Technology for a Quieter America

Technology for a Quieter America
Author: National Academy of Engineering
Publisher: National Academies Press
Total Pages: 210
Release: 2010-10-30
Genre: Technology & Engineering
ISBN: 0309156327

Exposure to noise at home, at work, while traveling, and during leisure activities is a fact of life for all Americans. At times noise can be loud enough to damage hearing, and at lower levels it can disrupt normal living, affect sleep patterns, affect our ability to concentrate at work, interfere with outdoor recreational activities, and, in some cases, interfere with communications and even cause accidents. Clearly, exposure to excessive noise can affect our quality of life. As the population of the United States and, indeed, the world increases and developing countries become more industrialized, problems of noise are likely to become more pervasive and lower the quality of life for everyone. Efforts to manage noise exposures, to design quieter buildings, products, equipment, and transportation vehicles, and to provide a regulatory environment that facilitates adequate, cost-effective, sustainable noise controls require our immediate attention. Technology for a Quieter America looks at the most commonly identified sources of noise, how they are characterized, and efforts that have been made to reduce noise emissions and experiences. The book also reviews the standards and regulations that govern noise levels and the federal, state, and local agencies that regulate noise for the benefit, safety, and wellness of society at large. In addition, it presents the cost-benefit trade-offs between efforts to mitigate noise and the improvements they achieve, information sources available to the public on the dimensions of noise problems and their mitigation, and the need to educate professionals who can deal with these issues. Noise emissions are an issue in industry, in communities, in buildings, and during leisure activities. As such, Technology for a Quieter America will appeal to a wide range of stakeholders: the engineering community; the public; government at the federal, state, and local levels; private industry; labor unions; and nonprofit organizations. Implementation of the recommendations in Technology for a Quieter America will result in reduction of the noise levels to which Americans are exposed and will improve the ability of American industry to compete in world markets paying increasing attention to the noise emissions of products.

Traffic Flow Dynamics

Traffic Flow Dynamics
Author: Martin Treiber
Publisher: Springer Science & Business Media
Total Pages: 505
Release: 2012-10-11
Genre: Science
ISBN: 3642324592

This textbook provides a comprehensive and instructive coverage of vehicular traffic flow dynamics and modeling. It makes this fascinating interdisciplinary topic, which to date was only documented in parts by specialized monographs, accessible to a broad readership. Numerous figures and problems with solutions help the reader to quickly understand and practice the presented concepts. This book is targeted at students of physics and traffic engineering and, more generally, also at students and professionals in computer science, mathematics, and interdisciplinary topics. It also offers material for project work in programming and simulation at college and university level. The main part, after presenting different categories of traffic data, is devoted to a mathematical description of the dynamics of traffic flow, covering macroscopic models which describe traffic in terms of density, as well as microscopic many-particle models in which each particle corresponds to a vehicle and its driver. Focus chapters on traffic instabilities and model calibration/validation present these topics in a novel and systematic way. Finally, the theoretical framework is shown at work in selected applications such as traffic-state and travel-time estimation, intelligent transportation systems, traffic operations management, and a detailed physics-based model for fuel consumption and emissions.

Acoustical Materials

Acoustical Materials
Author: Pranab Saha
Publisher: SAE International
Total Pages: 320
Release: 2021-08-11
Genre: Technology & Engineering
ISBN: 0768099463

What is acoustics? What is noise? How is sound measured? How can the vehicle noise be reduced using sound package treatments? Pranab Saha answers these and more in Acoustical Materials. Acoustics is the science of sound, including its generation, propagation, and effect. Although the propulsion sources of internal combustion engine (ICE) vehicles and electric motor-powered vehicles (EV) are different and therefore their propulsion noises are different, both types of vehicles have shared noise concerns: Tire and road noise Wind noise Vehicle noise and vibration issues have been there almost from the inception of vehicle manufacturing. The noise problem in a vehicle is very severe and is difficult to solve only by modifying the sources of noise and vibration. Sound package treatments address the noise and vibration issues along the path to reduce in-cabin noise. In Acoustical Materials, readers will grasp the science of reducing sound and vibration using sound absorbers, sound barriers, and vibration dampers. Sound provides information on the proper operation of the vehicle, but if unchecked, can detract from the consumer experience within the vehicle and create noise pollution outside the vehicle. Acoustical Materials provides essential information on the basics of sound, vehicle noise source, how these are measured, how vehicle owners perceive sound, and ultimately, how to solve noise problems in vehicles using sound package materials.

Made to Break

Made to Break
Author: Giles Slade
Publisher: Harvard University Press
Total Pages: 337
Release: 2009-06-30
Genre: Technology & Engineering
ISBN: 0674043758

Made to Break is a history of twentieth-century technology as seen through the prism of obsolescence. Giles Slade explains how disposability was a necessary condition for America's rejection of tradition and our acceptance of change and impermanence. This book gives us a detailed and harrowing picture of how, by choosing to support ever-shorter product lives, we may well be shortening the future of our way of life as well.

Beyond Engineering

Beyond Engineering
Author: Robert Pool
Publisher: Oxford University Press
Total Pages: 369
Release: 1997-07-17
Genre: Technology & Engineering
ISBN: 0198026722

We have long recognized technology as a driving force behind much historical and cultural change. The invention of the printing press initiated the Reformation. The development of the compass ushered in the Age of Exploration and the discovery of the New World. The cotton gin created the conditions that led to the Civil War. Now, in Beyond Engineering, science writer Robert Pool turns the question around to examine how society shapes technology. Drawing on such disparate fields as history, economics, risk analysis, management science, sociology, and psychology, Pool illuminates the complex, often fascinating interplay between machines and society, in a book that will revolutionize how we think about technology. We tend to think that reason guides technological development, that engineering expertise alone determines the final form an invention takes. But if you look closely enough at the history of any invention, says Pool, you will find that factors unrelated to engineering seem to have an almost equal impact. In his wide-ranging volume, he traces developments in nuclear energy, automobiles, light bulbs, commercial electricity, and personal computers, to reveal that the ultimate shape of a technology often has as much to do with outside and unforeseen forces. For instance, Pool explores the reasons why steam-powered cars lost out to internal combustion engines. He shows that the Stanley Steamer was in many ways superior to the Model T--it set a land speed record in 1906 of more than 127 miles per hour, it had no transmission (and no transmission headaches), and it was simpler (one Stanley engine had only twenty-two moving parts) and quieter than a gas engine--but the steamers were killed off by factors that had little or nothing to do with their engineering merits, including the Stanley twins' lack of business acumen and an outbreak of hoof-and-mouth disease. Pool illuminates other aspects of technology as well. He traces how seemingly minor decisions made early along the path of development can have profound consequences further down the road, and perhaps most important, he argues that with the increasing complexity of our technological advances--from nuclear reactors to genetic engineering--the number of things that can go wrong multiplies, making it increasingly difficult to engineer risk out of the equation. Citing such catastrophes as Bhopal, Three Mile Island, the Exxon Valdez, the Challenger, and Chernobyl, he argues that is it time to rethink our approach to technology. The days are gone when machines were solely a product of larger-than-life inventors and hard-working engineers. Increasingly, technology will be a joint effort, with its design shaped not only by engineers and executives but also psychologists, political scientists, management theorists, risk specialists, regulators and courts, and the general public. Whether discussing bovine growth hormone, molten-salt reactors, or baboon-to-human transplants, Beyond Engineering is an engaging look at modern technology and an illuminating account of how technology and the modern world shape each other.

Protecting National Park Soundscapes

Protecting National Park Soundscapes
Author: John A. Volpe National Transportation Systems Center
Publisher: National Academies Press
Total Pages: 61
Release: 2013-07-04
Genre: Technology & Engineering
ISBN: 0309285429

America's national parks provide a wealth of experiences to millions of people every year. What visitors see-landscapes, wildlife, cultural activities-often lingers in memory for life. And what they hear adds a dimension that sight alone cannot provide. Natural sounds can dramatically enhance visitors' experience of many aspects of park environments. In some settings, such as the expanses of Yellowstone National Park, they can even be the best way to enjoy wildlife, because animals can be heard at much greater distances than they can be seen. Sounds can also be a natural complement to natural scenes, whether the rush of water over a rocky streambed or a ranger's explanation of a park's history. In other settings, such as the New Orleans Jazz National Historical Park, sounds are the main reason for visiting a park. The acoustical environment is also important to the well-being of the parks themselves. Many species of wildlife depend on their hearing to find prey or avoid predators. If they cannot hear, their survival is jeopardized-and the parks where they live may in turn lose part of their natural heritage. For all these reasons it is important to be aware of noise (defined as unwanted sound, and in this case usually generated by humans or machinery), which can degrade the acoustical environment, or soundscape, of parks. Just as smog smudges the visual horizon, noise obscures the listening horizon for both visitors and wildlife. This is especially true in places, such as remote wilderness areas, where extremely low sound levels are common. The National Park Service (NPS) has determined that park facilities, operations, and maintenance activities produce a substantial portion of noise in national parks and thus recognizes the need to provide park managers with guidance for protecting the natural soundscape from such noise. Therefore, the focus of the workshop was to define what park managers can do to control noise from facilities, operations, and maintenance, and not on issues such as the effects of noise on wildlife, noise metrics, and related topics. To aid in this effort, NPS joined with the National Academy of Engineering (NAE) and with the US Department of Transportation's John A. Volpe National Transportation Systems Center to hold a workshop to examine the challenges and opportunities facing the nation's array of parks. Entitled "Protecting National Park Soundscapes: Best Available Technologies and Practices for Reducing Park- Generated Noise," the workshop took place October 3-4, 2012, at NPS's Natural Resource Program Center in Fort Collins, Colorado. Protecting National Park Soundscapes is a summary of the workshop.

Environmental Noise Control

Environmental Noise Control
Author: Naveen Garg
Publisher: Springer Nature
Total Pages: 519
Release: 2022-03-31
Genre: Technology & Engineering
ISBN: 3030878287

This book provides a concise and up-to-date overview of environmental noise control issues, utilizing specific case studies from India to help explore noise mapping and monitoring, impact analysis, and policy, among other relevant topics. The book provides an extensive review of recent studies, including references, and describes the latest noise monitoring structures. It also addresses heretofore under-emphasized topics, including but not limited to acoustic metrology, Multi Attribute Decision Making (MADM) techniques, and sound insulation utilizing passive control strategies.

The Flickering Mind

The Flickering Mind
Author: Todd Oppenheimer
Publisher: Random House
Total Pages: 523
Release: 2007-12-18
Genre: Education
ISBN: 0307432211

The Flickering Mind, by National Magazine Award winner Todd Oppenheimer, is a landmark account of the failure of technology to improve our schools and a call for renewed emphasis on what really works. American education faces an unusual moment of crisis. For decades, our schools have been beaten down by a series of curriculum fads, empty crusades for reform, and stingy funding. Now education and political leaders have offered their biggest and most expensive promise ever—the miracle of computers and the Internet—at a cost of approximately $70 billion just during the decade of the 1990s. Computer technology has become so prevalent that it is transforming nearly every corner of the academic world, from our efforts to close the gap between rich and poor, to our hopes for school reform, to our basic methods of developing the human imagination. Technology is also recasting the relationships that schools strike with the business community, changing public beliefs about the demands of tomorrow’s working world, and reframing the nation’s systems for researching, testing, and evaluating achievement. All this change has led to a culture of the flickering mind, and a generation teetering between two possible futures. In one, youngsters have a chance to become confident masters of the tools of their day, to better address the problems of tomorrow. Alternatively, they can become victims of commercial novelties and narrow measures of ability, underscored by misplaced faith in standardized testing. At this point, America’s students can’t even make a fair choice. They are an increasingly distracted lot. Their ability to reason, to listen, to feel empathy, is quite literally flickering. Computers and their attendant technologies did not cause all these problems, but they are quietly accelerating them. In this authoritative and impassioned account of the state of education in America, Todd Oppenheimer shows why it does not have to be this way. Oppenheimer visited dozens of schools nationwide—public and private, urban and rural—to present the compelling tales that frame this book. He consulted with experts, read volumes of studies, and came to strong and persuasive conclusions: that the essentials of learning have been gradually forgotten and that they matter much more than the novelties of technology. He argues that every time we computerize a science class or shut down a music program to pay for new hardware, we lose sight of what our priority should be: “enlightened basics.” Broad in scope and investigative in treatment, The Flickering Mind will not only contribute to a vital public conversation about what our schools can and should be—it will define the debate.

Basic Concepts in Environmental Biotechnology

Basic Concepts in Environmental Biotechnology
Author: Neetu Sharma
Publisher: CRC Press
Total Pages: 300
Release: 2021-09-08
Genre: Medical
ISBN: 1000431193

The book includes current and emerging concepts in the areas of environmental biotechnology such as pollution sources, control and measurement, solid waste management, bioremediation, biofuels, biosensors, bioleaching, conservation biotechnology and more. The book also includes recent innovations made in this field and incorporates case studies to help in understanding the concepts. This book applies principles from multidisciplinary sciences of environmental engineering, metabolic engineering, rDNA technology and omics to study the role of microbes and plants in tackling environmental issues. It also includes content related to risk assessment and environmental management systems. Each chapter provides problems and solutions of different topics with diagrammatic illustrations and tables for students, researchers and other professionals in environmental biotechnology. Explores cutting-edge technologies, including nanotechnology-based bioremediation, value-added products from waste and emerging techniques related to environmental risk assessment and monitoring Reviews the current methods being applied in the environment field for pollution control, waste management, biodegradation of organic and inorganic pollutants and so on Provides in-depth knowledge of the latest advancements in the field of environmental biotechnology such as bioleaching, biomining and advances in biotechnology-based conservation of biodiversity Introduces undergraduate and post-graduate students to basic concepts of environmental biotechnology and allied fields Discusses different products such as biofuels, biopolymers and biosensors that are being produced using biotechnological methods, thus contributing towards the goal of sustainable development Dr. Neetu Sharma is Assistant Professor in the Department of Biotechnology, GGDSD College, Chandigarh, India. The main thrust of her research centers on biotechnology, bioremediation and nanotechnology. Abhinashi Singh Sodhi is Assistant Professor in the Department of Biotechnology, GGDSD College, Chandigarh, India. His current research focuses on waste reduction, valorization and bioproduct formation. Dr. Navneet Batra is Associate Professor and Head, Department of Biotechnology, GGDSD College, Chandigarh, India. He has extensive academic and research experience of over 20 years with specialization in biotechnology and biochemical engineering.