Digital Commons Network^™

Data Augmentation For Automatic Speech Recognition For Low Resource Languages, Ronit Damania

Theses

In this thesis, we explore several novel data augmentation methods for improving the performance of automatic speech recognition (ASR) on low-resource languages. Using a 100-hour subset of English LibriSpeech to simulate a low-resource setting, we compare the well-known SpecAugment augmentation approach to these new methods, along with several other competitive baselines. We then apply the most promising combinations of models and augmentation methods to three genuinely under-resourced languages using the 40-hour Gujarati, Tamil, Telugu datasets from the 2021 Interspeech Low Resource Automatic Speech Recognition Challenge for Indian Languages. Our data augmentation approaches, coupled with state-of-the-art acoustic model architectures and language …

Advanced Photovoltaic Devices Enabled By Lattice-Mismatched Epitaxy, Anastasiia Fedorenko

Theses

Thin-film III-V semiconductor-based photovoltaic (PV) devices, whose light conversion efficiency is primarily limited by the minority carrier lifetimes, are commonly designed to minimize the formation of crystalline defects (threading dislocations or, in extreme cases, fractures) that can occur, in particular, due to a mismatch in lattice constants of the epitaxial substrate and of the active film. At the same time, heteroepitaxy using Si or metal foils instead of costly III-V substrates is a pathway to enabling low-cost thin-film III-V-based PV and associated devices, yet it requires to either use metamorphic buffers or lateral confinement either by substrate patterning or by …

The Public Poster: An Exploration Of Storytelling In Poster Design, Elizabeth Hiler

Theses

Research suggests that it is incredibly difficult for a person to change their mind. Confirmation bias and echo chambers are just a few of the reasons people do not give themselves the opportunity to explore new stories, ideas, beliefs. It is now our challenge to connect with people in unconventional ways and explore storytelling in new spaces to give difficult topics more accessibility to public discourse. The Public Protest Poster can be found at the start of most movements for social and political change by creating a simplified statement with a strong graphic for instant impact. Yet, protest posters rely …

Anchor Self-Calibrating Schemes For Uwb Based Indoor Localization, Jonathan Pereira

Theses

Traditional indoor localization techniques that use Received Signal Strength or Inertial Measurement Units for dead-reckoning suffer from signal attenuation and sensor drift, resulting in inaccurate position estimates. Newly available Ultra-Wideband radio modules can measure distances at a centimeter-level accuracy while mitigating the effects of multipath propagation due to their very fine time resolution. Known locations of fixed anchor nodes are required to determine the position of tag nodes within an indoor environment. For a large system consisting of several anchor nodes spanning a wide area, physically mapping out the locations of each anchor node is a tedious task and thus …

Sensory Evaluation Of Camel Milk, Reem Amer Al Kaabi

Theses

Camel milk is one of the most important sources of nutrients for humans in numerous arid and semiarid environments. Consumer acceptability and sensory analysis are decisive for the commercialization of camel milk. It is essential to understand the sensory qualities of camel milk because of its unfamiliarity and its typical sensory profile, which is different from that of bovine milk. This study aimed to evaluate a trained panel qualitative description of sensory characteristics as well as consumer acceptability and attitude towards pasteurized non-flavoured, flavoured, and camel milk powders. In the consumer acceptability test, samples were evaluated based on acceptability with …

Assessment Of Heavy Metals In Sharks From The Arabian Gulf Waters, The United Arab Emirates, Noor Alali

Theses

Metals occur naturally in the environment however anthropogenic activities have contributed to their increase in the marine ecosystem. As elements have the ability to bioaccumulate, biomagnify and transfer between biological compartments throughout the food web, they pose a great threat to living biota. The characteristics of the Arabian Gulf make it a harsh environment for marine species especially when multiple stressors are acting together. Rhizoprionodon acutus (milk shark) and Carcharhinus sorrah (spot-tail shark) are essential compartments of the Arabian Gulf ecosystem. As they are found up in the food chain and considered a predator species they are under the threat …

Assessing The Impacts Of Sea Level Rise On Land-Use Across The North-Eastern Parts Of The Uae Coastal Areas Using Remote Sensing Technology, Khawla Ali Mohammed Albedwawi

Theses

The consequences of global warming and climate change would result in a considerable rise in sea level. Other larger consequences on coastal lands, agriculture, buildings, and facilities are expected. The goal of this study is to assess the effects of Sea-Level Rise (SLR) on various land uses in the UAE's North-Eastern coastal districts (Fujairah and Kalba cities). Four SLR scenarios will be developed through the QGIS platform and the Landsat images that have been acquired from the USGS Earth Explorer. The area will be observed over 20 years (2000 – 2020). The second goal of this study is to develop …

Role Of Limonene In An Experimental Model Of Rotenone Induced Parkinson’S Disease, Lujain Mohamad Bader Eddin

Theses

Parkinson's disease (PD) is one of the prevalent neurodegenerative diseases in elderly population. The symptoms of PD often begin with motor and cognitive impairment that are attributed to the dopaminergic neurons degeneration. Rotenone (ROT) is a naturally derived pesticide that is used in agriculture to control pests. It is a neurotoxin well-established for use in resembling PD symptoms in research. Limonene (LMN) is a plant derived monoterpene extracted from citrus peel with a wide range of therapeutic effects. Due to the shortage in available therapeutic agents that can cure or halt the progressive degeneration of PD, the main aim of …

The Red Palm Weevil In The Uae: Morphological Diversity And Rnai-Mediated Gene Silencing Of Two Cuticle-Related Genes, Safa Hashem Mohammed Musaed

Theses

Red Palm Weevil (RPW), Rhynchophorus ferrugineus (Coleoptera: Curculionidae), threatens palm trees worldwide. A better understanding of this insect can help with designing an adequate management strategy. This study aimed to a better understand the morphological diversity of RPW and examined RNAi-mediated gene silencing of two cuticle-related genes, vestigial (vg) gene, and Laccase (Lac2) gene by injecting the last larval stage with double-stranded RNA (dsRNA). For the morphological diversity study, adults of RPW were collected and classified by their prothoracic spots. Additional morphological characters were measured such as Pronotum Length (PL), Pronotum Width (PW), Elytra Length (EL), Elytra Width (EW), and …

Paid Time Off And Work-Life Balance In An Ambulatory Surgical Center, Elizabeth S. Harmon

Theses

To investigate what was considered important to the staff regarding the current paid time off method used in an ambulatory surgical center with the purpose of discovering what works well for an acceptable work-life balance. Considerable research has shown that an adequate work-life balance in the nursing profession is necessary for job satisfaction and retention. The method to request paid time off is often cumbersome and unreliable, resulting in frustration of the nursing staff. Alternatives for granting paid time off requests in an outpatient facility have not been investigated. A non-experimental, two-step study was conducted using qualitative and quantitative methods.

The Improvement Of The Healthcare Industry In Dubai By Using Robotic Nurses During Covid-19, Ahlam Hasan Alhaili

Theses

The project aims to highlight the necessity to improve the Dubai healthcare industry that witnesses limited smart responses during the global pandemic of Covid-19. Mainly by suggesting a solution to overcome problems like nursing staff shortage in Dubai hospitals during Covid-19, which negatively affects the healthcare system's resiliency to a health crisis. The project suggests the smart approach of using robotic nurses to overcome this problem and other issues related to nursing staff, like minimizing direct contact with patients, focusing more on the more complex tasks, leaving more straightforward tasks for robots, and provide the technology that can increase their …

The Importance Of Shifting From Massive To Sustainable Tourism Model: The Case Study Of The City Of Dubrovnik, Niko Katusic

Theses

Tourism is currently one of the largest economical income generators for Croatia and especially for the city of Dubrovnik. Desired worldwide for its economic benefits tourism is going to double during the next 20 years. Considering mass tourism as the main definition for tourism in 21 century that cannot be neglected by current efforts to implement sustainable tourism, this paper draws attention to improved satisfaction that sustainable tourism can provide to locals and tourists operating in the city of Dubrovnik. The question of satisfaction level for stakeholders in tourism destinations is connected to the psychological characteristics and motivation of tourists …

Tuberculosis Screening And Education In The Urban Public School District, Nikolaos S. Moraros

Theses

Tuberculosis (TB) is the world's deadliest curable communicable infectious disease. The eradication of TB is a significantly important intractable global public health challenge for health agencies at all levels. Global migration, cultural-socioeconomic factors and increase of multidrug-resistance tuberculosis (MDR-TB) affect the epidemiology of TB in the United States and other countries worldwide. Studies have shown that increase in TB knowledge and understanding contributes to early TB screenings/diagnosis, interventions and treatments, result in reducing MDR-TB, rates of TB transmissions, relapse, morbidity and mortality. The purpose of this project is: (1) to develop a TB screening risk assessment protocol for the Urban …

An Ethnographic Study Of Pre-Graduate Precepted Nursing Student Clinical Placements In Long-Term Care Homes, Fran M. Meloche

Theses

Long-Term Care (LTC) home recruitment challenges and nursing student disinterest in such clinical placements and careers, underscore this study's urgent need. This qualitative focused ethnography explored preceptor, faculty advisor, and pre-graduate student beliefs, values, and practices contributing to positive LTC home clinical placements.

Multivariate Statistical Analysis Applied To The Forensic Analysis Of Synthetic Fibers, Abdulrahman Aljanaahi

Theses

Textile fibers obtained from crime scenes can provide trace evidence to help solve criminal cases through forensic science. Examining the samples involves the use of different analytical procedures to determine associations between different fabric fragments. The current study explored multivariate statistical methods applied in synthetic fiber forensic science comparisons. The literature review of the current research identified various multivariate approaches such as Principal Component Analysis (PCA) and Partial Least Square Discriminant Analysis (PLS-DA) to analyze spectroscopic and chromatographic data. The capstone project used Fourier Transform Infrared (FT-IR) Spectroscopy instrumental methods for the analysis of standard synthetic fibers. Afterwards, multivariate data …

Wave Optics In Scanning Electron Microscopy, Surya Kamal

Theses

Better quality imaging is often needed for all optical instruments including the scanning electron microscope (SEM). Inside the SEM, an electron beam is generated by applying a voltage to the electron gun. The electron beam propagates through the SEM column and illuminates the specimen with a small probe. Our research is oriented towards the end goal of obtaining better images by modeling the SEM column which contains the lens system needed for probe formation. This probe which scans the specimen to produce the final image is one of the pivotal factors which determines the fundamental resolution of a SEM. We …

Comparing Adobe’S Unsharp Masks And High-Pass Filters In Photoshop Using The Visual Information Fidelity Metric, Nhung T. Pham

Theses

The present study examines image sharpening techniques quantitatively. A technique known as unsharp masking has been the preferred image sharpening technique for imaging professionals for many years. More recently, another professional-level sharpening solution has been introduced, namely, the high-pass filter technique of image sharpening. An extensive review of the literature revealed no purely quantitative studies that compared these techniques. The present research compares unsharp masking (USM) and high-pass filter (HPF) sharpening using an image quality metric known as Visual Information Fidelity (VIF). Prior researchers have used VIF data in research aimed at improving the USM sharpening technique. The present study …

Noninvasive Electrocardiographic Imaging (Ecgi) To Guide Catheter Ablation Of Scar-Related Ventricular Tachycardia, Omar Ahmed Gharbia

Theses

Scar-related VT is caused by local \textit{short circuits} of electrical propagation formed by slow-conducting channels of surviving tissue within a scar. Catheter ablation treats scar-related VT by destroying the critical channel of surviving tissues. Its efficacy heavily relies on how well the channels critical to the formation of VT circuits can be localized. Unfortunately, in current practice, this relies on invasive catheter mapping that falls short in several critical aspects: up to 90$\%$ of the VT circuits are too short-lived to be mapped, the mapping cannot be done non-invasively prior to the ablation procedure, and the mapping is restricted to …

Environmental Assessment Of The Impact Of Land-Based Discharges On Marine Water And Sediment Quality In Dubai, Uae, Ayman Fathy Halawa

Theses

The current seawater and Creek – Canal waterway in the Emirate of Dubai, UAE, is under tremendous pressure because of continuous urban water discharges from land-based sources. Therefore, the impact of urban water discharges on marine water and sediment quality in the Emirate requires a thorough assessment. The main objective of this study is to assess the impacts of effluent discharges on the quality of water and sediment in the open sea and Dubai Creek. The land-based sources include the power and desalination plants, industrial sector, sewage treatment plant, and stormwater runoff. To achieve the stated objective, relevant data on …

منھج الرؤى السلوكیة في السیاسات العامة ومدى إمكانية تطبيقه في المؤسسات الحكومية في دولة الامارات العربیة المتحدة, خلیفة عبد لله علي الربیعي

Theses

انطلقت ھذه الدراسة من إشكالیة ندرة الدراسات المحلیة عن منھجیة الرؤى السلوكیة كإحدى الأدوات الجديدة للسياسات العامة، والتي تكمل الأدوات والمنھجیة التقلیدیة للسياسات العامة والتي تتميز بإمكانية اختبار السیاسات العامة قبل تطبیقھا، ومدى إمكانية استخدامها في المؤسسات الحكومية في دولة الامارات العربیة المتحدة.

فقامت الدراسة بدایة بتناول نشأة الإدارة العامة ونشأة السیاسات العامة والارتباط الوثيق والمتكامل بین المفهومين. بعد ذلك ناقشت الرسالة نشأة الإدارة العامة وتطورها في دولة الامارات ثم تطرقت بعد ذلك الى مناقشة أنواع مؤسسات الإدارة العامة المعنية بصنع السیاسات العامة في دولة الامارات العربیة المتحدة، ثم تناولت نشأة مفھوم الرؤى السلوكیة وتطوره خلال عقد من الزمن، وكذلك …

Impact Of Sodium Dichloroacetate Alone And In Combination Therapies On Lung Tumor Growth And Metastasis, Aya Mudhafar A. Al-Azawi

Theses

Lung cancer is the second most common form of cancer with the highest mortality rate worldwide in 2020 despite the advances in targeted- and immuno-therapies. Metabolic reprogramming has been recognized as an essential emerging cancer hallmark in which altered metabolic pathways represent an attractive therapeutic target. Sodium Dichloroacetate (DCA), a pyruvate dehydrogenase kinase (PDK) inhibitor, effect has been investigated in various tumors. Building on the already published data, this pre-clinical study aims to explore the anticancer potential of DCA in lung cancer alone and in combination with chemo- and targeted therapies using two non-small cell lung cancer (NSCLC) cell lines …

The Impact Of Readmission On Family Caregivers Of Children Following Ventricular Peritoneal Shunt Surgery, Mary Uwhuba

Theses

Family caregivers work tirelessly to ensure their loved ones don't need to return to the hospital after discharge. This study will examine the impact of readmission on family caregivers of children who have had ventricular peritoneal shunt (VPS) surgery and been readmitted by looking at the economic, social, familial, and personal strains of caregiving. This study is a descriptive study. The Impact on Family Scale survey (Stein & Jessop, 1985) was used to judge if family caregivers were affected by child's readmission.

Drug Releasing Hydrogels For Opioid Use Disorder, Kaytlyn M. Crowe

Theses

Ease of access to prescription opioids and the strength of synthetic opioids have contributed to the rise in over use disorders, overdose, and death rates during the opioid epidemic. The current overdose standard of care, rescue NLX (NLX), is a competitive antagonist to the μ-opioid receptor but has a relatively short period of action compared to opioid agonists, especially synthetic agonists. Rises in the abuse of these synthetic and semi-synthetic agents in recent years have shown the weaknesses of rescue NLX, as it can leave overdose patients vulnerable to renarcotization and precipitated withdrawal. To prevent both from occurring, we developed …

Subgroups Of Patients Undergoing Chemotherapy With Distinct Cognitive Fatigue And Evening Physical Fatigue Profiles, Lisa Morse

Theses

Purpose was to model cognitive fatigue and evening physical fatigue together to determine subgroups of patients with distinct cognitive fatigue AND evening physical fatigue profiles. Once these profiles were identified, differences among the subgroups in demographic and clinical characteristics, co-occurring symptoms, and quality of life outcomes were evaluated.

The Use Of Machine Learning In Assessing Suicide Risk: A Meta-Analysis, Rachael Kang

Theses

Suicide is a devastating act in which a person takes their own life. Decades of research into suicide have identified a myriad of risk factors that have been used to create assessments of suicide risk and suicidality. However, more recent research has suggested that these identified risk factors may have no better predictive ability than chance, perhaps because suicide is actually a multi-dimensional, multi-faceted construct that has been viewed too simplistically for prediction’s sake. To try and better appreciate the complex nature of suicide while also increasing prediction accuracy, researchers have turned to machine learning. This study sought to meta-analyze …

A Cost Analysis And Policy Review Of Digestate When Deemed A Waste Product And A Fertilizer., Sarah Chandrika Cannon

Theses

Food waste is a multifaceted issue that has proposed solutions as complex as the problem itself. New York State recently announced a food waste ban, effective January of 2020, that will require large scale food waste producers to manage the waste through alternative methods as opposed to disposal in a landfill. One of those methods is through Anaerobic Digestion, a process in which organic matter chemically reacts with bacteria to produce a biofuel along with an associated byproduct, namely digestate. The biofuel in most cases is used to produce electricity to feed back to the grid acting as a net …

Ageing Performance Of Biodegradable Pla For Durable Applications, Rohan Pujari

Theses

The durability of 2 commercially available injection mold grades and one extrusion grade of polylactic acid (PLA) was assessed. Here, the materials were exposed to elevated temperatures/humidity for a period of several weeks. Moisture absorption, molecular weight change, mechanical properties, crystallinity changes, and microscopic imaging were all monitored at regular intervals throughout the course of the combined heat and humidity ageing study. The conditions for the ageing study were set at 60°C and 45% relative humidity and all three PLA grades showed a significant increase in crystallinity and conversely reduced mechanical performance over the 68-day ageing period. Microscopic images of …

Examining Own-Race Bias: A Cooperation And Memory Study Using Diverse Emojis, Jillian Franks

Theses

Other-race-effect or own-race bias is a well-documented phenomenon in memory. Findings suggest that humans are better at recognizing and remembering faces of their own race than other races. Previous research suggests that these results are due to a lack of interracial contact or exposure to other racial groups. Evidence from previous studies has demonstrated that individuals process own-race faces differently than other-race faces, paying more attention to more salient features that become better encoded. While there is empirical support for both hypotheses, it has yet to be studied if the other-race effect for memory extends to representational human faces, for …

Simulation Analysis Of Mixed Bulk And Rack Warehouse Systems, Rukshar Bhisti

Theses

With the growth of the supply chain and increased customer demand, warehouse operation has become very important. One of the critical functions of warehouse operation is to have a warehouse layout such that the day-to-day operations enable on-time delivery. Poor warehouse design can lead to ineffective warehouse space utilization and incur the cost associated with inefficient operations. The purpose of this study is to develop an analysis tool that enables companies to identify the appropriate mix of bulk and rack storage locations to utilize warehouse space effectively. A simulation-based methodology is used to determine the optimal mix of racks and …

Barriers To Using Certified Interpreters In The Hospital Setting: The Hispanic Bilingual Nurse Experience, Misara S. Bambao

Theses

The law requires that certified interpreters are available to translate information to patients regarding their healthcare. Due to perceived barrier of time, Hispanic bilingual nurses are regularly called upon to fill this gap in communication. This study investigates the Hispanic bilingual nurse's perspective on being pulled from their primary assignment to translate for patients other than their own. The purpose of this study was to understand Hispanic bilingual nurses' perceptions and experiences translating at the bedside.