EN3515 Lecture 4: Networking and the Internet Net Spaces Case Studies Network Hardware Network Software Network Standards/Protocols Internet Communication Strategies Evaluating Good Websites Net Spaces The landscape of Cyberspace The Matrix (main part of cyberspace] The Internet
Internet Communication Strategies
Evaluating Good Websites
The landscape of Cyberspace
The Matrix (main part of cyberspace]
The set of all resources accessible through the File Transfer Protocol on the Internet. The resources include directories of files and individual files that might be text or binary (executables, graphics, sound, and video) files. It is among the oldest spaces on the Net and has massive and often obsolete and polluted information on it. It is a major distribution area for software.
Recent trend of Files Transfer on Internet: P2P
There is no way to search the contents of documents at FTP sites. The only alternative is to use Archie--a tool that indexes the filenames at FTP sites and is good for looking for a software or shareware program of a particular name. Most of these “old world” Internet resources are integrated by WWW today.
Telnet is a protocol for remotely logging into a remote computer. Many Telnet sites still offer valuable and updated information (i.e. card catalogs of libraries). Using Telnet, you can also access your own e-mail account from a long distance.
Gopher, an information system designed at the University of Minnesota, is among the oldest spaces on the Net. Because of the rise of the Web, the Gopher traffic on the Net has declined. Here is the mother of all Gophers at the University of Minnesota
A good collection of subject-related Gophers is “Gopher Jewels.” A Web-version is at:
The Internet search engine history:
Build a peer-to-peer LAN
Build a client-server LAN
Build New Media Lab LAN
From CityU to Internet
Minimal items needed:
(or crossover cable)
Minimal items needed:
Link to outside
EN Staff LAN
A simple hierarchy of communication effects:
Communication that comes from trusted sources, reaches the targeted audience with appropriate format (means and channels) and content, and achieves the intended goals.
Although the Internet has “inherited” some features from the traditional media, it is distinct in several ways:
About one-third of the people using the Internet are connected through 28.8Kbps modems. A bit -- a contraction of the phrase binary digit --is the most elemental unit of computer information, either a 1 or a 0. One byte is made up of 8 bits. Therefore, a 75KB (75,000-byte) file would take 20.8 seconds to transfer at 28,800 bits per second.
From text-based, to more graphically-represented. From more passively transfer information, to more “interactive,” or even more “immersive” (immersed)
Example: http://www.activeworlds.com/ or http://www.worlds.com
Some specific goals in marketing:
Brochureware sites are the most commonly deployed ones on the Web. They are normally static, non-interactive and boring “about-my-business”sites.
Show-biz sites mean two things: First, those misguided attempts to lure visitors to shows of products; second, flashy and showy sites that feature technical dexterity.
Example: Lipton’s margarine http://www.tasteyoulove.com/
Utilitarian sites are those that offer Web surfers a genuine service and experience -- an interactive information/service utility. Federal Express’s (FedEx) site is a classic example.
Influenced by the hierarchical organization common in previous information systems such as Gopher, FTP and Telnet, the early ASCII design style relies heavily on hierarchical organization and links to extend meaning. This school is obsolete.
Example: a telnet web page design.
The classic three-part structure of head, body and column is popular with the use of graphical browsers because the visual impact of a single screen has more visual impact that the scrolling browsers, such as the Lynx browser.
Example: our course site
Marked by the use of graphics to draw attention, reveal choices and provide ornament, this style runs the gamut of expressions ranging from a single-graphic slab to a mixture of graphics and text often arranged in a grid to reveal functionality.
Examples: compare whitehouse.gov and amazon.com
Instead of conceiving a page as a fixed structure, a postmodern style generates a page based on user requests by the use of CGI programming to dynamically create web pages and graphics on the fly.
Example: HotWired (http://www.hotwired.com/members/)
The early virtual page involves Virtual Reality Modeling Language (VRML) and can be viewed as an environment in which the room or the scene becomes a unit of attention for the user.
The Internet is an invaluable source of information, communication, and interaction. It contains diverse information, some of which is good and some of which is garbage.
How to evaluate the information on the Net depends on the purposes and needs of the user.
Some basic needs:
1. Factual information 2. Entertainment
3. Socialization 4. Escape/diversion
5. Services 6. Business
Some good information providers:
1. Academic institutions/experts
2. Tradition mass media
3. Government organizations (i.e., U.S. Census)
4. Major corporations
5. Reputable newsgroups/sites
1. Lists of top (good) sources
2. Frequently visited sources
3. Frequently linked sources
4. Databases provided by professional providers
Ten things to bear in mind:
1. Traffic might be heavy.
2. Servers can go down.
3. The Net can go down.
4. Resource names can change.
5. Resources can disappear.
6. Resources can be HUGE.
7. Links can break.
8. Your senses might be overloaded.
9. You might be shocked.
10. You can get sick.