• International Journal of CAD/CAM
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• 제2권1호
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• pp.29-37
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• 2002

De-manufacturing is an entire process of collecting, disassembling, reusing, refurbishing, recycling, and/or disposing products that are obsolete or un-repairable. Designing the products for inexpensive and efficient disassembly enhances the ease of de-manufacturing. Virtual disassembly addresses the difficulty and the methods to disassemble a product in design stage rather than really disassemble a product at the end of its life cycle. Based on the virtual disassembly analysis results, design will be improved for better assembling/disassembling. This paper presents a systematic virtual disassembly methodology such as disassembly relation modeling, path/sequence automatic generation and evaluation. This paper also presents a new virtual disassembly interface paradigm via virtual reality technology for disassembly simulation in virtual environment.

• 가정과삶의질연구
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• 제20권1호
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• pp.139-149
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• 2002

The aim of this study is to examine the consumer information behavior and consumer satisfaction in virtual community, and analyse influential variables on these. The data for this study were collected from members of virtual community for cosmetics in DAUM ( www.daum.net) through self-report questionnaires. Main findings are following; Virtual community consumer experiences satisfaction for products including information, and information behavior. And the greater information behaviors are associated with the greater satisfaction. And the virtual community consumers' information behavior and satisfaction don't differ largely by internet variables and socio-demographic variables. On the other hand, virtual community consumers' information behavior and satisfaction are associated with psychological variables like community membership, information wants, enduring involvements. In conclusion, these satisfactions make the effect of ‘feedback’ to information behavior, so these virtual community is able to be activated. And this also means that virtual community is Ideal space for consumer to expand information behavior.

• Current Optics and Photonics
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• 제4권4호
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• pp.336-344
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• 2020

Exact optical characterization of virtual and augmented reality devices using conventional luminance measuring methods is a time-consuming process. A new measurement method is proposed to estimate in a relatively short time the boundary of ray trajectories emitting from a specific position on a virtual images. It is assumed that the virtual image can be modeled to be formed in front of one's eyes and seen through some optical aperture (field stop) that limits the field of view. Circular and rectangular shaped virtual images were investigated. From the estimated ray boundary, optical characteristics, such as the viewing direction and three dimensional range inside which a eye can observe the specified positions of the virtual image, were derived. The proposed method can provide useful data for avoiding the unnecessary measurements required for the previously reported method. Therefore, this method can be complementary to the previously reported method for reducing the whole measurement time of optical characteristics.

• Journal of Multimedia Information System
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• 제6권1호
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• pp.7-14
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• 2019

This work presents a virtual prototyping design approach for an area-based image stitching hardware. The virtual hardware obtained from virtual prototyping is equivalent to the conceptual algorithm, yet the conceptual blocks are linked to the actual circuit components including the memory, logic gates, and arithmetic units. Through the proposed method, the overall structure, size, and computation speed of the actual hardware can be estimated in the early design stage. As a result, the optimized virtual hardware facilitates the hardware implementation by eliminating trail design and redundant simulation steps to optimize the hardware performance. In order to verify the feasibility of the proposed method, the virtual hardware of an image stitching platform has been realized, where it required 10,522,368 clock cycles to stitch two $1280{\times}1024$ sized images. Furthermore, with a clock frequency of 250MHz, the estimated computation time of the proposed virtual hardware is 0.877sec, which is 10x faster than the software-based image stitch platform using MATLAB.

• 자동차안전학회지
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• 제14권4호
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• pp.60-69
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• 2022

Recently, the importance of simulation validation in a virtual environment for autonomous driving system validation is increasing. At the same time, interest in the advancement of the virtual driving environment is also increasing. To develop autonomous driving technology, a simulation environment similar to the real-world environment is needed. For this reason, not only the road model is configured in the virtual driving environment, but also the driving environment configuration that includes the surrounding environments -traffic, object, etc- is necessary. In this article, FMTC, which is a test bed for autonomous vehicles, is implemented in a virtual environment and advanced to form a virtual driving environment similar to that of real FMTC. In addition, the similarity of the virtual driving environment is verified through comparative analysis with the real FMTC.

• International journal of advanced smart convergence
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• 제11권2호
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• pp.44-52
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• 2022

The purpose of our study is to examine the influence of telepresence on cultural heritage attachment in the context of virtual museum. We determined the effect of telepresence on visitors' aesthetic and educational experiences and how these experiences affect visitors' perceptions of virtual museum service value. Moreover, we investigate the effect of perceived virtual museum service value on museum attachment and cultural heritage attachment. A total of 143 visitors were sampled through an online survey focusing on Chinese virtual museum visitors. The results show that all the paths presented significant effects. Additionally, it was found that telepresence indirectly influences cultural heritage attachment through education experience and perceived virtual museum value. The theoretical and practical implications are also provided. An important implication is that online virtual museum is essential to raise visitors' education experience and their cultural heritage attachment. Thus, virtual museum should take initiative to enhance virtual reality to ensure traditional culture education and formation their cultural heritage attachment.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집C
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• pp.213-218
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• 2001

VR (Virtual reality) technologies have given engineers the ability to design, test, and evaluate engineering systems in a virtual environment. The virtual plant is the highlight of the application of the VR technology to plant engineering. Plant design, maintenance, control, management, operation are integrated in the virtual plant. The VR monitoring system including the concept of the virtual plant is developed to replace a current control room that has number of gages and warning lamps in two-dimensional panels which shows the operating status of a plant. The operating status of the plant is displayed in the VR monitoring system through the realistic computer graphics. Sophisticated, realistic and prompt control becomes possible. The VR monitoring system consists of advanced visualization, walk-through simulation and navigation. In the virtual environment, a user can navigate and interact with each component of a plant. In addition, the user can access the information by just clicking interesting component. The VR monitoring system is operated with various modules, such as (1) virtual plant constructed with Graphic Management System (GMS), (2) Touch & Tell System, and (3) Equipment DB System of Part. In order to confirm the usefulness of the VR monitoring system, a pilot gas plant which is currently being used for plant operator training is taken as application. The end of the paper gives an outlook on the future work and a brief conclusion.

• 정보화연구
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• 제10권1호
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• pp.93-100
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• 2013

본 논문은 물류기업에 서버 및 스마트폰 어플리케이션을 이용하여 모바일 네트워크상에서 TRS(Trunked Radio System) 기능을 제공하는 Smart Virtual TRS 적용에 관하여 설명하고자 한다. TRS는 물류 차량의 필수 장비이기 때문에 대부분의 트럭 운전기사는 TRS를 자주 사용한다. 개발된 서비스는 별도의 TRS 단말기 없이 스마트폰을 기반으로 하기 때문에 Smart Virtual TRS가 포함된 TMS(Transportation Management System)는 물류회사에 다음과 같은 효과를 제공한다. i) Smart Virtual TRS는 사무실과 트럭 운전자간의 더 나은 의사소통 환경을 제공한다. ii) 스마트폰어플리케이션은 TMS의 기능에 유연성을 제공한다. iii) Smart Virtual TRS는 비용 절감 효과를 제공한다.

• 한국유통학회지:유통연구
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• 제6권1호
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• pp.77-101
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• 2001

이 연구는 가상환경에서 점포이미지에 영향을 주는 선행요인을 모색하고, 그러한 요인들의 결합이 사이버 소비자의 이미지추론에 어떠한 영향을 미치는지를 살펴 보았다. 또한, 가상점포이미지에 의한 사이버 소비자의 추론은 고객만족도와 가상 점포충성도에 어떠한 영향을 미치는지를 규명했다. 연구결과는 다음과 같이 요약된다. 첫째, 가상점포의 제품구색, 촉진, 인터페이스 등과 같은 요인들이 점포이 미지형성에 기여하며, 이들 요인들은 가상점포이미지 구성요인이라기보다는 점포 이미지의 선행요인임이 입증되었다. 둘째, 가상점포이미지가 호의적일수록 고객 만족도는 높아진다. 셋째, 가상점포이미지가 호의적일수록 가상점포충성도는 향상된다. 넷째, 고객만족도가 높을수록 가상점포충성도는 향상된다.

• International Journal of Advanced Culture Technology
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• 제10권4호
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• pp.28-38
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• 2022

Virtual idols have aroused wide attention as a novel product of the idol industry in the digital era over the past few years. The population of China determines that virtual idols have a huge fan market. As a digital cultural product closely connected with fans, virtual idols are im-portant to gain insights into the correlation between fan satisfaction and virtual idol functions. In accordance with the KANO demand model, this study first classifies and explains the specific functions of virtual idols into four quadrants, including attractive, must-be, 1D (One-Dimensional), and indifferent. Subsequently, the satisfaction of fans of virtual idols with specific functions in each quadrant are analyzed using a questionnaire. This study suggests that virtual idols have one at-tractive quality, three 1D quality, two must-be quality, and five indifferent quality functional elements. This study qualitatively analyzes the functional elements of virtual idols through fan satisfaction based on the KANO model, which provides valuable help for future research in the field of virtual idols and producers in this field.