Results 81 to 90 of about 4,335,157 (373)

Good quality virtual realization of unit disk graphs

Journal of Computational Geometry, 2011
We consider the problem of finding a realization of an n-vertex unit disk graph (UDG) expressed in general form, say, as an adjacency matrix. The problem is to construct an embedding of the graph in low-dimensional Euclidean space so that the ratio of ...
Sriram Pemmaraju, Imran Pirwani
doaj   +1 more source

Disk-Halo Interaction - I. Three-Dimensional Evolution of the Galactic Disk

, 2000
The results of a three-dimensional model for disk-halo interaction are presented here. The model considers explicitly the input of energy and mass by isolated a nd correlated supernovae in the disk.
de Avillez, Miguel A.
core   +2 more sources

Coefficient estimates of analytic endomorphisms of the unit disk fixing a point with applications to concave functions [PDF]

Kyoto Journal of Mathematics, 2015
In this note, we discuss the coefficient regions of analytic self-maps of the unit disk with a prescribed fixed point. As an application, we solve the Fekete-Szegő problem for normalized concave functions with a prescribed pole in the unit disk.
Rintaro Ohno, T. Sugawa
semanticscholar   +1 more source

Unit Disk Cover Problem

, 2012
Given a set ${\cal D}$ of unit disks in the Euclidean plane, we consider (i) the {\it discrete unit disk cover} (DUDC) problem and (ii) the {\it rectangular region cover} (RRC) problem. In the DUDC problem, for a given set ${\cal P}$ of points the objective is to select minimum cardinality subset ${\cal D}^* \subseteq {\cal D}$ such that each point in $
Acharyya, Rashmisnata, B., Manjanna, Das, Gautam K.   +2 more
openaire   +2 more sources

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Balanced Line Separators of Unit Disk Graphs [PDF]

Computational Geometry, 2017
We prove a geometric version of the graph separator theorem for the unit disk intersection graph: for any set of $n$ unit disks in the plane there exists a line $\ell$ such that $\ell$ intersects at most $O(\sqrt{(m+n)\log{n}})$ disks and each of the halfplanes determined by $\ell$ contains at most $2n/3$ unit disks from the set, where $m$ is the ...
Carmi, Paz, Chiu, Man Kwun, Katz, Matthew J., Korman, Matias, Okamoto, Yoshio, van Renssen, André, Roeloffzen, Marcel, Shiitada, Taichi, Smorodinsky, Shakhar   +8 more
openaire   +3 more sources

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

On the Bohr inequality

, 2016
The Bohr inequality, first introduced by Harald Bohr in 1914, deals with finding the largest radius $r ...
A. Aytuna, A. Defant, A. Defant, A. Defant, A. Defant, C. Bénéteau, C. Chu, E. Bombieri, E. Bombieri, E.C. Titchmarsh, F. Bayart, G. Kresin, G. Popescu, H. Bohr, H. Hamada, H. Hamada, H.F. Bohnenblustmm, H.P. Boas, H.P. Boas, H.T. Kaptanoǧlu, L. Aizenberg, L. Aizenberg, L. Aizenberg, L. Aizenberg, L. Aizenberg, L. Branges de, L.K. Hua, M. Tomić, P. Lassère, P.B. Djakov, P.G. Dixon, P.L. Duren, R. Balasubramanian, R. Fournier, R.M. Ali, R.M. Ali, S. Dineen, S. Dineen, S. Ponnusamy, S. Sidon, Sh. Chen, Sh. Chen, T. Liu, V.I. Paulsen, V.I. Paulsen, V.I. Paulsen, Y. Abu-Muhanna, Y. Abu-Muhanna, Y. Abu-Muhanna, Y. Abu-Muhanna, Y. Abu-Muhanna, Z. Abdulhadi, Z. Guadarrama, Z. Mao   +53 more
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

Advanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou, Kenny A. van Kampen, Pierpaolo Fucile, Carlos Mota, Lorenzo Moroni   +4 more
wiley   +1 more source