P075 - EMISA 2005 - Enterprise Modelling and Information Systems Architectures
Auflistung P075 - EMISA 2005 - Enterprise Modelling and Information Systems Architectures nach Erscheinungsdatum
1 - 10 von 19
Treffer pro Seite
Sortieroptionen
- KonferenzbeitragA model-driven approach for the rapid development of E-negotiation systems(Enterprise modelling and information systems architectures, 2005) Benyoucef, Morad; Rinderle, StefanieMost of today's e-marketplaces support a single negotiation protocol. The protocol is usually built into the e-marketplace infrastructure, therefore if a new one is introduced then a time consuming and complex process of implementing it takes place. Moreover, participants in the e-marketplace need to adapt their interfaces to the new protocol, especially if they make use of automated means such as software agents to interact with the e-marketplace. This paper reports on a model-driven approach and a framework for rapid and user-friendly development of configurable e-marketplaces and automated e-negotiation systems. A designer on the e-marketplace specifies negotiation protocols using Statecharts and feeds them to a mapping system that transforms them into web service orchestrations. Participants use automated negotiation systems to interact with the e-marketplace. An automated negotiation entity capable of interacting with the e- marketplace is generated based on the negotiation protocol implemented on the e- marketplace. The automated negotiation entity is provided with negotiation strategies and tactics specified in a declarative format. We propose a mapping algorithm to transform Statechart models of negotiation protocols into web service orchestrations.
- KonferenzbeitragIncremental development of business process models(Enterprise modelling and information systems architectures, 2005) Simon, CarloThe purpose of formal and so called semi-formal approaches to business process modeling is to provide a general technique for the development of workflow based information systems. For this, a concise and repeatable transformation of initial requirements into the final system must be achieved. Moreover, there is also a need for complex models to include justifications that explain the meaning and purpose of each component of the entire model. However, this is not sufficiently supported by current graphical methods. This paper therefore introduces a formal language for process modeling which allows incremental development, graphical visualization of the model, and adding justifications to the model.
- Editiertes Buch
- KonferenzbeitragVisualizing join point selections using interaction-based vs. state-based notations exemplified with help of business rules(Enterprise modelling and information systems architectures, 2005) Stein, Dominik; Hanenberg, Stefan; Unland, RainerIn Aspect-Oriented Software Development, the selection of join points is an essential part. Join point selections identify the points in a program (i.e. in its code, or during its execution) at which aspectual adaptations need to take place. In order to communicate such selections independent of the underlying aspectoriented programming language, it is desirable to visualize join point selections in an appropriate way. In this paper we focus on the appropriateness of interaction diagram-based and state diagram-based visualizations of join point queries, exemplified with help of two business rule examples. As a result, we discover that even if join point queries are based on interactions in the base application, state diagram-based representations are needed to appropriately capture the selection semantic of that query.
- KonferenzbeitragCost oriented modelling of IT-landscapes: generic language concepts of a domain specific language(Enterprise modelling and information systems architectures, 2005) Kirchner, LutzThe accounting of IT-costs is an important aspect not only in the context of corporate cost accounting in general, but also for the management of IT. Various approaches to IT-cost accounting exist. However, they usually are implemented with only loose integration to the company s IT-management. This often causes discrepancies between the numbers used for accounting and those for planning and operating the IT. A tighter integration of the information basis, which the two corporate functions (cost accounting and IT-management) share, is suggested, to solve this problem. One way to achieve this integration, is the implementation of cost accounting concepts in an IT-management method. In this paper we introduce concepts for modelling IT-costs within a domain specific language for the modelling of IT-landscapes. The language is part of an IT-management method, which is currently under development. Using these concepts, costs can be modelled on the same level of abstraction as IT- components, thereby establishing a higher integration level between corporate cost accounting and IT-management.
- KonferenzbeitragA framework for comparing conceptual models(Enterprise modelling and information systems architectures, 2005) Pfeiffer, Daniel; Gehlert, AndreasConceptual models are a widely used mean for documenting software systems as well as describing organisational structures. The trend towards integrated and flexible information systems has encouraged research about the comparison of conceptual models. Current approaches on the identification of similarities between conceptual models often adopt an automation perspective only. In this paper we will unfold severe arguments that a fully automatic model comparison process is not feasible. Furthermore, we will show that only a semiautomatic process can perform the comparison of conceptual models at the semantic level. On this theoretical basis, we will develop a framework which identifies all necessary and sufficient components for comparing conceptual models. We will show that this framework includes all the requirements that a semi-automatic model comparison process must meet.
- KonferenzbeitragA proposal for a web service-based archicture to support the enactment of units of learning(Enterprise modelling and information systems architectures, 2005) Caeiro-Rodríguez Manuel; Llamas-Nistal, Martín; Anido-Rifón, LuisThis paper proposes an architecture based on Web services to support the enactment of `units of learning' (e.g. a course, a lesson, a lab practice) modeled in accordance with an Educational Modeling Language (EML). These languages enable the modeling of instructional practices following a process-based approach, similar to a workflow language. Therefore, the units of learning involve the entities and dependencies that participate during instruction, namely: actors (e.g. learners, tutors), data, applications and services, tasks, process, etc. An important part of such units is made up by the learning environments where existing services and applications are integrated. This paper is concerned with the description of an architecture that involves Web services ideas and specifications to satisfy the requirements of this modeling, focusing mainly on the provision of the learning environments.
- KonferenzbeitragRepresenting generalization/specialization in XML schema(Enterprise modelling and information systems architectures, 2005) Al-Kamha, Reema; Embley, David W.; Liddle, Stephen W.XML is an effective universal data-interchange format, and XML Schema has become the preeminent mechanism for describing valid XML document structures. Generalization/specialization and its constraints are fundamental concepts in system modeling and design, but are difficult to express and enforce with XML Schema. This mismatch leads to unnecessary complexity and uncertainty in XML-based models. In this paper we describe how to translate various aspects of generalization/specialization from a conceptual model into XML Schema. We also explore what needs to be added to XML Schema to handle the other aspects of this fundamental modeling construct. If XML Schema were to include our proposed constructs, it would be fully capable of faithfully representing generalization/specialization, thus reducing the complexity of the XML models that rely on generalization/specialization.
- KonferenzbeitragFrom reference model to component model(Enterprise modelling and information systems architectures, 2005) Albani, Antonia; Zaha, Johannes MariaStable component models are an essential prerequisite for developing customer-individual business applications. Thereby the information for the identification and specification of their components is gained from domain models. Reference models constitute a potential source for building enterprisespecific domain models. Based on the analysis of existing reference models, this article shows how information available through reference models can be used for the development of stable component models. The derivation of information required for the identification and specification of reusable business components is discussed using example reference modelling techniques. Additionally, potential extensions of existing reference modelling techniques are shown.
- KonferenzbeitragEconomic reflections on managing web services using semantics(Enterprise modelling and information systems architectures, 2005) Wolff, Frank; Oberle, Daniel; Lamparter, Steffen; Staab, SteffenIn Web Services Management different approaches are discussed. In this paper we analyse three options for Web Service Management: a) Web Services standards descriptions and tools (WS*), b) Semantic-supported and c) Automatic semantic Web Services Management. For the analysis of the differences we identify a number of use cases and investigate the information required for the management of Web Services. The three discussed options result in varying processes with considerable differences in the work efforts. As they involve different levels of investment which only repay on a number of similar WS- applications the discrimination between them is not straightforward. A number of factors must be included in the analysis. Based on the cost arguments and the actual status of standards we consider Semantic-supported management of Web Services to be the most promising option for near future.