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Midterm study guide
FOR404-S12
12
Science
Undergraduate 3
03/08/2012

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Term

 

 

 

The case jacket includes:

Definition
  1. Records of all administrative documents pertaining to a case.
  2. All documentation of evidence.
  3. All data generated
  4. Meetings 
  5. Phone calls
  6. Crime scenes
  7. Chain of custody
Term

 

 

 

Adminstrative documets include:

Definition
  1. Requests for examination
  2. Evidence intake
  3. Chain of custody
  4. Any supplemental material
  5. Any police reports
  6. Any court orders
  7. Phone logs
  8. Meeting logs
Term

 

 

 

Crime scene reports include:

Definition
  1. Date, time, and location
  2. Individuals present (CSIs, detectives, etc.)
  3. What is done, by whom, and when
  4. Location of evidence
  5. Collection of evidence
  6. Disposition of evidence
  7. Sketches
  8. Photos and photo logs
Term

 

 

 

 

Documentation of evidence includes:

Definition
 
  1. Worksheets
  2. Sketches
  3. Photographs
  4. Disposition of evidence
Term

 

 

 

 

Worksheets:

Definition
  1. Bench notes
    • record the appearance & condition of evidence
      • stains/damage/etc, smell, measurements
    • include everything you do
      • tests, results, match (or not)
  2. Should be in ink.
  3. Initialed. 
  4. Case identifiers. 
Term

 

 

 

 

Documentation:

Definition
  1. Every step must be documented:
    • supplement with photos
    • diagrams
  2. Screening tests:
    • ID chemicals
    • Batches and expiration dates
    • mark location of screenign tests with initials
  3. Cuttings must be marked
  4. Create sub-items:
    • chain of custody
Term

 

 

 

Analysis:

Definition
  1. Instrumentation:
    • Name
    • Method
    • Control samples
    • Validation standards
    • Any preparation
  2. Chemical testing:
    • Controls
    • Batches
    • Expiration dates

Was any evidence consumed???

Term

 

 

 

 

All written reports should contain:

Definition
  1. Name of the examiner who conducted the tests
  2. Agency where the examiner works
  3. The date the report was issued
  4. Case ID information
  5. Examiner's contact information
  6. Items examined
  7. Methods/instrumentation used to examine and analyze any submitted items
  8. A statement of the disposition of the evidence
  9. Signatures of the examiner and any reviewers of the report
Term

 

 

 

 

When writing the report:

 

Definition
  1. Keep it simple and concise
  2. List ALL items of evidence
  3. List ALL inclusions and exclusions
    • often clearer to list inclusions and then exclusions
Term

 

 

 

 

Construction Examinations:

Definition
  1. Ascertain how an item is made
    • identify various methods of construction
  2. May involve determining what an item is made of
  3. Indicate a common source between 2 items
  4. Can help determine if an item should undergo further testing
  5. Good screening test
  6. Process of determining construction depends on the item itself.
Term

 

 

 

 

Ropes and Cordage:

Definition
  1. Two categories:
    1. Twisted
      • Usually consists of 3 strands
      • Strands are made from twisted yarns
      • Strands may be right-laid (Z) or left-laid (S)
    2. Braided
      • Interweaving of 3+ strands
      • Diagonal overlapping pattern
      • Variety of patterns
        • Solid braid
        • Diamond braid (with or without core)
        • Twisted braid
  2. Forensic examination:
    • General microscopic examination regarding the general condition (wear, cuts, broken/frayed ends, etc.)
    • Preserve the ends and any knots that appear along the length
  3. Construction Characteristics:
    • Diameter
    • Staple or filament fibers
    • Twisted, braided, or non-twisted
    • Lay (Z or S)
    • Length of lay
    • Number of piles or brainds
    • Twist of each ply or braid
    • Crowns or turns per inch
Term

 

 

 

 

Pressure Sensitive Tapes:

Definition
  1. What is pressure sensitive tape?
    • consists of a pressure sensitive adhesive coated onto a backing material.
    • Stick with the application of pressure without the need for solven, heat, or water for activation.
  2. Types of tape:
    • Transparent
      • Office
    • Gaffer
      • holds down cables, etc.
    • Duct
      1. Polyethylene film and woven fabrick backing.
      2. Thich layer of pressure sensitive adhesive on the fabric side.
      3. Film can be laminated to fabrick or extruded onto the fabric
    • Packing
    • Masking
    • Strapping
    • Electrical
    • Surgical
    • Double-sided
    • Adhesive transfer
      • no backing
    • Hockey
    • Spike
      • marking on stage
  3. Forensic Examination:
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