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Pervasive Computing also called as ubiquitous computing where computing is made available to anytime and anywhere. It is very fast growing innovative trends in the field of Internet of Thing (IOT). Context Awareness is key part of pervasive computing. Context aware computing it means act of both sensing data from sensor and react according to sensory data. Context is nothing but information about...
Existing research on implementing the mobile cloud computing paradigm is typically based on offloading demanding computation from mobile devices to cloud-based servers. A continuous, high quality connection to the cloud infrastructure is normally required, with frequent high-volume data transfer, which can have a detrimental impact on the user experience of the application or service. In this paper,...
Pervasive applications are involving more and more autonomous computing and communicating devices, augmented with the abilities of sensing and controlling the logical/physical environment. To enable context-awareness for such applications, we are challenged by the intrinsic asynchrony of the computing environment. Predicate detection is a well studied technique dedicated to detecting global predicates...
In the last years a new computing paradigm called Internet of Things (IoT) has been gaining more attention. This paradigm has become popular by embedding mobile network and processing capability into a wide range of physical computing devices used in everyday life of many people. An important part that composes the IoT is the middleware, which is a system that abstracts the management of physical...
Mobile applications envisaged in the Smart City rely on the capacity of acquiring context from a vast array of sensors and other data sources, to deliver context-aware services at an urban scale whilst leveraging the Internet of Things (IoT). This work analyses existing context dissemination techniques, encompassing both probabilistic and deterministic algorithms, and advocates the case for ACT (Adaptive...
Context aware mobile applications are special types of context aware network systems that process gathered data from environment with context cycle functionalities and special infrastructure to obtain context information. Here, modelling and reasoning are most important functionalities and middleware is one of the common infrastructure to implement these functionalities. Essentially, techniques that...
There is currently lot of work in Ambient Intelligence particularly in context awareness. Context awareness enables service discovery and adaptation of computing devices for Ambient Intelligence application. In the same time, there is a common agreement of the fact that context aware systems should be responsive to Multi agents, assisting a large number of people, covering a large number of devices,...
Web service compositions run in changing environment where different context events can arise to affect the execution of services. In order not to make service execution affected by context events, context-aware service composition becomes one of the major research trends. Service providers can develop context-aware services which can adapt their behaviors dynamically to execution contexts. However,...
Preserving the privacy of users' information is an essential requirement in information management systems. The emergence of context-aware services makes protecting the users' information an even greater challenge. Addressing this challenge requires an automatic mechanism that allows users to control their information at real-time. In this context, we propose a middleware called Context-Aware Privacy-preserving...
To realize smart home services, several context-aware applications should be deployed which adapt their behavior depend on context information of home occupants. For context-aware service, context providing, processing, reasoning, delivery and designing context-aware applications are complex tasks. In this paper, we present a context-aware middleware which provides above tasks and supports context...
Smart applications rely on middleware abstraction to interact with the environment in order to collect relevant information for context determination. Among the forms of representing context in smart spaces, ontologies have been used because of the possibility of sharing, reusing and also modelling the semantics of context, independent of programming language, operational system and/or middleware...
Service-Oriented Architecture (SOA) is a software paradigm with a uniform means to offer, discover, compose services' capabilities to meet desired effects with measurable performance expectations. While most of today's SOA tools support service process compositions by considering only functional attributes, additional support for composing service processes by non-functional attribute is needed. In...
The vision of autonomic computing involves distributed nodes capable of managing and preserving themselves. In practice, autonomic computing is also strongly connected to the concepts of mobility and platform heterogeneity since next generation networks assume different types of mobile nodes that operate inside ad hoc environments. In such cases where the context changes can be frequent, the capability...
Nowadays, as mobile smart terminals are becoming increasing widespread and multitudinous sensors are included, the applications with various new functions that run on mobile terminals are largely expanded. This paper proposes a Cross-Platform and Context-Awareness (CPCA) middleware intended for application developers, by which they can develop context-aware applications by providing the context reasoning...
With the rapid development of the information technology, it is inevitable that the distributed mobile computing will evolve to the pervasive computing gradually whose final goal is fusing the information space composed of computers with the physical space in which the people are working and living in. Therefore, pervasive applications need a middleware that can detect and act upon any context changes...
Context-aware service provisioning for mobile phones is challenging because of diverse user contexts and mobile applications. The context recognition process generally reduces the device performance due to the competitive use of limited resources in the mobile phone. While extensive attempts have been made to provide appropriate services based on user context, previous work is limited to supporting...
With the rapid development of the information technology, it is inevitable that the distributed mobile computing will evolve to the pervasive computing gradually whose final goal is fusing the information space composed of computers with the physical space in which the people are working and living in. To achieve this goal, one of the problems is how to continuously monitor/capture and interpret the...
With the emergence of service-oriented architecture (SOA), the provision of business-to-business as well as user-centric services becomes increasingly simple and fluent. Also, the design, development and deployment of services - either elementary or composite - have constantly gained ground. However, the user's context must constitute an essential aspect of such services in order to improve the end-user...
To enable context-awareness for many distributed mobile applications, an architecture is needed that supports the collecting of disseminated context attributes. After the structuring and storing of context, the interpretation and adaptation with reference to the current context and changes of context must be applied. These tasks are common to a large set of context-aware applications and can be centralized...
We present and discuss a context aware publish subscribe system. This allows for efficient communication between different components within distributed environments. For this we introduce context-awareness into the subscription handling. Our middleware allows to attach context properties to event subscriptions. Only if those properties are satisfied by the current state of the world, the events are...
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