Results 61 to 70 of about 67,991 (292)

Addressing Integration Error for Polygonal Finite Elements Through Polynomial Projections: A Patch Test Connection [PDF]

, 2013
Polygonal finite elements generally do not pass the patch test as a result of quadrature error in the evaluation of weak form integrals. In this work, we examine the consequences of lack of polynomial consistency and show that it can lead to a ...
Paulino, Glaucio H., Talischi, Cameron
core   +1 more source

Triply‐Twinned Metamaterials: Unraveling the Mechanics and Failure Pathways Through High‐Resolution XCT

Advanced Materials, EarlyView.
Triply‐twinned architected lattices transform deformation from bending to stretching of struts, delivering up to threefold increases in stiffness and strength across polymeric and metallic systems. High‐resolution synchrotron XCT and image‐based simulations reveal how meta‐grain architecture, defects, and AM build orientation govern failure pathways ...
David McArthur, George Maddison, Jaianth Vijayakumar, Paul Tafforeau, Kathy Christofidou, Peter David Lee, PJ Tan, Chu Lun Alex Leung   +7 more
wiley   +1 more source

The Resonating-Valence-Bond Ground State of Li Nanoclusters

, 2008
We have performed Diffusion Quantum Monte Carlo simulations of Li clusters showing that Resonating-Valence-Bond (RVB) pairing correlations between electrons provide a substantial contribution to the cohesive energy.
A. Bansil, B. Barbiellini, C. Attaccalite, D. Nissenbaum, L. Spanu, N. W. Ashcroft, P. Anderson, P. Fulde   +7 more
core   +1 more source

Microwave Absorption for Detection of Dirac Fermions in SnTe Films

Advanced Materials Interfaces, EarlyView.
Microwave absorption can detect Dirac fermions in samples exposed to the atmosphere. Results showed that although topological surface states are robust against environmental degradation, they are not detectable by electrical transport measurements. Hence, microwave absorption can detect Dirac fermions even in samples whose surfaces have deteriorated ...
Wellington P. do Prado, Jorge A. Navarro‐Giraldo, Muhammad Tahsin, Vinicius T. Santana, Eduardo Abramof, Paulo H. O. Rappl, Suelen de Castro, Marcelos L. Peres, Petr Neugebauer   +8 more
wiley   +1 more source

Resolution of the Generalized Eigenvalue Problem in the Neutron Diffusion Equation Discretized by the Finite Volume Method

Abstract and Applied Analysis, 2014
Numerical methods are usually required to solve the neutron diffusion equation applied to nuclear reactors due to its heterogeneous nature. The most popular numerical techniques are the Finite Difference Method (FDM), the Coarse Mesh Finite Difference ...
Álvaro Bernal, Rafael Miró, Damián Ginestar, Gumersindo Verdú   +3 more
doaj   +1 more source

Progress in Monte Carlo calculations of Fermi systems: normal liquid 3He

, 1999
The application of the diffusion Monte Carlo method to a strongly interacting Fermi system as normal liquid $^3$He is explored. We show that the fixed-node method together with the released-node technique and a systematic method to analytically improve ...
B. L. Hammond, D. M. Ceperley, D. M. Jezek, F. Caupin, J. Boronat, J. Boronat, J. Boronat, J. C. Wheatley, J. Casulleras, J. Casulleras, J. P. Bouchaud, K. E. Schmidt, K. E. Schmidt, M. Viviani, P. E. Sokol, P. J. Reynolds, R. A. Aziz, R. A. Aziz, R. De Bruyn Ouboter, R. M. Panoff, R. P. Feynman, S. Moroni, S. Zhang   +22 more
core   +1 more source

Explicit decay heat calculation in the nodal diffusion code DYN3D [PDF]

Annals of Nuclear Energy, 2018
The residual radioactive decay heat plays an important role in some accident scenarios and, therefore, needs to be accurately calculated when performing accident analyses. The current reactor simulation codes used for accident analysis account for the residual decay heat by means of simplified models.
Bilodid, Y., Fridman, E., Kotlyar, D., Shwageraus, E.   +3 more
openaire   +2 more sources

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Alterations of White Matter Network Properties in Patients With Functional Constipation

Frontiers in Neurology, 2021
Background: The abnormalities in brain function and structure of patients with functional constipation (FC) have been identified using multiple neuroimaging studies and have confirmed the abnormal processing of visceral sensation at the level of the ...
Ma Peihong, Ma Peihong, Yin Tao, Yin Tao, He Zhaoxuan, He Zhaoxuan, Yang Sha, Yang Sha, Chen Li, Chen Li, Xie Kunnan, Xie Kunnan, Chen Jingwen, Chen Jingwen, Hou Likai, Hou Likai, Teng Yuke, Teng Yuke, Guo Yuyi, Guo Yuyi, Wang Fumin, Wang Fumin, Tian Zilei, Tian Zilei, Sun Ruirui, Sun Ruirui, Zeng Fang, Zeng Fang   +27 more
doaj   +1 more source

Size‐Modulated Mesoderm‐Endoderm Divergence and Myocardial Cavitation in Micropatterned Cardioids

Advanced Science, EarlyView.
Micropatterned cardioids, CRISPR‐engineered reporter hiPSCs, deep‐tissue imaging, and single‐cell RNA sequencing are integrated to model mesoderm‐endoderm co‐development. Heart‐foregut crosstalk promotes single large cavitation inside cardioids, resembling early heart chamber formation. ABSTRACT The human heart, originating from the splanchnic mesoderm,
Plansky Hoang, David W. McKellar, Andrew Kowalczewski, Nhu Y. Mai, Meng Chai, Xiaojun L. Lian, Yi Zheng, Jeffrey Amack, Nathan Tucker, Iwijn De Vlaminck, Huaxiao Yang, Benjamin D. Cosgrove, Zhen Ma   +12 more
wiley   +1 more source