases, resulting in a problem that the analysis and evaluation are not performed effectively. In this case, it is possible to extract necessary data using the COMSOL exporting function and importing it into an external postprocessing program for the analysis and evaluation. In this study, the efficiency of external post-processing with extracted data from COMSOL was reviewed. And, we derived a proper data extraction approach (format and structure) that can increase efficiency of external post-processing.
        10.
        2018.12 KCI 등재 구독 인증기관·개인회원 무료
        빅 데이터, 인공지능 등 발전된 정보통신기술 시대를 대비하기 위하여 개인정보의 활용이 절실한 지금, 엄격한 사전 동의 방식을 채택하고 있는 우리의 「개인정보 보호법」이 처리자의 활용 재량을 확대하는 방향으로 개정되어야 한다는 논의가 활발하다. 이런 맥락에서 등장한 것이 「개인정보 보호법」을 개정하여 유럽과 같이 개인정보 처리에 있어서 양립 가능성 개념을 도입하자는 논의이다. 최근의 「개인정보 보호법」의 개정안 중에는 개인정보의 수집·이용(제15조), 제3자 제공(제17조) 및 목적 외 이용·제공(제18조)에 양립가능성 개념을 도입하고 정보주체의 동의 없이도 처리가 가능하도록 예외를 인정하는 법안들이 등장하였다. 그 취지는 개인정보의 보호와 활용의 균형점을 찾는다는 의미에서 의의가 있다고 볼 수 있다. 그러나 양립 가능성을 도입하고 있는 「개인정보 보호법」 개정안들도 법 기술방식과 인정 범위에는 차이가 있다. 또한 ‘정당한 이익’의 개념과 혼재되어 사용되고 있기도 하다. 이는 「개인정보 보호법」과 GDPR에서의 개인정보 ‘처리’(processing)를 규정하는 방식이 서로 다르고, 양립 가능성을 우리의 언어로 법문화 하는 과정에서 기인한 차이라고 보인다. 이러한 차이점을 최대한 수렴하여 아래와 같이 개정 방안을 제안하고자 한다. ‘양립 가능성’은 개인정보의 최초 수집이 있고, 그 수집 목적과 다른 새로운 목적이 생겼을 때 양립 가능한지를 판단하는 제도이다. 따라서 「개인정보 보호법」에서의 처리 단계 중에서 ‘목적 외 이용·제공’을 규정하는 제18조에 개념을 도입하고, 양립 가능성 여부를 판단하는 기준도 같은 조문에서 규정하는 것이 바람직할 것으로 보인다. ‘양립 가능한’의 개념은 개정안에 ‘수집 목적과 관련성이 있다고 합리적으로 인정되는’으로 법문화 되었는데 이는 정당한 이익의 개념과 혼동을 줄 수 있으므로, ‘양립 가능한’으로 기술하되 개념의 유동성은 그 판단 기준을 제공함으로써 완화할 수 있을 것이다. 현행 「개인정보 보호법」에서도 통계작성 등 목적으로 ‘특정 개인을 알아볼 수 없는 형태’로 제공하는 것은 동의없이 목적 외로 이용 또는 제공이 가능하다. 그러나 특정 개인을 알아볼 수 없는 형태에 대하여 규정하고 있는 별도의 조항이 없다. 따라서 ‘특정 개인을 알아볼 수 없는 형태’를 ‘가명처리’ 개념으로 대체하고, 통계작성 등 목적 외 처리가 인정되는 경우라 하더라도 가명처리 등 안전조치를 의무화하는 병행 개정이 이루어져야 할 것이다.
        13.
        2017.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        To automate cooking processes, quantitative descriptions are needed on how quality parameters, such as texture change during heating. Understanding mechanical property changes in foods during thermal treatment due to changes in chemical composition or physical structure is important in the context of engineering models and in precise control of quality in general. Texture degradation of food materials has been studied widely and softening kinetic parameters have been reported in many studies. For a better understanding of kinetic parameters, applied kinetic models were investigated, then rate constants at 100°C and activation energy from previous kinetic studies were compared. The food materials are hardly classified into similar softening kinetics. The range of parameters is wide regardless of food types due to the complexity of food material, different testing methods, sample size, and geometry. Kinetic parameters are essential for optimal process design. For broad and reliable applications, kinetic parameters should be generated by a more consistent manner so that those of foods could be compared or grouped.
        4,000원
        15.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper provides an overview of the AKARI mission, which was the rst Japanese satellite dedicated to infrared astronomy. The AKARI satellite was launched in 2006, and performed both an all-sky survey and pointed observations during its 550 days in the He-cooled mission phases (Phases 1 and 2). After the He ran out, we continued near-infrared observations with mechanical cryocoolers (Phase 3). Due to a failure of its power supply, AKARI was turned o in 2011. The AKARI data are unique in terms of the observed wavelengths as well as the sky coverage, and provide a unique legacy resource for many astronomical studies. Since April 2013, a dedicated new team has been working to re ne the AKARI data processing. The goal of this activity is to provide processed datasets for most of the AKARI observations in a Science Ready form, so that more users can utilize the AKARI data in their astronomical research. The data to be released will include revised All-Sky Point Source Catalogues, All-Sky Image Maps, as well as high-sensitivity images and spectra obtained by pointed observations. We expect that the data will be made public by in the Spring of 2016.
        4,000원
        17.
        2015.03 구독 인증기관 무료, 개인회원 유료
        Numerous experiments have demonstrated that infrared thermographic methods are effective for detection of subsurface defects in the materials. The response of the material to the thermal stimulus is dependent on the existence of subsurface defects and their features. In order to obtain the information about defects, the material’s response to the thermal stimulus is studied. In this study, image processing was applied to infrared thermography images to detect defects in metals that were widely used in industrial fields. When analyzing experimental data from infrared thermographic testing, thermal images were often not appropriate. Thus, four point method was used for processing of every pixel of thermal images using MATLAB program for quantitative evaluation of defect detection and characterization which increased the infrared non-destructive testing capabilities since subtle defects signature became apparent..
        3,000원
        18.
        2008.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this paper, we introduce the performance evaluation and development of Raw VLBI Data Buffer(RVDB) system for the synchronized playback processing of observed data in Korea-Japan Joint VLBI Correlator(KJJVC). The high-speed correlation processing system is under development so that the radio data obtained with 8192 channels and 8 Gbps speed from 16 stations will be able to be processed. When the recorded data of each station are played to correlator, the time synchronization of each station is very important because the correlator should process the data obtained with same time and condition. There are many types of recorder systems in the East Asia VLBI Network (EAVN). Therefore it is required to prepare the special time synchronized playback processing system to synchronize the time tag of observed data. The developed RVDB system consists of Data Input Output(DIO), 10GbE switch, and Disk Data Buffer(DDB). It can record the data with maximum 2 Gbps speed, and can play back the data to correlator with nominal 2 Gbps speed. To enable to play back the data of different playback system to the correlator, we developed the high-speed time synchronized playback processing system. We carried out the experiments of playing back and correlation for gigabit correlator and VCS trial product so as to confirm the performance of developed time synchronized playback processing system. In case of online and offline playing back experiment for gigabit correlator, we confirmed that the online and offline correlation results were the same. In case of playing back experiment for VCS trial product, we verified that the wide band and narrow band correlation results were also the same. Through the playing back experiments of RVDB system, the effectiveness of developed RVDB system was verified. In this paper, the system design, construction and experimental results are shown briefly.
        5,100원
        19.
        2007.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        차량방호 안전시설에 대한 성능의 검증은 충돌시험의 가속도와 각속도 데이터를 사용하여 산정한 탑승자 안전지수를 평가하여 이루어진다. 탑승자 안전지수로는 THIV(Theoretical Head Impact Velocity), PHD(Post-impact Head Deceleration), ASI(Acceleration Severity Index), OIV(Occupant Impact Velocity)와 ORA(Occupant Ridedown Acceleration)가 있다. 탑승자 안전지수 계산에 상이한 데이터 처리과정과 수치절차의 적용이 가능하기 때문에 동일한 시험 데이터에 대하여 다양한 탑승자 안전지수값이 결정될 수 있어서 혼란이 초래되고 있는 실정이다. 이러한 문제를 해결하기 위하여 다양한 상세절차와 데이터 처리과정이 탑승자 안전지수에 미치는 영향을 조사하였다. 지침에 제시된 계측시간간격을 사용하여 차량충돌시험이 수행된다면 보간법과 수치적분방법은 THIV와 OIV 값에 영향을 크게 미치지 않았다. 그리고 PHD에 대한 10msec 이동평균방법과 데이터 처리과정의 영점보정은 탑승자 안전지수에 상당한 영향을 미치기 때문에 이에 관한 구체적인 방법이 지침에 규정되어야 한다.
        4,300원
        20.
        2007.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this paper, we introduce the performance test results of digital data processing system for KVN (Korean VLBI Network). The digital data processing system for KVN consists of DAS (Data Acquisition System) and high-speed recorder which called Mark5B system. DAS system performs the digitalization of analog radio signal through ADS-1000 gigabit sampler with 1 Gsps/2-bit and process the digital filtering of digital signal. Mark5B system records the output data of DFB (Digital Filter Bank) with about 1 Gbps. In this paper, we carried out the preliminary evaluation experiments of the KVN digital data processing system connected between DAS system and Mark5B with VSI (VLBI Standard Interface) interface which is designed for compatible in each VLBI system. We first performed all of the KVN digital data processing system connected by VSI interface in the world. In factory inspection phase, we found that the DAS system has a memory read/write error in DSM (Digital Spectrometer) by analyzing the recorded data in Mark5B system. We confirmed that the DSM memory error has been correctly solved by comparing DSM results with Mark5B results. The effectiveness of KVN digital data processing system has been verified through the preliminary experiments such as data transmission, recording with VSI interface connection and data analysis between DSM and Mark5B system. In future work, we will perform the real astronomical observation by using the KVN 21m radio telescopes so as to verify its stability and performance.
        4,200원
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