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Emerging healthcare applications can benefit enormously from recent advances in pervasive technology and computing. This paper introduces the CLARITY Modular Ambient Health and Wellness Measurement Platform:, which is a heterogeneous and robust pervasive healthcare solution currently under development at the CLARITY Center for Sensor Web Technologies. This intelligent and context-aware platform comprises...
In the pervasive computing paradigm, there is a strong demand towards user-centric services based on the context and service management. For implementing the user-centric services recent researches on the service-oriented system is focused on the context recognition, analysis and reasoning. Furthermore, the service-oriented systems also need to manage the structural and hierarchical context model...
A variety of methods have been proposed for selection of service providers as well as adaptation of business processes to manage service providers. However, each method is discussed under a certain set of often implicit assumptions or expectations. It has thus not clearly discussed how selection methods and adaptation methods can be chosen and combined in a consistent way with each other and with...
With the popularity of SOA, SOA policy becomes one of the core technical enablers for SOA governance and management. Different in several aspects from traditional policy for distributed system management, policy applied in SOA solutions needs to take into account various policy types and enforcement points in different layers of SOA solution stack and different phases of SOA lifecycle. As well, it...
Research in the basic principles of service granularity identified under the SOA framework and proposed to decompose services into three types these are basic services, synthesis services and composite services. It is proposed to decompose basic services from the functional modules (which can be seen as a synthesis service), and then designed components and business objects based on the basic service,...
Due to technological advances of handheld computing and communication devices, Mobile commerce (M-commerce) has emerged and attracted a growing number of research efforts. M-commerce not only extends Internet-based Electronic commerce (E-commerce), but also offers a unique business opportunity with its own features, such as ubiquity, accessibility, portability, etc. In this paper, we discuss some...
A traditional research direction in SA and dependability is to deduce system dependability properties from the Knowledge of the system Software Architecture. This will reflect the fact that traditional systems are built by using the closed world assumption. In mobile and ubiquitous systems this line of reasoning becomes too restrictive to apply due to the inherent dynamicity and heterogeneity of the...
Mobile software systems are characterized by their highly dynamic and unpredictable execution context. Such systems are permeating a number of domains where the systems operate in constantly changing conditions. We refer to such systems as Situated Software Systems. These systems are often deployed in mission-critical settings with stringent reliability requirements. Existing approaches to performing...
Pervasive applications, like smart living, geriatrics care, agricultural development, etc, are rapidly developed recently. Situation-awareness and workflow-centric are important characteristics of the applications. Service-oriented architecture which provides flexibility in integrating heterogeneous devices and communication networks might improve the execution of pervasive applications. To integrate...
Mobile devices such as smart phones are increasingly permeating society. With strides in computational power, coupled with the ability to connect to other small devices, smart phones are able to host novel services. To address the repetitive problems associated with mobile service development, namely service reachability, scalability and availability, we have developed Odin, which is a middleware...
Today's e-learning environments are still far from being accessible for people with disability. Furthermore, the availability of accessibility guidelines, the diversity of the e-learning platforms and evolution of assistive technologies do represent just a partial solution. In fact, adopting the accessibility since the design phases could provide a rational solution. Therefore, the application of...
Cloud Computing raises numerous questions about the implementation and deployment of Service-Oriented Architecture (SOA) and virtualization. It also raises questions related to services contracts, their management and verification, independently of services migration within the Cloud(s). Issues and solutions related to the verification of contracts compliance are referred as Service Level Checking...
As a standard modeling language of software architecture design, UML lacks formal semantics on account of its informal graphical notation. To further provide refined description of UML, OCL is primarily and widely employed. Generally, OCL constraints are written manually, which may cause incorrectness and extra overhead. Therefore, generating OCL constraints template for UML models is a superior solution...
Web service composition is to integrate existing web services to provide a compound service which satisfies specified requirement. However, traditional web service compositions fail to provide different compound services under various scenarios. In this paper, we propose an approach to compose services with context. A context ontology is defined to describe the scenario for user. An abstract service...
The modern Web architecture basically follows the Representational State Transfer (REST) style. This style offers the architectural properties necessary to implement the Internet-scale Web. However, most authentication and delegation technologies that rely on session state actually deviate from the REST style. It must be noted, however, that the diversity of these technologies is imperative for the...
This work presents an implemented framework called Real Time Multi Logic Reasoner (RT-MLR) that aims to help a development of context-aware systems. RT-MLR has been designed combining the rule based method with the regular object-oriented architecture. RT-MLR has an inference engine that allows to express and merge knowledge through rules in three logic types: First-Order Logic, Fuzzy Logic and Temporal...
Security analysis methods can provide correct yet meaningless results if the assumptions underlying the model do not conform to reality. We present an approach to analyze the security of software-intensive system architectures that focusses on making these underlying assumptions explicit, so that they can be taken into account. Starting from an Alloy model of a software architecture, a set of constraints...
Reusing software components is an important but not standardised task in software engineering. This will become a problem if requirements change in the future. By the use of web services in service-oriented architecture, as a communication interface for devices, the automation area has to define how to handle these reusable units. At the moment, no standardised way is defined. This publication analyses...
Business requirements for rapid operational efficiency, customer responsiveness as well as rapid adaptability are actively driving the need for ever increasing communication and integration capabilities of software assets. In this context, security, although acknowledged as being a necessity, is often perceived as a hindrance. Indeed, dynamic environments require flexible and understandable security...
CUBIQ is a common and shared platform which mediates diversified sensor systems and ubiquitous applications. The platform enhances ubiquitous applications through diversified federations among sensors, services and applications. The platform offer transparent context data access, real-time and scalable data dissemination and processing and intelligent service collaborations.
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