• The Journal of the Korea Contents Association
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• v.10 no.11
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• pp.468-475
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• 2010

We survey the effects of robot programming education using web 2.0 on improving problem solving ability. For this, we constructed a robot programming education system using springnote based web 2.0 and taught computer gifted students of D region. Furthermore, we investigated about the problem solving ability when the robot programming education using web 2.0 is executed. In conclusion, the robot programming education using web 2.0 stimulate problem solving ability for learners.

• Journal of the Korean Geotechnical Society
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• v.23 no.11
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• pp.27-37
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• 2007

Downhole seismic method is very economic and easy to operate because it uses only one borehole and simple surface source to obtain the shear wave velocity profile of a site. In this study, automatic shear wave source was developed for efficient downhole seismic testing. This source is motor-spring type and easy to control. It can lessen the labor of operator and the working time. Moreover, it can provide better and repetitive signals for data interpretation. By combining developed automatic source with automatic receiver system, PC based data acquisition system, advanced managing program, and semi-automatic downhole performing system were constructed. Through comparison test with manual source, advantages of automatic source were verified. Constructed semi-automatic downhole testing system including automatic shear wave source was applied to the soft soil site. The applicability and reliability were verified and the importance of automating testing system for obtaining reliable result was emphasized.