The hierarchical real-time control systems (RCS) reference model architecture that is under development at the National Institute of Standards and Technology aims at designing and developing intelligent control for large and complex systems. A methodology being developed to create RCS-based systems exhibits many characteristics that are similar to object-oriented paradigms. The authors compare ...

Open Hypermedia Systems (OHS) are characterized by distributed, heterogeneous pieces of information. To cope with the main challenges of OHS one has to tackle consistency, eeciency, and interoperability issues. In this position paper we propose an OHS architecture based on an active object-oriented database system as well as SGML/HyTime as standardized interchange formats. By using active objec...

Service orientation has become a buzzword in research and practice during the last years. Enterprises consider investing in service-oriented architectures to increase the reuse of their existing software and to decrease development time and costs. On the one hand, standardization committees have advanced to define many layers of technical standards that are to become the technical backbone of a...

The paper proposes a metric based framework for evaluating service oriented architecture. Different models and metrics have been proposed in different perspective for evaluating service oriented architecture, but it has been recognized that the available models and metrics are insufficient. This paper gives a software standard based way to identify measurable attributes to propose metrics. This...

Concept-oriented views of electronic medical records are desirable, yet difficult to create. We have developed a system that creates concept-oriented views by identifying relevant patient information, however, previous such systems have received little evaluation. We present here an evaluation of our system's ability to identify relevant patient data and generate concept-oriented views, along w...

Two key international standards for messaging and directory services are evaluated using a prototype system. The aim is to develop a graphical user interface reference model that can be used by implementors to guide and benchmark their own development. The evaluation process is discussed which enabled the specification of the reference model. The development and evaluation of such graphical use...

Modern eBusiness processes are spanning over a set of public authorities and private corporations. Those processes require high security principles, rooted on open standards. The SECTINO project follows the paradigm of model driven security architecture: High level business-oriented security requirements for inter-organizational workflows are translated into a configuration for a standards base...

Collaborative e-learning has a set of characteristics which requires interaction and negotiation among learners and teachers. It also needs support to achieve high-level requirements for learning content and systems such as accessibility, reusability, interoperability and adaptability. The focus of this paper is to investigate three commonly used standards in e-learning which are: SCORM, IMS-LD...

In January of 1997, Health Level Seven (HL7) began developing Version 3.0 of its standard. The Version 3 effort represents a transformation of the way that HL7 and its Technical Committees will develop future HL7 information interchange standards. This transformation involves applying object-oriented modelling to the development and specification of information interchange standards. This paper...

We describe the formal models of two standards related to airport security: one at the international level and the other at the European level. These models are expressed using the Focal environment, which is an object-oriented speci cation and proof system. We show how Focal is appropriate for building a clean hierarchical speci cation for our case study using, in particular, object-oriented f...