Study of free-piston Stirling engine driven linear alternators

The analysis, design and operation of single phase, single slot tubular permanent magnet linear alternator is presented. Included is the no-load and on-load magnetic field investigation, permanent magnet's leakage field analysis, parameter identification, design guidelines and an optimal design of a permanent magnet linear alternator. For analysis of the magnetic field, a simplified magnetic circuit is utilized. The analysis accounts for saturation, leakage and armature reaction

High frequency losses in induction motors, part 2

The following subject areas are covered: high frequency losses in induction motors; stray losses in induction motors; and high frequency time harmonic losses in induction motors

A Mathematical Analysis of Student-Generated Sorting Algorithms

Sorting is a process we encounter very often in everyday life. Additionally it is a fundamental operation in computer science. Having been one of the first intensely studied problems in computer science, many different sorting algorithms have been developed and analyzed. Although algorithms are often taught as part of the computer science curriculum in the context of a programming language, the study of algorithms and algorithmic thinking, including the design, construction and analysis of algorithms, has pedagogical value in mathematics education. This paper will provide an introduction to computational complexity and efficiency, without the use of a programming language. It will also describe how these concepts can be incorporated into the existing high school or undergraduate mathematics curriculum through a mathematical analysis of student-generated sorting algorithms

Race Equality in Scotland : Challenges and Opportunities

This IPPI Policy Brief sets out why race equality matters in Scotland and highlights examples from which the rest of the UK could learn in the aspiration for race equality and a successful approach to citizenship. It identifies two ways through which Scotland can better improve public policy on race equality. The first is a more systematic approach to data collection on ethnic monitoring across the public sector. (Ethnic monitoring is currently common practice in some areas but entirely absent in others; a best practice approach would level this upwards). Secondly, how existing statutory commitments could be more consistently put into practice, especially in terms of the Equality Duty, by making fully operational use of existing instruments, rather than calling for new legislation

W. E. B. Du Bois, double consciousness and the ‘spirit’ of recognition

The purpose of this article is to unpick and explore Du Boisian ideas of minority consciousness and double consciousness, to elaborate why they are of value, and to situate them in relation to the Hegelian phenomenology. The article shows that while an understanding of Hegel’s master–slave dialectic is helpful in grasping how Du Bois conceives of the power held by a dominant group to afford status, Du Bois was keenly aware that no less important was the ability to invoke complicity or use coercion in denying recognition. To this end the article refuses the view that Du Bois straightforwardly adopted a Hegelian approach in a manner that minimises how this aspect of Du Bois’ work also reflected remarkable intellectual originality. The article goes on to demonstrate how Du Bois’ concept presents sociology with something of normative category that captures the dual character of unrecognised minority subjectivities and their transformative potential, alongside the conditions of impaired status that are allocated to racial minorities.</jats:p

What will happen to race equality policy on the Brexit archipelago? Multi-level governance, ‘sunk costs’ and the ‘mischief of faction’

AbstractThis article considers how one of the ‘archipelago of contradictions’ raised by Brexit is the prospect of unconventional policy change, in so far as it includes – amongst other options – ‘returning’ to prior conventions that were scaled up from the UK to the EU, and then returned to the UK through EU directives. To explore this, the paper divides UK equality legislation into three types: (a) that which was created in the UK (b) that which flows from membership of the European Union and (c) that which reflects an outgrowth of the two. The translation of this into social policy has typically taken a patchwork approach, including a discursive public function which addresses the rights of distinct groups as well as their modes of interaction. The scope and scale of existing equality approaches have therefore become central to the kinds of social and political citizenship achieved by Black and Minority Ethnic (BAME) Britons. While the dangers of Brexit rhetoric are apparent to see, we do not yet know how withdrawal from the EU revises (a), (b) or (c). The article makes a tentative attempt to shed light on these entanglements by focusing on public policies enacted to pursue race equality in particular.</jats:p