Symmetric hyperbolic monopoles

Hyperbolic monopole solutions can be obtained from circle-invariant ADHM data if the curvature of hyperbolic space is suitably tuned. Here we give explicit ADHM data corresponding to axial hyperbolic monopoles in a simple, tractable form, as well as expressions for the axial monopole fields. The data is deformed into new 1-parameter families preserving dihedral and twisted-line symmetries. In many cases explicit expressions are presented for their spectral curves and rational maps of both Donaldson and Jarvis type.Comment: 20 pages, 1 figur

Trade Liberalisation and Poverty in Nepal: A Computable General Equilibrium Micro Simulation Analysis

computable general equilibrium modelling, international trade, poverty, Nepal.

Making Law More Accessible: Designing Collaborative Learning Environments for Physically Remote Generation Y Students

In addition to an understanding of substantive law, the undergraduate law degree at Queensland University of Technology (QUT) aims to develop students’ lifelong skills. In the unit ‘Principles of Equity’ the skill developed includes teamwork, in the context of legal letter writing. Given the increased technological mobility of Generation Y students, the presenters have developed and trialled a model that enables these skills to be learnt and practiced online. The result is a more flexible environment that not only ensures congruent learning experiences between internal and external (or physically remote) students, but provides a connected or engaged educational program to supplement existing teaching method. This paper outlines the above project, the pedagogy that influenced it, and its impact on student learning experiences. Some issues for the development of such learning innovations in the future are also addresse

Trade Liberalisation and Poverty in Nepal A Computable General Equilibrium Micro Simulation Analysis

Concern is growing regarding the poverty impacts of trade liberalization. The strong general equilibrium effects of trade liberalization can only be properly analysed in a CGE model. However, the aggregate nature of CGE models is not suited to detailed poverty analysis. We bridge this gap by constructing a CGE model that explicitly models all households from a nationally representative household survey. We find complex income and consumption effects that would be missed in standard CGE models. Urban poverty falls and rural poverty increases as initial tariffs were highest for agriculture. Impacts increase with income level, resulting in rising income inequality.computable general equilibrium modelling, international trade, poverty, Nepal

Feedback information and the reward positivity

The reward positivity is a component of the event-related brain potential (ERP) sensitive to neural mechanisms of reward processing. Multiple studies have demonstrated that reward positivity amplitude indices a reward prediction error signal that is fundamental to theories of reinforcement learning. However, whether this ERP component is also sensitive to richer forms of performance information important for supervised learning is less clear. To investigate this question, we recorded the electroencephalogram from participants engaged in a time estimation task in which the type of error information conveyed by feedback stimuli was systematically varied across conditions. Consistent with our predictions, we found that reward positivity amplitude decreased in relation to increasing information content of the feedback, and that reward positivity amplitude was unrelated to trial-to-trial behavioral adjustments in task performance. By contrast, a series of exploratory analyses revealed frontal-central and posterior ERP components immediately following the reward positivity that related to these processes. Taken in the context of the wider literature, these results suggest that the reward positivity is produced by a neural mechanism that motivates task performance, whereas the later ERP components apply the feedback information according to principles of supervised learning