着重研究了建模技术和自顶向下的设计方法，并将它们和装配模型有机的结合起来，建立基于特征的自顶向下建模系统。
The main work is stated as follow:(1) After researching the technology of modeling and the method of Top-down design, the thesis designs a feature-based modeling with Top-down design.
业务流程管理(Business Process Management,BPM)是基于流程的方法，通常以业务流程和用例的自顶向下建模为基础。
Business process management (BPM) is a process-based approach, usually arising from a top-down modeling of business processes and use cases.
用于用例建模的方法可以视为SOA设计的自顶向下方法，服务操作基于所需的场合进行标识。
The approach to use case modeling can be considered a top-down approach for SOA design, where service operations are identified based on where they are needed.
一个比较明智的手段应该是首先按照自顶向下来做，接下来进行目标服务建模，最后是自底向上的现有资产的遗留分析。
A more judicious approach would be to first do top-down, then goal-service modeling, and finally bottom-up legacy analysis of existing assets.
这个过程由域分解、现有资产分析和目标服务建模的自顶向下、自底向上、中间向外技术的联合组成。
This process consists of a combination of top-down, bottom-up, and middle-out techniques of domain decomposition, existing asset analysis, and goal-service modeling.
中间向外视图由目标服务建模组成，来验证和发现自顶向下或自底向上的服务鉴别手段中没有捕捉到的其他服务。
The middle-out view consists of goal-service modeling to validate and unearth other services not captured by either top-down or bottom-up service identification approaches.
自顶向下分析(通过流程建模)。
自顶向下方法：在IBM面向服务的建模方法(Service Oriented ModelingApproach,SOMA)等自顶向下方法中，将通过使用业务分析对服务进行标识和优先排序。
Top-down approach: in a top-down approach, such as IBM service Oriented Modeling approach (SOMA), services are identified and prioritized using business analysis.
我们对该系统采用自顶向下的方法进行分析、设计和建模，而采用自底向上的方法进行开发和实现。
We analyse, design and build the model of this system top-down and implement this system bottom-up.
我们对该系统采用自顶向下的方法进行分析、设计和建模，而采用自底向上的方法进行开发和实现。
We analyse, design and build the model of this system top-down and implement this system bottom-up.
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