Sitting by the Fireside

picture-3-1.jpgThe Fireside chat took place this morning for the K12 Online Conference. There was a good roll-up of attendees via the Elluminate platform, topping out at one point at about 110 people. David Warlick was on hand to answer some questions from the group, and people were firing questions at him at a rapid pace. The chat stream was like a fast-flowing river, with comment after comment after comment streaming up the screen. Sometimes I wonder how effective these really large chat streams are, as it’s so hard to have a deep discussion let alone a coherent conversation! As someone noted in the chat, it was like being ADD on steroids.

However, the opportunity to connect with a worldwide group of educators and engaging in discussion and conversation about things that we think matter was wonderful. David did well to field the diverse (and sometimes quite difficult!) questions from members of the group. I even got to throw a question to David myself.

Virtual environments like this are an interesting experience, and it was clear that it was a new experience for many there. It was great to see so many people turn up for it, take part in the event, and learn from it.

You can listen to the audio version of the chat here (53 Minutes, 17Mb)… unfortunately, Audio Hijack didn’t get both sides of the conversation all the time, so you can’t hear all of the questions being asked by the audience, but you do get the answers from David and the Moderators. Still, I’m sure you’ll get the idea!

http://www.virtualstaffroom.net/k12online/fireside.mp3

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So much more than phone calls

In the leadup to the release of Apple’s iPhone there was a great deal of talk about the device, mainly on MacBreak Weekly and the Apple Phone Show… both excellent podcasts that set a real benchmark for quality when it comes to the podcasting medium. There was tons of pontificating and prognosticating about the iPhone, and how it would change the cell phone market forever.

All that aside, one of the theories I heard over and over was that most people never actually tap into the full capabilities of their cell phone, with a huge majority of people using their phone just to make phone calls. Imagine that! The idea that most people never really explore their phone’s capabilities really hit home to me the other day at a conference when I saw a demonstration of a video made by a guy from footage he had very proudly taken with his phone. It was a few shots edited together with some music under it, and I asked the question at the end “Did you edit that on your phone?” He replied “No”, and then, after a pause, said “Can I do that?” Like I said, most people don’t ever explore the full features of their phone.

Being the geek that I am, I am not one of those people. I think I probably use nearly the full range of capabilities of my phone, so I thought it warranted a blog post to just talk about what exactly I do with my phone and some of the uses I have for it as a fairly fluent digital immigrant.

I don’t have an iPhone. I’d like one, but instead I own a very simple, very basic, very cheap, Sony Ericsson K610i. It was the cheapest 3G phone I could buy, but I’m amazed at what it is capable of, especially when combined with the 3G network service. Obviously, it can make phone calls and has all the usual features that a voice phone would have… address book, call register, and so on. It has a hands free mode, and can work as a speaker phone. It comes with a headset for in-car use and can also connect to a bluetooth handsfree kit for use while driving. It has a calendar for remembering appointments, a notepad for taking notes, a sound recorder, a task list, a stopwatch, a calculator and an alarm clock. I use all of these tools regularly, in fact I use the alarm clock to wake myself up every morning. I’ll concede that the standard text entry interface is not really optimal for some of these apps, but it’s good enough to be usable in small doses, which is all I ever really need it to be.

There are a ton of useful messaging options on the phone… SMS which I use a lot, and also email, MMS and voicemail. I can send pictures and videos, as well as text, through these different formats. I send and receive a quite lot of SMS, so I like the way it manages the messaging with the usual inbox, outbox, sent mail paradigm. There is also a templates mode, so messages that are sent often can be templated so you don’t have to type them from scratch all the time. That’s a useful feature.

I’m also impressed that the phone has an RSS aggregator built in. I can subscribe to blog feeds on the phone and it will regularly check the web to see if there are updates. It works exactly as you’d expect… when the phone finds an updated feed it indicates it on the main screen. This is a super-useful feature, and one I use a fair bit.

Being a 3G service, the phone’s service provider offers an interesting range of sites within the walled garden of their network. Hit the browse button and I can access news, weather, sport, comedy, finance news and special features like mobile TV. This is all video based too, so I can watch it all with proper video. I don’t often watch the TV news, but I will sometimes reach for my phone before I get out of bed in the morning and catch the early news bulletin, check the weather or watch a bit of Family Guy before I start my day. Other things I can get from the network include music video clips, ring tones and wallpapers but I have never bought any of these… more on that later. Other useful services include the ability to check the cinema guide for my nominated local cinemas, and watch trailers for the latest films. I can check my horoscope, find out what’s on TV, look up a restaurant in the food guide, check what bands are playing, or see what’s on TV. I can look up a train or bus timetable, check my lottery numbers, get the racing results, and even browse through online services like eBay, realestate.com or RSVP. This really does start to make you realise how the information landscape has changed. Our kids carry these information appliances around in their pockets. Adults just make phone calls. We are so on different planets.

The phone is also a media center. Load it up with MP3 or M4A files and you have a reasonable music player. It’s not quite an iPod, but it’s not too bad. It takes removable memory cards so you can store as much as you have space for. Flip the phone over and there is a decent camera built in the phone. It’s not a fabulous camera, but it’s ok, and given a decent amount of light it will take a pretty acceptable image. Once you take a photo, you have the ability to send it to someone via SMS or email, and you can also Blog it directly from the phone. Yes, the phone is able to establish a direct connection to a nominated Blogger account and send photos directly from the phone to the web in three clicks. Very cool, and something I use ALL the time.

It also takes video. Not the greatest of quality, but good enough. And yes, built into the phone is software called VideoDJ which lets you edit your clips together, directly in the phone. Once you capture the footage, you can trim and edit each one, arrange them in order, add a soundtrack and text and transitions, include stills, add music… all within the phone itself. It really is quite an impressive app for something so lightweight. Once the edit is complete, you have an option to send it to another phone as an MMS message, or to export to a computer using Bluetooth. Very cool, and so easy to use. (Hmmm, I might have a film festival at school where all the films have to be made on the students’ mobile phones! Could be interesting.)

Since the phone can also run an Java based application, there are lots of possibilities there too… as well as the obvious games (which are generally pretty naff) you can also get a portable Java version of Google Maps (including the ability to find locations and to navigate from place to place), Gmail, MSN Messenger and Opera Browser. I’ve also added a thing called Salling Clicker, which lets me use the phone as a remote for my Mac and enables remote control of slideshow presentations, iTunes, iPhoto, and a bunch of other computer-based uses. Finally another app called Shozu is a digital upload centre for all your mobile media. From within Shozu you can upload any media file (photos, audio, video) to virtually any web service (blogs, YouTube, Flickr, etc). So photos that get taken on my cell camera can be pushed straight to Flickr on the spot where they will quickly appear on my blog thanks to the Flickr widget. It really is quite impressive. Using the inbuilt web browser (or Opera) I can browse the web, search Google, check Twitter… all from the phone. I realise that most people don’t do all this stuff with their phone – they just make phone calls – but look at what is possible.

Finally, I just love the simple Bluetooth connectivity to my Macs. With a couple of mouse clicks I can drag media to and from the phone using the Mac. I can use the Sync tool to wirelessly synchronise my phone’s address book to the Mac Address Book app. Seamlessly. Simply. In fact, the other big plus for the Bluetooth connectivity is how easy it makes it to add media to the phone for things like ringtones and screen wallpaper. I use Photoshop to trim my favourite photos to 176×220 pixels to fit the mobile’s screen, and I use Audacity to edit MP3 files into short grabs to use as ringtones… it’s easy to do, easy to transfer, and makes the phone a lot of fun to use.

Amazingly, all this is available on just a standard, garden-variety cell phone. Nothing fancy. Unlike a lot of users, I DO actually use most of this stuff quite a lot. Apart from the fact that I really do enjoy learning about this stuff, I also enjoy the idea that I am learning about and using the same technologies that the kids use, and on that basis alone I really hate hearing adults say “I just use my phone for making phone calls.”

That’s so last century!

Magical Bundles of Numbers

The other day, a colleague on a mailing list asked for some background info on EPS graphic files. It seems her school wanted something professionally printed and the printer asked that the artwork be provided in EPS format. Thanks to the ubiquity of the web, we are mostly only exposed to the more common web graphic formats like JPEG and GIF files these days, so some of the more exotic types like EPS are not as well understood as they could be. For what it’s worth, here is my reply…

Ah, EPS files! A thing of beauty and a joy forever!

For anyone who works with graphics Encapsulated Post Script, or EPS files, are the holy grail of image formats. They are the ideal format for storing original artwork, although they are generally pretty useless for actually applying that artwork to a final format. By that I mean that most final applications for graphics, whether it be the web or printed documents, cannot use EPS files natively. But for a way of storing the original artwork, EPS files reign supreme. Here’s why…

Imagine you have a school logo image that gets used for a variety of purposes. It gets printed on school letterheads and business cards in very small sizes, reproduced on school coffeemugs and Tshirts at slightly larger sizes, and even gets blown up to very large sizes to make a banner for outside the school on open day. To get an image that looks good at all these different sizes, the artwork needs to be at different resolutions… A small jpeg file suitable for printing on the letterhead will look awful when stretched to be a large image for a banner for example. What you need is a way of creating these images that is resolution independent, so you can have the right resolution for the right situation.

That’s where EPS files come in. In an EPS, all the shapes and lines in the image are described mathematically. A very simple example would be a circle… Imagine you had a circle in an image, all you’d really need is the formula for creating a circle and the specific information about that particular circle. Mathematically, a big circle is exactly the same as a little circle but with different values for the key factors of radius, colour, edge thickness, etc… In an EPS file, this technique of using functions to describe objects is how the shapes are defined. This is very different to a JPEG or GIF, where shapes are created by a mosaic of pixels placed next to each other, a technique known as Bitmapping. Using bitmapping, a small circle and a big circle are two totally different patterns of bitmaps, which is why small graphics look so awful when they get stretched to be larger… You cannot just create new pixels from out of thin air to fill the gaps… the original pixels need to stretch, making the image look blocky and rather awful.

So in an EPS, the basic mathematical descriptions of the shapes that make up the image (called vectors) are embedded into the file using a language called PostScript. Postscript is a language that many laser printers use to describe how an image will be printed… When you print to a postscript-enabled laser printer, your printed image (whether that be text or pictures) is bundled up as little mathematical descriptions and sent to the printer where it is decoded back into the images and then printed. EPS files are that bundle of mathematical descriptions which define the image, but instead of being decoded by a printer they are just stored as a file.

Here’s the good bit… When you open an EPS file (which is vector based) in a graphics editing program like Photoshop (which is bitmap based), it asks you what size and resolution you’d like the image to be created at. Once you tell it the desired size and resolution, the EPS is then converted to a bitmap using the exact values you specify. This is the real magic of an EPS file… EPS gives you a single vector-based, size and resolution-independent file that unpacks to a bitmap-based, size and resolution-specific file at whatever specs you like. No wonder people who work in the printing industry love ‘em! They can be all things to all people. A single EPS file can be used to convert the image into whatever size and quality is required, be it the tiny artwork for the business card or the huge artwork for banner.

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