12,900 research outputs found

    Agroforestry: Reconciling Production with Protection of the Environment

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    Leaflet summarising agro-forestry, and outlining the work needed to move agroforestry into the mainstream

    Agroforestry: Reconciling Production with Protection of the Environment A Synopsis of Research Literature

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    This is a synopsis of research literature that investigates the potential of temperate agroforestry as a sustainable production system. Agroforestry is a concept of integrated land use that combines elements of agriculture and forestry. An emphasis on managing rather than reducing complexity promotes a functionally biodiverse system that balances productivity with environmental protection

    The History of Temperate Agroforestry

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    Land use systems integrating trees and agriculture have been practised for thousands of years, and have traditionally been important elements of the agricultural landscape in tropical and temperate regions around the world. This report reviews explores a range of traditional temperate agroforestry practices and goes on to describe their decline and the development of modern systems

    Agroforestry Policy Review

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    A lack of policy support is seen as one of the main barriers to wider adoption of agroforestry, with the integration of trees at a low density into agricultural land challenging the conventional specialisation of forestry and agricultural policy mechanisms. Within the EU, it is necessary to examine how agroforestry fits into the two pillars of agricultural support; Pillar I - direct aids and market support, and Pillar II - rural development, as well as within forestry policy schemes for farm woodlands

    Not so cheap talk: a model of advice with communication costs

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    We model a game similar to the interaction between an academic advisor and advisee. Like the classic cheap talk setup, an informed player sends information to an uninformed receiver who is to take an action which affects the payoffs of both sender and receiver. However, unlike the classic cheap talk setup, the preferences regarding the receiver's actions are identical for both sender and receiver. Additionally, the sender incurs a communication cost which is increasing in the complexity of the message sent. We characterize the resulting equilibria. Under an additional out-of-equilibrium condition (Condition L), if preferences for sender and receiver are identical then the only equilibria are the most informative, feasible ones. A similar result appears in Chen, Kartik and Sobel (2008) when their No Incentive to Separate (NITS) condition is applied to the case where communication is costless but preferences diverge. Additionally, we model the competency of the advisee by the probability that the action is selected by mistake. We show that the informativeness of the sender is decreasing in the likelihood of the mistake. When the preferences between players diverge and when there are communication costs, we are not guaranteed uniqueness and we provide an example where an increase in communication costs can improve communication.complexity, communication, cheap talk

    Sustainable grass farming

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    “Sustainable grassland farming” suggests a stable, productive system, with limited dependence on external inputs, which is economically viable. Effects on the wider environment, particularly air, water and wildlife, also need to be considered. Many principles contribute o sustainability, this article concentrate on two of them: “healthy soil” and “plant species diversity”

    100% local and organic: closing the protein gap for poultry in the ICOPP Project

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    A key challenge in improving the sustainability of organic poultry production is meeting the required levels of nutrients from locally sourced organic feeds. 100% organic diets for monogastrics will become compulsory in the EU from 1st January 2015. The ICOPP project brings together knowledge, from 10 EU countries, of local feeds for monogastrics and their wider impact on growth, health and welfare and the environment to identify feeding strategies which comply with organic principles. This poster will report on feeding trials carried out with broilers in the UK by FAI and ORC to investigate the impact of algae, peas and lupins on broiler performance and welfare

    Beyond prospective accountancy : reassessing the case for British membership of the single European currency comparatively

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    The fact that Britain will, at most, be a late signatory to the single European currency means that the strategic deliberations it faces in deciding whether to enter EMU are rather different to those of earlier entrants. However, this crucial point is lost in almost all discussion of the subject. To date, the academic debate has been dominated by what we term 'prospective accountancy', in which a series of abstract counterfactuals ostensibly inform a stylised cost–benefit analysis. This article moves beyond such an approach by combining conjectures about the specificities of the British case with a concrete analysis of the experiences of the Eurozone member whose economy appears most closely to resemble Britain's: namely, Ireland. The comparative dimension of our work facilitates more empirically-based analysis of the merits and demerits of British entry into EMU. Yet, it is important not to lose sight of the limits of an exclusively comparative approach, for the British growth model is qualitatively different to that of other European Union economies. British growth since the early 1990s has been consumption led, and this in turn has been fuelled to a considerable degree by the release of equity from the housing market. The likely impact of EMU on the British economy will be determined to a significant extent, then, by its effect upon this key catalyst of British growth. Sadly, no retrospective comparison can inform such an assessment

    The Effect Of Social Presence On Teacher Technology Acceptance, Continuance Intention, And Performance In An Online Teacher Professional Development Course

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    The purpose of this study was to determine if the Technology Acceptance Model (TAM) could explain the relationship between teacher\u27s acceptance of an online teacher professional development course and their continuance intentions regarding online teacher professional development (oTPD). This study focused on the perceptions of the teachers as opposed to the design or implementation of oTPD. The participants (N=517) were mostly teachers (88.8%) enrolled in a statewide online course to provide classroom teachers with the latest knowledge of research-based instructional reading strategies. The course was offered over a 10-14 week period during the Spring 2006 semester through a public state university. Structural equation modeling was used to create a path analytic model extending the TAM to include two additional constructs: sociability and social presence. In addition, gains in instructional reading strategies knowledge (performance) were examined. Using this expanded version of the TAM, the study examined the causal relationships between sociability, social presence, perceived usefulness, perceived ease of use, continuance intention, and gains. Online distance education research has indicated that social presence can influence post-secondary students\u27 attitude and persistence within a web-based course. However a paucity of research exists on how technology acceptance and social presence impacts teachers within an online teacher professional development setting. Path analysis, univariate analysis of variance, and independent t-tests in SPSS v12.0 for Windows were used to analyze the data. The results suggest that the hypothesized extended model was a good fit. The model did indicate that both perceived ease of use and perceived usefulness were determinants of teachers\u27 intent to continue using oTPD for future professional development needs

    The Impact of Treatment of Organic Manures on Future Soil Carbon Sequestration Under Different Tillage Systems in Pakistan

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    Funds provided by Higher Education Commission (HEC) of Pakistan for carrying out this Ph.D. research work under “Indigenous 5000 Fellowship Program” and “International Research Support Initiative Program” are highly acknowledged.Peer reviewedPublisher PD
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