The Values Adolescents Aspire to,Their Well-being and the Values Parents Aspire to for Their Children

This paper presents a study of the relationship between the psychological well-being of Spanish adolescents from 12 to 16 years old and the values they aspire to for the future (N = 1,618). Adolescents’ well-being is explored through (a) their satisfaction with 19 specific life domains, (b) the Personal Well-Being Index (Cummins, Social Indicators Research, 43, 307−334, 1998) and (c) an item on overall satisfaction with life. The values they aspire to are explored by means of a list of 23 personal qualities or values. Satisfaction domains and values aspired to have been grouped into dimensions using principal component analysis (PCA). Boys scored significantly higher on the materialistic values dimension and the capacities and knowledge related values dimension, while girls scored higher on the interpersonal relationship related values dimension. The youngest adolescents scored higher on materialistic values, while the oldest scored higher on interpersonal relationships related values. Such results are similar to those obtained in a previous study, using a shorter version of the lists of satisfaction domains and of values aspired to and a sample of 8,995 adolescents and 4,381 of their parents from five different countries. In both studies results suggest that values aspired to can be considered a well-being related construct. However, an important change appears in the latest Spanish sample: Family values no longer fit with the interpersonal relationships related values dimension in the PCA, and now function as a separate value dimension which shows no correlation with overall life satisfaction, the PWI, or life satisfaction domains with the exception of family satisfaction. Interestingly, family values have also changed their loading dimension in the PCA developed with the answers from a sample of parents about the values they aspire to for their own child’s future (N = 723). Parents’ responses were compared with those of their own child, with concordances observed in about half of the families, low discrepancies in about one third and high or very high discrepancies in about 20%. Although the results of this study have their limitations, they suggest support for the hypothesis that important changes in values aspired to may be taking place over a short period of time, consistent with the findings of changes in values in several countries (Inglehart, Modernization and postmodernization. Cultural, economic and political change in 43 societies, Princeton: Princeton University Press, 1997), but apparently with no outstanding impact on adolescents’ well-being.     

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.

Environmental and economic assessment for the optimal configuration of a sustainable solid waste collection system: a ‘kerbside’ case study

The article presents a case study concerning the improvement of the ‘kerbside’ waste collection system, now increasingly implemented in many Italian municipalities, as an alternative to traditional bring collection, with the aim of increasing the quality of waste collection and the collection rate, in order to reduce the final impact on the environment. A planning model for an integrated waste management system based on kerbside collection is presented. A heuristic procedure is also applied in order to obtain some admissible solutions of the real problem in reasonable computational time. The economic and environmental impacts are considered as significant elements for the evaluation and validation of the obtained solutions. Five alternative configurations of kerbside system, diverging in number of sub-area, synchrony of vehicles and directionality of the arcs, are compared in an economic point of view. Finally, Life-Cycle Assessment is used as a tool to compare the overall potential environmental impacts of the alternative of kerbside collection systems and also to compare the kerbside system with the traditional bring one. The different scenarios of kerbside system are comparable in terms of damage on the impact categories, while the bring system is the worst one, in terms of damage on human health, in the consumption of resources and also for the total damage score.     

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.     

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.     

Life-Satisfaction, Values and Goal Achievement: The Case of Planned Versus by Chance Searches on the Internet

The relation between life domains satisfactionand overall life satisfaction, values,internal/external perceived control and theoption of planning or by chance searchinginformation on the Internet has been exploredin a sample of Spanish adolescents aged 12 to16 (N=968). Age and sex differences have beenexamined. Results clearly confirm a positiverelation between satisfaction with life domainsand overall satisfaction with life.Satisfaction with life as a whole shows also tobe positively correlated with non-materialisticvalues. Perceived control shows to be, onceagain, a key construct to understand bothlife-satisfaction of adolescents and theirbehavioural intentions to plan or not to plantheir action to fulfil intended goals. A clearpattern between external and internal perceivedcontrol stems from our analysis: subjectsreporting to rely on chance when searchinginformation show higher external perceivedcontrol while respondents who prefer to planshow higher internal perceived control. Themore satisfaction expressed with learningrelated items (satisfaction with schoolperformance, learning, and preparation forfuture), with family and with life as a whole,the more tendencies are observed among therespondents to plan their search. No directrelation has been observed between values andbehavioural intentions to plan or not to planaction to fulfil intended goals. Perceivedcontrol, but also satisfaction with some lifedomains and with life as a whole seem to act asmediating factors between behaviouralintentions and values.     

The Subjective Well-being of Adolescents from Two Different Cultures: Applying Three Versions of the PWI in Algeria and Spain

This paper analyses the crosscultural comparability of well-being among 13–20 year-old adolescents using two samples, one from Oran County (Wilaya) in Algeria and another from Catalonia (Spain). The following are used as well-being indicators: a modified version of the original Personal Well-being Index (PWI) (Cummins et al. in Soc Indicat Res 64:159–190, 2003b), a single-item scale on overall life satisfaction (OLS) and a list of complementary items on satisfaction with various life domains. This research tests the original version of the PWI with some changes and two other versions with additional items. Confirmatory factor analyses show good fit statistics for the three versions with the pooled sample of adolescents from the two countries. The multigroup models show that correlations and regressions may be compared between the two samples, but not means, probably due to different cultural response styles among adolescents in the two countries. Structural equation models including OLS also show good fit statistics. When gender and age are included in these models, the former does not show any correlation with PWI11 in either of the two countries, whereas age shows a clearly negative correlation in both. A new version of the PWI with 11 items has shown higher standardized regression coefficients when the items are regressed on OLS and higher R² and each of the items has shown to contribute with unique explained variance using the pooled sample, although 3 of the original scale items do not show a significant contribution in Algeria. The fact that a multigroup model using this 11-item version shows good fit with constrained loadings when comparing samples from such different cultural and linguistic contexts as Catalonia and Algeria offers new opportunities for international comparative research of adolescents’ subjective well-being.     

Cross-Cultural Adaptation,Validity and Reliability of the Escala Pessoal de Resultados

The present article aims to examine the validity and reliability of the Portuguese version of Personal Outcomes Scale the Escala Pessoal de Resultados (EPR). This scale represents an instrument to measure the quality of life (QOL) in people with intellectual disabilities (ID). The study was initiated with the application of international guidelines in cross-cultural adaptation, culminating with an evaluation of 10 experts for the quantitative evidence of the content validity. All EPR’s items were considered relevant and there was a moderated agreement (k > .40) among the experts in the calculation of Cohen’s kappa, finding some coefficients’ that are considered as an excellent agreement (k > .75). In test field, our sample comprised 335 adults with ID on level of intermittent and limited support needs, even as the respective proxies. The scale showed an excellent internal consistency (α = .94). EPR’s construct validity indexes are also reported and discussed. The study provides EPR as a valid instrument for assess the QOL in ID field, and the scale seems to be useful for improvement of Portuguese rehabilitation practices and services.     

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,...     

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.