The transition to export-led growth in South Korea : 1954-1966

In analyzing the turning point in Korea's transition in the early 1960s from a strategy of import substitution to one of export-oriented industrial growth, the authors examine not just the economics of change but the politics of economic policy and reform - the incentives facing state and business elites and the institutional context in which they operated. Their analysis shows that the transition to export-led growth in South Korea was a product of the interplay of four factors: pressure from the United States; the dominance of the executive branch; institutional reform within the bureaucracy; and a restructuring of relations between the state and business. Conclusions are drawn about the role of outside pressure in policy reform, about the importance to reform administrative capability and organization, and about the politics of policy change.ICT Policy and Strategies,Legal Products,Health Monitoring&Evaluation,National Governance,Environmental Economics&Policies

Robust and reliable H∞H_\infty output feedback control for linear systems with parameter uncertainty and actuator failure

summary:The robust and reliable $H_{\infty }$ output feedback controller design problem is investigated for uncertain linear systems with actuator failures within a prespecified subset of actuators. The uncertainty considered here is time- varying norm-bounded parameter uncertainty in the state matrix. The output of a faulty actuator is assumed to be any arbitrary energy-bounded signal. An observer-based output feedback controller design is presented which stabilizes the plant and guarantees an $H_{\infty }$-norm bound on attenuation of augmented disturbances, for all admissible uncertainties as well as actuator failures. The construction of the observer-based output feedback control law requires the positive-definite solutions of two algebraic Riccati equations. The result can be regarded as an extension of existing results on robust $H_{\infty }$ control and reliable $H_{\infty }$ control of uncertain linear systems

Visible success and invisible failure in post-crisis reform in the Republic of Korea : interplay of the global standards, agents, and local specificity

The reform package in post-crisis Korea was one of the most comprehensively designed and decisively implemented. Though impressed by the quick recovery, many are now raising doubts about real changes in the economy, as the result of a cost-benefits analysis: While the business climate is more stable and supportive, the economy is suffering from weak investment and rising unemployment. This study views the Korean story as one of"visible success and invisible failure,"based on the following findings: First, while some new laws were enacted and several quantifiable targets met, little real progress was made in changing institutional conventions, habits, and beliefs, such as enhancing transparency in management or trust in labor relations. Second, the reform process involved tension between global standards and local specificity, which accounts for the mixed results. Third, special interest politics at the implementation stage, plus the complexities caused by increasing democratization and globalization, have undermined the authorities'implementation capacity, which accounts for uneven outcomes of the reform. While globalization necessitates increasing flexibility, Korean managers are now facing much stronger labor unions. The outcome is not a fully flexible but segmented labor market, divided between the core, unionized workers and unorganized peripheral workers, and between the one overprotected and the other underprotected. Fourth, it is important to have an effective system of legislative bargaining to help resolve disputes. Only with this institutional vehicle will special interest groups reach some consensus. Korea tried to overhaul its financial system and achieve substantial financial liberalization in the early 1990s but those attempts were partly aborted and partly distorted, which paved the way for the financial crisis in 1997. This was due to the lack of clear consensus, without which reforms are more likely to be aborted or be unsuccessful. Fifth, implementation problems stem from institutional complementarities and inappropriate sequencing. One logical sequence might be banking reform, corporate governance, labor relations, and then finally business restructuring. Now, an emerging question is whether the reform blueprint was right. Post-crisis Korea just tried to be more market- or Anglo-Saxon model-oriented without paying attention to growth potential. While firms have now lowered their debt ratios, they are not borrowing to fund investments. The issue of right or wrong blueprint underscores the need to define the reform goal correctly. The goals of reform should not just be a move toward a market-oriented economy but toward a growth-oriented one or a pro-growth market-oriented one.Environmental Economics&Policies,Banks&Banking Reform,Children and Youth,Economic Theory&Research,National Governance

Biological Effect of Gas Plasma Treatment on CO 2

Porous polycaprolactone (PCL) scaffolds were fabricated by using the CO2 gas foaming/salt leaching process and then PCL scaffolds surface was treated by oxygen or nitrogen gas plasma in order to enhance the cell adhesion, spreading, and proliferation. The PCL and NaCl were mixed in the ratios of 3 : 1. The supercritical CO2 gas foaming process was carried out by solubilizing CO2 within samples at 50°C and 8 MPa for 6 hr and depressurization rate was 0.4 MPa/s. The oxygen or nitrogen plasma treated porous PCL scaffolds were prepared at discharge power 100 W and 10 mTorr for 60 s. The mean pore size of porous PCL scaffolds showed 427.89 μm. The gas plasma treated porous PCL scaffolds surface showed hydrophilic property and the enhanced adhesion and proliferation of MC3T3-E1 cells comparing to untreated porous PCL scaffolds. The PCL scaffolds produced from the gas foaming/salt leaching and plasma surface treatment are suitable for potential applications in bone tissue engineering

Effect of 660 nm Light-Emitting Diode on the Wound Healing in Fibroblast-Like Cell Lines

Light in the red to near-infrared (NIR) range (630–1000 nm), which is generated using low energy laser or light-emitting diode (LED) arrays, was reported to have a range of beneficial biological effects in many injury models. NIR via a LED is a well-accepted therapeutic tool for the treatment of infected, ischemic, and hypoxic wounds as well as other soft tissue injuries in humans and animals. This study examined the effects of exposure to 660 nm red LED light at intensities of 2.5, 5.5, and 8.5 mW/cm2 for 5, 10, and 20 min on wound healing and proliferation in fibroblast-like cells, such as L929 mouse fibroblasts and human gingival fibroblasts (HGF-1). A photo illumination-cell culture system was designed to evaluate the cell proliferation and wound healing of fibroblast-like cells exposed to 600 nm LED light. The cell proliferation was evaluated by MTT assay, and a scratched wound assay was performed to assess the rate of migrating cells and the healing effect. Exposure to the 660 nm red LED resulted in an increase in cell proliferation and migration compared to the control, indicating its potential use as a phototherapeutic agent

Visible Success and Invisible Failure in Post-Crisis Economic Reform in Korea : Interplay of the Global Standards, Agents and Local Specificity

Post-crisis reform was one of the most comprehensive and decisive reform that was implemented in Korea. This paper develops a model of reform dynamics. This paper subsequently uses this model to discuss the following arguments. First, while reform tends to achieve some nominal success in terms of making new laws and several quantifiable targets, it has not been able to achieve much success in really changing institutional conventions, habit and beliefs, such as enhancing transparency in the management or trust in labor relations. Second, it had mixed results as a result of the reform process involved tension between global standard and local specificity. Third, one source of the implementation difficulty in reform has to do with the institutional complementarities, and we need to take a proper sequence in reforms. One possible logical sequence seems to be moving from banking reform, corporate governance, labor relations, and finally to business restructuring. The paper concludes by tossing up a question of whether the Korean response (the reform blueprint) was right

Prognostic Value of Postoperative CEA Clearance in Rectal Cancer Patients with High Preoperative CEA Levels

PURPOSE: We determined the prognostic value of carcinoembryonic antigen (CEA) clearance after tumor resection with serial evaluation of postoperative CEA levels in rectal cancer. METHODS: Between 1994 and 2004, we retrospectively reviewed 122 patients with rectal cancer whose serum CEA levels were measured on the preoperative day and postoperative days 7 and 30. Patients with preoperative CEA levels <5.0 ng/ml were excluded. An exponential trend line was drawn using the three CEA values. Patients were categorized into three groups based on R(2) values calculated through trend line, which indicates the correlation coefficient between exponential graph and measured CEA values: exponential decrease group (group 1: 0.9 < R(2) < or = 1.0), nearly exponential decrease group (group 2: 0.5 < R(2) < or = 0.9), and randomized clearance group (group 3: 0.5 < or = R(2)). We then analyzed the CEA clearance pattern as a prognostic indicator. RESULTS: With a median follow-up of 57 months, the 5-year overall survival was 62.3% vs. 48.1% vs. 25% and the 5-year disease-free survival was 58.6% vs. 52.7% vs. 25% among groups 1, 2, and 3 (P = 0.014, P = 0.027, respectively) in patients with stage III rectal cancer. For those with stage II rectal cancer, the 5-year overall survival rate of group 1 was significantly better than groups 2 and 3 (88.8% vs. 74.1%, respectively, P = 0.021). CONCLUSIONS: the postoperative pattern of CEA clearance is a useful prognostic determinant in patients with rectal cancer. Patients with a randomized pattern of CEA clearance after tumor resection should be regarded as having the possibility of a persistent CEA source and may require consideration of intensive follow-up or adjuvant therapy.ope