The Times and the revolutionary crisis of 1848

The thesis seeks to examine how The Times functioned within mid-nineteenth-century British society and to suggest how the newspaper can be used to read the history of the period from the perspective of the dominant elements within it. It begins by analysing the uses made of the newspaper by historians and questions the assumptions which lie behind them. Chapters 2 and 3 assess the dominant role of The Times within the newspaper press and explore the relationship between the newspaper and its readers and their mutual perceptions. Chapter 4 analyses the structure of contemporary society and the common values which lay within, while the following chapter indicates the extent to which The Times in its treatment of the French revolution of 1848 constructed its version of reality within those values and thereby defined and defended them. Chapter 6 completes the location of the newspaper by considering the extent to which it was independent of Government, yet dependent on individual politicians. The locating of The Times within contemporary society enables its treatment of the crisis of 1848 to be critically examined in chapters 7 and 8. This reveals the extent to which events in London and Ireland were associated together and perceived as parts of a revolutionary movement which encapsulated the basic fears of the possessing classes and threatened their vital interests. In defending those interests The Times was at its most potent and 1848 demonstrated the ability of the paper to orchestrate and direct opinion on specific issues. The role of The Times and its importance are evaluated by means of the perceptions contemporaries had of events, the way they reacted to them, and the judgements subsequently made by historians. The thesis emphasizes the importance of The Times both as an agent within society and a source for the study of it

Magnetoresistance and efficiency measurements of Alq(3)-based OLEDs

Copyright 2007 by the American Physical Society. Article is available at

Quantum field theory on global anti-de Sitter space-time with Robin boundary conditions

We compute the vacuum polarization for a massless, conformally coupled scalar field on the covering space of global, four-dimensional, anti-de Sitter space-time. Since anti-de Sitter space is not globally hyperbolic, boundary conditions must be applied to the scalar field. We consider general Robin (mixed) boundary conditions for which the classical evolution of the field is well-defined and stable. The vacuum expectation value of the square of the field is not constant unless either Dirichlet or Neumann boundary conditions are applied. We also compute the thermal expectation value of the square of the field. For Dirichlet boundary conditions, both thermal and vacuum expectation values approach the same well-known limit on the space-time boundary. For all other Robin boundary conditions (including Neumann boundary conditions), the vacuum and thermal expectation values have the same limit on the space-time boundary, but this limit does not equal that in the Dirichlet case

Computer-aided communication satellite system analysis and optimization

The capabilities and limitations of the various published computer programs for fixed/broadcast communication satellite system synthesis and optimization are discussed. A satellite Telecommunication analysis and Modeling Program (STAMP) for costing and sensitivity analysis work in application of communication satellites to educational development is given. The modifications made to STAMP include: extension of the six beam capability to eight; addition of generation of multiple beams from a single reflector system with an array of feeds; an improved system costing to reflect the time value of money, growth in earth terminal population with time, and to account for various measures of system reliability; inclusion of a model for scintillation at microwave frequencies in the communication link loss model; and, an updated technological environment

An analytical model for the detection of levitated nanoparticles in optomechanics

Interferometric position detection of levitated particles is crucial for the centre-of-mass (CM) motion cooling and manipulation of levitated particles. In combination with balanced detection and feedback cooling, this system has provided picometer scale position sensitivity, zeptonewton force detection, and sub-millikelvin CM temperatures. In this article, we develop an analytical model of this detection system and compare its performance with experimental results allowing us to explain the presence of spurious frequencies in the spectra

Vacuum polarization on topological black holes with Robin boundary conditions

We compute the renormalized vacuum polarization for a massless, conformally coupled scalar field on asymptotically anti–de Sitter black hole backgrounds. Mixed (Robin) boundary conditions are applied on the spacetime boundary. We consider black holes with nonspherical event horizon topology as well as spherical event horizons. The quantum scalar field is in the Hartle-Hawking state, and we employ Euclidean methods to calculate the renormalized expectation values. Far from the black hole, we find that the vacuum polarization approaches a finite limit, which is the same for all boundary conditions except Dirichlet boundary conditions

QED effective action at finite temperature and density

The QED effective action at finite temperature and density is calculated to all orders in an external homogeneous and time-independent magnetic field in the weak coupling limit. The free energy, obtained explicitly, exhibit the expected de\ Haas -- van\ Alphen oscillations. An effective coupling at finite temperature and density is derived in a closed form and is compared with renormalization group results.Comment: 10 pages, Latex, NORDITA-93/35 P, Goteborg ITP 92-2