A geostatistical approach to define guidelines for radon prone area identification

Radon is a natural radioactive gas known to be the main contributor to natural background radiation exposure and the major leading cause of lung cancer second to smoking. Indoor radon concentration levels of 200 and 400 Bq/m³ are reference values suggested by the 90/143/Euratom recommendation, above which mitigation measures should be taken in new and old buildings, respectively, to reduce exposure to radon. Despite this international recommendation, Italy still does not have mandatory regulations or guidelines to deal with radon in dwellings. Monitoring surveys have been undertaken in a number of western European countries in order to assess the exposure of people to this radioactive gas and to identify radon prone areas. However, such campaigns provide concentration values in each single dwelling included in the sample, while it is often necessary to provide measures of the pollutant concentration which refer to sub-areas of the region under study. This requires a realignment of the spatial data from the level at which they are collected (points) to the level at which they are necessary (areas). This is known as change of support problem.In this paper, we propose a methodology based on geostatistical simulations in order to solve this problem and to identify radon prone areas which may be suggested for national guidelines.     

Effects of intensive longitudinal data collection on pregnancy and contraceptive use

We use an experiment based on the relationship dynamics and social life study of sexual behavior, pregnancy, and contraceptive use to investigate whether participation in weekly self-reports over one year result in differential effects on related behaviors and attitudes, compared to participation in a one-time follow-up interview requiring retrospective self-reporting for the prior year. We randomly assigned 200 subjects to either a control group or a journal group. All subjects were interviewed at the beginning of the study (baseline interview) and 12 months later (closeout interview). Subjects in the journal group also completed a five-minute web- or phone-based survey every week during the 12-month study period. We found no statistically significant difference in pregnancy rates across the two groups at closeout. Contrary to our expectation, the control group experienced a slightly larger increase in having ever used a contraceptive method, although this was mainly due to increases in the least effective methods, such as condoms and withdrawal. Respondents in the weekly interview group became slightly more positive toward childbearing in terms of one specific attitude measure, but not for the vast majority of measures. We conclude that intensive longitudinal data collection does not appear to have a large or consistent impact on respondents’ pregnancy, contraceptive use, or related attitudes, relative to the more standard longitudinal approach.     

School-to-work transitions in times of crisis: the case of Spanish youth without qualifications

This article focuses on the school-to-work transitions of Spanish youth. Herein, we study the pathways followed during a 10-year period by young people who dropped out of school without achieving any qualifications and who did not achieve any at a later date. This is a population aged 26–28 years old with an educational level of ISCED 0–1. The study adopts a plurimethodological approach that includes an initial qualitative phase whose main instrument was the biographical interview and a second phase with a quantitative focus in which data were collected using a questionnaire. The results show the effect of dropping out of education without qualifications on the pathways of the youths as well as their greater vulnerability in the current period of economic crisis, which results in a high percentage of the population that has no employment, education or training. This effect is even greater among women. This study highlights the difficulties associated to returning to education, the reproduction of educational exclusion in the population that did not obtain the diploma corresponding to compulsory secondary education, and a lack of public policies to support this specific population.     

Diversity,civic virtues and ecological austerity

A single global culture and a unique set of world institutional arrangements, based on an ever-increasing consumption of natural resources and environmental pollution is not sustainable nor can be sustained. In this paper some key ideological and moral com­ponents of the urgently required changes towards a culture of sustainability are examined, together with the implications, difficulties and requirements for its embodiment both in individual practices and in social institutions. In particular, it is argued that the values and attitudes which promote the protection and integration of diversity—both cultural and biological—and restrain the current trends in natural resource consumption and environmental pollution are to be developed by the citizenry if global societies are to survive. In the domains of political participation, rational dialogue and civic virtue, sustainability is akin to the inherited republican ideals of liberty, equality and fraternity. Sustainability must now become an indispensable fourth moral pillar in the structuration of society and, in particular, in the coming world republican polity, which will necessarily take account of the diversity of cultures and institutions. It is shown that, otherwise, the now developing unsustainable global society would otherwise cease to exist.     

Cross‐Ethnic Equivalence of Socialization Measures in European American and African American Youth

We examined the cross‐ethnic equivalency of socialization measures developed primarily with European American families. Four aspects of measurement equivalence were assessed: conceptual, operational, scalar, and functional. Evidence of between—and within—group measurement equivalency of socialization measures was derived from youth reports of 500 European American and 134 African American individuals ages 10 to 18, using confirmatory factor analyses and item response theory analyses. Findings indicate that most individual indicators of socialization, with the exception of paternal psychological control and parent‐youth conflict, demonstrated cross‐ethnic equivalence. The findings also suggest that lax control is better represented as a multidimensional construct (leniency and laxness).     

Social aspects of health care in Igbo-Ora, Nigeria

The philosophy and aims of a health care scheme in Igbo-Ora, Nigeria, are outlined. Some of the problems related to creating a data base from which work can proceed are set out and discussed. Social factors are mentioned, and attention is drawn to the need for seeing health problems against general settings specific to a given area rather than measuring upto some abstract or "scientific" standards. The uncharted ground in many Third World practices make this particularly important.     

Intermediate Units in Multinational Corporations: Advancing Theory on their Co‐parenting Role,Dynamics and Outcomes

Due to the dispersion of headquarters’ activities across organizational and geographical boundaries, intermediate units (IUs) are emerging as a key actor in international business. These units are intermediate structural layers between headquarters (HQ) and local subsidiaries with specific HQ responsibilities. Through a systematic review of 68 studies published between 1996 and 2020, we develop a conceptual framework that integrates complementary streams of theoretical and empirical research with IUs as the focal unit of analysis. Our aims are to disentangle how the main theories in this field address the antecedents of IU creation, and explain the dynamism in the roles and functions of IUs and their outcomes. We also propose a conceptualization of IUs as co‐parents in a dynamic system in which parenting functions are shared by IUs and headquarters. Finally, we highlight avenues for future research, emphasizing opportunities to advance the understanding of IUs using different theoretical lenses that may help scholars position their work within the broader stream of literature.     

El autoconcepto como factor condicionante de la eficacia del feedback sobre el rendimiento

Resumen

El objeto de esta investigación, llevada a cabo en una muestra de 118 alumnos de 5.° nivel de Educación Básica, fue el de comprobar la influencia del feedback en la ejecución de una prueba de contenidos académicos y si el autoconcepto del alumno mediatiza la eficacia del feedback. La muestra se dividió en tres categorías, según las puntuaciones obtenidas en un test de autoconcepto académico, y cada una de estas categorías se subdividió en tres grupos equivalentes, dándose a cada uno un tipo de feedback (positivo, negativo, neutro). En cuatro grupos el feedback resultó eficaz en el sentido esperado, siendo más receptivos los alumnos que tienen una opinión favorable de sí mismos.