Instanton-soliton loops in 5D super-Yang-Mills

C.P. is a Royal Society Research Fellow and is partly supported by U.S. DOE Grants DOESC0010008, DOE-ARRA-SC0003883 and DOE-DE-SC000789

Determination of the Priorities of ‘Actors' in the Framework of Environmental Management

One major source of uncertainty in industrial planning is due to the conflicting uses of environmental components by the proponent of an action and the various ‘actors' who share the proponent's environment. These actors may be government agencies, health authorities, conservancy organizations, or individual citizens. As they all share the environment with the proponent of the action, there should also be a sharing of the decision-making process. Difficulties of identifying potential actors at the non-governmental level can be reduced by undertaking a rigorous analysis of the environmental components, of the uses which they serve, of the way in which the uses may be impaired by proposed activities, and hence of which users are most likely to be concerned. The result of such an approach, which constitutes a new style of management ‘from the outside-in' rather than ‘from the inside-out', is that industry must involve itself in a broader-based and more imaginative planning process than hitherto. Failure by industry to do this will result in either a progressive erosion of the freedom of decision-making (by increased government interference) or in progressive blocking of industry's plans and consequently a reduction in its ability to achieve its corporate objectives of profit-growth-security in the face of conflict over its operations, its siting proposals, and its products. Suitable realization by managements of the interdependence of their actions with those of others should lead to the addition of a truly environmental dimension to their traditional function—even without the governmental intervention and pressure-group counteractivity which have become increasingly evident with the growth of the environmental movement in recent year

Accelerating Solitons

52 pages, 1 figureWe present the saddle-point approximation for the effective Hamiltonian of the quantum kink in two-dimensional linear sigma models to all orders in the time-derivative expansion. We show how the effective Hamiltonian can be used to obtain semiclassical soliton form factors, valid at momentum transfers of order the soliton mass. Explicit results, however, hinge on finding an explicit solution to a new wave-like partial differential equation, with a time-dependent velocity and a forcing term that depend on the solution. In the limit of small momentum transfer, the effective Hamiltonian reduces to the expected form, namely H = (P^2 + M^2)^(1/2), where M is the one-loop corrected soliton mass, and soliton form factors are given in terms of Fourier transforms of the corresponding classical profiles

Flexible Parametric Survival Analysis Using Stata: Beyond the Cox Model

Michael Mitchell’s Data Management Using Stata comprehensively covers data-management tasks, from those a beginning statistician would need to those hard-to-verbalize tasks that can confound an experienced user. Mitchell does this all in simple language with illustrative examples.Stata, survival models, parametric models, Cox model

Instanton Soliton Loops in 5D super-Yang-Mills

Soliton contributions to perturbative processes in QFT are controlled by a form factor, which depends on the soliton size. We provide a demonstration of this fact in a class of scalar theories with generic moduli spaces. We then argue that for instanton-solitons in 5D super-Yang-Mills theory the analogous form factor does not lead to faster-than-any-power suppression in the perturbative coupling. We also discuss the implications of such contributions for the UV behavior of maximally supersymmetric Yang-Mills in 5D and its relation to the (2,0) CFT in 6D. This is a contribution to the proceedings of the "String Math 2013'" conference and is a condensed version of results appearing in 1404.0016 and 1403.5017C.P. is a Royal Society Research Fellow and is partly supported by U.S. DOE Grants DOE- SC0010008, DOE-ARRA-SC0003883 and DOE-DE-SC000789

Anxiety characteristics in individuals with Williams syndrome

BACKGROUND: Williams syndrome anxiety research predominantly focuses on disorder prevalence and symptomatology, categorised using standardised mental health classifications. However, the use of these assessments may not fully capture the phenotypic features of anxiety in Williams syndrome. In this study, we examined characteristics of anxiety using a formulation framework. METHOD: A semi-structured interview was conducted with thirteen parents of individuals with Williams syndrome (median age: 19, age range: 12-45, 8 females). RESULTS: Various anxiety triggers were reported, including anxiety triggered by phobias, uncertainty and negative emotions in others. The range of described behaviours was diverse with both avoidant and active coping strategies for anxiety management reported. CONCLUSIONS: Many of the characteristics described were consistent with findings in the intellectual disability and typically developing literature, although novel information was identified. The study demonstrates the utility of a formulation framework to explore anxiety characteristics in atypical populations and has outlined new avenues for research

Investigating whether adverse prenatal and perinatal events are associated with non-clinical psychotic symptoms at age 12 years in the ALSPAC birth cohort

Background. Non-clinical psychosis-like symptoms (PLIKS) occur in about 15% of the population. It is not clear whether adverse events during early development alter the risk of developing PLIKS. We aimed to examine whether maternal infection, diabetes or pre-eclampsia during pregnancy, gestational age, perinatal cardiopulmonary resuscitation or 5-min Apgar score were associated with development of psychotic symptoms during early adolescence. Method. A longitudinal study of 6356 12-year-old adolescents who completed a semi-structured interview for psychotic symptoms in the Avon Longitudinal Study of Parents and Children (ALSPAC) birth cohort. Prenatal and perinatal data were obtained from obstetric records and maternal questionnaires completed during pregnancy. Results. The presence of definite psychotic symptoms was associated with maternal infection during pregnancy [adjusted odds ratio (OR) 1.44, 95% confidence interval (CI) 1.11–1.86, p=0.006], maternal diabetes (adjusted OR 3.43, 95% CI 1.14–10.36, p=0.029), need for resuscitation (adjusted OR 1.50, 95% CI 0.97–2.31, p=0.065) and 5-min Apgar score (adjusted OR per unit decrease 1.30, 95% CI 1.12–1.50, p<0.001). None of these associations were mediated by childhood IQ score. Most associations persisted, but were less strong, when including suspected symptoms as part of the outcome. There was no association between PLIKS and gestational age or pre-eclampsia. Conclusions. Adverse events during early development may lead to an increased risk of developing PLIKS. Although the status of PLIKS in relation to clinical disorders such as schizophrenia is not clear, the similarity between these results and findings reported for schizophrenia indicates that future studies of PLIKS may help us to understand how psychotic experiences and clinical disorders develop throughout the life-course