ESTIMATING THE INCIDENCE OF FOODBORNE SALMONELLA AND THE EFFECTIVENESS OF ALTERNATIVE CONTROL MEASURES

Foodborne illness incidence, Salmonella, Delphi method, United Kingdom, Food Consumption/Nutrition/Food Safety,

A Strategic Perspective on the Impact of Food Safety Standards on Developing Countries

This paper explores the competing concepts of 'standards as barriers' and standards as catalysts' in the context of food safety standards in international trade in agricultural and food products. It is suggested that food safety standards can act as both a barrier to trade and the basis of competitive positioning for developing countries in international markets. This suggests that the application of a strategic framework to analyze and assess alternative responses to evolving food safety standards can throw some light on the circumstances under which standards act to prohibit trade or, alternatively, create competitive trade opportunities. The use of such a framework is illustrated through a brief case study of fish and fishery product exports from Kenya and India.Agriculture, Food, Trade, Food Safety, Standards, Technical barriers to Trade, Food Consumption/Nutrition/Food Safety, Q18, K32, F13,

POLICY OPTIONS FOR OPEN BORDERS IN RELATION TO ANIMAL AND PLANT PROTECTION AND FOOD SAFETY

Agricultural and Food Policy, Food Consumption/Nutrition/Food Safety, International Relations/Trade,

Discreteness without symmetry breaking: a theorem

This paper concerns sprinklings into Minkowski space (Poisson processes). It proves that there exists no equivariant measurable map from sprinklings to spacetime directions (even locally). Therefore, if a discrete structure is associated to a sprinkling in an intrinsic manner, then the structure will not pick out a preferred frame, locally or globally. This implies that the discreteness of a sprinkled causal set will not give rise to ``Lorentz breaking'' effects like modified dispersion relations. Another consequence is that there is no way to associate a finite-valency graph to a sprinkling consistently with Lorentz invariance.Comment: 7 pages, laTe

Discreteness and the transmission of light from distant sources

We model the classical transmission of a massless scalar field from a source to a detector on a background causal set. The predictions do not differ significantly from those of the continuum. Thus, introducing an intrinsic inexactitude to lengths and durations - or more specifically, replacing the Lorentzian manifold with an underlying discrete structure - need not disrupt the usual dynamics of propagation.Comment: 16 pages, 1 figure. Version 2: reference adde

QUANTIFYING THE IMPACT OF ECONOMIC INCENTIVES ON FIRMS' FOOD SAFETY RESPONSIVENESS: THE CASE OF RED MEAT AND POULTRY PROCESSING SECTOR IN CANADA

This study assesses quantitatively the economic incentives for firms to adopt food safety controls and the potential impact of a number of firm and market-specific characteristics on this behavior, focusing on the red meat and poultry-processing sector in Canada.food safety controls, economic incentives, adoption, food processing sectors in Canada, Food Consumption/Nutrition/Food Safety,

Gravity and Matter in Causal Set Theory

The goal of this paper is to propose an approach to the formulation of dynamics for causal sets and coupled matter fields. We start from the continuum version of the action for a Klein-Gordon field coupled to gravity, and rewrite it first using quantities that have a direct correspondent in the case of a causal set, namely volumes, causal relations, and timelike lengths, as variables to describe the geometry. In this step, the local Lagrangian density $L(f;x)$ for a set of fields $f$ is recast into a quasilocal expression $L_0(f;p,q)$ that depends on pairs of causally related points $p \prec q$ and is a function of the values of $f$ in the Alexandrov set defined by those points, and whose limit as $p$ and $q$ approach a common point $x$ is $L(f;x)$. We then describe how to discretize $L_0(f;p,q)$, and use it to define a discrete action.Comment: 13 pages, no figures; In version 2, friendlier results than in version 1 are obtained following much shorter derivation