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Inference of high-level context is becoming crucial in development of context-aware applications. An example is social context inference - i.e., deriving social relations based upon the user's daily communication with other people. The efficiency of this mechanism mainly depends on the method(s) used to draw inferences based on existing evidence and sample information, such as a training data. Our...
This paper presents a qualitative risk analysis of the General Packet Radio Service (GPRS) technology. GPRS presents several essential security weaknesses which may lead to security attacks that can compromise the network operation and the data transfer. We perform a detailed threat analysis by identifying the possible attacks that may result from the GPRS security weaknesses. The analyzed threats...
The paper describes a service engineering modeling of the integration of a parking guidance system (PGS) services with an electronic health record (EHR) system. The integrated system provides services for two groups of healthcare users: (1) patients who need urgent care, and (2) healthcare providers who perform emergency operations. By entering a zip code and basic patient data, the system would return...
In recent years, many mobile payment (MP) schemes have been proposed and used in practise. However, a prerequisite for extended acceptance and adoption of MP technologies is to deploy an effective MP system. So far, there is no such a standardised and scalable MP platform. Most current MP schemes are circumscribed by its mobile network infrastructures. Fortunately, the fast advancement of 3G technology...
Mobiscopes extend the traditional sensor network model, introducing challenges in data management and integrity, privacy, and network system design. Researchers need an architecture and general methodology for designing future mobiscopes. A mobiscope is a federation of distributed mobile sensors into a taskable sensing system that achieves high-density sampling coverage over a wide area through mobility.
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