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Quantitative Imaging of Point-Like Targets
No full textDinh-Liem NguyenThe inverse medium scattering problem has multiple important applications across various scientific domains, such as radar, sonar, and nondestructive testing. The goal of the project is to use scattered waves on a measured boundary to construct an imaging function capable of approximating the location and scattering strengths of point scatterers. The approach to this problem utilizes the sampling-type method developed by Dr. Nguyen and his collaborators, which is recognized for its speed and robustness against noisy data. I studied multiple equations in order to understand the construction and the proof behind the imaging function; some included the Sommerfield radiation condition and the Green function. Once given the scattered wave data and its normal derivative, the point’s location and scattering strengths can be determined. The wave-based imaging method determines that the point scatterers are located on a large domain, which is discretized by using a set of sampling points z. The imaging function will approximately indicate when points z reach the scatterers. Once z reaches a scatterer, the imaging function will output a numerical result greater than zero, and when it does not reach a scatterer, it will output zero. This result occurs due to the usage of the Bessel function in the imaging function, where the output peaks at z equaling the point and it quickly decays as the absolute value of z minus x approaches infinity. Now that the imaging function is proven to find the scatterer’s location, alternative equivalents are written to solve for the scattering strengths of the point scatterer. Using the imaging function, we reconstructed point-like targets while knowing their location and scattering strength to test the viability of the function. A percentage relative error was included in the estimation of the point scatterer location and strength. The process of reconstruction was repeated with differing points within the domain (-2,2)x(-2,2), as well as differing scattering strengths and noise levels. All results stayed at or below a 10 percent relative error, therefore letting us conclude the imaging function was successful. Figure 1 and Figure 2 displays the successful reconstruction of the points (-0.5, 0.5) and (1, -1)
Proof-Theoretic Validity isn’t Intuitionistic; So What?
No full textSeveral recent results bring into focus the superintuitionistic nature of most notions of proof-theoretic validity, but little work has been done evaluating the consequences of these results. Proof-theoretic validity claims to offer a formal explication of how inferences follow from the definitions of logic connectives (which are defined by their introduction rules). This paper explores whether the new results undermine this claim. It is argued that, while the formal results are worrying, superintuitionistic inferences are valid because the treatments of atomic formulas are insufficiently general, and a resolution to this issue is proposed
Involuntary major changes: student narrative about what helped and hindered their adaptability
Full text linkDoctor of PhilosophyDepartment of Special Education, Counseling and Student AffairsWendy G. TroxelCareer services professionals and academic advisors support students as they pursue their goals. Yet, scholars know little about the lived experiences of students placed into alternative degree programs after they fail to secure admission or are rescinded from a selective or regulated professional program such as nursing, teaching, or social work. This narrative inquiry study examines the critical events of participants who survived unplanned academic loss included in stories about their undergraduate education. Individual interviews with participants humanized and brought voice to their coping strategies, barriers, career decision-making, and persisting toward graduation. Higher education leaders can use the findings to foster policy revisions, cross-departmental well-being collaboration, and strategic support during individual conversations with students coping with change
Environmental & architectural phenomenology. Vol. 35, issue 2
No full textThe summer-fall 2024 issue of ENVIRONMENTAL & ARCHITECTURAL PHENOMENOLOGY celebrates 35 years of publication and includes the following items: Philosopher Ingrid Leman Stefanovic provides a celebratory commentary on 35 years of EAP. EAP editor David Seamon draws on philosopher Paul Ricoeur’s “hermeneutics of restoration of meaning” as one thematic means to identify EAP’s major aim over the years. Geographer Edward Relph considers artificial intelligence as it might be critiqued via the thinking of philosopher Hannah Arendt and her insights on modernity’s invention of totalitarianism. Philosopher Kenn Maly examines the phenomenon of water via the four qualities of substance, flow, non-duality, and freedom. Chinese geographers Xu Huang and Zichuan Guo offer an ethnographic picture of Chengdu, China’s He-Ming Teahouse, opened in 1923. Artist and writer Vicki King considers how the paintings of Canadian-American abstract-expressionist artist Agnes Martin “evoke sensual memories of New Mexico.
A Formal Report Exploring the Addition of Endoscopic Suturing as an Anti-Migration Feature for Boston Scientific's VICI Venous Stent System
No full textKirmser Undergraduate Research Award - Individual Non-Freshman category, grand prizePhillip MarzlufSubmitted to the Senior Vice and President and President of Boston Scientific's Interventional Cardiology Therapies division, this report explores the product failure of the VICI VENOUS STENT System from the perspective of a device development engineer. Key sections include reasons for design failure, the benefits and drawbacks associated with a product recall, as well as identified solutions through a new R&D interdisciplinary team to support Boston Scientific's mission in transforming lives through innovative solutions. Through countless submission in English 415, this Formal Report showcases the final exploration into the FDA's Device Development Process, which I will be directly entering in my new role after Graduation
Therapeutic Strategies for Ankylosing Spondylitis (AS)
No full textKirmser Undergraduate Research Award - Individual Non-Freshman category, grand prizeTheresa Merrick CassidyThis literature review investigates emerging therapeutic strategies for Ankylosing Spondylitis (AS), a progressive autoimmune disease marked by chronic spinal inflammation and pathological bone formation. Traditional biologic treatments reduce inflammation but do not regenerate damaged tissue or halt disease progression. This review explores two emerging therapeutic strategies—regenerative tissue engineering and targeted drug delivery—as innovative approaches for AS treatment. By analyzing recent literature involving mesenchymal stem cells, extracellular vesicles, biomaterial scaffolds, and nanoparticle-based drug systems, the paper evaluates how these technologies—successfully applied in other medical fields—could be adapted to AS. The findings highlight the potential of hybrid therapeutic solutions that address both immune modulation and tissue regeneration, offering a pathway toward more effective and lasting clinical outcomes
Mobilizing the next generation of media leaders: Social support and social capital building increases job satisfaction and loyalty among early-career employees
No full textThe media industry has been disrupted, challenging how young people interact with others in the workplace and develop their professional networks. This study addressed how media managers can support young workers from a social capital perspective. Concepts in the social capital model of organizational socialization were measured through a survey (N = 136) of media professionals in the first five years of their professional careers. Results revealed that social support within organizations helps young people build social career capital. Social career capital also predicted career adaptability, professional self-efficacy, job satisfaction, and employee loyalty. Managerial and theoretical implications are discussed
Analysis of Time Dependent Effects in Radiation Epidemiology
No full textStarting with radium watch dial painters in the 1920s, numerous diverse populations have been monitored following significantly-above-background radiation exposures. It is well founded that doses exceeding 100 mGy have potential to induce negative health outcomes in humans. Health effects resulting from radiation doses below this level are not as well understood. Consequently, risks for outcomes in the 0-100 mGy low-dose range are often approximated by linear extrapolation to zero dose. This practice is known as the “linear no-threshold” model. Existing research related to the linear no-threshold model is discussed thoroughly in NCRP Commentary 27 (NCRP 2018)
Perspectives of the California community colleges historically Black colleges and universities transfer guarantee program
No full textDoctor of EducationDepartment of Educational LeadershipChristine McPhailThe purpose of this study was to explore constituent perspectives of the California Community Colleges Historically Black Colleges and Universities Transfer Guarantee Program. The researcher queried representatives from participating community colleges and Historically Black Colleges and Universities regarding their perspectives of the program. The California Community Colleges Historically Black Colleges and Universities Transfer Guarantee Program's goal is to educate students about additional transfer opportunities at these institutions and develop pathways that will ultimately increase baccalaureate degree attainment.
The conceptual framework guiding this study was the 2013 Hanover Research Report on Strategies for Recruiting Community College Transfer Students. In this seminal report, the 2013 Hanover Research Report on Strategies for Recruiting Community College Transfer Students presented best practices for recruiting and marketing to community college transfer students, including information on credit evaluation policies at several four‐year institutions. A qualitative research method was used to conduct this study.
Three central research questions guided this study:
1. How do participants describe the California Community Colleges Historically Black Colleges and Universities Transfer Guarantee Program in providing California Community College students additional transfer opportunities at HBCUs?
2. How do participants describe the California Community Colleges Historically Black Colleges and Universities Transfer Guarantee Program in developing pathways to increase baccalaureate degree attainment?
3. How did participants' descriptions of the California Community Colleges
Historically Black Colleges and Universities Transfer Guarantee Program align with the recommended practices in the 2013 Hanover Research Report on Strategies for Recruiting Community College Transfer Students?
The findings from this study revealed that the participants described the California Community Colleges Historically Black Colleges and Universities Transfer Guarantee Program as having streamlined the transfer process and expanded transfer options. The participant's description of the program emphasized the program's contribution to increasing degree attainment through streamlined pathways and support systems. The participants also expressed doubts about the program’s effectiveness in addressing barriers to degree completion. The analysis of participants' descriptions of the transfer practices at participating intuitions revealed alignment with the 2013 Hanover Research Report on Strategies for Recruiting Community College Transfer Students.
The researcher proposed several recommendations: conduct a quantitative study focusing on a larger population of participants, conduct training for counselors participating in the program, and further investigate baccalaureate degree attainment
The assessment of athletic equity by head men’s and women’s coaches in the National Junior College Athletic Association
No full textDoctor of EducationDepartment of Educational LeadershipJennifer A SpielvogelTerry A. CalawayThroughout history, the foundation of athletics has remained consistent to provide the opportunity to compete and gain skills that will remain valuable throughout life. A significant change for athletics was over 50 years since President Richard Nixon signed Title IX of the Education Amendment (Title IX) into law in 1972 (Valentin, 1997). The purpose of this study was to aim to identify the current state and best practices of athletic equity implementation at National Junior College Athletic Association (NJCAA) DI and DII institutions. This study was composed of a mix-methods design that included a survey and interviews with head coaches of the following sports: men’s and women’s soccer, men’s and women’s basketball, men’s and women’s outdoor track and field, baseball, and softball to learn how head coaches assess athletic equity and identify best practices of athletic equity implementation. The findings of this study offer a unique perspective on how head coaches identify and assess athletic equity and best practice concepts that can be used for community college administrations nationwide to assist in the advancement of athletic equity