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IEEE International Conference on Communications Workshops

作者： Ya-Feng Liu Yu-Hong Dai Zhi-Quan Luo State Key Lab. of Scientific and Engineering Computing Chinese Academy of Sciences Dept. of Electronic and Computer Engineering University of Minnesota

ISBN: (纸本)9781612842325

Consider the max-min fairness linear transceiver design for a multi-user MIMO interference channel. Assuming perfect channel knowledge, this problem can be formulated as the maximization of minimum SINR utility, subject to individual power constraints at each transmitter. In this paper, it is shown that when the number of antennas at each transmitter (receiver) is at least two and at each receiver (transmitter) is at least three, the problem of checking whether the given target SINR is feasible is strongly NP-hard. A cyclic coordinate ascent algorithm is also proposed for this design problem. Monotonicity and global convergence to KKT solution of the proposed algorithm are proved.

关键词： Interference channels transmitter receivers Transceivers multiple input multiple output systems Individual Power SINR global convergence Transmitters ANTENNA

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HCS: A Fast and Efficient Algorithm to Smooth Hash Collision

HCS: A Fast and Efficient Algorithm to Smooth Hash Collision

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2011 International Conference on computer Science and Network Technology(2011计算机科学与网络技术国际会议 ICCSNT 2011)

作者： Yun Xie Jingang Liu Yong Sun Dengke Qiao Join Faculty of Computer Scientific Research Capital Normal University Beijing China Institute of Computing Technology Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781457715860

As a compact data structure with the capacity of supporting fast lookup, Hash table is widely used in many network applications. The accompanying memory accesses introduced by hash collision make hash table works at a slower speed than required. Under the case of serious collision, these applications have little time to proceed the following packet processing, and fail to respond to new arriving packets. In this paper, we introduce an efficient algorithm named HCS to limit the memory accessing cost in an acceptable range. At the core, it dynamically applies for a new hash table, and adopts different hash functions to rehash these serious collide connections. Furthermore, it will reclaim the applied hash table when necessary. Experimental results show that, comparing with existing algorithms, HCS can decrease the lookup times by 18％ at least

关键词： hash table network applications collision reclaim

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End-To-End Solution for Integrated Workload and Data Management using GlideinWMS and Globus Online

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Journal of Physics: Conference Series 2012年第3期396卷

作者： Parag Mhashilkar Zachary Miller Rajkumar Kettimuthu Gabriele Garzoglio Burt Holzman Cathrin Weiss Xi Duan Lukasz Lacinski Scientific Computing Division Fermi National Accelerator Laboratory Batavia. IL 60563 USA Department of Computer Sciences University of Wisconsin-Madison Madison WI 53706 USA Mathematics and Computer Science Division Argonne National Laboratory Argonne IL 60637 USA Computation Institute The University of Chicago and Argonne National Laboratory Chicago IL 60637 USA IIT College of Science and Letters Illinois Institute of Technology Chicago IL 60616 USA

Grid computing has enabled scientific communities to effectively share computing resources distributed over many independent sites. Several such communities, or Virtual Organizations (VO), in the Open Science Grid and the European Grid Infrastructure use the GlideinWMS system to run complex application work-flows. GlideinWMS is a pilot-based workload management system (WMS) that creates an on-demand, dynamically-sized overlay Condor batch system on Grid resources. While the WMS addresses the management of compute resources, however, data management in the Grid is still the responsibility of the VO. In general, large VOs have resources to develop complex custom solutions, while small VOs would rather push this responsibility to the infrastructure. The latter requires a tight integration of the WMS and the data management layers, an approach still not common in modern Grids. In this paper we describe a solution developed to address this shortcoming in the context of Center for Enabling Distributed Peta-scale Science (CEDPS) by integrating GlideinWMS with Globus Online (GO). Globus Online is a fast, reliable file transfer service that makes it easy for any user to move data. The solution eliminates the need for the users to provide custom data transfer solutions in the application by making this functionality part of the GlideinWMS infrastructure. To achieve this, GlideinWMS uses the file transfer plug-in architecture of Condor. The paper describes the system architecture and how this solution can be extended to support data transfer services other than Globus Online when used with Condor or GlideinWMS.

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On the complexity of leakage interference minimization for interference alignment

On the complexity of leakage interference minimization for i...

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IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

作者： Ya-Feng Liu Yu-Hong Dai Zhi-Quan Luo State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy and Sciences Beijing China Department of Electronic and Computer Engineering University of Minnesota Minneapolis MN USA

For a general MIMO interference channel, we can determine the feasibility of linear interference alignment via minimizing the leakage interference. This paper gives a complete complexity characterization of the leakage interference minimization problem. It is shown that, when each transmitter (receiver) is equipped with at least three antennas and each receiver (transmitter) is equipped with at least two antennas, the problem of checking whether the interference in the network can be perfectly aligned is strongly NP-hard. Moreover, when each transmit/receive node is equipped with two or more antennas, leakage interference minimization can not be solved (even approximately) in polynomial time, unless P = NP.

关键词： Interference Polynomials Minimization MIMO Complexity theory Receiving antennas

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Half-life of the Iπ=4− intruder state in 34P: M2 transition strengths approaching the island of inversion

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Physical Review C 2012年第6期85卷 064303-064303页

作者： P. J. R. Mason T. Alharbi P. H. Regan N. Mărginean Zs. Podolyàk E. C. Simpson N. Alkhomashi P. C. Bender M. Bowry M. Bostan D. Bucurescu A. M. Bruce G. Căta-Danil I. Căta-Danil R. Chakrabarti D. Deleanu P. Detistov M. N. Erduran D. Filipescu U. Garg T. Glodariu D. Ghiţă S. S. Ghugre A. Kusoglu R. Mărginean C. Mihai M. Nakhostin A. Negret S. Pascu C. Rodríguez Triguero T. Sava A. K. Sinha L. Stroe G. Suliman N. V. Zamfir Department of Physics University of Surrey Guildford Surrey GU2 7XH United Kingdom Department of Physics Almajmaah University P.O. Box 66 11952 Saudi Arabia Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH) RO-077125 Bucharest Romania KACST P.O. Box 6086 Riyadh 11442 Saudi Arabia Department of Physics Florida State University Tallahassee Florida USA Department of Physics Istanbul University 34134 Istanbul Turkey School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4GJ United Kingdom UGC-DAE Consortium for Scientific Research Kolkata Centre Kolkata 700098 India Institute for Nuclear Research and Nuclear Energy (INRNE) Bulgarian Academy of Sciences Sofia Bulgaria Department of Computer Engineering Istanbul Sabahattin Zaim University Istanbul Turkey Department of Physics University of Notre Dame Notre Dame Indiana 46556 USA

The half-life of the 2305-keV, Iπ=4(−) intruder state in 34P has been measured as t1/2=2.0(1) ns using γ-ray coincidence, fast-timing techniques with the Bucharest HPGe and LaBr3:Ce detector array. Excited states in 34P were populated using the 18O(18O,pn)34P fusion-evaporation reaction at a beam energy of 36 MeV. Reduced transition probabilities have been calculated for different values of the M2/E3 mixing ratio, δE3/M2, and compared with shell-model estimates. For small values of the mixing ratio, the B(M2) value was found to be consistent with similar transitions associated with the occupation of neutron f7/2 configurations in this mass region.

关键词： HALF-life (Nuclear physics) RADIOISOTOPES EVAPORATION (Chemistry) EXCITED state chemistry ATOMIC mass NUCLEAR counters

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Visualization of the mining models on a data mining and integration platform

Visualization of the mining models on a data mining and inte...

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Proceedings of the International Convention MIPRO

作者： Ivan Janciak Marek Lenart Peter Brezany Lenka Novakova Ondrej Habala Research Group of Scientific Computing Faculty of Computer Science University of Technology Vienna Austria Department of Cybernetics Faculty of Electrical Engineering Czech Technical University Czech Republic Institute of Informatics Slovak Academy of Sciences Slovakia

An appropriate and understandable data visualization is a key feature for the usability of a data mining system. The proper visualization methods for data exploration increase the whole acceptability of the system and proper selection of the further data processing tasks. This paper introduces a framework for visualization of results as it is being implemented in the European project ADMIRE (Advanced Data Mining and Integration Research for Europe). The feasibility of the framework for distributed systems is presented on a real data mining and integration scenario. We describe two visualization components fully implemented and deployed in the distributed environment. The first one is implemented on the ADMIRE Gateway and is processing input data and producing information required by the second component residing on the ADMIRE Workbench, which provides the actual graphical visualization. The ADMIRE Gateway and Workbench are two basic components of the distributed ADMIRE Platform.

关键词： Data mining Data visualization Data models Computational modeling Biological system modeling Reservoirs Temperature measurement

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Fast facial fitting based on mixture appearance model with 3D constraint

Fast facial fitting based on mixture appearance model with 3...

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Chinese Conference on Pattern Recognition

作者： Huang, Xiangsheng Gong, Lujin Wang, Xiaoyan Institute of Automation Chinese Academy of Sciences Beijing 100190 China State Key Laboratory of Scientific and Engineering Computing Institute of Computational Mathematics and Scientific/Engineering Computing AMSS Beijing 100190 China College of Computer Science and Technology Zhejiang University of Technology Hangzhou 310023 China

ISBN: (纸本)9781424472109

Fast facial points fitting plays an important role in applications such as Human-computer Interaction, entertainment, surveillance, and is highly relevant to the techniques of facial expression analysis, face recognition, 3D face model generation, etc. Active Appearance Models (AAMs) are generative models commonly used to fit face. They are sensitive to illumination and expression changes because they use only raw intensity to build observation models. In this paper, a real time facial points fitting approach using mixture observation models is presented. Furthermore, the 3D modes are used to constrain the AAM so that it can only generate model instances that can also be generated with the 3D modes. Finally, we give a derivative process for fast energy minimization using the inverse compositional algorithm. A coarse-to-fine fitting strategy is used for realtime and robust facial points fitting. We apply this algorithm to facial expression cloning of 3D Avatar system. Experimental results demonstrate that fitting the AAM with mixture observation models and 3D constraint outperforms other classical algorithms. ©2010 IEEE.

关键词： Mixtures

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Half-life of the Iπ = 4− Intruder State in 34P Using LaBr3:Ce Fast Timing

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Journal of Physics: Conference Series 2012年第1期381卷

作者： P J R Mason T Alharbi P H Regan N Mǎrginean Zs Podolyàk N Alkhomashi P C Bender M Bowry M Bostan D Bucurescu A M Bruce G Cǎta-Danil I Cǎta-Danil R Chakrabarti D Deleanu P Detistov M N Erduran D Filipescu U Garg T Glodariu D Ghiţǎ S S Ghugre A Kusoglu R Mǎrginean C Mihai M Nakhostin A Negret S Pascu C Rodríguez Triguero T Sava E C Simpson A K Sinha L Stroe G Suliman N V Zamfir Department of Physics University of Surrey Guildford Surrey GU2 7XH UK Department of Physics Almajmaah University PO Box 66 11952 Saudi Arabia Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH) R-76900 Bucharest Romania KACST P.O Box 6086 Riyadh 11442 Saudi Arabia Department of Physics Florida State University Tallahassee Florida USA Department of Physics Istanbul University 34134 Istanbul Turkey School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4GJ UK UGC-DAE Consortium for Scientific Research Kolkata Centre Kolkata 700098 India Institute for Nuclear Research and Nuclear Energy (INRNE) Bulgarian Academy of Sciences Sofia Bulgaria Department of Computer Engineering Istanbul Sabahattin Zaim University Istanbul Turkey Department of Physics University of Notre Dame Notre Dame Indiana 46556 USA

The half-life of the Iπ = 4− intruder state at 2305 keV in 3415P19 has been measured using γ-ray coincident fast timing with LaBr3:Ce scintillation detectors. Excited states in 34P were populated in the 18O(18O,pn)34P reaction at a beam energy of 36 MeV at the Tandem Laboratory at the National Institute of Physics and Nuclear Engineering, Bucharest, Romania. A half-life of t1/2 ~ 2 ns was obtained for the 4− state, giving an M2 reduced transition probability consistent with similar transitions in this mass region and confirming the intruder-parity nature of the state.

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Fast Fourier-Galerkin methods for first-kind logarithmic-kernel integral equations on open arcs

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Science China Mathematics 2010年第1期53卷 1-22页

作者： WANG Bo1,WANG Rui2 & XU YueSheng3,4,1Academy of Mathematics and Systems Science,Chinese Academy of sciences,Beijing 100190,China 2School of Information Science and Engineering,Graduate University of the Chinese Academy of sciences,Beijing 100190,China 3Department of Mathematics,Syracuse University,Syracuse,NY 13244,USA 4Department of scientific computing and computer Applications,Sun Yat-sen University,Guangzhou 510275,China 1. Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China2. School of Information Science and Engineering Graduate University of the Chinese Academy of Sciences Beijing 100190 China3. Department of Mathematics Syracuse University Syracuse NY 13244 USA4. Department of Scientific Computing and Computer Applications Sun Yat-sen University Guangzhou 510275 China

We propose a fully discrete fast Fourier-Galerkin method for solving an integral equation of the first kind with a logarithmic kernel on a smooth open arc,which is a reformulation of the Dirichlet problem of the Laplace equation in the *** optimal convergence order and quasi-linear complexity order of the proposed method are established.A precondition is *** this method with an efficient numerical integration algorithm for computing the single-layer potential defined on an open arc,we obtain the solution of the Dirichlet problem on a smooth open arc in the *** examples are presented to confirm the theoretical estimates and to demonstrate the efficiency and accuracy of the proposed method.

关键词： Dirichlet problem open arc singular boundary integral equations Fourier-Galerkin methods logarithmic potentials

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EMD strategy for activation detection in functional MRI of the human brain

EMD strategy for activation detection in functional MRI of t...

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2010 International Conference on computer Application and System Modeling, ICCASM 2010

作者： Zheng, Tianxiang Yang, Lihua Jiang, Tianzi Department of Tourism Management Shenzhen Tourism College Jinan University Shenzhen China Department of Scientific Computing and Computer Application School of Mathematics and Computational Science Sun Yat-sen University Guangzhou China National Laboratory of Pattern Recognition Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781424472369

This article investigates how the Empirical Mode Decomposition (EMD) algorithm, a newly-developed and effective technique in the fields of signal processing and time-frequency analysis, is introduced and applied to activation detection in task-related functional Magnetic Resonance Imaging (fMRI) of the human brain. The method is illustrated using fMRI data simulated under one paradigm as well as one real dataset, and its performance is compared to those of a leading model based (General Linear Model - GLM) and a leading data-driven (Region Growing Method - RGM) approach. It is concluded that the proposed method achieves much better performance than the computationally inefficient RGM and is slightly more sensitive than GLM. Experimental results support its efficiency and sensitivity, which indicates that it is to become a viable alternative to the fMRI analysis. © 2010 IEEE.

关键词： Empirical mode decomposition

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