• The Korean Journal of Malacology
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• v.30 no.3
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• pp.299-302
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• 2014

We report three new records Korean marine gastropods. The new record species are Hipponix acuta, Lyncina (Ponda) carneola, and Velutina (Velutella) plicatilis cryptospira. As a result, the family Hipponicidae in Korea turned out to be 5 species of 4 genera, Cypraeidae are 14 species of 8 genera, and Velutinidae are 7 species of 3 genera, respectively.

• Journal of Species Research
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• v.6 no.spc
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• pp.215-219
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• 2017

Two species new for Korea, Scolopocryptops nigrimaculatus Song, Song and Zhu, 2004 and Scolopocryptops mushashiensis Shinohara, 1984 are reported from South Korea. The Korean occurrance of S. nigrimaculatus is the first record of the species outside China, while S. mushashiensis has been known only form its type locality in Japan till now.

• Animal Systematics, Evolution and Diversity
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• v.27 no.1
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• pp.89-92
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• 2011

Hydroid specimens were collected from the coasts of Isl. Jeongjokdo (Taean) and Gampo Harbour, Korea, on 10 May and 19 October 2010. Two of the species identified as Sertularia tenera G.O. Sars 1874 and Plumularia halecioides Alder 1859 are new to Korean fauna. They are described with illustrations.

• Bulletin of the Korean Mathematical Society
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• v.58 no.2
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• pp.433-444
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• 2021

In this paper a new generating procedure of a random chord is presented. This problem has its roots in the Bertrand's paradox. A study of the limit behaviour of its maximum length and the rate of convergence is conducted. In addition, moments of record values of random chord length are obtained for this case, as well as other cases of solutions of Bertrand's paradox.

• Korean Journal of Environmental Biology
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• v.35 no.3
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• pp.345-353
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• 2017

Detailed morphological studies and molecular analyses based on plastid-encoded rbcL gene sequences were undertaken on Peyssonnelia species, a poorly known genus from Korea. We report new records for the Korean coast, Peyssonnelia harveyana and P. rumoiana. Peyssonnelia harveyana is chiefly characterized by P. rubra-type anatomy, closely packed perithallial filaments in firm matrix, hypothallial filaments arranged in parallel rows, thalli with appressed margins, hypobasal calcification, and unicellular rhizoids. Peyssonnelia rumoiana is principally characterized by two vegetative features, hypothallial filaments arranged in a polyflabellate layer, and perithallial filaments arising from the whole upper surface of each hypothallial cell (Peyssonnelia rubra-type anatomy). Our rbcL analyses revealed that P. harveynana and P. rumoiana were placed within a clade of Peyssonnelia. We also propose the new combination, Sonderophycus cauliferus comb. nov., for previous Peyssonnelia caulifera. Phylogenetic analyses revealed that our S. cauliferus was placed within a clade of Sonderophycus.

• Mycobiology
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• v.44 no.3
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• pp.137-145
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• 2016

Most known species in the Strophariaceae are decomposers and grow on various kind of organic matter. Approximately 18 genera and 1,316 species in the Strophariaceae have been reported worldwide. Through an ongoing survey of indigenous fungi in Korea, 29 specimens belonging to the Strophariaceae were collected from 2012 to 2016. These specimens were identified based on morphological characteristics and molecular analysis of internal transcribed spacer sequences. Fifteen taxa were confirmed, with eight species matching those previously recorded. Seven species in five genera were shown to be new records in Korea: Galerina marginata, Gymnopilus crociphyllus, Gymnopilus picreus, Hebeloma birrus, Hebeloma cavipes, Pholiota multicingulata, and Psilocybe thaizapoteca. In this study, we provide detailed morphological descriptions of these species and investigate their evolutionary relationships by constructing phylogenetic trees.

• Korean Journal of Applied Biomechanics
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• v.28 no.3
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• pp.151-158
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• 2018

Objective: In this study, we analyzed kinematic changes in the start phase of speed skating before and after physical training. Method: We introduced a new strength training program (2017) that was improved in terms of exercise type and intensity [%, one repetition maximum (1RM)] compared with the previous strength training program (2016). The new program was applied to elite speed skating athletes (four males and four females). To determine the improvement in starting technique, we recorded race images during the start phase of the 500-m race held in 2016 and 2017. The race images were collected using five high-speed cameras and kinematic characteristics of the start phase were analyzed by three-dimensional image analysis. Results: The 1RMs were improved by 11% on an average after the strength training. In 2017, records of four out of the eight athletes were shortened in terms of the initial lap time (100 m), and 500-m records were shortened in six athletes. The time to nine strokes was shortened in five athletes, and the ratio of correct kinetic chain was increased or maintained at a high level in six athletes. Conclusion: In this study, the new strength training program (2017), applied to elite speed skating athletes, showed a positive effect on starting technique and reduced the record times.

• Journal of Species Research
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• v.4 no.1
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• pp.33-44
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• 2015

A total of 34 species belonging to 11 families and 21 genera in the Order Mestostigmata are reported from the Korean Peninsula, of which 20/34 species are new for the fauna of the Korean Peninsula (Lasioseius furcisetus Athias-Henriot, 1959, Cheiroseius nepalensis Evans & Hyatt, 1960, Cheiroseius curtipes (Halbert, 1923), Hypoaspis imitatus Reitblat, 1963, Hypoaspis presternalis Willmann, 1949, Hypoaspis kargi Costa, 1968, Pseudoparasitus placentulus (Berlese, 1887), Gamasiphis novipulchellus Ma & Yin, 1998, Parholaspulus bregetovaae Alexandrov, 1965, Parholaspulus paradichaetes Petrova, 1967, Neparholaspis arcuatus Petrova, 1977, Neparholaspus simplex Evans, 1956, Parholaspulus excentricus Petrova, 1967, Gamasholapis asiaticus Petrova, 1967, Veigaia carpillaris Tseng, 1994, Veigaia anmashanensis Tseng, 1994, Leptogamasus bicorniger Witalinski, 1977, Neogamasus insignis (Holzman, 1969), Iphidinychus kakumeiensis Hiramatsu & Hirschmann, 1992, Trigonuropoda sanguinea Hirschmann & Hiramatsu, 1977). A total of 19 of the previously unreported species were collected in soil samples from the Democratic People's Republic of Korea (DPRK), while 13 species were collected from soil samples from the Republic of Korea (ROK). Only two species were found in both the DPRK and the ROK. Illustrations and short descriptions for previously unreported species provided.

• Fisheries and Aquatic Sciences
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• v.16 no.2
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• pp.109-116
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• 2013

Eighteen specimens of juvenile Mugilidae were collected in October 2012 from the southern coastal waters of Jeju Island, and identified based on analysis of their mitochondrial DNA16S rRNA sequences. Seventeen specimens of Oedalechilus labiosus and a single specimen of Ellochelon vaigiensis were found, constituting a new record for these species among Korean ichthyofauna. O. labiosus is identified by the angle at the posterior end of its mouth, which contains a round notch, a darkish dorsal margin of the pectoral fin, the presence of 33-36 lateral line scales, and 23-24 vertebrae. E. vaigiensis is identified by dark dorsal and pectoral fins, the presence of 26 lateral line scales, and 25 vertebrae. The proposed Korean name for Oedalechilus is 'Sol-ip-sung-eo-sok' and that for Ellochelon is 'Nup-jeok-ggo-ri-sung-eo-sok'. The proposed Korean names for the species are 'Sol-ip-sung-eo' and 'Nup-jeok-ggo-ri-sung-eo' for O. labiosus and E. vaigiensis, respectively. We present a key for identification of the Mugilidae family of species from Korea, and include these two newly recorded species.

• Journal of the Korean Society for Library and Information Science
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• v.37 no.4
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• pp.69-88
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• 2003

This study intends to develop a new duplicate detection algorithm to improve database quality. The new algorithm is developed to analyze by variables of language and bibliographic type, and it checks elements in bibliographic data not just MARC fields. The algorithm computes the degree of similarity and the weight values to avoid possible elimination of records by simple input error. The study was peformed on the 7,649 newly uploaded records during the last one year against the 210,000 sample master database. The findings show that the new algorithm has improved the duplicates recall rate by 36.2%.