• Journal of the Optical Society of Korea
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• 제5권4호
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• pp.131-135
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• 2001

We report experiemtnal results demonstrating the electromagnetically induced transparency (EIT) in trapped Cs atoms. EIT occurs at the Λ-type configuration where the re0-pumping laser simultaneously plays a role as the coupling laser in the presence of a magneto-optical trapping and weak magnetic fields. Dependences of EIT signal on both the intensity and the detuning of the coupling laser were investigated. Linear absorption spectra for cold cesium atoms in the magneto-optical trap have been observed and shown the pronounced dispersion-like structure with sub-natural linewidth of 1 MHz due to the cooling laser.

• Nuclear Engineering and Technology
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• 제54권2호
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• pp.741-748
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• 2022

Policy literacy plays a critical role in enhancing deliberative communication among the public, policymakers, and experts. It also helps develop a positive view of policy by the public, which facilitates public acceptance. Despite its importance, however, policy literacy has received little attention in energy policy practice. Therefore, this study explores factors affecting the public's understanding and knowledge (i.e., policy literacy) of nuclear and new-renewable energy policies. Accordingly, we analyzed data from an online survey of 790 laypeople in Korea. Specifically, we examined the effects of trust, transparency, and policy public relations (PR) on the policy literacy of the public regarding the two alternative energy sources. The analysis revealed that people showed higher policy literacy about the alternative sources when provided with more transparent information and exposed to more policy PR activities. However, we found that trust in energy plant operators played a negligible role in improving policy literacy for both energy sources. Based on these findings, we developed some policy suggestions to secure the energy policy literacy of the public.

• Journal of the Optical Society of Korea
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• 제5권3호
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• pp.110-116
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• 2001

Recently observed dark resonance phenomena is solids are reviewed and discussed for potential applications to high-resolution coherence spectroscopy. in an inhomogeneously broadened system, a new type of high-resolution spectroscopy based on electromagnetically induced transparency is demonstrated.

• 한국전자거래학회지
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• 제18권2호
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• pp.279-299
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• 2013

고객 취향에 가장 적합한 제품을 선택하는 것은 전자상거래에서 중요한 문제이다. 전자상거래 그러나 온라인 추천시스템으로서 알려진 소셜 필터링은 전자상거래에서 기술적 접근이 활발히 연구되어왔다. 온라인 추천시스템은 사용자의 개인적 취향과 관련하여 적절한 제품을 필터링하여 제공함으로서 사용자의 의사결정 품질을 향상시키는 것에 목적을 두고 있으며 그 결과 사용자의 제품 탐색과 선택에 대한 지원이 가능하다. 그러나 대다수 추천시스템의 선행연구들은 추천 알고리즘의 정확성을 향상시키는 것에 집중해 왔으며 사용자 기반의 인터페이스나 사용자 관점의 사용방식에 대한 연구는 매우 적은 실정이다. 추천시스템의 추천 상황에 대한 시스템 투명성과 사용자의 추천에 대한 피드백을 통한 추천방식 개선을 통하여 본 연구는 사용자 관점의 추천시스템 활용에 대한 시스템 투명성과 피드백의 영향력을 파악하고자 하였다. 실험을 통한 연구 결과에 따라, 시스템 투명성과 사용자 피드백 모두 추천시스템에 대한 사용자의 인지된 신뢰, 프로세스 가치, 인지된 즐거움에 영향을 주는 것으로 나타났다. 특히, 인지된 신뢰, 프로세스 가치, 즐거움은 사용자가 추천시스템을 지속적으로 사용하기 위한 의도를 향상시키는 것으로 나타났다.

• Asia pacific journal of information systems
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• 제26권3호
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• pp.339-366
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• 2016

National and local governments around the world have been allowing access to administrative data to increase transparency, motivate civic engagement of citizens, and improve collaboration between the public and the government. This study reviews and classifies existing literature on open government data (OGD). To create a structure to organize the existing studies, the researchers devised a framework based on socio-technical theory and summarized the significance of studies along four major points: (1) readiness, (2) implementation, (3) emerging effects, and (4) actors of open data. Studies in OGD have been growing steadily in the recent years because of the rapid development of adoptable technologies that have enabled easier access to government data. Nonetheless, an examination of existing research not only shows a disparity in research and development of OGD across countries in the Open Government partnership program but also reveals pertinent issues that have arisen in different stages of the OGD initiative. The growing number of studies and expanding body of knowledge show the importance of organizing existing literature. This step is timely and significant to map out the current breadth and depth of OGD research. According to existing research, current open governments fall short in encouraging citizen participation and collaborations among citizens and the government. This study pointed out how studies on OGD actors might be the reason as well as the solution to existing findings. This paper aims to provide a framework for organizing OGD studies, present the status of OGD research, and provide recommendations on current gaps that must be addressed.

• International Journal of Internet, Broadcasting and Communication
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• 제13권1호
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• pp.123-133
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• 2021

We study confirmed the factors influencing the organizational culture(collective culture, development culture, rational culture, hierarchical culture) perceived by members of the organization and the manager's authentic leadership(self-awareness, balanced information processing, relational transparency, internalized moral perspective) on job crafting. In addition, the relationship between organizational culture and authentic leadership was empirically analyzed. In order to verify the hypothesis of the research model, the survey results of 269 parts were verified as follows using the statistical program of SPSS 24.0. First, the organizational cultures perceived by members of the organization, development culture and rational culture, showed positive (+) influence on job crafting. In other words, Hypothesis 1 established by the research model was partially adopted. Second, the group culture, development culture, and rational culture of organizational culture were statistically significant in the relationship between the hypothesis 2 organizational culture and authentic leadership. In other words, Hypothesis 2 was partially adopted. Third, the three hypotheses of authentic leadership (self-awareness, balanced information processing, relational transparency, and an internalized moral perspective) all showed positive (+) effects on job crafting. As a result of this study, it was possible to confirm the importance of the organizational culture that improves the job-crafting of the members of the organization and the strategic activation plan for authentic leadership. Therefore, the necessity of strategic human resource development for the development and application of programs to revitalize organizational culture and improve the manager's authentic leadership has emerged.

• Korean Chemical Engineering Research
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• 제60권1호
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• pp.132-138
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• 2022

본 연구에서는 광경화 3D 프린팅 방식인 SLA (Stereo Lithography Apparatus) 방식 출력물의 후처리 방법에 따른 표면 특성의 변화를 체계적으로 비교하고, 용도에 맞는 후처리 방법에 대한 정보를 제공하기 위한 기초 연구를 수행하였다. SLA 방식 출력물은 연마를 통해 표면의 불규칙한 미세구조를 규칙적으로 변화시켜 투명도를 일부 개선할 수는 있었으나, 유리와 같은 충분한 투명도를 확보하기는 어려웠다. 연마에 따른 접촉각 특성 변화는 연마 시간이 증가할 수록 그리고 사용된 사포의 입도가 작을 수록 다소 증가하는 경향을 보였으나 샘플 간 편차가 크고 평균 77~90°의 접촉각을 나타내어 대부분 통계적으로 유의미한 차이를 보이지는 않았다. 연마 이외 다양한 방법을 통한 표면처리 방법이 시도되었으며, 시판되는 차량용 흠집제거제나 실리콘 오일 등을 도포하여 쉽고 간단하게 투명도를 개선하는 것이 가능함을 확인하였다. 또한, 입도 사이즈를 줄이며 순차적으로 연마한 후 흠집제거제를 사용함으로써 유리와 같은 높은 투명도를 확보할 수 있는 방법을 제안하였다. 마지막으로 연마와 다양한 방법을 통해 표면처리를 하더라도 접촉각은 90° 이상을 확보하기 어려웠으며 소수성의 특성을 필요로 하는 경우, 본 연구에서 사용된 다양한 방법 외 소수성 코팅과 같은 추가적인 처리가 필요함을 확인하였다.

• 디지털산업정보학회논문지
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• 제9권4호
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• pp.267-279
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• 2013

To many, recent allegations of earnings management at Enron, coupled with similar ones at many other corporations, are a strong indication of a serious decay in business ethics. Nevertheless, the field of Corporate Social Responsibility(CSR) has grown exponentially in the last decade. This study investigates the effects of CSR on earnings management. Different to precedent works which focus on Financial Performance, this study attempts to provide empirical evidence for relevance of CSR and Discretionary Accruals(DA). The study used variables in the sustainability report, and DA for its earning management too progress empirical analysis because it is believed that the measurement of accounting transparency is highly related to the CEO's opportunistic selection of the accounting. In terms of Sustainable management activities, Employee training time(ETT) is significantly and negatively associated with Discretionary accruals(DA). And also Industrial Accidents Ratio(IAR) is significantly and negatively associated with Discretionary accruals. Consequently, empirical results suggest that Discretionary accruals associated with the company's CSR activities, such as ETT, and IAR. In this study, there are limitation of generalizations and omitted variable problem.

• 한국컴퓨터정보학회논문지
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• 제29권4호
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• pp.161-175
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• 2024

본 연구는 OTT 개인화된 추천서비스에 대한 프라이버시 염려와 개인정보 제공 의도에 미치는 선행요인들을 분석하였다. 먼저 OTT 개인화 추천시스템의 특성을 정확성, 다양성, 신기성으로 하였고, 성격 5요인 모형인 친화성, 정서적 불안정성, 성실성, 외향성, 경험에 대한 개방성을 활용하였다. 또한 지각된 투명성을 추출하여 정보 프라이버시 염려, 개인정보 제공 의도 간의 관계를 분석하였다. 그리고 서비스 혜택과 개인정보 제공 의도 간의 관계를 살펴본 후 프라이버시 염려와 개인정보 제공 의도에 있어 조절 효과가 있는지 분석하였다. 연구 결과에 따르면 개인화 추천시스템 특성들은 유의한 영향을 미치지 못하는 것으로 나타났으나, 성격 5요인 중 정서적 불안정성, 외향성, 경험에 대한 개방성은 유의한 영향을 미치는 것으로 나타났다. 또한, 지각된 투명성 역시 프라이버시 염려에 유의한 영향을 미치는 것으로 나타났다. 프라이버시 염려와 서비스 혜택은 개인정보 제공의도에 유의미한 영향을 미치며 프라이버시 염려와 개인정보 제공의도 간에 서비스 혜택이 조절효과를 가지는 것으로 나타났다. 본 연구의 결과는 OTT 기업들이 사용자들의 프라이버시 보호 행동을 이해하는데 도움을 줄 것으로 본다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권9호
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• pp.3693-3711
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• 2020

e-Governance is a medium to offer various services to citizens through a web portal, that exists in many countries nowadays. The existing e-Governance technology is a vast, centrally managed database and a set of applications that connect to it via web interfaces. Despite the modernisation of services, it remains with the lack of transparency. Thus, the existing infrastructure of e-Governance paves the way for corrupt practises by the bureaucrats. e-Governance needs a powerful underlying technology which doesn't provide any way to allow tampering of the record and which in turn eliminates corruption. In this paper, we took land registration as a use-case for building e-Governance by keeping Blockchain as an underlying technology, to put off the corrupt practices and to bring transparency. Once transactions in land registration added to the Blockchain, it is immutable as it is cryptographically secured. Besides, the blockchain technology is secured as the ledger is distributed over the network. If a hacker wants to modify the ledger, he needs to hack every node in the blockchain network. Hyperledger Fabric, a permissioned Blockchain adopted for implementation and Hyperledger Caliper for performance analysis with these evaluation metrics such as throughput, latency and execution time.