• Journal of Magnetics
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• v.19 no.3
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• pp.237-240
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• 2014

For heat-assisted magnetic recording, magnetization reversal probabilities of nano-Pt/MnSb multilayer film with perpendicular magnetic anisotropy under thermal pulse activation were investigated numerically by solving the Landau-Lifshift Gilbert Equation. Magnetic parameters of nano-Pt/MnSb multilayer were used with anisotropy energy of $3{\times}10^5$ erg/cc and saturation magnetization of 2100 G, which offer more than 10 y data stability at room temperature. Scheme of driven magnetic field and thermal pulse on writing mechanism was designed closely to real experiment. This study found that the chosen material is potential to be used as a high density magnetic storage that requires low writing field less than two-hundreds Oersted through definite heating and cooling interval. The possibility of writing data with a zero driven magnetic field also became an important result. Further study is recommended on the thickness of media and thermal pulse design as the essential parameters of the reversal magnetization.

• Journal of Science Education
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• v.36 no.2
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• pp.198-215
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• 2012

Purpose of this study is to clarify the effect of creative science writing for interest of biology and scientific attitude on high school student. Creative science writing is a learning method to enhance comprehension and expression of thinking of science contents related to daily life. 148 students were recruited and divided into two groups, experimental group were experience creative science writing lessons. On the other hand, contrary group were applied interest enhancement lessons excepted creative science writing activity. To investigate the effect of creative science writing, interest check of biology was used, and scientific attitude test was used to understand changes in student's scientific attitude. Experimental group had taught using creative science writing and their awareness of the instruction was analyzed with questionnaire. As a result of this study, the class based on creative science writing was effective in improving high school students' interest in biology and in particular it was helpful in promoting interest in biology and learning of biology. It suggested that the class based on creative scientific writing used a new teaching method unlike existing methods, caused them to have interest in the instruction by making them express their daily life freely not to memorize learning contents, applied learning contents to daily life through many kinds of writings and then enhanced their interest in biology. Indeed, the class based on creative science writing had the positive influence on changes in the scientific attitude of high school students. Since creative science writing is writing one's own idea through extensive thinking based on learning contents, it was effective in arranging the process of thinking and changing their scientific attitude into positive one. Consequently, it was concluded from the above results of the research that the teaching using creative science writing was available as the effective teaching methods to improve high school students' interest in biology and change their scientific attitude into positive one.

• Journal of the Korean Chemical Society
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• v.58 no.6
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• pp.600-611
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• 2014

In this study, we sampled science writing tasks and investigated their frequency of use shown in the chemistry domain from two sets of 18 middle school science textbooks developed under the 2007 Revised National Curriculum(RNC) and the 2009 RNC, respectively. In addition, we categorized the sampled science writing tasks depending on the cognitive process and type of writing and compared with the results obtained from analysis of global issues presented in the science writings. From the textbooks developed under the 2007 RNC, a total of 183 science writing tasks were identified in which 10.17 tasks per textbook and 1.32 tasks per 10 pages were used averagely. A total of 168 were identified from the textbooks for the 2009 RNC. Among them, 9.33 tasks per textbook and 1.23 tasks per 10 pages were used on average. Comparing with these results, the average frequency of use of the tasks per textbook and per ten pages were decreased, respectively. Moreover, the number of science writing tasks were found in each curriculum varied considerably depending on the units and the publishers, and that the writing tasks were mainly arranged in the finale, wrapping up stage. In the analysis of science writing tasks according to the cognitive process, the highest and lowest frequency of use were observed in the category of 'understand' and 'remember', respectively. According to the classification of science writing tasks based on the types of writing, the writings for the information delivery were most used and the highest frequency of use was observed in the category of 'understand' of the cognitive process belonging to 'information delivery'. As for the results of the analysis of global issues, the number of science writing tasks including global issues increased from 21(11.48%) in the 2007 RNC to 33(19.64%) in the 2009 RNC. Furthermore, science writing tasks associated with protection of environment showed the highest frequency of use in the both curriculums, and it was analyzed that the materials of global issues used in the 2009 RNC were much more diverse.

• International Journal of Contents
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• v.15 no.4
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• pp.97-106
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• 2019

EMI (English as a Medium of Instruction) classes are now accepted policy at Korean universities, yet students often struggle with required academic English writings. The present study examined an EMI class that used direct instruction and access to online assistive English writing software. From preliminary analysis, 26 students expressed interest in how an EMI academic writing class could facilitate improved English writing skills. Study participants completed a survey on self-efficacy and learning needs and assignments for an EMI academic writing class. To establish inter-rater reliability, three trained raters assessed the written essays of students prior to and after instructional intervention. Fleiss' Kappas statistics showed moderate reliability. Students' opinions on the use of online software were also analysed. Paired t-test was run on the quality of students' pre- and post-instruction assignments, and there was significant difference in the rated scores. Self-efficacy was found to have moderate positive association with improved post-essay writing scores.

• Journal of the Korean Society of Earth Science Education
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• v.4 no.2
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• pp.166-176
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• 2011

The purpose of this study was to examine the effect of the science gifted children's Science Process Skiils and Creativity development by Scientific Writing Program using Thinking maps. To verify research problem, the subject of this study were third-grade students selected from two classes of an elementary scientific gifted students located in Ulsan : the search group is composed of twenty students who were participated in TScientific Writing Program using Thinking maps, and the other is composed of twenty students (comparison group) who were participated in teacher map based instruction in comparison group. Pro-test showed following results: First, the search group showed a significant improvement in the science process skills compared the comparison group. Second, the search group didn't showed a significant improvement in creativity compared in the comparison group. In conclusion, Scientific Writing Program using Thinking maps was more effective than teaching model using the teacher map on science process skill and creativity.

• Journal of Korean Elementary Science Education
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• v.31 no.2
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• pp.208-215
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• 2012

A creative science writing program was developed, and applied to 2nd grade elementary students. Two 2nd grade elementary school classes in Seoul district were selected for the current study. A Pretest-Posttest Control Group Design was applied. The experimental group adopted the creative science writing program and the control group maintained traditional lectures for 12 classes. TTCT(Torrance Test of Creative Thinking) figural test and a scientific attitude test were conducted on both groups. According to the analysis, TTCT score of the experimental group was significantly higher than that of the control group (p<.01). Among several subscales of TTCT, elaboration and resistance to premature closure was especially improved. Also, scientific attitude scale of the experimental group was significantly higher than that of the control group (p<.01). Among subscales of scientific attitude, the creative science writing program was effective on improving students' open-mindedness, critical mindedness, cooperation, voluntariness, and endurance. Gender was not a factor in the improvement of both students' creativity and scientific attitude.

• Journal of the Korean Chemical Society
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• v.56 no.6
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• pp.759-767
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• 2012

The purpose of this study was to examine the impact of Science Writing Heuristic (SWH) on multiple representations in students' writing and to survey experimental group students' recognition about the use of multiple representations. For this study, Participants of this study were 158 students in 7th grade. 94 students were assigned to the experimental group and 64 students were assigned to the comparative group. The experimental group showed significantly higher mean score than comparative group at utilizing multiple representation in summary writing. Interview analysis indicated that all students who participated in interviews, regardless of solid multi-modal competency, recognized that use of multiple representations with appropriate explanations enable to communicate science information persuasively.

• Journal of The Korean Association For Science Education
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• v.31 no.6
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• pp.931-941
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• 2011

This study aimed to examine the effects of argument-based chemistry laboratory investigations using the Science Writing Heuristic (SWH) approach on students' use and embedding of multimodal representations in summary writing. Participants of this study were thirty-nine freshman students majoring in science education at a National University in Korea. Argument-based chemistry laboratory investigations using the SWH approach were implemented for twenty-three students enrolled in one cohort, and the traditional chemistry laboratory teaching was implemented for 16 students enrolled in the other cohort. Summary writing samples were collected from students before and after the implementation. Summary writing samples produced by students were examined using an analysis framework for examining the use and embeddedness of multimodal representations. Summary writing was categorized into one of verbal mode, symbolic mode, and visual mode. With regard to the embedding of multi-modal representations, summary writing samples were analyzed in terms of 'constructing understanding,' 'integrating multiple modes,' 'providing valid claims and evidence,' and 'representing multiple modes.' Data analysis shows that the students of the SWH group were better at utilizing and embedding multimodal representations in summary writing as they provided evidence supporting their claims. This study provides important implications on pre-service science teacher education.

• Journal of the Korea Convergence Society
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• v.9 no.1
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• pp.41-50
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• 2018

The purpose of this study is to analyze the trends after surveying Korean researches on writing classes of science and engineering college students. In this study, we reviewed the trends of the researches and summarized the fields of the journals. The contents of researches were classified into the general discussion on the science and engineering writing class and the discussion on the contents of education and the teaching methods. The flow of discussion about writing class was developed in detail closely related with characteristics of science and engineering discipline, composition of writing class, educational goal and curriculum of engineering education certification system. A number of researches have proposed contents and methods of education developed through the analysis of textbooks, school and case studies. It is necessary to develop active research on various perspectives and topics such as students, teachers, evaluation, and systems in the future.

• Journal of Science Education
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• v.38 no.2
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• pp.286-301
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• 2014

The purpose of this study is to examine the influence of argumentation for elementary students' scientific writing. Using nine subjects that were comprised of scientific situations and social scientific situations, this study was applied to four 5th grade students utilizing argumentation and scientific writing. The students' scientific writing and argumentation were collected and analyzed based on three domains of scientific writing: scientific thinking, logic, and creativity. The results from this study are as follows. First, the various contents of argumentation positively affected all of the scientific writing domains in post-argumentation scientific writing. Second, the contents of argumentation appeared in the post-argumentation scientific writing as three different forms: 1) Each individual's scientific concepts, claims, and ideas, which were newly mentioned in the process of argumentation, were expressed, 2) Their classmates' claims, grounds and ideas, which were discussed in the process of argumentation, were expressed through internalization, and 3) Expanded ideas, new claims and inferences based on the argumentation were expressed.