Then following reality constituent of engine and connecting component interface , a nonlinear signal cylinder engine model has been created , though fire interval and fire order , a control - oriented four cylinders engine is build . following dynamometer is seen as load , performance of engine is simulated and researched under the condition of constant torque and speed , validation of the math and simulation model have been confirmed by comparison result between simulation with test result of engine performance simulation software dyno 按照发动机的实际组成，根据各部件的接口类型连接模型库中的部件，建立了单缸发动机非线性模型，在此基础上，依据发动机实际发火间隔和顺序，建立了面向控制的四缸汽油机模型，并以测功器为负载，通过恒转矩和恒转速方式进行了发动机性能仿真和研究，仿真结果和发动机动力性能仿真软件dyno测试结果的对比验证了数学模型和仿真模型的正确性。
At the same time , scholars found some deficiencies of the object oriented framework , such as " excessive proliferation " , " fragile base class " , implicit architecture " and etc . combining the research practice in the national 863 project - " domain oriented application framework and component technology " , the author have done some deeper study on the concept , structure and development methods of framework while studying the software component . accordingly this paper put forward the idea of adopting the component - based framework , that is the developer can transfer the object oriented framework into the component - based framework through replacing overloading of method in component interface . the latter is more flexible and easier to be used than the former 本文结合作者在北京大学参加国家863项目“面向领域的应用框架和构件技术”的研究工作实践，在对软件构件进行研究的同时，对框架的概念、构造以及开发方法等相关问题进行了较为深入的研究，从而提出了采用基于构件的框架的思想，即将基于继承的面向对象框架通过用构件接口中方法的调用来替代对象类中方法的重载，转换成为基于构件组装的框架，使得框架更加灵活，更加易于使用。
Next , it describes issues and challenges in testing component - based software , and proposes a component specification - based test model for component - based software . the component specification contains component interface ' s syntax , semantics and interacting and so on , which is necessary in order to fully use the component and understand its behavior 本文提出的基于组件规格说明的测试模型主要分析了两个方面的问题： 1 )描述组件及其交互的规格说明方法2 )基于组件的规格说明对组件进行测试其中第一个方面是组件开发和测试的基础。
Method permissions are defined in the deployment descriptor as a binary relation from the set of security roles to the set of methods of the home , component interface of the session , and entity beans , including all their super interfaces including the methods of ejbhome and ejbobject interfaces , and or ejblocalhome and ejblocalobject interface 在部署描述符中将方法许可定义为一种二元关系，这种关系是从安全性角色的设置到home方法、 session的component接口以及实体bean的设置，其中包括所有的超类接口（包括ejbhome和ejbobject接口的方法，和/或ejblocalhome和ejblocalobject接口） 。
3 ) discuss real - time data manipulate in power unit and definition of data accessing component interface ; design and realize distributed real - time database system in power unit ; realize heterogeneous data mutual - operation based on com / dcom with delphi ; analyze security in power unit data processing . through the research of this project , having accumulated experience for designing platform of distributed heterogeneous data real - time manipulate 探讨了电力生产运行实时数据操纵及数据访问组件接口定义；深入分析了电厂分布式实时数据库系统的设计与实现；探讨了基于com dcom的异构数据互操作的程序实现过程及应用实例；分析了电力生产运行实时数据处理的安全性。
This paper also analyses several component model : javabean , ejb , com + , ccm . the different meaning of component interface , different implementation of component and different composition methods in these component model are discussed . basing on this technology , a visual composition environment for javabean is designed and developed 本文分析了几种主流的构件模型： javabean 、 ejb 、 com + 、 ccm ，分别研究了这些模型中构件接口的含义、构件的实现方法、构件的组装方式，并且设计和实现了一个javabean构件的可视化组装环境。
