Results 21 to 30 of about 44,119 (352)

Radiofrequency electromagnetic radiation from Wi-fi and its effects on human health, in particular children and adolescents. Review

open access: yesRoczniki Panstwowego Zakladu Higieny, 2020
Radiofrequency electromagnetic radiation emitted from Wi-Fi devices is nonionizing radiation. The frequencies used in wireless technology are similar to those applied in mobile telephony. Due to the much lower output power of devices using Wi-Fi compared
Andrzej Magiera, Jolanta Solecka
doaj   +1 more source

10.5937/tehnika1703383L= Development of methods for traffic simulation of telecommunication processes in IRITEL over 45 years [PDF]

open access: yesTehnika, 2017
This paper summarizes the programs intended for simulation of traffic processes in different telecommunications systems. These programs are developed, implemented and verified by the members of the Institute IRITEL through numerous scientific papers and ...
Lebl Aleksandar V.   +12 more
doaj   +1 more source

Des opérateurs de téléphonie mobile aux opérateurs financiers : usage du mobile money au Congo-Brazzaville

open access: yesRevue Française des Sciences de l’Information et de la Communication, 2020
Mobile money, an electronic wallet via the mobile phone in Africa and Congo has enabled financial exchanges between the rural population and the townspeople. Flexibility and ease of access have favored its integration into all social strata. This service
Privat Tiburce Massanga, Theodora Miere
doaj   +1 more source

Mobile telephony and its effects on human health

open access: yesRoczniki Panstwowego Zakladu Higieny, 2019
In recent years, there has been a rapid increase in the number of electromagnetic radiation sources such as mobile phones and base stations of mobile telephony.
Andrzej Magiera, Jolanta Solecka
doaj   +1 more source

Privacy through Pseudonymity in Mobile Telephony Systems [PDF]

open access: yes, 2014
—To protect mobile phone from tracking by third parties, mobile telephony systems rely on periodically changing pseudonyms. We experimentally and formally analyse the mechanism adopted to update these pseudonyms and point out design and implementation ...
Arapinis, Myrto   +3 more
core   +2 more sources

Voice and Video Telephony Services in Smartphone

open access: yesEURASIP Journal on Wireless Communications and Networking, 2006
Multimedia telephony is a delay-sensitive application. Packet losses, relatively less critical than delay, are allowed up to a certain threshold. They represent the QoS constraints that have to be respected to guarantee the operation of the telephony ...
Loscri' Valeria   +2 more
doaj   +2 more sources

The Informal Call: Telemonederos and Media Transitions in 1990s Bogotá

open access: yesTijdschrift voor Mediageschiedenis, 2023
This article re-examines the historiography of telephony in Bogotá, Colombia, focusing on the semi-public phones known as telemonederos. It challenges the conventional mono-medial and mono-usage narratives of telephony by highlighting the diverse and ...
Fabian M Prieto-Nanez
doaj   +1 more source

Estimating network effects in mobile telephony in Germany [PDF]

open access: yes, 2007
In this paper we analyze the demand for mobile telecommunication services in Germany in the period from January 1998 to June 2003. During this time, the subscriber base grew exponentially by about 700% while prices declined only moderately by about 41 ...
Doganoglu, Toker   +2 more
core   +1 more source

Testing a Personalized Approach to Chronic Low Back Pain: A Randomized Controlled Trial in Older Veterans

open access: yesArthritis Care &Research, EarlyView.
Objective We aimed to test the efficacy of personalized treatment of older veterans with chronic low back pain (CLBP) delivered by Aging Back Clinics (ABCs) as compared with usual care (UC). Methods Two hundred ninety‐nine veterans aged 65 to 89 with CLBP from three Veterans Affairs (VA) medical centers underwent baseline testing, randomization to ABC ...
Debra K. Weiner   +9 more
wiley   +1 more source

Poređenje karakteristika i mogućnosti budućeg servisa u mikrotalasnom području i mobilnih sistema treće generacije / The comparison of characteristics and opportunities of future service in microwave band and mobile systems third generation

open access: yesVojnotehnički Glasnik, 2006
Značaj i izuzetno brz razvoj telekomunikacija nameće neprekidno izučavanje i primenu novih servisa i novih postupaka integracije i komutacije u njemu.
Milan Lazarević, Jovan Bajčetić
doaj   +1 more source

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