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Principal investigators and project teams funded by the National Science Foundation are familiar with the requirement to discuss the impact of their research. Whether the discussion appears in a new proposal, or as part of annual or final reporting, describing the impacts of a project is key to demonstrating the value of the work itself. PIs and project teams may not, however, consider the ways in which their reporting on impacts can help them disseminate their work to stakeholders and propagate their innovations to other researchers. Impact statements can also be useful to NSF program officers who are often inmore »
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We performed a comprehensive demographic study of the CO extent relative to dust of the disk population in the Lupus clouds in order to find indications of dust evolution and possible correlations with other disk properties. We increased the number of disks of the region with measured R CO and R dust from observations with the Atacama Large Millimeter/submillimeter Array to 42, based on the gas emission in the 12 CO J = 2−1 rotational transition and large dust grains emission at ~0.89 mm. The CO integrated emission map is modeled with an elliptical Gaussian or Nuker function, depending onmore »
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Abstract: Honors education values diversity, not simply to enrich our classrooms but for equity and social justice. At Columbus State University, students of color were underrepresented in honors education, and we sought to determine if institutional structures hindered them from being able to access educational programming that was commensurate with their ability. We used focus group interviews with students of color who were academically eligible to enroll in honors education yet never participated. We combined focus group interviews with an analysis of our recruiting practices. Using a theoretical framework based on intersectionality and possible selves theory, we found that ourmore »
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Context. Protoplanetary disks in dense, massive star-forming regions are strongly affected by their environment. How this environmental impact changes over time is an important constraint on disk evolution and external photoevaporation models. Aims. We characterize the dust emission from 179 disks in the core of the young (0.5 Myr) NGC 2024 cluster. By studying how the disk mass varies within the cluster, and comparing these disks to those in other regions, we aim to determine how external photoevaporation influences disk properties over time. Methods. Using the Atacama Large Millimeter/submillimeter Array, a 2.9′× 2.9′ mosaic centered on NGC 2024 FIR 3more »
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Consider the multigraph obtained by adding a double edge to $K_4-e$. Now, let $D$ be a directed graph obtained by orientating the edges of that multigraph. We establish necessary and sufficient conditions on $n$ for the existence of a $(K^{*}_{n},D)$-design for four such orientations.
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From a design-based research study with 31 families, we share the design conjectures that guided the first two iterations of research. The team developed a mobile augmented reality app focused on water-rock interactions to make earth sciences appealing to rural families. We iterated on one design element, the augmented reality visualizations, to understand how these AR elements influence families’ learning behavior in a children’s garden cave as well as their resulting geosciences knowledge. This analysis is an example of how design conjecture maps can be used to support research and development of mobile computer-supported collaborative learning opportunities for families inmore »
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While planets are commonly discovered around main-sequence stars, the processes leading to their formation are still far from being understood. Current planet population synthesis models, which aim to describe the planet formation process from the protoplanetary disk phase to the time exoplanets are observed, rely on prescriptions for the underlying properties of protoplanetary disks where planets form and evolve. The recent development in measuring disk masses and disk-star interaction properties, i.e., mass accretion rates, in large samples of young stellar objects demand a more careful comparison between the models and the data. We performed an initial critical assessment of themore »