Evaluating Airfield Capacity PDF Download

Author:
Publisher: Transportation Research Board
ISBN: 0309258731
Category : Transportation
Languages : en
Pages : 174

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At head of title: Airport Cooperative Research Program.

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309040361
Category : Nature
Languages : en
Pages : 172

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Book Description
When waterfowl began to die from selenium poisoning at Kesterson National Wildlife Refuge in California's San Joaquin Valley, considerable alarm arose among environmental and agricultural specialists. This new volume suggests that Kesterson is not a unique problem and the events there offer important lessons for the future. Irrigation-Induced Water Quality Problems uses the San Joaquin experience to suggest how we can prepare for similar problems elsewhere. As one committee member put it, "There will be elsewheres"â€"trace elements and organic contaminants are being concentrated by irrigation in many river basins. This book addresses how the Kesterson crisis developed, how irrigation can endanger water quality, and how economic, legal, and other factors impede our ability to respond to water quality problems. The committee explores how to study these problems, unraveling complex issues and clarifying the varying perspectives of farmers, environmentalists, scientists, and other key figures. This dispassionate analysis of a controversial topic will be useful to policymakers, resource managers, and agricultural specialists and farmers, as well as specialists in hydrology, water quality, irrigation, law, and environmental quality. It will also be useful as a case study in the environmental policy classroom.

Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309464102
Category : Technology & Engineering
Languages : en
Pages : 215

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Improvised explosive devices (IEDs) are a type of unconventional explosive weapon that can be deployed in a variety of ways, and can cause loss of life, injury, and property damage in both military and civilian environments. Terrorists, violent extremists, and criminals often choose IEDs because the ingredients, components, and instructions required to make IEDs are highly accessible. In many cases, precursor chemicals enable this criminal use of IEDs because they are used in the manufacture of homemade explosives (HMEs), which are often used as a component of IEDs. Many precursor chemicals are frequently used in industrial manufacturing and may be available as commercial products for personal use. Guides for making HMEs and instructions for constructing IEDs are widely available and can be easily found on the internet. Other countries restrict access to precursor chemicals in an effort to reduce the opportunity for HMEs to be used in IEDs. Although IED attacks have been less frequent in the United States than in other countries, IEDs remain a persistent domestic threat. Restricting access to precursor chemicals might contribute to reducing the threat of IED attacks and in turn prevent potentially devastating bombings, save lives, and reduce financial impacts. Reducing the Threat of Improvised Explosive Device Attacks by Restricting Access to Explosive Precursor Chemicals prioritizes precursor chemicals that can be used to make HMEs and analyzes the movement of those chemicals through United States commercial supply chains and identifies potential vulnerabilities. This report examines current United States and international regulation of the chemicals, and compares the economic, security, and other tradeoffs among potential control strategies.

Author: Mark A. Dutz
Publisher: World Bank Publications
ISBN: 1464812233
Category : Technology & Engineering
Languages : en
Pages : 94

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Book Description
While adoption of new technologies is understood to enhance long-term growth and average per-capita incomes, its impact on lower-skilled workers is more complex and merits clarification. Concerns abound that advanced technologies developed in high-income countries would inexorably lead to job losses of lower-skilled, less well-off workers and exacerbate inequality. Conversely, there are countervailing concerns that policies intended to protect jobs from technology advancement would themselves stultify progress and depress productivity. This book squarely addresses both sets of concerns with new research showing that adoption of digital technologies offers a pathway to more inclusive growth by increasing adopting firms’ outputs, with the jobs-enhancing impact of technology adoption assisted by growth-enhancing policies that foster sizable output expansion. The research reported here demonstrates with economic theory and data from Argentina, Brazil, Chile, Colombia and Mexico that lower-skilled workers can benefit from adoption of productivity-enhancing technologies biased towards skilled workers, and often do. The inclusive jobs outcomes arise when the effects of increased productivity and expanding output overcome the substitution of workers for technology. While the substitution effect replaces some lower-skilled workers with new technology and more highly-skilled labor, the output effect can lead to an increase in the total number of jobs for less-skilled workers. Critically, output can increase sufficiently to increase jobs across all tasks and skill types within adopting firms, including jobs for lower-skilled workers, as long as lower-skilled task content remains complementary to new technologies and related occupations are not completely automated and replaced by machines. It is this channel for inclusive growth that underlies the power of pro-competitive enabling policies and institutions—such as regulations encouraging firms to compete and policies supporting the development of skills that technology augments rather than replaces—to ensure that the positive impact of technology adoption on productivity and lower-skilled workers is realized.

Author: Peter Frederick Lagasse
Publisher:
ISBN:
Category : Riparian areas
Languages : en
Pages : 268

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"TRB's National Cooperative Highway Research Program (NCHRP) Report 822: Evaluation and Assessment of Environmentally Sensitive Stream Bank Protection Measures evaluates and assesses existing guidelines for the design, installation, monitoring, and maintenance of environmentally sensitive stream bank stabilization and protection measures, and develops quantitative engineering design guidance for selected treatments. Updated design guidelines for three widely used treatments are presented: live siltation and live staking with a rock toe, vegetated mechanically stabilized earth, and vegetated rip rap. A compendium of field data, documentation, and photographs complement the report. The compendium is available as a DVD and available for download from TRB’s website as an ISO image."--Publisher’s description.

Author: Eric Adam Ziering
Publisher: Transportation Research Board
ISBN: 0309098726
Category : Technology & Engineering
Languages : en
Pages : 69

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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309038405
Category : Science
Languages : en
Pages : 128

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There is growing enthusiasm in the scientific community about the prospect of mapping and sequencing the human genome, a monumental project that will have far-reaching consequences for medicine, biology, technology, and other fields. But how will such an effort be organized and funded? How will we develop the new technologies that are needed? What new legal, social, and ethical questions will be raised? Mapping and Sequencing the Human Genome is a blueprint for this proposed project. The authors offer a highly readable explanation of the technical aspects of genetic mapping and sequencing, and they recommend specific interim and long-range research goals, organizational strategies, and funding levels. They also outline some of the legal and social questions that might arise and urge their early consideration by policymakers.

Author: Kristoffer Bjärkefur
Publisher: World Bank Publications
ISBN: 1464816956
Category : Business & Economics
Languages : en
Pages : 388

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Book Description
Development Research in Practice leads the reader through a complete empirical research project, providing links to continuously updated resources on the DIME Wiki as well as illustrative examples from the Demand for Safe Spaces study. The handbook is intended to train users of development data how to handle data effectively, efficiently, and ethically. “In the DIME Analytics Data Handbook, the DIME team has produced an extraordinary public good: a detailed, comprehensive, yet easy-to-read manual for how to manage a data-oriented research project from beginning to end. It offers everything from big-picture guidance on the determinants of high-quality empirical research, to specific practical guidance on how to implement specific workflows—and includes computer code! I think it will prove durably useful to a broad range of researchers in international development and beyond, and I learned new practices that I plan on adopting in my own research group.†? —Marshall Burke, Associate Professor, Department of Earth System Science, and Deputy Director, Center on Food Security and the Environment, Stanford University “Data are the essential ingredient in any research or evaluation project, yet there has been too little attention to standardized practices to ensure high-quality data collection, handling, documentation, and exchange. Development Research in Practice: The DIME Analytics Data Handbook seeks to fill that gap with practical guidance and tools, grounded in ethics and efficiency, for data management at every stage in a research project. This excellent resource sets a new standard for the field and is an essential reference for all empirical researchers.†? —Ruth E. Levine, PhD, CEO, IDinsight “Development Research in Practice: The DIME Analytics Data Handbook is an important resource and a must-read for all development economists, empirical social scientists, and public policy analysts. Based on decades of pioneering work at the World Bank on data collection, measurement, and analysis, the handbook provides valuable tools to allow research teams to more efficiently and transparently manage their work flows—yielding more credible analytical conclusions as a result.†? —Edward Miguel, Oxfam Professor in Environmental and Resource Economics and Faculty Director of the Center for Effective Global Action, University of California, Berkeley “The DIME Analytics Data Handbook is a must-read for any data-driven researcher looking to create credible research outcomes and policy advice. By meticulously describing detailed steps, from project planning via ethical and responsible code and data practices to the publication of research papers and associated replication packages, the DIME handbook makes the complexities of transparent and credible research easier.†? —Lars Vilhuber, Data Editor, American Economic Association, and Executive Director, Labor Dynamics Institute, Cornell University

Author: Iffat Mahmud
Publisher: World Bank Publications
ISBN: 1464817642
Category : Medical
Languages : en
Pages : 149

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Book Description
Bangladesh’s vulnerability to the effects of climate change is well documented; the evidence on the direct relationship between climate change and health focusing on Bangladesh is less so. Global evidence suggests intensification of climate change will increase incidences and variations of infectious diseases. Climate Afflictions contributes to filling this important knowledge gap. It includes a systematic review of existing literature on the relationship between climate change and health, distinguishing between climate change and variability. It establishes the relationship between climate variability and infectious diseases and mental health using household-level data. It also documents changes in climate patterns in Bangladesh over the past 44 years using monthly meteorological data. Overall, the report finds a strong relationship between infectious diseases, mental health, and climate variability. Based on analyses of primary data, it concludes that the prevalence of vector-borne diseases is higher during the monsoon than dry seasons, while the opposite is true for waterborne illnesses. Meanwhile, rising humidity and mean temperature are positively associated with respiratory illnesses. In terms of mental health conditions, while temperature is negatively correlated to depression, anxiety among individuals is likely to increase with temperature and humidity. Irrespective of the season, morbidity and mental health issues are highest in densely populated urban hubs such as Dhaka and Chattogram compared to other areas. The mean temperature in Bangladesh has increased by 0.5°C between 1976 and 2019. Overall, summers are becoming hotter and longer, the monsoon season is extending, and winters are becoming warmer. Consequently, Bangladesh is on the path to losing its distinct seasonality. With global warming progressing faster than initially projected, stresses on human health may be elevated to an extent that can overburden the systems to a point at which adaptation will no longer be possible. Countries susceptible to climate change, like Bangladesh, need to be better prepared.

Author: Nikiforos Stamatiadis
Publisher: Transportation Research Board
ISBN: 0309117917
Category : Context sensitive solutions (Transportation)
Languages : en
Pages : 168

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Book Description
At head of title: National Cooperative Highway Research Program.