TAILIEUCHUNG - Lecture Notes in Computer Science- P87

Lecture Notes in Computer Science- P87:This year, we received about 170 submissions to ICWL 2008. There were a total of 52 full papers, representing an acceptance rate of about 30%, plus one invited paper accepted for inclusion in this LNCS proceedings. The authors of these accepted papers | An Online Theme-Based Collaborative Learning System 419 for generating the raw data used in further analysis steps to compute the chosen indicators. Then the raw data is put into the analysis method and is processed there. After the analysis the high and low level indicators are produced. In the end indicators which are represents by a certain tool constitute the learning portfolios. Moreover for the concrete utilization of the indicator norms can be applied. These norms which define desired values and behaviors are used for meta-cognition or guiding. Fig. 5. Schemes of learning portfolios formation In the system we designed there are three learning activities which are represented in the learning portfolios 1 sharing and using learning resources 2 sharing and using learning fruits 3 interactions and communications in online virtual forums. The indicators in the three kinds of learning activities are described in the case study section. The system by far mainly uses quantitative statistics method to analyze the raw data and represents indicators in learning portfolios with participation diagrams. 3 System Implementation The standard Object-based software engineering methods were adopted to implement the system. The procedures of implementation mainly went thought three phases. Firstly PowerDesigner 12 a powerful visual and easy-to-use enterprise modelling tool was used to create the requirement model with use case and entity-relation diagrams. Secondly PowerDesigner 12 automatically converted the entity-relation model into the class model and efficiently generated the SQL scripts. As we know the class model shows more details of the static system structure than the module architecture does and can be used to generate the code frames which shortens the cycle of development the SQL scripts can be used further to create the target database in MySQL which is an open source relation database management system. Thirdly the programs on Web server Apache were coded

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