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Title: Toward Memory-Assisted Hong-Ou-Mandel Interference Between Two Independent Cavity-Enhanced Photon Pair Sources
We report our progress toward demonstrating memory-assisted Hong-Ou-Mandel interference between independent cavity-enhanced entangled photon pair sources at room temperature as a stepping stone toward a type II quantum repeater. more »« less
Romero_Castro, Offir N; Van_Zoest, Laura R
(, North American Chapter of the International Group for the Psychology of Mathematics Education)
Lambert, T; Moss, D
(Ed.)
Negative perceptions held by teachers toward students with disabilities create environments that make students feel uncomfortable and often incapable of participating actively in classrooms. Much of the research about these perceptions is focused on teachers of students with learning disabilities, which leaves out teachers’ perceptions toward students with other disabilities. We are developing a responsive online survey to access what mathematics teachers identify as disabilities and their behavior toward students with disabilities in their classroom. In this paper, we describe the process we have developed for constructing this survey. We also share our conceptualization of the relationship between teachers’ perceptions and equity affirmations toward disability, and the results of applying that conceptualization to our research context.
Tai, Robert H.; Ryoo, Ji Hoon; Skeeles-Worley, Angela; Dabney, Katherine P.; Almarode, John T.; Maltese, Adam V.
(, International Journal of STEM Education)
Abstract Background Capturing measures of students’ attitudes toward science has long been a focus within the field of science education. The resulting interest has led to the development of many instruments over the years. There is considerable disagreement about how attitudes should be measured, and especially whether students’ attitudes toward science can or should be measured unidimensionally, or whether separate attitude dimensions or subscales should be considered. When it is agreed upon that the attitudes toward science construct should be measured along separate subscales, there is no consensus about which subscales should be used. Methods A streamlined version of the modified Attitudes Towards Science Inventory (mATSI), a widely used science measurement instrument, was validated for a more diverse sample as compared to the original study (Weinburgh and Steele in Journal of Women and Minorities in Science and Engineering 6:87–94, 2000). The analytical approach used factor analyses and longitudinal measurement invariance. The study used a sample of 2016 self-reported responses from 6 and 7th grade students. The factor analysis elucidated the factor structure of students’ attitudes toward science, and some modifications were made in accordance with the results. Measurement invariance analysis was used to confirm the stability of the measure. Results Our results support that the subscales, anxiety toward science and value and enjoyment of science , are two factors and stable over time. Conclusions Our results suggest that our proposed modified factor structure for students’ attitudes toward science is reliable, valid, and appropriate for use in longitudinal studies. This study and its resulting streamlined mATSI survey could be of value to those interested in studying student engagement and measuring middle-school students' attitudes toward science.
Song, Ruihao; Cho, Seokjoo; Khan, Shadman; Park, Inkyu; Gao, Wei
(, Advanced Materials)
Abstract Recent advancements in wearable photonic sensors have marked a transformative era in healthcare, enabling non‐invasive, real‐time, portable, and personalized medical monitoring. These sensors leverage the unique properties of light toward high‐performance sensing in form factors optimized for real‐world use. Their ability to offer solutions to a broad spectrum of medical challenges – from routine health monitoring to managing chronic conditions, inspires a rapidly growing translational market. This review explores the design and development of wearable photonic sensors toward various healthcare applications. The photonic sensing strategies that power these technologies are first presented, alongside a discussion of the factors that define optimal use‐cases for each approach. The means by which these mechanisms are integrated into wearable formats are then discussed, with considerations toward material selection for comfort and functionality, component fabrication, and power management. Recent developments in the space are detailed, accounting for both physical and chemical stimuli detection through various non‐invasive biofluids. Finally, a comprehensive situational overview identifies critical challenges toward translation, alongside promising solutions. Associated future outlooks detail emerging trends and mechanisms that stand to enable the integration of these technologies into mainstream healthcare practice, toward advancing personalized medicine and improving patient outcomes.
Barnes, Jesse L; Koebele, Elizabeth A; Deslatte, Aaron
(, Public Administration)
ABSTRACT Amidst 21st‐century climate‐related threats, municipal elected officials (EOs) may outsource public services to third parties to avoid the political costs of adopting “unpopular” sustainability policies—a strategy known as political decoupling. However, decoupling raises accountability concerns and may not improve sustainability, leading some municipalities to “recouple” services. To help understand the political impacts of these decisions, we assess how public scrutiny toward EOs in US municipalities changes after varying degrees of coupling in the water provision sector (i.e., how much service delivery shifts away from or toward municipal oversight). Analysis of local media coverage shows public attention toward EOs decreases after higher degrees of decoupling and recoupling, public opinion becomes polarized toward EOs after decouplings, and the public links sustainability‐related issues to EOs after high degrees of decoupling. The results highlight how reforming public services relates to political accountability‐related factors and raise critical questions about the political decoupling strategy.
Kolesniková, L.; Belloche, A.; Koucký, J.; Alonso, E. R.; Garrod, R. T.; Luková, K.; Menten, K. M.; Müller, H. S.; Kania, P.; Urban, Š.
(, Astronomy & Astrophysics)
Context. Numerous complex organic molecules have been detected in the universe and among them are amides, which are considered as prime models for species containing a peptide linkage. In its backbone, acrylamide (CH 2 CHC(O)NH 2 ) bears not only the peptide bond, but also the vinyl functional group that is a common structural feature in many interstellar compounds. This makes acrylamide an interesting candidate for searches in the interstellar medium. In addition, a tentative detection of the related molecule propionamide (C 2 H 5 C(O)NH 2 ) has been recently claimed toward Sgr B2(N). Aims. The aim of this work is to extend the knowledge of the laboratory rotational spectrum of acrylamide to higher frequencies, which would make it possible to conduct a rigorous search for interstellar signatures of this amide using millimeter wave astronomy. Methods. We measured and analyzed the rotational spectrum of acrylamide between 75 and 480 GHz. We searched for emission of acrylamide in the imaging spectral line survey ReMoCA performed with the Atacama Large Millimeter/submillimeter Array toward Sgr B2(N). We also searched for propionamide in the same source. The astronomical spectra were analyzed under the assumption of local thermodynamic equilibrium. Results. We report accurate laboratory measurements and analyses of thousands of rotational transitions in the ground state and two excited vibrational states of the most stable syn form of acrylamide. In addition, we report an extensive set of rotational transitions for the less stable skew conformer. Tunneling through a low energy barrier between two symmetrically equivalent configurations has been revealed for this higher-energy species. Neither acrylamide nor propionamide were detected toward the two main hot molecular cores of Sgr B2(N). We did not detect propionamide either toward a position located to the east of the main hot core, thereby undermining the recent claim of its interstellar detection toward this position. We find that acrylamide and propionamide are at least 26 and 14 times less abundant, respectively, than acetamide toward the main hot core Sgr B2(N1S), and at least 6 and 3 times less abundant, respectively, than acetamide toward the secondary hot core Sgr B2(N2). Conclusions. A comparison with results of astrochemical kinetics model for related species suggests that acrylamide may be a few hundred times less abundant than acetamide, corresponding to a value that is at least an order of magnitude lower than the observational upper limits. Propionamide may be as little as only a factor of two less abundant than the upper limit derived toward Sgr B2(N1S). Lastly, the spectroscopic data presented in this work will aid future searches of acrylamide in space.
@article{osti_10625124,
place = {Country unknown/Code not available},
title = {Toward Memory-Assisted Hong-Ou-Mandel Interference Between Two Independent Cavity-Enhanced Photon Pair Sources},
url = {https://par.nsf.gov/biblio/10625124},
abstractNote = {We report our progress toward demonstrating memory-assisted Hong-Ou-Mandel interference between independent cavity-enhanced entangled photon pair sources at room temperature as a stepping stone toward a type II quantum repeater.},
journal = {},
publisher = {Optica Publishing Group},
author = {Buonocore, Edoardo and Gera, Sonali and Figueroa, Eden},
}
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