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2015 개정 교육과정에 따른 고등학교 공통영어교과서 문화 내용 분석
권정혜 ( Kwon Jeong Hye ),임정완 ( Lim Jeongwan ) 대한언어학회 2018 언어학 Vol.26 No.3
The purpose of this paper is to investigate the topics and cultural contents in Korean High School English textbooks currently authorized by the national curriculum revised in 2015. A total of 11 authorized High School English textbooks are carefully examined, focusing on the topics and cultural contents of the main texts, for four categories: 1) the core competencies of the English curriculum revised in 2015, 2) the cultural topics, 3) the cultural background countries, and 4) the types of learning activities. The results of the study indicated that: First, the key competencies were distributed relatively evenly throughout all textbooks, and the most frequently introduced capability was civic competency. Second, among 19 cultural topics, the most common was general culture in these textbooks. Third, regarding the nationalities related to cultural background, native English cultures showed the highest distribution. Finally, almost all of the textbooks presented information retrieval activities and communication activities, but only some of them had hands-on activities. Based on these findings, the study provides pedagogical implications for cultural teaching and learning in English textbooks in Korea.
Lee, Hyun Cheol,Koo, Bon Tack,Choi, Chang Il,Park, Chang Su,Kwon, Jeongwan,Kim, Hong-Suk,Chung, Heejun,Min, Chul Hee The Korean Association for Radiation Protection 2020 방사선방어학회지 Vol.45 No.3
Background: Radiation portal monitors (RPMs) involving plastic scintillators installed at the border inspection sites can detect illicit trafficking of radioactive sources in cargo containers within seconds. However, RPMs may generate false alarms because of the naturally occurring radioactive materials. To manage these false alarms, we previously suggested an energy-weighted algorithm that emphasizes the Compton-edge area as an outstanding peak. This study intends to evaluate the identification of radioactive sources using an improved energy-weighted algorithm. Materials and Methods: The algorithm was modified by increasing the energy weighting factor, and different peak combinations of the energy-weighted spectra were tested for source identification. A commercialized RPM system was used to measure the energy-weighted spectra. The RPM comprised two large plastic scintillators with dimensions of 174 × 29 × 7 ㎤ facing each other at a distance of 4.6 m. In addition, the in-house-fabricated signal processing boards were connected to collect the signal converted into a spectrum. Further, the spectra from eight radioactive sources, including special nuclear materials (SNMs), which were set in motion using a linear motion system (LMS) and a cargo truck, were estimated to identify the source identification rate. Results and Discussion: Each energy-weighted spectrum exhibited a specific peak location, although high statistical fluctuation errors could be observed in the spectrum with the increasing source speed. In particular, <sup>137</sup>Cs and <sup>60</sup>Co in motion were identified completely (100%) at speeds of 5 and 10 km/hr. Further, SNMs, which trigger the RPM alarm, were identified approximately 80% of the time at both the aforementioned speeds. Conclusion: Using the modified energy-weighted algorithm, several characteristics of the energy weighted spectra could be observed when the used sources were in motion and when the geometric efficiency was low. In particular, the discrimination between <sup>60</sup>Co and <sup>40</sup>K, which triggers false alarms at the primary inspection sites, can be improved using the proposed algorithm.