1,555 research outputs found
Can a computerised training paradigm assist people with intellectual disabilities to learn cognitive mediation skills? A randomised experiment
Aims: The aim was to examine whether specific skills required for cognitive behavioural
therapy (CBT) could be taught using a computerised training paradigm with people who have
intellectual disabilities (IDs). Training aimed to improve: a) ability to link pairs of situations
and mediating beliefs to emotions, and b) ability to link pairs of situations and emotions to
mediating beliefs.
Method: Using a single-blind mixed experimental design, sixty-five participants with IDs
were randomised to receive either computerised training or an attention-control condition.
Cognitive mediation skills were assessed before and after training.
Results: Participants who received training were significantly better at selecting appropriate
emotions within situation-beliefs pairs, controlling for baseline scores and IQ. Despite
significant improvements in the ability of those who received training to correctly select
intermediating beliefs for situation-feelings pairings, no between-group differences were
observed at post-test.
Conclusions: The findings indicated that computerised training led to a significant
improvement in some aspects of cognitive mediation for people with IDs, but whether this
has a positive effect upon outcome from therapy is yet to be established
Oscillations of a gas pocket on a liquid-covered solid surface
The dynamic response of a gas bubble entrapped in a cavity on the surface of
a submerged solid subject to an acoustic field is investigated in the linear
approximation. We derive semi-analytical expressions for the resonance
frequency, damping and interface shape of the bubble. For the liquid phase, we
consider two limit cases: potential flow and unsteady Stokes flow. The
oscillation frequency and interface shape are found to depend on two
dimensionless parameters: the ratio of the gas stiffness to the surface tension
stiffness, and the Ohnesorge number, representing the relative importance of
viscous forces. We perform a parametric study and show, among others, that an
increase in the gas pressure or a decrease in the surface tension leads to an
increase in the resonance frequency until an asymptotic value is reached
Marginal Release Under Local Differential Privacy
Many analysis and machine learning tasks require the availability of marginal
statistics on multidimensional datasets while providing strong privacy
guarantees for the data subjects. Applications for these statistics range from
finding correlations in the data to fitting sophisticated prediction models. In
this paper, we provide a set of algorithms for materializing marginal
statistics under the strong model of local differential privacy. We prove the
first tight theoretical bounds on the accuracy of marginals compiled under each
approach, perform empirical evaluation to confirm these bounds, and evaluate
them for tasks such as modeling and correlation testing. Our results show that
releasing information based on (local) Fourier transformations of the input is
preferable to alternatives based directly on (local) marginals
Minimizing Flow Time in the Wireless Gathering Problem
We address the problem of efficient data gathering in a wireless network
through multi-hop communication. We focus on the objective of minimizing the
maximum flow time of a data packet. We prove that no polynomial time algorithm
for this problem can have approximation ratio less than \Omega(m^{1/3) when
packets have to be transmitted, unless . We then use resource
augmentation to assess the performance of a FIFO-like strategy. We prove that
this strategy is 5-speed optimal, i.e., its cost remains within the optimal
cost if we allow the algorithm to transmit data at a speed 5 times higher than
that of the optimal solution we compare to
Due Process and Deeds of Trust—Strange Bedfellows?
The authors examine in detail the validity of the private sale provisions of the Washington Deed of Trust Act in light of the recent procedural due process decisions of the United States Supreme Court. In addition to concluding that the present Washington Act appears to be unconstitutional, the authors briefly discuss the policy considerations involved and suggest general guidelines for change
CD4+ T-cell responses to Epstein-Barr virus (EBV) latent-cycle antigens and the recognition of EBV-transformed lymphoblastoid cell lines
There is considerable interest in the potential of Epstein-Barr virus (EBV) latent antigen-specific CD4 T cells to act as direct effectors controlling EBV-induced B lymphoproliferations. Such activity would require direct CD4 T-cell recognition of latently infected cells through epitopes derived from endogenously expressed viral proteins and presented on the target cell surface in association with HLA class II molecules. It is therefore important to know how often these conditions are met. Here we provide CD4 epitope maps for four EBV nuclear antigens, EBNA1, -2, -3A, and -3C, and establish CD4 T-cell clones against 12 representative epitopes. For each epitope we identify the relevant HLA class II restricting allele and determine the efficiency with which epitope-specific effectors recognize the autologous EBV-transformed B-lymphoblastoid cell line (LCL). The level of recognition measured by gamma interferon release was consistent among clones to the same epitope but varied between epitopes, with values ranging from 0 to 35% of the maximum seen against the epitope peptide-loaded LCL. These epitope-specific differences, also apparent in short-term cytotoxicity and longer-term outgrowth assays on LCL targets, did not relate to the identity of the source antigen and could not be explained by the different functional avidities of the CD4 clones; rather, they appeared to reflect different levels of epitope display at the LCL surface. Thus, while CD4 T-cell responses are detectable against many epitopes in EBV latent proteins, only a minority of these responses are likely to have therapeutic potential as effectors directly recognizing latently infected target cells
Strain-aware assembly of genomes from mixed samples using flow variation graphs
The goal of strain-aware genome assembly is to reconstruct all individual haplotypes from a mixed sample at the strain level and to provide abundance estimates for the strains
Carbon nanotube-Si diode as a detector of mid-infrared illumination
We report a room temperature mid-infrared photodetector based on a carbon nanotube-silicon heterojunction nanostructure. The observed mid-infrared band (8–12 μm) role= presentation \u3e(8–12μm) in the photocurrent spectrum is consistent with the estimated band gap energy of semiconducting multiwall nanotubes (15 to 30 nm diameter). The fast response time (16 ms) and small temperature change (∼10−8 K) role= presentation \u3e(∼10−8K) upon infrared light suggest that the photocurrent response is not due to bolometric effect. We determined that the primary mechanism of the photocurrent in this spectral range is associated with photon absorption of semiconducting multiwalled carbon nanotubes followed by charge separation at the interface, their transport, and collection at the external electrodes
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