Results 21 to 30 of about 19,453 (266)

Volumetric Representation and Sphere Packing of Indoor Space for Three-Dimensional Room Segmentation

open access: yesISPRS International Journal of Geo-Information, 2021
Room segmentation is a basic task for the semantic enrichment of point clouds. Recent studies have mainly projected single-floor point clouds to binary images to realize two-dimensional room segmentation.
Fan Yang   +5 more
doaj   +1 more source

Sphere Packing with Limited Overlap [PDF]

open access: yesCoRR, 2014
The classical sphere packing problem asks for the best (infinite) arrangement of non-overlapping unit balls which cover as much space as possible. We define a generalized version of the problem, where we allow each ball a limited amount of overlap with other balls. We study two natural choices of overlap measures and obtain the optimal lattice packings
Iglesias Ham, Mabel   +2 more
openaire   +5 more sources

Lattice black branes: sphere packing in general relativity

open access: yesJournal of High Energy Physics, 2018
We perturbatively construct asymptotically ℝ1,3×T2 $$ {\mathrm{\mathbb{R}}}^{1,3}\times {\mathbb{T}}^2 $$ black branes with multiple inhomogeneous directions and show that some of them are thermodynamically preferred over uniform branes in both the ...
Óscar J. C. Dias   +2 more
doaj   +1 more source

Performance Analysis of Sphere Packed Aided Differential Space-Time Spreading with Iterative Source-Channel Detection

open access: yesSensors, 2021
The introduction of 5G with excessively high speeds and ever-advancing cellular device capabilities has increased the demand for high data rate wireless multimedia communication.
Hameed Ullah Khan   +5 more
doaj   +1 more source

METHODOLOGICAL BASIS OF SOLVING SPHERE PACKING PROBLEM: TRANSFORMATION OF KNAPSACK PROBLEM TO OPEN DIMENSION PROBLEM

open access: yesСучасні інформаційні системи, 2019
The subject matter of the paper is the problem of optimal packing of spheres of different dimension into a container of arbitrary geometric shape. The goal is to construct a mathematical model which associates different statements of the problem.
Georgiy Yaskov, Sergiy Shekhovtsov
doaj   +1 more source

Investigation of algorithms for coagulate arrangement in fundus images [PDF]

open access: yesКомпьютерная оптика, 2018
Diabetic retinopathy is one of the most frequent complications of diabetes, which leads to severe consequences, including rapid and irreversible vision loss.
Aleksandr Shirokanev   +3 more
doaj   +1 more source

Densest-Packed Columnar Structures of Hard Spheres: An Investigation of the Structural Dependence of Electrical Conductivity

open access: yesFrontiers in Physics, 2021
Identical hard spheres in cylindrical confinement exhibit a rich variety of densest-packed columnar structures. Such structures, which generally vary with the corresponding cylinder-to-sphere diameter ratio D, serve as structural models for a variety of ...
Panpan Ma, Ho-Kei Chan
doaj   +1 more source

Impact Measurement on Apple and Orange Packinghouses Using a Wireless Instrumented Sphere

open access: yesChemical Engineering Transactions, 2015
Physical damage can be considered one of the main causes of postharvest losses for fruits and vegetables. One of the challenges is to measure the impact magnitude on packing lines.
Y. Roa   +5 more
doaj   +1 more source

Restriction enzymes use a 24 dimensional coding space to recognize 6 base long DNA sequences.

open access: yesPLoS ONE, 2019
Restriction enzymes recognize and bind to specific sequences on invading bacteriophage DNA. Like a key in a lock, these proteins require many contacts to specify the correct DNA sequence.
Thomas D Schneider, Vishnu Jejjala
doaj   +1 more source

Sphere Packings in 212 Dimensions

open access: yesAxioms
This paper investigates cylindrical sphere packings, that is, patterns of uniform spheres with mutually disjoint interiors which are all tangent to a common cylinder.
Kenneth Stephenson
doaj   +1 more source

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