• 보건행정학회지
• /
• 제21권2호
• /
• pp.249-262
• /
• 2011

Since May 1st in 2008, the products of ginkgo biloba extract have had to be used with the patient's out-of-pocket payment due to reimbursement restriction guidelines. This study aims to analyze the policy effects of reimbursement restriction on pharmaceutical expenditures using interrupted time series(ITS) analysis. We retrieved monthly NHI claims data for the period between May, 2005 and December 2009. The ingredients identified as a substitute for ginkgo biloba have similar indications based on the similar pharmacological activities. The effects of changes in reimbursement scope were evaluated both for all relevant pharmaceuticals within the same therapeutic class and for 2 separate groups : ginkgo biloba's and its substitutes. According to the study results, restrictions on reimbursement scope resulted in savings of the drug expenditures in the targeted therapeutic class. Direct restriction on ginkgo biloba was associated with a decrease in expenditure level by 60.1% and changes in trend from an average increase rate of 1.4% to an average decrease rate of 1.5% for the therapeutic class, with a dramatic decrease in expenditure level(-191.5%) for ginkgo biloba itself, but with an increased expenditure level(+50.1%) and changes in trend from an average increase rate of 2.0% to an average decrease rate of 1.0% for the substitute group. Further policy to restrict nicergoline was associated with additional decrease in expenditure level for the therapeutic class. Additionally, we could identify the balloon effect - a new policy squeezing one part results in bulging out elsewhere. After the restriction of ginkgo biloba, the utilization of and expenditures on its substitutes increased significantly. In conclusion, we demonstrated that consecutively introduced policies effectively reduced overall expenditures on the therapeutic class of interest. Some ingredients played as a substitute while others did not. Further studies need to be conducted to identify which factors determine a substitute.

• 산업경영시스템학회지
• /
• 제43권3호
• /
• pp.61-67
• /
• 2020

The fourth industrial revolution encourages manufacturing industry to pursue a new paradigm shift to meet customers' diverse demands by managing the production process efficiently. However, it is not easy to manage efficiently a variety of tasks of all the processes including materials management, production management, process control, sales management, and inventory management. Especially, to set up an efficient production schedule and maintain appropriate inventory is crucial for tailored response to customers' needs. This paper deals with the optimized inventory policy in a steel company that produces granule products under supply contracts of three targeted on-time delivery rates. For efficient inventory management, products are classified into three groups A, B and C, and three differentiated production cycles and safety factors are assumed for the targeted on-time delivery rates of the groups. To derive the optimized inventory policy, we experimented eight cases of combined safety stock and data analysis methods in terms of key performance metrics such as mean inventory level and sold-out rate. Through simulation experiments based on real data we find that the proposed optimized inventory policy reduces inventory level by about 9%, and increases surplus production capacity rate, which is usually used for the production of products in Group C, from 43.4% to 46.3%, compared with the existing inventory policy.

• The Journal of Asian Finance, Economics and Business
• /
• 제7권9호
• /
• pp.219-228
• /
• 2020

The study investigates the impact of inflation rate on economic growth to find the best-fit model for economic growth in Vietnam. The study applied Vector Autoregressive (VAR), cointegration models, and unit root test for the time-series data from 1996 to 2018 to test the inflation impact on the economic growth in the short and long term. The study showed that the two variables are stationary at lag first difference I(1) with 1%, 5% and 10%; trace test indicates two cointegrating equations at the 0.05 level, the INF does not granger cause GDP, the optimal lag I(1) and the variables are closely related as R2 is 72%. It finds that the VAR model's results are the basis to perform economic growth; besides, the inflation rate is positively related to economic growth. The results support the monetary policy. This study identifies issues for Government to consider: have a comprehensive solution among macroeconomic policies, monetary policy, fiscal policy and other policies to control and maintain the inflation and stimulate growth; set a priority goal for sustainable economic growth; not pursue economic growth by maintaining the inflation rate in the long term, but take appropriate measures to stabilize the inflation at the best-fitted VAR forecast model.

• The Journal of Asian Finance, Economics and Business
• /
• 제9권9호
• /
• pp.263-269
• /
• 2022

The global financial crisis of 2008-2009 and the COVID-19 pandemic that started in 2019 along with the slow and unstable recovery of the global economy have raised concerns about the impact of global uncertainty on the macroeconomics of the countries. The paper used the Structural Vector Autoregression (SVAR) model to examine the impact of global uncertainty shocks on Vietnam's economy from the period 2008-2022. We found that Vietnam's output dropped following the shock of global uncertainty, the peak was in the third month, and lasted for one year. Inflation in Vietnam had a rapid downturn in the first month, peaked in the seventh month, and took a long time to cease. When the economy experienced the shock of increased global uncertainty, Vietnam's policy interest rate was adjusted downward. Additionally, we included a long-term interest rate to consider the overall impact of monetary policy into account. A decreasing trend was also found with this rate. The global uncertainty shock effects acted as the aggregate demand shocks, reducing output and inflation as the uncertainty increases and vice versa, thus monetary policy can be used to regulate Vietnam's economy to deal with negative shocks without the trade-offs between output and inflation as aggregate supply shocks.

• The Journal of Asian Finance, Economics and Business
• /
• 제9권5호
• /
• pp.285-294
• /
• 2022

Using the ARDL approach, this study examined the impact of macro factors on Vietnam's stock market in the short and long run from 2010 to 2021. The State Bank of Vietnam and the International Monetary Fund provided time series data for this study. Research results show that in the long run, money supply and exchange rate respectively affect the stock market. The money supply had a positive effect on the VN-Index, while the exchange rate showed the opposite effect. However, the study did not find a relationship between world oil price and interest rates on VN-Index in the long run. On the other hand, in the short term, there are relationships between variables; specifically, interest rates and exchange rates have a negative impact on the VN-Index, while the world oil price and the fluctuation of money supply M2 of the previous one and two months showed an impact in the same direction on this index. The differences in the regression results on the impact of exchange rate and oil price on the VN-Index compared to previous studies come from the characteristics of Vietnam's stock market, with the large capitalization of companies in the oil and gas sector, and the structure of Vietnam's economy with export heavily depends on FDI sector.

• East Asian Economic Review
• /
• 제22권4호
• /
• pp.531-555
• /
• 2018

This article aims to review the monetary policy rule under inflation targeting framework focusing on Mongolia. The empirical analysis estimates the policy reaction function to see if the inflation targeting has been linked with a monetary policy rule emphasizing on inflation stabilization since its adoption in 2007. The study contributes to the literature by examining the linkage between Mongolian monetary policy rule and inflation targeting directly and thoroughly for the first time and also by taking into account a recent progress in the inflation targeting framework toward forward-looking mode. The main findings were: the Mongolian current monetary policy rule under inflation targeting is characterized as inflation-responsive rule with forward-looking manner (one quarter ahead); the inflation responsiveness is, however, weak enough to be pro-cyclical to inflation pressure; and the rule is also responsive to exchange rate due to the "fear of floating", which weakens the policy reaction to inflation and output gap.

• The Journal of Asian Finance, Economics and Business
• /
• 제9권7호
• /
• pp.27-39
• /
• 2022

The exchange rate is an important macroeconomic variable that influences internal and external balances. Nepal follows a dual exchange rate such that the Nepali rupee (NPR) is pegged with the Indian rupee (INR) but floats with the United States dollar (USD) and all other currencies. There have been very few studies on the exchange rate of Nepal, of which the majority focus on the bivariate relationship between exchange rate and another variable. However, this paper analyses the multivariate relationship between the USD-NPR exchange rate and major macroeconomic variables. Determinants of Nepal's exchange rate have been derived with multiple regression using the ordinary least square (OLS) approach. Since the explanatory variables could not significantly capture the movement of the dependent variable, a long-run relationship between Nepal and India's exchange rate has been analyzed using Engle-Granger cointegration to establish a relationship as suggested by a graphical representation. This explains that Nepal's exchange rate long run is determined by India's exchange rate than its own fundamentals. In addition, the macro-linkages of Nepal's macroeconomic variables have been analyzed using Standard Vector Autoregressive models followed by impulse response analysis which is useful for policy decisions. Some policy implications indicating the sustainability of Nepal's pegged regime have been drawn based on the empirical analysis.

• 보건행정학회지
• /
• 제27권1호
• /
• pp.56-62
• /
• 2017

Background: There have been deviations in the regional rate of certification in Korean long-term care insurance (LTCI). This study aimed to explore the determinants of the rate of certification in LTCI. Methods: The panel data of the year 2010-2014 of the 227 National Health Insurance Service (NHIS) regional office were used. Making use of 26 explanatory variables (socio-demographic factors, access to the long-term care services, etc.), we estimated the random effects model using STATA SE ver. 13.0 program (Stata Corp., College Station, TX, USA) and tried to find out the determinants of the regional rate of certification. Results: Estimation results showed that the most important determinants of the regional rate of certification in LTCI are the long-term care infrastructure such as capacity or number of the homecare service institution, sanatorium, or convalescent hospital. The number of the elderly who lives alone and the dimentia patients were positively related to the regional rate of certification in LTCI. Conclusion: The estimation results implied that the regional variation in the rate of certification in LTCI has nothing to do with the NHIS regional offices or their employees. To alleviate the deviation in the regional rate of certification in LTCI, we suggested the analysis of the deviation in the survey checklist. We also proposed to found the regional comprehensive support center to prevent the geriatric illness and to improve the residents' health, etc.

• KDI Journal of Economic Policy
• /
• 제13권4호
• /
• pp.141-153
• /
• 1991

본고(本稿)에서는 재정당국(財政當局)과 통화당국(通貨當局)를 포괄하는 통합정부(統合政府)의 최적재원조달(最適財源調達)의 관점에서 재정정책(財政政策)과 통화정책간(通貨政策間)의 체계적(體系的)인 연관(聯關)의 존재 여부와 그 내용을 재정우위(財政優位)모델의 이론적 결과에 입각하여 실증적(實證的)으로 고찰하였다. 재정우위(財政優位)모델에서는 통화(通貨)에 의한 직접적(直接的) 재원조달(財源調達) 경로(經路)로서의 seigniorage의 확보와, 간접적(間接的) 경로(經路)로서의 인플레적 편의(偏倚)를 모델화하여 정부예산제약하(政府豫算制約下)에서 최적(最適) 인플레이션율(率) 조세부담율(租稅負擔率)의 선택문제를 다루고 있으며, 이 모델에서 밝혀진 재정(財政) 통화정책(通貨政策)의 적정관계(適正關係)는 최적 인플레이션율(率)/조세부담률(租稅負擔率) 비율(比率)과 한계수입비율간(限界收入比率間)의 정(正)의 상관관계(相關關係)와, 인플레이션율(率)과 조세부담률간(租稅負擔率間)의 정(正)의 상관관계(相關關係)로 함축된다. 1970~80년대 한국경제(韓國經濟)의 거시경제정책영역(巨視經濟政策領域)의 성격 규명을 위한 가설검정(假說檢定) 결과는 이 기간의 재정(財政) 통화변수(通貨變數)의 추이가 통화에 의한 직접적 재원조달측면(財源調達側面)을 강조하는 재정우위(財政優位)의 최적화(最適化) 과정(過程)의 이론적(理論的) 결과(結果)와 부합됨을 보여주고 있다. 본(本) 연구결과(硏究結果)는 한국(韓國)의 거시경제정책기조(巨視經濟政策基調) 설명(說明)에 있어 재정우위(財政優位)의 최적화(最適化)모델이 유용할 수 있으며 재정(財政) 통화정책변수(通貨政策變數)들이 기대되는 수준 이상으로 체계적인 연관을 가지고 있음을 보여주고 있다. 또한 재정우위(財政優位)모델의 이론적 결과의 엄밀한 해석을 통하여 통화공급(通貨供給)과 물가(物價)의 설명변수(說明變數)로서의 재정(財政)의 중요성과 그 구체적 내용을 보여주고 있다.

• 한국항만경제학회지
• /
• 제36권4호
• /
• pp.93-106
• /
• 2020

무역은 국가 경제에 중요한 경제활동이다. 특히, WTO 출범 이후 2001년 중국의 WTO 가입, 다자간 무역체계의 확립, 자유무역협정(FTA) 등으로 무역의 범위가 확대되고, 국가 간 무역장벽의 완화 및 통합화로 인해 무역시장의 규모가 확대되고 있다. 그러나 무역시장 규모가 확대됨에도 불구하고, 2008년 글로벌 금융위기, 2016년 브렉시트, 2018년 미·중 무역전쟁과 같은 극단적인 사건 발생하여 무역시장이 직접적으로 타격받고 있다. 이에 본 연구는 무역활동을 대변하는 변수인 국제 해운 운임지수와 미국, 중국 무역 불확실성 사이의 의존구조를 분석 하였다. 분석 결과를 요약하면 다음과 같다. 첫째, 미국, 중국 무역 불확실성과 국제 해운 운임지수 조합의 결합분포가 각각 Frank copula, rotated Clayton copula 270°으로 나타나, 미국, 중국 국가별로 동일한 분포 구조를 보이는 것으로 나타났다. 둘째, Kendall's tau 상관관계를 살펴보면, 국제 해운 운임지수와 미국, 중국 무역 불확실성 사이에 음(-)의 의존성을 갖지만, 의존성 정도는 중국 무역 불확실성과 국제 해운 운임지수의 조합에서 더 크게 나타났다. 즉, 전 세계 수요와 무역 불확실성의 의존성은 미국보다 중국이 더 강하다는 것을 확인하였다. 마지막으로, 꼬리 의존성 결과를 살펴보면, 미국, 중국 무역 불확실성과 국제 해운 운임지수가 서로 독립적인 관계로 나타났다. 이는 무역 불확실성의 극단적인 사건 혹은 국제 해운 운임지수의 극단적인 사건이 발생해도 서로 영향을 받지 않는 것으로 의미한다.