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An updated list of mosses of Korea

  • Kim, Wonhee;Higuchi, Masanobu;Yamaguchi, Tomio
    • Journal of Species Research
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    • v.9 no.4
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    • pp.377-412
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    • 2020
  • Cardot(1904) first reported 98 Korean mosses, which were collected from Busan, Gangwon Province, Mokpo, Seoul, Wonsan and Pyongyang by Father Faurie in 1901. Thirty-four of these species were new species to the world. However, eight of these species have been not listed to the moss checklist of Korea before this study. Thus, this study complies the literature including Korean mosses, and lists all the species there. As the result, the moss list of Korea is updated as including 775 taxa (728 species, 7 subspecies, 38 varieties, 2 forma) arranged into 56 families and 250 genera. This list include species that have been newly recorded since 1980. Brachythecium is the largest genus in Korea, and Fissidens, Sphagnum, Dicranum and Entodon are relatively large. Additionally, this study cites specimens collected from Jeju Island, Samcheok, Gangwon Province, and Socheong Island, and it is possible to confirm the distribution of 338 species in Korea.

An Updated Checklist and Perspective Study of Millipedes (Arthropoda: Myriapoda: Diplopoda) in the Korean Peninsula

  • Nguyen, Anh D.;Jang, Kuem Hee;Hyun, Jung Su;Hwang, Ui Wook
    • Animal Systematics, Evolution and Diversity
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    • v.32 no.1
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    • pp.44-48
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    • 2016
  • The Korean peninsula has diverse habitats and so would be expected to have a rich millipede fauna because of its location between the Paleoarctic and Oriental regions. To facilitate studies on millipedes, this work provides an updated list and discussion of Korean millipedes. A total of 69 species had been recorded up to 2010, but since then no new species have been reported. Among 69 species, 49 are endemic to the Korean peninsula. From 1950 to the present, an average of only seven new species from the Korean peninsula has been described per decade. This number does not reflect the biodiversity of millipedes in Korea, especially when compared to Taiwan, which has only one-third the area of the Korean peninsula, but from which a greater number of millipede species have been recorded (75 vs. 69 species). Japan has twofold the land area of the Korean peninsula, and an almost threefold higher number of millipede species. Further, more-intensive surveys will likely result in identification of more millipede species in the Korean peninsula.

A Low Complexity Candidate List Generation for MIMO Iterative Receiver via Hierarchically Modulated Property (MIMO Iterative 수신기에서 계층적 변조 특성을 이용한 낮은 복잡도를 가지는 후보 리스트 발생 기법)

  • Jeon, Eun-Sung;Yang, Jang-Hoon;Kim, Dong-Ku
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.34 no.6A
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    • pp.500-505
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    • 2009
  • In this paper, We present a low complexity candidate list generation scheme in iterative MIMO receiver. Since QAM modulation can be decomposed into HP symbols and LP symbol and HP symbol is robust in error capability, we generate HP symbol list with simple ZF detector output and its corresponding neighbor HP symbols, Then, based on HP symbol list, the LP symbol list is generated by using the sphere decoder. From the second iteration, since apriori value from channel decoder is available, the candidate list is updated based on demodulated apriori value. Through the simulation, we observe that at the first iteration, the BER performance is worse than LSD. However, as the number of iteration is increased, the proposed scheme has almost same performance as LSD. Moreover, the proposed one has reduced candidate list generation time and lower number of candidate list compared with LSD.

Development of Nuclear Industry Information Gathering and Analysis System and Denied Persons Information Gathering System for Preventing Illegitimate Export of Trigger List Items in Korea

  • Sangjun Lee
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.21 no.3
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    • pp.315-327
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    • 2023
  • In South Korea, the exporters of items related to nuclear power generation are diversified. Consequently, there is a risk of illegitimate export by companies failing to recognize the export control system because the awareness about this system for the strategic items among the subcontractors of nuclear power facilities is limited. To prevent illegitimate export of the strategic items, it is necessary to conduct outreach activities regarding the export control system for the related companies. Additionally, the exporters and export license examiners should consider whether an export target is on the Denial List, who may divert the strategic items to weapons of mass destruction. Therefore, the Korea Institute of Nuclear Nonproliferation and Control developed two systems for controlling illegitimate export of the Trigger List items. The first system, Nuclear Industry Information Collection and Analysis System, can gather information about the key nuclear industries in Korea and analyze the dealing of strategic items. The second system, Denied Persons Information Gathering System, can regularly gather information about the denied persons and provide the updated data to the exporters and regulatory examiners. These two systems can be used for outreach activities and export license examination to prevent illegitimate export of the strategic items.

A study on the list of must books in middle schools (중고등학교 필독도서목록에 관한 연구)

  • 변우열
    • Journal of Korean Library and Information Science Society
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    • v.24
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    • pp.243-274
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    • 1996
  • The purpose of this study is to investigate the necessity, selection, organization and management of Must Books List in middle schools. A great book can change a person's life and future. Especially, reading in the juvenile period is important because of their intellectual curiosity and sensitivity. The results of the study were as follows: 1. The necessity of Must Books can be considered in two perspectives : One is the cultivation of emotion and sense of value and the other is the development of information abilities. 2. The general criteria for the selection of Must Books are whether a book is su n.0, pportive of learning activities, of extracurricular activities, and of activities for school festivals. And whether a book is contributing to the building of good characters of students or not should be considered, too. 3. The special attention should be given to such matters as the organizational and distributional ratio among subjects of the Must Books, the degree of difficulties, the ratio of books for both male and female students, the ratio of foreign books to domestics, the possibilities of further reading and the bibliographical matters. 4. The points to be duly considered for the management of Must Books List are the educational considerations, clearness of objectives, the elimination of commercialism and authoritarianism in the book selection. The Must Books List should be managed autonomously, depending on the characteristics of each school and be updated annually. However, the most important thing is that the teacher should be a good reader himself. 5. It is better to include short stories than the long one in the Must Book List. Students should be guided to read explanatory text first and then to move to the original text. And they should be exposed to books in various subjects and not to be too dependent on the Must Books List. They should be able to develop the problem solving ability through the reading of the Must Books. 6. Finally, the Must Books selection committee should be composed of both teacher librarian and subject teachers. It is desirable that books for the cultivation of emotion, for the establishment of sense of value, and for the development of information ability should be selected by consulting the various reading lists compiled by the Ministry of Education, the Board of Local Education and other authorities concerned.

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Identification and Analysis of External Event Combinations for Hanhikivi 1 PRA

  • Helander, Juho
    • Nuclear Engineering and Technology
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    • v.49 no.2
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    • pp.380-386
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    • 2017
  • Fennovoima's nuclear power plant, Hanhikivi 1, $Pyh{\ddot{a}}joki$, Finland, is currently in design phase, and its construction is scheduled to begin in 2018 and electricity production in 2024. The objective of this paper is to produce a preliminary list of safety-significant external event combinations including preliminary probability estimates, to be used in the probabilistic risk assessment of Hanhikivi 1 plant. Starting from the list of relevant single events, the relevant event combinations are identified based on seasonal variation, preconditions related to different events, and dependencies (fundamental and cascade type) between events. Using this method yields 30 relevant event combinations of two events for the Hanhikivi site. The preliminary probability of each combination is evaluated, and event combinations with extremely low probability are excluded from further analysis. Event combinations of three or more events are identified by adding possible events to the remaining combinations of two events. Finally, 10 relevant combinations of two events and three relevant combinations of three events remain. The results shall be considered preliminary and will be updated after evaluating more detailed effects of different events on plant safety.

Study on Development of a Search Program for Surveying Related Papers in Korea and the Renewal of their List (논문 목록 검색 프로그램 개발 연구 및 국내 측량 관련 논문 목록의 최신화)

  • 김병국
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.14 no.2
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    • pp.219-228
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    • 1996
  • The list of the titles of surveying-related papers and books is updated by adding newly polished paper/book titles to the existing one. A special title-search program is developed for managing and searching the surveying-re-lated paper/book titles, and the database is established from the list of the papers. The total number of papers/books in surveying-related field published in Korea upto now is 971. The number of papers/books published in the specific fields are 206 in the conventional surveying field, 218 in Photogrammetry, 183 in Remote Sensing, 127 in Geodesy and GPS, and 237 in Digital Mapping and GIS. The special title-search program is developed using the Visual Basic 3.0 for Windows 3.1 to be operated in the Window environment. The SQL(Structured Query Language) is used for the searching commands.

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Fissidens (Fissidentaceae, Bryophyta) species newly recorded in Korea

  • KWON, Woochan
    • Korean Journal of Plant Taxonomy
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    • v.51 no.1
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    • pp.18-32
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    • 2021
  • Here, 15 taxa of genus Fissidens Hedw. are reported as new to the moss flora of Korea: F. bryoides var. esquirolii, F. closteri subsp. kiusiuensis, F. crispus, F. curvatus, F. enervis, F. flabellulus, F. ganguleei, F. gracilifolius, F. gymnandrus, F. incurvus, F. longisetus, F. pusillus, F. takayukii, F. viridulus, and F. wichurae. The list of Fissidens in Korea, consisting of 26 taxa previously, is updated to 38 taxa by adding 15 taxa and excluding three taxa. Descriptions, taxonomic notes with diagnoses, in situ and microscopic photographs of the unrecorded species, and taxonomic keys of four sections belonging to the subgen. Fissidens are provided.

A Study on Design and Development of Web Information Collection System Based Compare and Merge Method (웹 페이지 비교통합 기반의 정보 수집 시스템 설계 및 개발에 대한 연구)

  • Jang, Jin-Wook
    • Journal of Information Technology Services
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    • v.13 no.1
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    • pp.147-159
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    • 2014
  • Recently, the quantity of information that is accessible from the Internet is being dramatically increased. Searching the Web for useful information has therefore become increasingly difficult. Thus, much research has been done on web robots which perform internet information filtering based on user interest. If a web site which users want to visit is found, its content is searched by following the searching list or Web sites links in order. This search process takes a long time according as the number of page or site increases so that its performance need to be improved. In order to minimize unnecessary search with web robots, this paper proposes an efficient information collection system based on compare and merge method. In the proposed system, a web robot initially collects information from web sites which users register. From the next visit to the web sites, the web robot compares what it collected with what the web sites have currently. If they are different, the web robot updates what it collected. Only updated web page information is classified according to subject and provided to users so that users can access the updated information quickly.

List of Intercepted Scale Insects at Korean Ports of Entry and Potential Invasive Species of Scale Insects to Korea (Hemiptera: Coccoidea) (우리나라 입항지에서 검출된 깍지벌레 목록 및 침입이 우려되는 깍지벌레(노린재목, 깍지벌레상과))

  • Suh, Soo-Jung;Yu, Hye Mi;Hong, Ki-Jeong
    • Korean journal of applied entomology
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    • v.52 no.2
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    • pp.141-160
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    • 2013
  • An updated list is given of 113 species of scale insects which have been intercepted on plants imported into Korea during the period of 2007 to 2011. Information on the number of interceptions, origin, host plants and distribution of species intercepted at Korean ports of entry is provided. In addition, data on intercepted species was analyzed to determine potential invasive species of scale insects that could threaten Korean plants.