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The purpose of this paper is to comparatively study the conventional, i.e. single magnet, and novel hybrid-magnet switched-flux permanent-magnet (HMSFPM) machines.

The HMSFPM machines utilize two magnet types, i.e. low-cost ferrites and NdFeB. Thus, a set of magnet ratios (?), defined as the quotient of the NdFeB volume to the total PM volume, is introduced. This allows any desired performance and cost trade-off to be designed. Series- and parallel-excited magnet configurations are investigated using 2-dimensional finite element analysis.

The torque of the HMSFPM machines is lower than the NdFeB SFPM machine but the flux-weakening performance is improved for similar machine efficiency. If the machine dimensions are unconstrained, the HMSFPM machines can have the same torque for reduced material costs and a moderate increase in machine dimensions. Ferrite SFPM machines have the lowest cost for the same torque but a significant increase in machine dimensions is required. Finally, the series-excited HMSFPM machine is the preferred over the parallel-excited HMSFPM machine because it has superior demagnetization withstand capability.

Mechanical and winding eddy current losses are not considered in the efficiency map calculations.

The NdFeB SFPM, ferrite SFPM, series-excited HMSFPM, and the parallel-excited HMSFPM machines are compared for their electromagnetic performance, flux-weakening, PM demagnetization, efficiency, and material costs.

This study involves the development of a PSPICE 5.4 package oriented model for the dynamic behaviour of a series excited synchronised slip ring induction motor including the bridge rectifier for rotor circuit excitation. Furthermore, in this study is aimed at investigating the synchronising behaviour for various rotor connections of a series excited synchronous motor formed by connecting a bridge rectifier input in series with the stator winding of a slip‐ring induction motor whereas the rectifier output feeds the rotor winding. The steady state behaviour of such a scheme in comparison to a separately excited one is well known, but the behaviour during synchronisation requires further study. Presentation of results obtained by a PSPICE based simulation and comparison with experimental results acquired during this study points to a model to account for design variations and additional circuitry. It is convenient to use this model in a drive system. The advantage of this simulation method over the others is that it does not involve the utilisation of specialised programs and mathematical difficulties such as the solution of stiff differential equations. Furthermore, steady state behaviour of the scheme is explained by means of a simple analysis and illustrated by test results.

This paper aims to propose a new topology of direct current (DC) machine using claw-pole stator to replace standard DC starter in micro-hybrid vehicles. The main interest of such a topology is the reduction of copper volume.

The design of the claw-pole machine is based on a multi-objective optimization of several topologies, based on a three-dimensional (3D) reluctance network modeling. The 3D finite element (FE) model is used to check the results of the optimization, and a prototype is manufactured and tested with satisfactory results.

The claw-pole topology with wave-shape windings allows to replace the current DC series classical starter because of to its copper volume saving.

This model is only limited to the optimization of the claw-pole stator for a fixed geometry of the rotor.

The research outcome shows that claw-pole machine can replace the series-excited DC machines of starters and at the same time achieve the same performance at reduced copper volume.

The paper deals with a new DC machine topology to reduce the copper volume through the suppression of the classical stator end-windings. The use of Claw-Pole inductors ensures this copper reduction.

IN AIRCRAFT TESTING, it has been difficult to accurately determine small differential temperatures in mediums such as engine oils and aircraft fuels which may vary in temperature over several hundred degrees. A method of measuring this temperature with an electronic circuit utilising platinum probes is presented which is capable of measuring temperature differentials as low as 2.5°C. This method utilises two platinum element probes connected in series driven by a constant current generator. An electronic circuit holds the mid‐point of the probes at virtual ground minimising common mode voltages across the probes. A differential amplifier provides an output proportional to the differential temperature. The mis‐matching and non‐linearity of the platinum sensors is compensated. Voltage sensed across one probe provides an output proportional to the temperature of the medium.

It is now widely accepted that entrepreneurship is vital for sustaining economies and creating new jobs. Accordingly, the field of entrepreneurship is continuously expanding, and the global community of interest continues to grow. Indeed, academic researchers, educators and their students, as well as practitioners, policymakers and support personnel all play valuable roles in the wider entrepreneurship debate. However, despite years of concerted scholarly attention as an academic discipline in its own right, there is a sense that the field of entrepreneurship still lacks an overarching theory. Thus, much-needed new perspectives on existing theories continue to emerge, challenging established norms and generating new and exciting avenues of inquiry. The aim of the ISBE-Emerald Book Series is to facilitate such enquiry by showcasing leading edge research that reflects the themes of interest to contemporary entrepreneurship scholars. Each volume in the series is designed around a specific theme that is both relevant to the ISBE Conference and of importance to the entrepreneurship and small business community. Thus, volumes in the series draw on some of the best papers presented at the ISBE Annual Conference and also include contributions from invited external experts. While volume chapters will collectively explore and develop theory and practice in the field of entrepreneurship and small business, the emphasis of the research will be on quality, currency and relevance.

VSO (Voluntary Service Overseas) may not strike people as being part of the mainstream of Industrial and Comercial Training in the UK today. However with one foot in the UK where it recruits and trains its volunteers, and the other in the many countries overseas, its work raises many interesting questions about the use of people as a resource and the links between the human resources of the UK and those in the Third World.

High‐Production ‘Vacu‐Blast’. A new form of gun has been introduced by the manufacturers of Vacu‐Blast, specially designed to obtain an extremely high rate of millscale removal from flat plate prior to fabrication. Indeed, the manufacturers claim that millscale can be removed with the gun at a rate varying between 300 and 600 sq.ft. /hr., according to the surface to be cleaned.

Volume 17 of Research in Organizational Change and Development is unique in several ways, not the least of which is that it ushers in a new era for both our editorial team and publisher. Abraham B. (Rami) Shani will join the editorial team, and Emerald Group Publishing Limited will be our new partner in producing this series. Both are exciting changes and represent a commitment to maintaining the high quality of work that many of you have come to expect from this publication.

Since the seminal works by Granger and Joyeux (1980) and Hosking (1981), estimations of long-memory time series models have been receiving considerable attention and a number of parameter estimation procedures have been proposed. This paper gives an overview of this plethora of methodologies with special focus on likelihood-based techniques. Broadly speaking, likelihood-based techniques can be classified into the following categories: the exact maximum likelihood (ML) estimation (Sowell, 1992; Dahlhaus, 1989), ML estimates based on autoregressive approximations (Granger & Joyeux, 1980; Li & McLeod, 1986), Whittle estimates (Fox & Taqqu, 1986; Giraitis & Surgailis, 1990), Whittle estimates with autoregressive truncation (Beran, 1994a), approximate estimates based on the Durbin–Levinson algorithm (Haslett & Raftery, 1989), state-space-based maximum likelihood estimates for ARFIMA models (Chan & Palma, 1998), and estimation of stochastic volatility models (Ghysels, Harvey, & Renault, 1996; Breidt, Crato, & de Lima, 1998; Chan & Petris, 2000) among others. Given the diversified applications of these techniques in different areas, this review aims at providing a succinct survey of these methodologies as well as an overview of important related problems such as the ML estimation with missing data (Palma & Chan, 1997), influence of subsets of observations on estimates and the estimation of seasonal long-memory models (Palma & Chan, 2005). Performances and asymptotic properties of these techniques are compared and examined. Inter-connections and finite sample performances among these procedures are studied. Finally, applications to financial time series of these methodologies are discussed.

The research and the authors spotlighted in this book represent a series of recent exciting developments in the topic of business-to-business (B2B) branding. The papers in this book enhance our understanding of practice in this important facet of the marketing discipline. Furthermore, each author presents areas for future research and important managerial implications. The papers in this book cover a broad spectrum of industries and continents as well as both product and service offerings. The papers address a wide range of B2B applications including resellers, retailers, logistics service providers, subcontractors, hairdressing services, and a producer of high-tech materials. In addition, two papers address branding in B2B markets and pricing more generally. These papers provide details of the research background, methodology, analysis of each study. The topic coverage of this volume is extensive as the following list shows: (1) Building a Strong B2B Brand; (2) Building a Strong Brand to Resellers; (3) B2B Brand Equity: Theory, Measurement, and Strategy; (4) Effective Strategies for B2B Service Brands; (5) Brand Meaning and its Impact in Subcontractor Contexts; (6) Brand Image, Corporate Reputation, and Customer Value; (7) Internal Branding Theory, Research, and Practice; (8) Pricing Theory and Strategy Applications in B2B Brand Management.

Collectively these papers address most aspects of the marketing mix for B2B and industrial marketers. Each of the papers provides valuable brand management insights for managers.