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Articles 181 - 210 of 23471

Full-Text Articles in Social and Behavioral Sciences

Evaluating Demand-Responsive Scheduling In Public Transportation Service Offerings To Retirement Communities, Steven D. Silver Aug 2025

Evaluating Demand-Responsive Scheduling In Public Transportation Service Offerings To Retirement Communities, Steven D. Silver

Mineta Transportation Institute

This project addresses alternatives to fixed schedule local transportation service offerings to members of retirement communities. The project design measures the effects of the contrast between fixed schedule (Fixed) service and demand-responsive services (DRT) in retirement communities in Santa Clara County that are closely matched in demographic profiles and geographic location. The research team investigates the effects of scheduling alternatives in a diary format with a within-person variable of four recent trips. The measure of public transportation usage under the Fixed schedule and DRT service offerings is supplemented by a measure of subjective well-being (STS) for each trip—in other words, …

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Roadside Asset Extraction From Mobile Lidar Point Cloud, Yushin Ahn, Riadh Munjy, Stephen Choi Aug 2025

Roadside Asset Extraction From Mobile Lidar Point Cloud, Yushin Ahn, Riadh Munjy, Stephen Choi

Mineta Transportation Institute

Mobile LiDAR systems are powerful tools that help us map roads and their surroundings in 3D with great speed and precision. The data provided by these systems support urban planning efforts, digital mapping, transportation infrastructure maintenance, and more. This report presents a comprehensive workflow for roadside asset extraction using Mobile Terrestrial Laser Scanning (MTLS) data, focusing on road lane detection, cross-section slope analysis, and point cloud classification. Roadside asset extraction is the identification and classification of roadside features like signs and poles. The dataset, acquired using a high-resolution mobile LiDAR system, contains over 5.7 billion points (pieces of data) across …

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Understanding Residential Development In A High-Quality Transit Area (Hqta): An Application Of Deep Learning, Dohyung Kim Aug 2025

Understanding Residential Development In A High-Quality Transit Area (Hqta): An Application Of Deep Learning, Dohyung Kim

Mineta Transportation Institute

Considerable research addresses the dynamics between land use and public transportation, including the impacts of transit systems on urban development and vice versa. However, this research has underestimated the heterogeneity of contributing factors to urban developments near transit by property type: vacant lot and occupied property. That is, what drives development in vacant lots differs from what drives development in already-occupied property. A lack of comprehensive data that differentiates development records based on the type of property is one explanation for this research gap. This project fills this research gap by employing a deep learning algorithm and separately examining the …

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Developing An Integrated Risk Assessment Framework To Quantify The Resilience Of Critical Railway Infrastructure: Characterization Of Risks And Hazards To The U.S. Rail Network Through Empirical Data And Past Events, Haizhong Wang, Brian M. Staes, Benyamin Ghoreishi Aug 2025

Developing An Integrated Risk Assessment Framework To Quantify The Resilience Of Critical Railway Infrastructure: Characterization Of Risks And Hazards To The U.S. Rail Network Through Empirical Data And Past Events, Haizhong Wang, Brian M. Staes, Benyamin Ghoreishi

Mineta Transportation Institute

To improve understanding of the impact of natural hazards on the U.S. railway system, this project developed a comprehensive, geospatially precise dataset that maps historical hazard events to specific rail segments. The project provides insight into when, where, and how much damage natural hazards have inflicted on rail infrastructure across the country. While a rail-specific hazard database did not previously exist, this research combines data from the Geological Survey (USGS) Flood Events Database, Hydrologic Unit Codes (HUC), the National Centers for Environmental Information (NCEI) from the National Oceanic and Atmospheric Administration (NOAA), and the National Weather Service (NWS) forecast zones. …

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Experienced Latinx Urban Gardeners In San Jose, Ca, Offer Strategies For Climate Justice And Resilience, Claudia S. Damiani Fontana Jul 2025

Experienced Latinx Urban Gardeners In San Jose, Ca, Offer Strategies For Climate Justice And Resilience, Claudia S. Damiani Fontana

Master's Theses

Low-income and underinvested communities will be disproportionately affected by climate change due to limited resources, inadequate infrastructure, and insufficient support systems. Urban gardeners are responding to the need to adapt to new climate conditions while sustaining their food sources and cultural practices. Many have adapted thanks to local interventions led by the government and non-profit agencies. For this study, I partnered with La Mesa Verde (LMV), a gardening and food justice program that works with low-income Latinx families in San José, and I documented the contributions of experienced Latinx gardeners, especially those with agricultural backgrounds, to climate-resilient gardening in San …

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Understanding User Behaviors: Impact Of A 28-Day Intervention On Screen Time And Problematic Internet Use, Cade T. Campigli Jul 2025

Understanding User Behaviors: Impact Of A 28-Day Intervention On Screen Time And Problematic Internet Use, Cade T. Campigli

Master's Theses

This thesis examines a 28-day self-monitoring intervention to reduce problematic internet use among undergraduate Instagram users. A quasi-experimental factorial mixed design with a repeated measures component was used, with participants split into an experimental group (daily Instagram screen time logging) and a control group (reporting Instagram interactions). Problematic Internet use was measured using the Generalized Problematic Internet Use Scale 2 (GPIUS2). Results showed no reduction in problematic internet use in the experimental group compared to the control, nor a correlation between screen time changes and problematic internet use. However, the experimental group showed a modest decrease in mean screen time …

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Replicating Vignoles Et Al. Results On Multidimensional Self-Construal: Comparing The United States, East Asia, Southeast Asia, And Latin America, Jon Lorenz A. Lim Jul 2025

Replicating Vignoles Et Al. Results On Multidimensional Self-Construal: Comparing The United States, East Asia, Southeast Asia, And Latin America, Jon Lorenz A. Lim

Master's Theses

Contemporary research on self-construal indicates that people define and perceive themselves either as independent or interdependent. Self-construal scales have become the most common method to quantitatively measure both types of self-construal across the United States, East Asia, Southeast Asia, and Latin America. Multidimensional measures of the self tend to be more accurate in defining the self than earlier dichotomous scales. In general, European Americans and Latin Americans perceived themselves as independent and East and Southeast Asians as interdependent. In the current study, undergraduate European American, East Asian American, Southeast Asian American, and Latin American students from San Jose State University …

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Generalizability Of Existing Ai Models For Automatic Disfluency Detection In Children's Speech, Caryn W. C. Iwakiri Jul 2025

Generalizability Of Existing Ai Models For Automatic Disfluency Detection In Children's Speech, Caryn W. C. Iwakiri

Master's Theses

Achieving consensus in identifying disfluencies and diagnosing developmental stuttering has been a significant challenge for many clinicians, particularly in young bilingual children, who tend to show increased disfluencies. Artificial intelligence (AI) has the potential to recognize more complex yet systematic patterns that might not be easily observable by even trained clinicians. It also has the potential to bring consistency in the measurement of stuttered speech. This study compares the performance of four AI models, their performance on detecting disfluencies including both stutter-like-disfluencies (SLD) and typical disfluencies (TD) in monolingual and bilingual children's data, then explores whether increasing the quantity of …

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The Relationship Between The Dark Triad And Perceived Career Mobility: The Moderating Role Of Perceived Organizational Support, Julia W. R. Leong Jul 2025

The Relationship Between The Dark Triad And Perceived Career Mobility: The Moderating Role Of Perceived Organizational Support, Julia W. R. Leong

Master's Theses

Prior research on career mobility has found that personality is not a strong predictor of career mobility. However, these studies have mainly focused on the Big Five personality traits and have not looked into other personality traits as predictors. The present study has looked into alternate personality traits and their relationship with perceived internal and external career mobility. These traits were the Dark Triad traits, consisting of Machiavellianism, narcissism, and psychopathy. The present study hypothesized that each of the Dark Triad traits would positively predict both perceived internal and external career mobility and that perceived organizational support (POS) would moderate …

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The Relationship Between Psychological Contract Breach And Work Motivation And Attitude Among Tech Employees: The Moderating Role Of Conscientiousness, Rama E. Khoury Jul 2025

The Relationship Between Psychological Contract Breach And Work Motivation And Attitude Among Tech Employees: The Moderating Role Of Conscientiousness, Rama E. Khoury

Master's Theses

There has been some research on moderating factors of the relationship between psychological contract breach (PCB) and work engagement and affective commitment. However, most studies conducted have mainly focused on situational factors (e.g., job satisfaction, exchange imbalance), not on individual factors (e.g., personality traits). This research gap leaves a question in the role that personality traits play in influencing the negative consequences of PCB. The purpose of this study was to examine the moderating role of conscientiousness on the relationship between PCB and two outcomes, work engagement and affective commitment. Hypotheses were tested using 103 technology industry employees in the …

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Investigating The Complexity Of Language Acquisition For Linguistically Diverse Children, Krittin Srisajjakul Jul 2025

Investigating The Complexity Of Language Acquisition For Linguistically Diverse Children, Krittin Srisajjakul

Master's Theses

Understanding the natural productions of children's early expressive language development is important to support their development. These natural productions may also be especially complex in children with diverse linguistic backgrounds. A challenge for clinicians is how to assess these natural productions for children’s early expressive language milestones. For example, what does it mean for children to say the same word in two languages and refer to the same concept (e.g., “water” and “agua”)? Or refer to two different concepts, (e.g., “water” and “leche” (milk))? By understanding how children’s expressive language connects to conceptual understanding, clinicians can better support language learning. …

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An Ambient Nox Reduction Reactor System With And Without Forced Air, Hamid Rahai, Rylan Moffit, Komal Gada, Jeremy Bonifacio Jul 2025

An Ambient Nox Reduction Reactor System With And Without Forced Air, Hamid Rahai, Rylan Moffit, Komal Gada, Jeremy Bonifacio

Mineta Transportation Institute

Ambient nitrogen oxide (NOX) is one of the main ingredients involved in the formation of ground-level ozone (smog), which contributes to global warming and the formation of particulates in the atmosphere and causes respiratory illnesses, especially in children, older adults, and people with lung diseases. Investigations on adding titanium dioxide (TiO2) nanoparticles to the paint used on concrete surfaces such as buildings and its potential in reducing ambient NOX concentration have provided opportunities for the research and development of methods for passive control and filtration of the ambient NOX. The present research used numerical geometrical optimization to identify an optimized …

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Hydrogen Fuel Cell Application For Port Drayage Truck: Integrated Transportation And Energy Modeling, Shams Tanvir, Emu Ghosh Jul 2025

Hydrogen Fuel Cell Application For Port Drayage Truck: Integrated Transportation And Energy Modeling, Shams Tanvir, Emu Ghosh

Mineta Transportation Institute

This report investigates the viability of hydrogen Fuel Cell Electric Vehicles (FCEVs) for port drayage applications, focusing on both energy modeling and economic feasibility. Port drayage—trucking operations that move goods a short distance to and from ports—is a key part of freight logistics and the critical movement of goods in American communities. This project developed a microscopic energy consumption model using second-by-second activity data from 38 Class 8 diesel drayage trucks operating in Southern California. The model emulated FCEV operations and determined an average hydrogen fuel consumption of 0.15 kg/mile across 749 trips. This data informed a levelized cost of …

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Telling The Library’S Story: A Step-By-Step Tutorial For Using Data Visualization To Show Impact On Teaching And Learning, David Vickers Loertscher, Michelle Young Jun 2025

Telling The Library’S Story: A Step-By-Step Tutorial For Using Data Visualization To Show Impact On Teaching And Learning, David Vickers Loertscher, Michelle Young

Learning Hub

This tutorial introduces school librarians to the use of data visualization tools for documenting and communicating their impact on teaching and learning. By leveraging accessible platforms like Google Forms and Google Sheets, the authors demonstrate how librarians can build dashboards and real-time visual reports to showcase co-teaching, instructional collaboration, and student engagement. The tutorial features real-world examples, highlights common data sources already available to librarians, and argues that dynamic visual storytelling is a powerful alternative to traditional library statistics.

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Contributions Of California Teacher Librarians To Student Achievement, Keith Curry Lance, Caitlin Gerrity Jun 2025

Contributions Of California Teacher Librarians To Student Achievement, Keith Curry Lance, Caitlin Gerrity

Learning Hub

This article assesses the contributions of California Teacher Librarians (TLs) to student achievement, specifically in the area of English Language Arts and Literacy. This comparison-of-means analysis employed two major datasets: the California Department of Education (CDE) school library evaluation survey and California Assessment of Student Performance and Progress (CAASPP) data, both for the 2022-23 school year. This study found that students who met or exceeded ELA standards were more likely to be in schools with: a full-time, certified TL rather than a part-time TL or no TL; a TL–full- or part-time–rather than no TL; a TL staffing a single library …

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Addressing Urban Traffic Congestion: A Deep Reinforcement Learning-Based Approach, Tairan Liu Jun 2025

Addressing Urban Traffic Congestion: A Deep Reinforcement Learning-Based Approach, Tairan Liu

Mineta Transportation Institute

In an innovative venture, the research team embarked on a mission to redefine urban traffic flow by introducing an automated way to manage traffic light timings. This project integrates two critical technologies, Deep Q-Networks (DQN) and Auto-encoders, into reinforcement learning, with the goal of making traffic smoother and reducing the all-too-common road congestion in simulated city environments. Deep Q-Networks (DQN) are a form of reinforcement learning algorithms that learns the best actions to take in various situations through trial and error. Auto-encoders, on the other hand, are tools that help simplify complex data, making it easier for the DQN to …

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Strategized Reduction Of Greenhouse Gas Emissions Through Predicting And Extending The Service Life Of Concrete Pavements And Bridges, Fariborz M. Tehrani Jun 2025

Strategized Reduction Of Greenhouse Gas Emissions Through Predicting And Extending The Service Life Of Concrete Pavements And Bridges, Fariborz M. Tehrani

Mineta Transportation Institute

Strong, durable concrete is key to resilient, long-lasting transportation infrastructure—especially in the face of climate change. This project explores innovative strategies for predicting and enhancing the service life of concrete in pavement and bridge systems, addressing the pressing need for sustainable transportation infrastructure. As concrete is pivotal to the durability and resilience of such structures, its environmental impact demands urgent attention. This project aims to reduce greenhouse gas emissions throughout their lifecycle by extending the service life of concrete pavements and bridge decks. A significant focus of the research is on the indications of chloride ion penetration in concrete, which …

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Chains Of Equity: How Nationwide Injunctions Are Unconstitutional, Irfan Mohamed May 2025

Chains Of Equity: How Nationwide Injunctions Are Unconstitutional, Irfan Mohamed

Themis: Research Journal of Justice Studies and Forensic Science

Since the early judicial beginnings in the English Courts of Chancery, the principles of equity have guided judicial remedies for centuries. Modern American courts inherited these principles through reception statutes passed by newly independent states, which adopted English common law, including the concept of equity as a means of providing narrowly tailored remedies to resolve specific injuries. This paper examines the historical foundations of equity and argues that nationwide injunctions, which extend beyond the immediate litigants to affect the general public, are inconsistent with these principles and, therefore, unconstitutional. A historical and doctrinal analysis of the English Court of Chancery, …

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The Case Against Police Militarization: Stop Turning Police Into Soldiers, Kenia A. Silva Garcia May 2025

The Case Against Police Militarization: Stop Turning Police Into Soldiers, Kenia A. Silva Garcia

Themis: Research Journal of Justice Studies and Forensic Science

This paper will critically explore police militarization in the United States, highlighting its origins, implications, and the urgent need to demilitarize them. The rise of militarized police forces began in the 1960s—the War on Drugs and federal programs that allowed military equipment to be transferred to local police departments made their expansion even more possible. Due to this expansion, this paper discusses that police should not be militarized because it increases violence, disproportionately affects marginalized communities, particularly racial minorities, and ultimately fails to reduce crime. Evidence suggests that militarized police forces foster systemic inequalities that are rooted in historical racism—a …

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Understanding Deviance Through General Strain Theory: A Study Of The Chowchilla Bus Kidnapping, Yazmin Robles May 2025

Understanding Deviance Through General Strain Theory: A Study Of The Chowchilla Bus Kidnapping, Yazmin Robles

Themis: Research Journal of Justice Studies and Forensic Science

The following paper demonstrates the validity of Robert Agnew’s general strain theory. In particular, the paper thoroughly examines empirical support for general strain theory, applies the theory to the infamous 1976 Chowchilla bus kidnapping, and introduces policy recommendations. The paper finds support, limitations, and suggestions for general strain theory through qualitative literature analysis. Clear connections are made between the empirical findings of the theory and the motivation behind the kidnapping. In particular, the paper highlights the significance of financial strain, emotions, and opportunity as motivators in the Chowchilla case. Policy recommendations are made in connection with the theory application to …

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How Mass Incarceration Has Destroyed African American Communities, Angeliki Karvounis May 2025

How Mass Incarceration Has Destroyed African American Communities, Angeliki Karvounis

Themis: Research Journal of Justice Studies and Forensic Science

Beginning with the “Tough on Crime” movement of the 1970s, policies such as mandatory minimums, the War on Drugs, and the Three Strikes law have reinforced racial disparities in the criminal justice system. Multiple historical and systemic factors have contributed to the disproportionate imprisonment of African American individuals. This paper explores the long-term consequences of incarceration, including the erosion of family structures, the economic marginalization of affected communities, and the perpetuation of poverty and crime. The repercussions of parental incarceration on children and the challenges faced by formerly incarcerated individuals seeking reintegration into society are examples of the long-term consequences …

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Prisoner Reentry Into Society Viewed Through The Lens Of Women, Jalak Parekh May 2025

Prisoner Reentry Into Society Viewed Through The Lens Of Women, Jalak Parekh

Themis: Research Journal of Justice Studies and Forensic Science

In the 1970s, President Richard Nixon declared a War on Drugs and initiated a series of policies that were intended to combat the use of illegal drugs by implementing severe sentences for drug-related crimes. As a result, the focus of the criminal justice system veered away from rehabilitation efforts. Today, the U.S. criminal justice system has considerably high rates of recidivism. This paper examines the importance of successful reentry into society for formerly incarcerated women, especially those who must resume a caregiver role to their children. However, a relapse into criminal behavior seems imminent due to societal barriers in obtaining …

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Human Trafficking: An Examination Of Policies And The Impact Of Trafficking On Victims, Hannah Lyons May 2025

Human Trafficking: An Examination Of Policies And The Impact Of Trafficking On Victims, Hannah Lyons

Themis: Research Journal of Justice Studies and Forensic Science

Human trafficking is a pervasive and complex global issue that involves the exploitation of individuals. While there is also the trafficking of objects, this study solely focuses on sexual exploitation and forced labor of humans. This paper defines trafficking and examines the impact that trafficking has on victims’ physical and mental health. This paper also examines the intersection of human trafficking and policies designed to combat it, focusing on the effectiveness of legal frameworks and enforcement mechanisms. By analyzing the strengths and weaknesses of current anti-trafficking laws and initiatives, the paper explores how policies can be improved to better address …

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The Lasting Effects Of Gun Violence On Victims And Communities, Anthony Do May 2025

The Lasting Effects Of Gun Violence On Victims And Communities, Anthony Do

Themis: Research Journal of Justice Studies and Forensic Science

Gun violence is a pressing public health and criminal justice issue with lasting effects on victims, families, and communities in the United States. The psychological impact of gun violence can contribute to conditions such as post-traumatic stress disorder, anxiety and sleep deprivation. The issues are pronounced within marginalized or disadvantaged neighborhoods. The emergence of 3D-printed “ghost guns” presents further complications in the effort to regulate firearms. The United States stands out for its disproportionately high rates of firearm deaths. The findings in this paper highlight the urgent need for comprehensive prevention strategies that address both the current and future impacts …

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The Normalization Of Clandestine Graves In Mexico, Alejandra Vela May 2025

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 …

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Incorporating Specialized Courses On The Prevention Of Sexual Misconduct In Policing Academies, Nina Nguyen May 2025

Incorporating Specialized Courses On The Prevention Of Sexual Misconduct In Policing Academies, Nina Nguyen

Themis: Research Journal of Justice Studies and Forensic Science

A major problem within law enforcement is police sexual misconduct (PSM), where law enforcement officers commit sexual offenses while using the power of their position. Bonds of loyalty and trust between fellow officers are strong enough that offenders have no worries about being reported, even if they are caught. Studies have shown that most offending officers were new to the field or recently completed their training at a policing academy. Since many of the officers committing PSM were fresh out of their training, it indicates that the academy is not training its recruits properly on topics of sexual assault and …

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Oviposition And Immature Development Of Blowflies In Forensic Investigations, Amalia Herrera-Benitez May 2025

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 …

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The Rape Kit Backlog: Problems And Solutions, Tracey Cao May 2025

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 …

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Detection Canines: An Insight Into Investigative Working Dogs, Adriana Pliego May 2025

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, …

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The Role Of Criminology In The Courtroom, Nia Mehroke May 2025

The Role Of Criminology In The Courtroom, Nia Mehroke

Themis: Research Journal of Justice Studies and Forensic Science

Criminology and expert witness testimony play a crucial role in modern-day court proceedings. Scientific data and insights utilized in criminology can assist with seeking justice and fairness. This essay aims to provide a basis for the history of criminology and define the practice. It will explore the evolution of criminology practices and how theories have developed that are still utilized today. Furthermore, it will discuss criminologists’ many contributions as expert witnesses, including the role of ethics that criminologists must follow in court. Some key ideas presented include the methodologies criminologists use to present evidence and what standard criminologists must follow …

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