Results 61 to 70 of about 109,418 (318)

Personal Mobile Server / Center for the Study of Mobile Devices and Communications [PDF]

open access: yes, 2012
A personal server is any small, light-weight, battery-powered mobile device with capability for data storage and some form of wireless connectivity means such as Bluetooth and 802.11.
Gurminder, Singh   +1 more
core  

Vision‐Augmented Wearable Interfaces: Bioinspired Approaches for Realistic AI‐Human‐Machine Interaction

open access: yesAdvanced Materials Technologies, EarlyView.
This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee   +4 more
wiley   +1 more source

Security-Reliability Tradeoff for Friendly Jammer Assisted User-Pair Selection in the Face of Multiple Eavesdroppers

open access: yesIEEE Access, 2016
In this paper, we explore the physical-layer security in a wireless network consisting of multiple user pairs in the face of multiple eavesdroppers, which are deployed by an adversary for tapping the confidential transmissions of the user pairs ...
Xiaojin Ding   +3 more
doaj   +1 more source

Impact of mobility in mobile communication systems [PDF]

open access: yes, 1996
A new method is developed for systematic tracking of the random movement of a mobile station in a cellular environment. It incorporates mobility parameters under most generalized conditions, so that the model could be tailored to be applicable in most cellular environments. This mobility model is used to characterise the cell residence time of both new
Mahmood M. Zonoozi, Palitha Dassanayake
openaire   +1 more source

Large Faraday Rotation in Liquid Crystals With Embedded Paramagnetic Ions (Cu2+, VO2+) at Room Temperature

open access: yesAdvanced Optical Materials, EarlyView.
Large Faraday rotation at room temperature is observed in thin films of discotic copper (Cu2+: 3d9) and vanadyl (VO2+: 3d1) enaminoketone complexes. The large Verdet constant originates from a high density of paramagnetic centers, metal‐ligand p−d hybridization and π orbitals involved in optical transitions (identified by DFT calculations), as well as ...
Karolina Łempicka‐Mirek   +8 more
wiley   +1 more source

Benefits of Beamforming Training Scheme in Distributed Large-Scale MIMO Systems

open access: yesIEEE Access, 2018
The downlink training yields rather modest performance gains due to the high degree of channel hardening effect in co-located large-scale multi-input multi-output (MIMO) systems. However, in distributed large-scale MIMO systems, the potential benefits of
Jiamin Li   +3 more
doaj   +1 more source

Mitigating Efficiency Roll‐Off in Phosphor‐Sensitized Fluorescence OLEDs via Molecular Polarity‐Based Benzofuropyridine Host Engineering

open access: yesAdvanced Optical Materials, EarlyView.
Positional isomerism in dibenzofuran‐based n‐type hosts modulates molecular polarity, charge‐transport balance, and emissive‐layer packing. The higher‐polarity BFPDB‐2 host facilitates efficient energy funneling, reduced aggregation, and preferential dipole orientation, leading to phosphor‐sensitized fluorescence OLEDs with enhanced external quantum ...
Nargis Ali   +3 more
wiley   +1 more source

Energy Efficient Joint Power Optimization for Full-Duplex Relaying

open access: yesIEEE Access, 2019
Full-duplex (FD) relaying is a promising technology for the next generation communication systems. In this paper, we aim to jointly optimize the source and relay transmit powers to maximize the energy efficiency (EE) for both amplify-and-forward (AF) and
Zhenyao He   +3 more
doaj   +1 more source

Mobilizing professional communities

open access: yesPublic Health Reports, 2001
John G. Bartlett, MDa Medical providers play an important role in planning for bioterrorism but have been reluctant participants in most of the planning. The purpose of this review is to summarize the role of practicing medical professionals for bioterrorism defense, identify the reasons for reluctance to participate in the planning process, and ...
openaire   +3 more sources

Communications report 2011–12 [PDF]

open access: yes, 2012
ACMA has released a suite of targeted reports that complement the Communications report 2011–12. These reports are to inform Australians, and more specifically ACMA stakeholders, about how convergence is transforming communications and media ...

core  

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