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...ools <- ols(eco$exp ~ eco$age + eco$own + eco$inc + inc2, x=TRUE) I have tried several other combinations of arguments that take TRUE/ FALSE values, but no luck. Ultimately, I am trying to calculate robust standard errors. Any help would be appreciated. Charles Evans Executive Director Free Curricula Center [[alternative HTML version deleted]]

...ing on based on the documentation. I tried to trace into the C code (which calls functions from the TRE regexp library) but that didn't help much ... Daniel Dickison Research Programmer ddickison at carnegielearning.com Toll Free: (888) 851-7094 x103 FAX: (412) 690-2444 Revolutionary Math Curricula. Revolutionary Results. Carnegie Learning, Inc. | 437 Grant St. 20th Floor | Pittsburgh, PA 15219 www.carnegielearning.com

All, I've a question on A*k hardware. I'm running 1.2.18 on a Dell DC051 (Intel(R) Celeron(R) CPU 2.80GHz) with 512mb RAM. I'm supporting 60 users (Cisco 7940s each + Xlite PCs). Call loads are low, max of about 10 simultaneous SIP/IAX calls. CPU for A*k rarely goes above 2% as I can tell. Its IP only, no E1/T1 cards present. However, I get complaints of bad voice quality,

...attached base packages: [1] stats graphics grDevices utils datasets methods base loaded via a namespace (and not attached): [1] tools_2.12.0 Daniel Dickison Research Programmer ddickison at carnegielearning.com Toll Free: (888) 851-7094 x103 FAX: (412) 690-2444 Revolutionary Math Curricula. Revolutionary Results. Carnegie Learning, Inc. | 437 Grant St. 20th Floor | Pittsburgh, PA 15219 www.carnegielearning.com