We present a constrained shape optimisation problem solved via metaheuristic stochastic techniques. Genetic Algorithms are briefly reviewed and their adaptation to surface topography optimisation is studied. An application to flow optimisation issues is presented.

The backtesting and optimisation of trading strategies has emerged as an interesting research and experimental problem in both finance and Information Technology (IT) fields. However, it is a non-trivial task to effectively and efficiently optimise trading strategies, not to mention the optimisation in the real-world situations. This paper discusses the application of evolutionary technologies ...

All optimisation algorithms have parameters that affect their performance and reliability. Usually the default values of these parameters are problem-dependent. Regardless of this fact it is common practice to use some default values that are provided with the optimisation algorithm. Finding the optimal values of these parameters is a computationally expensive optimisation problem also known as...

Design optimisation of electrical machines, in particular permanent magnet synchronous disc motors, is very important, but quite a complicated problem. A reasonably simplified form of the design procedure may be attacked by various approaches accumulated into two main topics; classical optimisation techniques (deterministic methods) or genetic algorithms (stochastic methods). Genetic algorithm ...

The paper proposes a design procedure for the creation of a robust and effective hybrid algorithm, tailored to and capable of carrying out a given design optimisation task. In the course of algorithm creation, a small set of simple optimisation methods is chosen, out of which those performing best will constitute the hybrid algorithm. The simplicity of the method allows implementing ad-hoc modi...

Better prediction of electromagnetic compatibility (EMC) for components is becoming a topical demand, due to technology improvements. It is requested by integrated circuit (IC) manufacturers as well as by equipment integrators. The French UTE standardisation group has proposed an EMC modelling methodology for ICs, called ICEM (Integrated Circuit Electromagnetic Model). This proposal improves an...

A new mechanical filter structure is presented which comprises two silicon cantilevers mechanically coupled by a silicon linkage with thin film piezoelectric transducers providing electrical input and output signals. The resonance behaviour of such a structure results in a bandpass filter response, having a band-width determined by the frequency separation between the closely spaced in-phase an...

Our aim is to realise an agent-based Grid simulator for studying "Grid Query Optimisation Strategies", as partially described in [SSS+01]. The purposes of this document are the following: • To identify some HEP use cases and, based on these use cases and requirements, to identify some user-level and Grid-level query optimisation opportunities. • To define an architecture for the simulator, in w...

The basic feature of the optimisation-based clearance approach is to reformulate the clearance problems as equivalent minimum distance problems for which ”anti”-optimisation is performed to determine the worst-case parameter combination/flight condition leading to worst performance. The basic requirements for the applicability of the optimisation-based approach are the availability of suitable ...