Results 81 to 90 of about 61,720 (247)

Genuine and sustained POM mastery from linear POM to POM system symphonies

open access: yesProduction and Operations Management, Volume 31, Issue 12, Page 4628-4642, December 2022., 2022
Abstract A dramatically changing business landscape characterized by volatility and uncertainty (which in turn are driven by unpredictable alterations of conditions by such factors as geopolitical events, climate changes, disasters—natural and human causes, reduction in food, potable water, and critical materials supply along with environmental ...
Peter W. Robertson, Martin K. Starr
wiley   +1 more source

Bit Error Rate Performance Analysis on Modulation Techniques of Wideband Code Division Multiple Access [PDF]

open access: yesJournal of Telecommunications,Volume 1, Issue 2, pp22-29, March 2010, 2010
In the beginning of 21st century there has been a dramatic shift in the market dynamics of telecommunication services. The transmission from base station to mobile or downlink transmission using M-ary Quadrature Amplitude modulation (QAM) and Quadrature phase shift keying (QPSK) modulation schemes are considered in Wideband-Code Division Multiple ...
arxiv  

Telecommunications Network Planning and Maintenance [PDF]

open access: yes, 2008
Telecommunications network operators are on a constant challenge to provide new services which require ubiquitous broadband access. In an attempt to do so, they are faced with many problems such as the network coverage or providing the guaranteed Quality
Alarcón Mondéjar, Martín Javier   +3 more
core   +1 more source

Blue‐to‐Green Fine‐Tunable Narrowband Delayed Fluorescence in Peripherally Dendritic Modified Bis‐Indolocarbazoles

open access: yesAngewandte Chemie International Edition, Accepted Article.
Highly efficient narrowband organic luminophores offer immense potentials for organic light‐emitting diodes (OLEDs) with high color purity of electroluminescence (EL). Appropriately controlling their structural relaxation and vibronic couplings between the excited and ground states enables the desired narrowband emissions.
Jun Hyeon Lee   +3 more
wiley   +1 more source

TINA as a virtual market place for telecommunication and information services: the VITAL experiment

open access: yes, 1999
The VITAL (Validation of Integrated Telecommunication Architectures for the Long-Term) project has defined, implemented and demonstrated an open distributed telecommunication architecture (ODTA) for deploying, managing and using a set of heterogeneous ...
Canal, Gianni   +4 more
core   +1 more source

Red‐to‐Near‐Infrared Electroluminescence and Low‐Threshold Amplified Spontaneous Emission from Solution‐Processable Fluorescent Diketopyrrolopyrrole Derivatives

open access: yesChemPhotoChem, EarlyView.
The photophysical, electroluminescence, and amplified spontaneous emission properties of two solution‐processable fluorescent diketopyrrolopyrrole derivatives are examined in details. The results demonstrate that this type of organic near‐infrared light‐emitting materials are extremely promising for organic light‐emitting diodes and organic ...
Anthony D’ Aléo   +10 more
wiley   +1 more source

Concentrated Ground Plane Booster Antenna Technology for Multiband Operation in Handset Devices [PDF]

open access: yes, 2014
The current demand in the handset antenna field requires multiband antennas due to the existence of multiple communication standards and the emergence of new ones.
Andujar, A.   +4 more
core   +2 more sources

A Type‐3 Fuzzy‐Based Model Predictive Control Approach for Management of Constant Energy

open access: yesEnergy Science &Engineering, EarlyView.
Application of the type‐3 fuzzy logic system (T3‐FLS) for management of constant energy and a comparison with the type‐2 fuzzy logic system. ABSTRACT Despite direct current (DC) microgrids' benefits over alternating current microgrids, these systems confront several difficulties.
Man‐Wen Tian   +7 more
wiley   +1 more source

Stochastic user behaviour modelling and network simulation for resource management in cooperation with mobile telecommunications and broadcast networks [PDF]

open access: yes, 2006
The latest generations of telecommunications networks have been designed to deliver higher data rates than widely used second generation telecommunications networks, providing flexible communication capabilities that can deliver high quality video images.
Centonza, A   +5 more
core   +1 more source

Metallic nanoparticle inks for flexible printed electronics

open access: yesFlexMat, EarlyView.
Abstract Flexible printed electronics represent a cutting‐edge technology leveraging functional inks to fabricate electronic circuits and components on diverse flexible substrates. Various advanced printing processes enable the production of computer‐controlled patterns with superior resolution and flexibility.
Ruimin Cai   +9 more
wiley   +1 more source

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