Results 81 to 90 of about 85,239 (405)
Modulation in Radio Telephony [PDF]
After considering the general characteristics of a voice-modulated radio frequency current, there is given a systematic classification of the various methods of producing such modulation in transmitters using three-electrode vacuum tubes. The output, efficiency, stability, completeness of modulation, quality, and other characteristics of each method of
openaire +3 more sources
Analyzing ENUM Service and Administration from the Bottom Up: The addressing system for IP telephony and beyond [PDF]
ENUM creates many new market opportunities and raises several important policy issues related to the implementation and administration of the ENUM database and services. Recent World Telecommunications Policy Forum 2001 dealt with the emergence of ENUM as an important numbering issue of IP telephony.
arxiv
Abstract World markets for quality differentiated agri‐food products are highly competitive, presenting significant challenges for firms aiming to compete effectively. Government agencies and business organizations often implement various export promotion policies to address these challenges.
Nicolás Depetris‐Chauvin+1 more
wiley +1 more source
Most of the discussion about Australia's National Broadband Network (NBN) has been about the costs, the benefits and the implementation of "super-fast broadband". This article looks at another important use that will be made of the optical fibre to the user provided by the NBN - the provision of telephony service as a continuation of the current ...
openaire +2 more sources
ABSTRACT The penetration of information and communication technologies (ICTs) in farming communities is increasing the use of smartphone‐based instant messaging apps. Despite this, the reasons behind participation and the impact on farm productivity in developing countries remain unexplored.
Zafar Kurbanov+4 more
wiley +1 more source
Clean Cut is a multimodal, adaptive, checklist‐based infection prevention programme designed to improve compliance with six critical perioperative infection prevention practices. After introducing the programme at five hospitals in Ethiopia, compliance with critical infection prevention standards significantly improved and the relative risk of ...
J. A. Forrester+16 more
wiley +1 more source
Kaplan–Meier analysis demonstrated that patients with splenomegaly had worse OS than those without splenomegaly. Abstract Background & aims Immune checkpoint inhibitors (ICIs) play an increasingly important role in the treatment of primary liver cancer (PLC). Some patients with PLC experience symptoms of splenomegaly.
Lu‐Shan Xiao+9 more
wiley +1 more source
The role of air traffic controllers is to direct and manage highly dynamic flights. Their work requires both efficiency and accuracy. Previous studies have shown that fatigue in air traffic controllers can impair their work ability and even threaten ...
Lin Xu+3 more
doaj +1 more source
PARTICULARTS REGARDING THE ACCOUNTING RECOGNITION OF REVENUE – THE CASE OF MOBILE OPERATORS [PDF]
For the current economy, the sector of telecommunications which includes mobile telephony is one of the most important worldwide. World leaders of this sector are among the companies present in Romania, in terms of income and as financial performance ...
Iuliana Oana Mihai, Riana Iren Radu
doaj
Gender and the Telephone: Voice and Emotions Shaping and Gendering Space [PDF]
In the field of communication studies, the topic of telephony and the gendering of space via voice and emotions has received limited attention. The focus of this article is how telephone conversations are mediated by voice and emotions, which in turn ...
Mona Livholts, Lia Bryant
doaj +1 more source