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,

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,

Effect of a magnetic flux on the critical behavior of a system with long range hopping

We study the effect of a magnetic flux in a 1D disordered wire with long range hopping. It is shown that this model is at the metal-insulator transition (MIT) for all disorder values and the spectral correlations are given by critical statistics. In the weak disorder regime a smooth transition between orthogonal and unitary symmetry is observed as the flux strength increases. By contrast, in the strong disorder regime the spectral correlations are almost flux independent. It is also conjectured that the two level correlation function for arbitrary flux is given by the dynamical density-density correlations of the Calogero-Sutherland (CS) model at finite temperature. Finally we describe the classical dynamics of the model and its relevance to quantum chaos.Comment: 5 pages, 4 figure

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 $E$ 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 $E^{-1}$, where $E$ is the driving field, and the separation, $L$, of the interfaces. For $EL \gg 1$ the velocities of the interfaces are negligible, while in the opposite limit a travelling-wave solution is found with a velocity $v \propto E/L$. For this latter case ($EL \ll 1$) 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 $(Et)^{1/2}$. 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.

Spinodal Decomposition and the Tomita Sum Rule

The scaling properties of a phase-ordering system with a conserved order parameter are studied. The theory developed leads to scaling functions satisfying certain general properties including the Tomita sum rule. The theory also gives good agreement with numerical results for the order parameter scaling function in three dimensions. The values of the associated nonequilibrium decay exponents are given by the known lower bounds.Comment: 15 pages, 6 figure

Phase Separation Kinetics in a Model with Order-Parameter Dependent Mobility

We present extensive results from 2-dimensional simulations of phase separation kinetics in a model with order-parameter dependent mobility. We find that the time-dependent structure factor exhibits dynamical scaling and the scaling function is numerically indistinguishable from that for the Cahn-Hilliard (CH) equation, even in the limit where surface diffusion is the mechanism for domain growth. This supports the view that the scaling form of the structure factor is "universal" and leads us to question the conventional wisdom that an accurate representation of the scaled structure factor for the CH equation can only be obtained from a theory which correctly models bulk diffusion.Comment: To appear in PRE, figures available on reques

Kolmogorov's refined similarity hypothesis: consequences from an exact two-point equation for isotropic turbulence

In order to describe intermittency and anomalous scaling in turbulence, Kolmogorov's second refined similarity hypothesis (KRSH) connects statistics of velocity increments to those of the rate of dissipation $\epsilon_r$, averaged in a sphere at a scale $r$ in the inertial range. We explore this classic hypothesis in light of the generalized Kolmogorov-Hill equation (GKHE) derived exactly from the Navier-Stokes equations, and in which $\epsilon_r$ appears explicitly. When evaluated using conditional averaging based on $\epsilon_r$, analysis of Direct Numerical Simulations data at various Reynolds numbers shows that the energy cascade rate indeed equals $\epsilon_r$. Conditional higher-order moments also support KRSH, while an ``inverse KRSH'' is not supported by data. Finally, results confirm KRSH even when applied separately to positive (forward) and negative (inverse) cascade regions of the flow

Evolution of speckle during spinodal decomposition

Time-dependent properties of the speckled intensity patterns created by scattering coherent radiation from materials undergoing spinodal decomposition are investigated by numerical integration of the Cahn-Hilliard-Cook equation. For binary systems which obey a local conservation law, the characteristic domain size is known to grow in time $\tau$ as $R = [B \tau]^n$ with n=1/3, where B is a constant. The intensities of individual speckles are found to be nonstationary, persistent time series. The two-time intensity covariance at wave vector ${\bf k}$ can be collapsed onto a scaling function $Cov(\delta t,\bar{t})$, where $\delta t = k^{1/n} B |\tau_2-\tau_1|$ and $\bar{t} = k^{1/n} B (\tau_1+\tau_2)/2$. Both analytically and numerically, the covariance is found to depend on $\delta t$ only through $\delta t/\bar{t}$ in the small-$\bar{t}$ limit and $\delta t/\bar{t} ^{1-n}$ in the large-$\bar{t}$ limit, consistent with a simple theory of moving interfaces that applies to any universality class described by a scalar order parameter. The speckle-intensity covariance is numerically demonstrated to be equal to the square of the two-time structure factor of the scattering material, for which an analytic scaling function is obtained for large $\bar{t}.$ In addition, the two-time, two-point order-parameter correlation function is found to scale as $C(r/(B^n\sqrt{\tau_1^{2n}+\tau_2^{2n}}),\tau_1/\tau_2)$, even for quite large distances $r$. The asymptotic power-law exponent for the autocorrelation function is found to be $\lambda \approx 4.47$, violating an upper bound conjectured by Fisher and Huse.Comment: RevTex: 11 pages + 12 figures, submitted to PR