A concise and convergent (formal) total synthesis of huperzine A

The first convergent synthesis of the tricyclic skeleton of huperzine A is described and includes, as the key step, an efficient regioselective intramolecular Heck reaction of 2-(tert-butyldimethylsillyoxymethyl)-6-(2-methoxy-5-bromopyridin-6-yl)methylcyclohex-2-enol.

Extraction of electrode kinetic parameters from microdisc voltammetric data measured under transport conditions intermediate between steady-state convergent and transient linear diffusion as typically applies to room temperature ionic liquids

The extraction of electrode kinetic parameters for electrochemical couples in room-temperature ionic liquids (RTILs) is currently an area of considerable interest. Electrochemists typically measure electrode kinetics in the limits of either transient planar or steady-state convergent diffusion for which the voltammetic response is well understood. In this paper we develop a general method allowing the extraction of this kinetic data in the region where the diffusion is intermediate between the planar and convergent limits, such as is often encountered in RTILs using microelectrode voltammetry. A general working surface is derived, allowing the inference of Butler-Volmer standard electrochemical rate constants for the peak-to-peak potential separation in a cyclic voltammogram as a function of voltage scan rate. The method is applied to the case of the ferrocene/ferrocenium couple in [C(2)mim][N(Tf)(2)] and [C(4)mim][N(Tf)(2)].

'A new sword on an old anvil': W.B.Yeats, Robert Graves and the Anglo-Irish Tradition

Throughout his writing life, Robert Graves was consistently and often publicly hostile to the work of W.B. Yeats, whilst still also owing a considerable debt to the older poet (who he never met). This essay explores Graves' complex responses to Yeats, arguing that his antagonism may be understood in the light of his own Anglo-Irish background, and is implicated in his relations with his father, Alfred Perceval Graves, as well as his experience of the First World War. Probing the suggestiveness of Graves's claim in 1959 that his poems 'remain true to the Anglo-Irish poetic tradition into which I was born', it traces the relation between Yeats and Graves through correspondence, critical writings, and through a comparative reading of Yeats's A Vision and Graves's The White Goddess, and reveals underlying similarities in their critical and mythological thinking in spite of Graves's public disavowal of the Yeatsian aesthetic.

Evidencing reflective practice in social work education: Theoretical uncertainties and practical challenges

Reflective practice has become an increasingly influential idea in social work education and, in the UK context, it has recently been acknowledged as key to ensuring that social workers are better equipped to engage in complex decision making and effective practice. However, there remains a lack of clarity about how this concept is defined and operationalised in teaching and learning and there has been little systematic empirical examination of its utility in facilitating professional development. Drawing on research with undergraduates at Queen's University Belfast, this paper aims to develop understanding of students' experience of reflective practice. The results suggest that agency systems that have become over-reliant on rules and procedures present formidable obstacles to learning both at an individual and at an organisational level. The paper argues that the relationship between how reflective practice is taught and how it is enacted in practice needs to be better understood if such obstacles are to be overcome. The paper concludes by considering the implications of the findings for developing reflective practice in social work education and practice and highlights the challenges that need to be addressed if reflection and critical thinking are to become more firmly embedded within agency systems and practice cultures.

Terry Eagleton, Postmodernism and Ireland

Terry Eagleton devoted considerable thought to the nature of postmodernism during the heyday of the postmodernist debate in the Eighties and Nineties, and always expressed strong reservations about it.1 It is worth noting that these reservations do not imply any hostility to formal experimentation, or to the registering of alienation in its postmodern form. Rather, he seeks to show how there might be a politically and morally engaged art which was very much of our time. His position is consistent with those he adopts in dealing with other subjects, and may be illuminated by reference to those works where he does so. Of all these other subjects, the most illuminating for understanding his work is that of Irish literature, for it was during this period that Eagleton became a major figure in Irish studies, and his thinking on postmodernist relativism was developed alongside his critique of revisionism in Irish historiography.

The Revival of Private Property and Its Limits in Post-Mao China

This monograph examines the nature and significance of the re-emergence of private property in rapidly changing post-Mao China.

In examining this issue, the study explores a key dichotomy in Chinese law, that is, ‘public versus private’, and examines the manner in which the Chinese define ownership. The study stresses the importance of lack of clarity in the boundaries between the public and the private in property rights.

While there is a limited move towards the recognition of private property in real estate in contemporary China, this analysis also shows that ownership in the law, and ownership as understood and practised socially, often diverge significantly.

From the Qing dynasty reforms of the late nineteenth century onwards, ‘modernist’ law and entrenched social practice have often opposed each other. In contrast to the official, and indeed legal, support for unitary and exclusive property rights, the reality of the property regime has been a fragmentation of property rights. ‘Modern’ conceptions and theories of property rights emerged in the context of nation-building from the late Qing onwards, and unitary and exclusive property rights were considered as ‘badges’ of modernity.

These conceptions and theories served (and still serve) the purposes of control and governance but were, and still are, often resisted in social practice and popular thinking, leading to alienation and conflict. As a result, analysis of the nature and the social and political implications of re-emerging private property rights provides important insights for our understanding of the changing nature of modern China.

Positron scattering and annihilation on noble-gas atoms

Positron scattering and annihilation on noble-gas atoms is studied ab initio using many-body theory methods for positron energies below the positronium formation threshold. We show that in this energy range, the many-body theory yields accurate numerical results and provides a near-complete understanding of the positron–noble-gas atom system. It accounts for positron-atom and electron-positron correlations, including the polarization of the atom by the positron and the nonperturbative effect of virtual positronium formation. These correlations have a large influence on the scattering dynamics and result in a strong enhancement of the annihilation rates compared to the independent-particle mean-field description. Computed elastic scattering cross sections are found to be in good agreement with recent experimental results and Kohn variational and convergent close-coupling calculations. The calculated values of the annihilation rate parameter Zeff (effective number of electrons participating in annihilation) rise steeply along the sequence of noble-gas atoms due to the increasing strength of the correlation effects, and agree well with experimental data.

Implementation of a new atomic basis for the He i equilibrium line ratio technique for electron temperature and density diagnostic in the SOL for H-mode plasmas in DIII-D

Evaluating the ratio of selected helium lines allows for measurement of electron densities and temperatures. This technique is applied for L-mode plasmas at TEXTOR (O. Schmitz et al., Plasma Phys. Control. Fusion 50 (2008) 115004). We report our first efforts to extend it to H-mode plasma diagnostics in DIII-D. This technique depends on the accuracy of the atomic data used in the collisional radiative model (CRM). We present predictions for the electron temperatures and densities by using recently calculated R-Matrix With Pseudostates (RMPS) and Convergent Close-Coupling (CCC) electron-impact excitation and ionization data. We include contributions from higher Rydberg states by means of the projection matrix. These effects become significant for high electron density conditions, which are typical in H-mode. We apply a non-equilibrium model for the time propagation of the ionization balance to predict line emission profiles from experimental H-mode data from DIII-D. © 2010 Elsevier B.V. All rights reserved.

Maria Edgeworth: Nineteenth century Irish female pioneer of science education.

Maria Edgeworth was a nineteenth century novelist, primarily remembered for her adult and children's novels. Yet her book, Letters for literary ladies discussed the importance of science education for girls and in conjunction with her father, Richard Edgeworth, she wrote several treatises on education. Their book Practical education advocates an inquiry approach to teaching science and also using scientific practices, such as observation and data collection, to examine and plan children's education. They emphasised the importance and the role of experimentation, observation and critical thinking in the development of children's knowledge, skills and attitudes towards learning. However, the history of science education has to date ignored this seminal work and Maria's contributions to women's science education.

Fast ion acceleration from thin foils irradiated by ultra-high intensity, ultra-high contrast laser pulses

Ion acceleration resulting from the interaction of ultra-high intensity (2 x 10(20) W/cm(2)) and ultra-high contrast (similar to 10(10)) laser pulses with 0.05-10 mu m thick Al foils at normal (0 degrees) and 35 degrees laser incidence is investigated. When decreasing the target thickness from 10 mu m down to 0.05 mu m, the accelerated ions become less divergent and the ion flux increases, particularly at normal (0 degrees) laser incidence on the target. A laser energy conversion into protons of,similar to 6.5% is estimated at 35 degrees laser incidence. Experimental results are in reasonable agreement with theoretical estimates and can be a benchmark for further theoretical and computational work. (C) 2011 American Institute of Physics. [doi:10.1063/1.3643133]

The buffering effect of hope on clinicians' behavior:A test in pediatric primary care

Although trait hope is thought to motivate goal-directed actions in the face of impediments, few studies have directly examined hope's role in overcoming obstacles, and none have done so while accounting for related goal constructs. We describe a study of 127 pediatric primary care providers who over the course of a year were asked to identify new cases of asthma and confirm previously diagnosed active disease by completing for each of their patients a brief survey validated for this purpose. These clinicians also completed measures of hope, self-efficacy, conscientiousness, and perceived obstacles to implementing a pediatric asthma management program. As predicted by hope theory, the agency component of hope buffered clinicians from perceived obstacles by facilitating the identification of asthma cases among high-hope clinicians in the face of obstacles. This buffering effect remained after controlling for self-efficacy and conscientiousness. We discuss the study findings in terms of current theories of goal-directed behavior and implications for delivering hope-related interventions, and we offer a testable hypothesis regarding when agency and pathways thinking facilitate goal-related behavior.

Mathematical anxiety is linked to reduced cognitive reflection: A potential road from discomfort in the mathematics classroom to susceptibility to biases

Background
When asked to solve mathematical problems, some people experience anxiety and threat, which can lead to impaired mathematical performance (Curr Dir Psychol Sci 11:181–185, 2002). The present studies investigated the link between mathematical anxiety and performance on the cognitive reflection test (CRT; J Econ Perspect 19:25–42, 2005). The CRT is a measure of a person’s ability to resist intuitive response tendencies, and it correlates strongly with important real-life outcomes, such as time preferences, risk-taking, and rational thinking.

Methods
In Experiments 1 and 2 the relationships between maths anxiety, mathematical knowledge/mathematical achievement, test anxiety and cognitive reflection were analysed using mediation analyses. Experiment 3 included a manipulation of working memory load. The effects of anxiety and working memory load were analysed using ANOVAs.

Results
Our experiments with university students (Experiments 1 and 3) and secondary school students (Experiment 2) demonstrated that mathematical anxiety was a significant predictor of cognitive reflection, even after controlling for the effects of general mathematical knowledge (in Experiment 1), school mathematical achievement (in Experiment 2) and test anxiety (in Experiments 1–3). Furthermore, Experiment 3 showed that mathematical anxiety and burdening working memory resources with a secondary task had similar effects on cognitive reflection.

Conclusions
Given earlier findings that showed a close link between cognitive reflection, unbiased decisions and rationality, our results suggest that mathematical anxiety might be negatively related to individuals’ ability to make advantageous choices and good decisions.

Essays on James Clarence Mangan: The Man in the Cloak

This volume explores the extraordinary literary achievement of James Clarence Mangan (1803-1849), increasingly recognised as one of the most important Irish writers of the nineteenth century and a crucial influence on later writers such as W.B. Yeats and James Joyce. It is the first collection of essays to focus on Mangan, and features articles by leading scholars in the field (including Jacques Chuto and David Lloyd) as well as contributions from acclaimed contemporary writers, Paul Muldoon and Ciaran Carson. The collection expands existing fields of debate--translation, the supernatural, intertextuality, nationalism, romanticism-- and introduces new ones: Mangan's afterlife in the English literary canon, cosmopolitanism and Weltliteratur, antiquity and futurity, nineteenth-century spiritualism and magical thinking. 'The man in the cloak', one of Mangan's favourite pseudonyms, is still a a resonant soubriquet for a writer who has eluded sustained critical attention, and this volumes restores him to his proper place in European and British, as well as Irish literary history.