P5: Crime Scence Detective

It was a late friday night after a heated tennis match. The victim ( Ms. Carulpoo) had just played in the Wilmington Battle of the Sexes tennis match against the imfamous Mike Kelly who haas never lost a game. But htat friday night would soon be the end of his undefeated legacy and the beginning of a vicous homicide evolving from the bitter revenge of a lost fame. Ms Carulpoo was found dead by her nieghbor Ms. Nosienews who saw she hadn't seen her or this mysterious male figure who enter the house late that night leave which lead to her snooping around. From her interview we were able to determine that the only 2 people in the house the victim and the mysterious man oh and her cat monkey face. Our forenaic scientist were able to find a number of clues including: a sample of O blood, fibers used in tennis rackets, a torn letter, white male hair, cat hair, and a shoe print. So the crime goes like this, Ms. Carulpoo had her friend Sam (the construtionist) come over to show her a good time explaing the shoe print which resembles that of a construction worker but what Mrs. Nosienews didnt see is him leaving the house @ 3 in the morning.Once Sam left Mike Kelly slips in the house pretending to be Sam. Then boom Mike grabs the tennis racket and beats Ms. Carulpoo's face to death. As he was cleaning up the scence the racket tore leaving particles behind explaining the the fibers. But what would shock us the most is that the O blood is not that of the vitcm seeing as Mike wipe all traces of her blood away. So I bet your wonder how did it get there then, well the cat Monkeyface came runnig in the room scaring Mike who cut his arm with the torn racket leaving his blood. Escaping without being seen suspect Kelly left what he thought would be the perfect crime of revenge but soon learned the heavy hand of the lam and forensic science!

P4: Blood Typing

The are four major types of blood. A, B, AB and O which are catergorized by the ABO system. The Rhesus system types them as negative or positive.

P3: Use and Techniques of Hair & Fiber Analysis

The Use
The lack of fingerprints lead to hair and fiber analysis being a forensic scientist greatest ally.The ablility of fibers and hair to fall loose and get snagged on objects make it that much easier to catch the criminal and solve the crime.Forensic scientic us the different formation and textures of hair to syle the difference froma white person's hair from an asian's. Different types of fibers can be catergorized into two group one being natural and and other being man-made. Natural fibers are fiber examplified as wool and cotton, while man-made fibers are more like polyester and nylon. By taking cross sections of fibers and putting it under a microscope making i capable determine what the fiber is and other important lagestics in crime solving.

Asian Hair: brown shaft, black medulla.

White Hair: Violet shaft. Yellowish and wider medulla.

P2: Inaccuracy & Techniques

Inaccuracy

Handwriting analysis is a proven and useful method in forensic science, but it still is not the most accurate form in the use of locating the criminal. The ability to create convincing forgeries have made people question the science of handwriting analysis and its use. Amongst a very precise science like Forensics, handwriting analysis can appear more speculative than other methods such as fingerprinting, hair and fiber analysis, and DNA analysis. There are multiple reasons of how it doesn't compare to the more valuable and less speculative forms of forensins such as imitation which is the copying of the a persons handwriting often done by a professional. Then there is the problem having to match the handwriting which means that there would have to be an example to compare to, moreover; requiring the example to be the person natural handwriting making that much more inaccurate.

Techniques

To make a goood analysis of the evidential handwriting forensic scientist using a seris of questions comparing the handwritting to one another. Some questions include How big are the letters? How close are they together? How much space is between words? ow hard does the writer press the pen/pencil to the paper? Is the writing in straight line? Does the writer tend to gravitate up or down? o the letters flow together or is each letter printed separetly? ow do the capital letters connect to the lowercase ones? o the individual letters slant one way or another?

P2: History Of Handwritting

Graphology is the study and analysis of handwriting especially in relation to human psychology. In the medical field, it can be used to refer to the study of handwriting as an aid in diagnosis and tracking of diseases of the brain and nervous system. The term is sometimes incorrectly used to refer to forensic document examination. Graphology has been a controversial field for more than a century. Although supporters point to the anecdotal evidence of thousands of positive testimonials as a reason to use it for personality evaluation, most empirical studies fail to show the validity claimed by its supporters.

P1: A Fingerprinting History

PrehistoricThe evidence proving mankind's interest in fingerprints can be dated back to the prehistoric period. Discovered in Nova Scotia was pictures of a hand with ridge patterns. To farther prove the interest in fingerprinting thumb prints from the ancient Chinese on clay seals. Furthermore in ancient Babylon, fingerprints were used on clay tablets for business transactions.

Early Discoveries

Marcello Malpighi found that there are ridges, spirals and loops in fingerprints. There was no referencing to using this tool as an personal identification tool. A layer of skin that is approximately 1.8mm thick was named after him called the "Malpighi". Later in the 1800's John Evangelist Purkinji published his thesis discussing 9 fingerprint patterns but still there was no concern of using the findings as an implement for idenification let alone a way to help in a criminal investigation.

Modern

In 1901, Henry was appointed Assistant Commissioner of Police at New Scotland Yard and began to introduce his fingerprint system into that institution. By the end of that year, the Fingerprint Office at New Scotland Yard was fully functional, the first British court conviction by fingerprints being obtained in 1902. Henry's book and classification system was being used by police forces and prison authorities throughout the English-speaking world.

http://www.aladdinusa.com/documentationservices/fingerhistory.htm

http://www.onin.com/fp/fphistory.html
http://www.policensw.com/info/fingerprints/finger02.html

P1: Types and Shapes of Fingerprints

There are three main fingerprint patterns: arches, loops and whorls. 5% of fingerprint patterns encounters are of the arch type. The four types of arch patterns consist of plain arches, radial arches, ulnar arches and tented arches. Then there are loops which occur in about 60-70 % of fingerprint patterns encountered. One or more of the ridges enters on either side of the impression, re-curves, touches or crosses the line running from the delta to the core and terminates on or in the direction of the side where the ridge or ridges entered.



When searching for fingerprints the three main types of fingerprints you will find are visible prints, latent prints and impressed prints. Visible prints or patent prints ar efound in some medium bloodlike subtances which reveals them to the naked eye. Latent which arent noticeable to unless powdered with chemicals are formed from the sweat from sebaceous glands on the body or water, salt, amino acids and oils contained in sweat. Impressed prints or plastic prints are indentations left in soft pliable surfaces, such as clay, wax, paint or another surface that will take the impression.

http://odec.ca/projects/2004/fren4j0/public_html/types_prints.htm