1,645 research outputs found
A multi modal interface for a visually impaired pupils educational environment
The aim of this paper is to describe a multi modal user interface integrated within an architecture allowing visually impaired pupils and sighted people to work on the same station. This architecture is developed to face the problem of the inclusion of visually impaired pupils in mainstream education. The system is able to display the same original multi-media content converted in different ways on screen, Braille terminal and vocal synthesizers. It accepts various interactions from keyboard, Braille bar and mouse. Both blind and sighted users can manage the same tools, cooperate together on the same content, and thus perform the same activities. Blind pupils may be assisted by sighted teachers or tutors that don’t know how to read Braille characters
Absence of a Role for Phosphorylation in the Tau Pathology of Alzheimer's Disease
Acknowledgments: Depolymerised bovine tubulin was kindly donated by J. Kilmartin (MRC Laboratory of Molecular Biology, Cambridge). This work was supported by the Medical Research Council (UK), a Wellcome Trust Studentship to RL, the Leopold Muller Estate, and the Newton Trust (Trinity College, Cambridge). We gratefully acknowledge Academic Books for permission to use Table 2 and Figures 2–4 which correspond to Table 1 and Figures 20–22 from Wischik C.M., Lai, R.Y.K. and Harrington, C.R. Modelling prion-like processing of tau protein in Alzheimer’s disease for pharmaceutical development, in Brain Microtubule Associated Proteins: Modifications in Disease, Avila, J.; Brandt, R.; Kosik, K.S., Eds. Harwood Academic Publishers: Amsterdam, The Netherlands, 1997. Erratum published on 12 August 2016, see Biomolecules 2016, 6(3), 35. http://www.mdpi.com/2218-273X/6/3/35Peer reviewedPublisher PD
Droplet actuation induced by coalescence: experimental evidences and phenomenological modeling
This paper considers the interaction between two droplets placed on a
substrate in immediate vicinity. We show here that when the two droplets are of
different fluids and especially when one of the droplet is highly volatile, a
wealth of fascinating phenomena can be observed. In particular, the interaction
may result in the actuation of the droplet system, i.e. its displacement over a
finite length. In order to control this displacement, we consider droplets
confined on a hydrophilic stripe created by plasma-treating a PDMS substrate.
This controlled actuation opens up unexplored opportunities in the field of
microfluidics. In order to explain the observed actuation phenomenon, we
propose a simple phenomenological model based on Newton's second law and a
simple balance between the driving force arising from surface energy gradients
and the viscous resistive force. This simple model is able to reproduce
qualitatively and quantitatively the observed droplet dynamics
A Measurement of Small Scale Structure in the 2.2 < z < 4.2 Lyman-alpha Forest
The amplitude of fluctuations in the Ly-a forest on small spatial scales is
sensitive to the temperature of the IGM and its spatial fluctuations. The
temperature of the IGM and its spatial variations contain important information
about hydrogen and helium reionization. We present a new measurement of the
small-scale structure in the Ly-a forest from 40 high resolution, high
signal-to-noise, VLT spectra at z=2.2-4.2. We convolve each Ly-a forest
spectrum with a suitably chosen wavelet filter, which allows us to extract the
amount of small-scale structure in the forest as a function of position across
each spectrum. We compare these measurements with high resolution hydrodynamic
simulations of the Ly-a forest which track more than 2 billion particles. This
comparison suggests that the IGM temperature close to the cosmic mean density
(T_0) peaks near z=3.4, at which point it is greater than 20,000 K at 2-sigma
confidence. The temperature at lower redshift is consistent with the fall-off
expected from adiabatic cooling (), after the peak
temperature is reached near z=3.4. At z=4.2 our results favor a temperature of
T_0 = 15-20,000 K. However, owing mostly to uncertainties in the mean
transmitted flux at this redshift, a cooler IGM model with T_0 = 10,000 K is
only disfavored at the 2-sigma level here, although such cool IGM models are
strongly discrepant with the z ~ 3-3.4 measurement. We do not detect large
spatial fluctuations in the IGM temperature at any redshift covered by our data
set. The simplest interpretation of our measurements is that HeII reionization
completes sometime near z ~ 3.4, although statistical uncertainties are still
large [Abridged].Comment: Submitted to ApJ. Best printed in colo
CP debugging needs and tools
Conventional programming techniques are not well suited for solving many highly combinatorial industrial problems, like scheduling, decision making, resource allocation or planning. Constraint Programming (CP), an emerging software technology, offers an original approach allowing for efficient and flexible solving of complex problems, through combined implementation of various constraint solvers and expert heuristics. Its applications are increasingly elded in various industries
HeII Reionization and its Effect on the IGM
Observations of the intergalactic medium (IGM) suggest that quasars reionize
HeII in the IGM at z ~ 3. We have run a set of 190 and 430 comoving Mpc
simulations of HeII being reionized by quasars to develop an understanding of
the nature of HeII reionization and its potential impact on observables. We
find that HeII reionization heats regions in the IGM by as much as 25,000 K
above the temperature that is expected otherwise, with the volume-averaged
temperature increasing by ~ 12,000 K and with large temperature fluctuations on
~ 50 Mpc scales. Much of the heating occurs far from QSOs by hard photons. We
find a temperature-density equation of state of gamma -1 ~ 0.3 during HeII
reionization, but with a wide dispersion in this relation having sigma ~ 10^4
K. HeII reionization by the observed population of quasars cannot produce an
inverted relation (gamma - 1 < 0). Our simulations are consistent with the
observed evolution in the mean transmission of the HeII Ly-alpha forest. We
argue that the heat input due to HeII reionization is unable to cause the
observed depression at z = 3.2 in the HI Ly-alpha forest opacity as has been
suggested. We investigate how uncertainties in the properties of QSOs and of
HeII Lyman-limit systems influence our predictions.Comment: 19 pages, 15 figures, plus 9 pages of Appendix. accepted by Ap
Therapeutic Potential of Ralimetinib, a p38/MAPK14 Inhibitor, in Anaplastic Thyroid Cancer
View full abstracthttps://openworks.mdanderson.org/leading-edge/1028/thumbnail.jp
CP debugging tools: Clarification of functionalities and selection of the tools
Abstract is not available
Statistical approach for unpolarized fragmentation functions for the octet baryons
A statistical model for the parton distributions in the nucleon has proven
its efficiency in the analysis of deep inelastic scattering data, so we propose
to extend this approach to the description of unpolarized fragmentation
functions for the octet baryons. The characteristics of the model are
determined by using some data on the inclusive production of proton and
in unpolarized deep inelastic scattering and a next-to-leading
analysis of the available experimental data on the production of unpolarized
octet baryons in annihilation. Our results show that both parton
distributions and fragmentation functions are compatible with the statistical
approach, in terms of a few free parameters, whose interpretation will be
discussed.Comment: 14 pages, 7 eps figures, to appear in Phys. Rev.
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