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...ordination environment) project, we are designing and evaluating a web-based multi-tier federated system, intended as a scalable infrastructure for a globally distributed federated database of...online gateway to the distributed catalogue. this paper outlines our design and design rationale, explaining how our multi-tier federated approach makes maintenance of a consistent classification easier. we present...
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...this paper, we describe the design and implementationof a self-manageable multi-tiered infrastructure tosupport web-based scientific simulations. this infrastructuredemonstrates not...configuring, self-healing,self-protecting and self-optimizing. a scientificsimulation program, nomsim (natural organic mattersimulator), is used to demonstrate the effectiveness of thisinfrastructure....
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...in this paper, we propose a data placement advisor (dpa) and load balancing strategies for multi-tiered database systems. built on top of the mqta, dpa recommends mqts and advises placement strategies for minimizing the response time for a query workload. to demonstrate the benefit of the data placement advising, we...
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...spn) models while an exergy-based lifecycle assessment (lca) approach is used for quantifying sustainability impact. the approach is demonstrated on real life data center power infrastructure architectures. five different architectures are considered and initial results show that quantification of sustainability impact provides important information to a data center designer in evaluating availability architecture choices....
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...from the user's point of view. this environment, based on a multi-tier architecture, has been developed following a state of the art software engineering process...architecture) the pac-amodeus model, (a multi-agent based model for interactive systems architecture) and the unified process (up) to guide the whole life-cycle of the project....
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...ful electronic products. the envelope of the user group for computer interaction is stretching to incor- porate a wide range of people and abilities. designers can no longer rely on their target user coping with the intricacies of multi-tasking, multifunction systems of the workplace machine, and must look to the needs of the wider population. the focus...
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Phil Greenwood, Thiago T. Bartolomei, Eduardo Figueiredo, Marcos Dósea, Alessandro F. Garcia, Nélio Cacho, Cláudio Sant’Anna, Sérgio Soares, Paulo Borba, Uirá Kulesza, Awais Rashid
...ao decompositions to sustain
overall system modularity and minimize manifestation of ripple-effects in the presence of heterogeneous changes. this paper
reports a quantitative case study that evolves a real-life application to assess various facets of design stability of oo
and ao implementations. our evaluation focused upon a number of system changes that are typically performed during software
maintenance tasks. they...
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...in this paper, a client/server framework has been developed to enable a dispersed team to accomplish a feature-based design task collaboratively. a manipulation client þ modelling server...facilitate consistent primary information modelling for multiple users and adaptability of the system. based on feature-to-feature relationships, a distributed feature manipulation mechanism has...
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...the user interacts with the system. the main idea is: (1) first of all, we describe the items with the general users opinion about them; and (2) after this, we use...items task measured by half-life utility metric, other approaches based on the following techniques: cognitive filtering, social filtering and hybrid methods...
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...in handheld devices, we propose a methodology for such adaptation based on three tiers: user interface views, data views, and process views. these views provide customization and help balance security and trust. user interface views provide alternative presentations of inputs and outputs. data views summarize data...