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Pervasive networks formed spontaneously by wireless mobile devices capable of ad hoc communication make it possible to get services from these devices, and to compose them dynamically so as to provide people with new and more sophisticated application services. Discovering, invoking and composing services in such networks are challenging tasks, due to the numerous and unpredictable connectivity disruptions...
He Near Field Communication (NFC) technology is very comfortable for the user as communication starts without any further configuration. This property makes the standard well suitable for the use with mobile coupons (mCoupons). The application of mCcoupons is quite a novel issue but is becoming increasingly popular among E-commerce because the extensive use of mCoupons can help consumers to save money...
New technologies in education have accelerated access to information, improved the relationship between learners and to some extent, contributed to the sharing of knowledge and experience. The combination of such developments with the rapid technological innovations in the field of mobile devices highlights the need for these devices to be utilized properly, while studying their pedagogical/ educational...
Messenger apps today utilize various elements to enhance user's experience on social media. Using image sharing features, the user is able to express his or her ideas in a more concise manner. When combined with writing functionalities, it can further enhance the ideas presented. While there are multiple applications available in the market that offer such functionalities, these applications might...
We present an application of an open source platform for wireless body sensor network called DexterNet to the problem of monitoring different subjects. The architecture of the system consists of three layers. At the body sensor layer (BSL), the integrated monitoring of a person's activities, geographic location, and air pollution exposures occurs. At the personal network layer (PNL), a wireless mobile...
In this work, we propose a general principle for designing RSS-based algorithms so that they are robust to all-around signal strength attacks. Specifically, when the fingerprint for the mobile device changes from <; S<;sub>1<;/sub>, S<;sub>2<;/sub>,..., S<;sub>n<;/sub> > to <; S<;sub>1<;/sub> - S<;sub>t<;/sub>, S<;sub>2<;/sub>...
This paper details the ongoing development of a context-sensitive InfoStation-based architecture supporting the mobile eLearning service provision within a University campus domain. A general overview of this architecture is presented highlighting the main functional entities. Issues concerning the implementation of a context-sensitive service environment within the system are also detailed, including...
With the developing technology, the constraints of processor speed, memory and input/output of small mobile and wireless devices such as personal digital assistants-PDAs (such as Pocket PCs, Tablet PCs, and smart phones), and sensors, which are the main user devices of pervasive healthcare computing have began to decline. The applicability of the artificial neural networks algorithms that require...
In this work, the bulk-gate controlled circuit to improve the power supply ripple ratio (PSRR) of a Low Dropout Regulator (LDO) which deteriorates due to lowering power consumption is proposed. Designing with 0.25 mum CMOS process, the simulation results by HSPICE shown that the proposed circuit provides a high performance of PSRR even though 1/10 of the power consumption is reduced compare to the...
A low-cost intelligent mobile phone-based wireless video surveillance solution using moving object recognition technology is proposed in this paper. The proposed solution can be applied not only to various security systems, but also to environmental surveillance. Firstly, the basic principle of moving object detecting is given. Limited by the memory consuming and computing capacity of a mobile phone,...
The increasing ubiquity of mobile embedded systems has been matched by the evolution of a variety of wireless network standards and technologies. The major constraints of wireless embedded systems are limitations of communication bandwidth, processing capabilities, and battery power. Remote wireless embedded systems often act as sensors, which provide data to a certain community. The exchange of data...
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