The macroseismic survey of the 27 February 2008 Market Rasen earthquake

Immediately following the occurrence of the Market Rasen earthquake on 27 February 2008 (5.2 ML, 4.5 Mw), an online questionnaire was opened on the BGS web site to collect felt reports. In addition, questionnaire data were collected automatically by USGS as part of the “Did You Feel It?” (DYFI) programme (Wald et al. 1999), and also by EMSC as part of its European monitoring. Some additional data were also gathered by agencies on the fringe of the felt area, notably ROB in Brussels, and DIAS in Dublin. This report summarises the findings

The lattice of submodules of a multiplicity free module

In this paper we determine, under some mild restrictions, the lattice of submodules \gL of a module $M$ all of whose composition factors have multiplicity one. Such a lattice is distributive, and hence determined by its poset of down-sets $P$. We define a directed Ext graph \Ext_\gL of \gL and show that if \Ext_\gL is acyclic, then \Ext_\gL determines $P$. The result applies to multiplicity free indecomposable modules for finite dimensional algebras with acyclic Ext graph. It also applies to some deformed Verma modules which arise in the Jantzen sum formula basic classical simple Lie superalgebras in the deformed case

Recasting the home-work relationship: a case of mutual adjustment?

Advances in communication and information technologies, changing managerial strategies and changing cultural expectations about the location of (paid) work, have meant that paid work is increasingly conducted from home. Home then becomes the place where the discourse of industrial production meets with the discourse of household production. We analyse the relationship between these two traditionally separate discourses, which, through the disintegration of the time/space compression, increasingly come to bear on each other. We report on the experiences of home-workers and their families coping with the co-presence of the sometimes conflicting and sometimes competing demands and values embedded in such discourses. In doing so, we contribute to current understandings of the complexities inherent in emergent forms of organization, as the relationship between work and home is recast. Theoretically and methodologically, this empirical study is located within a discursive framework, and we emphasize the usefulness of such approaches to studying organizational realities

Interpreting intraplate tectonics for seismic hazard : a UK historical perspective

It is notoriously difficult to construct seismic source models for probabilistic seismic hazard assessment in intraplate areas on the basis of geological information, and many practitioners have given up the task in favour of purely seismicity-based models. This risks losing potentially valuable information in regions where the earthquake catalogue is short compared to the seismic cycle. It is interesting to survey how attitudes to this issue have evolved over the past 30 years. This paper takes the UK as an example, and traces the evolution of seismic source models through generations of hazard studies. It is found that in the UK, while the earliest studies did not consider regional tectonics in any way, there has been a gradual evolution towards more tectonically based models. Experience in other countries, of course, may differ