Sustainable Bridge Structures

Autor: Khaled Mahmoud
Publisher: CRC Press
ISBN: 131565783X
File Size: 66,11 MB
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The ever-increasing traffic demands, coupled with deteriorating condition of bridge structures, present great challenges for maintaining a healthy transportation network. The challenges encompass a wide range of economic, environmental, and social constraints that go beyond the technical boundaries of bridge engineering. Those constraints compound the complexity of bridge projects and motivate innovations in bridge engineering technology towards the design and construction of sustainable bridges. The sustainability aims at minimizing the cost of bridge construction projects and the associated environmental impact on the society, while maintaining healthy economic development. On August 24–25, 2015, bridge engineers from all over the world gathered at the 8th New York City Bridge Conference to discuss and share experiences on the construction and maintenance of sustainable bridge structures. This volume contains a selection of papers that were presented at the conference. The peer-reviewed papers are valuable contributions to the state of the art in bridge engineering and of archival quality.

Asset Management Of Bridges

Autor: Khaled M Mahmoud
Publisher: CRC Press
ISBN: 1351338013
File Size: 72,31 MB
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First Published in 2017. Routledge is an imprint of Taylor & Francis, an Informa company.

The B Book

Autor: J. R. Abrial
Publisher: Cambridge University Press
ISBN: 9780521021753
File Size: 12,63 MB
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The B Method is a means for specifying, designing and coding software systems. The long-awaited B-Book is the standard reference for everything concerning this method. It contains the mathematical basis on which it is founded, the precise definitions of the notations used, and a large number of examples illustrating its use in practice. J.-R. Abrial, the inventor of B, has written the book in such a way that it can be used for self-study or for reference. It is in four parts, the first dealing with the mathematical foundations and the definition of the various mathematical structures that are needed to formalise software systems; special emphasis is placed on the notion of proof. The second part contains a presentation of the Generalised Substitution Language and of the Abstract Machine Notation; examples are given to show how large specifications can be constructed systematically. The next part introduces the two basic programming features of sequencing and loop. The last part covers the very important notion of refinement. It shows how to construct large software systems by means of layered architectures of modules. With the appearance of The B-Book, formal methods practitioners, computer scientists, and systems developers at last will have access to the definitive account of what will become one of the standard approaches to the construction of software systems.

Landmark American Bridges

Autor: Eric DeLony
Publisher: Bulfinch Press
ISBN: 9780821220368
File Size: 30,90 MB
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Photographs of ninety-five of the most impressive bridges in the United States are presented chronologically, from pre-Civil War spans to today's suspension bridges

T R Hamzah Yeang

Autor: Ken Yeang
Publisher: Images
ISBN:
File Size: 27,21 MB
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Ken Yeang is an inventive and prolific architect working mainly in southeast Asia. Hamzah Yeang's offices have pioneered a new building type. Based on bioclimatic architecture, Yeang's buildings are enrgy efficient, utilizing the natural forces that emit on a site in order to provide the occupants with a comfortable environment in which to live and work. Contains many of Yeang's award-winning solutions.

Urban Street Design Guide

Autor: National Association of City Transportation Officials
Publisher: Island Press
ISBN: 1610915348
File Size: 67,65 MB
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The NACTO Urban Street Design Guide shows how streets of every size can be reimagined and reoriented to prioritize safe driving and transit, biking, walking, and public activity. Unlike older, more conservative engineering manuals, this design guide emphasizes the core principle that urban streets are public places and have a larger role to play in communities than solely being conduits for traffic. The well-illustrated guide offers blueprints of street design from multiple perspectives, from the bird’s eye view to granular details. Case studies from around the country clearly show how to implement best practices, as well as provide guidance for customizing design applications to a city’s unique needs. Urban Street Design Guide outlines five goals and tenets of world-class street design: • Streets are public spaces. Streets play a much larger role in the public life of cities and communities than just thoroughfares for traffic. • Great streets are great for business. Well-designed streets generate higher revenues for businesses and higher values for homeowners. • Design for safety. Traffic engineers can and should design streets where people walking, parking, shopping, bicycling, working, and driving can cross paths safely. • Streets can be changed. Transportation engineers can work flexibly within the building envelope of a street. Many city streets were created in a different era and need to be reconfigured to meet new needs. • Act now! Implement projects quickly using temporary materials to help inform public decision making. Elaborating on these fundamental principles, the guide offers substantive direction for cities seeking to improve street design to create more inclusive, multi-modal urban environments. It is an exceptional resource for redesigning streets to serve the needs of 21st century cities, whose residents and visitors demand a variety of transportation options, safer streets, and vibrant community life.

40 Days Of Dating

Autor: Jessica Walsh
Publisher: Abrams
ISBN: 1613127154
File Size: 53,81 MB
Format: PDF
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When New York–based graphic designers and long-time friends Timothy Goodman and Jessica Walsh found themselves single at the same time, they decided to try an experiment. The old adage says that it takes 40 days to change a habit—could the same be said for love? So they agreed to date each other for 40 days, record their experiences in questionnaires, photographs, videos, texts, and artworks, and post the material on a website they would create for this purpose. What began as a small experiment between two friends became an Internet sensation, drawing 5 million unique (and obsessed) visitors from around the globe to their site and their story since it was launched in July 2013. 40 Days of Dating: An Experiment is a beautifully designed, expanded look at the experiment and the results, including a great deal of material that never made it onto the site, such as who they were as friends and individuals before the 40 days and who they have become since. Note: 40 Days of Dating has a special binding that allows it to open very flat by attaching the endpapers to the inside covers.

Crowdsourcing

Autor: Jeff Howe
Publisher: Crown Business
ISBN: 0307449327
File Size: 61,12 MB
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“The amount of knowledge and talent dispersed among the human race has always outstripped our capacity to harness it. Crowdsourcing ­corrects that—but in doing so, it also unleashes the forces of creative destruction.” —From Crowdsourcing First identified by journalist Jeff Howe in a June 2006 Wired article, “crowdsourcing” describes the process by which the power of the many can be leveraged to accomplish feats that were once the province of the specialized few. Howe reveals that the crowd is more than wise—it’s talented, creative, and stunningly productive. Crowdsourcing activates the transformative power of today’s technology, liberating the latent potential within us all. It’s a perfect meritocracy, where age, gender, race, education, and job history no longer matter; the quality of work is all that counts; and every field is open to people of every imaginable background. If you can perform the service, design the product, or solve the problem, you’ve got the job. But crowdsourcing has also triggered a dramatic shift in the way work is organized, talent is employed, research is conducted, and products are made and marketed. As the crowd comes to supplant traditional forms of labor, pain and disruption are inevitable. Jeff Howe delves into both the positive and negative consequences of this intriguing phenomenon. Through extensive reporting from the front lines of this revolution, he employs a brilliant array of stories to look at the economic, cultural, business, and political implications of crowdsourcing. How were a bunch of part-time dabblers in finance able to help an investment company consistently beat the market? Why does Procter & Gamble repeatedly call on enthusiastic amateurs to solve scientific and technical challenges? How can companies as diverse as iStockphoto and Threadless employ just a handful of people, yet generate millions of dollars in revenue every year? The answers lie within these pages. The blueprint for crowdsourcing originated from a handful of computer programmers who showed that a community of like-minded peers could create better products than a corporate behemoth like Microsoft. Jeff Howe tracks the amazing migration of this new model of production, showing the potential of the Internet to create human networks that can divvy up and make quick work of otherwise overwhelming tasks. One of the most intriguing ideas of Crowdsourcing is that the knowledge to solve intractable problems—a cure for cancer, for instance—may already exist within the warp and weave of this infinite and, as yet, largely untapped resource. But first, Howe proposes, we need to banish preconceived notions of how such problems are solved. The very concept of crowdsourcing stands at odds with centuries of practice. Yet, for the digital natives soon to enter the workforce, the technologies and principles behind crowdsourcing are perfectly intuitive. This generation collaborates, shares, remixes, and creates with a fluency and ease the rest of us can hardly understand. Crowdsourcing, just now starting to emerge, will in a short time simply be the way things are done. From the Hardcover edition.

Solutions To Coastal Disasters 2011

Autor: Louise Wallendorf
Publisher: ASCE Publications
ISBN: 0784411859
File Size: 73,95 MB
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Proceedings of the 2011 Solutions to Coastal Disasters Conference, held in Anchorage, Alaska, June 25¿29, 2011. Sponsored by the Coasts, Oceans, Ports, and Rivers Institute of ASCE; National Oceanic and Atmospheric Administration; and Federal Emergency Management Agency.This collection contains 79 papers examining the physical and environmental linkages on the coast, the vulnerability of existing coastal communities, sustainability and adaptation, and ways to incorporate social solutions into the discussion of coastal disasters. These papers address on the challenges and lessons that are being learned along the coastlines of the globe. They focus on both the lessons learned and the opportunities to best apply these lessons to avoid or minimize preventable losses.Topics include: sea-level rise and some emerging options for adaptation; hurricanes, typhoons, and storm surge damages; improved forecasting tools and opportunities to reduce damages in the future; coastal inundation and flooding; shoreline erosion and ways to study, understand, and adapt to shoreline change in the face of rising sea level; shoreline management and coastal hazard mitigation; vulnerability and adaptability of coastal structures and marine facilities; social science of natural disasters; and modeling efforts, field investigations, preparedness and lessons learned from recent tsunami events.Coastal managers, planners, scientists, engineers, geologists, economists and oceanographers will find useful information in this multidisciplinary collection.