Results 11 to 20 of about 4,702,403 (151)
Mutualism promotes site selection in a large marine planktivore
Ecology and Evolution, 2021 Mutualism is a form of symbiosis whereby both parties benefit from the relationship. An example is cleaning symbiosis, which has been observed in terrestrial and marine environments.
Asia O. Armstrong +8 more
doaj +1 more source
Earth and Planetary Physics, 2023 A low-frequency magnetic lightning mapping system (LFM-LMS) was built during the SHAndong Triggered Lightning Experiment (SHATLE), based on continuous measurements of magnetic field radiation from lightning.
Xiao Li +5 more
doaj +1 more source
Enhanced Positioning Techniques for Hybrid Wireless Networks [PDF]
, 2011 The objective of this paper is to propose a reliable and accurate positioning method, which provides location estimates for the mobile user in hybrid wireless network (IEEE802.11/WiFi, IEEE802.16/WiMAX and LTE technologies).
Zvikhachevskaya, Anna +4 more
core +4 more sources
Energies, 2023 In order to solve the problem that the dual Mach Zehnder (M-Z) interferometer system is easily affected by external environmental noise, a data signal-processing scheme based on Hilbert–Huang transform (HHT) is proposed to achieve high-precision location
Zhiheng Liu +7 more
doaj +1 more source
Remote Sensing, 2022 The equivalent propagation method adopts a variable propagation velocity in lightning location, minimizing the location error caused by various factors in the long-range lightning location network. To verify the feasibility of this method, we establish a
Jie Li +10 more
doaj +1 more source
A High Performance Privacy-Oriented Location System [PDF]
, 2003 Many mobile applications can be greatly enhanced when provided with the locations of people and devices. Ultrasonic location systems have been shown to supply location information with centimeter accuracy at high update rates.
Ward, Andy, Hazas, Michael
core +3 more sources
Journal of Applied Science and Engineering, 2023 An attempt to further enhance the accuracy and reliability of M-iWMLR localization algorithm using a new weight matrix that was formulated with two-tier RSS data normalization is presented.
Colette E. Agbo +2 more
doaj +1 more source
High-precision robust broadband ultrasonic location and orientation estimation [PDF]
, 2009 This paper presents an indoor broadband ultrasonic system for estimation of a mobile device’s 3-D location and three-axis orientation using beacons. It presents the first implementation and characterization of a real frequency hopping spread spectrum ...
J. R. Gonzalez +3 more
core +2 more sources
TrackingStorm: Visualization Tool for a Storm Detector Network (SDN) in the LF Spectrum
Brazilian Archives of Biology and Technology, 2021 During the last year the Group of Atmospheric Electricity Phenomena (FEA/UFPR) developed a short range lightning location network based on a sensor device called Storm Detector Network (SDN), along with a set of algorithms that enables to track storms ...
Augusto Mathias Adams +6 more
doaj +1 more source
DuctiLoc: Energy-Efficient Location Sampling With Configurable Accuracy
IEEE Access, 2023 Mobile device tracking technologies based on various positioning systems have made location data collection ubiquitous. The frequency at which location samples are recorded varies across applications, yet it is usually pre-defined and fixed, resulting in
Panagiota Katsikouli +4 more
doaj +1 more source