Forensic Science and Technology Commons^™

Seasonal Effects On The Arrival And Colonization Of Blow Flies (Diptera: Calliphoridae) On Carrion In New Jersey, Amanda A. Hernandez

Student Theses

Blow flies (Order: Diptera, Family: Calliphoridae) are a valuable forensic tool. Female blow flies will lay eggs (colonize) on remains often within minutes of death and entomological methods are based on their behavior and development to extrapolate postmortem intervals (PMI). External factors, such as temperature and weather patterns can influence timing of this behavior. This study seeks to gain a better understanding of the environmental factors that impact this behavior across two seasons. In this study, arrival and colonization behavior was investigated on rat carcasses from sunrise to sunset in a semi-rural region of New Jersey (n=64). Video recording software …

Reply To Response By Fbi Laboratory Filed In Illinois V. Winfield And Affidavit By Biederman Et Al. (2022) Filed In Us V. Kaevon Sutton (2018 Cf1 009709), Susan Vanderplas, Kori Khan, Heike Hofmann, Alicia Carriquiry

Department of Statistics: Faculty Publications

1 Preliminaries

1.1 Scope

The aim of this document is to respond to issues raised in Federal Bureau of Investigation¹ and Alex Biedermann, Bruce Budowle & Christophe Champod.²

1.2 Conflict of Interest

We are statisticians employed at public institutions of higher education (Iowa State University and University of Nebraska, Lincoln) and have not been paid for our time or expertise when preparing either this response or the original affidavit.³ We provide this information as a public service and as scientists and researchers in this area.

1.3 Organization

The rest of the document precedes as follows: we begin …

Effects Of External Decontamination Of Methamphetamine In Juvenile Hair, Rebecca Mitrani

Student Theses

Methamphetamine is a common illicit substance abused in the United States. Hair is one matrix that is analyzed to determine the presence and concentration of methamphetamine. When hair is analyzed, an external decontamination step is commonly performed prior to drug extraction to avoid a potential positive result from environmental exposure in someone that has not ingested the drug themselves. In child-custody scenarios, however, it is important to know if a child is often around such illicit substances. This study serves to assess if there is a significant difference in methamphetamine concentrations in samples from children up to 12 years old …

Investigating The Mechanisms Driving Mercury Reduction And Emissions In Soil, Hamil Patel

Student Theses

The water-induced emission of mercury from soil has been studied, but a complete understanding of the mechanisms driving mercury reduction and emission in soil has not been reached. The current understanding is an immediate expulsion of soil gaseous mercury upon water treatment and an upward transport of dissolved soil ionic mercury as the water evaporates. We analyzed emissions from several types of samples using various methods to further our understanding on the mechanisms involved. Light-induced emissions from aqueous samples of humic acid (HA) spiked with mercury (II) chloride (HgCl₂) showed that at higher concentrations of HA, less mercury …

Elisa Validation Method For The Detection Of Ketamine In Hair, Daria A. Centonza

Student Theses

An ELISA method was developed and validated to detect ketamine in human hair samples. Ketamine is an anesthetic drug that causes memory loss, dissociative sensations, and hallucinations. Due to these adverse effects, ketamine is a common drug used in drug facilitated sexual assaults (DFSAs). It is very important to be able to detect the substances used in DFSAs over a longer period of time due to the delayed reporting of these crimes. Victims, often out of fear and from the sedative/memory loss effects of the drugs, tend to report these crimes when it is too late to use urine and …

Evaluation Of Raman Spectroscopy As A Screening Tool To Predict Dna Recovery Potential In Skeletonized Human Remains, Cody Silverman

Honors Theses

The purpose of this study is to determine if Raman spectroscopy can be used as a rapid and non-destructive screening tool to predict DNA recovery potential for bone, and to explore the correlation between the compositional microstructure of bone and preservation of DNA. The two primary structural components of bone are calcium hydroxyapatite and collagen. It is proposed that by analyzing bone using Raman spectroscopy, the presence, state, and distribution of hydroxyapatite and collagen can be measured, which may be useful in predicting if the sample is viable for DNA analysis. The ultimate goal of this study is to develop …

An Investigation Of The Effect Of Temperature And Humidity On The Formation Of Antemortem Root Banding, Mae Griffin

Honors Theses

Microscopical hair analysis has become a controversial practice within forensic science primarily due to issues related to interpretation, and specifically overstating the significance of an association. The validity of microscopical hair comparisons has suffered from intense scrutiny by the forensic community, with one criticism being a paucity of peer reviewed research. An often-unrecognized aspect of microscopical hair analysis is its use in providing reconstructive information based on identifiable features. One example of this is postmortem root band or PMRB. PMRB is the formation of a band slightly above the root bulb and below the skin surface on the hair of …

Effect Of Coastal Environments On The Post Mortem Interval Of A Pig Carrion: Implications For Human Decomposition, Morgan Hough

Honors Theses

Forensic taphonomy involves the use of forensic techniques to determine the post mortem interval of a corpse. There are many factors that are known to influence the rate of decomposition, such as the temperature, season, soil type, moisture potential of the soil, and presence of insects or other decomposers. Previous studies in this field have focused primarily on decomposition patterns in mountainous environments in terms of terrestrial habitats or strictly aquatic environments, leaving this particular aspect of coastal settings to be unexplored.

To study these effects, the superior portion of a female pig was buried in sandy soil in mid-October …

Increasing Gas Chromatography-Flame Ionization Detection Sensitivity For Carfentanyl Detection: An Examination Of Procaine At Different Concentrations And Split Ratios, Sonalia T. Balli

Student Theses

An opioid abuse crisis in recent years has contributed to many overdoses and overdose-related deaths in the United States. In 2017, fentanyl and fentanyl analogs contributed to more than half of NYC’s overdose deaths in 2017. Carfentanyl – an extremely dangerous fentanyl analogue 100 times more potent than fentanyl – is very difficult to detect in drug samples because it is typically present in concentrations lower than analytical instruments can detect at standard settings. In this work, I hypothesize that gas chromatography-flame ionization detection (GC-FID), when optimized for the detection of carfentanyl by adjusting the split ratio, is more sensitive …

Disaster Victim Identification Competencies: A Comparison Of Dental Hygiene And Dental Assistant Students, Samantha Clara Vest

Dental Hygiene Theses & Dissertations

Purpose: The purpose of this study was to assess cognitive and affective learning outcomes of allied dental students following a disaster victim identification (DVI) multi-media learning experience. Methods: A convenience sample (n=41) of senior dental hygiene and dental assisting students from two institutions completed an IRB-exempt DVI learning experience which included a multimedia intervention with a pretest/posttest survey to assess cognitive and affective changes. The multimedia intervention was a PowerPoint presentation with educational text, audio/video recordings, and presented in a virtual synchronous format by one of the researchers. After completing the learning experience, participants were presented with 10 sets of …

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.

Program And Proceedings: Nebraska Academy Of Sciences 1880–2022, 142nd Anniversary Year, One Hundred-Thirty-Second Annual Meeting, April 22, 2022

Nebraska Academy of Sciences: Programs and Proceedings

Program

Aeronautics and Space Science

Anthropology

Applied Science and Technology

Biological Sciences

Biomedical Sciences

Chemistry

Earth Sciences

Environmental Sciences

Physics

2022 Maiben Lecture: Dan Sitzman

2022 Friend of Science Award: Julie Sigmon and Chris Schaben

An Interdisciplinary Analysis Of Dehumanization During The Holocaust, Alissa Marie Davies

Honors Theses

The body of literature surrounding the Holocaust and dehumanization is extensive. Multiple theories have been proffered to try and explain the Holocaust’s causation, each with varying degrees of acceptance from the Jewish and global communities. Meanwhile dehumanization has been studied however often through the lens of a singular field. Despite the abundance of research on the Holocaust, the subject of perpetrators has had limited exploration as of yet. The present analysis seeks to examine the mechanics of dehumanization and how these mechanics could explain the behaviors behind the perpetration of the Holocaust and by extension, other genocides. This analysis will …

Development Of A Non-Invasive Dna Extraction Method From Teeth, Monalisa Heng

Honors Theses

Forensic dentistry has evolved from simple morphological investigations to genetic and molecular analysis. One of the most important techniques is DNA analysis which requires viable samples from an individual or crime site. The orofacial region can be a good source for DNA samples because the tissues can resist environmental, thermal, electrical, and mechanical challenges. Teeth are especially useful as a source of genetic material because the DNA located in the pulp is surrounded by protective mineral tissue. The DNA in the pulp tissue is currently accessed through destructive methods involving crushing, pulverization, and splitting the tooth. Unfortunately, destructive methods destroy …

Bci Validation: Yfiler Plus Kit Validation, Chloe Koon

Honors Projects

In order to have access and use the Combined DNA Index System (CODIS), it is required by the Federal Bureau of Investigation's Quality Assurance Standards (FBI-QAS) for Forensic DNA Units to complete comprehensive validation studies on all equipment, materials, and methods used in the process of DNA analysis. This study continues validation previous done within the Ohio Bureau of Criminal Investigation (BCI). YFiler Plus is a DNA amplification kit that is used in cases where it is most useful to examine only male DNA profile(s) within a sample by amplifying loci only on the Y-Chromosome. Components of this study include …

Stigma Towards Offenders Diagnosed With Mental Illness, Christina N. Yocca

Student Theses

Mental health stigma is a key factor to what makes members of the community who are diagnosed with mental illness feel like outcasts to the “normal” population. This study investigated the relationship between right-winged beliefs and offenders diagnosed with mental illness. Sigma as it relates to mental health, offenders, and right-winged beliefs have been studied separately before, but there is a lack of information on the stigma that the public has towards offenders who struggle with their mental health and the possible predictors of stigma towards this group. Overall, this study aimed to further research in the intersectionality of stigmatized …

Understanding Cybercrime Offending And Victimization Patterns From A Global Perspective, Jin R. Lee

International Journal of Cybersecurity Intelligence & Cybercrime

Cybercrime research within criminology and criminal justice sciences has increased over the past few decades, improving the knowledge and evidence-base around cybercrime offending and victimization generally. While earlier cybercrime studies were based primarily in the United States, there has been a recent surge in studies using international samples and multidisciplinary approaches to understand cybercrime patterns. The current issue of the International Journal of Cybersecurity Intelligence and Cybercrime consists of four articles that seek to advance our understanding of cybercrime behaviors from a global perspective. To that end, the objective of this paper is to provide a brief overview of the …

The Relationship Between Parenting Practices And Cyberbullying Perpetration: The Mediating Role Of Moral Beliefs, Jaeyong Choi, Seungmug (Zech) Lee, Layne Dittmann

International Journal of Cybersecurity Intelligence & Cybercrime

Criminologists and psychologists have long recognized that parenting practices can affect childhood outcomes and the development of moral beliefs in children. Another body of literature provides evidence that morality is a key cause of antisocial behavior. Yet, a noticeable gap in this line of work has been testing the mediation effects of parenting practices on cyberbullying via moral beliefs. Using a sample of South Korean adolescents, we tested whether moral beliefs mediate the relationships between parenting practices and cyberbullying perpetration. Results show that parental supervision and excessive parenting can influence cyberbullying perpetration and that the impact of parenting practices is …

Social Construction Of Internet Fraud As Innovation Among Youths In Nigeria, Austin Ayodele Mr., Jonathan Kehinde Oyedeji, Huthman Olamide Badmos

International Journal of Cybersecurity Intelligence & Cybercrime

The proliferation of internet technologies has shaped interactions in contemporary society. Despite the pivotal importance of the internet to the global economy, it has several negative consequences such as internet fraud. This study examined the perception that young adults in Nigeria hold about internet fraud as an innovative means to economic survival rather than as a criminal enterprise. Robert Merton’s Anomie/Strain Theory (AST) was adopted as the theoretical thrust of the study. Adopting a qualitative data collection method, 15 participants were selected using the non-probabilistic purposive and snowballing techniques while opinions were sampled through in-depth interviews in different locations within …

Cybersecurity Risk In U.S. Critical Infrastructure: An Analysis Of Publicly Available U.S. Government Alerts And Advisories, Zachary Lanz

International Journal of Cybersecurity Intelligence & Cybercrime

As threat actor operations become increasingly sophisticated and emphasize the targeting of critical infrastructure and services, the need for cybersecurity information sharing will continue to grow. Escalating demand for cyber threat intelligence and information sharing across the cybersecurity community has resulted in the need to better understand the information produced by reputable sources such as U.S. CISA Alerts and ICS-CERT advisories. The text analysis program, Profiler Plus, is used to extract information from 1,574 U.S. government alerts and advisories to develop visualizations and generate enhanced insights into different cyber threat actor types, the tactics which can be used for cyber …