• Title, Summary, Keyword: imports

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Stopper equipped with a Low Vibration Floating Slab System Design (스토퍼가 장착된 저진동 플로팅 슬래브 시스템 설계)

  • Park, Sung-Jae;Ma, Chang-Nam;Park, Myung-Gyun;Lee, Du-Hwa
    • Proceedings of the KSR Conference
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    • pp.753-756
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    • 2011
  • Recently the construction of railway sections passing the central area of cities and stations under railway lines are increasing, and then it is urgently required to take the countermeasures against the railway vibration and the second-phase noise radiated from it. The most efficient countermeasure, out of technologies developed up to now, is the floating slab track which is the track system isolated from the sub-structure by springs. In other countries, the source technologies for anti-vibration design and vibration isolator - one of key components - have been developed and many installation experiences have been accumulated. However, in Korea, since the system design technology and technologies for key components are not yet developed, the foreign system are being introduced without any adjustment, and the key component, vibration isolator, depends on imports. In this study, analysis on floating slab system installed rubber mat and stopper is carried for the examination on the safety of floating slab system.

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Design of floating Slab according to Dynamic Load (동하중을 고려한 플로팅궤도 슬래브 설계)

  • Park, Sung-Jae;Ma, Chang-Nam;Park, Myung-Gyun;Lee, Du-Hwa;Jo, Su-Ik
    • Proceedings of the KSR Conference
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    • pp.268-272
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    • 2010
  • Recently the construction of railway sections passing the central area of cities and stations under railway lines are increasing, and then it is urgently required to take the countermeasures against the railway vibration and the second-phase noise radiated from it. The most efficient countermeasure, out of technologies developed up to now, is the floating slab track which is the track system isolated from the sub-structure by springs. In other countries, the source technologies for anti-vibration design and vibration isolator - one of key components - have been developed and many installation experiences have been accumulated. However, in Korea, since the system design technology and technologies for key components are not yet developed, the foreign system are being introduced without any adjustment, and the key component, vibration isolator, depends on imports. In this study, floating slab was divided into three spans, $k_{dynamic}$ use by examining reactions and member forces was to ensure safety.

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A Review on the discussion of the duty drawback system in Korea-EU FTA negotiations (한-EU FTA 협상에서 관세환급제도에 대한 논의와 경제적 효과)

  • Park, Hyun-Hee
    • International Commerce and Information Review
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    • v.12 no.2
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    • pp.213-237
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    • 2010
  • Duty refund taken exports of raw materials in the manufacture of goods for import duties paid, and refunds, as a system, enhance the price competitiveness of domestic exporters to promote exports is established for them. The duty drawback system is consumed in the production of export goods levied on imported inputs does not exceed the level of reimbursement is established within the WTO rules do not restrict the export support policy is one of. Korea-EU FTA negotiations is a drawback in the ongoing maintenance of claims, while the EU claims that the duty drawback system can not be negotiated until the end of the field of focus is discussed. Intermediate goods imports to Korea is a higher percentage was pointed out the importance of duty drawback, EU FTA, the duty drawback is not a party to remain exporters of raw materials, such as 3rd party can not go back because the benefits were opposed to. The final one-EU Concessions for the current duty drawback system was to maintain continuous.

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An Experimental Study on the Development of Soft Ground Firming Agent Using EAF Reduction Slag (전기로 환원 슬래그를 이용한 연약지반 고화재 개발에 관한 실험적 연구)

  • Lee, Kang-Seok;Lee, Yoon-Kyu;Choi, Jae-Seok;Han, Man-Hae
    • Proceedings of the Korean Geotechical Society Conference
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    • pp.998-1001
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    • 2010
  • Most firming agent used in Korea is cement-firming agent. Cement-firming agent absorb water for combination, and then it makes ettringite. Through this chemical process, soft ground is firmed by cement-firming agent. Although most cement-firming agent used in Korea made from CSA, it relies on imports. Therefore, the development of soft ground firming agent using new materials is required. In this study, we suggested that EAF reduction slag not used for anything in the steel industry is available for material of soft ground firming agent. If EAF reduction slag is used in soft ground firming agent, it will be possible to solve the problem with treatment of slag and improvement of soft ground.

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A Study on the Design of 34kW Cryogenic Induction Motor for LNG Spray Pump (34kW급 LNG Spray펌프용 극저온 유도전동기 설계에 관한 연구)

  • Jeong, Dong-Wook;Lee, Ki-Wook;Ryu, Jae-Ho;Park, Gwan-Soo
    • Proceedings of the KIEE Conference
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    • pp.918-919
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    • 2015
  • Because of environmental regulations in emissions control area, the demand for ships to use LNG as fuel is increasing. Orders for domestic shipbuilders to produce LNG carriers are steadily increasing. However, major appliances such as spray pump, main cargo pump and others have been relied on imports. Therefore, development of pump motor using at cryogenic temperature is necessary. Operating temperature of an induction motor is at $-163^{\circ}C$. At this low temperature, the resistivity of a motor coil is quite different from normal ones, and so does the torque characteristics of motor. This paper presents a designing method of a cryogenic induction motor for LNG pump. The variation of resistivity of motor coil is considered in the design process. The heat source such as core-loss, hysteresis-loss and copper-loss are analyzed to prevent the LNG evaporation which may cause the motor failure.

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A Study on the Design Characteries of Chi-pao Brand in China (중국 현대 치파오(Chi-pao) 브랜드의 디자인 특성 연구)

  • Ying, Liu;Soh, Hwang Oak
    • Journal of the Korean Society of Costume
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    • v.65 no.2
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    • pp.48-61
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    • 2015
  • Chi-pao is a kind of traditional clothes; it is regarded as a national costume, playing an irreplaceable role in the Chinese history. As China developed, the strict requirements on dresses did as well. History is a double-sided mirror,; we can know the past and we can find the direction ifor future development. when it comes to reform and openness, China imports foreign culture and exports domestic culture as well. This essay uses the history of Chi-pao as the background, consults the reference to analyse the brand of Chinese domestic Chi-pao characteristics, summarize the fashionable trend. Recently, Chi-pao is worn in many kinds of important occasions such as foreign affairs, public performances and so on. The purpose of this essay is to analyze the current situation of Chi-pao, make Chi-pao more international, and show the Chinese history to the world.

The Effect of Economic Sanction against North Korea on North Korea-China Trade

  • Cho, Sung-Taek;Kim, Hyuk-Hwang
    • International Area Studies Review
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    • v.20 no.3
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    • pp.23-44
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    • 2016
  • This study attempts to scrutinize the effectiveness of the international economic sanction on North Korea by analyzing the determinants of the North Korea-China trade with Chinese Customs House data classified under general, border, processing, bonded warehouse. The result shows that after international economic sanctions, North Korea-China trade was increased across types of trade. In particular, sanction-sensitive items were increased after sanctions and China also weakened the effectiveness of sanctions. To put it concretely, North Korea's food and fuel imports from china increased in processing and border trade. In the case of luxury good, it was increased in general trade. Strategy goods (weaponry) increased only in bonded warehouse trade. For China's import from North Korea, food and fuel were increased in total, border and bonded warehouse trade. Considering the features of each type of trade, these increase are presumed to have been playing a decisive role in weakening the effect of international sanction on North Korea.

Physical Properties of Matrix with Replacement Ratio of Biomass Fly Ash Based on Cement (시멘트 기반 바이오매스 플라이애시 치환율에 따른 경화체의 물리적 특성)

  • Kim, Dae-Yeon;Cho, Eun-Seok;Lee, Sang-Soo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • pp.209-210
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    • 2019
  • Current international concerns are the energy crisis due to climate change and depletion of fossil fuels due to global warming. Korea has a very high dependency on energy imports 93%. In Korea, 63% of the country is forested, and a power plant using wood biomass is being built in Korea. Biomass fly ash, a by-product of biomass energy generation, is now being discarded. There is little research to utilize discarded biomass fly ash. Therefore, this study aims to solve the environmental problems, develop new mixed materials, improve the quality and utilize the biomass fly ash, which is a by-product of the industrial waste. As a result of the experiment, the flowability decreased as the replacement ratio of biomass fly ash increased. As the replacement ratio of biomass fly ash decreased, the amount of air content.

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Exchange Rate Volatility: Empirical Evidence from Somalia in 2010

  • Mohamud, Isse Abdikadir
    • Journal of Distribution Science
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    • v.12 no.3
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    • pp.99-103
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    • 2014
  • Purpose - The objective of this study was to examine the volatility of the exchange rate of the Somali shilling (SoSh) during 2010, especially the exchange rate between the Somali shilling and US dollar. Research design, data, and methodology - The study employed aquantitative research design; the data was analyzed using contents analysis for the data pertaining to the exchange rate between the US dollar and Somali Shilling in 2010. Results - The main findings were that the exchange rate was very volatile during 2010 because of three sources: (1) Imbalance of demand and supply in the money market, (2) People adopting the US dollar as the medium of exchange forgoods and services, thereby reducing the circulation of the SoSh, and (3) Lack of a strong central bank. Conclusions - The study suggested three possible remedies: the establishment of an effective central bank that matches the demand and supply of the currencies, adoption of the Somali shilling as the official currency base for the prices of commodities, and minimizing the imports into the country and maximizing its exports, to support the strengthening of the Somali shilling.

Modeling Effect of Exchange Rate Volatility on Growth of Trade Volume in Pakistan

  • Siddiqui, Muhammad Ayub;Erum, Naila
    • The Journal of Asian Finance, Economics and Business
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    • v.3 no.2
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    • pp.33-39
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    • 2016
  • This study empirically evaluates the impact of exchange rate volatility, foreign direct investment, terms of trade, inflation, and industrial production and foreign exchange reserves on Pakistani trade volume over the period of 1975-2010 using quarterly data set. The study employs financial econometrics methods such as Augmented Dickey Fuller (ADF) test GARCH (1, 1) technique and Almon Polynomial Distributed Lag (APDL) models to estimate the relationship of variables. Findings of the study are in accordance with theoretical relationships presented by Clark, Tamirisa, Wei, Sadikov, & Zeng (2004), McKenzie (1999), Dellas & Zilberfarb (1993) and Côté (1994). These findings are also in accordance with the empirical studies which support positive relationship of exchange rate volatility and exports presented by Hsu & Chiang (2011), Chit (2008), Feenstra & Kendall (1991), Esquivel & Larraín (2002) and Onafowora & Owoye (2008). Findings of the study in terms of imports are supported by the studies such as Lee (1999), Alam & Ahmad (2011) and Arize (1998). The study also recommends some very important policy prescriptions.