New England Album: Special Edition for Maine

A pamphlet produced by Wells, Richardson & Co. to provide a directory of Maine politicians interspersed with testimonials for the company\u27s Paine\u27s Celery Compound. Includes many illustrations. Circa 1895

Scalable computation of thermomechanical turbomachinery problems

A commonly held view in the turbomachinery community is that finite element methods are not well-suited for very large-scale thermomechanical simulations. We seek to dispel this notion by presenting performance data for a collection of realistic, large-scale thermomechanical simulations. We describe the necessary technology to compute problems with $O(10^7)$ to $O(10^9)$ degrees-of-freedom, and emphasise what is required to achieve near linear computational complexity with good parallel scaling. Performance data is presented for turbomachinery components with up to 3.3 billion degrees-of-freedom. The software libraries used to perform the simulations are freely available under open source licenses. The performance demonstrated in this work opens up the possibility of system-level thermomechanical modelling, and lays the foundation for further research into high-performance formulations for even larger problems and for other physical processes, such as contact, that are important in turbomachinery analysis.The support of Mitsubishi Heavy Industries is gratefully acknowledged. CNR is supported by EPSRC Grant EP/N018877/1

The Impact of a “Three Good Things in Nature” Writing Task on Nature Connectedness, Pro-nature Conservation Behavior, Life Satisfaction, and Mindfulness in Children

This research explores relationships between nature connectedness, pro-nature conservation behaviour, life satisfaction and mindfulness in children aged 9-11 years and assesses the impact of a 3 good-things in nature writing intervention. Participants were assigned to either an experimental condition, writing about 3 good-things in nature, or a control condition, writing about any three things, over 5 days. In total, 138 children provided complete data. Multiple regression showed nature connectedness and environmental perceptions predicted pro-nature conservation behaviour whilst nature connectedness and mindfulness predicted life satisfaction. MANOVA examined group differences and revealed a significant multivariate effect of time with univariant effects for nature connectedness, mindfulness and life satisfaction, but not pro-nature conservation behaviour. A significant multivariate time x group interaction was observed whereby univariate ANOVA revealed time x group interactions for pro-conservation behaviour and nature connectedness. Post hoc t-tests for pro-conservation behaviour indicated no group differences at baseline, but higher pro-conservation behaviour post-intervention in the experimental condition. For nature connectedness, post-hoc t-tests indicated higher levels in the experimental condition at all three time points; whilst change in nature connectedness from baseline to post-intervention was greater in the experimental group than the control. There was no group difference in change in nature connectedness from baseline to follow-up. Data was collected during late spring/early summer which may result in seasonal effects. Future research could address this by collecting data throughout the year. This research demonstrates support for relationships between nature connectedness and both pro-conservation behaviour and life satisfaction in children and shows that short interventions can impact on nature connectedness and pro-conservation behaviour, although the impact on nature connectedness was relatively short-lived

Construction of Arbitrary Order Finite Element Degree-of-Freedom Maps on Polygonal and Polyhedral Cell Meshes

We develop a method for generating degree-of-freedom maps for arbitrary order finite element spaces for any cell shape. The approach is based on the composition of permutations and transformations by cell sub-entity. Current approaches to generating degree-of-freedom maps for arbitrary order problems typically rely on a consistent orientation of cell entities that permits the definition of a common local coordinate system on shared edges and faces. However, while orientation of a mesh is straightforward for simplex cells and is a local operation, it is not a strictly local operation for quadrilateral cells and in the case of hexahedral cells not all meshes are orientable. The permutation and transformation approach is developed for a range of element types, including Lagrange, and divergence- and curl-conforming elements, and for a range of cell shapes. The approach is local and can be applied to cells of any shape, including general polytopes and meshes with mixed cell types. A number of examples are presented and the developed approach has been implemented in an open-source finite element library

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http://www.archive.org/details/hierarchicalclus00richNAN

Containers for Portable, Productive, and Performant Scientific Computing

Containers are an emerging technology that holds promise for improving productivity and code portability in scientific computing. The authors examine Linux container technology for the distribution of a nontrivial scientific computing software stack and its execution on a spectrum of platforms from laptop computers through high-performance computing systems. For Python code run on large parallel computers, the runtime is reduced inside a container due to faster library imports. The software distribution approach and data that the authors present will help developers and users decide on whether container technology is appropriate for them. The article also provides guidance for vendors of HPC systems that rely on proprietary libraries for performance on what they can do to make containers work seamlessly and without performance penalty

The good things children notice in nature: An extended framework for reconnecting children with nature

This research identifies themes emerging from a children’s writing task, where they wrote about good things they noticed in nature over a five day period. Eighty four children aged nine to eleven participated, resulting in 847 written statements. Content analysis using an emergent coding approach identified ten themes, with “Active Animals” being the most frequently occurring theme. Combining the themes with Author (2017a, b, c) pathways to nature connection provides an extended framework to inform children’s activity programmes, design of school grounds and urban spaces, aiming to connect children with nature. Future research could extend the framework into a practitioner’s tool kit.N/