Results 121 to 130 of about 2,491,773 (298)

Accuracy analysis of pointing control system of solar power station [PDF]

open access: yes, 1978
The first-phase effort concentrated on defining the minimum basic functions that the retrodirective array must perform, identifying circuits that are capable of satisfying the basic functions, and looking at some of the error sources in the system and ...
Hung, J. C., Peebles, P. Z., Jr.
core  

Dimethyl Fumarate, But Not Rituximab, Reduces Serum GFAP Levels and PIRMA in Relapsing–Remitting MS

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Serum neurofilament light chain (sNfL) and glial fibrillary acidic protein (sGFAP) levels are believed to reflect mainly acute and chronic disease processes in multiple sclerosis (MS), respectively. In this study, we investigated whether dimethyl fumarate (DMF) and rituximab (RTX) differentially affect these biomarkers.
F. Shawket   +14 more
wiley   +1 more source

RF-Assisted Compensation for Rapid Optical Acquisition in Hybrid Inter-Satellite Links

open access: yesIEEE Open Journal of the Communications Society
Establishing Optical Inter-Satellite Links (O-ISLs) requires sub-degree pointing accuracy between fast-moving satellites, a challenge resulting from actuator limitations and positioning uncertainties.
Elena Fernandez-Nino   +3 more
doaj   +1 more source

Ground Truth in Classification Accuracy Assessment: Myth and Reality [PDF]

open access: yes
The ground reference dataset used in the assessment of classification accuracy is typically assumed implicitly to be perfect (i.e., 100% correct and representing ground truth).
Foody, Giles M., Giles M. Foody
core   +1 more source

Memory and Resting‐State Connectivity in Acute Transient Global Amnesia: A Case–Control fMRI Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Transient global amnesia (TGA) is a striking model of isolated amnesia. While hippocampal lesions are well described, the network‐level mechanisms and the precise neuropsychological profile remain debated. Our objective was thus to characterize functional and neuropsychological correlates of acute TGA and their ...
Elias El Otmani   +10 more
wiley   +1 more source

The effects of radomes on the pointing accuracy of antennas.

open access: yes, 1972
The pointing accuracy of the tracking antenna used in a radar guided homing missile is reduced by a streamlined radome. This can have serious effects on the missile's performance. The pointing error of a microwave antenna inside a radome can be predicted
Tyers, Brian Albert.
core  

Adaptive Pointing Design and Evaluation of a Precision Enhancing Technique for Absolute Pointing Devices

open access: yes, 2009
We present Adaptive Pointing, a novel approach to addressing the common problem of accuracy when using absolute pointing devices for distant interaction.
Werner A. König   +7 more
core   +1 more source

Sertraline Treatment Can Mimic Niemann‐Pick Type C Biomarker Profile: A Diagnostic Pitfall

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Oxysterols (cholestane‐3β,5α,6β‐triol and 7‐ketocholesterol) and N‐palmitoyl‐O‐phosphocholineserine (PPCS) are sensitive biomarkers for Niemann‐Pick disease type C (NPC) screening. However, false‐positive results occur, with a biomarker profile suggestive of NPC despite the absence of pathogenic variants in genes involved in NPC or ...
Maria Makrygianni   +19 more
wiley   +1 more source

Association Between Motor Pathway Damage and Motor Deficit in Upper and Lower Limb in People With MS

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Corticospinal tract damage is common in people with MS, but the degree of clinical symptoms varies. We hypothesize that corticospinal tract lesions are more extensive and severe in people with MS with motor impairments in both upper and lower limbs.
Mathilde Liffran   +13 more
wiley   +1 more source

On Estimation Accuracy of Points Displacement

open access: yesActa Montanistica Slovaca, 2009
In the paper the estimates of position accuracy are given which are based on consistent and subsequent use of the true and meansquare errors propagation laws. Firstly the covariance matrices MU of the simple functions FX , FY, FZ of measured quantities L i, e.g.of the coordinates X, Y, Z of determined points U, are computed for each of the two ...
openaire   +1 more source

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