• Journal of the Korean Institute of Landscape Architecture
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• v.41 no.4
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• pp.24-41
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• 2013

This study aims to investigate the complex planning processes and design ideas of the Gwanghwamun Plaza which was opened in 2009. The opening of the plaza was significant as it was built in order to restore the symbolic meaning of axis in the historical Joseon Dynasty that was distorted during the Japanese Imperialism. The plaza itself attracts many citizens and tourists by providing the empty ground carrying historical ambiences around. In this paper, the story of the Gwanghwamun plaza will be summarized. Particularly, the background of promoting the project will be discussed and the whole planning process will be dealt with. The plaza was realized through several stages. First, the planning stage will be reviewed. The planning stage had been a quite long process since the initial idea was discussed. Since the early 90s, the political decision of making the plaza was made through the change of people's understanding toward public space. At this stage, the city government worked together with diverse citizens and professionals to share the vision and to realize the right decision in making the plaza. Second, the design stage will be elaborated in detail. This is the second design stage. The former was the idea competition and the latter was the turn-key base. The final design scheme emphasized the restoration of symbolic axis and the forgotten Yukjo Street. The scheme consists of four zones such as history restoration zone, prospect and history representation zone, culture zone, and the urban zone. Through the whole design process, the original idea remained as it was. The design concept was "a place of memory and prospect." It emphasizes the history representation, view corridor, cultural activities platform as well as the emptiness and flexibility of the basic premise of the plaza. Finally, the construction stage will be discussed. There were some additions and omissions in the construction process. The design chances in the construction stage will be reviewed in detail. After the opening of the plaza, there were some changes in the detail design. We will discuss how and why these modifications were made. In the end, the social and cultural implication of the plaza will be discussed. The storytelling of the Gwanghwamun Plaza will contribute to the clear understanding of planning and design process of pubic places. Based on this reflection, we are able to think about some suggestions of public projects for the future.

• Management & Information Systems Review
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• v.33 no.2
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• pp.263-279
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• 2014

SPAC(Special Purpose Acquisition Company) is the paper company that aims the merger of private company only, and introduced in Korea at 2009. Until 2013, 22 SPACs were listed, and 10 of them made successful mergers but rest were delisted. When IPO, range of the volume of public offerings were 20~30 billion won. After IPO, some SPACs showed extreme price movements, but on average their prices were below IPO prices 1 year later and near IPO prices 2 years later. Successful SPACs showed positive and significant 2.94% 25 days Cumulative Average Abnormal Return(CAAR) before the public announcements of merger and also showed positive and significant 10.60% 45 days CAAR around the general meetings of shareholders. I concluded that SPAC market were constrained by several regulations, so deregulation is needed for SPAC market activation.

• Journal of Korean Library and Information Science Society
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• v.50 no.4
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• pp.249-272
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• 2019

This study aims to investigate the experiences of librarians/staff members who are responsible for facilitating makerspaces in public libraries, including their works and core competencies, their needs and experiences of training, and future plans in makerspaces. To do that, we carried out semi-structured interviews with 11 librarians/staff members and 1 library director from 7 public library makerspaces. Findings show that the participants received financial supports from the government agencies or/and relied on their library budget to run makerspaces. They identified competencies such as technology literacy, domain knowledge, teaching/programming, willingness to learn and curiosity, communication skills, leadership, and design-thinking. They have future plans for expanding spaces, purchasing equipments, program development, and so on. We believe findings could be useful for those who currently manage or plan to implement a public library makerspace by understanding practical issues and training needs in makerspaces.

• The Journal of Sustainable Design and Educational Environment Research
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• v.16 no.3
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• pp.1-8
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• 2017

The study is a precursor to the final goal of organizing a future school building plan to prepare for the new paradigm. Planning direction presentation through planning elements and principles is key purpose. Based on the results of the study, it is meaningful that the school facilities will be able to fulfil the educational role of the school facilities, including science, technology, and environment. Based on the theoretical concepts of prospective school facilities and research data, the school plans to construct architectural plan elements and construct the architectural plan based on the guidelines of the school plan based on the evaluation criteria of the school building and the evaluation criteria based on the evaluation criteria of the school building and the calculation of the plan through the procurement criteria of the school and the Future Schools.

• Journal of the Korea Society of Computer and Information
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• v.16 no.9
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• pp.145-153
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• 2011

In this paper, we propose a CMS(Career Management System) based on the Android Platform, which is able to manage the result of MBTI, an aptitude test and English skills such as TOEIC, conversation, writing, etc. and to deal with the performance of the on-the-job practice, internship, project participation, graduation exhibition, contest exhibition, etc. during the period of attendance at school, This system is divided into the server module and the client one. First, the server module is used to build up the web site of the CMS that can serve to save the data related to each student's career. Second, the client module is to develop the application based on the Android Platform. This application can easily access the career-related information and always function as maintaining and managing the new data. If we make good use of the CMS proposed in this study, the relevant departments and bureaus in colleges and universities can activate the service capacity and also enhance the employment competitiveness by adding value to the students.

• The Journal of Korean Association of Computer Education
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• v.19 no.4
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• pp.11-20
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• 2016

In this paper, I developed a assesment indicator to evaluate SW program developed by students in SW education. The SW education carry out in elementary school, middle school and high school from 2016. But the assesment indicator to evaluate SW program had not been developed until now. Therefore, I tried to develop the assesment indicator that have harmoniously educational characteristic and SW qualitative characteristic. First of all, I had set the 15 attributes for assesment and developed the 36 criteria for 15 attributes. And the validity of 15 attributes and 36 criteria for assesment had been reviewed by 39 SW educational experts. As a result, the 15 attributes and 36 criteria for assesment were determined to which that have validity. I expect that the assesment indicator developed in this paper will raise the reliability of evaluation in SW education. And the assesment indicator may be used at SW competition conference for teenagers.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.11 no.5
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• pp.53-62
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• 2001

Fast diffusion of personal computer and network, and developed security technology are augmenting specific gravity of convenient and safe electronic voting system supplementing much problems of existent off-line vote form. But in spite of enlargement of these weight, much limitations are extravagant. Specially, problem that secure voter\`s anonymousness and accuracy of poll can be important urea that judge if electronic voting system can be applied actually. Also, problems such as buying and selling of vote remain to subject that must solve yet. In this paper, we introduce items that is considered to design the safe electronic voting system, and present limitation of electronic polling system announced in [1]. And we propose improvement way. Improved protocol keeping advantages that is presented in [1], designed to keep away voter\`s anonymousness defamation by conspiracy of Election Administration Committee and Totaling Committee, and block unlawful election intervention as original.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.31 no.3
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• pp.481-496
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• 2021

It is imperative to migrate the current public key cryptosystem to a quantum-resistance system ahead of the realization of large-scale quantum computing technology. The National Institute of Standards and Technology, NIST, is promoting a public standardization project for Post-Quantum Cryptography(PQC) and also many research efforts have been conducted to apply PQC to TLS(Transport Layer Security) protocols, which are used for Internet communication security. In this paper, we propose a scenario in which a server and multi-clients share session keys on TLS by using the parallelized NTRU which is PQC in the key exchange process. In addition, we propose a method of accelerating NTRU using GPU and analyze its efficiency in an environment where a server needs to process large-scale data simultaneously.

• Journal of Convergence for Information Technology
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• v.11 no.6
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• pp.270-281
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• 2021

With the development of information technology, the size of insurance fraud is increasing rapidly every year, and the method is being organized and advanced in conspiracy. Although various forms of prediction models are being studied to predict and detect this, insurance-related information is highly sensitive, which poses a high risk of sharing and access and has many legal or technical constraints. In this paper, we propose a machine learning insurance fraud prediction model based on blockchain, one of the most popular technologies with the recent advent of the Fourth Industrial Revolution. We utilize blockchain technology to realize a safe and trusted insurance information sharing system, apply the theory of social relationship analysis for more efficient and accurate fraud prediction, and propose machine learning fraud prediction patterns in four stages. Claims with high probability of fraud have the effect of being detected at a higher prediction rate at an earlier stage, and claims with low probability are applied differentially for post-reference management. The core mechanism of the proposed model has been verified by constructing an Ethereum local network, requiring more sophisticated performance evaluations in the future.

• Journal of Korean Society of Archives and Records Management
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• v.21 no.4
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• pp.163-181
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• 2021

Photographic records capturing the changes of a city are vital parts of local history archives. They were, however, not collected properly for the local history archives even by local governments. Therefore, as a solution for this problem, seven major cities (Seoul, Incheon, Gwangju, Ulsan, Daejeon, Busan, and Daegu) initiated the urban landscape documentation project for archiving the photographic records of each city. This study investigated the current status of the urban landscape documentation project and found that Daegu metropolitan city's project only holds some of the contest photos and a few old photos from the local government. A proper donating process is urgently needed to preserve valuable photographic records of Daegu, and this study aims solutions for the Daegu metropolitan city's urban landscape documentation project to improve the acquisition methods of photographic records. This study suggests the process for photographic records donation from citizens and a metadata set for donated photographs.