• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.16 no.6
• /
• pp.141-155
• /
• 2017

As the use of SNS becomes more active, many people are posting their thoughts about specific events in their SNS in the form of text. As a result, SNS is used in various fields such as finance and distribution to conduct service satisfaction surveys and consumer monitoring. However, in the transportation area, there are not enough cases to utilize unstructured data analysis such as emotional analysis. In this study, we developed an emotional analysis methodology that can be used in transportation by using highway VOC data, which is atypical data collected by Korea Expressway Corporation. The developed methodology consists of morpheme analysis, emotional dictionary construction, and emotional discrimination of the collected unstructured data. The developed methodology was verified using highway related tweet data. As a result of the analysis, it can be guessed that many information and information about the construction and the accident were related to the highway during the analysis period. Also, it seems that users complain about the delay caused by construction and accident.

• Korean journal of communication and information
• /
• v.25
• /
• pp.41-64
• /
• 2004

This study examined the impact of newspaper scale on the use of local government's news releases by local newspapers. Thus, to see the impact, the four local newspapers and the local government's news releases were content-analyzed. Further, through a depth interview, this study tried to understand local journalists' thoughts on using the news releases published by local government. This study hypothesized a negative relationship between the newspaper scale and the degree of the use of news release, between the scale and the dependent rate on the news releases, and proposed a positive relationship between the scale and the writing styles(neutral, negative, neutral, positive). The research results supported the first two hypotheses, and the third partially. Thus, the greater the newspaper scale, the higher the degree of the use of news release by local newspaper. And the greater the scale, the higher the dependent rate on the news releases. In addition, the smaller newspaper in the scale showed more positive and negative writing styles than the larger did. On the other hand, the larger newspaper tend to have more neutral writing style than the smaller did. The interviewee also indicated, in terms of newspaper scale, there was diverse perspectives on the use of news release.

• Journal of the Korean Chemical Society
• /
• v.57 no.1
• /
• pp.115-126
• /
• 2013

In this study, we developed a explicit and reflective scientific inquiry learning program about nature of scientific inquiry, and compared its instructional influences with those of implicit scientific inquiry learning. We also compared students' perceptions of the program. Eighth graders at a middle school were assigned to the treatment and the control groups. The students of the treatment group participated in the program, while those of the control group participated in general scientific inquiry instruction. The analyses of the results revealed that the program was more effective in improving students' epistemological views on scientific inquiry than general scientific inquiry learning. However, there were no statistically significant differences in both test scores of science achievement and enjoyment of science lessons. The students of the treatment group perceived that group discussion on the nature of scientific inquiry was an advantage of the program. However, they still had difficulties in performing group discussion, understanding the nature of scientific inquiry, and writing and presenting their thoughts. Educational implications of these findings are discussed.

• Journal of Science and Technology Studies
• /
• v.14 no.2
• /
• pp.127-164
• /
• 2014

This essay examines the motivations, goals, and assumptions of those who are participating in the appropriate technology movement in contemporary South Korea. In addition to analyzing books, articles, presentation materials, and media reports written by or about the "appropriate technologists," I have interviewed a few of them to hear their thoughts on appropriate technologies as well as inappropriate technologies. They choose to work on appropriate technology out of their good will for people in need, their Christian faith, and their pride in Korea's rapid and successful development. As a result, the appropriate technology movement in Korea does not engage in a critical evaluation of current sociotechnical systems, but instead takes an ethical and paternalistic stance in accepting and improving the given situation. Its apolitical character is effective in drawing a large number of participants, but it also limits their imagination and the movement's potential influence. Moreover, the movement's focus on "the other 90%" leads the participants to frame appropriate technology as something for "them" or "locals" rather than as something for "all of us." This essay concludes by suggesting that the appropriate technology movement in Korea should expand its scope from an ethical pursuit of technology to a political engagement with technology.

• Journal of The Korean Association For Science Education
• /
• v.16 no.4
• /
• pp.340-350
• /
• 1996

Knowledge is composed through the interaction between the concept structure already held by students and their experience, and learning can be said to be the active process of solving the cognitive conflict caused by this interaction. Therefore, this study consists in showing the effective learning method and finding out the elements which the teacher has to own, through examining several forms of pre-conception or mis-conception of the inertia, the force-equilibrium, the action and reaction, the heat, and the electric current, and then finding out their solution and studying student's change in science concepts. For this study, the types of concept on the five above-mentioned materials which students have were examined through the concept-classifying question paper, and the classes to which the class mode for the change of concepts applied, were practised in each different classroom by each different instructor - a professor, a scientist, a teacher, and two students, respectively. And the effect of the teaching strategy based on these classes, and each different instructor' influence on the change of concept in students. were examined. The result of my study is as follows; 1. Students have various types of pre-conception which are different from science concept, and these types of pre-conception tend to last even after learning in class. 2. The thoughts on the correct science concept of the high school third-grade students who learned the physics in the traditional teaching method, and the second grade students who don't learn the physics yet, were nearly equal those of the second grade students by receiving the physics class through the cognitive conflict course were greatly changed especially that students showed the distinct change on mechanics and electric current. 3. Students didn't show the remarkable change of the science concept on the five materials in the four kinds of experimental classes by each different instructor but in the part of mechanics, there was the distinct change between the class by professor and those by the students. This was due to the difference of the authority and the attitude of the concept demonstrator. 1) The authority, the kind attitude, and the responsibility of the expert played an important role in the correct concept-formation of mechanics part - especially in the case of the mis-conception caused by the intuitive belief. 2) In the class by instructor with the democratic teaching method, the change of concept took place more easily, because in his class students could discuss the subject freely, so that they might experience the thought course to give them the confidence on the science concept.

• Journal of The Korean Association For Science Education
• /
• v.30 no.1
• /
• pp.170-180
• /
• 2010

Among the various fields of Earth Science, especially in Astronomy, we often deal with the change of space-time in an abstract way. Thus, making use of 'Concept Sketches'-simplified sketches that represent the main features, principles, processes and interrelationships of the learning content by using some concise explanations, signs and terms could help the students efficiently learn the phenomena of Astronomy. This study's aim was to check its effects and analyze the results of the lessons that included concept sketches and a discussion about the field of Earth Science in high school. The control group took traditional lessons, while the experimental group did a small-group discussion that used the concept sketches. After the lesson, some students were chosen to answer a questionnaire and go through an in-depth interview. The result of the data shows that the small-group discussion lesson that used the concept sketches helped both the high-ranking and low-ranking students to build concepts and was able to attract students' attention. Moreover, the students produced long-term memories of the content learned through the class discussion, which allowed them to exchange their own thoughts and opinions with other students. Most of all, drawing pictures, a familiar activity, appealed to the students, so they took part in the class eagerly.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.30 no.4
• /
• pp.157-173
• /
• 2019

Due to the fact that cognitive authority influences an individual's thoughts so that a given information is perceived as appropriate, people evaluate information based on their cognitive authority. The purpose of the present study is to examine the perception of the cognitive authority of online information sources used by college students to carry out their academic tasks, and to determine whether such perceptions affect the quality assessment of information sources, such as webpages, e-journals, and Wikipedia,. Specifically, we measured how cognitive authority, which were formed by the author, the surface, and the content of an information source influenced its accuracy, usefulness, completeness, and expertise. For this purpose, online surveys were conducted with college students, and 172 valid responses were obtained. Findings indicated that all the characteristics that formed the cognitive authority of an information source had significant impacts on its accuracy, usefulness, completeness, and expertise. The study suggests academic implications that confirm the associations between cognitive authority and credibility of information in the context of online information sources. Furthermore, the study provides practical implications that system developers or operators of information sources need to consider diverse factors that affect their cognitive authority to promote users' trust on the information that they deliver.

• Journal of the Korean Home Economics Association
• /
• v.45 no.1
• /
• pp.63-73
• /
• 2007

Korean children's clothes have unique aesthetic characteristics distinguished from other countries'. Our folk beliefs handed down from ancient times always contained fortune - seeking thoughts and particularly mothers' earnest wishes for the happiness of their children were sublimated into the symbolic beauty of their children's clothes. The present study examined children's clothes in the royal family and among the people for 50 years of the transitional period from the late Joseon Dynasty to modern times, by classifying them into ritual dress for new-born babies, festival dress and everyday dress. Male children's clothes included caps such as Bokgeon(복건), Hogeon(호건) and Gulle(굴레) topcoats such as Durumagi(두루마기), Sagyusam(사규삼) Koija(쾌자) and Jeonbok(전복) and others such as Magoja(마고자), Baeja(배자), Joggi(조끼) and Bajijeogori(바지저고리), Female children's clothes included caps and head ornaments such as Gulle, Jobawi(조바위) and Daenggi(댕기) and others such as Durumagi, Jegori and Chima(치마). What is interesting is that old clothes handed down to the present are mostly boys' and few of them are girls'. This is probably because of the strong preference for boys rather than girls that continued until the end of the 20th century. Ordinary people dressed their new - born babies with simple white clothes until Samchilil (the 21st day) or Baekil (the 100thday) but, for these occasions, the royal family prepared clothes as formal as those for the $1^{st}$ birthday among the public. Rainbow-striped garments were more popular among the public than in the royal family. As rainbow colors were known to Korean people to dispel evil power and bring in fortunes, rainbow - striped garments were essential for the $1^{st}$ birthday and festive days. However, they were seldom used in ordinarytimes, and most boys and girls wore plain jackets and plain topcoats. When children's clothes in noble families were compared with royal family's ones, either handed down to the present or found in old literature, no significant difference was observed in the basic composition of everyday dress. In particular, it was found that Andong Kim's family had dressed their children with very formal dress such as Dopo and Sagyusam. Among children's clothes, the most gorgeous one was that worn on the $1^{st}$ birthday, and those for other occasions or festive days were similar or simpler. Colors, patterns and designs used in decorating children's clothes mostly had the meanings of seeking fortunes for children such as long life, wealth and prosperity.

• The Journal of Korean Medical History
• /
• v.27 no.1
• /
• pp.135-156
• /
• 2014

Through a simple translation and analysis of the "Su$\acute{s}$uta-saṃhit$\bar{a}$(The fascinating tales) S$\bar{u}$trasth$\bar{a}$na(The Introduction)", I have summarized the results of the research into the $\bar{A}$yurveda Herbal theory. 1. The title of chapter 40 is "dravya-rasa-guṇa-vip$\bar{a}$ka-vij$\tilde{n}$anīya(Medcation Taste Nature Effects Digestion)", and it states theoretical knowledge on materia medica. It says that 'matter' is the most important thing, and that it decides the curing effect. Although it does acknowledge the reason behind the doctors that emphasized things like 'taste', it mainly has a critical tone. The difference in philosophies and medical theory can be seen when we compare this to the "Caraka-saṃhit$\bar{a}$", 'theory on taste'. 2. The title of chapter 41 is "dravya-vi$\acute{s}$eṣa-vij$\tilde{n}$anīya(A Discussion on the Characteristics of Materia Medica)", and the contents of the chapter have a similar tone to the thoughts of the S$\bar{a}$mkhya(數論派). All 'matter' was created by the combination of the five elements of earth, water, fire, wind, and ether, and the predominant element makes it have an earth, water, fire, wind, or ether nature. Earth has an unmoving and down going nature, and makes the body strong. Water has an irrigating nature, and moistens the tissue and induces secretion and excretion. Fire has an upward-going nature, and improves sight and complexion. Wind relaxes and dries the body, and makes the mind and body agile. Ether gives flexibility, porosity, and candidness. The title of chapter 42 is "rasa-vi$\acute{s}$eṣa-vij$\tilde{n}\bar{a}$nīya(A Discussion on the Types of Rasa(taste))". "Rasa" is an important concept in $\bar{A}$yurveda. Sometimes it is translated as 'one of the seven types of bodily tissue' and seen as chyle, and sometimes it is seen as the tastes that can be felt with the tongue such as spicy, sweet, sour, bitter, salty, and astringent(澁). Volume 1, chapter 42 of the "Caraka-saṃhit$\bar{a}$" is dedicated to the "types of taste", and in chapter 26, it theorizes the concept of 'taste'.

• Journal of Science Education
• /
• v.44 no.2
• /
• pp.225-239
• /
• 2020

This study aims to analyze the characteristics of reflective thoughts of students during experiments in general physics experiments. The participants were 32 college students, they submitted 10 experiment reports including answers to questions for reflective thinking. The results were as follows: First, students show reflective thinking broadly in the experiment, levels were followed by practical reflection, technical reflection, and critical reflection. Also, they actively accepted the knowledge related to experiments, but were passive in connecting new knowledge and experiences obtained through the experiments or forming new questions. Second, the reflective thinking of students show high correlation with experiments related to prior knowledge or the easy-to-understand process. Third, through the qualitative analysis of open-ended questions, it was confirmed that technical reflection occurs in individual evaluation, practical reflection in group evaluation, and practical reflection and critical reflection in improvement proposal. While the students' reflective thinking were superficial or mainly functional, however, they recursively examined the learning contents and the experimental process concurrently.