نتایج جستجو برای: mobile telephone
تعداد نتایج: 218056 فیلتر نتایج به سال:
This research paper evaluates the development relationship between the adoption rate of Information and Communications Technologies (the Internet, mobile phone, pager, personal computer, and telephone) and per capita income gap between the urban and rural areas in China, mainly between 1985 and 2006. The Pearson’s correlation coefficients suggest there has been a strong correlation in the devel...
The objective of this work is to evaluate the Quality of Service (QoS) of a Universal Mobile Telecommunication System (UMTS) cell. Among UMTS characteristics, we focus the attention on two aspects strictly related with the identified QoS measures: the random-access procedure and the admission control strategy. Using a model-based approach, we model and evaluate a UMTS cell under several service...
The goal of the present study is to introduce a speaking interface of mobile devices for speech impaired people. The latest devices (including PDAs with integrated telephone, Smartphones, Tablet PCs) possess numerous favorable features: small size, portability, considerably fast processor speed, increased storage size, telephony, large display and convenient development environment. Standardize...
Driver distraction is recognized as being one of the central causes of road traffic incidents and mobile telephones are tangible devices (among many other electronic devices) that can distract the driver through changes in workload. Forty participants completed a motorway route characterized by a low level of road complexity in the form of vehicle handling and information processing. A peripher...
Big Data on electronic records of social interactions allow approaching human behaviour and sociality from a quantitative point of view with unforeseen statistical power. Mobile telephone Call Detail Records (CDRs), automatically collected by telecom operators for billing purposes, have proven especially fruitful for understanding one-to-one communication patterns as well as the dynamics of soc...
CONTEXT The expansion and adoption of new methods of communication provide new opportunities for delivering health behavior change interventions. This paper reviews the current research examining mobile telephone short-message service (SMS) for delivering health behavior change interventions via text messages. This service has wide population reach, can be individually tailored, and allows inst...
In the transmission of digital data at a relatively high rate over a particular band limited channel, it is normally necessary to employ an equalizer at the receiver in order to correct the signal distortion introduced by the channel .ISI (inter symbol interference) leads to large error probability if it is not suppressed .The possible solutions for coping with ISI such as equalization techniqu...
This paper presents the methodology, results and effectiveness in the development of Mobile telephonebased (Short Message Service-based) distance learning. The proposed novel real time interactive distance learning approach is about the application of information technology to education, was setup, delivered and evaluated using a real-life environment. Statistical analysis of the achieved resul...
Sector developments The telecommunications service industry is growing very rapidly, wiith average annual growth rates of 10% during the last five years. These growth rates should continue for the next five years. This increase of activity is a result of the interaction of technological improvements (microelectronics , optical fibres) and institutional changes (liberalisation). Technological ad...
We empirically estimate the substitutability of fixed and mobile services for telecommunications access using a large, U.S. household survey conducted over the period 1999-2001. We take advantage of telephone price subsidy programs for low-income households to identify large, exogenous changes in fixed service prices to find substantial demand substitutability between fixed and mobile subscript...
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