Forensic Science and Technology Commons^™

The Normalization Of Clandestine Graves In Mexico, Alejandra Vela

Themis: Research Journal of Justice Studies and Forensic Science

Clandestine graves are increasing at an alarming rate in Mexico, as cartels fight for dominance over the wealthiest territories. Those who fall victim to cartels are brutally tortured into submission or are murdered and disposed of. These graves are the preferred method of body disposal by the cartels. By disposing of various victims in hidden locations, the cartels seek to erase the existence of these individuals. Victims are reduced to only bone fragments and ash. Friends and family of those who have gone missing have created a large search organization, Madres Buscadoras, to combat the helplessness of authorities. Madres Buscadoras …

Oviposition And Immature Development Of Blowflies In Forensic Investigations, Amalia Herrera-Benitez

Themis: Research Journal of Justice Studies and Forensic Science

Forensic entomology is a subspecialty within the field of forensic science where insect evidence is analyzed to solve criminal cases. Insects begin to colonize the body, with blowflies being the first insects to arrive. Within minutes, blowflies can lay eggs on a decomposing body, and the larvae will feed once they hatch. The life cycles of blowflies are analyzed to help determine an estimated post-mortem interval (PMI), which is crucial in investigations, as it can help establish a timeline. Various factors, such as temperature and access to the body, can cause delays in the oviposition of blowflies. A delay in …

The Rape Kit Backlog: Problems And Solutions, Tracey Cao

Themis: Research Journal of Justice Studies and Forensic Science

This literature review examines the ongoing issue of rape kit backlog in the United States. Rape kits are a means of evidence collection from victims of sexual assault that can be used in court. Across the nation, many state jurisdictions have hundreds and thousands of rape kits left untested and locked away in storage facilities. Consent for testing, police bias, and funding issues are the main issues that will be addressed. Many victims choose not to have their kits tested. Other kits never get tested due to police choosing not to submit a kit due to their bias against some …

Detection Canines: An Insight Into Investigative Working Dogs, Adriana Pliego

Themis: Research Journal of Justice Studies and Forensic Science

In a comprehensive exploration of detection canines, this paper aims to research the depth of their utilization by many investigative agencies and fields. A relevant case is discussed to present the application of detection canines and how they are useful for investigative measures. Shedding light into the various components of detection canines, this paper will discuss desirable canine characteristics that are sought out. On the other hand, undesirable characteristics are also discussed to inform recruiters of which attributes they should opt out of. This paper continues to discuss the roles and capabilities of detection canines given their unique potential. Then, …

Forensic Psychology Of Serial Killers, Karla Suarez

Themis: Research Journal of Justice Studies and Forensic Science

Many serial killers share patterns in psychological and neuropsychological disorders and behaviors. These behaviors and patterns should be recognized and acknowledged to understand why serial killers murder without remorse or guilt. It is important to discuss matters such as common patterns, typologies, and characteristics within serial killers. After looking at these essential aspects of serial killers, common neurodevelopmental disorders, brain damage, and biological epigenetics will be further explored. In order to fully assess this topic, forensic psychology and behavioral analysis are essential to aid in understanding serial killers and how their brains function to lead them to the actions that …

Comparative Analysis Of Forensic Science Systems: Scotland Vs. America, Alec Noland

Themis: Research Journal of Justice Studies and Forensic Science

Forensic science plays an important role in the justice system of both the United States and Scotland, but the structure, application, and effectiveness differ significantly. This research paper presents a comparative analysis of forensic science in two different legal and institutional contexts, examining differences between the two forensic science systems. This includes forensic laboratories and services, education and training, policing, court procedures, legal framework, and crime scene investigation. The analysis highlights significant differences such as Scotland’s centralized system versus America’s decentralized system, which impacts resource allocation and standardization for forensic science. Despite major differences, both countries emphasize scientific reliability, standardized …

Current Challenges Of Digital Forensics, Alec Noland

Themis: Research Journal of Justice Studies and Forensic Science

Criminals have access to advanced technology that enables them to carry out malicious activities, often leaving behind digital evidence. Digital forensics is the scientific investigation of digital evidence that aims to uncover criminal activity and prevent further disruption. The increase in cybercrime has made digital forensics an essential aspect of the justice system. However, the field is currently struggling to keep up with the rapidly growing threat of cybercrime due to several challenges. One of these challenges stems from a lack of universal standardization in required qualifications, education, and training, causing discrepancies between agencies and organizations. The pace of technological …

The Limitations And Future Of Isotope Analysis In Forensic Anthropology, Kris Weller

Themis: Research Journal of Justice Studies and Forensic Science

This research paper will discuss the applications of isotope analysis in forensic anthropology, focusing on the limitations of this technique and its potential future uses. Isotope analysis is based on the principle that isotope ratios vary across geographic regions and that humans incorporate those unique isotope ratios into their bodies when they eat and drink. Forensic anthropology uses isotope analysis to determine a decedent’s approximate region of origin or residence. It is especially in cases where the remains are partially or highly decomposed, and when other avenues of investigation have been exhausted. In its current form, the applications of isotope …

Understanding Cadaver Dogs, Carlyn Sampson

Themis: Research Journal of Justice Studies and Forensic Science

The exploration of cadaver dogs as an accuracy and reliability tool in the field of forensic science. Due to limited research on cadaver dogs, this paper will illustrate the main factors that are crucial to making reliable and accurate scent detection dogs. It also highlights the olfactory system of dogs, which sets them apart from other mammals and enables them to detect scents with a high degree of accuracy. It will dive into the research on the genetics of canine olfaction, and the role of olfactory receptor genes in scent identification. It is demonstrated that different dog breeds are comparable …

Child Pornography: A Growing Threat For Forensic Science In The Digital Age, Nadia Palomares

Themis: Research Journal of Justice Studies and Forensic Science

In the United States, child pornography is any visual portrayal of people under the age of eighteen in sexually explicit circumstances. Child pornography can be found in multiple forms. With each advancement in visual technology, there is a new form in which sexual content, including child pornography, can be depicted. Photographs, films, videos, and live streaming are all popular modern forms, while artwork and the written word were popular forms before the invention of the camera in 1816. Unfortunately, the rate of these advancements in technology has far surpassed the rate of those in forensics. The use of outdated techniques …

The Use Of Microbiome Sequencing To Identify Individuals In Forensic Science, Sophia Konieczny

Themis: Research Journal of Justice Studies and Forensic Science

The Human Genome Project's (HGP) completion in 2003 laid the groundwork for further research into the human body. This paved the way for microbiome sequencing, revealing the diverse microbial communities within the human body. These advancements led to the emergence of microbial forensics, leveraging Next Generation Sequencing (NGS) technologies like Amplicon sequencing and shotgun metagenomics for individual identification. Unlike traditional genetic profiling, microbiome analysis provides insights beyond genetic profiling, offering information about an individual's lifestyle and environment. Microbial communities on the skin's surface and objects can serve as trace evidence, aiding in suspect identification and investigative leads. Despite its promise, …

Discovering A Pathway To Reestablishing Policing By Consent In The United States, Everett Glynn

Themis: Research Journal of Justice Studies and Forensic Science

Policing in the 21^st century faces issues with leadership and accountability within officer ranks. Police organizations increasingly resemble paramilitary organizations, from their hierarchy to their eagerness to use force. Investigations into the conduct of the Minneapolis, Chicago, and Ferguson police departments uncover widespread, paternal issues of abuse from police officers. The abuse includes paternal excessive force, discrimination, and even the social media targeting of community members of color Solutions proposed from President Obama’s Task Force on 21^st Century Policing, combined with a proposition to espouse Sir Robert Peel’s Principles of community policing, offer a pathway toward regaining the …

Advancements In Technology To Solve Cold Cases, Melissa Hernandez

Themis: Research Journal of Justice Studies and Forensic Science

The purpose of this paper is to highlight the crisis of cold case investigations and discuss the advancements being made in this area over the last four decades. Technology such as CCTV cameras, DNA Phenotyping, and Genetic Genealogy have allowed many cases to be reopened but there are still not enough resources or funds to close the immense number of unsolved cases. There are also ethical concerns being addressed to allow for this technology to continue to be applicable. In some instances, it takes a combination of preexisting technology and new applications to work around previous barriers in investigations. Despite …

Examining The Relationship Between Legal Systems And Forensic Science: Current Issues And Proposed Solutions, Rowan Dunton

Themis: Research Journal of Justice Studies and Forensic Science

Forensics and legal systems are often seen working together, but the relationship between the two disciplines is thornier and more complex than it may appear on the surface. This paper will examine why courtrooms struggle to accommodate forensic fields, how the nature of science can impede its utilization in court, and where legal education may fall short in educating students about the forensic sciences. After the literature is reviewed, solutions will be proposed to address each area of concern. Where possible, these solutions expand on existing infrastructure and ideas to make them easier to incorporate. Since the greater-scope issue is …

Blood’S Evidentiary Value Based On Its Biological And Physical Properties, Samantha Boman

Themis: Research Journal of Justice Studies and Forensic Science

Prior to 1955, bloodstain evidence was considered to be unreliable and therefore inadmissible in a court of law. Today, DNA profiles can be derived from leukocytes, which comprise less than 1% of our total blood volume. Aside from genetic profiles, the biological and physical properties of blood can reveal a great deal to investigators. The first landmark case to utilize blood’s class characteristics reliably was in the State of Ohio vs. Samuel Sheppard. This paper explains how viscosity, surface tension, flow, velocity, and Newtonian laws of motion can be used to determine: the relative locations of victims and offenders, handedness …

The Crisis Of Femicides In Mexico, Alejandra Vela

Themis: Research Journal of Justice Studies and Forensic Science

Femicides are a growing issue in Mexico. These murders are intertwined with the incompetence of authorities, poverty, corruption, and organized crime. Authorities tend to blame victims by not taking missing reports seriously, nor do they conduct searches in these urgent situations. Authorities do not have DNA databases, space in morgues, and have little forensic science training. Ways of identifying remains involve odontology, bitemarks, and saliva. These provide a means of identifying through individual characteristics and DNA. Evidence is usually mishandled and not tested, or purposely lost to stop the investigation, thus, involving corruption. Criminal organizations, known as cartels, bribe authorities …

Chatgpt As Metamorphosis Designer For The Future Of Artificial Intelligence (Ai): A Conceptual Investigation, Amarjit Kumar Singh (Library Assistant), Dr. Pankaj Mathur (Deputy Librarian)

Library Philosophy and Practice (e-journal)

Abstract

Purpose: The purpose of this research paper is to explore ChatGPT’s potential as an innovative designer tool for the future development of artificial intelligence. Specifically, this conceptual investigation aims to analyze ChatGPT’s capabilities as a tool for designing and developing near about human intelligent systems for futuristic used and developed in the field of Artificial Intelligence (AI). Also with the helps of this paper, researchers are analyzed the strengths and weaknesses of ChatGPT as a tool, and identify possible areas for improvement in its development and implementation. This investigation focused on the various features and functions of ChatGPT that …

An Interview With Dr. Steven Lee: Scientist, Jazz Musician, Athlete, Wine Connoisseur, And Founder And Former Director Of The Forensic Science Program At Sjsu, Steven Lee

Themis: Research Journal of Justice Studies and Forensic Science

No abstract provided.

Cognitive And Other Types Of Biases Affecting Forensic Evidence: Research Analysis And Expert Conclusions, Sukhmanpreet Kaur

Themis: Research Journal of Justice Studies and Forensic Science

This paper identifies the issue of cognitive bias, with emphasis on confirmation bias, and its implications within the forensic science field. Biased thinking or processing of forensic evidence can have significant effects on an investigation process. The literature analyzed discusses the consequences of providing contextual or irrelevant ancillary information to forensic experts. Following this discussion, the opinions held by forensic professionals with regards to confirmation bias and erroneous conclusions will likewise be evaluated. It is important that the forensic science field continues to listen to its experts in order to develop solutions for dealing with and preventing instances of confirmation …

Detecting Child Sexual Abuse Images: Traits Of Child Sexual Exploitation Hosting And Displaying Websites, Enrique Guerra, Bryce G. Westlake

Faculty Research, Scholarly, and Creative Activity

Background
Automated detection of child sexual abuse images (CSAI) often relies on image attributes, such as hash values. However, electronic service providers and others without access to hash value databases are limited in their ability to detect CSAI. Additionally, the increasing amount of CSA content being distributed means that a large percentage of images are not yet cataloged in hash value databases. Therefore, additional detection criteria need to be determined to improve identification of non-hashed CSAI.
Objective
We aim to identify patterns in the locations and folder/file naming practices of websites hosting and displaying CSAI, to use as additional detection …

Frequency Of Lip Print Patterns Among Females And Males At San Jose State University, Daniela Zopiyactle

Themis: Research Journal of Justice Studies and Forensic Science

Lip prints have distinct forms of wrinkles and grooves unique to an individual much like fingerprints, footprints, and palm prints. Cheiloscopy, or the study of the grooves and wrinkles on the labial mucosa, helps classify, document, and evaluate lip print patterns. This article utilizes cheiloscopy to analyze students from the San Jose State University population; including 25 participants: 15 females and 10 males of ages between 18-45 years. Print collection utilized a matte lipstick, evenly applied on the lip, to create an impression using tape and white bond paper. Then, using the Suzui and Tsuchihashi method, researchers classified the lip …

Current Applications And Limitations Of Forensic Entomology, Helena Volckaert

Themis: Research Journal of Justice Studies and Forensic Science

Forensic entomology is the study of arthropods concerning their application in crime scene investigation as a method of predicting postmortem interval (PMI) in deceased or missing individuals. PMI is determined by the life stage of insects present on-scene. Insects used in criminal investigations are primarily beetles, flies, or moths; this may also include various scavenging insects and hitchhiking mites. These creatures help colonize decayed tissue, providing crime scene personnel with live specimens collected and examined for biological evidence. Forensic entomology is currently a niche application in most investigations—as qualified entomologists are often needed—and proper analysis of collected evidence can be …

Qualitative Analysis Of Luminol Efficacy On Bleach-Cleaned And Paint-Concealed Blood, Adam Wykoff

Themis: Research Journal of Justice Studies and Forensic Science

The presence of blood at a crime scene can provide investigators with a treasure trove of information regarding the nature and circumstances of a particular crime and aid in crime scene reconstruction; however, attempts at concealing blood are common scenarios. The development of chemiluminescent and fluorescent-based presumptive tests, such as the luminol and fluorescein tests, have made it more challenging to definitively remove or mask blood on a surface. The purpose of this experiment was to qualitatively measure the overall efficacy of luminol, concerning its ability to positively detect small bloodstains found on common household floor surfaces (wood, carpet, and …

The Ability Of Vitreous Metabolite Concentration To Determine Time Of Death, Victoria Wiggins

Themis: Research Journal of Justice Studies and Forensic Science

This paper analyzes the ability of vitreous fluid to determine time of death. The high variability in current methods used to establish post-mortem interval (PMI), or the amount of time between death and post-mortem examination make it difficult to obtain an accurate estimation. The concentration of metabolites found within vitreous fluid, such as potassium (K+), hypoxanthine (Hx), and magnesium (Mg), are the most researched alternatives to traditional methods in PMI determination because of the relative isolation of vitreous within the body and its ability to withstand degradation. There is no clear consensus on which metabolite provides the most accurate data …

Recent Trends, Current Research In Cyberpsychology: A Literature Review, Amarjit Kumar Singh, Pawan Kumar Singh

Library Philosophy and Practice (e-journal)

Cyberpsychology refers to the study of the mind and behavior in the context of interactions with technology. It is an emerging branch, which has focused on the psychological aspects connected to the increasing presence and usages of technology in modern lives. This paper traces recent advancement and trends of Cyberpsychology is an emerging domain of knowledge and goes on the give a literature review of the same. An analysis of the recent research and literature covering 300 most relevant research papers from the period of 2012 to 15, August 2019 was conducted to determine and shape the research pattern based …

Decomposition Of Pig Carcasses At Varying Room Temperature, Jacqueline Abad Santos

Themis: Research Journal of Justice Studies and Forensic Science

The goal of this study is to assess the qualitative scoring of decomposition scales with statistical analysis while also determining which indoor environment will decompose the fastest. When comparing the three indoor environments, water decomposition appears to be the fastest, but the method of analysis for this study determines that using decomposition scales to analyze such environments may produce statistically insignificant results. For this study, piglets were put in a dry steel tub, a water filled steel tub, and a suitcase. These were recorded using photographs for 25 days and then scored using decomposition scales. The total score was divided …

Scientific Evidence Admissibility: Improving Judicial Proceedings To Decrease Erroneous Outcomes, Leica Kwong

Themis: Research Journal of Justice Studies and Forensic Science

In the United States, Federal Rules of Evidence 702, the Frye and Daubert standards govern the admissibility of scientific evidence in the courtroom. Some states adopted Frye while others adopted Daubert, causing varying judicial outcomes. The verdicts in some cases may be erroneous due to a nationally used standard. Frye has broad criteria of requiring scientific evidence to be generally accepted. While Daubert contains more requirements for the evidence to be admissible, such as peer review, publication, and scientific principles. Daubert, alongside FRE 702, provides a thorough guideline for trial judges who have the gatekeeping role to decide admissibility aiming …

Physical Match: Uniqueness Of Torn Paper, Marilyn Aguilar

Themis: Research Journal of Justice Studies and Forensic Science

In the forensic science field, it is generally accepted that all tears and fractures are unique; however, there is limited scientific evidence to support this. This study tests the claim that all tears are unique, focusing on paper. One-hundred Office Depot brand 3” x 5” blank, white index cards were torn in half by hand. Six halves were randomly removed; the remaining 94 halves were mixed and then matched by a novice using end-match analysis. The removal of the 6 random halves left 44 matching pairs. Of the remaining halves, all 44 pairs were correctly matched. The results show that …

Novice Ideas: Handwriting Comparisons Conducted By An Untrained Individual, Maia Lister

Themis: Research Journal of Justice Studies and Forensic Science

Forensic analysis of questioned documents includes chemical analyses of paper and ink as well as handwriting comparisons. Several elements affect handwriting analyses, including the presence of discriminatory factors that can individualize a handwriting sample and whether the handwriting has been disguised. Five handwriting samples were gathered from six individuals comprising of one reference, three natural unknowns, and one disguised sample per person. A novice conducted analyses on every collected sample and conducted comparisons of the reference sample to the unknown and disguised samples in an attempt to correctly source the unknown and disguised samples. The novice showed a high level …

The Accumulation Of Wear On Footwear Pattern Analysis, Sarah Pawloski

Themis: Research Journal of Justice Studies and Forensic Science

Wear is defined as the erosion of a shoe’s outsole or the loss of tread pattern, and it happens gradually over time with use. After a shoeprint is collected from a crime scene, it is questioned whether an individualization can be made if an exemplar is created after additional use of the shoe. The shoes of ten volunteers at San Jose State University were analyzed over a period of 40-45 days. Wear and Randomly Acquired Characteristics (RACs) were analyzed over time to determine if there were any observable changes or additions to the already present wear. It was hypothesized that …