The intent of this chapter is to examine the historical and present-day intersections of injury, impairment, pain and risk-taking in the Paralympic Movement. While much has been…
Abstract
Purpose
The intent of this chapter is to examine the historical and present-day intersections of injury, impairment, pain and risk-taking in the Paralympic Movement. While much has been written about injuries that end an athlete’s career, far less consideration has been given to how an injury might launch a sports career. In this chapter, I explore the experiences of athletes for whom injury and sports participation are fundamentally entwined.
Approach
To accomplish this, I draw on sociological literature on sport and injury, psychological literature on identities and sport retirement and feminist disability theories. The discussion is further enriched by interviews with Paralympic athletes and informed by own experience as a researcher, guide and volunteer in the Paralympic Movement.
Findings
This work illustrates how systems of representation intersect to (re)produce identities. This includes demonstrating how some individuals use sport as a means of claiming an athletic identity while distancing themselves from devalued disabled identities and the subsequent impact this can have on their psycho-social well-being.
Implications
This chapter demonstrates how sociologists of sports can engage with critical disability scholarship to deepen understandings of how and why individuals with impairments enter into sport and their experiences therein.
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Fractional slot permanent magnet (PM) brushless machines having concentrated non‐overlapping windings have been the subject of research over last few years. They have already been…
Abstract
Purpose
Fractional slot permanent magnet (PM) brushless machines having concentrated non‐overlapping windings have been the subject of research over last few years. They have already been employed in the commercial hybrid electric vehicles (HEVs) due to high‐torque density, high efficiency, low‐torque ripple, good flux‐weakening and fault‐tolerance performance. The purpose of this paper is to overview recent development and research challenges in such machines in terms of various structural and design features for electric vehicle (EV)/HEV applications.
Design/methodology/approach
In the paper, fractional slot PM brushless machines are overviewed according to the following main and sub‐topics: first, machine topologies: slot and pole number combinations, all and alternate teeth wound (double‐ and single‐layer windings), unequal tooth structure, modular stator, interior magnet rotor; second, machine parameters and control performance: winding inductances, flux‐weakening capability, fault‐tolerant performance; and third, parasitic effects: cogging torque, iron loss, rotor eddy current loss, unbalanced magnetic force, acoustic noise and vibration.
Findings
Many fractional slot PM machine topologies exist. Owing to rich mmf harmonics, fractional slot PM brushless machines exhibit relatively high rotor eddy current loss, potentially high unbalanced magnetic force and acoustic noise and vibration, while the reluctance torque component is relatively low or even negligible when an interior PM rotor is employed.
Originality/value
This is the first overview paper which systematically reviews the recent development and research challenges in fractional‐slot PM machines. It summarizes their various structural and design features for EV/HEV applications.
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N A Al‐Anani and Jewell D GW Howe
Due to their high magnetizing field requirement, the emergence of rare‐earth based permanent magnets is creating onerous demands on the capacitor‐discharge systems which are used…
Abstract
Due to their high magnetizing field requirement, the emergence of rare‐earth based permanent magnets is creating onerous demands on the capacitor‐discharge systems which are used for their initial magnetization, a process which is aggravated by the fact that the transient current pulse induces eddy currents, which inhibit the penetration of the magnetizing field, and causes heating and stressing of the magnetizing fixture. The problems are compounded in multi‐pole and post‐assembly magnetization systems, particularly for fine pole‐pitch fields. However this paper concentrates on the pre‐magnetization of magnets in air‐cored solenoids, which, despite the difficulty in subsequently handling magnetized magnets, remains the most common requirement. It presents a methodology for the design of impulse magnetizing solenoids to produce the amplitude and time to peak of magnetizing field required for a specific generic type and aspect ratio of magnet to be magnetized, and describes a procedure for the subsequent analysis of the complete impulse magnetization system.
This chapter honors the opportunity I have had to learn with David Maines over the past 35 years. I connect my research on communication and disability, specifically among…
Abstract
This chapter honors the opportunity I have had to learn with David Maines over the past 35 years. I connect my research on communication and disability, specifically among individuals who are blind and visually impaired, to Maines' discussion of narratives incorporating Rawlins' exploration of similarity and difference. I discuss narratives of disability as difference using three examples: A short story written by H. G. Wells; the American with Disabilities Act; and interviews conducted with elite blind goalball athletes. I conclude with 10 lessons learned about disability and difference including that the goal of my research is to help us all perceive disability as a difference that matters, but not as a difference that disables.
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Lyndsay M.C. Hayhurst, Holly Thorpe and Megan Chawansky
Often overlooked in discussions related to how to ensure accessible and affordable high-quality early childhood education is the heavy burden that has been carried by the early…
Abstract
Often overlooked in discussions related to how to ensure accessible and affordable high-quality early childhood education is the heavy burden that has been carried by the early childhood workforce; the data reveal a level of exploitation of this workforce that must be considered and addressed. This chapter will focus attention on the economic realities of the early childhood workforce as a key element to achieve equitable access to affordable high-quality early childhood services.
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For much of its 43-year history, the community college sector in Jamaica has been plagued by perceptions of inferior status and mediocre tertiary education offerings. The Jamaican…
Abstract
For much of its 43-year history, the community college sector in Jamaica has been plagued by perceptions of inferior status and mediocre tertiary education offerings. The Jamaican colleges have responded to the criticisms by aggressively pursuing quality assurance initiatives such as program accreditation, expanded course offerings, and ongoing curriculum review. This chapter traces the birth and development of the community college movement in Jamaica and the Caribbean and acknowledges the significant achievement of the Jamaican colleges in increasing access to tertiary education. The chapter also examines threats to the open access policy that may have serious implications for education equity and quality. These include inadequate funding, limited infrastructure to support the curriculum, low enrolment of specialized groups, and unsatisfactory completion and graduation rates. Recommendations for policy and practice are proposed.
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Although several papers have been published on the calculation of the open‐circuit airgap field of permanent magnet excited radial‐field motors, most analytical models are framed…
Abstract
Although several papers have been published on the calculation of the open‐circuit airgap field of permanent magnet excited radial‐field motors, most analytical models are framed in rectangular coordinates and few account for the effect of stator slotting.
Meifang Xiang and Sarah Hinchliffe
Using data from a mid-west public university, this study examines the determinants of students’ repeating the first college-level accounting course. More than 600 students are…
Abstract
Using data from a mid-west public university, this study examines the determinants of students’ repeating the first college-level accounting course. More than 600 students are included in the study. The results show that three factors (cumulative college grade point average, intention to major in accounting, and students’ motivation and determination) are significant in explaining students’ repeating of the course. The study provides evidence that the repeating students are more likely to be the students with prior high school accounting education. The study identifies that repeating is not due to a student failing the course but rather that repeating is more likely to be an individual decision when the student is not satisfied with the grade he/she gets, either because he/she self-screens out of business school, or decides to repeat the course to stay in their business major. Finally, the study shows that there is little evidence of grade improvement when a student repeats the first college-level accounting course.