A Fast Universal Kinematic Fitting code for low-energy nuclear physics: FUNKI_FIT. (arXiv:1911.10200v1 [physics.ins-det])

We present an open source kinematic fitting routine designed for low-energy nuclear physics applications. Although kinematic fitting is commonly used in high-energy particle physics, it is rarely used in low-energy nuclear physics, despite its effectiveness. A FORTRAN and ROOT C++ version of the FUNKI_FIT kinematic fitting code have been developed and published open access. The…

From power law to Anderson localization in nonlinear Schr\”odinger equation with nonlinear randomness. (arXiv:1911.10222v1 [cond-mat.dis-nn])

We study the propagation of coherent waves in a nonlinearly-induced random potential, and find regimes of self-organized criticality and other regimes where the nonlinear equivalent of Anderson localization prevails. The regime of self-organized criticality leads to power-law decay of transport [Phys. Rev. Lett. 121, 233901 (2018)], whereas the second regime exhibits exponential decay.

A fast multi-resolution lattice Green’s function method for elliptic difference equations. (arXiv:1911.10228v1 [physics.comp-ph])

We propose a mesh refinement technique for solving elliptic difference equations on unbounded domains based on the fast lattice Green’s function (FLGF) method. The FLGF method exploits the regularity of the Cartesian mesh and uses the fast multipole method in conjunction with fast Fourier transforms to yield linear complexity and decrease time-to-solution. We extend this…

Angular Scattering in Charge Exchange: Issues and Implications for Secondary Interstellar Hydrogen. (arXiv:1911.10230v1 [physics.space-ph])

Interstellar neutral atoms provide a remote diagnostic of plasma in the outer heliosheath and the very local interstellar medium via charge exchange collisions that convert ions into atoms and vice versa. So far, most studies of interstellar atoms assumed that daughter hydrogen atoms directly inherit the kinetic properties of parent protons. This assumption neglects angular…

Prediction of individual progression rate in Parkinson’s disease using clinical measures and biomechanical measures of gait and postural stability. (arXiv:1911.10227v1 [eess.SP])

Parkinson’s disease (PD) is a common neurological disorder characterized by gait impairment. PD has no cure, and an impediment to developing a treatment is the lack of any accepted method to predict disease progression rate. The primary aim of this study was to develop a model using clinical measures and biomechanical measures of gait and…

Improved motion correction for functional MRI using an omnibus regression model. (arXiv:1911.10229v1 [eess.IV])

Head motion during functional Magnetic Resonance Imaging acquisition can significantly contaminate the neural signal and introduce spurious, distance-dependent changes in signal correlations. This can heavily confound studies of development, aging, and disease. Previous approaches to suppress head motion artifacts have involved sequential regression of nuisance covariates, but this has been shown to reintroduce artifacts. We…

Design and Autonomous Stabilization of a Ballistically Launched Multirotor. (arXiv:1911.10269v1 [eess.SY])

Aircraft that can launch ballistically and then convert to autonomous, free flying drones have applications in many areas, such as emergency response, defense, and space exploration, where they can gather critical situational data using onboard sensors. In previous work, we presented a proof of concept, manually stabilized folding multirotor that deploys from a pressurized tube…

Enlarged Controllability and Optimal Control of Sub-Diffusion Processes with Caputo Fractional Derivatives. (arXiv:1911.10199v1 [math.OC])

We investigate the exact enlarged controllability and optimal control of a fractional diffusion equation in Caputo sense. This is done through a new definition of enlarged controllability that allows us to extend available contributions. Moreover, the problem is studied using two approaches: a reverse Hilbert uniqueness method, generalizing the approach introduced by Lions in 1988,…