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        검색결과 24

        1.
        2023.11 구독 인증기관·개인회원 무료
        As the demand for nuclear power increases as a means to achieve carbon neutrality, concerns about nuclear proliferation have also grown. Consequently, significant researches have conducted to enhance nuclear non-proliferation resistance. Among these research, nuclear material attractiveness is a methodology used to evaluate how appealing a particular material is for potential use in nuclear weapons, based on the characteristics of that material. Existing nuclear material attractiveness assessments focused on materials like U, Pu, and TRU, which could be directly used in the production of nuclear weapons. However, these assessments did not consider how the properties of nuclear materials change throughout the nuclear fuel cycle, with each facility process. This study assumed a scenario of the nuclear fuel cycle of graphite reduction reactors and analyzed including enrichment facilities and PUREX. This study used the FOM (Figure-Of-Merit) method developed by LANL (Los Alamos National Laboratory) for evaluating the nuclear material attractiveness. The FOM formula consists of three parameters such as critical mass, heat content, and dose The critical mass of targe materials and the dose evaluation were conducted using the Monte Carlo N-Particle code. The heat content was calculated using the ORIGEN code embedded in the Scale code. In particular, if U-238 is dominant in the facility’s materials, such as mining and refining facilities, and critical mass evaluation is unpractical. Therefore, 1SQ (Significant Quantity) of that uranium was assumed as the critical mass value for the FOM evaluation, even though 1SQ is not identical to the critical mass As a result of this study, the attractiveness of Pu produced by PUREX among all nuclear fuel cycle facilities was 2.7616, which was the most attractive to be diverted to nuclear weapons. Through this study, it was shown that the proliferation risk of the nuclear facilities in the nuclear fuel cycle and risk of diversion among those facilities.
        2.
        2023.07 구독 인증기관 무료, 개인회원 유료
        The present study is designed to assess the ethical-moral effectiveness of three levels of AI implementations in the hospitality industry, which include mechanical AI for transactional services (automated service), thinking AI for functional services (algorithms search), and feeling AI for hedonic services (biometric sensors) when compared to consumers’ interactions with human. AI service robots are ethically challenging in use and morally controversial in its acceptance of labor replacement in hospitality contexts. In the hospitality industry, service robots have been rapidly adopted replacing frontline human services (Park et al., 2021). Service robots refer to “system-based autonomous and adaptable interfaces that interact, communicate and deliver service to an organization’s customers” (Wirtz et al., 2018, p.909). On the one hand, the applications of artificial intelligence (AI)-based service robots are promising in this field owing to remarkable accuracy in error reduction, portion control, and cost control in service operation and delivery (Berezina et al., 2019). However, on the other hand, there has been a debate on ethical and moral principles and values regarding service robots replacing human labor (Cowls et al., 2021). Nevertheless, restaurants’ adoption of service robots seems inevitable in the current marketplace as labor shortages and rising wages have challenged them to invest in automation (Tanzi, 2021). While prior research focused on the benefits of AI-based service offerings (e.g., Cristou et al., 2023; Huang & Rust, 2021; Park et al., 2021), this study explored the extent to which AI-based service robots are accepted by consumers without rising concern about service robots replacing human labors. To this end, we adopted Huang and Rust’s framework that identifies three levels of AI applications: mechanical, thinking, and feeling AIs. Mechanical AIs refer to the automation of repetitive and routine tasks (e.g., self-service technologies); thinking AIs facilitate rational decision-making based on data processing (e.g., conversational intelligent systems such as Siri); feeling AIs are able to interact with human emotions (e.g., humanlike robots that respond to human emotions such as Sophia). Further, we adopted the construal level theory (Trope & Liberman, 2003) to examine how different levels of AIs’ service capabilities influence the way that people think about AI-based service robots. In brief, this study demonstrated how different levels of AI benefits influence consumers’ moral concerns about AI-based service robotization’s replacement of human labor and social acceptance.
        4,000원
        3.
        2023.05 구독 인증기관·개인회원 무료
        Milling facilities, which belong to the front end of the nuclear fuel cycle, are essential steps for utilizing uranium in nuclear power generation. These milling facilities currently provide the International Atomic Energy Agency (IAEA) with the location and annual production capacity of the facility through the Additional Protocol (AP, INFCIRC/540) and grant IAEA inspectors on-site sampling authority to apply safeguards to the facility. However, since milling facilities process a large amount of nuclear material and the product uranium ore concentrate (UOC) is bulk material, the absence of accounting for the facility could pose a potential risk of nuclear proliferation. Therefore, this study proposes technical approach that can be utilized for safeguards in milling facilities. Since the half-life of uranium isotopes is much longer than that of its daughter, they reach the secular equilibrium condition. However, after milling process, the fresh tailing showed the break of that secular equilibrium. As time goes on, they newly reach another secular equilibrium condition. Based on this observation, this study discussed the feasibility of the ratio method in safeguards purpose. The scenario applied in this study was 1% of uranium mill tailing. It was observed that the U-238/Th-234 and U- 238/Pa-234m ratios in fresh milling tails varied as a function of time after discharging, particularly during the first one year. This change can be worked as a significant signature in terms of safeguards. In conclusion, the ratio method in mill tails could be applicable for safeguards of nuclear milling facility.
        4.
        2023.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        지구의 약 2/3를 차지하는 바다는 수억 종 유기체의 터전이며 이산화탄소를 흡수하며 기후변화 완화에 중요한 역할을 한다. 또한 바다는 해양자원을 제공 하고 무역의 중요한 교통로 역할을 한다. 그러나 우리 삶과 매우 밀접한 관계 가 있는 해양이 플라스틱으로 인해 파괴되고 있다. 매일 800만 개의 쓰레기가 바다로 유입되어 다양한 해양 생물이 쓰레기에 얽히거나 쓰레기를 섭취함으로 써 직접적인 영향을 받고 있다. 이처럼 해양환경에 부정적 영향을 미치는 해양 플라스틱에 대응하기 위해 2022년 3월 나이로비에서 열린 유엔환경총회 (UNEA)에서는 해양 플라스틱을 직접적으로 규제하는 법적 구속력을 지닌 국 제조약을 제정하기로 합의하였다. 이는 해양 플라스틱으로 인해 날로 심각해지 고 있는 해양환경에 매우 긍정적이라 할 수 있다. 육지를 기반으로 한 해양오 염으로부터 해양환경을 보호하기 위한 국제사회의 노력은 수 세기 동안 연성법의 형태로 발전되어 왔다. 이런 연성법은 새로 제정될 해양 플라스틱 조약에 분명 제시하는 시사점이 있을 것이다. 그러므로 본 논문에서는 연성법의 내용 을 교리적 법률연구를 통해 살펴보고, 이를 통해 새로운 국제조약에 필수적으 로 포함되어야 할 규정에 대해 제안하고자 한다.
        8,400원
        8.
        2022.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Traditional tie-dyeing is widely implemented in the clothing handicraft culture in China, South Korea, and Japan. Since it was developed 2,000 years ago, it has become a popular method of fabric making in the world and is highly respected by fashion designers. Based on the existing traditional tie-dyeing methods, this study conducted specific research on the 3D printing technology of the SLS laser method and the micro tool design application method of the clamp-dyeing process. Through the experimental methods of this study, it proposes to use the “7000 Nylon” material, which is commonly used in 3D printing, to develop a new clamp-dyeing tool. This new tool can be widely used in the clamp-dyeing of fabrics, such as cotton, hemp, silk, and some chemical fibers. The applied method and principle can be consistent with the traditional clamp-dyeing method. Therefore, the innovation of tie-dyeing technology is the best protection measure for the development and inheritance of traditional fabric making. The continuation of artistic life needs originality, which is also the best response to market competition. At the same time, this new design of the clamp-dyeing tool has the characteristics of novelty, innovation, and rich changes, which aligns with the new fashion demands of current fabric design.
        4,200원
        9.
        2019.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        민속문화는 예이츠에게 큰 의미가 있다. 그는 슬라고와 골웨이 현 지역의 야담, 민속, 및 민요를 수집하여 민속집을 간행했다. 원시민속문화와 창조적 작품으로서 예이츠의 민속집은 그가 국민시인으로 성장하는 창의적 작가이면서 독창적인 인속학자인 사실을 보여준다. 따라서 우리는 그 근본과 원인을 오컬티즘으로 돌린 수 있다. 그가 재생시키려고 한 민속전통은 그의 시와 시학의 불가분의 부분이 되며, 이로써 엘리트 앙글로 아이리쉬 계층과 카톨릭 농민들을 위한 신비주의적이고 보편적인 문학을 만들고, 이로써 중교적 정치적 갈등을 풀고 문화의 통합을 달성한다.
        4,500원
        10.
        2018.07 구독 인증기관·개인회원 무료
        How the destination image is presented in terms of the content and the selected media is known to have a considerable influence on consumers. In the current study, we examined the effect of destination images of Japanese hot spring hotels through photographic images taken by actual hotel guests on intended customer engagement behaviors (CEB) and their evoked conceptualization of the hotels. By showing photographic images of two types of hot spring hotels (traditional/contemporary) to participants from the United States (Phase 1, n=154) and Japan (Phase 2, n=677), we found that the image of traditional hot spring hotels induced higher evaluations and stronger CEB. When participants were clustered based on their travel motivations, we also found that, in both inbound and domestic markets, more engaged tourists gave higher evaluations and stronger CEB. The results suggest that the relationship among key constructs tested in this study validates the conceptual perspective on the theory application of destination image and CEB to hotel operations. From a practical perspective, hotel managers should carefully reconsider the primary drivers that attract tourists to visit the site and stay at their hotel. In addition, when developing promotional materials, managers should also consider key features in the photographic image to create a desirable destination image to attract tourists to visit and recommend the property to others.
        11.
        2018.07 구독 인증기관 무료, 개인회원 유료
        We examined whether hybrid consumers exist in the commodity food market by comparing food products in general, fresh pork and precooked pork patties using an online questionnaire (N=200). The same consumers changed their selection criteria depending on the type of commodity food product they were considering, reflecting hybrid consumer attitudes.
        4,000원
        12.
        2018.07 구독 인증기관 무료, 개인회원 유료
        This study examined discrepancies in the brand image of a Japanese frozen food company perceived by the company’s employees and its consumers. Using a hypothesized model leading to brand loyalty, structural differences between the company’s employees’ (internal) and consumers’ (external) brand images were revealed: the two images did not structurally match.
        4,000원
        13.
        2018.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 논문은 엑프라시스에 이론에 근거하여, 예이츠가 어떻게 자신의 후기시에 그리스와 비잔티움의 조각의 미학과 다양한 형식을 녹여내는지 논의한다. 예이츠는 상반의 시학에 조각적 특징을 사용하는데, 모순을 찾고 모순을 해결하기 위한 여러 가지 생각과 방법을 제시하고, 예술과 영원성에 대한 개념을 만든다. 예술적 형식을 통해서 예이츠는 시에서 인생과 역사의 모순을 화합시킴으로써 존재의 통일을 달성한다.
        4,800원
        14.
        2016.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 논문은, 예이츠의 시, 산문, 자서선, 편지에 흩어진 증거와 여러 엑프 라시스 이론에 근거, 예이츠의 청금석 이 어떻게 중국고전시와 풍경화, 특히 도교에 서 보이는 중국전통미학을 반영하는 지 논의한다. 예이츠는 이질적인 중국문화와 대화 하는 매체로서 중국고전시와 풍경화를 사용하는데, 이로써 서양의 딜레마에서 벗어나 는 길을 모색하고자 한다.
        5,500원
        15.
        2014.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        We apply differential affine velocity estimator (DAVE) to the Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager (HMI) 12-min line-of-sight magnetograms, and separately cal- culate the injected magnetic helicity for the leading and the following polarities of nine emerging bipolar active regions (ARs). Comparing magnetic helicity ux of the leading polarity with the following polarity, we nd that six ARs studied in this paper have the following polarity that injected more magnetic helicity ux than that of the leading polarity. We also measure the mean area of each polarity in all the nine ARs, and nd that the compact polarity tend to possess more magnetic helicity ux than the fragmented one. Our results con rm the previous studies on asymmetry of magnetic helicity that emerging bipolar ARs have a polarity preference in injecting magnetic helicity. Based on the changes of unsigned magnetic ux, we divide the emergence process into two evolutionary stages: (1) an increasing stage before the peak ux and (2) a constant or decreasing stage after the peak ux. Obvious changes on magnetic helicity ux can be seen during transition from one stage to another. Seven ARs have one or both polarity that changed the sign of magnetic helicity ux. Additionally, the prevailing polarity of the two ARs, which injects more magnetic helicity, changes form the following polarity to the leading one.
        4,000원
        17.
        2006.04 구독 인증기관·개인회원 무료
        This paper described the preparation method for composing high-grade synthetic diamond by water atomizing using FeNi30 powder catalyst. The objective of this article is about powder making process using super high water atomizing in the atmosphere of inert gas, and then corroded the powder with a corrosion inhibitor. Finally, FeNi30 catalyst powder with lower oxygen content and good sphericity is produced. The experiment of making diamonds by using cubic press and the performance of the diamonds are also discussed.
        18.
        2020.09 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        The relationship between education and work is of the greatest concern to individuals and society because they are the key drivers of growth and development. In the context of Industry 4.0, labor and educators are facing the challenges of big changes in the workplace. How to prepare undergraduate students for the world of employment has become the most important mission of higher education providers. This paper explored the competency gap in the labor market in Vietnam from the perspective of employees who have been dissatisfied with the current status. First, a qualitative method with the Delphi technique was applied to confirm this consensus in an employees’ competency model. Then, the satisfaction level for each competency criterion was explored by applying the advance quantitative method, namely, best non-fuzzy performance approach. Lifelong learning was ranked first, followed by creativity and innovation, foreign languages, expertise and digitalization, adaptability, and finally, organizing and managing ability. Critical thinking and problem-solving were perceived to have the biggest gap. The order of competency satisfaction is useful in explaining the mismatch between education quality and labor market demand. The findings provide valuable guidelines for education managers who seek to bridge the competency gap and improve education quality.
        19.
        2020.09 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        The paper empirically examines the bank-specific determinants of loan growth in the Vietnamese banking system for the period from 2007 to 2019. We approach the CAMELS framework and employ the dynamic panel regression to determine the effects of each CAMELS factor on bank lending. To ensure the robustness of results, we also use alternative definitions of the variables and different specifications with and without full sets of CAMELS components. With these settings, we display multiple important results. (i) We find that a large capital buffer tends to boost bank lending expansion faster. (ii) High asset quality might positively contribute to high loan growth; in other words, banks subject to high credit risk are discouraged from making loans. (iii) Less efficiently managed banks are more likely to adopt an aggressive lending strategy, highlighting the moral hazard incentives of Vietnamese banks. (iv) More profitable banks with excellent competitive advantages could expand their lending activities to a larger extent. (v) Liquidity is positively related to the loan growth of banks. (vi) Perceived interest rate risk tends to suppress loan growth since interest-rate-sensitive banks might be concerned about the adverse effects of unpredictable adverse changes in interest rates in the future.
        20.
        2020.09 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        The study empirically examines the effects of loan portfolio diversification on bank risk and return in the nascent banking market of Vietnam. Loan portfolio diversification is captured through the Hirschman-Herfindahl index and the Shannon Entropy with sectoral exposures. We access each bank’s financial reports to collect the required data, especially the breakdown of sectoral loan portfolios, thus constituting a unique dataset. To compute bank return, we use the traditional accounting indicators, including return-on-assets, return-on-equity, and net-interest margin. For bank risk, we utilize the loan-loss provisions and non-performing loans relative to gross customer loans. Using a sample of 30 commercial banks over the period from 2008 to 2019 and the system generalized method of moments estimator for the dynamic panel, we indicate the downsides of portfolio diversification. Concretely, we observe that all diversification measures exhibit significantly negative signs in all regressions across different bank return proxies. At the same time, the estimates display the significant and positive impact of diversification on the non-performing loan ratio. Hence, sectoral loan portfolio diversification significantly hampers bank performance in both aspects of lower return and higher credit risk. The results are robust across a rich set of bank performance and portfolio diversification measures.
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