A critical-realist view of housing quality within the post-communist EU states: progressing towards a middle-range explanation

Employing a long-term perspective, we explore whether ideologically rooted quality outcomes of housing provision under communism have persisted during the post-communist construction of housing markets. Drawing on theories of path-dependent change, we hypothesize that patterns of housing quality still reflect past lines of division, namely the Soviet housing model, and the classical and reformist models of the Eastern Bloc. Using a critical-realist approach to housing quality, we relate households’ experiences to key underlying structures; this ontological depth is then operationalized by means of micro- and macro-indicators used as input for hierarchical cluster analyses. Findings support our main hypothesis, yet there is more diversity in households’ experiences than initially assumed. Our study advances a valuable middle-range epistemological frame for understanding the complex social reality of housing and helps shatter the growing view that communist housing systems were all too similar

GINI DP 18: The interplay between economic inequality trends and housing regime changes in advanced welfare democracies

In this paper, I argue that our understanding of the increase in economic inequality in advanced welfare democracies could be enhanced by taking account of the changes which took place in the housing regimes of many countries. I demonstrate how one could derive testable hypotheses concerning a direct relationship between both social trends, which can at least theoretically go in both directions (i.e. changing housing regimes influencing inequality trends, or inequality trends influencing characteristics of housing regimes), while the ‘classical’ driving forces of increasing inequalities function as intermediate variables in a multivariate model. Alternatively, a simple interaction model could guide future research, in the sense that social trends which are routinely considered as ‘driving forces’ of increasing economic inequality – but altogether do not explain that much of the observed long-term trend – could theoretically work out in a different way under different housing regimes.income inequality trends, housing regimes, homeownership, social inequality

Becoming Poor in Belgium and Britain: the Impact of Demographic and Labour Market Events

In this paper, we model the impact on the entry into poverty of a range of demographic and labour market events. Our analyses are based on longitudinal panel data from two countries belonging to a different welfare regime type – Belgium and Britain. The results show that while in Belgium the impact of most life events is relatively small, in Britain most demographic and labour market events significantly raise the chances of becoming poor. We link the observed poverty entry patterns to the ways in which economic welfare in Belgium and Britain is distributed between the three main systems of resources distribution: the welfare state, the labour market and the family. We furthermore find that the combined influence of the interrelated parts of the welfare regime on the role of women in the household economy is a potentially important explanatory factor.Life Events; Longitudinal Research; Poverty Dynamics; Welfare Regimes

Improving the robustness of the railway system in Brussels

In order to improve the robustness of a railway system in station areas, this paper introduces an iterative approach to successively solve the route choice problem in station areas to optimality and to improve this solution by applying some changes to the timetable in a tabu search environment. Using a discrete event simulation model, the performance of our algorithms is evaluated based on a case study for the Brussels' area. The railway network of the Brussels' area is introduced and its relevance is emphasized. Computational results indicate an improvement in robustness of about 10%, a decrease in knock-on delay of more than 15%, and a 25% reduction in the number of trains that are confronted with conflicts

Home-ownership and asset-based welfare: the case of Belgium

In this article, using policy documents and both qualitative and quantitative data sources, we evaluate the extent to which the Belgian welfare system conforms to trends towards asset-based welfare involving the promotion of home-ownership as an alternative to social security provision. We conclude that, following the explicit and ongoing sponsorship of home-ownership since the end of the 19th century, in Belgium, an asset-based approach to welfare has actually been in place for some time. Most Belgian elderly people are income-poor (mainly due to low public pensions) but asset-rich. While the risk of poverty for home-owners in old age is somewhat higher than that for the general population, it is much higher for elderly renters. As far as the preconditions for a possible restructuring of the Belgian welfare state in the direction of greater reliance on asset-based welfare are concerned, we find that most of them are fulfilled. Public debt is high with increasing costs of population ageing looming large on the economic horizon. However, although some politicians have raised the issue, so far, virtually no initiatives have been taken to tap into existing housing wealth. Our qualitative evidence shows that this can be partly explained by the fact that Belgians have a rather conservative attitude towards the welfare state, which is expected to provide adequately for 'traditional' life-course risks such as unemployment and old age. Housing is considered a private issue, separated from the social security sphere

Heuristics for the traveling repairman problem with profits

In the traveling repairman problem with profits, a repairman (also known as the server) visits a subset of nodes in order to collect time-dependent profits. The objective consists of maximizing the total collected revenue. We restrict our study to the case of a single server with nodes located in the Euclidean plane. We investigate properties of this problem, and we derive a mathematical model assuming that the number of visited nodes is known in advance. We describe a tabu search algorithm with multiple neighborhoods, and we test its performance by running it on instances based on TSPLIB. We conclude that the tabu search algorithm finds good-quality solutions fast, even for large instances

Longitudinal study on the influence of Nd:YAG laser irradiation on microleakage associated of two filling techniques.

Objective: This study investigates the effects of Nd:YAG laser irradiation on apical and coronal seals, when used prior to two root canal filling techniques. Background Data: Limited information exists regarding the effects of morphologic changes to dentin walls following Nd: YAG laser irradiation on the sealing ability of root fillings. Methods: Two hundred forty teeth were analyzed by observing coronal and apical leakage of Indian ink (DL), and 60 were analyzed for through-and-through leakage using the fluid transport model (FTM). The Nd: YAG laser parameters were 1.5W, 100mJ, and 15Hz (four times for 5s at 20s intervals). Each group consisted of a lased and a nonlased subgroup: each subgroup had root fills done by either cold lateral condensation (CLC) or hybrid condensation (HC). Leakage was assessed after 48 h, and then at 1, 6, and 12 months. The DL group was divided into four groups of 15 teeth for each evaluation point. Through-and-through leakage (L in microliters/day) was measured for 48h under a pressure of 1.2 atm using FTM, and recorded as L = 0 (L1), 0 10 (L3). Results: Apical and coronal dye leakage was observed in all groups. Significant differences (p < 0.05) in apical leakage were found between HC and HC + Nd after 1, 6, and 12 months, and between CLC and CLC + Nd at 6 and 12 months. No significant differences were found between laser-irradiated and non-laser-irradiated groups with FTM. Conclusion: Pulsed Nd: YAG laser irradiation following root canal preparation may reduce apical leakage in association with hybrid gutta-percha condensation

Incidental radiological finding of a renal tumour leading to the diagnosis of Birt-Hogg-Dubé syndrome

Birt-Hogg-Dubé (BHD) syndrome is a rare autosomal dominant condition characterised by benign tumours of the hair follicle, renal cancer, pulmonary cysts and spontaneous pneumothorax. We report the diagnosis of a BHD syndrome achieved after incidental radiological finding of a renal tumour in a 24-year old man. The patient also displayed recurrent pneumothoraces and showed to have cysts in the basis of both lungs. The association of recurrent pneumothoraces and renal neoplastic disease should alert for the possible presence of this syndrome