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1000 tulosta hakusanalla David Wind

Estimation of Uncertainty of Wind Energy Predictions
Currently, a new generation of fuel-efficient ships, which use wind force in addition to conventional propulsion technology, is being developed. This study describes a mathematical method for a probabilistic estimate of the wind propulsion force on a ship route. The method is based on quantile regression, which makes it suitable for various ship routes with variable weather conditions. Furthermore, the author takes different macro weather situations into account for the calculation of the statistical distributions. He validates the results for a multi-purpose carrier, a ship route in the North Atlantic Ocean and archived weather forecasts. It showed that the wind force can be estimated more accurately if the macro weather situation is taken into account properly.
New Advances in Wind Energy Technologies

New Advances in Wind Energy Technologies

David Wekesa

LAP Lambert Academic Publishing
2019
pokkari
There is a pressing environmental need to reduce global greenhouse gas emissions through technologies that are capable of extracting energy from the environment whilst being non-polluting and sustainable. New advances in wind energy technologies for improving aerodynamic performance of vertical axis wind turbines (VAWTs) has been the focus in the 21st century. The book presents both numerical and experimental wind tunnel approaches to provide a detailed understanding of the aerodynamic performance of the small-scale wind turbines under unsteady winds. Computational Fluid Dynamics (CFD) models validated against the experimental data are utilized to provide additional insight into VAWT behavior. The experimental design setup and use of a wind tunnel-based performance testing assembly is described in detail. The apparatus are described for the various components of the testing rig including the rotor assembly, the measurement assemblies, the braking system assemblies, and the development of the data logging program. The analysis is key for wind energy stakeholders to inform investment requiring designs for wind turbine blades, reflecting realistic unsteady wind operating conditions.
Windows and Mirrors

Windows and Mirrors

Jay David Bolter; Diane Gromala

MIT Press
2005
pokkari
The experience of digital art and how it is relevant to information technology.In Windows and Mirrors: Interaction Design, Digital Art, and the Myth of Transparency, Jay David Bolter and Diane Gromala argue that, contrary to Donald Norman's famous dictum, we do not always want our computers to be invisible "information appliances." They say that a computer does not feel like a toaster or a vacuum cleaner; it feels like a medium that is now taking its place beside other media like printing, film, radio, and television. The computer as medium creates new forms and genres for artists and designers; Bolter and Gromala want to show what digital art has to offer to Web designers, education technologists, graphic artists, interface designers, HCI experts, and, for that matter, anyone interested in the cultural implications of the digital revolution.In the early 1990s, the World Wide Web began to shift from purely verbal representation to an experience for the user in which form and content were thoroughly integrated. Designers brought their skills and sensibilities to the Web, as well as a belief that a message was communicated through interplay of words and images. Bolter and Gromala argue that invisibility or transparency is only half the story; the goal of digital design is to establish a rhythm between transparency-made possible by mastery of techniques-and reflection-as the medium itself helps us understand our experience of it.The book examines recent works of digital art from the Art Gallery at SIGGRAPH 2000. These works, and their inclusion in an important computer conference, show that digital art is relevant to technologists. In fact, digital art can be considered the purest form of experimental design; the examples in this book show that design need not deliver information and then erase itself from our consciousness but can engage us in an interactive experience of form and content.
Creative Haven Vintage Christmas Windows Coloring Book
Thirty-one cheerfully designed Christmas windows will lead colorists to new heights of creativity! From the shoe store to the music shop, beauty parlor, bakery, and other emporiums, these old-style window treatments prove that the holidays can indeed be a year-round passion. Illustrations are printed on one side of the perforated pages for easy removal and display. Specially designed for experienced colorists, Vintage Christmas Windows and other Creative Haven® adult coloring books offer an escape to a world of inspiration and artistic fulfillment. Each title is also an effective and fun-filled way to relax and reduce stress.
The Dogs of Windcutter Down

The Dogs of Windcutter Down

David Kennard

Headline Book Publishing
2006
pokkari
'There is no good flock without a good shepherd, and no good shepherd without good dogs.' These age-old words of wisdom have always guided Devon sheep farmer David Kennard. But as he battles to save his farm from extinction, they resonate more loudly - and unexpectedly - than ever. The storm clouds are already gathering when Borough Farm suffers a succession of potentially disastrous setbacks. Suddenly the Kennard family's idyllic life is under threat. Will David achieve the seemingly impossible and make a living through farming sheep in the 21st century?As he fights for survival, David knows he will be able to rely - as always - on his faithful sheepdogs but even he is surprised when the dogs prove to be Borough Farm's secret weapon...
The Iron Horse and the Windy City

The Iron Horse and the Windy City

David M. Young

Northern Illinois University Press
2005
sidottu
With the coming of railroads, upstart Chicago quickly became the Midwest's center for commerce and trade, overtaking its older rival, St. Louis. The first tracks to link the East coast with the West ran through Chicago, and within a few decades the city grew to be the hub of an immense transportation network that stretched across the nation. Noted transportation writer David M. Young vividly tells how railroads created and shaped Chicago, from the earliest times to the present. He shows how the expansion of rail lines promoted the growth of the suburbs, and how Chicago's burgeoning manufacturing hub became home to such corporate giants as Cyrus McCormick's harvester operation and catalogue houses Montgomery Ward; Spiegel; and Sears, Roebuck and Company. For the most part, the railroad companies that schemed to bypass Chicago failed. As the hub of a vast transportation network, Chicago experienced many tragic accidents at rail crossings. One of the first books to deal with the history of accidents and issues of safety, The Iron Horse and the Windy City reveals how Chicago eventually forced railroad companies to eliminate dangerous crossings by installing barriers or by raising tracks above street level. Railroad magnates, entrepreneurs, and ordinary people come to life in this first comprehensive account of the impact of railroads on Chicago. Transportation historians and general readers interested in Chicago will find it both essential and engaging.
This House Had Windows

This House Had Windows

David Scott 1910- Blackhall

Hassell Street Press
2021
sidottu
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This House Had Windows

This House Had Windows

David Scott 1910- Blackhall

Hassell Street Press
2021
nidottu
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Last Post for the Winds of Freedom

Last Post for the Winds of Freedom

David De L'Avern

Authorhouse UK
2008
pokkari
In 'Last Post For The Winds of Freedom', the story tells how former members of the Navy, Chip Woodingdean and Fred Newman, become involved in a civil war at home that escalates into a war of independence against the European Republic. Their company 'Golden Arrow Marine' and its single asset, the Privateer, which they jointly own carries cargoes at high speed between Britain and the Channel ports. They witness an unprovoked attack upon two naval vessels in the Thames estuary and pick up the survivors knowing full well that there is not a national agency within a hundred miles capable making a rescue. Later, Chip and Fred survive the transition from being a North Sea trading enterprise into a well armed naval transport fitted with the latest warfare technology, and become embroiled in the wider implications of a rebellion at home. Narrowly escaping arrest and the impounding of their vessel at Portsmouth they receive orders to undertake a mission of the utmost secrecy. While at the same time, the Chiefs of Staff face the unenviable burden of re-building the nation's defences from scratch, with the onset of a conflict that bears all the hallmarks of becoming a bitter war of independence.