• 한국주거학회논문집
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• 제12권2호
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• pp.181-190
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• 2001

The purpose of this study is to analysis web sites which relate to housing environment on Internet and to suggest guidelines which are needed in digital life. Data are in 53 web sites searched by housing environmental word such as people, living, town and so on. The web sites are analyzed by key words. The results of this study were as follow: The web sites are divided into e-housing community, e-housing management, e-housing workplace and e-housing design. These are the digital life of new type. E-housing community sitess key words are 3D virtual world, chatting, information, service, community etc. E-housing community is related to making new wired community cross time and space. E-housing management sitess key words are guard management, apartment management, building management etc. E-housing management sites provide the useful information of housing management. E-housing workplace sitess key words are virtual office. conference etc. E-housing workplace sites enable us to work in cyberspace. E-housing design sitess key words are design, interior, furniture etc. E-housing design sites provide marketing, consulting and designing in relation to the house. The web life style on cyberspace is common and makes many changes happen in house life and environment.

• 대한전자공학회논문지TC
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• 제42권10호
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• pp.31-38
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• 2005

IPSec은 인터넷의 네트워크 계층의 IP 메시지를 위한 기밀성과 인증서비스를 제공하는 보안 프로토콜이다. Internet Key Exchange (IKE)는 안전하게 Security Association (SA)를 협상하고 키 재료를 제공하는 프로토콜이다. 본 논문에서는 IPSec을 적용한 가상사설망의 성능 개선을 위해 동적으로 키 재생성 주기를 변경하는 알고리즘을 제안한다. 제안하는 알고리즘은 보안 터널 수에 따라 키 재생성 주기를 변경한다. 성능 평가를 위해 Linux 2.4.18과 FreeS/WAN을 사용하여 구현한다. 구현한 시스템은 기존 프로토콜에 비하여 네트워크 처리율과 보안성 측면에서 성능이 개선됨을 보여주고 있다.

• 대한전자공학회논문지SD
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• 제40권9호
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• pp.658-665
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• 2003

본 논문에서는 위상 변조된 가상 영상을 이용하여 암호화 수준을 향상시키고 퓨리에 영역에서 잡음이나 변이에 강한 복호화 방법을 제안하였다. 암호화된 영상은 원 영상이 아닌 위상 변조된 가상 영상과 무작위 위상 영상을 곱하여 퓨리에 변환하여 만든다. 따라서 허가되지 않은 사용자가 암호화된 영상을 분석함으로써 있을 수 있는 복제 가능성을 원 영상의 어떤 정보도 포함하지 않은 가상 영상을 사용함으로써 배제할 수 있다. 복호화 과정은 암호화된 영상과 제안한 위상 대응 규칙으로 만들어진 퓨리에 복호화 키를 간섭시킨 후 퓨리에 역변환하여 간단히 원 영상을 재생하고 컴퓨터 모의 실험을 통하여 제안한 방법의 암호화된 영상과 복호화 키 영상에 잡음이나 영상의 절단, 변이가 발생하더라도 원 영상의 복원이 가능함을 확인하였다.

• 한국IT서비스학회지
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• 제23권2호
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• pp.63-81
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• 2024

With the advancement of Information and Communication Technologies (ICT) and Artificial Intelligence (AI), the metaverse has emerged as a transformative model across various sectors, offering a three-dimensional virtual world where activities mirroring the real world occur. This study delves into the significant factors influencing fashion brand companies' investments in the metaverse, an evolved concept from Virtual Reality (VR) that extends beyond gaming to include real-life activities through avatars. This study highlights the surge in virtual fashion engagements, as evidenced by increased avatar updates and purchases of digital fashion items on platforms like Roblox. Luxury brands are steadily entering the metaverse indicating a new revenue stream within the fashion industry. This study employs a mixed-methods approach, integrating text mining and interviews to identify key factors for fashion companies considering metaverse investments. By proposing strategies based on these findings, this study not only enriches academic discourse in fashion, e-commerce, and information systems but also serves as a guideline for fashion companies aiming to navigate the burgeoning digital market, contributing to the generation of new revenue streams in the fashion sector.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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• pp.123-130
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• 2001

At present, the virtual prototyping technology for complex product is one of the research and application hotspots in current simulation technology. In authors viewpoint, the virtual prototype development for complex product has become a systematic engineering, which can be called the complex product virtual prototyping engineering (CPVPE). In this paper, the architecture, key technologies and its supporting environment of CPVPE are primary discussed firstly. Combined with the research project and primary practice undertaken by the authors, a typical application demonstration of the aerospace complex product virtual prototyping engineering (including mechanism, dynamics, software and control system) is also introduced based on the virtual prototype supporting environment developed by the authors. Finally, some further research works on CPVPE are also presented in this paper.

• 디지털융복합연구
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• 제11권4호
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• pp.121-128
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• 2013

최근 정부의 각종 규제로 인해 대형마트는 새롭게 시장을 확대할 수 있는 방법을 찾고자 노력하고 있다. 홈플러스의 가상스토어는 24시간 접속할 수 있다는 점, 그리고 정부 규제에서 자유롭다는 점에서 주목받고 있다. 본 연구는 홈플러스 가상스토어의 성과 및 전략 그리고 이를 모방한 기업들의 실패 원인을 살펴봄으로 앞으로 가상스토어를 운영하고자 하는 기업들이 기존의 실패를 답습하지 않고 성공적으로 운영하기 위해 필요한 요소들을 살펴보고자 한다.

• Genomics & Informatics
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• 제5권1호
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• pp.24-29
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• 2007

Computational virtual screening has become an essential platform of drug discovery for the efficient identification of active candidates. Moleculardocking, a key technology of receptor-centric virtual screening, is commonly used to predict the binding affinities of chemical compounds on target receptors. Despite the advancement and extensive application of these methods, substantial improvement is still required to increase their accuracy and time-efficiency. Here, we evaluate several advanced structure-based virtual screening approaches for elucidating the rank-order activity of chemical libraries, and the quantitative structureactivity relationship (QSAR). Our results show that the ensemble-average free energy estimation, including implicit solvation energy terms, significantly improves the hit enrichment of the virtual screening. We also demonstrate that the assignment of quantum mechanical-polarized (QM-polarized) partial charges to docked ligands contributes to the reproduction of the crystal pose of ligands in the docking and scoring procedure.

• 한국CDE학회논문집
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• 제18권1호
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• pp.21-27
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• 2013

Presented in the paper is a log data based modeling method for effective construction of a virtual plant model which can be used for the virtual PLC (Programmable Logic Controller) simulation. For the PLC simulation, the corresponding virtual plant, consisting of virtual devices, is required to interact with the input and output symbols of a PLC. In other words, the behavior of a virtual device should be the same as that of the real device. Conventionally, the DEVS (Discrete Event Systems Specifications) formalism has been used to represent the behavior a virtual device. The modeling using DEVS formalism, however, requires in-depth knowledge in the simulation area, as well as the significant amount of time and efforts. One of the key ideas of the proposed method is to generate a plant model based on the log data obtained from the production system. The proposed method is very intuitive, and it can be used to generate the full behavior model of a virtual device. The proposed approach was applied to an AGV (Automated Guided Vehicle).

• 복식문화연구
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• 제32권2호
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• pp.148-163
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• 2024

With the digitalization of production and consumption environments, consumers are no longer merely targets of marketing, but key players in creating value jointly with companies by participating in various decision-making processes. Much virtual content in particular, such as fashion shows, exhibitions, games, social activities, and shopping, which fashion brands implement in virtual worlds, cannot be completed without consumers' active engagement and interaction. Thus, this study considers consumers' participation in virtual content provided by fashion brands as value co-creation in virtual worlds. This study aims to examine how consumer (i.e., consumer smartness) and fashion firm (i.e., perceived intellectual capital) factors influence value co-creation behavior intention in virtual worlds. Data were collected from 410 consumers in their 20s nationwide through an online survey, and a higher-order structural equation modeling analysis was conducted to test the research model. The results showed that both consumer smartness and perceived intellectual capital positively influenced customer participation behavior and citizenship behavior intentions. Specifically, perceived intellectual capital had a greater impact on value co-creation behavior in the virtual world than consumer smartness. The findings provide empirical evidence that the fashion firms' intangible assets and consumers' competence in the digital shopping environment encourage their intentions to co-create value in virtual worlds.

• 디지털콘텐츠학회 논문지
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• 제19권9호
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• pp.1653-1662
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• 2018

본 연구는 화장품 앱이 제공하는 가상 메이크업 템플릿과 메이크업 룩의 관계를 조사하였다. 한국의 20대 및 30대 여성 34명을 대상으로 설문조사한 결과, 19개 가상 메이크업 템플릿중 'Bella', 'Hilary', 'Cara' 등 3개를 가장 선호하며, 이에 상응하는 메이크업 룩은 각각 '섹시', '클래식', '내추럴'인 것으로 조사되었다. 전문가의 정성적 평가와 통계적 분석에 의한 정량적 평가를 통해 이들은 메이크업 템플릿과 유사한 메이크업 룩을 선호하고, 전반적으로 고명도의 연한 피부색과 중명도의 밝은 입술색을 선호하는 것으로 분석되었다.