Cordial Dislike: Reinventing the Celestial Ladies of \u3ci\u3ePearl\u3c/i\u3e and \u3ci\u3ePurgatorio\u3c/i\u3e in Tolkien\u27s Galadriel

Considers the Celestial Lady characters from Pearl and Purgatorio as influences on Tolkien’s Galadriel, in character, appearance, situation, and allegorical significance

Instructional Communication in Secondary Education

Though several early instructional communication studies (e.g., McCroskey & Richmond, 1983) focused on a wide range of participants across what Fredriech and Nussbaum (2005) call the “developmental continuum,”(p. 580) the vast majority of work has centered on the college classroom. Thus, little is known about how instruction occurs in primary and secondary education contexts. Therefore, instructional communication scholars should examine the instructional communication issues faced by primary and secondary school instructors. The purpose of the proposed study was to provide a research agenda for instructional communication scholars regarding communication in the secondary (K-12) educational context. This research was an exploratory study regarding teachers’ communicative strengths and weaknesses. The assessment was guided by the following research questions: As an instructor what do you feel like your communicative strengths are? As an instructor what do you feel like your communicative weaknesses are? The study was conducted through the use of open-ended surveys where secondary teachers were contacted via network sampling of the researchers. Every response was voluntary, and no risks were involved in this research.The data was analyzed through a constant comparative thematic analysis (Braun & Clarke, 2006) guided by grounded theory (Glaser & Strauss, 1967). This approach allowed meaning to emerge from participant responses, rather than subjecting them to pre-existing frameworks. Themes were identified through logical consistency (McCracken, 1988), repetition of phrases, recurrence of meaning, and forcefulness (Owen, 1984). At the 2019 conference, the results of this study were presented, as well as a research agenda to guide future work by instructional communication scholars interested in exploring the processes of teaching and learning at the secondary level

Single-Photon Counting Detector Scalability for High Photon Efficiency Optical Communications Links

For high photon-efficiency deep space or low power optical communications links, such as the Orion Artemis-2 Optical Communications System (O2O) project, the received optical signal is attenuated to the extent that single- photon detectors are required. For direct-detection receivers operating at 1.55 m wavelength, single-photon detectors including Geiger-mode InGaAs avalanche photon diodes (APDs), and in particular superconducting nanowire single-photon detectors (SNSPDs) offer the highest sensitivity and fastest detection speeds. However, these photon detectors exhibit a recovery time between registered input pulses, effectively reducing the detection efficiency over the recovery interval, resulting in missed photon detections, reduced count rate, and ultimately limiting the achievable data rate. A method to overcome this limitation is to divide the received optical signal into multiple detectors in parallel. Here we analyze this approach for a receiver designed to receive a high photon efficiency serially concatenated pulse position modulation (SCPPM) input waveform. From measured count rate and efficiency data using commercial SNSPDs, we apply a model from which we determine the effective detection efficiency, or blocking loss, for different input signal rates. We analyze the scalability of adding detectors in parallel for different modulation orders and background levels to achieve desired data rates. Finally we show tradeoffs between the number of detectors and the required received optical power, useful for real link design considerations

Nothing Left to Give: Responding to Secondhand Trauma in K-12 Educators

Sarah Downey ’24Major: Spanish/Secondary EducationFaculty Mentor: Dr. Comfort Ateh, Secondary Education In-service K-12 educators working in urban schools experience higher rates of secondhand trauma that result in teacher burnout and turnover. Existent literature is replete with the prevalence of Adverse Childhood Experiences and traumatic events in student populations, physiological and educational effects of trauma, and trauma-informed practices in schools. Nevertheless, teachers lack adequate training and resources to engage in trauma-informed teaching. It is critical for teacher preparation programs to engage teacher candidates in acquiring foundational knowledge and skills to be competent in trauma-informed teaching practices. In this poster presentation, I share the rationale for a trauma-informed teacher education program

Detector Channel Combining Results from a High Photon Efficiency Optical Communications Link Test Bed

The National Aeronautics and Space Administration (NASA) Glenn Research Center (GRC) is developing a low cost, scalable, photon-counting receiver prototype for space-to-ground optical communications links. The receiver is being tested in a test bed that emulates photon-starved space-to-ground optical communication links. The receiver uses an array of single-pixel fiber-coupled superconducting nanowire single-photon detectors. The receiver is designed to receive the high photon efficiency serially concatenated pulse position modulation (SCPPM) waveform specified in the Consultative Committee for Space Data Systems (CCSDS) Optical Communications Coding and Synchronization Blue Book Standard. The optical receiver consists of an array of single-pixel superconducting nanowire detectors, analog phase shifters for channel alignment, digitizers for each detector channel, and digital processing of the received signal. An overview of the test bed and arrayed receiver system is given. Simulation and system characterization results are presented. The data rate increase of using a four-channel arrayed detector system over using one single pixel nanowire detector is characterized. Results indicate that a single-pixel detector is capable of receiving data at a rate of 40 Mbps and a four-channel arrayed detector system is capable of receiving data at a rate of 130 Mbps

Losing Parasocial Friendships over Celebrity Politics: A Cognitive Discrepancies Approach

The present study examines 4 cognitive discrepancy management strategies that media users can use in response to a celebrity making a political statement that runs contrary to their beliefs. The experiment (N = 382) replicates the results using 3 celebrities and 2 attitude object contexts. Exposure to a celebrity making political statements that the media user disagrees with resulted in weaker parasocial relationships with the celebrity and attribution of lesser importance to that issue. Viewers who particularly liked the celebrity prior to the study were more likely to decouple the actor from their line of work to continue enjoying the actor’s media content despite their political disagreement. These findings illuminate the potential consequences of celebrity politics for both the media figures’ stardom and the citizens’ political participation. (PsycInfo Database Record (c) 2022 APA, all rights reserved) Impact Statement Entertainment celebrities often voice their stance on various social issues. The study examines the consequences of this practice, showing that although entertainers can leverage their celebrity status to attenuate public opinion, it might come at the cost of their popularity. These findings can inform efforts to maximize the impact of political advocacy, enhance celebrity management practices, and promote political participation

Sigmoid perforation caused by an ingested chicken bone presenting as right iliac fossa pain mimicking appendicitis: a case report

<p>Abstract</p> <p>Introduction</p> <p>Gastrointestinal perforation due to a foreign body is not unknown. The foreign body often mimics another cause of acute abdomen and requires emergency surgical intervention. The majority of patients do not recall ingesting the foreign body. Perforations have been reported to occur in a pathologically abnormal colon.</p> <p>Case presentation</p> <p>We report an interesting case of a 47-year-old Caucasian man who had a perforation of the sigmoid colon caused by an ingested chicken bone mimicking acute appendicitis. Our patient presented with right iliac fossa pain and local tenderness. When a laparotomy was performed, a chicken bone was found protruding through the sigmoid colon, which was found to lie in the right iliac fossa, thus mimicking acute appendicitis. Our case is different from previously reported cases in that perforation occurred in a non-pathological colon.</p> <p>Conclusion</p> <p>Our case emphasises the fact that the operating surgeon has to be aware of various differential diagnostic possibilities which mimic acute appendicitis. This has implications on the training of junior surgeons who are often involved in performing these procedures, and may do so out of hours. Care needs to be taken while obtaining consent for the necessary operation.</p

Real Time Optical Receiver Project

The goals for the Real Time Optical Receiver project are to Infuse Consultative Committee for Space Data Systems High Photon Efficiency standard into missions, such as Artemis and to provide a real time ground receiver solution (fiber device, detector, real time FPGA-based receiver) that is: (1) Scalable: data rate, atmosphere conditions, telescope aperture, etc., and (2) Uses COTS components when available and work with companies to move custom parts to COTS

Silyl trifluoromethanesulfonate-activated para-methoxybenzyl methyl ether as an alkylating agent for thiols and aryl ketones

para-Methoxybenzyl methyl ether acts as an alkylating agent for thiols in the presence of trimethylsilyl trifluoromethanesulfonate and trialkylamine base in good yields (58-96%). Aryl ketones are alkylated under similar conditions, probably through an enol silane intermediate, also in high yields (67-95%). The active alkylating species is likely a p-methoxybenzyl cation

Defund the Police: Moving Towards an Anti-Carceral Social Work

This paper addresses social work’s place in the movement to “defund the police.” We argue that social work’s collaboration with police and use of policing constitutes carceral social work. In defining carceral social work, we specify the ways in which coercive and punitive practices are used to manage Black, Indigenous, other people of color and poor communities across four social work arenas – gender-based violence, child welfare, schools, and health and mental health. To inform anti-carceral social work, we provide examples of interventions in these arenas that dismantle police collaborations and point to life-affirming, community-centered, and mutual aid alternatives