A pedagogical Web service-based interactive learning environment for a digital filter design course: An evolutionary approach

Wen Hsiung Wu, Wei Fan Chen, Tsung Li Wang, Te Jen Su

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The course of digital filter design in electronic/electrical engineering involves complicated mathematical equations and dynamic waveform variations. It is a consensus among educators that using simulation tools assist in improving students' learning experiences. Previous studies on system simulation seemed to lack an appropriate approach to design such a course. Few emphasized the design of an interactive learning environment by using an evolutionary approach. This study integrated the design concept of an evolutionary approach and Web service-based technology into a simulation system entitled Pedagogical Web Service-Based Interactive Learning Environment (PEWSILE) was introduced. The PEWSILE system contained two interactive learning environments-a simple system and an advanced system. It offered a total of six pedagogical Web services. The simple interactive learning environment included text/color-based services, and text/color/diagram-based services. The advanced interactive learning environment included batch-based, interval change-based, comparison-based, and scroll bar-based services. The study also assessed the students' performance in six pedagogical Web services covering interaction and overall use, usefulness, and intention to use through a questionnaire survey and subsequent interviews. Three significant findings were reported. For example, in the advanced interactive learning environment, the designs of interval change-based and comparison-based services make it easier to observe differences in the outcome of parameter change, while batch-based services lacks the element of waveform comparison. In sum, the findings in this study provide helpful implications in designing engineering educational software.

Original languageEnglish (US)
Pages (from-to)423-433
Number of pages11
JournalComputer Applications in Engineering Education
Issue number3
StatePublished - Sep 1 2010

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Education
  • Engineering(all)


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