Results 21 to 30 of about 7,634,909 (286)

Reliability-Based Analysis of Sight Distance Modelling for Traffic Safety

open access: yesJournal of Advanced Transportation, 2017
Sight distance is of the utmost importance for traffic safety. The consideration of three-dimensional (3D) available sight distance (ASD) in geometric design has been supported by several researchers.
César de Santos-Berbel   +3 more
doaj   +1 more source

Target Localization via Integrated and Segregated Ranging Based on RSS and TOA Measurements

open access: yesSensors, 2019
This work addresses the problem of target localization in adverse non-line-of-sight (NLOS) environments by using received signal strength (RSS) and time of arrival (TOA) measurements.
Slavisa Tomic, Marko Beko
doaj   +1 more source

Possibilities of Using Bluetooth Low Energy Beacon Technology to Locate Objects Internally: A Case Study

open access: yesTechnologies, 2023
The developments that are occurring in relation to Industry 4.0 are making it possible to automate a huge number of production activities. Automation includes the possibility of automatically identifying individual elements of a system.
Jan Ližbetin, Jan Pečman
doaj   +1 more source

Exploiting Orientation Information to Improve Range-Based Localization Accuracy

open access: yesIEEE Access, 2020
This work addresses target localization problem in precarious surroundings where possibly no links are line of sight. It exploits the known architecture of available reference points to act as an irregular antenna array in order to estimate the azimuth ...
Slavisa Tomic, Marko Beko, Milan Tuba
doaj   +1 more source

An Empirical Path-Loss Model for Wireless Channels in Indoor Short-Range Office Environment

open access: yesInternational Journal of Antennas and Propagation, 2012
A novel empirical path-loss model for wireless indoor short-range office environment at 4.3–7.3 GHz band is presented. The model is developed based on the experimental datum sampled in 30 office rooms in both line of sight (LOS) and non-LOS (NLOS ...
Ye Wang, Wen-jun Lu, Hong-bo Zhu
doaj   +1 more source

Influence of highway three‐dimensional coordination on drivers’ perception of horizontal curvature and available sight distance

open access: yesIET Intelligent Transport Systems, 2013
Drivers' road perception is an important human factor of comfort and safety on driving. Available sight distance of crest vertical curves superimposed on horizontal curves can be geometrically optimised by applying 3D coordination criteria. However, drivers might not perceive available sight distance improvements.
Ana Tsui Moreno   +3 more
openaire   +1 more source

Impact of visibility on traffic Incidents at signalized intersections –a case study in Polish cities

open access: yesArchives of Transport
In urban agglomerations, signalized intersections are common. However, in traffic management, safety-focused strategies are often sacrificed for traffic efficiency by allowing simultaneous multiple conflicting movements.
Damian Iwanowicz, Radosław Klusek
doaj   +1 more source

Influence of Roadside Safety Barriers on Available Sight Distance

open access: yesTransportation Research Procedia
Roadside safety barriers are designed to prevent, control or mitigate traffic accidents by preventing vehicles from veering off the carriageway. This study focuses on metal roadside safety barriers whose spatial positioning can obstruct the driver’s field of view on right-hand horizontal curves, reducing the Available Sight Distance (ASD).
Stančerić, Ivica   +3 more
openaire   +1 more source

Measurements and Analysis of Large-Scale Path Loss Model at 14 and 22 GHz in Indoor Corridor

open access: yesIEEE Access, 2018
Fifth generation wireless communications will exploit the enormous chunk of bandwidth available at millimeter-wave frequency bands. Accordingly, an accurate and simple path loss model is critical for indoor environments, where deployment is likely to ...
Nicholas O. Oyie, Thomas J. O. Afullo
doaj   +1 more source

Structure‐Property Relationships in Catecholamine Coatings for Broad Surface Functionalization

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by mussel adhesive proteins (MAPs), six catecholamine molecules with different molecular structure were systematically characterized and compared based on their ability to form homogeneous, reactive coatings. Highlighting candidates capable of balancing coating properties of interest, their successful use as primer layers for organic and ...
Caroline F. Harms   +5 more
wiley   +1 more source

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