层4：业务过程合成或编排层。
Level 4: Business process composition or choreography layer.
此外，业务过程本身也可以是“合成”事件的源，而这些事件又可以反过来反馈到事件处理系统。
Additionally, business processes could themselves be the source of "synthetic" events which can in turn feed back into the event processing system.
SOA的一个抽象观点将它描述为与业务过程结合在一起的合成服务的部分分层架构。
An abstract view of SOA depicts it as a partially layered architecture of composite services that align with business processes.
通过组合这些公开的服务到合成的应用程序，就可以支持业务过程流。
Business process flows can be supported by a choreography of these exposed services into composite applications.
ProcessServer提供丰富的集成功能，可以把各种业务服务和资产组合成优化的业务过程，见图1。
Process Server offers rich integration capabilities to incorporate various business services and asserts into optimized business processes running on it, as shown in Figure 1.
采用数据包络分析法(DEA)结合成本动因理论，根据生产过程中消耗的各种业务量估计制造费用。
In this paper Data Envelopment Analysis (DEA) and cost driver theory are combined to estimate the manufacturing overhead according to all kinds of activities and resources used in production.
然而，这种基于流程的合成语言缺乏在合成过程中使用由不同的业务规则引擎管理的业务规则的能力。
Such process-based composition languages lack the ability to use business rules managed by different business rules engines in the composition process.
在此模型的基础上，着重对自相似业务流合成过程的性能和行为特性进行了大量的实验和分析。
Based on the model, the article carries out a large set of experiments and research about the behavior of the synthesized self-similar traffic how to aggregate.
在此模型的基础上，着重对自相似业务流合成过程的性能和行为特性进行了大量的实验和分析。
Based on the model, the article carries out a large set of experiments and research about the behavior of the synthesized self-similar traffic how to aggregate.
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