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Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito, Chiara Meneghini, Alice Galli, Luca Gallo, Pierfrancesco Mitrotti, Paola Dimartino, Marianna Inglese, Cinzia Zatti, Alessandro Lupini, Andrea Pilotto, Alessandro Padovani, Micol Avenali, Enza Maria Valente, Cristina Tassorelli, Silvia P. Caminiti   +14 more
wiley   +1 more source

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Beyond the impact approximation

Physics Letters, Section A: General, Atomic and Solid State Physics, 1969
Abstract A simple derivation of the impact approximation is given and a more general binary interaction theory is proposed, which is valid in the region between the impact and the static regime for isolated lines.
H Van Regemorter
exaly   +2 more sources

Impact of Layers Selective Approximation on CNNs Reliability and Performance

2020 IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFT), 2020
In this paper, we evaluate the impact on reliability and performance of the selective approximation of Convolutional Neural Networks (CNNs) layers on NVIDIA mixed-precision architectures. We found that, even without affecting accuracy, the approximation from single to half precision of each layer has a different impact on both performance and output ...
Paolo Rech
exaly   +2 more sources

Improved Approximations for a Beam Impacting a Stop

Journal of Sound and Vibration, 1994
Abstract Illustrative comparisons are given of several numerical procedures for finding the contact forces and their peak values when an elastic beam collides repeatedly with a resilient stop. Computational efficiency is shown to depend upon the variable of interest.
Fathi, A., Popplewell, N.
openaire   +2 more sources

Impact of Memory Approximation on Energy Efficiency

2018 Symposium on High Performance Computing Systems (WSCAD), 2018
Approximate memories can lower energy consumption at expense of incurring errors in some of the read/write operations. While these errors may be tolerated in some cases, in general, parts of the application must be re-executed to achieve usable results when a large number of errors occur.
Isaías B. Felzmann, João Fabrício Filho, Rodolfo Azevedo, Lucas Francisco Wanner   +3 more
openaire   +1 more source

The impact of excluding common blocks for approximate matching

Computers & Security, 2020
Abstract Approximate matching functions allow the identification of similarity (bytewise level) in a very efficient way, by creating and comparing compact representations of objects (a.k.a digests). However, many similarity matches occur due to common data that repeats over many different files and consist of inner structure, header and footer ...
Vitor Hugo Galhardo Moia, Frank Breitinger, Marco Aurélio Amaral Henriques   +2 more
openaire   +1 more source

On the Lambert–Jonas approximation for ballistic impact

Mechanics Research Communications, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ben-Dor, G., Dubinsky, A., Elperin, T.
openaire   +2 more sources

Approximation et existence en vibro-impact

Comptes Rendus de l'Académie des Sciences - Series I - Mathematics, 1999
Summary: We consider a dynamical system with a finite number of degrees of freedom, in generalized coordinates, subject to unilateral constraints, which are smooth, but not necessarily convex. When the constraints are saturated, we define an impact law involving a restitution coefficient \(e\in[0,1]\).
Paoli, Laetitia, Schatzman, Michelle
openaire   +2 more sources

Analyzing the Impact of Approximate Adders on the Reliability of FPGA Accelerators

2021 IEEE European Test Symposium (ETS), 2021
In this paper, we evaluate the impact of approximate adders on the reliability of FPGA-based accelerators for applications that present inherent error resilience. We perform an exhaustive fault injection campaign to examine the effects of single bit upsets (SEUs) in the adders in the DCT block of a JPEG encoder IP core.
Ioannis Tsounis, Athanasios Papadimitriou, Mihalis Psarakis   +2 more
openaire   +1 more source

An Approximate Treatment of Blunt Body Impact

Journal of Elasticity, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Knops, R. J., Villaggio, Piero
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