Trade dispute settlement mechanisms: the WTO dispute settlement understanding in the wake of the GATT

A critical feature of the GATT Uruguay Round negotiations was the establishment of a new and more effective system of dealing with international trade disputes, known as the WTO Dispute Settlement Understanding (DSU). The original GATT dispute settlement system comprised rudimentary remnants of a more thorough framework contained in the defunct Havana Charter of the International Trade Organization (ITO). By the time of the start of the Uruguay Round negotiations in Punta del Este in 1986, the effectiveness and credibility of the GATT dispute settlement system was being very seriously questioned. The primary reason for the increasing lack of confidence in the system was the propensity of GATT contracting countries to ignore the findings of Panels, resulting in a stalemate in a number of high profile trade disputes. Several trade disputes between the EU and the United States discussed were initiated under the GATT dispute settlement system but remained unresolved. These disputes became increasingly acrimonious as a direct consequence of the failure of the GATT system to enforce a satisfactory resolution. This paper provides an outline of the workings of the GATT and WTO dispute settlement systems underlie several recent trade disputes. The first two sections deal with the GATT system of settling trade disputes. The first details the key elements of the GATT dispute settlement system while the second considers its performance in resolving disputes. Section 3 outlines the origins of the WTO DSU and summarises its principal Articles. The WTO DSU is appraised on the basis of its first nine years of operation in Section 4 followed by a brief discussion of the key issues that have arisen from its operation. The final Section makes some concluding comments on the relative efficacy of the GATT and WTO dispute settlement systems.

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The XMM-Newton EPIC Background and the production of Background Blank Sky Event Files

We describe in detail the nature of XMM-Newton EPIC background and its various complex components, summarising the new findings of the XMM-Newton EPIC background working group, and provide XMM-Newton background blank sky event files for use in the data analysis of diffuse and extended sources. Blank sky event file data sets are produced from the stacking of data, taken from 189 observations resulting from the Second XMM-Newton Serendipitous Source Catalogue (2XMMp) reprocessing. The data underwent several filtering steps, using a revised and improved method over previous work, which we describe in detail. We investigate several properties of the final blank sky data sets. The user is directed to the location of the final data sets. There is a final data set for each EPIC instrument-filter-mode combination.Comment: Paper accepted by A&A 22 December 2006. 14 pages, 8 figures. Paper can also be found at http://www.star.le.ac.uk/~jac48/publications

Latitude and longitude vertical disparities

The literature on vertical disparity is complicated by the fact that several different definitions of the term “vertical disparity” are in common use, often without a clear statement about which is intended or a widespread appreciation of the properties of the different definitions. Here, we examine two definitions of retinal vertical disparity: elevation-latitude and elevation-longitude disparities. Near the fixation point, these definitions become equivalent, but in general, they have quite different dependences on object distance and binocular eye posture, which have not previously been spelt out. We present analytical approximations for each type of vertical disparity, valid for more general conditions than previous derivations in the literature: we do not restrict ourselves to objects near the fixation point or near the plane of regard, and we allow for non-zero torsion, cyclovergence, and vertical misalignments of the eyes. We use these expressions to derive estimates of the latitude and longitude vertical disparities expected at each point in the visual field, averaged over all natural viewing. Finally, we present analytical expressions showing how binocular eye position—gaze direction, convergence, torsion, cyclovergence, and vertical misalignment—can be derived from the vertical disparity field and its derivatives at the fovea