Intercultural competencies: what students in study and placement mobility should be learning

When promoting intercultural learning in the context of study and placement mobility, intercultural educators are specifying what students should be learning. Research not only confirms the genuine impact of real-life intercultural contact on intercultural learning, but also shows how this impact can be enhanced through institutional support and the integration of intercultural learning into the curriculum. In this position paper, we propose a number of considerations that need to be taken into account in setting learning objectives for mobile students. Referring to research and policy documents mostly in relation to the European mobility context, we address consecutively what students are learning in study and placement mobility; what they say they want to learn; what they should learn for; and finally, what they should be learning. We conclude that intercultural educators should pay heed to what students are actually learning in study and placement mobility over a time span that transcends the current sojourn abroad. We also recommend that educators take steps to support students in mobilising the intercultural skills they acquired abroad for increased employability.     

Skill utilization and well-being: a cross-level story of day-to-day fluctuations and personal intrinsic values

The opportunity to use one's skills at work is an important prerequisite for employee well-being. Drawing on self-determination and person-environment fit theory, this diary study aims to add to our understanding of this important phenomenon in two ways. Firstly, we examine the associations of within-subject daily variations in skill utilization with well-being. Secondly, we model work value orientation as a between-subject factor that moderates this within-subject relationship. Specifically, we advocate that daily skill utilization is more beneficial (in terms of more daily work engagement and less daily emotional exhaustion) for employees holding predominantly intrinsic (i.e. self-development, community contribution) as opposed to extrinsic (i.e. financial success, status) values. Results of multilevel modelling using diary data from 99 service workers over five working days, supported the assumption that daily skill utilization was positively related to daily work engagement, particularly among employees holding a predominantly intrinsic work value orientation. Contrary to our expectations, daily skill utilization was unrelated to daily exhaustion, both for employees holding high and low intrinsic values. The discussion highlights the importance of, and employees’ receptiveness to, variations in beneficial working conditions.     

Pension reform, employment by age, and long-run growth

We study the effects of pension reform on hours worked by three active generations, education of the young, the retirement decision of older workers, and aggregate growth in a four-period OLG model. The model explains important facts well for many OECD countries. Our simulation results prefer an intelligent pay-as-you-go system above a fully funded private system. Positive effects on employment and growth are the strongest when the pay-as-you-go system includes a tight link between individual labor income and the pension, and when it attaches a high weight to labor income earned as an older worker to compute the pension assessment base.     

The Baby Boom and Its Causes: What We Know and What We Need to Know

This study analyzes the timing, magnitude, and volume of the mid‐twentieth century baby boom in European and non‐European Western countries. The baby boom is found to have been especially strong in the non‐European countries, fairly strong in some European countries, and quite weak in others. While the boom has often been linked with postwar economic growth and the recuperation of births postponed during the Depression era, we argue that this is only a limited part of the story. In most cases the recovery of the birth rate started well before the end of World War II, a fact not accounted for by existing theories. We investigate the roles played by the recovery of period as well as cohort fertility, the underlying marriage boom, and the recovery of marital fertility. We identify major puzzles for future research, including the reasons for strongly declining ages at marriage and the role played by contraceptive failure in the rise of high‐parity births.     

On the Choice of a Prior for Bayesian D-Optimal Designs for the Logistic Regression Model with a Single Predictor

The Bayesian design approach accounts for uncertainty of the parameter values on which optimal design depends, but Bayesian designs themselves depend on the choice of a prior distribution for the parameter values. This article investigates Bayesian D-optimal designs for two-parameter logistic models, using numerical search. We show three things: (1) a prior with large variance leads to a design that remains highly efficient under other priors, (2) uniform and normal priors lead to equally efficient designs, and (3) designs with four or five equidistant equally weighted design points are highly efficient relative to the Bayesian D-optimal designs.     

Fuzzy multi-attribute decision-making for grouping of electronic components in process planning

The grouping of objects problem has a wide-range of applications in industry. In electronic assembly planning, grouping components play an important role as they can reduce drastically the number of possible sequences of operations. This paper considers the grouping problem of electronic component families based on their multiple attributes. The difficulty lies with the conflict of criteria when selecting a certain component into a group. In order to overcome this difficulty, the proposed approach introduces the concept of fuzziness, which expresses the degree of concordance on the decision. An example of classification electronic components is presented to illustrate the proposed method.     

A consistency algorithm based on information theory

This paper provides a geometric‐mean solution to the consistency problem of multidimensional demographic projection models, based on the constrained minimization of an entropy function. A comparison with the existing harmonic‐mean solution yields many similarities and almost no differences: both solutions satisfy the properties of availability, monotonicity, homogeneity, competition, and symmetry, and, for both solutions, there is a convenient one‐to‐one relationship between adjustments in aggregate numbers of events, on the one hand, and age‐specific numbers of events, on the other hand. However, one major advantage of the geometric mean is that its corresponding distance function is firmly based on (information) theory.     

A neural' network applied to tlie calculation of lyapunov exponents 1

Chaotic deterministics systems are characterised by the instability of orbits on an attractor. The largest Lyapunov exponent measures on average the exponential growth rate of small deviations along an orbit and gives as such an indication whether or not the dynamic generating process is unstable. The direct method for calculation of the Lyapunov exponent, based on finite differences as formulated by the so-called Wolf-algorithm,fails on medium sized data sets. Alternatively, one can use a neural network with backpropagation to estimate a data generating function. This so-calletl indirect method enables us to recover the theoretical value of the largest Lyapunov exponent in several examples.     

Uniform strong convergence results for the conditional kaplan-meier estimator and its quantiles

We consider a fixed design model in which the responses are possibly right censored. The aim of this paper is to establish some important almost sure convergence properties of the Kaplan-Meier type estimator for the lifetime distribution at a given covariate value. We also consider the corresponding quantile estimator and obtain a modulus of continuity result. Our rates of uniform strong convergence are obtained via exponential probability bounds.