Results 21 to 30 of about 39,155 (242)

Discovering Human Presence Activities with Smartphones Using Nonintrusive Wi-Fi Sniffer Sensors: The Big Data Prospective

open access: yesInternational Journal of Distributed Sensor Networks, 2013
With the explosive growth and wide-spread use of smartphones with Wi-Fi enabled, people are used to accessing the internet through Wi-Fi network interfaces of smartphones.
Weijun Qin   +3 more
doaj   +1 more source

Full-Duplex Assisted LTE-U/Wifi Coexisting Networks in Unlicensed Spectrum

open access: yesIEEE Access, 2018
With the boosting of mobile services, licensed spectrum for wireless networks becomes more and more crowded. To explore new spectrum for cellular users, more and more mobile operators are interested in deploying the long-term evolution in unlicensed ...
Zhuohui Yao, Wenchi Cheng, Hailin Zhang
doaj   +1 more source

Pemanfaatan Wifi Repeater sebagai Solusi Peningkatan Sinyal Wifi bagi Mahasiswa di Lingkungan Kostsehati Kayuwalang dengan Metode Drive Test

open access: yesJurnal Informatika dan Rekayasa Perangkat Lunak
Wi-Fi has become the most popular Internet connection among the general public due to its wireless accessibility. However, the limited signal range of Wi-Fi poses challenges.
Ferdi Ferdiansyah Ferdiansyah   +2 more
doaj   +1 more source

Problematic Internet Use in Frontotemporal Dementia: A Case Series

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The present study investigated problematic internet use (PIU) among 61 patients with frontotemporal dementia (FTD) compared to a cohort of 354 patients with mild cognitive impairment (MCI) and Alzheimer's dementia. PIU was identified in 22.9% of FTD patients compared to only 0.8% of AD patients (p < 0.001). Behaviors included compulsive social
Daniele Urso   +9 more
wiley   +1 more source

An Indoor Continuous Positioning Algorithm on the Move by Fusing Sensors and Wi-Fi on Smartphones

open access: yesSensors, 2015
Wi-Fi indoor positioning algorithms experience large positioning error and low stability when continuously positioning terminals that are on the move. This paper proposes a novel indoor continuous positioning algorithm that is on the move, fusing sensors
Huaiyu Li   +7 more
doaj   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

open access: yesAdvanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen   +7 more
wiley   +1 more source

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

open access: yesSensors, 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   +2 more
doaj   +1 more source

A Wireless, Passive Multimodal Wearable Sensor With Decoupled Sensing Capabilities

open access: yesAdvanced Materials, EarlyView.
A wireless passive multimodal electronic skin is presented for the simultaneous perception of pressure, humidity, and odor through a frequency‐divided LC resonator array. The decoupled sensing architecture suppresses cross‐interference and enables independent signal readout under superimposed stimuli while maintaining high stability.
Wenjiang Han   +8 more
wiley   +1 more source

Lightweight Wi-Fi Frame Detection for Licensed Assisted Access LTE

open access: yesIEEE Access, 2019
Licensed assisted access LTE (LAA-LTE) aggregates 5 GHz unlicensed bands with LTE's licensed bands via carrier aggregation, and adopts energy detection (ED)-based clear channel assessment (CCA) for protection of coexisting Wi-Fi devices.
Sung-Tae Hong   +3 more
doaj   +1 more source

Wi‐Fi sensing: applications and challenges [PDF]

open access: yesThe Journal of Engineering, 2020
Wi‐Fi technology has strong potentials in indoor and outdoor sensing applications; it has several important features which makes it an appealing option compared to other sensing technologies. This study presents a survey on different applications of Wi‐Fi‐based sensing systems such as elderly people monitoring, activity classification, gesture ...
Khalili, A   +3 more
openaire   +4 more sources

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