205 research outputs found
Efficiency and Patient-Reported Outcome Measures From Clinic to Home: The Human Empowerment Aging and Disability Program for Digital-Health Rehabilitation
Background: The recent exponential growth of Digital Health (DH) in the healthcare system provides a crucial transformation in healthcare, answering to alarming threats related to the increasing number of Chronic Neurological Diseases (CNDs). New long-term integrated DH-care approaches, including rehabilitation, are warranted to address these concerns.
Methods: The Human Empowerment Aging and Disability (HEAD) rehabilitation program, a new long-term integrated care including DH-care system, was evaluated in terms of efficiency and patient-reported outcome measures (PROMs) in 107 CND patients (30 with Parkinson's Disease, PD; 32 with Multiple Sclerosis, MS; 45 with stroke in chronic stage). All participants followed 1-month of HEAD rehabilitation in clinic (ClinicHEAD: 12 sessions, 3/week), then 1:3 patient was consecutively allocated to 3-months telerehabilitation at home (HomeHEAD: 60 sessions, 5/week). Efficiency (i.e., adherence, usability, and acceptability) and PROMs (i.e., perceived functioning in real-world) were analyzed.
Results: The rate of adherence to HEAD treatment in clinic (≥90%) and at home (77%) was high. Usability of HEAD system was judged as good (System Usability Scale, median 70.00) in clinic and even more at home (median 80.00). Similarly, administering the Technology Acceptance Model 3 questionnaire we found high scores both in clinic/at home (Usefulness, mean 5.39 ± 1.41 SD/mean 5.33 ± 1.29 SD; Ease of use, mean 5.55 ± 1.05 SD/ mean 5.45 ± 1.17 SD, External Control, mean 4.94 ± 1.17 SD/mean 5.07 ± 1.01 SD, Relevance, mean 5.68 ± 1.29 SD/mean 5.70 ± 1.13 SD and Enjoyment, mean 5.70 ± 1.40 SD/mean 6.01 ± 1.08 SD). After ClinicHEAD, participation and autonomy in daily routine was maintained or even ameliorated (PD and stroke > MS). Whereas, increased functionality and participation in the MS group was found only after HomeHEAD intervention.
Discussion: Our results suggest that a tele-health-based approach is both feasible and efficient in providing rehabilitation care to CNDs from clinic to home. Increasing and maintaining participation as well as autonomy in daily routine are promising findings that open up scenarios for the continuity of care at home through DH-care for CNDs
Design and Analysis of the Cis-Lunar Navigation for the ArgoMoon CubeSat Mission
In the framework of the Artemis-1 mission, 10 CubeSats will be released, including the 6U CubeSat ArgoMoon, built by the Italian company Argotec and coordinated by the Italian Space Agency. The primary goal of ArgoMoon is to capture images of the Interim Cryogenic Propulsion Stage. Then, ArgoMoon will be placed into a highly elliptical orbit around the Earth with several encounters with the Moon. In this phase, the navigation process will require a precise Orbit Determination (OD) and a Flight Path Control (FPC) to satisfy the navigation requirements. The OD will estimate the spacecraft trajectory using ground-based radiometric observables. The FPC is based on an optimal control strategy designed to reduce the dispersion with respect to the reference trajectory and minimize the total ΔV. A linear approach was used to determine the optimal targets and the number and location of the orbital maneuvers. A covariance analysis was performed to assess the expected OD performance and its robustness. The analysis results show that the reference translunar trajectory can be successfully flown and the navigation performance is strongly dependent on the uncertainties of the ArgoMoon’s Propulsion Subsystem and of the orbit injection
Radio Occultation Measurements of Europa's Ionosphere From Juno's Close Flyby
On 29 September 2022 the Juno spacecraft flew within 354 km of Europa's surface while several instruments probed the moon's surroundings. During the close flyby, radio occultations were performed by collecting single-frequency Doppler measurements. These investigations are essential to the study of Europa's ionosphere and represent the first repeat sampling of any set of conditions since the Galileo era. Ingress measurements resulted in a marginal detection with a peak ionospheric density of 4,000 ± 3,700 cm−3 (3σ) at 22 km altitude. A more significant detection emerged on egress, with a peak density of 6,000 ± 3,000 cm−3 (3σ) at 320 km altitude. Comparison with Galileo measurements reveals a consistent picture of Europa's ionosphere, and confirms its dependence on illumination conditions and position within Jupiter's magnetosphere. However, the overall lower densities measured by Juno suggest a dependence on time of observation, with implications for the structure of the neutral atmosphere
The Hera Radio Science Experiment at Didymos
Hera represents the European Space Agency's inaugural planetary defence space
mission, and plays a pivotal role in the Asteroid Impact and Deflection
Assessment international collaboration with NASA DART mission that performed
the first asteroid deflection experiment using the kinetic impactor techniques.
With the primary objective of conducting a detailed post-impact survey of the
Didymos binary asteroid following the DART impact on its small moon called
Dimorphos, Hera aims to comprehensively assess and characterize the feasibility
of the kinetic impactor technique in asteroid deflection while conducting
in-depth investigation of the asteroid binary, including its physical and
compositional properties as well as the effect of the impact on the surface
and/or shape of Dimorphos. In this work we describe the Hera radio science
experiment, which will allow us to precisely estimate key parameters, including
the mass, which is required to determine the momentum enhancement resulting
from the DART impact, mass distribution, rotational states, relative orbits,
and dynamics of the asteroids Didymos and Dimorphos. Through a multi-arc
covariance analysis we present the achievable accuracy for these parameters,
which consider the full expected asteroid phase and are based on ground
radiometric, Hera optical images, and Hera to CubeSats InterSatellite Link
radiometric measurements. The expected formal uncertainties for Didymos and
Dimorphos GM are better than 0.01% and 0.1%, respectively, while their J2
formal uncertainties are better than 0.1% and 10%, respectively. Regarding
their rotational state, the absolute spin pole orientations of the bodies can
be recovered to better than 1 degree, and Dimorphos spin rate to better than
10^-3%. Dimorphos reconstructed relative orbit can be estimated at the sub-m
level [...
PARSIFAL: a toolkit for triple-GEM parametrized simulation
PARSIFAL (PARametrized SImulation) is a tool which reproduces a triple-GEM
detector full response to the passage of a charged particle, taking into
account most of the involved physical effects. A triple-GEM is a gaseous
detector that amplifies the primary ionization, generated by the incoming
radiation interacting with the gas, through three amplification stages,
providing position measurement with a resolution around 100 micron, energy
resolution better than 20% and time resolution below 10 ns. Despite well known
and robust software such as GARFIELD++ can simulate the electron propagation in
gas and the interaction with the electric field, considering the avalanche
formation and signal creation, they are CPU-time consuming. The necessity to
reduce the processing time while maintaining the precision of a full simulation
is the main driver of this work. PARSIFAL takes into account the main processes
involved in the signal formation, starting from ionization, spatial and
temporal diffusion, the effect of the magnetic field, if any, and GEM
amplification properties. The induction of the signal and the electronics
response are also present. PARSIFAL parameters are evaluated by means of
GARFIELD++ simulations; the results of the simulation are compared to
experimental data from testbeam and tuning factors are applied to improve the
matching.Comment: submitted to JINS
Track-based alignment for the BESIII CGEM detector in the cosmic-ray test
The Beijing Electron Spectrometer III (BESIII) is a multipurpose detector
operating on the Beijing Electron Positron Collider II (BEPCII). After more
than ten year's operation, the efficiency of the inner layers of the Main Drift
Chamber (MDC) decreased significantly. To solve this issue, the BESIII
collaboration is planning to replace the inner part of the MDC with three
layers of Cylindrical triple-Gas Electron Multipliers (CGEM).
The new features of the CGEM detector will improve the spatial resolution to
130 m. To meet this goal, a careful calibration of the detector is
necessary to fully exploit the potential of the CGEM detector. In all the
calibrations, the detector alignment plays an important role to improve the
detector precision. The track-based alignment for the CGEM detector with the
Millepede algorithm is implemented to reduce the uncertainties of the hit
position measurement. Using the cosmic-ray data taken in 2020 with the two
layers setup, the displacement of the outer layer with respect to the inner
layer is determined by a simultaneous fit applied to more than 160000 tracks. A
good alignment precision has been achieved that guarantees the design request
could be satisfied in the future. A further alignment will be performed using
the combined information of tracks from cosmic-ray and collisions after the
CGEM is installed into the BESIII detector
- …