Results 41 to 50 of about 386 (180)

Observing Electrical Discharge With High 3D Spatial Resolution

High Voltage, EarlyView.
ABSTRACT This study introduces an application of binocular stereo vision technology to achieve high‐resolution 3D visualisation of submillimeter discharge channels. The proposed method can capture the depth information of weak luminous discharges and provide 3D discharge trajectories, providing new insights into the discharge mechanism.
Zhicheng Wu, Wenshuang Zhang, Zhetao Zhang, Yizhou Jiao, Le Feng, Qiaogen Zhang   +5 more
wiley   +1 more source

Computing Skinning Weights via Convex Duality

Computer Graphics Forum, EarlyView.
We present an alternate optimization method to compute bounded biharmonic skinning weights. Our method relies on a dual formulation, which can be optimized with a nonnegative linear least squares setup. Abstract We study the problem of optimising for skinning weights through the lens of convex duality.
J. Solomon, O. Stein
wiley   +1 more source

Conformal boundary conditions, loop gravity and the continuum

Journal of High Energy Physics, 2018
In this paper, we will make an attempt to clarify the relation between three-dimensional euclidean loop quantum gravity with vanishing cosmological constant and quantum field theory in the continuum.
Wolfgang Wieland
doaj   +1 more source

Scalable Computation of Topological Abstractions for Scalar Data

Computer Graphics Forum, EarlyView.
Abstract Topological data analysis has become an important tool for large scale scalar data analysis and visualization, efficiently extracting the inherent structure and features of interest of the data. However, with growing dataset sizes and complexity, it is increasingly becoming infeasible to compute topological abstractions of interest in serial ...
M. Will, J. Lukasczyk, J. Tierny, A. Gyulassy, G. H. Weber, H. Carr, C. Garth   +6 more
wiley   +1 more source

FIKA: A Conformal Geometric Algebra Approach to a Fast Inverse Kinematics Algorithm for an Anthropomorphic Robotic Arm

Machines
This paper presents a geometric approach to solve the inverse kinematics for an anthropomorphic robotic arm with seven degrees of freedom (DoF). The proposal is based on conformal geometric algebra (CGA), by which many geometric primitives can be ...
Oscar Carbajal-Espinosa, Leobardo Campos-Macías, Miriam Díaz-Rodriguez   +2 more
doaj   +1 more source

Calculation for Multidimensional Topological Relations in 3D Cadastre Based on Geometric Algebra

ISPRS International Journal of Geo-Information, 2019
Maintaining topological consistency is a crucial issue for 3D cadastral modeling as this helps to represent the cadastral boundary clearly and accurately.
Zhifeng Shi, Di Hu, Pengcheng Yin, Chun Wang, Taisheng Chen, Jiyi Zhang   +5 more
doaj   +1 more source

On Bending in the As‐Rigid‐As‐Possible Deformation Energy

Computer Graphics Forum, EarlyView.
Abstract The well‐established As‐Rigid‐As‐Possible (ARAP) energy has various forms. For surface deformation, commonly used energies contain an implicit bending penalty. We present a natural, continuous generalization that incorporates multiple ARAP versions with an implicit, user‐controllable bending penalty.
Ugo Finnendahl, Marc Alexa
wiley   +1 more source

Surface Approximation using Growing Self-Organizing Nets and Gradient Information

Applied Bionics and Biomechanics, 2007
In this paper we show how to improve the performance of two self-organizing neural networks used to approximate the shape of a 2D or 3D object by incorporating gradient information in the adaptation stage. The methods are based on the growing versions of
Jorge Rivera-Rovelo, Eduardo Bayro-Corrochano   +1 more
doaj   +1 more source

NMR Protein Structure Calculation and Sphere Intersections

Computational and Mathematical Biophysics, 2020
Nuclear Magnetic Resonance (NMR) experiments can be used to calculate 3D protein structures and geometric properties of protein molecules allow us to solve the problem iteratively using a combinatorial method, called Branch-and-Prune (BP).
Lavor Carlile, Alves Rafael, Souza Michael, José Luis Aragón   +3 more
doaj   +1 more source

Follow Me Into Math: Near‐Peer Influencers Take the Stage

School Science and Mathematics, EarlyView.
ABSTRACT Young people like to be entertained, and to entertain others. What if students were to invest enough of their time and effort into learning topics from our mathematics courses to become experts in the eyes of their peers? In this study we positioned college students and high school students as mathematical performers on the stage in front of ...
Aaron T. Wilson, Sergey Grigorian, Mayra Ortiz Galarza, Xiaohui Wang   +3 more
wiley   +1 more source