Operator Identification and Feichtinger’s Algebra

2006 ◽  
Vol 5 (2) ◽  
pp. 183-200
Author(s):  
Götz E. Pfander ◽  
David F. Walnut
Keyword(s):  
Operator Identification

scholarly journals A Time-Frequency Density Criterion for Operator Identification

2013 ◽  
Vol 12 (1) ◽  
pp. 1-19
Author(s):  
Niklas Grip ◽  
Götz E. Pfander ◽  
Peter Rashkov
Keyword(s):  
Time Frequency ◽  
Operator Identification

Compactness and Weak Compactness in Spaces of Compact-Range Vector Measures

1984 ◽  
Vol 36 (6) ◽  
pp. 1000-1020 ◽  
Author(s):  
William H. Graves ◽  
Wolfgang Ruess
Keyword(s):  
Weak Compactness ◽  
Linear Operators ◽  
Continuous Linear ◽  
Vector Measures ◽  
Compact Range ◽  
Measure Topology ◽  
Range Vector ◽  
Operator Identification ◽  
Additive Measures ◽  
Continuous Linear Operators

This paper features strong and weak compactness in spaces of vector measures with relatively compact ranges in Banach spaces. Its tools are the measure-operator identification of [16] and [24] and the description of strong and weak compactness in spaces of compact operators in [10], [11], and [29].Given a Banach space X and an algebra of sets, it is shown in [16] that under the usual identification via integration of X-valued bounded additive measures on with X-valued sup norm continuous linear operators on the space of -simple scalar functions, the strongly bounded, countably additive measures correspond exactly to those operators which are continuous for the coarser (locally convex) universal measure topology τ on . It is through the latter identification that the results on strong and weak compactness in [10], [11], and [29] can be applied to X-valued continuous linear operators on the generalized DF space to yield results on strong and weak compactness in spaces of vector measures.

scholarly journals Human identification and tracking using ultra-wideband-vision data fusion in unstructured environments

ACTA IMEKO ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 124
Author(s):  
Alessandro Luchetti ◽  
Andrea Carollo ◽  
Luca Santoro ◽  
Matteo Nardello ◽  
Davide Brunelli ◽  
...  
Keyword(s):  
Sensor Fusion ◽  
Vision System ◽  
Tracking System ◽  
Low Cost ◽  
Automated Guided Vehicles ◽  
Ultra Wideband ◽  
Radial Coordinate ◽  
Unstructured Environments ◽  
Real Time Tracking ◽  
Operator Identification

<p class="Abstract">Nowadays, the importance of working in changing and unstructured environments such as logistics warehouses through the cooperation between Automated Guided Vehicles (AGV) and the operator is increasingly demanded. The challenge addressed in this article aims to solve two crucial functions of autonomy: operator identification, and tracking. These tasks are necessary to enable an AGV to follow the selected operator along his path. This paper presents an innovative, accurate, robust, autonomous, and low-cost operator real-time tracking system, leveraging the inherent complementarity of the uncertainty regions (2D ellipses) between ultra-wideband (UWB) transceivers and cameras. The test campaign shows how the UWB system has higher uncertainty in the angular direction. In contrast, in the case of the vision system, the uncertainty is predominant along the radial coordinate. Due to the nature of the data, a sensor fusion demonstrates improvement in the accuracy and goodness of the final tracking.</p>

A simplified operator identification scheme for Ada

1980 ◽  
Vol 15 (7 and 8) ◽  
pp. 82-87 ◽  
Author(s):  
Tom Pennello ◽  
Frank DeRemer ◽  
Richard Meyers
Keyword(s):  
Identification Scheme ◽  
Operator Identification

scholarly journals Cathlab department diagnostic reference levels and trigger values analysis

2021 ◽  
Vol 31 (Supplement_2) ◽  
Author(s):  
Angela Cortez ◽  
Joana Santos ◽  
João Costa ◽  
Graciano Paulo
Keyword(s):  
Diagnostic Procedures ◽  
Interventional Cardiology ◽  
Patient Characteristics ◽  
Fluoroscopy Time ◽  
Diagnostic Reference Levels ◽  
Reference Levels ◽  
Area Product ◽  
The Right ◽  
Operator Identification

Abstract Background This study aims to assess the examination dose values in interventional cardiology procedures to establish diagnostic reference levels and analyse number of procedures that exceed trigger values. Methods Data about the procedure type, operator identification, procedure access, patient characteristics (gender, age and weight), fluoroscopy time (min), Kerma Area Product - PKA (Gy.cm2), was retrospectively collected, for a period of 12 months. Patients were categorised in three weight groups: low ( &lt; 65 kg), standard (65–75kg) and high ( &gt; 75 kg). Results he majority of the 2540 examinations were diagnostic procedures (65%) and the more common access was via the right radial artery (92%). Significant differences (P &lt; 0.05) in fluoroscopy time and PKA values, between procedure access, patient weight group and type of procedure were found. The trigger level of PKA ( &gt; 300Gy.cm2) value was exceeded in 0.5% of the procedures, lower than the incidence found in the literature. The local DRL values for diagnostic and therapeutical procedures were respectively 39 and 111 Gy.cm2, in line with values published in the literature. Conclusions The dose distribution is in line with the ones found in the literature. The percentage of patients that exceed one of trigger levels is lower when compared with the literature, however a patient follow-up plan should be established.

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