Blood Spatter Analysis
comparative Essay
598 words
Many of us enjoy watching crime scene investigation shows, but in the criminal justice system forensic investigation is an essential field that requires upright observations and a prodigious interpretation. Under forensics, it is difficult to blame someone without scientific data. For that reason, Larry K. Gaines author of the textbook Criminal Justice in Action explains the importance of Blood Spatter Analysis. Specialist can learn a great deal about violent crime by examining where blood landed at the scene, the size and consistency of drops, and the pattern of blood spatter (Gaines, 2011). Consequently, an article of the Blood Spatter Analysis will be used to explain the research methodology the author uses to proceed certain investigations.
Originally, the source used to discuss the research methodologies and the application to evaluate blood spatter evidence is the Bloodstain Pattern Analysis with an Introduction to Crime Scene Reconstruction by Tom Bevel. In a short explanation, the expert describe the involvement of criminal and forensic investigations. In addition, The Blood Pattern Analysis explains a proven methodology that engages the scientific method and provides focus and structure to the analyst as they conduct the analysis (Bevel, 2008). The scientific method is a form of quantitative data according to Peter B. Kraska, author of the textbook Criminal Justice and Criminology Research Methods. Quantitative data includes experiments, surveys/interviews, and nonreactive methods; each reviewed in detail, along with real-life examples of research to both theory and criminal justice practice (Kraska, 2008). A step further with the scientific method, the bloodstain pattern analysis helps establish a key to find the event...
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...as led to explain the scientific-method methodology and provides the adequate structure of how the blood spatter analysis work. The quantitative research have shown that using the scientific-method methodology can help us get a step closer to identify homicide such as the one explained in the video-tutorial. Finally, the expert by Bevel gave an exclusive explanation on how the scientific method provides the analyst a good source of help when identifying the blood spatter analysis with different variables and valid information.
Works Cited
Bevel, T. (2008). Bloodstain Pattern Analysis With an Introduction to Crime Scene Reconstruction. New York : Taylor & Francis Group, LCC.
Gaines, L. K. (2011). Criminal Justice in Action. Belmont, California: Cengage Learning.
Kraska, P. B. (2008). Criminal Justice and Criminology Research Methods. Boston: Pearson Education .
In this essay, the author
- Explains the importance of blood spatter analysis in the criminal justice system.
- Explains the bloodstain pattern analysis with an introduction to crime scene reconstruction by tom bevel. the scientific method is a form of quantitative data according to peter b. kraska.
- Describes the blood splatter analysis tutorial, which gives an incentive of the darker side of forensics, in this case a "messy homicide."
- Explains that the table provided as part of the blood spatter analysis depicts quantitative data.
- Concludes that quantitative research has led to explain the scientific-method methodology and provides the adequate structure of how the blood spatter analysis work.
Related
- comparative
- opinion
- explanatory
- analytical
- Forensic Science: Bloodstain Pattern Analysiscomparative essayIntroduction Bloodstain pattern analysis (BPA) is one of many specialties in the field of forensic science; the science of bloodstain pattern analysis use scientific knowledge from other fields to solve problems. BPA also uses the scientific method to examine bloodstain evidence at a crime scene where blood is present by gathering information, observing, documenting, analyzing, evaluating, and technical or peer reviewing. A bloodstain pattern analysis job is to collect, categorize and interpret the shape and distribution of bloodstains within a crime scene (Peschel, 2011). Bloodstain patterns can reconstruct a crime scene and then determine the crime as an accident, homicide, or suicide; the blood can also identify the location, quality and intensity of an external force. The purpose of a BPA’s is to determine bloodstain patterns and to recreate the action that caused the blood.
In this essay, the author
- Explains that bloodstain pattern analysis (bpa) is one of many specialties in the field of forensic science.
- Explains that the locard's principle is important in any forensic science field. the principle in bpa is applied in the retrieval and evaluation of bloodstain pattern evidence.
- Explains blood stain spatter by velocity, and bloodstain through taxonomy in order to reconstruct a crime scene.
- Explains that bloodstain pattern analysis uses high quality cameras, sketching materials, cutting instruments, and evidence packaging to collect evidence at crime scenes.
- Concludes that bloodstain pattern analysis is important in determining the type of crime that occur based on the blood pattern at a crime scene.
- Explains peschel, kunz, rothschild, and mützel's blood stain pattern analysis.
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- Explains that the location of the wound can inform investigators as to what type of crime they are dealing with.
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- Explains that rigor mortis, which is the stiffening of muscles after death, can help investigators determine when the victim died.
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- Explains that there are different types of murderers that plague our society. a serial murder is a murder of separate victims with time break within the victims. some notable serial killers are theodore bundy and jeffery dahmer
- Explains that a mass murder is the murder of four or more people in one incident, followed by sensational murders, such as robert stewart, charles witman, and others.
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- Opines that police agencies and investigators must be open to complete transparency in order to apprehend the murderer.
- Opines that the need for transparency with other police agencies and the public greatly diminishes, but if the killer is still at large, the transparency method could help catch the fugitive.
- Concludes that rigor mortis and postmortem levity can help investigators narrow down the time of death, as well as determine if the body changed positions after death.
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In this essay, the author
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- Explains that investigations of crime scene went on as far back as prehistoric times. ancient babylonians used this way for business and to try to save them for a mean of identification.
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- Explains that semen examination is a vital component in sexual assault cases, but which tests can confirm its presence?
- Explains saferstein, richard, phd criminalistics: an introduction to forensic science. prentice hall.
- Explains that preservation of evidence is vital to avoid confusion that can ultimately work against a prosecution.
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1921 wordsRead More - Gathering the Facts at the Crime Sceneexplanatory essaySaferstein, R., (2011). Criminalistics: An Introduction to Forensic Science for Ashford University, Tenth Edition. Upper Saddle River, NJ: Prentice Hall
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- Explains that in a homicide investigation, evidence can be thrown out of court if the proper chain of custody was not adhered to.
- Explains davies, k. (2008). the murder book: examining homicide. upper saddle river, new jersey: pearson education
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- Explains that forensic evidence collection is a challenging task in the real world.
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- Explains that dna is important in a criminal investigation and therefore it's important to examine dna testing.
- Explains how ballistics can be used to identify potential weapons by comparing the bullet and bullet exterior with a weapon.
- Explains that fingerprints are different on each individual, but they are still important in criminal cases. technology such as the automated fingerprint identification systems (afis) has flourish throughout the law enforcement community.
- Explains the importance of preserving the crime scene with minimal contamination and disturbance of physical evidence.
- Opines that evidence must maintain precise chain of custody to avoid being discarded or challenged in court. when a homicide is involved, evidence should be delivered by the medical examiner.
- Explains that the national academy of sciences report: a challenge to forensic science.
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In this essay, the author
- Explains that forensic science is misleading because it suggests only one type of science, but this is not the case. detectives have to figure out why and how a crime was committed.
- Explains that forensic investigations require skills of specially trained scientists, police, engineers, doctors, and others. the more evidence against a person, the greater the chance of conviction.
- Explains that murder detectives usually work in pairs and approach a crime scene with five basic questions: did the death take place at the crime site or elsewhere?
- Explains that the term "scene processing" refers to the series of steps taken to investigate a crime scene.
- Explains that crime investigation begins at the place where the crime was committed. the area must be secluded and secured to prevent the destruction of critical physical evidence that can lead police to link the criminals to the victim.
- Explains that the first police officer is responsible for preventing other non-crucial police workers and citizens from entering the scene and often establishes a border around the crime scene with ropes or tapes.
- Explains that forensic photographers take pictures of the crime scene and provide a permanent record. sketches, videos, and notes are used as visual evidence, but only photos are presented in court.
- Explains that the crime scene technician is a professional in discovering and identifying physical evidence. the scene and each bit of evidence is carefully photographed and then properly collected and trained to avoid contamination.
- Explains spiral searches are for crimes that happen in small areas, for example, a house. they start from inside the room where the crime occurred and then spread outwards.
- Advises that all evidence taken from a crime scene should be protected, so that it is not contaminated, damaged, lost, or broken. items should not be picked up by bare hand unless gloves are worn.
- Explains that document analysis covers the physical, chemical, and structural properties of papers and inks.
- Explains the differences in inks used for identification and aging, such as the chemical and dye combinations used to make them.
- Explains that experts believe that no two individuals write exactly the same. people may write in very similar styles but each has an individual way of forming and joining letters. disguised writing makes style characteristics even harder to detect.
- Explains that forensic examiners analyze differences in typed or mechanically printed documents. typewriters used a particular typeface or font.
- Explains that document examiners don't need visible print to link a person or machine to crime. they can use any marks left on the paper.
- Explains that audio or sound analysis can provide vital clues in forensic science. it can pick up faint background noises or conversations that can help identify a speaker.
- Explains that forensic investigators are always looking to improve the way they compare images of identifying evidence, such as shoe prints, faces, and fingerprints with simple held on databases.
- Explains that fingerprints are a guaranteed method of identification because each person's fingertips are unique and fingerprint ridges appear in three pattern types; loop, whorls, and arches.
- Explains loops and whorls are the most common types of fingerprint patterns. they form a circular pattern which looks like bull’s-eyes on dartboards.
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In this essay, the author
- Opines that criminal justice has numerous avenues in which to follow, making the choice of which specific field to choose a difficult decision.
- Explains that forensic science is the application of a broad spectrum of sciences to answer questions of interest to the legal system.
- Explains that forensics is a critical ingredient in law enforcement and in the solution of crimes, and states that the state police forensic laboratories are leading the efforts to develop new scientific crime-fighting capabilities and methods.
- Explains that forensics is divided into fields of specialties covering physiological/social sciences, forensic criminalistics, and other related disciplines.
- Explains vein matching, also called vascular technology, is a technique of biometric identification through the analysis of blood vessels visible from the surface of the skin.
- Explains that mobile device forensics is the newest branch of digital-forensic science, dating from the early 2000s. smartphones, the news technology in mobile devices, have led to a demand for the examination of the devices that could not be met by existing techniques.
- Explains probation and parole are vital parts of the criminal justice system. probation is a sentencing option at the disposal of local judges for minor offences such as disorderly conduct and simple assault.
- Explains that parole is strict court-imposed conditions prisoner must abide by for a specified period if released before the completion of their sentence.
- Explains that the probation/ parole division's mission is to provide for the public safety through a balance of supervision, enforcement, and provision of program services to increase the probability of offenders becoming law abiding citizens and productive members of society.
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995 wordsRead More - Evidence Analysis: Homicide Scene Analysiscomparative essayHomicide Scene Analysis Evidence analysis and ranging is the most crucial stage of investigation. The success of the case exposure lies in the gradual evidence research and collecting prior to the laboratory analysis. The CSI systematically makes his way through the crime scene collects all potential evidence, tagging, logging and packaging so it remains intact on its way to the lab. Depending on the task breakdown of the CSI unit he may or may not analyze the evidence in the lab.
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- Explains that a typical cardboard six pack container of cold beer (bottles) on the floor near the beer cooler will not be processed owing to its distance from the crime scene.
- Advises that one spent bullet embedded in the wall behind the counter should be sent to the lab for closer analysis.
- Explains that the first officer at the scene is interviewed for the initial reconstruction of the crime that has taken place.
- Explains that each person present at the crime scene is to be interviewed on the basis of information collection.
- Explains that each witness is to express his/her own version of the crime commitment in order to define personal attitude and connection with the case.
- Recommends sending all the available evidence to the laboratory expertise, though non-porous substances should preserve the imprint with the preliminary processing.
- Explains that the "quick pick" lottery ticket on counter has a blood-like impression on it. the paper is porous so the imprint can be processed further.
- Explains that a blue steel 38 caliber revolver with reddish-brown spots should be handled in the field with the help of super glue fuming as the evidence might be destroyed while laboratory delivery.
- Explains that two hair-like fibers on the revolver are not to be processed except for the collecting into the sealed evidence bag. only microscopic analysis can be of assistance.
- Explains that a ripped open cardboard carton on the floor in front of the counter may be observed for visible imprints and should be sent to the laboratory.
- Opines that a crude map and directions to the store drawn / written in pencil should be collected for laboratory expertise, as it might have belonged to criminal(s) and can contain fingerprints.
- Explains that evidence analysis and ranging is the most crucial stage of investigation. the crime scene investigation protocol includes interview, examination, photographing, sketching and processing itself.
- Explains how a $20 cigar box can be processed depending on the surface type, super glue fuming, and blood splatter. fresh-looking cigarette butt is to be collected with the forceps and packed into the plastic bag.
- Explains that the investigation period includes questioning of the probable witnesses who deliver the information about the crime to the police and contact the investigator to bring the criminal to justice.
- Explains how the evidence is processed and its connection with the people present at the crime scene is defined and studied.
- Explains how evidence is to be photographed, documented, placed into unused sealed bags, marked, and delivered to the laboratory.
1197 wordsRead More