This paper reports on an on-going project undertaken within the University of Rome at Tor Vergata to automate the business processes of a class of administrative organizations. The experience gained and the lessons le...
Let A= (aij)∈Cn×n and ri = ∑ j≠i｜aij｜. Suppose thatforeach row of A there isatleastonenonzero off-diagonalentry. Itis proved thatalleigenvalues ofAarecontained in Ω～= ∪aij≠0,i≠j｛z∈C:｜z- aii｜｜z- ...
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Let A= (aij)∈Cn×n and ri = ∑ j≠i｜aij｜. Suppose thatforeach row of A there isatleastonenonzero off-diagonalentry. Itis proved thatalleigenvalues ofAarecontained in Ω～= ∪aij≠0,i≠j｛z∈C:｜z- aii｜｜z- ajj｜≤rirj｝. The resultre- duces the num berofovals in originalBrauer'stheorem in m any cases. Eigenval- ues(and associated eigenvectors) thatlocate in theboundary ofΩ～ arediscussed.
Ever-increasing size and complexity of software applications and libraries in parallel scientificcomputing is making implementation in the programming languages traditional for this field-FORTRAN 77 and C-impractical...
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We study the computational, communication, and scalability characteristics of a Computational Fluid Dynamics application, which solves the time accurate flow field of a jet using the compressible Navier-Stokes equatio...
ISBN:
(纸本)9780897918169
We study the computational, communication, and scalability characteristics of a Computational Fluid Dynamics application, which solves the time accurate flow field of a jet using the compressible Navier-Stokes equations, on a variety of parallel architectural platforms. The platforms chosen for this study are a cluster of workstations (the LACE experimental testbed at NASA Lewis), a shared memory multiprocessor (the Cray YMP), distributed memory multiprocessors with different topologies - the IBM SP and the Cray T3D. We investigate the impact of various networks, connecting the cluster of workstations, on the performance of the application and the overheads induced by popular message passing libraries used for parallelization. The work also highlights the importance of matching the memory bandwidth to the processor speed for good single processor performance. By studying the performance of an application on a variety of architectures, we are able to point out the strengths and weaknesses of each of the example computing platforms
In this paper, we focus on the problem of sensor array calibration in the presence of noise field uncertainties. The objective is to compute a reliable estimate of the array response vector given finite sample estimat...
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Background A group of UKexperts on scientific Visualization and its associated applications gathered at The Cosener's House in Abingdon, Oxford shire (UK) in February 1991 to consider all aspects of scientif...
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ISBN:
(数字)9783642769429
ISBN:
(纸本)9783642769443
Background A group of UKexperts on scientific Visualization and its associated applications gathered at The Cosener's House in Abingdon, Oxford shire (UK) in February 1991 to consider all aspects of scientific visualization and to produce a number of documents: • a detailed summary of current knowledge, techniques and appli cations in the field (this book); • an Introductory Guide to Visualization that could be widely dis tributed to the UK academic community as an encouragement to use visualization techniques and tools in their work; • a Management Report (to the UK Advisory Group On computer Graphics - AGOCG) documenting the principal results of the workshop and making recommendations as appropriate. This book proposes a framework through which scientific visualiza tion systems may be understood and their capabilities described. It then provides overviews of the techniques, data facilities and human-computer interface that are required in a scientific visualiza tion system. The ways in which scientific visualization has been applied to a wide range of applications is reviewed and the available products that are scientific visualization systems or contribute to sci entific visualization systems are described. The book is completed by a comprehensive bibliography of literature relevant to scientific visualization and a glossary of terms. VI scientific Visualization Acknowledgements This book was predominantly written during the workshop in Abingdon. The participants started from an "input document" pro duced by Ken Brodlie, Lesley Ann Carpenter, Rae Earnshaw, Julian Gallop (with Janet Haswell), Chris Osland and Peter Quarendon.
This book constitutes thoroughly refereed post-conference proceedings of the workshops of the 16th International Conference on Parallel computing, Euro-Par 2010, held in Ischia, Italy, in August/September 2010. The pa...
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ISBN:
(数字)9783642218781
ISBN:
(纸本)9783642218774
This book constitutes thoroughly refereed post-conference proceedings of the workshops of the 16th International Conference on Parallel computing, Euro-Par 2010, held in Ischia, Italy, in August/September 2010. The papers of these 9 workshops HeteroPar, HPCC, HiBB, CoreGrid, UCHPC, HPCF, PROPER, CCPI, and VHPC focus on promotion and advancement of all aspects of parallel and distributed computing.
The two-volume set LNAI 7818 + LNAI 7819 constitutes the refereed proceedings of the 17th Pacific-Asia Conference on Knowledge Discovery and Data Mining, PAKDD 2013, held in Gold Coast, Australia, in April 2013. The t...
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ISBN:
(数字)9783642374562
ISBN:
(纸本)9783642374555
The two-volume set LNAI 7818 + LNAI 7819 constitutes the refereed proceedings of the 17th Pacific-Asia Conference on Knowledge Discovery and Data Mining, PAKDD 2013, held in Gold Coast, Australia, in April 2013.
The total of 98 papers presented in these proceedings was carefully reviewed and selected from 363 submissions. They cover the general fields of data mining and KDD extensively, including pattern mining, classification, graph mining, applications, machine learning, feature selection and dimensionality reduction, multiple information sources mining, social networks, clustering, text mining, text classification, imbalanced data, privacy-preserving data mining, recommendation, multimedia data mining, stream data mining, data preprocessing and representation.
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