The long-term impact of family difficulties during childhood on labor market outcomes

The literature on child development shows that the promotion of cognitive and non-cognitive skills is essential to prevent inequalities in adult socioeconomic outcomes. In this context, the family environment plays a strategic role, as during childhood, it represents the most important institution for child development. This paper evaluates the long-term impact of various family difficulties during childhood on adult labor market outcomes. Evidence of negative impacts on employment probability and wages emerges from applying propensity score matching to the UK National Child Development Study. Simulation-based sensitivity analysis and standard parametric techniques support our findings. We also find that the intensity of the negative impact appears to increase with the number of recorded family difficulties, while the negative effect does not decline over the cohort’s working life. Moreover, we find that housing and economic (financial and unemployment) problems are responsible for the more serious disadvantages, while disabilities of family members and familial disharmony do not produce statistically negative impacts per se but tend to do so only if associated with other family difficulties, including economic and housing difficulties.     

Diaspora Ownership and Homeland Firms' Internationalization

Although the contribution of diaspora to international business is becoming more evident, little is known about the channels used by individual firms to benefit from diaspora. In this paper, we propose equity ownership as a form of connection between the homeland firms and diasporans (i.e. diaspora members). Specifically, we draw on the literature on diaspora combined with an owners-as-resources perspective to theorize about how diaspora owners can affect the homeland firm's internationalization. We suggest that the anticipated entry costs deriving from the liability of foreignness faced by homeland firms explain how the impact of diaspora owners varies depending on entry mode. Finally, we compare diaspora owners to other types of foreign owner which we argue have lower levels of motivation and ability to help homeland firms to internationalize, and contribute relatively less to their internationalization than diaspora owners. We test and confirm our predictions using data on 2608 domestically controlled Indian firms and their internationalization in 2006–2012.     

Analysis of Competing Risks by Using Bayesian Smoothing

We consider the competing risks set-up. In many practical situations, the conditional probability of the cause of failure given the failure time is of direct interest. We propose to model the competing risks by the overall hazard rate and the conditional probabilities rather than the cause-specific hazards. We adopt a Bayesian smoothing approach for both quantities of interest. Illustrations are given at the end.     

Designing from activities. The "ability /difficulty table", a useful tool to detect the "limit users" in the Design for All Approach

In the Design for All Approach (DfA), an important phase of the design process consists in the individuation of the so-called "limit users", that are that particular group of people with the most "critical" features for the autonomous fruition of a system or a product. Generally, however, it is not easy to identify them in a complete and objective way. A clear and complete outline of design requirements with respect to the "normal" use of a service, product or environment, moreover, is of fundamental importance in inclusive design. In fact, we know how bad design, that doesn't take in account the true "strategies of use", may lead to situations of handicap, also serious, temporary or permanent, regardless if the user is a "disabled" person or not. In relation to this scenario, the paper shows the results of a research which has developed the "Ability/Difficulty Table" ("A/D Table"), a new tool useful to identify the so-called "limit users" and their needs with respect to different activities, linking the main "difficulties", expressed by people, with the "abilities" required to carry out in autonomy the investigated activity.     

A permutation test for umbrella alternatives

There is a wide variety of stochastic ordering problems where K groups (typically ordered with respect to time) are observed along with a (continuous) response. The interest of the study may be on finding the change-point group, i.e. the group where an inversion of trend of the variable under study is observed. A change point is not merely a maximum (or a minimum) of the time-series function, but a further requirement is that the trend of the time-series is monotonically increasing before that point, and monotonically decreasing afterwards. A suitable solution can be provided within a conditional approach, i.e. by considering some suitable nonparametric combination of dependent tests for simple stochastic ordering problems. The proposed procedure is very flexible and can be extended to trend and/or repeated measure problems. Some comparisons through simulations and examples with the well known Mack & Wolfe test for umbrella alternative and with Page’s test for trend problems with correlated data are investigated.     

Predicting Severity of Foreign Body Injuries in Children in Upper Airways: An Approach Based on Regression Trees

The entry of a small item into the upper airways is one of the leading causes of injuries in children up to 14 years old. The aim of this study is to characterize types of objects causing choking along with the features of the children involved in the accident and compare results with current standards. The European Survey on Foreign Bodies Injuries Study (ESFBI) collected data on foreign body injuries from 19 European countries. The data from ESFBI were selected according to the ICD-9-CM codes 933 (foreign body in the pharynx and larynx) and 934 (foreign body in the trachea, bronchi, and lungs). Both a classification tree and a linear discriminant analysis (LDA) have been set up to predict the probability that an injured child experiences a hospitalization. The classification tree provides flowchart-type decision rules and allows for analyzing the impact of the item features, the children characteristics, and the circumstances of the accidents on the severity of the foreign body injuries. Results showed that children younger than 3.5 who are involved in an accident have a high probability to experience a hospitalization.     

A phonological study of the spatial diffusion of urban linguistic forms to the varieties of the Nile Delta1

This paper investigates the possible spatial diffusion of linguistic urban features into the areas traditionally dominated by rural varieties of Egyptian Arabic in the Nile Delta. In the last fifty years, this area has experienced enormous changes in terms of spatial mobility, education levels, patterns of socialization and consumption, and exposure to the media. These modifications have diverse effects on the linguistic varieties of previously more isolated rural speech communities and may promote the diffusion of the urban variety. Focusing on two phonological variables, this study will attempt to outline the dynamics of diffusion and retention in two locations through the analysis of 27 sociolinguistic interviews issued from a larger fieldwork study carried out in the Governorate of al?arqijja in 2007–2008.     

Estimating the frequency of familial dilated cardiomyopathy in the presence of misclassification errors

Dilated cardiomyopathy is a disease of unknown cause characterized by dilation and impaired function of one or both ventricles. Most cases are believed to be sporadic, although familial forms have been detected. The familial form has been estimated to have a relative frequency of about 25%. Since, except for familial history, familial form has no other characteristics that could help in classifying the two diseases, the estimate of the frequency of the familial form should take into account a possible misclassification error. In our study, 100 cases were randomly selected in a prospective series of 350 patients. Out of them, 28 index cases were included in the analysis: 12 were known to be familial, and 88 were believed to be sporadic. After extensive clinical examination of the relatives, 3 patients supposed to have a sporadic form were found to have a familial form. 13 cases had a confirmed sporadic disease. Models in the Log-Linear Product class (LLP) have been used to separate classification errors from underlying patterns of disease incidence. The most conservative crude estimate of the misclassification error is 16.1% (CI 0.22- 23.27%), which leads to a crude estimate of the frequency of the familiar form of about 60%. An estimate of the disease frequency, adjusted for taking into consideration the sampling plan, is 40.93% (CI 32.29-44.17%). The results are consistent with the hypothesis that genetic factors are still underestimated, although they represent a major cause of the disease.