Results 61 to 70 of about 4,725,478 (361)
Transitive Decompositions of Graphs and Their Links with Geometry and Origami [PDF]
The American Mathematical Monthly, 2010 A transitive decomposition of a graph is a partition of the edge or arc set giving a set of subgraphs which are preserved and permuted transitively by a group of automorphisms of the graph. In this paper we give some background to the study of transitive decompositions and highlight a connection with partial linear spaces.
openaire +3 more sources
Population Ecology, EarlyView.Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi +3 more
wiley +1 more source
VRM: A Unified Framework for Closed-Form Solutions of a Special Class of Serial Manipulators
International Journal of Advanced Robotic Systems, 2015 This paper proposes the virtual reconfiguration method (VRM) to construct the unified framework for closed-form solutions of a special class of serial manipulators.
Xijian Huo +3 more
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A stepwise emergence of evolution in the RNA world
FEBS Letters, EarlyView.How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley +1 more source
Shape and fluctuations of frustrated self-assembled nano ribbons
Nature Communications, 2019 Supramolecular assemblies achieve nontrivial structures but there is no general framework to link their formation to molecular properties. Here the authors propose a model that relates molecular geometry and interactions to nanoribbon formation ...
Mingming Zhang +3 more
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Gauge theory and $\mathrm G_2$-geometry on Calabi–Yau links [PDF]
Revista Matemática Iberoamericana, 2020 The 7-dimensional link K of a weighted homogeneous hypersurface on the round 9-sphere in \mathbb{C}^5 has a nontrivial null Sasakian structure which is contact Calabi–Yau, in many cases. It admits a canonical co-calibrated
Lázaro O. Rodríguez Díaz +2 more
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FEBS Letters, EarlyView.B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro +2 more
wiley +1 more source
Some aspects of topology and kinematics of a 3DOF translational parallel mechanism
International Journal of Applied Mechanics and Engineering, 2014 The paper presents elements of the topology, geometry and the kinematic analysis of a translational parallel mechanism with three degrees of freedom.
J. Bałchanowski
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Effect of Insert Angles on Cutting Tool Geometry [PDF]
Журнал інженерних наук, 2020 An analysis of publications has shown that mechanically clamped indexable inserts are predominantly used in modern tool manufacturing. Each insert has its shape and geometry in the tool coordinate system. The static system’s required geometry is achieved
Shvets S. V., Astakhov V. P.
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Geometrical enhancement of the electric field: Application of fractional calculus in nanoplasmonics
, 2011 We developed an analytical approach, for a wave propagation in metal-dielectric nanostructures in the quasi-static limit. This consideration establishes a link between fractional geometry of the nanostructure and fractional integro-differentiation.
Baskin, E., Iomin, A.
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