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Posted on Saturday, March 03, 2001 - 11:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

At onin.com/fp, please right-click and download the "Ridgeology" publication. Page 38 answers your ACE question. There is also an explanation in paragraph 4 at this website.

The publication "Ridgeology" explains latent print examination and the philosophy of identification in easy to understand terms. It includes the "ACE" first explained in 1972 by Roy Huber, along with the "V" (verification) universally advocated among Latent Print Examiners.

The author of "Ridgeology", David Ashbaugh, was a witness in the first Daubert hearing challenging the validity of the science of fingerprint identification. "Ridgeology" is valuable reading for latent print examination students. From the long reference list at the end of the publication, you can see that David Ashbaugh reviewed and compiled knowledge from extensive research on the topic of friction ridge identification.

"Ridgeology" is not a term universally adopted among Latent Print Examiners, i.e., only a few Latent Print Examiners call themselves "Ridgeologists." This is partly because some persons in recent years have tried to paint an "us and them" (Latent Print Examiners vs. Ridgeologists), as if "Ridgeology" explains something that is not already done everyday by practicing Latent Print Examiners.

"Ridgeology" embodies a good description of the "non-numerical standard" philosophy of identification. In North America, numerical standards for friction ridge identification were abandoned by most agencies over 50 years ago. Numerical standards (i.e., the 12 point standard) disappeared from the FBI's publication "The Science of Fingerprints" in the 1940's. That book was and is a basic "primer" for budding fingerprint experts in the United States.

Some laymen (and even some Latent Print Examiners) erroneously think that "Ridgeology" is all about Poroscopy. It is not. Ashbaugh states in "Ridgeology":
"Studies by myself and others have found pore structure does not record accurately enough in inked or crime scene prints to facilitate this type of absolute comparison and evaluation."
Instead of being some revolutionary method of how to examine and compare latent prints, "Ridgeology" instead gives an understandable explanation of the real world procedure taught and practiced by professionals examining friction ridge impressions.

The basic tenets of the identification process explained in the publication "Ridgeology" are those universally practiced by Latent Print Examiners already. "Ridgeology" does a good job of putting into words the identification process.

Experienced Latent Print Examiners carefully reading "Ridgeology" may find themselves saying, "Well, Duh.... of course... that's how I've always done it."

In explaining "Ridgeology" to Latent Print Examiner students, I sometimes use the analogy of vestige patterns and new cars. There is a particular type of right-angle ridge formation which usually occurs near the thumbs on palms, called a vestige pattern. Once a Latent Print Examiner student has learned exactly what a vestige pattern is, he/she will see many more of them than they previously noticed.

It is similar to buying a new model of car. After you buy it, you will notice others of the exact same model even from a distance. They were always there, but your lack of knowledge about exactly what they looked like never attracted your attention before.

Knowledge of "Ridgeology" works in a similar way. It is not that Latent Print Examiners do not already see everything that is present in the friction ridge impressions they examine. It is more that "Ridgeology" gives them a new model for understanding and explaining what they are seeing.

--Ed German

P.S. We cannot do all of your homework for you at this website. For your blood preservation and fiber collection questions, please enter your search here.
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nadya salaita
Posted on Thursday, March 01, 2001 - 10:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

I am a student doing a report on Ridgeology. I was wondering if anyone could help me in why it is so important, ie: court case?

What are the three steps in ACE?

How do you preserve blood?

What are the firs steps you take in collecting fibers?

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