Health school-based mindfulness interventions for improving mental health: a systematic review and thematic synthesis of qualitative studies

School-based mindfulness interventions have recently shown promise for treating and preventing mental health issues in young people. However, the literature lacks a high-level perspective of the impact of mindfulness on young people’s mental health according to their own first-hand accounts. Therefore, the objective of this study was to conduct the first systematic review and thematic synthesis to rigorously evaluate the qualitative evidence pertaining to students’ experiences of school-based MBIs. The following electronic databases were searched for qualitative school-based mindfulness intervention papers published up until the end of March 2019: PubMed, Web of Science, Scopus, ProQuest, and Google Scholar. An assessment of study quality was undertaken using the Critical Appraisal Skills Programme qualitative checklist. The initial literature search returned 4102 papers and seven studies met all of the inclusion criteria. The thematic synthesis identified four major themes of (i) using attentional processes to regulate emotions and cognitions, (ii) stress reduction, (iii) improved coping and social skills, and (iv) calming and/or relaxation. Findings show that school-based MBIs are experienced by students as having a range of benefits to mental health, including in both preventative and treatment contexts. However, efforts should be made to improve methodological quality, including taking steps to minimise recall bias and provide a greater degree of transparency regarding how students are selected to attend qualitative interviews or focus groups.N

Predictability and hierarchy in Drosophila behavior

Even the simplest of animals exhibit behavioral sequences with complex temporal dynamics. Prominent amongst the proposed organizing principles for these dynamics has been the idea of a hierarchy, wherein the movements an animal makes can be understood as a set of nested sub-clusters. Although this type of organization holds potential advantages in terms of motion control and neural circuitry, measurements demonstrating this for an animal's entire behavioral repertoire have been limited in scope and temporal complexity. Here, we use a recently developed unsupervised technique to discover and track the occurrence of all stereotyped behaviors performed by fruit flies moving in a shallow arena. Calculating the optimally predictive representation of the fly's future behaviors, we show that fly behavior exhibits multiple time scales and is organized into a hierarchical structure that is indicative of its underlying behavioral programs and its changing internal states

Degradation mechanisms of materials for large space systems in low Earth orbit

Degradation was explored of various materials used in aerospace vehicles after severe loss of polymeric material coatings (Kapton) was observed on an early shuttle flight in low Earth orbit. Since atomic oxygen is the major component of the atmosphere at 300 km, and the shuttle's orbital velocity produced relative motion corresponding to approx. 5 eV of oxygen energy, it was natural to attribute much of this degradation to oxygen interaction. This assumption was tested using large volume vacuum systems and ion beam sources, in an exploratory effort to produce atomic oxygen of the appropriate energy, and to observe mass loss from various samples as well as optical radiation. Several investigations were initiated and the results of these investigations are presented in four papers. These papers are summarized. They are entitled: (1) The Space Shuttle Glow; (2) Laboratory Degradation of Kapton in a Low Energy Oxygen Ion Beam; (3) The Energy Dependence and Surface Morphology of Kapton Degradation Under Atomic Oxygen Bombardment; and (4) Surface Analysis of STS 8 Samples