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Information systems become more accessible as a service offered to anybody, anywhere, at any time, via almost any device and computing platform. The continuous growth and the heterogeneity of these devices induce diverse user experiences depending on the device and challenge designers to creating methods and tools for engineering usable, yet accessible, information systems. Instead of repeating a...
In today's information-age, databases are at the heart of information systems. Unauthorized leakage of confidential database information, while computed by the associated database applications, may put the system at risk. Language-based information flow analysis is a promising field of research to detect possible information leakage in any software systems. So far, researchers pay little attention...
The execution of business processes generates a lot of data comprising final process results as well as information about intermediate activities, both communicated as events. Automated process execution environments are centrally controlled by process engines that hold the connection between events and the processes they occure in. In contrast, in manual process execution environments, e.g., logistics,...
The design of class models for information systems, databases or programming is a delicate process in which experts of the domain and designers have to identify and agree on the domain concepts. Formal Concept Analysis (FCA) has been proposed for supporting this collaborative work and fostering the emergence of higher level entities and the factorization of descriptions and behaviors. More recently,...
Performance measurement is a knowledge intensive business process and performance measurement systems (PMS) are appropriate tools to collect relevant performance information. Though, the application of many PMS fails. Therefore, there is a vivid debate in the literature about the right design, implementation, and use of PMS. Other contributions describe specific obstacles in different contexts, but...
Businesses are increasingly engaging in inter-organizational collaboration. At the same time, assessing the benefits and the success of an inter-organizational system is still a challenge. Academia and businesses alike struggle with insufficient assessment methods and benefits measurement processes. Our research applies and extends a recently developed framework for the assessment of expected and...
This paper presents two different approaches to visualise information from culture, media and creative industries by using RFID based tracking and identification. Besides the required RFID backend, the paper also introduces the information system built on top of the backend. The first approach is based on passive RFID whereas the second uses active RFID. In particular, the differences in the processing...
This paper presents two different approaches to visualise information from culture, media and creative industries by using RFID based tracking and identification. Besides the required RFID backend, the paper also introduces the information system built on top of the backend. The first approach is based on passive RFID whereas the second uses active RFID. In particular, the differences in the processing...
It is now possible to observe that the advances in technology have led to increased capacity to generate and store huge amounts of data in all areas of knowledge, characterizing a generalized explosion of data. In the area of electric power, the vast amount of data collected by different systems of supervision and control and stored in historical bases, has become a potential source of implicit knowledge...
In this paper, we consider the situation where a fuzzy query is submitted to distributed data sources. In order to save bandwith and processing cost, we propose a technique whose aim is to forward the query to the most relevant sources only. It is assumed that a fuzzy summary of every data source is available, and the approach we propose consists in estimating the relevance of a source wrt to a user...
Internet has become the essential platform for access, processing and dissemination of scientific data and literature. To greatly enhance academic search, a novel academic metasearch engine called e-Scholar is presented in this paper, which is combined with entity extraction techniques to link the relevant data in scientific databases with the literature. We demonstrate a scalable architecture implementing...
This paper considers the complexity of context in mobile Information systems. Personalization is considered with context, context-awareness, mobile systems, and related research including adaptation. The principal design issues are introduced with consideration of proposed solutions and open research questions. This paper posits that the current predominance of location-based context-aware applications...
The main goal of change management is to ensure that standardized methods and procedures are used for the efficient and prompt handling of changes in IT systems, in order to minimize change-related incidents and service-delivery disruption. To meet this goal, it is of paramount importance reusing the experience acquired from previous changes in the design of subsequent ones. Two distinct approaches...
We propose to build an engineering environment for information systems by using metamodels, OCL and symbolic model checkers to manage constraints. Our proposal is based on a definition of constraints as 3D spaces with dimensions corresponding to UML diagrams, constructs, and abstraction levels. We show how such environments can help with engineering quality complex systems by allowing to lift up a...
The proliferation of mobile computing devices and local-area wireless networks has fostered a growing interest in location-aware systems and services. We consider location as prime form of context information. The developed framework joins the concepts of location and user tracking as an extension for a new type of mobile information systems. The framework uses a WiFi network infrastructure to let...
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