• Proceedings of the Korean Information Science Society Conference
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• 2010.06b
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• pp.216-221
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• 2010

초기 전자악기를 만드는 사람들은 자신들이 직접 만든 터치 장치를 사운드 조절에 이용하였다. 1982년에 첫 멀티터치 시스템이 개발되었고 21세기 초까지 많은 연구와 멀티터치 시스템의 성능 향상에도 불구하고 대중화의 길은 요원해 보였다. 그러나 2007년 애플의 아이폰을 시작으로 멀티터치 인터페이스는 큰 인기를 끌게 되었고 스마트폰을 통해서 대중들이 멀티터치 인터페이스의 특징을 보다 쉽게 체험 할 수 있게 되었다. 이러한 흐름 속에서 멀티터치 인터페이스는 자연스럽게 사람들의 주목을 받으며 다양한 가능성을 보이고 있지만 관련 콘텐츠의 부재와 개발 인프라의 부족으로 인해 대중화의 길로 다가서기에는 여전히 부족한 현실이다. 본 논문에서는 현재의 멀티터치 인터페이스의 문제점을 지적하고 멀티터치 인터페이스 시장의 활성화와 멀티 터치 관련 콘텐츠 제작자를 위한 범용 멀티터치 인터랙션 시스템을 제안한다. 실험을 통해 제안한 시스템의 효율성을 입증하고 나아가 멀티터치 콘텐츠 시장이 발전할 수 있는 방안을 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.353-354
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• 2009

최근 사용자의 다중 입력이 가능한 멀티 터치(Multi-Touch) 기술은 HCI(Human Computer Interaction) 분야에서 가장 주목 받고 있는 기술 가운데 하나이다. 그러나 이러한 터치 기술은 입력 장치에 의존적이기 때문에 공간적 제약의 문제를 지니고 있다. 따라서 본 논문에서는 멀티 터치 디스플레이 장치에서 사용자 입력 처리를 위해서 사용되는 확산 투광(DI: Diffused illumination)방식을 이용하여 사용자 입력에 있어서 공간적 제약이 없는 공간 마우스를 구현한다. 제안하는 공간 마우스는 기본적인 마우스 이벤트 처리뿐만 아니라 확장된 사용자 멀티 제스쳐를 위한 성능 향상 방안을 제시한다. 구현된 공간 마우스는 윈도우 어플리케이션 사용 환경에 적용한 결과 성공적인 결과를 보였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.6B
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• pp.674-682
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• 2011

The multi-function console system in ships has currently exposed operational difficulties due to its complex interfaces although it supports a variety of functionalities. In this paper the concept of a human computer interaction (HCI) based multi-function console system is proposed, which can support intuitive operation environments by the analysis of users' needs to shipboard systems. Expert interviews and surveys are carried out in order to obtain users' requirements. Through the survey results, the HCI based multi-function console system is conceptually designed, which is optimized to the input of multi-touch screen. It is expected that the HCI based multi-function console system can provide ship operators with easy interfaces to the console system as well as safe operation in a rough ocean environment.

• Journal of Ocean Engineering and Technology
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• v.26 no.3
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• pp.61-65
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• 2012

Air-water flow measurements are of importance for the coastal and ocean engineering fields. Although kinematic investigations of the multi-phase flows have been conducted for long time, velocity measurements still are concerned with many researchers and engineers in coastal and ocean areas. In the present study, an imaging technique using shadowgraphy and fiber optic probe for velocity measurements of air bubbles is introduced. The shadow graphy image technique is modified from the typical image velocimetry methods, and optical fibers are used for the well-known intrusive coupled phase-detection probe system. Since the imaging technique is a non-intrusive optical method from the air, it is usually applied for 2D flows. On the other hand, the double fiber optic probes touch flows regardless of flow patterns. The results of the flow measurements by both methods are compared and discussed. The methods are also applied to the measurements of overtopping flows by a breaking wave over the structure fixed on the free surface.

• Journal of the Semiconductor & Display Technology
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• v.18 no.4
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• pp.81-86
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• 2019

According to the needs of many users, motor pumps have been steadily developed and widely used in many industries where fluids are used. Motor pumps are used in a variety of environments, degrading quality and performance. It is becoming important to monitor the condition of motor pumps in order to maintain system performance and increase efficiency. This paper presents the method for effectively monitoring the condition of motor pumps. The designed MMI controller receives the collected data through data logging and output and controls the motor pump with touch screen. Implementing a Wi-Fi monitoring system and SCADA monitoring system based on Ethernet and RS485, user can monitor even if the user is far from the MMI controller without time and space limitation. In addition, by implementing a voice output system, the user can immediately recognize the situation through the sound. Therefore, through the proposed method, multi-monitoring system solves the cause of breakdowns and degradation of motor-pump and gives the possibility of commercialization by providing the convenience of maintenance to users.

• Science of Emotion and Sensibility
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• v.24 no.3
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• pp.41-60
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• 2021

The purpose of this research was to determine whether multimodal cues in an online shopping environment could enhance tactile consumer mental imagery, purchase intentions, and attitudes towards an apparel product. One limitation of online retail is that consumers are unable to physically touch the items. However, as tactile information plays an important role in consumer decisions especially for apparel products, this study investigated the effects of multimodal cues on overcoming the lack of tactile stimuli. In experiment 1, to explore the product, the participants were randomly assigned to four conditions; picture only, video without sound, video with corresponding sound, and video with discordant sound; after which tactile mental imagery vividness, ease of imagination, attitude, and purchase intentions were measured. It was found that the video with discordant sound had the lowest average scores of all dependent variables. A within-participants design was used in experiment 2, in which all participants explored the same product in the four conditions in a random order. They were told that they were visiting four different brands on a price comparison web site. After the same variables as in experiment 1, including the need for touch, were measured, the repeated measures ANCOVA results revealed that compared to the other conditions, the video with the corresponding sound significantly enhanced tactile mental imagery vividness, attitude, and purchase intentions. However, the discordant condition had significantly lower attitudes and purchase intentions. The dual mediation analysis also revealed that the multimodal cue conditions significantly predicted attitudes and purchase intentions by sequentially mediating the imagery vividness and ease of imagination. In sum, vivid tactile mental imagery triggered using audio-visual stimuli could have a positive effect on consumer decision making by making it easier to imagine a situation where consumers could touch and use the product.

• Journal of the Microelectronics and Packaging Society
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• v.23 no.3
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• pp.21-29
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• 2016

In this paper, we developed a flexible transparent capacitive pressure sensor which can recognize X and Y coordinates and the size of force simultaneously by sensing a change in electrical capacitance. The flexible transparent capacitive pressure sensor was composed of 3 layers which were top electrode, pressure sensing layer, and bottom electrode. Silver nanowire(Ag NW)/poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) hybrid film was used for top and bottom flexible transparent electrode. The fabricated capacitive pressure sensor had a total size of 5 inch, and was composed of 11 driving line and 19 sensing line channels. The electrical, optical properties of the Ag NW/PEDOT:PSS and capacitive pressure sensor were investigated respectively. The mechanical flexibility was also investigated by bending tests. Ag NW/PEDOT:PSS exhibited the sheet resistance of $44.1{\Omega}/square$, transmittance of 91.1%, and haze of 1.35%. Notably, the Ag NW/PEDOT:PSS hybrid electrode had a constant resistance change within a bending radius of 3 mm. The bending fatigue tests showed that the Ag NW/PEDOT:PSS could withstand 200,000 bending cycles which indicated the superior flexibility and durability of the hybrid electrode. The flexible transparent capacitive pressure sensor showed the transmittance of 84.1%, and haze of 3.56%. When the capacitive pressure sensor was pressed with the multiple 2 mm-diameter tips, it can well detect the force depending on the applied pressure. This indicated that the capacitive pressure sensor is a promising scheme for next generation flexible transparent touch screens which can provide multi-tasking capabilities through simultaneous multi-touch and multi-force sensing.

• Journal of Korea Multimedia Society
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• v.16 no.2
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• pp.190-197
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• 2013

Since domestic and foreign platform companies and mobile carriers adopt and use different kinds of smart platforms, developers should develop or convert contents according to each smart platform to provide a single smart content for customers. It takes long time and a lot of money to convert the conventional smart contents in order to serve other smart platforms. For the reason, more attention has been paid on Smart Cross Platform or Hybrid Platform, the core technologies of OSMU(One Source Multi Use) in which, once a program is coded, it can be executed in any platforms regardless of development languages. As a result, PhoneGap and HTML5 based Sencha Touch have been introduced. In this paper, we developed the smart virtual machine, which is built in smart cross platform based smart devices, unlike Android, iOS, Windows Phone devices being dependent of platforms, and helps to download and execute applications, being independent of platforms. the smart virtual machine supports C/C++, and Java language, being differentiated from JVM by sun microsystems that supports only Java language and .NET framework by microsoft that supports only C, C++ and C#. Therefore, it provides contents developers with the environment where they can get a wide range of options in choosing a language and develop smart contents.

• Journal of Korea Game Society
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• v.10 no.2
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• pp.57-66
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• 2010

In the prior works on tabletop systems, a projection-based tabletop surface is mostly used to display computer images, and the participants interact with the display surface by hand multi-touching or using some tangible objects. In this research, however, we developed the FishBowl game that employs a scalable tabletop tiled display with infrared camera tracking coupled with PDA mobile interfaces. The focus of this game is to enhance user interactivity and realistic experience by coupling the high-resolution tabletop virtual environment and PDA mobile interface. This paper describes the game design followed by the system design and its detailed implementations. It also discusses the system usability and recommendation for its improvements after interviewing game players and then concludes with future research directions.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.05a
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• pp.280-285
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• 2001

폴리우레탄 코팅포의 촉감을 예측하기 위하여 신경망 이론이 사용되었다. 본 연구에서는 Neural Connection의 MLP(Multi Layer Perceptron)를 신경망 분석에 사용하였으며, 학습 알고리즘은 백프로파게인션(Backpropagation)을 이용하였다. 사용된 변수는 KES-FB시스템에서 측정된 17가지 역학적 특성치를 설명변수, 촉감치를 목표변수로 하였다. 폴리우레탄 코팅포의 촉감을 정확하게 예측할 수 있는 신경망 모델을 찾기 위해, 은닉층의 노드수를 8에서 34로 변화시켜 보았다. 또한 MLP적용함수로 선형함수, 비선형 시그모이드함수, 탄젠트 함수를 사용하여 목표변수를 예측하여 모형의 정확도를 살펴보았다. 구축된 신경망모델은 17가지 역학적특성치 자료를 이용하여 학습되었으며 학습 완료 후 학습에 사용되지 않은 시료를 시스템에 적용하여 학습된 신경망 시스템이 촉감을 평가하게 한 후 주관적으로 평가된 촉감치와 비교하여 본 시스템의 판단의 정확성을 평가하도록 하였다. 은닉층의 노드수와 MLP적용함수는 촉감예측에 영향을 미치는 것으로 나타났는데, 촉감 예측에 가장 적절한 모형은 MLP 적용함수가 탄젠트 함수이고 노드수가 22인 것으로 나타났다. 신경망을 통한 폴리우레탄 코팅포의 촉감 예측력은 선행연구에서 이용된 통계적 방법보다 높게 나타나 폴리우레탄 코팅포의 촉감예측에 신경망의 이용은 효과적인 것으로 밝혀졌다.