• 제목/요약/키워드: Short term effect

검색결과 1,192건 처리시간 0.029초

기상청 계절예측시스템(GloSea5)의 해양성층 강화시기 단기 해양예측 정확도 및 대기-해양 접합효과 (Accuracy of Short-Term Ocean Prediction and the Effect of Atmosphere-Ocean Coupling on KMA Global Seasonal Forecast System (GloSea5) During the Development of Ocean Stratification)

  • 정영윤;문일주;장필훈
    • 대기
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    • 제26권4호
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    • pp.599-615
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    • 2016
  • This study investigates the accuracy of short-term ocean predictions during the development of ocean stratification for the Korea Meteorological Administration (KMA) Global Seasonal Forecast System version 5 (GloSea5) as well as the effect of atmosphere-ocean coupling on the predictions through a series of sensitive numerical experiments. Model performance is evaluated using the marine meteorological buoys at seas around the Korean peninsular (KP), Tropical Atmosphere Ocean project (TAO) buoys over the tropical Pacific ocean, and ARGO floats data over the western North Pacific for boreal winter (February) and spring (May). Sensitive experiments are conducted using an ocean-atmosphere coupled model (i.e., GloSea5) and an uncoupled ocean model (Nucleus for European Modelling of the Ocean, NEMO) and their results are compared. The verification results revealed an overall good performance for the SST predictions over the tropical Pacific ocean and near the Korean marginal seas, in which the Root Mean Square Errors (RMSE) were $0.31{\sim}0.45^{\circ}C$ and $0.74{\sim}1.11^{\circ}C$ respectively, except oceanic front regions with large spatial and temporal SST variations (the maximum error reached up to $3^{\circ}C$). The sensitive numerical experiments showed that GloSea5 outperformed NEMO over the tropical Pacific in terms of bias and RMSE analysis, while NEMO outperformed GloSea5 near the KP regions. These results suggest that the atmosphere-ocean coupling substantially influences the short-term ocean forecast over the tropical Pacific, while other factors such as atmospheric forcing and the accuracy of simulated local current are more important than the coupling effect for the KP regions being far from tropics during the development of ocean stratification.

Modulation of Amygdala Synaptic Transmission by Metabotropic Glutamate Receptors

  • Kim, Jung-Hyun;Park, Eun-Jin;Chang, Duk-Jin;Choi, Suk-Woo
    • The Korean Journal of Physiology and Pharmacology
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    • 제7권6호
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    • pp.303-306
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    • 2003
  • Metabotropic glutamate receptors (mGluRs), classified into three groups (group I, II, III), play a critical role in modulation of synaptic transmission at central and peripheral synapses. In the present study, extracellular field potential recording techniques were used to investigate effects of mGluR agonists on excitatory synaptic transmission at thalamic input synapses onto the lateral amygdala. The non-selective mGluR agonist t-ACPD ($100{\mu}M$) produced reversible, short-term depression, but the group III mGluR agonist L-AP4 ($50{\mu}M$) did not have any significant effects on amygdala synaptic transmission, suggesting that group I and/or II mGluRs are involved in the modulation by t-ACPD. The group I mGluR agonist DHPG ($100{\mu}M$) produced reversible inhibition as did t-ACPD. Unexpectedly, the group II mGluR agonist LCCG-1 ($10{\mu}M$) induced long-term as well as short-term depression. Thus, our data suggest that activation of group I or II mGluRs produces short-term, reversible depression of excitatory synaptic transmission at thalamic input synapses onto the lateral amygdala. Considering the long-term effect upon activation of group II mGluRs, lack of long-term effects upon activation of group I and II mGluRs may indicate a possible cross-talk among different groups of mGluRs.

Evaluation of the Policy Effects of Free Trade Agreements: New Evidence from the Korea-China FTA

  • Xiang Li;Hyukku Lee;Seung-Lin Hong
    • Journal of Korea Trade
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    • 제26권6호
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    • pp.41-60
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    • 2022
  • Purpose - The policy implications of free trade agreements have traditionally been a matter of debate among economists. The official signing of the Korea-China Free Trade Agreement provides economists with a quasi-natural experiment to analyze the FTA's policy effects. This article aims to more accurately understand the impact of Korea's FTA accession on the macro economy. Design/methodology - This study adopts the counterfactual method based on panel data to find common factors in the generation process of macro data to fit the counterfactual path, to accurately evaluate the effect of the macro policy. Findings - Our research results show that the signing of the Korea-China FTA has a relatively significant short-term positive effect on Korea's economic growth. On average, Korea's real GDP growth rate has increased by 2.1%. This study finds evidence in support of FTA signing not having a significant impact on Korea's GDP growth in the long run. Additionally, we evaluated the impact of the FTA on Korea's imports and exports and found that it had a significant positive impact in the short term, but the trade effect of the FTA is significantly affected by the external macro-environment. Originality/value - First, this study uses macro panel data at the national level to examine the impact of the Korea-China FTA on Korea, and more accurately describes the policy effect of the FTA. Second, our empirical results show that the Korea-China FTA policy impact is subject to occasional changes in the external environment, such as the geopolitical conflict (crisis) between Korea and China, and the US-China trade war. Finally, the analysis shows that the short-term effect of FTA is significant but the long-term is uncertain, which provides empirical evidence for the debate on whether joining FTA can promote national economic growth.

단기 입원 프로그램을 시행한 아토피피부염 환자 6례 (6 Cases of Atopic Dermatitis patientsfor Short Term Hospitalization Program)

  • 유승민;윤영희;손병국;최인화
    • 한방안이비인후피부과학회지
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    • 제22권1호
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    • pp.219-236
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    • 2009
  • Background : Recently the number of atopic dermatitis patients has increased, but the treatment of atopic dermatitis is not effective, and the recurrence rate of atopic dermatitis is high. Many patients are suffering from pruritus. A new standard treatment system is needed. Objective : This study investigated the effect of Oriental medicine program for atopic dermatitis patients during short term hospitalization. Method : 6 patients were admitted for short term hospitalization program. The program includes Acupuncture, herbal medicine, examination, education, cupping therapy, herbal dressing, exercise and etc. Everyday we evaluated the patients by Severity Scoring Atopic Dermatitis(SCORAD) index and took the photos of lesions, and the patients evaluated themselves by atopic dermatitis diary which consists of emotion, pruritus, sleep loss. Results : Admission duration was 7 to 14 days. The SCORAD scores of them were decreased. Most symptoms of 6 patients were improved. Especially herbal dressing was effective for severe oozing. Subjective scores of atopic dermatitis diary were reduced. Conclusion : We expect that the short term hospitalization program could be helpful for uncontrollable atopic dermatitis patients.

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Effects of Bank Macroeconomic Indicators on the Stability of the Financial System in Indonesia

  • VIPHINDRARTIN, Sebastiana;ARDHANARI, Margaretha;WILANTARI, Regina Niken;SOMAJI, Rafael Purtomo;ARIANTI, Selvi
    • The Journal of Asian Finance, Economics and Business
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    • 제8권1호
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    • pp.647-654
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    • 2021
  • This study examines the non-performing loans of rural banks and macroeconomic factors in Indonesia, including inflation, exchange rates, and interest rates. Theoretically, the existence of erratic macroeconomic conditions can affect the level of non-performing credit risk in rural credit banks in Indonesia. The effect of macroeconomic conditions on non-performing loans has a different response for each economic sector. The main objective of this study is to determine the effect of macroeconomic factors (inflation, exchange rates, and interest rates) and bank-specific factors (credit) on the Non-Performing Loans (NPL) of Rural Banks in Indonesia for the period from January 2015 to December 2018. This study uses a Vector Error Correction Model (VECM) estimation to determine the effect of independent variables consisting of macroeconomic factors and bank-specific factors. Based on the estimation results of the Vector Error Correction Model, three variables that have a positive and significant effect on long-term non-performing loans are credit, inflation, and interest rates. Meanwhile, in the short term, there are only two variables that have a positive and significant effect on non-performing loans, namely, credit and interest rates. Inflation and exchange rate variables have a negative and insignificant effect on bad credit in the short term.

인체 재조합 적혈구 조혈인자, rHu-EPO의 유전독성 평가 (Genotoxic evaluation of recombinant human erythropoietin (rHu-EPO) in shod-term assays.)

  • 김형식;곽승준;천선아;임소영;안미영;김원배;김병문;안병옥;서동상
    • 한국환경성돌연변이발암원학회지
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    • 제16권2호
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    • pp.103-108
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    • 1996
  • The mutagenic potential of rHu-EPO was evaluated using the short-term genotoxicity tests including Ames, chromosome aberration and micronuclei tests. In Salmonella typhimurium assay, rHu-EPO did not show any mutagenic response in the absence or presence of S9 mix with TA98, TA100, TA1535, and TA1537. In chromosome aberration test, rHu-EPO did not show any significant effect on Chinese Hamster Ovary(CHO) cells compared with control. In micronucleus test using male ICR mice, a dose-dependence increase in the frequency of micronucleuted polychromatic erythrocytes(MNPCEs) was observed in bone marrow cells treated with rHu-EPO. However, it was related to the secondary effect of rHu-EPO and the number of MNPCEs was equal to spontaneous frequency. These results indicate that rHu-EPO does not show any positive response in short-term genotoxicity assays.

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Effect of Natural Disasters on Local Economies: Forecasting Sales Tax Revenue after Hurricane Ike

  • Ismayilov, Orkhan;Andrew, Simon A.
    • Journal of Contemporary Eastern Asia
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    • 제15권2호
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    • pp.177-190
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    • 2016
  • One of the main objectives of this paper is to provide insight to understand the effect of natural disasters on local government finance. That is, to analyze local governments' sales tax revenues after Hurricane Ike. Three Texas cities are examined: League City, Pearland, and Sugarland. Based on data collected from the Texas Comptroller's Office and the US Census, we found local governments experience a short-term increase in sales tax revenues and a long-term decline after the hurricane strike the region. On average, a major hurricane has a two-year impact on local government economy. The findings are essential for practitioners because in order to have a prosperous recovery after natural disasters, public managers have to prepare financially for short term changes in their sales tax revenues.

STM(Short-term Memorable) Information의 속성 및 정보표현 (Attributes and Expression of STM(Short-term Memorable) Information)

  • 한지애;류시천
    • 한국콘텐츠학회논문지
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    • 제10권9호
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    • pp.201-211
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    • 2010
  • 본 연구의 목적은 정보 디자인 유형 중에서 상대적으로 "노출 시간이 짧지만 정보 전달력이 강한 정보" 즉, STM 정보(Short-term Memorable Information)” 에 대한 사용자의 인지력을 높이기 위한 방법을 모색하는 것이다. 연구를 통해 STM 정보의 디자인 속성을 고찰하고 거시적 관점에서 디자인적 표현 방법을 다음과 같이 제안하였다. STM 정보는 기능변수의 조작, 방법, 사건, 사용 예라는 네 가지 시각화 속성을 기준으로 시각적 재현 측면에서 '이해도(Understandable)', '접근성(Accessibility)' 속성이 충족되어야 한다. 또한 사용자 조작 측면에서는 '무오류(Errorless)', '적정성(Timeliness)' 속성이 충족되어야 한다. 각 측면에서의 거시적 표현 방법으로써, 시각적 재현 측면에서 "속성이론", "인식모형", "정보 주도성(Proactivity)의 최대화", "잉여 정보의 최소화", "이중부호의 사용"을 제안했으며, 사용자 조작측면에서 "맥락효과", 일차적 독특성을 중심으로 한 "기억부호화", "정보 주사(Scanning)"의 두 가지 방법을 제안했다. 사용자 설문 인터뷰를 통해서 앞서 제안한 8가지 표현 방법의 효율성에 관한 확증 및 STM 정보에 대한 사용자 인지패턴을 발견하였다. 본 연구에서의 주요 발견점을 토대로 향후에는 노출시간별 효과적인 정보 표현 및 그에 따른 응용 방법에 관한 연구가 진행될 필요가 있다.

전력소비자의 단기수요예측을 위한 전력소비패턴과 환경요인과의 관계 분석 (Relationship Analysis of Power Consumption Pattern and Environmental Factor for a Consumer's Short-term Demand Forecast)

  • 고종민;송재주;김영일;양일권
    • 전기학회논문지
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    • 제59권11호
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    • pp.1956-1963
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    • 2010
  • Studies on the development of various energy management programs and real-time bidirectional information infrastructures have been actively conducted to promote the reduction of power demands and CO2 emissions effectively. In the conventional energy management programs, the demand response program that can transition or transfer the power use spontaneously for power prices and other signals has been largely used throughout the inside and outside of the country. For measuring the effect of such demand response program, it is necessary to exactly estimate short-term loads. In this study, the power consumption patterns in both individual and group consumers were analyzed to estimate the exact short-term loads, and the relationship between the actual power consumption and seasonal factors was also analyzed.

오심과 구토를 호소하는 한 여자환자에 대한 단기정신치료 증례보고 (A Case Report on Short-term Psychotherapy of the Woman Patient with Nausea and Vomiting)

  • 이재광
    • 정신신체의학
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    • 제3권2호
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    • pp.222-231
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    • 1995
  • The author reported a case of short-term dynamic psychotherapy in which relatively good therapeutic results were obtained. And I reviewed several therapeutic factors thought to be important in shot-term dynamic psychotherapy from various literatures. In this case, the frequency of session was limited due to her current reality situations. She had suffered from some adjustmental problems and marital conflict before the onset of the illness. The author could grasp the cental theme of her problems early in treatment period and discussed over it including it's influence on current situation and early childhood with th patient. We also discussed about the relationship between the past and current reality so that she could realize her real problem. At the same time, therapeutic effect was enhanced by family therapy and temporary use of medication.

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