scholarly journals User-Controlled Dynamic Access Credential Enrichment for Run-time Service Selection

2012 ◽  
Author(s):  
Christoph Fritsch ◽  
Gunther Pernul
Keyword(s):  
Service Selection ◽  
Time Service ◽  
Run Time

A MDP-Based Adaptive Decision-Making Method: Dealing with Run-Time Service Uncertainties

2014 ◽  
Vol 36 (2) ◽  
pp. 297-309
Author(s):  
Zhong-Jie WANG ◽  
Wei ZHENG ◽  
Xiao-Fei XU ◽  
Dian-Hui CHU
Keyword(s):  
Decision Making ◽  
Time Service ◽  
Run Time ◽  
Adaptive Decision Making

Dynamic Transaction Aware Web Service Selection

2014 ◽  
Vol 23 (03) ◽  
pp. 1450004 ◽  
Author(s):  
Kanchana Rajaram ◽  
Chitra Babu ◽  
Arun Adiththan
Keyword(s):  
Web Service ◽  
Service Selection ◽  
Dynamic Selection ◽  
Web Service Selection ◽  
Composite Web Service ◽  
Requirements Change ◽  
Selection Approach ◽  
Internet Environment ◽  
Run Time ◽  
The Impact

Web service composition, that recursively constructs a composite web service out of the existing services based on a business workflow has been acknowledged as a promising approach to meet the user demands, whenever a single service alone cannot fulfil the needs. In view of frequent failures in the internet environment where the composed service is executed, reliability of the composed service must be ensured. The reliability is determined by the behavioral or transactional properties of component services. The component services for each activity of the workflow must be selected based on their behavior so that their execution results in a consistent termination. Service selection must happen at run-time in order to consider the services available in a service registry at the time of execution. Towards this need, a dynamic transaction aware web service selection approach is proposed in this paper. Further, whenever user requirements change, a long running transaction must be interrupted and cancelled which is not addressed by any of the existing works. Hence, service cancellability property is proposed in this paper and incorporated in the dynamic selection approach. The overhead of the proposed run-time selection approach is assessed and the impact of increased services on its performance is also measured.

Compiler-Aided Run-Time Performance Speed-Up in Super-Scalar Processor

10.28945/3391 ◽  
2009 ◽  
Author(s):  
Moshe Pelleh
Keyword(s):  
Embedded Systems ◽  
Embedded System ◽  
General Purpose ◽  
Experimental Results ◽  
Medium Size ◽  
Organic System ◽  
Software Application ◽  
Organic Systems ◽  
Special Cases ◽  
Run Time

In our world, where most systems become embedded systems, the approach of designing embedded systems is still frequently similar to the approach of designing organic systems (or not embedded systems). An organic system, like a personal computer or a work station, must be able to run any task submitted to it at any time (with certain constrains depending on the machine). Consequently, it must have a sophisticated general purpose Operating System (OS) to schedule, dispatch, maintain and monitor the tasks and assist them in special cases (particularly communication and synchronization between them and with external devices). These OSs require an overhead on the memory, on the cache and on the run time. Moreover, generally they are task oriented rather than machine oriented; therefore the processor's throughput is penalized. On the other hand, an embedded system, like an Anti-lock Braking System (ABS), executes always the same software application. Frequently it is a small or medium size system, or made up of several such systems. Many small or medium size embedded systems, with limited number of tasks, can be scheduled by our proposed hardware architecture, based on the Motorola 500MHz MPC7410 processor, enhancing its throughput and avoiding the software OS overhead, complexity, maintenance and price. Encouraged by our experimental results, we shall develop a compiler to assist our method. In the meantime we will present here our proposal and the experimental results.

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