Jet Veto Clustering Logarithms Beyond Leading Order

Many experimental analyses separate events into exclusive jet bins, using a jet algorithm to cluster the final state and then veto on jets. Jet clustering induces logarithmic dependence on the jet radius R in the cross section for exclusive jet bins, a dependence that is poorly controlled due to the non-global nature of the clustering. At jet radii of experimental interest, the leading order (LO) clustering effects are numerically significant, but the higher order effects are currently unknown. We rectify this situation by calculating the most important part of the next-to-leading order (NLO) clustering logarithms of R for any 0-jet process, which enter as $O(\alpha_s^3)$ corrections to the cross section. The calculation blends subtraction methods for NLO calculations with factorization properties of QCD and soft-collinear effective theory (SCET). We compare the size of the known LO and new NLO clustering logarithms and find that the impact of the NLO terms on the 0-jet cross section in Higgs production is small. This brings clustering effects under better control and may be used to improve uncertainty estimates on cross sections with a jet veto.Comment: 39 pages, 5 figures. v2: journal version. v3: added missing term in calculation, conclusions unchange

Which sexual abuse victims receive a forensic medical examination? : The impact of Children\u27s Advocacy Centers

Abstract Objective This study examines the impact of Children\u27s Advocacy Centers (CAC) and other factors, such as the child\u27s age, alleged penetration, and injury on the use of forensic medical examinations as part of the response to reported child sexual abuse. Methods This analysis is part of a quasi-experimental study, the Multi-Site Evaluation of Children\u27s Advocacy Centers, which evaluated four CACs relative to within-state non-CAC comparison communities. Case abstractors collected data on forensic medical exams in 1,220 child sexual abuse cases through review of case records. Results Suspected sexual abuse victims at CACs were two times more likely to have forensic medical examinations than those seen at comparison communities, controlling for other variables. Girls, children with reported penetration, victims who were physically injured while being abused, White victims, and younger children were more likely to have exams, controlling for other variables. Non-penetration cases at CACs were four times more likely to receive exams as compared to those in comparison communities. About half of exams were conducted the same day as the reported abuse in both CAC and comparison communities. The majority of caregivers were very satisfied with the medical professional. Receipt of a medical exam was not associated with offenders being charged. Conclusions Results of this study suggest that CACs are an effective tool for furthering access to forensic medical examinations for child sexual abuse victims

Drell-Yan Production at NNLL'+NNLO Matched to Parton Showers

We present results for Drell-Yan production from the GENEVA Monte-Carlo framework. We combine the fully-differential NNLO calculation with higher-order resummation in the 0-jettiness resolution variable. The resulting parton-level events are further combined with parton showering and hadronization provided by PYTHIA8. The 0-jettiness resummation is carried out to NNLL', which consistently incorporates all singular virtual and real NNLO corrections. It thus provides a natural perturbative connection between the NNLO calculation and the parton shower regime, including a systematic assessment of perturbative uncertainties. In this way, inclusive observables are correct to NNLO, up to small power corrections in the resolution cutoff. Furthermore, the perturbative accuracy of 0-jet-like resummation variables is significantly improved beyond the parton shower approximation. We provide comparisons with LHC measurements of Drell-Yan production at 7 TeV from ATLAS, CMS, and LHCb. As already observed in $e^+e^-$ collisions, for resummation-sensitive observables, the agreement with data is noticeably improved by using a lower value of $\alpha_s(M_Z) = 0.1135$.Comment: 26 pages, 20 figure

Do Children\u27s Advocacy Centers improve families’ experiences of child sexual abuse investigations?

Abstract Objective The Children\u27s Advocacy Center (CAC) model of child abuse investigation is designed to be more child and family-friendly than traditional methods, but there have been no rigorous studies of their effect on children\u27s and caregivers’ experience. Data collected as part of the Multi-Site Evaluation of Children\u27s Advocacy Centers were used to examine whether CACs improve caregivers’ and children\u27s satisfaction with investigations. Methods Nonoffending caregiver and child satisfaction were assessed during research interviews, including the administration of a 14-item Investigation Satisfaction Scale (ISS) for caregivers. Two hundred and twenty-nine sexual abuse cases investigated through a CAC were compared to 55 cases investigated in communities with no CAC. Results Hierarchical linear regression results indicated that caregivers in CAC cases were more satisfied with the investigation than those from comparison sites, even after controlling for a number of relevant variables. There were few differences between CAC and comparison samples on children\u27s satisfaction. Children described moderate to high satisfaction with the investigation, while a minority expressed concerns about their experience. Conclusions The CAC model shows promise for improving families’ experiences, but to build upon this promise, agencies will need to systematize procedures for refining and adapting the model as new research becomes available

Strategic Spatial Planning in European City-Regions: Parallel Processes or Divergent Trajectories? (NIRSA) Working Paper Series No. 60

Drawing on recent experiences of strategic spatial planning in two city-regions in Europe, the paper seeks to challenge dominant narratives of the emergence of strategic spatial planning as a uni-dimensional process of policy convergence. Recognising a need for fine-grained analysis of practices of spatial planning in diverse territorial and institutional contexts, the paper presents a framework for contextualised comparative analysis, identifying multiple levels of differentiation. The application of this comparative framework is subsequently illustrated with reference to the two city-regions of Dublin and Erfurt. The paper concludes with an outline of an agenda for further research

Strategic Spatial Planning in European City-Regions: Parallel Processes or Divergent Trajectories? (NIRSA) Working Paper Series No. 60

Drawing on recent experiences of strategic spatial planning in two city-regions in Europe, the paper seeks to challenge dominant narratives of the emergence of strategic spatial planning as a uni-dimensional process of policy convergence. Recognising a need for fine-grained analysis of practices of spatial planning in diverse territorial and institutional contexts, the paper presents a framework for contextualised comparative analysis, identifying multiple levels of differentiation. The application of this comparative framework is subsequently illustrated with reference to the two city-regions of Dublin and Erfurt. The paper concludes with an outline of an agenda for further research

What is the Effect of Frequent Basic Life Support Refresher Sessions on Health Care Professionals’ Retention of Cardiopulmonary Resuscitation Skills? A Systematic Review

Abbreviations: AED, Automated External Defibrillator; AHA, American Heart Association; BLS, Basic Life Support; CPR, Cardiopulmonary Resuscitation; EBL, Evidence Based Librarianship; IDG, Instructor Directed Group; NHMRC, National Health and Medical Research Council; PRISMA, Preferred Reporting Items for Systematic Reviews and Meta- Analyses; RCT, Randomised Control Trial; RFST, Repetitive Sessions of Formative Self Testing; RFSTAP, Repetitive Sessions of Formative Self Testing with Additional Practice ROSC, Return of Spontaneous Circulation; SDG, Student Directed Group. Abstract Background: Cardiopulmonary resuscitation training is currently provided to health care professionals at biannual intervals to meet mandatory recertification in accordance with guidelines.  However, literature reports that resuscitation skills decline rapidly and sometimes long before recertification. Inadequate CPR may result in a decrease in the incidence of achieving return of spontaneous circulation and other devastating outcomes. Good quality training and education in cardiopulmonary resuscitation is paramount to patient survival. Brief refresher sessions may prevent skill decay among health care professionals, improving skill retention over time and improving patient outcomes. Objective: The aim of this systematic review is to determine the effect of frequent basic life support refresher sessions on health care professionals’ retention of cardiopulmonary resuscitation skills. Methods: A systematic review using narrative analysis was completed.  A database search was conducted to identify relevant studies for inclusion.  Databases searched include Medline, Embase, CINAHL and The Cochrane Library. Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were used to guide the review. Results: Ten of the 11 studies in this paper concluded that basic life support refresher sessions may increase retention of cardiopulmonary resuscitation skills.  Two of the included studies discussed self-perceived confidence as a secondary outcome.  One of these two studies demonstrated a significant correlation between higher self-confidence and improved retention of cardiopulmonary resuscitation skills. Conclusion: Basic life support refresher sessions can have a positive impact on cardiopulmonary resuscitation skill retention among health care professionals.  However, the most effective method of delivering refresher sessions must be further clarified.  The optimal duration of these sessions as well as the optimal timing of delivering these sessions also requires further clarification through further research