A Prospective Study of Extreme Weight Change Behaviors Among Adolescent Boys and Girls

This study examined changes in extreme weight change attitudes and behaviors (exercise dependence, food supplements, drive for thinness, bulimia) among adolescent boys and girls over a 16 month period. It also investigated the impact of body mass index, puberty, body image, depression and positive affect on these attitudes and behaviors 16 months later. The participants were 847 young adolescents (411 boys, 436 girls). Participants completed questionnaires evaluating the above variables on three occasions, eight months apart. Girls obtained higher scores on exercise dependence, drive for thinness and bulimia. Changes in depression and body image importance were the strongest predictors of changes in these extreme attitudes and behaviors among boys; changes in depression, body dissatisfaction and body image importance were the strongest predictors for girls. The need for gender specific educational and intervention programs for adolescents are discussed.Marita McCabe PhD, Professor in Psychology in the School of Psychology, Deakin University, Melbourne, Australia. She has completed her PhD in 1981 on adolescent development, and has been completing research on various aspects of adolescent adjustment for 30 years. To whom correspondence should be addressed at 221 Burwood Highway, Burwood, Victoria 3125, Australia;Senior Lecturer in the School of Psychology, Deakin University, Melbourne Australia. She completed her PhD in 1990 on Childrens Language Development. In the last 10 years she has been researching body image concerns in adolescents and children     

Methods for the analysis of hard dental tissues exposed to high temperatures

The preservation of teeth that have been exposed to a heat source is a key factor in order to keep their value as evidence. This research paper presents some methods under development for the analysis of dental evidence after exposure to high temperatures; it also establishes age related alterations of young and aged teeth which have been exposed to direct heat. A total of thirty permanent healthy teeth (young=15 and old=15) were submitted to direct heat (n=14) and to a controlled raise of temperature (n=16); they were embedded in polymethylmetacrilate. For the macroscopic study, blocks were cut in half, polished and their surfaces were digitalized. Subsequently, blocks were put in slides, worn away and observed through a photomicroscope. The study of the colorimetric pattern was done by Corel Photo Paint 12.0 and Image J. software. All teeth submitted to the gradual raise of temperature presented a degree of structural damage lower than those exposed to direct heat. The internal surface of young teeth exposed to direct heat showed lines of fracture oblique to the long axis of the tooth; in contrast, a reticular pattern was observed on aged teeth. All teeth exposed to direct heat showed some matte-black coloration areas, while those submitted to a gradual increment of temperature showed a greyish colour in the enamel and a chalky-white in the cementum. By using both thermal treatments in young teeth, the amelodentinal junction was lost, thus preserving the integrity of each tissue. In aged teeth, the separation of this junction was produced because of the breakdown of the dentine. Microscopically, in teeth exposed to direct heat, it was neither possible to differentiate the dentin from the cementum, nor to distinguish the incremental lines of the latter; while in those submitted to a controlled increment of temperature, the corresponding morphology in the tissues was observed. A significant statistical difference was obtained for black colour among young and aged teeth exposed to direct heat, as well as among the means of all colours obtained from the teeth exposed to both treatments. The structural changes observed allow locating a tooth in the studied age groups. Our results show the viability of the applied method for the processing of samples, allowing their preservation as evidence during an indefinite time.     

Introduction of Mandatory Vehicle Inspection and Its Impact on Health: Case of Georgia

Abstract

To fight atmospheric air pollution, the Georgian government has implemented a law about vehicle inspection. The aim of this survey is to determine under which conditions are owners of technically faulty vehicles ready to give up using technically faulty cars. Within the qualitative study the in-depth interviews were conducted. Taxi drivers think that this law is harmful to them though they appreciate the efficacy of vehicle inspections. Controls should be placed on the quality of fuel as part of the development of public transport while increasing awareness about the harmful effects of atmospheric air pollution.     

ʽYou’re not getting rid of usʼ. Performing acts of citizenship in times of emigration

This article uses academic literature on acts of citizenship and performative citizenship to investigate the contestation, protest, and resistance actions carried out by the Marea Granate collective in defence of the citizenship rights of Spanish citizens living abroad. Marea Granate (Maroon Wave) is a transnational network of young Spanish emigrants that emerged in 2013 as a result of the recent widespread emigration provoked by the economic crisis and austerity politics in Spain. Based on their shared identity as economic exiles and demanding the right to participate in Spanish political life to change the conditions that led them to emigrate, the members of this organization have been carrying out innovative, creative citizenship acts that are breaking conventions and causing ruptures in the Spanish citizenship regime. These ‘transformative acts of recovering’, the term used to refer to Marea Granate’s demands and struggles for citizenship, have proven to be capable of being a driving force for change and also reveal the fluid and contested nature of citizenship in the contexts of austerity and emigration.     

Accuracy of 3D Scanners in Tooth Mark Analysis

The objective of this study was to compare the accuracy of contact and laser 3D scanners in tooth mark analysis. Ten dental casts were scanned with both 3D scanners. Seven linear measurements were made from the 3D images of dental casts and biting edges generated with DentalPrint© software (University of Granada, Granada, Spain). The uncertainty value for contact 3D scanning was 0.833 for the upper dental cast and 0.660 mm for the lower cast; similar uncertainty values were found for 3D-laser scanning. Slightly higher uncertainty values were obtained for the 3D biting edges generated. The uncertainty values for single measurements ranged from 0.1 to 0.3 mm with the exception of the intercanine distance, in which higher values were obtained. Knowledge of the error rate in the 3D scanning of dental casts and biting edges is especially relevant to be applied in practical forensic cases.     

Out of Sight,Out of Mind? External Voting and the Political Representation of Portuguese Emigrants

Over recent decades, emigrants have gained expanded voting rights on a global scale. Despite the normative debates about this issue, there are few empirical studies on why states decide to implement external voting and how electoral systems perform. This article seeks to fill this gap by looking at the Portuguese case. Our study suggests that a combination of political and socio-economic factors explains the implementation of external voting. On the other hand, the interests of political parties and the low level of civil society engagement are key to determining the failure of electoral reforms and the attempts to overcome the shortcomings of external voting.     

Confirmation by LC–MS of drugs in oral fluid obtained from roadside testing

The aim of this study was to assess the effectiveness of two current on-site oral fluid (OF) drug detection devices (OraLab and Dräger), as part of the Spanish participation in the Roadside Testing Assessment Project (ROSITA Project). The study was done in collaboration with the Spanish Traffic Police, in Galicia (NW Spain), during 2004 and 2005. A total of 468 drivers selected at the police controls agreed to participate through informed consent. In addition, saliva samples were collected and sent to the laboratory to confirm the on-site results. For this purpose, two different analytical liquid chromatography–mass spectrometry (LC–MS) methods were used to detect 11 drugs or metabolites in a 300 μL sample. Simultaneous analysis of morphine, 6-acetylmorphine, amphetamine, methamphetamine, MDA, MDMA, MDEA, MBDB, cocaine and benzoylecgonine was carried out using 100 μL of oral fluid, after an automated solid phase extraction. A different LC–MS method was performed to detect Δ⁹-THC in 200 μL of oral fluid using liquid–liquid extraction with hexane at pH 6. Both methods were fully validated, including linearity (1–250 ng/mL, 2–250 ng/mL) recovery (>50%), within-day and between-day precision (CV < 15%), accuracy (mean relative error < 15%), limit of detection (0.5 and 1 ng/mL), quantitation (1 and 2 ng/mL) and matrix effect. All of the positive cases and a random selection of 30% of the negatives were analyzed for confirmation analysis. Good results (sensitivity, specificity, accuracy, positive predictive value and negative predictive value > 90%) were obtained for cocaine and opiates by OraLab, and for cocaine by Dräger. However, the results for the other compounds could be improved for both detection devices. Differences in the ease of use and in the interpretation mode (visual or instrumental) were observed.     

The Impact of Affirmative Action on the Employment of Minorities and Women: A Longitudinal Analysis Using Three Decades of EEO‐1 Filings

What role has affirmative action played in the growth of minority and female employment in U.S. firms? This paper presents a longitudinal analysis of this question by exploiting rich variation across firms in the timing of federal contracting to identify affirmative action effects over the course of three decades spanning 1973 to 2003. It constitutes the first study to comprehensively document the long‐term and dynamic effects of affirmative action in federal contracting on employment composition within firms in the United States. I use a new panel of over 100,000 large private‐sector firms from the U.S. Equal Employment Opportunity Commission, including both firms that obtain federal contracts and are therefore mandated to implement affirmative action and firms that are noncontractors, across all industries and regions. The paper's key results indicate that the primary beneficiaries of affirmative action in federal contracting over 1973 to 2003 were black and Native American women and men. Dynamic event study analysis of workforce composition around the time of contracting reveals that a large part of the effect of affirmative action on increasing protected group shares occurred within the first four years of gaining a contract, and that these increased shares persisted even after a firm was no longer a federal contractor. The paper also uncovers important results on how the impact of affirmative action evolved over 1973 to 2003, in particular that the fastest growth in the employment shares of minorities and women at federal contractors relative to noncontracting firms occurred during the 1970s and early 1980s, decelerating substantially in ensuing years.