# CV

Click here to download full CV (last updated: September 2022).

# Education

- Ph.D. in Applied Mathematics, University of California, Los Angeles, 2025 (expected)
- Area Exams (passed Spring 2021):
- Numerical Analysis
- Optimization/Numerical Linear Algebra

- M.A. in Mathematics, University of California, Los Angeles, 2022
- B.S. in Mathematics (Honors), Calvin University, 2020
- B.A. in Chemistry, Calvin University, 2020

# Research experience

- June 2021 - present: Graduate Student Researcher
- University of California, Los Angeles Department of Mathematics
- Supervisor: Prof. Deanna Needell
- Research interests:
- Numerical linear algebra
- Stochastic iterative methods
- Graph and manifold learning

- June 2019 - August 2019: NSF REU
- Cornell University Department of Mathematics
- Supervisor: Dr. Andy Borum
- Studied the equilibrium configurations of flexible helical springs using optimal control. Developed numerical methods to find unstable configurations and demonstrated the presence of saddle-node bifurcations in the equilibrium configurations of twisted springs.

- May 2018 - September 2020: Undergraduate Researcher
- Calvin University Department of Chemistry and Biochemistry
- Supervisor: Prof. Douglas A. Vander Griend
- Projects:
*Development of a parallelized, high-throughput website for equilibrium binding analysis:* Applied several classes of optimization algorithms to the simultaneous determination of reaction stoichiometry and binding constants of equilibrium systems of host-guest binding. Evaluated speed, convergence, and accuracy to devise a new hybrid algorithm. Currently implementing this new methodology in a supercomputer software package to facilitate fast, high-throughput analysis via a website interface.*Mathematical and computational analysis of 1:1 equilibrium binding:* Wrote Monte Carlo simulations to determine the robustness of global analysis for determination of binding constants of 1:1 host-guest equilibrium binding. Numerically demonstrated the benefits of using mathematically-derived optimal parameters for the titration experiment.

- May 2017 - August 2017: Undergraduate Researcher
- Calvin University Department of Mathematics and Statistics
- Supervisor: Prof. James Turner
- Worked towards a new proof of the 3-variable Moreno-Socias conjecture to prove the generalized conjecture. Used computer algebra systems to compute Grobner bases of generic ideals. Formulated a conjecture characterizing generic Grobner bases and proved the 2-variable case.

# Publications

Kazmierczak, N.P.; Chew, J.A.; Vander Griend, D.A. Bootstrap methods for quantifying the uncertainty of binding constants in the hard modeling of spectrophotometric titration data. Analytica Chimica Acta, 2022, 1227:339834.

Chew, J.A.; Hirn, M.; Krishnaswamy, S.; Needell, D.; Perlmutter, M.; Steach, H.R.; Viswanath, S.; Wu, H.-T. Geometric Scattering on Measure Spaces. Submitted for publication, 2022.

Chew, J.A.; Steach, H.R.; Viswanath, S.; Wu, H.-T.; Hirn, M.; Needell, D.; Krishnaswamy, S.; Perlmutter, M. The Manifold Scattering Transform for High-Dimensional Point Cloud Data. arXiv preprint, 2022.

Kazmierczak, N.P.; Chew, J.A.; Vander Griend, D.A. A reliable algorithm for calculating stoichiometry parameters in the hard modeling of spectrophotometric titration data. Journal of Chemometrics, 2022, 36:e3409.

Li, P.; Tseng, C.; Zheng, Y.; Chew, J.A.; Huang, L.; Jarman, B.; Needell, D. Guided Semi-Supervised Non-Negative Matrix Factorization. Algorithms 2022, 15:136

Kazmierczak, N.P.; Chew, J.A.; Michmerhuizen, A.R.; Kim, S.E.; Drees, Z.D.; Rylaarsdam, A.; Thong, T.; Van Laar, L.; Vander Griend, D.A. Sensitivity Limits for Determining 1:1 Binding Constants from Spectrophotometric Titrations via Global Analysis. Journal of Chemometrics, 2019, 33:e3119.

# Talks

September 29, 2022

Conference talk at SIAM MDS 2022, San Diego, CA

August 12, 2022

Workshop at UCLA Department of Mathematics, Los Angeles, CA

July 25, 2019

Talk at Cornell University Undergraduate Research Forum, Ithaca, NY

January 18, 2019

Poster at Joint Mathematics Meetings, Baltimore, MD

November 10, 2018

Poster at West Michigan Regional Undergraduate Science Conference, Grand Rapids, MI

November 04, 2017

Poster at West Michigan Regional Undergraduate Science Conference, Grand Rapids, MI

April 23, 2015

Talk at TEDx Valencia High School, Placentia, CA

# Awards

- Raymond Redheffer Prize (recognizes graduate student going above and beyond who taught freshman calculus course), 2022
- NSF Graduate Research Fellowship, 2020
- NCWIT Collegiate Award Finalist, 2019
- Goldwater Scholarship Honorable Mention, 2018
- Calvin Student Research Fellowship, 2016

# Mentoring

Click here for more information about each of these programs.

- UCLA CAM REU (2021, 2022)
- UCLA Women in Mathematics (2021-2022)
- UCLA Directed Reading Program (2021-2022)