Saturday – Apr 18
Location: Outside Basil 135
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- Time:
- 3:05 pm – 3:35 pm
- Title:
- Nanotube Elements for Extending P-Surface Schwarzites
- Speaker:
- Charlie Illingworth (St. John Fisher University)
Abstract
The search for new carbon allotropes continues to inspire advances in materials chemistry, with particular interest in sp2-carbon structures. Among these, negatively curved hypothetical Schwarzites represent an exciting opportunity to prepare materials with controlled electronic, mechanical, and adsorption properties. A bottom-up synthetic approach has been suggested to connect heptagon trimmers via covalent linkages for a precise control over the geometry and topology of the resulting network essential for realizing their potential in catalysis, energy storage, and molecular separation. In this theoretical study, we explored the idea of adding one-dimensional synthetic nanotubes of a uniform size as connectors between openings of P-surface Schwarzite chambers using the Materials Studio software. By varying the nanotube length, we were able to significantly broaden the achievable range of porosity and material density. The design was focused on specific tiling by heptagons for previously reported Schwarzites. The small and large chambers for each P-surface example dictated different types of nanotubes, zigzag and armchair, depending on the recently introduced topological characteristic – the neck configuration. We introduce a systematic nomenclature for nanotube–Schwarzite hybrid materials that defines the nanotube lengths along each of the three Cartesian axes and specifies both the Schwarzite topology and the chamber size (small or large) to which the nanotubes are attached.
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- Time:
- 3:05 pm – 3:35 pm
- Title:
- Pattern Avoidance in Lattice and Yamanouchi Words
- Speaker:
- Alanna Pellicane (SUNY Brockport)
Abstract
This research focuses on pattern avoidance in binary lattice and Yamanouchi words. We determine the number of such words of size $n$ that avoid one pattern in several specific cases. We characterize the structure of these words of some of these pattern avoiding-words.
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- Time:
- 3:05 pm – 3:35 pm
- Title:
- Testing the Predictability of Daily Changes in the French 2-Year Government Bond Yield
- Speakers:
- Qudus Bawaallah (SUNY Brockport), Prashant Chhantyal, Mohamed Musa
Abstract
This study examines whether daily changes in the French 2-year government bond yield (FR2Y) are predictable using euro-area macroeconomic and monetary policy variables. Motivated by classical term-structure models, we construct a linear forecasting model incorporating lagged French yield changes, the French–U.S. and French–German yield spreads, and the ECB Deposit Facility Rate. Using 1,731 strictly out-of-sample forecasts, the model achieves 50.9% directional accuracy and a proxy Sharpe ratio of +0.667, outperforming a zero-change benchmark on RMSE. However, the OOS correlation of 0.084 is statistically significant yet economically modest, and the Diebold-Mariano test fails to reject equal predictive accuracy against a coin flip. Regime-sensitivity analysis reveals that the model performs best during ECB tightening cycles (2022–2023), while fat tails and high kurtosis limit strategy performance. Coefficient stability holds across walk-forward refits, though directional gains are overwhelmed by larger daily shocks. These findings suggest that short-horizon yield prediction contains a weak but detectable signal, one that we argue is regime-dependent and insufficient to generate robust out-of-sample forecasting advantage without further extension.