Higher space mode analysis of a large cylindrical pulsed H₂O system

By utilizing a geometrically centered pulsed source internal to a large (B2g) ≈ 0.002) cylindrical H₂O system, the neutron flux was measured as a function of position and time. A least square fit of the data yielded the fundamental and five higher decay constants and amplitudes of the thermal neutron flux. Symmetrical and enhanced neutron densities were obtained as a result of the internal source. Long waiting times were unnecessary and data acquisition was accelerated. The decay constants were found to be independent of position, pulse width, counting time and rates, method of normalization, or waiting time. The decay constants were related to the bucklings by an analysis of the amplitudes without variance of the size of the system. This method gives Σav = (4759 ± 54) sec⁻¹, Do = (3.7084 ± 0.0897) x 10⁴ cm²/sec, L = (2.79 ± 0.05) cm, σaH = (323 ± 3) mb, and a mean neutron lifetime of (210 ± 2.4) µsec --Abstract, page ii

Preventive digital mental health interventions for children and young people: a review of the design and reporting of research

Abstract: Digital health interventions (DHIs) have frequently been highlighted as one way to respond to increasing levels of mental health problems in children and young people. Whilst many are developed to address existing mental health problems, there is also potential for DHIs to address prevention and early intervention. However, there are currently limitations in the design and reporting of the development, evaluation and implementation of preventive DHIs that can limit their adoption into real-world practice. This scoping review aimed to examine existing evidence-based DHI interventions and review how well the research literature described factors that researchers need to include in their study designs and reports to support real-world implementation. A search was conducted for relevant publications published from 2013 onwards. Twenty-one different interventions were identified from 30 publications, which took a universal (n = 12), selective (n = 3) and indicative (n = 15) approach to preventing poor mental health. Most interventions targeted adolescents, with only two studies including children aged ≤10 years. There was limited reporting of user co-design involvement in intervention development. Barriers and facilitators to implementation varied across the delivery settings, and only a minority reported financial costs involved in delivering the intervention. This review found that while there are continued attempts to design and evaluate DHIs for children and young people, there are several points of concern. More research is needed with younger children and those from poorer and underserved backgrounds. Co-design processes with children and young people should be recognised and reported as a necessary component within DHI research as they are an important factor in the design and development of interventions, and underpin successful adoption and implementation. Reporting the type and level of human support provided as part of the intervention is also important in enabling the sustained use and implementation of DHIs

Paisaje, asentamiento y Edad Media: reflexiones sobre dos estudios recientes

[EN] This article reviews two books on the historical development of medieval landscapes and settlement in Brittany and England, and goes on to reflect on the state of research in this field in the Spanish region of Castilla y León[ES] Este artículo parte de la crítica de dos libros sobre el asentamiento y los paisajes medievales en Bretaña (Francia) e Inglaterra para formular algunas reflexiones teóricas y metodológicas sobre el estado de este tipo de investigaciones en Castilla y León.Peer reviewe