Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

For many companies, the Internet has revolutionized the relationship they have with their customers concerning costumer service. The use of Information Technology in regard to Internet as a media has provided companies with the opportunity to build customer Databases in order to target their customers individually. The airline industry was one of the first pioneers to use the full potential of Internet to improve customer relations and its profits which we aim to investigate in greater detail in our thesis.Our thesis answers the question on how Scandinavian Airlines' (SAS) Eurobonus department uses their website to create valuable and profitable relationships with SAS loyalty club members through direct marketing. In order to answer our research question, three key informants have been interviewed - each representing different sub departments at Eurobonus; service and support, IT and marketing. Our results were that the Eurobonus department use direct marketing methods by sending customized e-mail offerings to target specific customer, using their customer Databases.

The purpose of this essay is to examine how high school students (age 13 to 19) search for information on the web and in Databases. Furthermore, it aims to look into how critical of sources they are. The questions asked was: how the students search for information in digital media? Which kind of sources do the students use? How they evaluate the information they find? Do they get any education in information retrieval and source evaluation? To answer these questions students were interviewed in groups about their information retrieval behavior. Furthermore two school librarians were interviewed about their experience of the students? information retrieval.During the interviews it was clear that the students had received quite sparse instructions on the subjects of information retrieval and criticism of the sources.

This essay is a survey of thirteen user studies performed in the field of image retrieval. The purpose is to try to distinguish principles that should be kept in mind when wanting to make image Databases available for a wide and varied group of users. The essay tries to answer two questions, namely: Are there any results in accordance among the different studies? What in the user studies should be considered when it comes to how content description, interface and functions for searching can be designed when creating systems for image retrieval? Each study is first reviewed on its own, and then a comparative analysis of all the studies is carried out. Derived from the result of this analysis, the conclusion is presented in the form of a row of suggestions to which aspects are to be suitably included in the design of image Databases.

To reach objectives within EU?s Habitatdirective and the national environmental objectives, more information about semi-natural pastures is required. The expression semi-natural pasture is used for pastures that during the latest time are uncultivated and unfertilized. Semi-natural pastures are important in many respects for example to conserve the biodiversity and for our cultural history. The aim of my study was to compile and calculate the area of semi-natural pastures by use existing sources of information.

For many companies, the Internet has revolutionized the relationship they have with their customers concerning costumer service. The use of Information Technology in regard to Internet as a media has provided companies with the opportunity to build customer Databases in order to target their customers individually. The airline industry was one of the first pioneers to use the full potential of Internet to improve customer relations and its profits which we aim to investigate in greater detail in our thesis.Our thesis answers the question on how Scandinavian Airlines' (SAS) Eurobonus department uses their website to create valuable and profitable relationships with SAS loyalty club members through direct marketing. In order to answer our research question, three key informants have been interviewed - each representing different sub departments at Eurobonus; service and support, IT and marketing. Our results were that the Eurobonus department use direct marketing methods by sending customized e-mail offerings to target specific customer, using their customer Databases.

Due to the wide usage of different Databases administrated by the Swedish government to keep control over its citizen?s the issue has arisen concerning if this information is subject for other purposes then originally acknowledged. Executives induced in recruitment for labour has over the years extended their need for information accumulated by these systems. Especially data from the criminal records registry are now being used as a normal step in the employment process among a vastly growing spectrum of enterprises and businesses all over the country. This thesis aims to illuminate the subject by grasp to what extent the described behaviour can be considered legally accepted according to the law or if these actions are inflicting with the foundational juridical principles that has to be ensured by the Swedish government due to our constitutional law.A strict jurisprudential method has been applied throughout the entire thesis to ensure the reliability of the results. The diversity of sources has gently been put together to assure the overall quality.

This thesis deals with tactics for information seeking in electronic Databases. An important aspect is knowledge of the relative value of different subject access points. The method used here is literature studies. Nineteen empirical studies are described and analysed with the purpose to compare the relative value of different subject access points. The studies examined compare the relative value of subject access points in relation to each other or in relation to different scientific disciplines.

Background. With the mental health care reform 1995, the long-term mentally ill patients were meant to be integrated in the society. Instead, they became ?deported? to mental health care. Aim.

During the last years the need for real-time database services has increased due to the growing number of data-intensive applications needing to enforce real-time constraints. The COMponent-based Embedded real-Time database (COMET) is a real-time database developed to meet these demands. COMET is developed using the AspeCtual COmponent-based Real-time system Development (ACCORD) design method, and consists of a number of components and aspects, which can be composed into a number of different configurations depending on system demands, e.g., Quality of Service (QoS) management can be used in unpredictable environments. In embedded systems with requirementson high up-time it may not be possible to temporarily shut down the system for reconfiguration. Instead it is desirable to enable dynamic reconfiguration of the system, exchanging components during run-time.