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In situ processing is a promising solution to the problem of imbalance between computational capabilities and I/O bandwidth in current and future supercomputers. Initially designed for staging I/O, in situ middleware now can support a wide range of domains such as visualization, machine learning, filtering, and feature tracking. Doing so requires in situ middleware to manage complex heterogeneous...
Today's rich digital environment is characterised by the exponential increase of the amount of "born digital" data, following the penetration of real (e.g. sensors, wearable devices, etc.) and virtual (e.g. online platforms, user generated content, etc.) Internet connected sources. While the majority of the research outcomes is focused on the processing and connectivity aspects, a key question...
The Publish and Subscribe (pub/sub) dissemination paradigm has emerged as a popular means of disseminating time-sensitive or filtered information, usually in the form of middleware within the enterprise systems of Service-Oriented Architectures (SOA). Through the use of an event service, or broker, published information is disseminated only to the subscribers interested in that information. However,...
Cloud storage systems showcase a range of consistency models, from weak to strong consistency. Weakly consistent systems enable better performance, but cannot maintain strong application invariants, which strong consistency trivially supports. This paper takes the position that it is possible to both achieve fast operation and maintain application invariants. To that end, we propose the novel abstraction...
The standardisation of the architecture of electronic healthcare records is essential for two reasons: i) the records are being used to support shared care among clinicians with different specializations; ii) the standardisation process eases the introduction of mobile technologies within and among countries between people who provide and receive healthcare. It is a common problem previously addressed...
In recent years, common-use devices' equipment has seen a leap transition in terms of shipped technology, introducing the so called “smart things” to the consumer market. To take full advantage of opportunities arising from connectivity, smart things approached the application realm bringing the novel Web of Things vision to life. In this paper, we propose an approach for modeling and implementing...
The technological advances in hardware and software communication technologies are speeding up the path towards the actualization of the Internet of Things. Nonetheless, novel requirements are emerging for the effective and efficient usage of the huge amount of available sensor information and functional capabilities. Several approaches have been proposed for leveraging the Web to this purpose (i...
Simulator X is a software research platform for intelligent Real-time Interactive Systems. Based on the actor model, it supports fine grained concurrency and parallelism. The architecture uses actors to realize a distributed application state and execution model which is mapped to an object-centered global and coherent world view based on entities. The architecture pays specific attention to the minimize...
Firstly, the significance of EMR sharing and interchanging in the Internet environment is introduced. Then, the method to realize multi-source heterogeneous EMR systems' integration and data sharing is proposed with grid middleware technology. To establish the mapping mechanism from ontology to data source, the ontology modeling technology which generates ontology database of medical information is...
Sensor network technology has evolved and been applied to many fields including environmental monitoring and construction management. Further, it has extended to the context awareness service that perceives circumstances in each applied area. In this paper, the present study analyzes the incompleteness of real-time sensor data in in-network and server middleware to deal with incomplete data arising...
This paper proposes MISSA, a novel middleware to facilitate the development and provision of stream-based services in emerging pervasive environments. The stream-based services utilize voluminous and continuously updated data streams as their input. The characteristics of data streams bring new requirements on the development and provision of the services. To satisfy the requirements, a unique service...
In distributed IT systems, replication of information is commonly used to strengthen the fault tolerance on a technical level or the autonomy of an organization on a business level. In particular, information related to the identity of a user, which is used to authorize service access, is often replicated for these reasons. To ensure correct authorization decisions, replicas have to be kept consistent...
With the rapid development of Internet technology, web information system has achieved great development, and XML, as the new carrier and standard of information exchanging and calculating on the internet, has been widely used as well. While providing a uniform syntax and semi-structured data model, XML does not express semantics but only structure. This paper combines the web data integration problem...
In this paper the authors address some methodological and technical issues on managing collections of digital documents published on the web by many different and autonomous stakeholders. To cope with this kind of problems the notions of document, of cooperative knowledge community, a set of cooperative content management system nodes glued together by a web semantic oriented middleware, and content...
Modern scientific enterprises are inherently knowledge-intensive. In general, scientific studies in domains such as geoscience, chemistry, physics and biology require the acquisition and manipulation of large amounts of experimental and field data in order to create inputs for large-scale computational simulations. The results of these simulations must then be analyzed, leading to refinements of inputs...
The characteristics of publish/subscribe technology are of asynchronism and loosely coupled. This phenomenon makes producers and consumers are de-communicated in temporal and spatial domains during processing. It requires develop a dynamic integration in today's large-scale, distributed information system. This paper introduces a Semantic Integration Data Model (SIDM) for publish/subscribe systems,...
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