• Korean Journal of Plant Taxonomy
• /
• v.36 no.3
• /
• pp.227-255
• /
• 2006

Takenoshin Nakai (1882-1952), Japanese taxonomist and professor of the University of Tokyo, who was one of Korean flora specialists, conducted his plant exploration from 1909 to 1942 after he completed two volumes of Flora Koreana. His collections, which are currently deposited at the University of Tokyo herbarium (TI), are important research resources. Since all collection sites were simply described in his collection sites in Romanized characters based on Japanese pronunciation, it is difficult for Korean as well as Japanese botanists to pinpoint those sites using the current or the old Korean maps. No single literature has been available regarding his collection routes and sites, although this information is essential to current plant systematic research in Korea. From this current study, all locality names were reviewed based on his own collections as well as his written literatures, and those were listed as the order of his collection dates with seven maps here.

• Journal of Science and Technology Studies
• /
• v.14 no.1
• /
• pp.35-57
• /
• 2014

This study examines how biopolitics, constructed in the West, has been accepted in the Korean peninsula, by focusing on the discourses of "sanitation" and "OTC (Over-the-Counter) medicine" perpetuated in the late Joseon Dynasty and the colonial period. There are two meanings of sanitation in Korea before and after the opening of her ports. The pre-modern sanitation attends to the strong vitality of one's body and mind, while the modern sanitation emphasizes a healthy environment. What is observed between the two meanings of sanitation is a transition of viewpoints from the first-person to the third-person. This transformation has constructed passive bodies that allow the intervention of biopolitics. OTC medicine has reinforced this viewpoint of a third-person and combined it with commodification. The discourses of sanitation and OTC medicine continue, for example, in the strong discourse of regular medical examinations in contemporary Korean society.

• The Bulletin of The Korean Astronomical Society
• /
• v.41 no.2
• /
• pp.59.3-59.3
• /
• 2016

90년대 후반에 내전이 끝난 캄보디아는 태국이나 베트남에 비해 정치, 경제적으로 안정되지 못한 상황이다. 어린이들에 대한 교육환경 역시 좋지 않아, 기초과학을 접할 수 있는 기회가 적을 뿐 아니라, 대도시를 벗어난 곳에서는 과학교육이 거의 이루어지지 못하고 있는 현실이다. 수도 프놈펜에서 북서쪽, 차편으로 4시간 거리에 있는 뿌삿시 끄로압에서 몬테소리 유치원을 운영하고 있는 한국봉사단의 요청으로 한국천문학회는 2016년 상반기에 관심있는 학회 구성원들을 중심으로 천문학 교육 프로그램 지원단을 구성하여 6월말부터 25일까지 2주 동안 현지 어린이들을 대상으로 천문학 교육 프로그램을 수행한 바 있다. 모두 50여명의 초, 중등 학생들이 참여하여 성황리에 마무리된 캄보디아 교육 프로그램의 성과와 시사점, 앞으로의 계획 등을 소개하고자 한다.

• Journal of Korea Game Society
• /
• v.17 no.1
• /
• pp.99-108
• /
• 2017

Communication is one of the very important factor in MMORPGs where a large number of users participate at the same time. The voice chatting system, which was appeared in the development process of the chatting system, failed in Korea but it was a great success in China. The purpose of this study is to analyze this cause. The research scope of this study is as follows. We set the range of this study from 2003 to 2015. This period covers the beginning of the growth of the Chinese game industry up to the present. The research target games are MMORPGs, which ranked 1st in sales and concurrent users. In the research and survey analysis process, various factors such as the input speed of Chinese and Korean characters and the relationship between men and women were investigated and analyzed. In conclusion, chatting system in Chinese MMORPGs has developed into three stages and we found out that voice chatting in China was relatively popularized rather than in Korea. China's slow typing speed and excellent voice chatting system were the main factors.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.21 no.12
• /
• pp.3265-3276
• /
• 1996

The studies of document recongnition have been focused mainly on Korean documents. But most of documents composed of Korean and other characters. So, in this paper, we propose the document recognition system that can recognize the multi-size, multi font and mixed type characters. We have utilized a large scale network model, "CombNET" which consists of a 4 layered network with combstructure. And we propose recognition method that can recognize characters without discrimination of character type. The first layer constitutes a Kohonen's SOFM network which quantizes an input feature vector space into several sub-spaces and the following 2-4 layers constitutes BP network modules which classify input data in each sub-space into specified catagories. An experimental result demonstrated the usefulness of this approach with the recognition rates of 95.6% for the training data. For the mixed type character documents we obtained the recognition rates of 92.6% and recognition speed of 10.3 characters per second.

• Journal of Internet Computing and Services
• /
• v.21 no.1
• /
• pp.79-85
• /
• 2020

Today, to block spam texts on smartphone, a simple string comparison between text messages and spam keywords or a blocking spam phone numbers is used. As results, spam text is sent in a gradually hanged way to prevent if from being automatically blocked. In particular, for words included in spam keywords, spam texts are sent to abnormal words using special characters, Chinese characters, and whitespace to prevent them from being detected by simple string match. There is a limit that traditional spam filtering methods can't block these spam texts well. Therefore, new technologies are needed to respond to changing spam text messages. In this paper, we propose a knowledge graph-based new words detection mechanism that can detect new words frequently used in spam texts and respond to changing spam texts. Also, we show experimental results of the performance when detected Korean new words are applied to the Naive Bayes algorithm.

• Journal of the Korean Society for Library and Information Science
• /
• v.49 no.1
• /
• pp.379-403
• /
• 2015

Name Authority Control is useful not only to manage author information but also to gather other names of authors in order to provide access points in libraries and other institutes. The purpose of this study is to find problems through comparing and analyzing Literature Translation Institute of Korea Author Database, Korean name authority records of national libraries in the U. S., Japan and Korea. The results of the study are as follows. First, Literature Translation Institute of Korea Author Database missed some useful information about Korean writers in translated books in other countries. Second, the name authority file of Library of Congress and National Diet Library did not include the variant names, dates of authors' birth and death date, and filled out incorrect variant names with some birth and death dates. Third, English and Chinese character variants of Korean authors were not found in the National Library of Korea. To solve these problems, revisions of Korean author database, open access to National Library of Korea name authority file, and a strong participation of VIAF were suggested.

• Journal of the Korea Society of Computer and Information
• /
• v.16 no.9
• /
• pp.19-26
• /
• 2011

Users want to receive customized service using users' personal device. To fulfill this requirement, the mobile device has to support a lot of functions. However, the mobile device has limitations such as tiny display screens. To solve this limitation problem and provide customized service to users, this paper proposes the environment to provide services by sharing resources and the method to recommend user-suitable resources among sharable resources. For the resource recommendation, This paper analyzes user's behavior pattern from usage history and proposes the method for recommending customized resources. This paper also shows that the approach is reasonable one for resource recommendation through the satisfaction evaluation.

• Transactions of the Korean hydrogen and new energy society
• /
• v.26 no.4
• /
• pp.339-346
• /
• 2015

The synthesis of Fischer-Tropsch (FT) oil is the catalytic hydrogenation of CO to give a range of products, which can be used for the production of high-quality diesel fuel, gasoline and linear chemicals. This studied catalyst was prepared Cobalt-supported alumina and silica by the incipient wet impregnation of the nitrates of cobalt, promoter and organic solvent with supports. Cobalt catalysts were calcined at $350^{\circ}C$ before being loaded into the FT reactors. After the reduction of catalyst has been carried out under $450^{\circ}C$ for 24h, FT reaction of the catalyst has been carried out at GHSV of 4,000/hr under $200^{\circ}C$ and 20atm. From these experimental results, we have obtained the results as following; In case of $SiO_2$ catalysts, the activity of 12wt% $Cobalt-SiO_2$ synthesized by organic solvent was about 2 or 3 times higher than the activity of 12wt% $Cobalt-SiO_2$ catalyst synthesized without organic solvent. In particular, the activity of the $Cobalt-SiO_2$ catalyst prepared in the presence of an organic solvent P was two to three times higher than that of the $Cobalt-SiO_2$ catalyst prepared without the organic solvent. Effect of Cr and Cu metal as a promoter was found little. 200 h long-term activity test was performed with a $Co/SiO_2$ catalyst prepared in the presence of an organic solvent of Glyoxal solution.

• Transactions of the Korean hydrogen and new energy society
• /
• v.28 no.6
• /
• pp.649-656
• /
• 2017

At present, hydrogen is emerging as a future energy source based on environment-friendly aspect, creation of new industry, and enhancement of domestic energy security. In accordance with it, the world's leading automobile companies are focusing on the development and commercialization of hydrogen electric vehicle technology, and each country is strengthening its hydrogen fueling station deployment strategy for its own country. Furthermore, the supply of hydrogen fueling stations is actively promoting under national support. More than 500 hydrogen fueling stations are being constructed, operated and planned around the world. The introduction of hydrogen energy is also progressing in Korea, by announcing road-map to supply hydrogen electric vehicles and hydrogen fueling stations by year. However, there is insufficient discussion on the capacity of hydrogen fueling station in Korea. Therefore, this study suggests the optimum capacity of hydrogen fuelling station for domestic hydrogen economy.