IBM has published the following new technical articles, tutorials, and downloads on its DeveloperWorks website. They cover a range of interesting (though not necessarily embedded) technical topics, primarily related to Linux and open source system development. Some require free registration.

• Linux Powers Nokia 770 — The Linux-based Nokia 770 Internet tablet is an intriguing gadget for Linux enthusiasts and professional embedded developers. Though it lacks personal information manager (PIM) apps one would expect from a palmtop-sized device, it is instead pitched as an “Internet tablet,” providing applications such as Web browsing and an email client.
• The Art of Loading and Storing on PowerPC — The previous article in this series introduced assembly language programming using the 64-bit PowerPC instruction set on POWER5 and other processors that use these instructions. This article drills down the specifics of using the 64-bit PowerPC on Linux and UNIX-like operating systems, focusing on data access methods and position-independent code.
• Tuning Your CPC945 Memory Controller — Explore the register-level details of tuning the CPC945's double data rate 2 (DDR2) memory controller for specific hardware implementations. Author Neil Leeder introduces nifty self-calibrating hardware features of the CPC945 to help you learn how to operate reliably with different memory configurations.
• UNIX tools for exploring object files — Computers are difficult to program and many tools have been created to assist you in making the task easier. The programs that run on a UNIX system follow a careful design known as the object file format. Learn more about the object file format and the tools that you can use for exploring object files found on your system.
• Speaking UNIX, Part 5: Data, data everywhere — One of the most common problems of managing large numbers of computers is how to keep so many systems up-to-date and consistent. Take a look at several techniques that illustrate how to move files among systems and how to keep such far-flung data in sync. In Part 5 of this series, let's look at a handful of techniques that can help keep explosions of files under control.
• MochiKit feels like Python but delivers high-level JavaScript — MochiKit takes its main inspiration from Python, and from the many conveniences the Python standard library offers; but on the side it also smooths over the inconsistencies among browser versions. MochiKit.DOM is a particularly handy component that lets you work with DOM objects in much friendlier ways than raw”JavaScript provides. A lot of MochiKit.DOM is customized for XHTML work, which possibly makes its use of XHTML wrapped microformats particularly convenient when combining MochiKit and Ajax.
• Discover the Ajax Toolkit Framework for Eclipse — The Ajax Toolkit Framework (ATF) is a core piece of the new Open Ajax initiative, which aims to increase accessibility to the powerful Web programming technique through the Eclipse Foundation. This article includes a HelloWorld example in which you install and configure the ATF, then use Eclipse and Dojo to create a basic Web application.
• Build an Ajax app using Google Web Toolkit, Apache Derby, and Eclipse — Google Web Toolkit makes building a rich Ajax browser client interface even easier than building traditional Java GUI interfaces. Learn the basics of GWT in this first article in a series, including how GWT lets you create an Asynchronous JavaScript + XML (Ajax) application and still write your code in the Java language. Discover how to create and run a small sample GWT application — a hot new Web 2.0 business called Slicr, which sells pizza online.
• Greatly Improve Linux LAMP Security — The root of the PHP and Lamp security problem lies in the way most Apache servers are configured. In this article, you will improve the Linux security of a LAMP by using the capabilities of Apache's Proxy's directive mod_proxy module to isolate potential Linux security risks while maintaining the flexibility that tools like PHP provide.
• Creating a declarative security model for RCP applications — Thick client-based business applications require rigid security regulations where different classes of users receive a predetermined set of access rights. This article explains how to build a flexible security model for Rich-Client Platform (RCP) applications by leveraging features provided by the Eclipse platform.

 
This article was originally published on LinuxDevices.com and has been donated to the open source community by QuinStreet Inc. Please visit LinuxToday.com for up-to-date news and articles about Linux and open source.