Download or read book Developing a Suite of Ballistic Test Methods in ASTM E54 04 for Better Harmonization and Reuse in Various Ballistic Resistance Performance Standards written by Mark E. Greene and published by . This book was released on 2018 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Institute of Justice (NIJ) develops performance standards for the unique equipment used by law enforcement and corrections agencies for testing and certification of equipment to ensure it is safe and effective. NIJ published the first performance standard for ballistic-resistant police body armor in 1972 and established body armor conformance testing in the late 1970s. The NIJ Compliance Testing Program ensures that body armor purchased and used by law enforcement in the United States meets minimum performance requirements as demonstrated through standardized ballistic testing to the current NIJ Standard 0101.06, Ballistic Resistance of Body Armor , published in 2008. NIJ is presently working on its seventh revision to its performance standard for ballistic-resistant body armor, NIJ Standard 0101.07, anticipated to be published in 2019. The updated standard will include improved test methods for female body armor and updated protection levels for rifle threats. NIJ and the U.S. Army have been cooperating to harmonize laboratory test procedures and practices in ASTM Subcommittee E54.04 Personal Protective Equipment (PPE). Unlike the current and previous versions of the NIJ standard, which have been comprehensive, standalone documents, revision 0101.07 will incorporate by reference a suite of standardized test methods and practices developed in ASTM E54.04. Incorporation of relevant ASTM standards by reference into NIJ standards and U.S. Army requirements and testing documents, for example, affords the opportunity to harmonize laboratory test procedures and practices for both law enforcement and military ballistic-resistant armor and other ballistic-resistant equipment while providing those end-user communities with ultimate control over product specifications, such as the specific threats against which their equipment must protect.
Download or read book A Residual Mass Ballistic Testing Method to Compare Armor Materials Or Components Residual Mass Ballistic Testing Method written by Benjamin Langhorst and published by . This book was released on 2014 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: A statistics based ballistic test method is presented for use when comparing multiple groups of test articles of unknown relative ballistic perforation resistance. The method is intended to be more efficient than many traditional methods for research and development testing. To establish the validity of the method, it is employed in this study to compare test groups of known relative ballistic performance. Multiple groups of test articles were perforated using consistent projectiles and impact conditions. Test groups were made of rolled homogeneous armor (RHA) plates and differed in thickness. After perforation, each residual projectile was captured behind the target and its mass was measured. The residual masses measured for each test group were analyzed to provide ballistic performance rankings with associated confidence levels. When compared to traditional V50 methods, the residual mass (RM) method was found to require fewer test events and be more tolerant of variations in impact conditions.
Download or read book Standard Test Method for Collection of Ballistic Limit Data for Ballistic resistant Torso Body Armor and Shoot Packs written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polyesters and Polyamides written by B L Deopura and published by Elsevier. This book was released on 2008-06-17 with total page 631 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyesters and polyamides remain the most used group of synthetic fibres. This authoritative book reviews methods of their production, ways of improving their functionality and their wide range of applications. The first part of the book describes raw materials and manufacturing processes, including environmental issues. Part two considers ways of improving the functionality of polyester and polyamide fibres, including blending, weaving, coloration and other finishing techniques as well as new techniques such as nanotechnology. The final part of the book reviews the range of uses of these important fibres, from apparel and sportswear to automotive, medical and civil engineering applications. With its distinguished editors and international team of contributors, Polyesters and polyamides is a standard reference for all those using this important group of fibres. Reviews the chemical and physical properties of each fibre and their manufacture Analyses how the functionality of polyester and polyamides can be improved Provides examples of how the fibres are used in applications
Download or read book Preparing for the Future of Artificial Intelligence written by Committee on Technology National Science and Technology Council, Committee on Technology and published by Createspace Independent Publishing Platform. This book was released on 2016-10-30 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Artificial Intelligence (AI) technology have opened up new markets and new opportunities for progress in critical areas such as health, education, energy, and the environment. In recent years, machines have surpassed humans in the performance of certain specific tasks, such as some aspects of image recognition. Experts forecast that rapid progress in the field of specialized artificial intelligence will continue. Although it is very unlikely that machines will exhibit broadly-applicable intelligence comparable to or exceeding that of humans in the next 20 years, it is to be expected that machines will reach and exceed human performance on more and more tasks. As a contribution toward preparing the United States for a future in which AI plays a growing role, this report surveys the current state of AI, its existing and potential applications, and the questions that are raised for society and public policy by progress in AI. The report also makes recommendations for specific further actions by Federal agencies and other actors.
Download or read book Positive Guidance in Traffic Control written by Gerson J. Alexander and published by . This book was released on 1975 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progress that has been made in developing the positive guidance concept is documented, and the meaning of positive guidance, the philosophy of driver performance upon which it is based the nature of the driving task at those locations where positive guidance is applicable, and a procedure for its application are discussed. This report describes what must be done to improve the information system at hazardous locations. Positive guidance which is an information system matched to the facility characteristics and driver attributes, is based on the premise that a driver can be given sufficient information where he needs it and in the form that he can best use to avoid hazards.
Download or read book Guidelines for Use of Fabrics in Construction and Maintenance of Low volume Roads written by John E. Steward and published by . This book was released on 1978 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porous woven and non-woven fabrics have been used in road construction in Region since 1974. The fabrics have been used: 1) as filters for subsurface drainage; 2) separation layers to prevent subgrade soil contamination of base layers; 3) subgrade restraining layers for weak subgrades; 4) earth reinforcement to build retaining walls; S) erosion control, and 6) water proofing membranes. A reference notebook titled "Fabrics In Construction" is due for release to Region 6 Forests in June 1977. This notebook contains a description of current practices and the state-of-the-art in the use of fabrics in road construction and maintenance. The notebook defines terminology and lists the key factors involved in each usage, and relates the fabric physical and chemical properties to the intended usage. The notebook also contains appropriate technical literature, manufacturers' literature and cost data on the known available fabrics. This report highlights the contents of the reference book and discusses the current knowledge for the use of fabrics in low-volume road construction and maintenance. Present and projected uses of the fabric and the most significant physical properties related to these uses are discussed. Probable future uses and the areas of greatest need for technical knowledge and experience are outlined. The process for moving a fabric or fabric use from the conception and trial use state into full use with standard specifications and design criteria is described.
Download or read book Catalog of Copyright Entries Third Series written by Library of Congress. Copyright Office and published by Copyright Office, Library of Congress. This book was released on 1975 with total page 1760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Men Without Work written by Nicholas Eberstadt and published by Templeton Foundation Press. This book was released on 2016-09-12 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: By one reading, things look pretty good for Americans today: the country is richer than ever before and the unemployment rate is down by half since the Great Recession—lower today, in fact, than for most of the postwar era. But a closer look shows that something is going seriously wrong. This is the collapse of work—most especially among America’s men. Nicholas Eberstadt, a political economist who holds the Henry Wendt Chair in Political Economy at the American Enterprise Institute, shows that while “unemployment” has gone down, America’s work rate is also lower today than a generation ago—and that the work rate for US men has been spiraling downward for half a century. Astonishingly, the work rate for American males aged twenty-five to fifty-four—or “men of prime working age”—was actually slightly lower in 2015 than it had been in 1940: before the War, and at the tail end of the Great Depression. Today, nearly one in six prime working age men has no paid work at all—and nearly one in eight is out of the labor force entirely, neither working nor even looking for work. This new normal of “men without work,” argues Eberstadt, is “America’s invisible crisis.” So who are these men? How did they get there? What are they doing with their time? And what are the implications of this exit from work for American society? Nicholas Eberstadt lays out the issue and Jared Bernstein from the left and Henry Olsen from the right offer their responses to this national crisis. For more information, please visit http://menwithoutwork.com.
Download or read book Environmental Management Systems written by Standards Association of Australia and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organizations of the Army written by United States. Quartermaster School, Camp Lee, Va and published by . This book was released on 1943 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book After Piketty written by Heather Boushey and published by Harvard University Press. This book was released on 2017-05-08 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Foreign Affairs Best Book of the Year “An intellectual excursion of a kind rarely offered by modern economics.” —Foreign Affairs Thomas Piketty’s Capital in the Twenty-First Century is the most widely discussed work of economics in recent years. But are its analyses of inequality and economic growth on target? Where should researchers go from there in exploring the ideas Piketty pushed to the forefront of global conversation? A cast of leading economists and other social scientists—including Emmanuel Saez, Branko Milanovic, Laura Tyson, and Michael Spence—tackle these questions in dialogue with Piketty. “A fantastic introduction to Piketty’s main argument in Capital, and to some of the main criticisms, including doubt that his key equation...showing that returns on capital grow faster than the economy—will hold true in the long run.” —Nature “Piketty’s work...laid bare just how ill-equipped our existing frameworks are for understanding, predicting, and changing inequality. This extraordinary collection shows that our most nimble social scientists are responding to the challenge.” —Justin Wolfers, University of Michigan
Download or read book Quantification of Road User Savings written by Jan de Weille and published by Johns Hopkins University Press. This book was released on 1966 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Books and Pamphlets Including Serials and Contributions to Periodicals written by Library of Congress. Copyright Office and published by . This book was released on 1968 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Road Deterioration in Developing Countries written by Clell G. Harral and published by World Bank Publications. This book was released on 1988-01-01 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economic Analysis for Highways written by Robley Winfrey and published by . This book was released on 1969 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wool written by W S Simpson and published by Elsevier. This book was released on 2002-05-09 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book leading experts within the industry come together to give the first comprehensive treatments of the science and technology of wool to be published in over 20 years. The wool industry has been through a period of substantial change, with a major overhaul of trading methods, exciting innovations in wool-scouring and wool processing methods, and the development of modern technology reflecting a strong emphasis on environmental concerns and energy conservation. Research into wool science has continued to grow, and the technologist now has a better understanding of both the chemical and the physical properties of wool. Modern instruments can determine the structural differences between several types of wool proteins and how they interact, and this knowledge is leading to a deeper understanding of what can be done to create better products and more effective processes. Wool: Science and technology is an essential reference resource for anyone involved in the worldwide wool industry whether as processor, manufacturer, or user for the garment and carpets trades. First new comprehensive treatment of wool for over 20 years Covers all aspects of processing, treatment and manufacture Contributions form distinguished experts worldwide
