Digital Commons Network^™

Optimization Of Hydraulic Cylinder Positioning For Wind Tower Hydraulic Erection System, Anbesh Rawal

Master's Theses

Wind produced electricity is a rapidly growing field with wind towers serving as critical components. Conventionally, special cranes are commonly used for wind tower erection. This study explores the use of hydraulic cylinders for small-scale wind tower erection. The thesis aims to find the optimal position of hydraulic cylinder connections in a hydraulic erection system for safe and energy-efficient tower erection and retraction and to enhance the performance and longevity of the system.

Structural analysis was conducted to investigate various hydraulic cylinder positioning configurations, ensuring minimal force exertion while maintaining structural integrity. The study included the selection of locally available …

Biomarkers In Borrelia Burgdorferi Infected Triple-Negative Breast Cancer Cells, Sambuddha Paul

Master's Theses

Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer with limited treatment options and a poor prognosis. Although some studies have attempted to identify new biomarkers and therapies, only a few have shown promise in clinical trials. In the context of cancer development, infectious agents rank as the third major risk factor, contributing to approximately 15-20% of cancer cases, according to the American Cancer Society. Hence, the identification of biomarkers associated with infection-originated cancer is crucial for enhancing cancer prevention, early detection, diagnosis, and treatment. Borrelia burgdorferi, the causative agent of Lyme disease, has been linked to TNBC …

An Evaluation Of The Effect Of Degradation On Irisplex Snps, Maria Gruber

Master's Theses

The information from short tandem repeats (STRs), the current standard forensic DNA typing technology, does not always result in identification. In these cases, there are other informative markers in DNA that can be used to help generate investigative leads, one of which is single nucleotide polymorphisms (SNPs). One of the uses of SNPs is for phenotype determination. Among the phenotypic characteristics that can be predicted is eye color. A commonly used tool for eye color prediction is the free, online statistical prediction model IrisPlex, which includes 6 SNPs known to control eye color.

While SNPs can be useful, they, like …

Rattus Norvegicus As A Biological Detector Of Clandestine Remains And The Use Of Ultrasonic Vocalizations As A Locating Mechanism, Gabrielle M. Johnston

Master's Theses

In investigations, locating missing persons and clandestine remains are imperative. One way that first responder and police agencies can search for the remains is by using cadaver dogs as biological detectors. Cadaver dogs are typically used due to their olfactory sensitivity and ability to detect low concentrations of volatile organic compounds produced by biological remains. Cadaver dogs are typically chosen for their stamina, agility, and olfactory sensitivity. However, what is not taken into account often is the size of the animal and the expense of maintaining and training the animal. Cadaver dogs are typically large breeds that cannot fit in …

Trace Dna Detection Using Diamond Dye: A Recovery Technique To Yield More Dna, Leah Davis

Master's Theses

This study aspires to find a new screening approach to trace DNA recovery techniques to yield a higher quantity of trace DNA from larger items of evidence. It takes the path of visualizing trace DNA on items of evidence with potential DNA so analysts can swab a more localized area rather than attempting to recover trace DNA through the general swabbing technique currently used for trace DNA recovery. The first and second parts consisted of observing trace DNA interaction with Diamond Dye on porous and non-porous surfaces.

The third part involved applying the Diamond Dye solution by spraying it onto …

Serviceability Analysis And Feasibility Study Of Rooftop Pv System On Commercial Buildings In New York City, Daniel A. Shedo

Master's Theses

Concrete Masonry Unit (CMU) blocks (Ballasts) to counterbalance an uplift wind pressure on Photovoltaic (PV) panels have been used widely. In contrast to mechanically attaching PV panels through penetration of a roof slab, the use of CMU blocks is preferred by many building owners, as penetrating and attaching the panels to a roof slab will pose a serious threat to the warranty of roof membranes, which typically last for 30 years. On the other hand, placing CMU blocks along with PV panels and other system components on a rooftop slab adds additional dead load, which may raise a concern regarding …

Evaluation Of Raman Microspectroscopy And Hyperspectral Imaging As A Screening Tool To Determine Optimal Sampling Sites For Dna Recovery From Human Skeletal Remains, Kathleen M. Smith

Master's Theses

Numerous challenges exist with forensic genetic testing of human skeletal remains due to diagenesis patterns in bone microstructure, DNA degradation, and the presence of PCR inhibitors. Diagenesis is the microscopic breakdown of the bone matrix, which consists primarily of mineralized calcium hydroxyapatite and collagen. The process of diagenesis occurs in a heterogeneous, non-uniform manner along the diaphysis of a long bone, and determining the region with the most intact bone microstructure is not possible with the naked eye. Therefore, taking cuttings from the diaphysis for DNA testing is somewhat of a “blind” process, and decades of research and casework have …

Post Pandemic Cyberbiosecurity Threats From Terrorist Groups, Haley D. Dodge

Master's Theses

The research in this thesis explored the research question: Are United States (US) health systems accessible to cyber-bio terrorist attacks post-pandemic, within the context of the emerging discipline of cyberbiosecurity? Key findings of the analysis demonstrated how US health systems are more accessible to cyber-bio terrorist attacks specifically from cyber hacking groups based on the increasing sophistication of their cyber capabilities and the lack of cyber protection for biological systems. The concept of cyberbiosecurity was first introduced in 2018 by researchers exploring the converging threat landscape of the cyber and biology domains. As biology is growing more dependent upon vulnerable …

Virtual Teams During Covid-19: A Study On Group Perceptions, Emergent States, And Outcomes, Thomas Montagna

Master's Theses

Due to the COVID‐19 pandemic, university students were forced to transition to emergency remote learning that, for many, required an abrupt shift from traditional face-to face instruction. The current study leveraged the unique opportunity provided by the change in communication modalities to compare pre and post pandemic perceptions of teamwork. Using the input-mediator-output-input (IMOI) framework, this study sought to discover how group processes, emergent states, and outcomes differed for face-to-face and virtual group work. As part of a retrospective pretest design, a convenience sample of fifty-two graduate students from the University of New Haven completed a single survey that asked …

Mining Bitcoin To Avoid Sanctions, Tyler C. Lubin

Master's Theses

Though the world’s first cryptocurrency, Bitcoin, was introduced over a decade ago, it was not until recently that it became a mainstream subject. While cryptocurrencies offer many advantages, a potential downside for governments, is that no central bank controls the monetary policy and new coins can be mined by anyone anywhere in the world. Governments have always been deeply involved with how a their countries’ currency is ran and the policies they create are meant to keep a currencies’ value stable and make sure other factors like inflation is under control. Even though as of 2021, there were well over …

The Affect Of Globalization On Terrorism, Philip R. Passante

Master's Theses

This thesis proposal will dive into the concept of terrorism and how it is an act of force and has proven to be detrimental to the modern world. In addition, this thesis will analyze the concept of terrorism as well as the rationale behind it. It is important to understand and study this as terrorism is a complex entity made up of different themes. The concentration of this thesis will highlight how globalization has affected the phenomena of terrorism in the past, present, and ultimately the future. Globalization and terrorism have a relationship that many scholars and researchers have noticed. …

Effects Of Bacterial Metabolites In Conditioned Media On Colon Cancer Proliferation, Hunter Panier

Master's Theses

Cancer is the second leading cause of death in the United States with colorectal cancer (CRC) being the third most common type. Available treatments include a combination of surgery and chemotherapy but have debilitating side effects. These also have limited effectiveness in some cases, creating the need for additional treatment options, or supplementary treatments to increase their effectiveness. This is leading scientists to consider the microbiome to fix this shortcoming. Current research is focusing on the microbiome and its interactions with certain diseases, which could lead to pro- or prebiotic therapies. This work aims to establish specific bacterial species can …

Using Zebrafish As A Model System For Studying The Autism Risk Gene Adnp In Early Embryonic Development, William Theune

Master's Theses

Autism Spectrum Disorders (ASD) are a group of debilitating neurodevelopmental disorders, estimated to affect 1 in 54 children. Despite the identification of many autism-risk genes, the underlying mechanisms for ASD remain unclear. One of the most common forms of ASD is associated with de novo mutations in the ADNP gene (Activity-Dependent Neuroprotector Homeobox; accounting for 0.17% of ASD individuals). Termed ADNP syndrome, this disorder is characterized by intellectual disability, facial dysmorphia, and is comorbid with multiple organ system deficits. We set out to use zebrafish as a model organism to gain mechanistic insights into ADNP function. Zebrafish have the advantage …

Correlation Between Tooth Root Translucency, Crystallinity, And Dna Preservation In Teeth For Unidentified Human Remains (Uhr) Investigations, Paul Yount

Master's Theses

Endogenous genetic material protected by the rigid, mineralized hard tissues of bones and teeth is often targeted for forensic DNA testing in missing persons and unidentified human remains (UHR) investigations. Although standard approaches have narrowed sample selection to a few optimal skeletal elements (i.e., weight-bearing long bones, teeth), subsampling and decisions beyond this can be challenging due to the non-uniform, heterogeneous pattern of postmortem diagenesis. One particular component of skeletal microstructure — the inorganic mineral matrix [hydroxyapatite (HAp), Ca10(PO4)6(OH)2] — is purported to play a major role in DNA preservation. The potential correlation between molecular changes to skeletal microstructure and …

Human Trafficking And The Media, Samantha N. Blum

Master's Theses

This paper focuses on how the media can affect the publics knowledge about human trafficking. Specific attention is paid to what human trafficking is and what the different types of criteria that need to be met are. Of the criteria that is met, the paper looks at the overlapping of requirements between human trafficking and other offenses. More importantly throughout the paper is analyzations on police officers’ beliefs about knowing what human trafficking is, what still needs to be done, and their stance on the current definition. The research presented demonstrates the need for more positive psychological approaches when talking …

Operational Decision-Making In Healthcare Using Control Charts, Rohan More

Master's Theses

The primary objective of this thesis was to design a framework supplemented with guidelines for the healthcare managers to select an appropriate type of control chart for operational decision-making. A systematic literature review was conducted to gauge the extent to which control charts were being used in a healthcare setting for clinical decision making and operational decision-making purposes. The findings showed that the application of control charts was almost equal for the clinical decision-making sector and the operational decision-making sector. On further analysis, the ability of control charts to function as a standalone tool was affirmed by the vast majority …

Nondestructive Evaluation (Nde) Of Additively Manufactured Metal (Amm) Parts Using Ultrasonic Testing (Ut), Austin M. Thomas

Master's Theses

Additive manufacturing is a category of emerging manufacturing processes that have applications in creating metal components with high value and complexity. The adoption of these parts is limited by the lack of fully developed nondestructive techniques for identifying internal defects. The use of ultrasonic testing for detecting and measuring internal features in additively manufactured metal parts is investigated. A low-cost ultrasonic immersion testing system was designed, constructed, and validated for the inspection of an additively manufactured titanium specimen with artificial defects as well as other metal artifacts. An ultrasound calibration block was additively manufactured from stainless steel type 316L and …

Adaptive Discounting In Reinforcement Learning, Milan Zinzuvadiya

Master's Theses

In Markov Decision Process (MDP) models of sequential decision-making, it is common practice to account for temporal discounting by incorporating a constant discount factor. While the effectiveness of fixed-rate discounting in various Reinforcement Learning (RL) settings is well-established, the efficiency of this scheme has been questioned in recent studies. Another notable shortcoming of fixed-rate discounting stems from abstracting away the experiential information of the agent, which is shown to be a significant component of delay discounting in human cognition. To address this issue, this thesis proposes a novel method for adaptive discounting entitled State-wise Adaptive Discounting from Experience (SADE). This …

Emergency Management Plan To Increase Resilience In Transportation Sector Vehicles To An Emp Attack, Julian A. Lorusso

Master's Theses

A vulnerability exists in the U.S. to an attack from a nuclear weapon of mass destruction (WMD) optimized to generate an electromagnetic pulse (EMP) with potential for widespread damage to electrical components in the critical infrastructure including non-military (non-MIL) transportation sector vehicles. The purpose of this study was to develop a plan on how hazard risks from an EMP attack can be better understood for modern-day, “electronics-heavy”, transportation sector vehicles leading to affordable mitigation countermeasures that could be implemented as part of an emergency management plan. The FY2020 National Defense Authorization Act (NDAA) and preceding executive order signed by the …

Solar Pv Feasibility Study On Higher Education Institutions In Connecticut, Sai Pujitha Karanam

Master's Theses

One of the most common issue in Connecticut (CT) is the high electricity rates. CT stands among the top five states for its high electric rates due to limitation in transmission facilities and storage of natural gas. Education institutions serve as good places to install photovoltaic systems as they have a large number of buildings available. Photovoltaic systems are a growing alternative energy source that reduces the electricity demand and hence higher education institutions should start implementing these technologies to reduce the burden of paying more for electricity bills.

The primary objective of the study was to analyze the economic …

Development Of A Nomogram To Predict The Maximum Contact Stress Between A Bridge I-Girder And A Support Roller, Thanin Chanmalai

Master's Theses

The incremental launching method (ILM) is one of the methods of bridge construction located in environmentally sensitive areas. During the bridge launching, there are significant contact stress issues at the contact regions between the launching system and the steel bridge girders. The Iowa River Bridge (IRB) is a case study of bridge construction that used the ILM during a steel I-girders installation. Contact stress can cause severe defects during launch, which can occur within the material where the material could be damaged.

Hertz contact theory is applied for calculating contact stress between two solid surfaces, which is initially derived from …

The Use Of Low-Cost Sensors And A Convolutional Neural Network To Detect And Classify Mini-Drones, Austin Florio

Master's Theses

The increasing commercial availability of mini-drones and quadrotors has led to their greater usage, highlighting the need for detection and classification systems to ensure safe operation. Instances of drones causing serious complications since 2019 alone include shutting down airports [1-2], spying on individuals [3-4], and smuggling drugs and prohibited items across borders and into prisons [5-6]. Some regulatory measures have been taken, such as registration of drones above a specific size and the establishment of no-fly zones in sensitive areas such as airports, military bases, and national parks. While commercial systems exist to detect drones [7-8], they are expensive, unreliable, …

Non-Pll Direct Power Control For A Single-Phase Grid-Connected Three-Level Inverter, King Ademola Adebo

Master's Theses

The growing demand for clean, reliable renewable energy generation has led to the widespread adoption of solar energy as a source of electricity. Technological advancement aiding to reduce the cost of solar photovoltaic (PV) panels, as well as improvement in power electronics and control strategies for solar PV systems have also contributed to the growing popularity. For grid-connected solar systems to adequately meet future demand and grid requirements, the system must be reliable, and not affected by instability or distortions on the power grid.

In this thesis, a control strategy for single-phase grid-connected inverters that can synchronize to the grid …

Dewatering Of Chlorella Through Carbon Dioxide Hydrate Formation For Biofuel Production, Charles Dow

Master's Theses

Renewable energy alternatives are currently of interest to meet ever-growing energy demands due to fossil fuel depletion and climate change. Biofuels, an alternative source, can be made from a range of organic matter. One option is algae, which can be grown without impacting food production and in a variety of conditions, however, the feasibility of converting algae into biofuel is of concern. Dewatering algae is a critical step in the process to make oil extraction more efficient. This study utilizes carbon dioxide clathrate hydrates as a novel process to dewater water saturated algae solutions. Clathrate hydrates are crystalline solids formed …

The Development And Evaluation Of A New Analytical Model For The Characterization Of Friction Induced Disc Brake Vibration, Michael Vladimirov

Master's Theses

This research proposes a new method of modeling vibration of disc brake systems. This modeling method treats the brake pads of a disc braking system as lumped spring-mass-damper subsystems and the disc as a continuous bar. This modeling concept increases both the ease of analytical expression and the insight provided into the behavior of the real-world systems. This paper describes the analytical expression of this model and its implementation in Matlab. A parameter variation study yielded results that agree with existing research, which serves to validate the fundamental principles of this proposed modeling method.

Investigating The Role Of The 5’Utr Region Of Tmev In Viral Myocarditis, Maryam Alqahtani

Master's Theses

Viral myocarditis is described as the inflammation of the heart muscle, and it is a common condition that can affect the heart. It is estimated that myocarditis causes 1.5 million deaths annually. In mice, Theiler’s encephalomyelitis virus (TMEV) is a common cause of myocarditis. This non-attenuated virus can be used in a cell culture model system to study viral replication and persistence. These processes have been linked to the severity of the heart damage, which in most clinical scenarios, can lead to dilated cardiomyopathy. The 5’ untranslated region (5‘UTR) found in the viral genome of TMEV is well known to …

Machine Learning Applications To Predict Road Crash And Soccer Game Outcomes, Lu Bai

Master's Theses

Machine learning has become a cutting-edge and widely studied data science field of study in recent years across many industries and disciplines. In this thesis, two problems (1- crash severity prediction, 2- soccer game outcome prediction.) were investigated by using a set of machine learning approaches, namely: Ridge regression, Lasso Regression, Support Vector Machine (SVM), Neural Network (NN), Random Forest (RF).

The first study is focused on investigating the critical factors affecting crash severity on a comprehensive time-series state-wide traffic crash data. The dataset covers crashes occurred in the state of Connecticut between 1995 and 2014. Traffic crashes are an …

Measurement Of Polishing Rate As A Function Of Pad-Independent Abrasive Friction For Chemical Mechanical Polishing, Christopher Mcgowan

Master's Theses

As features on integrated circuits continue to grow smaller, they become more susceptible to damage from sequential planarization steps during fabrication. As planarization (known as chemical mechanical planarization, or simply CMP) is preformed multiple times and on every stage of fabrication, potential damage from it represents a significant financial risk, motivating a more fundamental understanding of the material removal process. CMP typically consists of a stiff polymer pad being used to bring a chemically active colloidal suspension of nanoscale particles into contact and relative motion with the substrate to be polished. For narrow sets of conditions, CMP is typically seen …

Application Of Elastodynamic Finite Integration Technique (Efit) To Three-Dimensional Wave Propagation And Scattering In Arbitrary Geometries, Sean M. Raley

Master's Theses

Over several decades, railroad Ultrasonic Testing (UT) industry techniques have primarily been developed through simple analytical modelling and experimental approaches. However, with present-day computational capabilities, we can use numerical techniques like the Elastodynamic Finite Integration Technique (EFIT) to fine-tune systems for complex applications before the fabrication process begins. EFIT is well-established as a useful method in numerical analysis of ultrasonic wave propagation with distinct advantages over the Finite Difference Time Domain method. Several software packages exist that use EFIT as the primary method for simulating the behavior of ultrasonic waves over time in 2 or 3 dimensions, but none of …

Direct Assessment Of Entrepreneurial Minded Learning Through Integrated E-Learning Modules, Aadtiyasinh Rana

Master's Theses

Entrepreneurial Minded Learning (EML) has a significant emphasis in engineering education

today. Several approaches have been used to assess the impact of various EML approaches. Many indirect assessment techniques have been used and a few direct assessment techniques have been developed. The work presented in this thesis investigates the effectiveness of two specific measurement methods to quantify entrepreneurial minded learning in students.

The University of New Haven has adopted the approach of integrating e-learning modules on entrepreneurial topics and related contextual activities into courses as the primary approach of developing an entrepreneurial mindset (EM) in students. This study focuses on …