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Why the math question?
 
You are here: Usage › Overview › By Calendar Year

Usage: Overview

Table 1: User statistics
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
26,769 26,255 34% 33% 24% 9% 6,508 58% 4% 2% 36%
- Simulation Users 5
2,577 2,577 65% 14% 15% 6% 2,577 94% 3% 0% 3%
- Interactive Users 6
9,351 9,287 51% 22% 19% 9% 2,921 96% 3% 1% 0%
- Download Users 7
25,138 25,027 35% 32% 24% 9% 5,174 95% 3% 2% 0%
Total Users (old defn) 8
11,948 - - - - - - - - - -
Table 2: Simulation Usage
Simulation Users 5 2,577 users
Simulation Runs 69,276 jobs
Total CPU Time 264 days  
Total Wall Time 3,781 days  
Total Interaction Time 1,325 days  
Users with > 10 mins of CPU Time 403 users  
Avg. Number of Simulation Runs/User 27 jobs  
Avg. Time between First and last Simualtion 207 days  
Repeat Users with > 10 Simulation Jobs 1,214 users  
Repeat Users with > 3 Months 9 832 users  
Table 3: Miscellaneous Statistics
Domains Served 5,082
Cummulative Interactive User Sessions 10 25,278
Cummulative Session Time 1,601 days
Visitors 11 59,772
Visits 12 168,368
New Accounts 1,758
Max User Logins 465 users on 2010-02-09
Web Server Hits 12,317,146
Table 4: "and more" Usage
Type Users
Interactive Download
No data found.
Table 5: Collaboration Usage
Online Meetings 43 meeting sessions
93 participants
Shared Tool Sessions 13 21
New tools under development 8
Table 6: User statistics by registered/unregistered
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
26,769 26,255 34% 33% 24% 9% 6,508 58% 4% 2% 36%
- Registered Users 2
3,565 3,170 63% 18% 13% 6% 3,158 21% 4% 1% 75%
- Unregistered Interactive Users 3
4,367 4,337 38% 28% 25% 9% 694 95% 3% 2% 0%
- Unregistered Download Users 4
18,837 18,748 28% 37% 26% 9% 2,656 93% 4% 3% 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. -
  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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