Because cetaceans are difficult to study in the wild, little is known about how they use their sounds in their natural environment. Only the recent development of passive acoustic localization systems has enabled observations of the communication behaviour of individuals for correlation with their surface behaviour. Using such a system, I show that bottlenose dolphins in the Moray Firth, Scotla...

There is a strong and optimistic commitment by all staff to the school improvement strategy and a clear belief that further improvement is possible. Teachers take responsibility for the changes in their practice required to achieve school targets and are using data on a regular basis to monitor the effectiveness of their own efforts to meet those targets. The school has developed an agenda for ...

Natural levels of soil nutrients are spatio-temporally variable and insufficient for agricultural purposes. Artificial fertilizers applied to achieve greater crop growth rates yield. Mitscherlich's equation Boule's fertilizer units described illustrated in relation yield then estimate the nitrogen (N)-pool fraction that contributes a component greenhouse gas (GHG) emission, specifically nitrous...

This article focuses on Barbara Bray, an English woman of letters who worked for several decades with the BBC as a translator and adaptor plays novels radio, but also critic scriptwriter. Evidence found at Written Archives Centre reveals that Bray was very vocal about her rights multitasking cultural agent: when she didn’t fight better fees, demanded variety skills involved in work intercultura...

Land degradation and the associated soil acidity are critical challenge for crop production in Ethiopian highlands. Since liming is expensive, farmers have developed an alternative agroforestry system by integrating Acacia decurrens into their landscapes. The expansion rate of this was assessed over last three decades. effects charcoal-making kiln sites on properties were investigated five year...

The previous papers of this series (Bray, Thorpe & White, 1951, 1952e; Bray, Humphris, Thorpe, White & Wood, 1952b, c, d) reported a study of the kinetics in vivo of some reactions involving benzoic acid and some of its precursors, certain precursors of phenols and a series of substituted phenols. A mathematical model was worked out which could account for the effect upon metabolic fate of dose...

1 experience of imagined as well as real rewards 2 3 Signe Bray, Shinsuke Shimojo and John P O’Doherty 4 5 1. Computation and Neural Systems, Caltech 6 2. Biology Division, Caltech 7 3. Humanities and Social Sciences, Caltech 8 4. Center for Interdisciplinary Brain Science Research, Stanford University 9 5. Institute of Neuroscience, Trinity College Dublin 10 6. School of Psychology, Trinity Co...

We study the consequences of supersymmetry breaking in the computation of the number of solutions of the Thouless-Anderson-Palmer (TAP) equations. We show that Kurchan argument that proves the vanishing of the prefactor of the Bray and Moore saddle point for the total number of solutions can be extended to solutions at any given free energy. We also provide a new simple argument for the vanishi...

In their landmark paper [1], Bray and Savin note that the constant parameters model used by their agents to form expectations is misspecified and that, using standard econometric techniques, agents may be able to determine the time-varying nature of the model’s parameters. Here, we consider the same type of model as employed by Bray and Savin except that our agents form expectations using a per...

We have already reported (Bray, Ryman & Thorpe, 1947) upon the fate ofp-hydroxybenzoic acid and its amide in the rabbit. The present paper gives the corresponding results for the oand m-isomers. The changes which these compounds might undergo are theoretically the same as those for the p-isomer, i.e. the hydroxyl group may be conjugated with either glucuronic or sulphuric acids and the carboxyl...