Results 101 to 110 of about 246,659 (302)

VOICE REHABILITATION OF PATIENTS AFTER LARYNGECTOMY BY MEANS OF TRACHEOESOPHAGEAL SHUNTING AND VOICE PROSTHETICS

open access: yesНаука и инновации в медицине, 2018
Aim - to evaluate the effectiveness of voice rehabilitation with the use of voice prosthesis, and to review the existing methods of voice rehabilitation with their advantages and disadvantages in order to define the most effective one.
A Yu Chujkova   +2 more
doaj   +1 more source

Decoding High‐voltage LiCoO2: From Degradation to Stabilization Toward Durable Li‐ion Batteries

open access: yesAdvanced Materials, EarlyView.
This review systematically addresses the degradation mechanisms and stabilization strategies for high‐voltage LiCoO2 cathodes. Key enhancement approaches including foreign‐ion doping, surface modifications, structural design, and electrolyte optimization are critically assessed.
Zezhou Lin   +6 more
wiley   +1 more source

Reflection on Migration Scenarios 2G and 3G Mobile Networks to Fourth Generation in Colombia

open access: yesTecnoLógicas, 2013
In the development of the following article is an analysis of some of the migration scenarios third generation mobile technologies for fourth generation mobile technologies, in order to select which is the most suitable migration scenario for mobile ...
Sergio A. Sepúlveda-Leiva   +2 more
doaj  

Competition in a Pure World of Internet Telephony [PDF]

open access: yes
From the angle of competition policy, Voice over IP looks like a panacea. It not only brings better service, but it also increases competitive pressure on former telecommunications monopolists. This paper points to the largely overlooked downside.
Christoph Engel
core  

Ultrafast Photocatalytic Wettability Switching in Substrate‐Interface Tailored Titanium Dioxide Thin Films

open access: yesAdvanced Materials Interfaces, EarlyView.
This study demonstrates ultrafast photocatalytic wettability switching in TiO2 thin films by tailoring substrate doping and interface oxides. Enhanced switching rates and hemiwicking effects are achieved through optimized material stacks and nanostructuring.
Rucha A. Deshpande   +6 more
wiley   +1 more source

Network Coding Over SATCOM: Lessons Learned

open access: yes, 2015
Satellite networks provide unique challenges that can restrict users' quality of service. For example, high packet erasure rates and large latencies can cause significant disruptions to applications such as video streaming or voice-over-IP.
N Thomos, S Teerapittayanon, T Ho
core   +1 more source

Advances in Halide Perovskites for Photon Radiation Detectors

open access: yesAdvanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang   +3 more
wiley   +1 more source

With a little coping from my friends: a case study of voice, manager response and collective coping in an organisational context

open access: yesNordic Psychology
Although research has established the importance of employee voice on job performance, turnover, and job satisfaction, little is known about the impact of voice, particularly group voice, on collective coping.
Tanja Kirkegaard, Christian WaldstrØm
doaj   +1 more source

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

open access: yesAdvanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini   +3 more
wiley   +1 more source

Rqa based approach to detect and prevent ddos attacks in voip networks

open access: yesCybernetics and Information Technologies, 2014
Voice over Internet Protocol (VoIP) is a family of technologies for the transmission of voice over Internet. Voice is converted into digital signals and transmitted as data packets.
Jeyanthi N.   +2 more
doaj   +1 more source

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