Since the new Curriculum Reform was carried off, there has been a lot of research on teaching mode of programming in high school. On the basis of the exploration of the potentials if designing a teaching mode with the Scratch Graphical Programming Language, this paper builds a situational teaching mode of programming in high school with Scratch. This teaching mode first design a programming learning situation which is familiar by students because of its close connection to the students' daily life with Scratch for student through the analysis of the common elements between the situation and the concept of programming. Then guide students learning in the situation, and transfer back to the traditional programming environmental after he understand the content of concept. This teaching mode can arouse the students' interests of learning; promote the students' learning transfer ability. Ultimately this teaching mode can help students better understand algorithm programming and established their Computational thinking. Both of them play a significant positive role in developing students' logical thinking ability and their ability in solving practical problem.
Efficient algorithms for scheduling the resources to successfully execute the tasks submitted by the users are of great importance in dynamic environments like Grid. In this paper, a grid scheduling is proposed using Ant Colony Optimization(ACO) algorithm and Fuzzy Reputation(FR) Aggregation to improve the decision of scheduling. Empirical results show that this method can improve the velocity of execution by taking advantage of historical information and nodes' information. The using of our Fuzzy Reputation-based ACO(FR_ACO) for the grid scheduling has been found to be efficient and effective in allocating tasks to proper resources.2009 International Joint Conference on Computational Sciences and Optimization 978-0-7695-3605-7/09 $25.00
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