• Korean Journal of Weed Science
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• v.17 no.2
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• pp.147-156
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• 1997

The survey of weed population in apple orchard was conducted to investigate basic information on weed flora and its ecology at 27 locations in 1996. The weed species observed include 7 species of grasses, 60 species of broadleaves and 2 species of sedges, and the ratio of annual weed vs perennial weed was 64 : 36. Major dominant weed species by frequence were Chenopodium album, Capsella bursa-pastoris, Digitaria sanguinalis, Rorippa islandica, Alopecurus aequalis and Erigeron canadensis. While, on the basis of dry weight, the most dominant weeds were C. album followed by E. canadensis, A. aequalis, R islandica and R indica. The dominant weed species in middle-north Kyeongbuk region were C. bursa-pastoris, C. album, R indica and R islandica, were E. canadensis, Persicaria hydropiper, A. aequalis and Arenaria serpylliforia in Chungbuk region and were A. aequalis, E. canadenris and R islandica in Honam region.

• The Journal of Korean Philosophical History
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• no.54
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• pp.9-42
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• 2017

It is as necessary as ever to make constant efforts to overcome the regional strife between the eastern and western parts of Korea and come to a mutual understanding. To achieve this, we must endeavor to correct Korean people's distorted understanding of the history of Korean philosophical thoughts. Ordinary Koreans commonly and mistakenly associate the academic circles of Korean Neo-Confucianism with certain regions by which to divide them into Giho School and Yongnam School and then go as far as associating the schools and parties and pegging them 'Namin'(南人) to refer to as the followers of Yongnam School and 'Seoin'(西人) as the followers of Giho School. Such false notions must be corrected. During the reign of King Seonjo, political factions of Joseon were split into Yongnam and Giho, or East and West. At the time, the two cardinal directions East and West were only used to refer to the eastern and western parts of Seoul, and not Yeongnam(East) and Giho(West) of the Korean Peninsula. Therefore, the factional split at the time has nothing to do with regional cleavages. In fact, a majority of scholars representing Korean Neo-Confucianism maintained a friendly relationship regardless of the school, party, and region. Many leading scholars in the middle of the Joseon Dynasty namely Jo Sik(曺植)/Seong Woon(成運), Lee Hwang(李滉)/Ki DeaSeung(奇大升), Lee Hwang(李滉)/Lee Yi(李珥), Noh Susin (盧守愼)/Lee Yi, the ones in the late Joseon Dynasty -Jeong Gyeong Se(鄭經 世)/Kim Jang-Saeng(金長生), Jeong Gyeong Se(鄭經世)/Song Joon Gil(宋浚吉), and also those at the end of the Joseon Dynasty such as Kwak JongSeok(郭鍾錫) and Kim BokHan(金福漢) deeply respected each other and had a close friendship rooted in their academic commitment. The friendship between the leaders of Giho and Yongnam is a testimony to the high level of their character, academic achievement, and intellect. More than ever, such intangible intellectual and cultural resources drawn from Korean tradition must be utilized to the fullest. From this point on, we need to further promote the friendship and mutual understanding the scholars of Yongnam(Gyeongsang-do), Gyeonggi, Honam (Jeolla-do), and Hoseo(Chungcheong-do) enjoyed, and use them as a cognitive basis for harmony between the eastern and western parts of the country. These invaluable assets can be specifically used in the promotion of exchange between the local autonomous governments of the regions where above-mentioned scholars built an amicable relationship, joint commemorative events, exchange between families of the scholars of both regions, opening of special exhibitions dedicated to the harmony between Yongnam and Giho at museums in the two regions, co-organization of local festivals, joint operation of culture programs, and relationship and exchange between the 'seowons' in both regions, through which to promote the long history of exchange between the scholars of the past and utilize it in joint projects.

• (The) Research of the performance art and culture
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• no.34
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• pp.355-382
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• 2017

In this study, pieces of statements of sinawi successors, which served the ground of sinawi theory of Lee(that are found only in reports and theses) were searched from notebooks or cassette tapes of Lee. Then, this study tried to trace the process that the theory of sinawi was established based on the fieldwork of sinawi and relevant data, and to shed light on the significance. With the understanding from the early days that life of minsokak can be found in musical scenes in the region, Lee wandered around the scenes of minsokak(folk music) in the nation, recorded minsokak, and collected dialogues with successors of minsokak with about 2,000 cassette tapes and 300 notebooks. Especially, in the fieldwork data on sinawi that Lee possesses contain dialogues with the newly found sinawi successors that Lee found in the scene of sinawi in Gyeonggido province, Jeollado province, and Gyeongsangdo province over numerous visits for over 20 years from the early 1970s. Sometimes the record includes improvised sinawi performance. As the fieldwork of sinawi by Lee was conducted comparatively early, there are a lot of testimonies of successors who remember the sinawi scene of the past. Using these data, Lee published theories related to sinawi on reports and theses. His representative thesis is about 'Sinawi Chung'(1979). After listening to the testimony of Younghee Ji, the master of Gyeonggi haegeum sinawi in his first fieldwork of sinawi, he started his research on sinawi chung of piri, daegeum, and haegeum in Gyeonggido province and Honam area. Based on the testimonies on sinawi chung of 11 sinawi successors, Lee published 'Sinawi Chung'. In 1987, he extended the scope his research to sinawi-kwon(圈), which includes Gyeongnam area, found 12 new sinawi successors in Gyeonggi, Honam, and Gyeongnam areas, and based on their testimonies, complemented the theory of sinawi chung and published it. Fortunately, most of the dialogues with sinawi successors quoted in his reports or theses are recorded in his notebooks or cassette tapes. When these data are released, it is expected that a new theory of sinawi or minsokak will be born.

• Economic and Environmental Geology
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• v.4 no.1
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• pp.11-18
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• 1971

The geotectonics and geomorphic structure of Korea resulted from the Song-rim Disturbance and the Daebo orogenic movements. Afterward this mountainous peninsula underwent several geological changes on a small scale, and it was also claimed that the steady rising of the elevated peneplain of the eastern coast and the submerging of the southwestern coastal area are largely due to the tilted block movement. These views have been generally accepted good in several ways, but they are limited in range or lacking in theoretical integration. The present writer investigated the geology of the Mt. Chi-ri-san and the Honam coal mining area for a geological map in 1965, respectively. The results of these studies convinced the present writer that the conventional views, which were based upon a theory of lateral pressure should be reconsidered in many respects, and more recent studies made it clear that the morphological development in the southwestern area can be better explained by the orogenic movement and rock control. The measurement of submerging speed of the western coastal area (Pak. Y. A., 1969) and a new account on the geology and tectonics of the Mid-central region of South Korea (Kim O.J., 1970) act as an encouragement to a new explanation. The present writer's researches on the extreme southwestern portion of the peninsula show that the steady submerging of this area cannot be attributed to a simple downthrown block phenomenon caused by block movement. It is no more than the result of the differential movement of uplifting in the eastern and western coastal areas and the rising of sea-level in the post-glacial period. This phenomenon could be easily explained by the comparison of the rate of rise in sea-level and amount of heat flow between Korea and other areas in the world. The existance of the erosional planes in the Sobaik-San ranges also provide an evidence of an upheaval in the western coast area. Though the Sobaik-San ranges largely follow the direction of the Sinian system. They consist of the numerous branches, whose trends run more or less differently from their main trend because of the disharmonic folding, are converged into Mt. Sobaik-San and Chupungryung. The undulation of the land is not wholely caused by orogenic movements, where as the present writer confirmed that the diversity of morphological development is the direct reflection of geological conditions such as rocks and processes which constitute the basic elements of geomorphic structure. An east-west directed mountain range which could be named as Hansan mountain range, was claimed to be oriented by the joint control. The geological conditions such as a special erosion and weathering of agglomerate and breccia tuff usually produce pot-hole like submarine features which cause the whirling phenomenon at the southwestern coast channel.

• Journal of the Korean Chemical Society
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• v.40 no.8
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• pp.557-564
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• 1996

FAB CAD MS/MS(Fast Atom Bombardment Collision Activated Dissociation Mass Spectrometry/Mass Spectrometry) was used to study different degree of bond stability according to the linkage positions of alkali cationized $(Na^+, Li^+, K^+, NH_4^+)$ stereoisomeric and synthetic oligosaccharides. The alkali metal cations were much more stable, requiring over -40 eV of collision energy vs. only -10 eV for the protonated forms. Of the cations, the potassium cationized trisaccharides were more stable than the others. They would not yield fragment ions under the conditions of collision available in triple quadrupole. Other cationized species exhibited decreasing stability in the series $Nap^+>Li^+>NH_4^+$ using 0.8 mTorr argon pressure in the collision cell. Metal cations of the oligosaccharides maintained charge principally on the amino sugar as shown by shift of all the fragment ions containing the amino sugar. The reason for the higher stability of the metal cationized form is the formation of crown ether-like bond around metal cations, N-acetyl group on GlcNAc and oxygens on fucose moiety. Depending on the metal sizes and the conformation of linkage-isomeric region, cationized species gave linkage dependent fragment patterns and exhibited stability in the series 1-6 > 1-4 > 1-3 linkage.

• Journal of the Korean association of regional geographers
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• v.1 no.1
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• pp.45-60
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• 1995

The purpose of this study is to classify the Korean precipitation regions on the basis of the characteristics of extratropical cyclonic precipitation. From now on, extratropical cyclone is called cyclone in short. By using factor analysis and Ward method in cluster analysis, precipitation regions on the basis of the characteristics of cyclonic precipitation are classified The principal data used in this study are daily precipitation records obtained from 60 weather stations of the Korea Meteorological Service during the ten years($1981{\sim}1990$), and weather charts published by the Japan Meteorological Agency. The results obtained in this study are summarized as follows: (1) In the factor analysis using 43 variables which have relation to the extratropical cyclonic precipitations, They are seven factors whose eigenvalues are above 1.0. This explains 86 percent of total amount. The first factor explains the characteristics of precipitation in the middle-west area and its contribution degree has the highest 10.9 percent. (2) According to the cluster analysis method of Ward, extratropical cyclonic precipitation regions are classified seven macro regions(such as Kyungki and North Youngseo, Youngdong and Ullungdo, Hoseo and South Youngseo, Honam and Northwest Chejudo, Southeast Chejudo, North Youngnam, and South Youngnam), 22 meso regions. (3) The characteristics of precipitation regions have relations to the path of cyclone, the direction of air inflow and the strike of mountain ranges. As the conclusion, the Central China Low brings much precipitation in the southern coast and southern area of Korea as moving to the northeastward. The North China Low moves eastward and brings much precipitation in the western area of the Taeback mountain ranges. The probability of extratropical cyclonic precipitation is the lowest in the inland of Yeongnam and the eastern coastal areas which belong to the rain shadow region. Namely, The seasonal and spatial characteristics of precipitation are closely associated with the path of cyclone and the direction of air inflow according to its passage, and the strike of mountain ranges.

• Journal of the Korean Geographical Society
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• v.41 no.1 s.112
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• pp.1-21
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• 2006

Abstract The purpose of this paper is to analyze production and innovation networks of manufacturers in the rural, long-live areas of Gangwon Jeju and to suggest an ideal regional development model of rural areas in the knowledge-based information age. For this purpose, we compared the areas of Gangwon Jeju with the long-live belt areas in the rural pan of the Honan region and Gwangju Jeonju, the urban part of Honam. The findings from the study are summarized as follows. Firstly, the stronger the local networks in terms of supply of the necessary input materials and labor, the more successful the manufacturing industry is in the given area. Secondly, the more diverse and lasting the networks (in terms of the location of manufacturers, local area and national area) and cooperation agents(businesses, research institutions, the local government, the central government) they have, the more prosperous the manufacturing industry is. These results indicate that the successful development model for rural areas requires that we take the approach of fostering potential innovation capabilities of total areas by fully utilizing their innate resources so as to create an internal cooperative network and further build extensive networks encompassing external entities to create a virtual innovation cluster.

• Journal of the Korean Society of Food Science and Nutrition
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• v.35 no.3
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• pp.383-387
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• 2006

Microbiological hazard analysis of foodservice facilities and utensils of 6 hospitals in the Honam region was evaluated. In the microaerosol evaluation, the microbial counts of dinning table, kitchen, and freezer were comparatively high, and it indicated the microbial contamination of these facilities should be effectively managed. In the microbiological hazard analysis evaluation of cooking utensils and appliances, the total plate counts of cutting boards, knife, and meal plates were comparatively high but did not reveal significance. The counts of coliforms, Staphylococcus aureus and Escherichia coli, were lower than the general limit of microbial contamination, and the microbiological safety of the cooking utensils and appliances were satisfactory. In the microbial safety evaluation of side dishes, microbial counts of heat-cooked foods were generally low and microbiological hazards of these side dishes were comparatively low.

• Journal of the Korean association of regional geographers
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• v.11 no.3
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• pp.410-423
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• 2005

The southern coastal area of Korean peninsula maintains unique natural views, social environment and tourism infrastructure. Even though the coastal area has world-class tourism resources and a great potential for development, it was an outsider from the tourism development in Korea. The coast development has recently reemerged because of increased tourism demand in the Northeast Asia, however, increased interest for the outstanding marine tourism resources and the marine culture, improvement of accessibility to the coast Considering these characteristics, the southern coastal area will be grown to a marine resort-belt, which will serve as a marine tourism hub in the Northeast. In the long run, it can be developed for leisure residential space with environment-friendly well-being fashion, new growing area that continuously drives the local development and area for a mutual development between Yeongnam and Honam Region. To accomplish this vision, several strategic matters should be resolved. Mall strategic issues are as follows: the loosening related rules and regulations that limit the development, legislation of a special law for tourism promotion, supporting for investment in public service and strategic investment, establishment of a marine tourism route connecting China-Korea-Japan, formulating new planning for Hallyo-Haesang Marine Park, designation of special marine tourism development zone, and invitation of the World Expo 2012.

• International Journal of Oral Biology
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• v.42 no.4
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• pp.155-161
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• 2017

Teeth and bones are highly mineralized tissues containing inorganic minerals such as calcium phosphate, and a growing number of evidences show that their mineral content is associated with many diseases. Although the quantification of mineral contents by micro-computed tomography(micro- CT) has been used in diagnosis and evaluation for treating bone diseases, its application for teeth diseases has not been well established. In this study, we attempted to estimate a usefulness of a high-resolution micro-CT in analysis of human teeth. The teeth were scanned by using the Skyscan 1172 micro-CT. In order to measure tooth mineral content, beam hardening effect of the machine was corrected with a radiopaque iodine-containing substance, iodoacetamide. Under the maximum resolution of $6.6{\mu}m$, X-ray densities in teeth and hydroxyapatite standards were obtained with Hounsfield unit (HU), and they were then converted to an absolute mineral concentration by a CT Analyzer software. In enamel layer of cusp area, the mean mineral concentration was about $2.14mg/mm^3$ and there was a constant mineral concentration gradient from the enamel surface to the dentinoenamel junction. In the dentin of middle 1/3 of tooth, the mean mineral concentration was approximately $1.27mg/mm^3$ and there was a constant mineral concentration gradient from the outer of root to the pulp side, ranging from 1.3 to $1.06mg/mm^3$. In decay region of dentin, the mineral content was gradually decreased from the intact inner side to the decayed surface. These results suggest that high-resolution micro-CT can be as a useful tool for non-invasive measurement of mineral concentration in teeth.