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Further results on irregular, critical perfect systems of difference sets I: split systems
1992
Discrete Mathematics
Preserved Fulltext
Rogers, Further results on irregular, critical perfect systems of difference sets I: split systems, Discrete Mathematics 102 (1992) 25-45. ...
We discuss the bearing of these results on the study of critical perfect systems and on the multiplicarion theorem for these systems. ...
One of us, D.G. ...
doi:10.1016/0012-365x(92)90344-f
fatcat:mgy7np2kvfcurhx7jzzn4k7fza
Further results on irregular, critical perfect systems of difference sets II: systems without splits
1992
Discrete Mathematics
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Rogers, Further results on irregular, critical perfect systems of difference sets II: systems without splits, Discrete Mathematics 110 (1992) 135-154. ...
An (m, n; u, v; c)-system is a collection of components, m of valency u -1 and n of valency 0012-365X/92/$05.00 0 1992-Elsevier Science Publishers B.V. All rights reserved ...
A perfect system of difference sets with threshold c is a partition of a consecutive run of integers starting with c into full, pairwise disjoint difference sets. ...
doi:10.1016/0012-365x(92)90703-i
fatcat:vitf3bqsjfawnple6hgl36m4bi
Analysis of A Splitting Approach for the Parallel Solution of Linear Systems on GPU Cards
[article]
2015
arXiv
pre-print
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The split andparallelize ( SaP) approach seeks to partition the matrix A into diagonal sub-blocks A_i, i=1,...,P, which are independently factored in parallel. ...
We discuss an approach for solving sparse or dense banded linear systems A x = b on a Graphics Processing Unit (GPU) card. ...
Table A. 1 gives the list of tested matrices, specifying ...
arXiv:1509.07919v1
fatcat:z6434bxvmrcq3emoxzxvm54gcu
An arithmetic of complete permutations with constraints, I: an exposition of the general theory
1988
Discrete Mathematics
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of complete permutations with constraints or of irregular, extreme1 perfect systems of difference sets. ...
We develop an arithrretic of complete permutations of sy-ilmetric, integral bases; this arithmetic is comparable to that of perfect systems of difference sets with which there are several interrelations ...
critical perfect systems of difference sets), we show further, in Sections 7 and 8 (see [7]): 'Iheorem B1. ...
doi:10.1016/0012-365x(88)90001-5
fatcat:dn3cxkjitbbflbizwsz53iv2da
Multiscale cluster lens mass mapping - I. Strong lensing modelling
2009
Monthly notices of the Royal Astronomical Society
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Our model consists of (i) a multi-scale grid of radial basis functions with physically motivated profiles and (ii) a list of galaxy-scale potentials at the location of the cluster member galaxies. ...
This arrangement of potentials of different sizes allows to reach a high resolution for the model with a minimum number of parameters. We apply our model to the well studied cluster Abell 1689. ...
We set the splitting threshold to the critical surface density stated above. lensing regions, within which κ > 1. ...
doi:10.1111/j.1365-2966.2009.14654.x
fatcat:gewkyw5w3fhs3mh4246kpg2hp4
Track I
2014
Biomedical Engineering
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., Hanover, Germany, t.ripken@lzh.de Conclusion Although there was no significant effect on the calculated optical power standing for the accommodation ability, our results show a positive effect on the ...
The quantification of cell maturity at microscopic level is a tedious and error-prone task and heavily relies on the experience of the pathologists. ...
of Innovation, Science and Research of Northrhine-Westfalia, Germany for the funding of this work in the Med in.NRW program (grant no. 005-GW01-78A). ...
doi:10.1515/bmt-2014-5008
pmid:25385893
fatcat:4o7vqkhdmfgk5fjzqpeh74x5te
I. Bioengineering
2003
Technology and Health Care
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doses based on in situ dosimetrical measurements were not set until now. ...
Based on these results it could be assumed that there is some space for the reducing of entrance dose levels. ...
Acknowledgement: This work is sponsored by Ministry of Science and Technology of Republic of Croatia, project No. 023022 "Biomechanics of Human Locomotion, Control and Rehabilitation". ...
doi:10.3233/thc-2004-12202
fatcat:vdnpg2qonnbcjabk5goatbn6oy
Performance characterization of irregular I/O at the extreme scale
2016
Parallel Computing
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For our testing, we feed our model into I/O kernels of two well-known I/O data models (i.e., ADIOS and HDF) to measure the performance of the two applications' I/O under different I/O settings. ...
To this end, we quantify the impact of irregular I/O patterns on the I/O performance of scientific applications at the extreme scale by statistically modeling the irregular I/O behavior of two scientific ...
Based on our observations, we conclude that a further increase in the aggregation ratio will result in a further increase in I/O overhead and deterioration of the I/O scalability. ...
doi:10.1016/j.parco.2015.10.009
fatcat:jurcd2jqcbhnfejaytjpo3osx4
Fibonacci or quasi-symmetric phyllotaxis. Part I: why?
2016
Acta Societatis Botanicorum Poloniae
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irregular configurations exhibiting nearly equal number of helices in a quasi-square packing, the quasi-symmetric ones, which are a generalization of the whorled patterns. ...
The study of phyllotaxis has focused on seeking explanations for the occurrence of consecutive Fibonacci numbers in the number of helices paving the stems of plants in the two opposite directions. ...
Acknowledgments The authors thank Przemyslaw Prusinkiewicz for his critical and constructive reading of the article. The article benefitted from past work and discussions with Pau Atela. ...
doi:10.5586/asbp.3533
fatcat:5ro465jqkzgjbmcj6kt5juo3a4
I/O performance challenges at leadership scale
2009
Proceedings of the Conference on High Performance Computing Networking, Storage and Analysis - SC '09
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Listed in the top 5 fastest supercomputers of 2008, Intrepid runs computational science applications with intensive demands on the I/O system. ...
In this paper we present a case study of the I/O challenges to performance and scalability on Intrepid, the IBM Blue Gene/P system at the Argonne Leadership Computing Facility. ...
We will continue to study the behavior of the I/O system on Intrepid. Future work will focus on characterizing system performance over an extended period of time. ...
doi:10.1145/1654059.1654100
dblp:conf/sc/LangCLRHA09
fatcat:ztzndu4sivgbvctctnbkcstnaa
Forthcoming papers
1991
Discrete Mathematics
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Simpson, Disjoint covering systems of rational Beatty sequences A rational Beatty sequence is a sequence {[on + /I]}, where (Y is rational, n runs through the integers and square brackets denote integer ...
It is shown that the collection of all ('4) quadruples chosen from a set of eleven points can be partitioned into eleven mutually disioint 3-(10.4. 11 desiens in oreciselv 21 non-isomomhic wavn. R.J. ...
Rogers, Further results on irregular, critical perfect systems of difference sets An (m, n; U, u; c)-system is a collection of components, m of valency u -1 and n of valency u -1, whose difference sets ...
doi:10.1016/0012-365x(91)90052-4
fatcat:3g4xmr656vaczdgn4xzyl6d6ra
Author index to volume 110 (1992)
1992
Discrete Mathematics
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Rogers, Further results on irregular, critical perfect systems of difference sets II: systems without splits Holroyd, F.C., Reconstructing finite group actions and characters from subgroup information ...
Stinson, Further results on large sets of disjoint
group-divisible
designs
Chung, F., P. Diaconis and R. Graham,
Universal cycles for combinatorial
structures
Cochand,
M., A. Gaillard
and H. ...
., On sources in comparability graphs, with applications (Note) Parnes, S. and S.B. Ekhad, A WZ-style proof of Jacobi polynomials' generating function ( ...
doi:10.1016/0012-365x(92)90725-u
fatcat:7gid67tulnfixjh4klmz52a5rq
A Comparative Study of the Effects of Different Types of School-Building Ventilation on the Health of Pupils. I
1929
The Elementary school journal
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A COMPARATIVE STUDY OF THE EFFECTS OF DIFFER- ENT TYPES OF SCHOOL-BUILDING VENTILA- TION ON THE HEALTH OF PUPILS. I
RUSSELL L. C. ...
Split system (air through an opening on interior wall at height of 7 feet) . Split system (air through several openings in the ceiling) . ...
doi:10.1086/456348
fatcat:y7h4kxhh7bd2nftaggll2ynyme
Dislocations and plasticity in semiconductors. I — Dislocation structures and dynamics
1987
Revue de Physique Appliquée
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Les analogies et les différences entre les structures et les propriétés des dislocations dans les ESC et CSC sont aussi discutées. ...
On met l'accent sur les propriétés spécifiques des dislocations dans les SC aux températures plus basses que 0,6 Tf où le glissement des dislocations est régi par un mécanisme de Peierls qui témoigne de ...
one 1'i (cf. ...
doi:10.1051/rphysap:01987002209094100
fatcat:rp4tfxs77ff5tpujfpsfa6usvm
Fasciation in Lycopersicon. I. Genetic Analysis of Dominance Modification
1948
Genetics
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ACKNOWLEDGMENTS The major portion of this work was carried on under direction of DR. ORLAND E. WHITE, to whom much credit is due for helpful criticism. ...
Appreciation is expressed for the valuable assistance of DR. R. A. SILOW, Visiting Professor of Genetics, THE BLANDY EXPERIMENTAL FARM, UNIVERSITY OF VIRGINIA. ...
I n the majority of cases, however, examination of a mature fruit demonstrated fertility to be almost perfect. The gynoeciums in general seem to be the most altered and the calyx the least so. ...
pmid:17247288
pmcid:PMC1209415
fatcat:u56zm3f3mjhm5hgresnpb4zawe
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