IST 195 Lecture Notes - Lecture 3: World Wide Web Consortium, Web Content Accessibility Guidelines, Apache Hadoop
5 May 2018
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Department
Course
Professor
Mainframes- a large high-speed computer, especially one supporting numerous workstations
or peripherals. CPU
○ A mainframe is a large expensive, powerful computer that can handle billions of
transactions per day
○ Mainframes process more than 83% of transactions around the world
○ Typically costs start at 6 figures
● Super Computers
○ A supercomputer is the fastest, most powerful computer
■ Fastest supercomputer are capable of processing more than one
quadrillion instructions in a single second.
2B
Social Media
Facebook= Largest News Org.
● News organizations do two major things, commercially speaking:
○ They use news to grab attention and then
○ Sell that attention to advertisers
FB Algorithm
1. Affinity: How close is the relationship between the user and the content?
2. Weight: How likely the content being shared will drive engagement (photo vs. text
update)
3. Time Decay: how recent/current is the content?
4. Video: % completion (calculated by a user who watches greater than 50%)
5. Posts based on timely news
Week 3
Web Programming
Rehabilition Act of 1973- Everyone, even people with disabilities, should be able to use the
internet.
-accessible electronically- must be accessible for those with disabilities
Americans with Disabiltiies Act of 1990 (ADA)
-ADA applies to the public sector whereas the Rehabilitation act applies to federal and
federally funded programs
Web Content Accessibility Guidelines (WCAG)- The World Wide Web Consortium (W3C) is an
international community that develops open standards to ensure the long-term growth of the
Web.
Common Issues:
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Mainframes- a large high-speed computer, especially one supporting numerous workstations or peripherals. A mainframe is a large expensive, powerful computer that can handle billions of transactions per day. Mainframes process more than 83% of transactions around the world. A supercomputer is the fastest, most powerful computer. Fastest supercomputer are capable of processing more than one quadrillion instructions in a single second. News organizations do two major things, commercially speaking: They use news to grab attention and then. Accessible electronically- must be accessible for those with disabilities. Rehabilition act of 1973- everyone, even people with disabilities, should be able to use the internet. Americans with disabiltiies act of 1990 (ada) federally funded programs. Web content accessibility guidelines (wcag)- the world wide web consortium (w3c) is an international community that develops open standards to ensure the long-term growth of the. Ada applies to the public sector whereas the rehabilitation act applies to federal and. Server side programming: php, java, c#, python, ruby.
