89 research outputs found

    Comments on Noncommutative ADHM Construction

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    We extend the method of matrix partition to obtain explicitly the gauge field for noncommutative ADHM construction in some general cases. As an application of this method we apply it to the U(2) 2-instanton and get explicit result for the gauge fields in the coincident instanton limit. We also easily apply it to the noncommutative 't Hooft instantons in the appendix.Comment: 17 pages, LaTeX; an appendix added, typos corrected, refs adde

    The specific surface area and chemical composition of diamond dust near Barrow, Alaska

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95687/1/jgrd17349.pd

    Fishing in a congested sea: What do marine protected areas imply for the future of the Maltese artisanal fleet?

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    Inshore artisanal fishing in Malta is under intense spatial competition as the coastal zone is fragmented by multiple uses and designations including maritime transport, infrastructure, industrial fisheries, aquaculture, tourism and recreation. This research, adopting a grounded visualization methodology, explains how the artisanal fishing sector has undergone and been affected by ‘spatial squeezing’. Our results show that artisanal fishermen have been forced to give up fishing grounds or co-exist with other uses to the point where the ability to fish is becoming increasingly challenging. These difficulties might escalate with the advent of the marine protected areas (MPAs) which encompass nearly half of the inshore fishing zones. Since there does not seem to be effective MPA consultation mechanisms that elicit the real social, cultural and economic value of artisanal fishing grounds, fishermen feel threatened, alienated and disempowered. This study urges for a more holistic approach to spatial marine planning and accentuates the need of realizing the dependency of the artisanal sector on the inshore zones in the implementation of conservation measures, such that the prolonged existence of the coastal fishing communities is not jeopardized

    The critical institutional analysis and development (CIAD) framework

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    In recent years, ‘critical institutionalism’ has emerged as a school of thought in its own right. Among its strengths is a focus on institutions as both complex and embedded, where institutional change is understood as a process of bricolage. Yet a number of distinct challenges follow from this. These include capturing the ‘complex-embeddedness’ of institutions; making critical institutionalism amendable to the world of policy; investigating the more hidden, informal, and everyday dimensions of institutional life; and providing explanations of commons governance that foreground the workings of power and meaning. In this paper, I provide an outline of the Critical Institutional Analysis and Development (CIAD) Framework, designed to explicitly reflect the basic tenets and core claims of critical institutionalism. Whilst it shares similarities with its predecessors – the IAD Framework (Ostrom 1990, 2005) and ‘politicised’ IAD Framework (Clement 2010) – the modifications it has undergone results in a qualitatively different framework geared toward critical institutional research. The paper considers ways in which the CIAD Framework facilitates systematic and critical analyses of commons governance whilst addressing key challenges a critical institutional approach engenders

    Guidelines for management of ischaemic stroke and transient ischaemic attack 2008

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    This article represents the update of the European Stroke Initiative Recommendations for Stroke Management. These guidelines cover both ischaemic stroke and transient ischaemic attacks, which are now considered to be a single entity. The article covers referral and emergency management, Stroke Unit service, diagnostics, primary and secondary prevention, general stroke treatment, specific treatment including acute management, management of complications, and rehabilitation
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