36 research outputs found
From Navas to Kaltoft: The European Court of Justice’s evolving definition of disability and the implications for HIV-positive individuals
This article will examine the definition of disability developed by the European Court of Justice for the purposes of the Employment Equality Directive and examine whether it is sufficient for the purpose of bringing People Living with HIV/AIDS within its scope. The article will argue that in order to adequately protect People Living with HIV/AIDS within the EU from discrimination, the European Court of Justice needs to ensure that a coherent EU wide definition of disability, based fully upon the social model of disability, is adopted. This is necessary in order to ensure adequate protection not only for People Living with HIV/AIDS but for all individuals with disabilities from discrimination throughout the EU. In addition to this central argument, this paper will argue that the lack of a coherent definition of disability grounded in the social model fragments protection for People Living with HIV/AIDS across the EU leading to a number of possible unintended consequences
Free-space coupling and characterization of transverse bulk phonon modes in a quantum acoustic device
Transverse bulk phonons in a multimode integrated quantum acoustic device are
excited and characterized via their free-space coupling to a three-dimensional
(3D) microwave cavity. These bulk acoustic modes are defined by the geometry of
the Y-cut lithium niobate substrate in which they reside and couple to the
cavity electric field via a large dipole antenna, with an interaction strength
on the order of the cavity line-width. Using finite element modeling (FEM) we
determine that the bulk phonons excited by the cavity field have a transverse
polarization with a shear velocity matching previously reported values. We
demonstrate how the coupling between these transverse acoustic modes and the
electric field of the 3D cavity depends on the relative orientation of the
device dipole, with a coupling persisting to room temperature. Our study
demonstrates the versatility of 3D microwave cavities for mediating
contact-less coupling to quantum, and classical, piezoacoustic devices.Comment: 5 pages, 4 figure
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Low Level Waste Conceptual Design Adaption to Poor Geological Conditions
Since the early eighties, several studies have been carried out in Belgium with respect to a repository for the final disposal of low-level radioactive waste (LLW). In 1998, the Belgian Government decided to restrict future investigations to the four existing nuclear sites in Belgium or sites that might show interest. So far, only two existing nuclear sites have been thoroughly investigated from a geological and hydrogeological point of view. These sites are located in the North-East (Mol-Dessel) and in the mid part (Fleurus-Farciennes) of the country. Both sites have the disadvantage of presenting poor geological and hydrogeological conditions, which are rather unfavorable to accommodate a surface disposal facility for LLW. The underground of the Mol-Dessel site consists of neogene sand layers of about 180 m thick which cover a 100 meters thick clay layer. These neogene sands contain, at 20 m depth, a thin clayey layer. The groundwater level is quite close to the surface (0-2m) and finally, the topography is almost totally flat. The upper layer of the Fleurus-Farciennes site consists of 10 m silt with poor geomechanical characteristics, overlying sands (only a few meters thick) and Westphalian shales between 15 and 20 m depth. The Westphalian shales are tectonized and strongly weathered. In the past, coal seams were mined out. This activity induced locally important surface subsidence. For both nuclear sites that were investigated, a conceptual design was made that could allow any unfavorable geological or hydrogeological conditions of the site to be overcome. In Fleurus-Farciennes, for instance, the proposed conceptual design of the repository is quite original. It is composed of a shallow, buried concrete cylinder, surrounded by an accessible concrete ring, which allows permanent inspection and control during the whole lifetime of the repository. Stability and drainage systems should be independent of potential differential settlements an d subsidences. Potential radionuclides releases are controlled and have a single discharge point to the biosphere