• Journal of Korean Society for Atmospheric Environment
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• v.29 no.1
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• pp.86-96
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• 2013

The realtime monitoring of radon ($^{222}Rn$) concentrations has been carried out from Gosan site, Jeju Island for three years of 2006~2008, in order to evaluate the background level and timely variational characteristics of atmospheric radon. The mean concentration of radon measured during the studying period was $2965mBq/m^3$ with its annual mean values in the range of $2768{\sim}3124mBq/m^3$. The relative ordering of the seasonal mean concentrations was seemed to vary such as winter ($3578mBq/m^3$) > fall ($3351mBq/m^3$) > spring ($2832mBq/m^3$) > summer ($2073mBq/m^3$). The monthly mean concentrations were in the order of Jan>Feb>Oct>Nov>Dec>Mar> Sep>Apr>May>Jun>Aug>Jul, so that the highest January value ($3713mBq/m^3$) exceeded almost twice as the July minimum ($1946mBq/m^3$). The hourly concentrations in a day showed the highest level ($3356mBq/m^3$) at around 7 a.m., increasing during nighttime, while reaching the lowest ($2574mBq/m^3$) at around 3 p.m. From the backward trajectory analysis for a continental fetch of radon, the high concentrations (10%) of radon matched with the air mass moving from the Asia continent to Jeju area. In contrast, the low concentrations (10%) of radon were generally correlated with the air mass of the North Pacific Ocean. In comparison by sectional inflow pathways of air mass, the radon concentrations were relatively high from the north China and the Korean peninsula.

• Journal of Korean Society of Archives and Records Management
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• v.15 no.3
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• pp.55-86
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• 2015

This paper aims to interrogate the layered and dependent structure of the modern and official document management in Korea and Japan from 1894 to 1910. The focus of its study is on documents related with the strategic infrastructure construction in Jeonbuk Province through an analysis from the perspective of historic archival studies. For this study, the chosen period was when Japanese imperialists were on their way to seize the Korean official archival system. As such, our objects are the documents connected with the institution of the Japanese resident-general system in Korea and its infrastructural constructions as part of Japan's war plans of invading the continent. Among others, we examined the documents of the strategic infrastructure construction around Jeonju in Jeonbuk Province by Imperial Japan, in order to wage the Sino-Japanese War and subdue the Donghak Peasant Revolution. More specifically, we illuminate the sources and organization of the approval of the original documents in a higher level that is relevant to the determination of political, financial, and personnel matters, which were designed for the Japanese governmental rule over Korea from the era of the Gabo Reform to the period of the Japanese resident-generals, as well as analyze the actual states of the official documents ina lower level, which were drawn up by Korean government and the resident-general. Consequently, this paper suggests that official Korean archival system at this time must be understood under the context of a layered and dependent structure within the vertical connections between Korea and Japan, and not from the point of view of a national history.

• The Journal of the Petrological Society of Korea
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• v.21 no.2
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• pp.193-202
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• 2012

There were three cycles of igneous activities from the late Paleozoic to early Cenozoic; Permian to Triassic, Jurassic, and Cretaceous to Paleogene. After the beginning of each igneous activity cycle, igneous activity became more frequent until its climax. It is noteworthy that A-type magmatisms are reported from near the ends of the all three igneous activity cycles. In addition, adakitic magmatisms occurred at the beginning of both the Permian-Triassic and the Cretaceous-Paleogene cycles. Most of the igneous activities during the late Paleozoic to early Cenozoic period were subduction-related. Therefore, transitions among beginning, proceeding, and closing of the igneous activity cycles would be intimately related with changes in directions of plate movements. In this context, I suggest following hypotheses. The closing of the Permian-Triassic igneous cycle was possibly a consequence of radical adjustment of plate motion occurred due to continental collision between north and south China blocks. Considering that no appreciable tectonic activities were recognized from the east Asian continent at the closing of the Jurassic igneous cycle, it seems that one of the strong events related with Gondwanaland-breakup and subsequent birth of the new oceans, which might cause sudden adjustments of plate motions. The closing of the Cretaceous-Paleogene igneous cycle seems to be caused as a consequence of the collision between India and Asia continents. Meanwhile, adakitic igneous bodies emplaced at the beginnings of the Permian-Triassic and Cretaceous-Paleogene cycles could be products of slab-melting during the early stages of the subduction.

• Journal of Environmental Health Sciences
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• v.33 no.5
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• pp.408-421
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• 2007

The concentration characteristics of atmospheric particle matters (PM) including $PM_{2.5},\;PM_{10}$, and TSP were evaluated through the measurement data of PM_{2.5}$ (fine particulate), PM_{10-2.5}$ (coarse particulate), and PM_{over-10}$ collected using a MCI (multi-nozzle cascade impactor) sampler of a three-stage filter pack in spring of 2006 in Iksan area. During the sampling period of 10-15 March and 24 days from 8 April to 2 May, 32 samples for PM of each size fractions were collected, and then measured for PM mass concentrations and water-soluble inorganic ion species. Average concentrations of $PM_{2.5},\;PM_{10}$, TSP were $57.9{\pm}44.1mg/m^3$, $96.6{\pm}89.1mg/m^3$, and $114.8{\pm}99.7mg/m^3$, respectively. Water-soluble inorganic ion fractions to PM mass were found to be 36.5%, 18.0%, and 11.1% for $PM_{2.5}$, $PM_{10-2.5}$ and $PM_{over-10}$, respectively. By showing the high concentrations of PM samples during Asian dust events, those three fractions of PM were distinguished between the samples of Asian dust event and the samples of no event. However, the increase of PM concentrations observed during Asian dust events showed a different pattern for some Asian dust events. The differences of those three fractions in the size distribution may depend on differences on place of occurrence of Asian dust storm and course of transport from China continent to Iksan area in Korea. However, the extent of PM mass contribution during Asian dust events was generally dominated by the coarse particles rather than the fine fraction of PM. The variations of water-soluble inorganic ion species concentration in those three PM fractions between the samples of Asian dust event and the samples of no event were also discussed in this study.

• International Commerce and Information Review
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• v.14 no.1
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• pp.47-65
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• 2012

Africa has got largely attention from around the world and industrial advanced countries mainly have focused their interest on the continent for the purposes of natural resources development or economic cooperation. Such is in part for their exploiting new logistics. Central America, Oceania and Africa are together now emerging as a new mecca for resources development and global logistics. Considering that Western countries are heavily investing in and preoccupying both social overhead infrastructure and logistics in Africa, it is expected that it will be new opportunities for domestic logistics companies. This research is focused on studying strategies for logistics companies to open Africa, especially Northern African market. For this, the method of questionnaire is applied for related companies. And it also considers proper time for the opening the market, how to enter, geographical market range and interests of countries there. From the result, it is important the timing for entering the market, which means competitive edge gets better with fast making inroads into the market. And strategic alliance is revealed more effective. In addition, geographical market range is another important factor in low infrastructure of logistics in Africa. It is shown that relations between governments have directly effect on business activities. It should be kept in mind that African countries have their big influences on the market.

• Journal of the Korean Geographical Society
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• v.42 no.5
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• pp.745-760
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• 2007

This study aims to categorize and analyze internationally standardized sea names based on their origins. Especially noting the cases of sea names using country names and dual naming of seas, it draws some implications for complementing logics for restoring the name East Sea. Of the 110 names for 98 bodies of water listed in the book titled Limits of Oceans and Seas, the most prevalent cases are named after adjacent geographical features; followed by commemorative names after persons, directions, and characteristics of seas. These international practices of naming seas are contrary to Japan's argument for the principle of using the name of archipelago or peninsula. There are several cases of using a single name of country in naming a sea bordering more than two countries, with no serious disputes. This implies that a specific focus should be given to peculiar situation that the name East Sea contains, rather than the negative side of using single country name. In order to strengthen the logic for justifying dual naming, it is suggested, an appropriate reference should be made to the three newly adopted cases of dual names, in the respects of the history of the surrounding region and the names, people's perception, power structure of the relevant countries, and the process of the standardization of dual names. In order to endow East Sea with the meaning of the east of the Eurasian continent, westerners' perception on the Far East should be elaborated in more detail.

• Spatial Information Research
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• v.10 no.1
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• pp.1-14
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• 2002

Due to the rapid development in information technology, countries of advanced information technology and multi-national information communication industries have expanding their invesment in constructing a cyber territory or a cyber city, and even a cyber globe that combines the real world with the cyber world. As such, in order to keep up with the competition with other countries to secure the Invisible Continent, Korea cannot afford to fall behind in the preparation and efforts to construct a cyber territory. Therefore in preparation for the inevitable establishment of a cyber territory, this study defined the concept of a cyber territory clearly and proposed a promotional strategy needed by the government for the establishment of a cyber territory. A cyber territory is 'the dynamic second territory that realizes various values in various aspects through organically combining innumerable active bodies in a surreal space and that are created by systematically and optimally connecting the physical topographical space and activity of the first nation to the cyberspace'. To explain further, a cyber territory is defined as another simulated space not only to manage the land systematically and deal with administrative services far the greater population, but also to contain economic activities of corporations and the citizens' everyday lives in a virtual reality by digitizing the entire territory including even the sea. In order to establish such cyber territory, it is necessary to revise related laws and policies, to foster related technology and industry as a main engine for national development, to promote public awareness, and to train related human resources.

• Journal of the Economic Geographical Society of Korea
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• v.23 no.3
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• pp.312-333
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• 2020

Korea-Africa relations date back to the period of independence of African countries. During this time, the ties between Korea and Africa has passed through stagnation, inconsistencies and weak diplomatic exchanges. Recently, Korea began to refocus its efforts towards Africa in order to revitalize their relations. This paper examines Korea's public diplomacy strategies towards Africa and how its various strategies are working in the interest of Korea as well as Africa. The study shows that Korea's renewed interest in Africa is primarily driven by the security threat from North Korea and the need to diversify its market for industrial goods as well as energy sources. The latter motives override Korea's interest in the continent. These motives are not at variance with those pursued by large powers like the US and China in Africa. Furthermore, the paper shows that Korea is employing a mixture of public diplomacy instruments in Africa with varied outcomes. Economic linkages between Korea and Africa are on an upward trajectory since the late 2000s. In order to build sustainable relations, the paper provides a number suggestions with far-reaching implications on Korea's public diplomacy towards Africa in the future.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.5 no.1
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• pp.133-164
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• 1981

"Jonkyongkak" which King, Sungjong of Yi dynasty established within Sungkyunkwan in 1475 is regarded as the first university library in Korea. On the basis of modern librarianship, however, it is desirable to recognize the fact that Keijo Imperial University Library is really the first university library in Korea. In this thesis, an attempt to study the Korean university libraries under the period of Japanese control is provided. Keijo Imperial University Library is the key institution in this study. This study will focus to review the following facts: 1) the historical background of Keijo. Imperial University Library; 2) the organization and staffing pattern, and budget of this library; 3) the acquisition policy and basic collection development plan of this library; 4) the library and other services of this library including readers services; 5) the relationship with other private college libraries; and 6) the impact of this library on the present Seoul National University Library. The followings are the outlined conclusions: 1. Japanese Government had established Keijo Imperial University Library in order to perform the colonial education policy of Korean peninsula. Furthermore, it was one of the import supporting agencies for the research activities which were necessary for Japan to govern the Southeast Asia including Korean Peninsula 2. The organization and staffing size and pattern of this library are much below to those of modern university libraries. They are somewhat below to the level which is necessary to perform the minimum basic library functions. 3. The priorities of book collection of this library are 1) humanities and social sciences especially, materials on Law are much emphasized; 2) pure sciences and 3) technologies and agriculture. Therefore, the quantity of the materials on the field of technology and agriculture is very small. 4. The acquisition policies of this library are deeply influenced by the Japanese Government's colonial policy of Korean peninsula and her aggressive policy of Chinese Continent. 5. The major contribution of this library to the present Seoul National University Library is the transfer of 550,000 volumes of books and library building, but this building is now removed according to the transfer of Seoul National University Campus. 6. The staffing pattern of this library was, however, much ahead of that times. Especially, the facts that professional librarians were eligible to be appointed as the director of this library, and they had the faculty membership including faculty rank should be highly appreciated.

• Ocean and Polar Research
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• v.41 no.4
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• pp.265-274
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• 2019

To trace the provenance of fine-grained sediments in response to the growth and retreat of glaciers (i.e., Ross Ice Sheet) that affects the depositional process, various kinds of analyses including magnetic susceptibility, granulometry, and clay mineral composition with AMS ¹⁴C age dating were carried out using a gravity core KI-13-GC2 obtained from the Central Basin of the Ross Sea continental margin. The sediments mostly consist of silty mud to sand with ice-rafted debris, the sediment colors alternate repeatedly between light brown and gray, and the sedimentary structures are almost bioturbated with some faint laminations. Among the fine-grained clay mineral compositions, illite is highest (59.1-76.2%), followed by chlorite (12.4-21.4%), kaolinite (4.1-11.6%), and smectite (1.2-22.6%). Illite and chlorite originated from the Transantarctic mountains (metamorphic rocks and granitic rocks) situated to the south of the Ross Sea. Kaolinite might be supplied from the sedimentary rocks of Antarctic continent underneath the ice sheet. The provenance of smectite was considered as McMurdo volcanic group around the Victoria Land in the western part of the Ross Sea. Chlorite content was higher and smectite content was lower during the glacial periods, although illite and kaolinite contents are almost consistent between the glacial and interglacial periods. The glacial increase of chlorite content may be due to more supply of the reworked continental shelf sediments deposited during the interglacial periods to the Central Basin. On the contrary, the glacial decrease of smectite content may be attributed to less transport from the McMurdo volcanic group to the Central Basin due to the advanced ice sheet. Although the source areas of the clay minerals in the Central Basin have not changed significantly between the interglacial and glacial periods, the transport pathways and delivery mechanism of the clay minerals were different between the glacial and interglacial periods in response to the growth and retreat of Ross Ice Sheet in the Ross Sea.