Service users' experiences of a brief intervention service for children and adolescents : a service evaluation

Ten per cent of young people experience mental health difficulties at any one time. Prevention and early intervention leads to better prognosis for young people's mental well-being in the short and long term. Child and Adolescent Mental Health Services (CAMHS) must be able to provide swift and effective interventions for a range of difficulties to meet this need. This paper presents a service evaluation of the Brief Intervention Service in North Lincolnshire CAMHS. Nine young people and/or their families took part in semi-structured interviews that aimed to explore their experiences of receiving an intervention from the service. Template analysis was carried out to draw out themes from the interview transcripts. The three a priori themes were treatment outcomes, areas for potential improvement, and things that are working well; and an additional two emergent themes were emotional experience and managing practical barriers. In addition, all participants were asked about their satisfaction with the service and whether they would recommend the service to others. One hundred per cent reported feeling respected by their clinician when asked directly, and all felt that the service would be helpful for other young people and families. Overall, families were satisfied with the service and reported outcomes including improvements in symptomatology and family functioning. Specific recommendations as to how the service could be improved were made, which related to difficulties accessing the service, the content of the sessions, and communication within the service and with other services

Intermediate Macdonald Polynomials and Their Vector Versions

Intermediate Macdonald polynomials for an affine root system $S$ with fixed origin and finite Weyl group $W_0$ are orthogonal polynomials invariant under a parabolic subgroup $W_J\le W_0$. The extreme cases of $W_J=1$ and $W_J=W_0$ correspond to the non-symmetric and symmetric Macdonald polynomials, respectively. In this paper we use double-affine Hecke algebras to study their basic properties, including that they form an orthogonal basis and that they diagonalise a commutative algebra of difference-reflection operators, and calculate their norms. Finally, we provide two interpretations of intermediate Macdonald polynomials as vector-valued polynomials of which examples can be found in the literature

Pushing the Frontier in Measuring the Mass of the Lightest Lepton: Results from the Karlsruhe Tritium Neutrino Experiment

The determination of the neutrino mass is one of the major challenges in particle physics today. Experiments, based solely on the kinematics of β-decay, provide a largely model-independent probe to the neutrino mass scale. The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to directly measure the effective electron antineutrino mass with a sensitivity of 0.2 eV (90% CL). It employs a cryogenic, highly pure, molecular tritium source providing a high luminosity of signal electrons. It is coupled to a high-resolution, integrating spectrometer for energy analysis. In this talk we present the principle of the measurement as well as how it was technically realised in a 70-m long beamline. Subsequent to a sequence of commissioning measurements, in 2019 the first neutrino mass run took place which will be discussed in detail. Our blind analyses allowed us to set an upper limit of 1.1 eV on the neutrino-mass scale at a 90% confidence level. This first result, based on a few weeks of running at a reduced source intensity and dominated by statistical uncertainty, improved on prior limits by nearly a factor of two. Finally, the talk will conclude with an outlook on future neutrino mass campaigns and on studies aiming to probe new physics theories (like sterile neutrinos) from the recorded high-resolution tritium β-spectra