Assessing driver's mental representation of Adaptive Cruise Control (ACC) and its possible effects on behavioural adaptations

The introduction of Adaptive Cruise Control (ACC) could be very helpful for making the longitudinal driving task more comfortable for the drivers and, as a consequence, it could have a global beneficial effect on road safety. However, before or during the usage of the device, due to several reasons, drivers might generate in their mind incomplete or flawed mental representations about the fundamental operation principles of ACC; hence, the resulting usage of the device might be improper, negatively affecting the human-machine interaction and cooperation and, in some cases, leading to negative behavioural adaptations to the system that might neutralise the desirable positive effects on road safety. Within this context, this paper will introduce the methodology which has been developed in order to analyse in detail the topic and foresee, in the future, adequate actions for the recovery of inaccurate mental representations of the system.     

Immigrants at new destinations: how they fare and why

We explore matched employer–employee data for a new destination of international migrants in Europe—Portugal. We conclude that the difference between the earnings of immigrants and natives with similar personal characteristics is for the most part due to the characteristics of the matches they form, immigrants being penalized on two different counts: absence of match-specific human capital and occupational downgrading. Moreover, we show that non-random sorting across workplaces has a significant detrimental effect on immigrants’ wages. This is the flip side of joining migrant-crowded workplaces.     

Income distribution determinants and public spending efficiency

This paper examines the impact of public spending on income distribution in OECD countries, paying attention in particular to the impact of the quality of education and public institutions. The paper assesses the efficiency of public spending in improving income distribution by using Data Envelopment Analysis. The empirical analysis shows the existence of both input and output inefficiencies across countries when relating public social spending to the inequality in income distribution.     

Urban art as platforms for bodily engagement and social encounters: the Modified Social Benches

Abstract

This paper discusses the role of the Modified Social Benches, a series of urban artworks, as platforms for bodily engagement and social encounters in open, outdoor urban spaces. Special attention is given to a couple of salient aspects involving both the design of the artworks and their social appropriation: (a) the different levels of sensory and kinesthetic engagement afforded by the benches, and (b) how these material qualities reflect in the urban space around the benches, lending the artworks a notorious social character. The social and the bodily dimensions are presented as intertwined characteristics of the Modified Social Benches. In order to explore these relationships, the paper highlights a set of key concepts, such as social encounters and affordances, as well as the notions of performance and engagement.     

Overview of Friedman’s Test and Post-hoc Analysis

When the null hypothesis of Friedman’s test is rejected, there is a wide variety of multiple comparisons that can be used to determine which treatments differ from each other. We will discuss the contexts where different multiple comparisons should be applied, when the population follows some discrete distributions commonly used to model count data in biological and ecological fields. Our simulation study shows that sign test is very conservative. Fisher’s LSD and Tukey’s HSD tests computed with ranks are the most liberal. Theoretical considerations are illustrated with data of the Azores Buzzard (Buteo buteo rothschildi) population from Azores, Portugal.     

Methylmercury Risks and EPA + DHA Benefits Associated with Seafood Consumption in Europe

The intake of methyl‐Hg and EPA + DHA through consumption of seafood in Europe as well as the associated probability of exceeding the provisional tolerable weekly intake (PTWI) and the recommended daily intake (RDI), respectively, were estimated by combining methyl‐Hg and EPA + DHA contents in the five most consumed seafood species with hypothesized consumption distributions for eight European countries, chosen on the basis of size and representative significance. Two estimators were used: plug‐in (PI) and tail estimation (TE). The latter was based on the application of the extreme value theory to the intakes distribution curves. Whereas contents data were collected from own database and published scientific papers, consumption data were obtained from statistical sources of the various countries. Seafood consumption levels varied considerably between countries, from 140 in the United Kingdom to 628.5 g/(person.week) in Iceland. The main consumed species were also different between countries. The probability of exceeding the methyl‐Hg PTWI ranged from 0.04% in the United Kingdom to 9.61% in Iceland. Concerning the probability of exceeding the RDI of EPA + DHA, Iceland was third, after Portugal (66.05%) and Spain (61.05%) and the United Kingdom was the last (0.32%). While TE was most accurate for small probabilities, PI yielded best estimates for larger probabilities.     

Practical modeling strategies for unbalanced longitudinal data analysis

In practice, data are often measured repeatedly on the same individual at several points in time. Main interest often relies in characterizing the way the response changes in time, and the predictors of that change. Marginal, mixed and transition are frequently considered to be the main models for continuous longitudinal data analysis. These approaches are proposed primarily for balanced longitudinal design. However, in clinic studies, data are usually not balanced and some restrictions are necessary in order to use these models. This paper was motivated by a data set related to longitudinal height measurements in children of HIV-infected mothers that was recorded at the university hospital of the Federal University in Minas Gerais, Brazil. This data set is severely unbalanced. The goal of this paper is to assess the application of continuous longitudinal models for the analysis of unbalanced data set.     

Building evaluation capacity in Spain: a case study of rural development and empowerment in the European Union

The development of European Community administrative authority has greatly influenced the development of an evaluation culture among the southern and central member states of the European Union. The present case study from Spain provides an example of this diffusion through the use of an empowerment evaluation approach to build evaluation capacity within the context of rural development. The study focuses on the evaluation process over a 10-year period of three local development programs run by three local partnerships created in the rural areas of the Madrid region through the European LEADER initiative. Critical components of empowerment evaluation are discussed, as well as the impact, limitations, difficulties, and applicability of the approach to rural development in the European Union. Conclusions are presented concerning evaluation capacity building and the development of an evaluation culture.