• 복식문화연구
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• 제31권4호
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• pp.489-503
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• 2023

This study utilized the unified theory of acceptance and use of technology 2 (UTAUT2) to examine usage intentions associated with virtual fitting services. Six independent variables were examined: performance expectancy, effort expectancy, social influence, facilitating conditions, hedonic motivation, and habit. The study collected responses from 445 participants who had utilized virtual fitting services. Regarding factors related to usage intentions associated with these services, performance expectancy and social influence were found to significantly influence the usage intentions associated with photo-based virtual fitting services. Furthermore, performance expectancy, social influence, and habit significantly influenced the usage intention of avatar-based virtual fitting services. This suggests that higher levels of performance expectancy and social influence positively impact the usage intentions associated with both types of virtual fitting services, while habit influences only avatar-based virtual fitting services. Moreover, the findings confirm that effort expectancy, facilitating conditions, and hedonic motivation from UTAUT2 do not significantly influence usage intentions associated with virtual fitting services. By analyzing factors influencing potential customers' virtual fitting service usage intentions, this study can suggest effective strategies to increase usage intentions for companies providing virtual fitting services. Additionally, these findings can be utilized in the formulation of virtual fitting service marketing strategies.

• Kyungpook Mathematical Journal
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• 제54권4호
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• pp.639-653
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• 2014

In [9], Kauffman introduced virtual knot theory and generalized many classical knot invariants to virtual ones. For example, he extended the Jones polynomials $V_K(t)$ of classical links to the f-polynomials $f_K(A)$ of virtual links by using bracket polynomials. In [4], M. Goussarov, M. Polyak and O. Viro introduced finite type invariants of virtual knots. In this paper, we give a necessary condition for a virtual knot invariant to be of finite type by using $t(a_1,{\cdots},a_m)$-sequences of virtual knots. Then we show that the higher derivatives $f_K^{(n)}(a)$ of the f-polynomial $f_K(A)$ of a virtual knot K at any point a are not of finite type unless $n{\leq}1$ and a = 1.

• 한국컴퓨터정보학회논문지
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• 제29권5호
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• pp.189-202
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• 2024

본 연구는 Q방법론을 적용하여 가상의류에 대한 주관적인 인식을 유형화하고 유형별 특성을 알아보고자 하였다. 가상의류에 대한 인식은 4개 유형으로 분석되었다. 제1유형은 가상의류 이용을 선호하고 가상의류가 맞음새를 파악하는 데 도움이 된다고 생각하는 가상의류 신뢰 맞음새 파악형이었다. 제2유형은 가상의류가 디자인 파악에 도움이 되고 모든 쇼핑몰에 가상의류 시스템이 도입되어야 한다고 생각하는 쇼핑몰 도입 긍정 디자인 파악형이었다. 제3유형은 가상의류가 환경오염을 줄여주고 실제 입을 수 없는 가상의류를 구매하고 싶어하는 환경오염 감소 가상의류 구매형이었다. 제4유형은 가상의류가 실제의복과 유사하고 가상의류가 쇼핑을 즐겁게 해준다고 생각하는 실제 의복 유사 즐거움 추구형이었다. 유형에 따라 아바타의 치수조절, 의복 디자인 표현 강화, 아바타 꾸미기 아이템 구비, 판매용 가상의류 제작 등이 요구되었다.

• 한국컴퓨터그래픽스학회논문지
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• 제25권3호
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• pp.115-122
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• 2019

본 연구에서는 사용자 참여를 유도하는 가상공간 스토리 북을 기획하고 구현하여 연구 실험 하였다. 구현한 스토리북은 시나리오를 진행하기 위해서 사용자가 적극적으로 시나리오상의 미션을 수행해야 시나리오가 진행이 되는 것이다. 가상공간 스토리 북의 시나리오를 진행하는 절차는 다음과 같다. 첫 번째, 프로젝션으로 가상공간을 구현한다. 두 번째, 시나리오에 맞추어 사용자는 실제 물체를 가져와 가상의 공간에 실제 물체를 삽입한다. 세 번째, 실제 물체와 대응되는 3D모델이 증강한다. 마지막으로 사용자는 증강된 이미지와 실제 물체를 자유롭게 제어함으로 가상공간에서 이루어지는 시나리오를 체험한다. 구현한 결과물은 3명의 5살 어린이들에게 유저 스터디를 진행하였다. 실험에 참여한 어린이는 가상공간 스토리북을 매우 잘 이해하는 모습을 보였으며 실제 물체를 가상의 공간에 집어넣는 과정을 이해하는 모습이 관찰되었다. 또한 어린이는 현실과 가상을 혼돈하지 않고 실제 물체와 가상 이미지를 구분하는 모습을 확인할 수 있었다. 결과적으로 가상공간 스토리 북을 통해 가상의 공간위에 실제 물체를 증강시키는, 방식을 가진 가상공간 스토리북의 가능성을 확인 할 수 있었다.

• Kyungpook Mathematical Journal
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• 제55권1호
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• pp.191-203
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• 2015

We introduce a quasitoric virtual braid and show that every virtual link can be obtained by the closure of a quasitoric virtual braid. Also, we show that the set of quasitoric virtual braids with n strands forms a group which is a subgroup of the n-virtual braid group.

• 산업공학
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• 제18권1호
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• pp.82-87
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• 2005

Most of virtual reality systems ask users to control 3D objects or to navigate 3D world using 3D controllers. To maximize the human performance in the control, the design of virtual reality system and its input and output devices should be optimized. In this study, an experiment was designed to investigate the effects of three resolution factors of a virtual reality system on the human performance. Six subjects conducted the experiment for the factors; two frame rates, three spatial resolutions, and three pictorial contents. The result showed that the greater the spatial resolution was, the higher the human performance was. For the temporal resolution, fixed frame rate at 18 Hz was better than the varied maximized frame rate. For the pictorial contents, the virtual space with orientation cues marked the greatest performance than the other two conditions; the virtual space without any orientation cue and the virtual space like real world. These results could be applied for the design of virtual reality systems.

• 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.

• 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.

• 소성∙가공
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• 제12권2호
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• pp.110-115
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• 2003

This paper is concerned with the compression test and forming process of flange by using virtual reality and analysis(simulation) program. This virtual manufacturing can be carried out one personal computer without any expensive devices for experiment. The virtual manufacturing composed of three modules such as the imput, calculation and the output modules on internet. Internet user can give the material's property and process parameters to the sever computer at the input module. On the calculation module, a simulator computes the virtual manufacturing process by analysis program and stores the data as a file. The output module is the program in which internet user can confirm virtual manufacturing results by showing tables, graphs, and 3D animation. This programs is designed by an internet language such as HTML, CGI, VRML and JAVA ,while analysis programs use the finite increasing, the virtual manufacturing technique will substitute many real experiments in the future.

• 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.