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Article
Publication date: 9 May 2008

Ferrante Neri, Xavier del Toro Garcia, Giuseppe L. Cascella and Nadia Salvatore

This paper aims to propose a reliable local search algorithm having steepest descent pivot rule for computationally expensive optimization problems. In particular, an…

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Abstract

Purpose

This paper aims to propose a reliable local search algorithm having steepest descent pivot rule for computationally expensive optimization problems. In particular, an application to the design of Permanent Magnet Synchronous Motor (PMSM) drives is shown.

Design/methodology/approach

A surrogate assisted Hooke‐Jeeves algorithm (SAHJA) is proposed. The SAHJA is a local search algorithm with the structure of the Hooke‐Jeeves algorithm, which employs a local surrogate model dynamically constructed during the exploratory move at each step of the optimization process.

Findings

Several numerical experiments have been designed. These experiments are carried out both on the simulation model (off‐line) and at the actual plant (on‐line). Moreover, the off‐line experiments have been considered in non‐noisy and noisy cases. The numerical results show that use of the SAHJA leads to a saving in terms of computational cost without requiring any extra hardware components.

Originality/value

The surrogate approach in the design of electric drives is novel. In addition, implementation of the proposed surrogate model allows the algorithm not only to reduce computational cost but also to filter noise caused by the sensors and measurement devices.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 27 no. 3
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 19 June 2017

Warwick Funnell, Valerio Antonelli, Raffaele D’Alessio and Roberto Rossi

The purpose of this paper is to understand the role played by accounting in managing an early nineteenth century lunatic asylum in Palermo, Italy.

Abstract

Purpose

The purpose of this paper is to understand the role played by accounting in managing an early nineteenth century lunatic asylum in Palermo, Italy.

Design/methodology/approach

The paper is informed by Foucault’s studies of lunatic asylums and his work on governmentality which gave prominence to the role of statistics, the “science of the State”.

Findings

This paper identifies a number of roles played by accounting in the management of the lunatic asylum studied. Most importantly, information which formed the basis of accounting reports was used to describe, classify and give visibility and measurability to the “deviance” of the insane. It also legitimated the role played by lunatic asylums, as entrusted to them in post-Napoleonic early nineteenth century society, and was a tool to mediate with the public authorities to provide adequate resources for the institution to operate.

Research limitations/implications

This paper encourages accounting scholars to engage more widely with socio-historical research that will encompass organisations such as lunatic asylums.

Originality/value

This paper provides, for the first time, a case of accounting applied to a lunatic asylum from a socio-historical perspective.

Details

Accounting, Auditing & Accountability Journal, vol. 30 no. 5
Type: Research Article
ISSN: 0951-3574

Keywords

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