We need similar visual metaphors, easy to grasp quickly and manipulate in rich combinations, for such concepts as piping output to another program, setting up filters, and launching programs upon the reception of particular events.
So I decided to put together a website that allowed users to generate graphs based on numerical data extracted from the Factbook. The next (rather obvious) realisation was that there's no reason I couldn't take in data from other sources. Why shouldn't the net have a central location that allows you to compare countries on any statistic you like?
Concepts of Pylons - Pylons Cookbook - PythonWeb Welcome to Pylons. You probably arrived here because you want to write a web-based application and are now looking for an easy way to do that. Perhaps you have even written CGI scripts or web applications in PHP.
Well, Pylons is a web framework which works a bit differently from what you may be used to. If you have used other frameworks such as Django, Turbogears or Ruby-on-Rails you will feel right at home though. This introduction aims to show you what Pylons offers and how developing with Pylons feels.
Google App Engine makes it easy to build an application that runs
reliably, even under heavy load and with large amounts of data. The
environment includes the following features:
- dynamic web serving, with full support for common web technologies
- persistent storage with queries, sorting and transactions
- automatic scaling and load balancing
- APIs for authenticating users and sending email using Google Accounts
- a fully featured local development environment that simulates Google App Engine on your computer
Google App Engine applications are implemented using the Python programming language. The runtime environment includes the full Python language and most of the Python standard library.
Although Python is currently the only language supported by Google
App Engine, we look forward to supporting more languages in the future.python-constraint is a Python module offering solvers for Constraint Solving Problems (CSPs) over finite domains in simple and pure Python. CSP is class of problems which may be represented in terms of variables (a, b, ...), domains (a in [1, 2, 3], ...), and constraints (a <>, ...).
In this article, we'll analyze the trends and technologies that power the Semantic Web. We'll identify patterns that are beginning to emerge, classify the different trends, and peak into what the future holds.
As previously announced, Prism is part of a series of Mozilla Labs experiments into bridging the divide in the user experience between web and desktop apps and exploring new usability models as the line between those kinds of apps continues to blur.
Freebase is an open database of the world’s information. It is built by the community and for the community—free for anyone to query, contribute to, built applications on top of, or integrate into their websites.
Here are two unexplored features in GMail that will can make your Gmail inbox spam proof.
APML stands for Attention Profiling Markup Language. It is a
file format for storing a user's Attention Profile. Learn more at www.apml.org
Anything you like. It is an open, free standard that you can use in
all sorts of magical ways. We are still discovering interesting uses
for HTML, RSS and OPML - innovation is the name of the game. Refer to
the 'Usage Scenarios' on the www.apml.org
site for some initial ideas. Also refer to the Questions below 'What is
Profiler' and 'What is ItemRank' to learn what Engagd can do with APML.
* An OPML file of top blogs on each subject. This is a bundle of feeds you can import into your reader.
* A filtered RSS feed of just the most popular items regarding each topic (using AideRSS).
Remember, whenever you subscribe to new RSS feeds - some of the magic
won't be visible until you mark all the initial items as read and new
ones come in again.
* A Custom Search Engine that you can bookmark and use to search inside the top news and reference sites regarding each topic.
Welcome to the Google Gadgets API! This developer
guide is intended for people who want to use the Google Gadgets API
to write gadgets. Gadgets
are so easy to create that they are a good starting point if you are
just learning about web programming.Contents
Online
Desktop
The goal of the GNOME Online Desktop is to adapt the desktop to become
the perfect window for online applications like GMail, Photobucket,
Facebook, EBay, Wikipedia, and countless others that user and developer
momentum is shifting towards.
Introducing the Online Desktop
RedHat, Google, Yahoo!, Facebook, Firefox, Salesforce.com, and
countless other organizations are changing the software we use by
shifting applications from Desktop Operating system to the web.Microsoft will move too slowly. The next
version of Windows may be well-integrated with Windows Live, but
there's a big difference between Windows Live and the Internet. Open
source doesn't have an agenda like this; our online desktop will be
integrated with anything and everything users want to use.As people and organizations realize they aren't really using
desktop operating systems anymore, except to launch their web browser
— open source will be there with a free-of-cost, free-as-in-freedom and super-simple alternative.This is the right strategy for the open source desktop community. It's time to remix GNU/Linux and GNOME into a completely new take on the desktop for an online era.
[edit]Slides from GUADEC
At GUADEC we held a talk with slides.
[edit]Philosophy
This is not a web-based desktop or "webtop"; we are trying to create
the ideal experience outside your browser. The fact is, you need
hardware drivers, and the browser itself can't be web-based. The
computing environment of the future won't be "turtles all the way
down." But neither does it need a bunch of complexity designed for a
pre-web world.Imagine an OS that keeps all its information online, so you can
use a live CD as easily as a full installation. When you start up a
newly-installed computer, or visit a friend's house, your whole
environment will be waiting for you, with no setup to redo. For the
techies, think Stateless Linux Desktop; your files and settings are
somewhere else.Because our desktop is open source, it will work with all
the best-in-category web sites and services that you use, no matter who
owns them. It can also support a diverse "long tail" of sites and
services for every interest and geographic location, as long as someone
interested in a particular service takes the time to add support for
it.
Personalization startup mSpoke is launching a new product to mashup and personalize RSS feeds today at DEMO [disclosure: Read/WriteTalk host Sean Ammirati works for mSpoke]. The product is called FeedHub
and it creates an "individualized RSS feed" that aims to filter
relevant posts from a set of feed sources. Like similar products we've
profiled before on Read/WriteWeb - e.g. FeedBlendr, FeedRinse and BlastFeed
- the result of the Feedhub process is a single RSS feed that you then
add to your RSS Reader (e.g. Google Reader, Bloglines) or Start Page.Personalization startup mSpoke is launching a new product to mashup and personalize RSS feeds today at DEMO [disclosure: Read/WriteTalk host Sean Ammirati works for mSpoke]. The product is called FeedHub and it creates an "individualized RSS feed" that aims to filter relevant posts from a set of feed sources. Like similar products we've profiled before on Read/WriteWeb - e.g. FeedBlendr, FeedRinse and BlastFeed - the result of the Feedhub process is a single RSS feed that you then add to your RSS Reader (e.g. Google Reader, Bloglines) or Start Page.
Aggregation/Discovery
One of the basic interfaces allows a component to represent a
collection if other components. For example, a file system component is
an aggregation of the components that are its directories and files.
The aggregation interface is also used for discovery, i.e., to find
other components on the network.Once discovered, another basic agreement is how to negotiate a
connection. The discovery component includes the ability for third
party Obje components to serve as bridges. This means that two devices
can interoperate without direct physical connectivity if they can find
a device with connectivity to both or a chain of devices that can
connect them.Data transfer
The Obje platform's basic view of interoperation is
(1) send data, (2) do
something
to data, and (3) sometimes, return a result. It
allows data transfer between components to occur
in ways that are not only independent of the underlying
wire protocol, but also independent of the format
of the data being transferred.
In the Obje platform,
components that are capable of sending data provide "custom
objects" that extend the behavior of potential
receivers in specific ways. While the Obje platform defines
the interface common to all custom objects, the
implementations of these objects can leverage mobile
code to provide dynamic, runtime extensibility
to new wire protocols and data formats.
User Interface/Control
Critical to successful interoperation
is that the "something" that is done
to the data depends on what component it is sent
to. The control meta-interface allows the user
to provide application semantics by directing the
interoperation.
Instead of having different
agreements for showing a picture on a display or
printing a page on a printer, the Obje platform needs
only the data transfer agreement. The user making
the connection provides the semantics by sending
the data, and adds additional information such
as size of print or number of copies. This is key
to allowing end-user assembly of solutions.
Metadata/Context
The final Obje component
interface returns a custom object that provides
contextual metadata about a component. The context
custom object returned by this interface provides
access to a set of attributes describing the component
that returns it: name, location, administrative
domain, and so on. The goal of this interface is
primarily to allow sense making by users, and secondarily
to allow programs to use metadata in their interactions.
At first glance one would recognize the attributes enumerated above
as being similar to technologies that have come before it (i.e. JINI,
uPnP etc). However the key distinguishing feature of the work is the
empahsis on humans being able to define the semantics:
Put another way, the programmatic interfaces define the syntax of interaction, while
leaving it to humans to impose semantics. It is the stabilization of the programmatic interfaces
that enable network effects; humans can, presumably, “understand” new components
in their environment, and when and whether to use them, much more easily
than machines can (and, it should be noted, without the need to be recompiled). This
semantic arbitration happens at the user level, rather than at the developer level as in
traditional component frameworks.
Human knowledge work mainly consists of the reception, interpretation
and structuring of information, the explicit articulation of thoughts
in suitable representations (like texts and pictures), and the sharing,
exchange and discussion of such resources with other people. The way
people proceed in this is heavily influenced by the tools they use: The
personal workspace – and the personal computer in particular
– support and reflect the individual ways of information
processing, thought articulation, and knowledge sharing across social
and organizational networks.
NEPOMUK intends to realize and deploy a comprehensive solution –
methods, data structures, and a set of tools – for extending the
personal computer into a collaborative environment, which improves the
state of art in online collaboration and personal data management and
augments the intellect of people by providing and organizing
information created by single or group efforts.
Welcome to High Scalability
Mon, 07/09/2007 - 06:36 — Todd Hoff
We started High Scalability to help you build successful scalable websites. This site tries to bring together all the lore, art, science, practice, and experience of building scalable websites into one place so you can learn how to build your system with confidence. Hopefully this site will move you further and faster along the learning curve of success.
Artquitectura shard de servidores web
