Results 1 to 10 of about 3,800,436 (239)

When can a net fold to a polyhedron?

open access: closedComputational Geometry, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Biedl, Therese, Lubiw, Anna, Sun, Julie
semanticscholar   +4 more sources

Fine structure of Tibetan kefir grains and their yeast distribution, diversity, and shift. [PDF]

open access: yesPLoS ONE, 2014
Tibetan kefir grains (TKGs), a kind of natural starter for fermented milk in Tibet, China, host various microorganisms of lactic acid bacteria, yeasts, and occasionally acetic acid bacteria in a polysaccharide/protein matrix.
Man Lu   +7 more
doaj   +2 more sources

Affinely adjustable robust optimal scheduling of a power system considering the flexibility of supply and demand

open access: yesEnergy Conversion and Economics
As the integration of renewable energy sources, such as wind power and photovoltaics, continues, the issue of system uncertainty has become more pronounced. This paper proposes a stochastic power system dispatch method based on affinely adjustable robust
Yumin Zhang   +5 more
doaj   +2 more sources

Every Combinatorial Polyhedron Can Unfold with Overlap [PDF]

open access: yesCanadian Conference on Computational Geometry, 2022
Ghomi proved that every convex polyhedron could be stretched via an affine transformation so that it has an edge-unfolding to a net [Gho14]. A net is a simple planar polygon; in particular, it does not self-overlap.
J. O'Rourke
semanticscholar   +1 more source

Metal-Organic Polyhedron with Four Fe(III) Centers Producing Enhanced T1 Magnetic Resonance Imaging Contrast in Tumors.

open access: yesInorganic Chemistry, 2022
A metal-organic polyhedron (MOP) with four paramagnetic Fe(III) centers was studied as a magnetic resonance imaging (MRI) probe. The MOP was characterized in solution by using electron paramagnetic resonance (EPR), UV-visible (UV-vis) spectroscopies ...
Gregory E. Sokolow   +7 more
semanticscholar   +1 more source

Universal folding pathways of polyhedron nets [PDF]

open access: yesProceedings of the National Academy of Sciences, 2018
Significance What makes an object successful at thermal folding? Protein scientists study how sequence affects the pathways by which chained amino acids fold and the structures into which they fold. Here we investigate the inverse problem: Starting with a 3D object as a polyhedron we ask, which ones, among the many choices of 2D unfoldings ...
Paul M, Dodd   +2 more
openaire   +2 more sources

Limit analysis of strut nets [PDF]

open access: yesMathematics and mechanics of solids, 2022
Truss structures composed of members that work exclusively in tension or in compression appear in several problems of science and engineering, e.g., in the study of the resisting mechanisms of masonry structures, as well as in the design of spider web ...
A. Amendola   +5 more
semanticscholar   +1 more source

TEACHERS’ CHALLENGES IN TEACHING GEOMETRY USING AUGMENTED REALITY LEARNING MEDIA

open access: yesAksioma: Jurnal Program Studi Pendidikan Matematika, 2021
Abstrak Geometri berperan penting terhadap penguasaan matematika siswa. Dalam penerapannya, siswa masih terkendala dalam membayangkan suatu objek abstrak. Dibutuhkan suatu media pembelajaran yang tepat yang digunakan oleh guru dan mengikuti perkembangan
Gabriella Intan Permatasari   +1 more
doaj   +1 more source

Vanishing polyhedron and collapsing map [PDF]

open access: yes, 2015
In this paper we give a detailed proof of the fact that the Milnor fiber $$X_t$$Xt of an analytic complex isolated singularity function defined on a reduced n-equidimensional analytic complex space X is a regular neighborhood of a polyhedron $$P_t ...
Lê Dũng Tráng, A. Neto
semanticscholar   +1 more source

Closed Locally Minimal Networks on the Surfaces of Convex Polyhedra

open access: yesМоделирование и анализ информационных систем, 2013
Closed locally minimal networks can be viewed as “branching” closed geodesics. We study such networks on the surfaces of convex polyhedra and discuss the problem of describing the set of all convex polyhedra that have such networks.
N. P. Strelkova
doaj   +1 more source

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