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Page 4563 of Mathematical Reviews Vol. , Issue 92h [page]

1992 Mathematical Reviews  
{For the entire collection see MR 92a:00043.} 92h:68089 68U05 Wang, Y. L. [Wang, Yue Li]; Lee, R.C.T. (RC-NTHU); Chang, J.S. (Chang, Jui Hsiung] (RC-NTHU) Computing the convex hull in a hammock.  ...  /n MCC, and in addition the former operation needs to compute convex hulls of L and R.  ... 

Page 1832 of Mathematical Reviews Vol. , Issue 98C [page]

1998 Mathematical Reviews  
In order to make the algorithm practical, the author needs to replace the query strategy in each bucket in a hammock with an easier method; if K/n is small, the size of the bucket is small, where K is  ...  Under the nondegeneracy assumption that no three points are collinear, we characterize the point sets with three vertices on the convex hull that admit 4-connected triangulations.  ... 

Is there a single best estimator? Selection of home range estimators using area-under-the-curve

W David Walter, Dave P Onorato, Justin W Fischer
2015 Movement Ecology  
We used areaunder-the-curve to explore the fit of 8 estimators of home range to data collected with both GPS and concurrent very high frequency (VHF) technology on a terrestrial mammal, the Florida panther  ...  used and in comparison to first-and second-generation estimators.  ...  This study was funded in its entirety with panther license plate revenue accrued in the  ... 
doi:10.1186/s40462-015-0039-4 pmid:25973204 pmcid:PMC4429481 fatcat:vgxkweullzgspe3cgaz3qziv6u

Quasicrystal Tilings in Three Dimensions and Their Empires

Dugan Hammock, Fang Fang, Klee Irwin
2018 Crystals  
The projection method for constructing quasiperiodic tilings from a higher dimensional lattice provides a useful context for computing a quasicrystal's vertex configurations, frequencies, and empires (  ...  These techniques were used to compute the vertex configurations, frequencies and empires of icosahedral quasicrystals obtained as a projections of the D 6 and Z 6 lattices to R 3 and we present our analyses  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/cryst8100370 fatcat:4q5yjwpxy5cxnoy6vdyolqv6sa

Kit Algebras

Thomas Brüstle
2001 Journal of Algebra  
In this paper we introduce a method to construct certain tame algebras by glueing together smaller algebras.  ...  This provides a new interpretation of string algebras and leads to a large number of tame algebras which we call kit algebras.  ...  In the case H = H a considered here, the source is the projective A-module P a , whereas the sink is the injective hull I a of the simple A-module concentrated in the vertex a of A.  ... 
doi:10.1006/jabr.2000.8709 fatcat:tmrirsrrmfd3toe3qkbhve4mnq

How colorful are fruits? Limited color diversity in fleshy fruits on local and global scales

Kalliope E. Stournaras, Eugenia Lo, Katrin Böhning-Gaese, Eliana Cazetta, D. Matthias Dehling, Matthias Schleuning, Mary Caswell Stoddard, Michael J. Donoghue, Richard O. Prum, H. Martin Schaefer
2013 New Phytologist  
Using an avian color space to derive a sensory morphospace for fruit color, we tested four hypotheses of fruit color diversity: fruit colors occupy a limited area of the color space; they are less diverse  ...  The colors of fleshy fruits are considered to be a signal to seed-dispersing animals, but their diversity remains poorly understood.  ...  Field work in Peru was also supported partly by a grant from the German Academic Exchange Service to D.M.D.  ... 
doi:10.1111/nph.12157 pmid:23374020 fatcat:vlzuqy36obhungdplumojghyaq

Methods for Calculating Empires in Quasicrystals

Fang Fang, Dugan Hammock, Klee Irwin
2017 Crystals  
This paper reviews the empire problem for quasiperiodic tilings and the existing methods for generating the empires of the vertex configurations in quasicrystals, while introducing a new and more efficient  ...  that follows the work of N.G. de Bruijn on constructing a Penrose tiling as the dual to a pentagrid.  ...  Dugan Hammock helped reproduce the results using the multigrid method and helped produce the figures in this paper.  ... 
doi:10.3390/cryst7100304 fatcat:ozfuecwl4ndwhi33y2znubukqy

Page 1355 of Mathematical Reviews Vol. 24, Issue Index [page]

Mathematical Reviews  
T.; Chang, Jui Hsiung) Computing the convex hull in a hammock. 92h:68089 Wang, Zhengyan see Rote, Ginter; et al., 92i:68183 Waupotitsch, Roman see Edelsbrunner, Herbert; et al.  ...  Construction of the convex hull of a finite set of points on the basis of triangulation. (Russian) 92m:52026 Chirkov, M. K. see Dem‘yanovich, Yu.  ... 

The place-cell representation of volumetric space in rats [article]

Roddy M Grieves, Selim Jedidi-Ayoub, Karyna Mishchanchuk, Anyi Liu, Sophie Renaudineau, Kate J Jeffery
2019 bioRxiv   pre-print
We wirelessly recorded place cells in rats at they explored a cubic lattice climbing frame which could be aligned or tilted with respect to gravity.  ...  Place cells are spatially modulated neurons found in the hippocampus that underlie spatial memory and navigation: how these neurons represent 3D space is largely unknown.  ...  Third column shows the convex hull of the dwell time map as a grey outline and the convex hull of any detected place field(s) as separate (color-coded) polygons.  ... 
doi:10.1101/698175 fatcat:d3kkfdbdfnafxadbbdu7wqylti

Target detection with a contextual kernel orthogonal subspace projection

Luca Capobianco, Gustavo Camps-Valls, Lorenzo Bruzzone, Claudia Notarnicola, Francesco Posa
2008 Image and Signal Processing for Remote Sensing XIV  
The Orthogonal Subspace Projection (OSP) algorithm is substantially a kind of matched filter that requires the evaluation of a prototype for each class to be detected.  ...  The good performance of the proposed methods is illustrated in hyperspectral image target detection problems.  ...  ACKNOWLEDGMENTS The authors would like to thank Dr. M. Crawford at Purdue University (USA) for making the image dataset available, and Dr. J.  ... 
doi:10.1117/12.801735 fatcat:hnffcqm7sng6hj22kgqxsu3rom

Notes and Queries

1893 Scientific American  
As the boat Is mane of galvanized sheet iron, would ask if the hull will affect the compass ? If so, how can I remedy tbe same? A.  ...  The shoulder straps connected with the belt are also provided with similar buttons, the convex portions of which are in contact with the skin when the belt is worn, and there being electrical connections  ...  This splendid work contains a careful compilation of the most useful Receipts and Replies given in the Notes and Queries of correspondents as published in the �ci en tific A In e rican during the past  ... 
doi:10.1038/scientificamerican09161893-189b fatcat:7zgykubytzbgbbzj4ywze2yqcu

On tropical friezes associated with Dynkin diagrams [article]

Lingyan Guo
2012 arXiv   pre-print
We show that when C is the cluster category of a Dynkin quiver, the tropical friezes on C are in bijection with the n-tuples in Z^n, any tropical frieze f on C is of a special form, and there exists a  ...  Tropical friezes are the tropical analogues of Coxeter-Conway frieze patterns. In this note, we study them using triangulated categories.  ...  The author thanks Sophie Morier-Genoud for pointing out J. Propp's work [35] . She is supported by the China Scholarship Council (CSC). This is part of her Ph. D. thesis under the supervision of  ... 
arXiv:1201.1805v2 fatcat:s5artnaecbg5tfdx6y7gejhrzi

Hom-configurations in triangulated categories generated by spherical objects [article]

Raquel Coelho Simoes
2013 arXiv   pre-print
Hom- and Riedtmann configurations were studied in the context of stable module categories of selfinjective algebras and a certain orbit category C of the bounded derived category of a Dynkin quiver, which  ...  In this paper, we classify the (higher) Hom- and Riedtmann configurations for these categories, and link them with noncrossing partitions in the case w = -1.  ...  This work was partly carried out while the author was a Riemann fellow in the Institut für Algebra, Zahlentheorie und Diskrete Mathematik (IAZD), at the Leibniz Universität Hannover.  ... 
arXiv:1312.4769v1 fatcat:cpak6tpzpbfuhl6tc3e4zurtb4

Irregular distribution of grid cell firing fields in rats exploring a 3D volumetric space

Roddy M. Grieves, Selim Jedidi-Ayoub, Karyna Mishchanchuk, Anyi Liu, Sophie Renaudineau, Éléonore Duvelle, Kate J. Jeffery
2021 Nature Neuroscience  
In the present study, we report that, in rats foraging in a cubic lattice, grid cells maintained normal temporal firing characteristics and produced spatially stable firing fields.  ...  In three dimensions, theoretically the equivalent firing pattern would be a regular, hexagonal close packing of evenly sized spherical fields.  ...  ., 208647/Z/17/Z to S.J-A. and 213295/Z/18/Z to A.L.). The funder had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript.  ... 
doi:10.1038/s41593-021-00907-4 pmid:34381241 pmcid:PMC8553607 fatcat:3tnkg5chifh3lpignul7vwzkza

Non-Local Game of Life in 2D Quasicrystals

Fang Fang, Sinziana Paduroiu, Dugan Hammock, Klee Irwin
2018 Crystals  
Considering the emperor and its local patch as a quasiparticle, in this case a glider, its empire represents its field and the interaction between quasiparticles can be modeled as the interaction between  ...  Following a set of rules, we model the walk of life in different setups and we present examples of self-interaction and two-particle interactions in several scenarios.  ...  Acknowledgments: The authors thank Todd Rowland for his help in optimizing the code and for useful discussions. We also thank Paul Steinhardt for useful comments and suggestions.  ... 
doi:10.3390/cryst8110416 fatcat:ek27lwv62nbf7oivvwchy5vbai
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