Saturday, January 28, 2006
Wednesday, January 25, 2006
An Estimable Professor,Meng Er dong
The man in the photo is the professor of Beijing University, whose name is Meng Er dong. And the girl beside him is his daughter.
Professor Meng is an estimable people. In academic research, he study the Chinese Language, and he has an excellence achievement on it. Professor Meng assit the work of education of the Shi Hezi University initiatively, during these dates he was found to have a cancer. But after 3 surgeries, he still persist on his reasearch and teach his student.
Friday, January 06, 2006
Coupling(good to bad)
- Data Coupling
- Stamp Coupling
- Control Coupling
- Common Coupling
- Content Coupling
Cohesion
- Functional Cohesion
- Sequential Cohesion
- Communicational Cohesion
- Procedural Cohesion
- Temporal Cohesion
- Logical Cohesion
- Coincidental Cohesion
Review acts 2.3
Express Requirements
* Static Descriptions─ specify objects and their relationships with each other
* Dynamic Descriptions─ specify states and transitions between states over time
Static Descriptions
* Indirect Reference
* Recurrence Relations
* Axiomatic Definition
* Expression as a Language
* Data Abstraction
Dynamic Descriptions
* Decision Tables
* Functional Descriptions and Transition Diagrams
* Event Tables
* Petri Nets
* Object-oriented specification
* Static Descriptions─ specify objects and their relationships with each other
* Dynamic Descriptions─ specify states and transitions between states over time
Static Descriptions
* Indirect Reference
* Recurrence Relations
* Axiomatic Definition
* Expression as a Language
* Data Abstraction
Dynamic Descriptions
* Decision Tables
* Functional Descriptions and Transition Diagrams
* Event Tables
* Petri Nets
* Object-oriented specification
Review acts 2.2
Approaches to Elicit Requirements
- Investigating Documents (Hard Data)
- Interviewing
- Questionnaires
- Observation
Review acts 2.1
Process Models:
- Waterfall Model
- Waterfall Model With Back Flow
- Waterfall Model With Prototyping
- Prototyping Model
- V Model
- The phased development model
- The spiral Model
Thursday, January 05, 2006
Review acts.1.3
Types of maintenance
- Corrective: maintaining control over day-to-day functions
- Adaptive: maintaining control over system modifications(highest)
- Perfective: perfecting existing functions
- Preventive: preventing system performance from degrading to unacceptable levels
- Redocumentation: static analysis adds more information
- Restructuring: transform to improve code structure
- Reverse engineering: recreate design and specification information from the code
- Reengineering: reverse engineer and then make changes to specification and design to complete the logical model; then generate new system from revised specification and design
Wednesday, January 04, 2006
Tuesday, January 03, 2006
Review acts.1
Soft Engineering
Chapter 1 Why software engineering?
Chapter 1 Why software engineering?
- What is software?
programes and associated documents such as requirements, design models and user manuals. - Software engineering is an engineering discipline which is concerned with all aspects of software production.
- Essential product attributes: maintainbility,dependability,efficiency and usability.
- Basic activities in software process: software specification,devlopment,validation and evolution.
- Methods: suggestions,notations,rules and design guidelines.
Technorati Tags: SoftEngineering
