Results 91 to 100 of about 26,844 (306)
Indoor positioning system for wireless sensor networks based on two-stage fuzzy inference
International Journal of Distributed Sensor Networks, 2018 Wireless indoor positioning systems are susceptible to environmental distortion and attenuation of the signal, which can affect positioning accuracy. In this article, we present a two-stage indoor positioning scheme using a fuzzy-based algorithm aimed at
Chia-Hsin Cheng, Yi Yan
doaj +1 more source
Hierarchically Soft Porous MOF‐Polymer Monolith for Fast and Large‐Scale Moisture Buffering
Advanced Science, EarlyView.A soft, hierarchical porous monolith that combines metal–organic frameworks (MOFs) with a thermoresponsive polymer matrix enables rapid, large‐scale moisture buffering. The synergistic interface facilitates high‐capacity water capture and low‐energy release for sustainable indoor dehumidification.
Guangxin Ma +9 more
wiley +1 more source
Cognitive indoor positioning in TV white spaces
, 2013 Recent evolution in regulation of access to TV channels allocated in UHF frequencies (DVB-T) makes vacant channels (TV White Spaces - TVWS) available to wireless data services.
Luca De Nardis +6 more
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Advanced Science, EarlyView.A rotational energy harvesting device that successfully reconciles high power density with mechanical durability through a hybrid sliding‐and‐bouncing kinematic mechanism is reported. The success reported in our paper includes addressing a dilemma where enhanced electrical output comes at the cost of increased friction and wear, limiting the practical ...
Yihong Lin +12 more
wiley +1 more source
, 2020 Despite the extensive use of positioning and navigation in outdoor space, indoor positioning and navigation systems, essential for intelligent building and smart city services, are unsatisfactory in either performance or price, sometimes in both.
Lu, W. +4 more
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Advanced Science, EarlyView.Herein, we propose a solar‐powered heavy metal trap (SPHT) for sludge disposal. The indoor experiments demonstrated that the sludge water content decreased from 90 % to 31 %, coupled with a decrease in heavy metal content to 6 % at most. Furthermore, the designed SPHT generated an initial potential of 0.10 V, and monitoring this hydrovoltaic potential ...
Yanlin Li +7 more
wiley +1 more source
Wi-Fi positioning: System considerations and device calibration
, 2022 7 S.Due to an increasing number of public and private access points in indoor and urban environments, Wi-Fi positioning becomes more and more attractive for pedestrian navigation.
Kiefer, F. +4 more
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Advanced Science, EarlyView.ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li +12 more
wiley +1 more source
Robot indoor location modeling and simulation based on Kalman filtering
EURASIP Journal on Wireless Communications and Networking, 2019 Wireless signal fingerprint positioning technology has been widely used in indoor positioning. In view of the influence of a large number of interference noise in indoor, the error of receive signal strength indicator is large, the more complex and ...
Jian Yin Lu, Xinjie Li
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Subway Station Real-time Indoor Positioning System for Cell Phones [PDF]
, 2017 As wireless local area network, WLAN, access point (AP) are becoming very common wireless communication infrastructures in indoor environments, Wi-Fi signal based Indoor Positioning Systems (IPS) have been widely developed in recent years and one of the ...
Chenyang Wan +9 more
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