• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.385-386
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• 2020

In this paper, we propose a collaborative filtering recommendation algorithm based on the LDA2Vec topic model. By extracting and analyzing the article's content, calculate their semantic similarity then combine the traditional collaborative filtering algorithm to recommend. This approach may promote the system's recommend accuracy.

• Journal of information and communication convergence engineering
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• v.3 no.4
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• pp.195-200
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• 2005

The MPEG-4 standard is aimed to define an object based audiovisual coding standard to address the emerging needs from interactive broadcasting. Since a broadcasting program is created on the basis of its objects, it is considered that MPEG-4 is most suitable for interactive broadcasting contents production and it can be retrieved in terms of its properties. But, there is no system that protects the copyright of digital contents and manages copyright and possibility that contents producer and author's copyright receives infringement at process that exchange contents mutually rose very. Therefore, we need to control and distribute contents according to user's permission rights. In this paper, we present the authoring system based on MPEG-4 IPMP for copyright and protection of MPEG-4 contents. The main features of the proposed approach is to provide an MPEG-4 compliant IPMP authoring system in a plug-in type along with standardized interfaces, which is to be able to incorporated into an existing MPEG-4 content authoring system. In this way, it is capable of authoring content to the MP4 file format while accommodating protection and management of content in a unified way. Furthermore, it also allows a user to edit and/or author IPMP information in a more efficient way by offering form based user interfaces.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.20 no.6
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• pp.33-42
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• 2010

With the emergence of increasingly complex networks and diverse user terminals, demand for the next generation IPTV service is rapidly growing. It enables any content to seamlessly be reused on the diverse terminals as well as be broadcasted in real-time through the complex networks. In this paper, a novel security framework is proposed for the real-time and reusable IPTV services. The proposed framework is advantageous over the conventional content protection techniques in easily producing the scalable content with lightweight, perceptual, transcodable, and adjustable security features. It does not only ensure end-to-end security over the entire service range based on a single security mechanism, but also can control a level of security while dynamically transcoding the original content. This approach basically performs selective encryption during and after the compression using scalable video coding. The suitability of the proposed approach is demonstrated through experiments with a practical service scenario. Therefore, it is expected that security technology alone could practically contribute to creating new business opportunities for IPTV services.

• Journal of Information Technology Applications and Management
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• v.30 no.1
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• pp.115-126
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• 2023

In various fields such as art, design, music, film, sports, games, and fashion, NFTs (Non-Fungible Tokens) are creating new economic value through trading platforms dedicated to NFT art and content. In this article, I analyze the current state of blockchain technology and NFT art content in the context of an expanding market for blockchain-based NFT art content in the metaverse. I also propose several tasks based on the economic and industrial logic of technological innovation. The first task proposed is to integrate cultural arts on blockchain, metaverse, and NFT platforms through digital innovation, instead of separating or distinguishing between creative production and consumption. Before the COVID-19 pandemic, there was a clear separation between creators and consumers. However, with the rise of Web 3.0 platforms, any user can now create and own their own content. Therefore, it is important to promote a collaborative and integrated approach to cultural arts production and consumption in the blockchain and metaverse ecosystem. The second task proposed is to align the legal framework with blockchain-based technological innovation. The enactment and revision of relevant laws should focus on promoting the development of the NFT trading platform ecosystem, rather than merely regulating it for user protection. As blockchain-based technology continues to evolve, it is important that legal systems adapt to support and promote innovation in the space. This shift in focus can help create a more conducive environment for the growth of blockchain-based NFT platforms. The third task proposed is to integrate education on digital arts, including metaverse and NFT art contents, into the current curriculum. This education should focus on convergence and consilience, rather than merely mixing together humanities, technology, and arts. By integrating digital arts education into the curriculum, students can gain a more comprehensive understanding of the potential of blockchain-based technologies and NFT art. This article examines the digital technological innovation such as blockchain, metaverse, and NFT from an economic and industrial point of view. As a limitation of this research, the critical mind such as philosophical thinking or social criticism on technological innovation is left as a future task.

• The Journal of the Korea institute of electronic communication sciences
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• v.19 no.5
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• pp.817-826
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• 2024

Modern networks and the internet now handle an unprecedented volume of data packets, making efficient traffic management increasingly challenging. To address this issue, next-generation network architectures like Content-Centric Networks (CCN) have emerged. CCN focuses on content-centric data processing to minimize unnecessary traffic. Traditional internet architectures primarily use an end-to-end approach, where multiple users requesting content simultaneously can lead to a surge in traffic. In contrast, CCN optimizes traffic by utilizing in-network cache functions, reducing the time required to serve content to users. Therefore, in CCN, it is crucial to determine which caching policy to apply for effective content management. Existing research has proposed various caching methods based on factors like Hit count and producer popularity. However, these methods often fail to consider content type, resulting in situations where less popular videos are removed in favor of images, potentially increasing network traffic. This study proposes a caching strategy that distinguishes between content type and producer popularity to further reduce network traffic and response time.

• Asia-Pacific Journal of Business
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• v.5 no.2
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• pp.1-12
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• 2014

Tourism has been considered as the largest industry in the world, which is contributing towards employment generation, wealth creation and pursuing social benefits. Growing concern about the impact of human activities upon the environment, increased awareness of and concern for global environment have intensified the demand for sustainable tourism and their focus on balancing of: profit-driven motives, preserving and enhancing the social as well as ecological balance. Based on secondary materials and content analysis present study evaluated existing status of sustainable tourism development and explored important change strategies for future improvement of tourism sector in Bangladesh. The study recognized different views of change management and various strategies for obtaining sustainability in tourism industry. The present study identified the institutional networks, challenges in the way of applying systems approach to change management for sustainable tourism development and suggested important options for overcoming the impediments to operate through the proposed strategic framework in Bangladesh.

• Journal of Information Processing Systems
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• v.15 no.2
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• pp.261-270
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• 2019

In order to protect secret digital documents against vulnerabilities while communicating, steganography algorithms are applied. It protects a digital file from unauthorized access by hiding the entire content. Pixel-value-difference being a method from spatial domain steganography utilizes the difference gap between neighbor pixels to fulfill the same. The proposed approach is a block-wise embedding process where blocks of variable size are chosen from the cover image, therefore, a stream of secret digital contents is hidden. Least significant bit (LSB) substitution method is applied as an adaptive mechanism and optimal pixel adjustment process (OPAP) is used to minimize the error rate. The proposed application succeeds to maintain good hiding capacity and better signal-to-noise ratio when compared against other existing methods. Any means of digital communication specially e-Governance applications could be highly benefited from this approach.

• Journal of Korea Society of Industrial Information Systems
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• v.9 no.4
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• pp.26-31
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• 2004

Due to the recent explosive progress of Web, We can easily access a large number of images from m. In this paper, we describe our approach of developing a general purpose content based image retrieval system over the H using a Web agent. The Web agent extracts text information of images from the links and file contents in HTML. The proposed system retrieves the images from database using the query by sketch and the query by example on Web browser. Experimental results demonstrate the effectiveness of the new approach.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.22 no.6
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• pp.1178-1184
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• 1997

Encoding of segment contours is a critical part of a region-based coding system especially at low bit rates where the contour information occupies a majority of the bit rate. When approximating contours with polygons, a fixed upper bound on the distortion is set for the approximation process. Instead of using this fixed bound, adaptive approximation bound for a lossy coding of contourts is proposed in this paper. A function representing the relative importance of the contour segmentis defined to take into account the spatial content of the image. By using this function, the contour can be approximated adaptively. This allows a more general approach than the methods with the fixed distortion measure. The effectiveness of the adaptive contour coding approach is verified through experiments.

• Perspectives in Nursing Science
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• v.15 no.1
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• pp.41-48
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• 2018

Purpose: The purpose of this study was to identify the latest evidence for interventions involving adolescent newlyweds, and the feasibility of premarital coaching (PMC). Methods: A narrative literature review design carried out through related studies was used for the present literature review. A diverse search from several databases was performed to create a critical appraisal and to develop a more integrated model for the PMC program. Studies that empirical, written in English, peer-reviewed, and published during 2008~2017 were included. Results: Six articles were selected for the review. The principal findings identified three major themes including underage period as a high-risk for marriage, development tasks of the newly married spouse, parenting self-efficacy and the psycho-educational approach of PMC to enhance parenting knowledge, skills, and readiness. Conclusion: It was found that content of PMC as the preparation of underage married couples were formulated based on coaching technic, various spouse and parenting educations, and adjusted based on couples's preferences. Rigorous studies with measurement of long-term retentions are needed.