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A structured perspective of volumes on active learning
Neurocomputing, 2020Abstract We approximate the version space which covers all feasible classification hypotheses into a structured geometric hypersphere against agnostic distribution. We present a structured perspective that divides the available active learning (AL) sampling approaches into two kinds of strategies: Outer Volume Sampling and Inner Volume Sampling.
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Be the Volume: A Classroom Activity to Visualize Volume Estimation
PRIMUS, 2011Abstract A hands-on activity can help multivariable calculus students visualize surfaces and understand volume estimation. This activity can be extended to include the concepts of Fubini's Theorem and the visualization of the curves resulting from cross-sections of the surface.
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Molecular dynamics calculation of activation volumes
Phys. Chem. Chem. Phys., 2011We propose a novel approach toward calculating activation and reaction volumes based on MD simulations of reaction systems. The accuracy of the calculated volumes, verified by the comparison to the experimental data, is suitable for quantitative analysis of the experimental volumes of activations in terms of structural parameters of the corresponding ...
Elna, Deglint +5 more
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Location and volume of the active site of chymotrypsin
Biochemistry (Moscow), 2007The active site of chymotrypsin molecule (approximated by a sphere with radius of 20 A) was taken as the largest cavity on the enzyme surface. The volume inside the approximating sphere is sufficient for placement of 95% of non-hydrogen atoms of the enzyme.
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The activation volumes of reversal in ultrafine particles
IEEE Transactions on Magnetics, 1990Measurements of the activation volume of reversal and the fluctuation field of a system of ultrafine cobalt particles are reported. The measurements were performed in a range of applied fields so as to enable a comparison to be made with theoretical models which are often applied to more complex materials, such as NdFeB magnets. The values obtained for
A.M. de Witte, K. O'Grady
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Activation energy and activation volume in electrode kinetics
Electrochimica Acta, 1968Abstract A unified treatment of activation energy and activation volume is developed, based upon absolute reaction-rate theory. The treatment is generalized to include complex higher-order charge-transfer mechanisms. Rigorous equations are derived for the standard enthalpy and standard volume of activation. The common experimental quantities are then
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Surface reconstruction accuracy for active volume intersection
Pattern Recognition Letters, 1996Volume intersection algorithms reconstruct 3D objects from 2D silhouettes. Reconstruction accuracy and speed are strongly affected by the choice of the viewpoints. This paper shows that recent theoretical developments make it possible to define a surface reconstruction accuracy that only depends on the reconstructed object.
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“Phantom Activation Volumes” Are Indeed Real Activation Volumes
The Journal of Physical Chemistry A, 2002Christian F. Weber, Rudi van Eldik
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Volumes of Activation for Diffusion in Solids
The Journal of Chemical Physics, 1958Activation volumes for the following simple models of lattice defects are calculated: (a) simple vacancy in a monatomic lattice, (b) simple vacancy with elastic theory of relaxation, (c) Schottky defect in an ionic crystal with dielectric theory of relaxation, (d) surface tension model of a vacancy in a metal, (e) elastic sphere model of an ...
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Assessment of activation volume in 304L SS at high temperatures
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2022J Christopher +2 more
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