• Journal of information and communication convergence engineering
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• v.17 no.1
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• pp.41-48
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• 2019

In recent years, sentiment analysis research has become popular. The research results of sentiment analysis have achieved remarkable results in practical applications, such as in Amazon's book recommendation system and the North American movie box office evaluation system. Analyzing big data based on user preferences and evaluations and recommending hot-selling books and hot-rated movies to users in a targeted manner greatly improve book sales and attendance rate in movies [1, 2]. However, traditional machine learning-based sentiment analysis methods such as the Classification and Regression Tree (CART), Support Vector Machine (SVM), and k-nearest neighbor classification (kNN) had performed poorly in accuracy. In this paper, an improved kNN classification method is proposed. Through the improved method and normalizing of data, the purpose of improving accuracy is achieved. Subsequently, the three classification algorithms and the improved algorithm were compared based on experimental data. Experiments show that the improved method performs best in the kNN classification method, with an accuracy rate of 11.5% and a precision rate of 20.3%.

• Korean Journal of Oriental Medicine
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• v.16 no.1
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• pp.11-17
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• 2010

YiHui(宜彙) is medical book written in 19th century. It's author is known as an intellectual. His pen name is GumLiSanIn(錦里散人). YiHui is a important book to show us medical treatment in Chosun-Korea 19th century. We purposed to analyze contents of YiHui and organize its Historical meanings. For that, we studied about GumLiSanIn. Then we explained contents of each chapter of this book. YiHui - title of book means gathering important treatment. Like that, this book contains a lots of skills and prescriptions origined from classic Chinese and Korean medical books. Many methods of this book are invented by practitioners who played an active part in the folk. Furthermore, its treatments is very simple and its hurbs is getatable to be used easily. Yihui inherits the tradition of Hyangyak that is local herb medicine of Chosun.

• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.967-970
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• 2005

The Music Player MAF Player Format of ISO/IEC 23000-2 FDIS consists of MP3 data, MPEG-7 metadata and one optional JPEG image data based on MPEG-4 File Format. However, the current Music Player MAF format does not allow multiple JPEG image data or timed text data. It is helpful to use timed text data and multiple JPEG images in the various multimedia applications. For example, listening material for the foreign language needs an additional book which has text and images, the audio contents which can get image and text data can be helpful to understand the whole story and situations well. In this paper, we propose the detailed file structure in conjunction with MPEG-4 File Format in order to improve the functionalities, which carry multiple image data and text data with synchronization information between MP3 data and other resources.

• Journal for History of Mathematics
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• v.22 no.4
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• pp.83-96
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• 2009

It is very important to study the history of text books for the present and the future study of text books. In this paper, we study the history of compilation of arithmetic text books on Gwangmu-Yunghee periods in Korea. Also we investigate some arithmetic text books on those periods and introduce some contents and some problems and solutions in those books.

• The Mathematical Education
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• v.41 no.1
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• pp.127-137
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• 2002

Discrete Mathematics is newly introduced into the 7th Elementary and Secondary School Mathematics Curriculum of Republic of Korea. Every high school can choose Discrete Mathematics as an optional course from year 2002, but mostly from year 2003. According to its characteristics and objectives in the curriculum, we should know how to implement Discrete mathematics. But it is hard to predict whether Discrete Mathematics will be successful or not, since many studies have shown the lack of readiness for the course. In this study, we analyze the Discrete Mathematics text book developed recently in 2002. Then we see how Discrete Mathematics can be implemented. First, we suggest how the contents in the Discrete Mathematics text book are related to the mathematical values. This will clarify instruction and learning methods in Discrete Mathematics classrooms. Secondly, rich and various discrete contents should be taught. Students should appreciate the realistic merits of discrete mathematics. Thirdly, evaluation methods and their examples will be presented based upon the contents of she text. The evaluation that distinguishes individual achievement levels is closely related with implementation of Discrete mathematics in schools. Finally, we point out the weakness of Discrete Mathematics contents in the 7th curriculum to prepare ourselves for the 8th curriculum.

• The Journal of Korean Medical History
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• v.28 no.1
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• pp.135-141
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• 2015

The purpose of this study is to analyze vocabulary found in "Donguibogam", one of the medical books in mid-Chosun, through Corpus-based analysis, one of the text analysis methods. According to it, Donguibogam has total 871,000 words in it, and Chinese characters used in it are total 5,130. Among them, 2,430 characters form 99% of the entire text. The most frequently appearing 20 Chinese characters are mainly function words, and with this, we can see that "Donguibogam" is a book equipped with complete forms of sentences just like other books. Examining the chapters of "Donguibogam" by comparison, Remedies and Acupuncture indicated lower frequencies of function words than Internal Medicine, External Medicine, and Miscellaneous Diseases. "Yixuerumen (Introduction to Medicine)" which influenced "Donguibogam" very much has lower frequencies of function words than "Donguibogam" in its most frequently appearing words. This may be because "Yixuerumen" maintains the form of Chileonjeolgu (a quatrain with seven Chinese characters in each line with seven-word lines) and adds footnotes below it. Corpus-based analysis helps us to see the words mainly used by measuring their frequencies in the book of medicine. Therefore, this researcher suggests that the results of this analysis can be used for education of Chinese characters at the college of Korean Medicine.

• Journal of the Korean Society of Earth Science Education
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• v.7 no.1
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• pp.34-42
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• 2014

The purpose of this study was to examine the effects on the effects of science lessons using six thinking hats techniques on creativity and science academic achievement. To verify the research problem, the subject of this study was fourth-grade students selected from four classes of an elementary school located in Busan. For ten weeks, the experimental group of 40 students was taught using the six thinking hats techniques. The comparative group also of 40 students, was taught in normal classes which used a Text-book. Children were given a creativity test and academic achievement test in science to measure the effects on six thinking hats techniques. Likert scales were used to gather students feedbacks on creativity and science academic achievement. Through these procedures, the following results were obtained: First, the six thinking hats techniques had a more effect on creativity than the normal classes, where a text-book was used. Second, the six thinking hats techniques could be seen to be effective in improving the student's academic achievements in science than the normal classes which used a Text-book. Third, the result of the student recognition investigation, we could know that the students showed lots of interest in the science lessons using six thinking hats techniques, and they were able to understand the scientific theories. As a result, the elementary science class with six thinking hats techniques had the effects of developing creativity and science academic achievement. It means the science class with six thinking hats techniques has potential possibilities and value to develop creativity and science academic achievement.

• The Journal of Pediatrics of Korean Medicine
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• v.15 no.2
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• pp.53-68
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• 2001

Purpose : This Study was conducted to evaluate clinical manifestations of abdominal pain(AP) in childhood according to its symptoms and to find out characteristic of children with abdominal pain. Methods : Pacients who visited Dong-Eui Oriental Medical hospital from August to November 2001 due to abdominal pain were included. According to questionaire and history taking abdominal pain was classified by its six subtype in the Oriental Pediatic Text Book and Dong Eui Bo Gam(東醫寶鑑). Result : According to the Oriental Pediatic Text Book, among 41 children, 31.7% had symptoms of AP caused by cold in internal organs of deficiency(臟腑虛冷腹痛), 29.3% had symptoms of AP caused by diet(食積腹痛), 19.5% had symptoms of AP caused by cold(寒腹痛), 9.8% had symptoms of AP caused by both cold and diet, 7.3% had symptoms of AP caused by internal diet and external cold(內食外寒腹痛), 2.4% had symptoms of AP caused by stagnation of Ki and stasis of blood(氣滯血瘀腹痛). There is no AP caused by parasites(蟲腹痛). Otherwise, according to Dong Eui Bo Gam, 43.9% had symptoms of AP caused by cold, 26.8% had symptoms of AP caused by diet, 9.8% had symptoms of AP caused by both cold and diet, 7.3% had symptoms of AP caused by fire(熱腹痛), 7.3% had symptoms of AP caused by phlegm(痰飮腹痛), 4.9% had symptoms of AP caused by stagnated blood(瘀血腹痛). Also There is no AP caused by parasites. Conclusion : 1. The type of AP in Childhood is different from AP in adults. AP in Childhood is most occured by cold of deficiency and food, and there is few AP caused by fire. Six subtype in Dong Eui Bo Gam prefer adults to children and It is more studied that what kind of subtype is proper for AP caused by stress or drugs. So the study on subclassification and clinical Manifestations of AP in Childhood is more performed.

• Journal of the Korean Society of Earth Science Education
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• v.7 no.2
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• pp.192-202
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• 2014

The purpose of this study was to examine the effects of science lessons using mind mapping on creativity and academic achievement in science. The subjects of this study were fifth-grade students selected from four classes of an elementary school located in Busan. For ten weeks, the experimental group of 40 students were taught using the mind mapping technique. The comparative group, also of 40 students, was taught in normal classes which used a standard text-book. Children were given a test on science processing skills and academic achievement in science to measure the effects of mind mapping. The Likert scales were used to gather student's feedback on creativity and academic achievement in science. Through these procedures, the following results were obtained: First, mind mapping had a greater effect on science processing skills than the normal classes, where a text-book was used. Second, mind mapping was effective in improving the student's academic achievements in science at a greater level than the normal classes where a text-book was used. Third, after viewing results of the Student Recognition Investigation, we found that the students showed a higher level of interest in science lessons that used mind mapping, and were better able to understand the scientific theories. As a result, the elementary science class with mind mapping developed greater science processing skills and saw higher academic achievement in science. We conclude that science classes that use mind mapping have the potential to develop better science processing skills and improve academic achievement in science.

• Journal of Korean Home Economics Education Association
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• v.5 no.1
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• pp.17-30
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• 1993

The purpose of this study is to investigate teachers’recognition and teaching methods in Housing of Home Economics Text Book of Middle School and to provide the basic data for the improvement of its curriculum. Home Economics teachers of the 433 schools responded in nationwide to the mailed questionaire. The selected data were manipulated by percent and verified in the way of t-test. The findings of this study are as follows: 1. Most Home Economics teachers have ever taken teacher training but there are few who have never taken any teacher training in Housing. And even those who have ever taken the training in Housing are not satisfied with the training curriculum contents. Therefore, the result of this study shows that Housing should be included in the teacher training curriculum contents, and that the teacher training curriculum contents, and that the teacher training curriculum contents should be helpful for the actual teaching and learning. 2. It is necessary to allot more houres for Housing, in that most teachers actually allot more time for Housing than presented in teachers’guide, and to develop more teaching aids for the effective instruction of Housing. In terms of the suitability of Housing to the students’learning development levels, the degree of suitability is in the order of the significance of housing, housing sanitation, the types of housing, the space for housing, the ground plan of housing, the arrangement of furniture. The contents about the interior decoration and gardening of the existing text book have turned out not to be appropriate.. In terms of the relation between the place of residence and the curriculum, Housing is suitable for the city, but not for the farming, mining, and sea village, Teachers suggest that the content of the curriculum about Housing should be varied according to the location of the school. 3. The number of the teaching aids for Housing is in the order of picture, charts and pamphlet but not sufficient.