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WYSIWYG Development of Data Driven Web ApplicationsAn emerging trend in Social Networking sites and Web portals is the opening up of their APIs to external application develop- ers. For example, the Facebook Platform, Google Gadgets and Yahoo! Widgets allow developers to design their own applications, which can then can be integrated with the platform and shared with other users. However, current APIs are targeted towards develop- ers with programming expertise and database knowledge; they are not accessible to a large class of users who do not have a programming/database background, but would nevertheless like to create new applications. To address this need, we have developed the AppForge system, which provides a WYSIWYG application development platform. Users can graphically specify the components of webpages inside a Web browser, and the corresponding database schema and application logic will be automatically generated on the fly by the system.
The WYSIWYG interface gives instantaneous feedback on what users have created and allows them to run, test and continuously refine their applications. AppForge has been used to create prototype versions of a variety of applications such as an event planning system, a recruiting system, an item trading system and an online course management system. We have also conducted a small and preliminary user study to identify and fix some of the usability aspects of AppForge.
As the world moves towards Web 2.0, there is an increasing need to leverage webpages as computing platforms that can enable users to build their own applications. For example, in Facebook and Yahoo! Groups, different groups of usersPolyServe Matrix Server with Apacheserver farm regardless of whether that Apache server node is up and running.
at the moment. If an Apache Web server node is down, an administrator is
With the advent of the Internet, the need to deliver highly available, scalable e-business systems has mushroomed. The Web is traforming how companies traact business, communicate with their custome and business partne, and ultimately how they compete. Corporatio are in the throes of traforming themselves into e- businesses. As part of this traformation, Information Technology (IT) departments are being asked to deliver and maintain systems that traact with custome around the clock, that share data across the public Internet, and that generate large amounts of revenue for the corporation. These systems must be able to scale to meet the demands of a networked world. The penalty for downtime or slow respoe times in this environment is immee. Every minute counts and can result in lost revenue to the corporation and maybe even more importantly tarnish the corporation in the eyes of the public and its business partne. Web server farms have become part of the standard
DownloadKIP - QUICK GUIDE TO CADThe term CAD is an abbreviation of Computer Aided Design and refers to the use of a wide range of computer-based tools used by engineers, architects and other design specialists. Computer Aided Design involves both software applications, ranging from 2-dimensional vector-based drafting tools through to highly sophisticated 3D modelling systems, and specialist hardware tools including ‘wide-format’ print systems.
For some years now CAD systems have been replacing the traditional manual drawing and design process, allowing designers to work completely in the electronic realm. Highly sophisticated CAD software enables designers to make changes and see the effects in real time, allowing problems to be identified and rectified in the virtual realm before the design is committed to production, thus reducing significantly the time and cost of development. ‘Wide format’ printing
Although with the advent of CAD systems the design cycle is now largely electronic rather than paper based, the ability to effectively print electronic drawings onto ‘wide format’ paper (i.e. paper up to 36”or 841 mm wide) is still a vital factor. Paper prints are still the norm for checking, approval and sign-off of designs and plans; also the architectural, construction, manufacturing and engineering industries are still absolutely reliant on paper drawings at the point of use – and will remain so for the foreseeable future.
With the shift from paper to electronic design in recent years, the nature of ‘wide format’ reprographics has changed radically. Analogue wide format copiers, traditionally used to reproduce manually created drawings, have been replaced with a range ofOilhead Valve Adjustment for Dummies Manual PDFBMW Oilhead Valve Adjustment for Dummies | Where Our Ham fisted Hero Pursues Advanced Valve Adjustment Procedures in 99 Easy to Follow Steps (Some Of Which Are Repeated Over And Over And Over Again) - Or - Smidges, Snerks, Torques, Tweaks, and a Peculiar Quantum Tunneling Problem at the Mechanical Level… Oilhead Valve Adjustments for Dummies – 2003-09-23 Who Should Read This Nobody. Really. We’re not kidding. We can tell and show you the steps, but, if you really want to learn this, you need to get the ‘feel’.
The best way to cop a feel is to serve an apprenticeship. However, if you insist on reading this you might find some of it entertaining, you’ll get a good idea of the procedure, discover that there is no real mystery to this type of wrenching, and you might pick up a nifty tip or two. What’s This All About Ultimately, valve adjustment is about the ride. But we’re getting ahead of ourselves. Contrary to what you might think, valve adjustment is a straightforward procedure. It’s easy to do. You’re not going to end up with oil all over. You don’t need to buy thirty or forty specialty gaskets and an Iraq pack of oil. Nor will you have an explosion of tiny little parts to track, reassemble or lose.
Download Oilhead Valve Adjustment for Dummies Manual PDFnik Color Efex Pro 2.0 User Guidenik Color Efex Pro 2.0 photographic filters offer features and functionality that are designed to make digital photographic enhancements not only easier, but better.
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Download pdf nik Color Efex Pro 2.0 User GuideExperiences Teaching Data Structures With JavaAmong Computer Science educators, hardly any topic inspires more heated debate than the choice of programming language in the introductory sequence. In the late 80s, the uniformly accepted choice was Pascal, but since then, a host of alternatives have come into use. C++ seems to have emerged as the winner, while Pascal, C, Ada, Scheme, and Modula-3 split most of the remaining market.
There appear to be two overriding reasons for C++’s emergence. First, principles such as encapsulation and information hiding, that are important to teach in the CS I/II curriculum, are easily demonstrated in C++. Much of the ugliness associated with C is easily avoided in C++ by the use of a tiny set of classes: About all that is needed is a String and Vector class. Second, C++ has become an industry standard (even though C++ is itself not yet standardized). Many universities are finding that they must teach C++ at some point, and given limitations on the number of courses that can be offered, they are finding it most convenient to teach it early. C++, however, has its share of problems; some of these problems will be discussed later. Java is the new alternative to C++. It can be presented as a simpler C++ that fixes many of C++’s bad features and provides a primitive, but useful, GUI toolkit. One argument for teaching Java early is that it is better to use an alreadydefined language rather than attempt to subset a complex language. While C++ is arguably theThe A/UX Web Server Deployment Guide A SnakeOil Labs White Paper If you’re one of the four, five, maybe even six people
out there on the Internet who want to set up an A/UX web server, then this guide is for you. To make things simpler, this document follows a few standard conventions. Text in Courier is reserved for terminal sessions. This provides a sample walkthrough of commands to type and their usual responses. For example: A larger courier font is used to denote relevant commands mid-sentence, such as newconfig, in order to separate the command from the rest of the text. File and path names, such as /etc/inittab, are in bold. Individual references to filenames without paths like inittab aren’t.
Note:
The famous Mac Bomb symbol is used to denote a tip or note. Small notes like these provide hints and tips as well as insight drawn from bitter experience.
Make sure you read them!
One small point; there are many instances where command lines are preceded by either a # or $ symbol. The # refers to the root user and the $ symbol refers to a regular user. In either case, don’t type the symbol. To make matters even more confusing, most of the configuration files used in this guide use leading # symbols to define comments. It’s confusing but it’s the UNIX convention, not ours. Don’t worry, you’ll get used to it.
Credit Where Credit’s Due
This guide simply wouldn’t exist without the prior work of many others. In particular, I’d like to thank Scott from aux-penelope for letting me use his screenshotsLockr: Social Access Control for Web 2.0Sharing personal content online is surprisingly hard despite the recent emergence of a huge number of content sharing systems and sites. These systems suffer from several drawbacks: they each have a different way of providing access control which cannot be used with other systems; moving to a new system is a lengthy process and requires registration and invitation of all one’s friends to the new system; and the rules for access control are complicated and become more so as our networks of online friends grow.
In this paper, we present Lockr–an access control scheme based on social relationships that makes sharing personal content easy. Lockr separates social networking information from the content sharing mechanisms, thereby eliminating the need for users to maintain many site-specific copies of their social networks. We describe Lockr’s design, security properties, and limitations. We also present how we integrated Lockr with two popular systems for sharing content online – BitTorrent and Flickr.
Today, sharing personal content is surprisingly difficult. Current systems suffer from a number of drawbacks. They are cumbersome to use, they impose artificial limits on the size of shared content (e.g., pictures and video), and they make it difficult to restrict content only to a specific set of users. For those Web sites that do provide access control, they typically require all the participants to be registered with the site in question. This imposes the burden that users must register with many sites, and maintain separate and potentially inconsistent copies of their social networks for eachDeveloping Applications with WebLogic SIP ServerThe SIP Servlet API is a part of JAIN APIs and being standardized as JSR116 of JCP (Java Community Process). The SIP Servlet API version 1.0 was published in February, 2003.
Note: In this document, the term “SIP Servlet” is used to represent the API, and “SIP servlet” is used to represent an application created with the API. J2EE provides Java Servlet that is a main technology of building Web applications. Although Java Servlet is used only to develop HTTP protocol-based applications on a Web application server, it basically has functions as a generic API for server applications. SIP Servlet is defined as the generic servlet API with SIP-specific functions added.
SIP Servlets are very similar to HTTP Servlets, and HTTP servlet developers will quickly adapt to the programming model. The service level defined by both HTTP and SIP Servlets is very similar, and you can easily design applications that support both HTTP and SIP. Listing 1 shows an example of a simple SIP servlet.
Listing 1-1 List 1: SimpleSIPServlet.java
package com.bea.example.simple;
import java.io.IOException;
import javax.servlet.*;
import javax.servlet.sip.*;
public class SimpleSIPServlet extends SipServlet {
protected void doMessage(SipServletRequest req)
throws ServletException, IOException
{
SipServletResponse res = req.createResponse(200);
res.send();
}
}
The above example shows a simple SIP servlet that sends back a 200 OK response to the SIP MESSAGE request. As you can see from the list, SIP Servlet and HTTP Servlet have many things in common:
1. Servlets must inherit the base class provided by the API. HTTP servlets must inherit HttpServlet, and SIP servlets must inherit SipServlet.
2. Methods doXxx must be overridden and implemented. HTTP servletsPerformance Brief: Autodesk AutoCAD PDF SheetRiverbed Steelhead® Appliances Accelerate Autodesk AutoCAD® Despite the efforts of AutoCAD to dramatically reduce the average file size of design documents, file collaboration over a Wide Area Network (WAN) can take a dramatic toll on productivity. Files are often many hundreds of megabytes, resulting in inefficiency even in basic operations such as file opens and file saves. Architecture, engineering, and manufacturing firms estimate that design engineers can spend one-quarter to one full hour a day on remote file operations, dramatically reducing the available working time per person.
Downloadthis 2 pages of PDF for Performance Brief: Autodesk AutoCAD
