Lithium abundance evolution in open clusters: Hyades, NGC752, and M67

Mixing mechanisms bring the Li from the base of the convective zone to deeper and warmer layers where it is destroyed. These mechanisms are investigated by comparing observations of Li abundances in stellar atmospheres to models of stellar evolution. Observations in open cluster are especially suitable for this comparison, since their age and metallicity are homogeneous among their members and better determined than in field stars. In this work, we compare the evolution of Li abundances in three different clusters: the Hyades, NGC752, and M67. Our models are calculated with microscopic diffusion and transport of chemicals by meridional circulation, and calibrated on the Sun. These comparisons allow us to follow the evolution of Li abundance as a function of stellar mass in each cluster and as a function of the age by comparing this evolution in each cluster. We evaluate the efficiency of the mixing mechanisms used in the models, and we try to identify the lacking mechanisms to reproduce the observed evolution of Li abundance.Comment: 6 pages, 4 figures, conference publication of "New advances in stellar physics: from microscopic to macroscopic processes

External dependency, value added generation and structural change: an inter-industry approach

The external dependency of many industries and the corresponding low value added generated in production, combined with a relatively weak export potential, create high external deficits and growing debt to GDP ratios in several open economies. In this paper we propose an empirical method to assess the evolution of these vulnerabilities, based on a new treatment of interindustry production multipliers. The (gross)output growth potential given by the column sums of the Leontief inverse matrix (backward linkage indicators) results from three terms: interindustry consumptions, value added and imported inputs. After a convenient arrangement of these terms, the evolution of backward linkage indicators can be used to detect structural changes, particularly quantifying a (net) growth effect (more value-added generation) and an external dependency effect (more imported inputs), and to classify the productive sectors accordingly. An application to the Portuguese Economy is made, using input-output tables for the years 1980, 1995 and 2005. This method can also be useful as a simple, but suggestive, device to compare the evolution of two or more economies, along their development processes in time.

Assessing Economic Complexity with Input-Output Based Measures

Economic complexity can be defined as the level of interdependence between the component parts of an economy. In input-output systems, intersectoral connectedness is a crucial feature of analysis, and there are many different methods for measuring it. Most of the measures, however, have drawbacks that prevent them from being used as a good indicator of economic complexity, because they were not explicitly made with this purpose in mind. In this paper, we present, discuss and compare empirically different indexes of economic complexity as intersectoral connectedness, using the interindustry tables of several OECD countries.input-output analysis; intersectoral connectedness; economic complexity

A New Kind of Production Multiplier for Assessing the Scale and Structure Effects of Demand Shocks in Input-Output Frameworks

The main purpose of this paper is to develop a new kind of input-output multiplier that would be particularly well suited to quantifying the impacts of final demand changes on the sectoral output growth potential of an economy. Instead of using the traditional output multipliers, solving an appropriate optimization problem provides what can be called input-output Euclidean distance multipliers. This method does not impose unitary final demand shocks with a fixed (predetermined) structure, allowing the “IO economy” to change across the spectrum of all possible structures. It can be very helpful in measuring interindustry linkages and key sectors in a national or regional economy. An empirical illustration is made, using national (Spain and Portugal) and regional (Balearic Islands and the Azores) input-output data.input-output analysis; ultra-peripheral regions; structural change

The House of the Little Tooth Diniz: An Oral Health Educational Project

Dental caries is currently one of the major public health problems, given its high incidence among 6-12-year-old children. This age group of children is considered a priority group, due to the transitional period of the replacement of deciduous teeth. This article intends to present a ludic-pedagogical instrument for oral health education, targeted at these children, based on the learning of problems related to oral health through a story narrative and associated pictograms. By means of a health education manual with several pictorial representations of dentistry clinical acts, we intended to imagetically reinforce the therapeutic adherence of children to Paediatric Dentistry as well as oral health prevention care, which are considered determinant factors for oral health success amongst children. The choice of a handbook format for this purpose was considered a health education pedagogical strategy with added value to the Paediatric Dentistry appointment setting, granting patients an active and leading role in their therapeutic path. The handbook can also be of use to younger children, through parental storytelling, establishing a dyadic communication between parents, educators and professionals

The Hitchcok boy: treating aggressive acting out in child therapy

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited."P, a seven-year-old boy, derived significant benefit from a three year psychoanalytic psychotherapy. This clinical case, illustrate communication barriers that develop and establish themselves in the context of psychosis. Throughout the analytical process, the psychotherapist was consistently faced with a relational paradox: she had before her a child exhibiting chaotic psychic functioning, always on the verge of disintegration, and further characterised by a strong desertification of ludic expression. In considering the psychoanalytic trajectory, the current article examines the manifest relational communication aiming at a permanent attack on the therapeutic attachment, therefore intensifying the analyst’s creative suspense.

I am (not) The Little Mermaid: a case report

"Sarah, currently aged 14Y: 3M, is a late child of a socially differentiated couple, who were already the parents of monozygotic female twins, aged 13Y at the time Sarah was born. Sarah had experienced “double parenting” for years due to her twin sisters, who sequestered and took hold of her under the nonchalant and emotionally detached eyes of her biological parental couple and which led to the development of an identity based on a cleaving of her Self, often projected in repeated drawings of the ‘little mermaid’. Sarah underwent four years of psychoanalytical psychotherapy, initiated in the sequence of marked complaints concerning socialization problems with her peers and school phobia. After a one-year interruption, Sarah resumed therapy reactively electing a symptom linked to anorectic behaviours and a refusal to grow up and which concealed a means of enacting some familial power, and through rescuing her ‘lost identity’ established a place that was duly hers in the family nucleus. The ruthlessness and the obsessive nature of her anorectic behaviour, assumed as a means of control, had materialized into a vicious sadomasochist circle (she controlled herself so as to be free from control, but ended up being controlled as a result of that very self-control). Such behavior resulted in her being committed to a psychiatric institution on three separate occasions, due to manifest and already life-threatening weight loss. It was the therapist’s responsibility to rescue and preserve the healthy part of Sarah’s Self-revealed in the course of the therapy sessions, in stark opposition to the other pathological and cleaved Self that presented during her institutionalization. Through psychotherapeutic relational attachment, the healthy and salubrious parts of her Self (those which both possess and induce health) have allowed for the structuring of a new relational object, thus consenting to the ‘sealing of the identity cleft’ and the development of her personality.