Current mechanical, laser and electronic leveling instruments are sometimes not accurate enough to be used for determining either vertical or horizontal level for level-critical applications. By using an ultrasonic echolocation-based distance meter it is possible to design very accurate leveling instruments for a wide range of applications. This article overviews the accuracy of current levelin...

The concept of yield management for IT infrastructures, and in particular for on demand IT utilities was recently introduced in [17]. The present paper provides a detailed analysis of that model, both in simplified cases where an analytical analysis is possible, and numerically on larger problem instances, and confirms the significant revenue benefit that can accrue through use of yield managem...

Monitoring is an essential process to observe and improve the reliability and the performance of large-scale distributed multimedia (LDM) systems. Monitoring events generated by LDM systems is necessary for observing the run-time behavior of LDM systems and providing status information required for managing such applications. However, correlated events are generated concurrently and could be di...

Nowadays, a large number of planning systems exist. The majority of them are either applicable only to specific domains (domain dependent) or support only plan generation, but not plan execution and supervision. This paper presents Agent Planning Package (APP), a new domain independent planner which facilitates the creation of intelligent agents. Through the use of APP, agents can generate plan...

Data from a process or system is often monitored in order to detect unusual events and this task is required in many disciplines. A decision rule can be learned to detect anomalies from the normal operating environment when neither the normal operations nor the anomalies to be detected are pre-specified. This is accomplished through artificial data that transforms the problem to one of supervis...

It’s a given that ATE test platforms are complex systems. Many HW and SW elements need to be integrated and work together for successful testing solutions. Too often we define a properly working platform within the context of the tools used to test and validate its behavior. Diagnostics, calibration, and special-purpose validation tools are used to prove a platform’s adherence to specifications...

This paper investigates the potential use of problem descriptions to represent and analyse variability in context-aware software products. By context-aware, we refer to recognition of changes in properties of external domains, which are recognised as affecting the behaviour of products. There are many reasons for changes in the operating environment, from fluctuating resources upon which the pr...

The tourism industry is one of the largest industries in the world, and despite recent events that have made its operating environment more complex, the industry continues to grow [Theobald, 2005, Global Tourism, 3rd., Butterworth-Heinemann/Elsevier]. Commensurate to the size of the industry is a growth in the number of students pursuing degree courses in tourism around the world. Despite an in...

in this study, the problem of navigation in dynamic and unknown environment is investigated and a navigation method based on force field approach is suggested. it is assumed that the robot performs navigation in unknown environment and builds the map through slam procedure. since the moving objects' location and properties are unknown, they are identified and tracked by kalman filter. kalm...