• 한국IT서비스학회지
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• 제22권3호
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• pp.29-47
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• 2023

With the recent advancement of information and communication technologies such as artificial intelligence, big data, cloud computing, and 5G, data is being produced and digitized in unprecedented amounts. As a result, data has emerged as a critical resource for the future economy, and overseas countries have been revising laws for data protection and utilization. In Korea, the 'Data 3 Act' was revised in 2020 to introduce institutional measures that classify personal information, pseudonymized information, and anonymous information for research, statistics, and preservation of public records. Among them, it is expected to increase the added value of data by combining pseudonymized personal information, and to this end, "the Expert Data Combination Agency" and "the Expert Data Agency" (hereinafter referred to as the Expert Data Processing Agency) system were introduced. In comparison to these domestic systems, we would like to analyze similar overseas systems, and it was recently confirmed that the Vermont government in the United States enacted the first "Data Broker Act" in the United States as a measure to protect personal information held by data brokers. In this study, we aim to compare and analyze the roles and functions of the "Expert Data Processing Agency" and "Data Broker," and to identify differences in designated standards, security measures, etc., in order to present ways to contribute to the activation of the data economy and enhance information protection.

• 정보보호학회논문지
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• 제33권1호
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• pp.99-116
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• 2023

데이터, AI 등 정보기술 기반의 초연결 사회인 4차 산업혁명 시대의 데이터 중요성이 증가하고 있으며 이에 발맞추어 정부도 데이터경제 활성화를 위한 법률 제정 및 개정이 활발히 진행되고 있으나 규제 법률인 개인정보보법과 데이터 활성화 법률(데이터기반행정 활성화에 관한 법률, 데이터 산업진흥 및 이용촉진에 관한 기본법, 산업디지털 전환 촉진법) 간 충돌 가능성, 결합전문기관 유형별 입장차, 데이터전문기관과 결합전문기관의 수행 범위 등 데이터산업 활성화의 발목을 잡거나 잘못된 방향 설정 등의 문제를 예방하고 개선할 필요가 있다. 이에 결합전문기관의 역할 및 현황, 활용 사례를 분석하고 현장의견을 청취하여 데이터경제 활성화를 위한 결합전문기관 역할 확대 방안과 개선방안을 도출하여 소개하고자 합니다.

• 한국CDE학회논문집
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• 제21권1호
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• pp.51-60
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• 2016

The arrangement design of a submarine has been performed based on data of parent ships and experts' experiences. To support such a task, it is necessary to accumulate and use systematically the data, and to optimize the task. The expert system for the first issue and the optimization method for the latter issue can be used. At this time, a suitable data structure to share the data on the arrangement design of the submarine should be used. In this study, the data structure named an arrangement template model (ATM) is proposed. To check the applicability of the ATM, a prototype program which consists of the expert system and the optimization method is developed. Finally, the developed program is applied to a small submarine of US Navy. As a result, it is confirmed that the ATM can be used to share the data between the expert system and the optimization method.

• Nuclear Engineering and Technology
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• 제49권6호
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• pp.1226-1233
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• 2017

Measurements of the isotopic contents of spent nuclear fuel provide experimental data that are a prerequisite for validating computer codes and nuclear data for many spent fuel applications. Under the auspices of the Organisation for Economic Co-operation and Development (OECD) Nuclear Energy Agency (NEA) and guidance of the Expert Group on Assay Data of Spent Nuclear Fuel of the NEA Working Party on Nuclear Criticality Safety, a new database of expanded spent fuel isotopic compositions has been compiled. The database, Spent Fuel Compositions (SFCOMPO) 2.0, includes measured data for more than 750 fuel samples acquired from 44 different reactors and representing eight different reactor technologies. Measurements for more than 90 isotopes are included. This new database provides data essential for establishing the reliability of code systems for inventory predictions, but it also has broader potential application to nuclear data evaluation. The database, together with adjoint based sensitivity and uncertainty tools for transmutation systems developed to quantify the importance of nuclear data on nuclide concentrations, are described.

• Nuclear Engineering and Technology
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• 제46권3호
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• pp.353-362
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• 2014

The effects of nuclear data uncertainties are studied on a typical PWR fuel assembly model in the framework of the OECD Nuclear Energy Agency UAM (Uncertainty Analysis in Modeling) expert working group. The "Fast Total Monte Carlo" method is applied on a model for the Monte Carlo transport and burnup code SERPENT. Uncertainties on $k_{\infty}$, reaction rates, two-group cross sections, inventory and local pin power density during burnup are obtained, due to transport cross sections for the actinides and fission products, fission yields and thermal scattering data.

• 한국항공우주학회지
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• 제46권9호
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• pp.767-773
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• 2018

최신 항공기에는 항공기의 건전성을 확인하기 위한 진동데이터 수집 장비가 장착되는 경우가 많다. 이러한 장비를 통해 수집되는 진동 데이터의 분석은 항공기 설계에 정통한 전문가에 의존하는 것이 일반적이며, 설계 분석을 통해 일반 사용자를 위한 대표적이고 객관적인 결함식별 기준을 제시하는 것은 쉽지 않다. 본 논문에서 우리는 기존의 항공기 설계분석 방법이 아닌, 운용 중 수집되는 방대한 양의 진동 데이터에 주성분 분석을 적용하는 방식으로 기동 및 결함유형 식별이 가능한지를 확인하였다. 이를 위해 국내 육군에서 실운용중인 항공기의 진동 데이터를 실측하여 기동 및 결함 유형별로 분류하였고, 분류된 데이터에 주성분 분석 기법을 적용하였다. 그 결과 설계 분석을 하지 않고도 운용 데이터 분석만을 통하여 일반 사용자들을 위한 기동/결함유형 식별 도구의 개발이 가능함이 확인되었다.

• 한국산학기술학회논문지
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• 제17권2호
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• pp.315-324
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• 2016

본 연구는 대학의 특허경영전문가 활용이 기술이전 성과에 미치는 영향을 조사함으로써 향후 대학이 기술전담조직의 전문성강화의 방향성을 제시하고자 하였다. 특허경영전문가 파견에 관한 세부적인 효과파악을 위하여 세부적으로 특허경영전문가 파견유무, 특허경영전문가 파견기간, 특허경영전문가 파견연도로 세분화하여 연구를 진행하였다. 분석을 위하여, 대학정보공시센터의 "대학알리미" 자료와 한국지식재산전략원의 "특허경영전문가파견사업" 자료를 활용하였으며, 총 110개 4년제 대학을 중심으로 2008년부터 2013년간의 데이터를 활용하였다. 분석결과 첫째, 대학의 특허경영전문가활용은 활용 대학이 미활용대학 대비 기술이전 및 기술이전수입이 높은 것으로 나타나 대학의 기술이전 활성화를 이루는데 있어 특허경영전문가 활용이 중요한 역할을 했다는 것을 알 수 있었다. 둘째, 대학의 특허경영전문가활용기간이 길수록 기술이전 및 기술이전수입이 높아지는 것으로 나타나 사업의 효과를 더욱 극대화하기 위하여 기간을 연장할 수 있는 방안마련이 필요하다는 방향성을 도출할 수 있었다. 셋째, 특허경영전문가 파견연도(해당연도)에는 기술이전 및 기술이전이 높아지지 않은 반면, 파견연도 전후로 기술이전성과가 나타나 특허경영전문가 파견이 즉각적인 효과라기 보다는 후속적인 효과로 해석할 수 있었다. 그렇기 때문에 파견사업의 효과를 단순히 짧은기간에 한정시키지 말고, 장기적인 관점에서 기술이전전담조직을 활성화시켜야 할 것이다.

• 시스템엔지니어링학술지
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• 제15권1호
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• pp.16-24
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• 2019

In this study, an improved method of setting the RAM goals for surveillance system using OMS/MP and field operations data of similar systems is suggested and a case study of surveillance system A is given. Newly suggested methods for setting the RAM goals consist of the procedures such as On/Off time analysis of configuration equipment based on OMS/MP, field operations data analysis of similar systems, adjustment of preventive maintenance time, the number of corrective maintenances, and TALDT in wartime, introducing new subsystem to reliability structure of surveillance system, and reflecting expert's opinion. A case study of surveillance system A shows that newly suggested method in this study for setting the RAM goals is reasonably acceptable and practically applicable to other similar systems.

• 한국안전학회지
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• 제36권2호
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• pp.49-57
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• 2021

In the case of military supplies, any potential failure and causes of failures must be considered. This study is aimed at examining the failure modes of a rotorcraft landing system to identify the priority items. Failure mode and effects analysis (FMEA) is applied to the rotorcraft landing system. In general, the FMEA is used to evaluate the reliability in engineering fields. Three elements, specifically, the severity, occurrence, and detectability are used to evaluate the failure modes. The risk priority number (RPN) can be obtained by multiplying the scores or the risk levels pertaining to severity, occurrence, and detectability. In this study, different weights of the three elements are considered for the RPN assessment to implement the FMEA. Furthermore, the FMEA is implemented using a fuzzy rule base, similarity aggregation model (SAM), and grey theory model (GTM) to perform a comparative analysis. The same input data are used for all models to enable a fair comparison. The FMEA is applied to military supplies by considering methodological issues. In general, the fuzzy theory is based on a hypothesis regarding the likelihood of the conversion of the crisp value to the fuzzy input. Fuzzy FMEA is the basic method to obtain the fuzzy RPN. The three elements of the FMEA are used as five linguistic terms. The membership functions as triangular fuzzy sets are the simplest models defined by the three elements. In addition, a fuzzy set is described using a membership function mapping the elements to the intervals 0 and 1. The fuzzy rule base is designed to identify the failure modes according to the expert knowledge. The IF-THEN criterion of the fuzzy rule base is formulated to convert a fuzzy input into a fuzzy output. The total number of rules is 125 in the fuzzy rule base. The SAM expresses the judgment corresponding to the individual experiences of the experts performing FMEA as weights. Implementing the SAM is of significance when operating fuzzy sets regarding the expert opinion and can confirm the concurrence of expert opinion. The GTM can perform defuzzification to obtain a crisp value from a fuzzy membership function and determine the priorities by considering the degree of relation and the form of a matrix and weights for the severity, occurrence, and detectability. The proposed models prioritize the failure modes of the rotorcraft landing system. The conventional FMEA and fuzzy rule base can set the same priorities. SAM and GTM can set different priorities with objectivity through weight setting.

• The Journal of Asian Finance, Economics and Business
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• 제5권2호
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• pp.139-149
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• 2018

In the contemporary era of smart tourism, travelers face more accommodation options than ever before. The rapid expansions of alternative accommodation sector are partially owing to the growth of electronic commerce and the rise of online intermediary platforms. Online travel agencies serve as a critical distribution channel for tourism sectors, and the significance is further increased for small and micro entrepreneurs whose direct communication channels are scarce. Considering the holistic process of customer experience started with a third-party online intermediary, this study explores basic and extended attributes of small and medium-sized alternative accommodation where the comparative value is created. In order to achieve the objective, a research design was developed to synthesize the qualitative evidence. The synthesis encompasses both theoretical and practical perspectives, from a systematic review and opinions of academic professionals to an in-depth interview with an industry expert and the current practices of online travel agencies. This study suggests that the sources of value creation for alternative accommodation are not always consistent with those of the traditional. Accounting for the temporal and spatial dynamics in customer experience, the findings of this study provide insights on the comparative value of alternative accommodation, to both academic and industry audiences.