Results 31 to 40 of about 82,902 (182)

Multi-plan optimization design of high-speed hull form fusion special type bulbous bow

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] To meet the functional requirements of a special purpose ship,large bulbous bow should be installed at the fore-body as the carrier of special equipment.
LU Chao   +3 more
doaj   +1 more source

Deep-reinforcement-learning-based hull form optimization method for stealth submarine design

open access: yesInternational Journal of Naval Architecture and Ocean Engineering
The stealth performance of submarines is closely related to their hull forms. In this study, an optimization method based on Deep Reinforcement Learning (DRL) was developed to design submarine hull forms, aimed at maximizing the stealth performance.
Sang-Jae Yeo   +2 more
doaj   +1 more source

A cross-entropy algorithm based on Quasi-Monte Carlo estimation and its application in hull form optimization

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2021
Simulation-based hull form optimization is a typical HEB (high-dimensional, expensive computationally, black-box) problem. Conventional optimization algorithms easily fall into the “curse of dimensionality” when dealing with HEB problems.
Xin Liu   +4 more
doaj   +1 more source

The Edgeworth Conjecture with Small Coalitions and Approximate Equilibria in Large Economies [PDF]

open access: yes, 2019
We revisit the connection between bargaining and equilibrium in exchange economies, and study its algorithmic implications. We consider bargaining outcomes to be allocations that cannot be blocked (i.e., profitably re-traded) by coalitions of small size ...
Barman, Siddharth, Echenique, Federico
core   +2 more sources

Lines optimization of river cruise ship based on numerical simulation of resistance and self-propulsion

open access: yesZhongguo Jianchuan Yanjiu
ObjectivesBased on the numerical simulation of resistance and self-propulsion, the lines optimization of an inland river cruise ship is carried out with resistance and delivered power as the optimization objectives.
Baoguo CHENG   +3 more
doaj   +1 more source

Hybrid Evolutionary Shape Manipulation for Efficient Hull Form Design Optimisation [PDF]

open access: yes, 2016
‘Eco-friendly shipping’ and fuel efficiency are gaining much attention in the maritime industry due to increasingly stringent environmental regulations and volatile fuel prices.
Goh, Cindy, Hock, Joo, Li, Yun
core  

Geometric combinatorics and computational molecular biology: branching polytopes for RNA sequences

open access: yes, 2016
Questions in computational molecular biology generate various discrete optimization problems, such as DNA sequence alignment and RNA secondary structure prediction.
Drellich, Elizabeth   +5 more
core   +1 more source

On the Oß-hull of a planar point set [PDF]

open access: yes, 2018
© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/We study the Oß-hull of a planar point set, a generalization of the Orthogonal Convex Hull where the coordinate axes form
Alegría Galicia, Carlos   +3 more
core   +2 more sources

RESEARCH ON HULL-FORM OPTIMIZATION OF A PASSENGER SHIP USING HULL-FORM MODIFICATION ALGORITHM WITH GAUSSIAN DISTRIBUTION FUNCTION

open access: yesBrodogradnja, 2016
The present study proposes an automatic hull form control algorithm to effectively control the hull form of a ship. A Gaussian distribution function is implemented in the proposed algorithm that automatically controls the hull form in conjunction with an
Hee-Jong Choi, Hyun-Sik Yoon
doaj  

Hierarchical space reduction method based on self-organizing maps and K-means clustering for hull form optimization

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveDue to its high-dimensional, computationally expensive, and 'black-box' characteristics, hull form optimization based on CFD usually leads to low efficiency and poor quality.
Qun YU   +5 more
doaj   +1 more source

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