Interpretation of coronal synoptic observations

Three-dimensional reconstruction techniques used to determine coronal density distributions from synoptic data are complicated and time consuming to employ. Current techniques also assume time invariant structures and thus mix both temporal and spatial variations present in the coronal data. The observed distribution of polarized brightness, pB, and brightness, B, of coronal features observed either at eclipses or with coronagraphs depends upon both the three-dimensional distribution of electron density within the structure and the location of the feature with respect to the plane-of-the-sky. By theoretically studying the signature of various coronal structures as they would appear during a limb transit, it is possible to recognize these patterns in real synoptic data as well as estimate temporal evolutionary effects

Entanglement Manipulation and Concentration

We introduce a simple, experimentally realisable, entanglement manipulation protocol for exploring mixed state entanglement. We show that for both non-maximally entangled pure, and mixed polarisation-entangled two qubit states, an increase in the degree of entanglement and purity, which we define as concentration, is achievable.Comment: Accepted as Rapid Communication PR

The Management of High Seas Fisheries

A new and acute management problem, now the focus of a major U.N. conference, has arisen in recent years in international fisheries. The problem concerns the management of transboundary fishery resources, in the form of resources to be found in both the coastal state EEZ and the adjacent high seas. The resources are commonly referred to as "straddling" stocks. This article provides a preliminary exploration of the management issue. It reviews the historical and legal background and asks how far the now well developed economic analysis of the management of transboundary fishery resources in the form of resources "shared" by two or more coastal states will take us in examining this second and more recent transboundary fishery management problem. The answer is a very limited distance only. The article concludes by pointing to questions arising from this resource management issue demanding further research.Transboundary fishery resources, straddling stocks, theory of dynamic games, Environmental Economics and Policy, Public Economics,

CLIMATE AND COOPERATION: A NEW PERSPECTIVE ON THE MANAGEMENT OF SHARED FISH STOCKS

Climate regime shifts occur at irregular intervals and have profound and persistent impacts on ocean temperature and circulation patterns and on the dynamics of marine fish populations. Despite a growing scientific literature and some attention to the implications of such regime shifts for domestic fisheries, the issue has received little attention in the context of international fishery management. This paper presents evidence for the significance of climatic regime shifts, and draws upon the recent history of conflict between Canada and the United States over Pacific salmon management to illustrate the dangers that unpredicted, unanticipated environmental regime shifts pose for efforts to maintain international cooperation. This suggests a need for greater attention to this issue. Fishery agreements can be made more resilient to the impacts of such environmental changes by explicitly building in flexibility — for example, by allowing the use of side payments. In addition, pre-agreements on procedures to be followed in the event of sustained changes in fish stock productivity or migration patterns, and cooperation on developing common scientific understandings, can help to prevent destructive conflicts. Finally, the literature employing game theoretic shared-fishery models could be further developed to focus on providing practical guidance for maintaining cooperation in the presence of unpredictable and persistent environmental changes.climate regimes, shared fisheries, potential conflicts, uncertainty, Q21, Q22, Resource /Energy Economics and Policy,

Irreversible Investment and Optimal Fisheries Management: A Stochastic Analysis

In recent years, attention has been devoted to fishery management problems that arise because capital embodied in fishing fleets is often nonmalleable. having few if any alternative uses. This problem of irreversible investment was analyzed by Clark et al. (1979), using a deterministic model. In reality, however, most investment decisions must be made within an uncertain environment. This paper describes recent efforts to account for uncertainty in analyzing the problem of optimal fishery investment, where the uncertainty is caused by stochastic variability in the resource stock from year to year.Environmental Economics and Policy, International Development, Resource /Energy Economics and Policy, Risk and Uncertainty,

Co-creating film education: moments of divergence and convergence on Queen Margaret University’s Introduction to Film Education course

This case study reflects on the first iteration of a new course in film education, titled Introduction to Film Education, which ran for the first time at Queen Margaret University in Scotland in 2021. It considers the upskilling of both teachers and film education practitioners in film education, while reflecting upon the co-creation of a film education curriculum through the course’s collaborative, peer-driven nature. Finally, it wonders whether any settled film education curriculum is possible, or even desirable

Children's Databases - Safety and Privacy

This report describes in detail the policy background, the systems that are being built, the problems with them, and the legal situation in the UK. An appendix looks at Europe, and examines in particular detail how France and Germany have dealt with these issues. Our report concludes with three suggested regulatory action strategies for the Commissioner: one minimal strategy in which he tackles only the clear breaches of the law, one moderate strategy in which he seeks to educate departments and agencies and guide them towards best practice, and finally a vigorous option in which he would seek to bring UK data protection practice in these areas more in line with normal practice in Europe, and indeed with our obligations under European law