A few weeks ago I found myself in a room full of fellow transportation geeks (a term I use with great respect) at the annual American Association of State and Highway Transportation Officials (AASHTO) Washington Briefing. One panel in particular really got the room buzzing with talk about the transportation
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State leaders must take the wheel of transportation infrastructure reform
Planning for SAS use on solid state drives
SAS software benefits from the high performance of solid state drives (SSD), whether it is in the form of flash memory cards or hard-drive form-factor SSDs. The following general points should be considered when planning SSD storage for SAS usage:
The difference of density estimates: When does it make sense?
I was recently asked how to compute the difference between two density estimates in SAS. The person who asked the question sent me a link to a paper from The Review of Economics and Statistics that contains several examples of this technique (for example, see Figure 3 on p. 16