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Big data and network analysis on genealogy focusing on marital relationships of Kimhae Kim's family (디지털화된 족보 빅데이터 및 네트워크 연구 - 김해김씨와 혼인한 본관을 중심으로)

  • Nam, Yoonjae;Park, JinHong
    • Journal of Digital Convergence
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    • v.17 no.11
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    • pp.39-51
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    • 2019
  • This study attempts to investigates big data of marital relationships of Kimhae Kim's family on their genealogy. Through the network analysis, how the relationship between families have been structured and changed longitudinally from 1500s to 1800s. Results showed that the network sizes had increased and centralizations had decreased gradually. However, the results indicated that some families were stably located in the central position on the networks. This study suggests that data on genealogy can be used for big data and social network analyses.

Analysis of Multi-layered Thin Film Using ATR FT-IR and pyro-GC/MS (ATR FT-IR과 pyro-GC/MS를 이용한 다층박막필름의 분석)

  • Park, Sung Il;Lee, Jung-Hyun;Lee, Myung Cheon
    • Journal of Adhesion and Interface
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    • v.20 no.3
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    • pp.102-109
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    • 2019
  • The material constitution of multi-layered thin film coated on the PET base film was analyzed using ATR FT-IR and pyro GC/MS combination. The cross section of the film was acquired by cracking the film after dipping in liquid nitrogen and was observed using optical microscope. Total thickness of the coated film was $70{\mu}m$ and three layers were observed. Since each layers were too thin to analyze directly except the surface layer, analyzable area of each layers were exposed by using a proper solvent and were investigated using ATR FT-IR and pyro GC/MS. Results shows that three layers were commonly consisted of urethane-acrylate copolymers. Also, inorganic and/or metal inclusions detected by XPS and SEM-EDAX were exhibited by nano size $SiO_2$ particles in layer(1) and aluminum flakes in layer(2).

A taxonomic study of Korean Platanthera with a special reference to external morphology (한국산 제비난초속(Platanthera)의 분류학적 검토: 외부형태학적 형질을 중심으로)

  • Lee, Jin-Sil;Choi, Byoung-Hee
    • Korean Journal of Plant Taxonomy
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    • v.35 no.1
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    • pp.25-46
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    • 2005
  • External morphology focusing on the flower structure of Korean Platanthera was examined. The genus Tulotis was included to the genus Plathanthera as previously suggested by many workers, because the diagnostic character to distinguish the two genera was not distinct enough. It is revealed that the taxon previously recognized as P. metabifolia was the misidentification of P. chlorantha and P. neglecta should be treated as a distinct species from P. mandarinorum. In result, Korean Platanthera were rearranged into 8 species; P. chlorantha, P. mandarinorum, P. neglecta, P. hologlottis, P. japonica, P. ophrydioides, P. ussuriensis, and P. fuscescens. A key to the species of Korean Plathanthera and taxonomic discussion of each species were provided.

Spore morphology of Korean Polypodiaceae (한국산 고란초과 식물의 포자 형태)

  • Lim, Jin A;Kim, Chul Hwan;Kwak, Min Ju;Sun, Byung-Yun
    • Korean Journal of Plant Taxonomy
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    • v.36 no.1
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    • pp.1-19
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    • 2006
  • Description of spore morphology of Korean Polypodiaceae has on LM and SEM and key to the genera are provided. Korean Polypodiaceae monad, monolete with bilateral symmetry, bipolar and oblete spore except for Loxogramme grammitoides having trilete spore with radial symmetry. In spore wall structure, exopore showed variable patterns enough to distinguish genera. Perispore was found in all the species examined. The patternof perispore and exospore was most similar in all the species examined except Crypsinus, Pyrrosia hastata ans P. linearifolia. The perispores of Crypsinus, Pyrrosia hastata and P. linearifolia were echinate and gemmate, rugulate, and verrucate respectively. In term of exospore wall sculpturing, Polypodium and Loxogramme showed fossulate, Lepisorus, rugulate with irregular verrucate, Crypsinus ans Coloysis showed psilate or rarely verrucate in the latter, Neocheiropteris ensata showed dense small verrucate, Lemmaphyllum microphyllum showed complex reticulate and Pyrrosia showed verrucate or psilate.

An unrecorded species of Allium (Alliaceae) in Korea: A. pseudojaponicum Makino (부추속(부추과) 미기록 식물 1종: 갯부추)

  • Choi, Hyeok-Jae;Kim, Yoon-Young;Ko, Eun-Mi;Jang, Chang-Gee;Oh, Byoung-Un
    • Korean Journal of Plant Taxonomy
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    • v.36 no.1
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    • pp.53-59
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    • 2006
  • Here we report a previously unrecorded species of Korean Allium (Alliaceae) from Geomundo, Yeosu-si, Jeollanam-do. This taxon, A. pseudojaponicum Makino which has been known to distribute only in the southern part of Japan up to date, is easily distinguished from A. thunbergii G. don by lustrous evergreen leaves and lateral scapes as well as chromosome number (2n=32). The common name, 'Gaet-bu-chu', was newly given considering the property of habitat, which is the dry and rocky grasslands facing to the sea in Korea and Japan. In this study, we redescribe morphological characters, and provide illustrations of habit as well as photographs of habitat.

A taxonomic study on Daucus species vegetated in islands off the Korean Peninsula (한반도 도서 지역에 서식하는 당근류의 분류학적 고찰)

  • Lee, Byoung-Yoon;Kwon, Sun Gyo;Oh, Kyoung-Hee
    • Korean Journal of Plant Taxonomy
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    • v.34 no.4
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    • pp.287-295
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    • 2004
  • Daucus species vegetated in the island Dae-heug-san-do off the Korean Peninsula has been recorded as Daucus littoralis Sibth. et Sm. var. koreana Nakai, endemic to Korea in several flora. However, the name was revealed as a naked name, nomen nudum, because the valid publication and type specimens were found anywhere. Comparative observation on morphological characters between the Korean taxon of Daucus and D. littoralis reveals that the Korean vegetated in the island Dae-heug-san-do is not the D. littoralis, but the D. carota L. subsp. carota. The Korean name of the latter is designated newly as San-dang-geun. The new korean name, Seon-dang-geun, of the unrecorded taxon, D. carota subsp. maritimus (Lam.) Batt., is also given.

Taxonomic reexamination of new species described by Léveillé in the serial papers of Decades plantarum novarum. II. New species currently treated as taxonomic synonyms of other species (Léveillé가 Decades plantarum novarum의 연속 논문에 기재한 한국산 신분류군에 대한 분류학적 검토 II. 신종으로 발표된 분류군 중 분류학적 이명으로 간주되고 있는 분류군)

  • Shin, Hyunchur;Kim, Young-Dong
    • Korean Journal of Plant Taxonomy
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    • v.39 no.3
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    • pp.143-169
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    • 2009
  • To confirm the taxonomic identity of taxa described by $L{\acute{e}}veill{\acute{e}}$, H. H. A, a French plant taxonomist, in the serial papers of Decades plantarum novarum based on the collections of Fathers Faurie and Taquet from the Korean peninsula, we examined the numerous references that contained taxonomic opinions about $L{\acute{e}}veill{\acute{e}}^{\prime}s$ taxa. Among them, 146 taxa were confirmed as conspecific with other existing taxa. Of them, 79 taxa, including Ajuga devestita, were listed as a synonym of only one species. Sixty-seven taxa, including Bidens robertianifolia, were listed as synonyms of two or more species according to taxonomists. Eight taxa, including Aconitum coreanum, were considered illegitimate names because of later homonym, or other problems. Five taxa, including Rhododendron hallaisanense, were treated either as distinct or conspecific taxa depending on taxonomists.

A taxonomic study of Korean Juncus based on the anatomical characters (한국산 골풀속의 해부학적 형질에 의한 분류학적 연구)

  • Jang, Chang-Seok;Oh, Byoung-Un
    • Korean Journal of Plant Taxonomy
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    • v.46 no.4
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    • pp.392-404
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    • 2016
  • The anatomical characters of the 19 taxa of Korean Juncus were reviewed in order to examine their significance in taxonomy. Cross-section analyses were conducted on the stem, leaf, and capsule. Descriptions, line drawings, tables, and a species key of Korean Juncus are provided for species identification based on anatomical characters. The results of this study showed that the arrangements of the vascular bundle, fiber, and air-space structure in the stems as well as the arrangements of the vascular bundle and parenchyma in the leaves and the development of placenta in capsules are the key characters to be used when classifying each species of Juncus. It was revealed that the studied anatomical features were more useful for identification at the subgenera and section levels than at the species level. Therefore, these anatomical characters used in conjunction with external morphological features will make a valuable contribution to establishing a natural classification system for Juncus.

Properties of UV Curable Coating Film Containing Colloidal Silica Acrylate (콜로이드실리카아크릴레이트를 함유한 자외선 경화형 코팅필름의 특성)

  • Lee, Bong-Woo;Hong, Jin-Who;Bang, Moon-Soo;Oh, Hyung-Sik;Kim, Dae-Jun;Kim, Hyun-Joong
    • Journal of Adhesion and Interface
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    • v.4 no.1
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    • pp.9-17
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    • 2003
  • The UV hard coating materials are attracting more and more attention to modern industry, in terms of the development of low or non solvent coating materials which will contribute to economizing both materials and energy and to reducing pollution. This study was performed in order to invent UV curable coating materials containing colloidal silica which have actual industrial applications. As results of experiments, the oligomers type and the concentration of colloidal silica acrylate oligomer (SAOC) have an influence on various especially, The properties of UV hardening cooling, such as chemical, abrasion resistance and weatherability, were greatly enhanced, the impact properties of coated polycarbonate substrate were improved compared with the noncoated that. The UV cured films containing 30 wt% SAOC obtained showed the best properties.

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A study on the Synthesis end Properties of Polyurethane Resin Based on PPG as a Glycol (폴리프로필렌글리콜을 글리콜 성분으로 하는 폴리우레탄 수지의 합성 및 물성에 관한 연구)

  • Yoo, Kil-Sang;Choi, Sang-Goo
    • Elastomers and Composites
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    • v.35 no.3
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    • pp.205-214
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    • 2000
  • The polyurethane resin was prepared by the reaction of tolylenediisocyanate(TDI) and polypropyleneglycol(PPG). Physical properties of the resin were investigated experimentally. Charging catalyst before TDI-dropping induced the rapid increase of viscosity. On the other hand, charging catalyst after TDI-dropping resulted in mild stability without immoderate generation of heat on reaction. The use of phosphoric acid as catalyst led to low viscosity by restraining side-reaction such as forming of branch-chain, buret reaction and allopanate reaction, but it showed low cross-link density and slow drying. The curing speed was more influenced by structures of molecules rather than NCO/OH ratio. Including PPG 400 over 30 wt % showed excellent adhesive strength due to increase of crosslink density.

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