Re: Re:Re: [sdpd] Re: the XRD pattern in the ICDD logo

[peng gao <pg35...@njit.edu>]

Let's have fun.

I bet that it is a kind of mineral and collected at synchrotron light
source.

Best.

Peng Gao

On Fri, May 20, 2011 at 2:41 AM, Armel Le Bail <armel.le_bail...@univ-lemans.fr
> wrote:

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


[Non-text portions of this message have been removed]



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