Communicating and accentuating the aesthetic and expressive dimension in choral conducting

This article considers the issues that are involved in effective choral conducting from an aesthetic dimension. Drawing upon research, theories and practice, it provides some insight into the nature of communication and the significance of gesture on vocal outcome as well as qualities of leadership concomitant with such musical activity. The article also reports on a research study that investigated the professional development of students and teachers in the area of choral conducting, focusing on their attitudes, skill acquisition and the importance attached to reflection on practice. The findings reveal that consideration of what counts as effective conducting gesture and communication skill can promote better conducting and, consequently, better, more expressive singing. In addition, the positive impact of self and peer reflection on progress (both face-to-face and within a virtual learning environment) was also acknowledged. Certain suggestions for promoting effective musical leadership in the area of choral conducting are provided, in order to ground theoretical perspectives in practice

The Digital Difference of Online Social Networking in the Carribean

Users of online social networking sites have made significant advances in the development of global virtual communities. With their origins in listservs, egroups, blogs, chat rooms and instant messaging, social networking sites provide opportunities for users with required skills, to construct public or semi-public profiles, to interact with ???friends??? and colleagues across the globe and to collaboratively create social capital. The presentation will focus on the impact of social networking on the Caribbean. It will examine participation of Caribbean people, including candidates in recent general elections held in 2007 and 2008, in popular social networking sites, such as Facebook, MySpace and YouTube. The assessment will cover factors influencing membership and participation, conditions under which content is created and information shared, as well as issues of privacy and protection. In recognition of the successes of these sites in facilitating interaction among large geographically dispersed groups of users, sharing content, collaborating with peers, and linking communities, the presentation will also examine and assess the role of information literacy the activities of library social networking sites, and their contribution to the development of interactive information resources in the social sciences.International Federation of Library AssociationsUniversity of Toronto, LibraryUniversity of Toronto, Faculty of InformationUniversity of Illinois, LibraryTitle VI National Resource Center Grant (P015A060066)unpublishednot peer reviewe

A quantitative definition of hypervalency

From the inception of Lewis’ theory of chemical bonding, hypervalency has remained a point of difficulty that has not been fully resolved by the currently accepted qualitative definition of this term. Therefore, in this work, a quantitative measure of hypervalency has been developed. The only required input is the atomic charge map, which can be obtained from either quantum calculations or from experiment. Using this definition, it is found that well-known species such as O3, CH2N2 and ClO4-, are indeed hypervalent, whilst others such as XeF4, PCl5 and SO42-, are not. Quantitative analysis of known species of general formulae XFnm-, XClnm-, and XOnm- shows that there are no fundamental differences in chemical bonding for hypervalent and non-hypervalent species. Nevertheless, hypervalency is associated with chemical instability, as well as a high degree of covalent rather than ionic bonding. The implications for accepted Lewis structure conventions are discussed

Civil society roles in transition: towards sustainable food?

Civil society organisations (CSOs) are often conspicuously absent in policy discussions and strategic planning about food security and the environmental sustainability of food systems. However, findings from a recent study of UK-based CSOs indicate that these groups make a variety of important contributions towards innovation in both policy and practice. This briefing paper draws attention to the disconnection between the narrowly constrained treatment of CSOs within policy circles, and the broad range of different ways that they actually engage with and influence policy and market conditions. Its purpose is to provoke new ways of thinking about civil society and provide CSOs with a new logic (and evidence) to underpin their efforts to leverage resources. Key messages are as follows: - UK-based CSOs have historically made significant contributions to the innovation trajectories of our food and agriculture systems - In contrast to markets, which tend towards homogeneity and are fuelled by competition, characteristics of civil society that crucially underpin these contributions are diversity and collaboration - Policy ignorance of civil society – its purposes, how it operates and its contributions to the development of agro-food systems – must be addressed, e.g. by incentivising and creating spaces for exchange of ideas and practices between CSOs, policy-makers and academics - Established ways of engaging CSOs in the governance of agro-food systems must be re-thought and more appropriate modes and levels of intervention in and support for civil society must be sough

Editorial: Federal developments

On 10 May 2011, Federal Treasurer Wayne Swan MP delivered the Federal Budget for the 2011–2012 financial year. The Budget contains a number of new initiatives, financial redistributions and reductions that relate to Australia's current regulatory framework governing the environment, climate change and renewable energy. These are set out below..

A structural and functional model for human bone sialoprotein

Human bone sialoprotein (BSP) is an essential component of the extracellular matrix of bone. It is thought to be the primary nucleator of hydroxyapatite crystallization, and is known to bind to hydroxyapatite, collagen, and cells. Mature BSP shows extensive post-translational modifications, including attachment of glycans, sulfation, and phosphorylation, and is highly flexible with no specific 2D or 3D structure in solution or the solid state. These features have severely limited the experimental characterization of the structure of this protein. We have therefore developed a 3D structural model for BSP, based on the available literature data, using molecular modelling techniques. The complete model consists of 301 amino acids, including six phosphorylated serines and two sulfated tyrosines, plus 92 N- and O-linked glycan residues. A notable feature of the model is a large acidic patch that provides a surface for binding Ca2+ions. Density functional theory quantum calculations with an implicit solvent model indicate that Ca2+ ions are bound most strongly by the phosphorylated serines within BSP, along with reasonably strong binding to Asp and Glu, but weak binding to His and sulfated tyrosine. The process of early hydroxyapatite nucleation has been studied by molecular dynamics on an acidic surface loop of the protein; the results suggest that the cationic nature of the loop promotes nucleation by attracting Ca2+ ions, while its flexibility allows for their rapid self-assembly with PO43- ions, rather than providing a regular template for crystallization. The binding of a hydroxyapatite crystal at the protein’s acidic patch has also been modelled. The relationships between hydroxyapatite, collagen and BSP are discussed

Culture and Cognitive Theory: Toward a Reformulation

In a provocative and important recent article Anthony Marsella (1998) makes an eloquent plea for the forging of a new metadiscipline of psychology that he labels global-community psychology. Marsella argues that we need a radical rethinking of the fundamental premises of psychology, rooted as they are in Western cultural traditions. Features of an emergent global-community psychology include an emphasis on multicultural and multidisciplinary approaches to human behavior that draw attention to the importance of context and meaning in human lives. Marsella's call for a global-community psychology reflects, in part, a growing body of literature that demonstrates the importance of cultural factors in a diver-sity of psychological domains such as cognition, emotion, social behavior, and psychopathology

Real time and virtual: tracking the professional development and reflections of choral conductors

Professional development in conducting is inconsistent across the U.K., leading to a lack of confidence amongst teachers. This paper outlines the continued tracking of the professional development of choral conductors in their skills, knowledge and perceptions of their own progress. The course Choral Conducting, Leadership and Communication takes place over some five months during the spring and summer terms at the Institute of Education, University of London. The students on the course are a mix of i) those on a one year postgraduate initial teacher education programme (PGCE), ii) full- or part-time students on an MA in Music Education Programme and iii) those serving teachers who take it as a non-award bearing CPD course. Students attend four one day practical conducting workshop seminars and are also required to study on-line in a virtual learning environment in the intervening periods. Here they reflect on practice during the face-to-face teaching sessions and in their own professional context through up-loaded video extracts. In addition they retrieve other appropriate study materials and are required to peer assess and form small support groups in discussion forums. This paper describes the progressive development of inclusion of a virtual learning environment (over the period of two years) and the outcomes of this innovative approach to teaching choral conducting which supports face to face teaching

Community Influences on Schooling and Work Activity of Youth in Pakistan

The schooling and work activities of youth remain fundamental to their human capital development. Yet we have limited understanding of factors influencing these activities in Pakistan and elsewhere. The bulk of research on children’s work and schooling looks primarily to household-level factors to explain current rates. As such, activities’ of youth are viewed as a product of family strategies for confronting poverty. On the other hand, the influences at the community level on work and schooling of youth have received relatively little attention and remain largely undeveloped in the literature. Further, work and schooling activities remain are usually investigated separately in the analyses. Most studies focus on either the work activities or schooling of youth, despite recent appeals to examine these activities simultaneously [DeGraff, Bilsborrow and Herrin (1993); Mahmood, Javaid and Baig (1994) and Weiner and Noman (1997)]. The purpose of this paper is to assess the participation of youth in work and schooling activities and the way household and community factors shape these activities. I address two central research questions in this paper. First, what is the distribution of Pakistani youth in work and schooling activities? Second, what factors influence the likelihood that youth engage in work and/or schooling? Particularly, what is the influence of community-level factors (specifically, availability of schools, wage returns to education, and infrastructure development) on the activities of youth?

Random projections as regularizers: learning a linear discriminant from fewer observations than dimensions

We prove theoretical guarantees for an averaging-ensemble of randomly projected Fisher linear discriminant classifiers, focusing on the casewhen there are fewer training observations than data dimensions. The specific form and simplicity of this ensemble permits a direct and much more detailed analysis than existing generic tools in previous works. In particular, we are able to derive the exact form of the generalization error of our ensemble, conditional on the training set, and based on this we give theoretical guarantees which directly link the performance of the ensemble to that of the corresponding linear discriminant learned in the full data space. To the best of our knowledge these are the first theoretical results to prove such an explicit link for any classifier and classifier ensemble pair. Furthermore we show that the randomly projected ensemble is equivalent to implementing a sophisticated regularization scheme to the linear discriminant learned in the original data space and this prevents overfitting in conditions of small sample size where pseudo-inverse FLD learned in the data space is provably poor. Our ensemble is learned from a set of randomly projected representations of the original high dimensional data and therefore for this approach data can be collected, stored and processed in such a compressed form. We confirm our theoretical findings with experiments, and demonstrate the utility of our approach on several datasets from the bioinformatics domain and one very high dimensional dataset from the drug discovery domain, both settings in which fewer observations than dimensions are the norm