UK policy options and the South Atlantic

This is the final version of the article. Available from Universidade Federal do Rio Grande do Sul via the DOI in this record.This article assesses the utility of International Relations 'role theory' for understanding the United Kingdom's policy options in the South Atlantic, with specific reference to UK-Argentine relations. The article does not ignore the geo-strategic realities of Anglo-Argentine relations, but posits that recent interactions in the economic sphere can be seen as the beginning of a normalisation process. The cause of this economic rapprochement, it is argued, is less to do with UK policy and instead is due to changes in domestic Argentine politics which have offered a window of opportunity for the UK

Robustness: a New Form of Heredity Motivated by Dynamic Networks

We investigate a special case of hereditary property in graphs, referred to as {\em robustness}. A property (or structure) is called robust in a graph $G$ if it is inherited by all the connected spanning subgraphs of $G$. We motivate this definition using two different settings of dynamic networks. The first corresponds to networks of low dynamicity, where some links may be permanently removed so long as the network remains connected. The second corresponds to highly-dynamic networks, where communication links appear and disappear arbitrarily often, subject only to the requirement that the entities are temporally connected in a recurrent fashion ({\it i.e.} they can always reach each other through temporal paths). Each context induces a different interpretation of the notion of robustness. We start by motivating the definition and discussing the two interpretations, after what we consider the notion independently from its interpretation, taking as our focus the robustness of {\em maximal independent sets} (MIS). A graph may or may not admit a robust MIS. We characterize the set of graphs \forallMIS in which {\em all} MISs are robust. Then, we turn our attention to the graphs that {\em admit} a robust MIS (\existsMIS). This class has a more complex structure; we give a partial characterization in terms of elementary graph properties, then a complete characterization by means of a (polynomial time) decision algorithm that accepts if and only if a robust MIS exists. This algorithm can be adapted to construct such a solution if one exists

An investigation into the relationship between preceding break crops and weed populations in barley crops in organic ley/arable rotations

This report was presented at the UK Organic Research 2002 Conference. The relationship between weed populations and cereal crops following nine organic break crops was investigated in field trials in Warwickshire, Aberdeenshire and Ceredigion in 2001. Weed biodiversity was high on all sites and varied between sites in terms of species present. Severity of weed infestation differed significantly between sites and between cereals following different break crops. The impact of break crop species on the incidence and severity of the weed burden in the following cereal is discussed in relation to the field trials at the three sites

Incoherent single pion electroproduction on the deuteron with polarization effects

Incoherent pion electroproduction on the deuteron is studied from threshold up to the second resonance region with special emphasis on the influence of final state interaction, in particular on polarization observables. The elementary $\gamma N\to\pi N$ amplitude is taken from the MAID-2003 model. Final state interaction is included by considering complete rescattering in the final $NN$ and $\pi N$ subsystems. Their influence on the structure functions governing the semi-exclusive differential cross section, where besides the scattered electron only the produced pion is detected, is investigated in detail. For charged pion-production the effect of $NN$-rescattering is moderate whereas $\pi N$-rescattering is almost negligible, except very close to threshold. $NN$-rescattering appears much stronger in neutral pion production for which the primary mechanism is the elimination of a significant spurious coherent contribution in the impulse approximation. Sizeable effects are also found in some of the polarization structure functions for beam and/or target polarizations.Comment: 20 pages including 14 figure

‘Slobs and yobs’: representations of youth in the UK newspapers 1st January to 30th June 2005

Many authors have pointed to the ways in which newspapers negatively stereotype young people. This thesis aims to engage with and contribute to this debate through a contemporary discursive analysis of newspaper representations of youth, in The Guardian, The Daily Mail and The Daily Mirror during the period 1(^st) January to 30(^th) June 2005. My aim is to make explicit the discourses, both contemporary and historical, that circulated in the press during this period. It is through such discourses that young people were identified, explained and represented at this juncture. It will be argued that those young people deemed problematic by the press are represented in particular classed ways and understood through a discourse of 'underclass'; by which young people are constructed as victims of their families. Further, in 2005, as in the nineteenth- century, the poor working-class (understood as uncultured/uncivilized) are blamed for societies ills and such a discursive configuration has inevitable consequences and effects for both young people and their families