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Usage: Overview

Table 1: User statistics
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
156 133 41% 32% 14% 14% 30 97% 3% 0% 0%
- Simulation Users 5
0 0 0% 0% 0% 0% 0 0% 0% 0% 0%
- Interactive Users 6
65 62 29% 23% 6% 42% 3 100% 0% 0% 0%
- Download Users 7
126 122 40% 25% 11% 24% 2 100% 0% 0% 0%
Table 2: Simulation Usage
Simulation Users 5 0 users
Table 3: Miscellaneous Statistics
Domains Served 238
Cummulative Interactive User Sessions 10 273
Cummulative Session Time 83 days
Visitors 11 751
Visits 12 1,917
New Accounts 3
Max User Logins 5 users on 2012-04-11
Web Server Hits 141,676
Table 4: User statistics by registered/unregistered
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
156 133 41% 32% 14% 14% 30 97% 3% 0% 0%
- Registered Users 2
23 6 83% 0% 0% 17% 22 95% 5% 0% 0%
- Unregistered Interactive Users 3
27 25 32% 52% 16% 0% 3 100% 0% 0% 0%
- Unregistered Download Users 4
106 102 40% 28% 14% 18% 5 100% 0% 0% 0%
  1. Sum of Registered Users2, Unregistered Interactive Users3 and Unregistered Download Users4
  2. Number of Users that logged in. User registration assigns a unique login to each individual user.
  3. Number of Unregistered Users, identified by unique hosts/IPs, that had an active Session 10 without logging in. Does not include known web bots/crawlers.
  4. Number of Unregistered users, identified by unique hosts/IPs, that had an active session of less than 15 minutes without logging in and downloaded a non-interactive resource such as PDF or podcast. Does not include web bots/crawlers.
  5. Number of Registered Users2 that ran one or more simulation runs.
  6. All Unregistered Users, identified by unique hosts/IPs, that had an active Session 10. Does not include known web bots/crawlers.
  7. All Unregistered users, identified by unique hosts/IPs that downloaded a non-interactive resource such as PDF or podcast. Does not include known web bots/crawlers.
  8. Sum of Simulation Users 5 + Unregistered Interactive Users 3 including web bots/crawlers.
  9. Number of Simulation users that returned after a gap of 3 months.
  10. Begins when an IP is active on the site for at least 15 minutes. Ends when inactive for more than 30 minutes, including time spent viewing videos.
  11. Identified by a unique IP address / hostname.
  12. Based on MIT OCW metric of Visits: A visit is activity by a unique visitor delimitated by a 30 minute absence from the site on either side of the activity.
    These visits correspond to unique visitors 11. Does not include known web bots/crawlers
  13. Number of Simulation sessions that were shared between 2 or more users.