Attachment‐facilitating interactions in non‐kin foster families

This study aims to analyse the interaction between children in foster care and their main caregivers during a microcoded co‐construction task, focusing on the verbal and non‐verbal behaviours that the adults use to promote a secure attachment in the child. It also examines how children and caregivers' socio‐demographic variables relate to the interaction. The sample is made up of 28 Spanish children between 4 and 9 years old in long‐term non‐kin foster care and their foster families. The building task was administered to 28 dyads, composed of the child and the main caregiver in each family. Our results showed that the caregivers' use of attachment‐facilitating behaviours was frequent during the interaction. Moreover, children tended to display a positive attitude when adults used these attachment‐facilitating behaviours. We also found some differences in the interaction according to the caregivers and children's age, the child's gender and the caregivers' satisfaction with the child's development. These results offer us a better understanding of the functioning of the adult–child relationships in foster families, which helps us make more efficient interventions to improve the caregivers' sensitivity towards the children's needs and difficulties.     

Cessation of breastfeeding in association with oxytocin administration and type of birth. A prospective cohort study

Background

Some studies have suggested an association between synthetic oxytocin administration and type of birth with the initiation and consolidation of breastfeeding.

Geospatial Modeling of Containment Probability for Escaped Wildfires in a Mediterranean Region

Despite escalating expenditures in firefighting, extreme fire events continue to pose a major threat to ecosystem services and human communities in Mediterranean areas. Developing a safe and effective fire response is paramount to efficiently restrict fire spread, reduce negative effects to natural values, prevent residential housing losses, and avoid causalties. Though current fire policies in most countries demand full suppression, few studies have attempted to identify the strategic locations where firefighting efforts would likely contain catastrophic fire events. The success in containing those fires that escape initial attack is determined by diverse structural factors such as ground accessibility, airborne support, barriers to surface fire spread, and vegetation impedance. In this study, we predicted the success in fire containment across Catalonia (northeastern Spain) using a model generated with random forest from detailed geospatial data and a set of 73 fire perimeters for the period 2008–2016. The model attained a high predictive performance (AUC = 0.88), and the results were provided at fine resolution (25 m) for the entire study area (32,108 km²). The highest success rates were found in agricultural plains along the nonburnable barriers such as major road corridors and largest rivers. Low levels of containment likelihood were predicted for dense forest lands and steep-relief mountainous areas. The results can assist in suppression resource pre-positioning and extended attack decision making, but also in strategic fuels management oriented at creating defensive locations and fragmenting the landscape in operational firefighting areas. Our modeling workflow and methods may serve as a baseline to generate locally adapted models in fire-prone areas elsewhere.     

Implicit cover inequalities

In this paper we consider combinatorial optimization problems whose feasible sets are simultaneously restricted by a binary knapsack constraint and a cardinality constraint imposing the exact number of selected variables. In particular, such sets arise when the feasible set corresponds to the bases of a matroid with a side knapsack constraint, for instance the weighted spanning tree problem and the multiple choice knapsack problem. We introduce the family of implicit cover inequalities which generalize the well-known cover inequalities for such feasible sets and discuss the lifting of the implicit cover inequalities. A computational study for the weighted spanning tree problem is reported.     

Opting in to Opt out? Emigration and Group Participation in Albania

The objective of this paper is to determine whether the participation in social organizations represents a complement or a substitute with respect to international emigration. To address this research question, an instrumental variable approach is used, as group participation and international migration are potentially jointly determined. This is the case if the family considers emigration and group participation as alternative strategies to cope with uncertainty or a liquidity need, or alternatively when the family decides to invest in group participation in order to gain information helpful to emigrate. The results of the empirical estimation reveal that families participating in social organizations are more likely to migrate internationally and therefore social networks act as a complement for emigration. This may indicate that families recourse to social networks in order to collect important information that facilitates international migration.     

Comfort in English and Swedish country houses,c.1760–1820

Comfort as an idea and ideal has attracted growing interest, especially in an Anglo-American context. Much of the discussion has centred either on improvements in physical comfort, not least through new technologies, or on emotional comfort and the social construction of the home. This article brings together these ideas in a comparative analysis of English and Swedish landowners. It draws on a range of correspondence to uncover more about the ways in which members of the elite themselves conceived and achieved comfort in very different geographical, economic and cultural contexts. Whilst ‘English comfort’ became widespread as an idealization of elite lifestyles by the early nineteenth century, both in Sweden and elsewhere, we argue that many of its social and physical imperatives were commonplace much earlier. This involved shared concerns with warmth and airiness, and the ways in which these were linked to health and well-being, but also with the construction of appropriate social settings. Yet, it was the emotional and non-material dimensions of comfort that dominated the correspondence in both countries: a concern with family and with home as a place defined by relationships with people rather than things.     

Leafy spanning k-forests

Journal of Combinatorial Optimization - We denote by Leafy  Spanning $$k$$ -Forest the problem of, given a positive integer k and a graph G with at most k components,...     

DEA-Like Model and Common Weights Approach for the Construction of a Subjective Community Well-Being Indicator

A growing literature assesses the quality of life and well-being in geographically and/or politically divided areas. The paper proposes a new subjective well being (SWB) indicator based on residents’ satisfaction with environment and community, personal life and leisure activities. Our approach is a novel construction and new application of the well-being index, specifically, a DEA-like model with common weights under the benefit of the doubt (BoD) approach. This approach is very interesting in the SWB framework, allowing us to differentiate efficient individuals or estimate the relative importance of each domain in the SWB indicator. The results state that Personal life is the domain that most profoundly affects SWB index; it also differs in groups of individuals and geographic spaces.     

Make,buy or both? R&D strategy selection

The aim of this paper is to increase our knowledge of a firm's innovative behaviour by jointly analysing its internal resources, industry characteristics and appropriability conditions as drivers of its R&D strategy selection: make, buy and make-buy. Based on panel data (1992–2005) covering 1539 Spanish manufacturing firms, results show that firms lacking organisational resources and competing in stable markets prefer the buy strategy. Firms with a high level of technological resources that are immersed in high-tech industries are prone to selecting the make-buy strategy. Internationalised firms with high levels of appropriability prefer the make strategy.     

Sharing of Resources Within the Family and the Economics of Household Decision Making

Over the last 3 decades, economic models have been developed that recognize that potentially conflicting interests may shape household decisions and the sharing of resources within families. This article provides an overview of how decision making within households has been modeled within economics, presents the main benefits and limitations of those models, and critically assesses their usefulness to researchers from other disciplines interested in the within‐ household distribution of resources. The main focus is on the theory, empirical application, and results of the currently dominant collective models, but the authors also look at developments that led up to them and some subsequent extensions and alternative approaches. Given the weight placed by policymakers and others on economic and quantitative evidence, it is incumbent on researchers of all disciplines to understand the achievements and limitations of the models used, explicitly or implicitly, to produce such evidence and the assumptions that lie behind them.