New challenges in heart failure

Heart failure has received much publicity in the last five years. In all western countries, the numbers of patients admitted to hospital with heart failure is rising sharply. There is now widespread agreement about the poor prognosis, which is worse than many forms of cancer (1). Heart failure has also become, rather belatedly, a topic of considerable interest for cardiologists. As well as new drugs available, there are increasingly sophisticated procedures involving biventricular pacing and the use of defibrillators which, though costly, can significantly improve prognosis in certain patient groups (2)

Volunteering for a job : converting social capital into paid employment : a thesis presented in partial fulfilment of the requirements for the degree of Master of Philosophy in Sociology at Massey University

The study explores the extent to which the environment of voluntary associations promotes the development of social capital. Moreover, it asks about the extent to which an individual can convert the social capital they have developed in this environment into economic capital, via the labour market. Social capital is primarily concerned with the resources embedded in social relationships, and how individuals can access and use them. Qualitative and quantitative research methods were used to enquire into the experiences of volunteers affiliated to voluntary associations based in West Auckland. The findings indicate there is no simple causal relationship between an individual's voluntary activities, and the level and value of social capital they can accrue from them. Nevertheless, the findings do suggest that the social capital that is developed through voluntary activity can influence an individual's labour market outcomes. The research reported here indicates that labour market information is not equitably distributed through society. The study suggests that social policy can help bring this information to excluded groups. Targeted government support of the voluntary sector, aimed at providing opportunities for marginalised or minority groups to develop social capital, is one important option available to government to achieve this goal

Adaptive multispectral GPU accelerated architecture for Earth Observation satellites

In recent years the growth in quantity, diversity and capability of Earth Observation (EO) satellites, has enabled increase’s in the achievable payload data dimensionality and volume. However, the lack of equivalent advancement in downlink technology has resulted in the development of an onboard data bottleneck. This bottleneck must be alleviated in order for EO satellites to continue to efficiently provide high quality and increasing quantities of payload data. This research explores the selection and implementation of state-of-the-art multidimensional image compression algorithms and proposes a new onboard data processing architecture, to help alleviate the bottleneck and increase the data throughput of the platform. The proposed new system is based upon a backplane architecture to provide scalability with different satellite platform sizes and varying mission’s objectives. The heterogeneous nature of the architecture allows benefits of both Field Programmable Gate Array (FPGA) and Graphical Processing Unit (GPU) hardware to be leveraged for maximised data processing throughput

The isomorphism problem for some universal operator algebras

This paper addresses the isomorphism problem for the universal (nonself-adjoint) operator algebras generated by a row contraction subject to homogeneous polynomial relations. We find that two such algebras are isometrically isomorphic if and only if the defining polynomial relations are the same up to a unitary change of variables, and that this happens if and only if the associated subproduct systems are isomorphic. The proof makes use of the complex analytic structure of the character space, together with some recent results on subproduct systems. Restricting attention to commutative operator algebras defined by radical relations yields strong resemblances with classical algebraic geometry. These commutative operator algebras turn out to be algebras of analytic functions on algebraic varieties. We prove a projective Nullstellensatz connecting closed ideals and their zero sets. Under some technical assumptions, we find that two such algebras are isomorphic as algebras if and only if they are similar, and we obtain a clear geometrical picture of when this happens. This result is obtained with tools from algebraic geometry, reproducing kernel Hilbert spaces, and some new complex-geometric rigidity results of independent interest. The C*-envelopes of these algebras are also determined. The Banach-algebraic and the algebraic classification results are shown to hold for the weak-operator closures of these algebras as well.Comment: 46 pages. Final version, to appear in Advances in Mathematic

Understanding sprint-cycling performance: the integration of muscle power, resistance, and modeling

pre-printSprint-cycling performance is paramount to competitive success in over half the world-championship and Olympic races in the sport of cycling. This review examines the current knowledge behind the interaction of propulsive and resistive forces that determine sprint performance. Because of recent innovation in field power-measuring devices, actual data from both elite track- and road-cycling sprint performances provide additional insight into key performance determinants and allow for the construction of complex models of sprint-cycling performance suitable for forward integration. Modeling of various strategic scenarios using a variety of field and laboratory data can highlight the relative value for certain tactically driven choices during competition

Training with power measurement: a new era in cycling training

Journal ArticlePROVIDING CYCLISTS WITH A reliable measure of exercise intensity presents unique challenges. Environmental factors such as wind speed, road grade and surface texture, and air density interactively influence the resistance encountered during cycling and thus alter the speed a cyclist can maintain while riding at any specific intensity. For example, a cyclist might be capable of averaging 40 km/h in a tailwind with very little effort, but might be unable to maintain 20 km/h when climbing a hill at maximal effort

Science Theater as STEAM: A Case Study of Save It Now

What are the markers of a successful STEAM program? How and when can educators be reasonably sure that an interdisciplinary unit or project, rich in both the sciences and the arts, has delivered on its implicit promise – by adding value to a student’s education in ways that are beyond the scope of traditional discipline-specific learning? I attempt to address this question with a case study of Theatre of Will’s “Save It Now,” a pilot program for 4th, 5th and 6th graders at eight Los Angeles public schools that integrates theater arts, music and the STEM disciplines in a 9-week unit on energy, water and climate change. I am one of the program’s four teaching artists. My goal here is not to convince readers that “Save it Now” is successful, but rather to propose a theoretical framework for understanding, categorizing and evaluating STEAM programs in general. theatreofwill.or