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Taxonomic Studies of Genus Juniperus (향나무속(屬)의 분류학적(分類學的) 연구(硏究))

  • Kim, Su In
    • Journal of Korean Society of Forest Science
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    • v.77 no.3
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    • pp.338-350
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    • 1988
  • In order to solve the taxonomic problems of the genus Juniperus growing in South Korea, an identification key of the genus and species was developed bayed un flower structure, cane and seed shape, branching habit, tree form, leaf characteristics etc. of the 7 native species and the a exotic cultivars. The typical pattern of karyotype found by chromosome analysis of the species was used for the identification among morphologically similar species. The length of chromosome were ranged $9{\sim}15{\mu}m$ in all studied specie. J. chinensis, var. procumbens, and var. kaizuka sere tetraploid, 4n=44, var. globosa, var. procumbens, var. horizontalis, J. virginiada, J. rigida, J. rigida var. longicarpa, and J. coreana were diploid, 2n=22. The species in the Sabina section showed large variation in the length of chromosome and kinetochore position. The species in the Oxycedrus section showed the cytological characteristics that the 11th chromosome t-type(acrocentric), and the m-type abundant chromosome set was relatively uniform as compared to those of the Sabina section. The species in the Sabina section, which are planted in the large city area, show great morphological variation because many different ecotypes were mixed and often crossed among them. In summary, this study was able to make clear identification and to find out similarity among Juniperus, species by the morphological and cytological analysis.

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A Study on Stage of Concern, Level of Use, Innovation Configuration, and Intervention demand of Teachers in Culinary Practice Education (조리실습 교육에 대한 교사의 관심도, 실행 수준, 실행 형태 및 지원 요구도 조사)

  • Park Eun-Sook;Kim Young-Nam
    • Journal of Korean Home Economics Education Association
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    • v.18 no.3 s.41
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    • pp.41-60
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    • 2006
  • The system of teaching culinary practice needs drastic modification to catch up with dietary life and education curriculum changes. To reflect such changes, it is necessary to instill a strong will and interest as well as educational environment improvement in teachers. In this sense, this study researched the teachers' stages of concerns, levels of use, innovation configuration, and intervention demands, based on the CBAM(Concerns Based Adoption Method) developed by Hord et. al. For the survey, 500 questionnaires sent by mail and 187 were analyzed by SPSS/win 10.0 program. The results are summarized as follows. 1) The teachers stages of concerns on culinary practice is assessed to be in the lowest level of perceptual stage, which indicates a state of indifference. 2) In terms of the levels of use, routine use was the highest, followed by refinement use, integrated use, research use, and reinvent use in descending order. Mechanical use posted the lowest level. Even though the stages of concern showed the beginning stage, the Level of use was relatively high. 3) About the innovation configuration, approximately 30% of the teachers were not accomodate the culinary practice referred to the 7th National Education Curriculum. 4) According to the intervention demands on culinary practice education, it was found that teachers generally wanted more interventions in every component. Among the intervention components, the highest demand was on the support for facility. Demand on the financing is the second highest. Teachers in the level of routine use demanded more information and materials supply and individual encouragement, but teachers in the level of preparation needed study opportunity for training on operation skills more.

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Development of Health Promotion Program through IUHPE - Possibilities of collaboration in East Asia - (IUHPE를 통한 건강 증진 프로그램의 발달-동아시아권의 공동연구의 가능성-)

  • Moriyama, Masaki
    • Proceedings of The Korean Society of Health Promotion Conference
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    • 2004.10a
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    • pp.1-16
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    • 2004
  • This paper considers the possibilities of health promotion from the following perspectives; (1) IUHPE, (2) socio-cultural similarities, (3) action research, and (4) learning from our past. 1. The IUHPE values decentralized activities through regions, and countries such as Japan, Korea, Hong Kong, Taiwan and China belong to NPWP region. Since IUHPE World Conference was held in Japan in 1995, Japan used to occupy more than 60% of NPWP membership. After 2001, membership is increasing rapidly in Chinese speaking sub-region. The transnational collaboration is still in its beginning phase. 2. Confucianism is one of key points. Confucian tradition should not be seen only as obstacles but as advantages to seek a form of health promotion more acceptable in East Asia. 3. Within the new public health framework, people are expected to create and live their health. However, especially in Japan, the tendency of 'lacking of face-to-face explicit interactions' is still common at health-promotion settings as well as academic settings. Therefore, the author tried participatory approaches such as asking WlFY (interactive questions designed for subjects to review their daily life and environment) and as introducing round table interactions. So far, majority of participants welcome new trials. 4. The following social phenomena are comparatively discussed after Japanese invasion and occupation of Korea ended in 1945; ·status of oriental medicine, ·separation of dispensary services, and ·health promotion specialist as a national license. In contrast to Japanese' tendency of maintaining the status quo and postponing of substantial social change, trend toward rapid and dynamic social changes are more commonly observed in Korea. Although all of above possibilities are still in their beginning stages, they are going to offer interesting directions waiting for further challenges and accompanying researches.

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CNN-based Recommendation Model for Classifying HS Code (HS 코드 분류를 위한 CNN 기반의 추천 모델 개발)

  • Lee, Dongju;Kim, Gunwoo;Choi, Keunho
    • Management & Information Systems Review
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    • v.39 no.3
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    • pp.1-16
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    • 2020
  • The current tariff return system requires tax officials to calculate tax amount by themselves and pay the tax amount on their own responsibility. In other words, in principle, the duty and responsibility of reporting payment system are imposed only on the taxee who is required to calculate and pay the tax accurately. In case the tax payment system fails to fulfill the duty and responsibility, the additional tax is imposed on the taxee by collecting the tax shortfall and imposing the tax deduction on For this reason, item classifications, together with tariff assessments, are the most difficult and could pose a significant risk to entities if they are misclassified. For this reason, import reports are consigned to customs officials, who are customs experts, while paying a substantial fee. The purpose of this study is to classify HS items to be reported upon import declaration and to indicate HS codes to be recorded on import declaration. HS items were classified using the attached image in the case of item classification based on the case of the classification of items by the Korea Customs Service for classification of HS items. For image classification, CNN was used as a deep learning algorithm commonly used for image recognition and Vgg16, Vgg19, ResNet50 and Inception-V3 models were used among CNN models. To improve classification accuracy, two datasets were created. Dataset1 selected five types with the most HS code images, and Dataset2 was tested by dividing them into five types with 87 Chapter, the most among HS code 2 units. The classification accuracy was highest when HS item classification was performed by learning with dual database2, the corresponding model was Inception-V3, and the ResNet50 had the lowest classification accuracy. The study identified the possibility of HS item classification based on the first item image registered in the item classification determination case, and the second point of this study is that HS item classification, which has not been attempted before, was attempted through the CNN model.

Vegetation of Jangdo Island (장도의 식생)

  • Choi, Byoung-Ki;Kim, Jong-Won;Kim, Seong-Yeol;Lim, Jeong-Cheol
    • Korean Journal of Environment and Ecology
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    • v.26 no.4
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    • pp.512-527
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    • 2012
  • Jangdo Island (area $1.54km^2$) located in the western end of Dadohae Haesang National Park has been recognized as an prominent ecoregion possessing high moor and national biodiversity hotspot. In terms of the Z$\ddot{u}$rich-Montpellier School's phytosociology, we investigate the diversity of plant communities on the island and reevaluate the Jangdo wetland designated as Ramsar site. Ten physiognomic types of the Jangdo's vegetation were classified into 22 syntaxa (3 associations, 15 communities and 4 subcommunities). Jangdo wetland was actually denominated as 'eutrophic wetland' by Pharagmitetea and Orizetea rather than 'high moor'. Nevertheless, existence value of the Jangdo wetland is evaluated very high as a stepping stone for migratory birds and even plant dispersions. A new site of the northernmost distribution of Arachniodo-Castanopsietum sieboldii, which is a kind of cold-resistant phytocoenosis among the Camellietea japonicae of the warm-temperate broad-leaved forests, was described. Hosta yingeri-Carpinus turczaninovii var. coreana community and Carex wahuensis var. robusta-Juniperus chinensis var. procumbens community were described specifically as an endemic and an edaphic vegetation type, respectively. The unique Jangdo's vegetation reflects regional environmental conditions such as much higher frequency of frost-free days and the highest number of annual average foggy days in Korea and a well-developed aquifer in the depressed basin formed by differential erosion. We identified that human interventions (pasture, logging, forest fire, cultivation, etc.) has been involved intensively on every vegetation types, even though a rugged and inaccessible topography of the island. Particularly the Jangdo wetland has been recently threatened by fundamental distortion on hydrological system. We request an immediate establishment of the conservation prescription manual.

A taxonomic study on Lachnidae(Homoptera, Aphidoidea) of Korea (한국산 왕진딧물과(매미목, 진딧물상과)의 분류)

  • 이원구;서홍렬;황창연
    • Animal Systematics, Evolution and Diversity
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    • v.10 no.2
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    • pp.157-187
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    • 1994
  • This study includes the taxonomy , and a key to species of aphids in the family Lachnidae from Korea. Specimens examined in this study were collected from 24 kinds of plants. Samplings were accomplished at 95 localities in Korea from March, 1987 to August, 1994. A list of Korean lachnids are as follows. *1. Chinara atlantica (Wilson, 1919), *.2. C. cembrae(Seitner, 1936), *3. C. formosana (Takahashi, 1924), *4. C. fresai Blanchard, 1939, *5. C. idahoensis Knowlton,1935, 6. c. juniperi (de Geer, 1773), 7.C.kochi Inouye,1939, *8. C. laridicola (Matsumura, 1917), *9. C. laricis (Hartig, 2839), *10. C.longipennis (Matasumura, 1917), 11. C. orientalis (Takahashi, 1925), *12. C. pinidensiflorae(Essig & Kuwana, 1918), *13. C. piniformosana(Takahashi, 1923), *14 C. shinjii Inouye, 1938, *15. c. tujafilina (Del Guercio, 1909), *16 . c. watanabei Inouye, 1970, *17. C. togyuensis Seo. 1994. *18. C. deodarae Seo. 1994, *19. Eulachnus agilis (Kaltenbach, 1843), *20. E. pumilae Inouye, 1939, *21. E. thunbergi (Wilson, 1919), *22. Schizolachnus orientalis (Takahashi, 1924) , 23. Lachnus, Chosoni Szelegiewicz, 1975, 24. L. japonicus (Matsumura, 1917) , *.25. L. tropicalis 9van der Goot, 1916), *.26. Maculolachnus sumbacula (Walker, 1848), *27. M. paiki Seo. 1994, *28 Nipppolachnus piri Matsumura, 1917, 29. Stomaphis asiphon Szelegiewica, 1975, *30. S. japonica Takahashi, 1960, *31. S. yanonis Takahashi , 1918 , *32. Tuberolachnus salignus *(Gmelin, 1790). Of them , 27 species preceded by an asterisk were observed in this study, and keys to these 27 Korean lachnids are provided . The relationship between Korean lachnids and their host plants, and geogrpahical distribution are discussed.

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Petrochemical Study on the Cretaceous Volcanic Rocks in Kageo island, Korea (가거도(소흑산도)의 백악기 화산암류에 대한 암석화학적 연구)

  • 김진섭;백맹언;성종규
    • The Journal of the Petrological Society of Korea
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    • v.6 no.1
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    • pp.19-33
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    • 1997
  • This study reports the results about the petrography and geochemical characteristics of 10 representative volacanic rocks. The Cretaceous volcanic rocks distributed in the vicinity of the Kageo island composed of andesitic rocks, dacitic welded tuff, and rhyolitic rocks in ascending order. Sedimentary rock is the basement in the study area covered with volcanic rocks. Andesitic rocks composed of pyroclastic volcanic breccia, lithic lapilli tuff and cryptocrystallin lava-flow. Most dacitic rocks are lapilli ash-flow welded tuff. Rhyolitic rocks consists of rhyolite tuff and rhyolite lava flow. Rhyolite tuff are lithic crystal ash-flow tuff and crystal vitric ash-flow tuff with somewhat accidental fragments of andesitic rocks, but dacitic rocks. The variation of major and trace element of the volcanic rocks show that contents of $Al_2O_3$, FeO, CaO, MgO, $TiO_2$ decrease with increasing of $SiO_2$. On the basis of Variation diagrams such as $Al_2O_3$ vs. CaO, Th/Yb vs. Ta/Yb, and $Ce_N/YB_N$ vs. $Ce_N$, these rocks represent mainly differentiation trend of calc-alkaline rock series. On the discriminant diagrams such as Ba/La and La/Th ratio, Rb vs. Y + Nb, the volcanic rocks in study area belongs to high-K Orogenic suites, with abundances of trace element and ternary diagram of K, Na, Ca. According to the tectonic discriminant diagram by Wood, these rocks falls into the diestructructive continental margin. K-Ar ages of whole rocks are from andesite to rhyolite $97.0{\pm}6.8~94.5{\pm}6.6,\68.9{\pm}4.8,\61.5{\pm}4.9~60.7{\pm}4.2$ Ma, repectively. Volcanic rocks in study area show well correlation to the Yucheon Group in terms of rock age dating and geochemcial data, and derived from andesitic calc-alkaline magma that undergone low pressure fractional crystallization dominated plagioclase at <30km.

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Petrology of the Tertiary Basaltic Rocks in the Yeonil and Eoil Basins, Southeastern Korea (한반도 동남부 제3기 연일, 어일분지에 나타나는 현무암질암의 암석학적 연구)

  • Shim, Sung-Ho;Park, Byeong-Jun;Kim, Tae-Hyeong;Jang, Yun-Deuk;Kim, Jung-Hoon;Kim, Jeong-Jin
    • The Journal of the Petrological Society of Korea
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    • v.20 no.1
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    • pp.1-21
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    • 2011
  • Eoil basalt in the Eoil basin and Yeonil basalt and its related volcanic rocks in Guryongpo and Daebo area were researched and analyzed to purse the tectonic settings and magma characteristics of those Tertiary volcanic rocks in the south-east Korean peninsula. It is highly suggested that zoning, resorption and sieve texture in plagioclase and reaction rim in pyroxene indicate unstable tectonic environments and complex volcanism in the study area. Volcanic rocks from Janggi basin are identified as basalt and basaltic andesite in TAS diagram and sub-alkaline series in terms of magma differentiation. $Na_2O$ and $K_2O$ show positive trend however FeO, CaO, MgO and $P_2O_5$ indicate negative trend in Harker variation diagram with $SiO_2$. Basaltic rocks from Eoil area are identified as calc-alkaline series in AFM diagram and show medium K series calc-alkaline in $K_2O-SiO_2$ diagram. Compatible trace elements of Co, Ni, V, Zn, and Sc in Yeonil basalt show negative trend with crystallization but incompatible trace element of Ba, Rb show positive trend with $SiO_2$ 0.81~1.00 of $Eu/Eu^*$ value suggests minor effect of plagioclase fractionation in Yeonil basaltic rocks. Plagioclase composition of Eoil basalt ranges from $An_{63.46-98.38}\;Ab_{1.62-32.96}\;Or_{0-3.58}$ (anorthite-labradorite) in core to $An_{40.89-82.44}\;Ab_{17.10-46.43}\;Or_{0-12.68}$ (bytownite-labradorite) in rim. $^{87}Sr/^{86}Sr$ and 143Nd;t44Nd ranges 0.704090~0.704717 and 0.512705~0.512822 respectively. Negative linear trends in 87Sr/86Sr and $^{143}Nd/^{144}Nd$ correlation diagram indicate that magma produced Yeonil basalt and basaltic andesite has been originated as partial melting product of mantle wedge by subducting Pacific plate affected by oceanic crust with less effect of continental crust indicating calc-alkaline magma characteristics.

SHRIMP V-Pb Zircon Ages of the Granite Gneisses from the Pyeonghae Area of the northeastern Yeongnam Massif (Sobaeksan Massif) (영남(소백산)육괴 북동부 평해지역 화강편마암류의 SHRIMP U-Pb 저콘 연대)

  • Kim, Nam-Hoon;Song, Yong-Sun;Park, Kye-Hun;Lee, Ho-Sun
    • The Journal of the Petrological Society of Korea
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    • v.18 no.1
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    • pp.31-47
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    • 2009
  • We performed petrological, geochemical, and geochronological study for the Pyeonghae granite gneiss and the Hada leuco-granite gneiss intruding the Paleoproterozoic meta-sedimentary rocks (pyeonghae formation and Wonnam formation) of the Pyeonghae area located in northeastem part of the Yeongnam (Sobaeksan) massif. The Pyeonghae granite gneiss generally has higher abundance of mafic minerals (biotite etc.), and posesses higher ${Fe_2}{O_3}^t$, MgO, CaO, $TiO_2$, $P_{2}O_{5}$ contents but lower $SiO_2$ and $K_{2}O$ contents than the Hada leuco-granite gneiss which tends to have slightly high $Al_{2}O_{3}$ and $Na_{2}O$ contents and slightly high larger negative Eu anomalies. However both gneisses reveal very similar REE concentrations and chondrite-normalized patterns and apparently show differentiation trend affected by crystallization of biotite, plagioclase, apatite and sphene. Their peraluminous and calc-alkaline chemistry suggests tectonic environment of volcanic arc. SHRIMP Zircon U-Pb age determinations yield upper intercept ages of $1990{\pm}23\;Ma$ ($2{\sigma}$) and $1939{\pm}41\;Ma$ ($2{\sigma}$), and weighted mean $^{207}Pb/^{206}Pb$ ages of $1982{\pm}6.3\;Ma$ ($2{\sigma}$) and $1959{\pm}28\;Ma$ ($2{\sigma}$) for the Pyeonghae granite gneiss and the Hada leuco-granite gneiss respectively, showing overlapping ages within the error. Our study suggests that the Precambrian granitoids in this area intruded contemporaneously with the Buncheon granite gneissin volcanic arc environment.

Study on Contents of Paeoniflorin and Inorganic Components in Paeony Roots (시판(市販) 작약(芍藥)의 Paeoniflorin 및 무기성분(無機成分) 함량(含量))

  • Chung, Sang-Hwan;Suh, Dong-Hwan;Park, No-Kwuan;Lee, Suk-Hee;Kim, Ki-Jae;Lee, Kwang-Seok;Choi, Boo-Sul;Kang, Gaung-Hee
    • Korean Journal of Medicinal Crop Science
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    • v.1 no.2
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    • pp.178-183
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    • 1993
  • This study was carried out to investigate the contents of ash and inorganicelements in the herbaceous paeony roots collected from the markets of 9 regions in Korea. The contents of paeoniflorin ranged from 2.14% to 3.7%, and the average was 2.87%. The mean contents of ash was 4.2% and acid insoluble ash content was 0.55%. Total nitrogen of herbaceous paeony roots was 0.7%, phosphorus 0.69%, potassium 0.73%, calcium monoxide 1.02% and ferric oxide 82.15ppm respectively. The content of zinc ranged from 19.80ppm to 103.02ppm and the average was 34.59ppm ; this value showed some differences than other elements were, and the mean content of magnesium was 0.25%. The cadmium content showed 0.31ppm copper 4.95ppm, and plumbum 20.47ppm respectively. As above results, we could say that there was no health problems with local products, if we use a the herb medicine.

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