• Title/Summary/Keyword: Reserves

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Effect of Cutting Freqensy and Leavel of Nitrogen Fertilization on Carbohydrate Resreves of Reed Canarygrass (예취빈도 및 질소시비수준이 Reed Canarygrass의 저장탄수화물함량에 미치는 영향)

  • 서흥종;육완방
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.12 no.2
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    • pp.89-97
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    • 1992
  • This experiment was attempted to investigate the effects of growing stage, cutting frequency and the level of nitrogen fertilization on the change of carbohydrate reserves in reed canarygrass(Pha1aris arundinacea L.). The results obtained were as follows: The amount of carbohydrate reserves appeared to markedly decrease up to critical level after the cutting in hot and dry weather season. During the growing stage, the amount of carbohydrate reserves decreased just after the cutting and also during the period of flourishing elongation of reed canarygrass. However, it began to increase sharply from the end of September for wintering. Two cutting system showed the highest mean value(19.53 %) of carbohydrate reserves and those of three, five and four cutting system was 15.32 %. 14.73 %, and 14.60 % respectively. Reed canarygrass with no nitrogen fertilization resulted in 17.17% of carbohydrate reserve, however there was no singificant difference among various levels of nitrogen fertilization. In respect of regrowth. 3 cutting system showed the most effective cutting frequency, however 4 or 5 cutting system had a decreasing tendency of regrowth.

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Variation of Fat and Protein Reserves in Wintering Dunlin, Calidris alpina (월동기 민물도요 Calidris alpina 의 지방과 단백질의 변화)

  • 권기정;황규황
    • Journal of Environmental Science International
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    • v.1 no.1
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    • pp.23-27
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    • 1992
  • The changes of pectoral muscle size (as an index of protein reserves) and fat reserves (as an index of lipid) were measured in wintering Dunlin during 1988 -1989 on two estuaries located in the south coast of Korea. The mean of lean mass of February population was greater(11.8%) than that of October population. SMI of October population was greater(4.5%) than that of February population and lipid index of October population also greater(1.6%) than that of February population. This show that the body condition of October population is better than February population. The mean of fat and protein reserves of 22 % of Dunlin arriving on October for their wintering were higher than that of others, this group seems to continue their migration to south further and 11% of the wintering population seems to starve during winter.

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An Empirical Analysis on the Trade Policy and Its Effectiveness to International Reserves Implemented by Emerging Markets (신흥경제권에 있어서 통상정책과 외환보유고의 상관관계에 관한 실증분석)

  • Park, Suk-Gang;Park, Bok-Jae
    • International Commerce and Information Review
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    • v.15 no.3
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    • pp.41-62
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    • 2013
  • This paper, the accumulation of foreign exchange reserves in the financial systems of emerging markets mid-to long-term impact on how investigated. The accumulation of foreign exchange reserves in emerging markets is a highly effective means to prevent the recurrence of another financial crisis as well as to minimizing risks of financial crisis. By examining the economic effects of excessive accumulation of foreign exchange reserves on factors such as foreign liabilities, domestic consumption, domestic investment and economic growth from a mid-to long-term perspective, it reduced domestic consumption, but on the other hand, led to the expansion of the trade-related industries based on increase of exports. Although China implements a policy to substantially increase domestic investment, other emerging market countries have stagnant domestic investment activities due to excessive accumulation of foreign exchange reserves. Such fact signifies that excessive accumulation of foreign exchange reserves increases potential risks by depressing the mid-to long-term economic growth through the scale down of trade-related industries.

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A Note on Estimating and Managing Groundwater Reserves (지하수 부존량 평가와 관리에 대한 소고)

  • Lee, Byung Sun;Park, Jong Hwan;Myoung, Wooho;Son, Joohyeong;Lee, Sanghaw;Shim, Gyuseong;Song, Sung-Ho
    • Journal of Soil and Groundwater Environment
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    • v.23 no.6
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    • pp.28-36
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    • 2018
  • This study was conducted to estimate groundwater reserves within a designated depth. Three methods were applied to one representative county in southern Gyeongsang province, South Korea, to estimate the groundwater reserves in the aquifers. Estimated amounts of groundwater reserves in the region ranged from $20.2{\times}10^9m^3$ to $68.7{\times}10^9m^3$ (average $37.9{\times}10^9m^3$). Groundwater recharge obtained with a recharge ratio of 16.6% was $1.1{\times}10^9m^3/year$. Exploitable groundwater with an assumption of decadal-cycle minimal rainfall of 977.0 mm/year was approximated as 72% ($0.8{\times}10^9m^3/year$) of the total replenished water by recharge. The volume of recharge and exploitable water accounted for only 1.1% and 0.8% of groundwater reserves, respectively, which indicates substantial capacity of the reservoir to supply groundwater in an event of unexpected droughts. Nonetheless, each groundwater well should strictly comply with its allocated pumping rate to avoid alluvial groundwater depletion.

The Impact of Financial Integration on Monetary Policy Independence: The Case of Vietnam

  • TRAN, Ha Hong;LE, Thao Phan Thi Dieu;NGUYEN, Vinh Thi Hong;LE, Dao Thi Anh;TRINH, Nam Hoang
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.2
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    • pp.791-800
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    • 2021
  • Along with the trend of financial globalization, Vietnam has undergone a process of increasing financial integration. The great capital inflow poses a problem for the monetary policy's ability to follow a planned target during the changes in the global financial markets. This paper aims to examine the impact of financial integration on monetary policy independence in Vietnam and investigate the role of foreign exchange reserves on this relationship. The research borrows from Mundell-Fleming's Trilemma theory. The results show that increasing financial integration reduces the independence of monetary policy in the short term, and foreign exchange reserves have not shown an apparent role in Vietnam. In addition, increasing exchange rate stability has a negative impact on the independence of monetary policy, but it has an impact on growing market confidence and partly supporting the management process of monetary policy in the short term. Therefore, in the long run, Vietnam needs to allow exchange rate flexibility more, but there should not be sudden changes; the size of foreign exchange reserves should be strengthened to facilitate the implementation of an independent monetary policy with an obvious impact in the context of an increasing scale of international capital flows in the future.

A Study on Operation Standards for Optimal Operating Reserve in Electricity Market (전력시장에서의 적정 운영예비력 기준에 관한 연구)

  • 류성호;이강완;김광원;황갑주
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.52 no.5
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    • pp.287-293
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    • 2003
  • The deregulation and structural reform of power markets have started from the early 90s, which has brought about new studies on the new environment. Regardless the market structure, however, power systems need to be operated and planned in a stable and reliable manner. Therefore, decisions on proper amount of operating reserves and their reliable operations are very important. Up to now, the decision processes of operating reserves depend mainly on experiences of operators in Korea. When Korean power market comes under private management, operating reserves would influence power rate as well as power Quality, Therefore, it is time to prepare reasonable operating reserve standards in a systematic way for the new environment. This study suggests the proper operating reserve standards considering rules of the power market in Korea. To verify the adequacy of the proposed standards, stability and frequency characteristics of the Korean power system are analyzed as well.

Mobilization of Food Reserves and Ultrastructural Changes in Cotyledons of Germinating Soybean Seeds an Seedlings

  • Song, Young-Sun;Cho, Chung-Won;Mark, H. Love
    • Preventive Nutrition and Food Science
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    • v.6 no.1
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    • pp.29-37
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    • 2001
  • The mobilization of food reserves and ultrastructural changes in th cotyledons of germinating soybean seeds (Glycine max L. Mer. Cultivar Amsoy) and seedlings were studied by using light and transmission electron microscopy. When germinating began, the cotyledon tissues were packed with protein an lipid bodies. Mobilization of the reserves started in epidermis and vascular bundles. After three days of seedling growth, significant reductions of protein and lipid bodies were observed; concurrently, the numbers of starch grains, glyoxysoms, and mitochondria were increased. These ultrastructural changes are discussed with reference to the metabolism of the germinating soybean seeds and seedlings.

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Biological Upgrading of Heavy Crude Oil

  • Leon, Vladimir;Kumar, Manoj
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.10 no.6
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    • pp.471-481
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    • 2005
  • Heavy crudes (bitumen) are extremely viscous and contain high concentrations of asphaltene, resins, nitrogen and sulfur containing heteroaromatics and several metals, particularly nickel and vanadium. These properties of heavy crude oil present serious operational problems in heavy oil production and downstream processing. There are vast deposits of heavy crude oils in many parts of the world. In fact, these reserves are estimated at more than seven times the known remaining reserves of conventional crude oils. It has been proven that reserves of conventional crude oil are being depleted, thus there is a growing interest in the utilization of these vast resources of unconventional oils to produce refined fuels and petrochemicals by upgrading. Presently, the methods used for reducing viscosity and upgradation is cost intensive, less selective and environmentally reactive. Biological processing of heavy crudes may provide an ecofriendly alternative or complementary process with less severe process conditions and higher selectivity to specific reactions to upgrade heavy crude oil. This review describes the prospects and strengths of biological processes for upgrading of heavy crude oil.

FUZZY REGRESSION TOWARDS A GENERAL INSURANCE APPLICATION

  • Kim, Joseph H.T.;Kim, Joocheol
    • Journal of applied mathematics & informatics
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    • v.32 no.3_4
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    • pp.343-357
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    • 2014
  • In many non-life insurance applications past data are given in a form known as the run-off triangle. Smoothing such data using parametric crisp regression models has long served as the basis of estimating future claim amounts and the reserves set aside to protect the insurer from future losses. In this article a fuzzy counterpart of the Hoerl curve, a well-known claim reserving regression model, is proposed to analyze the past claim data and to determine the reserves. The fuzzy Hoerl curve is more flexible and general than the one considered in the previous fuzzy literature in that it includes a categorical variable with multiple explanatory variables, which requires the development of the fuzzy analysis of covariance, or fuzzy ANCOVA. Using an actual insurance run-off claim data we show that the suggested fuzzy Hoerl curve based on the fuzzy ANCOVA gives reasonable claim reserves without stringent assumptions needed for the traditional regression approach in claim reserving.