Results 81 to 90 of about 4,923 (203)

A Wi-Fi-Based Passive Indoor Positioning System via Entropy-Enhanced Deployment of Wi-Fi Sniffers

Sensors, 2023
This study presents a Wi-Fi-based passive indoor positioning system (IPS) that does not require active collaboration from the user or additional interfaces on the device-under-test (DUT).
Poh Yuen Chan, Ju-Chin Chao, Ruey-Beei Wu   +2 more
doaj   +1 more source

A realistic evaluation of indoor positioning systems based on Wi-Fi fingerprinting: The 2015 EvAAL–ETRI competition [PDF]

, 2017
Pre-print versionThis paper presents results from comparing different Wi-Fi fingerprinting algorithms on the same private dataset. The algorithms where realized by independent teams in the frame of the off-site track of the EvAAL-ETRI Indoor Localization
Barsocchi, Calderoni, Campos, Chen, Cover, del Corte-Valiente, de M. Neves, Friis, García, Gezici, Hashemi, Jimenez Ruiz, Kavehrad, Kuo, Lan, Laoudias, Li, Montaser, Paredes, Torres-Sospedra, Torres-Sospedra, Tumer, Tumer, Van Haute, Yim, Zhou, Álvarez-García   +26 more
core   +2 more sources

Three‐Step Synthesis Toward Fluorene‐Based Non‐Fused‐Ring Acceptors for Organic Solar Cells

Chemistry – A European Journal, EarlyView.
Applying a simple three step synthesis strategy leads to two fluorene‐based non‐fused‐ring electron acceptors, FHM‐Cl and FHM‐F for organic solar cells. The chlorinated variant delivers markedly higher efficiency due to broader light harvesting and favorable molecular packing, resulting in improved charge transport and reduced recombination losses ...
Virginia Lafranconi, Suman Mallick, Lisa Nauta, Lisa Inzko, Julia Hönigsberger, Danijel Babic, Bettina Schlemmer, Daniele Padula, Heinz Amenitsch, Thomas Rath, Gregor Trimmel   +10 more
wiley   +1 more source

Design of improved IR protocol for LED indoor positioning system [PDF]

, 2017
In this work, we design an infrared protocol (IRP) for light emitting diode (LED) based indoor positioning. The designed IRP compensates for the shortcomings of other existing protocols when applied to the multiple LED estimation indoor positioning model
Popoola, Olaoluwa R., Popoola, Wasiu O., Ramirez-Iniguez, Roberto, Sinanovic, Sinan   +3 more
core   +2 more sources

Greater future range expansions in alien than native ant species

Oikos, EarlyView.
There is growing concern that many species may not be able to track suitable conditions under climate change and suffer range contractions as a result. At the same time, alien species introduced to novel geographic ranges are often assumed to benefit from climate change.
Tongyi Liu, Sébastien Ollier, Cleo Bertelsmeier   +2 more
wiley   +1 more source

A new method to identify and explain sources of precipitation modification, illustrated for the western Netherlands

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study develops a method to identify the source areas of precipitation events, as illustrated for the western part of the Netherlands. Radar‐based precipitation data are traced back to their source areas and machine‐learning techniques are used to identify hypothesized causes: urban heat, surface roughness, and air pollution. We find that urban and
Jelmer van der Graaff, Gert‐Jan Steeneveld   +1 more
wiley   +1 more source

Integrated LEO Constellation and In‐Cabin Distribution System for Continuous Aircraft 5G Connectivity

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada, Victor Monzon Baeza, Carlos Horcajo Fernández de Gamboa, Rocío Serrano Camacho, Carlos Monzo   +4 more
wiley   +1 more source

RSS-Fingerprint Dimensionality Reduction for Multiple Service Set Identifier-Based Indoor Positioning Systems

Applied Sciences, 2019
Indoor positioning systems (IPS) have been recently adopted by many researchers for their broad applications in various Internet of Things (IoT) fields such as logistics, health, construction industries, and security. Received Signal Strength (RSS)-based
Ahmed Abed, Ikhlas Abdel-Qader
doaj   +1 more source

Accuracy Evaluation of Stereo Vision Aided Inertial Navigation for Indoor Environments [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Accurate knowledge of position and orientation is a prerequisite for many applications regarding unmanned navigation, mapping, or environmental modelling. GPS-aided inertial navigation is the preferred solution for outdoor applications.
D. G. Griessbach, D. B. Baumbach, A. B. Boerner, S. Z. Zuev   +3 more
doaj   +1 more source

Trading Strategies on Local Electricity Markets Using Agent‐Based Modelling and Reinforcement Learning: Vectors to Expand Energy Communities

Systems Research and Behavioral Science, EarlyView.
ABSTRACT Energy communities (ECs) members have a high degree of heterogeneity. Agent‐based modelling (ABM) allows for the modelling of each entity as an agent with distinct characteristics and decision rules. This is particularly useful when the heterogeneity of agents affects outcomes.
Adela Bâra, Simona‐Vasilica Oprea
wiley   +1 more source