• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.14 no.3
• /
• pp.1-11
• /
• 2019

Based on the knowledge spillover theory of entrepreneurship(KSTE) and resource based view(RBV), this study examines that how patent based entrepreneurship impacts on improving key performances such as financing, firm innovation, sales, product selling growth, employment. This study which is conducted with data from 353 startup firms indicates that patent based entrepreneurship has positive effects on performance of financing, innovation, product selling growth, and employment. On the other hand, there is no effect of patent-based entrepreneurship on sales performance. This statistical results were the same The results were the same when the independent variables were measured as intensity of patent based entrepreneurship which indicates the rate of patent based product or service among total number of product or service of the startup company.

• Journal of Korean Society of Transportation
• /
• v.17 no.1
• /
• pp.173-185
• /
• 1999

The purpose of this study is to develope a forecasting model to implement short-term Congestion Management Program (CMP) based on TDM strategies in Seoul. The CMP is composed of three elements: 1) setting a goal of short-term traffic management. 2) developing a model to forecast the impacts of TDM alternatives, and 3) finding TDM measures to achieve the goal To Predict the impacts of TDM alternatives, a model called SECOMM (SEoul COngestion Management Model) is developed. The model assumes that trip generation and distribution are not changing in a short term, and that only mode split and traffic assignment are affected by TDM. The model includes the parameter values calibrated by a discrete mode choice model, and roadway and transit networks with 1,020 zones. As a TDM measure implement, it affects mode choice behavior first and then the speeds of roadway network. The chanced speed again affects the mode choice behavior and the roadway speeds. These steps continue until the network is equilibrated. The study recommends that CMP be introduced in Seoul, and that road way conditions be monitored regularly to secure the prediction accuracy of SECOMM. Also, TDM should be the major Policy tools in removing short-term congestion problems in a big city.

• KDI Journal of Economic Policy
• /
• v.29 no.2
• /
• pp.177-196
• /
• 2007

This paper analyzes welfare effects of revenue neutral tax reform using a small open economy dynamic general equilibrium model. We apply this model to the Korean data and examine welfare effects of various tax reforms; removal of capital income tax and/or labor income tax financed by consumption tax. We investigate both long run equilibrium and transitional dynamics. The results suggest that there are sizable welfare gains (1-3% of lifetime consumption) when factor income taxes are replaced by consumption tax. Overall gains are generated by long run gains despite short run welfare losses. However, there is welfare loss when capital income tax is replaced by labor income tax.

• Environmental and Resource Economics Review
• /
• v.5 no.1
• /
• pp.41-66
• /
• 1995

본 논문은 전력수요와 내구재의 구매를 결정하는 과정을 모형화하고 소득효과를 추정해 보기 위한 것이다. 효용극대화 원리에 기초하여 개인의 의사결정과 관련된 동시성을 규명하고, 이를 논리적으로 설명할 수 있는 모형을 설정함으로써 전력소비와 관련된 보다 정밀한 정보를 얻을 수 있음을 보이고 있다. 소득효과를 추정하는데 있어서 소득이 소비에 주는 영향을 단기와 장기로 나누어 추정한다. 단기의 경우에는 내구재 보유수준이 정해져 있기 때문에 이용율만 상승한다. 그러나 어느 정도 시간이 지나면 효용을 극대화하기 위하여 내구재 보유수준을 높이고 이에 따라 소비수준이 더 늘어나게 된다는 가설을 미시자료(micro data)를 통해 실증적으로 분석한다. 소득효과는 계절별로, 그리고 소득계층별로 보이는 다양한 분포를 추정한다.

• Korea Trade Review
• /
• v.42 no.4
• /
• pp.49-68
• /
• 2017

This paper investigates the spillover effect of the U.S. Interest on Korea's interest rate as well as the role of exchange rate in the spillover effects, by utilizing a open macro model on the determinants of long-term interest rates. According to the cointegration estimation and the Impulse response function, it is found that, across both long-term and short-term, there exist the spillover effect of the U.S. Interest on Korea's interest rate. The fiscal deficit and expected exchange rate have significantly positive relationship with the Koreas's long-term interest rate. Further, foreign exchange market intervention in Korea did not have significant effect on the spillover effect. Thus, this study suggests that exchange rate flexibility would not be enough to restrain the spillover effects of the U.S. interest rate.

• Defense and Technology
• /
• no.12 s.178
• /
• pp.10-17
• /
• 1993

단기간에 효과가 나타나지 않는 군사력 건설의 투자는 지속성이 중요하고 일시적 단절 및 삭감은 추후에 더 큰 부담과 비경제적 효과를 유발시킬 가능성이 크기 때문에 적정국방비를 안정적으로 확보함이 요구됩니다

• Journal of the Korean earth science society
• /
• v.26 no.6
• /
• pp.469-476
• /
• 2005

The objective of this study is to investigate the effects of a new learning method called, 'e-Learning,' by applying this method on a middle school science curriculum and study the influence it has on the students’ short and long term memory. The study was performed on two classes of sixth grade students at 'K middle school' in Yangsan. By handing out structured study assignment in e-Learning, I was able to observe how it affected the learners’ short and long term retention. The results of the study were as follows: First, classes that underwent studies using e-Learning did not show any influence on short term retention. Second, e-Learning had positive influence on long term retention. Third, learners who experienced e-Learning had positive cognition on e-Learning.

• Journal of Korea Port Economic Association
• /
• v.39 no.4
• /
• pp.223-242
• /
• 2023

This study analyzes the spillover effects of returns and volatility between the commodity market and the maritime freight market across various frequency domains (short-term, medium-term, long-term). The key findings of the study can be summarized as follows. First, from the perspective of returns, a high linkage is observed in the short-term between the commodity and maritime freight markets, with the metal commodities market playing a particularly significant role in information transmission effect of return series. Second, in terms of volatility, the total connectedness increases from the short- to the long-term, with substantial long-term risk transmission effects observed especially in the BDI, BDTI, agricultural, and energy commodity markets. Notably, during major global events such as the U.S.-China trade war, COVID-19, and the Russia-Ukraine conflicts, a marked increase in the risk transmission effect in the energy commodities market was identified.

• Journal of Korean Medicine Rehabilitation
• /
• v.18 no.4
• /
• pp.1-11
• /
• 2008

Objectives : Cerebral ischemia resulting from transient or permanent occlusion of cerebral arteries leads to neuronal cell death and eventually causes neurological impairments. Scrophulariae radix is the roots of Scrophularia buergeria. In the present study, we investigated the effects of the aqueous extract of Scrophulariae radix on apoptotic cell death in the hippocampal dentate gyrus following transient global ischemia in gerbils. Methods : For this study, step-down avoidance task, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay, and immunohistochemistry for caspase-3 were performed. Results : The present results showed that apoptotic cell death in the hippocampal dentate gyrus was significantly increased following transient global ischemia in gerbils. Treatment with the aqueous extract of Scrophulariae radix suppressed the ischemia-induced apoptosis in the dentate gyrus and thus facilitated the recovery of short-term memory impairment induced by ischemic cerebral injury. Conclusions : Here in this study, we have shown that Scrophulariae radix has a positive effect on-and possesses protective qualities against ischemia-induced apoptotic neuronal cell death, and it can be used for the treatment of ischemic brain diseases.

• The Korean Journal of Financial Management
• /
• v.26 no.3
• /
• pp.31-64
• /
• 2009

This article investigates the short-term cash flow exposures to Korea's major trading partners' currencies based on the kospi and kosdaq firm data from 2000 to 2008. The cash flow approach allows us to analyze the influence on operational performances of individual firm's hedging strategies. Taken all three foreign exchange rates together, more than 30% of the sample firms exhibit significant exposure. Given that the short-term cash flow is rather easy to hedge, the result proves a poor exchange rate risk management practices of Korean firms. Kosdaq firms are more exposed than Kospi firms. On the contrary to the previous researches using stock prices, the operational cash flows show a positive relationship with the value of foreign currencies. The exchange rate-firm sample further shows that the size and leverage affect the level of exposure.