• Health Policy and Management
• /
• v.14 no.4
• /
• pp.48-74
• /
• 2004

Considering the existence of asymmetric information between doctor and patient, the doctor's reimbursement method has been considered as a desirable policy device of improving efficiency of patient's use of medical care in terms of its affecting doctor's practice pattern by determining doctor's practice revenue. By using the Community Tracking Study (CTS) physician data set, which includes not only various information on doctors practice arrangements and sources of practice revenue, but also vignettes of various clinical presentations, this paper investigates doctor's reaction to the financial incentive under the control of patient's specific medical situation. Under the econometric model for exploring the effect of doctor's reimbursement method on his/her practice patterns; referring patients, recommend doctor-visit or medical tests, the Hausman's specification test was used for checking out the possibility of the doctor's reimbursement method being endogeneized explanatory variable. In the case where the endogeneity problem of doctor's reimbursement method exists, the 2SLS method was used for correcting that problem, and the multiple regression method was used in the case where the problem is found to be nonexistent. Based on the empirical results, this paper finds that doctors do appear to respond to financial incentive. The empirical results show that the doctor's reimbursement method statistically significantly affects doctor's practice pattern and are coincident with the theoretical result proposed by previous researches, This results suggest, as doctor's practice revenues are mainly determined by prospective method, such as capitation, doctors would more refer their patients to specialists, and hesitate in recommending doctor-visit or medical exam.

• Journal of Labour Economics
• /
• v.27 no.1
• /
• pp.77-105
• /
• 2004

Given the limitations of UI benefit and self-insurance through precautionary savings, this paper suggests a new scheme of income support for the unemployed, which offers unemployed workers not only UI benefit but also borrowings from their future pension incomes. Allowing individuals to have effective self-insurance through pension- borrowing, this scheme provides them with consumption-smoothing and reduction in risk burden while maintaining search incentives of the unemployed. Simulation study based upon household panel data in Korea suggests that a heavy reliance should be set upon self-insurance through pension-borrowings rather than upon UI benefit, even for the low-income individuals who are subsidized under UI system. This result provides us with insightful implications for a social safety net in (fast-growing) developing countries, where people cannot afford a good amount of UI benefit or of precautionary savings against unemployment although they expect their incomes to be much higher in the future. Indeed, it is consumption-smoothing effect of self-insurance through pension- borrowings, as well as its incentive-maintaining effect, that makes it a promising alternative of social safety net in developing countries.

• Smart Structures and Systems
• /
• v.19 no.4
• /
• pp.341-350
• /
• 2017

Based on the super elastic properties of the shape memory alloy (SMA) and the inverse piezoelectric effect of piezoelectric (PZT) ceramics, a kind of hybrid semi-active control device was designed and made, its mechanical properties test was done under different frequency and different voltage. The local search ability of genetic algorithm is poor, which would fall into the defect of prematurity easily. A kind of adaptive immune memory cloning algorithm(AIMCA) was proposed based on the simulation of clone selection and immune memory process. It can adjust the mutation probability and clone scale adaptively through the way of introducing memory cell and antibody incentive degrees. And performance indicator based on the modal controllable degree was taken as antigen-antibody affinity function, the optimization analysis of damper layout in a space truss structure was done. The structural seismic response was analyzed by applying the neural network prediction model and T-S fuzzy logic. Results show that SMA and PZT friction composite damper has a good energy dissipation capacity and stable performance, the bigger voltage, the better energy dissipation ability. Compared with genetic algorithm, the adaptive immune memory clone algorithm overcomes the problem of prematurity effectively. Besides, it has stronger global searching ability, better population diversity and faster convergence speed, makes the damper has a better arrangement position in structural dampers optimization leading to the better damping effect.

• Informatization Policy
• /
• v.17 no.2
• /
• pp.86-103
• /
• 2010

This paper computes the economic impact of handset subsidies using the recent Input-Output Tables and compares the results with other alternatives which telecommunications companies can choose. The first scenario is that telecommunications companies give handset subsidies to consumers and sales agents. The second is that the companies do not give the subsidies to them, but instead spend the same amount of subsidy on facility investment. The third is that the companies lower the prices of their mobile communications services and consumers spend the saved expenses on other goods and services. The result is that the production, value added, import, job, employment inducement coefficients of the first scenario is larger than those of the second and third scenarios. The reason is as follows. The handset subsidy results in the incentive to consumers for handset purchase or the incentive for sales agents to sell the telecommunication services of the companies. The former has larger production and import inducement effect, and the latter also has larger value-added, job, and employment inducement effect than those of other scenarios.

• Journal of Distribution Science
• /
• v.15 no.11
• /
• pp.73-82
• /
• 2017

Purpose - This paper aims to investigate a profit maximizing incentive of foreign traders in distributing the KOSPI 200 Futures. Such an incentive may induce unsophisticated retail traders to suffer loss from speculative trading. Since Korean government increased the entry barriers of the market to protect unsophisticated traders, the market size has been decreasing while the proportion of the contract held by foreign traders has been increasing. These on going changes make the market imperfectly competitive, where a profit maximization incentives of foreign traders are expected to grow. In this paper, we attempt to find any evidence of such behavior, thereby providing implications regarding market policy and market efficiency. Research design, data, and methodology - According to Kyle(1985), an informed trader exploits his/her monopoly power optimally in a dynamic context so that he/she makes positive profit, where he/she could conceal his/her trading utilizing noise trading as camouflage. We apply the KOSPI 200 Futures market to the Kyle's model: foreign traders who take into account the effect of his/her trading to maximize expected profits as an informed trader, retail investors as noise traders, and financial institutions as market makers. To find any evidence of monopolistic behavior, we test the variants of trading volume and price data of the KOSPI 200 Futures over the period of 2009 and 2017. Results - First, we find that the price of the KOSPI 200 Futures are more volatile than the price of underlying asset. Second, we find that monopolistic foreign trader's trading order flows are consistent with exploiting his/her monopoly power to maximize profit. Finally, we find that retail investors' trading order flows are inversely consistent with maximizing profit, that is, uninformed retail investors suffer loss continuously in speculative trading against informed traders. Conclusions - Our results show that the quantity of strategic order flows may have a large effect on the price, therefore, resulting the market inefficiency. The results also imply that, in implementing regulations, the depth of the market must be considered to maintain market liquidity, and suggesting interesting research topics regarding the market structure.

• Journal of Navigation and Port Research
• /
• v.34 no.3
• /
• pp.235-242
• /
• 2010

In recent years, the busan port is now facing a serious crisis. Exterally, though worldwide economics depression is a serious factor, cuttthroat competition between north port and new port since new port open lead to decrease terminal profitability and busan port image. The essential cause is crowed with terminal operators. therefore, This paper empirically analyze the container terminal integration factor solving busan port problem affecting the competitiveness performance. According to research results, integration between operators will be to acomplish global terminal, and so, contribute to increase service power, port productivity, cargoes and to be hub-port at the north-east asia. These results show political suggestions for importance of repid integration to improve busan port's competitiveness.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• v.11 no.6
• /
• pp.807-823
• /
• 2018

The purpose of this study is to analyze whether there is a financial incentive effect by analyzing the difference of educational performance between the specialization department students who receive financial support and the students who do not receive support. This study collected survey data of 334 students including 290 students who were financially supported and 44 students who were not financially supported. Through the collected data, frequency analysis and descriptive statistics analysis were performed on the general characteristics of the subjects. T-test was conducted to analyze the difference of teaching & learning performance between students with financial support and those who did not, and then the difference analysis by grades was F-test. The average value of the subjects' teaching & learning satisfaction scores was 2.99, and the result was higher than that of the female students. The higher the age, the higher the grade, the higher the grade, the higher the financial support students were. The average of teaching & learning achievement composition items of the survey subjects was 2.27, and it was found that male students, older students, and students who received financial support had higher average of teaching & learning outcomes than students who did not receive financial support respectively. Students who receive financial support have higher teaching & learning satisfaction and outcomes than students who are not financially supported. The longer the period of financial support, the older the better, and the male students are more satisfied with the teaching & learning, the better the teaching & learning.

• The Journal of the Korea Contents Association
• /
• v.19 no.4
• /
• pp.394-402
• /
• 2019

This study examines the effect of managerial ownership on the value of firms' cash holdings. According to the management entrenchment hypothesis, managers have incentives to make decisions that can undermine shareholders' value for their own private interests. In this situation, as the managerial ownership increases, investors may evaluate that the cash held by the company may be utilized inefficiently and the value of the cash holdings may decrease. On the other hand, based on the incentive alignment hypothesis, the value of cash holdings may increase as investors perceive cash holdings to be effectively used to increase corporate value as managers' interests are in agreement with shareholders. Empirical results show that the value of cash holdings decreased as managerial ownership increased. This study finds a contribution in that it presents empirical evidence on whether the cash held by the company is differentially evaluated according to the level of the managerial ownership.

• Journal of Labour Economics
• /
• v.43 no.2
• /
• pp.1-39
• /
• 2020

This paper analyzes the effect of marriage subsidy, which was provided by some municipalities of South Korea from 2006, on marriage. Marriage subsidy, targeted for international marriage between Korean men and foreign women, increases the economic incentive for international marriage. Using the Korean marriage record during 2004-2018 and exploiting the variation in marriage subsidy across regions(administrative level 2, si/gun/gu) and years with difference-in-differences method, I find that marriage subsidy significantly increases the probability of a single Korean man marrying a foreign woman. I found no evidence on crowd out effect on marrying a Korean woman, and the effect of subsidy on total marriage was significantly positive. Subgroup analysis shows that the effect of marriage subsidy on international marriage was strongest for the older and high school graduated men.

• Proceedings of the Technology Innovation Conference
• /
• 2000.06a
• /
• pp.123-151
• /
• 2000

The aim of this paper is to investigate how the public procurement policy exerts an effect upon the technology innovation of the firm and to make alternative proposals how to reinforce the effect. Although the pubic procurement process based on its monopsonic idiosyncrasy implies the means to lead the firms' supply function, the present system has contributed a little to accelerate the technology innovation. In fact, the system is lacking of the evaluation capability referring to the technological computer among the bidding films. So as to reinforce the function of technology innovation of the public procurement policy, it is necessary to improve the procurement institutions, in particular bidding and contract system. Finally, the paper propose, on the on hand, to enlarge the application range of the total bidding system in order to apply more strictly the technology evaluation standards on bidding, and on the other hand, to multiply the competitive proposal and the incentive contract type.