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Author: Charles Alexander Douglas
Publisher:
ISBN:
Category : Airports
Languages : en
Pages : 364
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Book Description
Author: Charles Alexander Douglas
Publisher:
ISBN:
Category : Airports
Languages : en
Pages : 364
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Book Description
Author: Christine Roman-Lantzy
Publisher: American Foundation for the Blind
ISBN: 0891288295
Category : Education
Languages : en
Pages : 225
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Book Description
The current leading cause of visual impairment among children is not a disease or condition of the eyes, but cortical visual impairment (CVI)-also known as cerebral visual impairment-in which visual dysfunction is caused by damage or injury to the brain. The definition, nature, and treatment of CVI are the focus of great concern and widespread debate, and this complex condition poses challenges to professionals and families seeking to support the growth and development of visually impaired children. On the basis of more than 30 years' experience in working with hundreds of children of all ages with CVI, Christine Roman-Lantzy has developed a set of unique assessment tools and systematic, targeted principles whose use has helped children learn to use their vision more effectively. This one-of-a-kind resource provides readers with both a conceptual framework with which to understand working with CVI and concrete strategies to apply directly in their work.
Author: Robert W. Fenn
Publisher:
ISBN:
Category : Backscattering
Languages : en
Pages : 8
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Book Description
On the basis of present knowledge of the distribution of natural haze particles in the atmosphere, the relation between the back-scatter intensity and the visual range on the extinction coefficient has been analyzed. It can be shown that the various processes which cause the changes in visibility (increasing haze-particle number, change in haze particle-size distribution, etc.) result in rather different back-scatter conditions. Therefore, it cannot be expected that a unique relation between visibility and back-scatter signal can be found. A relation, visibility = f(back-scatter signal), with useful accuracy can be established only for specific atmospheric conditions; this relation, however, may be characteristic for certain geographical areas. These conclusions, derived from natural aerosol distributions and processes, are found to be in agreement with some published empirical data on scattering and visibility correlation. (Author).
Author: George Marsden Byram
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 62
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Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 380
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Book Description
Author: Robert D. Rowe
Publisher: Routledge
ISBN: 0429696930
Category : Political Science
Languages : en
Pages : 335
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Book Description
This book is an outcome of the Visual Values Workshop in 1982. It presents the ongoing research on state-of-the-art techniques and applications to address the human perception of changes in visual aesthetic resources and to assign psychological, social, and economic measures of value to visitors.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309048443
Category : Science
Languages : en
Pages : 465
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Book Description
Scenic vistas in most U.S. parklands are diminished by haze that reduces contrast, washes out colors, and renders distant landscape features indistinct or invisible. Protecting Visibility in National Parks and Wilderness Areas describes the current understanding of the nature and extent of haze in various regions of the United States. The book addresses the scientific and legal framework of efforts to protect and improve visibility, as well as methods for assessing the relative importance of anthropogenic emission sources that contribute to haze in national parks and for considering various alternative source control measures. The volume provides guidance on how to make progress toward the national goal of correcting and preventing visibility impairment due to human activities affecting large national parks and wilderness areas.
Author:
Publisher:
ISBN:
Category : Environmental impact statements
Languages : en
Pages : 458
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Book Description
Author: William C. Hinds
Publisher: John Wiley & Sons
ISBN: 1118591976
Category : Technology & Engineering
Languages : en
Pages : 411
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Book Description
The #1 guide to aerosol science and technology -now better than ever Since 1982, Aerosol Technology has been the text of choice among students and professionals who need to acquire a thorough working knowledge of modern aerosol theory and applications. Now revised to reflect the considerable advances that have been made over the past seventeen years across a broad spectrum of aerosol-related application areas - from occupational hygiene and biomedical technology to microelectronics and pollution control -this new edition includes: * A chapter on bioaerosols * New sections on resuspension, transport losses, respiratory deposition models, and fractal characterization of particles * Expanded coverage of atmospheric aerosols, including background aerosols and urban aerosols * A section on the impact of aerosols on global warming and ozone depletion. Aerosol Technology, Second Edition also features dozens of new, fully worked examples drawn from a wide range of industrial and research settings, plus new chapter-end practice problems to help readers master the material quickly.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 748
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Book Description
