For the different requirement of the earlier design and the later design,the observer pattern and the state patten were used respectively,and UML was applied to construct object-oriented model for them.

It is advisable to integrate human resource system with others through distributed observer pattern based on Web Service,for it decreases the coupling between the subsystems and increases the extensibility and maintainability of the whole system.

This paper presents a kind of common design pattern__Observer pattern,and analysis the implementation of Observer pattern in Visual Basic.

<Abstrcat>From the view of component-Oriented methology and software achitechture, this paper discusses the Observer improvement and its achitechture design.

Model Analysis of Teaching Quality by Using Observation Pattern UML-based;

It is proved that a probability is a relation between an event and an observer instead of an attribute of an event.

A viewpoint (Observer) locating arithmetic in Vega is brought out and analyzed in detail in the article.

Three searies of time-space lines are proposed, which represent the motion of sound source, motion of observer and sound propogation in static air respectively.

Objective: Our study was to develop TMA of breast cancer, investigate the role of HER-2/neu, ER, PR in the breast cancer and breast benign lesion and go into the degree of interlaboratory and interobserver agreement when HER-2/neu was evaluated by IHC.