30,873 research outputs found
Evidence for a Critical Behavior in Pure Compact QED
We present evidence about a critical behavior of compact QED (CQED) pure
gauge theory. Regularizing the theory on lattices homotopic to a sphere, we
present evidence for a critical, i.e. second order like behavior at the
deconfinement phase transition for certain values of the coupling parameter
.Comment: 3 pages, 3 figures, POSTSCRIPT file (127KB uuencoded
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Hormone-treated beef: Should Britain accept it after Brexit?
This Briefing explains why the use of synthetic, industrially-manufactured hormones in beef production,
and the threat of importing hormone-produced beef after Brexit, matter for UK consumers. There is robust scientific evidence showing that meat produced using one key hormone (17ÎČ-oestradiol) increases the cancer risk to consumers, while for the rest the available evidence is insufficient to show that their use is acceptably safe. The Briefing outlines the basis of the scientific and policy disputes over the use of supplementary hormones in beef cattle production. It shows that, although the USA is most associated with hormone-reared beef, other countries that want to export their beef to the UK, post Brexit, either allow hormones to be used, or are suspected of doing so. The EU has been reasonably vigilant on consumersâ behalf on this issue, and it has robust scientific grounds for its ban on their use.
The risk from beef hormones is one of many issues on which UK consumers have benefited from the EUâs measures to protect public and environmental health. Chlorine-washed chicken is another example
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Weakening UK food law enforcement: a risky tactic in Brexit
The UK Food Standards Agency (FSA) is beginning to roll out a far-reaching programme of regulatory change called Regulating Our Future (ROF). This Briefing Paper argues that ROF risks:
- Making the UKâs food supply less safe by further weakening systems that are already too weak;
- Undermining the ability of UK food producers to export to the EU after Brexit;
- Creating irreconcilable conflicts of interests, because rather than having public officials inspect food businesses, the food businesses will be able to choose who âmarks their homeworkâ.
Professors Erik Millstone (University of Sussex) and Tim Lang (City, University of London) provide a detailed and powerful critique of the Food Standards Agencyâs proposals. They conclude that ROF represents a fundamental and detrimental shift in the role, approach and public responsibilities of the FSA and the local authority officers who are the bedrock of food safety in the UK. They also show why these unwelcome proposals are especially unwise in the context of negotiations over Brexit, when the public needs a strong, vigilant and effective FSA.
The authors call for ROF to be halted pending further review by a special Parliamentary Joint Select Committee of the Health and Environment, Food & Rural Affairs Committees
Summary of the functions and capabilities of the structural analysis and matrix interpretive system computer program
Functions and capabilities of large capacity structural analysis and matrix interpretive system digital computer program to analyze frame and shell structure
Operations analysis (study 2.1). Program SEPSIM (solar electric propulsion stage simulation)
Program SEPSIM is a FORTRAN program which performs deployment, servicing, and retrieval missions to synchronous equatorial orbit using a space tug with a continuous low thrust upper stage known as a solar electric propulsion stage (SEPS). The SEPS ferries payloads back and forth between an intermediate orbit and synchronous orbit, and performs the necessary servicing maneuvers in synchronous orbit. The tug carries payloads between the orbiter and the intermediate orbit, deploys fully fueled SEPS vehicles, and retrieves exhausted SEPS vehicles when, and if, required. The program is presently contained in subroutine form in the Logistical On-orbit VEhicle Servicing (LOVES) Program, but can also be run independently with the addition of a simple driver program
Summary of the functions and capabilities of the structural analysis system computer program
Functions and operations of structural analysis system computer progra
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Joined-up food policy? The trials of governance, public policy and the food system
To address the policy malfunctions of the recent past and present, UK food policy needs to link policy areas that in the past have been dealt with in a disparate manner, and to draw on a new ecological public health approach. This will need a shift within the dominant trade liberalizationânational economic competitiveness paradigm that currently informs UK food policy, and the international levels of the EU and the WTO trade rules, and grants the large corporate players in the food system a favoured place at the policyâmaking tables. The contradictions of the food system have wrought crises that have engendered widespread institutional change at all levels of governance. Recent institutional reforms to UK food policy, such as the FSA and DEFRA, reflect a bounded approach to policy integration. Initiatives seeking a more integrated approach to food policy problems, such as the Social Exclusion Unitâs access to shops report, and the Policy Commission on the Future of Food and Farming, can end up confined to a particular policy sector framed by particular interestsâa process of âpolicy confinementâ. However, the UK can learn from the experience of Norway and Finland who have found their own routes to a more joinedâup approach to public health and a sustainable food supply by, for example, introducing a national food policy council to provide integrated policy advice. Also, at the local and community levels in the UK, policy alternatives are being advanced in an ad hoc fashion by local food initiatives. More structuralâlevel interventions at the regional and local governance levels are also needed to address the social dimensions of a sustainable food suppl
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