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Medium 9781847770653

Monsters of Philosophy

Source: Emporium
Slice PDF February 05, 2015

Medium 9781617835179


Source: SWAT
Slice PDF May 13, 2014

Medium 9780596009441

Reader Protocols

Source: RFID Essentials
Slice PDF May 27, 2014

Chapter 6


Reader Protocols


E HAVE SEEN HOW A READER COMMUNICATES WITH TAGS , but a reader must also communicate with the network and the applications and middleware hosted on the network. While most of the early standardization work has centered on tags and tag protocols, the next year should see important progress in standardization of reader protocols. This is in keeping with a transition from the Compliance era to the era of the RFID-Enabled Enterprise, where greater demand for standards-based interfaces will drive procurement decisions and so drive reader development. An understanding of these protocols will directly help in configuring middleware and applications as well as in debugging communications between readers and applications or middleware on the network.

In this chapter we will discuss the general structure all modern reader protocols share.

We’ll also take a look at some specific proprietary protocols that have been developed by vendors in recent years, a new reader protocol standard developed by EPCglobal, and a competing standard introduced by the Internet Engineering Task Force (IETF). We will then discuss what to expect from future reader protocol development.

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Medium 9781591200208

6. Ginseng and Astragalus

Slice ePub May 22, 2014



Ginseng is one of the most popular herbs in the world, while astragalus is relatively unknown in Western countries. Both of these herbs have important benefits for the athlete, ranging from increased endurance and strength to enhanced immune function. Like Rhaponticum carthamoides, ginseng and astragalus work through nonhormonal pathways, so they can be used for extended periods. But it takes a while for you to see noticeable effects.

Ginseng has been the subject of a wide variety of research experiments in Western countries, both in animals and in humans. The results of these studies are all over the board for reasons that are discussed in this chapter. Nearly all of the experiments with astragalus have been done in China, where the herb is even more popular than ginseng. The bottom line from these studies is that ginseng and astragalus will help you perform better in your sport—provided that you take enough of a standardized extract for a long enough time.

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Medium 9780596522001

2. Scaffolding, REST, and Routes

Slice ePub May 27, 2014

For centuries, scaffolding has helped builders provide access and support to buildings through the early stages of the construction process. Programmers, too, use temporary scaffolding code to lend structure and support until more permanent code is available. Rails automates scaffolding to make early coding more productive than ever before.

In Chapter1, you saw how Rails took the most basic Rails request to call an action on a controller with a hash map of parameters. You also built some primitive views. In this chapter, well start building a more powerful application called Photo Share, one that you can use to manage your personal photographs. Well use scaffolding to build the basic template, which includes a database-backed model, a controller, and a view. Along the way, youll learn the basics of a few critical Rails features, including:

Migrations. This database feature helps database developers create a database schema in steps, managing differences in the schema across all of your environments. Migrations will use Ruby code instead of database-specific SQL code.

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