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One distinguishing feature in terms of national curriculum revisions is the emphasis on invention education in the subject of technology. This study investigates how South Korean middle school students perceive inventors. A manufactured tool for testing and a checklist for evaluating images of inventors were created to assess drawings of 115 8th grade students. The final 108 surveys (from 52 male and 56 female students) were analyzed, and the results were quite similar to those of prior studies that examined how students picture scientists. This research confirmed that students had stereotypical images of inventors. Stereotypical elements that were not depicted in prior studies were also discovered. For example, tools such as spanners, hammers, and screwdrivers, which are used for building and fixing things, were proposed as symbols of research by students. Overcoming such stereotypical representations requires improving stereotypical images of inventors as they are presented in photos and figures of textbooks, developing and implementing educational programs that introduce relevant images of inventors, and changing teachers' recognition. [ABSTRACT FROM AUTHOR]

In wafer polishing pad surface plays a crucial role in the polishing process. With the increase of friction time between pad and wafer, the pad becomes flattened or glazed with particles clogging the pores of the pad and forming a layer of slurry residue and wafer particles, leading to changes of COF, material removal rates and higher defects on the wafer surface. Thus, this study aims to determine the correlation between pad surface deformation, slurry adhesive rate and Coefficient of friction (COF) during friction between felt pad and single -crystal silicon, to analyze the relationship between pad condition and COF. The real-time COF between felt pad and single-crystal silicon wafer are tested which are sorted in groups depending on various loads and oscillation frequencies and surfaces of felt pads measuring by Scanning electron microscope (SEM) are compared. The correlation between pad surface deformation and abrasive adhesion and COF is evaluated through analyzing the experiment results. [ABSTRACT FROM AUTHOR]