• Assessment Is Constructed and Contextual: A Faculty-Librarian Pilot to Explore Critical Approaches to Curriculum & Assessment

      Branch, Nicole; Pfeiffer, Loring; Voss, Julia; Santa Clara University (The University of Arizona, 2020-09-16)
      Students of color and marginalized-identifying students have more sophisticated critical information literacy skills across all dimensions compared to the comparison groups, reflecting greater cumulative awareness of: Journalistic/editorial best practices, Author expertise, Type of work (genre), Source research/evidence, Methods, Local sourcing, Diverse voices. Looking at specific dimensions of information literacy, Students of color and students who approach the research task as an opportunity to defend their own culture more frequently described the importance of including local voices in news reporting, compared to the comparison groups. Students of color and marginalized-identifying students more frequently critically evaluated the research/evidence of their sources than the comparison groups. Maginalized-identifying students more frequently considered authors' expertise when evaluating sources than mainstream-identifying students. Key Findings: 1. Students who self-identify as marginalized are better at critically assessing information than students who do not. Many approaches to assessment of student learning, even those that seek to operationalize critical approaches and an equity framework, persist in centering the deficiencies of marginalized students as a starting point, seeking to bring these learners “up” to what is perceived as “normative.” This finding reveals that marginalized students can also be the standard-bearers. 2. Interviews can be sites of meaning-making. Alternative assessment methods (in this case, interviews and grounded-theory methodologies) provide opportunities for educators and students to mutually engage in revealing assets of learners and meaning making that can help us (students and instructors) extend beyond/breakthrough academic conditioning. 3. Interviews offer opportunities for asset-based, anti-racist assessment. Alternative assessment methodologies may have particularly powerful implications for the development of learning outcomes that center the assets of students who are under-represented in the academy. The theme of “defending own culture” can be extrapolated to information literacy skills such as: Recognizing bias, Invoking one’s power as a producer of information, Countering stereotypical narratives.
    • Beyond Self-Care and Standardization: Creating a Sustainable Teaching Practice through Engaged Pedagogy

      Arellano Douglas, Veronica; Deal, Emily; Hernandez, Carolina; University of Houston (The University of Arizona, 2020-09-16)
      Conversations around sustainable teaching practices either focus on self-care, placing responsibility for well-being on librarians; or program efficiency, which creates work environments that create business-like models for standardization of teaching programs. This framing of sustainability is reactive and harmful -- we are working within existing power structures and dynamics rather than imagining ways to share power and create space for engaged pedagogy. bell hooks introduces the concept of engaged pedagogy as a model of education that “does not seek to simply empower students… [but] will also be a place where teachers grow and are empowered by the [learning] process” (p. 21). It’s a feminist expansion of critical pedagogy that takes into account the personhood of the teacher as well as the student, creating a co-learning environment rooted in mutual respect where intellectual and personal development can flourish. This discussion session moves beyond typical sustainability conversations to develop ideas for positive change in library teaching programs with the goal of creating generative, healthy work practices
    • Extensions for Everyone: Syllabus Policies that Center Accessibility

      Wong, Melissa; University of Illinois at Urbana-Champaign (The University of Arizona, 2020-09-14)
      Instructors who embrace critical pedagogy work to create inclusive learning environments and dismantle barriers to education. Ironically, one such barrier can be the formal accommodations process that was created to ensure equitable access for student with disabilities (only a fraction of students with disabilities request needed accommodations). In order to better serve students with disabilities, many instructors have adopted Universal Design for Learning (UDL) and a proactive approach to accessible course design. Instructors implementing UDL often focus on the accessibility of course materials and using varied and inclusive pedagogical strategies. However, instructors may overlook the central role course policies play in accessibility. In fact, many common accommodations are a direct response to instructor policies. For example, instructors may be asked to grant an extension for a due date if a student experiences exacerbation of a chronic illness; however, this accommodation only exists as a standard accommodation because of instructors’ often inflexible policies around attendance and deadlines. In this talk, I identify course policies that create barriers for students with disabilities and show how instructors can adopt more flexible course policies that support inclusion and student success while decreasing the need for formal accommodations. Reference: Dolmage, Jay Timothy. Academic Ableism: Disability and Higher Education. Ann Arbor, MI: University of Michigan Press, 2017.
    • An Appeal to Kairos: Building a Sustainable Assessment Practice

      García, Sheila; Grand Valley State University (The University of Arizona, 2020-09-14)
      Perhaps one of the most common narratives among librarians is the difficulty of saying "no" and scoping our work appropriately. Fobazi Ettarh's work on "Vocational Awe" examined the roots of this problem critically and has spurred continued discussion around dismantling the framing of the library profession as a "calling" and valuing individual well-being. This approach to the issue of burnout and the glorifying of unsustainable practices can be particularly impactful within Social Justice work and more so, for traditionally underrepresented communities. This session will focus on an individual journey to build a sustainable assessment practice that centers the needs of an underserved community. To break the cycle of assessment practices solely benefitting academic discourse, the concept of Kairos - the "right" and/or opportune time do something - should guide practice to ensure intentional sustainability of our work. This lightning talk will walk through the journey of a Diversity Alliance resident librarian and her initial capstone project that focused on the experience of undergraduate language brokers in academia in order to inform first-year information literacy instruction. Recognizing that a short-term position would almost guarantee that results of research do not directly benefit the community that is studied, the research practice was reframed accordingly to a multi-year collaborative project. Participants will leave the session with a deeper understanding of the use of Kairos to reframe their practice, moving toward critical practice and intentional sustainability of assessment practice. Additionally, this talk will highlight an area of need within librarianship that has not been discussed as deeply, which is the need to ensure that results of library assessment, particularly assessment that uses a social justice lens, not only benefits but is communicated back to the populations that are directly affected, an approach that necessitates a sustainable research practice.
    • Do I have to have a librarian come to my class? Power imbalances and power moves in library instruction

      Arteaga, Roberto; Moeller, Christine M. (The University of Arizona, 2020-09-08)
      The question, “Do I have to have a librarian come to my class,” may be familiar to academic teaching librarians. At first, this question may be frustrating in multiple ways, but a thorough examination of the context behind the question can help identify the root and the broader implications of such questions. These types of questions highlight the structures that impact library instruction and reveal the ways in which power imbalances affect the work and mission of teaching librarians. In this interactive presentation, attendees will engage in a series of activities and discussions centered around the structures and power imbalances that are deeply embedded within higher education. Participants will dissect, analyze, and interpret questions and situations familiar to teaching librarians in order to begin formulating pedagogically meaningful responses. Through this exploration, participants will be able to identify the root of power imbalances and determine ways to foster change.
    • The library is not a restaurant: Reference appointments and neoliberal language

      Gardner, Carolyn Caffrey; Clarke, Maggie; California State University, Dominguez Hills (The University of Arizona, 2020-09-04)
      This presentation will detail research on “no-show” student research appointments with an eye towards how libraries can mitigate student perceptions of appointments as commercial transactions which have been reinforced by problematic language borrowed from other sectors (hospitality, medical). We will share survey results from a range of higher education institutions regarding their current attitudes and practices towards no-show appointments. We will present strategies we’ve used to encourage appointment attendance by fostering a sense of shared community of learners rather than using shame, financial penalty, or other punitive action to decrease no-shows. Finally, we’ll hear from students on their perceptions of taking up space in research appointments and analyze how research appointment practices can reward students who already have privilege. Participants will critically reflect on their own experiences and practices with research appointments through guided reflection and small group discussion in order to empower students.
    • Scaffolding Your Instruction with Epistemology

      Dean, Kirsten; University Libraries at Virginia Tech (The University of Arizona, 2020-09)
      Slides from pre-recorded video (https://youtu.be/W1_6lMTVZ7M) and live virtual discussion session (Sept. 16, 2020).
    • Support beyond the studio: Critical pedagogy in art librarianship

      Jennings, Michele; Hunt, Courtney; Ohio University; The Ohio State University (The University of Arizona, 2020-09)
      This session grew out of conversations between two art librarians working in close proximity at different institutions, centered around the idea that while the needs for art and design students require a different type of academic support than others (Hemmig, 2009), this approach to learning and information lends itself to critical pedagogy and takeaways for other disciplines. Dismantling the paradigm that positions librarians in the role of the sage, critical pedagogy establishes more of a horizontal line of support from the student to the librarian. Those students whose academic work is rooted in creative practice operate on a continuum that does not culminate in a single research paper or study. Instead, they may work on a piece in their first year and continue to iterate until their thesis show. Therefore, it is critical to consider how we teach and support students that we work with holistically. Art and design students especially “need to learn how to find their voices, which in turn becomes liberating, allowing them to fully engage in their own intellectual and educational process” (Reale, 2012, p. 85). This session explores strategies for supporting students working in creative disciplines for the entirety of their academic stay and beyond, and what takeaways there may be for librarians working in other areas. For example, Grimm and Meeks (2017) address critlib and social justice in visual literacy—how library practitioners may address inequity and racism in representation, teaching students to look (and make) critically. While visual literacy naturally lends itself to art and design library users, it is equally vital that students in other areas gain the skills necessary to grapple with and decode the visual media that surrounds them inside and outside of the classroom. Centering the idea of holistic student support, these two librarians began to think about what it means to apply critical pedagogy to art librarianship. Studio art and design pedagogy align with the tactics and motivations of critical librarianship and pedagogy; by attempting to recreate the studio environment through activities emphasizing collaboration and critique, this session will demonstrate how librarians can critically engage with students in the long term in any discipline.
    • Reimagining Peer Review

      Ford, Emily; Portland State University (The University of Arizona, 2020-09)
      As you may recall, the 2020 Critical Library and Pedagogy Symposium instituted an open peer review process—not masking submitters’ names and other identifying information—to review proposed sessions. This decision came after the committee noted a lack of diversity in accepted sessions using a closed review process. Using open peer review allowed the committee to balance accepted proposals and offer a diverse range of views and experiences among presenters. This hour-long facilitated discussion will examine bias and power structures inherent in peer review. It will be an interactive session that allows participants to critically examine their views and previous experiences with peer review, and begin to reimagine it. What can opening peer review do to create more equitable scholarly spaces? What problems does opening peer review improve, and what new challenges does it present? Note that this session will be interactive, and will use the Zoom breakout room feature as well as Google Docs for collaboration.
    • Test submission

      Chapman, Kimberly (The University of Arizona, 2020-03)
    • THE EFFECTS OF LOSSY FREQUENCY-DOMAIN EEG COMPRESSION ON CROSS-FREQUENCY COUPLING ANALYSIS

      Creusere, Charles D.; Phillips, Andrew J.; New Mexico State University, Klipsch School of Electrical and Computer Engineering (International Foundation for Telemetering, 2019-10)
      This paper analyzes lossy frequency-domain compression in the context of cross-frequency coupling (CFC) analysis of electroencephalograph (EEG) signals. The approach used here for CFC analysis involves a low-complexity signal analysis block followed by a constant false alarm rate (CFAR) detection algorithm. The lossy frequency-domain compression is achieved via the threshold coding method for frequency truncation using the discrete cosine transform (DCT). This method is found to increase CFC detection rates by as much as 30% to 50% depending on the amount of Gaussian noise in the signal and the selected probability of false alarm. Further analysis indicates that these significant improvements in CFC detection rates are due to adaptive frequency-domain noise reduction. These results bode well for lossy frequency-based EEG compression schemes which can greatly improve transmission speeds and decrease storage space requirements while simultaneously enhancing CFC analysis capabilities.
    • JOINT LTE UPLINK INTERFERENCE AND MULTIPATH SUPPRESSION FOR AERONAUTICAL TELEMETRY USING MMSE INTERFERENCE CANCELER

      Shoudha, Shamman Noor; Saquib, Mohammad; Univ Texas, Dept Electrical Engineering (International Foundation for Telemetering, 2019-10)
      This paper addresses the use of a minimum-mean-square-error (MMSE) interference canceler for mitigating the Long-Term Evolution (LTE) uplink interference and multipath in Aeronautical Telemetry system. SOQPSK-TG modulation scheme for the telemetry victim signal and 64-QAM for the LTE interference signal are considered. For a multipath channel derived from the channel sounding data, the interference canceler achieves the target bit error rate (BER) of 10-5 at Carrier-to-Interference (C/I) ratio - 12.7, - 40.7 and – 36 dB for data rates 1, 5 and 10 Mbits/s, respectively. To offer the same performance, an MMSE channel equalizer requires C/I ratio - 10.9, - 25.0 and - 5.0 dB.
    • REINFORCEMENT LEARNING FOR HYBRID BEAMFORMING IN MILLIMETER WAVE SYSTEMS

      Peken, Ture; Tandon, Ravi; Bose, Tamal; Univ Arizona, Dept Electrical and Computer Engineering (International Foundation for Telemetering, 2019-10)
      The use of millimeter waves (mmWave) for next-generation cellular systems is promising due to the large bandwidth available in this band. Beamforming will likely be divided into RF and baseband domains, which is called hybrid beamforming. Precoders can be designed by using a predefined codebook or by choosing beamforming vectors arbitrarily in hybrid beamforming. The computational complexity of finding optimal precoders grows exponentially with the number of RF chains. In this paper, we develop a Q-learning (a form of reinforcement learning) based algorithm to find the precoders jointly. We analyze the complexity of the algorithm as a function of the number of iterations used in the training phase. We compare the spectral efficiency achieved with unconstrained precoding, exhaustive search, and another state-of-art algorithm. Results show that our algorithm provides better spectral efficiency than the state-of-art algorithm and has performance close to that of exhaustive search.
    • JFLUTTER REAL TIME FLUTTER ANALYSIS IN FLIGHT TEST

      Rubio, Pedro; Coll, Francisca; AIRBUS DEFENCE & SPACE Flight Test (International Foundation for Telemetering, 2019-10)
      During the development of an aircraft it is mandatory to demonstrate that the aircraft is free from flutter within its operational flight envelope. This piece showcases JFlutter, a flutter analysis tool developed within Airbus Defence & Space Flight Test Analysis Tools. JFlutter allows the analysis of this phenomenon in real time monitoring and post flight mode. Using the FxS dataserver as data provider, a reliable data gathering mechanism has been used for this critical tool. As flutter means aero elastic instability, potentially dangerous, flight safety becomes a main requirement. For safety reasons and in order to reduce overall test program duration it is necessary to check predicted frequencies and damping in real time / monitoring.
    • HIGH-PERFORMANCE EXTENSIBLE SOQPSK (E-SOQPSK) MODULATION WAVEFORMS FOR AERONAUTICAL MOBILE TELEMETRY COMMUNICATIONS

      Lu, Cheng Y.; Argula, Rajeev; Sasvari, Gyorgy; Cook, Paul; Teletronics a Curtiss-Wright Company (International Foundation for Telemetering, 2019-10)
      To utilize the resilience to multipath and rapidly varying Doppler shifts offered by a multicarrier (MC) Orthogonal Frequency Division Multiplexed (OFDM) modulation waveform, and the high transmitter power efficiency offered by a single carrier (SC) Shaped Offset Quadrature Phase Shift Keying (SOQPSK) modulation waveform, we propose a novel Extensible Shaped Offset Quadrature Phase Shift Keying (E-SOQPSK) modulation waveform. E-SOQPSK is an OFDM structured single carrier modulation waveform, configurable to include OQPSK, SOQPSK, or mQAM. Preliminary laboratory results confirmed its low Peak-to-Average Power ratio (PAPR) and high spectrum efficiency. Preliminary simulations demonstrated multipath resilience of ESOQPSK waveform by utilizing OFDM structure based Frequency-Domain equalization at receiver.
    • APSK SYMBOL TIMING AND CARRIER PHASE SYNCHRONIZATION ON AN FPGA IN A C-BAND TELEMETRY RECEIVER

      Perrins, Erik; Baxter, Jason; Univ Kansas, Dept Electrical Engineering and Computer Science (International Foundation for Telemetering, 2019-10)
      This paper presents the implementation of a standard PLL-based timing and phase synchronization system on hardware usingan FPGA. The synchronization system is shown to successfully recover a 16-APSK signal despite off sets in phase and frequency between the transmitter and receiver local oscillators. Furthermore, it is shown that system performance, in terms of symbol times required to achieve lock, is comparable to double-precision floating point simulations despite using fixed point numbers with as few as 5 fractional bits for most computations.
    • DOPPLER POWER SPECTRA FROM VEHICLE-TO-EVERYTHING PROPAGATION EXPERIMENTS

      Rice, Michael; Harrison, Willie K.; Norman, Kalin; Jensen, Benjamin; Brigham Young University, Dept Electrical and Computer Engineering (International Foundation for Telemetering, 2019-10)
      This paper presents the results of vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) propagation experiments. The experimental results are summarized by Doppler power spectra. Our measurements indicate the need for a dynamic system that can handle the variable channels experienced in vehicle-to-everything communications.
    • SCALABLE TRANSMISSION AND DECODING OF SPACE PACKETS FOR REMOTE SATELLITE IMAGE BROWSING

      Oh, Han; Chang, Jae Young; Kim, Jin-Hyung; Choi, Hae-Jin; Satellite Operation and Application Center, Korean Aerospace Research Center; Future and Converging Technology Research Division, Korean Aerospace Research Center (International Foundation for Telemetering, 2019-10)
      The Consultative Committee for Space Data System (CCSDS) defines a standard for the data compression algorithm applied to the image data from payload instruments. In the CCSDS image data compression (CCSDS-IDC) standard, an image is encoded using a three-level two-dimensional DiscreteWavelet Transform (DWT) and the Bit-Plane Encoder (BPE). Compared to the JPEG2000 standard, the compression performance is reported to be similar at high bit rates with much lower complexity. However, its lack of highly scalable features supported by JPEG2000 hinders smooth browsing of the high-resolution satellite images. In this work, a method of quickly accessing a region of interest in a high-resolution satellite image is introduced. It utilizes parallel processing and the structure of the space packets which contain the strip-based codestream. This method is particularly effective for remote satellite image browsing and the study demonstrates its performance using KOMPSAT (Korea Multi-Purpose Satellite)-3A images.
    • ALTERNATE METHOD FOR DETERMINING A TSPI SOLUTION BASED ON TM SIGNAL STRENGTH

      Wolfson, Scott C.; U.S. Army Redstone Test Center (International Foundation for Telemetering, 2019-10)
      The continual advances in military system technologies compel the Test & Evaluation community to constantly mature and adapt test methodologies and instrumentation capabilities. The need for alternate approaches aimed at collecting in-flight missile Time Space Position Information (TSPI) that compliment on-system high dynamic GPS and radar is just one example that supports the development of new techniques and numerical methods. The primary objective of this technical paper is to provide conceptual details pertaining to a methodology that can determine a TSPI solution based on telemetry signal strength or data arrival time combined with the Newton-Raphson Jacobian method for solving a multivariate system of equations.
    • THREE-DIMENSIONAL MOTION ESTIMATION AND IMAGE FORMATION WITH ACTIVE ARRAYS

      Lee, Hua; Radzicki, Vincent R.; Univ California Santa Barbara, Dept Electrical and Computer Engineering (International Foundation for Telemetering, 2019-10)
      For target imaging and tracking systems, a key signal processing task is motion estimation. Specifically, the trajectory of a maneuvering target undergoing rigid body motion can be described through a series of translational and rotational transformations. Estimation of these motion parameters provides the tracking system enough information to calculate the targets trajectory over time. Determining the rotational motion to a high accuracy is also very important, as the imaging system can then form an image of the target over multiple aspect angles and thus increase the resolution performance. This paper focuses on algorithm development and performance limitations for motion estimation and image formation using active sensing arrays.