Numerical and asymptotic solutions of generalised Burgers’ equation

The generalised Burgers’ equation has been subject to a considerable amount of research on how the equation should behave according to asymptotic analysis, however there has been limited research verifying the asymptotic analysis. In order to verify the asymptotic analysis, this paper aims to run long time and detailed numerical simulations of Burgers’ equation by employing suitable rescalings of Burgers’ equation. It is hoped that this technique will make it possible to notice subtle changes in the shock structure which would otherwise be impossible to observe. The main aim of this paper is to validate the numerical methods used in order to allow further research into shock evolution where further relaxation effects will be included

Making Ends Meet on Low Wages: The 2008 North Carolina Living Income Standard

Estimates incomes required to meet basic needs in the state by family type, region, and county compared to the federal poverty line and minimum wage. Analyzes changes in labor market conditions and suggests ways to support those who fall below the LIS

A Multiple Migration and Stacking Algorithm Designed for Land Mine Detection

This paper describes a modification to a standard migration algorithm for land mine detection with a ground-penetrating radar (GPR) system. High directivity from the antenna requires a significantly large aperture in relation to the operating wavelength, but at the frequencies of operation of GPR, this would result in a large and impractical antenna. For operator convenience, most GPR antennas are small and exhibit low directivity and a wide beamwidth. This causes the GPR image to bear little resemblance to the actual target scattering centers. Migration algorithms attempt to reduce this effect by focusing the scattered energy from the source reflector and consequentially improve the target detection rate. However, problems occur due to the varying operational conditions, which result in the migration algorithm requiring vastly different calibration parameters. In order to combat this effect, this migration scheme stacks multiple versions of the same migrated data with different velocity values, whereas some other migration schemes only use a single velocity value

Nonlinear Acoustics and an Inverse Scattering Problem

Abstract This Ph.D is concerned with wave propagation problems. The main focus is on nonlinear acoustics, looking at sonic boom propagation in a physically realistic atmosphere, whilst a secondary part will look at the problem of landmine detection and how to improve the target detection rates. The work on nonlinear acoustics emerged as a desire to model the behaviour of the sonic booms formed by supersonic aircraft in the atmosphere to see what environmental impact they would have on people and animals on the ground, in terms of the form of the sound waves once they reach the ground. The work on landmine detection originated from a Knowledge Transfer Partner- ship between the University of East Anglia (UEA) and Cobham Technical Services (CTS) organised through the Knowledge Transfer Network (KTN). This partnership took the form of a six month internship with work undertaken afterwards to publish the �ndings of the internship.

Transit, Transition Excavating J641 VUJ.

In July 2006 archaeologists from the University of Bristol and Atkins Heritage embarked on a contemporary archaeology project with a difference. We ‘excavated’ an old (1991) Ford Transit van, used by archaeologists and later by works and maintenance teams at the Ironbridge Museum. The object: to see what can be learnt from a very particular, common and characteristic type of contemporary place; to establish what archaeologists and archaeology can contribute to understanding the way society, and specifically we as archaeologists, use and inhabit these places; and to challenge and critique archaeologies of the contemporary past. In this report we describe our excavation and situate it within a wider debate about research practice in contemporary archaeology

Responding to a world of change

The BGS is proud of the central role our surveying has played in the development of geology as a science. We are equally proud of our contribution to the understanding of key issues such as the age and evolution of the Earth and life, the origin and classification of rocks, and the impact of humans on the earth system. With 175 years of dedicated surveying behind us, the UK is already better served with geological information than most other countries. However, in today’s rapidly evolving, knowledge-based economy, we must continually adapt our surveying to meet the changing needs of society

'The Technological Sublime':Combining Art and Archaeology in Documenting Change at the Former RAF Coltishall (Norfolk, UK)

Since at least the 1990s, archaeologists and artists have been documenting military installations following the withdrawal of service personnel. They have usually embarked on these recording opportunities separately, experiencing these sites as derelict, lifeless places, with stripped buildings devoid of much of their meaning after their occupants have left. Archaeologists have typically created maps and made photographs. Artists have also taken photographs, but in addition made films and created soundworks. Wherever the medium and the motivation, the assumption is usually made that only those closely familiar with the rhythms and rituals of service life can begin to understand the emptiness of what remains. And being secretive military installations, creating a record during their occupation is never an option. Uniquely, in the months leading to the closure of RAF Coltishall (Norfolk) in 2006, the RAF granted the authors unprecedented access to record the base's drawdown and closure. The project brought artists and archaeologists together to see what could be achieved in unison, while still maintaining some degree of research independence. In undertaking this survey, three related themes emerged: the role of art as heritage practice, new thinking on what constitutes landscape, and the notion of a 'technological sublime'. Following an earlier publication, we now reflect again on those themes. In doing so, we offer this collaboration between art and archaeology (traditionally considered two distinct ways of seeing and recording) as an innovative methodology for documentation, not least after the closure and abandonment of such military and industrial landscapes, where occupational communities had once lived. In this article, the words represent our ideas; the images and films are an example of the result

Another Titanic change is needed to save more lives at sea

How has our approach to saving lives at sea changed since the tragedy of the RMS Titanic in which 1,523 of the 2,228 people she was carrying died a century ago? Surprisingly, not much. Only this April the South Korean ferry Sewol capsized claiming 288 lives so far, many high school students

Heritage Itineraries and the ‘Rest State’ at Europe’s Cold War-era Ground-launched Cruise Missile (GLCM) Sites

Cold War legacies pose significant challenges for heritage management and interpretation at landscape scale. This paper explores an area where management and interpretation overlap, in terms of how postcolonial attitudes usually require something to be done with these sites. We argue that this need not be the case and that a ‘rest state’ can be an important stage in a site’s lifecycle. We focus in particular on United States Ground-launched Cruise Missile (GLCM) sites, of which six were built across Europe. All six are reminiscent of more conventional indus- trial sites co-located with their occupational communities yet they also exist as homes from home on gifted foreign soil typically occupying large areas. By examining these comparable sites at different stages of their heritage itineraries, we test the validity of some new interpretive and heritage management concepts including, if not leading towards, a rest state