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A bandwidth reduction scheme for 3d texture-based volume rendering on commodity graphics hardware

International Conference on Computational Science and its Applications, ICCSA 2004

作者： Lee, Won-Jong Park, Woo-Chan Kim, Jung-Woo Han, Tack-don Yang, Sung-Bong Neelamkavil, Francis Media System Laboratory Department of Computer Science Yonsei University Seoul120-749 Korea Republic of School of Computer Engineering Department of Internet Engineering Sejong University Seoul143-747 Korea Republic of Digital Media R and D Center Samsung Electronics 416 Maetan-3Dong Paldal-Gu Suwon City442-742 Korea Republic of

ISBN: (纸本)3540220569

In this paper, we propose a bandwidth-effective volume rendering scheme which subdivides the volume into the sub-volumes and transmits them to the texture units in visibility order. Each sub-volume is rendered in the same manner as the original volume on the graphics hardware and the corresponding sub-image is blended in the alpha blending unit. The sub-volume oriented processing improves the cache efficiency and allows empty space skipping. Moreover, it is capable of rendering volume datasets that do not fit into the texture memory. Simulations show that the proposed scheme is effective for 3d texture-based volume rendering on commodity graphics hardware by reducing memory bandwidth up to 30 times when compared with the traditional method. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Volume rendering

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Semantics of a Networked World: Semantics for Grid databases: First International IFIP Conference, ICSNW 2004 Paris, France, June 17-19, 2004 revised Selected Papers 1st

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1st International IFIP Conference on Semantics of a Networked World, ICSNW 2004

作者： Bouzeghoub, Mokrane Goble, Carole Kashyap, Vipul Spaccapietra, Stefano CNRS - Université de Versailles Laboratoire PRiSM 45 avenue des Etats-Unis Versailles France University of Manchester Department of Computer Science Oxford Road Manchester United Kingdom Clinical Informatics R&D Partners HealthCare System Inc. 93 Worcester St. P.O. Box 81905 WellesleyMA United States Swiss Federal Institute of Technology Lausanne Lausanne Switzerland

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Bit-error-rate performance of a gigabit Ethernet O-CdMA technology demonstrator (Td)

Bit-error-rate performance of a gigabit Ethernet O-CDMA tech...

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IEEE Photonics Conference (IPC)

作者： V.J. Hernandez A.J. Mendez C.V. Bennett W.J. Lennon Lawrence Livemore National Laboratory Livermore CA USA Department of Electrical and Computer Engineering University of California Davis CA USA Mendez R&D Associates El Segundo CA USA

An O-CdMA Td based on 2-d (wavelength/time) codes is described, with bit-error-rate (BEr) and eye-diagram measurements given for eight users. Simulations indicate that the Td can support 32 asynchronous users.

关键词： Ethernet networks Bit error rate decoding Wavelength measurement Arrayed waveguide gratings Stimulated emission Optical receivers Optical saturation Multiaccess communication Pulse modulation

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Miniaturized thin-film magnetic field probe with high spatial resolution for LSI chip measurement

Miniaturized thin-film magnetic field probe with high spatia...

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IEEE International Symposium on Electromagnetic Compatibility (EMC)

作者： N. Ando N. Masuda N. Tarnaki T. Kuriyama S. Saito K. Kato K. Ohashi M. Saito M. Yarnaguchi Jisso and Production Technologies Research Laboratories NEC Corporation Sagamihara Japan System Devices Research Laboratories NEC Corporation Sagamihara Japan R&D Support Center NEC Corporation Tsukuba Japan Fundamental and Environmental Research Laboratories NEC Corporation Tsukuba Japan Nano Technology Research Laboratory Waseda University Tokyo Japan Department of Electrical and Communication Engineering Tohoku University Sendai Japan

It is important to obtain the absolute value of current flowing through each power line on a large-scale integrated (LSI) circuit by measurement because this current on an LSI chip is regarded as conductive noise. We have developed a thin-film magnetic field probe that has spatial resolution high enough to obtain the absolute value of high-frequency power current on an LSI chip. Spatial resolution was enhanced by miniaturizing the shielded loop coil, the detection part of the probe. The outer size of the new coil is 50/spl times/22 /spl mu/m. In taking measurements with the new probe over a 60 /spl mu/m wide microstrip line used as a device under test (dUT), we obtained a 6 dB decrease point of 40 /spl mu/m, which indicates the spatial resolution of the probe. This value is comparable to the typical width of power lines on an LSI chip, around 50 /spl mu/m and is less than half that of our conventional probes, around 90 /spl mu/m. In measurements with the new probe over an LSI chip, we obtained such a fine magnetic near-field distribution that the magnetic fields generated from the lines on the chip were separated. On-chip decoupling was also confirmed by using the new probe. The new probe enables direct verification of a circuit design for suppressing electromagnetic interference (EMI), while conventional coarse mapping of the magnetic near-field cannot be used to evaluate such conductive noise.

关键词： Magnetic field measurement Magnetic films Probes Spatial resolution Large scale integration Semiconductor device measurement Electromagnetic interference Conductive films Thin film circuits Integrated circuit measurements

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Nano-scale MOSFETs with programmable virtual source/drain

Nano-scale MOSFETs with programmable virtual source/drain

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device research Conference

作者： Byung Yong Choi Yong-Kyu Lee Woo Young Choi Han Park dong-Soo Woo Jong duk Lee Byung-Gook Park Chang-Woo Oh Chilhee Chung donggun Park Inter university Semiconductor Research Center Seoul National University Seoul KOREA Seoul National University Gwanak-gu Seoul KR Sch. of Electr. Eng. & Comput. Sci. Seoul Nat. Univ. South Korea Device Research Team R&D Center Samsung Electronics Company Limited Yongin si Gyeonggi South Korea C&M System LSI Samsung Electronics Company Limited Yongin si Gyeonggi South Korea Device Research Team Samsung Electronics Co. Yongin-City Kyunggi-Do KOREA Inter-University Semiconductor Research Center and School of Electrical Engineering and Computer Science Seoul National University Seoul South Korea C&M . System LSI Samsung Electronics Co. Yongin-City Kyunggi-Do KOREA

ISBN: (纸本)0780382846

In this work, we fabricated twin silicon-oxide-nitride-oxide-silicon (SONOS) memory (TSM) cell transistors, based on the 90 nm non-volatile memory technology and showed the implementation of programmable threshold voltage (V/sub th/) MOSFETs in the nano-scale regime. It was clearly observed that the transistor has high I/sub on//I/sub off/ ratio (>106) and small drain leakage (/spl sim/10 pA) in the 30 nm regime. From the experimental result from fabricated devices, it can be deduced that the TSM transistor has various MOSFET applications due to charged states in the nitride. To evaluate the various MOSFET applications of the TSM transistor in the nano-scale regime, the simulation of a 30 nm-long gate TSM transistor was carried out on the 2d ATLAS, including tunneling and impact ionization models. It is concluded that the proposed TSM MOSFET structure promises a well-controlled short channel effect and high I/sub on//I/sub off/ characteristics.

关键词： MOSFETs Nonvolatile memory SONOS devices Charge carrier processes Electrons computer science Electronic mail Large scale integration research and development Transistors

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Multi agents in mid involvement deception systems

Multi agents in mid involvement deception systems

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International Conference on Integration of Knowledge Intensive Multi-Agent systems (KIMAS)

作者： M.r. razzazi N. Bathaeian Software system R&D Lab Computer Engineering Department Amirkabir University of Technology슠 Tehran Iran

Intelligent agent architecture has been used in several intrusion detection systems. We explore using multiagents system for mid involvement deception system. A multiagent architecture is suggested. A small case of th... 详细信息

关键词： Intrusion detection computer architecture Postal services Telecommunication traffic Operating systems Intelligent agent Software systems research and development Mission critical systems Bridges

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Creating Coordination in the Cerebellum Catania, 2–4 October 2003

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The Cerebellum 2004年第1期3卷 39-64页

作者： Andjus, P. r. Zhu, L. Strata, P. Arata, A. Ito, M. Bearzatto, B. Servais, L. Baba-Aïssa, F. de Kerchove d’Exaerde, A. Schurmans, S. Cheron, G. Schiffmann, S. N. Bower, J. M. devor, A. Burguière, E. rutteman, M. de Zeeuw, C. I. Berthoz, A. Wiener, S. rondi-reig, L. Campana, A. dusart, I. Wherlé, r. Weitzman, J. Yaniv, M. Sotelo, C. Mariani, J. Cavallari, P. Esposti, r. Cerri, G. Cerminara, N. L. Apps, r. Marple-Horvat, d. E. Wagstaff, J. dan, B. Chorev, E. Manor, Y. Sohl, G. Willecke, K. Yarom, Y. Philipona, d. dognin, E. Coenen, O. J. Sola, E. Prestori, F. rossi, P. Taglietti, V. d’Angelo, E. de Filippi, G. Baldwinson, T. Sher, E. Ekerot, C. Jorntell, H. Fernández, G. Martínez, S. Gall, d. roussel, C. Forti, L. Schiffmann, S. Gruol, d. L. Netzeband, J. G. Quina, L. A. Blakely Gonzalez, P. K. Hoebeek, F. E. Van Alphen, A. M. Schonewille, M. Frens, M. A. Goossens, H. H. L. M. Stahl, J. Ango, F. di Cristo, G. Hagashiyama, H. Bennett, V. Huang, Z. J. Jörntell, H. Ekerot, C.- F. Launey, T. Endo, S. Sakai, r. Harano, J. Lohof, A. M. Sherrard, r. M. Lu, H. Huang, C. Hartmann, M. J. Marshall, S. P. Lang, E. J. Michikawa, T. Mikoshiba, K. Nitschke, M. F. Erdmann, C. Melchert, U. Arp, T. Sprenger, A. Petersen, d. Kömpf, d. Binkofski, F. Heide, W. Pedroarena, C. Schwarz, C. Parsons, L. M. Schmahmann, J. d. Grill, S. E. Walker, M. S. Petacchi, A. rokni, d. Saito, S. Kato, K. Sajdel-Sulkowska, E. M. Nguon, K. Selimi, F. Wang, Q. Cristea, I. Chait, B. Heintz, N. Serapide, M. F. Cicirata, F. de Saedeleer, C. Schwaller, B. Swinny, J. d. Ijkema-Paassen, J. Metzger, F. Kalicharan, d. Gramsbergen, A. van der Want, J. J. L. Slemmer, J. E. Weber, J. T. Winkelman, B. H. J. Chédotal, A. de Schutter, E. Maex, r. Koekkoek, S. K. E. Bouslama, L. Ghoumari, A. Ebner, T. Häusser, M. Hawkes, r. Herrup, K. Lisberger, S. G. Mugnaini, E. Nunzi, M. -G. russo, M. Ptak, K. Orr, H. T. Zoghbi, H. Y. rossi, F. ruigrok, T. J. H. Sabel-Goedknegt, E. Simpson, J. I. Morando, L. Cesa, r. dumoulin, A. dieudonné, S. dugué, G. Triller, A. Louvi, A. Alexandre, Department for Neuroscience University of Turin Italy Department of Physiology and Biochemistry School of Biology University of Belgrade Serbia & Montenegro Rita Levi Montalcini Center for Brain Repair Department of Neuroscience University of Turin Italy Laboratory for Memory and Learning Brain Science Institute Wako Saitama Japan Laboratory for Memory and Learning BSI (RIKEN) Japan Laboratory of Neurophysiology Université Libre de Bruxelles Campus Erasme Brussels Laboratory of Neurophysiology Université Mons-Hainaut Mons Belgium Laboratory of Electrophysiology Université Mons-Hainaut Mons Belgium Laboratory of Neurophysiology Université Libre de Bruxelles Brussels IRIBHM CP601 Université Libre de Bruxelles Campus Erasme Brussels Health Science Center The Research Imaging Center at The University of Texas San Antonio Cajal Neuroscience Research Center at the University of Texas San Antonio Biology UTSA San Antonio Research Imaging Center UTHSCSA San Antonio USA Massachusetts General Hospital Harvard Medical School NMR Center Charlestown USA CNRS-Collège de France LPPA Paris France Department of Neuroscience Erasmus University Rotterdam Rotterdam The Netherlands Department of Neuroscience Medical Faculty Erasmus MC Rotterdam The Netherlands CNRS-UMR 7102 Labo DVSN Paris Hôpital de la Salpêtrière INSERM U106 Paris France CNRS URA 1644 I. Pasteur Paris France Campus de San Juan Instituto de Neurociencias UMH-CSIC Alicante Group ‘Développement et Vieillissement du Système Nerveux’ UMR CNRS UniversitéP et M Curie Paris France University P& M Curie UMR CNRS St Bernard Paris France Dipartimento di Scienze Precliniche LITA-Vialba Universitd degli Studi Milano Italy Istituto di Fisiologia Umana II Universitd degli Studi Milano Italy Department of Physiology University of Bristol UK Centre for Biophysical and Clinical Research into Human Movement (CRM) Manchester Metropolitan University UK Department of Pediatrics and Department of Biochemistry and M

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PN code tracking for STBC transmit diversity rAKE receivers in closely spaced multipath environments

PN code tracking for STBC transmit diversity RAKE receivers ...

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IEEE Conference on Vehicular Technology (VTC)

作者： B.S. Nugroho r.d. Balakrishnan H.M. Kwon d.H. Kang Department of Electrical and Computer Engineering Wichita State University Wichita KS USA IMT-2000 System R&D Team IT Center Samsung Electronics Company Limited Suwon Gyeonggi South Korea

Conventional early-late-gate (ELG) pseudo-noise (PN) code tracking shows poor performance in closely spaced multi-path environments where multiple path separation is less than 1.5 times PN chip interval for example. Fock et al. (dec. 2001) proposed an efficient PN code tracking scheme for a rAKE receiver with a single transmit antenna and a single receive antenna by canceling the self-interference coming from the closely spaced adjacent multipaths. However, a general trend for 3G or future wireless communication system development is to employ multiple transmit and multiple receive antennas instead of a single transmit antenna. The space time block code (STBC) in S. Alamouti (Oct. 1998) is one of popular transmit antenna diversity schemes. In this paper we propose a PN code tracking algorithm for the STBC transmit diversity system under 3GPP specifications, extending the work by Fock et al. (dec. 2001). Channel estimation for the transmit diversity system is provided with the aid of primary common pilot channel (P-CPICH) pattern. Simulations show that the proposed algorithm can eliminate the effects of the adjacent paths and can make an improvement in the root mean square (rMS) of the timing error compared to system without transmit diversity, e.g., 2 dB in chip-energy-to-noise-density ratio E/sub c//N/sub 0/ at rMS = 0.1.

关键词： Fading Multipath channels Transmitting antennas receiving antennas Channel estimation Timing delay estimation Interference cancellation diversity methods research and development

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Affine-permutation symmetry: invariance and shape space

Affine-permutation symmetry: invariance and shape space

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IEEE/SP Workshop on Statistical Signal Processing (SSP)

作者： d. Sepiashvili J.M.F. Moura V.H.S. Ha Electrical and Computer Engineering Carnegie Mellon University Pitsburg PA USA Digital Media R&D Center Samsung Electronics Mobile Solution Laboratory Suwon South Korea

Studying similarity of objects by looking at their shapes arises naturally in many applications. However, under different viewpoints one and the same object appears to have different shapes. In addition, the correspondences between their feature points are unknown to the viewer. In this paper, we introduce the concept of intrinsic shape of an object that is invariant to affine-permutation shape distortions. We study geometry of the intrinsic shape space in the framework of differentiable manifolds with the emphasis on the computational aspects. We represent the intrinsic shape space as a folded Grassmann manifold. This allows us to easily analyze and compare different intrinsic shapes under the affine-permutation distortion without explicitly computing and recovering these intrinsic shapes. We present the mathematical equations for connecting two intrinsic shapes by a geodesic, measuring their similarity, and morphing one intrinsic shape onto another.

关键词： Shape measurement Geometry Geophysics computing Joining processes Image processing Application software Equations Level measurement Image sensors Object detection

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distributed source coding: comparison of two methods close to the Wyner-Ziv bound

Distributed source coding: comparison of two methods close t...

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IEEE International Symposium on Information Theory

作者： M. Jeanne r. Zhang B. Girod P. Siohan France Telecom R&D DMR/DDH France Sony Electronics Inc. San Jose CA USA Information System Laboratory University of Stanford Stanford CA USA Rennes France

This paper deals with the practical performance of distributed source coding, i.e., the compression of correlated sources that are coded independently but decoded jointly. This paper proposes to compare, in a global distortion sense, for the Gaussian continuous sources, dISCUS with another method that can be seen as an application of the Al-Issa technique.

关键词： Source coding decoding Error correction codes Entropy Telecommunications research and development Information systems random variables Turbo codes Training data

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