Results 41 to 50 of about 82,902 (182)

Research on the Deep Learning Technology in the Hull Form Optimization Problem

open access: yesJournal of Marine Science and Engineering, 2022
A high−accuracy objective function evaluation method is crucial in ship hull form optimization. This study proposes a novel approximate ship hull form optimization framework using the deep learning technology, deep belief network algorithm. To illustrate
Shenglong Zhang
doaj   +1 more source

VIRTUE : integrating CFD ship design [PDF]

open access: yes, 2006
Novel ship concepts, increasing size and speed, and strong competition in the global maritime market require that a ship's hydrodynamic performance be studied at the highest level of sophistication. All hydrodynamic aspects need to be considered so as to
DMEM, University of Strathclyde, UK   +8 more
core  

LensPerfect: Gravitational Lens Massmap Reconstructions Yielding Exact Reproduction of All Multiple Images

open access: yes, 2008
We present a new approach to gravitational lens massmap reconstruction. Our massmap solutions perfectly reproduce the positions, fluxes, and shears of all multiple images.
B. Frye   +10 more
core   +1 more source

Effect of Hull Forms on Ship Motions and Optimization of Hull Forms for Seakeeping Performance

open access: yesJournal of the Society of Naval Architects of Japan, 1989
It is of importance to design a ship which has a good seakeeping performance in her sea-lane. It is, however, hard to say that an optimization of the hull form for seakeeping performance has been sufficiently carried out from the seakeeping point of view at the initial design stage of a merchant ship so far, because it has been difficult to make clear ...
openaire   +2 more sources

Hull Form Optimization Based on From Parameter Design

open access: yesJournal of the Society of Naval Architects of Korea, 2009
Abstract Hull form generation and variation methods to be mainly discuss ed in this study are based on the fairness optimized B-Spline form parameter curves (FOBFC). These curves can be used both as indirect modification function for variatio n and as geometric entities for hull form generation.
Yeon-Seung Lee, Young-Bok Choi
openaire   +2 more sources

Automatic Optimal Design Method for Minimum Total Resistance Hull Based on Enhanced FFD Method

open access: yesBrodogradnja
Hull optimization plays a crucial role in enhancing ship performance and efficiency. This study aimed to improve ship performance, particularly by reducing total resistance, through automated optimization methods.
Shuhui Guo   +4 more
doaj   +1 more source

Modification of ship hull form using a developed cylindrical optimization model for hydrodynamic performance assessment [PDF]

open access: yesInternational Journal of Fluid Engineering
The design and optimization of ship hull forms play a crucial role in enhancing the performance and efficiency of marine vessels. This study focuses on integrating a cylindrical central body part within a conventional ship hull to explore its impact on ...
Anietie Effiong Udo   +2 more
doaj   +1 more source

Border bases and order ideals: a polyhedral characterization

open access: yes, 2015
Border bases arise as a canonical generalization of Gr\"obner bases. We provide a polyhedral characterization of all order ideals (and hence border bases) that are supported by a zero-dimensional ideal: order ideals that support a border basis correspond
Braun, Gábor, Pokutta, Sebastian
core   +1 more source

Achieving Drag Reduction with Hullform Improvement in Different Optimizing Methods

open access: yesInternational Journal of Technology, 2020
In general, evaluation of ship hydrodynamic efficiency could be produced by an energy-efficient and concentrated cost function. An optimization method with the representation of hull geometry is one of the preliminary design steps that are most ...
Wiwin Sulistyawati, Purwo Joko Suranto
doaj   +1 more source

Two-Term Disjunctions on the Second-Order Cone

open access: yes, 2014
Balas introduced disjunctive cuts in the 1970s for mixed-integer linear programs. Several recent papers have attempted to extend this work to mixed-integer conic programs.
Kilinc-Karzan, Fatma, Yildiz, Sercan
core   +1 more source

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