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Re: Re:Re: [sdpd] Re: the XRD pattern in the ICDD logo
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<p>Hi,<br>
<br>
On my side, I started the "too simple" approach.<br>
No success yet after two ICDD staff members contacted.<br>
<br>
Best,<br>
<br>
Armel<br>
<br>
At 02:33 20/05/2011, you wrote:<br>
><br>
><br>
>Hi,<br>
><br>
>i have got a less brute idea, which may reduce <br>
>the complexity of searching process to a factor of N^2 !<br>
><br>
>The assumptions are still the same:<br>
>1. Pattern in the logo was transformed linearly and uniformly.<br>
>2. The pattern was from a single phase.<br>
>3. The pattern is not an unknown pattern for the searched pdf database.<br>
>**in the case that one of these assumptions <br>
>breaks, all the stuff we discussed now would be unfortunately senseless :-(<br>
><br>
>The new criterion of success is quite simple. By <br>
>observing the 5 strongest peaks<br>
><br>
>0.076 79.67<br>
>0.127 50.41<br>
>0.348 100.00<br>
>0.358 44.72<br>
>0.606 48.78<br>
><br>
>We normalize the angle spacing with the distance <br>
>between the strongest and the second strongest <br>
>peak, the peak coordinates of the X column would <br>
>be -1, -0.81, 0, 0.037, 0.95. Using this new <br>
>normalized-pattern criterion, after searching <br>
>the database only one round, hopefully answer, <br>
>positive or negative, would be disclosed in the next post. Let's wait and see.<br>
><br>
>Faithfully<br>
>Jun Lu (postdoctor)<br>
>----------<br>
>Group of YiCheng Wu in Center of Crystal Growth<br>
>Technical Institute of Physics and Chemistry<br>
>Chinese Academy of Sciences<br>
>100190 Beijing, P.R. China<br>
><<a href="http://www.instrument.com.cn/ilog/handsomeland/";>http://www.instrument.com.cn/ilog/handsomeland/</a>><a href="http://www.instrument.com.cn/ilog/handsomeland/";>http://www.instrument.com.cn/ilog/handsomeland/</a><br>
>----- Original Message -----<br>
><br>
>From: Armel Le Bail<br>
>To: <mailto:sdpd%40yahoogroups.com><a href="mailto:sdpd%40yahoogroups.com";>sdpd...@yahoogroups.com</a><br>
>Sent: Wednesday, May 18, 2011 10:18 PM<br>
>Subject: Re:Re: [sdpd] Re: the XRD pattern in the ICDD logo<br>
><br>
> >Maybe you can E-Mail ICDD to get the answer. The best way? :-)<br>
><br>
>Too simple...<br>
><br>
>Armel<br>
><br>
>[Non-text portions of this message have been removed]<br>
><br>
><br>
<br>
[Non-text portions of this message have been removed]<br>
<br>
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