Results 31 to 40 of about 4,681,081 (294)

Long-Range Neutron Detection [PDF]

open access: yes, 1999
A neutron detector designed for detecting neutron sources at distances of 50 to 100 m has been constructed and tested. This detector has a large surface area (1 m{sup 2}) to enhance detection efficiency, and it contains a collimator and shielding to achieve direction sensitivity and reduce background.
Peurrung, Anthony J.   +4 more
openaire   +4 more sources

Distributed Detection in Sensor Networks with Limited Range Sensors

open access: yes, 2008
We consider a multi-object detection problem over a sensor network (SNET) with limited range sensors. This problem complements the widely considered decentralized detection problem where all sensors observe the same object. While the necessity for global
Ermis, Erhan B., Saligrama, Venkatesh
core   +1 more source

A NEW ADAPTED CANNY FILTER FOR EDGE DETECTION IN RANGE IMAGES

open access: yesJordanian Journal of Computers and Information Technology, 2021
Image segmentation remains as one of the most important tasks for image analysis and understanding. It deals with raw images in order to prepare them to be usable in automatic high-level processes, such as classification or information retrieval.
Mohamed Cheribet, Smaine Mazouzi
doaj   +1 more source

Detection Range of Intercept Sonar for CWFM Signals

open access: yesArchives of Acoustics, 2014
Stealth in military sonars applications may be ensured through the use of low power signals making them difficult to intercept by the enemy. In recent years, silent sonar design has been investigated by the Department of Marine Electronic Systems of the ...
Jacek MARSZAL, Roman SALAMON
doaj   +1 more source

Microstructured capacitive sensor with broad detection range and long-term stability for human activity detection

open access: yesnpj Flexible Electronics, 2021
In recent years, flexible stress sensors capable of monitoring diverse body movements and physiological signals have been attracting great attention in the fields of healthcare systems, human–machine interfaces, and wearable electronics.
Xin He   +11 more
doaj   +1 more source

Metasurface-enhanced light detection and ranging technology

open access: yesNature Communications, 2022
Abstract Deploying advanced imaging solutions to robotic and autonomous systems by mimicking human vision requires simultaneous acquisition of multiple fields of views, named the peripheral and fovea regions. Among 3D computer vision techniques, LiDAR is currently considered at the industrial level for robotic vision.
Juliano Martins, Renato   +14 more
openaire   +4 more sources

Real time pre-detection dynamic range compression [PDF]

open access: yes, 1992
A real time, pre-detection optical dynamic range compression system uses a photorefractive crystal, such as BaTiO3 or LiNbO3, in which light induced scattering from crystal inhomogeneities of the optical input occurs as a nonlinear function of the input ...
Liu, Hua-Kuang
core   +1 more source

Performance of Graphene Thermal Photon Detectors

open access: yes, 2012
We analyze the performance of graphene microstructures as thermal photon detectors and deduce the range of parameters that define a linear response. The saturation effects of a graphene thermal detector that operates beyond the linear range are described
Karasik, Boris S.   +2 more
core   +1 more source

Detection of leaf structures in close-range hyperspectral images using morphological fusion [PDF]

open access: yes, 2017
Close-range hyperspectral images are a promising source of information in plant biology, in particular, for in vivo study of physiological changes. In this study, we investigate how data fusion can improve the detection of leaf elements by combining ...
Criollo, Ronald   +4 more
core   +2 more sources

Potential Early Risk Biomarkers for Reduced Forced Expiratory Volume in Children Post‐Hematopoietic Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT We sought to identify potential early risk biomarkers for lung disease in children post‐allogeneic HCT. Patients with pulmonary function tests 3 months post‐transplant and plasma samples between days 7 and 14 post‐HCT were included. Six of 27 subjects enrolled had reduced forced expiratory volume 1 (FEV1) z scores.
Isabella S. Small   +3 more
wiley   +1 more source

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