Digital Commons Network^™

Analysis Of Container Throughput: Demand Forecast And Seaport Competitiveness Assessment, Hussain Talat Sulaimani

Dissertations

Seaports play a crucial role in the container industry, where they act as important nodes in the transport chain to facilitate international trade. In a competitive market, port capacity plays a significant role in defining its competitive position to attract demand and avoid congestion. Failing to provide suitable capacity results in the loss of market share. Therefore, port decision-makers face the challenge of maintaining and developing suitable port facilities to provide efficient services to port users. One of the aspects that decision-makers consider in the planning and development process is analyzing container demand. The analysis of container demand can be …

Designing Collaborative Lifelogging To Facilitate Learning In Collaborative Physical-Recreation Communities, Sayed Mousa Ahmadi Olounabadi

Dissertations

Since the 1940s, researchers have envisioned lifelogging as the systematic capture and utilization of lived experiences for augmenting learning, performance, and community Unfortunately, this vision was never actualized since few, if any, systems support lifelogging in the term's original sense. Technologies that emerged through the Quantified-Self (QS) movement allowed users to monitor and track almost every life aspect. However, the decontextualized self-tracking data QS systems produced are unsuitable for supporting learning and community engagement, and therefore have not made lifelogging a reality yet. Central to this dissertation is understanding how to augment learning and community through lifelogging. This is particularly …

Essays On Health Care Quality: Timeliness, Equity, And Efficiency, Abubakar-Sadiq Bouda Abdulai

Dissertations

According to the National Academy of Medicine (NAM) (formerly called the Institute of Medicine), a quality health care system embodies six attributes: timeliness, equity, safety, efficiency, effectiveness, and patient-centeredness. Timeliness is to avoid unnecessary delays in care delivery for patients and caregivers; equity is to ensure that the quality of care that patients receive does not vary based on their personal characteristics; safety is to ensure that the care that is intended to help patients does not harm them; efficiency is to avoid waste and optimize resource allocation to improve care delivery; effective care is one that relies on sound …

Reserve Price Optimization In Display Advertising, Achir Kalra

Dissertations

Display advertising is the main type of online advertising, and it comes in the form of banner ads and rich media on publishers' websites. Publishers sell ad impressions, where an impression is one display of an ad in a web page. A common way to sell ad impressions is through real-time bidding (RTB). In 2019, advertisers in the United States spent nearly 60 billion U.S. dollars on programmatic digital display advertising. By 2022, expenditures are expected to increase to nearly 95 billion U.S. dollars. In general, the remaining impressions are sold directly by the publishers. The only way for publishers …

Constructive Solution Methodologies To The Capacitated Newsvendor Problem And Surrogate Extension, Pinyuan Shan

Dissertations

The newsvendor problem is a single-period stochastic model used to determine the order quantity of perishable product that maximizes/minimizes the profit/cost of the vendor under uncertain demand. The goal is to fmd an initial order quantity that can offset the impact of backlog or shortage caused by mismatch between the procurement amount and uncertain demand. If there are multiple products and substitution between them is feasible, overstocking and understocking can be further reduced and hence, the vendor's overall profit is improved compared to the standard problem. When there are one or more resource constraints, such as budget, volume or weight, …

Advances In Deep Learning With Applications To Computer Vision And Astronomy, Zhihang Hu

Dissertations

Deep Learning has spanned a variety of applications in computer vision as well as computational astronomy. These two aspects obtained similar data structure, therefore, their solutions can be transferable between each other. This dissertation look into two video-related tasks in computer vision and propose a novel problem in computational astronomy.

Specifically, acquiring an in-depth understanding of videos has been a cornerstone problem in computer vision. This problem has been studied by various researchers from different perspectives, among which video prediction has attracted much attention. Video prediction aims to generate the pixels of future frames given a sequence of context frames. …

Learning Of Radar System For Target Detection, Wei Jiang

Dissertations

In this dissertation, the problem of data-driven joint design of transmitted waveform and detector in a radar system is addressed. Two novel learning-based approaches to waveform and detector design are proposed based on end-to-end training of the radar system. The first approach consists of alternating supervised training of the detector for a fixed waveform and reinforcement learning of the transmitter for a fixed detector. In the second approach, the transmitter and detector are trained simultaneously. Various operational waveform constraints, such as peak-to-average-power ratio (PAR) and spectral compatibility, are incorporated into the design. Unlike traditional radar design methods that rely on …

Exploring Fused Deposition Modeling (Fdm) Three-Dimensional Printing Tablet Design Options For Pharmaceutical Dosage Forms, Guluzar Gorkem Buyukgoz

Dissertations

This dissertation examines the use of Fused Deposition Modeling (FDM) based three-dimensional (3D) printing approach for developing patient-specific dosage forms and addressing related technical challenges in such drug delivery systems. The first main objective is to explore pharmaceutical tablet design options using novel FDM 3D printing technology as the drug delivery platform such that drug form and tablet properties are tailored by considering patient age-specific formulations and dissolution control. Of the five different design options, two proposed options meet the main objective of providing similar drug release, whereas the popular option of fixed drug concentration but differing tablet size could …

Novel Statistical Modeling Methods For Traffic Video Analysis, Hang Shi

Dissertations

Video analysis is an active and rapidly expanding research area in computer vision and artificial intelligence due to its broad applications in modern society. Many methods have been proposed to analyze the videos, but many challenging factors remain untackled. In this dissertation, four statistical modeling methods are proposed to address some challenging traffic video analysis problems under adverse illumination and weather conditions.

First, a new foreground detection method is presented to detect the foreground objects in videos. A novel Global Foreground Modeling (GFM) method, which estimates a global probability density function for the foreground and applies the Bayes decision rule …

The Effect Of Choice Programs On Student Achievement, David Whitham

Dissertations

Educational choices provide unique learning opportunities for all children to have access to and allow parents to be the decision-makers for their child’s education (Valant & Lincove, 2018). Brown v. Board of Education (1954) of Topeka sparked the creation of choice programs in the United States to end the segregation of students and empower families to be direct stakeholders in their child’s education (Brown v. Board of Education, 1954). This study focused on a school district in the Midwest region of the United States, which investigated the expansion of learning options available to the community. The purpose of this study …

Simulated Clinical Experience: An Investigation Of Emotion Understanding And Management, Neena W. Jones

Dissertations

Many investigators have documented that lack of emotional intelligence (EI) in professional nursing correlates with patient dissatisfaction, negative patient outcomes, and litigation. However, much less information is available to nurse educators for an effective instructional strategy to increase EI skills, specifically emotion understanding and management (the most influential branches of EI) in nursing students. Grounded in the theory of EI and the theory of simulation, the purpose of this quantitative quasi experimental study was to introduce educational technology as a useful strategy for influencing EI in a convenience sample of 88 second semester students in a baccalaureate program. Research questions …

The Impact Of Technology Centered Instruction And Implementation Measures On Student Performance, Daniel Kania

Dissertations

This study was conducted to compare the impact of technology-centered instructional methods on student performance in literacy to the impact of non-digital instructional practices. Additionally, this research was designed to identify specific program implementation measures used during the implementation of the prevailing instructional method and identify what link existed between these measures and the performance of students. The researcher examined quantitative and qualitative data obtained from both public data sources and from a survey administered to teachers in eight school districts in Missouri. The participants responded to questions that provided the researcher with quantitative and qualitative data to be used …

The Marginalization Of Social Studies In Missouri: An Analysis Of Elementary Instructional Time And High School Standardized Assessment Scores, Stephanie Lovette

Dissertations

Social studies education plays a vital role in an evolving American society. Through social studies, students are equipped with skills to become active and informed citizens in a democracy (National Council for Social Studies, 2017a). With the implementation of the No Child Left (NCLB) Act in 2001, educational reforms have increasingly emphasized student performance in mathematics, communication arts, and science (Libresco, 2015). As a result, instructional time has been drastically shifted to these subjects (Heafner & Fitchett, 2015). This mixed-methods study was conducted to explore the impact of NCLB and subsequent federal education policies on the marginalization of social studies …

Assessment Technologies Institute Test Results And Blended Experiences For Senior Community Health Nursing Students, Linda Lacomb-Williams

Dissertations

The purpose of the study was to examine the relationship between senior community health nursing students' ATI test scores and their clinical community health nursing experiences, either in-country or out-of-country. The ATI test results are a reliable predictor of whether the student will pass their nursing board exams (NCLEX-RN). The study also examined whether the two groups of students reported any similarities and differences in their sense of confidence or transcultural self-efficacy and conceptual knowledge and their clinical experiences.

ATI test scores were reviewed for the two groups. Focus groups were held to discuss any similarities or differences in the …

The Use Of Flexible Seating In The Elementary Classroom, Pamela Erin Swofford

Dissertations

The purpose of this study was to examine the use of flexible seating in southwest Missouri classrooms. Four research questions guided the study based on the conceptual framework of Eric Jensen. The work of Jensen (2005) was selected as the conceptual framework due to his focus on the use of movement and how it impacts the brain. The research population consisted of 119 school districts from 25 counties in southwest Missouri. Participants in the study included elementary principals and classroom teachers in the first through fourth grades. Of the participants, 107 teachers completed a survey specific to the use of …

The Association Of Patients' Analgesic Treatment Beliefs And Trade-Offs With Analgesic Adherence Behaviors Among Outpatients With Cancer Pain, William E. Rosa

Dissertations

Pain is one of the most burdensome symptoms for patients with cancer. Per cancer pain guidelines, opioids remain one of the primary modalities for managing moderate to severe cancer pain. Analgesic nonadherence is common among cancer patients despite unmanaged pain symptoms. We investigated how patients prioritized analgesic treatment beliefs for cancer pain and whether those beliefs predicted objective analgesic adherence behaviors.

Utilization Of A Clinical Decision Support System To Increase Chlamydia Screening Rates In Sexually Active Young Women: A Quality Improvement Project, Raine Martin

Dissertations

The objective of this Doctor of Nursing Practice (DNP) scholarly project was to implement an evidence-based intervention, the clinical decision support system (CDSS), and include education to promote increased routine chlamydia screening practices in an outpatient clinic. An additional objective was to assess CDSS usability using the System Usability Scale (SUS) to evaluate for project sustainability. The project design was a quasi-experimental study with post-implementation data collection with a comparison of norms of baseline chlamydia screening from the prior year. The project was completed over eight weeks. The project was implemented at a family health clinic located in a southcentral …

Ensemble Data Fitting For Bathymetric Models Informed By Nominal Data, Samantha Zambo

Dissertations

Due to the difficulty and expense of collecting bathymetric data, modeling is the primary tool to produce detailed maps of the ocean floor. Current modeling practices typically utilize only one interpolator; the industry standard is splines-in-tension.

In this dissertation we introduce a new nominal-informed ensemble interpolator designed to improve modeling accuracy in regions of sparse data. The method is guided by a priori domain knowledge provided by artificially intelligent classifiers. We recast such geomorphological classifications, such as ‘seamount’ or ‘ridge’, as nominal data which we utilize as foundational shapes in an expanded ordinary least squares regression-based algorithm. To our knowledge …

Boosting Degree Attainment: A Mixed Methods Examination Of An Adult Degree Completion Initiative, Hannah Harrison

Dissertations

Higher education has increased its focus to national degree attainment, especially among adults who have some college education (Hardin, 2008; Nettles, 2017). Research from these entities identifies future economic growth and the strength of the United States economy requires a more highly educated society (Carnevale & Rose, 2014). As a result, Federal and institutional initiatives seek ways to increase the retention rates of current students while also incentivizing students to return to school to complete their degrees (Markle, 2015). A review of the related literature identified economic and social benefits exist for individuals who obtain a postsecondary degree (Chan, 2016). …

Doping Of Conjugated Polymers: Preparation, Characterization And Device Fabrication, Kan Tang

Dissertations

Semiconducting conjugated polymers (CPs) as emerging materials for advanced electronic applications such as sensors, OPVs, and OEFTs has become an intriguing research topic in the past decades. It opens a new avenue of “flexible” electronics, which has shown great potential in next-generation electronic devices.

However, due to the nature of CP materials and related solution processing techniques, unlike almost perfectly crystalline silicon materials, CPs in the solid-state often exhibit much lower crystallinity if it is not complete amorphous, which severely hinder the electronic property and optical property of the materials. The crystallinity of CPs in a film is often uniquely …

Identification Of Cultural Differences And Their Effects On International Relations: A Novel Approach, Stephen W. Jones

Dissertations

International Relations suffers from underspecified treatments of culture that risk reifying, essentializing, or ignoring the effects of cultural differences in the conduct of relationships between states. Following a review of the development of the culture concept, this interpretivist, epistemologically critical realist, dissertation introduces intercultural adaptive frameshifting from the intercultural communication literature. To assess whether culture has effect within an epistemic community, four frameworks are evaluated within a non-IR field (global Christian reasoning). Speech act theory is used to assess meaningful affect through illocutionary and/or perlocutionary divergence based on cultural difference.

Following the findings that such cultural differences do in fact …

Photopolymer Networks With Tunable Command Destruct Properties, William Walker

Dissertations

Photoinduced thiol-catalyzed hydrogen abstraction and beta-scission of acyclic benzylidene acetals is demonstrated as a new route to “command-destruct” polymer thermosets. Using this approach, we show that poly(thioether acetal) networks synthesized via thiol-ene photopolymerization rapidly degrade to alkyl benzoate byproducts when triggered with light, transitioning from solid to liquid within seconds. The light-driven construction and destruction processes, accessible via distinct differences in kinetics, are readily amendable for photopatterning, additive/subtractive manufacturing, and wavelength-selective applications.

The first chapter of this dissertation details the development of command-destruct poly(thioether acetal) networks via a previously unexplored mechanism for polymer degradation. The degradation mechanism is confirmed via …

Semantics-Driven Large-Scale 3d Scene Retrieval, Juefei Yuan

Dissertations

No abstract provided.

The Role Of The Msaabcr Operon In Cell Wall Integrity And Programmed Cell Death During Biofilm Development, Bibek G C

Dissertations

Staphylococcus aureus is an important human pathogen in both community and health care settings. Biggest challenges with S. aureus as a pathogen is its ability to acquire antibiotic resistance and produce robust biofilms. In this work, we investigated the nature of the cell wall defect in the msaABCR operon mutant in the Mu50 (VISA) and USA300 LAC methicillin-resistant Staphylococcus aureus (MRSA) strains. Results showed that msaABCR-mutant cells had decreased cell wall thickness and cell wall crosslinking in both strains. These defects are most likely due to increased murein hydrolase activity and/or nonspecific processing of murein hydrolases mediated by increased …

Gender And Cross-Cultural Invariance Of Attitudes Toward Statistics Among Non-Stem Undergraduate Students, Mihili Edirisooriya

Dissertations

Because of the wide usage of statistics in almost every field, many universities have incorporated statistics into their undergraduate and graduate curricula. Students taking statistics have often reported negative experiences and an aversion to statistics. Non-STEM students have often reported negative attitudes toward statistics (Chew & Dillon, 2014; Keeley et al., 2008). Researchers have used qualitative and quantitative approaches to measure attitudes toward statistics. The Survey of Attitudes Toward Statistics-36 (SATS-36) scale has been the most widely accepted measure to investigate attitudes toward statistics. Any psychometrically sound measurement instrument requires invariance across groups in its usage. Otherwise, measurement biases could …

Vision Based Activity Recognition Using Machine Learning And Deep Learning Architecture, Sarbagya Shakya

Dissertations

Human Activity recognition, with wide application in fields like video surveillance, sports, human interaction, elderly care has shown great influence in upbringing the standard of life of people. With the constant development of new architecture, models, and an increase in the computational capability of the system, the adoption of machine learning and deep learning for activity recognition has shown great improvement with high performance in recent years. My research goal in this thesis is to design and compare machine learning and deep learning models for activity recognition through videos collected from different media in the field of sports.

Human activity …

Discrete Moving Target Defense Application And Benchmarking In Software-Defined Networking, Charan Gudla

Dissertations

Moving Target Defense is a technique focused on disrupting certain phases of a cyber-attack. The static nature of the existing networks gives the adversaries an adequate amount of time to gather enough data concerning the target and succeed in mounting an attack. The random host address mutation is a well-known MTD technique that hides the actual IP address from external scanners. When the host establishes a session of transmitting or receiving data, due to mutation interval, the session is interrupted, leading to the host’s unavailability. Moving the network configuration creates overhead on the controller and additional switching costs resulting in …

Reproducing The Status Quo In The Middle School English Classroom: A Critical Examination Of Literacy Learning Via Personalized Learning Technology, Michele Mcconnell

Dissertations

Personalized learning technology (PL Tech) is a growing educational reform movement supported by federal grant dollars. As a bourgeoning educational movement, no research has been conducted to explore the potential effects of such structures in supporting student literacy learning. Additionally, current education reform research often lacks the perspective of the students experiencing the reform. Therefore, this study sought to examine the lived experiences of middle school students using PL Tech to understand what structural and cultural arrangements influenced students’ literacy learning.

Portraiture, a qualitative methodology, was employed to conduct the study at a charter school in Fresno, California implementing PL …

"Not In My Town": A Community's Response To Water And Soil Pollution, Karolina Staros

Dissertations

At the core of this dissertation is the acknowledgment that social movements are complex networks of people who face many obstacles in their efforts to achieve social change. One critique of social movements is that their goals and mission are limited to short term ideas and not long-term, systemic transformation. The lack of long term, systemic change can be observed when social movement groups mobilize for the same cause over and over again with what appears to be little progress over a period of time. The exact blueprint for a social movement’s success does not exist, but it is posited …

Understanding Potential Climate Change Impacts On Water Resources Within A Fractured Rock Watershed In Northern Togo, Mahawa-Essa Mabossani Akara

Dissertations

More than 72% of sub-Saharan Africa land surface is comprised of hard rock with fractured rock aquifers supplying water to an estimated 25% of the rural population. Given low porosity and storativity, fractured rock aquifers are particularly vulnerable to stresses such as projected population growth and climate variability. General circulation models of sub-Saharan Africa predict increases in temperature and in occurrences of extreme precipitation trends, such as flooding and drought. Adaptation strategies that promote optimal uses of water resources have emerged, although, most focus exclusively on surface water resources. This project investigates the potential impact of climate change on surface …