Identifying Trace Evidence Forensic Chemistry and Trace Evidence Analysis CJ 385 Professor Luckas July 15‚ 2012 Question 1 In order to identify that a white powder might contain cocaine‚ a forensic drug chemist can conduct a number of tests. The tests in order to identify cocaine are conducted based on the physical and chemical properties of cocaine. The physical and chemical properties of a substance make it unique‚ thus identifiable and distinguishable from other physical evidences
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http://projects.nfstc.org/trace/2009/index.htm Website is run by the National Forensic Science Technology Center. This website gives a brief description of what trace evidence is. It states “ Trace evidence is considered one of the most diverse of the forensic disciplines because it can include the analysis of paint‚ glass‚ hair‚ fibers‚ particulate matter‚ botanicals‚ explosives‚ and impression evidence‚ among others.” It goes on to state how the understanding of trace evidence can be crucial
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Trace evidence is based on Locard’s exchange principle which contends that every contact no matter how slight will leave a trace . The trace is normally caused by objects or substances contacting one another‚ and leaving a small sample on the contact surfaces. Foreign objects or pieces of material present at a crime scene and tracing its origin can assist in an arrest and conviction the same way finding some trace from the victim or crime scene on a suspect can have a strong impact on a case. Trace
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Adaptive Shape Contour Tracing Algorithm by Emad Attalla‚ Ph.D. ABSTRACT In this paper we are going to present a new shape contour tracing algorithm called ¡§Adaptive Contour Tracing Algorithm¡¨. The algorithm can trace open and closed discontinuous digital shapes and return an ordered set of boundary points that represent the contour of the shape. Unlike other algorithms that return boundary points that are part of the traced shape‚ our algorithm returns background points that are adjacent
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Chelsea Ferrell Lab 1 Closed-Loop Control According to our book‚ Motor Learning and Performance‚ a closed-loop control is a type of control that involves the use of feedback and the activity of error detection and correction processes to maintain the desired state; used by people to control slow‚ deliberate movements. The book uses a heating and cooling system to illustrate a closed-loop control‚ but a closed-loop control process is actually used for certain types of human performances. For our
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Exercise 7.1 ANSWERING THE OPPOSITION Answering the opposition EN1420 Jorge Angeles Answering the opposition What was your initial reaction to Limbaugh’s claim that‚ “feminism was established so that unattractive women could have easier access to the mainstream of society? My first reaction was that he went a little bit too far with that statement‚ I think unattractive women and attractive women could have or not have an easier access to the mainstream of society as
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LORENZO BROWN EN1420 exercise 3.1 Identify the Logical Fallacies 1. Mabel is not qualified to lead the school board because she used to drink liquor in her 20s. A. Ad Hominem; This is under Ad Hominem because the arguer is supporting her claim by pulling information from the her personal life instead of using the knowledge they know about the subject being a leader. 2. A child can be either an athlete or a good student. a. Either-or; this is under the Either-or category because the argument comes
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TRACE EVIDENCE AS AN IMPORTANT TOOL UNDER FORENSIC SCIENCE Introduction Edmond Locard‚ founder of the Institute of Criminalistics at the University of Lyon‚ France‚ developed what has become known as Locard’s Exchange Principle. This states that “every contact leaves a trace”‚ implying that a criminal will leave trace and take away trace evidence when at a crime scene. Trace evidence often refers to minute samples of a substance‚ particularly fibres‚ hairs‚ glass fragments and paint chips. Crime
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Trace or transfer evidence can be any small‚ and to the untrained be a seemingly insignificant piece of material‚ whether man-made or natural‚ that has been left at a crime scene. Edmond Locard‚ founder of the Institute of Criminalistics at the University of Lyon‚ France‚ developed what has become known as Locard’s Exchange Principle. This states that every contact leaves a trace (Trace Evidence). Trace evidence can consist of just about anything. Some types of trace evidence include but are not
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Trace Evidence Trace evidence is an important part of a team in solving crimes in forensic investigations. According to Edmond Locard‚ there is specific that no matter wherever people interact with their environment or is physically involved in a crime often leaves something at or something away from the scene. Those in this category of evidence include many diverse types of macroscopic or microscopic materials that certain examples are easily visible to our “naked eye”. The subject is broad and
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