• 제목/요약/키워드: korea-russia

검색결과 677건 처리시간 0.03초

Hesperinidae (Diptera: Bibionomorpha) a new family from the Korean Peninsula

  • Podenas, Sigitas;Park, Sun-Jae;Kim, A Young
    • Journal of Species Research
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    • 제9권2호
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    • pp.170-173
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    • 2020
  • Research on Korean nematocerous flies (Diptera: Nematocera) was started by the National Institute of Biological Resources in 2012. This publication is a continuation of our previous work. During the season of 2019 insects were collected in Odaesan National Park by the researchers from Korea University. Among these samples, two specimens belonging to the family Hesperinidae, which was previously unrecorded from Korea, were noticed. This family is known from countries bordering Korea (East Siberia and Far East of Russia, Hokkaido Island of Japan), thus occurrence of hesperinid flies was expected on the Korean Peninsula. Only one genus Hesperinus Walker, 1848 with eight species belong to this family. They are developing in decaying wood of deciduous trees. Hesperinus rohdendorfi Krivosheina & Mamaev, 1967, which was known from East Siberia and Far East of Russia is recorded from South Korea. Redescription and photographs of the most important taxonomical details are presented.

러시아 기록물 분류체계의 발전 러시아국립역사기록보존소(RGIA)를 중심으로 (Historical Development of Russian Principle on Arrangement and Classification Archives : In Case of Russian State Historical Archive(RGIA))

  • 방일권
    • 기록학연구
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    • 제7호
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    • pp.75-105
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    • 2003
  • Russian State Historical Archive (Rossiiskii gosudarstvennyi istoricheskii arkhiv - RGIA) received its present name in June 1992, and before 1961 was known as TsGIA. RGIA holds the major records of high-level and central state and administrative institutions and agencies of tsarist Russia from the eighteenth century to 1910s (except the records of the Army, Navy, and the Ministry of Foreign Affairs), as well as fonds of social organizations, institutions, and individuals of prerevolutionary Russia. The main goal of this article is to assist understanding russian principle on arrangement and classification archives with its historical development focusing on one of the biggest historical archive in Russia. The primary set of historical records in RGIA remain arranged in 3-steps classification system: fond (collection) -- opis' (inventory) -- delo (file). In this general survey of RGIA author offers detailed information on the collection of archives and the system for classification of its huge amounts of primary sources in connection with influence upon historical studies. Despite the general economic crisis Russian archives are struggling to keep their doors open for public research and are exerting their energies in present electronic information to scholars and other researchers from throughout the world. The result, however, is not rewarded enough, considering the effort involved.

Regime Dependent Volatility Spillover Effects in Stock Markets Between Kazakhstan and Russia

  • CHUNG, Sang Kuck;ABDULLAEVA, Vasila Shukhratovna
    • The Journal of Asian Finance, Economics and Business
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    • 제8권8호
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    • pp.297-309
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    • 2021
  • In this study, to capture the skewness and kurtosis detected in both conditional and unconditional return distributions of the stock markets of Kazakhstan and Russia, two versions of normal mixture GARCH models are employed. The data set consists of daily observations of the Kazakhstan and Russia stock prices, and world crude oil price, covering the period from 1 June 2006 through 1 March 2021. From the empirical results, incorporating the long memory effect on the returns not only provides better descriptions of dynamic behaviors of the stock market prices but also plays a significant role in improving a better understanding of the return dynamics. In addition, normal mixture models for time-varying volatility provide a better fit to the conditional densities than the usual GARCH specifications and has an important advantage that the conditional higher moments are time-varying. This implies that the volatility skews implied by normal mixture models are more likely to exhibit the features of risk and the direction of the information flow is regime-dependent. The findings of this study contain useful information for diverse purposes of cross-border stock market players such as asset allocation, portfolio management, risk management, and market regulations.

상황인식 및 의사결정지원을 위한 국방AI기술의 성숙도 수준비교 (A Comparison for the Maturity Level of Defense AI Technology to Support Situation Awareness and Decision Making)

  • 권혁진;주예나;김성태
    • 시스템엔지니어링학술지
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    • 제18권1호
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    • pp.90-98
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    • 2022
  • On February 12, 2019, the U.S. Department of Defense newly established and announced the "Defense AI Strategy" to accelerate the use of artificial intelligence (AI) technology for military purposes. As China and Russia invested heavily in AI for military purposes, the U.S. was concerned that it could eventually lose its advantage in AI technology to China and Russia. In response, China and Russia, which are hostile countries, and especially China, are speeding up the development of new military theories related to the overall construction and operation of the Chinese military based on AI. With the rapid development of AI technology, major advanced countries such as the U.S. and China are actively researching the application of AI technology, but most existing studies do not address the special topic of defense. Fortunately, the "Future Defense 2030 Technology Strategy" classified AI technology fields from a defense perspective and analyzed advanced overseas cases to present a roadmap in detail, but it has limitations in comparing private technology-oriented benchmarking and AI technology's maturity level. Therefore, this study tried to overcome the limitations of the "Future Defense 2030 Technology Strategy" by comparing and analyzing Chinese and U.S. military research cases and evaluating the maturity level of military use of AI technology, not AI technology itself.

Struggling for a New European Order: Salvaged or Newly Shaped

  • Sungwook Yoon
    • 분석과 대안
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    • 제8권1호
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    • pp.5-31
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    • 2024
  • The US-led and European partners supporting liberal international order has dwindled. A number of research has been conducted to explore reasons, starting point, the possibility of resurrection, and even the future scenarios of the international order. This is particularly important for the EU, in that the EU was built for a world that is peaceful, multilateral and driven by compromise inseparable from the liberal international order. The current situation of the crisis in the international order is also important to emerging powers notably China and Russia which seek for a new order best suitable for their own interests. In this sense, this paper explains the significance of the liberal international order to the EU, the necessity of salvaging an order or creating a new order, and important variables - elections held in 2024 across the EU, in the European Parliament, and the US, Russia's invasion of Ukraine, trans-atlantic partnership and EU-China relations - which possibly affect the EU to establish a new European order. In fact, the EU is unlikely to take the lead in forming a new international order. Nonetheless, the first task the EU should do is to acknowledge the crisis situation at present and to make a decision of the EU's position and role regarding saved, reformed or newly shaped order.

Competitive Advantages and Disadvantages of Trans-Siberian Railway Route -Case study of Korea and Japan-

  • Tsuji, Hisako
    • International Journal of Railway
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    • 제6권4호
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    • pp.139-147
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    • 2013
  • TSR (Trans-Siberian Railway) route is losing price competitiveness versus Deep Sea route in the transportation from East Asia to Europe, including Moscow. To further attracting the containers to the TSR route, it will be necessary (1) to keep competitive through rate, linked to fluctuating Deep Sea rate; (2) to strengthen speed advantage; (3) to enforce seamless transportation system, including simplified customs clearance procedures. In transportation to Central Asia from East Asia (Korea and Japan), TSR is competitive versus TCR (Trans-China Railway), depending on destinations. Korea has been the leader in revitalizing the TSR route since 2000. Key contributors were affluent export containers to Russia and Central Asia, port of Busan, efficient maritime transport network to Far East Russia, and Korean forwarders' persistent efforts for activating the market. Korea and Japan have a possibility of cooperation in using the TSR route efficiently, such as organizing a joint block train to a same destination.

Heat source control intelligent system for heat treatment process

  • Lee, JeongHoon;Cho, InHee
    • International journal of advanced smart convergence
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    • 제11권4호
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    • pp.28-40
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    • 2022
  • Although precise temperature control in the heat treatment process is a key factor in process reliability, there are many cases where there is no separate heat source control optimization system in the field. To solve this problem, the program monitors the temperature data according to the heat source change through sensor communication in a recursive method based on multiple variables that affect the process, and the target heat source value and the actual heat treatment heat source to match the internal air temperature and material temperature. A control optimization system was constructed. Through this study, the error rate between the target temperature and the atmosphere (material surface) temperature of around 10.7% with the existing heat source control method was improved to an improved result of around 0.1% using a process optimization algorithm and system.