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Quantum Electronics and Laser science Conference (QELS)

作者： Yoon-Ho Kim W.P. Grice Department of Physics Pohang University of Science and Technology Pohang South Korea Computer Science and Mathematics Division Oak Ridge National Laboratory Center for Engineering Science Advanced Research Oak Ridge TN USA

ISBN: (纸本)1557527962

A linear 50/50 beamsplitter, together with a coincidence measurement, has been widely used in quantum optical experiments, such as teleportation, dense coding, etc., for interferometrically distinguishing, measuring, or projecting onto one of the four two-photon polarization Bell-states |/spl Psi//sup (-)/>. In this paper, we demonstrate that the coincidence measurement at the output of a beamsplitter cannot be used as an absolute identifier of the input state |/spl Psi//sup (-)/> nor as an indication that the input photons have projected to the |/spl Psi//sup (-)/> state.

关键词： Optical interferometry Nonlinear optics Quantum entanglement Optical scattering Teleportation Optical polarization Photonics Society Quantum mechanics Nonlinear optical devices Optical pumping

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Measurement of the spectral properties of the two-photon state generated via type-II spontaneous parametric down-conversion

Measurement of the spectral properties of the two-photon sta...

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Quantum Electronics and Laser science Conference (QELS)

ISBN: (纸本)0819458988

We report the complete measurement of the spectral properties of photon pairs generated via spontaneous parametric down-conversion. The measurements, which include not only single-photon spectra, but also two-photon joint spectra, were performed for both cw and ultrafast pumping configurations. In agreement with theoretical predictions, the spectra for the ultrafast pumped case reveal asymmetries not present with cw pumping.

关键词： Quantum mechanics Quantum entanglement Bandwidth Polarization Frequency Nonlinear optics Optical pumping Ultrafast optics Photonics Society Photonic crystals

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Observation of correlated-photon statistics using a single detector

Observation of correlated-photon statistics using a single d...

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Quantum Electronics and Laser science Conference (QELS)

ISBN: (纸本)1557527962

We report an experimental observation of correlated-photon statistics using a single detector. The usual coincidence dip in a two-photon polarization interferometer is accompanied by a dip in single-photon detection rates. Surprisingly, a dip in the singles rate is also observed when the interferometer is aligned for a coincidence peak, or anti-dip. This effect is explained by taking into account all possible photon number states that reach the detector, rather than considering just the state post-selected by the coincidence measurement.

关键词： Statistics Detectors Optical interferometry Photonics Society Nonlinear optics Optical pumping Interference Photonic crystals Physics computer science

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Virtual Vitals™ a low cost hardware interface to SVS™ 3D virtual reality simulator for first responder training

Virtual Vitals™ a low cost hardware interface to SVS™ 3D v...

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2005 Spring Simulation Interoperability Workshop, SIW 2005

作者： McKinzie, Fitz C. Fowler, Sandra A. Reality Response™ Division Advanced Interactive Systems 12001 Science Drive Suite 125 OrlandoFL32826 United States SFC Paul Ray Smith Simulation and Training Technology Center U.S. Army Research Development and Engineering Command 12423 Research Pkwy OrlandoFL32826 United States

Many high fidelity single task training systems have been developed for specialized medical procedure training and the focus on "realism" has driven upward system development costs. The same paradigm exists for 3D virtual reality force on force combat training systems where realism in the simulation is the primary objective. There is a dual need in the civilian and military communities for a first responder training system to supplement the high fidelity training systems and the magnitude of first responders to be trained requires wide deployment. Currently the most cost effective, widely deployable training systems are computer Based Training (CBT) in CD-ROM or Internet Application formats. The Virtual Vitals™ Product combines elements of all the aforementioned systems into a single training system. This paper discusses which elements of the single task trainer, 3D virtual reality, and CBT systems are necessary to create a portable widely deployable hardware/software training system and the associated competing issues of system fidelity, low cost, extendable content, and process vs. procedural training. © 2005 The MITRE Corporation. All rights reserved.

关键词： Virtual reality

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Managing geography learning objects using personalized project spaces in G-Portal

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9th European Conference on research and advanced Technology for Digital Libraries, ECDL 2005

作者： Goh, Dion Hoe-Lian Sun, Aixin Zong, Wenbo Wu, Dan Lim, Ee-Peng Theng, Yin-Leng Hedberg, John Chang, Chew Hung Center for Advanced Information Systems School of Computer Engineering Nanyang Technological University Nanyang Avenue Singapore 639798 Singapore School of Communication and Information Nanyang Technological University 31 Nanyang Link Singapore 637718 Singapore Center for Research in Pedagogy and Practice National Institute of Education 1 Nanyang Walk Singapore 637616 Singapore School of Computer Science and Engineering University of New South Wales Sydney NSW 2052 Australia

ISBN: (纸本)3540287671

The personalized project space is an important feature in G-Portal that supports individual and group learning activities. Within such a space, its owner can create, delete, and organize metadata referencing learning objects on the Web. Browsing and querying are among the functions provided to access the metadata. In addition, new schemas can be added to accommodate metadata of diverse attribute sets. Users can also easily share metadata across different projects using a "copy-and-paste" approach. Finally, a viewer to support offline viewing of personalized project content is also provided. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Learning systems

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The cluster monitoring & controlling method with scalable communication framework

The cluster monitoring & controlling method with scalable co...

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International Conference on High Performance Computing in the Asia-Pacific Region

作者： Doosik Park Sang-Moon Lee Changsung Lee Soonchurl Shin Young-Ae Kang Minho Ban Woojin Yang Seungwhan Kim Inho Lee Server R&D Group Computer Systems Division Digital Media Business Samsung Electronics Company Limited South Korea Computational Science & Engineering Center Digital Research Center Samsung Advanced Institute of Technology

We introduce a new concept of management system based on the scalable communication framework effectively working on mixture of several complex layers including private networks. Overlay network architecture with virtual IP addressing has been applied to identify nodes uniquely. Inter-node communication on different private networks is ensured by defined complex network protocol (CNP). We also develop a communication middleware for the cluster management system called SARK (scalable architecture routing kernel). The total elapsed time for gathering all information and its system overhead are measured. The scalability test performed on the cluster of clusters which contains 100 nodes, and shows our proposed work would be scalable in the cluster of 4,000 nodes. Therefore, our scalable communication framework would be considered as a suitable method for monitoring and controlling a large cluster system on mixture of several complex network layers

关键词： Monitoring Communication system control Complex networks Protocols Middleware Routing Kernel Time measurement Scalability Testing

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Conservation of filtering in manufacturing systems

Conservation of filtering in manufacturing systems

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作者： Li, Jingshan Enginarlar, Emre Meerkov, Semyon M. Manufacturing Systems Research Lab General Motors Research and Development Center Warren MI 48090-9055 United States Decision Applications Division Los Alamos National Laboratory Los Alamos NM 87545 United States Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI 48109-2122 United States

ISBN: (纸本)008045108X

This paper addresses the issue of reliable satisfaction of customer demand by unreliable production systems. Using a simple Production-Storage-Customer model, we show that this can be accomplished by filtering out production randomness. The filtering of randomness is ensured by finished goods buffers (filtering in space) and shipping periods (filtering in time). The following question is considered: How are filtering in space and in time interrelated? As an answer, we show that there exists a conservation law: in lean manufacturing systems, the amount of filtering in space multiplied by the amount of filtering in time (both measured in appropriate dimensionless units) is practically constant. Copyright © 2005 IFAC.

关键词： Manufacture

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Contrastive Analysis and Feature Selection for Korean Modal Expression in Chinese-Korean Machine Translation System

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International Journal of computer Processing of Languages 2005年第3期18卷 227-242页

作者： JIN-JI LI JI-EUN ROH DONG-IL KIM JONG-HYEOK LEE Department of Computer Science and Engineering Electrical and Computer Engineering Division and Advanced Information Technology Research Center (AITrc) Pohang University of Science and Technology (POSTECH) San 31 Hyoja Dong Pohang 790-784 Korea Language Engineering Institute Department of Computer Electron and Telecommunication Engineering Yanbian University of Science and Technology (YUST) Yanji Jilin 133-000 P.R. China

To generate a proper Korean predicate, a natural modal expression is the most important factor for a machine translation (MT) system. Tense, aspect, mood, negation, and voice are the major constituents related to modal expression. The linguistic encoding of a modal expression is quite different between Chinese and Korean in terms of linguistic typology and genealogy. In this paper, a new applicable categorization of Korean modality system viz. tense, aspect, mood, negation, and voice, will be proposed through a contrastive analysis of Chinese and Korean from the viewpoint of a practical MT system. In order to precisely determine the modal expression, effective feature selection frameworks for Chinese are presented with a variety of machine learning methods. As a result, our proposed approach achieved an accuracy of 83.10%.

关键词： Modal expression Modality Modality system Chinese-Korean MT system Tense Aspect Mood Negation Voice

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Identification of genomic signatures for the design of assays for the detection and monitoring of anthrax threats

Identification of genomic signatures for the design of assay...

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10th Pacific Symposium on Biocomputing, PSB 2005

作者： Draghici, Sorin Khatri, Purvesh Liu, Yanhong Chase, Kitty J. Bode, Elizabeth A. Kulesh, David A. Wasieloski, Leonard P. Norwood, David A. Reifman, Jaques Dept. of Computer Science Wayne State University Detroit MI 48202 United States Bioinformatics Cell Telemedicine and Advanced Technology Research Center US Army Medical Research and Materiel Command Ft. Detrick MD 21701 United States US Army Medical Research Institute of Infectitious Diseases Diagnostic Systems Division Ft. Detrick MD 21701 United States US Dept. of Agriculture Agricultural Research Service Eastern Regional Research Center Wyndmoor PA 19038 United States

ISBN: (纸本)9812560467

Sequences that are present in a given species or strain while absent from or different in any other organisms can be used to distinguish the target organism from other related or un-related species. Such DNA signatures are particularly important for the identification of genetic source of drug resistance of a strain or for the detection of organisms that can be used as biological agents in warfare or terrorism. Most approaches used to find DNA signatures are laboratory based, require a great deal of effort and can only distinguish between two organisms at a time. We propose a more efficient and cost-effective bioinformatics approach that allows identification of genomic fingerprints for a target organism. We validated our approach using a custom microarray, using sequences identified as DNA fingerprints of Bacillus anthracis. Hybridization results showed that the sequences found using our algorithm were truly unique to B. anthracis and were able to distinguish B. anthracis from its close relatives B. cereus and B. thuringiensis.

关键词： Genome

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Testing and Certification of Trustworthy systems introduction to Minitrack

Testing and Certification of Trustworthy Systems introductio...

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38th Annual Hawaii International Conference on System sciences, HICSS 2005

作者： Hevner, Alan R. Linger, Richard C. Walton, Gwendolyn H. Information Systems and Decision Sciences Dept. Univ. of South Florida Tampa FL 33620 United States CERT Research Center Software Engineering Institute Carnegie Mellon University Pittsburgh PA 15213 United States Dept. of Mathematics and Computer Science Florida Southern College Lakeland FL 33801 United States

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