Building Belonging Into the System

This design case documents how a K-12 district took steps to systemically support virtual student wellness and belonging. Plans for course design to support social-emotional-academic learning (SEAL) competencies, increase perception of belonging, and create safe, predictable learning environments characteristic of a trauma-informed approach to teaching and learning are shared. The assumption virtual learners are not looking to experience belonging and cannot be successful unless they already have strong SEAL skills is challenged. Rather, the positioning of SEAL competencies as learning objectives rather than necessary prerequisites to access online learning proved to contribute to more equitable learning opportunities

Orientation Online: The Surprising Benefits of Virtual New Faculty Orientation

This design case documents the reimagination of new faculty orientation for a mid-sized public university due to the COVID-19 global pandemic. This fully virtual iteration was facilitated during the summer of 2020 and is compared both to previous in-person iterations of new faculty orientation as well as a blended modality version of the orientation program offered in 2021. The redesign is explained using language from Puntedura’s (2006) Substitution- Augmentation- Modification- Redefinition (SAMR) model of technology application in distributed learning. Such terminology provided a helpful common vocabulary for a design team pressured to determine which elements of orientation needed to be fully reimagined for successful virtual implementation and where simple substitution would suffice. A description of synchronous elements from the fully virtual orientation as well as artifacts from the asynchronous portions is included. A lack of formal evaluation for the reimagined new faculty orientation space is shared as an element of design failure. The informal evaluation uncovered attendee appreciation of both flexibility and recursiveness, feedback our design team used to combat criticism of a lack of attention during virtual events. The paper concludes with a reflection on the need for transparent communication between event attendees, event designers, and other key invested partners (such as university administration) if the benefits of virtual orientation programming are to be adopted for our institution beyond emergency modalities

Autonomous ROV inspections of aquaculture net pens using DVL

This article presents a method for guiding a remotely operated vehicle (ROV) to autonomously traverse an aquaculture net pen. The method is based on measurements from a Doppler velocity log (DVL) and uses the measured length of the DVL beam vectors to approximate the geometry of a local region of the net pen in front of the ROV. The ROV position and orientation relative to this net pen approximation are used as inputs to a nonlinear guidance law. The guidance law is based upon the line-of-sight (LOS) guidance law. By utilizing that an ROV is fully actuated in the horizontal plane, the crosstrack error is minimized independently of the ROV heading. A Lyapunov analysis of the closed-loop system with this guidance law shows that the ROV is able to follow a continuous path in the presence of a constant irrotational ocean current. Finally, results from simulations and experiments demonstrating the performance of the net pen approximation and control system are presented.acceptedVersio

Past Precedent Reconciling Established Multimedia Principles in 3D Virtual Learning Environments

This design case documents the inception, development, and installation of a virtual exhibit on ethical use of learning analytics (LA) for the Museum of Instructional Design (MID), hosted in Mozilla Hubs. Tension emerged as the design team attempted to negotiate established principles of multimedia design theory (see Mayer, 2014; Mayer & Fiorella, 2021; Richardson, 2014) within an emerging learning environment. A rapid prototyping model, combined with elements of critical museology and dialectics, allowed for ongoing formative evaluation of design fidelity. Exhibit artifacts consisted of scenarios illustrating the ethical ambiguities of LA; a data justice timeline pairing recent peer-reviewed articles on LA with significant contemporaneous milestones in data privacy; audio zones highlighting the dialectical dialogue between those who support LA use and those who advise caution; and a response wall for museum visitors to extend the discussion. Beyond application of multimedia design principles to artifacts, 3D spaces also demand consideration of space and movement flow. Lacking precedent, this exhibit design was guided by the Smithsonian’s (2018) recommendations for in-person exhibits. It is the intention of the design team that this design case highlights the need for a reconsideration of established multimedia theory when designing for emerging learning environments

IACHEC CROSS-CALIBRATION OF CHANDRA, NuSTAR, SWIFT, SUZAKU, XMM-NEWTON WITH 3C 273 ANDPKS 2155-304

On behalf of the International Astronomical Consortium for High Energy Calibration, we present results from the cross-calibration campaigns in 2012 on 3C 273 and in 2013 on PKS 2155-304 between the then active X-ray observatories Chandra, NuSTAR, Suzaku, Swift, and XMM-Newton. We compare measured fluxes between instrument pairs in two energy bands, 1–5 keV and 3–7 keV, and calculate an average cross-normalization constant for each energy range. We review known cross-calibration features and provide a series of tables and figures to be used for evaluating cross-normalization constants obtained from other observations with the above mentioned observatories.United States. National Aeronautics and Space Administration (Smithsonian Astrophysical Observatory. Contract SV3-73016)United States. National Aeronautics and Space Administration. (Grant NNX09AE58G

α-Herpesvirus glycoprotein D interaction with sensory neurons triggers formation of varicosities that serve as virus exit sites

α-Herpesviruses constitute closely related neurotropic viruses, including herpes simplex virus in man and pseudorabies virus (PRV) in pigs. Peripheral sensory neurons, such as trigeminal ganglion (TG) neurons, are predominant target cells for virus spread and lifelong latent infections. We report that in vitro infection of swine TG neurons with the homologous swine α-herpesvirus PRV results in the appearance of numerous synaptophysin-positive synaptic boutons (varicosities) along the axons. Nonneuronal cells that were juxtaposed to these varicosities became preferentially infected with PRV, suggesting that varicosities serve as axonal exit sites for the virus. Viral envelope glycoprotein D (gD) was found to be necessary and sufficient for the induction of varicosities. Inhibition of Cdc42 Rho GTPase and p38 mitogen-activated protein kinase signaling pathways strongly suppressed gD-induced varicosity formation. These data represent a novel aspect of the cell biology of α-herpesvirus infections of sensory neurons, demonstrating that virus attachment/entry is associated with signaling events and neuronal changes that may prepare efficient egress of progeny virus