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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
67 55 60% 16% 18% 5% 8 63% 13% 25% 0%
- Simulation Users 5
5 0 0% 0% 0% 0% 0 0% 0% 0% 0%
- Interactive Users 6
37 35 69% 11% 17% 3% 1 100% 0% 0% 0%
- Download Users 7
29 28 61% 18% 14% 7% 0 0% 0% 0% 0%
Table 2: Simulation Usage
Simulation Users 5 5 users
Simulation Runs 18 jobs
Total CPU Time 4 days  
Total Wall Time 21 days  
Total Interaction Time 4 days  
Users with > 10 mins of CPU Time 3 users  
Avg. Number of Simulation Runs/User 4 jobs  
Avg. Time between First and Last Simulation 441,060 days  
Repeat Users with > 10 Simulation Jobs 0 users  
Repeat Users with > 3 Months 9 1 users  
Table 3: Miscellaneous Statistics
Domains Served 261
Cummulative Interactive User Sessions 10 105
Cummulative Session Time 78 days
Visitors 11 700
Visits 12 1,398
New Accounts 2
Max User Logins 7 users on 2012-04-24
Web Server Hits 118,556
Table 4: User statistics by registered/unregistered
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
67 55 60% 16% 18% 5% 8 63% 13% 25% 0%
- Registered Users 2
12 2 100% 0% 0% 0% 3 100% 0% 0% 0%
- Unregistered Interactive Users 3
27 26 58% 15% 23% 4% 5 40% 20% 40% 0%
- Unregistered Download Users 4
28 27 59% 19% 15% 7% 0 0% 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.

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