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W artykule przedstawiono jeden z nowych standardów komunikacji – Rich Communication System, wdrażany przez Google. Opisana została krótka historia rozwiązania, funkcjonalność, możliwe zastosowania, przedstawiono protokół wykorzystywany do obsługi RCS oraz bezpieczeństwo komunikacji. Artykuł prezentuje również opinie polskich internautów oraz stanowisko operatorów sieci komórkowych.
Morphofunctional disorders in unicellular aquatic protozoa – Spirostomum ambiguum infusorians after 30-, 60-, and 360-min exposure in electromagnetic field at a radiation frequency of 1 GHz and energy flow density of 50 μW/cm2 were analyzed by intravital computer morphometry. Significant disorders in morphometric values correlated with low mobility of the protozoa. The results suggested the use of...
W referacie omawiane jest zagadnienie trudności adaptacji technologi ICT w komunikacji mobilnej. Omówione zostało radiowe środowisko propagacyjne wraz z możliwością adaptacji nowych technologii. Dotyczy to w głównej mierze zaawansowanej technologii MIMO w zakresie systemów MISO oraz MIMO 2x2 i 3x3. Przytacza się wyniki badań symulacyjnych przeprowadzonych dla zaników Raileigh’a oraz szybkich typu...
The popularity of web based social networks is rapidly increasing nowadays. These solutions allow managing relationships online. There are also several mobile solutions to these networks but they are mainly limited to reaching the services of the social network from the mobile device. The fact, that the phonebook of the mobile phones also represents social relationships, can be used for detecting...
In the last years several mobile learning courses have been experimented. The increasing popularity and additional features of mobile devices is one of the key reasons for that development. Some of the courses are adaptations and others are fully developed for mobile devices. The superior portability and accessibility of those equipments makes them suitable for interactive learning courses. This paper...
The paper explains the effectiveness of flexible learning methodology in engineering courses. This is an attempt to explore the traditional educational methods and to discuss the implications of flexible learning tools in engineering courses. It takes into account the latest application of Web 2.0 and other relevant techniques as well as components of delivery and material and resources needed. The...
The presence of new technologies on distance education generates a cloud of learning environments with high presence of multimedia contents and mobility capabilities. The widespread use of mobile technologies, digital TV and Internet enables ubiquitous learning environments that allow students to learn anywhere anytime. However, the diversity of computational and display capabilities of the current...
With the development of industrialization and informatization, modern society is highly dependent on energy. Electric power system is fundamental for social production and daily life. Especially in urban areas, electric power network has been a key infrastructure of the lifeline, and its failure will probably paralyze the whole city. On the other hand, as population growth and urbanization, the demand...
Because of user mobility, highly dynamic, error-prone wireless channels, the QoS control for mobile Peer-to-Peer (MP2P) streaming media has to face considerable challenges. Given to the advantages of policy management, we develop a policy-based QoS control (PBQC) architecture to provide QoS assurance dynamically and automatically in mobile network environment. And we also propose a MP2P streaming...
Asymmetric stereoscopic coding can save bitrate and maintain the overall visual quality of stereoscopic perception, so it is an alternative for wireless environment in which the bandwidth is limited. In asymmetric stereoscopic coding, the right-view images are down-sampled to half resolution before coding, while the direction of sampling influences the rate-distortion performance of the asymmetric...
In the mobile communications market, the homogeneity phenomenon of product's service appears. The paper combines the Technology Acceptance Model (TAM) and Switching Cost Theory to construct the Convert Selection Model about the mobile communication services for users, which mainly analyzed from five dimensions: perceived switching costs, differences in perceived usefulness, differences in perceived...
Bass model have been used widely for diffusion curve of a new product in some countries of the world, but only a few studies have explored in the parameters' estimation of bass model. In this paper, Bass model is adopted to fit the diffusion curve of mobile subscribers of China with different parameter-estimation techniques respectively, such as NLS(Non-Linear Least Squares ) ,OLS(Ordinary Least Squares),...
This paper describes the implementation and evaluation of a system used for mobile learning. It describes how such a system can be monitored, and what must be taken into consideration for the deployment of the system on mobile devices. It is also leaves room for the modification of the system.
This paper discusses how to apply the GIS/GPS technology to the common mobile Logistics business to meet the requirements of efficient Logistics management. In the full analysis of GIS (Geographic Information System) and GPS (Global Positioning System) technology superiority in Logistics, this paper focuses on the system design issues and principles, and puts forward a GIS/GPS based solution apply...
With the rapid development of automobile industry and public transport, how the information technology, such as GPS and GIS, can acclimate the need of this development, and get direct economic benefits, has become the focus of the whole society. The GPS/GIS information service system for taxi business, without changing the original mode and structure of the taxi operation system, offers services for...
Microgrid has lots of advantages and effective methods in usage and control of DGs, and has developed rapidly at each country. Electric Vehicles regarded as new traffic method has been paid more common attention. Batteries of electric vehicles can be regarded as mobile power storage devices, which will affect the stability of the power grid when paralleled in the grid. A common structure of the microgrid...
This paper tries to give a more specific concept for mobile supply chain management, a detailed analyzes of the mobile supply chain management and the main idea, which uses a developmental perspective to summarize the background of mobile supply chain, describes its operation process, six basic functions and mode of administration. This article discusses the advantages of mobile supply chain management...
This paper discusses the characteristics and key techniques of 3G mobile learning based on cloud services. Our research mainly focuses on mobile learning mode including active mode, passive mode and hybrid mode. And personalized learning method and resource integration approach are applied and analyzed. At last, we propose to employ cloud computing to mobile learning and build basic framework and...
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