Dear Justin:<br><br>Thank you so much for your quick response. <br><br>But I still don't get it. Should I calculate the standard error manually by using the equations A17 (in B. Hess' s paper) after I get the result by g_analyze. And then which value I should use for the sigma?<br>
<br>Here is the output :<br><br>invalid fit: e.e. 15.6513 a 2.17585 tau1 28.9321 tau2 46.3966<br>Will use a single exponential fit for set 1<br>Set 1: err.est. 21.0339 a 1 tau1 15.1648 tau2 0<br><br>I really appreciate your patience and help!<br>
<br><br><br><div class="gmail_quote">On Fri, Nov 20, 2009 at 3:07 PM, Justin A. Lemkul <span dir="ltr"><<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>></span> wrote:<br>
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Yanmei Song wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Dear Justin:<br>
<br>
I really appreciate your response and help!<br>
<br>
I am confusing about the result by using this method. I found in B. Hess's paper (Appendix, JCP, 116, 2002) that " this gives a standard error estimate for 1/eta of 29.5. "; and the error he gives for that eta is 0.006. I thought the error should be calculated as 1/29.5=0.034. Thank you again for your help!<br>
<br>
</blockquote>
<br></div>
The relationship is not a simple inversion as you've shown it. That is, (standard error of 1/eta) != 1/(standard error of eta). The standard error calculation depends on a number of factors, hence all the math in the Appendix :) An example is given in Fig. 8 of that paper.<br>
<font color="#888888">
<br>
-Justin</font><div><div></div><div><br>
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<br>
Justin A. Lemkul<br>
Ph.D. Candidate<br>
ICTAS Doctoral Scholar<br>
Department of Biochemistry<br>
Virginia Tech<br>
Blacksburg, VA<br>
jalemkul[at]<a href="http://vt.edu" target="_blank">vt.edu</a> | (540) 231-9080<br>
<a href="http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin" target="_blank">http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin</a><br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Yanmei Song<br>Ph.D. Candidate<br>Department of Chemical Engineering<br>Arizona State University<br>