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Aircraft Design for Reduced Climate Impact
Aircraft affect global climate through emissions of greenhouse gases and their precursors and by altering cirrus cloudiness. Changes in operations and design of future aircraft may be necessary to meet goals for limiting climate change. One method for reducing climate impacts involves designing aircraft to fly at altitudes where the impacts of NOx emissions are less severe and persistent contrail formation is less likely. By considering these altitude effects and additionally applying climate mitigation technologies, impacts can be reduced by 45-70% with simultaneous savings in total operating costs. Uncertainty is assessed, demonstrating that relative climate impact savings can be expected despite large scientific uncertainties. Strategies for improving climate performance of existing aircraft are also explored, revealing potential climate impact savings of 20-40%, traded for a 2% increase in total operating costs and reduced maximum range.
The power of the Internet for learning moving from promise to practice : report of the Web-based Education Commission
Federal Commission offers suggestions regarding electronic learning.
Aircraft Drag Reduction Through Extended Formation Flight
Formation flight has the potential to significantly reduce the fuel consumption of long range flights, even with existing aircraft. This research explores a safer approach to formation flying of transport aircraft, which we term extended formation flight. Extended formations take advantage of the persistence of cruise wakes and extend the streamwise separation between the aircraft by at least five wingspans. Classical aerodynamic theory suggests that the total induced drag of the formation should not change as the streamwise separation is increased, but the large separation distances of extended formation flight violate the simple assumptions of these theorems. At large distances, considerat...
Euroshock
The inside story of the unprecedented restructuring of Greece’s debt in 2012—the largest restructuring in history—and how the Eurozone was stabilized and Greece was saved from exit from the Euro and economic calamity. In the fall of 2009, the world economy was beginning to recover from the global financial crisis that had shaken global markets and had led to a sharp recession. At the same time, Europe was entering a new phase of economic stress. By the spring of 2011, the European economy had exploded into a full-blown crisis with Greece at the center. The euro, a currency just over a decade old, was under severe pressure and there was growing speculation about Greece leaving the Eurozone and thereby fracturing the common currency, leading potentially to an unraveling of the euro. Against this backdrop, urgent negotiations were launched to pull Greece and Europe back from the brink of disaster. This is the inside story of those negotiations.
Aircraft Design for Reduced Climate Impact
Aircraft affect global climate through emissions of greenhouse gases and their precursors and by altering cirrus cloudiness. Changes in operations and design of future aircraft may be necessary to meet goals for limiting climate change. One method for reducing climate impacts involves designing aircraft to fly at altitudes where the impacts of NOx emissions are less severe and persistent contrail formation is less likely. By considering these altitude effects and additionally applying climate mitigation technologies, impacts can be reduced by 45-70% with simultaneous savings in total operating costs. Uncertainty is assessed, demonstrating that relative climate impact savings can be expected despite large scientific uncertainties. Strategies for improving climate performance of existing aircraft are also explored, revealing potential climate impact savings of 20-40%, traded for a 2% increase in total operating costs and reduced maximum range.
Blockchain Hurricane
This book gives business decision makers and students a clear overview of the history, current applications, and future potential of distributed ledgers and cryptocurrency. The hype around blockchain technology is matched only by the innovation it inspires and the skepticism it provokes. This book gives business decision makers and students a clear overview of the history, current applications, and future potential of distributed ledgers and cryptocurrency. It explores strengths and weaknesses, emerging opportunities, and perceived threats. Technical frameworks are presented in a business context to help strategists understand the risks and rewards of different approaches to blockchain implementation, and the decision factors in determining whether this is a viable solution to the problem at hand.
Emily and Daisy
This is a love story. A love story with a difference that lives across time and space and explores the ways in which the accidents of love can combine in the forging of a life. Rural Devon, World War II. In her last year of school and living above the family shop, Daisy studies for her exams and keeps her journal. After he paints a watercolour portrait of her, she falls for James, a young army captain. Paris, the end of the twentieth century. Emily lives comfortably with her father, having just left university and unsure of what comes next. Upon discovering Daisy’s portrait, she becomes enchanted by the young woman who seems to have inexplicably disappeared from her uncle’s life. Campiston house in rural Sussex connects the two women. In her teens Emily spends her Summer vacations with her great uncle, but he never speaks of Daisy. Later, James wills the house to Emily who pursues the mystery of Daisy’s disappearance. Their lives may have different trajectories, but something resonates with Emily as she delves deeper into the traces of Daisy’s world. Each revelation demands that Emily see herself and her world in new ways.
Emily Davis
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