Five Years of the Citizens Directive in the UK - Part 2

This two-part article reviews how the UK authorities have fared in the practical application of Directive 2004/38/EC in the five years since it entered into force. It identifies and examines the most common problems faced by EU citizens when seeking to have their rights recognised by the UK authorities applying the Immigration (European Economic Area) Regulations 2006 by reference to questions and complaints received by Your Europe Advice. In examining the experience of EU citizens and their family members living in the UK, account is taken of a number of recent judgments of the European Court of Justice concerning EU citizenship, including Metock, Lassal, Eman & Sevinger and Ruiz Zambrano. Part 1 covered the scope and beneficiaries of the Directive, the conditions placed on the right of residence, the circumstances under which such a right may be retained and ends with a discussion of the right of permanent residence. Part 2 examines problems relating to residence formalities and obstacles encountered in exercising the right to equal treatment. It then looks at the circumstances where the right of residence may be lost, followed by a discussion of appeal rights. It concludes by providing recommendations for the amendment of both the Directive and the EEA Regulations

Modeling the Human Kinetic Adjustment Factor for Inhaled Volatile Organic Chemicals: Whole Population Approach versus Distinct Subpopulation Approach

The objective of this study was to evaluate the impact of whole- and sub-population-related variabilities on the determination of the human kinetic adjustment factor (HKAF) used in risk assessment of inhaled volatile organic chemicals (VOCs). Monte Carlo simulations were applied to a steady-state algorithm to generate population distributions for blood concentrations (CAss) and rates of metabolism (RAMs) for inhalation exposures to benzene (BZ) and 1,4-dioxane (1,4-D). The simulated population consisted of various proportions of adults, elderly, children, neonates and pregnant women as per the Canadian demography. Subgroup-specific input parameters were obtained from the literature and P3M software. Under the “whole population” approach, the HKAF was computed as the ratio of the entire population's upper percentile value (99th, 95th) of dose metrics to the median value in either the entire population or the adult population. Under the “distinct subpopulation” approach, the upper percentile values in each subpopulation were considered, and the greatest resulting HKAF was retained. CAss-based HKAFs that considered the Canadian demography varied between 1.2 (BZ) and 2.8 (1,4-D). The “distinct subpopulation” CAss-based HKAF varied between 1.6 (BZ) and 8.5 (1,4-D). RAM-based HKAFs always remained below 1.6. Overall, this study evaluated for the first time the impact of underlying assumptions with respect to the interindividual variability considered (whole population or each subpopulation taken separately) when determining the HKAF

Travaux d'amélioration de l'Escaut maritime: rapport

The Scheldt, which is the gateway whereby ships have access to the port of Antwerp, is a tidal river flowing into the North Sea at Flushing. The tidal range, which on an average is 3.80 m, is as much as 4.70 m in the port of Antwerp. The natural depth over the bars between Hansweert and the port of Antwerp is insufficient for navigational needs. Important dredging operations have to be undertaken, in order to maintain the depth. Furthermore, as the dimensions of ocean going vessels are in constant increase, both as regards their beam and their draft, larger and larger quantities of sand have to be dredged. The bars requiring regular dredging are shown in figure I of plate I.In view of the fact that the improvement obtained by dredging is insufficient, it has become necessary to consider the undertaking of river improvement works. These are being studied at the Hydraulics Laboratory at Borgerhout (Antwerp). This is a State controlled center which comes under the Administration of Waterways (Ponts et Chaussées).The areas most in need of improvement are those of Bath and Walsoorden. They lie in Dutch territory; hence the work will have to be done by common agreement with the Netherlands.The paper describes the results obtained from model studies

Does Self-directedness in Learning and Careers Predict the Employability of Low-Qualified Employees?

Employability has become a key element in sustaining successful vocational careers. The role of self-directedness is considered paramount in maintaining one's employability. However, it also requires certain competences on part of employees to invest in learning and career development. This study examines the influence of self-directedness in learning and career of low-qualified employees on their employability. In a follow-up study of 284 low-qualified employees, we find that higher levels of self-directedness in learning and career of employees corresponds with higher chance to be promoted to higher-level job positions (vertical job mobility). However, no relationship was found between different formats of self-directedness and job retention or horizontal job mobility of lower qualified personnel.</p

Modeling the Human Kinetic Adjustment Factor for Inhaled Volatile Organic Chemicals: Whole Population Approach versus Distinct Subpopulation Approach

The objective of this study was to evaluate the impact of whole-and sub-population-related variabilities on the determination of the human kinetic adjustment factor (HKAF) used in risk assessment of inhaled volatile organic chemicals (VOCs). Monte Carlo simulations were applied to a steady-state algorithm to generate population distributions for blood concentrations (CAss) and rates of metabolism (RAMs) for inhalation exposures to benzene (BZ) and 1,4-dioxane (1,4-D). The simulated population consisted of various proportions of adults, elderly, children, neonates and pregnant women as per the Canadian demography. Subgroupspecific input parameters were obtained from the literature and P3M software. Under the &quot;whole population&quot; approach, the HKAF was computed as the ratio of the entire population&apos;s upper percentile value (99th, 95th) of dose metrics to the median value in either the entire population or the adult population. Under the &quot;distinct subpopulation&quot; approach, the upper percentile values in each subpopulation were considered, and the greatest resulting HKAF was retained. CAss-based HKAFs that considered the Canadian demography varied between 1.2 (BZ) and 2.8 (1,4-D). The &quot;distinct subpopulation&quot; CAss-based HKAF varied between 1.6 (BZ) and 8.5 (1,4-D). RAM-based HKAFs always remained below 1.6. Overall, this study evaluated for the first time the impact of underlying assumptions with respect to the interindividual variability considered (whole population or each subpopulation taken separately) when determining the HKAF

The degeneracy between star-formation parameters in dwarf galaxy simulations and the Mstar-Mhalo relation

We present results based on a set of N-Body/SPH simulations of isolated dwarf galaxies. The simulations take into account star formation, stellar feedback, radiative cooling and metal enrichment. The dark matter halo initially has a cusped profile, but, at least in these simulations, starting from idealised, spherically symmetric initial conditions, a natural conversion to a core is observed due to gas dynamics and stellar feedback. A degeneracy between the efficiency with which the interstellar medium absorbs energy feedback from supernovae and stellar winds on the one hand, and the density threshold for star formation on the other, is found. We performed a parameter survey to determine, with the aid of the observed kinematic and photometric scaling relations, which combinations of these two parameters produce simulated galaxies that are in agreement with the observations. With the implemented physics we are unable to reproduce the relation between the stellar mass and the halo mass as determined by Guo et al. (2010), however we do reproduce the slope of this relation.Comment: Accepted for publication in MNRAS | 12 pages, 8 figure

Simulations of the formation and evolution of isolated dwarf galaxies - II. Angular momentum as a second parameter

We show results based on a large suite of N-Body/SPH simulations of isolated, flat dwarf galaxies, both rotating and non-rotating. The main goal is to investigate possible mechanisms to explain the observed dichotomy in radial stellar metallicity profiles of dwarf galaxies: dwarf irregulars (dIrr) and flat, rotating dwarf ellipticals (dE) generally possess flat metallicity profiles, while rounder and non-rotating dEs show strong negative metallicity gradients. These simulations show that flattening by rotation is key to reproducing the observed characteristics of flat dwarf galaxies, proving particularly efficient in erasing metallicity gradients. We propose a "centrifugal barrier mechanism" as an alternative to the previously suggested "fountain mechanism" for explaining the flat metallicity profiles of dIrrs and flat, rotating dEs. While only flattening the dark-matter halo has little influence, the addition of angular momentum slows down the infall of gas, so that star formation (SF) and the ensuing feedback are less centrally concentrated, occurring galaxy-wide. Additionally, this leads to more continuous SFHs by preventing large-scale oscillations in the SFR ("breathing"), and creates low density holes in the ISM, in agreement with observations of dIrrs. Our general conclusion is that rotation has a significant influence on the evolution and appearance of dwarf galaxies, and we suggest angular momentum as a second parameter (after galaxy mass as the dominant parameter) in dwarf galaxy evolution. Angular momentum differentiates between SF modes, making our fast rotating models qualitatively resemble dIrrs, which does not seem possible without rotation.Comment: Accepted for publication in MNRAS | 19 pages, 20 figures | extra online content available (animations) : on the publisher's website / on the YouTube channel for the astronomy department of the University of Ghent : http://www.youtube.com/user/AstroUGent / YouTube playlist specifically for this article : http://www.youtube.com/user/AstroUGent#grid/user/EFAA5AAE5C5E474