Results 1 to 10 of about 81,064 (299)

Support Estimation with Sampling Artifacts and Errors [PDF]

2021 IEEE International Symposium on Information Theory (ISIT), 2021
The problem of estimating the support of a distribution is of great importance in many areas of machine learning, computer science, physics and biology. Most of the existing work in this domain has focused on settings that assume perfectly accurate sampling approaches, which is seldom true in practical data science.
Olgica Milenkovic, Eli Chien, Angelia Nedich   +2 more
openaire   +5 more sources

Measurement of T1 Mapping in Patients With Cardiac Devices: Off-Resonance Error Extends Beyond Visual Artifact but Can Be Quantified and Corrected [PDF]

Frontiers in Cardiovascular Medicine, 2021
Background: Measurement of myocardial T1 is increasingly incorporated into standard cardiovascular magnetic resonance (CMR) protocols, however accuracy may be reduced in patients with metallic cardiovascular implants.
Anish N. Bhuva, Anish N. Bhuva, Thomas A. Treibel, Thomas A. Treibel, Andreas Seraphim, Andreas Seraphim, Paul Scully, Paul Scully, Kristopher D. Knott, Kristopher D. Knott, João B. Augusto, João B. Augusto, Camilla Torlasco, Katia Menacho, Katia Menacho, Clement Lau, Kush Patel, Kush Patel, James C. Moon, James C. Moon, Peter Kellman, Charlotte H. Manisty, Charlotte H. Manisty   +22 more
doaj   +2 more sources

Artifacts and errors in cross-spectrum phase noise measurements [PDF]

Metrologia, 2020
Abstract This article deals with the erratic and inconsistent phase-noise spectra often seen in low-noise oscillators, whose floor is of the order of −180 dBc/Hz or less. Such oscillators are generally measured with two-channel instruments based on averaging two simultaneous and statistically independent measures. Our new method consists
Yannick Gruson, Adrian Rus, Ulrich L Rohde, Alexander Roth, Enrico Rubiola   +4 more
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Some Sources of Errors and Artifacts in Spectrophotometric Measurements [PDF]

Clinical Chemistry, 1975
Abstract Some of the more important functions and limitations of spectrophotometers in relation to biochemical analyses, are described in nonmathematical terms. Possible sources of errors and artifacts are discussed, together with suggestions for avoiding or minimizing such effects.
Keith J. Ellis, John F. Morrison
openaire   +3 more sources

Determination and classification of intraoral phosphor storage plate artifacts and errors [PDF]

Imaging Science in Dentistry, 2019
The aim of this study was to determine the reasons and solutions for intraoral phosphor storage plate (PSP) image artifacts and errors, and to develop an appropriate classification of the artifacts.This study involved the retrospective examination of 5,000 intraoral images that had been obtained using a phosphor plate system.
Yeşim Deniz, Seher Kaya
openaire   +6 more sources

Optimizing Attenuation Correction in ⁶⁸Ga-PSMA PET Imaging Using Deep Learning and Artifact-Free Dataset Refinement [PDF]

Diagnostics
Background/Objectives: Attenuation correction (AC) is essential for achieving quantitatively accurate PET imaging. In 68Ga-PSMA PET, however, artifacts such as respiratory motion, halo effects, and truncation errors in CT-based AC (CT-AC) images ...
Masoumeh Dorri Giv, Guluzar Ozbolat, Hossein Arabi, Somayeh Malmir, Shahrokh Naseri, Vahid Roshan Ravan, Hossein Akbari-Lalimi, Raheleh Tabari Juybari, Ghasem Ali Divband, Nasrin Raeisi, Vahid Reza Dabbagh Kakhki, Emran Askari, Sara Harsini   +12 more
doaj   +2 more sources

Ambulatory Electrocardiographic Monitoring between Artifacts and Misinterpretation, Management Errors of Commission and Errors of Omission [PDF]

Annals of Noninvasive Electrocardiology, 2014
BackgroundThe aim of the study is to contrast the role of conventional ambulatory electrocardiographic monitoring (AEM) artifacts with a less emphasized problem with potentially more serious implications, that is, the failure to recognize, and therefore misinterpret, a genuine arrhythmia episode in the AEM recording.MethodsThe study material included ...
Nabil El-Sherif, Gioia Turitto
openaire   +4 more sources

Artifacts and errors in the measurement of the stickiness of liquid foods with tack tests [PDF]

Journal of Texture Studies, 2021
AbstractWe encounter stickiness in many areas of our daily life and as humans, we are able to discriminate different levels of stickiness. Yet attempts to measure stickiness with instruments have been challenging. One of the commonest approaches has been the “tack test” in which a probe is brought into contact with the sticky food and then pulled away ...
Seyed Mostafa Kazemeini, Andrew J. Rosenthal   +1 more
openaire   +3 more sources

How bad are artifacts?: Analyzing the impact of speech enhancement errors on ASR [PDF]

Interspeech 2022, 2022
It is challenging to improve automatic speech recognition (ASR) performance in noisy conditions with single-channel speech enhancement (SE). In this paper, we investigate the causes of ASR performance degradation by decomposing the SE errors using orthogonal projection-based decomposition (OPD).
Iwamoto, Kazuma, Ochiai, Tsubasa, Delcroix, Marc, Ikeshita, Rintaro, Sato, Hiroshi, Araki, Shoko, Katagiri, Shigeru   +6 more
openaire   +3 more sources

A Model for Geometry-Dependent Errors in Length Artifacts

Journal of Research of the National Institute of Standards and Technology, 2012
We present a detailed model of dimensional changes in long length artifacts, such as step gauges and ball bars, due to bending under gravity. The comprehensive model is based on evaluation of the gauge points relative to the neutral bending surface. It yields the errors observed when the gauge points are located off the neutral bending surface of a bar
Steven D. Phillips, Christopher J. Blackburn, Daniel S. Sawyer, Bala Muralikrishnan, Brian Parry   +4 more
openaire   +4 more sources