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"Walters, Martin"
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Shattered Music for Woodwind Quintet
Shattered Music (2023) is approximately a twenty-minute composition for woodwind quintet. This piece explores my feelings and reflections over the past ten years of composition studies at the collegiate level. I explore the woodwind quintet ensemble through texture, timbre, range, and maximizing playability. Each movement features goal-oriented music. The goals have a distinct sound because the rhythms and harmonic textures align in homophony. These sections are the building blocks to my overarching form in each movement.
Dissertation
The effects of wall inertia and axial bending on instabilities in flow through an elastic-walled tube
In certain parameter regimes, steady flow through flexible tubes is unstable to self-excited oscillations. Whittaker et al. (2010, Proc. Roy. Soc. A 466) solved an asymptotic model for the onset of self-excited oscillations in a long, thin-walled,flexible tube clamped between two rigid tubes, with a large axial tension. This work neglected effects such as wall inertia, axial bending, and in-plane shear forces. Whittaker (2015, IMA J. Appl. Math.) reintroduced in-plane shearing and found a shear-relaxation boundary layer at the tube ends. In this thesis,wall inertia and axial bending are reintroduced into these models. In Chapter 2, wall inertia terms are added to the governing equations for the wall mechanics, and a new ‘tube law’ describing the wall motion is derived. Combining this with a description of the fluid mechanics, the effect of wall inertia on the oscillations is quantified. Wall inertia is found to be a destabilising effect. In Chapters 3–7, axial bending is reintroduced allowing ‘clamped’ boundaryconditions to be satisfied at the tube ends. Three different regimes dependent on the dimensionless length and wall thickness of the tube are found. Chapters 4–5 concentrate on the two regimes where the shear layer found by Whittaker (2015) must be considered. An axial bending boundary layer that induces higher-order corrections to the shear layer and bulk solution is found in these regimes. In Chapters 6–7, a final regime is considered where the shear layer no longer needs consideration, but a new model for the wall mechanics is needed. Deriving and solving a linearised 2D model for bending a semi-infinite block under tension, corresponding to a 2D cross-section of the tube wall, a new transverse shear-relaxation layer is found. This boundary layer allows clamped boundary conditions to be satisfied and induces higher-order corrections to the bulk solution.
Dissertation
Aggressive behavior : genetic and neural approaches
Since the heyday of research on aggression in the late 1960s, developments in several varied areas had enabled us to take a new look at this important though difficult topic. Recent findings and sophisticated new techniques in behavior genetic analysis at the time had made it possible not only to enhance our understanding of the genetic mechanisms underlying aggressive behavior, but also to provide some reasonable suggestions as to the role of aggression in evolution. Originally published in 1983, there had been significant advances in genetic and neural research and a much more sophisticated and heuristic approach to the measurement and conceptualization of aggressive behavior had developed. The ten chapters in this volume provide a thorough overview of these new approaches and methodologies. There are also suggestions regarding the scope of future research on aggressive behavior, since much of what is presented describes the ongoing research activities of the contributors. This book is divided into four sections: The first provides a systematic foundation for research on aggression, and a description of some of the newer strategies for research in this area; the second concerns quantitative genetic analyses, selection data from both wild and laboratory populations, and situational determinants of aggressive behavior; the third section details new and exciting findings in neurochemical and neuropharmacological effects; and the last section contains a chapter that provides a summary and synthesis of all that has come before.
BOOK
Green China
Drawing on a wide range of Chinese and western sources, this book offers in-depth analysis of the complete range of environmental problems facing China today, from the historical, political, economic and cultural root causes, through the successful and unsuccessful efforts which have been made to find solutions, to possible future scenarios and strategies.
eBook
Steel earns silver medal as GB top table in European event
In the senior men's race Andy Vernon snatched a bronze medal in a thrilling finish, edging out Belgium's Jeroen D'Hoedt by less than a second over 10km.
Newspaper Article
LETTER: Ethnic cleansing of ducks flies in the face of nature
Hybridisation is a natural part of evolution, and naturalists should be privileged to be able to see this process in action. Instead, they seem dismayed that a \"foreign\" species is threatening a \"native\" species. In practice they don't want to lose a \"tick\", and find that the new hybrids don't match the mugshots in their field guides! Future \"twitchers\" may have to spot the ruddy white- headed duck, but so what? They certainly won't mind how it evolved, nor should they. Let us have more invaders, please, not fewer.
Newspaper Article
Letter: Swift nonsense
The slate-roofed terraced houses of Cambridge offer ideal nesting slots under the eaves.
Newspaper Article