Results 11 to 20 of about 994,929 (290)
Journal of Marine Science and Engineering, 2021 In the field of parametric partial differential equations, shape optimization represents a challenging problem due to the required computational resources.
Nicola Demo +3 more
doaj +1 more source
Some flows in shape optimization [PDF]
, 2007 Geometric flows related to shape optimization problems of Bernoulli type are investigated. The evolution law is the sum of a curvature term and a nonlocal term of Hele-Shaw type.
A. Beurling +25 more
core +5 more sources
Optimal shapes of compact strings [PDF]
Nature, 2000 Optimal geometrical arrangements, such as the stacking of atoms, are of relevance in diverse disciplines. A classic problem is the determination of the optimal arrangement of spheres in three dimensions in order to achieve the highest packing fraction; only recently has it been proved that the answer for infinite systems is a face-centred-cubic lattice.
MARITAN, AMOS +3 more
openaire +4 more sources
Tạp chí Khoa học và Công nghệ, 2023 Superhydrophobic films (SHF) have recently increased in routine due to their non-wettable capacity. Superhydrophobicity can be occurred by making a micro-structural-post on materials with the surface having a low energy level.
Anh-Duc Pham
doaj +1 more source
Blade Structure Design Based on Topology Optimization and Shape Optimization
Hangkong gongcheng jinzhan, 2020 The blade cross-section design of the helicopter rotor is the basis for studying the rotor dynamics design. A two-stage optimization design method combining joint topology optimization and shape optimization is proposed, which can be used for the design ...
ZHOU Cheng, LIN Jie, LIU Yong
doaj +1 more source
Dynamic programming approach to structural optimization problem – numerical algorithm [PDF]
, 2014 In this paper a new shape optimization algorithm is presented. As a model application we consider state problems related to fluid mechanics, namely the Navier-Stokes equations for viscous incompressible fluids.
Fulmański, Piotr +2 more
core +1 more source
An active contour model for texture image segmentation using Rényi divergence measure
Mathematical Modelling and Analysis, 2022 This paper proposes an efficient method for active unsupervised texture segmentation. A new descriptor for texture features extractions based on Gaussian and mean curvature is constructed.
Sidi Yassine Idrissi
doaj +1 more source
Microgenetic optimization algorithm for optimal wavefront shaping [PDF]
Applied Optics, 2015 One of the main limitations of utilizing optimal wavefront shaping in imaging and authentication applications is the slow speed of the optimization algorithms currently being used. To address this problem we develop a micro-genetic optimization algorithm ($ $GA) for optimal wavefront shaping. We test the abilities of the $ $GA and make comparisons to
Anderson, Benjamin R. +3 more
openaire +4 more sources
On the design of membranes with increasing fundamental frequency
Revista de Matemática: Teoría y Aplicaciones, 2014 By means of a relaxation approach, we study the shape design of a stiff inclusion with given area in a membrane in order to maximize its fun- damental frequency.
Raúl B. González De Paz
doaj +1 more source
Shape Optimization Problems for Metric Graphs [PDF]
, 2013 We consider the shape optimization problem $$\min\big\{{\mathcal E}(\Gamma)\ :\ \Gamma\in{\mathcal A},\ {\mathcal H}^1(\Gamma)=l\ \big\},$$ where ${\mathcal H}^1$ is the one-dimensional Hausdorff measure and ${\mathcal A}$ is an admissible class of one ...
Buttazzo, Giuseppe +2 more
core +3 more sources