Living Mesolithic Time: Narratives, Chronologies and Organic Material Culture

AbstractBritish and Irish Mesolithic studies have long been characterized by a reliance on broad-scale lithic typologies, both to provide chronologies, and in discussion of ‘cultural’ groups. More recently, traditional narrative structures—period definitions of ‘Early’ and ‘Late’, or culture typologies—have been complemented by a host of other evidence. This has included new studies of site stratigraphy, evidence for seasonality, and material culture chaîne opératoire chronologies, which place a greater emphasis on both temporal precision and the lived experiences of Mesolithic peoples. This paper will consider how the study of organic artefacts forces these narrative scales into acute focus, and presents an opportunity to explore the challenges in synthesizing different forms of data. We discuss how the evidence from sites in Ireland and Britain allows for new approaches, and highlight some of the challenges that this evidence presents, not least the perennial issue of moving from site-specific data to broader narratives. While the nature of earlier prehistoric evidence makes this an especially obvious issue for Mesolithic studies, it is one which generally besets archaeology. We suggest that in order to move beyond this in earlier prehistoric studies specifically, we need to make better use of all evidence sources, however seemingly prosaic, including antiquarian collections in museums, and chance and casual finds. Only by including the raft of available data, and recognizing its utility beyond the sum of individual apparently uninspiring parts, can we begin to move from generalizing narratives to more nuanced archaeological understandings of past material worlds

Structure variation and evolution in microphase-separated grafted diblock copolymer films

The phase behavior of grafted d-polystyrene-block-poly(methyl methacrylate) diblock copolymer films is examined, with particular focus on the effect of solvent and annealing time. It was observed that the films undergo a two-step transformation from an initially disordered state, through an ordered metastable state, to the final equilibrium configuration. It was also found that altering the solvent used to wash the films, or complete removal of the solvent prior to thermal annealing using supercritical CO2, could influence the structure of the films in the metastable state, though the final equilibrium state was unaffected. To aid in the understanding to these experimental results, a series of self-consistent field theory calculations were done on a model diblock copolymer brush containing solvent. Of the different models examined, those which contained a solvent selective for the grafted polymer block most accurately matched the observed experimental behavior. We hypothesize that the structure of the films in the metastable state results from solvent enrichment of the film near the film/substrate interface in the case of films washed with solvent or faster relaxation of the nongrafted block for supercritical CO2 treated (solvent free) films. The persistence of the metastable structures was attributed to the slow reorganization of the polymer chains in the absence of solvent

Public Archaeology: sharing best practice. Case studies from Wales

In 2013, Cadw published the 'Cadw Community Archaeology Framework'. This defined community archaeology practice in Wales, and outlined: a range of aims; a definition and context for community archaeology; a background to community archaeology; a vision for community archaeology; and a commitment to working with partners and communities. In 2018, five years after the publication of this document, the authors undertook a survey of the state of public archaeology practice in Wales in response to this document in order to identify best practice case studies, and from these to draw together, and share, consistent themes. Data collection took the form of a series of structured interviews with the Welsh Archaeological Trusts, as well as drawing on the authors' own experiences of public archaeology practice. We also include observations from our own practice at the Bryn Celli Ddu public archaeology landscape project. We aim to produce an inclusive, outward-facing series of research recommendations, designed to build on the Cadw/Welsh Government Framework in order to identify and support best practice, and to facilitate its dissemination

Public Archaeology: sharing best practice. Case studies from Wales

In 2013, Cadw published the 'Cadw Community Archaeology Framework'. This defined community archaeology practice in Wales, and outlined: a range of aims; a definition and context for community archaeology; a background to community archaeology; a vision for community archaeology; and a commitment to working with partners and communities. In 2018, five years after the publication of this document, the authors undertook a survey of the state of public archaeology practice in Wales in response to this document in order to identify best practice case studies, and from these to draw together, and share, consistent themes. Data collection took the form of a series of structured interviews with the Welsh Archaeological Trusts, as well as drawing on the authors' own experiences of public archaeology practice. We also include observations from our own practice at the Bryn Celli Ddu public archaeology landscape project. We aim to produce an inclusive, outward-facing series of research recommendations, designed to build on the Cadw/Welsh Government Framework in order to identify and support best practice, and to facilitate its dissemination

Antisocial Behaviour Orders: Unanticipated Directions in Social Network Site Development

Abstract: Social network technologies, as we know them today have become a popular feature of everyday life for many people. As their name suggests, their underlying premise is to enable people to connect with each other for a variety of purposes. These purposes however, are generally thought of in a positive fashion. Based on a multi-method study of two online environments, Habbo Hotel and Second Life, which incorporate social networking functionality, we she light on forms of what can be conceptualized as antisocial behaviours and the rationales for these. Such behaviours included: scamming, racist/homophobic attacks, sim attacks, avatar attacks, non-conformance to contextual norms, counterfeiting and unneighbourly behaviour. The rationales for sub behaviours included: profit, fun, status building, network disruption, accidental acts and prejudice. Through our analysis we are able to comment upon the difficulties of defining antisocial behaviour in such environments, particularly when such environments are subject to interpretation vis their use and expected norms. We also point to the problems we face in conducting our public and private lives given the role ICTs are playing in the convergence of these two spaces and also the convergence of ICTs themselves

The Chern-Ricci flow on complex surfaces

The Chern-Ricci flow is an evolution equation of Hermitian metrics by their Chern-Ricci form, first introduced by Gill. Building on our previous work, we investigate this flow on complex surfaces. We establish new estimates in the case of finite time non-collapsing, anologous to some known results for the Kahler-Ricci flow. This provides evidence that the Chern-Ricci flow carries out blow-downs of exceptional curves on non-minimal surfaces. We also describe explicit solutions to the Chern-Ricci flow for various non-Kahler surfaces. On Hopf surfaces and Inoue surfaces these solutions, appropriately normalized, collapse to a circle in the sense of Gromov-Hausdorff. For non-Kahler properly elliptic surfaces, our explicit solutions collapse to a Riemann surface. Finally, we define a Mabuchi energy functional for complex surfaces with vanishing first Bott-Chern class and show that it decreases along the Chern-Ricci flow.Comment: 45 page

Biogeography of cephalopods in the Southern Ocean using habitat suitability prediction models

Our understanding of how environmental change in the Southern Ocean will affect marine diversity, habitats and distribution remain limited. The habitats and distributions of Southern Ocean cephalopods are generally poorly understood, and yet such knowledge is necessary for research and conservation management purposes, as well as for assessing the potential impacts of environmental change. We used net-catch data to develop habitat suitability models for 15 of the most common cephalopods in the Southern Ocean. Using modeled habitat suitability, we assessed favorable areas for each species and examined the relationships between species distribution and environmental parameters. The results compared favorably with the known ecology of these species and with spatial patterns from diet studies of squid predators. The individual habitat suitability models were overlaid to generate a “hotspot” index of species richness, which showed higher numbers of squid species associated with various fronts of the Antarctic circumpolar current. Finally, we reviewed the overall distribution of these species and their importance in the diet of Southern Ocean predators. There is a need for further studies to explore the potential impacts of future climate change on Southern Ocean squid

Designing and evaluating the acceptability of Realshare: An online support community for teenagers and young adults with cancer

© 2014 SAGE Publications. A participatory action approach was used to design and evaluate the acceptability of the Realshare online community. Pre and post-intervention focus groups were conducted and participants were asked to test out Realshare during two intervention periods: when a facilitator was present and when one was not. Focus group data and forum messages were thematically analysed. The themes identified related to participants' website design requirements, how they used the community and the evaluation of Realshare after having used it. Amendments were made to Realshare throughout the project. Realshare is available to young oncology patients in the South West of England