22,986 research outputs found
Energy-dependent relative charge transfer cross sections of Cs+ + Rb(5s, 5p)
Magneto optical trap recoil ion momentum spectroscopy is used to measure
energy-dependent charge exchange cross sections in the Cs+ + Rb(5s, 5p) system
over a range of projectile energies from 3.2 to 6.4 keV. The measurements are
kinematically complete and yield cross sections that are differential in
collision energy, scattering angle, and initial and final states
Wearable Sensor Data Based Human Activity Recognition using Machine Learning: A new approach
Recent years have witnessed the rapid development of human activity
recognition (HAR) based on wearable sensor data. One can find many practical
applications in this area, especially in the field of health care. Many machine
learning algorithms such as Decision Trees, Support Vector Machine, Naive
Bayes, K-Nearest Neighbor, and Multilayer Perceptron are successfully used in
HAR. Although these methods are fast and easy for implementation, they still
have some limitations due to poor performance in a number of situations. In
this paper, we propose a novel method based on the ensemble learning to boost
the performance of these machine learning methods for HAR
The brezis-ekeland-nayroles minimization principle with mixed finite element method for elastoplastic dynamic problems
We propose a modification of the Hamiltonian formalism which can be used for dissipative systems, the Brezis-Ekeland-Nayroles principle. The formalism is specialized to the standard plasticity in small strains and dynamics. We apply it to solve the classical problem of a thin tube in plane strain subjected to an internal pressure. The continuum is discretized with mixed finite elements
Minimum-fuel aeroassisted coplanar orbit transfer using lift-modulation
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76271/1/AIAA-19945-331.pd
Minimum-fuel aeroassisted coplanar orbit transfer using lift-modulation
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76954/1/AIAA-1983-2094-112.pd
Optimal plane change during constant altitude hypersonic flight
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76559/1/AIAA-1988-4341-460.pd
Orbital changes during hypersonic aerocruise
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76648/1/AIAA-1987-2564-435.pd
Resolution in Linguistic Propositional Logic based on Linear Symmetrical Hedge Algebra
The paper introduces a propositional linguistic logic that serves as the
basis for automated uncertain reasoning with linguistic information. First, we
build a linguistic logic system with truth value domain based on a linear
symmetrical hedge algebra. Then, we consider G\"{o}del's t-norm and t-conorm to
define the logical connectives for our logic. Next, we present a resolution
inference rule, in which two clauses having contradictory linguistic truth
values can be resolved. We also give the concept of reliability in order to
capture the approximative nature of the resolution inference rule. Finally, we
propose a resolution procedure with the maximal reliability.Comment: KSE 2013 conferenc
Sound-Dr: Reliable Sound Dataset and Baseline Artificial Intelligence System for Respiratory Illnesses
As the burden of respiratory diseases continues to fall on society worldwide,
this paper proposes a high-quality and reliable dataset of human sounds for
studying respiratory illnesses, including pneumonia and COVID-19. It consists
of coughing, mouth breathing, and nose breathing sounds together with metadata
on related clinical characteristics. We also develop a proof-of-concept system
for establishing baselines and benchmarking against multiple datasets, such as
Coswara and COUGHVID. Our comprehensive experiments show that the Sound-Dr
dataset has richer features, better performance, and is more robust to dataset
shifts in various machine learning tasks. It is promising for a wide range of
real-time applications on mobile devices. The proposed dataset and system will
serve as practical tools to support healthcare professionals in diagnosing
respiratory disorders. The dataset and code are publicly available here:
https://github.com/ReML-AI/Sound-Dr/.Comment: 9 pages, PHMAP2023, PH
- …