...Blood Stain Pattern Analysis: Blood stain pattern analysis is a form of forensic science that examines blood at crime scenes. From analyzing blood at the crime scene analysts can determine many different things about the crime scene. Some of which include: Where the blood came from What caused the wounds? From what direction was the victim wounded? How were the victim(s) and perpetrator(s) positioned? What movements were made after the bloodshed? How many potential perpetrators were present? Does the bloodstain evidence support or refute witness statements? Because blood behaves according to certain scientific principles, trained bloodstain pattern analysts can examine the blood evidence left behind and draw conclusions as to how the blood may have been shed. From what may appear to be a random distribution of bloodstains at a crime scene, analysts can categorize the stains by gathering information from spatter patterns, transfers, voids and other marks that assist investigators in recreating the sequence of events that occurred after bloodshed. This form of physical evidence requires the analyst to recognize and interpret patterns to determine how those patterns were created. Analysts must obtain a four year degree in forensic science or a Bachelor of Science degree before becoming an analyst. Often elastic string is stretched from blood droplets on the angle that of impact to determine where the blood originated from. Blood splatter can tell the police...
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...Valeria garza Pd . 7 Teacher: mr. vanni Date: may/13th/2016 Behind The chemistry of forensics Forensics means to work in investigating a scene of a crime to study how a deceased person died ,or how they were murdered or to see if it was a homicide, suicide, manslaughter or , so they can find traces for leads on who or what committed a crime. Any little detail can have traces of blood ,or even fingerprints if any evidence is found, it would be sent to a lab to be tested on to find results of what clues they find to try and find a lead. There are tools ,and chemicals that are used in a lab to help them find leads in an investigation. They also have Chem labs to identify drugs or other substances. The main job for...
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...1)Introduction; Crime today is at an extreme high. However, forensic science has been there to help solve every crime committed Forensic science is the scientific method of gathering and examining information about the past. The word forensic comes from the Latin forēnsis, meaning "of or before the forum. The word forensic basically means the key to solve a crime.This is the technology used to help forensic teams to analyze and solve crimes.- This is especially important in law enforcement where forensics is done in relation to criminal or civil law,[1] but forensics are also carried out in other fields, such as astronomy, archaeology, biology and geology to investigate ancient times. Forensic Science is used to Identify Criminals Rape, murder, theft, and other crimes almost always leave a devastating mark on the victim. . In modern forensic science, the crime laboratories include photography section, Evidence storage section, identification section, chemistry section, General examination section, Fire arms section, instrument section and crime scene search section. 2)Origins of forensic science: In 16th-century Europe, medical practitioners in army and university settings began to gather information on the cause and manner of death. Ambroise Paré, a French army surgeon, systematically studied the effects of violent death on internal organs.[9][10] Two Italian surgeons, Fortunato Fidelis and Paolo Zacchia, laid the foundation...
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...Running Head: Blood Splatter Analysis Blood Spatter Analysis Kenisha Callahan AJS 592 Dr. Steven Gilbert Blood Spatter Analysis Blood spatter analysis is “the systematic assessment of the visual patterns of bloodstains at crime scenes based on the physics of fluids” (Brodbeck, 2012, p. 51). It has been studied since 1895 when Dr. Eduard Piotrowski published "Concerning the Origin, Shape, Direction and Distribution of the Bloodstains Following Head Wounds Caused by Blows." The next acknowledgment of BPA was in 1955 when Dr. Paul Kirk entered blood splatter evidence in the State of Ohio v. Samuel Sheppard case. Dr. Herbert MacDonell started training personnel of law enforcement about blood spatter analysis in 1971. Since that time, bloodstain pattern analysis has grown and continues to develop. Blood pattern analysis is used in a lot of crime scene investigations and can hold valuable information. Blood spatters can indicate important clues such as, the number of blows to the victim, the force of the blows, weapon used, and position and/or movement of the victim and suspect. Blood spatter can be classified into three categories, low velocity, medium velocity, and high velocity (Saferstein, 2011). Low velocity spatter consists of large separate or compound drops with diameters measuring three millimeters or more. It is usually the result of dripping blood. Medium velocity...
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...solve cases that can only be explained or resolved by applying analytical methods of investigation and instrumentation with chemistry as the main core of discussion. Forensic chemistry is a broad and diversified field of science. It includes all branches of chemistry and the application of its principles to solve crimes when it arise in the administration of justice. Significantly, Forensic chemistry is vital in crime detection when the components or chemical composition, structure of physical evidence/s collected from the scene of the crime are needed to support in the speedy solution of crime. Application of forensic chemistry is legally applied to the following: 1. Primarily, Forensic Chemistry deals in the recognition, identification, preservation, packaging & transportation of physical evidence collected at the crime scene. 2. In crime detection, it is applied in the identification of poisons, blood, semen, feces, urine, saliva, and other body fluids whether fresh or dried. It also include other stains of interests from ob-gynecological origin, mineral stains, fruits and/or vegetable stains. 3. It is involved in determining the kind of ink used in signature writings, and the kind of paper of a questioned document. 4. The knowledge of properties of volatile substance like organic solvents (alcohol, acetone, etc), accelerants (gasoline, kerosene, oils), and miscible materials such as textile fibers from clothing, are applied in forensic analyses of arson cases. 5...
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...Blood Spatter Pattern Analysis Kimberley Kanuch-Brown Everest University Abstract Given that blood spatter analysis is an emergent field, with rapidly occurring developments have significant probative implications for the court system, this project will seek to examine the multi-faceted elements of blood spatter analysis to provide an overview of the field’s different dimensions. Focusing on technical developments, analytical interpretation and court relevance, the project will propose that blood spatter’s analysis as a mainstream element of the CSI toolkit results from the combination of physical sciences and analytical rigor which lies at its core. Beginning with questions of technical and physical science, the project will examine the manner in which blood spatter analysis is increasingly capable of understanding how human usage of different weapons impacts the static nature of a given crime scene. Moving to questions of interpretation, the project will touch upon the manner in which information technology is improving the rigor and caliber of analysis, and thus leading to greater continuity and replicability in blood spatter analysis. Concluding, it will examine the manner in which the court system is now viewing blood spatter analysis with greater heft because of these developments. Blood Spatter Analysis and Science Beginning with questions of science, the work of Randall (2009) demonstrates how even the most esoteric of weapons can be analyzed using blood-spatter...
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...CRJ 311 Entire Course (Ash) FOR MORE CLASSES VISIT www.crj311nerd.com CRJ 311 Week 1 Assignment The CSI Effect CRJ 311 Week 1 DQ 1 Peer Review CRJ 311 Week 1 DQ 2 Your First Scene CRJ 311 Week 1 Journal You're an Expert! CRJ 311 Week 2 Assignment Conducting Your Own Field Sobriety Test CRJ 311 Week 2 DQ 1 Drugs and Scheduling CRJ 311 Week 2 DQ 2 Field Sobriety Tests CRJ 311 Week 2 Journal SANE or Not CRJ 311 Week 3 Assignment Case Study Analysis The Enrique Camarena Case CRJ 311 Week 3 DQ 1 Hair Evidence CRJ 311 Week 3 DQ 2 Arson Dogs CRJ 311 Week 3 Journal Professional Painter CRJ 311 Week 4 Assignment What's Your Impression CRJ 311 Week 4 DQ 1 Bite Mark Evidence CRJ 311 Week 4 DQ 2 Fingerprint Evidence CRJ 311 Week 4 Journal Cold Case Investigation CRJ 311 Week 5 DQ 1 Blood Patterns CRJ 311 Week 5 DQ 2 DNA Evidence CRJ 311 Week 5 Final Paper CRJ 311 Week 5 Journal Cold Case Investigation ======================================================== CRJ 311 Week 1 Assignment The CSI Effect (Ash) FOR MORE CLASSES VISIT www.crj311nerd.com Read “Fact or Fiction?; The Jury is Still Out on the CSI Effect; A TV-Insprired Interest in Forensics Has Left the Courtroom Vulnerable to Junk Science,” which is located in the ProQuest database in the Ashford Online Library. What is the CSI Effect, and do you believe it is a legitimate concern? In your paper, address the following: Summarize the CSI Effect and evaluate if it is a legitimate concern. ...
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...chosen Case study 1 to be discussed. By applying the knowledge gained throughout the syllabus and proper research, I have met the requirements of the paper. Based on contemporary justice in crime, the paper has been prepared. First, the brief description of the crime is outlined by summarizing the whole issue centered in the case study. Secondly, I have focused on description of the processes in the adult American criminal justice system the offender would go through, starting with arrest. Further, I have highlighted the weakest and strongest links in the criminal justice process. 2. A brief description of the crime Based on reading of the Case study 1, it is revealed that there are two murders happened....
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...the justice system. Forensic scientists use scientific techniques and knowledge to assist law enforcement in investigations and solving crimes. They collect and analyze numerous types of evidence, including blood, body fluids; DNA; and human tissue. Forensic scientists assist the decision makers by showing the prosecutor if the issue has merit before it reaches the courtroom thereby reducing the number of cases having to be heard. Their decisions are based on scientific investigations and not circumstantial evidence or unreliable witnesses. Forensic scientists can restore faith in the judicial system with the use of science and technology for facts in criminal and civil investigations. The legal system is established on the belief that the legal process results in justice for all. History of forensic science The history of Forensic science or the applying of scientific principles to legal questions has a lengthy and interesting history. The first recorded autopsy was reported in 44 B.C was on Julius Caesar, where the Roman physician, Antistius proclaimed that he had 23 wounds on his body but only one was fatal. In 1248, a Chinese book entitled “His Duan Yu” (meaning The Washing Away of Wrongs) explaining how to tell apart a drowning from a strangulation. This was also the first recorded use of medicine to assist in solving crimes. In 1590, the first microscope was developed. In 1775, Karl Wilhelm Scheele first discovered forensic detection of arsenic when he noticed...
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...Insects are very location specific, and if insects are found on or within the remains that are not specific to that location, it can provide detail as to the place of death. Entomology can determine if a body has been moved or disturbed. This information can be critical to solving a crime. Bloodstain Pattern Analysis can be helpful in the determination of a crime scene provided that there is bloodstain present. It can determine whether something or somebody has been moved, and it can tell whether a crime scene has been contaminated through swipe patterns, and blood transfers. It can provide the direction of travel that the victim, or perpetrator moved, and offer a relative rate of speed. A perfect example of BPA offering information about the location is Sergeant Diane Cockle’s 2012 Kelowna Keith WIENS homicide case in which Cockle says, “ A retired mountie who killed his wife and staged the scene - BPA evidence was critical for the...
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...A Study in Scarlet and Pink A successful adaption of a text does not have to follow the text exactly as written. There is an importance to maintaining the main concepts and characters in the story, such as in the mystery, A Study in Scarlet by Conan Doyle. The main characters, Dr. John Watson and Sherlock Holmes should be portrayed correctly; the type of crime, and the search for the criminal should remain the same. There is a higher importance for an adaption to have more excitement and interesting twist, makes a more successful mystery than the original text. Any movie or show should have the effect of people having a connection. The effects have being so embedded to the film that the audience feels a part of the mystery. In movies and shows, there are basic needs for a good director, good actors or actresses, and a good setting like any other normal movie to make a successful adaption. In the short story, A Study in Scarlet by Sir Conan Doyle, the mystery has almost linear storyline with an episode of flashback. The story is in first narrative person, through the eyes of Dr. Watson. It first talks about Dr. John Watson in Afghanistan war as an army doctor. He gets shot in the shoulder. He is discharged from the war efforts, returning to London. In London, he meets his friend Stamford who shows him to his acquaintance, Sherlock Holmes. They then become roommates and solve mysteries together. For the first mystery, they receive details of an unsolved murder of Mr. Enoch...
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...as the application of science to the law. There are different types of forensic science, and each plays an integral part in the criminal justice system. Forensic biology usually involved DNA testing and its results. Forensic anthropologists examine human remains that have become skeletons in an attempt to determine how long the remains have been in a location and to try to determine a possible cause of death. Forensic toxicology falls into the category of forensic chemistry. Forensic toxicologists study toxins, drugs, poisons, alcohol, and other things found in the blood or tissues of crime victims or perpetrators. Forensic toxicologists study the blood and tissues of living people as well as deceased persons. The rapid advancement of technology in the last century and, in particular, the last three decades, has helped forensic scientists solve many crimes, even those that had been cold for decades. Technology is quickly changing and improving the methods by which crimes can be solved. The first evidence of scientific methods being used to identify people occurred in China in 700BC. Chinese artists used fingerprints to identify pieces of art they had produced. Of course, there was not computerized system to file or categorize these fingerprints. However, this is the first known instance of fingerprints being used for identification purposes. Clearly, things have dramatically changed since that time in terms of using forensics to improve the efficiency of the criminal...
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...But prosecutors and investigators brought in a Blood Pattern Expert named Samantha Warna. Warna testified that the pattern of blood that was found on David Hill’s clothing and shoes could only have been put there in that way if he was the one that murdered Molly Wright. David Hill was convicted and sentenced to life in prison. Samantha Warnas testimony about the pattern of blood on David Hill’s clothing was the biggest piece of evidence that the prosecution had in this case. They did not have a murder weapon, although they knew it was a heavy object, and they had no witnesses. But thanks to the blood that was left on David Hills clothing, they were able to find the murderer. Samantha Warna claimed that David Hill’s account of what happened could not have been possible given the pattern of blood found on him. She also said that the only way the blood could have...
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... The United States is still one of the countries that still use the death penalty as punishment for crimes. While some see it as barbaric and totally against American values, others view it as an important deterrent to violent crimes- such as murder. Regardless of which side you are on, one thing is for sure- the debate isn’t going anywhere anytime soon. Capital punishment, another name for the death penalty, has been present in the United States since 1608. This is the process by which a person a person is tried and put to death for crimes they have committed. The list of crimes that are punishable by death vary from state to state (the U.S. government and the U.S. military have their own criteria), as well as the methods used for execution. Lethal injection is the standard for execution, but there are several other methods used, including: electrocution, hanging, and death by firing squad. Although every state does not employ the death penalty- a vast majority do. Along with the District of Columbia and the U.S. government, 36 states currently have the power to execute inmates. Through the centuries there has been endless debate about the morality, legality, and constitutionality of capital punishment. For many (and for my paper’s sake) the debate is whether or not the death penalty is ethical. Specifically, is it ethical to put someone to death for a crime that they committed? There are definitely two sides to this debate, and several reasons on each side that...
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...(Kourtsounis, 2009). According to the Innocence project’s website; in greater than fifty percent of wrongful convictions, the use of invalidated or improper forensic techniques played a role in cases; which were later overturned by DNA testing. Unlike other forensic methods, serology has been subjected to rigorous scientific testing to achieve validation. Even still, these methods can be inaccurately conducted or counterfactually conveyed during the trial (Innocence Project, 2012). Since the evidence presented during a trial can be the difference between freedom, and incarceration in many cases and death in some cases, misconduct in the forensic field is not tolerated. Some types of forensic misconduct include exaggeration of statistics, false testimony and laboratory fraud. Evidence offered by forensic scientists is often called “expert testimony”. Nevertheless, what is an expert? Is it someone who has gone to school and earned an undergraduate, graduate or doctoral degree? Alternatively, could it be someone whom has many years of “on the job training”? The answer depends on whom you ask. Regardless of who is asked, the testimony given by forensic scientists are typically given more weight than other evidence. The articulation of the findings almost always makes a difference in how the case is decided. When misconduct occurs, it is often...
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