Results 41 to 50 of about 39,095 (303)

Business-oriented development of telecommunication services [PDF]

open access: yes, 1998
The development of software for distributed systems, e.g. telecommunication services, is a complex activity. Numerous issues have to be resolved when developing such systems, examples of which are language/system heterogeneity and remoteness of ...
SINNOTT, RICHARD   +3 more
core  

Virtual reality telecommunication system

open access: yes, 1999
We propose three reference models for virtual reality telecommunication system that are robotic, electronics and hybrid. The hybrid reference model is mainly discussed which is composed of three dimensional videophone with robotic ...
Bin Ramliy, M. N.   +9 more
core   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

Wholesale Competition in the International Telecommunications System [PDF]

open access: yesNetworks and Spatial Economics, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
CRICELLI L   +3 more
openaire   +7 more sources

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Coupling of Er3+ ions and Plasmonic Modes in Vertical Nanocavities for Spectral Broadening in Telecom Bands

open access: yesAdvanced Materials Technologies, EarlyView.
Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón   +5 more
wiley   +1 more source

Design of a Microprocessor Controlled Telecommunication System

open access: yes, 1976
Recent advancements in Large Scale Integration Technology have made available devices, such as microprocessors, analog gates and three state logic, that provide the designer with a wide range of possibilities in the design of telecommunication systems.
Maroutsos, George J.
core   +1 more source

Luminescence and Photochromism in Lanthanide‐Doped Hackmanites

open access: yesAdvanced Optical Materials, EarlyView.
Lanthanide‐doped lithium hackmanite derivatives are prepared utilizing a doped LiAlSiO4 precursor to modify luminescent and photochromic properties. Upon UV excitation, europium doping results in green Eu2+ persistent luminescence from shallow traps. Contrarily, samarium doping induces unusual near‐infrared photochromism.
Joshua Baggott   +7 more
wiley   +1 more source

A Battery Voltage Level Monitoring System for Telecommunication Towers [PDF]

open access: yes, 2021
This research article was published by Engineering, Technology & Applied Science Research, Vol. 11, No. 6, 2021Voltage fluctuations in batteries form a major challenge the telecommunication towers face.
Uwamahoro, Rahab   +2 more
core  

Aerosol Jet Printed Polymer‐Free High Aspect Ratio Quantum Dot Films for Enhanced Color Conversion

open access: yesAdvanced Optical Materials, EarlyView.
Polymer‐free quantum dot color conversion layers are aerosol jet printed at high aspect ratio by tuning the aerosol focus ratio to induce in‐flight droplet drying. Contact‐line pinning suppresses lateral spreading, enabling ∼10 µm‐thick films at ∼50 µm widths with blue light leakage below 0.25% and conversion efficiency approaching 18%, demonstrated ...
Sukyung Choi   +5 more
wiley   +1 more source

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