170 research outputs found
Team-taught versus individually taught undergraduate education: A qualitative study of student experiences and preferences
Team teaching is becoming more common in undergraduate programmes of study although the relative merits to the more traditional individually taught courses have not been determined for best practice. For this study, 15 final year undergraduate students were interviewed to gain insight into their learning experiences. A thematic analysis of the interview data identified the perceived advantages and disadvantages of each mode of teaching. The advantages of individually taught courses included: Consistency of content delivery and advice, Familiarity with the lecturer’s teaching style and better Continuity of the subject content. The disadvantage of individually taught modules included Missing knowledge, compared to a team approach. Advantages of team taught modules included: Greater insight into a topic delivered by multiple team members. Disadvantages included: Content overlap, Conflicting messages relating to assessment, team members not taking Ownership of their roles and responsibilities and a belief that overall Team failure is worse than individual failure to deliver a module well. The results revealed that individually taught modules were generally preferred to team taught modules. A set of best practice recommendations are proposed to address the challenges when delivering team-taught teaching and become more student focused
CD44 targeting reduces tumour growth and prevents post-chemotherapy relapse of human breast cancers xenografts
CD44 is a marker of tumour-initiating cells and is upregulated in invasive breast carcinoma; however, its role in the cancer progression is unknown. Here, we show that antibody-mediated CD44-targeting in human breast cancer xenografts (HBCx) significantly reduces tumour growth and that this effect is associated to induction of growth-inhibiting factors. Moreover, treatment with this antibody prevents tumour relapse after chemotherapy-induced remission in a basal-like HBCx
Search For Heavy Pointlike Dirac Monopoles
We have searched for central production of a pair of photons with high
transverse energies in collisions at TeV using of data collected with the D\O detector at the Fermilab Tevatron in
1994--1996. If they exist, virtual heavy pointlike Dirac monopoles could
rescatter pairs of nearly real photons into this final state via a box diagram.
We observe no excess of events above background, and set lower 95% C.L. limits
of on the mass of a spin 0, 1/2, or 1 Dirac
monopole.Comment: 12 pages, 4 figure
The Dijet Mass Spectrum and a Search for Quark Compositeness in bar{p}p Collisions at sqrt{s} = 1.8 TeV
Using the DZero detector at the 1.8 TeV pbarp Fermilab Tevatron collider, we
have measured the inclusive dijet mass spectrum in the central pseudorapidity
region |eta_jet| < 1.0 for dijet masses greater than 200 Gev/c^2. We have also
measured the ratio of spectra sigma(|eta_jet| < 0.5)/sigma(0.5 < |eta_jet| <
1.0). The order alpha_s^3 QCD predictions are in good agreement with the data
and we rule out models of quark compositeness with a contact interaction scale
< 2.4 TeV at the 95% confidence level.Comment: 11 pages, 4 figures, 2 tables, submitted to Phys. Rev. Let
Search for High Mass Photon Pairs in p-pbar --> gamma-gamma-jet-jet Events at sqrt(s)=1.8 TeV
A search has been carried out for events in the channel p-barp --> gamma
gamma jet jet. Such a signature can characterize the production of a
non-standard Higgs boson together with a W or Z boson. We refer to this
non-standard Higgs, having standard model couplings to vector bosons but no
coupling to fermions, as a "bosonic Higgs." With the requirement of two high
transverse energy photons and two jets, the diphoton mass (m(gamma gamma))
distribution is consistent with expected background. A 90(95)% C.L. upper limit
on the cross section as a function of mass is calculated, ranging from
0.60(0.80) pb for m(gamma gamma) = 65 GeV/c^2 to 0.26(0.34) pb for m(gamma
gamma) = 150 GeV/c^2, corresponding to a 95% C.L. lower limit on the mass of a
bosonic Higgs of 78.5 GeV/c^2.Comment: 9 pages, 3 figures. Replacement has new H->gamma gamma branching
ratios and corresponding new mass limit
Zgamma Production in pbarp Collisions at sqrt(s)=1.8 TeV and Limits on Anomalous ZZgamma and Zgammagamma Couplings
We present a study of Z +gamma + X production in p-bar p collisions at
sqrt{S}=1.8 TeV from 97 (87) pb^{-1} of data collected in the eegamma
(mumugamma) decay channel with the D0 detector at Fermilab. The event yield and
kinematic characteristics are consistent with the Standard Model predictions.
We obtain limits on anomalous ZZgamma and Zgammagamma couplings for form factor
scales Lambda = 500 GeV and Lambda = 750 GeV. Combining this analysis with our
previous results yields 95% CL limits |h{Z}_{30}| < 0.36, |h{Z}_{40}| < 0.05,
|h{gamma}_{30}| < 0.37, and |h{gamma}_{40}| < 0.05 for a form factor scale
Lambda=750 GeV.Comment: 17 Pages including 2 Figures. Submitted to PR
A Measurement of the W Boson Mass
We report a measurement of the W boson mass based on an integrated luminosity
of 82 pb from \ppbar collisions at TeV recorded in
1994--1995 by the \Dzero detector at the Fermilab Tevatron. We identify W
bosons by their decays to and extract the mass by fitting the transverse
mass spectrum from 28,323 W boson candidates. A sample of 3,563 dielectron
events, mostly due to Z to ee decays, constrains models of W boson production
and the detector. We measure \mw=80.44\pm0.10(stat)\pm0.07(syst)~GeV. By
combining this measurement with our result from the 1992--1993 data set, we
obtain \mw=80.43\pm0.11 GeV.Comment: 11 pages, 5 figure
Probing Hard Color-Singlet Exchange in ppbar Collisions at root-s=630 GeV and 1800 GeV
We present results on dijet production via hard color-singlet exchange in
proton-antiproton collisions at root-s = 630 GeV and 1800 GeV using the DZero
detector. The fraction of dijet events produced via color-singlet exchange is
measured as a function of jet transverse energy, separation in pseudorapidity
between the two highest transverse energy jets, and proton-antiproton
center-of-mass energy. The results are consistent with a color-singlet fraction
that increases with an increasing fraction of quark-initiated processes and
inconsistent with two-gluon models for the hard color-singlet.Comment: 16 pages, 6 figure
Rheumatology clinicians’ experiences of brief training and implementation of skills to support patient self-management
BACKGROUND: Self-management of arthritis requires informed, activated patients to manage its physical and psychosocial consequences. Patient activation and self-management can be enhanced through the use of cognitive-behavioural approaches, which have a strong evidence base and provide insight into the variation in outcome of patients with ostensibly the same degree of disease activity. However, training for rheumatology health professionals in theory and skills underpinning the facilitation of self-management is not widely available. To develop such training, this study explored rheumatology clinicians’ experiences of a variety of brief skills training courses to understand which aspects were helpful or unhelpful, and to identify the barriers and facilitators of applying the skills in clinical practice. METHODS: 16 clinicians who had previously attended communication and self-management skills training participated in semi-structured interviews: 3 physicians, 3 physiotherapists, 4 nurses, 6 occupational therapists. Transcripts were analysed (ED) using a hybrid inductive and deductive thematic approach, with a subset independently analysed (SH, RG-H, RJ). RESULTS: 3 overarching themes captured views about training undertaken and subsequent use of approaches to facilitate self-management. In ‘putting theory into practice’, clinicians felt that generic training was not as relevant as rheumatology-specific training. They wanted a balance between theory and skills practice, and identified the importance of access to ongoing support. In ‘challenging professional identity’, models of care and working cultures influenced learning and implementation. Training often challenged a tendency to problem-solve on behalf of patients and broadened clinicians’ remit from a primary focus on physical symptoms to the mind and body interaction. In ‘enhanced practice’, clinicians viewed consultations as enhanced after training. Focus had shifted from clinicians’ agendas to those of patients, and clinicians reported eliciting patients’ priorities and the use of theoretically-driven strategies such as goal-setting. CONCLUSIONS: To varying extents, clinicians were able to learn and implement new approaches to support patient self-management after brief training. They believed that cognitive behavioural and communication skills to facilitate self-management enhanced their practice. To optimise self-management support in routine care brief, skills-based, rheumatology-specific training needs to be developed, alongside ongoing clinical supervision. Further research should examine patients’ perspectives of care based on these approaches
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