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Articles 1 - 17 of 17
Full-Text Articles in Physical Sciences and Mathematics
Geometry Aided Sonification, Michael Tecce
Geometry Aided Sonification, Michael Tecce
Computer Science Summer Fellows
Sonification is the process of deriving an audio representation of a time series which conveys important information about that time series. Otology and vision science have established that humans process audio information more quickly than visual information, and sonification can convey data to the visually impaired. In our work, we implement pipelines using Python/Numpy, and we handle both ordinary 1D time series and multivariate time series. For 1D time series, we find that using data to modulate the pitch or timing of preselected sounds (such as sine waves) simply and effectively captures repeating patterns and anomalies/outliers within the data. To …
Many Body Localization With Rydberg Atoms, Alicia Handian
Many Body Localization With Rydberg Atoms, Alicia Handian
Physics and Astronomy Summer Fellows
Systems are known to thermalize, or reach equilibrium, with the passing of time. However, when this does not occur, the quantum states of the system may be localized. Localized states carry information of the system’s initial state that is typically lost during the process of thermalization. We aim to study thermalization and localization in systems of rubidium Rydberg atoms, and to further understand these phenomena via simulation while we are developing a more refined experiment.
Geometry Aided Sonification, Michael Tecce
Geometry Aided Sonification, Michael Tecce
Mathematics and Computer Science Presentations
Sonification is the process of deriving an audio representation of a time series which conveys important information about that time series. Otology and vision science have established that humans process audio information more quickly than visual information, and sonification can convey data to the visually impaired. In our work, we implement pipelines using Python/Numpy, and we handle both ordinary 1D time series and multivariate time series. For 1D time series, we find that using data to modulate the pitch or timing of preselected sounds (such as sine waves) simply and effectively captures repeating patterns and anomalies/outliers within the data. To …
Single-Neutron Transfer To 50ti, Jessica Nebel-Crosson
Single-Neutron Transfer To 50ti, Jessica Nebel-Crosson
Physics and Astronomy Summer Fellows
This is a continuation of the data analysis of a neutron-transfer reaction with 50Ti, in which the data was collected in 2019 and this analysis focuses on automating the calibration and peak fits for the generated spectra. Future work will continue with producing angular distributions for the rest of the excitation states and further analyzation in order to draw conclusions about single-neutron state structures.
Hoop Dreams: An Empirical Analysis Of The Gender Wage Gap In Professional Basketball, Hailey Dicicco
Hoop Dreams: An Empirical Analysis Of The Gender Wage Gap In Professional Basketball, Hailey Dicicco
Business and Economics Presentations
The gender wage gap is a very prominent point of discussion in the professional world, but in the sports world, it has taken the spotlight in recent years. One sport that has seen discussion and debate over salary differences is the National Basketball Association and Women’s National Basketball Association. In 2018, the average salary in the NBA was 6.4 million dollars, while the average salary in the WNBA was 71,635 dollars. A reason why these salaries are so differently is due to the amount of revenue that each league brings in. The NBA brings in roughly 7.4 billion dollars a …
Cross-Cultural Comparisons: The Art Of Computing The Greatest Common Divisor, Mary K. Flagg
Cross-Cultural Comparisons: The Art Of Computing The Greatest Common Divisor, Mary K. Flagg
Number Theory
No abstract provided.
Playfair's Introduction Of Time Series To Represent Data, Diana White, Joshua Eastes, Negar Janani, River Bond
Playfair's Introduction Of Time Series To Represent Data, Diana White, Joshua Eastes, Negar Janani, River Bond
Statistics and Probability
No abstract provided.
Playfair's Novel Visual Displays Of Data, Diana White, River Bond, Joshua Eastes, Negar Janani
Playfair's Novel Visual Displays Of Data, Diana White, River Bond, Joshua Eastes, Negar Janani
Statistics and Probability
No abstract provided.
Processing And Characterization Of Spin-Coated As2s3 Films For Direct Laser Writing, Mia Truman
Processing And Characterization Of Spin-Coated As2s3 Films For Direct Laser Writing, Mia Truman
Physics and Astronomy Presentations
Diffraction gratings, waveguides, and resonators are components of photonic devices that can be fabricated using chalcogenide glasses. These chalcogenide components can be made through a process of direct laser writing and etching to reveal targeted structures on the surface of the films. Thermal deposition in combination with targeted laser irradiation has been used on As2S3 films with excellent results, but spin-coating as a method of deposition has been less explored. Spin-Coating is a relatively inexpensive procedure where a bulk glass is dissolved into a solution using amines and “spun” onto a substrate. This is a low-cost alternative …
Fighting Waste And Feeding People: Exploring The Context Of Campus Food Waste And Student Recovery Efforts, Sarah Becker, Max Stout, Maddie Kuklentz, Savona Cerra
Fighting Waste And Feeding People: Exploring The Context Of Campus Food Waste And Student Recovery Efforts, Sarah Becker, Max Stout, Maddie Kuklentz, Savona Cerra
Environment and Sustainability Presentations
Wismer on Wheels is dedicated to our mission of not only reducing food waste on campus, but also reducing food insecurity in our wider community. The work of our team of over 35 student volunteers reflects that dedication. This past year we became the official Food Recovery Network chapter for Ursinus, broadened outreach efforts on- and off-campus, and boosted food waste education, all while recovering unprecedented quantities of food. In this presentation, we celebrate the accomplishments of our dedicated volunteers while exploring deeper questions about food waste on the Ursinus campus. Why are we seeing such massive food recovery numbers …
Investigations Into Bolzano's Bounded Set Theorem, Dave Ruch
Investigations Into Bolzano's Bounded Set Theorem, Dave Ruch
Analysis
No abstract provided.
Investigations Into D'Alembert's Definition Of Limit (Real Analysis Version), Dave Ruch
Investigations Into D'Alembert's Definition Of Limit (Real Analysis Version), Dave Ruch
Analysis
No abstract provided.
Time Dependence Of Few-Body Forster Interactions Among Ultracold Rydberg Atoms, Zhimin Cheryl Liu, Nina P. Inman, Thomas J. Carroll, Michael W. Noel
Time Dependence Of Few-Body Forster Interactions Among Ultracold Rydberg Atoms, Zhimin Cheryl Liu, Nina P. Inman, Thomas J. Carroll, Michael W. Noel
Physics and Astronomy Faculty Publications
Rubidium Rydberg atoms in either |mj| sublevel of the 36p3/2 state can exchange energy via Stark-tuned Förster resonances, including two-, three-, and four-body dipole-dipole interactions. Three-body interactions of this type were first reported and categorized by Faoro et al. [Nat. Commun. 6, 8173 (2015)] and their Borromean nature was confirmed by Tretyakov et al. [Phys. Rev. Lett. 119, 173402 (2017)]. We report the time dependence of the N-body Förster resonance N×36p3/2,|mj|=1/2→36s1/2+37s1/2+(N−2)×36p3/2,|mj|=3/2, for N=2, 3, …
Perturbed Field Ionization For Improved State Selectivity, Vincent C. Gregoric, Jason Bennett, Bianca R. Gualtieri, Hannah P. Hastings, Ankitha Kannad, Zhimin Cheryl Liu, Maia R. Rabinowitz, Zoe A. Rowley, Maio Wang, Lauren Yoast, Thomas J. Carroll, Michael W. Noel
Perturbed Field Ionization For Improved State Selectivity, Vincent C. Gregoric, Jason Bennett, Bianca R. Gualtieri, Hannah P. Hastings, Ankitha Kannad, Zhimin Cheryl Liu, Maia R. Rabinowitz, Zoe A. Rowley, Maio Wang, Lauren Yoast, Thomas J. Carroll, Michael W. Noel
Physics and Astronomy Faculty Publications
Selective field ionization (SFI) is used to determine the state or distribution of states to which a Rydberg atom is excited. By evolving a small perturbation to the ramped electric field using a genetic algorithm, the shape of the time-resolved ionization signal can be controlled. This allows for the separation of signals from pairs of states that would be indistinguishable with unperturbed SFI. Measurements and calculations are presented that demonstrate this technique and shed light on how the perturbation directs the pathway of the electron to ionization. Pseudocode for the genetic algorithm is provided. Using the improved resolution afforded by …
The Mobius Function And Mobius Inversion, Carl Lienert
The Mobius Function And Mobius Inversion, Carl Lienert
Number Theory
No abstract provided.
Playfair's Introduction Of Bar And Pie Charts To Represent Data, Diana White, River Bond, Joshua Eastes, Negar Janani
Playfair's Introduction Of Bar And Pie Charts To Represent Data, Diana White, River Bond, Joshua Eastes, Negar Janani
Statistics and Probability
No abstract provided.
Representing And Interpreting Data From Playfair, Diana White, River Bond, Joshua Eastes, Negar Janani
Representing And Interpreting Data From Playfair, Diana White, River Bond, Joshua Eastes, Negar Janani
Statistics and Probability
No abstract provided.