Download or read book Innovative Means of Collecting International Roughness Index Using Smartphone Technology written by Coady Cameron and published by . This book was released on 2014 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Roughness Index (IRI) is a widely used pavement performance measure collected with specially equipped vehicles; however, the cost of data collection may limit the ability of some road authorities to procure the data. Recent advances in smartphone technology have created interest in their potential to be low-cost mobile data collection platforms. This study compared IRI from an inertial profiler to IRI calculated from a smartphone' s accelerometer over a 1 km test section of road in New Brunswick, Canada. The study also included four scenario tests to evaluate the effects of varying the following experimental factors: vehicle type, device manufacturer, mounting arrangement and speed. The correlation between the smartphone' s results and those collected using the inertial profiler was found to be 88.9% for 100m increments along the section. The scenarios returned average IRI values ranging from 0.8% to 85% different than the average IRI of 2.60 m/km collected using the inertial profiler, though the smartphone configurations had higher coefficient of variations ranging from 2.05 to 9.11 compared to the inertial profiler's 1.12.
Download or read book Assessing the Potential of Measuring IRI Using Smartphone Technology in Support of Spring Weight written by Florence Josée Allaire Allaire and published by . This book was released on 2016 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spring weight restrictions (SWR) are imposed by transportation agencies to reduce heavy vehicle loads during spring thaw when road infrastructure is most susceptible to traffic damage. Smartphone devices can be used to monitor surface roughness by converting the accelerometer output into International Roughness Index (IRI) values. This research explored the potential of using these devices to monitor IRI as an indicator of thaw-weakening potential during spring thaw to contribute to an evidence-based framework to support real-time changes to SWR. Roughness was monitored on a 1 km section of two New Brunswick highways, Route 105 (collector) and Route 616 (local), over the SWR period employed by the New Brunswick Department of Transportation and Infrastructure (NBDTI) from March 15 to May 17, 2015. Data from both locations show a similar trend in the progression of roughness, with an IRI peak within the first 2 weeks of SWR, followed by a decrease in IRI that reached baseline values 2 weeks before the end of SWR. The maximum IRI for Route 105 was 2.54 m/km (baseline 1.35 m/km) and maximum IRI for Route 616 was 6.60 m/km (baseline 3.34 m/km). In both cases, maximum IRI was approximately double baseline values. Changes in roughness observed with these devices could be associated with trigger values to initiate a protocol to respond to drastic weather changes, including focusing strength testing efforts. The results suggest weekly monitoring would be sufficient during the spring thaw, with a doubling in frequency desirable when temperatures change drastically. A framework and monitoring guidelines were developed for the inclusion of mobile roughness in the SWR decision-making process.
Download or read book Unlocking the Lower Skies written by Aiga Stokenberga and published by World Bank Publications. This book was released on 2021-06-08 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the economic and broader societal rationale for using unmanned aerial vehicle (UAV) or “drone†? technologies as a complement to the current transport and logistics systems in several use cases in East Africa. The specific use cases examined include medical goods deliveries, food aid delivery, land mapping and risk assessment, agriculture, and transport and energy infrastructure inspection. Across these applications, the case for using UAVs is examined within the context of logistics objectives—total operating costs, speed, availability, and flexibility—as well as human, or societal, objectives. In the public health use case, as more low- and middle-income countries explore opportunities to improve efficiency and performance in their health supply chains and diagnostics networks, they face myriad choices about how best to use UAVs to improve product availability and public health outcomes and to reach the last mile. The high-level findings from this analysis are that, if examining commodity categories individually and looking exclusively at costs, delivery with UAVs in general is still more expensive for most categories. Although the cost is still higher, the most cost-effective use case examples include the transport of laboratory samples to selected destinations and delivery of life-saving items and blood. However, “layering†? several use cases can provide efficiencies and cost savings by allocating fixed costs across a greater number of flights and maximizing capacity and time utilization. From the perspective of public decision-makers, the cost effectiveness of UAVs cannot be analyzed without looking at the public health benefits, which may be substantial. Drone application in the other use cases examined in this book, such as mapping, risk assessment, and agriculture, is relatively more common than cargo drone operations, and the existing pilot initiatives in East Africa have delivered impressive results for speed and quality (precision). Food aid delivery by drones is still mostly at a planning, rather than implementation, stage. Drone applications are rapidly evolving, and several use cases could gain impact and scale over the coming years.
Download or read book Mechanical Vibration Road Surface Profiles Reporting of Measured Data written by British Standards Institute Staff and published by . This book was released on 1916-11-30 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Roads, Vibration, Vibration measurement, Profile, Profile measurement, Experimental data, Data representation, Statistical methods of analysis, Vibrometers, Mechanical measurement, Precision, Reports
Download or read book Gravel Roads written by Ken Skorseth and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
Download or read book Eleventh International Conference on the Bearing Capacity of Roads Railways and Airfields written by Inge Hoff and published by CRC Press. This book was released on 2021-11-10 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovations in Road, Railway and Airfield Bearing Capacity – Volume 1 comprises the first part of contributions to the 11th International Conference on Bearing Capacity of Roads, Railways and Airfields (2022). In anticipation of the event, it unveils state-of-the-art information and research on the latest policies, traffic loading measurements, in-situ measurements and condition surveys, functional testing, deflection measurement evaluation, structural performance prediction for pavements and tracks, new construction and rehabilitation design systems, frost affected areas, drainage and environmental effects, reinforcement, traditional and recycled materials, full scale testing and on case histories of road, railways and airfields. This edited work is intended for a global audience of road, railway and airfield engineers, researchers and consultants, as well as building and maintenance companies looking to further upgrade their practices in the field.
Download or read book Leak Detection written by Stuart Hamilton and published by IWA Publishing. This book was released on 2013-06-30 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ageing infrastructure and declining water resources are major concerns with a growing global population. Controlling water loss has therefore become a priority for water utilities around the world. In order to improve efficiencies, water utilities need to apply good practices in leak detection. Leak Detection: Technology and Implementation assists water utilities with the development and implementation of leak detection programs. Leak detection and repair is one of the components of controlling water loss. In addition, techniques are discussed within this book and relevant case studies are presented. This book provides useful and practical information on leakage issues.
Download or read book Guidelines for Conducting and Calibrating Road Roughness Measurements written by Michael W. Sayers and published by . This book was released on 1986 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Road roughness is gaining increasing importance as an indicator of road condition, both in terms of pavement performance, and as a major determinant of road user costs. This paper defines roughness measurement systems hierachically into four groups, ranging from profilometric methods (2 groups), through response type road roughness measuring systems (RTRRMS's), and, subjective evaluation. The International Roughness Index (IRI) is defined, and the programs for it's calculation are provided. The IRI is based on simulation of the roughness response of a car travelling at 80 km/h. The report explains how all roughness measurements can be related to this scale, also when travelling at lower speeds than 80 km/h. The IRI emerges as a scale that can be used both for calibration and for comparative purposes.
Download or read book Encyclopedia of Information Science and Technology written by Mehdi Khosrow-Pour and published by IGI Global Snippet. This book was released on 2009 with total page 4292 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This set of books represents a detailed compendium of authoritative, research-based entries that define the contemporary state of knowledge on technology"--Provided by publisher.
Download or read book A Handbook of Fourier Theorems written by D. C. Champeney and published by Cambridge University Press. This book was released on 1989-01-27 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is concerned with the well-established mathematical technique known as Fourier analysis (or alternatively as harmonic or spectral analysis). It is a handbook comprising a collection of the most important theorems in Fourier analysis, presented without proof in a form that is accurate but also accessible to a reader who is not a specialist mathematician. The technique of Fourier analysis has long been of fundamental importance in the physical sciences, engineering and applied mathematics, and is today of particular importance in communications theory and signal analysis. Existing books on the subject are either rigorous treatments, intended for mathematicians, or are intended for non-mathematicians, and avoid the finer points of the theory. This book bridges the gap between the two types. The text is self-contained in that it includes examples of the use of the various theorems, and any mathematical concepts not usually included in degree courses in physical sciences and engineering are explained. This handbook will be of value to postgraduates and research workers in the physical sciences and in engineering subjects, particularly communications and electronic engineering.
Download or read book Pavement and Asset Management written by Maurizio Crispino and published by CRC Press. This book was released on 2019-02-21 with total page 847 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement and Asset Management contains contributions from the World Conference on Pavement and Asset Management (WCPAM 2017, Baveno, Italy, 12-16 June 2017). For the first time, the European Pavement and Asset Management Conference (EPAM) and the International Conference on Managing Pavement Assets (ICMPA) were joining forces for a global event that aimed not only at academics and researchers, but also at practitioners, engineers and technicians dealing with everyday tasks and responsibilities related to transport infrastructures pavement and asset management. Pavement and Asset Management covers a wide range of topics, from emerging research to engineering practice, and is grouped under the following themes: - Data quality and monitoring - Economics, political and environmental management, strategies - Deterioration models - Key performance indicators - PMS-case studies - Design and materials - M&R treatments - LCA & LCCA - Risk and safety - Bridge and tunnel management - Smart infrastructure and IT Pavement and Asset Management will be valuable to academics and professionals interested and/or involved in issues related to transport infrastructures pavement and asset management.
Download or read book Adaptive Mobile Robotics written by Abul K. M. Azad and published by World Scientific. This book was released on 2012 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides state-of-the-art scientific and engineering research findings and developments in the area of mobile robotics and associated support technologies. The book contains peer reviewed articles presented at the CLAWAR 2012 conference. Robots are no longer confined to industrial and manufacturing environments. A great deal of interest is invested in the use of robots outside the factory environment. The CLAWAR conference series, established as a high profile international event, acts as a platform for dissemination of research and development findings and supports such a trend to address the current interest in mobile robotics to meet the needs of mankind in various sectors of the society. These include personal care, public health, services in the domestic, public and industrial environments. The editors of the book have extensive research experience and publications in the area of robotics in general and in mobile robotics specifically, and their experience is reflected in editing the contents of the book.
Download or read book Software Literacy written by Elaine Khoo and published by Springer. This book was released on 2017-11-24 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the notion of software literacy, a key part of digital literacy which all contemporary students and citizens need to understand. Software literacy involves a critical understanding of how the affordances and conceptual approaches of everything from operating systems, creative apps and media editors, to software-based platforms and infrastructures work to inform and shape the ways we think and act. As a cultural artefact, programing code plays a role in reproducing, reinforcing, and augmenting existing cultural practices, as well as generating completely new coded practices. A proposed three-tier framework for software literacy is the focus for a two-year empirical investigation into how tertiary students become more literate about the nature and implications of software they encounter as part of their tertiary studies. Two case studies of software learning and use in university-level engineering and screen & media studies courses are presented, investigating the mapping of students’ trajectory of the learning of desktop applications against this framework for software literacy. Though the book’s focus is primarily educational, its content also has implications for any field that makes use of software and information & communication technology systems and applications. As such, the book will be of interest to all readers whose work involves the challenges and opportunities presented by software-based teaching and learning; and to those interested in how software impacts the workplace and leisure activities that make up our day-to-day lives.
Download or read book Value Proposition Design written by Alexander Osterwalder and published by John Wiley & Sons. This book was released on 2015-01-28 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors of the international bestseller Business Model Generation explain how to create value propositions customers can’t resist Value Proposition Design helps you tackle the core challenge of every business — creating compelling products and services customers want to buy. This highly practical book, paired with its online companion, will teach you the processes and tools you need to create products that sell. Using the same stunning visual format as the authors’ global bestseller, Business Model Generation, this sequel explains how to use the “Value Proposition Canvas” to design, test, create, and manage products and services customers actually want. Value Proposition Design is for anyone who has been frustrated by new product meetings based on hunches and intuitions; it’s for anyone who has watched an expensive new product launch fail in the market. The book will help you understand the patterns of great value propositions, get closer to customers, and avoid wasting time with ideas that won’t work. You’ll learn the simple process of designing and testing value propositions, that perfectly match customers’ needs and desires. In addition the book gives you exclusive access to an online companion on Strategyzer.com. You will be able to assess your work, learn from peers, and download pdfs, checklists, and more. Value Proposition Design is an essential companion to the ”Business Model Canvas” from Business Model Generation, a tool embraced globally by startups and large corporations such as MasterCard, 3M, Coca Cola, GE, Fujitsu, LEGO, Colgate-Palmolive, and many more. Value Proposition Design gives you a proven methodology for success, with value propositions that sell, embedded in profitable business models."
Download or read book The Laws of Simplicity written by John Maeda and published by MIT Press. This book was released on 2006-07-07 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ten laws of simplicity for business, technology, and design that teach us how to need less but get more. Finally, we are learning that simplicity equals sanity. We're rebelling against technology that's too complicated, DVD players with too many menus, and software accompanied by 75-megabyte "read me" manuals. The iPod's clean gadgetry has made simplicity hip. But sometimes we find ourselves caught up in the simplicity paradox: we want something that's simple and easy to use, but also does all the complex things we might ever want it to do. In The Laws of Simplicity, John Maeda offers ten laws for balancing simplicity and complexity in business, technology, and design—guidelines for needing less and actually getting more. Maeda—a professor in MIT's Media Lab and a world-renowned graphic designer—explores the question of how we can redefine the notion of "improved" so that it doesn't always mean something more, something added on. Maeda's first law of simplicity is "Reduce." It's not necessarily beneficial to add technology features just because we can. And the features that we do have must be organized (Law 2) in a sensible hierarchy so users aren't distracted by features and functions they don't need. But simplicity is not less just for the sake of less. Skip ahead to Law 9: "Failure: Accept the fact that some things can never be made simple." Maeda's concise guide to simplicity in the digital age shows us how this idea can be a cornerstone of organizations and their products—how it can drive both business and technology. We can learn to simplify without sacrificing comfort and meaning, and we can achieve the balance described in Law 10. This law, which Maeda calls "The One," tells us: "Simplicity is about subtracting the obvious, and adding the meaningful."
Download or read book Transportation Planning Handbook written by ITE (Institute of Transportation Engineers) and published by John Wiley & Sons. This book was released on 2016-08-01 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multi-disciplinary approach to transportation planning fundamentals The Transportation Planning Handbook is a comprehensive, practice-oriented reference that presents the fundamental concepts of transportation planning alongside proven techniques. This new fourth edition is more strongly focused on serving the needs of all users, the role of safety in the planning process, and transportation planning in the context of societal concerns, including the development of more sustainable transportation solutions. The content structure has been redesigned with a new format that promotes a more functionally driven multimodal approach to planning, design, and implementation, including guidance toward the latest tools and technology. The material has been updated to reflect the latest changes to major transportation resources such as the HCM, MUTCD, HSM, and more, including the most current ADA accessibility regulations. Transportation planning has historically followed the rational planning model of defining objectives, identifying problems, generating and evaluating alternatives, and developing plans. Planners are increasingly expected to adopt a more multi-disciplinary approach, especially in light of the rising importance of sustainability and environmental concerns. This book presents the fundamentals of transportation planning in a multidisciplinary context, giving readers a practical reference for day-to-day answers. Serve the needs of all users Incorporate safety into the planning process Examine the latest transportation planning software packages Get up to date on the latest standards, recommendations, and codes Developed by The Institute of Transportation Engineers, this book is the culmination of over seventy years of transportation planning solutions, fully updated to reflect the needs of a changing society. For a comprehensive guide with practical answers, The Transportation Planning Handbook is an essential reference.
Download or read book Carbon Black written by Jean-Baptiste Donnet and published by Routledge. This book was released on 2018-05-04 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this reference provides comprehensive examinations of developments in the processing and applications of carbon black, including the use of new analytical tools such as scanning tunnelling microscopy, Fourier transform infrared spectroscopy and inverse gas chromatography.;Completely rewritten and updated by numerous experts in the field to reflect the enormous growth of the field since the publication of the previous edition, Carbon Black: discusses the mechanism of carbon black formation based on recent advances such as the discovery of fullerenes; elucidates micro- and macrostructure morphology and other physical characteristics; outlines the fractal geometry of carbon black as a new approach to characterization; reviews the effect of carbon black on the electrical and thermal conductivity of filled polymers; delineates the applications of carbon black in elastomers, plastics, and zerographic toners; and surveys possible health consequences of exposure to carbon black.;With over 1200 literature citations, tables, and figures, this resource is intended for physical, polymer, surface and colloid chemists; chemical and plastics engineers; spectroscopists; materials scientists; occupational safety and health physicians; and upper-level undergraduate and graduate students in these disciplines.
