Results 41 to 50 of about 18,366,547 (391)

DYNAMIC PARTICLE SYSTEMS FOR OBJECT STRUCTURE EXTRACTION

Image Analysis and Stereology, 2011
A new deformable model based on the use of a particle system is introduced. By defining the local behavior of each particle, the system behaves as an active contour model showing a variable topology and regularization properties.
Olivier Lavialle, Franck Angella, Christian Germain, Pierre Baylou   +3 more
doaj   +1 more source

Kaonic hydrogen and deuterium in Hamiltonian effective field theory

Physics Letters B, 2020
The anti-kaon nucleon scattering lengths resulting from a Hamiltonian effective field theory analysis of experimental data and lattice QCD studies are presented.
Zhan-Wei Liu, Jia-Jun Wu, Derek B. Leinweber, Anthony W. Thomas   +3 more
doaj   +1 more source

Spatial Structure and Coherent Motion in Dense Planetary Rings Induced by Self-Gravitational Instability [PDF]

, 1999
We investigate the formation of spatial structure in dense, self-gravitating particle systems such as Saturn's B-ring through local $N$-body simulations to clarify the intrinsic physics based on individual particle motion.
A G W Cameron, A P Hatzes, A Toomre, B A Smith, D C Richardson, D N C Lin, D Sugimoto, E Griv, F G Bridges, G W Hill, H Salo, H Salo, H Salo, H Salo, J Binney, J Lukkari, J Makino, J Makino, J P Dilley, J Wisdom, K D Supulver, K Nakazawa, K Ohtsuki, K Ohtsuki, K Ohtsuki, L Dones, L W Esposito, L W Esposito, L W Esposito, P Goldreich, P Goldreich, P Goldreich, S Araki, S Araki, S Araki, S Ida, S Ida, S Ida, W H Julian, W H Press, W K Hartmann, W R Ward   +41 more
core   +3 more sources

Particle-scale structure in frozen colloidal suspensions from small angle X-ray scattering [PDF]

, 2010
During directional solidification of the solvent in a colloidal suspension, the colloidal particles segregate from the growing solid, forming high-particle-density regions with structure on a hierarchy of length scales ranging from that of the particle ...
B. J. Berne, J. Israelachvili, J. S. Pedersen, J. S. Wettlaufer, Melissa Spannuth, P. N. Pusey, R. Klein, S. G. J. Mochrie, S. S. L. Peppin, T. Weitkamp, W. O. Roberts   +10 more
core   +2 more sources

Single-particle structure determination by X-ray free-electron lasers: Possibilities and challenges

Structural Dynamics, 2015
Single-particle structure recovery without crystals or radiation damage is a revolutionary possibility offered by X-ray free-electron lasers, but it involves formidable experimental and data-analytical challenges.
A. Hosseinizadeh, Ali Dashti, P. Schwander, R. Fung, Abbas Ourmazd   +4 more
semanticscholar   +1 more source

From cluster structures to nuclear molecules: the role of nodal structure of the single-particle wave functions

, 2018
The nodal structure of the density distributions of the single-particle states occupied in rod-shaped, hyper- and megadeformed structures of non-rotating and rotating $N\sim Z$ nuclei has been investigated in detail.
Abusara, H., Afanasjev, A. V.
core   +1 more source

Shell model in the complex energy plane and two-particle resonances [PDF]

, 2002
An implementation of the shell-model to the complex energy plane is presented. The representation used in the method consists of bound single-particle states, Gamow resonances and scattering waves on the complex energy plane.
A. Bianchini, A.A. Sonzogni, A.F.J. Siegert, A.T. Kruppa, B. Gyarmati, D.S. Delion, F. Soramel, G. Colo, G.A. Gamow, H. Esbensen, H. Feshbach, J. Raynal, L. Ferreira, L. Gr. Ixaru, L.S. Ferreira, M.V. Stoitsov, M.V. Zhukov, M.W. Herzog, N. Michel, N. Sandulescu, N. Sandulescu, O. Civitarese, P. Curutchet, R. Id Betan, R. Id Betan, R. J. Liotta, R.G. Lovas, R.J. Liotta, T. Berggren, T. Berggren, T. Vertse, T. Vertse, T. Vertse, V.I. Goldansky, V.M. Galitsky, W.J. Romo, Y.B. Zel’dovich   +36 more
core   +3 more sources

Effect of large particle content on strength and failure mode of binary granular mixture in shear under plane strain condition [PDF]

E3S Web of Conferences
The strength and failure modes of binary granular mixture composed of two different sized particles, such as gravel and sand, vary depending on the content of gravel (large particle content).
Taue Masato, Nakata Yukio, Kajiyama Shintaro   +2 more
doaj   +1 more source

Generation of LDPM structure formed by Voronoi cells

Acta Polytechnica CTU Proceedings, 2023
A preliminary study of an approach to internal structure generation used in lattice discrete particle models (LDPMs) [1]. The presented method used for particle generation and placement is intended to help realistically capture the internal structure of
Jan Vozáb, Jan Vorel
doaj   +1 more source

Spinor and Isospinor Structure of Relativistic Particle Propagators

, 1993
Representations by means of path integrals are used to find spinor and isospinor structure of relativistic particle propagators in external fields. For Dirac propagator in an external electromagnetic field all grassmannian integrations are performed and ...
Barbashov, Barducci, Batalin, Berezin, Borisov, Dmitri M. Gitman, Fainberg, Fainberg, Feynman, Feynman, Feynman, Fradkin, Fradkin, Fradkin, Fradkin, Fradkin, Fradkin, Gavrilov, Gitman, Henneaux, Korchemsky, Nikishov, Polyakov, Schwinger, Sh.M. Shvartsman, Shvartsman, Shvartsman   +26 more
core   +1 more source