Digital Commons Network^™

Safety And Optimality Monitors For Learning-Enabled Systems Using Conformal Prediction, Jackson Cox

McKelvey School of Engineering Graduate Student Theses & Dissertations

The use of machine learning to create data-driven plant models and controllers has led to an increased need for safety and optimality monitors for model-based systems. System plant models are subject to uncertainty due to learning constraints such as unseen data and overfitting or physical constraints such as unknown dynamics and noise. This uncertainty is detrimental to safety-critical systems and must be properly regulated. To curb this uncertainty, we create prediction sets using the guarantees provided by Conformal Prediction. With a user-specified high probability, these prediction sets contain the true plant system states for an entire prediction horizon, which we …

Recent Trends And Biases In Mesophotic Ecosystem Research, Veronica Z. Radice, Alejandra Hernández-Agreda, Gonzalo Pérez-Rosales, Ryan Booker, Jessica Bellworthy, Manon Broadribb, Gaby E. Carpenter, Clara Diaz, Ryan J. Eckert, Nicola L. Foster, Johanna C. Gijsbers, Erika Gress, Jack H. Laverick, Valerio Micaroni, Miriam Pierotti, Héloïse Rouzé, Angela Stevenson, Alexis B. Sturm, Pim Bongaerts

School of Biological and Marine Sciences

Mesophotic ecosystems (approx. 30-150 m) represent a significant proportion of the world's oceans yet have long remained understudied due to challenges in accessing these deeper depths. Owing to advances in underwater technologies and a growing scientific and management interest, there has been a major expansion in research of both (sub)tropical mesophotic coral ecosystems and temperate mesophotic ecosystems. Here, we characterize the recent global trends in mesophotic research through an updated release of the 'mesophotic.org' database (www.mesophotic.org) where we reviewed and catalogued 1500 scientific publications. In doing so, we shed light on four major research biases: a gross imbalance in (a) …

A Search Using Geo600 For Gravitational Waves Coincident With Fast Radio Bursts From Sgr 1935+2154, A. G. Abac, R. Abbott, I. Abouelfettouh, Teviet Creighton, Mario C. Diaz, Francisco Llamas Villarreal, Soma Mukherjee, Volker Quetschke, Wenhui Wang

Physics & Astronomy Faculty Publications

The magnetar SGR 1935+2154 is the only known Galactic source of fast radio bursts (FRBs). FRBs from SGR 1935+2154 were first detected by the Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB and the Survey for Transient Astronomical Radio Emission 2 in 2020 April, after the conclusion of the LIGO, Virgo, and KAGRA Collaborations' O3 observing run. Here, we analyze four periods of gravitational wave (GW) data from the GEO600 detector coincident with four periods of FRB activity detected by CHIME/FRB, as well as X-ray glitches and X-ray bursts detected by NICER and NuSTAR close to the time of one of the …

Development Of New Controller And Associated Cybersecurity Issues With Battery Energy Storage Integrated With Microgrid, Syeda Afra Saiara

Electronic Theses and Dissertations Archive

Battery energy storage system (BESS) plays a crucial role in integrating renewable sources in microgrids. However, robust BESS controllers are needed to carry out this function properly. Existing controllers suffer from overshoots and slow convergence issues. This thesis proposes a novel Sigma Delta Modulation (SDM) controller for BESS in solar photovoltaic (PV) connected microgrids to address the limitations of existing controllers. The performance of SDM has been compared with that of the Proportional Integral (PI) and Fuzzy Logic based controllers. Also, the thesis addresses the cybersecurity issues in solar PV based microgrids. The Ensemble Learning technique and an Improved Ensemble …

On The Power Series Method For Solitons And Peakons Of Nonlinear Pde, Erika Olivares, Vesselin Vatchev

School of Mathematical & Statistical Sciences Faculty Publications

In this paper we discuss the power series method to obtain traveling wave solutions of nonlinear PDE in one space variable. The method, including a recursive procedure for the coefficients and error estimate for the partial sums, is presented for the Camassa-Holm equation. Numerical examples of approximate single soliton and single peakon solutions are included.

Social Media Intelligence: Responding To Crime And Violence In The Digital World, Chloe Lynn Sitton

Theses

The integration of social media into everyday life has transformed how crime is committed, communicated, and investigated. This capstone project examines the emerging field of social media intelligence and its growing influence on modern policing, surveillance, and the community. Drawing from sociological theory, law enforcement practice, legal analysis, and community-based research, this project offers a far-reaching interdisciplinary view of how social media is shaping crime and justice in the United States.

Schedulability Analysis Of Multi-Phase Limited-Preemption Tasks, Benjamin Standaert

McKelvey School of Engineering Graduate Student Theses & Dissertations

This work addresses hard real-time systems, in which tasks must be scheduled so that they are guaranteed to meet deadlines. In particular, when tasks execute across multiple domains with high preemption costs, the combined cost of these preemptions can cause the system to become unschedulable. The number of preemptions must therefore be bounded to limit the overall task execution time, while ensuring that task blocking times are small enough to allow the system to be schedulable. Prior work introduces the Multi-Phase Secure model, which describes a more exact version of this scenario, and an algorithm to determine schedulability of sporadic …

Codifying Domesticity: The Story Of The Recommended Minimum Requirements For Small Dwelling Construction Of 1923, The Housing Policy Of The Hoover Secretariat, And The Impact On American Residential Architecture, Noah Morris

Graduate School of Architecture & Urban Design Theses & Dissertations

During the nineteenth and twentieth centuries, fire disasters and health-safety issues led to the widespread adoption of building codes. While the National Board of Fire Underwriters published the National Building Code in 1905, the code did not maintain regulatory consistency across the nation. This lack of consistency across the nation and socio-economic factors contributed to a nation-wide housing shortage of a million units by 1919. During World War I, the government addressed the housing crisis through the United States Housing Corporation and Emergency Fleet Corporation, building public housing based on the ideals of the Garden City Movement.[1] Following the …

Synthesis Of Higher-Order Catenanes And Catenane-Based Materials, Gray Harlan

Arts & Sciences Graduate Student Theses and Dissertations

Catenanes are a subset of mechanically interlocked molecules (MIMs) and are composed of interlocked rings that can be oriented linearly, radially, or branched. A defining feature of all MIMs is that they are bound through their architectures consisting of mechanical bonds, leading to unique topologies. Catenanes have attracted interest due to their stimuli-responsive behavior and the degrees of freedom afforded by the mechanical bond, a feature which is absent with standard covalent bonds. The stimuli responsiveness of catenanes arises from their templated syntheses, where two or more pre-macrocycles are brought together by a driving force. Various templation strategies rely on …

A Computational And Mathematical Approach To The Preclinical Development Of Alpha Emitting Radiopharmaceutical Therapies, Abdulaziz Said

McKelvey School of Engineering Graduate Student Theses & Dissertations

Numerous candidate nuclides have been undergoing rigorous preclinical development in the pursuit of novel targeted therapies. Successful development of these drugs relies on the understanding of physiological impacts at the macro and micro scales, in addition to a scalable process for their production. Here, mathematical and computerized approaches have been developed to guide this preclinical development. In this report, two alpha emitting nuclides Pb-212 and Ra-223 are modeled. Radium-223 dichloride citrate a newly approved ion indicated for treatment of bone metastatic castrate resistant prostate cancer, irradiates lesions through targeted uptake in bone at sites of disease. We have undertaken the …

Enhanced Instructional And Professional Growth Through A Pragmatic Instructional Approach, Joanna C. Weaver, Gabriel T. Matney, Chloe Beeker, Alex Zalar

Journal on Empowering Teaching Excellence

Access the online Pressbooks version of this introduction here.

Finding a pragmatic process across university programs and disciplines that has the potential to strengthen programs and instruction has promise for adoption because of the possible impact and benefits. Jigsaw Lesson Study (JLS) has that potential and could be expanded into not only a teacher-education classroom but also into any discipline across a university campus. JLS offers opportunities for student engagement and professional development. Here, we used the JLS process, modified from Lesson Study (LS), to strengthen instructional decision-making, lesson planning, and student learning in a teacher-education course. We sought to …

Full Issue: Journal On Empowering Teaching Excellence, Volume 8, Issue 2, Fall 2024

Journal on Empowering Teaching Excellence

The full-length Spring 2024 issue (Volume 8, Issue 1) of the Journal on Empowering Teaching Excellence

Access the online Pressbooks version (with downloadable EPUB format) here.

The Fall 2024 issue presents practical ideas and prompts for those who teach at colleges and universities in a variety of disciplines. Articles ways to use popular culture (in this case, reality TV) to teach higher-level concepts; strategies for adapting Lesson Study techniques for preservice teachers; and a review of McNair et al.'s 2022 book on creating student ready colleges.

The Four Domains Model Of Artificial Intelligence In Surgical Education: Adapting Applications To Trainee Level, Anant R. Tewari, Jasraj Raghuwanshi, Lawal A. Labaran, Xudong Li

Journal of Innovation in Health Sciences Education

Since the inception of modern medicine, surgical trainees have benefitted from coaching and feedback from senior surgeons. In the high-demand operating room environment, granular feedback is often limited by time constraints. Artificial intelligence (AI) represents a novel frontier in surgical education in that it may be able to provide reliable, objective, and comprehensive feedback in an automated manner. While prior studies have given broad overviews of AI in surgical training, there has been no study to our knowledge that has codified the myriad applications and offered guidance for which applications best suit trainees at various levels of surgical education. We …

Integrating Supports To Meet The Needs Of The Whole Child, Rebecca Wright, Deshonda Stringer

Georgia Association for Positive Behavior Support Conference

Georgia Multi-Tiered System of Supports (GaMTSS) is a data-driven, multi-level prevention system designed to meet the needs of the whole child by implementing a continuum of tiered supports. This session will discuss the integration of academics, behavior, and well-being which is essential for student and educator success. These supports play a critical role in impacting positive school climate. An overview of the five essential components of GaMTSS, with an emphasis on building a strong infrastructure, will also be discussed.

A Structural Approach To The Application Of Section One Of The Sherman Act To Oligopolistic Interdependence, Annmarie Levins

Maine Law Review

A central tenet of American economic thought is that markets in which many producers compete for business are preferable to those in which one or a few sellers dominate. The conventional wisdom underlying this preference is that competitive markets produce more of the goods consumers want at lower prices than do noncompetitive markets. Oligopolies are markets in which there are few sellers. Oligopolistic markets are characterized frequently by higher prices and lower outputs than competitive markets. Many sectors of the American economy are oligopolistic. For example, the American automobile industry is dominated by "the big three," General Motors, Ford, and …

Discovering The Process Of Reasonable Academic Accommodations For Pre-Licensure Nursing Students With Learning Disabilities, Amy Yarbrough

Dissertations

The purpose of this study was to explore the process by which nursing faculty make reasonable academic accommodations for students with learning disabilities in the classroom setting. Nursing students with identified learning disabilities require academic accommodations to facilitate their success. The process of reasonable academic accommodations for nursing students with learning disabilities has not been examined within nursing education literature. Clarification is necessary regarding this process to promote student success and inclusive learning environments within nursing education. Constructivist grounded theory methods as described by Charmaz (2014) guided data collection and analysis. The accommodation processes with categories were identified. The emergent …

Understanding Gravitational Lensing Using General Relativity, Sophia Macqueen Pooler

Honors Program Theses and Projects

Gravitational lensing is typically modelled using thin-lens approximations which assume that the effect of the gravitational field of the intervening mass can be adequately described by the physics of an optical lens. In this project we derived equations to model how spacetime curvature alters geodesics available to light rays directly from the principles of general relativity and used these results to produce visualizations of these effects. We began with the Robertson-Walker metric to define a flat, unperturbed space time and determined a suitable mass density model for the galaxy cluster that will act as our gravitational lens. Employing this metric …

Examining Teachers’ Experiences In Fostering Social-Emotional Learning After Returning To In-Person Instruction In The Midst Of The Covid-19 Pandemic, Rosario Grajeda

Dissertations

Purpose: This qualitative phenomenological study examines how middle school teachers in Riverside County, California, support the social-emotional learning (SEL) needs of students as students returned to in-person instruction after the COVID-19 pandemic. Methodology: This qualitative study explores how Riverside County middle school teachers addressed students' social and emotional needs upon returning to in-person learning after COVID-19. Twelve teachers from local public middle schools (grades 6-8) participated in semi-structured interviews, answering ten questions. Data from interviews and artifacts were transcribed and analyzed using NVIVO software to identify recurring themes related to the study questions. Findings: The shared experiences of participants and …

Exploring Simulations In Mathematics Teacher Education, Madelyn Williams Colonnese, Bima Sapkota, Carrie Lee, Liza Bondurant, Gregory Benoit, Grace Pai, Heather Howell, Erin Barno

CoE Publications

Practice-based teacher education has been suggested as one approach to help preservice teachers (PSTs) learn how to enact high- leverage teaching practices such as facilitating a whole class discussion (Association of Mathematics Teacher Educators, 2017; McDonald et al., 2013). McDonald et al. (2013) suggested a learning cycle that includes four parts: 1) introduce the practice; 2) prepare for and rehearse the practice; 3) implement the practice with students; and 4) analyze the enactment to inform future cycles. The rehearsal within the learning cycle provides space for the PSTs to practice enacting the instructional practice while receiving feedback from the mathematics …

From Rural Fields To Urban Kitchens: Structural Change And The Decline Of Women's Work In India, Michael Peters, Pamela Torola, Lindsey Uniat, Fabrizio Zilibotti

Discussion Papers

India’s GDP per capita grew threefold between 1987 and 2019, coinciding with rapid urbanization. During this period, female labor force participation (FLFP) declined significantly. Consistent with this observation, we document a pronounced urban-rural participation gap, where FLFP is higher in poorer, rural labor markets. Using time-use data, we show that this is primarily driven by an extensive margin: in rural districts, women often engage in part-time activities, typically related to agriculture and informal family businesses. These activities are less common in urban areas, where some women take formal jobs, but a larger share withdraws from the labor market to focus …

A Personal Touch: Intergovernmental Organizations And The Mechanism For Mayor-To-Mayor Relationships, Matthew L. Howell

Commonwealth Review of Political Science

Much of the research on intergovernmental cooperation starts with cities that are already in a relationship or are co-participants in an intergovernmental organization and then look at which relationships get developed into cooperative agreements. In this article, four potential methods by which local officials might form those precursor relations are tested. First, cities work within a network context where intergovernmental organizations might matter for several reasons. The intergovernmental organization might reflect similarity in the organizations, called homophily. Second and third, existing intergovernmental organizations may matter directly by serving as a social focus, or a Tertius Iungens. Finally, the professionalism of …

Optimization Of Construction Scheme Of Ultra‑Large Special‑Shaped Foundation Pit Adjacent To Existing Station And Temporary Steel Bridge, Chen Dengwei

Journal of China & Foreign Highway

With the intensifying development density of urban underground space in China，the impact of ultra-large foundation pit construction on the normal operation of adjacent structures cannot be ignored.Relying on the Huangmugang Comprehensive Transportation Hub Project in Shenzhen，this paper studied the deformation of the envelope structure and soil caused by the excavation of the ultra-large special-shaped foundation pit，as well as the structural response of the deformation of the adjacent existing station and the temporary steel bridge.The paper optimized the construction scheme of the special-shaped foundation pit excavation.The results show that the deformation trend of the envelope structure on the north and south …

Friction‑ 1d Transformer ： A 1d Vision Transformer Hybrid Model For Skid Resistance Prediction On Asphalt Pavements, Pei Feifei, Nie Zilong, Xu G Uomin, Zhan You, Gong Xianqi, Ai Changfa, Deng Yuan, Ji Zhengyun, Wang Shifa

Journal of China & Foreign Highway

The friction performance of road surfaces is an important indicator of highway safety，which is closely related to road texture.In this paper，a set of three-dimensional denoising methods for road texture data with different noise levels was proposed，which could effectively remove noise while preserving local texture features.In addition，a skid resistance prediction model named Friction- 1D Transformer was developed based on the design concept of Vision Transformer （VIT） for skid resistance evaluation of asphalt pavements.Unlike traditional convolutional neural networks，the Friction- 1D Transformer utilized positional encoding structures and multi-head attention mechanisms to extract global features from one-dimensional （1D） texture signals along the direction of …

The Chinese Room And Creating Consciousness: How Recent Strides In Ai Technology Revitalize A Classic Debate, Thomas Held

Departmental Honors & Graduate Capstone Projects

Since 1950, when Alan Turing first posed the question of whether a machine could think, the possibility of artificial consciousness has sparked intense and ongoing debate, and strong positions have been staked out on each side of the argument. On the one hand, the historically popular functionalist school of thought claims that any system capable of producing suitably “conscious” behavior in a given environment should be considered conscious. On the other hand, John Searle’s famous “Chinese Room” argument insists that this cannot be the case, and that consciousness is in all likelihood not artificially reproducible. However, both positions have issues—the …

Experimental Investigation On Shrinkage Effect Of Ultra‑High Performance Concrete Under Steam Curing, Li Bing, Yang Tengyu, Fang Changle, Luo Zirun, Li Chuanxi, Tan Ke

Journal of China & Foreign Highway

Determining the free shrinkage of U HPC is an important basis for analyzing the shrinkage effect of steel UHPC composite bridge deck.Therefore，based on the UHPC materials to be used in a project，three batches of UHPC free shrinkage specimens were made，and three specimens were made in each batch.By testing the strain and temperature of specimens during curing，the free shrinkage strain-age curve and temperature-age curve of UHPC were obtained.The development and variation law of UHPC shrinkage strain are discussed.Based on the experimental results，the equivalent time is introduced on the basis of Arrhenius empirical formula，and a modified model of free shrinkage is proposed.Finally，based …

Mechanical And Vegetative Performance Of Bamboo Fiber‑Reinforced Eco‑Concrete With Recycled Aggregate, Li Tao, Deng Bofan, He Maolin, Liu Ting, Chen Houde

Journal of China & Foreign Highway

In response to the current common urban construction waste disposal issue，this study utilized processed recycled construction waste aggregate and bamboo waste materials to produce bamboo fiber-reinforced eco-concrete with recycled aggregate.By adjusting the dosage of bamboo fiber，the effects of the dosage of bamboo fiber on the mechanical and vegetative performance of the concrete were systematically analyzed by means of orthogonal tests and verification methods.The test results indicate that bamboo fiber enhances the toughness of eco-concrete significantly.Particularly，when the dosage of bamboo fiber exceeds 3.0 kg/m3，there is a significant enhancement in the tensile performance of the eco-concrete with recycled aggregate.Due to the spatial …

Curing Law And Road Performance Of Polyurethane Mixture, Sun Shengkai, Zheng Mao, Tang Xiong, Liu Li, Zhong Shengran, Si Te

Journal of China & Foreign Highway

Polyurethane mixture is composed of polyurethane binder，rubber particles，and stones.Compared with ordinary asphalt mixture，it has the characteristics of a higher content of rubber particles and large void ratios.This article first tested the viscosity-time curve and viscosity-temperature curve of one-component polyurethane and determined the compaction temperature of the polyurethane mixture.Based on the rutting test，three-point bending test，water immersion Marshall test，freeze-thaw splitting test，and pendulum friction test，the road performance of the polyurethane mixture under different replacement amounts of rubber particles was tested.The research results show that the mixing temperature of PU- 1 polyurethane mixture can be basically controlled between 73 ℃ and 81 ℃，and it …

Elimination Method Of Temperature Lag Effect In Deformation Monitoring Data Of Cable‑Stayed Bridge Structures, Liu Hongshuang, Zhai Wenqiang, Zeng Guoliang

Journal of China & Foreign Highway

There is a temperature lag effect in the deformation monitoring data of the bridge structure.Eliminating the temperature lag effect is of great significance in the health monitoring of the bridge structure.Based on the linear correlation between the deformation of the bridge structure and the temperature，this paper applied the goodness of fit test and proposed a time-domain translation elimination method.On this basis，by taking the long-term synchronous monitoring of the tower inclination，beam end displacement，main girder deflection，and temperature data of a cable-stayed bridge as an example，this method was used to eliminate the temperature lag effect in the deformation monitoring data and compared with …

Sensitivity Analysis Of Parameters Of Cable‑Stayed Bridges With Full Floating Spatial Frame, Liu Anqing, Yan Tengfei, Zheng Pengju, Gu Yanlin, Li Jie, Wang Qiang

Journal of China & Foreign Highway

In order to clarify the influence of design parameters on the mechanical behavior of a cable-stayed bridge of a floating system，a finite element model of the bridge was established by using the finite element analysis software MIDAS/Civil based on a single-tower double-cable plane steel-concrete composite beam cable-stayed bridge with full floating spatial frame.The sensitivity of parameters such as temperature effect，secondary dead load，and support system in the completed bridge state was analyzed and compared with the semi-floating system of the bridge.The results show that temperature and secondary dead load have a significant impact on the deflection and stress of the main …

Segment Connection Mod E For Stiffening Girder Hoisting Construction Of Long‑Span Steel Truss Girder Suspension Bridge, Shao Guangmiao, Pan Q Uan, Yan Donghuang, Xu Hongsheng

Journal of China & Foreign Highway

In the process of stiffening girder construct ion of a long-span steel truss girder suspension bridge，different connection modes of stiffening girder segments will directly affect the internal force，alignment，and bridge state of the structure during construction.By taking the construction of the stiffening girder of a bridge as the research background，the finite element model of the whole process of the bridge was established.The advantages and disadvantages of the segmented hinge method and the segmented rigid connection method were compared，and the two-two segmented rigid connection scheme was proposed.On this basis，according to the changing law of steel truss section alignment and lower chord opening …