Auflistung nach Autor:in "Moore, Ronald"
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- KonferenzbeitragAdapting eFinanced web server farms to changing market demands(INFORMATIK 2003 – Innovative Informatikanwendungen, Band 1, Beiträge der 33. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 2003) Moore, Ronald; Müller, Achim; Müller, Ralf; Temmen, KlausThe evolution of the eFinance Market presents new and changing requirements on web server farm architecture. Web server farms built during the boom years of the web were designed to provide service to a very large number of users, where each request however placed relatively little load on the system. Further, the requests displayed a large amount of statistical similarity, so that caching mechanisms could be successfully applied. However, as professional eFi- nance tools migrate to web-based ASP technology, and as different companies cooperate to build these tools using the Web Services paradigm, these basic assumptions no longer hold: The number of users decreases, while the demands placed by each user increases. Further, each user places highly specialized demands on the application, decreasing the similarities between different requests. The success of conventional caching techniques drops even further if the web server farm is now called upon to provide XML-based Web Services instead of HTML web pages. This paper analyzes these new requirements on the basis of a case study: We present the design process behind the addition of an On The Fly Calculation Server to IS Innovative Software's Web Server Farm architecture. This new server has been developed to provide advanced financial (MPT) calculations to professional users. The resulting design represents a form of intelligent memory, optimized to minimize the movement of data and thus request latency. The stages in the development of this new server, and the integration of this server into the existing web server farm, are presented.
- mensch und computer 2013 - workshopbandCompositing User Interfaces in Partitioned In-Vehicle Infotainment(Mensch & Computer 2013 - Workshopband, 2013) Knirsch, Andreas; Theis, Andreas; Wietzke, Joachim; Moore, RonaldAutomotive information and entertainment systems have become an integral part of a car's humanmachine interface and already affect a prospective customer's purchase decision. In-Vehicle Infotainment systems combine an increasing number of software-based functionalities of varying importance and purpose on a shared hardware platform. This led to integrated modular architectures to achieve temporal isolation of different classes of applications, developed independently by multiple suppliers. Despite this partitioning on the software level, the user interface has to provide all functionality in a uniform way, blended into the manufacturer's superordinate usage concept. Furthermore, allocation and presentation of graphical content has to respect the car's operating state along with the user's preferences and system interaction. In the following, an approach is presented that enables the integration of segregated and independently rendered graphics into a uniform graphical user interface, while considering a multi-display environment and flexible allocation of different views. Relevant requirements, a prospective architecture, and a prototypical implementation are presented to foster the provisioning of the required computational and graphical power to enable future In-Vehicle Infotainment systems.
- KonferenzbeitragResource management for multicore aware software architectures of in-car multimedia systems(INFORMATIK 2011 – Informatik schafft Communities, 2011) Knirsch, Andreas; Wietzke, Joachim; Moore, Ronald; Dowland, Paul S.With increasing hardware capabilities the demands on the functionality of user centric systems continuously expand. The next generation of automotive embedded systems is going to make use of multicore hardware architectures, which strongly enhances the computational power. This means a movement from concurrent to parallel computing. Although the competition for CPU time will decrease, other resources are not available in multiple instances. This raises the need for a management unit that controls access to resources other than the CPUs. Such a resource manager is able to utilise the capabilities of multicore hardware architectures for component based software systems more predictably. This paper builds a case for a resource scheduler, identifies requirements and provides details of a prototype implementation. As an illustrative example, the domain of automotive multimedia/infotainment systems is used.