200,941 Hits in 4.8 sec

An Infrastructure for Reactive Information Environments [chapter]

Rudi Belotti, Corsin Decurtins, Michael Grossniklaus, Moira C. Norrie
2005 Lecture Notes in Computer Science  
We introduce the concept of reactive information environments and a general infrastructure for experimentation with such systems.  ...  Its asynchronous state-based processing model is described along with the architectural requirements and main components of our infrastructure.  ...  However, these components are all based on the traditional request-response model and cannot be used in their current form for a reactive information environment.  ... 
doi:10.1007/11581062_26 fatcat:oerdbltdizdonp6rzw62hj2zgi

A Model-Driven Approach for Incorporating Reactive Rules in Declarative Interactive TV Applications

Patricia Dockhorn Costa, Joao Paulo A. Almeida, Igor Magri Vale, Izon Thomaz Mielke
2011 2011 IEEE International Symposium on Policies for Distributed Systems and Networks  
Reactive rules; model-driven approach; interactive television; context-awareness; I.  ...  This ensures the inclusion of context-aware rules into interactive TV applications such that they can be reactive to the user's context and alter their behavior according to rules referring to events and  ...  The work described in [3] also proposes a Model-Driven Development method for context-aware pervasive systems resulting in Java code.  ... 
doi:10.1109/policy.2011.42 dblp:conf/policy/CostaAVM11 fatcat:2stpskf6enbzlbha3liqp76bz4

Context-sensitive authorization for asynchronous communications

V. Hourdin, J.-Y. Tigli, S. Lavirotte, G. Rey, M. Riveill
2009 2009 International Conference for Internet Technology and Secured Transactions, (ICITST)  
We experiment and validate our approach using context as an authorization factor for eventing in Web service for device (like UPnP or DPWS) 1 .  ...  Quasi-static authorization Almost ten years ago, static information for authentication and authorization began to be seen as a limitation  ...  Access control rules can thus be adapted to users' context, based on which observers are Figure 7 models the authorization process based on observer information.  ... 
doi:10.1109/icitst.2009.5402550 fatcat:nnvovsxnu5hdvcrmtmnzmnulti

Class-Based Context Quality Optimization for Context Management Frameworks

Ahmed Shawky, Rasmus Olsen, Jens Pedersen, Hans-Peter Schwefel
2012 2012 21st International Conference on Computer Communications and Networks (ICCCN)  
The concept includes a soft realtime algorithm for model based context access configuration and QoS class assignment, and allows to put probabilistic bounds on the information reliability (the so-called  ...  In this paper we develop a QoS Control network concept for context management systems.  ...  reactive (inc.) . J reactive (inc.) event (inc.) event (inc.) . J event (inc.) periodic (inc.) periodic (inc.) . J periodic (inc.)  ... 
doi:10.1109/icccn.2012.6289287 dblp:conf/icccn/ShawkyOPS12 fatcat:xroxkzm4vzhn3budjhkqugy6iu

Context-sensitive authorization in interaction patterns

Vincent Hourdin, Jean-Yves Tigli, Stéphane Lavirotte, Gaëtan Rey, Michel Riveill
2009 Proceedings of the 6th International Conference on Mobile Technology, Application & Systems - Mobility '09  
We experiment and validate our approach using context as an authorization factor for eventing in Web service for device (like UPnP or DPWS).  ...  We analyse how dynamic information can be used to improve security in the authorization process, and what are the implications when applied to interaction patterns.  ...  In their model, they define that environmental predicates can be used for environmental constraints or context-sensitive information.  ... 
doi:10.1145/1710035.1710055 dblp:conf/mobility/HourdinTLRR09 fatcat:pgcy3s3xrvcwtd6zsbyivm62hq

Network aware dynamic context subscription management

A. Shawky, R. Olsen, J. Pedersen, H. Schwefel
2014 Computer Networks  
Context-awareness is a key requirement in many of today's networks, services and applications. Context management systems are used to provide access to distributed, dynamic context information.  ...  In this paper we describe a system and algorithms that are capable of configuring effectively context access strategies in order to maximize reliability of all accessed dynamic context information.  ...  As for the subscription distribution, for the class-based scenario, it is on average 0.7 rejects, 18.55 reactive, 30.55 proactive event driven and 0.2 for proactive periodic update.  ... 
doi:10.1016/j.comnet.2013.10.006 fatcat:bna7rdgj2rgydpa2kltnrqfo3y

Reactive Framework for Resource Aware Distributed Computing [chapter]

Rajesh Gupta, R. K. Shyamasundar
2004 Lecture Notes in Computer Science  
One of the common features in the spectrum of applications has been the reactivity of the systems and context of the environments.  ...  In this paper, we propose a reactive framework to enable the development of pervasive computing applications for different context environments.  ...  Let us look at models that have been proposed for general communication/mobile systems. Some of the candidate models are based on π calculus [13] such as ambient calculus, spatial logic [7] etc.  ... 
doi:10.1007/978-3-540-30502-6_33 fatcat:dslcvdezezgyjiw4evs7w3rxui

Context-aware Authorization in Highly Dynamic Environments [article]

Jean-Yves Tigli, Stephane Lavirotte, Gaetan Rey, Vincent Hourdin and Michel Riveill
2011 arXiv   pre-print
We experiment and validate our approach using context as an authorization factor for eventing in Web service for device (like UPnP or DPWS), in smart home security.  ...  or eventing.  ...  In their model, predicates can be used for zation rules, adapt security system to available sources, environmental constraints or context-sensitive information.  ... 
arXiv:1102.5194v1 fatcat:qjoopgnx7vgqpfxsr6bwdlt7cu

A blackboard based perspective of reactive scheduling [chapter]

E. Szelke, G. Markus
1995 IFIP Advances in Information and Communication Technology  
For this, the blackboard system of ESU incorporates a cognitive model of operator functions, normative to supervisory behavior in dynamic discrete manufacturing environment, and a responsive blackboard  ...  Reactive scheduling as a constraint-based opportunistic problem solving process is performed by the system's case and rule-based reasoning knowledge sources as cooperative multi-agents and also takes into  ...  and their ways of handling into the system's case-base (for reactive scheduling, for instance).  ... 
doi:10.1007/978-0-387-34928-2_6 fatcat:oozzyug7izadzlgnvhsxdpxyjm

Middleware for Reactive Components: An Integrated Use of Context, Roles, and Event Based Coordination [chapter]

Andry Rakotonirainy, Jaga Indulska, Seng Wai Loke, Arkady Zaslavsky
2001 Lecture Notes in Computer Science  
The associated architecture uses a component based modelling paradigm, and is held together by an event-based mechanism which provides significant flexibility in dynamic system configuration and adaptation  ...  Limbo offers an asynchronous programming model (tuple space) and defines an architecture for reporting and propagating QoS information that might be related to the system.  ...  We see such an approach as providing useful concepts for high-level modelling of a distributed system in general and pervasive systems in particular.  ... 
doi:10.1007/3-540-45518-3_5 fatcat:rbd5ulq6nbaovf4hqidtqdfn3i

A context-aware reflective middleware framework for distributed real-time and embedded systems

Shengpu Liu, Liang Cheng
2011 Journal of Systems and Software  
MARCHES uses a layered architecture and provides both component-level and system-level reflection to incorporate standard components, a hierarchical event notification model to evaluate contexts, and a  ...  Context -Aware Reflective Middleware (CARM), which supports application reconfiguration, has been an appealing technique for building Distributed Real-time and Embedded (DRE) systems as it can adapt their  ...  The authors would also like to thank Lisa Frye for proofreading this paper.  ... 
doi:10.1016/j.jss.2010.09.049 fatcat:krodmlcf3rbvbmjeaoa6jtu3gi

A Reactive and Proactive Approach for Ambient Intelligence

Alencar Machado, Daniel Lichtnow, Ana Marilza Pernas, Leandro Krug Wives, José Palazzo Moreira de Oliveira
2014 Proceedings of the 16th International Conference on Enterprise Information Systems  
In this sense, the objective of this work is to propose an approach for providing reactive and proactive behavior in Ambient Intelligence systems.  ...  Equipped with ubiquitous technologies, Ambient Intelligence uses sensors to monitor the environment and to collect data continuously providing systems with updated information.  ...  approach for handling reactive and proactive behaviors; and (iii) a model of sliding windows for modelling time in complex event processing.  ... 
doi:10.5220/0004884205010512 dblp:conf/iceis/MachadoLPWO14 fatcat:en4znucnojgn3ohee7xi6u43gu

DREAM: Distributed Reliable Event-Based Application Management [chapter]

Alejandro Buchmann, Christof Bornhövd, Mariano Cilia, Ludger Fiege, Felix Gärtner, Christoph Liebig, Matthias Meixner, Gero Mühl
2004 Web Dynamics  
We present a system overview of Dream, a reactive middleware platform that integrates event detection and composition mechanisms in a highly distributed environment; fault-tolerant and scalable event notification  ...  that support proactive event notification.  ...  Reactive Functionality An event-based system depends on the appropriate reaction to events.  ... 
doi:10.1007/978-3-662-10874-1_14 fatcat:33ca2rfcrvhgdmema6weurtesy

Software Architecture for Mobile Computing [chapter]

Amy L. Murphy, Gian Pietro Picco, Gruia-Catalin Roman
2003 Lecture Notes in Computer Science  
data context ♦ Read only by user, updated by system ♦ Augmented with system information, e.g., host configuration, link state (QoS) ♦ LIME is the result of a development process integrating formal modeling  ...  and delivered ♦ Partial order of events is guaranteed Event-Based Polimi 32 Shared Memory ♦ Provide distributed shared memory development paradigm in the mobile environment ♦ MARS/Tucson do this for mobile  ... 
doi:10.1007/978-3-540-39800-4_9 fatcat:g7uiakrkofetxbjzilds54jiey

Stream my models: Reactive peer-to-peer distributed models@run.time

Thomas Hartmann, Assaad Moawad, Francois Fouquet, Gregory Nain, Jacques Klein, Yves Le Traon
2015 2015 ACM/IEEE 18th International Conference on Model Driven Engineering Languages and Systems (MODELS)  
The models@run.time paradigm promotes the use of models during the execution of cyber-physical systems to represent their context and to reason about their runtime behaviour.  ...  In this paper, we introduce a distributed models@run.time approach, combining ideas from reactive programming, peer-to-peer distribution, and large-scale models@run.time.  ...  Given the fact that the models@run.time paradigm promotes the use of models to represent the state and context information of cyber-physical systems, the runtime models of distributed cyber-physical systems  ... 
doi:10.1109/models.2015.7338238 dblp:conf/models/0001MFNKT15 fatcat:rjtonn5nlfcw7ku5w3vmyhnv2y
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