Results 21 to 30 of about 8,402,433 (327)

Space-Time Correlation for Three-Dimensional MIMO Channel Model Using Leaky Coaxial Cables in Rectangular Tunnel

open access: yesInternational Journal of Antennas and Propagation, 2020
The rapid development of high-speed train and Metro communications has provided new challenges for the application of MIMO technologies. Therefore, we propose a three-dimensional (3D) multiple-input multiple-output (MIMO) channel model using leaky ...
Kai Zhang, Fangqi Zhang, Guoxin Zheng
doaj   +1 more source

Distributed Processing of k Shortest Path Queries over Dynamic Road Networks [PDF]

open access: yesSIGMOD Conference, 2020
The problem of identifying the k -shortest paths (KSPs for short) in a dynamic road network is essential to many location-based services. Road networks are dynamic in the sense that the weights of the edges in the corresponding graph constantly change ...
Ziqiang Yu   +6 more
semanticscholar   +1 more source

Using Incomplete Information for Complete Weight Annotation of Road Networks -- Extended Version [PDF]

open access: yes, 2013
We are witnessing increasing interests in the effective use of road networks. For example, to enable effective vehicle routing, weighted-graph models of transportation networks are used, where the weight of an edge captures some cost associated with ...
Jensen, Christian S.   +2 more
core   +1 more source

1-RAAP: An Efficient 1-Round Anonymous Authentication Protocol for Wireless Body Area Networks

open access: yesSensors, 2016
Thanks to the rapid technological convergence of wireless communications, medical sensors and cloud computing, Wireless Body Area Networks (WBANs) have emerged as a novel networking paradigm enabling ubiquitous Internet services, allowing people to ...
Jingwei Liu, Lihuan Zhang, Rong Sun
doaj   +1 more source

MIMO Exploitation of 3D Multipath Statistics in a Heterogeneous LTE-Advanced Network

open access: yesInternational Journal of Antennas and Propagation, 2013
This paper analyses the impact of 3D multipath in an LTE-Advanced heterogeneous network. The impact of the base station array configuration is considered in both the azimuth and elevation planes.
Zuhanis Mansor   +4 more
doaj   +1 more source

SERS Taper-Fiber Nanoprobe Modified by Gold Nanoparticles Wrapped with Ultrathin Alumina Film by Atomic Layer Deposition

open access: yesSensors, 2017
A taper-fiber SERS nanoprobe modified by gold nanoparticles (Au-NPs) with ultrathin alumina layers was fabricated and its ability to perform remote Raman detection was demonstrated.
Wenjie Xu   +7 more
doaj   +1 more source

A Graph Deep Learning-Based Fast Traffic Flow Prediction Method in Urban Road Networks

open access: yesIEEE Access, 2023
In modern smart cities, road networks are becoming more and more complicated, resulting in more complex format of graphs. This brings many challenges to the forecasting of traffic flow in road graphs.
Dongfang Yang, Liping Lv
doaj   +1 more source

Congestion Propagation Based Bottleneck Identification in Urban Road Networks

open access: yesIEEE Transactions on Vehicular Technology, 2020
Due to the rapid development of vehicular transportation and urbanization, traffic congestion has been increasing and becomes a serious problem in almost all major cities worldwide. Many instances of traffic congestion can be traced to their root causes,
Changle Li   +3 more
semanticscholar   +1 more source

Traffic-Estimation-Based Low-Latency XGS-PON Mobile Front-Haul for Small-Cell C-RAN Based on an Adaptive Learning Neural Network

open access: yesApplied Sciences, 2018
In this paper, we propose a novel method for low-latency 10-Gigabit-capable symmetric passive optical network (XGS-PON) mobile front-haul for small cell cloud radio access network (C-RAN) based on traffic estimation. In this method, the number of packets
Ahmed Mohammed Mikaeil   +3 more
doaj   +1 more source

Application of a Risk Management System of Road Networks Exposed to Volcanic Hazards

open access: yesEngineering Proceedings, 2023
Risk Management Systems are a valuable tool for estimating the potential losses of natural events, assessing risk reduction strategies, and increasing the resilience of critical infrastructure.
Alondra Chamorro   +8 more
doaj   +1 more source

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