Results 81 to 90 of about 137,229 (305)

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

open access: yesAnnals 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   +14 more
wiley   +1 more source

Market Orientation, Customer Selectivity and Firm Performance [PDF]

open access: yes, 2008
Market orientation is a well-known construct in the marketing literature. One reason for the extensive research on market orientation is that it is seen as the operationalization of the marketing concept itself.
Khan, Aamir
core  

Curvature and orientation estimation by neuronal structures [PDF]

open access: yes, 2000
It is presented a simple model of curvature and orientation estimation by neuronal networks where a pair of neurons is used to approximate the partial differential operators needed for curvature and orientation estimation.
Da Fontoura Costa, Luciano   +2 more
core   +1 more source

Design and implementation of AHRS/GPS/DR Navigation algorithm applied to long-range AUVs with high underwater durability

open access: yesنشریه مهندسی دریا, 2018
Time-growing navigation error due to inevitable measurement errors in the MEMS-grade inertial sensor is one of the main challenges in low-cost inertial navigation systems (INSs).
Ebrahim Alizadeh   +3 more
doaj  

Orientation estimation for instrumented helmet using neural networks

open access: yesMeasurement + Control, 2023
This work presents an integrated solution for head orientation estimation, which is a critical component for applications of virtual and augmented reality systems.
Muhammad Hamad Zaheer   +2 more
doaj   +1 more source

Normal‐Appearing White Matter Injury Mediates Chronic Deep Venous Hypoxia and Disease Progression in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang   +8 more
wiley   +1 more source

Wireless Device Orientation Estimation [PDF]

open access: yes, 2017
Estimation of wireless device location (localization) has been studied extensively for its usefulness in network infrastructures. However, the related issue of determining device orientation has received less attention.
Heidtke, Derek W
core  

Rotation Equivariant Orientation Estimation for Omnidirectional Localization [PDF]

open access: yes, 2021
Deep learning based 6-degree-of-freedom (6-DoF) direct camera pose estimation is highly efficient at test time and can achieve accurate results in challenging, weakly textured environments. Typically, however, it requires large amounts of training images,
Liwicki, S   +4 more
core  

CSF Monoamine Metabolites and Cognitive Trajectory in Early Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Imaging and postmortem studies indicate that abnormalities in monoaminergic neurotransmission contribute to cognitive impairment in Parkinson's disease (PD). However, it remains uncertain if cerebrospinal fluid (CSF) monoamine metabolites can serve as biomarkers of cognitive decline in early PD.
Jing‐Yu Shao   +7 more
wiley   +1 more source

RNA Sequencing Resolves Cryptic Pathogenic Variants in Mitochondrial Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Mitochondrial diseases are the most common inherited metabolic disorders, characterized by pronounced clinical and genetic heterogeneity that complicates molecular diagnosis. Although DNA‐based sequencing approaches have become standard in genetic testing, up to half of patients remain without a definitive diagnosis.
Zhimei Liu   +21 more
wiley   +1 more source

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