Advanced rails

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  • Ready to go to the next level with Rails? From examining the parts of Ruby that make this framework possible to deploying large Rails applications, Advanced Rails offers you an in-depth look at techniques for dealing with databases, security, performance, web services and much more. Chapters in this book help you understand not only the tricks and techniques used within the Rails framework itself, but also how to make use of ideas borrowed from other programming paradigms.

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  • Ruby on Rails continues to build up a tremendous head of steam. Fueled by significant benefits and an impressive portfolio of real-world applications already in production, Rails is destined to continue making significant inroads in coming years. Each new Rails application showing up on the web adds yet more to the collective wisdom of the Rails development community. Yesterday's best practices yield to today's latest and greatest techniques, as the state of the art is continually refined in kitchens all across the Internet. Indeed, these are times of great progress. ...

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  • Ruby on Rails has shaken up the web development industry in a huge way—espe­ cially when you consider that version 1.0 of Rails was only released in December 2005. The huge waves of enthusiasm for the new framework, originally in weblogs and later in the more traditional media, are probably the reason why this book is in your hands. This book will lead you through the components that make up the Rails framework by building a clone of the popular story-sharing web site digg.com. This will give you a chance to get your feet wet building a simple, yet comprehensive web...

    pdf173p namde04 04-05-2013 18 2   Download

  • In recent years, earthquake damage caused by the massive earthquake that happened in many countries. For example, more than 250,000 people have been killed by the earthquake Haiti January 2010. In addition, more than 15,000 people have been killed by the Japanese Tohoku The earthquake and Japan Tohoku coast was devastated by a large tidal wave March 2011.

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  • The Book of Ruby is an in-depth introduction to Ruby, one of the world's most popular programming languages and the backbone of the acclaimed Ruby on Rails web application framework. With an emphasis on writing clear and maintainable code, author Huw Collingbourne takes readers from the most basic constructs, like types, conditions, and loops, to more advanced techniques, like multithreading and metaprogramming.

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  • But we need a sustained effort, which is why the President set an ambitious goal that by 2015 we would have 1 million electric vehicles on the road, becoming the world’s leader in advance vehicle technologies. To help reach this goal, the President is proposing bold steps to improve the efficiency of all modes of transportation, from air to highways to rail to water, and to develop alternative fuels. He is continuing to push forward on fuel economy standards for cars and trucks. He has proposed to speed the adoption of electric vehicles with new more...

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  • Switzerland's policy for improving air quality "must be pursued with determination," the agency added. "In particular, this means using more advanced technologies and introducing stricter norms for nitrogen oxide (NOx) and particulates." The agency said one reason for the smaller than anticipated decrease in polluting emissions is the projected increase in truck traffic despite the Swiss government's efforts to encourage trucks crossing through Switzerland to be put on rail cars through the use of road tolls and quotas on truck traffic.

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  • The world is on the threshold of a new era of innovation and change with the rise of the Industrial Internet. It is taking place through the convergence of the global industrial system with the power of advanced computing, analytics, low-cost sensing and new levels of connectivity permitted by the Internet. The deeper meshing of the digital world with the world of machines holds the potential to bring about profound transformation to global industry, and in turn to many aspects of daily life, including the way many of us do our jobs.

    pdf37p bin_pham 05-02-2013 19 2   Download

  • The new state-of-the-art class 423 metro train set is the latest result of advanced European rail research, producing 56% less CO2 than the 35-year-old vehicle it replaces. Procured by Deutsche Bahn, the new train is a lightweight compared to its predecessor, weighing only 105 tonnes instead of 140. Reduced dead weight saves some 25% of specifi c energy consumption, while regenerative braking accounts for further savings of up to 31%.

    pdf234p yeutinh98 26-09-2012 27 1   Download

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