13,354 research outputs found
Increasing Protection of GIS at the WTO: Clawbacks, Greenfields and Monopoly Rents
Currently there are proposals and negotiations regarding the strengthening of protection for geographic indicators (GIs) in the WTO. A major proponent of stronger protection for GIs has been the European Union. One of the arguments it has put forward for stronger protection has been that it will provide an avenue for economic development for agricultural producers in developing countries – a way to capture rents in the markets of developed countries. This paper first outlines the proposed changes to the international protection of geographic indicators. Second, the potential for groups of producers to generate and capture rents in foreign markets is assessed under differing assumptions pertaining to industry structure, product differentiation in the short and long run, barriers to entry reputation and the form of legal protection in importing countries. A discussion of the resource requirements to establish and maintain a GI is also provided.Agricultural and Food Policy, International Development, International Relations/Trade, WTO, GIS,
Gas/liquid flow behaviours in a downward section of large diameter vertical serpentine pipes
An experimental study on air/water flow behaviours in a 101.6 mm i.d. vertical pipe with a serpentine configuration is presented. The experiments are conducted for superficial gas and liquid velocities ranging from 0.15 to 30 m/s and 0.07 to 1.5 m/s, respectively. The bend effects on the flow behaviours are significantly reduced when the flow reaches an axial distance of 30 pipe diameters or more from the upstream bend. The mean film thickness data from this study has been used to compare with the predicted data using several falling film correlations and theoretical models. It was observed that the large pipe data exhibits different tendencies and this manifests in the difference in slope when the dimensionless film thickness is plotted as a power law function of the liquid film Reynolds number
Interfacial shear in adiabatic downward gas/liquid co-current annular flow in pipes
Interfacial friction is one of the key variables for predicting annular two-phase flow behaviours in vertical pipes. In order to develop an improved correlation for interfacial friction factor in downward co-current annular flow, the pressure gradient, film thickness and film velocity data were generated from experiments carried out on Cranfield University’s Serpent Rig, an air/water two-phase vertical flow loop of 101.6 mm internal diameter. The air and water superficial velocity ranges used are 1.42–28.87 and 0.1–1.0 m/s respectively. These correspond to Reynolds number values of 8400–187,000 and 11,000–113,000 respectively. The correlation takes into account the effect of pipe diameter by using the interfacial shear data together with dimensionless liquid film thicknesses related to different pipe sizes ranging from 10 to 101.6 mm, including those from published sources by numerous investigators. It is shown that the predictions of this new correlation outperform those from previously reported studies
Post-Moratorium EU Regulation of Generically Modified Products: Trade Concerns
EU, GMO, trade, Agribusiness, Agricultural and Food Policy, Food Consumption/Nutrition/Food Safety, International Relations/Trade,
Post-Moratorium EU Regulation of Genetically Modified Products: Trade Concerns
Trade in genetically modified (GM) products remains a major issue in agricultural trade policy. In particular, the European Union has sought to deny market access to GM-products. In the wake of a WTO case brought by Canada and the US, among others, against an import ban imposed on genetically modified agricultural products by the European Union (EU) – which the EU lost – the import ban was dropped and the EU put in place a new regulatory regime for GM-products. The EU suggests that the post-moratorium regulatory regime is compliant with its WTO obligations. As of June 2011, the operation of this new import regime has not been formally assessed. The first GM-crops are just now working their way through the post-moratorium regulatory system and an assessment of the operation of the regime is timely. The results of this assessment suggest that the EU’s approval system is only partially based in science and thus is not in conformity with its SPS obligations under the WTO. Hence, the new EU regulatory regime could be challenged through a WTO Disputes panel.EU regulatory regime, Genetically Modified (GM) products, Science, SPS, Agribusiness, Agricultural and Food Policy, Food Consumption/Nutrition/Food Safety, International Relations/Trade,
Post-Moratorium EU Regulation of Genetically Modified Products: Triffid Flax
The regulatory regime for contamination permits the imposition of import bans with neither a scientific justification nor a risk assessment. No scientific assessment of Triffid flax was done prior to the import ban. The import regime put in place to deal with the contamination of flax with the GM-flax CDC Triffid provides no rationale for the thresholds of safety established for the testing regime. The EU is consistently pushing for commercial, economic and social considerations to be included, along with science, in decision-making. Such considerations are often perceived as avenues for economic protection to creep into EU decision-making. Such considerations can, however, cut both ways. The Canada-EU testing regime for Triffid makes provision for, but does not necessarily require, the testing of cargoes when they reach European ports (Western Producer, 2010). The risks associated with inspection upon arrival made exports to Europe too risky. By only requiring the passing of the tests prior to product leaving Canada, flexibility to find alternative markets for contaminated cargoes has been gained. Thus, while costly, the testing regime for flax exports to the EU has allowed for the resumption of Canadian flax exports to the EU. Of course, the import Protocol negotiated between the EU and Canada was a one off. In a future case, economic and commercial considerations could be used to bolster economic protection. This is why science was agreed upon as the arbitrator of SPS-based trade barriers by the Member States of the WTO, including the EU. Thus, the EU regulatory regime for GM-products would seem open to a new challenge at the WTO. Of course, the political consequences of such a challenge would have to be carefully weighed.GMO, food, EU, Triffid Flax, Agribusiness, Agricultural and Food Policy, Food Consumption/Nutrition/Food Safety, International Relations/Trade,
Coarsening Dynamics of a One-Dimensional Driven Cahn-Hilliard System
We study the one-dimensional Cahn-Hilliard equation with an additional
driving term representing, say, the effect of gravity. We find that the driving
field has an asymmetric effect on the solution for a single stationary
domain wall (or `kink'), the direction of the field determining whether the
analytic solutions found by Leung [J.Stat.Phys.{\bf 61}, 345 (1990)] are
unique. The dynamics of a kink-antikink pair (`bubble') is then studied. The
behaviour of a bubble is dependent on the relative sizes of a characteristic
length scale , where is the driving field, and the separation, ,
of the interfaces. For the velocities of the interfaces are
negligible, while in the opposite limit a travelling-wave solution is found
with a velocity . For this latter case () a set of
reduced equations, describing the evolution of the domain lengths, is obtained
for a system with a large number of interfaces, and implies a characteristic
length scale growing as . Numerical results for the domain-size
distribution and structure factor confirm this behavior, and show that the
system exhibits dynamical scaling from very early times.Comment: 20 pages, revtex, 10 figures, submitted to Phys. Rev.
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