Inflatable antennas for microwave pwoer transmission

Operational phase of the inflatable radiator; inflatable space structures; advantages; inflated thin-film satellites; antenna configuration; 3 meter diameter test paraboloid (HAIR program); and weight breakdown for the 100 meter diameter reflector are outlined. This presentation is represented by viewgraphs only

Groupoid equivalence and the associated iterated crossed product

Given groupoids $G$ and $H$ and a $(G,H)$-equivalence $X$ we may form the transformation groupoid $G\ltimes X\rtimes H$. Given a separable groupoid dynamical system $(A,G\ltimes X\rtimes H,\omega)$ we may restrict $\omega$ to an action of $G\ltimes X$ on $A$ and form the crossed product $A\rtimes G\ltimes X$. We show that there is an action of $H$ on $A\rtimes G\ltimes X$ and that the iterated crossed product $(A\rtimes G\ltimes X)\rtimes H$ is naturally isomorphic to the crossed product $A\rtimes (G\ltimes X\rtimes H)$.Comment: 18 pages; changed typo in titl

NN-detachable pairs in 3-connected matroids II: life in XX

Let $M$ be a 3-connected matroid, and let $N$ be a 3-connected minor of $M$. A pair $\{x_1,x_2\} \subseteq E(M)$ is $N$-detachable if one of the matroids $M/x_1/x_2$ or $M \backslash x_1 \backslash x_2$ is both 3-connected and has an $N$-minor. This is the second in a series of three papers where we describe the structures that arise when it is not possible to find an $N$-detachable pair in $M$. In the first paper in the series, we showed that if $M$ has no $N$-detachable pairs, then either $M$ has one of three particular 3-separators that can appear in a matroid with no $N$-detachable pairs, or there is a 3-separating set $X$ with certain strong structural properties. In this paper, we analyse matroids with such a structured set $X$, and prove that they have either an $N$-detachable pair, or one of five particular 3-separators that can appear in a matroid with no $N$-detachable pairs.Comment: 47 pages, 5 figure

Reading and talking about novels : a consideration of the contribution of peer discussions of novels to the development of inter-personal understanding in upper primary school children.

Though educational theorists have frequently claimed that literature makes an important educational contribution to the development of means of understanding other people, the results of previous research are equivocal. Uncertainty surrounds both the measures employed in many studies and the influence of classroom conditions such as the quality of teacher-led discussions of novels. Recent argument for the role of English in furthering the 'personal growth' of children gives added significance to the task of understanding what classroom strategies and conditions affect the impact literature may have

Data Vault and HQDM Principles

The paper explores applicability of high quality data modeling (HQDM)principles for data vault modelin

14. Recovery: the business case

This paper makes the Business Case for supporting recovery. We believe that this should be informed by three types of data: evaluative research (such as randomised controlled trials); the perceived benefits for service users – what might be termed ‘customer satisfaction’; and best evidence about value for money. Some of the ImROC 10 key challenges have a very strong research base. For example, there is substantially more randomised controlled trial evidence supporting the value of peer support workers (challenge 8) than exists for any other mental health professional group, or service model. Similarly, the scientific evidence for supporting self-management (challenge 1) is compelling. Other challenges have a strong evidence base indicating that they improve people’s experience of services. The positive experiences of students at Recovery Colleges (challenge 3) and the beneficial impact on experience of more involvement in safety planning (challenge 6) are clear