×

### Let's log you in.

or

Don't have a StudySoup account? Create one here!

×

or

## FSC 340- Week 4

by: Chelsey Smith

7

0

4

# FSC 340- Week 4 FSC 340

Chelsey Smith
USM
GPA 3.9

Get a free preview of these Notes, just enter your email below.

×
Unlock Preview

These notes cover finding sufficient recurve in loops and their rules along with typelines and deltas.
COURSE
Fingerprinting
PROF.
Dr. Dean Bertram
TYPE
Class Notes
PAGES
4
WORDS
CONCEPTS
forensics, Fingerprints, loops, Delta, typeline, SufficientRecurve
KARMA
25 ?

## Popular in Forensic Science

This 4 page Class Notes was uploaded by Chelsey Smith on Friday September 16, 2016. The Class Notes belongs to FSC 340 at University of Southern Mississippi taught by Dr. Dean Bertram in Fall 2016. Since its upload, it has received 7 views. For similar materials see Fingerprinting in Forensic Science at University of Southern Mississippi.

×

## Reviews for FSC 340- Week 4

×

×

### What is Karma?

#### You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 09/16/16
FSC 340- Fingerprinting September 13, 2016 Loops  FBI definition: type of pattern in which one or more ridges enter upon either side, recurve, touch or pass an imaginary line between delta and core and then pass out upon same side entered.  3 Basic Requirements for a loop o There must be a sufficient recurve o Only one delta o Must have at least 1 ridge count and the ridge count must cross at least one looping type ridge  Sufficient Recurve o Consists of the space between the shoulders of a loop, free of any appendages which abut it at a right angle outside of the recurve o The innermost sufficient recurve is needed o To check for this: place a ruler on the parallel lines and place a dot where each one begins to curve. S=shoulder- where the parallel lines turn inwards; G=good/sufficient recurve  Sufficient Recurve Rules o Shoulders of the loop are where the recurving ridges definitely turn inwards/curves o An appendage is an attachment of a connection o Appendages striking the outside of a recurve at a right angle will spoil the recurve, meaning there is no loop and the analyzer moves to the next innermost loop outside of the previously inspected non-loop. o To test for appendages:  If you can smoothly trace the appendage along the loop, it’s good  If there is a dot on top of the sufficient recurve in question, it’s still good (dot being defined as no taller than it is wide)  An appendage may form a new loop  Use a clear ruler for best results  Be sure to label S and G on each inspected loop FSC 340- Fingerprinting September 15, 2016 Typelines  Typelines- are the two innermost ridges which start or go parallel, diverge, and surround the pattern area  Typelines are used to help find deltas- they are generally found on the opposite side of ridge flow  There are not always two continuous ridges. When there is a definite break in a typeline, the ridge immediately outside of it is considered as a continuation (tends to surround pattern line)  Check for sufficient recurve first  Bifurcation- cannot be a typeline- resembles a Y  Divergence- Can stem from bifurcations to become typelines  The arms of the bifurcation on which the delta is located can never be used for typelines  Angles can never be used for typelines. They are formed by an abutting of one ridge against another Delta  That point on a ridge at or the nearest to the point of divergence of two typelines, and located at or directly in front of the point of divergence  A delta WILL be on a friction skin ridge  Where a delta can be placed o Dot o Bifurcation o Recurving of Ridges o Meeting of two Ridges o Short Ridge o Ending Ridge  Delta Rules o If you have more than one bifurcation, pick the one closest to the core (not at or in front of) o Bifurcation takes preference over any other choice (dot, recurving ridge, etc.) o Deltas may not be located in the middle of a ridge running between typelines towards the core, but at the end nearest to the core o A dot may be used as a delta- it has no direction o The delta may not be located at a bifurcation which does not open towards the core

×

×

### BOOM! Enjoy Your Free Notes!

×

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

## Why people love StudySoup

Bentley McCaw University of Florida

#### "I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Kyle Maynard Purdue

#### "When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the material...plus I made \$280 on my first study guide!"

Jim McGreen Ohio University

#### "Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Parker Thompson 500 Startups

#### "It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!
×

### Refund Policy

#### STUDYSOUP CANCELLATION POLICY

All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email support@studysoup.com

#### STUDYSOUP REFUND POLICY

StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here: support@studysoup.com

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to support@studysoup.com