• KSII Transactions on Internet and Information Systems (TIIS)
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• v.13 no.6
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• pp.3280-3298
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• 2019

Vehicular ad-hoc networks (VANETs) have become increasingly significant in intelligent transportation systems, they play a great role in improving traffic safety and efficiency. In the deployment of intelligent VANETs, intelligent vehicles can efficiently exchange important or urgent traffic information and make driving decisions. Meanwhile, secure data communication and vehicle's identity privacy have been highlighted. To cope with these security issues, in this paper, we construct an efficient anonymous authentication scheme with secure communication in intelligent VANETs. Combing the ElGamal encryption technique with a modified Schnorr signature technique, the proposed scheme provides secure anonymous authentication process for encrypted message in the vehicle-to-infrastructure communication model, and achieves identity privacy, forward security, and reply attack resistance simultaneously. Moreover, except the trusted authority (TA), any outside entity cannot trace the real identity of an intelligent vehicle. The proposed scheme is designed on an identity-based system, which can remove the costs of establishing public key infrastructure (PKI) and certificates management. Compared with existing authentication schemes, the proposed scheme is much more practical in intelligent VANETs.

• The Korean Journal of Archival Studies
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• no.1
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• pp.7-22
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• 2000

It is almost impossible to fulfill the users' information needs efficiently without any finding aids. The idiosyncrasy of archival materials had led the archivists to develop their own descriptive rules until the mid of 1980s. It was the arrival of computers and information networks that stimulated the archival community to standardize its variant descriptive practices. The primary purpose of the national and international archival description standards is to facilitate the cooperative archival data exchange. The Ad Hoc Commission on Descriptive Standards of the International Council on Archives adopted ISAD(G) and ISAAR(CPF) in 1993 and in 1995 respectively. ISAD(G) guides the formulation of information in each of 26 elements that may be combined to constitute the description of an archival entity. ISAAR(CPF) is to give general rules for the establishment of archival authority records in descriptions of archival documents. Histories, structures and fundamental principles of those two international archival standards have been studies in this article. Most of the present archival description standards are based on the principle of provenance and the authority model. The instability of modern organizations and the digitalization of record keeping systems have been making the archivists to review these basic archival principles. It is suggested that Korean archival community should attempt to draft a national archival descriptive standard suitable to the Korean archival practice and Korean language in the framework of the international standards.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.564-565
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• 2019

The Internet of Things technology is regarded as the next major technology that will be the driving force behind the fourth industrial revolution. The characteristics of entities for Internet of Things application are changing more actively and actively, requiring a more detailed approach, but existing access control technologies are designed around users, requiring access control techniques that maintain efficiency and security with less system load to apply complex and variable content. Therefore, research on role-based access controls that are appropriate for Internet of Things entities is essential. In this study, the relevant research for the study of access control of the Internet of Things entities and the RBAC and AC methods that can define the properties of the various entities within the Internet of Things.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.36 no.2
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• pp.71-78
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• 2020

This study focused on the 'public architecture' of each local area as an alternative to local regeneration with a huge amount of funding. The starting point of this study is the public architecture that can be used as a strategic resource for local regeneration as a hub for communities for residents in the local area. The main content of the research is to identify the requirements of public architecture as a local regeneration hub and problems in the current public architecture management system. Based on results of the study, the following direction is to be presented for improvement of the public architecture management system to contribute to continuous local regeneration. The first results reveal there is a need to actively introduce measures to dualize facility maintenance and program operation. Secondly, the results show the participation of residents in public architecture management should be more active to reflect local demand. Thirdly, it is evident that the management entity should establish and implement goals and strategies toward local regeneration. Lastly, public architecture must strive to provide local community space.

• Educational Technology International
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• v.21 no.1
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• pp.31-67
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• 2020

The purpose of this study was to propose an education cooperation model for Human Resources Development (HRD) in Asia-Pacific region in response to environmental changes in business and industry. In order to carry out the model, this study reviewed the key features of human resources in the APEC which is a symbolic regional integration entity in Asia-Pacific region, shaped critical issues related with HRD in this region and then analyzed the trends of education cooperation projects conducted by the APEC in terms of topics, implementation methods and proposing economies of the projects. In result, this study proposed a triangular education cooperation model for HRD consisting of three elements: Voluntary Partnership, Information on Needs and Support for Cooperation. These interconnected and interdependent elements were designed to encourage actors to participate in education cooperative activities with their own willingness, produce and manage research-based information required for sustainable cooperation and support communication and connectivity among actors for effective activities. Also, this study expected that this model would make a commitment to narrowing educational divides, enhancing global-standard skills development, facilitating public and private partnership and organizing the foundation of future education for cultivating creative talents in the era of innovation for APEC members.

• Genomics & Informatics
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• v.19 no.3
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• pp.24.1-24.7
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• 2021

Tracking the most recent advances in Coronavirus disease 2019 (COVID-19)-related research is essential, given the disease's novelty and its impact on society. However, with the publication pace speeding up, researchers and clinicians require automatic approaches to keep up with the incoming information regarding this disease. A solution to this problem requires the development of text mining pipelines; the efficiency of which strongly depends on the availability of curated corpora. However, there is a lack of COVID-19-related corpora, even more, if considering other languages besides English. This project's main contribution was the annotation of a multilingual parallel corpus and the generation of a recommendation dataset (EN-PT and EN-ES) regarding relevant entities, their relations, and recommendation, providing this resource to the community to improve the text mining research on COVID-19-related literature. This work was developed during the 7th Biomedical Linked Annotation Hackathon (BLAH7).

• Asian Journal of Innovation and Policy
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• v.10 no.3
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• pp.316-329
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• 2021

This study explores the role of the think tank as an intermediary organization in the open innovation system. Think tank has contributed to the policy process as a mediator between government and public and as a symbolic entity of intellectual innovation to produce knowledge to the public. As the innovation system matures, one of the major challenges in research and practice is the openness and collaboration in the science, technology, and innovation system. While previous literature highlighted the think tank as the knowledge arbitrager transforming ideas into policy issues, few studies address the research questions: Is the conventional role of the think tank still persistent in the open innovation system? What are the demanding roles? This paper tackles these questions by reviewing the current role of the South Korean think tank in the science & technology sector. Based on the open innovation framework, we suggest that think tanks need to play a bigger role as policy entrepreneurs, crossing policy borders and interacting with other partners.

• Communications of Mathematical Education
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• v.35 no.4
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• pp.413-423
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• 2021

This study investigated the empty set which is one of the mathematical objects. We inquired some misconceptions about empty set and the background of imposing empty set. Also we studied historical background of the introduction of empty set and the axiomatic system of Set theory. We investigated the nature of mathematical object through studying empty set, pure conceptual entity. In this study we study about the existence of empty set by investigating Alian Badiou's ontology known as based on the axiomatic set theory. we attempted to explain the relation between simultaneous equations and sets. Thus we pondered the meaning of the existence of empty set. Finally we commented about the thoughts of sets from a different standpoint and presented the meaning of axiomatic and philosophical aspect of mathematics.

• Annual Conference on Human and Language Technology
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• 2022.10a
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• pp.284-288
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• 2022

최근 다양한 언어모델의 구축 및 발전으로 개체명 인식 시스템의 성능은 최고 수준에 도달했다. 하지만 이와 관련된 대부분의 연구는 데이터가 충분한 언어에 대해서만 다루기 때문에, 양질의 지도학습 데이터의 존재를 가정한다. 대부분의 언어에서는 개체 유형에 대한 언어의 잠재적 특성을 충분히 학습할 수 있는 지도학습 데이터가 부족하기 때문에, 종종 자원 부족의 어려움에 직면한다. 본 논문에서는 Masked language modeling 기반 언어 간 전이학습을 이용한 개체명 인식 방법론에 대한 분석을 수행한다. 이를 위해 전이를 수행하는 소스 언어는 고자원 언어로 가정하며, 전이를 받는 타겟 언어는 저자원 언어로 가정한다. 본 논문에서는 언어모델의 토큰 사전에 언어 독립적인 가상의 자질인 개체 유형에 대한 프롬프트 토큰을 추가하고 이를 소스 언어로 학습한 뒤, 타겟 언어로 전이하는 상황에서 제안하는 방법론에 대한 평가를 수행한다. 실험 결과, 제안하는 방법론은 일반적인 미세조정 방법론보다 높은 성능을 보였으며, 한국어에서 가장 큰 영향을 받은 타겟 언어는 네덜란드어, 한국어로 전이할 때 가장 큰 영향을 준 소스 언어는 중국어인 결과를 보였다.

• Annual Conference on Human and Language Technology
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• 2022.10a
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• pp.131-134
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• 2022

자연어처리 분야 중 질의응답 태스크는 전통적으로 많은 연구가 이뤄지고 있는 분야이며, 최근 밀집 벡터를 사용한 리트리버(Dense Retriever)가 성공함에 따라 위키피디아와 같은 방대한 정보를 활용하여 답변하는 오픈 도메인 QA(Open-domain Question Answering) 연구가 활발하게 진행되고 있다. 대표적인 검색 모델인 DPR(Dense Passage Retriever)은 바이 인코더(Bi-encoder) 구조의 리트리버로서, BERT 모델 기반의 질의 인코더(Query Encoder) 및 문단 인코더(Passage Encoder)를 통해 임베딩한 벡터 간의 유사도를 비교하여 문서를 검색한다. 하지만, BERT와 같이 엔티티(Entity) 정보에 대해 추가적인 학습을 하지 않은 언어모델을 기반으로 한 리트리버는 엔티티 정보가 중요한 질문에 대한 답변 성능이 저조하다. 본 논문에서는 엔티티 중심의 질문에 대한 답변 성능 향상을 위해, 엔티티를 잘 이해할 수 있는 LUKE 모델 기반의 리트리버를 제안한다. KorQuAD 1.0 데이터셋을 활용하여 한국어 리트리버의 학습 데이터셋을 구축하고, 모델별 리트리버의 검색 성능을 비교하여 제안하는 방법의 성능 향상을 입증한다.