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Aims To perform a dosimetric evaluation of four different simultaneous integrated boost whole brain radiotherapy modalities with hippocampus and inner ear avoidance in the treatment of limited brain metastases. Methods Computed tomography/magnetic resonance imaging data of 10 patients with limited (1–5) brain metastases were used to replan step-and-shoot intensity-modulated radiotherapy (sIMRT),...
By setting up wind observing towers in Luoma Lake, Suqian City, the northern part of Jiangsu Province, we carry out a year-round observation, then analyze and assess wind energy resources in this area. The current study shows that yearly average wind speed varies in different directions of the lake due to the differences in landform and physiognomy around Luoma Lake. At the standard height of 10 meters,...
Web composition business process is the choreography of atomic activities and composition activities. To construct data flow and control flow, atomic activities and structured activities such as sequence, switch, flow and loop are formally described based on Petri net analysis. Considering the failure and compensation of composition transaction, compensation activities and sequence that handlers were...
Service compensation is a hot spot in web services research. The existing protocols support compensation in static way or in specific environment. A novel Web services transaction compensation mechanism based on paired Petri net is proposed, which can implement composition compensation dynamically and abstract hierarchy modeling of complicated multi-partners business process. Then process is dynamically...
Since composite Web services are long-lasting, loosely coupled and cross application and administrative boundaries, transaction mechanism is required. So far, the evaluation method about quality of services (QoS) of Web services composition focuses on relaxing some of the ACID(Atomicity, Consistency, Integrity and Durability) properties of transaction model and there is almost no further research...
Web services composition is a good way to construct complex Web software. However, Web services composition is prone to fail due to the unstable Web services execution. Thus, it is necessary to deal with the abstract hierarchical modeling of multi-partner business process. Therefore, this paper proposes a refinement method for failure compensation process of transaction mechanism, constructs failure...
Transaction processing is one of the key technologies that decide whether Web services and its composition services can be widely used. To deal with reliability and consistency of Web services in distributed environment, this paper presents a web services transaction compensation Paired Place/Transition model, and discusses the execution semantics of the sequence and parallel composition compensation...
Long running Web Services composition has weaker notion of atomicity, which makes the traditional ACID mechanism for transaction processing no longer fit for Web Services composition transaction. Therefore, this paper first formally defines Web services composition compensation based on paired Petri net. Then it proposes five composition compensation patterns on the basis of paired Petri net: sequence,...
Since Web service transactions(WST) in its context may require long periods of time to complete, for the reliability of composite Web services executions, A failed WST will affect the execution process. However, the existing approaches have not considered a weaker notion of atomicity based on compensations. Thus we present a composition compensation mechanism based on paired net to implement partial...
It becomes a rapidly growing software developing pattern to create new Web services by composition of existing Web services. Since there are lots of Web services that perform similar or identical function but have different quality of service (QoS), it is essential to choose the proper services to compose the composite Web services that meet userspsila requirements. Because manual composition is inefficient,...
With regard to the failure and cancellation of business logic of Web services composition, we present a composition compensation mechanism based on paired net to implement partial or full compensation of the committed activities. The introduction of this method can accurately construct SCPN and establish agile compensation-triggered mechanism which can satisfy prospective compensation requirements,...
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