Results 101 to 110 of about 2,395,394 (337)
Supersolid formation in a quantum gas breaking a continuous translational symmetry [PDF]
Nature, 2016 The concept of a supersolid state combines the crystallization of a many-body system with dissipationless flow of the atoms from which it is built.
J. Léonard +4 more
semanticscholar +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Background Tumor segmentation is crucial for lung disease diagnosis and treatment. Most existing deep learning‐based automatic segmentation methods rely on manually annotated data for network training. Purpose This study aims to develop an unsupervised tumor segmentation network smic‐GAN by using a similarity‐driven generative adversarial ...
Chengyijue Fang +2 more
wiley +1 more source
Conservation Laws for a Variable Coefficient Variant Boussinesq System
Abstract and Applied Analysis, 2014 We construct the conservation laws for a variable coefficient variant Boussinesq system, which is a third-order system of two partial differential equations. This system does not have a Lagrangian and so we transform it to a system of fourth-order, which
Ben Muatjetjeja, Chaudry Masood Khalique
doaj +1 more source
, 2013 The exact classical solution of the equation of the motion for the Nambu-Goldstone fermion of the nonlinear representation of supersymmetry and its physical significance are discussed, which gives a new insight into the chiral symmetry of the standard ...
Okano, Takeshi +2 more
core
Quantitative quality control of 3D water tank using image analysis
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Background and objective Accurate beam data acquisition using three‐dimensional (3D) water tanks is essential for beam commissioning and quality control (QC) in clinical radiation therapy. This study introduces a novel method for quantitative QC of the system, utilizing MV images and webcam videos.
Yuki Tanimoto +9 more
wiley +1 more source
Journal of Applied Mathematics, 2012 We study two coupled systems of nonlinear partial differential equations, namely, generalized Boussinesq-Burgers equations and (2+1)-dimensional Davey-Stewartson equations.
Isaiah Elvis Mhlanga +1 more
doaj +1 more source
Symmetry, Symmetry Breaking and Topology [PDF]
Symmetry, 2010 The ground state of a system with symmetry can be described by a group G. This symmetry group G can be discrete or continuous. Thus for a crystal G is a finite group while for the vacuum state of a grand unified theory G is a continuous Lie group. The ground state symmetry described by G can change spontaneously from G to one of its subgroups H as the ...
openaire +1 more source
Pediatric, adult, and late onset multiple sclerosis: Cognitive phenotypes and gray matter atrophy
Annals of Clinical and Translational Neurology, Volume 12, Issue 3, Page 512-522, March 2025.Abstract Objectives We aim to investigate cognitive phenotype distribution and MRI correlates across pediatric‐, elderly‐, and adult‐onset MS patients as a function of disease duration. Methods In this cross‐sectional study, we enrolled 1262 MS patients and 238 healthy controls, with neurological and cognitive assessments.
Ermelinda De Meo +23 more
wiley +1 more source
Advances in Mathematical Physics, 2014 We analyze the (3+1)-dimensional Boussinesq equation, which has applications in fluid mechanics. We find exact solutions of the (3+1)-dimensional Boussinesq equation by utilizing the Lie symmetry method along with the simplest equation method.
Letlhogonolo Daddy Moleleki +1 more
doaj +1 more source