89 research outputs found
Spaces of Graphs, Boundary Groupoids and the Coarse Baum-Connes Conjecture
We introduce a new variant of the coarse Baum-Connes conjecture designed to
tackle coarsely disconnected metric spaces called the boundary coarse
Baum-Connes conjecture. We prove this conjecture for many coarsely disconnected
spaces that are known to be counterexamples to the coarse Baum-Connes
conjecture. In particular, we give a geometric proof of this conjecture for
spaces of graphs that have large girth and bounded vertex degree. We then
connect the boundary conjecture to the coarse Baum-Connes conjecture using
homological methods, which allows us to exhibit all the current uniformly
discrete counterexamples to the coarse Baum-Connes conjecture in an elementary
way.Comment: 27 pages, added a new section concerned with counterexamples to the
conjectur
'It's a film' : medium specificity as textual gesture in Red road and The unloved
British cinema has long been intertwined with television. The
buzzwords of the transition to digital media, 'convergence' and
'multi-platform delivery', have particular histories in the British
context which can be grasped only through an understanding of the
cultural, historical and institutional peculiarities of the British film
and television industries. Central to this understanding must be two
comparisons: first, the relative stability of television in the duopoly
period (at its core, the licence-funded BBC) in contrast to the repeated
boom and bust of the many different financial/industrial combinations
which have comprised the film industry; and second, the cultural and
historical connotations of 'film' and 'television'. All readers of this
journal will be familiar â possibly over-familiar â with the notion that
'British cinema is alive and well and living on television'. At the end of
the first decade of the twenty-first century, when 'the end of medium
specificity' is much trumpeted, it might be useful to return to the
historical imbrication of British film and television, to explore both
the possibility that medium specificity may be more nationally specific
than much contemporary theorisation suggests, and to consider some
of the relationships between film and television manifest at a textual
level in two recent films, Red Road (2006) and The Unloved (2009)
Compact -deformation and spectral triples
We construct discrete versions of -Minkowski space related to a
certain compactness of the time coordinate. We show that these models fit into
the framework of noncommutative geometry in the sense of spectral triples. The
dynamical system of the underlying discrete groups (which include some
Baumslag--Solitar groups) is heavily used in order to construct \emph{finitely
summable} spectral triples. This allows to bypass an obstruction to
finite-summability appearing when using the common regular representation. The
dimension of these spectral triples is unrelated to the number of coordinates
defining the -deformed Minkowski spaces.Comment: 30 page
Isometric group actions on Banach spaces and representations vanishing at infinity
Our main result is that the simple Lie group acts properly
isometrically on if . To prove this, we introduce property
({\BP}_0^V), for be a Banach space: a locally compact group has
property ({\BP}_0^V) if every affine isometric action of on , such
that the linear part is a -representation of , either has a fixed point
or is metrically proper. We prove that solvable groups, connected Lie groups,
and linear algebraic groups over a local field of characteristic zero, have
property ({\BP}_0^V). As a consequence for unitary representations, we
characterize those groups in the latter classes for which the first cohomology
with respect to the left regular representation on is non-zero; and we
characterize uniform lattices in those groups for which the first -Betti
number is non-zero.Comment: 28 page
Target company cross-border effects in acquisitions into the UK
We analyse the abnormal returns to target shareholders in crossborder and domestic acquisitions of UK companies. The crossborder effect during the bid month is small (0.84%), although crossborder targets gain significantly more than domestic targets during the months surrounding the bid. We find no evidence for the level of abnormal returns in crossborder acquisitions to be associated with market access or exchange rate effects, and only limited support for an international diversification effect. However, the crossborder effect appears to be associated with significant payment effects, and there is no significant residual crossborder effect once various bid characteristics are controlled for
Strategic positioning:an integrated decision process for manufacturers
Purpose â This paper describes research that has sought to create a formal and rational process that guides manufacturers through the strategic positioning decision. Design/methodology/approach â The methodology is based on a series of case studies to develop and test the decision process. Findings â A decision process that leads the practitioner through an analytical process to decide which manufacturing activities they should carryout themselves. Practical implications â Strategic positioning is concerned with choosing those production related activities that an organisations should carry out internally, and those that should be external and under the ownership and control of suppliers, partners, distributors and customers. Originality/value â This concept extends traditional decision paradigms, such as those associated with âmake versus buyâ and âoutsourcingâ, by looking at the interactions between manufacturing operations and the wider supply chain networks associated with the organisation
Urban myths: popular culture, the city and identity
This article uses Manchester (England) as a case study to examine some relationships between the city and the popular culture that emerges from, or seeks to represent, this city. We focus on post-war popular culture that has been widely disseminated such as film, television and popular music. The article considers whether these examples of popular culture reflect wider urban, social and cultural change and discuss what impact this popular culture has had on changing the landscape and fortunes of the city. In particular, we discuss the case study of Manchester's popular culture in terms of ideas about place-based identities and social class. We consider popular culture in terms of de-industrialising Manchester through to regenerated Manchester. The paper concludes by discussing the possibility that the city centre of Manchester has become gentrified and considers the impact that this is having on popular culture
Socio-Economic Deprivation, Culture and Extremism in Britain
The July 7/7 suicide attacks on the United Kingdom (UK) were highly significant in that they were perpetrated by four 2nd and 3rd generation British citizens from Yorkshire. The event shocked both the Government and public, and forced British policymakers to reassess the nature of both integration and the welfare society at large. The purpose of this thesis is to gain a better understanding into the root causes of home-grown extremism in the UK, and to assess whether or not socio-economic deprivation, and/or culture encourage/s such extremism. Through the utilization of both statistical and cultural analyses, this thesis asserts that the roots of home-grown extremism in the UK are linked both with socio-economic deprivation and with the cultural tenets of segregated British communities. Furthermore, this thesis asserts that such extremism is thus more likely to occur in Britain\u27s most deprived regions, and that both the economic status and political behaviors of segregated British communities are heavily influenced by culture
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