The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The convergence of Internet and mobile devices has radically changed the way people communicate and interact with each other, and demand for applications that are "social" enough to assist their daily interactions. To support such device mediated interactions, the social relationships between actors need to be systematically modeled and represented. In addition, an application facilitating...
In this paper, we address the fidelity of information collected from distributed, interactive, pervasive computing environments. Queries in these dynamic networks come in two forms: snapshot queries and continuous queries. The former executes through the network and returns values that satisfy the query criteria at a particular instant in time. The latter expects a result that is updated over time...
Context-aware applications do not always adapt their behaviours in ways that users expect due to a variety of reasons. Applications that lack intelligibility are often incapable of offering explanations to users as to why they decided to adapt their behaviours in certain ways, and providing feedback mechanisms for users to take control of any unwanted adaptation. This can lead to loss of user trust,...
Conventional layered protocols are not capable to handle the vagaries of Wireless Mesh Networks (WMN) such as rapidly changing wireless channel quality, battery power and network topology. Most WMN cross-layer proposals to overcome these problems utilize only a limited set of parameters from the concerned layers rendering them incapable of network and system wide optimizations as they do not consider...
Due to the high cost of replication, incurred mainly by consistency management, it may be infeasible to use uninformed object replication in collaborative applications in pervasive environments, since resources are constrained, nodes are heterogeneous, and application behaviour is highly dynamic. Consequently, this paper proposes an adaptive replication scheme that dynamically creates and releases...
Context-aware computing has been considered as promising topic in pervasive computing area, but a review of the existing approaches shown that developing diverse application services in this area is still motivated based on the analysis of existing approaches in literature. The purpose of this study, is proposed the composite context information model to provide the knowledge that is determine the...
What if physical artifacts or devices can be aware of each others' physical presence and location, and interact with each other without user intervention or to enable innovative applications? We propose a model for devices to manage awareness of each other, extending a spatial model of interaction previously used in virtual environments. While there has been previous work on cooperative artifacts,...
With the advent of ubiquitous computing environments it has become increasingly important for applications to take full advantage of Context aware computing to increase the satisfaction of the users in entertainment services. The contextual information, such as, user location, user's profile, user interest, user role, user age, etc has to be considered to offer greater services to the user without...
In the pervasive environment, intelligent taxation systems are required to be adaptive to the changing environment and the volatile requirements of taxation rules. The business rule technique is effective in achieving these kinds of adaptation. In this paper, we present an OO Petri Net based Business Rule modeling method of Intelligent Taxation System. And the structure and grammar rules of the business...
Ubiquitous Information Systems (ISs) should support mobility of users and reason efficiently on their context to provide relevant and real-time information. ISs should be particularly adaptive and context-aware by managing and responding properly to occurring events. A need of integrating an adaptive and distributed event based system raises to lead to a diversity of proposed approaches and architectures...
With advances in intelligent technologies, e.g. ambient intelligence, context-aware, and pervasive systems, much research is now devoted to a computational paradigm that senses and perceives changes in human emotion. This paper presents a context-aware architecture for adaptive emotional sensibility analysis called CAF-ESA (a Context-Aware Framework based Emotional Sensibility Analysis) with adaptive...
Pervasive gaming as a research field has been attracting more and more attentions from researchers and practitioners. However, there is no much work on player's general attitude to pervasive games even this is an important aspect of understanding player enjoyment of pervasive games. We created a survey where we wanted to investigate people's attitude towards pervasive games. The survey included questions...
Nowadays one can observe rapid development of various technologies supporting autonomic features and context-awareness of pervasive systems. And this is perfectly understandable as these features effectively increase the systems autonomicity. However, in the case of safety-critical realtime systems it becomes crucial to determine how the entire system performance is affected by the growth in complexity...
The SHELL project aims at implementing state of art technologies in the domains of Wireless Sensor Networks, Ambient Intelligence, Context Awareness, Automated Learning, in order to design a new concept for assisting people affected by mental diseases or living alone. The goal to achieve is a modular device kit system, easy to deploy and to use, which will be able to learn to peculiar habits of the...
The experience of ubiquitous and seamless access to heterogeneous mobile communication networks is one of the core issues of today's research. One important issue is the reliable detection of spectrum holes. in this paper, we address three important spectrum holes detection algorithms in cognitive wireless networks: MTM-SVD based spectrum holes detection algorithm, Kalman filtering Predictor and Particle...
In open pervasive computing environment, various devices and applications are frequently changeable. It is hard to authenticate strange entities for lack of centralized management authority. In order to solve access control problem in open pervasive environment, a trust based access control framework is introduced in this paper, and a corresponding prototype system is designed, implemented and integrated...
The main goal of the COIN (Enterprise Collaboration and Interoperability) European Project is to provide an Evolutionary and Pervasive Service Platform, realizing a collaborative Digital Ecosystem that allows providers of business services to publish their offers, and potential customers to easily locate and access the services that best suit their needs. Given the absence of a central management...
Online/offline signatures are used in many applications where the signer must respond quickly once the message to be signed is presented. The idea is to split the signing process into two phases: The first phase is performed offline before the message to be signed is available and the second phase is performed online after the message to be signed is provided. Recently, an identity-based online/offline...
Context information is characterized by several qualities that make pervasive services challenging compared to conventional Web services. The additional complexities associated with pervasive services require solid software engineering practices. This paper presents a novel approach based on model-driven development for representing complex crosscutting context-dependent functionality in service interfaces...
Current content adaptation systems make only limited use of the user context. In this paper, the user context is analyzed in detail and semantic divergence is found as a hamper of making use of context. Aiming at handling these problems, an intelligent control model using semantic web techniques is proposed, some implementation details and examples are discussed as well. Under the favor of model,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.