Consumer electronic devices on your home LAN

We talk about home LANs and their eventual convergence with consumer electronics like TV sets and audio equipment.

This New York Times article surveys some of the Internet-ready consumer electronic devices that were shown at a recent German trade show.

Do you have a home LAN? If so, is your TV, sound system or any other consumer electronic device connected to your LAN?

Technology transitions -- the early days of the Web

Today's freshman cannot remember a time before the Web, but, at first, HTTP and HTML were just newly proposed protocols without users. In the early 1990s, email, file transfer, network news, and remote login were important Internet applications. We also read documents from Gopher servers, and found them using search services like Veronica, WAIS, and Archie or a directory called "Jerry's Guide to the World Wide Web," which was maintained by two graduate students and later renamed "Yahoo!".

Gopher sites had tables of contents with links to documents, but no links within documents. The text could not be formatted (as we do with HTML today), and there were no images, only text. Web files were larger than Gopher files, but that became less important as communication speed -- faster modems -- improved.

As with all technology transitions, the Web protocols co-existed with Gopher and related search engines for some time. John December, a graduate student at the time, documented this transition period and his outlook for the Web in a book and in this article.

Can you give an example of another emerging application that depends upon increased communication speed? Increased storage capacity? Increased computation speed?

Computer science research leads to commercial products

Computer scientists at universities and the research labs of companies like Microsoft, Google or IBM work on new ways of doing things that may one day be used in commercial projects. In addition to theoretical studies, they often build hardware or software prototypes that test and demonstrate their ideas. (The slogan "demo or die" is common in such labs).

They also publish papers describing their work in technical journals and conference proceedings. One can get a glimpse of the future by reading those papers and attending conferences. For example, the 2008 conference of the Association for Computing Machinery Special Interest Group on Computer Graphics (SIGGRAPH for short) was just held in Los Angeles. Projects presented at SIGGRAPH foreshadow tomorrow's image and video editing programs. For a first look at features that might one day be in Photoshop or Windows Movie Maker, check these projects:

• Three-D photo viewer: combine many photos of the same object (like the statue of liberty or Notre Dame Cathedral) into a panoramic scene over which the user can pan and zoom.
• "Unwrap mosaics" for video editing: modify an object like a person's face in one still frame, and have the change propagated automatically throughout the video.
• Using photographs to enhance videos of a static scene: combine a video of a scene with a few still photographs to enhance the video by improving resolution, dynamic range, or touching up or removing objects.
• Face swapping: automatically replace faces in photographs.

You will find demonstration videos and technical papers at each of these sites.

The case of Pixar Animation illustrates the research-commerce relationship. In 1986 Pixar, then a brand new company, showed its first film, a short called Luxo Jr., at the SIGGRAPH conference. Watch Luxo Jr. and you will note things like the accuracy of moving light, shadows and reflections and the sinusoidal movement of the lamp cord when Luxo jumps. Achieving that sort of realism was state of the art research in 1986, therefore relevant for a scientific meeting. (The creation of a cute character was not science, but story telling art). The interplay between research and commerce continues -- Pixar employees presented a technical paper and a course at SIGGRAPH 2008.

Entrepreneurs and venture capitalists watch developments at research conferences like SIGGRAPH for ideas -- what are some other computer science conferences?

How can we achieve broadband competition?

We have discussed Columbia University Law Professor Tim Wu's wireless policy recommendations. In a recent NY Times editorial, he addresses broadband policy in general. Wu compares the US telephone and cable companies control over Internet connectivity to OPEC's control over world oil production and price.

Wu says Americans spend almost as much on bandwidth as we do on energy, and both are important to the economy and quality of life. (See our exercise on the cost of home connectivity and content).

He is aware that the US connectivity has fallen behind many developed nations, and feels we need to act to increase competition. He suggests municipal networks, customer owned fiber, and more license free spectrum. He concludes that "there is a pressing need to explore all alternative supplies of bandwidth before it is too late".

Roads, sewer systems, electricity and water are often supplied by municipal, state or federal government agencies. Do you feel there is a role for government in broadband communications? Can you state an argument for government participation? Against it?

Google Analytics and Webmaster Tools

Google Analytics and Google Webmaster Tools are free services that help you improve your Web site and increase traffic and visibility.

Google Analytics:

Google Analytics enables you to track traffic and visitors to your site during a given day, week or month. The reported statistics include:

• the number of visitors
• where they were located (city, nation, region, continent)
• how many pages they viewed
• which pages they viewed
• which browser and operating system they used
• what their screen resolutions and connection speeds were
• how many came directly, from search engines, or from referring sites

(You can see a call to Google Analytics just before the "/body" tag at the end of my home page. A call like that one must be inserted in every page you wish to track, but it can be inserted automatically using an "include" file).

Google Webmaster tools:

Google Webmaster Tools report information their search engine finds when "crawling" your pages. Information includes:

• diagnostics -- which pages on your site have problems like broken links?
• top search queries -- which queries returned your site and what was its rank?
• external links -- which sites link to your site, and which page do they link to?

Google Webmaster Tools also enable you to upload a sitemap file for your Web site. A sitemap file is a list or your site's URLs. Adding a sitemap file to your Web site will improve your Google searches (though Google does not reveal how they use the file).

A sitemap file must be in a standard (XML) format, and creating one by hand would be tedious. Luckily, there are a number of programs to automatically generate sitemap files. Maposite.com is a handy service for generating sitemap files. Once you have generated the file, you upload it to the root of your Web site, and let Google Webmaster Tools know it is there.

Wikia search combines explicit and implicit user input

We discuss the importance of user supplied content. For example, all Wikipedia content is explicitly entered by users who create and edit entries.

Google also uses user supplied data. The more links there are to a given page, the higher its search ranking. Every time someone creates a link to a Web page, they implicitly give it a vote. They do not have to take extra time or effort -- the value of the data to Google and the Internet community is a by-product of creating the page.

The Wikia search engine uses both implicit and explicit user input. A Wikia search turns up listings similar to Google's, but lets the user evaluate and comment on the search results. To test it, I did a vanity search on my own name.

As shown here, Wikia found my home page and a number of other pages containing my name, and displayed them in the conventional Google style:



But, unlike Google, there are several input options on the right side of the screen. A user can edit, annotate, spotlight, comment on or delete the search result. As shown here, I spotlighted the entry and added a comment stating that this was my home page:



Wikia is separate from Wikipedia, but Jimmy Wales was a co-founder of both. You can read an interview of Wales on his hopes for Wikia search here.

Do you consider del.icio.us tags explicit or implicit? If you did a search, would you take the extra time to add comments to the result?

Ten technologies to watch

The Gartner Group, a prominent IT consulting and research firm, has published a list of ten technologies they believe will change the world in the next four years:

1. Multicore and hybrid processors
2. Virtualization and fabric computing
3. Social networks and social software
4. Cloud computing and cloud/Web platforms
5. Web mashups
6. User Interface
7. Ubiquitous computing
8. Contextual computing
9. Augmented reality
10. Semantics

One can argue with the choices -- they were probably dreamed up in a brainstorming session around a conference table. One can also question the value and expertise of consulting firms like Gartner, as Robert Cringely did recently. But, this still serves as a checklist of technologies to keep an eye on. At the very least, you should have an idea what each is.

You can join in on a discussion of Gartner's list at Slashdot.

Which of these technologies seems like the most fun to work on? Gartner is only one of many IT consulting and research firms -- what are some others?

Free tools for working with Flash video files

Flash (.flv), probably the most common Internet video format, is used by Youtube and many other sites. If you download a video, you you might want to convert it to another format, strip off the audio as an .mp3 file, or edit it. Check out this list of free tools for processing Flash video.

Senator Lieberman objects to terrorist video on YouTube

We saw earlier that al-Aqsa Martyrs' Brigades were using Google Earth to site targets. Terrorist organizations also use the Internet for recruiting, logistics, propaganda, etc.

Joseph Lieberman, chairman of the Senate Homeland Security and Governmental Affairs Committee, asked Google, the parent company of the YouTube, to "immediately remove content produced by Islamist terrorist organizations" from the site and prevent similar content from reappearing.

Google, refused stating “While we respect and understand his views, YouTube encourages free speech and defends everyone's right to express unpopular points of view.”

A spokesperson for Lieberman then stated that the senator found the response unsatisfactory and was troubled that the company "does not appear willing to change its guidelines to prevent foreign terrorist organizations (as designated by the State Department) from posting videos used to radicalize followers and incite them to violence."

Evidently Lieberman feels that the Islamist organizations have a right to free speech in the US, but that Google does not have the obligation to publish their speech.

Every nation makes some attempt to control Internet content. Some ban pornography, others the sale of Nazi memorabilia, etc. Do you think Google should comply with Lieberman's request? What are the moral considerations? The practical business considerations?

User supplied content and network effects

We discuss the value of user-generated content. An early example was Amazon.com, which beat a better established competitor, Barnes and Noble, by encouraging people to submit reviews of books.

Wikipedia and Craigslist are two other well known examples. The Wikipedia Foundation, which runs one of the most visited sites on the Web, had only 14 employees as of March 2008. Craigslist had only 23 employees in October 2006 yet it was one of the ten most visited Web sites, as we see here:



This list may be exaggerated -- other companies like the BBC and Disney have diverse interests going far beyond their Web sites and revenue at Craigslist is far below the other companies on the list -- but it makes the point that providing a uniform place for users to post their content is sufficient to build a very valuable service.

Ebird provides another example. Ebird is not commercial -- it is a citizen science site, operated by the Audubon Society and Cornell University, where bird watchers can submit their observations. Ebird gives individual bird watchers a secure, handy place to store their observations, and the collected data may be analyzed for scientific purposes, as we see in this map showing the US Osprey population:



Services which, like these, grow in value as the number of users (content contributors) grow, are said to enjoy network effects.

Can you give examples of other services that rely on users for content and enjoy network effects? Can you think of such a service that might be of value to students on our campus? To students world wide?

Clearwire, Sprint, Intel and Google shoot for mobile Internet access

We discuss mobile connectivity. Today, third generation cellular is the most common means of mobile connectivity, but wireless communication using WiMAX technology is becoming available for both fixed and mobile applications.

Sprint and Clearwire have planned WiMAX deployment for some time, but they have now formed a new company and taken in strategic partners Intel and Google. The new venture, also called Clearwire, plans to be available to between 120 and 140 million people by 2010. That is only about 40 percent of the US, but it is significant.

Intel is a leading WiMAX hardware vendor. Today's laptops usually have WiFi radios for local area connectivity, and Intel wants tomorrow's laptops to also have WiMAX chips for wide area connectivity. Google is interested in mobile computing and wants their applications, Youtube videos and ads to be on every cell phone and mobile Internet access device.

If you could get high speed mobile access using a handheld device like an Apple iPhone, what would you use it for? How much would you be willing to pay for the mobile service? Would you want your phone to be separate from your Internet access device?

Clearwire hopes to be available to 40% of the US population by 2010 -- which areas will get service first?

Abilene Christian converts to Google Apps for Education

We discuss the pros and cons of using Internet services, and have seen that several universities are using Internet services for some of their IT applications.

Abilene Christian University is a recent convert to Google Apps for Education. The "easy", "no brain" decision has saved them $100,000 per year while improving service, security and reliability. The savings came from eliminating servers and one position, but rather than cutting staff, they re-assigned the position from administrative computing to development in support of instruction.

The primary applications have been Google email, shared documents, and shared calendar. They are also pleased that the Google applications are compatible with the iPhone and iTouch Internet access devices incoming freshmen receive.

You can read more here and here or watch CIO Kevin Roberts describe their decision, the conversion process, the applications and advantages in this four minute video clip.

What are the advantages of Google's Gmail over our current campus email system? What would be the drawbacks or risks of converting to Gmail and other Google applications?

Web anniversary -- 15 years in the public domain

We discuss IT history, including that of the Web.

Today is the fifteenth anniversary of the placing of the Web in the public domain -- enabling it to grow to what it is today.

In 1989, Tim Berners-Lee was working at CERN, the European Organization for Nuclear Research. He proposed that CERN develop a hypertext (link) based document management system for the Internet. You can read his proposal here.

The proposal was accepted and work began on what would become the first Web client/server.

On April 30 1993, CERN placed the Web software in the public domain, allowing anyone to build and use Web browsers and servers without paying a royalty. The BBC published several articles commemorating the fifteenth anniversary of that date, including:

• The World Wide Web turns 15 (again)
• Web in infancy, says Berners-Lee
• Luminaries look to the future web
• How the web went world wide
• Questions and answers: Tim Berners-Lee

What do you think would have happened to the Web if CERN management had decided to copyright the Web protocols and software and charge royalties for those wanting to use them?

Analyzing and improving Web site performance

We discuss the HTTP protocol and Web site timing. WebSiteOptimization is a good source of information about speeding up your Web site. The site includes:

• A free Web site analysis and optimization service, which breaks out the load time of all Web page components and makes suggestions for improving performance.
• A speed tweak of the week -- weekly tips on how to improve Web site performance.
• Data analysis like this paper showing a three time increase the average size of a Web page and doubling of the number of objects during the last five years. (The average Web page is no longer useful for those with dial up connections or those in developing nations).

Should you write a paper or create an ad hoc blog?

I just gave a presentation on computer literacy courses at a conference. People typically write papers for publication in a conference proceedings, but I decided a companion blog would be more useful.

Creating an ad hoc blog for a project, event, or, in my case, a conference presentation, takes only a few minutes, but providing the content is somewhat more time consuming than writing a paper for publication.

My ad hoc blog ended up with 2,964 words in 9 posts. Writing it took longer than writing a paper of the same length with 9 sub-headings because of the inclusion of 76 links to references and enrichment material. Some of those 76 links would have been references in a traditional paper, but I would have left most of the enrichment material out. Since I was writing for a blog, and knew the reader could easily skip a link or follow it, I left them in. Adding the links is mechanical, but discovering and reading the enrichment material was time consuming. It also meant I learned more.

The division of the blog into 9 separate posts, each of which stands alone, allows the reader to focus only on portions of interest. Category tags and full-text search also help the reader focus and make sub-sections more discoverable.

Reading a blog is different than reading a paper. The author does not specify a reading sequence, and transitions between sections (posts) are not explicit. These drawbacks could be overcome by knitting the blog posts together into a linear paper or by preparing an overview post -- an extended abstract with links to the individual posts. Writing a traditional paper or an overview post would be relatively simple once the blog was complete, but it would still take time. (I will do both when I find time).

An electronic publication like an ad hoc blog is also mutable, whereas a conference proceedings is fixed once it is published. For example, I revised the Internet Writing post twice after publishing it. The blog also allows for comments and other feedback. Of course, an online conference proceedings can also be changed and feedback can be solicited.

The blog might also continue to grow. The first nine posts of the computer literacy blog were related to my presentation, but the tenth summarized a related presentation I heard at the conference. Some ad hoc blogs may continue after the event.

A final consideration is academic credit. Even if a blog is more effective than a paper, an academic writer may be reluctant to go that route due to publication pressure. The traditional notion of academic publication is out of date.

You often write term papers for classes. Would creating an ad hoc blog be preferable? Why or why not?

Writing for the Internet: conversations, short documents and collaborative wrting

Netcraft publishes a monthly survey of the Web. Their April, 2008 survey reports 1.1 million new blogs were created using Blogger alone.

Some of those 1.1 million are just tests, and they will be abandoned. Others are ad hoc blogs, set up for a single event or project. Others will go on for years. Regardless, it is clear that a lot of people are writing for blogs -- professionally and personally.

We should examine our writing curriculum with this in mind. What sorts of things will our students be writing after graduation? Much of what they write will be for the Internet or intranet. That means they will be participating in electronic conversations, writing short documents like blog posts or Web pages, and doing collaborative writing.

You can read more on this topic in a post on the impact of the Internet on the writing curriculum.

A student recently wrote "I will write 42 pages for class this semester ... and over 500 pages of email". How many pages will you write for your classes this semester? How many emails, blog posts, instant messages, twitters, FaceBook pages, etc. will you write for the Internet?

Does being open pay off?

In spite of setbacks and roadblocks, there is an overall trend toward increased Internet and telecommunication openness and standards. (The ball started rolling with the 1956 Hush-A-Phone Case which forced AT&T to allow us to attach devices to their network).

We talk about openness and transparency in various contexts. We talk about the end-to-end, dumb Internet where anyone can run any application and connect any device. We talk about the cellular providers trying to keep control over their networks, but gradually begining to loosen up. We have seen record companies first try to control music copying, then starting to sell unprotected .mp3 songs. YouTube is open to all comers as are FaceBook, MySpace and thousands of other sites. I came across a different sort of openness while ordering a book at Amazon.com.



As you see here, Amazon sold new copies of the book I wanted for $18.25 plus shipping. They also listed offers to sell the same book from 36 of their competitors. One competitor, FeelGoodReaders, was selling the book new for $14.55 and another had a used copy that was "like new" for only $12.75. In fact Amazon listed 12 competitors who were selling new copies of the book for less than their price of $18.25 and many others selling cheaper used copies. Amazon also told me that FeelGoodReaders had an excellent reputation -- 99% of their customers gave them positive reviews.

Based on this, I bought the book from FeelGoodReaders. Was Amazon hurt or helped by their openness? What did the decision to show the competitor's prices and customer ratings cost Amazon? Did it benefit them at all? Did it benefit the economy?

Soon we will have Internet video cameras in our pockets

Video is now a common Internet data type and mobile Internet access devices are becoming available. You can see the convergence of these trends in this video of a test drive of a Tesla electric car:



The audio and video quality is poor, but it was shot using a Nokia N95 cell phone camera and streamed on the Internet as it was being recorded.

(The video is worth watching in its own right -- Tesla's founder discusses their technology and plans for the future while taking a joy ride).

We saw the Apple iPhone this year, and large phone vendors are now demonstrating their own mobile Internet access devices. Soon portable video cameras will be ubiquitous.

Ubiquitous, Internet-connected video cameras will be used for many business and personal applications. Will they also affect politics and government? Would it have mattered if the students at Tienanmen Square or the recent Tibetan demonstrators had been online? How many athletes and spectators will be online in China during the upcoming Olympic Games? How many people will be online in Iraq next year?

Today's students take the Internet for granted and want to use it in school

We have seen that today's students have been raised with information technology (see
Beloit College Mindset list and Characteristics of today's students).

In a recent three part column, Robert Cringley noted that schools are now full of computers, but, increasingly, technical resources are devoted to keeping students from using their information technology -- defending against instant messaging, blogging, Web surfing, reading and writing email, twittering, playing games, etc. during class and exams as well as against plagiarism.

Cringley thinks we will be forced to accept student's use of technology, stating

We've reached the point in our (disparate) cultural adaptation to computing and communication technology that the younger technical generations are so empowered they are impatient and ready to jettison institutions most of the rest of us tend to think of as essential, central, even immortal. They are ready to dump our schools (my emphasis).

That is a strong statement -- do you feel it is over the top?

You can read Cringley's three columns for yourself Column 1, Column 2, and Column 3.

Intel RCP -- a packaged rural wireless solution

We discuss wireless communication, and an earlier class used WiFi wireless technology to connect our campus dorms to the Internet. They used 802.11A for the links between the dorm buildings and 802.11G to connect to student's computers in their dorm rooms inside the building.

Intel has taken a similar approach with their Rural Connectivity Program (RCP). (Watch the short video). They have combined the components we used in the dorm into a single, commercial package. An Intel RCP node puts two radios (one using 802.11A for a long distance link and a second using 802.11G for user connectivity) in a weatherproof box along with antennae for local access and a high-gain, focused antenna for the longstance link. They also modify the modulation method to improve communication speed and reliability.

Our dorm buildings are only 100 or so meters apart, whereas Intel intends RCP links to be as much as 60 miles apart. Their goal is to provide a link from a rural village or farm back to an ISP for Internet connectivity. Their target market is developing nations, but many rural areas in the US also lack connectivity.

Can you think of a place where Internet access is not available in the US? Would Intel RCP offer a solution?

Synchronous collaboration -- working in different places at the same time

Several years ago -- before the Web was invented -- I was at the home of a Russian networking pioneer. I noticed that he had a computer in his living room that was connected over dial-up phone line to the Internet connection at his office. He told me he had called the office six months earlier, and, since there was no charge for local calls within Moscow, he never hung up the phone.

The cost of Internet connectivity is fixed -- you pay a flat fee for the month. That fee structure encourages same-time collaboration. Consider the way this programmer describes his work day.

He works with a colleague in a different state, but they remain in constant communication -- as if they were in the same room. Like my colleague in Russia, they open the connection between them when they arrive at work, and leave it open all day. He mentions using several networked applications -- Skype (VOIP), IRC (chat), Wiki (for documentation), and VNC (screen sharing) -- to facilitate collaboration.

(The recorded comment was made by an audience member at a panel discussion on attention).

But, can we have rich, emotional communication over the Internet? In 1980, artists Kit Galloway and Sherrie Rabinowitz connected larger-than-life video displays in Los Angeles and New York using a satellite link. They called the event "Hole in Space," and it was The Mother of all Video Chats. They demonstrated that, with sufficient bandwidth, emotion and presence could surely be communicated. Here are some video excerpts from their experiment followed by a short public-policy rant.

Characteristics of today's students

We have discussed the Beloit College Mindset List, which characterizes today's incoming freshman class.

Michael Wesch's video Vision of Students Today is similar, but perhaps a bit darker. The video shows students in a large lecture hall holding up signs stating their characteristics.



Many of the characteristics it portrays have to do with the Internet and its implications and applications. For example:

• I spend 3 1/2 hours a day online.
• I will write 42 pages for class this semester ... and over 500 pages of email
• I will read 8 books this year ... and 2,300 Web pages and 1,281 FaceBook profiles.
• I buy $100 textbooks that I never open.
• I bring my laptop to class, but I'm not working on class stuff.
• I FaceBook through most of my classes.
• This laptop costs more than some people in the world make in a year.

The video was produced by Wesch and his cultural anthropology students at Kansas State University. Visit their Web site for more information.

Last, but not least, check out this Doonesbury cartoon.

Television video is becoming economically feasible

We discuss the notion that new data types become economically feasible as technology improves. A New York Times article indicates that television quality video may soon be common on the Internet.

As shown here, over 100 million videos were streamed from four network Web sites during December, 2007.



The Times also reported that 2.7 million people watched the season four premier of The Office on the Internet and 9.7 watched it on television. (The Office is a dialog-heavy program, better suited to the computer screen than an action program). The article also mentions a survey conducted last October by Nielsen Media Research which found that one in four Internet users had streamed full-length television episodes online during the previous three months.

Note that these surveys were taken in the United States, where connectivity is mediocre by the standards of developed nations.

Have you watched a television episode on the Internet? If not, why not? If so, how was the experience? These surveys refer to television quality video. Would high-definition TV programs or movies be as common on the Internet?

The Beloit College Mindset List -- Technology changes the experience of young people

We cover the implications of technology for individuals. For ten years, Beloit College has published its Mindset List of characteristics of the incoming freshman class. The list for each year has about 70 items, and some of them are relevant to our course. For example, the lists for the classes of 2010 and 2011 include these statements about incoming freshmen:

• They are wireless, yet always connected.
• “Google" has always been a verb.
• Bar codes have always been on everything, from library cards and snail mail to retail items.
• They have rarely mailed anything using a stamp.
• Being techno-savvy has always been inversely proportional to age.
• Music has always been “unplugged.”
• Thanks to MySpace and Facebook, autobiography can happen in real time.
• Virtual reality has always been available when the real thing failed.
• The World Wide Web has been an online tool since they were born.
• They’re always texting 1 n other.

(Click here for more student characteristics).

Do these and other items on the list accurately describe you? In what ways should our class change to reflect these changes?

37Signals -- excellence in Internet customer relations

We discuss progress in storage, electronics and communication, and it is common knowledge that all three technologies are improving exponentially. Everyone speaks of "Moore's Law." (But few read the short article that gave rise to the term).

What do companies do when better technology cuts their costs? Most grin and watch their profit margin rise. But, another alternative is to create good will by passing some of the savings on to customers.

When I logged on to my 37Signals Basecamp site yesterday, I was pleasantly surprised to see this message:

More storage space for the same price!

Last night we increased file storage space for Personal through Premium plans. Personal plans now get 1 GB (up from 250 MB), Basic plans now get 3GB (up from 500 MB), Plus plans now get 10 GB (up from 3 GB), and Premium plans now get 20 GB (up from 10 GB). Max plans remain at 50 GB for now, but if enough people start to hit that limit we will increase that limit as well. We hope you find the increased storage space useful and thanks again for being our customers!

That, combined with their forthright handling of a recent service interruption, is a case study in good customer relations!

Which do you feel has done a better job of passing technology improvements along to the consumer -- PC companies or telephone companies?