47,755 research outputs found
A co-operating solver approach to building simulation
This paper describes the co-operating solver approach to building simulation as encapsulated within the ESP-r system. Possible adaptations are then considered to accommodate new functional requirements
Mirror dark matter will be confirmed or excluded by XENON1T
Mirror dark matter, where dark matter resides in a hidden sector exactly
isomorphic to the standard model, can be probed via direct detection
experiments by both nuclear and electron recoils if the kinetic mixing
interaction exists. In fact, the kinetic mixing interaction appears to be a
prerequisite for consistent small scale structure: Mirror dark matter halos
around spiral galaxies are dissipative - losing energy via dark photon
emission. This ongoing energy loss requires a substantial energy input, which
can be sourced from ordinary supernovae via kinetic mixing induced processes in
the supernova's core. Astrophysical considerations thereby give a lower limit
on the kinetic mixing strength, and indeed lower limits on both nuclear and
electron recoil rates in direct detection experiments can be estimated. We show
here that potentially all of the viable parameter space will be probed in
forthcoming XENON experiments including LUX and XENON1T. Thus, we anticipate
that these experiments will provide a definitive test of the mirror dark matter
hypothesis.Comment: about 10 page
Reaction of passengers to public service vehicle ride
A series of questionnaire studies is described, which was carried out on passengers in public service vehicles in the United Kingdom particularly cross-channel hovercraft, helicopter and train. The effectiveness of the different rating techniques employed is examined and it is demonstrated that useful and reliable information can be obtained on the effects of such physical parameters as vibration, vehicle motion and noise using rating methods which involve no external standards. Some results obtained from analysis of the survey returns are presented
The impacts for stone curlews of increased traffic on the A11. Model and predictions
Stone curlew nest density in the Breckland region of Eastern England was shown to be negatively related to ‘nearby’ housing density and ‘nearby’ trunk road traffic (based on new traffic data for the period 1988-2006). However, no statistically significant additional relationship with non-trunk A-road traffic could be detected. We recommend using the statistical modelling predictions in the report Table 5 as the best currently available estimates of the potential effect of a 70% increase in A11 average daily (March-August)two-way traffic above the average All traffic levels in 2002-06. The predicted effect of a 70% increase in A11 traffic is for a reduction from current observed nest numbers on suitable arable land of 3.7% with no changes in housing density or 4.9% when combined with the predicted effect of housing options. A reduction of 7.3% is predicted for semi-natural grassland and SSSI habitats. Taking both semi-natural grassland/SSSI and arable habitats together, the observed total average nest numbers for the period 2002-2006 was 221.4, and the prediction following a 70% increase in traffic on the A11 is 210.8, a reduction of 10.6 nests (4.8%)
Refocusing portfolio assessment: curating for feedback and portrayal
Portfolios are embraced extensively in higher professional education as effective tools for students to represent their learning and help prepare them for future practice. They are very diverse, used for both formative and summative purposes; however, concerns are raised that the current emphasis on academic standards and/or the focus on employability may lead to the perception of portfolios simply as means to portray achievements. This paper argues that contemporary portfolios in digital environments can readily facilitate both purposes. It conceptualises a whole-of-programme approach to the use of portfolios in which consideration is given to the need to bring curation skills and feedback processes to the forefront of portfolio practices. For teachers considering these issues, a planning framework for the design of programme-wide portfolios is proposed
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