Tracking and political engagement: an investigation of the mechanisms driving the effect of educational tracking on voting intentions among upper secondary students in France

Many scholars argue that the practice of educational tracking exerts a distinct effect on young people’s political engagement. They point out that students in academic tracks are becoming more politically engaged than those than those in vocational ones, and suggest that this may be due to differences across tracks in the curriculum, pedagogy, peer environment or student self-confidence. The current paper aims to investigate whether tracking is related to political engagement through any of these four mechanisms. It uses survey data collected among students in the final year of upper secondary education in France and employs a stepwise multilevel analysis to explore this question. It finds little differences between tracks in the curriculum and in pedagogy relevant for political engagement. Students in academic tracks nonetheless express a stronger commitment to vote than those in vocational ones. This difference between tracks disappears when the social composition of the school population is taken into account, suggesting that the peer environment is the primary mechanism driving the effect of tracking in France. However, in contexts with greater variation between the tracks in curriculum and pedagogy, the latter may well be equally or more important mechanisms

The Jacobi Polynomials QCD analysis for the polarized structure function

We present the results of our QCD analysis for polarized quark distribution and structure function $xg_1 (x,Q^2)$. We use very recently experimental data to parameterize our model. New parameterizations are derived for the quark and gluon distributions for the kinematic range $x \epsilon [10^{-8},1]$, $Q^2 \epsilon [1,10^6]$ GeV^2. The analysis is based on the Jacobi polynomials expansion of the polarized structure functions. Our calculations for polarized parton distribution functions based on the Jacobi polynomials method are in good agreement with the other theoretical models. The values of $\Lambda_{QCD}$ and $\alpha_s(M_z)$ are determined.Comment: 23 pages, 8 figures and 4 table

DAS Writeback: A Collaborative Annotation System

<p>Abstract</p> <p>Background</p> <p>Centralised resources such as GenBank and UniProt are perfect examples of the major international efforts that have been made to integrate and share biological information. However, additional data that adds value to these resources needs a simple and rapid route to public access. The Distributed Annotation System (DAS) provides an adequate environment to integrate genomic and proteomic information from multiple sources, making this information accessible to the community. DAS offers a way to distribute and access information but it does not provide domain experts with the mechanisms to participate in the curation process of the available biological entities and their annotations.</p> <p>Results</p> <p>We designed and developed a Collaborative Annotation System for proteins called DAS Writeback. DAS writeback is a protocol extension of DAS to provide the functionalities of adding, editing and deleting annotations. We implemented this new specification as extensions of both a DAS server and a DAS client. The architecture was designed with the involvement of the DAS community and it was improved after performing usability experiments emulating a real annotation task.</p> <p>Conclusions</p> <p>We demonstrate that DAS Writeback is effective, usable and will provide the appropriate environment for the creation and evolution of community protein annotation.</p

Undesirable events during electronic cigarette use prior to the implementation of Article 20 of the European Union Tobacco Products Directive: Findings from the EUREST-PLUS ITC Europe Surveys

Introduction: Article 20 of the European Union (EU) Tobacco Products Directive (TPD) sets forth provisions on electronic cigarette (e-cigarette) product regulation, such as child-proof packaging and protection against e-liquid refilling without leakage. The aim of the current study was to examine frequencies and correlates of experiencing undesirable events during e-cigarette use related to e-cigarette product design parameters prior to the implementation of the EU TPD. Material and Methods: The EUREST-PLUS ITC Europe Wave 1 survey was conducted with adult cigarette smokers from June to September 2016 across Germany, Greece, Hungary, Poland, Romania, Spain. Results: Among our sample of adult cigarette smokers, one in five reported having ever used e-cigarettes. Prevalence of current e-cigarette use (daily or weekly) was very low (1.5%). Major undesirable events, such as battery exploding or catching fire (1.9%) or overheating (11%) were uncommon. Among those reporting at least monthly use and whose usual/current brand has a tank that you fill with liquids, 18.8% experienced spilling during refill and 18.5% experienced e-liquid leaking during use. Nearly one-quarter reported that the e-liquid cap was easy for a child to open. Conclusions: In light of the EU TPD establishing standards around e-cigarette design parameters to mitigate undesirable events and risks during e-cigarette use, these findings further support the need for its implementation, as well as for monitoring undesirable events experienced during e-cigarette use once Article 20 is fully implemented

Lill-kelb

Ġabra ta’ poeżiji u proża li tinkludi: Kemm hu kbir il-amar t’Alla! ta’ R. M. B. – Liż-żahrija ta’ V. M. B. – Il-Ġilju u l-warda ta’ P. P. M. B. – Sika trid tiżżewweġ.... ta’ R. M. B. – Qassis ġdid ta’ Dun Karm – Mhux dejjem tiġi żewġ ta’ T. Z. – Il-bandiera tagħna ta’ Mons. Gauci – Il-ħalliel tal-mejtin ta’ N. Biancardi – Lill-kelb ta’ Dun Karm.N/

European adult smokers' perceptions of the harmfulness of e-cigarettes relative to combustible cigarettes: cohort findings from the 2016 and 2018 EUREST-PLUS ITC Europe Surveys

Background: This study presents perceptions of the harmfulness of electronic cigarettes (e-cigarettes) relative to combustible cigarettes among smokers from six European Union (EU) countries, prior to the implementation of the EU Tobacco Products Directive (TPD), and 2 years post-TPD. Methods: Data were drawn from the EUREST-PLUS ITC Europe Surveys, a cohort study of adult smokers (>= 18 years) from Germany, Greece, Hungary, Poland, Romania and Spain. Data were collected in 2016 (pre-TPD: N = 6011) and 2018 (post-TPD: N = 6027). Weighted generalized estimating equations were used to estimate perceptions of the harmfulness of e-cigarettes compared to combustible cigarettes (less harmful, equally harmful, more harmful or 'don't know'). Results: In 2016, among respondents who were aware of e-cigarettes (72.2%), 28.6% reported that they perceived e-cigarettes to be less harmful than cigarettes (range 22.0% in Spain to 34.1% in Hungary). In 2018, 72.2% of respondents were aware of e-cigarettes, of whom 28.4% reported perceiving that e-cigarettes are less harmful. The majority of respondents perceived e-cigarettes to be equally or more harmful than cigarettes in both 2016 (58.5%) and 2018 (61.8%, P>0.05). Overall, there were no significant changes in the perceptions that e-cigarettes are less, equally or more harmful than cigarettes, but 'don't know' responses significantly decreased from 12.9% to 9.8% (P = 0.036). The only significant change within countries was a decrease in 'don't know' responses in Spain (19.3-9.4%, P = .001). Conclusions: The majority of respondents in these six EU countries perceived e-cigarettes to be equally or more harmful than combustible cigarettes

Perceptions, Predictors of and Motivation for Quitting among Smokers from Six European Countries from 2016 to 2018: Findings from EUREST-PLUS ITC Europe Surveys

The European Tobacco Products Directive (TPD) was introduced in 2016 in an effort to decrease prevalence of smoking and increase cessation in the European Union (EU). This study aimed to explore quitting behaviours, motivation, reasons and perceptions about quitting, as well as predictors (reported before the TPD implementation) associated with post-TPD quit status. A cohort study was conducted involving adult smokers from six EU countries (n= 3195). Data collection occurred pre-(Wave 1; 2016) and post-(Wave 2; 2018) TPD implementation. Bivariate and logistic regression analyses of weighted data were conducted. Within this cohort sample, 415 (13.0%) respondents reported quitting at Wave 2. Predictors of quitting were moderate or high education, fewer cigarettes smoked per day at baseline, a past quit attempt, lower level of perceived addiction, plans for quitting and the presence of a smoking-related comorbidity. Health concerns, price of cigarettes and being a good example for children were among the most important reasons that predicted being a quitter at Wave 2. Our findings show that the factors influencing decisions about quitting may be shared among European countries. European policy and the revised version of TPD could emphasise these factors through health warnings and/or campaigns and other policies

The glutathione biosynthetic pathway of Plasmodium is essential for mosquito transmission

1Infection of red blood cells (RBC) subjects the malaria parasite to oxidative stress. Therefore, efficient antioxidant and redox systems are required to prevent damage by reactive oxygen species. Plasmodium spp. have thioredoxin and glutathione (GSH) systems that are thought to play a major role as antioxidants during blood stage infection. In this report, we analyzed a critical component of the GSH biosynthesis pathway using reverse genetics. Plasmodium berghei parasites lacking expression of gamma-glutamylcysteine synthetase (γ-GCS), the rate limiting enzyme in de novo synthesis of GSH, were generated through targeted gene disruption thus demonstrating, quite unexpectedly, that γ-GCS is not essential for blood stage development. Despite a significant reduction in GSH levels, blood stage forms of pbggcs− parasites showed only a defect in growth as compared to wild type. In contrast, a dramatic effect on development of the parasites in the mosquito was observed. Infection of mosquitoes with pbggcs− parasites resulted in reduced numbers of stunted oocysts that did not produce sporozoites. These results have important implications for the design of drugs aiming at interfering with the GSH redox-system in blood stages and demonstrate that de novo synthesis of GSH is pivotal for development of Plasmodium in the mosquito

Cigarette brand loyalty among smokers in six European countries - findings from the EUREST-PLUS ITC Survey

INTRODUCTION This study aims to describe the degree of smokers' loyalty to a specific brand of tobacco products and the variables related to choosing a specific brand among smokers in six European countries. METHODS A cross-sectional analysis was conducted for a representative sample of adult smokers from Germany, Greece, Hungary, Poland, Romania, and Spain (approximately 1000 smokers per country). The prevalence of smokers' having a usual brand of cigarettes smoked (factory-made or roll-your-own cigarettes), the brand of choice, the factors for choosing a specific brand and the degree of loyalty to that brand (not at all, a little, somewhat and a lot) were assessed by country, sociodemographics and smoking-related variables. RESULTS In total, 86.6% of the smokers reported having a usual brand. In three out of the six countries, one brand holds the loyalty of between 17.8% and 24.5% of the smokers that reported having a usual brand for factory-made cigarettes. Most participants reported being loyal 'a lot' to their brand of choice (44.4%). The reasons most reported for choosing a cigarette brand were the taste (83.2%) and the price (51.7%). CONCLUSIONS Brand loyalty is high among factory-made and roll-your-own cigarette smokers in six European countries. Future research on longitudinal trends of brand loyalty to evaluate the effect of tobacco control policies in these European countries is warranted