Positioning and role of public relations in large Belgian organizations

This paper studies the position and role of public relations in the hierarchical structure of Belgian organizations of at least 50 employees. Empirical data was collected from a web survey (n = 750) to find out to what extent principles of excellence in public relations are applied in Belgium.     

A New Approach to Volatility Modeling: The Factorial Hidden Markov Volatility Model

A new process—the factorial hidden Markov volatility (FHMV) model—is proposed to model financial returns or realized variances. Its dynamics are driven by a latent volatility process specified as a product of three components: a Markov chain controlling volatility persistence, an independent discrete process capable of generating jumps in the volatility, and a predictable (data-driven) process capturing the leverage effect. An economic interpretation is attached to each one of these components. Moreover, the Markov chain and jump components allow volatility to switch abruptly between thousands of states, and the transition matrix of the model is structured to generate a high degree of volatility persistence. An empirical study on six financial time series shows that the FHMV process compares favorably to state-of-the-art volatility models in terms of in-sample fit and out-of-sample forecasting performance over time horizons ranging from 1 to 100 days. Supplementary materials for this article are available online.     

Contextualising institutional complementarity. How long‐term unemployment depends on employment protection legislation,active labour market policies and the economic climate

This study investigated if and how active labour market policies (ALMPs) and employment protection interact with each other in light of long‐term unemployment reduction. We argue that how well the interaction between both labour market institutions reduces long‐term unemployment depends on the level of economic growth. To improve analytical clarity, two types of ALMPs were differentiated, namely training and employment programmes. Using data on 20 European countries over 16 years, our results suggest that employment protection moderates the relationship between employment programmes and long‐term unemployment. The combination of high spending on employment programmes and less strict employment protection is associated with less long‐term unemployment. This moderation effect is stronger during an economic downturn. A moderation effect from employment protection on the relationship between training programmes and long‐term unemployment was not found, even when the economic climate was taken into account as a contextual factor.     

Automatic odor prediction for electronic nose

An electronic nose (e-nose), or artificial olfaction, is a device that analyzes the air to quantify odor concentration using an array of gas sensors. This equipment is a monitoring tool for industrial firms. There is a shortage of an algorithm to address odor prediction challenges in an automatic fashion. These challenges include unreliable data transfer due to sensor malfunction or missing data due to anomalies in mobile data connection. Providing such an algorithm avoids human intervention in data handling, and elevates electronic nose towards smart nose. We address these challenges by proposing a data validation and data imputation method combined with a robust odor prediction machinery. Our proposed algorithm is successfully implemented on the e-nose equipment and is serving the industry currently.     

Autoregressive Moving Average Infinite Hidden Markov-Switching Models

Markov-switching models are usually specified under the assumption that all the parameters change when a regime switch occurs. Relaxing this hypothesis and being able to detect which parameters evolve over time is relevant for interpreting the changes in the dynamics of the series, for specifying models parsimoniously, and may be helpful in forecasting. We propose the class of sticky infinite hidden Markov-switching autoregressive moving average models, in which we disentangle the break dynamics of the mean and the variance parameters. In this class, the number of regimes is possibly infinite and is determined when estimating the model, thus avoiding the need to set this number by a model choice criterion. We develop a new Markov chain Monte Carlo estimation method that solves the path dependence issue due to the moving average component. Empirical results on macroeconomic series illustrate that the proposed class of models dominates the model with fixed parameters in terms of point and density forecasts.     

The Influence of Preference Information on Equivalent Income

Equivalent income (EI) has been proposed as an interesting measure for well-being. It summarizes the achievement in terms of different dimensions of well-being into one indicator while explicitly taking into account individual preferences over these dimensions. Acquiring the necessary information on these individual preferences over the dimensions of well-being is not an easy task, though. One way is to derive them from subjective well-being (SWB) information. The most often used SWB question is satisfaction with life. In this article we calculate EI based on preferences derived from three often used SWB questions: satisfaction with life, happiness and the extent to which individuals consider what they do in life as valuable. Then we analyse the profile of the worst off according to the measures. The results show that the achievements in terms of the dimensions of well-being matters more for the EI calculations than the preferences. When analyzing the worst off, it is shown that the profile of the individuals considered as badly off by each of the equivalent income measures differs.     

Bequests and family traditions: the case of nineteenth century France

Like father, like son: is the bequest behavior of children “inherited” from that of their parents? Most economic models (altruistic, paternalistic or exchange models) postulate that bequest behavior does not depend per se on parents’ behavior. Yet because of data limitations, few empirical studies have analyzed the link between bequests left and inheritances received. In this paper, we evaluate the effect of inheritance relative to lifetime income on the amount that individuals bequeath, in the case of France. This study uses original historical data including wealth genealogies covering the nineteenth and first half of the twentieth centuries for the Loire Inférieure département. Empirical evidence suggests that the propensity to bequeath is much greater for inheritance than for human resources: a deceased having inherited twice the average wealth leaves 35–60 % more to his own heirs that the average for his generation. In nineteenth century France, bequests are explained more by inheritance received than by personal savings per se.     

An office chair to influence the sitting behavior of office workers

Since the introduction of ergonomic guidelines in the design of office chairs, a lot of effort has been put in designing these office chairs accordingly. Because these features all have to be adjusted in different ways (mostly a knob underneath the seat surface), and because every office chair offers different solutions, often users do not use all of the adjustments, and thus do not use the office chair an the optimal ergonomic way. The aim of this paper is to study the influence of feedback on sitting habits of office workers in a field test during 4 weeks. 40 office workers were selected for this test (13 male, 27 female). They were divided in three groups. A control group, a group that received a sitting instruction and a group that received sitting instruction and feedback on their posture every hour that they sit. The results show that there is an effect in average increase in basic posture on both the group that received instruction and the group that received feedback. This effect decreases over time. There was no effect in the control group.