3,522 research outputs found

    The Middle Platonists: 80 B.C. to A.D. 220 

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    The Middle Platonists: 80 B.C. to A.D. 220  John M. Dillon  (Author), 1977   Table of Contents Preface Abbreviations 1 The Old Academy and the Themes of Middle Platonism 2 Antiochus of Ascalon: The Turn to Dogmatism 3 Platonism at Alexandria: Eudorus and Philo 4 Plutarch of Chaeroneia and the Origins of Second-Century Platonism 5 The Athenian School in the Second Century A.D. 6 The 'School of Gaius': Shadow and Substance 7 The Neopythagoreans 8 Some Loose Ends Bibliography Afterword General ..

    Charles Berlitz, Author of "Doomsday," Takes Predictions

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    Charles Berlitz, author of "Doomsday," makes predictions that life will cease after 2000 A.D

    THE FOOD INDUSTRY - 2000 A.D. REVISITED

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    What will be the nature of the food industry in the year 2000 A.D.? What will be the roles of retailers, wholesalers and manufacturers? The author presents his views of future food processing and distribution practices and thereby poses a challenge to the industry to maximize its opportunities for growth during the next three decades.Agribusiness,

    THE FOOD INDUSTRY - 2000 A.D. REVISITED

    No full text
    What will be the nature of the food industry in the year 2000 A.D.? What will be the roles of retailers, wholesalers and manufacturers? The author presents his views of future food processing and distribution practices and thereby poses a challenge to the industry to maximize its opportunities for growth during the next three decades

    Learning from biophysical heterogeneity: inductive use of case studies for maize cropping systems in Central America

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    Global society has become conscious that efforts towards securing food production will only be successful if agricultural production increases are obtained through mechanisms that ensure active regeneration of the natural resource base. Production options should be targeted in the sense of that their suitability to improve agricultural production and maintain natural resources is evaluated prior to their introduction. Biophysical targeting evaluates production options as a function of the spatial and temporal variability of climate conditions, in interaction with soil, crop characteristics and agronomic management strategies. This thesis contributes to the development of a system-based methodology for biophysical targeting. Cropping system simulation and weather generator tools are interfaced to geographical information systems. Inductive use of two case studies - a green manure cover crop and reduced tillage with residue management - helped to develop the methodology. Insight is gained into the regional potential for and the soil and climate conditions under which successful introduction of these production options may be achieved. The resulting information supports regional stakeholders involved in agriculture in their analysis and discussion, negotiation and decision-making concerning where to implement production systems. This process can improve the supply of appropriate agricultural production practices that enhance production and conserve soil and water resources

    Soft cliff retreat adjacent to coastal defences, with particular reference to Holderness and Christchurch Bay, UK

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    Coastal defences reduce sediment input and modify the sediment budget, usually resulting in a sediment deficit down-drift and an accumulation up-drift. This process results in set-back adjacent to defences. Three types of set-back were identified and these occur due to the:• terminal groyne effect, where defences stop or dramatically reduce erosion, induce a sediment deficit down-drift and cause an increase in retreat rate;• perceived terminal groyne effect, where defences stop or dramatically reduce erosion, and down-drift retreat rates remain the same or decrease;• initial groyne effect, where defences stop or dramatically reduce erosion, induce sediment accumulation up-drift and cause a decrease in retreat rate. Set-backs are found on defended coasts world-wide, and are complex evolving features dependent on numerous natural and anthropogenic factors.200 set-back sites were identified in England and Wales, half on cliffed coasts. The terminal groyne effect theory was investigated on 17 sites on the soft cliffs of Holderness, Christchurch Bay and north-east Norfolk, UK, all of which erode naturally at 0.5m/yr-2.0m/yr. Historical shoreline analysis and a history of human intervention was undertaken for each study region and site.For 13 out of the 17 case studies, a terminal groyne effect appeared to have occurred. As time passed and the magnitude of set-back increased, the terminal groyne effect became increasingly apparent. Where increased retreat resulted, the coast was affected for tens to thousands of metres down-drift. For the remaining case studies, a perceived terminal groyne effect occurred. An initial terminal groyne effect occurred at all sites.Longshore, the continued set-back caused outflanking of defences prompting emergency works, such as repeated defence extensions up and down-drift. Over several decades of set-back, the defences formed an artificial headlandand created a crenulate shaped embayment down-drift. The planform of an embayment expanded rapidly, then reduced to a steadier retreat rate.As shoreline management evolves from a highly defended to a less heavily managed coast, defence abandonment will result in rapid retreat. Set-backs may be created due to the juxtaposition of maintained and abandoned defences,as illustrated at Happisburgh, Norfolk. In the coming decades, set-backs, artificial headlands and the terminal groyne effect will remain important issues for shoreline management
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