• Title/Summary/Keyword: Natural Interface

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A Study on the Characteristics of Interface Design at the Facade of Parking Garage (주차건물 파사드의 인터페이스 디자인 표현 특성 연구)

  • Moon, Eun-Mi
    • Korean Institute of Interior Design Journal
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    • v.20 no.5
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    • pp.135-142
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    • 2011
  • This study applies the 'interface' as the concept to interpret the facade design of parking garages. This study investigates the characteristics of interface design in the parking garages to improve design qualities of parking garages as a daily living space as well as a public space in today's city. The facade of parking garage is an interface between the urban streets and the parking space. Three concepts of interface and design in parking garage are defined. The concept of interface is explained as a boundary surface which activates communication and interaction. In facade design of parking garage, three main concepts of interface design are screen, communication and mobility. Through the investigation of the examples, this study summarizes the characteristics of the facade design of parking garage as follow; first, the facade of parking garage is designed as a screen which represents immateriality by specially selected and arranged surface materials. The screen facade is designed as one homogeneous surface as well as an irregular pattern with operable louvers. Second, the facade of parking garage is designed as a communication media to deliver direct information. The representation of natural or artificial characteristics at the local areas is to communicate with the people in the community. Third, the facade of parking garage is represented mobility which a car symbolizes. It emphasizes various movements and visual changes by movements. People can experience the visual changes of the building facade as they walk or drive. The visual changes of the facade are caused by natural elements such as wind and light as well as an optical illusion.

A Study on the Prevention of Crack Generated in Interface Cu and Epoxy with Painting of Carbon (카본 도포에 따른 Cu-Epoxy 접촉면에서 발생하는 크랙방지에 관한 연구)

  • 송재주;김성훈;황종선;박종광;한병성
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.14 no.7
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    • pp.578-583
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    • 2001
  • The bushing for high voltage and large and power should endure weight of itself and force of pushing from contact with circuit breaker. Like this, epoxy mold bushing has to be strong without fault. However, the external circumstances and internal factors was caused by partial discharge, flashover and dielectric breakdown. Therefore, to remove external factor of defect and to prevent the internal cracks and cavity generated from the contraction on interface of Cu-Epoxy, we should form semi-conductive layer on Cu bar by carbon. Then, the PD properties and the insulation qualities of epoxy mold type bushing was able to improved by roles of cushions for the direction of diameter and by effects fo natural sliding like as separated from conductor for the direction of length. So, in this work, we could prove the method of semi-conductive layer in making the long conductor.

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The Effects of Natural Convection on Macrosegregation during Alloy Solidification (합금 응고과정에서 자연대류가 거시편석에 미치는 영향)

  • Lee, Kyun-Ho;Mok, Jin-Ho;Lee, Jin-Ho
    • Proceedings of the KSME Conference
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    • 2000.04b
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    • pp.37-44
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    • 2000
  • Numerical investigation is made to study the effects of natural convection on the formation of macrosegregation of a Pb-Sn alloy solidification process in a 2-D confined rectangle mold. The governing equations are calculated using previous continuum models with SIMPLE algorithm doring the solidification process. In addition. to track the solid-liquid interface with time variations. the moving boundary condition Is adopted and irregular interface shapes are treated with Boundary-Fitted Coordinate system. As the temperature reduce from the liquidus to the solidus, the liquid concentration of Sn. the lighter constituent, increases. Then the buoyancy-driven flow due to temperature and liquid composition gradients, called thermosolutal convection or double diffusion, occurs in the mushy region and forms the complicated macrosegregation maps. Related to this phnomena, effects on the macrosegregation formation depending on the cooling condition and gravity values are described.

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Prototyping Training Program in Immersive Virtual Learning Environment with Head Mounted Displays and Touchless Interfaces for Hearing-Impaired Learners

  • HAN, Insook;RYU, Jeeheon;KIM, Minjeong
    • Educational Technology International
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    • v.18 no.1
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    • pp.49-71
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    • 2017
  • The purpose of the study was to identify key design features of virtual reality with head-mounted displays (HMD) and touchless interface for the hearing-impaired and hard-of-hearing learners. The virtual reality based training program was aimed to help hearing-impaired learners in machine operating learning, which requires spatial understanding to operate. We developed an immersive virtual learning environment prototype with an HMD (Oculus Rift) and a touchless natural user interface (Leap Motion) to identify the key design features required to enhance virtual reality for the hearing-impaired and hard-of-hearing learners. Two usability tests of the prototype were conducted, which revealed that several features in the system need revision and that the technology presents an enormous potential to help hearing-impaired learners by providing realistic and immersive learning experiences. After the usability tests of hearing-impaired students' exploring the 3D virtual space, interviews were conducted, which also established that further revision of the system is needed, which would take into account the learners' physical as well as cognitive characteristics.

Analysis of Natural Convection Heat Transfer and Solidification of a Two-Layered Pool (2층으로 성층화된 풀 내에서의 자연대류 열전달과 고화현상에 대한 연구)

  • Kim J.;Kang K. S.;Kim S. B.;Kim H. D.
    • Journal of computational fluids engineering
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    • v.6 no.1
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    • pp.1-13
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    • 2001
  • The natural convection heat transfer and solidification in a stratified pool are studied. The flow and heat transfer characteristics in a heat generating pool are compared between single-layered and double-layered pools. And local Nusselt number distributions on outer walls are obtained to consider thermal loads on a vessel wall. The cooling and solidification of Al₂O₃/Fe melt in a hemispherical vessel are simulated to study the mechanism of heat transfer and temperature distribution. A unstructured mesh is chosen for this study because of the non-orthogonality originated from the boundaries of double-layered pool. Interface between the layers is modeled to be fixed. With this assumption mass flux across the interface is neglected, but shear force and heat flux are considered by boundary conditions. The colocated cell-centered finite volume method is used with the Rhie-Chow interpolation to compute cell face velocity. To prevent non-physical solutions near walls in case body force is large the wall pressure is extrapolated by the way to include body force. The numerical solutions calculated by current method show that averaged downward heat flux of the double-layered pool increases compared to single-layered pool and maximum temperature occurs right below the interface of the layers.

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MPEG-U based Advanced User Interaction Interface System Using Hand Posture Recognition (손 자세 인식을 이용한 MPEG-U 기반 향상된 사용자 상호작용 인터페이스 시스템)

  • Han, Gukhee;Lee, Injae;Choi, Haechul
    • Journal of Broadcast Engineering
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    • v.19 no.1
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    • pp.83-95
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    • 2014
  • Hand posture recognition is an important technique to enable a natural and familiar interface in HCI(human computer interaction) field. In this paper, we introduce a hand posture recognition method by using a depth camera. Moreover, the hand posture recognition method is incorporated with MPEG-U based advanced user interaction (AUI) interface system, which can provide a natural interface with a variety of devices. The proposed method initially detects positions and lengths of all fingers opened and then it recognizes hand posture from pose of one or two hands and the number of fingers folded when user takes a gesture representing a pattern of AUI data format specified in the MPEG-U part 2. The AUI interface system represents user's hand posture as compliant MPEG-U schema structure. Experimental results show performance of the hand posture recognition and it is verified that the AUI interface system is compatible with the MPEG-U standard.

A Study on Implementing Kinect-Based Control for LCD Display Contents (LCD Display 설비 Contents의 Kinect기반 동작제어 기술 구현에 관한 연구)

  • Rho, Jungkyu
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.4
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    • pp.565-569
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    • 2014
  • Recently, various kinds of new computer controlled devices have been introduced in a wide range of areas, and convenient user interfaces for controlling the devices are strongly needed. To implement natural user interfaces(NUIs) on top of the devices, new technologies like a touch screen, Wii Remote, wearable interfaces, and Microsoft Kinect were presented. This paper presents a natural and intuitive gesture-based model for controlling contents of LCD display. Microsoft Kinect sensor and its SDK are used to recognize human gestures, and the gestures are interpreted into corresponding commands to be executed. A command dispatch model is also proposed in order to handle the commands more naturally. I expect the proposed interface can be used in various fields, including display contents control.

Human-Computer Natur al User Inter face Based on Hand Motion Detection and Tracking

  • Xu, Wenkai;Lee, Eung-Joo
    • Journal of Korea Multimedia Society
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    • v.15 no.4
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    • pp.501-507
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    • 2012
  • Human body motion is a non-verbal part for interaction or movement that can be used to involves real world and virtual world. In this paper, we explain a study on natural user interface (NUI) in human hand motion recognition using RGB color information and depth information by Kinect camera from Microsoft Corporation. To achieve the goal, hand tracking and gesture recognition have no major dependencies of the work environment, lighting or users' skin color, libraries of particular use for natural interaction and Kinect device, which serves to provide RGB images of the environment and the depth map of the scene were used. An improved Camshift tracking algorithm is used to tracking hand motion, the experimental results show out it has better performance than Camshift algorithm, and it has higher stability and accuracy as well.

The Definition of Data Structure for Design Knowledge Database and Development of the Interface Program for using Natural Language Processing (설계지식 데이터베이스의 자료구조 규명과 자연어처리를 이용한 인터페이스 프로그램 개발)

  • 이정재;이민호;윤성수
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.43 no.6
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    • pp.187-196
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    • 2001
  • In this study, by using the natural language processing of the field of artificial intelligence, automated index was performed. And then, the Natural Language Processing Interface for knowledge representation(NALPI) has been developed. Furthermore, the DEsign KnOwledge DataBase(DEKODB) has been also developed, which is designed to interlock the knowledge base. The DEKODB processes both the documented design-data, like a concrete standard specification, and the design knowledge from an expert. The DEKODB is also simulates the design space of structures accordance with the production rule, and thus it is determined that DEKODB can be used as a engine to retrieve new knowledge and to implement knowledge base that is necessary to the development of automatic design system. The application field of the system, which has been developed in this study, can be expanded by supplement of the design knowledge at DEKODB and developing dictionaries for foreign languages. Furthermore, the perfect automation at the data accumulation and development of the automatic rule generator should benefit the unified design automation.

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A STUDY OF THE SHEAR BOND STRENGTH OF METAL BRACKETS AND CERAMIC BRACKETS AND THE CONDITION AFTER DEBONDING (Metal bracket과 ceramic bracket의 전단 결합 강도와 debonding 상태에 관한 연구)

  • Yoon, Jung-Jin;Ryu, Young-Kyu
    • The korean journal of orthodontics
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    • v.22 no.2 s.37
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    • pp.327-343
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    • 1992
  • Metal brackets and ceramic brackets were bonded to natural teeth, porcelain crowns and gold crowns After stored in artificial saliva solution for 72 hours at $37^{\circ}C$, the shear bond strengths were measured by Instron and compared with them, the bonding sites and bracket bases were examined by scanning electron microscope and light optical stereomicroscope. The results were as follows: 1. The shear bond strengths of the group which metal brackets were bonded to natural teeth and the groups which ceramic brackets were bonded to natural teeth and porcelain crowns were comparable to each other, the shear bond strength of the group which metal brackets were bonded to gold crowns was significantly low. 2. The bond failed predominantly at the bracket base/adhesive interface with the bulk of adhesive remaining on enamel in the group which metal brackets were bonded to natural teeth. 3. The bond failed consistently at the crown/adhesive interface with all of adhesive remaining on the bracket babes in the group which metal brackets were bonded to gold crowns. 4. The bond failed at the enamel or crown/adhesive interface with the bulk of adhesive remaining on the bracket bases in the groups which cramic brackets were bonded to natural teeth and porcelain crowns. 5. The shear bond strengths of the groups which ceramic brackets were bonded to porcelain crowns were not affected by etching time.

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