24,892 Hits in 3.4 sec

Development of Innovative Mechanical Flexible Solar Array Architecture

Bernard Boulanger, Yannick Baudassé, François Guinot, Laurent D'abrigeon, Mikaël Thibaudeau, Marina Heim, Fabrice Buffe, Etienne Rapp, A. Fernandez
2017 E3S Web of Conferences  
THALES ALENIA SPACE used again flexible solar array mock-up, performed deployment/coiling tests with innovative tape springs.  ...  Flexible solar array architecture is proposed instead of rigid one, for high power solar array used from space tug mission to GEO satellite one, but also for specific scientific mission.  ...  -Constellations Applications are good candidates for flexible array use while this solution is a great competitiveness lever in addition of any parallel development for network and cells cost saving.  ... 
doi:10.1051/e3sconf/20171601005 fatcat:ktk43kanpncq5fcllymq5z6kru

Noise figure limits for circular loop MR coils

Ananda Kumar, William A. Edelstein, Paul A. Bottomley
2009 Magnetic Resonance in Medicine  
The purpose of this study is to determine these relationships in order to optimize array design and to investigate possible limits to the number of channels that can reasonably benefit an MR system.  ...  With the advent of parallel imaging using large numbers of loop elements [1] along with high-field MR, the geometric size of the loops is critical in determining detection and/or transmission efficiency  ...  Loop radius vs MR frequency for single tape coils. (a) Array geometries (i-v) for wire loops and flat tape loops.  ... 
doi:10.1002/mrm.21948 pmid:19253376 pmcid:PMC2869245 fatcat:yhblolkvhfdqxb3x7jdvvb5nty

Numerical models for ac loss calculation in large-scale applications of HTS coated conductors

Loïc Quéval, Víctor M R Zermeño, Francesco Grilli
2016 Superconductors Science and Technology  
Such models could be used to design and optimize large-scale HTS devices.  ...  While the models work well for the simulation of individual tapes or relatively small assemblies, their direct applicability to devices involving hundreds or thousands of tapes, as for example coils used  ...  For a given device using HTS coated conductor tapes, this reduces to calculating hysteretic losses of a stack or an array of tapes for at least one period.  ... 
doi:10.1088/0953-2048/29/2/024007 fatcat:7dhsbaq67fbghilt4aogtzdyxq

Optimized management of large-scale data sets stored on tertiary storage systems

B. Reiner, K. Hahn
2004 IEEE Distributed Systems Online  
A new system, optimized toward high-performance computing, extends the RasDaMan (Raster Data Management) database management system to allow flexible management of multidimensional spatiotemporal data  ...  For data access in high-performance computing (HPC), tertiary storage systems' main drawbacks are high access latency compared to hard-disk devices and no random access capability.  ...  Another research topic is parallel query support for multidimensional data. We hope to exploit RasDaMan's inter-and intra-object parallelism techniques to improve tertiary storage access performance.  ... 
doi:10.1109/mdso.2004.5 fatcat:7zrsrhpnmra7ff5u6agdn4citm

GPU-accelerated adjoint algorithmic differentiation

Felix Gremse, Andreas Höfter, Lukas Razik, Fabian Kiessling, Uwe Naumann
2016 Computer Physics Communications  
The vectorization allowed usage of optimized parallel libraries during forward and reverse passes which resulted in high speedups for the vectorized CPU version compared to the naive reference implementation  ...  Parallelization is difficult because threads need to synchronize their accesses during taping and backpropagation.  ...  Acknowledgments This work was supported by the European Research Council (ERC Starting Grant 309495: NeoNaNo) and the German Ministry for Education and Research (BMBF) (funding programs Virtual Liver (  ... 
doi:10.1016/j.cpc.2015.10.027 pmid:26941443 pmcid:PMC4772124 fatcat:pnyxd3butjdohcxbbib7nvctju

A high-performance application data environment for large-scale scientific computations

Xiaohui Shen, Wei-keng Liao, A. Choudhary, G. Memik, M. Kandemir
2003 IEEE Transactions on Parallel and Distributed Systems  
(as in high-performance storage management systems and parallel file systems), or they sacrifice significant performance in exchange for ease-of-use and portability (as in traditional database management  ...  computational and storage power on parallel architectures.  ...  The authors would like to thank Reagan Moore for discussions and help with SDSC resources.  ... 
doi:10.1109/tpds.2003.1255638 fatcat:aadiuvpwt5dfzicenrip5uytpq

A novel application development environment for large-scale scientific computations

X. Shen, W. Liao, A. Choudhary, G. Memik, M. Kandemir, S. More, G. Thiruvathukal, A. Singh
2000 Proceedings of the 14th international conference on Supercomputing - ICS '00  
Our results demonstrate that our novel application development environment provides both ease-of-use and high performance for large-scale, I/O-intensive scientific applications.  ...  T h i r u v a t h u k a l , t and A, S i n g h t C e n t e r for Parallel a n d D i s t r i b u t e d C o m p u t i n g D e p a r t m e n t o f E l e c t r i c a l and C o m p u t e r E n g i n e e r i  ...  We would like to thank Reagan Moore for discussions and help with SDSC resources.  ... 
doi:10.1145/335231.335258 dblp:conf/ics/ShenLCMKMTS00 fatcat:gskhprdo7jfatlxco7m7qrvmqi

Critical Evaluation of Existing External Sorting Methods in the Perspective of Modern Hardware

Martin Krulis
2015 Databases, Texts, Specifications, Objects  
These methods were originally designed for systems with small amount of operating (internal) memory and magnetic tapes used as external memory.  ...  External sorting methods which are designed to order large amounts of data stored in persistent memory are well known for decades.  ...  [6] which proposes an adaptation of Mergesort for inmemory parallel data streaming systems.  ... 
dblp:conf/dateso/Krulis15 fatcat:nektuqjoejcxlaaijmzjj5b6jq

A quantum analog of Huffman coding

S.L. Braunstein, C.A. Fuchs, D. Gottesman, Hoi-Kwong Lo
2000 IEEE Transactions on Information Theory  
In this section, we use the model of a quantum gate array for quantum computation.  ...  Notice that the length of the second tape is dlog l max e which is generally small compared to n. The usage of the second tape is a small price to pay for efficient parallel implementation.  ... 
doi:10.1109/18.850709 fatcat:yw4nbshxgfalhiwgjzkdnihnzu

Page 2375 of Mathematical Reviews Vol. , Issue 80F [page]

1980 Mathematical Reviews  
linear bounded automata, rectangular array-bounded cellular space acceptors, parallel-sequential array automata as well as multiscanner parallel-sequential array automata.  ...  The proof uses a parallel stacking tech- nique. Kurt Mehlhorn (Saarbriicken) Peleg, Shmuel 80f:68095 Maximal derivations for probabilistic strings in stochastic languages.  ... 

Page 3961 of Mathematical Reviews Vol. , Issue 91G [page]

1991 Mathematical Reviews  
We give almost optimal algorithms for pattern matching in arrays and for related problems: longest common subarray, longest repeated subarray and longest symmet- ric subarray.  ...  Summary: “We present several new parallel algorithms in the field of string and array processing.  ... 

Tape casting of high dielectric ceramic composite substrates for microelectronics application

Alfred I.Y Tok, Freddy Y.C Boey, K.A Khor
1999 Journal of Materials Processing Technology  
An optimal setting between the casting speed and the blade gap setting is, therefore, needed in order to achieve accurate and reproducible results when performing tape casting.  ...  Tape casting was performed on a batch process type caster, and the tapes were cast using varying blade gaps and casting speeds.  ...  They assumed a Newtonian¯ow for the slurry in a parallel channel consisting of both a Couette and Poiseuille¯ow, and obtained the following equation for predicting tape thickness: tape 2 &h o & tape 1  ... 
doi:10.1016/s0924-0136(99)00131-4 fatcat:en5enpj5uzctxdal7bjy7fxfeu

Multi-layer Prefetching for Hybrid Storage Systems: Algorithms, Models, and Evaluations

Mais Nijim, Ziliang Zong, Xiao Qin, Yousef Nijim
2010 2010 39th International Conference on Parallel Processing Workshops  
In future systems with the nature of massive data processing and storing, hybrid storage systems opt for a solution to fulfill a variety of demands such as large storage capacity, high I/O performance  ...  Parallel storage systems have been highly scalable and widely used in support of data-intensive applications.  ...  The first component in PRE-DS is a SSD partitioning algorithm (or PaSSD for short), which dynamically partitions an array of SSDs among HDDs in such a way to maximize I/O performance.  ... 
doi:10.1109/icppw.2010.18 dblp:conf/icppw/NijimZQN10 fatcat:fzayrdpckfcvfpan6zwlkjtqha

Hierarchical data placement for navigational multimedia applications

Athena Vakali, Evimaria Terzi, Elisa Bertino, Ahmed Elmagarmid
2003 Data & Knowledge Engineering  
Storage issues need to be reconsidered for the new type of navigational multimedia applications, in order to improve system's performance.  ...  A navigational graph-based model (for the multimedia data representation) is proposed to guide the data placement under a hierarchical storage topology.  ...  The storage system involves both a tape library and a disk array in order to increase parallelization.  ... 
doi:10.1016/s0169-023x(02)00124-6 fatcat:etb5ba57s5hyjbi433ad4hvrvq

Inhomogeneity effects in HTS coated conductors used as resistive FCLs in medium voltage grids

Daniele Colangelo, Bertrand Dutoit
2012 Superconductors Science and Technology  
Layers thicknesses used in the simulations have been chosen by fitting the temperature dependence of real tape resistances.  ...  For Resistive Fault Current Limiters (RFCLs) based on high temperature superconducting coated conductors (HTS-CCs), inhomogeneity, in terms of critical current and geometrical imperfections such as stabilizer  ...  Each phase of the RFCL device is composed by several paralleled tapes to obtain the required total critical current (I c,tot ).  ... 
doi:10.1088/0953-2048/25/9/095005 fatcat:bd7rflufirdsfmf2yvyhbh35iy
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