Results 21 to 30 of about 58,184 (331)

Set Covering Problem in Transport Nets Expanding Models [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2012
The article deals with the problem of optimal coverage of utility centres in transport network. We can often encounter similar types of tasks in a real life.
Dušan TEICHMANN   +2 more
doaj   +1 more source

A single strand: A simplified approach to DNA origami

open access: yesFrontiers in Chemistry, 2023
Just as a single polypeptide strand can self-fold into a complex 3D structure, a single strand of DNA can self-fold into DNA origami. Most DNA origami structures (i.e., the scaffold-staple and DNA tiling systems) utilize hundreds of short single-stranded
Micah Yang   +3 more
doaj   +1 more source

Factor maps between tiling dynamical systems [PDF]

open access: yes, 1998
We show that there is no Curtis-Hedlund-Lyndon Theorem for factor maps between tiling dynamical systems: there are codes between such systems which cannot be achieved by working within a finite window.
Petersen, Karl
core   +5 more sources

Quantum Spins and Quasiperiodicity: a real space renormalization group approach [PDF]

open access: yes, 2003
We study the antiferromagnetic spin-1/2 Heisenberg model on a two-dimensional bipartite quasiperiodic structure, the octagonal tiling -- the aperiodic equivalent of the square lattice for periodic systems.
A. Jagannathan   +8 more
core   +1 more source

One Tile to Rule Them All: Simulating Any Tile Assembly System with a Single Universal Tile [PDF]

open access: green, 2014
In the classical model of tile self-assembly, unit square tiles translate in the plane and attach edgewise to form large crystalline structures. This model of self-assembly has been shown to be capable of asymptotically optimal assembly of arbitrary shapes and, via information-theoretic arguments, increasingly complex shapes necessarily require ...
Erik D. Demaine   +6 more
openalex   +5 more sources

In search of multipolar order on the Penrose tiling [PDF]

open access: yes, 2008
Based on Monte Carlo calculations, multipolar ordering on the Penrose tiling, relevant for two-dimensional molecular adsorbates on quasicrystalline surfaces and for nanomagnetic arrays, has been analyzed.
Birnbaum G   +11 more
core   +2 more sources

Dry sand as a specialized layer to improve the acoustic insulation between rooms one above another

open access: yesMateriales de Construccion, 2013
This work presents and analyses the experimental field results of the sound insulation from airborne and impact noise of the horizontal separating elements commonly used in the past, in which a uniform layer of sand was placed on top of the floor ...
C. Díaz   +3 more
doaj   +1 more source

Automated Detection Approaches for Source Code Plagiarism in Students' Submissions [PDF]

open access: yesJournal of Computing and Communication, 2023
Code plagiarism is a significant concern in software development, as it compromises the integrity of original work and can lead to ethical and legal consequences.
Essam Eliwa   +3 more
doaj   +1 more source

Randomness and Topological Invariants in Pentagonal Tiling Spaces

open access: yesDiscrete Dynamics in Nature and Society, 2011
We analyze substitution tiling spaces with fivefold symmetry. In the substitution process, the introduction of randomness can be done by means of two methods which may be combined: composition of inflation rules for a given prototile set and tile ...
Juan García Escudero
doaj   +1 more source

Tensile bond strength of adhesive mortars with hydroxypropyl methyl cellulose and vinyl acetate-ethylene polymers after thermal storage

open access: yesAnais da Academia Brasileira de Ciências, 2023
The properties of adhesive mortars can change due to heating, compromising the durability of the coating systems. The aim of this article was to evaluate the influence of cement and polymer contents on the tensile bond strength of adhesive mortars after ...
LEIDIMARA A.M. KOTOVIEZY   +5 more
doaj   +1 more source

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