Research works

Direct probabilistic IMPT treatment planning with setup and range errors for neuro-oncological patients

Abstract Objective . To show computational feasibility of a previously proposed probabilistic planning approach on a neuro-oncological patient group, we compared probabilistic plans with (automated) robust plans for one patient (group A) that could achieve sufficient clinical tar...

Weyl gauge symmetry at LIGO-Virgo-KAGRA

With current advances in gravitational wave (GW) detection made by the worldwide LIGO-Virgo-KAGRA (LVK) network of detectors, ever-more sensitive tests of gravity in the strong-field regime are now possible. This enables one to test gauge theories beyond Einstein-Hilbert action,...

Classical and quantum mechanics across representations: An operational reading of the Wigner-Weyl correspondence

The physical content of a theory is not intrinsically tied to any single mathematical formalism. Both classical and quantum mechanics admit equivalent representations, notably in phase space and in Hilbert space, related by the Wigner-Weyl correspondence. While this correspondenc...

Spending Operators and Weak Power-Port Decompositions for Path-Dependent Entropic Lagrangians

Path-dependent entropic Lagrangians formulate irreversible evolution through terminal variations of accumulated process power. This paper establishes a mathematical basis for calibrated terminal spending and weak diffusion power-port decompositions. Endpoint calibration and cocyc...

Slow Urbanism Meets University Innovation: A Framework for Integrated Development in Lefke

This study examines how collaboration between universities and municipalities can serve as a strategic catalyst for sustainable local development in small scale cities (SSCs). Using Lefke—a Cittaslow member and university town—as the contextual case, the study introduces the Univ...

Probing quadratically coupled ultralight dark matter with the laser interferometer space antenna

Ultralight dark matter can interact with Standard Model particles via gravitational and non-gravitational interactions. Through such interactions, it can leave distinctive signals in gravitational-wave experiments. In this work, we investigate signals induced by ultralight dark m...

Analysis of polarization drift of optical signals over deployed aerial-inground fiber connections

Polarization measurements of a classical 1550-nm signal are collected and analyzed on 15-km hybrid aerial-inground fiber connections over 11 months. The spectral area and spectral moments of mHz-resolution Fast-Fourier-Transform (FFT) of these measurements are extracted, and rela...

iPSC neurodegenerative disease initiative isogenic CAG repeat iPSC line for Huntington's disease

Purpose of Research: in the KOLF2.1J background as an additional disease series within the iPSC Neurodegenerative Disease Initiative (iNDI) collection. Major Findings: KO, were capable of differentiating to striatal and cortical neurons, astrocytes and microglia using established...

Behavioral Analysis of AI-Assisted User Interaction in a Digital Art Repository

Recent developments in artificial intelligence, including the emergence of generative AI and large language models, have brought changes to user interaction habits as well as interface design. These emerging technologies can be integrated into digital art repositories to reshape...

Dark matter energy exchange in stars orbiting supermassive black holes

Stars on tight orbits around the supermassive black hole at the Galactic Center pass through regions where the dark matter~(DM) density may be strongly enhanced. We compute the orbit-averaged DM-induced energy exchange for S4714 as an example. It is a star on an exceptionally clo...

Scalar vacuum polarization in loop quantum gravity black holes

A quantum macroscopic ``Kruskal'' black hole solution that incorporates quantum geometry effects has been derived in Loop Quantum Gravity as the counterpart to the classical Schwarzschild solution with a distinct imprint outside the event horizon, even at scales much larger than...

Sharper Bounds on the Required Fixed-Point Precision for Emulating Floating-Point Matrix Multiplication

Precision emulation algorithms, such as the Ozaki schemes, can leverage low-precision matrix multiply–accumulate to approximate the product \(AB\) , where \(A\) and \(B\) are high-precision floating-point matrices, via fixed-point arithmetic. A key difficulty of these approaches...

Machine Learning Modeling of Drill Cuttings Transport Based on Computational Fluid Dynamics Simulation Data

ABSTRACT Drill cuttings transport is a critical operation in drilling deep wells. Inefficient removal of cuttings can lead to both hydraulic and mechanical problems during drilling operations. High‐fidelity computational fluid dynamics (CFD) simulations provide detailed insight b...

Scattering amplitudes and resonant processes in QED with chiral chemical potential and chiral magnetic conductivity

A bstract The QED scattering amplitude in a chiral medium characterized by a constant chiral chemical potential μ 5 and chiral magnetic conductivity b 0 is analyzed. We show the emergence of the resonant behavior in 1 → 2, 2 → 2, and 2 → 3 processes. We compute the rates of parad...

An infinite family of counterexamples to a question of Camina

A.R. Camina and R.D. Camina posed the following question: Suppose there are two finite groups, one nilpotent and the other non-nilpotent, and the two groups share identical sets of conjugacy class sizes; must the non-nilpotent group possess a non-trivial center? Recently, W. Zhou...

A unified framework for sensitivity comparison across stimulated Raman, stimulated Raman photothermal, and mid-infrared photothermal microscopy

Label-free vibrational microscopy based on Raman scattering and mid-infrared (MIR) absorption has advanced biological imaging through the development of diverse high-sensitivity modalities. However, rigorous sensitivity comparisons across these techniques remain lacking. Here, we...

A CuO/ZnFe 2 O 4 heterostructure as an efficient catalyst for NaBH 4 -assisted reduction of chloramphenicol

In this study, CuO/ZnFe 2 O 4 heterostructure in the form of flower, consisting of CuO nanorods anchored on ZnFe 2 O 4 microspheres, was successfully synthesized and evaluated for its catalytic reduction of chloramphenicol (CAP) in the presence of NaBH 4 . Structural and morpholo...

Multi-fidelity methods for kinetic models of epidemic dynamics with uncertain contact structure

In this work, we develop a multi-fidelity strategy for kinetic models in epidemiology with uncertain contact dynamics. Assessing and controlling the population-level effects of contact dynamics requires the development of models for understanding observable effects of heterogeneo...

Multi-variable evaluation of agroecosystem models reveals challenges in daily and annual NEE simulation for croplands

Net ecosystem exchange (NEE) of CO₂ is the residual of two opposing fluxes, and accuracy at the modelled NEE level can eclipse compensating errors in its components. This study evaluated DNDCv.CAN and EPIC against multi-variable observations at two Manitoba agricultural sites acr...

Graded Differential Polynomial Rings

ABSTRACT We study differential polynomial rings over ‐graded rings, where is an arbitrary group. We show that admits a ‐grading compatible with that of if and only if is a ‐derivation for some , and that this grading is unique once is fixed; if , then is itself uniquely determine...