检索结果-内蒙古大学图书馆

Dynamics and Synchronization in a Broad‐Area Semiconductor Laser Array with External Optical Feedback

AIP Conference Proceedings 2004年第1期742卷 267-275页

作者： Yun Liu Yehuda Braiman Center for Engineering Science Advanced Research Computer Science and Mathematics Division Oak Ridge National Laboratory Oak Ridge TN 37831‐6016

We report experimental results on the dynamics and synchronization of a 19‐broad‐area semiconductor laser array in an external cavity containing a lens array, projection optics, and a diffractive grating. All lasers are locked to single longitudinal mode. Significant improvement of the spatial profile of the entire laser array output beam has been observed. Laser coupling is investigated through the radio‐frequency (RF) spectrum and temporal correlation of coupled laser emitters. Such coupling is found to exert certain effects on the frequency locking of the laser array.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Quantum interference with beamlike type-II spontaneous parametric down-conversion

Quantum interference with beamlike type-II spontaneous param...

引用

International Conference on Quantum Electronics (IQEC)

作者： Yoon-Ho Kim Computer Science & Mathematics Division Oak Ridge National Laboratory Center for Engineering Science Advanced Research Oak Ridge TN USA

We implement experimentally a method to generate photon-number-path and polarization entangled photon pairs using "beamlike" type-II spontaneous parametric down-conversion (SPDC), in which the signal-idler photon pairs are emitted as two separate circular beams with small emission angles rather than as two diverging cones

关键词： Interference Optical pumping Laser excitation Photonic crystals Apertures Quantum computing Quantum entanglement Photonics Society Optical polarization Stimulated emission

来源：评论

学校读者我要写书评

暂无评论

The Healthgrid White Paper 3

The Healthgrid White Paper

引用

3rd Annual Conference of the Healthgrid Association, Healthgrid 2005

作者： Breton, Vincent Dean, Kevin Solomonides, Tony Aloisio, Giovanni Benkner, Siegfried Bilofsky, Howard Blanquer, Ignacio Brady, Michael Cannataro, Mario Chouvarda, Ioanna Claerhout, Brecht De Moor, Georges De Neve, Wilfried De Wagter, Carlos Fiore, Sandro Hassan, Kinda Heeren, Germaine Hernández, Vicente Herveg, Jean A.M. Hofmann, Martin Jones, Chris Koutkias, Vassilios Lloyd, Sharon Lonsdale, Guy Alonso, Victoria L. Maglaveras, Nicos Maigne, Lydia Malousi, Andigoni Martín-Sánchez, Fernando McClatchey, Richard Medico, Enzo Miguet, Serge Mirto, Maria Montagnat, Johan Nørager1, Sofie Nozaki, Kazunori Oliveira, Ilídio Castro Pennec, Xavier Poullet, Yves Merino, Juan Pedro Sánchez Strizh, Irina G. Taillet, Michel Tristram, Clive Tverdokhlebov, Nikolay Veltri, Pierangelo Ziegler, René CNRS-IN2P3 LPC Campus des Cézeaux AubiereCedex63177 France Internet Business Solutions Group Cisco Systems 9 New Square Bedfont Lakes Middlesex FelthamTW14 8HA United Kingdom University of the West of England Bristol CEMS Coldharbour Lane BristolBS6 6TH United Kingdom Center for Advanced Computational Technologies ISUFI Dept. of Innovation Engineering University of Lecce Via per Monteroni Lecce73100 Italy Institute of Scientific Computing University of Vienna Nordbergstrasse 15 ViennaA-1090 Austria University of Pennsylvania School of Engineering and Applied Science Computer and Information Science Center for Bioinformatics 1416 Blockley Hall 423 Guardian Drive PhiladelphiaPA19104-6021 United States Universidad Politecnica de Valencia Camino de Vera/n Valencia46022 Spain FRS FREng Dept. of Engineering Science Oxford University Parks Road OxfordOX1 3PJ United Kingdom Magna Graecia University of Catanzaro School of Bioinformatics and Biomedical Engineering Campus di Germaneto Viale Europa Germaneto Catanzaro88100 Italy Aristotle University The Medical School Lab of Medical Informatics Box 323 Thessaloniki54124 Greece Custodix NV Verlorenbroodstraat 120 Bus 14 MerelbekeB-9820 Belgium Research in Advanced Medical Informatics and Telematics UZ Gent 5K3 De Pintelaan 185 GentB9000 Belgium Department of Radiotherapy Ghent University Hospital Building P7 De Pintelaan 185 GentB-9000 Belgium Laboratoire LIRIS Université Lumière Lyon 2 Campus Porte des Alpes 5 avenue Pierre Mendès France Bron69676 France av. E.Mounierlaan 83 Brussels1200 Belgium Faculté de Droit de Namur - FUNDP Centre de Recherches Informatiques & Droit 5 rempart de la Vierge Namur5000 Belgium Schloss Birlinghoven Sankt Augustin53754 Germany CERN Geneva 231211 Switzerland Oxford University Computing Laboratory Wolfson Building OxfordOX1 3QD United Kingdom C&C Research Laboratories NEC Europe Ltd. Rathausallee 10 Sankt AugustinD-53757 Germany Medic

ISBN: (纸本)158603510X

Over the last four years, a community of researchers working on Grid and High Performance Computing technologies started discussing the barriers and opportunities that grid technologies must face and exploit for the development of health-related applications. This interest lead to the first Healthgrid conference, held in Lyon, France, on January 16th–17th, 2003, with the focus of creating increased awareness about the possibilities and advantages linked to the deployment of grid technologies in health, ultimately targeting the creation of a European/international grid infrastructure for health. The topics of this conference converged with the position of the eHealth division of the European Commission, whose mandate from the Lisbon Meeting was "To develop an intelligent environment that enables ubiquitous management of citizens’ health status, and to assist health professionals in coping with some major challenges, risk management and the integration into clinical practice of advances in health knowledge." In this context "Health" involves not only clinical procedures but covers the whole range of information from molecular level (genetic and proteomic information) over cells and tissues, to the individual and finally the population level (social healthcare). Grid technology offers the opportunity to create a common working backbone for all different members of this large "health family" and will hopefully lead to an increased awareness and interoperability among disciplines. The first HealthGrid conference led to the creation of the Healthgrid association, a non-profit research association legally incorporated in France but formed from the broad community of European researchers and institutions sharing expertise in health grids. After the second Healthgrid conference, held in Clermont-Ferrand on January 29th–30th, 2004, the need for a "white paper" on the current status and prospective of health grids was raised. Over fifty experts from different areas of grid tec

关键词： Health risks

来源：评论

学校读者我要写书评

暂无评论

Identifying entanglement using quantum "ghost" interference and imaging

Identifying entanglement using quantum "ghost" interference ...

引用

International Quantum Electronics Conference, IQEC

作者： D'Angelo, Milena Kim, Yoon-Ho Kulik, Sergei P. Shih, Yanhua Department of Physics University of Maryland Baltimore County Baltimore MD 21250 United States Center for Engineering Science Advanced Research Computer Science and Mathematics Division Oak Ridge National Laboratory Oak Ridge TN 37831 United States Department of Physics Moscow State University Moscow Russia

We report a quantum interference and imaging experiment which shows quantitatively that entangled two-photon violate the EPR inequality. This measurement provides a direct way to distinguish quantum entanglement from ... 详细信息

关键词： Quantum electronics

来源：评论

学校读者我要写书评

暂无评论

Implementing MPI on the BlueGene/L supercomputer

引用

10th International European Conference on Parallel Processing, Euro-Par 2004

作者： Almási, George Archer, Charles Castaños, José G. Erway, C. Chris Heidelberger, Philip Martorell, Xavier Moreira, José E. Pinnow, Kurt Ratterman, Joe Smeds, Nils Steinmacher-Burow, Burkhard Gropp, William Toonen, Brian IBM Thomas J. Watson Research Center Yorktown HeightsNY10598-0218 United States IBM Systems Group RochesterMN55901 United States Mathematics and Computer Science Division Argonne National Laboratory ArgonneIL60439 United States

ISBN: (纸本)3540229248

The BlueGene/L supercomputer will consist of 65,536 dual-processor compute nodes interconnected by two high-speed networks: a three-dimensional torus network and a tree topology network. Each compute node can only address its own local memory, making message passing the natural programming model for BlueGene/L. In this paper we present our implementation of MPI for BlueGene/L. In particular, we discuss how we leveraged the architectural features of BlueGene/L to arrive at an efficient implementation of MPI in this machine. We validate our approach by comparing MPI performance against the hardware limits and also the relative performance of the different modes of operation of BlueGene/*** show that dedicating one of the processors of a node to communication functions greatly improves the bandwidth achieved by MPI operation, whereas running two MPI tasks per compute node can have a positive impact on application performance. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Supercomputers

来源：评论

学校读者我要写书评

暂无评论

Scheduling algorithms and sensitivity analysis for heterogeneous batch processors with incompatible job families

引用

Journal of the Chinese Institute of Industrial Engineers 2004年第1期21卷 18-26页

作者： Mathirajan, M. Iyer, Sivakumar Appa Chandru, Vijay Singapore-MIT Alliance School of Mechanical and Production Engineering Nanyang Technological University 50 Nanyang Avenue 639 798 Singapore Department of Computer Science and Automation Indian Institute of Science India Bangalore India School of MPE Division of Systems and Engineering Management Indian Institute of Science Department of Computer Science and Management Studies National Institute of Advanced Studies Jawaharlal Nehru Centre for Advanced Scientific Research India

We consider the problem of scheduling heterogeneous batch processor under the conditions non-identical job sizes, dynamic job arrivals and incompatible job families. The problem studied in this paper is motivated by heat-treatment operations in the pre-casting stage of steel casting manufacturing. We proposed a few heuristic algorithms with maximizing the average utilization of batch processors as scheduling objective. From the computational experiments carried out, it appears that all the proposed heuristics are yielding very close to the optimum (estimated optimum) average utilization of the batch processors. Further, we carried out a few simple sensitivity analyses. From sensitivity analysis, in general, it appears that there is an influence on the performance of the proposed heuristic algorithms when the input parameter changes. The influence observed is further verified statistically. Finally, it is observed that with respect to the scheduling objective, the choice of the best algorithm(s) do not significantly affected due to changes in the parameters considered.

关键词： Scheduling

来源：评论

学校读者我要写书评

暂无评论

Room temperature lasing in InAs quantum-dot microdisk laser

Room temperature lasing in InAs quantum-dot microdisk laser

引用

Conference on Lasers and Electro-Optics (CLEO)

作者： T. Ide T. Baba J. Tatebayashi S. Iwamoto T. Nakaoka Y. Arakawa Institute of Industrial Science University of Tokyo Meguro Tokyo Japan Division of Electrical and Computer Engineering Yokohama National University Yokohama Japan Division of Electrical of Engineering Yokohama National University Yokohama Japan Research Center forAdvanced Science and Technology University of Tokyo Meguro Tokyo Japan Research Center for Advanced Science and Technology University of Tokyo Tokyo Japan Institute of Industrial Science University of Tokyo Tokyo Japan

We achieved the first room-temperature lasing in a InAs quantum-dot microdisk at a wavelength of 1.23 /spl mu/m by photopumping. We investigated its temperature dependence to estimate dominant factors for lasing.

ISBN: (纸本)1557527709

关键词： Quantum dots Temperature dependence Gallium arsenide Space vector pulse width modulation Optical recording Quantum dot lasers Energy states Pulse measurements Laser theory Quantum computing

来源：评论

学校读者我要写书评

暂无评论

Testing and certification of trustworthy systems introduction to minitrack

Testing and certification of trustworthy systems introductio...

引用

Annual Hawaii International Conference on System sciences (HICSS)

作者： A.R. Hevner R.C. Linger G.H. Walton Information Systems & Decision Sciences Department University of South Florida Tampa FL USA CERT Research Center Software Engineering Institute Carnegie Mellon University Pittsburgh PA USA Department of Mathematics & Computer Science Florida Southern College Lakeland FL USA

来源：评论

学校读者我要写书评

暂无评论

A cost-effective usability evaluation progression for novel interactive systems

A cost-effective usability evaluation progression for novel ...

引用

Annual Hawaii International Conference on System sciences (HICSS)

作者： D. Hix J.L. Gabbard J.E. Swan M.A. Livingston T.H. Hollerer S.J. Julier Y. Baillot D. Brown Systems Research Center Virginia Polytechnic Institute and State University Blacksburg VA USA Naval Research Laboratory Virtual Reality Laboratory Washington D.C. DC USA Department of Computer Science University of California CA USA ITT Advanced Engineering and Sciences Alexandria VA USA

This paper reports on user interface design and evaluation for a mobile, outdoor, augmented reality (AR) application. This novel system, called the battlefield augmented reality system (BARS), supports information presentation and entry for situation awareness in an urban war fighting setting. To our knowledge, this is the first time extensive use of usability engineering has been systematically applied to development of a real-world AR system. Our BARS team has applied a cost-effective progression of usability engineering activities from the very beginning of BARS development. We discuss how we first applied cycles of structured expert evaluations to BARS user interface development, employing user interface mockups representing occluded (non-visible) objects. Then we discuss how results of these evaluations informed our subsequent user-based statistical evaluations and formative evaluations, and present these evaluations and their outcomes. Finally, we discuss how and why this sequence of types of evaluation is cost-effective.

关键词： Usability Interactive systems Bars Laboratories User interfaces Augmented reality Application software Virtual reality Costs Knowledge engineering

来源：评论

学校读者我要写书评

暂无评论

Flow-Service-Quality (FSQ) engineering: foundations for high-assurance network systems development

Flow-Service-Quality (FSQ) engineering: foundations for high...

引用

IEEE International Symposim on High Assurance systems engineering

作者： R.C. Linger A.R. Hevner G. Walton M.G. Pleszkoch CERT Research Center Software Engineering Institute Carnegie Mellon University Pittsburgh PA USA Information Systems & Decision Sciences Dept University of South Florida Tampa FL USA Department of Mathematics & Computer Science Florida Southern College Lakeland FL USA IBM Global Services & CERT Research Center Software Engineering Institute Carnegie Mellon University USA

High-assurance development of large-scale, network-centric systems must address challenging engineering realities. Flow-Service-Quality (FSQ) engineering provides foundations and practices that accommodate these reali... 详细信息

关键词： Maintenance engineering Control systems Reliability engineering Uncertainty Humans Large-scale systems systems engineering and theory Network topology Information systems mathematics

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：