Using the National Child Development Survey, this paper looks at cumulated experience of unemployment, highlighting how unemployment experience is concentrated on a minority of the workforce over extended periods. Eow educational attainment, ability not capttired by edtication, financial deprivation and behavioural problems in childhood raise a person's susceptibility to unemployment, there is ...

We propose an algorithm for estimating the finite-horizon expected return of a closed loop control policy from an a priori given (off-policy) sample of one-step transitions. It averages cumulated rewards along a set of “broken trajectories” made of one-step transitions selected from the sample on the basis of the control policy. Under some Lipschitz continuity assumptions on the system dynamics...

In this paper we investigate the properties of the PROFIBUS MAC protocol when operated over error prone links, like wireless links. In order to show that the protocol is very sensible to loss of control frames (e.g. token frames) we evaluate three performance measures, using a simulation approach: the mean delay, the mean station outage time and the cumulated outage time, i.e. the fraction of t...

B. Gajdzik, A. Wyciślik, The Silesian University of Technology, Faculty of Materials Science and Metallurgy, Katowice, Poland The publication characterises the quantity and quality methods applied in the assessment of the environmental aspects. The method of cumulated environmental loads is particularly interesting, where the network of process connections within an enterprise and between it an...

In this paper, we study both processes of direct and indirect knowledge transfer, from a modelling perspective, using agent-based models. In fact, there are several ways to model knowledge. We choose to study three different representations, and try to determine which one allows to better capture the dynamics of knowledge diffusion within a social network. Results show that when knowledge is mo...

By combining direct imaging and acoustic emission measurements, the subcritical propagation of a crack in a heterogeneous material is analyzed. Both methods show that the fracture proceeds through a succession of discrete events. However, the macroscopic opening of the fracture captured by the images results from the accumulation of more-elementary events detected by the acoustics. When the aco...

The work includes partial results, concerning characterization of the order Galliformes birds, genus Coturnix, Coturnix coturnix japonica species, on the teritory of Bihor county. Researches were conducted in three private hennery from both Oradea and Bihor county. Parameters studied refers to the analysis of the incubation process, namely: % clear eggs and % of fertility, % eggs with dead embr...

Starting with a monodisperse configuration with n size–1 particles , an additive Marcus–Lushnikov process evolves until it reaches its final state (a unique particle with mass n). At each of the n − 1 steps of its evolution , a merging cost is incurred, that depends on the sizes of the two particles involved, and on an independent random factor. This paper studies the asymp-totic behaviour of t...

A 47-year-old man had an acute ischemic stroke (IS); brain MRI revealed multiple silent old IS (figure 1A). A comprehensive workup, including prolonged cardiac monitoring (cumulated duration of 25 days) and cardiac transthoracic/transesophageal echography, was negative. Eleven months later, despite statin and aspirin therapy, a new symptomatic embolic IS of undetermined source occurred (figure ...

The aim of this study was to measure the incidence of high blood pressure (HBP) in a medium-size tannery in Botucatu, São Paulo State, southeast Brazil. A previous study at this tannery showed a high prevalence of arterial hypertension. A positive correlation was found between cumulated work time and arterial pressure. We followed a cohort of workers for seven years. At the end of this period, ...