CRIM 355 Chapter : Crim 355 Text Notes.docx

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blueseal520

14 Apr 2012

School

Simon Fraser University

Department

Criminology

Course

CRIM 355

Professor

Jodie- Ann Warren

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Document Summary

Examples: paint (b&e"s, glass, fibers, drywall, glue, cleaner fluid, adhesive tape (assault where people are bound) Basic training in lab under a mentor (15 months) Not useful without a comparison database to determine probability of someone else have that evidence. Example :glass at a scene: how common is that sort of glass. Glass on regular people: mall study, how much class on them, on shoes ~30, clothes ~ 2% Does it fit this person-how likely is it this person could innocently have this evidence. Glass on clothing is rare, but what if the guy is a glazer. Some things are very common in some situations and very rare in others. More than one type of class evidence. The more there is the more significant multiple probabilities. Polymers- eg. nylon (large number of atoms) Characteristics: color, striations on fibre, cross-sectional shape, refractive index. Cars- all have atleast 4 layers normally (could have as many as 7)

Related Questions

Suppose that you are investigating a routine break-and-enter scene. It appears that a suspect broke a window to gain entry to the house and subsequently let others in through the front door. The following evidence was found.

1)Glass fragments from the broken window

2)Dried blood found on the window sill

3)Hairs found within the home

4)Fibres found caught on the door frame of the house

Using point form describe the collection procedure for each piece of evidence listed above. In addition, where appropriate, you should state whether the evidence would exhibit class or individual characteristics and indicate which department of the Center of Forensic Sciences you would send the evidence to for analysis.

Finally, which of the evidence pieces would require control/reference samples? Explain your reasoning for requesting control/reference samples and how they would be collected.

Hello, need a little help with this DQ!

There has been a lot of hype regarding the subjectivity of various forensic sciences disciplines, such as, latent print examinations and firearm examinations. To prove that these disciplines are a scientifically sound, thereâs a need for research, application of error rates, etc. This hype or debate was determined during a national examination of all forensic disciplines the National Academy of Sciences (NAS) report.

Discussion:

Are question document examinations purely subjective (influenced by person opinions)?

Now that you have performed analysis as a question document examiner (week 2 and week 3 assignments), do you believe that question document examinations are scientifically sound?

As an expert in question document examinations, would you feel confident testifying to your conclusions/opinions based on the analysis you performed in this course?

As a juror, what type of information would you want to be provided in court to prove that question document examinations are scientifically sound?

The National Academy of Sciences finalized a report on the current Forensic Science Practices in the United States in 2009.

Evidence Technology Magazine

http://www.evidencemagazine.com/index.php?option=com_content&task=view&id=140

Summary from an Attorney

http://www.thetruthaboutforensicscience.com/a-quick-summary-of-the-national-academy-of-sciences-report-on-forensic-sciene/

All the biodiversity that exists on the planet strated from a single cell. How do you explain/support this statemnet? Use at least two examples from eahc of the following types of evidence: Comparitive molecular biology (DNA/Protien, chemistry, cellular organization, metabolism, biogeographic distrubution of simple to complex organisms and any other evidence that helps support your answer. (Hint: compare common features/structures, metabolic pathways, molecules).

CRIM 355 Chapter : Crim 355 Text Notes.docx

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