New York hackathon brings together next generation of programmers

Friday, 5 July 2013

At New York City's Museum of the Moving Image's theater, a dark head of hair peeks over the podium and a 10-year-old-boy explains how he and his partner – a young girl barely clearing the dais – created a website about graffiti in the city.
The two kids gathered with 48 others on Saturday and Sunday morning – sacrificing precious video-game playing, friend-hanging and homework-doing time – to parse open civic data to create websites, applications and mobile tools at Young Rewired State's first international youth hackathon.
Young Rewired State started in 2009 to build a network of young programmers. It expanded to multiple events in the UK and has attracted children as young as six. Young Rewired State founder Emma Mulqueeny wanted to expand the events international presence to introduce more youngsters to open government data.
"New York and the US are the heart of entrepreneurism, really – I think it's moving from Silicon Valley to New York," Mulqueeny told the Guardian. "I could see the most exciting things happening here and the greatest opportunity for the young people we are trying to be bring out of their bedrooms and be a part of this."
The program emphasizes peer-to-peer learning by connecting participants with the more than 1,000 young people who have participated in the UK program. The idea is to bring the so-called "bedroom programmers" out from what can be the lone experience of a programmer to work together and foster their talents. Participants also receive help from professional programmers who volunteer as mentors at the event.

what is css?

What You Should Already Know

Before you continue you should have a basic understanding of the following:
If you want to study these subjects first, find the tutorials on our Home page.

What is CSS?

  • CSS stands for Cascading Style Sheets
  • Styles define how to display HTML elements
  • Styles were added to HTML 4.0 to solve a problem
  • External Style Sheets can save a lot of work
  • External Style Sheets are stored in CSS files

    CSS Demo

    An HTML document can be displayed with different styles: See how it works

    Styles Solved a Big Problem

    HTML was never intended to contain tags for formatting a document.
    HTML was intended to define the content of a document, like:
    <h1>This is a heading</h1>
    <p>This is a paragraph.</p>
    When tags like <font>, and color attributes were added to the HTML 3.2 specification, it started a nightmare for web developers. Development of large web sites, where fonts and color information were added to every single page, became a long and expensive process.
    To solve this problem, the World Wide Web Consortium (W3C) created CSS.
    In HTML 4.0, all formatting could be removed from the HTML document, and stored in a separate CSS file.
    All browsers support CSS today.

    CSS Saves a Lot of Work!

    CSS defines HOW HTML elements are to be displayed.
    Styles are normally saved in external .css files. External style sheets enable you to change the appearance and layout of all the pages in a Web site, just by editing one single file!


  • Look at Example 1
  • Look at Example 2

CSS Syntax

A CSS rule has two main parts: a selector, and one or more declarations:

The selector is normally the HTML element you want to style.
Each declaration consists of a property and a value.
The property is the style attribute you want to change. Each property has a value.

CSS Example

A CSS declaration always ends with a semicolon, and declaration groups are surrounded by curly brackets:
p {color:red;text-align:center;}
To make the CSS more readable, you can put one declaration on each line, like this:



Try it yourself »

CSS Comments

Comments are used to explain your code, and may help you when you edit the source code at a later date. Comments are ignored by browsers.
A CSS comment begins with "/*", and ends with "*/", like this:
/*This is a comment*/
/*This is another comment*/

Do-It-Yourself Website Builder For Your Small Business

Many people may not be aware of the fact that a Do-It-Yourself (DIY) Website builder can be the perfect solution for building a website independently. This can be especially very useful for small business owners, individual entrepreneurs, and startup organizations etc who want to build their websites in an affordable manner. A robust DIY Website Builder tool is generally available online and which is easy-to-use so that even a non-technical person can easily create an effective website, without seeking any help from a website designer. It will take a few minutes to create a full-fledged website and you don’t have to pay for expensive web designing fees that most of the web designers charge today.
Besides saving your time and cost, a website builder tool can offer you tremendous designing possibilities. Such a tool usually has thousands of unique designs and templates that can help an individual or a business owner to help develop a personalized website with highly distinctive features. You don’t need any designing skills, but you can choose a unique template, with permutation and combination of scores of elements, essential for designing a website. Only you need to choose a domain name and a web hosting provider and your website will be up in minutes. This could be an ideal and cost-effective option, if you want to start an online business from home. You can build your website and start selling your products to a wider customer base across the world.
Most of the web hosting companies offer DIY Website Builder tools to their clients who purchase web hosting solutions from them. In this manner, these companies intend to give the complete solution to a client besides providing them with web hosting services. At the same time, a client finds it as a good option to build a website and host it with the company at affordable prices. If you choose a combo offer of a DIY builder and web hosting with such a company, it will prove extremely affordable for you. By paying a nominal cost for their web design tool, you get a website-building solution for yourself.
Today, a website has been considered as an essential tool for marketing and selling a wide range of products and services to a large number of customers available online. Building e-commerce websites has become a hot business trend, with the consumer’s growing willingness of buying products and services online and also a business owner can enjoy the highest margins by doing business online, instead of starting a physical store. But what may bother many of them is the startup cost of building a creative and feature-rich website. This cost can be suitably reduced by taking help of a DIY Website Builder tool which is often very simple to use and affordable too.
Such a website building tool provides you with the opportunity to build an online shop for buying and selling products and services online. A website builder enables you to build a website to enter into the lucrative market of online business in a cost-effective manner that you will always appreciate such a tool for their user-friendly features.

Cloud Storage: Finding the Right Provider

If you are techno-savvy, you recognize the importance of having a good backup for your data.
If you are really hardcore, you could have a separate hard drive, specifically for your data, that you can easily swap into a new machine of your main drive goes bad.
What happens if you have a fire, or a flood, or a lightning strike from a summer thunder storm. In fact, lightning strikes result in thousands of dollars in claims every year, for damaged computers and electronics.
No matter how elaborate your backup plan, if all of your data is stored in your home, it is vulnerable.
Storing your data in a secure, offsite location is the best way to protect it from loss or damage. Large corporations and some small businesses use providers like LSI for their offsite storage and networking needs. Some services can be cost prohibitive to the individual user.
This is where cloud computing comes in. Cloud computing lets you store your data on a secure site for a fraction of the cost.
Choosing Your Cloud Provider
These days your choices for cloud providers are wide and varied. If you use the latest Microsoft operating system, it has cloud storage built in in the form of the Microsoft. If you use Amazon Prime, you can store your data on the Amazon Cloud. Google, in addition to Google+ and other products, also the Google Drive, and there is also DropBox.  And these are only a few of the options available.
Most cloud providers offer a certain amount of storage space free. Google Drive and Amazon both offer 5GB of free storage, Dropbox offers 2GB, and Microsoft offers a whopping 25GB.
Beyond that, you can pay a fee for additional space, depending on how much you think you will need. If you want to backup a lot of music and video files, you could need several hundred GB of space, and that’s where the costs add up.
Dropbox charges $9.99 per month for up to 100GB of storage, and as much as $49.99 per month for 500GB.
Google drive offers 100GB for $4.99 per month, and you can get 1TB (terabyte) for $49.99 per month.
Microsoft, which offers the most free storage up front, offers a maximum of 100GB of additional storage for $50 per year.
Amazon offers a maximum of 100GB of space for $500 per year (or approximately $42 per month). However, Amazon also has its Cloud Player Premium which stores 250,000 imported songs for $24.99 per year. Music purchased at amazon is automatically stored in the cloud player and does not count toward the imported songs limit, and music storage is separate from your drive storage.
If most of your data is music, the Amazon Cloud Player could be your best option, with the free 5GB cloud storage for your documents. If your documents use more than 5GB but less than 25GB, consider splitting your storage between two providers – Amazon for the music and Microsoft’s free 25GB storage for your documents.
Most cloud providers also offer an app that allows you to access your cloud storage from your computer or mobile device and all of the products featured are fairly similar in that respect.
Other Features:
Do you want straight document storage or will you need to synch changes and upgrades among multiple users? If you want straight storage, a product like Drop Box or Amazon’s cloud could be all you need. But, if you are planning to share and edit documents with other people, and link your drive storage to other products like blogs or online faxing, then Google and Microsoft are a better option.

Researchers create 3Gbps LiFi network with LED bulbs

Researchers at the Fraunhofer Henrich Hertz Institute (HHI) in Germany have successfully transmitted data at 3Gbps using conventional LED bulbs in a laboratory setting. In a real-world setting (at a trade fair), the same system was capable of 500Mbps.
The concept of visible light communications (VLC), or LiFi as it is sometimes known, has received a lot of attention in recent years, mostly due to the growing prevalence of LED lighting. Unlike incandescent and fluorescent bulbs, LEDs are solid-state electronics, meaning they can be controlled in much the same way as any other electronic component, and switched at a high speed. VLC is essentially WiFi — but using terahertz radiation (light) instead of microwaves (WiFi). Instead of oscillating a WiFi transmitter, VLC oscillates an LED bulb — and of course, on the receiving end there’s a photodetector instead of an antenna.
Now, unfortunately the Fraunhofer press release is almost completely devoid of detail, except for the 3Gbps bit — but we do have the technical specifications of Fraunhofer’s previous VLC system, which the 3Gbps system is based on. The previous VLC system was capable of transmitting up to 500Mbps over four meters (13 feet), or 120Mbps over 20 meters (67 feet). Rather than actually using a standard LED bulb, Fraunhofer’s VLC system is a black box, with an LED and photodetector on the front, and an Ethernet jack on the back to connect it to the rest of the network. In this system, the hardware only allowed for 30MHz of bandwidth to be used, limiting the total throughput.
To reach 3Gbps, the HHI researchers have found a way of squeezing 180MHz of bandwidth out of the LEDs — and instead of using just one LED, they now use three different colors. It is not clear whether this new technique has a higher or lower range than the previous, but it is likely the same. In real-world testing at a trade fair, with less-than-optimal atmospheric conditions, 3Gbps becomes 500Mbps — still pretty darn fast.
Visible light communication has a slew of advantages. In essence, LiFi can turn any LED lamp into a network connection. LiFi, by virtue of operating at such high frequencies (hundreds of terahertz), is well beyond the sticky tentacles of the wireless spectrum crunch and regulatory licensing. For the same reason, LiFi can be used in areas where there’s extensive RF noise (conventions, trade fairs), or where RF noise is generally prohibited (hospitals, airplanes). The Fraunhofer researchers even claim that VLC improves privacy, because your signal can be easily obscured from prying eyes with opaque materials — but as you can imagine, that’s also a tick in the “con” column as well.
Moving forward, we’re still waiting for the first commercial LiFi LED bulbs and LiFi-equipped laptops/smartphones to come to market. There are a few startups that are making headway, and numerous research groups, but no one seems to have a definitive roadmap for commercial products. With so many possible uses, from street lamp-to-car communications through to ultra-fast short-range communications, and the growing maturity of LED lighting, it’s really just a matter of time until LiFi becomes a reality.

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Wednesday, 3 July 2013


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Aim to Simplify IT Operations

All successful businesses have their budgets balanced and their employee processes set. If you want your business to be successful, you should do the same. Yes, public relations, human resources, and training are all important, but watching your budget and profit margin is what is going to keep you in business. Plus, your employees will be happy knowing that their paycheck is guaranteed.
One way to simplify tasks and save money on business costs is to use work-flow products that replace unnecessary employees. For instance, ORSYP’s job scheduling software allows you to export data or print timecard reports without manually entering timesheets. It’s also compatible with most project management software and work-flow products. This software also helps simplify your IT operations because it makes documentation easy with access to runbooks and notes.



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