64 research outputs found

    Large Softly broken N=2 QCD

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    We analyze the possible soft breaking of N=2N=2 supersymmetric Yang-Mills theory with and without matter flavour preserving the analyticity properties of the Seiberg-Witten solution. For small supersymmetry breaking parameter with respect to the dynamical scale of the theory we obtain an exact expression for the effective potential. We describe in detail the onset of the confinement transition and some of the patterns of chiral symmetry breaking. If we extrapolate the results to the limit where supersymmetry decouples, we obtain hints indicating that perhaps a description of the QCD vacuum will require the use of Lagrangians containing simultaneously mutually non-local degrees of freedom (monopoles and dyons).Comment: 40 pages, LaTeX, 13 figures, uses epsf.st

    Brief alcohol interventions: Do counsellors' and patients' communication characteristics predict change?

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    Aims: To identify communication characteristics of patients and counsellors during brief alcohol intervention (BAI) which predict changes in alcohol consumption 12 months later. Methods: Tape-recordings of 97 BAI sessions with hazardous drinkers were analysed using the Motivational Interviewing Skill Code (MISC). Outcome measures were (i) baseline to a 12-month difference in the weekly drinking quantity, and (ii) baseline to a 12-month difference in heavy drinking episodes per month. Bivariate analyses were conducted for all MISC measures, and significant variables were included in multiple linear regression models. Results: Patient communication characteristics (ability to change) during BAI significantly predicted the weekly drinking quantity in the multiple linear regression model. There were significant differences for some of the counsellor skills in bivariate analyses but not in the multiple regression model adjusting for patients' talk characteristics. Changes in heavy drinking showed no significant association with patient or counsellor skills in the multiple linear regression model. Conclusion: Findings indicate that the more the patient expresses ability to change during the intervention, the more weekly alcohol use decreases. The role of the counsellor during the interaction, and influence on the outcomes was not clearly established. Implications for BAI and related research are discusse

    Mechanisms of action of brief alcohol interventions remain largely unknown - a narrative review.

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    A growing body of evidence has shown the efficacy of brief intervention (BI) for hazardous and harmful alcohol use in primary health care settings. Evidence for efficacy in other settings and effectiveness when implemented at larger scale are disappointing. Indeed, BI comprises varying content; exploring BI content and mechanisms of action may be a promising way to enhance efficacy and effectiveness. Medline and PsychInfo, as well as references of retrieved publications were searched for original research or review on active ingredients (components or mechanisms) of face-to-face BIs [and its subtypes, including brief advice and brief motivational interviewing (BMI)] for alcohol. Overall, BI active ingredients have been scarcely investigated, almost only within BMI, and mostly among patients in the emergency room, young adults, and US college students. This body of research has shown that personalized feedback may be an effective component; specific MI techniques showed mixed findings; decisional balance findings tended to suggest a potential detrimental effect; while change plan exercises, advice to reduce or stop drinking, presenting alternative change options, and moderation strategies are promising but need further study. Client change talk is a potential mediator of BMI effects; change in norm perceptions and enhanced discrepancy between current behavior and broader life goals and values have received preliminary support; readiness to change was only partially supported as a mediator; while enhanced awareness of drinking, perceived risks/benefits of alcohol use, alcohol treatment seeking, and self-efficacy were seldom studied and have as yet found no significant support as such. Research is obviously limited and has provided no clear and consistent evidence on the mechanisms of alcohol BI. How BI achieves the effects seen in randomized trials remains mostly unknown and should be investigated to inform the development of more effective interventions

    Perception of the Amount of Drinking by Others in A Sample of 20-Year-Old Men: The More I Think You Drink, The More I Drink

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    Background: The amount a person drinks can be influenced by their perception of drinking by others. Aim: We studied whether perception of the amount of drinking by others (same age and sex) is associated with one's own current drinking, and the factors that are related to this perception. Methods: A random sample of drinkers (n=404) from a census of 20-year-old Swiss men (n=9686) estimated the percentage of others who drink more than they do. Using weekly alcohol consumption data of the census, we computed for each subject the percentage of individuals drinking more than they do. We compared the ‘perceived' to the ‘computed' percentage and classified the drinkers as overestimating or not drinking by others. We compared the alcohol consumption of those who overestimated drinking by others to those who did not, using analyses of variance/covariance. We used logistic regression models to evaluate the impact of age, education level, occupation, living environment and family history of alcohol problems on estimations of drinking by others. Results: Among the 404 drinkers, the mean (SD) number of drinks/week was 7.95(9.79); 45.5% overestimated drinking by others, while 35.2% underestimated it and 19.3% made an accurate estimation. The likelihood of overestimating increased as individual alcohol use increased. Those overestimating consumed more alcohol than those who did not; the adjusted mean number of drinks/week (SE) 11.45 (1.12) versus 4.50 (1.08), P<0.0001. Except for current drinking, no other variables were significantly associated with overestimating. Conclusion: This study confirms prior findings within selective student populations. It sets the stage for preventive actions, such as normative feedback based on social norms theor

    Who Drinks Most of the Total Alcohol in Young Men—Risky Single Occasion Drinking as Normative Behaviour

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    Aims: The objectives of this study were to analyse (a) the distribution of risky single-occasion drinking (RSOD) among 19-year-old men in Switzerland and (b) to show the percentage of all alcohol consumption in the form of RSOD. Methods: The study was based on a census of Swiss francophone 19-year-old men consecutively reporting for processing. The study was conducted at Army Recruitment Center. The participants were 4116 recruits consecutively enrolling for mandatory army recruitment procedures between 23 January and 29 August in 2007. The measures were alcohol consumption measured in drinks of ∼10 g of pure alcohol, number of drinking occasions with six or more drinks (RSOD) in the past 12 months and a retrospective 1 week drinking diary. Results: 264 recruits were never seen by the research staff, 3536 of the remaining 3852 conscripts completed a questionnaire which showed that 7.2% abstained from alcohol and 75.5% of those drinking had an RSOD day at least monthly. The typical frequency of drinking was 1-3 days per week on weekends. The average quantity on weekends was about seven drinks, 69.3% of the total weekly consumption was in the form of RSOD days, and of all the alcohol consumed, 96.2% was by drinkers who had RSOD days at least once a month. Conclusion: Among young men, RSOD constitutes the norm. Prevention consequently must address the total population and not only high-risk drinker

    Projet NoBaby : Apprentissage de la conception/réalisation de produits en mode projet

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    L'Institut Supérieur d'ingénieur de Franche-Comté est une jeune école d'ingénieurs spécialisée dans le génie biomédical. Les étudiants recrutés viennent d'horizons et de cultures scientifique et technique très différents. Dans le cadre des enseignements de construction mécanique, on propose de concevoir et réaliser un système mécanique. Les étudiants doivent concevoir un prototype fonctionnel du produit. Il est ensuite réalisé par prototypage rapide. On propose ici de donner la structuration pédagogique de ce type de projet et des démarches à suivre

    Serial mediation analysis of treatment-specific processes in two contrasting alcohol treatments

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    This study explored whether treatment-specific processes linking therapist behaviors, post-session client ratings, and 3-month proximal outcomes (i.e., end of treatment) can explain 12-month outcomes for two contrasting alcohol treatment conditions with equivalent overall outcomes. This study is a secondary analysis of the UK Alcohol Treatment Trial (UKATT), a multi-center randomized controlled trial of treatment for alcohol problems comparing 3-session motivational enhancement therapy (MET) to 8-session social behaviour and network therapy (SBNT). Among 742 adult clients included in UKATT, 351 had one treatment session recorded and coded and were followed-up 3 and 12 months after baseline. The study team conducted serial mediation analyses to test whether the frequency and quality of MET and SBNT skills were related to 12-month alcohol outcomes (drinks per drinking day) through postsession client ratings of treatment progress (Processes of Change Questionnaire, PCQ), readiness to change (RTC) and social support for drinking after 3-months. Higher quality of MET skills was related to higher PCQ scores, which were in turn related to greater post-treatment RTC, and subsequently to better alcohol outcomes. Total indirect effect was consistently significant. In contrast, only PCQ was predictive of treatment outcome in the SBNT portion of the model. This study provides evidence from a large pragmatic trial that the quality of MET skills positively influences alcohol outcomes in part through improvements in motivation during treatment and actively trying to change when treatment ends. Research should explore the ways in which SBNT secured outcomes that were equivalent to MET. [Abstract copyright: Copyright © 2022. Published by Elsevier Inc.

    Who benefits from brief motivational intervention among young adults presenting to the emergency department with alcohol intoxication : A latent-class moderation analysis

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    Background: Research has not identified which patients optimally benefit from brief Motivational Interviewing (bMI) for heavy drinking when delivered to young adults in the Emergency Department (ED). Methods: We conducted secondary analyses of data from a randomized controlled trial in which 344 young adults (18–35 years) presenting to the ED with alcohol intoxication received either bMI or Brief Advice (BA, control group). We used Latent Class Analysis to derive participants' profiles from baseline characteristics (i.e., sex, age, severity of alcohol use disorder, attribution of ED admission to alcohol use, importance, and confidence to change, cognitive discrepancy, anxiety, depression, and trait reactance). We then conducted a moderation analysis to assess the number of heavy drinking days at short-term (1-month) and long-term (12-month) follow-up using negative binomial regressions with interactions between the intervention and derived classes. Results: Fit statistics indicated that a 4-class solution best fit the data. Class 3 (high severity, importance and discrepancy, and low confidence and anxiety) benefitted more from bMI than BA at short- and long-term follow-up than Class 1 (younger; lowest severity, importance, discrepancy, reactance, anxiety and depression, and highest confidence). Class 2 (older; highest severity, importance, discrepancy, reactance, anxiety and depression, and lowest confidence) also benefitted more from bMI than BA than did Class 1 at short-term follow-up. In these significant contrasts, Class 1 benefitted more from BA than bMI. There were no significant interactions involving Class 4 (more likely to be women; low severity; high levels of anxiety, depression, and reactance). Conclusions: This study identified the patient profiles that benefitted more from bMI than BA among nontreatment-seeking young adults who present intoxicated to the ED. The findings have implications for intervention design and argue for the importance of research aimed at developing intervention content tailored to patient profiles

    Mediational Analyses of the Effects of Social Behaviour and Network Therapy on Alcohol Use

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    INTRODUCTION: Social behaviour and network therapy involves an active participation of the practitioner in recruiting a supportive network to change the client's alcohol use. Despite achieving beneficial effects on alcohol consumption, its possible mechanisms of change are a relatively under-studied topic compared to those of other alcohol treatment interventions. This study aimed to explore therapist skills through which social behaviour and network therapy may achieve effects on alcohol consumption in comparison with motivational enhancement therapy. METHODS: This study was secondary analysis of data from the UK Alcohol Treatment Trial, a multicentre, pragmatic, randomized controlled trial. The sample comprised 376 participants randomized to motivational enhancement therapy or social behaviour and network therapy. We used the UK Alcohol Treatment Trial Process Rating Scale to assess therapist skills. Outcomes drinks per drinking day and percentage of days abstinent were assessed 12 months after treatment initiation. Analyses were conducted in a simple mediation framework. RESULTS: Therapist skills score (combining frequency and quality) for involving others in behaviour change mediated social behaviour and network therapy effects on percentage of days abstinent (b = 0.06, 95% CI: 0.02; 0.10, p = 0.01). The frequency with which therapists acted as an active agent for change also mediated the effects of social behaviour and network therapy on percentage of days abstinent (b = 0.03, 95% CI: 0.003; 0.05, p = 0.03). The frequency with which the therapist stressed social support as a key factor in achieving change unexpectedly mediated an increase in drinks per drinking day (b = 0.10, 95% CI: 0.01; 0.18, p = 0.02). The two latter mediation effects were not sustained when quality was considered. All other indirect effects tested were non-significant. DISCUSSION/CONCLUSIONS: How social behaviour and network therapy exerts effects on alcohol outcomes is not yet well understood and in this study was not attributable to observed ratings of therapist treatment-specific skills. Therapist skill in planning the involvement of others during treatment, however, warrants further study. We suggest that the present findings should be regarded as hypothesis generating as it identifies specific targets for further investigation in alcohol treatment process studies
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