SETTING PUBLIC SERVICE PRIORITIES FOLLOWING SUCCESSFUL TAX AND SPENDING LIMITING INITIATIVES

Public Economics,

Warm Inflation with a General Form of the Dissipative Coefficient

We propose and investigate a general form of the dissipative coefficient $\Gamma=C_{\phi}T^{m}/\phi^{m-1}$ in warm inflation. We focus on discussing the strong dissipative processes $r=\Gamma/3H\gg1$ in the thermal state of approximate equilibrium. To this toy model, we give the slow-roll conditions, the amplitude and the index of the power spectrum under the general form of dissipative coefficient. Furthermore, the monomial potential and the hybrid-like potential are analyzed specifically. We conclude that the $m=0,3$ cases are worthy further investigation especially.Comment: 24 pages, no figures, to be published on JCA

Inductive benchmarking for purely functional data structures

Every designer of a new data structure wants to know how well it performs in comparison with others. But finding, coding and testing applications as benchmarks can be tedious and time-consuming. Besides, how a benchmark uses a data structure may considerably affect its apparent efficiency, so the choice of applications may bias the results. We address these problems by developing a tool for inductive benchmarking. This tool, Auburn, can generate benchmarks across a wide distribution of uses. We precisely define 'the use of a data structure', upon which we build the core algorithms of Auburn: how to generate a benchmark from a description of use, and how to extract a description of use from an application. We then apply inductive classification techniques to obtain decision trees for the choice between competing data structures. We test Auburn by benchmarking several implementations of three common data structures: queues, random-access lists and heaps. These and other results show Auburn to be a useful and accurate tool, but they also reveal some limitations of the approach

Effect of slotted casing treatment on performance of a multistage compressor

A J85-13 engine was equipped with a compressor case that allowed changes to the case wall over the rotor tips of six of its eight stages. The engine was tested with four inlet configurations: uniform inlet flow, 180 degree circumferential distortion, hub radial distortion, and tip radial distortion. Slotted inserts were installed in the first three stages, and the compressor was mapped under similar conditions. Overall compressor performance obtained with tip treatment was inferior to the performance for the compressor's normal operating range. Pumping capacity with the slotted inserts was reduced. Overall compressor efficiency was reduced 1 to 2 percent with the slotted rings installed for 90 and 100 percent corrected engine speeds

(Con)textual identities: British women’s autobiographical accounts of travel, India and the 1857 Mutiny

This dissertation analyses autobiographical writings by twelve British women who resided in India during the 1857 Mutiny: Katherine Bartrum, Charlotte Canning, Adelaide Case, Ruth Coopland, Caroline Dickson, Frances Duberly, Maria Germon, Georgina Harris, Julia Inglis, Matilda Ouvry, Georgina Paget and Harriet Tytler. The study contends that through exposure to travel, settlement and war, the writers use diaries, journals, letters and memoirs as a framework to construct (con)textual identities: textual personas that are strongly marked by context. By scrutinising two elements: self and place, the discussion determines that voyages, relocation and war induce a textual restructuring of the self that reflects a conflict between remaining womanly whilst simultaneously appearing new and exceptional. By denying the weaker parts of female identity, elevating the status of existing female functions and assuming unwomanly roles the writers challenge the boundaries of mid-Victorian femininity. Chapter One examines the origins of the writings and interrogates the relationship between the sea-voyage and identity, asserting that travel triggers the commencement of new personas. Chapter Two discusses settlement in India, revealing that physical displacement evokes a modification of gendered and national identity. Chapter Three argues that the beginning of war generates paradoxical portrayals of the self, from fearful victim to heroic participant. Chapter Four determines that the main months of the Mutiny prompt the ultimate textual collapse of conventional womanly functions, through the advent of masculine and militaristic personalities. Chapter five examines the aftermath of the rebellion. It contends that post-war personas reveal a multitude of anxieties and that publication provides one final challenging context. Ultimately, the dissertation contends that travel, India and the Mutiny provide new contexts for twelve women to interrogate the parameters of feminine identity in autobiographical personas that as a result of their transient nature are (con)textual identities

Monopole Black Hole Skyrmions

Charged black hole solutions with pion hair are discussed. These can be used to study monopole black hole catalysis of proton decay. There also exist multi- black hole skyrmion solutions with BPS monopole behavior.Comment: 16 pages including 6 figure

Dynamo models and differential rotation in late-type rapidly rotating stars

Increasing evidence is becoming available about not only the surface differential rotation of rapidly rotating cool stars but, in a small number of cases, also about temporal variations, which possibly are analogous to the solar torsional oscillations. Given the present difficulties in resolving the precise nature of such variations, due to both the short length and poor resolution of the available data, theoretical input is vital to help assess the modes of behaviour that might be expected, and will facilitate interpretation of the observations. Here we take a first step in this direction by studying the variations in the convection zones of such stars, using a two dimensional axisymmetric mean field dynamo model operating in a spherical shell in which the only nonlinearity is the action of the azimuthal component of the Lorentz force of the dynamo generated magnetic field on the stellar angular velocity. We consider three families of models with different depths of dynamo-active regions. For moderately supercritical dynamo numbers we find torsional oscillations that penetrate all the way down to the bottom of the convection zones, similar to the case of the Sun. For larger dynamo numbers we find fragmentation in some cases and sometimes there are other dynamical modes of behaviour, including quasi-periodicity and chaos. We find that the largest deviations in the angular velocity distribution caused by the Lorentz force are of the order of few percent, implying that the original assumed `background' rotation field is not strongly distorted.Comment: Astronomy and Astrophysics, in pres