Researchers in software engineering proposed design method for distributed applications to construct a set of communicating system components from a global behavior. The joint behaviors of these components must precisely satisfy the specified global behavior. The next concern is to transform the constructed models of these components into executable business processes by ensuring the exchange of asynchronous messages among the generated business processes. The introduction of Service-Oriented Architecture (SOA) has helped to achieve this goal. SOA provides high flexibility in composing loosely-integrated services that can be used among business domains to carry out business transactions; this composition is known as service orchestration. Moreover, SOA supports Model Driven Architecture (MDA) such that services modeled as UML Activity Diagrams (AD) can be transformed into a set of Business Execution Language (BPEL) processes. Many researchers discussed the transformation of UML AD and the Business Process Modeling Notation (BPMN) into BPEL. However, they did not discuss the practical limitations that some of these transformations impose. This thesis addresses the imitations of the transformation from UML AD to BPEL processes using the IBM Rational Software Architect (RSA). We showed here that the tool is unable to create the correct BPEL artifacts from UML AD components in certain cases, for instance when the behavior includes the alternative for receiving single or concurrent messages, a weak loop, or certain choice activities. Furthermore, we provided novel solutions to the transformations in these cases in order to facilitate the transformation from UML AD to BPEL.

This thesis presents a semantic-based modeling approach for describing Service-Oriented Architectures (SOA). Ontologies are utilized as a major representation mechanism for describing various elements available in the architecture. The methodology proposes an architecture specification mechanism to constuct a unified ontology that enables transition from design concerns to the modeling elements. A multi-level modeling is also achieved by employing Model-Driven Engineering (MDE) techniques to describe various models at different stages of the software architecture. This aims to organize service-oriented models within a number of architecture viewpoints in order to provide an architectural perspective for SOA. The use of ontologies for model specification also allows us to make use of ontology mapping to specify the transformation between different models. Additionally, we present a case study to demonstrate the proposed methodology on a real-world healthcare scenario.

This research combines the methodology proposed in Axiomatic Design Theory (ADT) with a service oriented decomposition approach for systematic development of Service Oriented Architecture compliant systems. A previous study had applied ADT to component oriented development where simultaneous specification and decomposition of models related to requirements, design, product domain, and components were supported. Recently, Web services have gained popularity and they became a more desired alternative to components. This research sets the foundation for service-oriented modeling and development with ADT support through enhancing the component oriented work conducted before. The goal is to be able to consider customer needs viewed in the domain context, together with the requirements and design so that efficient development can take place based on existing Web services. The system under development is viewed as a hierarchy of process models where leaf-level processes correspond to Web services.

<p>Cascading Web Services represent a collection of services offered in a system consisting of multiple devices and multiple interacting platform independent networks. ‘Cascading’ enables Web Services to exploit access in diverse environments without manual intervention. The aim of this thesis is to investigate how Mobile Web Services interact with multiple other Web Services by allowing the generated content to cascade. These services are demonstrated as a technical design solution, in a number of cases within the field of Learning technologies. Communication among devices is preceded using request-response commands by cascading these commands between different Web Services that are self-contained and independent on their context or state.</p><p>The system signifies a typical Service Oriented Architecture (SOA) based on a distributed system. Cascading Web Services involve multiple transport networks including Bluetooth Technology, GPRS, Wi-Fi, and Wired Networks. Whereas the protocol of this communication is to bridge Wired and Wireless networks for data transactions, specifically from a Bluetooth location-based network. A number of particular cases will be illustrated in the context of ‘educational outdoor activities’, to demonstrate how the system solution works involving users.</p>

<p>This thesis emphasizes on investigating the relationship between the quality attributes and service oriented architecture (SOA). Due to quality attributes requirements drive the design of software architecture, it is necessary to maintain the positive quality of SOA and improve the negative quality of SOA. This thesis gives an introduction to SOA, Enterprise Service Bus (ESB) and MULE. Then, it covers information on quality of systems and tactics for achieving each quality attribute. Finally, we discuss the quality of SOA in detail, and illustrate how to set up a SOA and how to improve its quality using a case of an order for supermarket.</p> / Order of supermarket

Thesis (Ph. D.)--University of Alabama at Birmingham, 2007. / Title from PDF title page (viewed Feb. 4, 2010). Additional advisors: Barrett R. Bryant, Chittoor V. Ramamoorthy, Jeffrey H. Kulick, Gary J. Grimes, Gregg L. Vaughn, Murat N. Tanju. Includes bibliographical references (p. 161-183).

Diss.--Univ. Karlsruhe, 2009 / Includes bibliographical references and index.

published_or_final_version / Industrial and Manufacturing Systems Engineering / Doctoral / Doctor of Philosophy

The recent advancement in computer-integrated manufacturing related technologies (e.g. internet of things, information technology and service-oriented architecture) has prompted the need for a novel effective, efficient and economical automatic identification and data collection solution for manufacturing scenario. Accurate and timely manufacturing front line information is essential to guarantee the functions and performance of enterprise information systems (EISs) deployed, and is the basis of entire information flow in enterprise. Both researchers and commercial players have made great contributions to the fields of enterprise information systems and data capturing technologies. However, real-time data processing and on-line knowledge support to seamlessly link up the EISs and shop floor front-line operations are still open to discuss. This research discusses an overall solution for manufacturing real-time field data capturing, processing and disseminating strategy in ubiquitous manufacturing environment, named Ubiquitous Manufacturing Platform (UMP). This research discusses the design and development of UMP, which is an innovative framework to integrate Auto-ID hardware devices and software services for facilitating manufacturing shop floor production management. The proposed event-driven UMP aims to enable shop floor real-time visibility and traceability, and bridge the gap between frontline operations and management level activities (e.g. planning and scheduling). On one hand, production management objectives are fulfilled through defined and configured services, and eventually carried out at shop floor operating sites with managed Auto-ID devices. On the other hand, the generated shop floor real-time field data is captured as events, which are then processed and aggregated to leveled meaningful information to satisfy various information requirements for different roles in an enterprise. UMP is expected to improve the efficiency and effectiveness of production supervision and decision making, and to reduce the production disturbances. This research has made the following achievements and contributions. Firstly, a scalable and reconfigurable infrastructure for manufacturing real-time field data capturing, processing and disseminating, named UMP, is developed based on several core technologies to achieve seamless dual-way connectivity and interoperability among enterprise application systems, shop floor, production line and workstation levels. Secondly, an innovative information processing mechanism, namely critical event model, is designed to connect the real-time field data in manufacturing processes to implied business context information. Based on this model, real-time field data is able to be organized in various abstract levels, so as to be useful for making adaptive enterprise decisions. Thirdly, a lightweight devices middleware solution named Gateway Operating System (GOS), is designed and proposed to support UMP. GOS enables a unified system interface for manufacturing companies to deploy and manage their heterogeneous Auto-ID devices. Furthermore, it allows multiple back-end manufacturing applications to share the same Auto-ID infrastructure, and shields the application systems from the implementation detail of enabling hardware devices. Fourthly, the gateway event processing procedure is presented to implement the engine for shop floor real-time field data capturing, processing and disseminating. Based on the Auto-ID infrastructure, it combines the concept of event and software agents into workflow management to realize real-time reconfigurable ubiquitous manufacturing. / published_or_final_version / Industrial and Manufacturing Systems Engineering / Doctoral / Doctor of Philosophy

Interoperability between heterogeneous software systems is an important issue to increase software reusability in the software industry. Many methods are proposed to implement interoperable systems using distributed computing infrastructures such as CORBA, HLA and SOA. Those infrastructures can provide communication channels between software systems with heterogeneous environments. SOA (Service Oriented Architecture) provides a more flexible approach to interoperability than do the others because it provides platform independence and employs platform-neutral message passing with Simple Object Access Protocol (SOAP) to communicate between a service and a client.The main contribution of this study is to design and implement an interoperable DEVS simulation environment using the SOA concept and a new construct called the DEVS namespace. The interoperable DEVS environment consists of a DEVS simulator service and an associated integrator. The DEVS simulator service provides both simulator level and model level interoperability. Moreover, using the DEVS namespace, DEVS simulator services can be interoperable with any services using the same message types.To demonstrate the utility of the proposed environment, we describe various applications of the interoperable DEVS simulation environment. The applications are drawn from real world development of automated testing environments for military information system interoperability. A radar track generation and display federation and a model negotiation web service illustrated the ability of the proposed middleware to work across platforms and languages. Its ability to support higher level semantic interoperability will be demonstrated in a testing service that can deploy model agents to provide coordinated observation of web requests of participants in simulated distributed scenarios.