نتایج جستجو برای: optimisation

تعداد نتایج: 20717  

Journal: :Environmental Modelling and Software 2011
Dragan A. Savic Josef Bicik Mark Morley

Water management practice has benefited from the development of model-driven Decision Support Systems (DSS), and in particular those that combine simulation with single or multiple-objective optimisation tools. However, there are many performance, acceptance and adoption problems with these decision support tools caused mainly by misunderstandings between the communities of system developers an...

Journal: :Journal of Marine Science and Engineering 2021

We present a novel convex optimisation model for ship speed profile under varying environmental conditions, with fixed schedule the journey. To demonstrate efficacy of proposed method, combined was developed that employed an existing dynamic programming approach, along model. The tested 5 different ships 20 journeys from Houston, Texas to London Gateway, differing which were retrieved actual we...

2007
C Henrik Westerberg John Levine

This paper presents an extension of an evolutionary approach to classical plan optimisation to metric plan optimisation. With the advent of the third International Planning Competition (IPC), optimisation for fully automated planners is no longer solely an issue of optimising over the number of actions in a plan. The problem is more complicated and interesting as optimisation can be done in rel...

2014
Jia-Ming Kok Javaan Chahl

An optimisation method using both global and local optimisation is implemented to determine the flapping profile which will produce the most lift for an experimental wing-actuation system. The optimisation method is tested using a numerical quasi-steady analysis. Results of an optimised flapping profile show a 20% increase in lift generated as compared to flapping profiles obtained by high spee...

2013
M. TAMER AYVAZ ALPER ELÇI

The aim of this study is to present a linked simulation–optimisation model to estimate the groundwater recharge rates, their associated zone structures, and hydraulic conductivity values for regional, steady-state groundwater flow models. For the zone structure estimation problem the fuzzy c-means clustering (FCM) method was used. The association of zone structures with the spatial distribution...

Journal: :Electronic Colloquium on Computational Complexity (ECCC) 2003
Till Tantau

This paper introduces logspace optimisation problems as analogues of the well-studied polynomial-time optimisation problems. Similarly to them, logspace optimisation problems can have vastly different approximation properties, even though the underlying existence and budget problems have the same computational complexity. Numerous natural problems are presented that exhibit such a varying compl...

2002
Dragan Savic

In many optimisation problems, analysts are often confronted with multiobjective decision problems. The most common purpose of an analysis is to choose the best trade-offs among all the defined and conflicting objectives. However, many optimisation studies are formulated as a problem whose goal is to find the “best” solution, which corresponds to the minimum or maximum value of a single objecti...

Journal: :Optics express 2002
Walter Lubeigt Gareth Valentine John Girkin Erwin Bente David Burns

A 37 element adaptive optic mirror has been used intracavity to control the oscillation mode profile of a diode-laser pumped Nd:YVO4 laser. Mode and power optimisation are demonstrated by closed loop automatic optimisation of the deformable mirror.

2002
Simon J. Cox Richard P. Boardman Liming Chen Mihai C. Duta M. Hakki Eres Matt J. Fairman Zhuoan Jiao Michael B. Giles Carole A. Goble Graeme E. Pound Andy J. Keane Mark Scott Nigel Shadbolt Feng Tao Jasmin L. Wason Gang Xue

We are developing a Grid Enabled Optimisation and Design Search system (GEODISE). It offers grid-based access to a state-of-the-art collection of optimisation and design search tools, industrial strength analysis codes, and distributed computing and data resources.

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