23 research outputs found

    Brane Inflation, Solitons and Cosmological Solutions: I

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    In this paper we study various cosmological solutions for a D3/D7 system directly from M-theory with fluxes and M2-branes. In M-theory, these solutions exist only if we incorporate higher derivative corrections from the curvatures as well as G-fluxes. We take these corrections into account and study a number of toy cosmologies, including one with a novel background for the D3/D7 system whose supergravity solution can be completely determined. This new background preserves all the good properties of the original model and opens up avenues to investigate cosmological effects from wrapped branes and brane-antibrane annihilation, to name a few. We also discuss in some detail semilocal defects with higher global symmetries, for example exceptional ones, that could occur in a slightly different regime of our D3/D7 model. We show that the D3/D7 system does have the required ingredients to realise these configurations as non-topological solitons of the theory. These constructions also allow us to give a physical meaning to the existence of certain underlying homogeneous quaternionic Kahler manifolds.Comment: Harvmac, 115 pages, 9 .eps figures; v2: typos corrected, references added and the last section expanded; v3: Few minor typos corrected and references added. Final version to appear in JHE

    A Scholarly Review of Supply Chain Integration within the New Zealand Blueberry Industry

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    Ethics and credence attributes are the humanistic basis for establishing sustainable supply chain development. It determines brand reputation, ecology and customer experience. Furthermore, good ethics and credence Attributes promote the progress of industry leadership and increase the possibility of win-win strategies, especially in terms of negotiation. Negotiation is the premise of supply chain collaboration. The purpose of collaboration is to establish a synchronized supply chain to improve the ability of industry coordination. This is also the key to creating value, and the importance of risk management cannot be ignored. It is not only a guarantee for the smooth operation of the supply chain, but also an important measure to improve the flexibility of the supply chain. Finally, the results of supply chain integration need to rely on performance metrics and benchmarking to control and improve the overall performance of the supply chain. This publication evaluates modern theories in all these areas and contextualise it to the New Zealand blueberry industry. It is important that the reader appreciates the scholarly origin of this publication

    Efeito da adição de soro de leite sobre a digestibilidade aparente e os parâmetros sanguíneos de vacas secas

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    Avaliou-se o efeito da adição de soro de leite líquido à dieta sobre os parâmetros sanguíneos e sobre a digestibilidade aparente da matéria seca (DAMS), da proteína bruta (DAPB), da fibra em detergente neutro (DAFDN) e da fibra em detergente ácido (DAFDA) em 12 vacas Girolando, secas, que receberam feno de coastcross (Cynodon dactylon), suplementado com sal proteinado, e zero (controle), 15, 30 ou 45 litros de soro de leite/dia. A adição de soro na dieta afetou a DAMS e a DAPB (PThe effect of liquid whey addition in the diet on blood parameters and on the apparent digestibility of dry matter (ADDM), crude protein (ADCP), neutral detergent fiber (ADNDF), and acid detergent fiber (ADADF) was evaluated in 12 dry Gir cows, receiving coastcross (Cynodon dactylon) hay supplemented with protein salt and zero (control), 15, 30, or 45 liters of whey per day. The inclusion of the whey in the diet affected the ADDM and ADCP (P<0.01) and had no effect on ADNDF and ADADF. As high the volume of whey inclusion, higher the ADDM and ADCP values. The average values of glucose in blood plasma - 59.3, 64.0, 66.6, and 69.2mg/dL - varied (P<0.01) among treatments, adjusting themselves to positive linear dL regressions. The whey inclusion diminished (P<0.01) blood urea values - 22.83, 20.17, 17.5, and 15.67. The whey improved the efficiency of utilization of nitrogen compounds in the rumen and can be used to complement protein supplements with high levels of urea

    The effects of simulating human conversational style in a computer-based interview

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    Modelling faba bean production in an uncertain future climate

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    Future climate change may bring risk or benefit to crop production. In this paper, the possible impact of climate change on faba bean production in Scotland is examined. Instead of conventional simulation modelling techniques, the belief network approach is applied to deal with the uncertain information associated with climate prediction. A belief network is constructed which relates faba bean growth and development to weather according to an agricultural expert's advice. The existing FABEAN model and a weather generator are used to generate data to train the belief network, so that it can answer queries on faba bean production under various climate predictions. Using a range of possible future climate scenarios, we have shown that the predictions given by the belief networks can represent accurately those from the exhaustive runs of a simulation model, and in a more efficient way. The possibility of combining belief network techniques with Geographical Information Systems (GIS) as a means of scaling from local to regional predictions for crop production is also discussed

    An application of belief networks to future crop production

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