5,585 research outputs found
Vortex nucleation in bose-einstein condensates due to effective magnetic fields
We investigate the rotational properties of a Bose-Einstein condensate (BEC) in an effective magnetic field. The corresponding gauge potential is optically generated, and based on the adiabatic motion of the atoms. We demonstrate that the nucleation of vortices is seeded by instabilities in surface excitations and show that this picture also holds when the applied effective magnetic field is not homogeneous. The eventual configuration of vortices in the cloud depends on the geometry of the applied field
Gartcosh Steel Mill regeneration project
New hi-tech, innovative businesses are springing up where Scotland's heavy industries once reigned supreme. Redevelopment of the former Ravenscraig steel works in Lanarkshire is continuing apace with a new town centre, complete with commercial facilities, soon to be constructed. The site of the former Gartcosh Steel Mill, also in Lanarkshire, is also being transformed, and architects and engineers from the University of Strathclyde are driving forward the plans. Gartcosh Business Interchange is set to become a new 50-hectare business location which has already been selected as the location for the major new office campus for Scotland's new FBI-style crime unit.It is anticipated that Gartcosh will create up to 170,000 sq ft of business space which could support up to 4000 jobs
Valuing knowledge transfer : a new approach to assessing the broader impact of higher education institutions
There is considerable policy interest in exploring the overall value of higher education to society and in how higher education can support wider economic growth and development through 'knowledge transfer' from higher education institutions. Until fairly recently consideration of 'knowledge transfer' activity has tended to be mainly focussed on those HEI outputs that are commercial or market-based, relate to interaction with businesses and which are also relatively easy to measure (licensing, patents, consultancy contracts and so on). However it is beginning to be recognised that non-market outputs of higher education institutions (such as community interactions) could also have significant economic and social value linked to their support of knowledge flow to the wider community. This paper presents a new perspective on knowledge transfer from institutions. It demonstrates the application of welfare economic principles to estimate the value of non-market outputs of higher education institutions and It presents the results of a pilot study of 3 areas of non-market activity of Scottish higher education institutions, namely community engagement, cultural outreach and public policy advisory activity
Synthesis of indoles via alkylidenation of acyl hydrazides
Indoles have been synthesised via alkylidenation of acyl phenylhydrazides using phosphoranes and the Petasis reagent, followed by in situ thermal rearrangement of the product enehydrazines. The Petasis reagent provides an essentially neutral equivalent of the [acid-catalysed] Fischer indole synthesis, but with acyl phenylhydrazides as starting substrates. Alkylidene triphenylphosphoranes convert aroyl phenylhydrazides to indoles, but acyl phenylhydrazides derived from aliphatic carboxylic acids undergo a Brunner reaction to form indolin-2-ones
Tigger paper : integration
The process of architecture will always be holistic. As long as it is taught in segments, its educational structure will always run the risk of failing to meet this primary educational aim, and be continually shooting itself in the foot. The pedagogical and professional advantage to breaking the perceived lack of integration between studio and subject classes is I believe a fundamental imperative, to recognise that every part of the architectural process is not in contradiction but has equal value, and to realise the added value that integration would bring to all parts of the educational process, to staff and student alike
Categorisation of designs according to preference values for shape rules
Shape grammars have been used to explore design spaces through design generation according to sets of shape rules with a recursive process. Although design space exploration is a persistent issue in computational design research, there have been few studies regarding the provision of more preferable and refined outcomes to designers. This paper presents an approach for the categorisation of design outcomes from shape grammar systems to support individual preferences via two customised viewpoints: (i) absolute preference values of shape rules and (ii) relative preference values of shape rules with shape rule classification levels with illustrative examples
Asymptotic properties of stochastic population dynamics
In this paper we stochastically perturb the classical Lotka{Volterra model x_ (t) = diag(x1(t); ; xn(t))[b + Ax(t)] into the stochastic dierential equation dx(t) = diag(x1(t); ; xn(t))[(b + Ax(t))dt + dw(t)]: The main aim is to study the asymptotic properties of the solution. It is known (see e.g. [3, 20]) if the noise is too large then the population may become extinct with probability one. Our main aim here is to nd out what happens if the noise is relatively small. In this paper we will establish some new asymptotic properties for the moments as well as for the sample paths of the solution. In particular, we will discuss the limit of the average in time of the sample paths
Improved prediction of shell side heat transfer in horizontal evaporative shell and tube heat exchangers
This paper presents an improved prediction method for the heat transfer and pressure drop in the shell side of a horizontal shell and tube evaporator. The results from an experimental test program are used in which a wide range of evaporating two-phase shell side flow data was collected from a TEMA E-shell evaporator. The data are compared with shell side heat transfer coefficient and pressure drop models for homogeneous and stratified flow. The comparison suggests a deterioration in the heat transfer data at low mass fluxes consistent with a transition from homogeneous to stratified flow. The pressure drop data suggest a stratified flow across the full test range. A new model is presented that suggests the transition in the heat transfer data may be due to the extent of tube wetting in the upper tube bundle. The new model, which also takes into account the orientation of the shell side baffles, provides a vast improvement on the predictions of a homogenous type model. The new model would enable designers of shell side evaporators/reboilers to avoid operating conditions where poor heat transfer could be expected, and it would also enable changes in process conditions to be assessed for their implications on likely heat transfer performance. (Abstract from WOK
A review of the effectiveness of lower limb orthoses used in cerebral palsy
To produce this review, a systematic literature search was conducted for relevant articles published in the period between the date of the previous ISPO consensus conference report on cerebral palsy (1994) and April 2008. The search terms were 'cerebral and pals* (palsy, palsies), 'hemiplegia', 'diplegia', 'orthos*' (orthoses, orthosis) orthot* (orthotic, orthotics), brace or AFO
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