• 한국의류산업학회지
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• 제11권2호
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• pp.308-314
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• 2009

In creating an avatar, consumers can find out for themselves their own sizes to be entered. Also, putting in a face creation main-page menu option enables clients to make up their faces and match them to their bodies. Through this process when purchasing clothes through the internet consumers can enter their own body sizes and create avatars that are identical to their body shape. The uniqueness of developed prototype is that it creates an avatar similar to one's body shape according to body size inputs and demonstrates visually to customers the on-line comfort test which was only available off-line traditionally. The avatar follows the movement of mouse from left to right which enables 3 dimensional visualization. Through maximizing the visual effect this research focuses on enabling consumers to feel subjective parts as if they are off-line. This study seeks to provide a type of prototype of an online shopping mall that meets the demand of the consumers using the 3D avatar.

• 한국CDE학회논문집
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• 제12권2호
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• pp.87-94
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• 2007

The functional behavior of a consumer electronic product is nearly all expressed with human-machine interaction (HMI) tasks. Although physical prototyping and computer aided design (CAD) software can show the appearance of the product, they cannot properly reflect its functional behavior. In this paper, we propose an approach to virtual prototyping (VP) that incorporates HMI functional simulation into virtual reality techniques in order to enables users to capture not only the realistic look of a consumer electronic product but also its functional behavior. We adopt state transition methodology to capture the HMI functional behavior of the product into a state transition chart, which is later used to construct a finite state machine (FSM) for the functional simulation of the product. The FSM plays an important role to control the transition between states of the product. We have developed a VP system based on the proposed approach. The system receives input events such as mouse clicks on buttons and switches of the virtual prototype model, and it reacts to the events based on the FSM by activating associated activities. The system provides the realistic visualization of the product and the vivid simulation of its functional behavior using head-mounted displays (HMD) and stereo speakers. It can easily allow users to perform functional evaluation and usability testing. A case study about the virtual prototyping of an MP3 player is given to show the usefulness of the proposed approach.

• 한국의류산업학회지
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• 제13권4호
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• pp.624-634
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• 2011

The purpose of this study is to develop the pattern of safety clothes used at flat or mountainous areas and to identify the pattern of safety clothes by conducting experimental evaluation of virtual wear. Three subjects were selected, based on fire fighters' physical constitution. A prototype design for safety clothing was determined after in-depth interviewing of professionals and surveying of Forest service staff and related agency. Wearing test should be carried out in the order of pattern making, virtual and real wearing evaluation. For data analysis, technical statistical values should be obtained by using body measurements of subject, frequency analysis and T-test. The jacket is designed to have a front extension and the entire length of clothing enough for wearer to put on it over ordinary shirts or sweater. The collar of jacket is of round type. Cyber reality enables to identify the movement and activity of virtual fitting model and to find out errors or problems in safety clothing prior to on-the-spot wear test, thus raising the precision level of pattern. There was significant difference between real and virtual fit preference. The results show that the virtual try-on system need the development of a specific style.

• 디자인학연구
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• 제17권4호
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• pp.191-200
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• 2004

발의 건강은 개인의 건강과 직결되어 인체 활동의 능률에 직접적인 영향을 미친다. 발의 기능을 효과적으로 보조하고 있는 도구로서의 신발은 발을 보호하면서 지면으로부터의 충격을 흡수하도록 설계되어야 하는 데 디자인과 함께 착용성, 기능성, 그리고 경제성의 세 가지 요건이 요구된다. off-line 상점에서의 신발 구매는 소비자가 직접 신발을 착용해 봄으로써 어느 정도 자신의 발에 맞는 신발을 선택할 수 있다. 그러나 On-Line의 경우에는 여러 가지 문제점이 발행한다. 첫째, 소비자 혼자의 힘으로 구매와 관련된 정보 탐색과정을 진행해 나가야 하기 때문에 소비자의 인지적 부담이나 절대적인 정보 처리능력은 한계를 나타낼 수밖에 없으며, 둘째, 소비자들은 구매과정에서의 디자인, 착용기능성 등과 같은 중요한 정보를 정확하게 전달받지 못하기 때문에 신중한 판단을 내리지 못하는 것이다. 상기 내용을 살펴볼 때 사용자 중심의 인터넷 쇼핑에 대한 해결방안은 사용자들이 쉽게 접근할 수 있는 새로운 형태의 Prototype의 개발이며, Prototype에 따른 Interface를 통해 3D 가상현실로 내용면에서 소비자들이 정확한 판단을 할 수 있도록 정보를 시각화하여 전달하는 것이다. 이에 따른 본 연구의 목적은 기존의 신발류 인터넷 구매 사이트의 문제점을 고찰하여 개선된 신발류 이지오더 Prototype을 개발함으로써 신발류 착용 적합성에 관한 인터넷 구매의 위험성을 줄이고 구매의 편의성을 제공하고자 하는 것이다. 1. 소비자가 자신이 선택한 신발에 대한 2D 평면화를 출력해 봄으로써 자신의 발 사이즈 및 형태와 직접 비교할 수 있도록 하는 것이다. 2. 3D 가상현실로 이지오더 Prototype을 개발함으로써 소비자는 구매하고자 하는 신발의 디자인에 대해서 소비자 중심의 이미지를 최대한 경험할 수 있게 하는 것이다. 그리고 이상의 연구 결과는 각종 산업제품 뿐 아니라 향후 거동이 불편한 장애인들을 위한 신발류의 이지오더 Prototype 개발에도 큰 영향을 미칠 수 있는 중요한 사례가 될 것이다.

• International Journal of Precision Engineering and Manufacturing
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• 제8권1호
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• pp.32-37
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• 2007

The outer diameter finishing grinding process required for ferrules, which are widely used as fiber optic connectors, is carried out by high-precision centerless grinding machines. In this study, the thermal characteristics of such a machine, for example, the temperature distribution, temperature rise, and thermal deformation, were estimated based on a virtual prototype and the heat generation rates of heat sources related to normal operating conditions. The prototype consisted of a concrete-filled bed. hydrostatic grinding wheel (GW) and regulating wheel (RW) spindle systems, a hydrostatic RW feed mechanism, a RW swivel mechanism, and on-machine GW and RW dressers. The reliability of the predicted results was demonstrated using temperature characteristics measured from a physical prototype. The predicted and measured results indicated that this particular high-precision centerless grinding machine had very stable thermal characteristics.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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• pp.155-161
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• 2001

Federated process framework is introduced responding to market\\`s needs to gain benefits of process information sharing in a virtual enterprise. The framework is verified by implementing its prototype system. However, it is very difficult to integrate developed prototype system with operating legacy systems to show its applicability. Thus, a test bed approach is widely adopted to provide a system environment that imitates the operations of real legacy systems and their interactions. In this paper, we described implementation detail of test bed imitating the real-world workflow systems. We also show its contribution and results of the prototype system that was implemented on the test bed.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 추계학술대회 논문요약집
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• pp.266-266
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• 2003

• 한국의류학회지
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• 제47권2호
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• pp.295-310
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• 2023

The current virtual fashion influencers are a hyper-real prototype in that it has a higher presence than the virtual humans in the past. Also, they are leading fashion trend with more than tens of thousands of followers on social media. This study investigated the physical and social presence of virtual fashion influencer perceived by consumer and verified effects on evaluation attributes of influencers and the relationship maintenance behavior. A total of 321 Korean women in their 20s and 30s who have Instagram account participated in the online survey. The data was analyzed using AMOS 23.0. The results revealed that the physical presence had a significant impact on attractiveness of virtual fashion influencers. In case of social presence had a positive effect on friendliness and reliability of virtual fashion influencers. In addition, evaluation attributes of virtual fashion influencers' friendliness, attractiveness and reliability in the order of influence on relationship maintenance behavior. This study suggested that the development of social presence of virtual fashion influencers with friendliness and attractiveness is more important than the physical presence that has already reached a high level.

• 한국게임학회 논문지
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• 제15권1호
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• pp.27-34
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• 2015

본 논문은 기존 립모션 장비에 홀로그램과 햅틱 장비를 결합함으로써 향상된 몰입감과 사용 용이성을 제공할 수 있는 사용자 인터페이스를 제시한다. 립모션은 사용자 손동작의 물리적 행동이 직접 가상의 화면상에 영향을 주는 장치인데, 화면상의 가상 손모양을 제어해야 한다는 점과 가상환경에서의 영향을 사용자에게 전달할 수 없다는 한계를 가진다. 우리는 홀로그램을 립모션과 결합시켜 사용자로 하여금 실제 손과 가상 화면을 같은 공간에 배치함으로써 몰입감을 향상시킨다. 아울러 사용자의 손에 촉각을 전달할 수 있는 햅틱 장비를 장착하여 감각의 상호 작용을 실현하는 프로타입을 제시한다.

• Journal of Radiation Protection and Research
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• 제45권1호
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• pp.35-44
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• 2020

Background: Cadmium zinc telluride (CZT) is a promising material because of a high detection efficiency, good energy resolution, and operability at room temperature. However, the cost of CZT dramatically increases as its size increases. In this study, to achieve a large effective volume with relatively low cost, an array structure comprised of individual virtual Frisch-grid CZT detectors was proposed. Materials and Methods: The prototype consisted of 2 × 2 CZTs, a holder, anode and cathode printed circuit boards (PCBs), and an application-specific integrated circuit (ASIC). CZTs were used and the non-contacting shielding electrode method was applied for virtual Frisch-grid effect. An ASIC was used, and the holder and the PCBs were fabricated. In the current system, because the CZTs formed a common cathode, a total of 5 channels were assigned for data processing. Results and Discussion: An experiment using ¹³⁷Cs at room temperature was conducted for 10 minutes. Energy and timing information was acquired and the depth of interaction was calculated by the timing difference between the signals of both electrodes. Based on obtained three-dimensional position information, the energy correction was carried out, and as a result the energy spectra showed the improvements. In addition, a Compton image was reconstructed using the iterative method. Conclusion: The virtual Frisch-grid CZT detector based on the array structure was developed and the energy spectra and the Compton image were successfully acquired.