Digital Commons Network^™

Phytoplankton Community Of Boalia Khal Tributary Of The Halda River, Chattogram, Bangladesh, Md. Shafiqul Islam, M.A. Azadi, Munira Nasiruddin

Journal of Bioresource Management

Boalia Khal is one of the important tributaries of the River Halda. The productivity of the Boalia Khal tributary of the Halda River mainly depends on the phytoplankton diversity. A study was conducted for two years period from January 2017 to December 2018 to identify the phytoplankton community of the Boalia Khal tributary. A total of 61 species of phytoplankton under 37 genera belonging to 8 classes were recorded. The dominant group of phytoplankton was 25 species of Diatoms (40.98 %) followed by 18 species of Green Algae (29.5 %), 9 species of Euglenophytes (14.75 %), 7 species of Blue …

Distribution Network Planning And Operation With Autonomous Agents, Abdulraheem Hassan Alobaidi

Electrical Engineering Theses and Dissertations

With the restructured power system, different system operators and private investors are responsible for operating and maintaining the electricity networks. Moreover, with incentives for a clean environment and reducing the reliance on fossil fuel generation, future distribution networks adopt a considerable penetration of renewable energy sources. However, the uncertainty of renewable energy sources poses operational challenges in distribution networks. This thesis addresses the planning and operation of the distribution network with autonomous agents under uncertainty. First, a decentralized energy management system for unbalanced networked microgrids is developed. The energy management schemes in microgrids enhance the utilization of renewable energy resources …

Orbital Angular Momentum Orthogonality-Based Crosstalk Reduction: Theory And Experiment, Unaiza Tariq

Electrical Engineering Theses and Dissertations

Full duplex communication systems allow a single channel to be used for simultaneous two-way communication, increasing spectral efficiency. However, full duplex communication systems suffer from the issue of self-interference between local transmitter and receiver antennas. Analog subtraction and signal processing methods have previously been used to reduce this problem. This dissertation proposes the use of waves carrying orbital angular momentum (OAM) to mitigate the problem of self-interference by offering a means of additional isolation between local antennas.

Orbital angular momentum has been widely studied both in the photonics and radio domain. The theoretically infinite orthogonal states of an OAM signal …

Distribution Network Operation With Solar Photovoltaic And Energy Storage Technology, Mohammad Ramin Feizi

Electrical Engineering Theses and Dissertations

Among distributed energy resources, solar photovoltaic (PV) generation has the largest penetration in the distribution networks. Serving electric vehicles (EV) with renewable resource generation would further reduce the carbon footprint of the energy supply chain for electric vehicles. However, the integration of solar PV and EVs in the unbalanced distribution network introduces several challenges including voltage fluctuations, voltage imbalances, reverse power flow, and protection devices’ malfunctions. The uncertainties associated with solar PV integration and electric vehicles operation require significant effort to develop accurate optimization methodologies in the unbalanced distribution systems operation. In this thesis, in order to cope with the …

Development And Application Of A Design Flow For Photonic Integrated Circuits, Ifeanyi Achu

Electrical Engineering Theses and Dissertations

Silicon photonics allows for the fabrication of many optical elements on a single photonic integrated circuit (PIC). By taking advantage of the established foundry technology used in the CMOS and silicon’s high refractive index, high feature density manufacturing can be achieved in mass quantities. In CMOS fabrication, from conception of an electronic circuit to testing, the process of designing an electronic circuit is dictated by a design flow which has been developed over the course of decades. This flow includes circuit level design and simulation, layout of the circuit, layout and verification of the chip, fabrication, packaging, and testing. Given …

An Investigation Of The Role Of System Effectiveness In The Acquisition And Sustainment Of U.S. Defense Systems: 1958 To 2022, John Green

Operations Research and Engineering Management Theses and Dissertations

This dissertation investigates the role of the system effectiveness methodology in acquiring and sustaining U.S. military weapons systems from 1958 to 2021. The period of interest has seen numerous changes in both the acquisition process and the application of system effectiveness to acquisition and sustainment. Several of the changes were disruptive, including shifting acquisition and sustainment to a commercial paradigm and completely overhauling the approach to acquiring new systems. The method of inquiry integrated three qualitative methods–structured literature review, grounded theory analysis, and historiography–into an innovative approach for investigating the changes to system effectiveness. The database for the investigation was …

The Challenge Of Change, Eric F. Spina

President's Blog: From the Heart

"Some people are book-smart, but lack empathy, kindness and mercy. You cannot go about transforming the world — which is ultimately your assignment when you leave today — without both," President Eric Spina told the Class of 2022 at winter commencement. "As Flyers, you’re called to use your minds and hearts to work across disciplines and differences to make the kind of profound change the world needs."

Jam – Winter 2022, Rafat Jan, Edwin Van Teijlingen, Kiran Mubeen, Abeer Musaddique

Journal of Asian Midwives (JAM)

No abstract provided.

Surprise Gift Benefits Two Um Programs, Bill Dabney

University of Mississippi News

No abstract provided.

Ela High School Teacher Beliefs About Academic Language Learning, Wendy Aro

Doctorate in Education

The enrollment of English learners (ELs) in K-12 schools in the United States continues to surpass all other student groups reshaping U.S. public schools (National Center for Education Statistics, 2017). Research suggests while learning English, ELs fall behind academically, which can determine how long an EL remains in an English learner program (Wixom, 2014). Educators and leaders are faced with the challenges associated with EL education including professional development, retaining EL specialized teachers, and designing, implementing, and evaluating EL service models. Other challenges include ensuring EL access to grade-level content standards while simultaneously developing the language of the subject area. …

Prioritizing Prosocial Behavior For Preschool Children: How Are Parents Affecting Psb Development?, Deborah Zupito

Doctorate in Education

Scholars and Early Childhood Education (ECE) professionals acknowledge the critical nature of prosocial behavior (PSB) skills in the lives of preschool-aged children. Research specifies that children lacking PSBs are socially and academically disadvantaged. Studies have shown that 30% of preschoolers exhibit negative emotional/social behavior, and 80% of preschool educators report negative social behaviors (NSBs) adversely affecting their jobs. It is well-researched that a child's earliest experiences shape social and emotional behaviors, explicitly parenting and the home environment; however, less research exists about parents' knowledge and perception of their role relating to PSB development in their child's life. This qualitative case …

Void-Semiconductor Gaas Photonic Crystal Surface-Emitting Lasers By Epitaxial Regrowth And Single-Epitaxy Methods, Kevin James Reilly

Nanoscience and Microsystems ETDs

Monolithic semiconductor lasers including edge-emitting lasers (EELs) and vertical-cavity surface-emitting lasers (VCSELs) fail to realize simultaneous achievement of both high-power high-quality beams due to intrinsic limitations of their resonant cavity. Photonic crystal surface emitting lasers (PCSELs) address these structural limitations through employment of a two-dimensional photonic crystal (PC) cavity that creates feedback at a single wavelength for laterally scalable devices. This function of the PC allows PCSELs to power scale with area while maintaining single-mode emission required for diffraction-limited beams. In this way, PCSELs fulfill an industry demand for high-power high-quality lasing from a single chip.

Early PCSELs were fabricated …

The Pain Of Helping: Crisis Response Teams Experiences With College Student Suicide, Audra E. Dowling

Graduate Theses, Dissertations, and Capstones

This qualitative multicase study explores the lived experiences of seven higher education professionals who serve or have served on a crisis response team at the time of a college student suicide. It asks the following research question: How has a college student suicide impacted the individual psychological needs (safety, trust, esteem, intimacy, control) of those serving on a crisis response team? Using constructivist self-development theory (McCann & Pearlman, 1990) as a lens, psychological needs have been analyzed as fulfilled needs or distorted needs across two interviews and three journaling prompts to assess the impact on seven participants in this qualitative …

Implications Of Spatial Population Dynamics For Abundance Estimation And Catch Apportionment Of Alaska Sablefish (Anoplopoma Fimbria), Kari Hammarsten Fenske

Fisheries

Spatial dynamics in fish populations are challenging to identify and incorporate into population dynamics models due to the large amount of data required and the uncertainty associated with spatial processes. However, ignoring spatial dynamics can result in biased population estimates and negatively affect population sustainability or the ability to meet fishery management goals. My research explored implications of spatial dynamics for the assessment and management of Alaska sablefish (Anoplopoma fimbria). Sablefish are highly mobile, targeted in commercial and recreational fisheries, and documented to have spatial variation in population dynamics such as abundance and biomass. However, gaps remain in understanding the …

Compound-Specific Stable Isotopes Of Amino Acids Reveal The Influence Of Trophic Level And Primary Production Sources On Mercury Concentrations In Fishes From The Aleutian Islands, Alaska, N/A N/A

Marine Biology

Total mercury (THg) concentrations exceed thresholds of concern in some Steller sea lion (Eumetopias jubatus; SSL) tissues from certain portions of the Aleutian Islands, Alaska. Here, compound-specific stable isotope analyses (CSIA) of carbon in essential amino acids ([delta]¹³CEAA values) and nitrogen in AAs ([delta]¹⁵NAA values) in fish muscle tissue was applied to quantify the proportional contributions of primary production sources and trophic positions of eight prey species (n = 474 total) that are part of SSL diets. Previous THg analyses of fish muscle, coupled with additional monomethylmercury (MMHg) analyses of a subset of samples, substantiated previous findings that fishes from …

“Women Who Speak With The Power And Authority Of God”: The Role Of Women In The Northern Indian Mission, 1964-1973, Amber Miller

Student Works

Since the Church's founding in the early 19th century, numerous historians have chronicled the story of "Lamanite" Missions for the Church of Jesus Christ of Latter-day Saints. Most of these Indian Mission histories, however, mention little more about women than missionaries marrying Native women, and non-native women receiving blessings that they will one-day teach the "Lamanites." Although the continuing conversation of these historic missions covers a wide range of views and interpretations, the roles and contributions of women often take a subordinate position in the Indian Mission narrative. The Northern Indian Mission of 1964 to 1973 serves as a microcosm …

Shifts In Microbial Community Composition During The 2019 Pacific Marine Heatwave In The Northern Gulf Of Alaska, Jacob Cohen

Oceanography

Climate change has led to a gradual increase of sea surface temperatures in the Northern Gulf of Alaska (NGA) interspersed with marine heatwaves (MHW) that impose a rapid but temporary perturbation of sea surface temperature. MHWs have the potential to alter marine microbial community structure, which may impact the production and transfer of carbon to higher trophic levels. The year 2019 was characterized as an MHW in the North Pacific, with sea surface temperatures in the NGA reaching ~2.5 º C above average during 2019 and ~1 º C above average during 2020, while 2021 had near-average sea surface temperatures. …

A Horn Microstrip Transmission Line For The Characterization And Investigation Of Multipactor At Various Pressure And Power, Shaho Hamadamin

Electrical and Computer Engineering ETDs

The University of New Mexico is designing, building, and testing a multipactor testbed based on a horn-microstrip transmission line to characterize and investigate the multipactor effect for a range of vacuum pressures and power. A horn-shaped, 50 Ω Al microstrip line is positioned inside a six-way cross stainless-steel chamber that is vacuumed down to low ~10−7 torr. A 100 𝑀𝑀𝑀𝑀𝑀𝑀 sine signal is fed to a rf amplifier with a bandwidth of 250 − 105 𝑀𝑀𝑀𝑀𝑀𝑀, that can reach 120𝑊𝑊 average (CW) power. Two multipacting detection methods, i.e., global, and local methods, are implemented for accurate multipaction detection. The former …

Freshwater Pressures On Pacific Salmon In The Coastal Watersheds Of Alaska, Christopher J. Sergeant

Fisheries

This dissertation explores the implications of a warmer and wetter climate on the freshwater life stages of Pacific salmon (Oncorhynchus spp.) in the focal region of southern coastal Alaska. Recent trends and long-term climate change predictions support the notion that arctic and subarctic watersheds will be subject to warming air temperatures, increased rainfall in the autumn and winter, diminishing snowpack, and continued glacial recession. Such atmospheric and terrestrial changes will shift patterns of streamflow, water temperature, and habitat diversity that comprise the basic building blocks of freshwater ecosystems that support Pacific salmon. Alaska's Pacific salmon populations sustain a multi-billion-dollar economy …

Thermokarst-Pond Plant Community Characteristics And Effects On Icewedge Degradation In The Prudhoe Bay Region, Alaska, Emily Watson-Cook

Biological Sciences

Ice-wedge thermokarst ponds are forming in many areas of the Arctic as a result of climate warming and infrastructure development. Previous research suggests that development of aquatic vegetation within these ponds may create negative feedbacks to the process of ice-wedge degradation by reducing pond-bottom temperatures and thaw depths. The objectives of this research were to characterize thermokarst-pond plant communities and to evaluate the effects of vegetation on within-pond sediment temperatures and thaw depths. Aquatic vegetation was sampled in 39 plots within 29 thermokarst ponds in the Prudhoe Bay region of Alaska. Five floristically distinct plant communities were identified: Calliergon richardsonii …

A Design And Implementation Of A Low-Power Embedded System For Data Collection In An Airborne Sea Ice Thickness Observing System, Thimira Sanuka Asurapmudalige

Engineering

The Long-Range Airborne Snow and Sea Ice Thickness Observing System (LASSITOS) is an airborne electromagnetic (AEM) system, currently under development, which uses a customdesigned instrument mounted on an Unmanned Aerial System (UAS) to measure Arctic sea ice and snow thickness. This project requires specialized instruments that are both low-power and lightweight. This thesis describes a design and implementation of a prototype data logging system based on an ultra-low power microcontroller, for the LASSITOS instrument. Three 32-bit Analog-toDigital Converter (ADC) integrated circuits (IC) are used to sample and convert the receiving EM signal at a rate of 19200 SPS. The system …

Pandemic Reflections: Stories Of National Ffa Student Leaders During The Covid-19 Pandemic, Theresa Seibel

Senior Honors Projects, 2020-current

The impacts of the COVID-19 pandemic were felt by most every individual in the world, and the effects of the pandemic will have implications for years to come. Even still, it becomes necessary to capture the work and impacts of this life experience of those who lived and led during such a time. The National FFA Organization, with its student leadership, continued to deliver its mission of the organization during the pandemic. This project aimed to develop a digital narrative to contribute to the historical record of FFA officers’ experiences in the National FFA Organization during the COVID-19 pandemic.

The …

Musikah V’Ḥalil, “Music And The Flute”: The Use Of Jewish Prayer In Flute And Piano Music, Kathryn L. Rudnik

Dissertations, 2020-current

Music has been a part of Jewish life since Biblical times and remains an integral part of the culture. Within Jewish music, instruments have also played an important role historically. The flute has been traced through Judaism back to Biblical times; however, it has lost prominence in modern synagogue and religious services. As Western music has developed into the twenty-first century, composers, both Jewish and Gentile, have been exposed to the music of the Jewish communities, some of whom have utilized it in their own compositions. Compositions based on Jewish prayer melodies have brought up the question of whether the …

Activist, Entrepreneur, Leader: The Influence Of Social Justice Advocacy And Entrepreneurial Orientation On Leader Self-Efficacy, Kathleen Q. Johnson

Dissertations, 2020-current

This quantitative study examined individual entrepreneurial orientation and social justice advocacy as antecedents to leader self-efficacy in the complex and dynamic context of the opioid epidemic. Throughout history, leaders have emerged in response to societal challenges; leadership is not restricted to the boundaries of hierarchical, administrative, bureaucratic organizational frameworks. Complexity leadership theory and its recognition of leadership in complex adaptive systems provides an overarching framing. Five characteristics of individual entrepreneurial orientation were incorporated: risk-taking, innovativeness, perseverance, passion and proactiveness (Santos et al., 2020). Social advocacy activity was measured using the social issues advocacy scale (Nilsson et al., 2011). The dependent …

Identifying Systems Of Support In High Schools For Gender And Sexually Diverse Youth Living In Conservative Communities: A Phenomenological Qualitative Study, Nuriyah Bender

Masters Theses, 2020-current

Within the first few months of 2022 more than 300 anti-LGBTQ+ bills were introduced in states across the country (Human Rights Campaign, 2022). Many of these bills, some of which are now laws, discriminate against transgender students or restrict instruction and materials related to LGBTQ+ topics in schools. Gender and Sexually Diverse (GSD) students often do not feel safe in schools (Kosciw et al., 2020). Using a phenomenological approach, this qualitative study sought to identify the factors that helped GSD students feel the most supported in high schools in order to assist educators with actionable ways they can support students …

Cryptic Population Structure And Differentiation In Three Species Of Alaska Claytonia, Robert W. Gabbitas

Biological Sciences

Beringia is an extensive geographic region noted for high levels of taxonomic complexity among closely related species. Three such species distributed across Beringia (Claytonia arctica, C. scammaniana, and C. sarmentosa,) exhibit low morphological differentiation between the species, while C. scammaniana includes two additional described morphologies of questionable taxonomic standing, C. "noatakensis" and C. "porsildii". Taxonomic boundaries within this group have been historically disagreed upon and are susceptible to confounding factors such as isolation-by-distance (IBD), discontinuous sampling of continuous variation, and low sequence divergence and morphological differentiation. To assist in species delimitation, multiple approaches combining phylogenomics and spatially explicit population genetics …

Exploring The Evolution Of Fishes At High Latitudes, Anna S. Rix

Biological Sciences

Fish species found in high latitude waters are especially vulnerable to climatic changes due to their inability to regulate body temperature and long evolution in cold, oxygen-rich aquatic environments. Antarctic notothenioid fishes have evolved to thrive in an extremely stable, cold, oxygen-rich environment. Likewise, lake trout live in a cold, oxygen-rich environment, but commonly experience a wider range of temperatures than notothenioids. Millions of years of evolution in the cold have shaped the genetics of these fishes, but the effects on their biology remain largely unexplored. This dissertation seeks to learn from the past evolution of these two evolutionarily distant …

Development Of An Active Vacuum Insulation Panel For Use In Building Applications, Haley D. Nelson

Engineering

Vacuum insulation panels, or VIPs, are among the highest performing forms of building insulation available on the commercial market, with some per inch R-values advertised as 60°F·ft²·hr/(BTU·inch). Though there is strong market demand for high-performing forms of insulation, the adoption of VIPs is hindered by their relatively high costs, uncertain service lifespans, sensitivity to internal pressure changes, susceptibility to thermal bridging along their edges, and other issues. Particularly in building applications, typical VIPs are often passed over in favor of insulation types that can be easily customized on-site, are produced to larger dimensions, and are not as vulnerable to damage …

Toward An Informal Informed Classrooms: Professional Musicians' Informal Music Learning Experiences, Rachel M. Smith

Masters Theses, 2020-current

Authors have studied informal music learning with different age groups. Lucy Green (2005) studied the topic with adolescents and identified it an intuitive and natural way children learn. Chad West and Radio Cremata (2016) studied informal music learning at the collegiate level, and Martina Vasil (2019) studied secondary music teachers who implemented informal music learning strategies in their teaching practices. Informal music learning in adults is relatively under-explored compared to adolescent and collegiate age groups. Utilizing lenses drawn from John Dewey’s curricular ideas to help students find meaning in learning and motivation as viewed through Self-Determination Theory, I sought to …

Two Studies On Binary Program Stylometry: A White-Box Analysis And A Deep Learning Analysis On Some Crypto Ransomware, Alexander Mitchell

Masters Theses, 2020-current

Computer programmers often leave their individual programming styles in source code. Recent studies show that contrary to a popular belief, many of such programming styles can survive, in controlled environments, code compilation into binary. From the binary programming styles can be effectively retrieved for enhanced binary authorship attribution; such binary authorship attribution is often called binary program stylometry. In this thesis, we first perform a white-box impact analysis of various factors in code compilation on programming styles. For the MS Windows platform, we study the impact of multiple compilers, including gcc, Clang, and MSVC, their optimization levels, symbol stripping, and …