bluuebunny/crossref_metadata_2025 huggingface dataset:
What are the Experiences of African American Female Principals in High-Poverty Urban Schools?
Authors:   , Carson Dayanna V.
Published: February 2025

The purpose of this study was to explore the experiences of African American female principals serving in high-poverty urban schools. This study was warranted due to the growing number of African American female principal leaders in urban schools over the last 20 years. School leaders in urban school districts are expected to increase academic achievement, support district initiatives, and foster the development of urban communities. The study results will serve as a source of information to educators on similar journeys.
Markov Model of Segmentation and Clustering: Applications in Deciphering Genomes and Metagenomes
Authors:   , Pandey Ravi Shanker
Published: February 2025

Rapidly accumulating genomic data as a result of high-throughput sequencing has necessitated development of efficient computational methods to decode the biological information underlying these data. DNA composition varies across structurally or functionally different regions of a genome as well as those of distinct evolutionary origins. We adapted an integrative framework that combines a top-down, recursive segmentation algorithm with a bottom-up, agglomerative clustering algorithm to decipher compositionally distinct regions in genomes. The recursive segmentation procedure entails fragmenting a genome into compositionally distinct segments within a statistical hypothesis testing framework. This is followed by an agglomerative clustering procedure to group compositionally similar segments within the same framework. One of our main objectives was to decipher distinctive evolutionary patterns in sex chromosomes via unraveling the underlying compositional heterogeneity. Application of this approach to the human X-chromosome provided novel insights into the stratification of the X chromosome as a consequence of punctuated recombination suppressions between the X and Y from the distal long arm to the distal short arm. Novel "evolutionary strata" were identified particularly in the X conserved region (XCR) that is not amenable to the X-Y comparative analysis due to massive loss of the Y gametologs following recombination cessation. Our compositional based approach could circumvent the limitations of the current methods that depend on X-Y (or Z-W for ZW sex determination system) comparisons by deciphering the stratification even if only the sequence of sex chromosome in the homogametic sex (i.e. X or Z chromosome) is available. These studies were extended to the plant sex chromosomes which are known to have a number of evolutionary strata that formed at the initial stage of their evolution, presenting an opportunity to examine the onset of stratum formation on the sex chromosomes. Further applications included detection of horizontally acquired DNAs in extremophilic eukaryote, Galdieria sulphuraria, which encode variety of potentially adaptive functions, and in the taxonomic profiling of metagenomic sequences. Finally, we discussed how the Markovian segmentation and clustering method can be made more sensitive and robust for further applications in biological and biomedical sciences in future.
Increasing Problem Solving in a Special Education Class by Teaching Talk Aloud Problem Solving (TAPS)
Authors:   , Will Sean Michael
Published: February 2025

Although there is extensive research demonstrating the benefits of teaching problem solving repertoires to typically developing individuals, there is little research on the effectiveness of these kinds of procedures with individuals with special needs. In this study, a group of special education students in a public school were taught problem solving skills using a curriculum called Talk Aloud Problem Solving (TAPS), which was developed by Robbins (2014). TAPS teaches students five problem solving skills and five active listening skills. This study utilized a multiple baseline design to examine whether training in TAPS would change the way that students solve problems and increase their accuracy when solving problems. In addition, a reversal design was used for each participant, consisting of the presence and the removal of the active listener during different stages of the study. After TAPS training and guided practice sessions, all students demonstrated new problem solving repertoires and their accuracy improved. For some students, having an audience (an active listener) was necessary to maintain their behavior. Further research is needed to determine how to teach students to be their own active listener.
Generating Molecular Biology Tools to Investigate the Ca2+ Binding Ability of Arabidopsis TON2
Authors:   , Shao Danyang
Published: February 2025

The position of the cell division plane in plants is determined by the position of the preprophase band. The pre prophase band (PPB) is a ring of microtubules centered around the nucleus on the inner side of plasma membrane that establishes the cortical division site. The PPB forms at the end of G2 and breaks down at the end of prophase leaving behind protein markers of its position that are collectively called the cortical division site. During cytokinesis the phragmoplast expands towards the cortical division site and mediates the fusion of the new cell plate with the mother cell at that position. Several proteins necessary for PPB formation in plants have been identified, including maize DCD1 and ADD1 and Arabidopsis TON2, which are all type 2A protein phosphatase (PP2A)B" regulatory subunits. DCD1, ADD1, and TON2 localize to the PPB and the cortical division site through metaphase. The PP2A subunits each have two EF-hand domains, which are predicted to bind calcium ions. Since calcium ions are important for some aspects of cell division, we designed a series of constructs to test if TON2 binds calcium. TON2 protein was cloned into expression vectors, pET42a, and expression of TON2 protein was confirmed via Western blotting and immunodetection using a GST antibody. Site directed mutagenesis was used to mutate the TON2 EF-hand domains and mutated cDNAs were also cloned into expression vectors. These were then expressed in bacterial systems. Finally, the GST tagged proteins were purified. In the future, wild-type and mutated proteins TON2 proteins will used in calcium binding assays to determine if TON2 binds calcium.
Ready to Run: Fort Worth's Mexicans in Search of Representation, 1960-2000
Authors:   , Martínez Peter Charles
Published: February 2025

This dissertation analyzes Fort Worth's Mexican community from 1960 to 2000 while considering the idea of citizenship through representation in education and politics. After establishing an introductory chapter that places the research in context with traditional Chicano scholarship while utilizing prominent ideas and theories that exist within Modern Imperial studies, the ensuing chapter looks into the rise of Fort Worth's Mexican population over the last four decades of the twentieth century. Thereafter, this work brings the attention to Mexican education in Fort Worth beginning in the 1960s and going through the end of the twentieth century. This research shows some of the struggles Mexicans encountered as they sought increased representation in the classroom, on the school board, and within other areas of the Fort Worth Independent School District. Meanwhile, Mexicans were in direct competition with African Americans who also sought increased representation while simultaneously pushing for more aggressive integration efforts against the wishes of Mexican leadership. Subsequently, this research moves the attention to political power in Fort Worth, primarily focusing on the Fort Worth city council. Again, this dissertation begins in the 1960s after the Fort Worth opened the election of the mayor to the people of Fort Worth. No Mexican was ever elected to city council prior to the rise of single-member districts despite several efforts by various community leaders. Chapter V thus culminates with the rise of single-member districts in 1977 which transitions the research to chapter VI when Mexicans were finally successful in garnering political representation on the city council. Finally, Chapter VII concludes the twentieth century beginning with the rapid rise and fall of an organization called Hispanic 2000, an organization that sought increased Mexican representation but soon fell apart because of differences of opinion. In concluding the research, the final chapter provides an evaluation of the lack of Mexican representation both in Fort Worth education and in the political realm. Furthermore, the finishing chapter places Fort Worth's Mexican situation within the context of both Chicano history as well as identify some key aspects of the history of modern empire. This investigation poses pertinent questions regarding the lack of Mexican representation while African Americans end the century well-represented on the school board, in education jobs, and on the city council.
Understanding the Lirico-Spinto Soprano Voice through the Repertoire of Giovane Scuola Composers
Authors:   , Hartgraves Youna Jang
Published: February 2025

As lirico-spinto soprano commonly indicates a soprano with a heavier voice than lyric soprano and a lighter voice than dramatic soprano, there are many problems in the assessment of the voice type. Lirico-spinto soprano is characterized differently by various scholars and sources offer contrasting and insufficient definitions. It is commonly understood as a pushed voice, as many interpret spingere as ‘to push.' This dissertation shows that the meaning of spingere does not mean pushed in this context, but extended, thus making the voice type a hybrid of lyric soprano voice type that has qualities of extended temperament, timbre, color, and volume. This dissertation indicates that the lack of published anthologies on lirico-spinto soprano arias is a significant reason for the insufficient understanding of the lirico-spinto soprano voice. The post-Verdi Italian group of composers, giovane scuola, composed operas that required lirico-spinto soprano voices. These giovane scuola composers include Alfredo Catalani (1854 –1893), Umberto Giordano (1867 –1948), Pietro Mascagni (1863 –1945), Giacomo Puccini (1858 –1924), and Riccardo Zandonai (1883 –1944). Descriptions of the soprano voices that premiered these roles are included in this document to determine the suitability of the lirico-spinto soprano voice for each role.
King of the News: An Agenda-Setting Approach to the John Oliver Effect
Authors:   , Ryan Kevin
Published: February 2025

Journalists have insisted that John Oliver has inspired a new kind of journalism. They argue that Oliver's show Last Week Tonight with John Oliver has inspired real-world action, a phenomenon journalists have called the "John Oliver Effect." Oliver, a comedian, refuses these claims. This thesis is the result of in-depth research into journalists' claims through the lens of agenda-setting. By conducting a qualitative content analysis, I evaluated the message characteristics of framing devices used on Oliver's show, then compared those message characteristics to the message characteristics and framing devices employed by legacy media.
Investigation of Immersion Cooled ARM-Based Computer Clusters for Low-Cost, High-Performance Computing
Authors:   , Mohammed Awaizulla Shareef
Published: February 2025

This study aimed to investigate performance of ARM-based computer clusters using two-phase immersion cooling approach, and demonstrate its potential benefits over the air-based natural and forced convection approaches. ARM-based clusters were created using Raspberry Pi model 2 and 3, a commodity-level, single-board computer. Immersion cooling mode utilized two types of dielectric liquids, HFE-7000 and HFE-7100. Experiments involved running benchmarking tests Sysbench high performance linpack (HPL), and the combination of both in order to quantify the key parameters of device junction temperature, frequency, execution time, computing performance, and energy consumption. Results indicated that the device core temperature has direct effects on the computing performance and energy consumption. In the reference, natural convection cooling mode, as the temperature raised, the cluster started to decease its operating frequency to save the internal cores from damage. This resulted in decline of computing performance and increase of execution time, further leading to increase of energy consumption. In more extreme cases, performance of the cluster dropped by 4X, while the energy consumption increased by 220%. This study therefore demonstrated that two-phase immersion cooling method with its near-isothermal, high heat transfer capability would enable fast, energy efficient, and reliable operation, particularly benefiting high performance computing applications where conventional air-based cooling methods would fail.
Two-Phase Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics using Practical Enhanced Surfaces
Authors:   , Altalidi Sulaiman S.
Published: February 2025

The objective of this research was to investigate the performance of two-phase spray cooling with HFC-134a and HFO-1234yf refrigerants using practical enhanced heat transfer surfaces. Results of the study were expected to provide a quantitative spray cooling performance comparison with working fluids representing the current and next-generation mobile air conditioning refrigerants, and demonstrate the feasibility of this approach as an alternative active cooling technology for the thermal management of high heat flux power electronics (i.e., IGBTs) in electric-drive vehicles. Potential benefits of two-phase spray cooling include achieving more efficient and reliable operation, as well as compact and lightweight system design that would lead to cost reduction. The experimental work involved testing of four different enhanced boiling surfaces in comparison to a plain reference surface, using a commercial pressure-atomizing spray nozzle at a range of liquid flow rates for each refrigerant to determine the spray cooling performance with respect to heat transfer coefficient (HTC) and critical heat flux (CHF). The heater surfaces were prepared using dual-stage electroplating, brush coating, sanding, and particle blasting, all featuring "practical" room temperature processes that do not require specialized equipment. Based on the obtained results, HFC-134a provided a better heat transfer performance through higher HTC and CHF values compared to HFO-1234yf at all tested surfaces and flow rates. While majority of the tested surfaces provided comparable HTC and modestly higher CHF values compared to the reference surface, one of the enhanced surfaces offered significant heat transfer enhancement.
Additive Manufacturing of Metastable Beta Titanium Alloys
Authors:   , Yannetta Christopher J.
Published: February 2025

Additive manufacturing processes of many alloys are known to develop texture during the deposition process due to the rapid reheating and the directionality of the dissipation of heat. Titanium alloys and with respect to this study beta titanium alloys are especially susceptible to these effects. This work examines Ti-20wt%V and Ti-12wt%Mo deposited under normal additive manufacturing process parameters to examine the texture of these beta-stabilized alloys. Both microstructures contained columnar prior beta grains 1-2 mm in length beginning at the substrate with no visible equiaxed grains. This microstructure remained constant in the vanadium system throughout the build. The microstructure of the alloy containing molybdenum changed from a columnar to an equiaxed structure as the build height increased. Eighteen additional samples of the Ti-Mo system were created under different processing parameters to identify what role laser power and travel speed have on the microstructure. There appears to be a correlation in alpha lath size and power density. The two binary alloys were again deposited under the same conditions with the addition of 0.5wt% boron to investigate the effects an insoluble interstitial alloying element would have on the microstructure. The size of the prior beta grains in these two alloys were reduced with the addition of boron by approximately 50 (V) and 100 (Mo) times.
When to Say It: Establishing a Verbal Cue
Authors:   , Rulla Emily
Published: February 2025

Dog trainers sometimes teach verbal cues by saying the cue as the dog is performing the desired behavior. However, there is disagreement about when to say the cue. In this study, a pet dog was trained to go to three different apparatus, the cue for each of which was given at a different time, in a multi-element design. The cue "hoop" was given just as the dog began to move to the hoop apparatus. The cue "carrier" was given as the dog was stepping into the carrier apparatus. The cue "platform" was given after the dog was sitting on the platform apparatus. To test if the dog had learned the cues, the trainer had the dog sit and gave the cue. During testing, if only the correct apparatus was present, the dog responded to all three cues. However, when all three apparatus were present, the dog only responded correctly to the "hoop" cue. This suggests that giving the cue just as the learner is beginning to perform the desired behavior is the most effective teaching method.
Shear and Bending Strength of Cold-Formed Steel Solid Wall Panels Using Corrugated Steel Sheets for Mobile Shelters
Authors:   , Derrick Nathan
Published: February 2025

The objective of this thesis is to determine if the single sided resistance spot weld (RSW) can be used as a feasible connection method for cold formed steel (CFS) shear walls subject to lateral force of either seismic or wind loads on mobile shelters. The research consisted of three phases which include: a design as a 3D BIM model, connection tests of the resistance spot weld, and full-scale testing of the designed solid wall panels. The shear wall testing was conducted on specimens with both resistance spot weld and self-drilling screws and the results from tests gave a direct comparison of these connections when the solid wall panel was subjected to in-plane shear forces. The full-scale tests also included 4-point bending tests which was designed to investigate the wall panel's resistance to the lateral loads applied perpendicularly to the surface. The research discovered that the singled sided resistance spot weld achieved similar performance as the self-drilling screws in the applications of CFS wall panels for mobile shelters. The proposed single sided resistance spot weld has advantages of low cost, no added weight, fast fabrication, and it is a feasible connection method for CFS wall panels.
Design, Construction, and Application of an Electrostatic Quadrupole Doublet for Heavy Ion Nuclear Microprobe Research
Authors:   , Manuel Jack Elliot
Published: February 2025

A nuclear microprobe, typically consisting of 2 - 4 quadrupole magnetic lenses and apertures serving as objective and a collimating divergence slits, focuses MeV ions to approximately 1 x 1 μm for modification and analysis of materials. Although far less utilized, electrostatic quadrupole fields similarly afford strong focusing of ions and have the added benefit of doing so independent of ion mass. Instead, electrostatic quadrupole focusing exhibits energy dependence on focusing ions. A heavy ion microprobe could extend the spatial resolution of conventional microprobe techniques to masses untenable by quadrupole magnetic fields. An electrostatic quadrupole doublet focusing system has been designed and constructed using several non-conventional methods and materials for a wide range of microprobe applications. The system was modeled using the software package "Propagate Rays and Aberrations by Matrices" which quantifies system specific parameters such as demagnification and intrinsic aberrations. Direct experimental verification was obtained for several of the parameters associated with the system. Details of the project and with specific applications of the system are presented.
Nathanael Greene and the Myth of the Valiant Few
Authors:   , Smith David R.
Published: February 2025

Nathan Greene is the Revolutionary Warfare general most associated with unconventional warfare. The historiography of the southern campaign of the revolution uniformly agrees he was a guerrilla leader. Best evidence shows, however, that Nathanael Greene was completely conventional -- that his strategy, operations, tactics, and logistics all strongly resembled that of Washington in the northern theater and of the British commanders against whom he fought in the south. By establishing that Greene was within the mainstream of eighteenth-century military science this dissertation also challenges the prevailing historiography of the American Revolution in general, especially its military aspects. The historiography overwhelmingly argues the myth of the valiant few -- the notion that a minority of colonists persuaded an apathetic majority to follow them in overthrowing the royal government, eking out an improbable victory. Broad and thorough research indicates the Patriot faction in the American Revolution was a clear majority not only throughout the colonies but in each individual colony. Far from the miraculous victory current historiography postulates, American independence was based on the most prosaic of principles -- manpower advantage.
Trends in Special Education Due Process Hearings in Texas from 2010-2015: School, Parent, and Social Justice Issues that Inform a Principal's Decision-Making
Authors:   , Potón Marcy Rose
Published: February 2025

This study explores all due process hearings that occurred in Texas public school districts from 2010-2015. Special attention was paid to the reasons for the hearings within the legal reports addressed and their outcomes. The study was conducted using a quantitative approach involving a legal document content analysis of due process hearings to select the participants to be interviewed with a qualitative semi-structured interview protocol. Following this process, nine participants from one district were interviewed. Responses were then analyzed for themes and patterns using qualitative methods, and conclusions were drawn based on the data. The study found that campus and central office administrators believed socio-economic levels, lack of empathy shown to parents, and distrust contributed to parents' decisions to file due process complaints or litigation. They also believed that placement decisions influenced by student discipline, parent denial about the impact of the disability on children, and parent entitlement played a role. Lastly, the nine participants found that parent advocacy and communication were strong contributors to the amount of due process hearings held at Evergreen ISD.
Online Construction of Android Application Test Suites
Authors:   , Adamo David T.
Published: February 2025

Mobile applications play an important role in the dissemination of computing and information resources. They are often used in domains such as mobile banking, e-commerce, and health monitoring. Cost-effective testing techniques in these domains are critical. This dissertation contributes novel techniques for automatic construction of mobile application test suites. In particular, this work provides solutions that focus on the prohibitively large number of possible event sequences that must be sampled in GUI-based mobile applications. This work makes three major contributions: (1) an automated GUI testing tool, Autodroid, that implements a novel online approach to automatic construction of Android application test suites (2) probabilistic and combinatorial-based algorithms that systematically sample the input space of Android applications to generate test suites with GUI/context events and (3) empirical studies to evaluate the cost-effectiveness of our techniques on real-world Android applications. Our experiments show that our techniques achieve better code coverage and event coverage compared to random test generation. We demonstrate that our techniques are useful for automatic construction of Android application test suites in the absence of source code and preexisting abstract models of an Application Under Test (AUT). The insights derived from our empirical studies provide guidance to researchers and practitioners involved in the development of automated GUI testing tools for Android applications.
Mediational Pathways between High School Extracurricular Participation and Young Adult Educational Attainment: A Structural Equation Analysis
Authors:   , Long Roxanne
Published: February 2025

Little is known about the mechanisms by which extracurricular participation in high school influences educational attainment in young adulthood. Also limited is an understanding of the different types of extracurricular participation and how various activities may manifest within the relationship. The purpose of this study was to examine the link between high school extracurricular participation and educational attainment, with social capital, parental expectations, and academic achievement presented as mediators. Additionally, the present study will explore socioeconomic differences in the proposed relationships. The sample consisted of 5,239 ninth through twelfth graders from the National Longitudinal Study of Adolescent Health (Add Health). Structural equation modeling (SEM) and multiple-group SEM were used to test pathways. Extracurricular participation was categorized into sports participation, non-sport participation, mixed participation (including both sport and non-sport), and no participation. Social capital, a latent factor, was measured by the latent variables of family and school capital. Various indicators of family closeness and inclusion of school culture from survey items operationalize social capital. Parental expectations, another latent factor, was measured by one survey indicator using the question of how disappointed would your resident father and mother be if you did not graduate from college. Academic achievement was measured by grade point average and calculated by the average of self-reported grades in four subjects: English, math, social studies, and science. Educational level attained used seven levels ranging from less than 8th grade to beyond a Bachelor degree. Gender, race, and parent education were also included as covariates. Social capital, parental expectations, and high school academic achievement were all shown to be mediators between high school extracurricular participation and educational attainment. However, social capital's impact on educational attainment was indirect through GPA rather than direct. Sport showed better capacity to strengthen social capital than non-sport. However, non-sport participants achieved higher high school GPA than sport participants. On average, students involved in both sport and non-sport activities had more positive effects on all model variables than students involved in sports only. Results for socioeconomic comparison showed some evidence for the benefit of sport participation directly on educational level for low-income students. Practically speaking, the conclusion of the study is that students need to participate in a combination of activities that include both sport and non-sport to improve their chances of educational attainment.
Who is Really in Charge Here: An Exploration of the Formation and Empowerment of Opinion Leaders in a Reddit Gaming Community
Authors:   , Carter Clinton Chase
Published: February 2025

In an attempt to shed light on the further sophistication of opinion leadership in online communities, this study examined the forces and structures that affect their formation in the League of Legends subreddit. By investigating what users thought about the various types of individuals with which the communicate, the researcher hoped to begin to understand and record how those forces work bother on this particular subreddit and in mass media beyond. Opinion leadership continues to be an integral force in deciding what information is consumed by a public and under what frames and agendas it is contextualized. If researchers can operationalize formal definitions for the influences and structures that occur online, they can better navigate the deep waters that are global communication on the internet.
An Assessment of Extant Euphonium Methodologies for Developing and Performing in the Upper Register
Authors:   , Chou Wei Chien
Published: February 2025

This dissertation presents a categorization of existing methodologies of upper register development for euphoniumists with evaluation of effectiveness and current use of these methodologies. The purpose of this study is to provide euphonium musicians as well as educators with essential references and guides to applicable methods for developing the upper register more effectively with greater efficacy. The assessments of current methodologies include three steps: categorization, summarization, and evaluation. To support the significance why it could be more beneficial than the methodology alone, the dissertation will include the examination of the aspect of biomechanics and ergonomics, suggestions, and discussion of particular issues of the upper register.
Academic and Social Functioning of College Students with Attention-Deficit/Hyperactivity Disorder (ADHD)
Authors:   , Calmenson Nina
Published: February 2025

Attention-deficit/hyperactivity disorder (ADHD) is a complicated psychiatric disorder that is typically first diagnosed in childhood and associated with negative outcomes in adulthood such as poor academic performance and difficulties with social relationships. ADHD can be difficult to accurately diagnose in adulthood, given the absence of clear, agreed upon ADHD symptomology in adults. In the current study, two raters used psychometrically sound instruments and diagnostically valid assessment techniques on an archival dataset to create three distinct groups: ADHD [2/3 with other mental health diagnosis (OMH)], OMH only, and no diagnosis. Findings support the value of comprehensive assessment, combined with a thorough evaluation of the material by a trained clinician, for the accurate diagnosis of ADHD for research purposes. Comparisons were made across groups to infer that college students with ADHD have lower grade point averages and academic self-concept than students without mental health diagnoses. Yet, contrary to much of the current literature, college students with ADHD seem to create as strong, deep, supportive and harmonious relationships with loved ones and close friends as their non-diagnosed peers. Clinicians working with college students with ADHD may use the results of the current study to better inform conceptualization, better recognize the innate resilience college students with ADHD likely have, and inform treatment interventions.
Surface Degradation Behavior of Bulk Metallic Glasses and High Entropy Alloys
Authors:   , Ayyagari Venkata Aditya
Published: February 2025

In this study, the surface degradation behavior was studied for typical examples from bulk metallic glasses (BMGs), metallic glass composites (MGCs) and high entropy alloys (HEAs) alloy systems that are of scientific and commercial interest. The corrosion and wear behavior of two Zr-based bulk metallic glasses, Zr41.2Cu12.5Ni10Ti13.8Be22.5 and Zr57Cu15.4Ni12.6Al10Nb5, were evaluated in as-cast and thermally relaxed states. Significant improvement in corrosion rate, wear behavior, and friction coefficient was seen for both the alloys after thermal relaxation. Fully amorphous structure was retained with thermal relaxation below the glass transition temperature. This improvement in surface properties was explained by annihilation of free volume, the atomic scale defects in amorphous metals resulting from kinetic freezing. Recently developed MGCs, with in situ crystalline ductile phase, demonstrate a combination of mechanical properties and fracture behavior unseen in known structural metals. The composites showed higher wear rates but lower coefficient of friction compared to monolithic amorphous glasses. No tribolayer formation was seen for the composites in sharp contrast to that of the monolithic metallic glasses. Corrosion was evaluated by open circuit potential (OCP) analysis and potentiodynamic polarization. Site-specific corrosion behavior was studied by scanning vibration electrode technique (SVET) to identify formation of galvanic couples. Scanning kelvin probe microscope was used to map elecropositivity difference between the phases and linked to wear/corrosion behavior. Phases with higher elecropositivity were more susceptible to surface degradation. Wear and corrosion synergy in marine environment was evaluated for two high entropy alloys (HEAs), CoCrFeMnNi and Al0.1CoCrFeNi. Between the two alloys, Al0.1CoCrFeNi showed better wear resistance compared to CoCrFeMnNi in dry and marine conditions due to quicker passivation, a higher magnitude of polarization resistance and significantly larger pitting resistance.
U.S. International ESL Students' Experiences with and Perceptions of Utilizing Mobile Technologies for English Learning
Authors:   , Zhu Shanyuan
Published: February 2025

The purpose of this research was to examine ESL (English as a second language) students' current use of their mobile phones for English skill building activities outside of class in a U.S. school setting. In addition, this research reported on students' perceptions of the potential benefits of using smartphones in class for English learning. Also learners' current English related activities using mobile devices and time duration of using different phone features were studied. The literature review included smartphones, computer education, mobile learning, mobile assisted language learning (MALL), computer assisted language learning (CALL), theories of second language learning, second language learner attributes and the use of smartphones outside the classroom. An electronic survey was used to collect the quantitative data which were analyzed by descriptive and inferential statistics. The results concluded that students used mobile applications on a daily basis to read and write email, read books and news, check a dictionary, talk, text and video chat. Students used mobile phones outside of class to improve the English skills listed in the survey and the same participants perceived the potential benefits of using smartphones in class for the same English skills. Among the English skills, vocabulary exercises, finding example sentences of English words and English grammar exercises had a significant difference between out of class and in class variable. The results indicated a direction for future research on using mobile phones for ESL learning. This study also revealed a focus of practice for utilizing mobile technologies in the teaching and learning of ESL.
Simulink® Based Design and Implementation of Wireless Sensor Networks
Authors:   , Nune Raju
Published: February 2025

A wireless sensor network (WSN) is a spatially distributed network used to monitor the physical and environmental conditions such as temperature, pressure, sound, humidity, heat, etc. WSNs can be modeled using different simulation frameworks like OMNeT++, Prowler, Atarraya, PiccSIM, Network Simulator, etc. In this research, Simulink framework was used to model WSN system. The complete WSN consisting of transmitting nodes, communication channel, and receiver nodes are built in the Simulink framework. Orthogonal frequency division multiplexing technique was used to transmit the information. The implemented wireless sensor system behavior is studied using temperature as the measurement parameter at different values of signal to noise ratio. The plots of bit error rate versus signal to noise ratio and frame error rate versus signal to noise ratio are generated in the Simulink framework. It is easy to study the effect of different physical layer parameters on the performance of wireless sensor networks by implementing WSN in the Simulink framework.
A Study of Selected Compositional Techniques Found in Young Ja Lee's Variations Pour Piano "Umma ya, Nuna ya" (1996)
Authors:   , Shin Eun Young
Published: February 2025

Young Ja Lee (b. 1931) is regarded as one of the most important living female composers in Korea. She leads and contributes to the Korean classical music society as a gifted composer and a dedicated educator. This study focuses on how she has combined Western compositional techniques with elements of Eastern traditional music in some of her compositions, in particular, her Variations pour piano "Umma ya, Nuna ya." An interpretation of her Variations pour piano "Umma ya, Nuna ya" reveals that the composition features many of the particular and sublime aspects of Western compositional techniques in conjunction with traditional Korean music style. This study is an investigation of the interaction and assimilation of these disparate elements. The results of this study may inspire further research into traditional Korean music and bring recognition to important Korean composers, as well as encourage music educators to teach Korean composers' compositions.
Idiographic Temporal Dynamics of Posttraumatic Stress Disorder (PTSD) Symptom Dimensions in Daily Life
Authors:   , Schuler Keke
Published: February 2025

Understanding temporal relations among posttraumatic stress disorder (PTSD) symptom dimensions has received increasing attention in research. However, current findings in this area are limited by group-level approaches, which are based on inter-individual variation. PTSD is a heterogeneous syndrome and symptoms are likely to vary across individuals and time. Thus, it is important to examine temporal relations among PTSD symptom dimensions as dynamic processes and at the level of intra-individual variation. The aim of the present study was to capture temporal dynamics among PTSD symptom dimensions at an individual level using unified structural equation modeling (uSEM). World Trade Center (WTC) 9/11 responders (N = 202) oversampled for current PTSD (18.3% met criteria in past month) were recruited from the Long Island site of the WTC health program. Using ecological momentary assessment (EMA), PTSD symptoms were assessed three times a day over seven consecutive days. The person-specific temporal relations among PTSD symptom dimensions were estimated with individual-level uSEM. For the sample as a whole, hyperarousal played a key role in driving the other three symptom dimensions longitudinally, with the strongest effect in intrusive symptoms. However, daily temporal relations among PTSD symptoms were idiosyncratic. Although hyperarousal was a strong predictor of subsequent symptom severity, only 33.95% of the sample showed this predictive effect while others showed more evident temporal relations between intrusion and avoidance. Implications for personalized health care and recommendations for future research using individual-level uSEM in psychopathology are discussed.
The Hybrid Hero in Early Modern English Literature: A Synthesis of Classical and Contemplative Heroism
Authors:   , Ponce Timothy Matthew
Published: February 2025

In his Book of the Courtier, Castiglione appeals to the Renaissance notion of self-fashioning, the idea that individuals could shape their identity rather than relying solely on the influence of external factors such as birth, social class, or fate. While other early modern authors explore the practice of self-fashioning—Niccolò Machiavelli, for example, surveys numerous princes identifying ways they have molded themselves—Castiglione emphasizes the necessity of modeling one's-self after a variety of sources, "[taking] various qualities now from one man and now from another." In this way, Castiglione advocates for a self-fashioning grounded in a discriminating kind of synthesis, the generation of a new ideal form through the selective combination of various source materials. While Castiglione focuses on the moves necessary for an individual to fashion himself through this act of discriminatory mimesis, his views can explain the ways authors of the period use source material in the process of textual production. As poets and playwrights fashioned their texts, they did so by consciously combining various source materials in order to create not individuals, as Castiglione suggests, but characters to represent new cultural ideals and values. Early moderns viewed the process of textual, as well as cultural production, as a kind of synthesis. Creation through textual fusion is particularly common in early modern accounts of the heroic, in which authors synthesize classical conceptions of the hero, which privilege the completion of martial feats, and Christian notions of the heroic, based on the contemplative nature of Christ. In this dissertation, I demonstrate how Thomas Kyd in The Spanish Tragedy (1585), Edmund Spenser in The Faerie Queene (1590), William Shakespeare in Titus Andronicus (1594), and John Milton in A Mask Presented at Ludlow Castle (1632) syncretized classical and Christian notions of the heroic ideal in order to comment upon and shape political, social, and literary discourses. By recognizing this fusion of classical heroism with contemplative heroism, we gain a more nuanced understanding of the reception of classical ideas within an increasingly secular society.
Furyous Female Just-Warriors of Post-Apocalypse and Dystopia
Authors:   , Lynch Shaylynn
Published: February 2025

The intention of this thesis is to identify and analyze the precise shift from an exploitative archetype to an empowered representation of women warriors, to identify the arena in which male and female characters are given equal agency in the context of war, and finally explore the key characteristics that make up an empowered female hero. This thesis also addresses the sociocultural nature of the warrior woman archetype as it pertains to the current role of women in the military. The films analyzed in this thesis are all post 9/11 films; a fact that links them culturally to the wars in Iraq and Afghanistan. In recent years, numerous milestones have been reached for women in the armed services, especially for those women in combat positions. For the first time in American history women are being recognized for their active role as soldiers in combat. Therefore, it is valid to consider the correlation between seeing women as military professionals, fighting alongside male soldiers in these films, and the cultural impact of female combat soldiers. This aspect of the thesis also imbues the female just-warrior archetype with a legitimate history, mythology, and current cultural reference; which is essential to the visibility of female combat soldiers of the 21st century.
A Pedagogical Analysis of Articulation, Balancing, Voicing, and Interpretation in Giuseppe Concone's Vingt Études Chantantes, Op. 30, for Upper Intermediate Piano Students
Authors:   , Cao Chenyi
Published: February 2025

Giuseppe Concone's piano études number over a hundred, and are collected in seven various sets. They consist of pieces for elementary, intermediate, and advanced level pianists. A few of them have been printed in anthologies but most of them remain unknown. The present research consists of two parts: an overview of Concone's complete sets of piano études, and a detailed analysis of Op. 30, with a detailed focus on articulation, balancing, voicing, and interpretation. First is a brief overview of the Études Opp. 37, 46, 24, 25, 31 and 34. Then in the analysis of Op. 30, after explaining the salient features of this set of études, there is an illustration of the method by giving an analysis of each étude. Concone's Vingt Études Chantantes Op. 30 are a fine supplement of teaching repertoire for the intermediate piano students. The Op. 30 incorporates a diversity of technical requirements and musical merits that can help students transition from intermediate level to early-advanced level. They may also contribute to being aware of binary and ternary forms, and prepares students for learning other genres of the 19th century piano literature.
Analysis and Performance of a Cyber-Human System and Protocols for Geographically Separated Collaborators
Authors:   , Jonnada Srikanth
Published: February 2025

This dissertation provides an innovative mechanism to collaborate two geographically separated people on a physical task and a novel method to measure Complexity Index (CI) and calculate Minimal Complexity Index (MCI) of a collaboration protocol. The protocol is represented as a structure, and the information content of it is measured in bits to understand the complex nature of the protocol. Using the complexity metrics, one can analyze the performance of a collaborative system and a collaboration protocol. Security and privacy of the consumers are vital while seeking remote help; this dissertation also provides a novel authorization framework for dynamic access control of resources on an input-constrained appliance used for completing the physical task. Using the innovative Collaborative Appliance for REmote-help (CARE) and with the support of a remotely located expert, fifty-nine subjects with minimal or no prior mechanical knowledge are able to elevate a car for replacing a tire in an average time of six minutes and 53 seconds and with an average protocol complexity of 171.6 bits. Moreover, thirty subjects with minimal or no prior plumbing knowledge are able to change the cartridge of a faucet in an average time of ten minutes and with an average protocol complexity of 250.6 bits. Our experiments and results show that one can use the developed mechanism and methods for expanding the protocols for a variety of home, vehicle, and appliance repairs and installations.
Educational Technology: A Comparison of Ten Academic Journals and the New Media Consortium Horizon Reports for the Period of 2000-2017
Authors:   , Morel Gwendolyn M.
Published: February 2025

This exploratory and descriptive study provides an increased understanding of the topics being explored in both published research and industry reporting in the field of educational technology. Although literature in the field is plentiful, the task of synthesizing the information for practical use is a massive undertaking. Latent semantic analysis was used to review journal abstracts from ten highly respected journals and the New Media Consortium Horizon Reports to identify trends within the publications. As part of the analysis, 25 topics and technologies were identified in the combined corpus of academic journals and Horizon Reports. The journals tended to focus on pedagogical issues whereas the Horizon Reports tended to focus on technological aspects in education. In addition to differences between publication types, trends over time are also described. Findings may assist researchers, practitioners, administrators, and policy makers with decision-making in their respective educational areas.