scholarly journals Reliability Monitoring of Laser Scanner Based Navigation

2020 ◽  
Vol 14 ◽  
Keyword(s):  
At Risk ◽  
Real Time ◽  
Laser Scanner ◽  
Current Speed ◽  
Application Area ◽  
Position Detection ◽  
Measured Position ◽  
Minimum Distances ◽  
Alternative Routes ◽  
Reliability Monitoring

Autonomous guided vehicles have great advantages over rigidly track-guided conveyor technology, as they can react flexibly to changes in the application area. Temporary obstacles can be easily avoided. The vehicles can circumnavigate bottlenecks and areas at risk of congestion switch to alternative routes. To avoid accidents, safety-relevant position detection is necessary in many areas. The current speed is derived from this driven trajectory and this is safely reduced in the working areas. Minimum distances can also be safely maintained. Therefore it is necessary to permanently control the measured position with regard to disturbance variables and to monitor the reliability of the position detection in real time.

scholarly journals Assessment of the Accuracy of a Multi-Beam LED Scanner Sensor for Measuring Olive Canopies

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4406 ◽  
Author(s):  
Rafael Sola-Guirado ◽  
Sergio Bayano-Tejero ◽  
Antonio Rodríguez-Lizana ◽  
Jesús Gil-Ribes ◽  
Antonio Miranda-Fuentes
Keyword(s):  
Laboratory Test ◽  
Real Time ◽  
Relative Error ◽  
Laser Scanner ◽  
Field Tests ◽  
High Accuracy ◽  
Field Conditions ◽  
Canopy Trees ◽  
Canopy Volume

Canopy characterization has become important when trying to optimize any kind of agricultural operation in high-growing crops, such as olive. Many sensors and techniques have reported satisfactory results in these approaches and in this work a 2D laser scanner was explored for measuring canopy trees in real-time conditions. The sensor was tested in both laboratory and field conditions to check its accuracy, its cone width, and its ability to characterize olive canopies in situ. The sensor was mounted on a mast and tested in laboratory conditions to check: (i) its accuracy at different measurement distances; (ii) its measurement cone width with different reflectivity targets; and (iii) the influence of the target’s density on its accuracy. The field tests involved both isolated and hedgerow orchards, in which the measurements were taken manually and with the sensor. The canopy volume was estimated with a methodology consisting of revolving or extruding the canopy contour. The sensor showed high accuracy in the laboratory test, except for the measurements performed at 1.0 m distance, with 60 mm error (6%). Otherwise, error remained below 20 mm (1% relative error). The cone width depended on the target reflectivity. The accuracy decreased with the target density.

Utilization of a computerized program to identify nutritionally at risk patients in real time

2001 ◽  
Vol 101 (9) ◽  
pp. A-9
Author(s):  
P.A. Pullen ◽  
A.T. DeFrancesco ◽  
M.M. Wrana ◽  
J. Moen ◽  
D. Korchnak ◽  
...  
Keyword(s):  
At Risk ◽  
Real Time ◽  
Risk Patients

Incidence, Severity, and Timing of Subependymal and Intraventricular Hemorrhages in Preterm Infants Born in a Perinatal Unit as Detected by Serial Real-Time Ultrasound

PEDIATRICS ◽  
1983 ◽  
Vol 71 (4) ◽  
pp. 541-546 ◽  
Author(s):  
Tzipora Dolfin ◽  
Martin B. Skidmore ◽  
Katherine W. Fong ◽  
Elizabeth M. Hoskins ◽  
Andrew T. Shennan
Keyword(s):  
At Risk ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Real Time ◽  
Preterm Infants ◽  
Intraventricular Hemorrhage ◽  
Study Group ◽  
Low Birth Weight Infants ◽  
Grade Iii

Real-time ultrasound scans were performed on 66 low-birth-weight infants within the first six hours of life (mean, two hours), and then at 12, 24, 48, and 72 hours, and thereafter at weekly intervals. All of the infants were born in a perinatal unit. The incidence of intraventricular hemorrhage and subependymal hemorrhage was 31%. Eight of 20 infants had small hemorrhages (Papile, grades I and II); seven infants sustained grade III hemorrhages, and five infants sustained grade Iv hemorrhages. All hemorrhages occurred in the first 72 hours of life; 25% were diagnosed with the first scan (ie, within the first six hours of life). The infants especially at risk were those less than 29 weeks's gestation. Five infants developed progressive posthemorrhagic ventriculomegaly that subsided spontaneously by age 8 weeks. The mortality in the study group was only 4.5%.

Real-Time Measurement of Ion Energies for Heavy Ions

2016 ◽  
Vol 698 ◽  
pp. 157-162
Author(s):  
Akihito Yokoyama ◽  
Wataru Kada ◽  
Takahiro Satoh ◽  
Masashi Koka ◽  
Yuya Yokota ◽  
...  
Keyword(s):  
Real Time ◽  
Heavy Ions ◽  
Ion Irradiation ◽  
Detection System ◽  
Objective Lens ◽  
Charge Coupled Device ◽  
Annealing Conditions ◽  
Real Time Measurement ◽  
Position Detection ◽  
Time Position

A real-time position detection system is developed for measuring heavy ions with low fluence and energy of several hundred MeV, which are generated from an azimuthally varying field (AVF) cyclotron accelerator. We investigate the photoluminescence of α-Al2O3 single crystals implanted with Eu (Al2O3:Eu), which is used in the detection system. The Al2O3:Eu scintillators with a fluence of 3.0 × 1016 cm−2 are annealed at 500–900°C. The annealing conditions required for the Al2O3:Eu scintillators to obtain the maximum luminescence are 0.5 h at 600°C. The scintillator is placed on the AVF cyclotron target stage under atmospheric pressure and is irradiated by 260-MeV Ne. An inverted confocal microscope with a ×10 objective lens is positioned behind the Al2O3:Eu scintillator, and the luminescent images during ion irradiation are obtained by a position-sensitive camera unit with a 512 × 512 pixel electron multiplying charge-coupled device. The images indicate that our online measurement system has a sufficient spatial resolution, since the luminous diameter induced by irradiation with 190 ions /s is almost the same as that of the microbeam.

scholarly journals Real-time utilisation of administrative data in the ED to identify older patients at risk: development and validation of the Dynamic Silver Code

BMJ Open ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. e033374 ◽  
Author(s):  
Daniela Balzi ◽  
Giulia Carreras ◽  
Francesco Tonarelli ◽  
Luca Degli Esposti ◽  
Paola Michelozzi ◽  
...  
Keyword(s):  
At Risk ◽  
Cohort Study ◽  
Real Time ◽  
Administrative Data ◽  
Older Patients ◽  
Clinical Decision Making ◽  
External Validation ◽  
Clinical Decision ◽  
Patients At Risk ◽  
Ed Visits

ObjectiveIdentification of older patients at risk, among those accessing the emergency department (ED), may support clinical decision-making. To this purpose, we developed and validated the Dynamic Silver Code (DSC), a score based on real-time linkage of administrative data.Design and settingThe ‘Silver Code National Project (SCNP)’, a non-concurrent cohort study, was used for retrospective development and internal validation of the DSC. External validation was obtained in the ‘Anziani in DEA (AIDEA)’ concurrent cohort study, where the DSC was generated by the software routinely used in the ED.ParticipantsThe SCNP contained 281 321 records of 180 079 residents aged 75+ years from Tuscany and Lazio, Italy, admitted via the ED to Internal Medicine or Geriatrics units. The AIDEA study enrolled 4425 subjects aged 75+ years (5217 records) accessing two EDs in the area of Florence, Italy.InterventionsNone.Outcome measuresPrimary outcome: 1-year mortality. Secondary outcomes: 7 and 30-day mortality and 1-year recurrent ED visits.ResultsAdvancing age, male gender, previous hospital admission, discharge diagnosis, time from discharge and polypharmacy predicted 1-year mortality and contributed to the DSC in the development subsample of the SCNP cohort. Based on score quartiles, participants were classified into low, medium, high and very high-risk classes. In the SCNP validation sample, mortality increased progressively from 144 to 367 per 1000 person-years, across DSC classes, with HR (95% CI) of 1.92 (1.85 to 1.99), 2.71 (2.61 to 2.81) and 5.40 (5.21 to 5.59) in class II, III and IV, respectively versus class I (p<0.001). Findings were similar in AIDEA, where the DSC predicted also recurrent ED visits in 1 year. In both databases, the DSC predicted 7 and 30-day mortality.ConclusionsThe DSC, based on administrative data available in real time, predicts prognosis of older patients and might improve their management in the ED.

Real-time assessment of value-at-risk and volatility accuracy

2007 ◽  
Vol 8 (1) ◽  
pp. 323-336 ◽  
Author(s):  
Joe H. Sullivan ◽  
Zachary G. Stoumbos ◽  
Robert Brooks
Keyword(s):  
At Risk ◽  
Real Time ◽  
Value At Risk ◽  
Time Assessment

Design and Implementation of a High-Speed Real-Time Position Detection System in Electromagnetic Coil Launcher

2020 ◽  
Vol 48 (9) ◽  
pp. 3203-3210
Author(s):  
Guan Xiao Cun ◽  
Shuai Wang ◽  
Denghua Guo ◽  
Shaohua Guan ◽  
Baolong Liu ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
Detection System ◽  
Electromagnetic Coil ◽  
Design And Implementation ◽  
Position Detection ◽  
Time Position

Handheld Lighting Circuit Detector Based on Alternating Electric Field

2014 ◽  
Vol 519-520 ◽  
pp. 1129-1132
Author(s):  
Feng Juan Wang ◽  
Cheng Ying Gong ◽  
Hui He
Keyword(s):  
Electric Field ◽  
Real Time ◽  
Main Idea ◽  
Testing Time ◽  
Dark Line ◽  
Certification System ◽  
Position Detection ◽  
Alternating Electric Field ◽  
Comparison Circuit

To find the point of failure of dark line will tend to make electricians helpless, so the design of handheld lighting circuits detector is necessary. This article discribes the main idea of probes inducing the alternating electric field around electricity cables[1]. The collected signal in system is processed through the amplification, filtering, comparison circuit and STC12C5A08AD. Finally, real-time display grid numbers and testing time on 12864. The system’s functions include position detection, discrimination, position records and others. The system can well distinguish different cable. After testing and certification, system is reliable, stable and with practical value.

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