Results 21 to 30 of about 172,939 (309)

Elastic networks of the future: benefits for the Colombian internal telecommunication network

TecnoLógicas, 2015
The continuous growth in data demand is leading research to bring to light an efficient network using fiber optics and radioelectric spectrum. The next generation of networks will be the result of a convergence between the optical and wireless domain ...
Andrés F. Betancur-Pérez, Jhon J. Granada-Torres, Neil Guerrero-González   +2 more
doaj   +1 more source

Molecular Templating Enables Precise CeNiC2/Ni Heterostructures for Efficient Alkaline Hydrogen Oxidation

Advanced Functional Materials, EarlyView.
A series of Bi‐TMCs‐based heterostructures (CeNiC2/Ni‐x%) have been precisely constructed through a “molecular‐template”‐assisted strategy, which exhibits remarkable alkaline HOR performance derived from the strong synergy between Ni and CeNiC2 components.
Xi Yin, Xue‐Qian Wu, Yi Yuan, Ya‐Pan Wu, Shuang Li, Guangtong Hai, Shuhui Sun, Dong‐Sheng Li   +7 more
wiley   +1 more source

The reengineering of public service: the universal service of telecommunications

Derecho PUCP, 2016
This paper tries to explain how the regulation of the telecommunications’ activity abandoned the traditional system of State’s public service and evolved to the establishment of a new legal framework that encourages competition among all the economic ...
Víctor Rafael Hernández-Mendible
doaj   +1 more source

Bioactive Conductive Ti3C2Tx‐Ce Hydrogel Facilitates Spinal Cord Injury Repair Through ROS Scavenging and Mitochondrial Regulation

Advanced Functional Materials, EarlyView.
Bioactive conductive Ti3C2Tx‐Ce hydrogels with with scavenging ROS and alleviating neuronal mitochondrial dysfunction are exploited for SCI treatment. This functionality is attributed to interfacial activation modification of Ti3C2Tx with Ce3+ ions to in‐situ form Ce(OH)x‐mediated protective layer, which is beneficial to enabling stable intracellular ...
Weikang Wang, Qing Liu, Ang Lv, Yabin Lin, Jiawei Chen, Ning Ding, Chunlei Zhang, Shuai Zhou, Bo Yuan, Weiwei Zhao, Liming Li, Luping Zhang, Fei Huang   +12 more
wiley   +1 more source

Forecasting Competence of Colombian Mobile Communication Network Providers Using Artificial Intelligence Models

IEEE Access
Cellular networks have become an important part of our society. Every day, we use our cell phones to work, study, or entertain, and users are looking for more bandwidth, lower prices, and quality of service.
Ernesto Cadena Munoz, Luis Fernando Pedraza, Cesar Augusto Hernandez   +2 more
doaj   +1 more source

China and Africa: Alternative Telecommunication Policies and Practices

The African Journal of Information and Communication, 2016
The Beijing Consensus is said to be a win-win for China and Africa. China has become a major force in global telecommunications markets, as a manufacturer, a content provider and in delivering services to its citizens.
Ewan Sutherland
doaj   +1 more source

Carbon Shell‐Encapsulated PtFe Catalysts in High Temperature Polymer Electrolyte Membrane Fuel Cells: Balancing Molecular Sieving and Diffusion for Enhanced Reactant Access

Advanced Functional Materials, EarlyView.
Scanning electrochemical microscopy reveals reactant diffusion through porous carbon shells to PtFe cores, while the carbon‐encapsulated PtFe enables high‐performance HT‐PEMFC operation by sieving phosphate ions that induce catalyst poisoning. ABSTRACT High‐temperature polymer electrolyte membrane fuel cells (HT‐PEMFCs) operating at 160°C on phosphoric
Myeong‐Geun Kim, Sourabh S. Chougule, Suji Lee, Young Sang Park, Jihyun Choi, Katie Heeyum Lim, Albert S. Lee, Hyun S. Park, Namgee Jung, Sung Jong Yoo   +9 more
wiley   +1 more source

Regulação de indústrias de rede: entre flexibilidade e estabilidade Regulation of network industries: between flexibility and stability

Brazilian Journal of Political Economy, 2007
This paper explores the problems of an unstable regulatory regime in network industries and addresses the tension between the necessary flexibility in the long-term regulatory commitment and the need for institutional stability.
Alexandre Ditzel Faraco, Diogo R. Coutinho   +1 more
doaj   +1 more source

On the electromagnetic shielding properties of carbon fiber materials

Electrical engineering & Electromechanics, 2022
Introduction. Due to the good electrical and thermal properties of carbon, carbon-based materials represent a major trend is various applications, including electromagnetic compatibility.
G. Rosu, V. Velicu, A. Boitan, G. Mihai, L. Tuta, O. Baltag   +5 more
doaj   +1 more source

Fabrication Technologies for Soft, Multimaterial Optical Fibers for In Vivo Diagnostics and Phototherapy, With a Focus on Extrusion Printing

Advanced Materials Technologies, EarlyView.
Soft multimaterial optical fibers integrate multiple functionalities—such as waveguiding, side emission, sensing, drug delivery or actuation—into a single filament for wearable, implantable, and tissue‐integrated devices for diagnostics and phototherapy.
Zahra Kafrashian, Jun Feng, Aránzazu del Campo   +2 more
wiley   +1 more source