Forensic Science and Technology Commons^™

Bullet Ricochet And Tunnelling Of Wood Substrates, Abdelrahman Khalifa

Student Theses

With the overall rise in shooting incidents throughout the country, most notably in urban areas, the capabilities and limitations of current forensic examinations of firearms-related incidents have become more apparent. An underappreciated aspect of shooting incidents is the phenomenon of bullet ricochet, which has led to ricochet-related injuries, with some cases proving fatal. Although there are processes and generally accepted standards for bullet trajectory analysis, ricochet analysis typically requires outside input from firearm examiners. Additionally, current research regarding ricochet on wood surfaces remains less thoroughly investigated than ricochet analysis on other yielding surfaces. The goal of this research was to …

Transfer Of Material Derived From Polymer-Jacketed Bullets During Cycling And Discharge, Ethan A. Frazer

Student Theses

The goal of this study was to determine alternative ways to connect a polymer-coated bullet to the handgun from which it was fired. Polymer-coated bullets are lead projectiles encased in a synthetic coating, which may vary between brands and/or models, to reduce barrel friction and heavy metal exposure. Federal Syntech^® Total Synthetic Jacket (TSJ) ammunition presents unique challenges to firearms examiners as its synthetic coating may not retain the individualizing striations found in traditional unjacketed or metal-jacketed bullets.

In this study, 9mm TSJ ammunition was fired through multiple traditionally rifled aftermarket Glock barrels. Cloth targets were set up at …

Deepfakes On Trial: Developing A High-Accuracy, Court-Admissible Ai Pipeline For Deepfake Detection In Corporate Fraud Litigation, Aiden J. Green

Honors College Theses

As deepfake technology advances, cybercriminals are increasingly using AI-generated videos and audios to impersonate executives and carry out sophisticated CEO fraud schemes. These synthetic forgeries target human trust and corporate communication systems, creating an urgent need for forensic tools capable of authenticating digital evidence with legal accuracy. This thesis presents a forensic-grade AI deepfake detection pipeline designed for this purpose, emphasizing courtroom admissibility, reproducibility, and evidentiary integrity. Built entirely with free, opensource tools, the framework combines metadata analysis, AI-powered spectrogram analysis, neural artifact detection, and facial manipulation recognition into a transparent workflow that accurately identifies synthetic media. It was trained …

Heat Induced Diagenesis And Osteometrics: An Experimental Approach To Assessing Thermal Alterations To Forensic Anthropological Data On Dry Bone, Audrey Holbeck

Department of Anthropology: Theses and Student Research

Fire appears in forensic casework in instances of arson, vehicle fire, house fire, to conceal evidence, or, in increasing contemporary frequency, wildfire, as a result of climate change. Thermal alteration is a destructive process to osseous material and can impact the accuracy of identification methods and trauma analysis by alteration of the structure, appearance, and morphology of human remains. This study seeks to validate previous research on the metric and morphological changes bone undergoes when exposed to extreme heat, and how that may impede estimation of metric features such as stature. Three long bones, a humerus, femur, and tibia, from …

Comparative Analysis Of Gunshot Trauma And Decomposition In Southeast Nebraska, Alexandra C. Tieken

Department of Anthropology: Theses and Student Research

Accurately identifying gunshot trauma (GST) in forensic anthropology remains a significant challenge, particularly in distinguishing the effects it has on decomposition. This study investigates how different types of gunshot trauma influence the rate and characteristics of decomposition in a humid continental climate, specifically southeastern Nebraska. Utilizing Sus scrofa domesticus (domestic pigs) as human proxies, four pigs were euthanized by professionals and subjected to controlled conditions at the Reller Prairie Field Station. Three pigs were inflicted postmortem with close-range gunshot trauma using a 9mm handgun, a 12-gauge shotgun, and an AR-15 rifle, while a fourth served as a trauma-free control. For …

Firearm Trauma Across Time: Investigating Civil War Gunshot Trauma And Their Impact On Modern Forensic Analysis, Morgan K. Reeder

Department of Anthropology: Theses and Student Research

This thesis will examine the ballistic trauma caused by Civil War-era firearms and ammunition. These weapons, each with distinct characteristics, had a profound impact on the nature of combat and the resulting injuries. By investigating how these firearms’ ammunition interacted with human bone structure, this research will offer a detailed analysis of the trauma these weapons produced.

This research intends to answer several key research questions. First, how did the different types of Civil War firearms affect skeletal remains? Second, what are the key characteristics of gunshot trauma caused by these firearms in terms of bone fracturing and fragmentation, and …

Wildfire And Decomposition: A Taphonomic Analysis Of Thermal Alterations And Decomposition, Ashley Novak

Department of Anthropology: Theses and Student Research

Within the field of forensic anthropology, practitioners may be faced with remains that have been thermally altered by thermal alterations caused by wildfire. Within the field, very little research has been conducted examining how these thermal events impact rates of decomposition. While research has been conducted generally on the effects of thermal alteration on decomposition, these studies do not look through this lens and provide answers to the question of how do thermal alterations caused by wildfires affect rates of decomposition? This research examines the effects of thermal alteration caused by wildfire on the rate of decomposition. A decompositional study …

Trends In Dna Aanalysis To Determine Postmortem Interval: A Systematic Lilterature Review, Victoria S. Kashkin

Department of Anthropology: Theses and Student Research

Forensic taphonomy is a recently popular field within forensic anthropology with limited research in the Central Great Plains. Given decomposition varies by region, more studies must be done to understand aspects of decomposition in this region. However, it is one of the most important subfields of forensic anthropology since determining postmortem interval (PMI) is extremely important to successfully identifying a missing individual if other indications of who the individual is are nonexistent. In this study, a systematic literature review was conducted to answer what trends are seen in research being done for using DNA to determine PMI, and what methods …

Overlooking The Utility Of The Tattoo As An Investigatory Lead: An Exploratory Study Of Tattoo Documentation Quality Among Investigators And Medical Examiners, Deanna Corsetti

Student Theses

Tattoos have not only served as a subject of interest across cultures and disciplines for centuries, but also serve as a critical component of forensic investigations. Tattoos as traces–when properly identified and documented–serve as a valuable investigatory lead in cold, missing persons and unidentified remains cases. By examining the locations, dimensions, colors, and overall imagery of tattoos, investigators are able to use tattoos as a method of rapid, tentative identification of human remains (Miranda 2019). This study seeks to evaluate the quality and scope of tattoo documentation in cases classified as being unsolved. Specifically, tattoo data was collected from redacted …

Wound Ballistics With The Focus On Projectile Deformation, Nikita Khanov

D.U.Quark

Terminal ballistics, also called wound ballistics, is a field of ballistics that studies the projectile behaviour upon impact with a target. While the physical damage induced by the projectiles (typically bullets) and its medical treatment is well-researched, the deformation that the projectile itself undergoes is often underestimated in importance, and the research on this topic is lacking, although such changes can be a valuable source of forensic evidence. This review evaluates the deformation that occurs to non-fragmenting and various fragmenting bullets upon impact, as well as the effect that the body decomposition has on the bullets. The knowledge and understanding …

Analysis Of Skeletal Trauma: Examining Current And Potential, Maia Stevenson

D.U.Quark

Skeletal trauma is an important component of death investigations which is often discovered through postmortem computed tomography (PMCT) scanning. The analysis of skeletal trauma is a key process in the medicolegal field which could provide information on the cause and manner of death of the individual. Though PMCT provides useful imaging data for discovery, there is a lack of reliable technological tools for analyzation of such data. More definitive skeletal reconstruction tools and injury mechanism categorization tools would increase the efficiency of the post-mortem examination process. This review observes the current methods of discovering skeletal trauma through PMCT and surveys …

Global Crossroads Of Cybercrime: Youth, Enterprise And State Vulnerabilities In The Digital Age, Christopher S. Kayser, Kyung-Shick Choi

International Journal of Cybersecurity Intelligence & Cybercrime

No abstract provided.

Need Of Paradigm Shift In Cybersecurity Implementation For Small And Medium Enterprises (Smes), Shekhar Pawar, Hemant Palivela

International Journal of Cybersecurity Intelligence & Cybercrime

The increasing digitization of small and medium enterprises (SMEs) has significantly increased their attack surface, creating opportunities for various cyberthreats. In the global market, there are various cybersecurity standards and frameworks available, but there are still many cyber news stories from each corner of the world talking about increasing sophisticated cyber-attacks among organizations. According to recent studies, one out of five cyberattacks is targeting SMEs. Even though SMEs are relatively smaller as individuals, they are responsible for maximum contribution towards the betterment of the global economy, including the highest role in GDP and various employment opportunities. As compared to large …

Forensic Evidence And Its Effect On The Criminal Legal System, Kelsie L. Winter, April Terry

SACAD: Scholarly Activities

The use of forensic evidence is a relatively new initiative, gaining momentum and popularity in the 1980s and 1990s, for its role in addressing wrongful convictions. Yet, with advancements still being achieved, mistakes have been uncovered. In the criminal legal system, inaccurate evidence and/or information can be a barrier for seeking justice. Collectively, estimates suggest forensic errors occur in anywhere between 46-100% of forensic cases, with varying errors occurring based on the type of evidence (e.g., forensic pathology vs. seized drug analysis). As such, this literature review outlines the unreliable aspects of forensic evidence, the misinterpretation of such findings, and …

The Manipulation Of Odor Availability Of Training Aids Used In Detection Canine Training, Katylynn B. Sloan, Michele N. Maughan, Caitlin E. Sharpes, Robin R. Greubel, Shawna F. Gallegos, Aleksandr E. Miklos, Lindsay D. Waldrop

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Detection canines can identify numerous substances for which they have been trained. Historically, and a point of ongoing contention, detection canine threshold (i.e., sensitivity or limit of detection) training has primarily focused on changing the weight of the training aid substance used. There has been minimal focus on other principles, such as surface area, confinement, and temperature, which can be manipulated to affect odor availability. That said, trainers have been manipulating odor availability for years without necessarily understanding the governing scientific principles. The aim of this review is to highlight the principles that control odor availability of a substance and …

Military Forensic Archaeology: The Process And Recovery Of U.S. Missing-In-Action (Mia) Service Personnel, William Belcher, Luann Wandsnider, Ella N. Axelrod, Finn Kennison, Alicia Lawson

Department of Anthropology: Faculty Publications

The United States (U.S.) Department of Defense's (DoD) Defense POW/MIA Accounting Agency (DPAA) is the largest skeletal identification laboratory in the world and receives several hundred cases per year for identification related to Missing-in- Action (MIA) U.S. service members. While there are various sources for these accessions, by far the largest source is through unilateral or bilateral (done in cooperation with another governmental entity or nongovernmental organization) as well as public-private partnership excavations. While the DPAA-style military forensic archaeology follows archaeological principles and recording standards, the work is goal-oriented, evidence/trace-driven, and time-constrained— a common occurrence with cultural resource management sites …

Review Of Digging For The Disappeared: Forensic Science After Atrocity, Abigail Vaughn

Nebraska Anthropologist

Since the field's development, individuals and communities involved in and affected by international forensic investigations have been confronted with many political and ethical dilemmas. The book, Digging for the Disappeared: Forensic Science After Atrocity (2015), by Adam Rosenblatt, attempts to identify and articulate the various debates surrounding humanitarian forensic work. In doing so, the author focuses on four key areas; the purpose of such investigations, the stakeholders and expectations involved, and what may realistically be accomplished. While sympathetic to the perspective of forensic practitioners, Rosenblatt presents the positions of all parties in an unbiased manner, introducing the reader to …

Program And Proceedings: Nebraska Academy Of Sciences 1880–2025, 145th Anniversary Year, One Hundred-Thirty-Fifth Annual Meeting

Nebraska Academy of Sciences: Programs and Proceedings

Program

Aeronautics and Space Science

Biological and Medical Sciences

Biology

Chemistry

Earth Sciences

Science Education

Anthropology

Applied Science and Technology

Physics and Engineering

Forensic Sciences

Ecology, Sustainability, and Environmental Science

Maiben Lecture: Mary Ann Vinton, "State of the Academy"

Friends of Science Awards: David Crouse and Daniel Sitzman

The Role And Impact Of Forensic Evidence In The Prosecution Of Homicide Cases In The U.S., Afrah Dakhilallah A. Altubait

Theses and Dissertations

The role of forensic evidence in the criminal justice process is an important topic that is significant from both theoretical and practical perspectives. The present study is dedicated to a critical analysis of the role of this evidence in the U.S. criminal justice process with a focus on its significance in homicide cases. Specifically, this dissertation examines the implications of using DNA and fingerprint evidence for convictions in U.S. homicide cases by analyzing the role of DNA and fingerprint evidence in the prosecution of “hot” and “cold” homicide cases, discussing the main ways in which forensic evidence assists with prosecuting …

Analysis Of Shotshell Breech Face Impressions Using A Computer-Based Algorithm, Carly Renee Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

Forensic firearm analysis involves the comparison of test fires from a suspect firearm to an unknown sample, typically collected from a crime scene. Test fires and the unknown sample are examined for agreement in class characteristics and sufficient agreement in individual characteristics using a comparison microscope. The forensic analysis of firearms has been challenged both in court and by governmental organizations for its subjective nature and the inability to accurately report error rates.

To combat these challenges, the National Institute of Standards and Technology (NIST) has proposed using computer-based algorithms, such as Congruent Matching Cells (CMC). These CMC algorithm calculates …