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Free, publicly-accessible full text available December 1, 2026
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Free, publicly-accessible full text available October 1, 2026
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Eddy, Pamela (Ed.)Faculty development (FD) plays a pivotal role in supporting instructors’ classroom practice and can be instrumental in driving transformational change across an institution. The present case‐study describes how FD supports the transformation of a mathematics department to promote inclusive active learning (IAL) classrooms at a community college, which has been designated as a Hispanic Serving Institution (HSI). Using a tiered cohort mentoring model, instructors worked together to learn the theory and techniques of IAL, redesigning their classrooms to be a space that creates the right conditions for all learners. Instructors were trained on analyzing disaggregated student outcome data and encouraged to explore student performance within their own courses. The FD team supported the design of a structured mentor training program for faculty, a curriculum designed to promote cohort learning, and supplementary instruction in effective mentoring practices and IAL, to equip mentors to guide their mentees. Qualitative data indicated both mentors and mentees felt strongly supported and empowered to make dynamic classroom changes that support learning for all students. Instructors reported being more open to trying new techniques in the classroom following the professional development experience.more » « lessFree, publicly-accessible full text available September 16, 2026
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Free, publicly-accessible full text available August 27, 2026
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Free, publicly-accessible full text available December 1, 2026
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Free, publicly-accessible full text available December 31, 2026
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Chang, Fu-Kuo; Guemes, Alfredo (Ed.)This paper addresses the problem of monitoring structures with potential emergent damage through adaptive sensing provided by teams of mobile robots. Advantages of mobile robot teams for structural health monitoring include: 1. Multiple views of a given structure, 2. Adaptive movements that focus attention in response to observed conditions,3. Heterogeneous sensing and movement, and 4. Federated health monitoring and prognosis assessment through networked sharing and processing of information. Towards this end three cases of the use of mobile robot teams will be presented: 1. Heterogeneous robot teams for home and small building maintenance – Identifying, diagnosing and mitigating damage to homes and small buildings is a vexing set of problems for the owners. As an aid small controlled bristlebots and quadruped robot dogs (QRDs) carry sensors throughout a small building, assess conditions, provide prognoses and networked links to repair options; 2. Culverts are primary components of stormwater and flood prevention infrastructure. Inspecting small culverts is difficult for humans and large culverts are accessible but dangerous due to issues of confined spaces. Low-cost mobile robots have emerged as a competitive inspection option for accessible culverts with straight or short runs that permit wireless telemetry. Longer culverts and those with bends, branches and drop inlets pose challenges to the telemetry. Teams of robots extend the range of inspection through multi-hop video and control telemetry; 3. Ground penetrating radar (GPR) is a method of sensing subsurface infrastructure conditions with high-frequency electromagnetic waves. Conventional GPRs operate in a suboptimal monostatic or bistatic mode, are tedious to operate and have limitations in sensing congested utility subsurface conditions. Coordinated multistatic ground penetrating radar operated with mobile robot teams alleviates some of these concerns and provide better subsurface assessments with automated methods that focus attention on subsurface features of interest. Results from laboratory and field tests of these robot teams, as well as organizing principles of control and automated information processing are presented.more » « lessFree, publicly-accessible full text available September 9, 2026
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Stress fields imparted with an ultrafast laser can correct low spatial frequency surface figure error of mirrors through ultrafast laser stress figuring (ULSF): the formation of nanograting structures within the bulk substrate generates localized stress, creating bending moments that equilibrize via wafer deformation. For ULSF to be used as an optical figuring process, the ultrafast laser generated stress must be effectively permanent or risk unwanted figure drift. Two isochronal annealing experiments were performed to measure ultrafast laser-generated stress stability in fused silica and Corning ultra-low expansion (ULE) wafers. The first experiment tracked changes to induced astigmatism up to 1000 °C on 25.4 mm-diameter wafers. Only small changes were measured after each thermal cycle up to 500 °C for both materials, but significant changes were observed at higher temperatures. The second experiment tracked stress changes in fused silica and ULE up to 500 °C but with 4 to 16× higher signal-to-noise ratio. Change in trefoil on 100 mm-diameter wafers was measured, and the induced stress in fused silica and ULE was found to be stable after thermal cycling up to 300 °C and 200 °C, respectively, with larger changes at higher temperatures.more » « lessFree, publicly-accessible full text available August 1, 2026
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Free, publicly-accessible full text available September 1, 2026
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