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作者： Thiessen, Tina Gutschke, Martin Blanke, Philipp Mathis, Wolfgang Wolter, Franz-Erich Institute of Theoretical Electrical Engineering Leibniz University of Hannover D-30167 Hannover Germany Welfenlab. Division of Computer Graphics Leibniz University of Hannover D-30167 Hannover Germany

ISBN: (纸本)9788390474342

The difficulties to analyse the state space of a special class of nonlinear electronic circuits are illustrated and a new method to treat these problems is presented. Theoretical aspects of circuit equations from a differential geometric point of view are considered and methods for solving circuit equations by means of algorithms from computational differential geometry are presented. In this paper differential geometric methods were applied to a relaxation oscillator and numerical results were achieved. We describe the behaviour of an emitter-coupled multivibrator with differential algebraic equations and compute its state space numerically. Copyright © 2010 by institute of Electronics, Silesian University of Technology.

关键词： Numerical methods

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Thermal simulation of heterogeneous GaN/ InP/silicon 3DIC stacks

Thermal simulation of heterogeneous GaN/ InP/silicon 3DIC st...

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International 3D Systems Integration Conference, 3DIC 2015

作者： Harris, T. Robert Wyers, Eric J. Lee, Wang Graham, Samuel Pavlidis, Georges Franzon, Paul D. Davis, W. Rhett Department of Electrical and Computer Engineering North Carolina State University RaleighNC United States Department of Engineering and Computer Science Tarleton State University StephenvilleTX United States Calibre Design Solutions Mentor Graphics Corporation FremontCA United States Department of Mechanical Engineering Georgia Institute of Technology AtlantaGA United States

ISBN: (纸本)9781467393850

Integration of materials such as GaN, InP, SiGe, and Si is a natural extension of the 3D-IC perspective and provides a unique solution for high performance circuits. In this approach, application of a component is no longer dependent on semiconductor material selection. In this paper, preliminary results are presented which examine the thermal performance of the technology. A thermal analysis prototype solution in Mentor graphics™ Calibre® provides surface heat maps based on IC layout, material property, and geometric configuration files. Chiplets are connected by heterogeneous interconnect (HIC). Differences in thermal performance of GaN and InP chiplets are explored by varying the number of HICs. Two methods for building up the model of a test chip are compared. One method uses custom scripts to place discrete blocks in the model to represent HICs, while the other uses thermal material properties extracted from the layout. Measurements presented confirm simulated results. © 2015 IEEE.

关键词： Gallium nitride

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An efficient coordinated checkpointing approach for distributed computing systems with reliable channels

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International Journal of computers and Applications 2012年第1期34卷 1-10页

作者： Awasthi, Lalit K. Misra, Manoj Joshi, Ramesh C. India Electronics and Computer Engineering Department Indian Institute of Technology Roorkee India Graphics Era University Dehradun India

In distributed systems, likelihood of failure increases with increase in the number of processes and a single failure often renders the entire system state useless. Checkpointing and rollback recovery is a common technique used for increasing the system reliability against various anticipated and unanticipated failures. Checkpointing can be independent, quasi-synchronous and coordinated. Coordinated checkpointing can be blocking or non-blocking. Also, either all the processes in the distributed system may need to checkpoint or only a minimum number of processes may be required to checkpoint. Minimizing the number of processes to checkpoint may introduce blocking. The non-blocking checkpointing protocols introduce overhead of piggybacking some information for non-intrusiveness. Minimization of this piggybacked information is the objective of our work. We have designed a non-blocking coordinated checkpointing protocol for distributed systems with reliable communication channels that minimize piggybacked information on each message.

关键词： Distributed computer systems

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Three dimensional adjustable cavity for flexible singulation of multiple medications in an automated medication dispenser

Three dimensional adjustable cavity for flexible singulation...

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IEEE International Conference on Automation Science and engineering (CASE)

作者： C. K. Toh S. L. J. Ng Y. O. Tan Human Factors Engineering Programme Computer Graphics and Interface Department Institute of Infocomm Research Singapore

In the development of an effective medication management system to improve medication adherence, the challenge of flexibly dispensing of medications of multiple sizes and shapes was encountered. It is found that most of the medication dispensers in the market, as well as the feeding and orienting mechanisms in manufacturing sector, are customized to be operated with objects of specific size. In view of the inflexibility of those mechanisms, we proposed a novel method to handle and singulate medications of different sizes and shapes. A three dimensional adjustable cavity is designed as a carrier to separate and dispense one pill at a time. Rotational reciprocating vibration is then designed to provide centrifugal effect to the objects in hopper, in order to assist the singulation. An angle inclination test has been performed on the prototype built to investigate the optimum inclination of the feeding hopper. Preliminary testing has shown propitious results for dispensing round shape tablets of various sizes. The prototype built validated the concept of three dimensional adjustable cavity as a novel singulation technique. The mechanism is not only restricted to the dispensing of various sizes of pills, but has the potential to be implemented in dispensing or feeding of other objects in applications like vending machine, manufacturing system and etc.

关键词： Cavity resonators Shape Prototypes Algorithm design and analysis Tracking Throughput Sorting

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Retrospective: The J-Machine 98

Retrospective: The J-Machine

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25th International Symposium on computer Architecture, ISCA 1998

作者： Dally, William J. Chang, Andrew Chien, Andrew Fiske, Stuart Horwat, Waldemar Keen, John Lethit, Richard Noakes, Michael Nuth, Peter Spertus, Ellen Wallach, Deborah Wills, D. Scott Computer Systems Laboratory Stanford University United States Department of Computer Science University of Illinois Urbana-Champaign United States Department of Electrical and Computer Engineering Georgia Institute of Technology United States Netscape Communications Equator Technologies Consulting Hewlett Packard Laboratories Department of Computer Science Mills College Dec Western Research Laboratory Silicon Graphics Computer Systems

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Virtual housing design experience platform

Virtual housing design experience platform

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International Conference on Multimedia Technology

作者： Dai, Dameng Ding, Jianhao Wang, Yigang College of Physics and Electronic Information and Engineering Wenzhou University Wenzhou China Institute of Computer Graphics and Image Processing Hangzhou Dianzi University Hangzhou China State Key Laboratory of CAD and CG Zhejiang University Hangzhou China

ISBN: (纸本)9781424478743

Traditional display fashions of housing design mainly depend on static pictures, which are short of the intuition of house space and do not support interaction during design periods. This paper proposes a virtual housing design experience platform consist of a cheap hardware VR environment and housing design software system we developed. With this design platform, a fast generating virtual house permits intuitive and precise interaction in the VR environment. Customers can modify the design of their home and have a pseudo experience of their virtual house in real time. The system will give advice on layout design, providing a complete and precise house space representation and the support for real time visualization. ©2010 IEEE.

关键词： Virtual reality

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Application-Oriented Extensions of Profile Flags

Application-Oriented Extensions of Profile Flags

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8th Joint Eurographics/IEEE VGTC Symposium on Visualization, EuroVis 2006

作者： Mlejnek, Matej Ermes, Pierre Vilanova, Anna van der Rijt, Rob van den Bosch, Harrie Gerritsen, Frans Gröller, M. Eduard Institute of Computer Graphics and Algorithms Vienna University of Technology Austria Philips Medical Systems Best Netherlands Department of Biomedical Engineering Technische Universiteit Eindhoven Netherlands Catharina Hospital Eindhoven Netherlands

ISBN: (纸本)3905673312

This paper discusses two applications of probing dense volumetric data for MR orthopedics and dynamic contrast enhanced MRI mammography. In order not to reduce the context information and to extract the essential part of the data, we apply Profile Flags. A Profile Flag is a 3D glyph for probing and annotating the volumetric data. The first application area deals with visualization of T2 profiles for interactive inspection of knee cartilage and detection of lesions. In the second application, we present the usability the Profile Flags for measuring of time-signal profiles for a set of time-dependent MR volumes. Several extensions of the basic Profile Flag concept are described in detail and discussed. These extensions include selection of a set of profiles based on spatial as well as curve differences, automatic positioning of the Profile Flags, and adaptation for probing of time-varying volumetric data. Additionally, we include the evaluation of the used methods by our medical partners. © The Eurographics Association 2006.

关键词： Dynamic contrast enhanced MRI

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A Sum-over-Paths impulse-response moment-extraction algorithm for IC-interconnect networks: Verification, uncoupled RLCM lines

A Sum-over-Paths impulse-response moment-extraction algorith...

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23rd International VLSI Multilevel Interconnection Conference, VMIC 2006

作者： Le Coz, Y.L. Krishna, D. Petranovic, D.M. Electrical Computer and Systems Engineering Dept. Rensselaer Polytechnic Institute Troy NY 12180-3590 United States Mentor Graphics Corporation 8005 SW Boeckman Rd. Wilsonville OR 97070-9733 United States

We have created a stochastic impulse-response (IR) moment-extraction algorithm for RLCM circuit networks. It employs a newly discovered Feynman Sum-over-Paths (SoP) postulate. We report here results of an initial numerical verification, involving an uncoupled RLCM-line benchmark problem. We obtained promising results: less than 0.5% and 10% approximate l-σ error for first- and second-order IR moments, respectively, after only 10K sampled path-sum terms. We believe, in conclusion, that this type of IR-moment extraction algorithm may find useful application in a massively coupled electrical system, such as that encountered in high-end digital-IC interconnects.

关键词： Impulse response

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Efficiently capturing object contours for non-photorealistic rendering

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15th Scandinavian Conference on Image Analysis, SCIA 2007

作者： Jiyoung, Park Juneho, Yi Computer Graphics Research Team Digital Content Research Division Electronics and Telecommunications Research Institute Daejeon 305-700 Korea Republic of School of Information and Communication Engineering Sungkyunkwan University Suwon 446-740 Korea Republic of

ISBN: (纸本)9783540730392

Non-photorealistic rendering (NPR) techniques aim to outline the shape of objects and reduce visual clutter such as shadows and inner texture edges. As the first phase result of our entire research, this work is concerned with a structured light based approach that efficiently detects depth edges in real world scenes. Depth edges directly represent object contours. We exploit distortion of the light pattern in the structured light image along depth discontinuities to reliably detect depth edges. However, in reality, distortion along depth discontinuities may not occur or be large enough to detect depending on the distance from the camera or projector. For practical application of the proposed approach, we have presented a novel method that guarantees the occurrence of the distortion along depth discontinuities for a continuous range of object location. Experimental results show a great promise that the technique can successfully provide object contours to be used for non-photorealistic rendering. © Springer-Verlag Berlin Heidelberg 2007.

关键词： Object recognition

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A Sum-over-Paths impulse-response moment-extraction algorithm for IC-interconnect networks: Verification, coupled RLCM lines

A Sum-over-Paths impulse-response moment-extraction algorith...

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24th International VLSI Multilevel Interconnection Conference, VMIC 2007

We have recently created a stochastic impulse-response (IR) moment-extraction algorithm for RLCM IC-inter connect networks. [1] It employs a newly discovered Sum-over-Paths (SoP) postulate. We report here results of a first-time numerical verification for 1-, 2-, and 3-stage coupled RLCM interconnects. We achieved less than 0.5% and 5% approximate 1-σ error for first- and second-order IR moments, respectively, after only 10K sampled path-sum terms. Our results, we believe, indicate that this type of IR-moment extraction algorithm may find useful application in future CAD-tool computational kernels for massively coupled, high-end digital-IC interconnects.

关键词： Impulse response

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