Science festivals have been reported as an effective way to communicate science between scientists and the public; however, only a few studies have examined systematically and consistently how the ...festivals effect the public’s conceptions of science. Moreover, few studies about science festivals for special education students are conducted. This study is based on findings from five years of reflective writings and drawings on Seullim Science Festivals collected by the Busan Institute of Science Education in Korea. Seullim Science Festival aims to give opportunities for Special Education students to engage in a variety of science experiments and to enjoy the basic rights of science for all students. The rich qualitative data were analyzed using a ground theory and categorized by the themes. The findings presented in this paper show the impressions of the special education students on the festivals and their pride in being a participating member. Additionally, the festivals gave opportunities for non-special education students to become more insightful understanding to special education students and to engage in science. The authors of the current study hope other science festival organizers and science educators find the information useful.
An X-ray pixel detector with photon counting technique for digital X-ray imaging was designed and developed. Si detector was fabricated starting from 5
in., FZ-refined, 620
μm-thick, 〈1
1
1〉 ...oriented, n-typed silicon wafer with high resistivity of 6000–12,000
Ω
cm. Readout front-end, which consists of the preamplifier, comparator, and bias circuits including the band-gap reference circuits, was designed and fabricated using 0.25
μm-triple-well CMOS standard process. In detector, the several types of guard-ring structures were tested. The biased p-type guard ring showed more reasonable results in the leakage current and breakdown voltage. The experimental results for the readout chip prove that its functionality is correctly operated up to 100
mV, 2.5
M events/s. In radiation experiment under irradiation of
60Co at dose rate 10
krad/h the measurement indicate that the band gap reference generator (BGR) circuits work up to 240
krad and the maximum variation of output voltage is 0.4% (peak-to-peak) of operational voltage at the range of 0–240
krad. It cannot lead to any critical problem for use in its operation.
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