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An Empirical Study on Tangible Augmented Reality Learning Space for Design Skill Transfer

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Tsinghua Science and Technology 2008年第S1期13卷 13-18页

作者： Rui Chen, Xiangyu Wang Design Lab., Faculty of Architecture, Design and Planning, The University of Sydney, Sydney nsw 2006, Australia. [a]Design Lab. Faculty of Architecture Design and Planning The University of Sydney Sydney nsw 2006 Australia

Tangible augmented reality (TAR) technology opens a novel realm which integrates the computer-generated elements into the real word. Its applications into design education have been explored with a limi-tation to this entire area. TAR offers an innovative learning space by merging digital learning materials into the format of media with tools or objects which are direct parts of the physical space. It is therefore conceived that such combination opens new perspectives in teaching and learning. This paper presented and evaluated one TAR system to improve the pedagogical effectiveness of experiential and collaborative learning process in urban design education. The results from the experiments were analyzed under a previously developed theoretical framework, which show that TAR can enhance the design activities in some collaborative work.

关键词： tangible interface augmented reality tangible augmented reality design learning physicality

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An Empirical Study on Augmented Virtuality Space for Tele-Inspection of Built Environments

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Tsinghua Science and Technology 2008年第S1期13卷 286-291页

作者： Xiangyu Wang, Rui Chen Key Centre of Design Computing and Cognition, Faculty of Architecture, Design and Planning, The University of Sydney, Sydney nsw 2006, Australia [a]Key Centre of Design Computing and Cognition Faculty of Architecture Design and Planning The University of Sydney Sydney nsw 2006 Australia

This paper describes an empirical study on an augmented virtuality (AV)-based system dedicated for tele-inspection of built environments. This system is regarded as a solution that allows users to experience the real remote built environment without the need of physically stepping into that actual place. Such experience is realized by using AV technology to enrich the virtual counterparts of the place with captured real images from the real space. Those integrated into the AV environment are real photos that represent key landmarks/features of the real place, live video streams of on-site crew, and 3D virtual design geome-tries. The focus of this paper is the implementation and evaluation of the AV system in its current state as compared with traditional photo-based methods. Results from this preliminary empirical study show that the AV system achieves good overall satisfaction, although it involves certain general usability issues.

关键词： augmented virtuality (AV) design usability remote inspection

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Fiber-optical Confocal Scanning MicroscopeUsing Single-mode Fiber Coupler

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Chinese Journal of Lasers 1996年第1期B5卷 81-86页

作者： FAN Zhifeng GU min WANG Guiying DING Zhihua(Shanghai Institute of Optics and Fine Mechanics, Academia Sinica,Shanghai 201800, China (Department of Physics Optics, The University of Sydney, Australia nsw 2006) Shanghai Inst of Optics and Fine mechanics Shanghai China

A fiber-based scanning optical microscope using fiber directional coupler is presented in this paper. One 2 × 2 single-mode coupler is used to launch the laser into microscope and to detect the image signal, which makes the system compact. This new style microscope does confocal imaging and appears a strong optical-sectioning effect. Based on the 3-D coherent transfer function theory the axial and lateral properties are calculated and measured by a perfect-reflection planar object.

关键词： fiber-coupler confocal seanning microscope imaging property

Regulation of cellular adhesion molecule expression in murine oocytes, peri-implant ation and post-implantation embryos

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Cell Research 2002年第Z2期 373-383页

作者： DAVID P LU, LINA TIAN, CHRIS O’ NEILL, NICHOLAS JC KING Department of Pathology, University of Sydney, nsw 2006 AustraliaHuman Reproduction Unit, Department of Physiology, University of Sydney, Royal North Shore Hospital, nsw 2065, Australia

Expression of the adhesion molecules, ICAM-1, VCAM-1, NCAM, CD44, CD49d (VLA-4, a chain), and CDlla (LFA-1, a chain) on mouse oocytes, and pre- and peri-implantation stage embryos was examined by quantitative indirect immunofluorescence microscopy. ICAM-1 was most strongly expressed at the oocyte stage, gradually declining almost to undetectable levels by the expanded blastocyst stage. NCAM, also expressed maximally on the oocyte, declined to undetectable levels beyond the morula stage. On the other hand, CD44 declined from highest expression at the oocyte stage to show a second maximum at the compacted 8-cell/morula. This molecule exhibited high expression around contact areas between trophecto-derm and zona pellucida during blastocyst hatching. CD49d was highly expressed in the oocyte, remained significantly expressed throughout and after blastocyst hatching was expressed on the polar trophecto-derm. Like CD44, CD49d declined to undetectable levels at the blastocyst outgrowth stage. Expression of both

关键词： CDlla/CD18 CD49d CD44 CD54 CD56 CD106 Embryo.

Smooth Hydrogen-free and Super-hard Carbon Films From Energetic Condensation Using Cathodic Arc Deposition

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Smooth Hydrogen-free and Super-hard Carbon Films From Energe...

1996年中国青年学者物理学讨论会

作者： Y.Yin(School of Physics,University of Sydney,nsw,2006,Australia)

＜正＞Introduction Smooth and super-hard carbon films with tetrahedrally bonded hydrogen-free structures can be produced using filtered cathodic arc deposition（FCAD）*** hard carbon material, also known as tetrahedra...

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Stress Analysis of Curved Joints with Non-uniform Bondline Thickness

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Stress Analysis of Curved Joints with Non-uniform Bondline T...

第十三届国际复合材料会议

作者： Liyong Tong and Xiannian Sun Department of Aeronautical Engineering University of Sydney nsw 2006 AUSTRALIA

＜正＞Adhesive bonding has been used to join metallic and composite structural components to achieve their designated structural stiffness and strengths. Current analysis methods and empirical databases for composite bonded joint design are limited to flat joint with uniform thickness of adhesive layer. However, it is practical that the adhesive layer in a bonded joint is often non-uniform due to primarily lack of technologies for accurate control of bondline thickness in manufacturing structural components, especially for a curved joint. The effect of non-uniform adhesive layer thickness on stress in bonded joint is still unknown. In this paper,

关键词： bonded joints curvature non-uniform bondline thickness stress adhesive element

Micro-Electromechanics Models for the Electro-Magneto-Elastic Properties of PEMFRC Materials

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Micro-Electromechanics Models for the Electro-Magneto-Elasti...

第十三届国际复合材料会议

作者： Liyong Tong and Ping TanSchool of Aerospace, Mechanical and mechatronic Engineering, University of Sydney, nsw 2006, Australia

In this paper, two micro-mechanics models referred to as ’XY PEMFRC model’ and ’YX PEMFRC model’ are proposed for predicting the electro-magneto-elastic properties for unidirectional piezoelectric-magnetic fiber reinforced composite (PEMFRC) materials. Both models are then used to investigate the effect of the fiber volume fraction V

关键词： micro-electromechanics models piezoelectric-magnetic fiber reinforced composite materials effective electro-magneto-elastic properties single loading condition multiple loading condition iso-field assumption

Misfit Dislocations in Strained-layer Semiconductor Heterostructures

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Misfit Dislocations in Strained-layer Semiconductor Heterost...

1996年中国青年学者物理学讨论会

作者： J.Zou(Electron Microscope Unit & Australian Key Centre for Microscopy and Mieroanalysis The University of Sydney,nsw 2006,Australia)

＜正＞Strained-layer semiconductor heterostructures play a very important role in electronic and optoelectronie devices,because the electronic properties differ from those of single semiconductor materials and of latt...

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Computer simulation on reliability of retention index with FDG-PET and optimization of dual-time-point imaging protocol

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Progress in Natural Science:Materials International 2008年第8期18卷 931-937页

作者： Rui Jia a, Jing Bai a,*, Lingfeng Wenb,c, Dagan Fengb,c a Department of Biomedical Engineering, Tsinghua University, Room B209, Building of Medical Science, Beijing 100084, China b School of Information Technologies, University of Sydney, nsw 2006, Australia c Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Hong Kong Department of Biomedical Engineering Tsinghua University Room B209 Building of Medical Science Beijing 100084 China School of Information Technologies University of Sydney NSW 2006 Australia Department of Electronic and Information Engineering Hong Kong Polytechnic University Hong Kong

The inherent noise in positron emission tomography (PET) leads to the instability of quantitative indicators, which may affect the diagnostic accuracy for differentiating malignant and benign lesions in the management of lung cancer. In this paper, the reliability of retention index (RI) is systematically investigated by using computer simulation for the dual-time-point imaging protocol. The area under the receiver operating characteristic (ROC) curve is used to evaluate the optimal protocol. Results demonstrate that the reliability of RI is affected by several factors including noise level, lesion type, and imaging schedule. The RIs with small absolute values suffer from worse reliability than those larger ones. The results of ROC curves show that over delayed second scan cannot help to improve the diagnostic performance further, while an early first scan is expected. The method of optimization based on ROC analysis can be easily extended to comprise as many lesions as possible.

关键词： Reliability Retention index PET (positron emission tomography) Simulation ROC (receiver operating characteristic)