• 한국통신학회논문지
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• 제40권6호
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• pp.1091-1101
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• 2015

오랜기간 컴퓨터 분야의 연구주제였던 캐시 메커니즘은 네트워크 영역에서 웹 캐시로 응용되었다. 응답시간 감소, 네트워크 자원 절약 등의 다양한 이점을 갖는 웹 캐시는 교체정책에 의해 성능이 좌우되므로, 보다 나은 교체정책의 설계를 위해 웹 캐시가 운용되는 환경에 대한 분석과 고찰이 필수적이다. 따라서 과거에 비해 급속도로 다변화된 현재 웹 환경에서는 그러한 변화를 반영할 수 있는 교체정책이 요구된다. 따라서 본 논문에서는 현재 웹 환경의 특성을 규정하고, 이에 적합한 캐시 교체정책을 설계하고 평가한다.

• Journal of Information Technology Applications and Management
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• 제23권4호
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• pp.1-23
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• 2016

The growth of information and communication technology (ICT) has led to a rapid of business paradigm shift incurred in the creation of new social/market value, changes of a value chain and elements producing a value creation, and enlargement of the scope of market competition. It leads to the change and evolution of industrial structure, requiring innovations of policy and institution. However, most studies that have focused on the effect of policy and institution on innovation are based on thick description and qualitative evidence, while paying little attention to these linkages in an empirical way. Hence this study has attempted to empirically analyze policy and institutional factors affecting innovation performance, particularly attention to ICT industry in OECD countries. The findings derived from the empirical analysis provide important implications for catch-up countries in relation to the innovations of policy and institution for effective innovation system and start-up ecosystem.

• East Asian Economic Review
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• 제17권2호
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• pp.207-241
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• 2013

The notion of green growth emerged in 2009. Since then, policy makers and practitioners have largely adopted the term. Although rather intermittently, there have been academic observations on green growth, with the term often being cited as a paradigm and a policy guide for generating new sources of growth. The most important reasons for the surge in green growth today as a new trend and an international agenda item are the rather unsatisfactory results and pitfalls of sustainable development, which has failed at promoting a tangible international environmental principle or a concrete policy framework. Green growth has been proposed as an alternative simultaneously to foster the dynamics of global environmental governance and to reinvigorate the world economy. This study examines to what extent green growth plays a complementary role in existing global environmental governance. Available evidence provides reasonable grounds for arguing that a positive outcome may well be expected from the evolution of green growth architecture and followed by practical policies. It became a global agenda out of a few influential national governments' control. However, decision makers in the leading countries, both developed and developing must be willing to continue implementing what has been discussed and agreed thus far, beyond changes in political leadership and administrations.

• Journal of Preventive Medicine and Public Health
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• 제40권6호
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• pp.447-453
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• 2007

Although the New National Health Promotion Plan 2010 target to reduce health inequalities, whether the program will be effective for reducing the health inequalities in Korea remains quite unclear. More and more developed countries have been started to concentrate on comprehensive policies for reducing health inequalities. The health policies of the UK, Netherlands, and Sweden are the most wellknown. I propose that a comprehensive blueprint for tackling health inequalities in Korea should be made and that it must contain five domains: a target, structure and process, life-course approach, area-based approach, and reorganization of health care resources. The target should be based on determinants of health and more attention should be paid to socioeconmic factors. The structure and process require changes from the national health care policy based on medical services to the national health policy that involves the establishment of a Social Deputy?Prime Minister and the strengthening multidisciplinary action. A life-course approach especially focused on the early childhood years. Area-based approach such as the establishment of healthy communities, healthy schools, or healthy work-places which are focused on deprived areas or places is also required. Finally, health care resources should be a greater investment on public resources and strengthening primary care to reduce health inequalities. The policy or intervention studies for tackling health inequalities should be implemented much more in Korea. In addition, it is essential to have political will to encoruage policy action.

• 보건행정학회지
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• 제28권3호
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• pp.233-239
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• 2018

A rapid decrease of total fertility rate to 1.08 in 2005 prompted the Korean government to plan and implement a '5-year plan for ageing society and population policy' starting from 2006. The 1st and 2nd 5-year plans had not shown any discernible impact on the fertility and the 3rd 5-year plan was launched in 2016. However, the fertility rate is going down further. The author reviewed the contents and assessment reports of the fertility promotion plan to suggest ideas for complementing the shortcomings of it. Author defined the major determinants of marriage and child birth as philosophy, politics, sense of value, social norm, culture, healthcare, and education. The plan was examined in view of these determinants. Transformation of Korea from an agricultural society to an industrialized society in a short period of time had brought about changes in most of the determinants of marriage and child birth; in particular philosophy and sense of value. These aspects were not put into consideration in the plan. Author suggested to launch a social education program for the general public to establish a sound philosophy of life, reform the sense of value on family, child birth and education, and cultivate the skill to draw a consensus through discussions on the social issues. A special program to promote marriage of women at the optimum age for child birth was proposed. The government should implement well balanced policy for economic development and labor. Multidisciplinary approach was recommended for these tasks.

• STI Policy Review
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• 제8권1호
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• pp.1-22
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• 2017

There has been a pronounced increase in research and development (R&D) expenditure in Singapore over the last two decades, with government spending accounting for a sizeable share. This increase has been spurred by public policy emphasis on research and innovation as engines of economic growth. This paper analyses the impact of R&D on economic performance in Singapore from 1978 to 2012 through the use of time series analysis. The Cobb-Douglas based analysis shows a long-run equilibrium relationship between Total Factor Productivity (TFP) and R&D investments. We found that the short-run productivity of R&D in Singapore is comparable to smaller advanced economies in the Organisation for Economic Co-operation and Development (OECD). However, in terms of long-run R&D productivity, Singapore lags slightly behind the smaller OECD nations and far behind the G7 countries. This suggests leakage of value capture and low absorptive capacity in local firms. Possibility of productivity improvements induced by policy changes in the 1990s was considered, but no evidence of significant structural breaks was found. Lastly, Granger causality analysis reveals that public sector R&D augments private sector R&D capital, thus playing an important role in generating externalities and spillover effects. Policy implications and lessons for other middle-income countries are discussed.

• 한국농촌건축학회논문집
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• 제15권3호
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• pp.1-8
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• 2013

The housing policy of Korea has been pushed with a focus on the middle-class. This contributed to alleviate the absolute lack problem of housing, but this program for the housing policy of low-income brackets is also true as insufficient attention. Thanks to Bulk supply-oriented housing policy, the rising penetration of housing and living conditions are improving as a whole, but low-income housing problem has been exacerbated by a relative. National and local government will solve the residential housing problem of low-income brackets by expanding welfare programs, but the quality of existing housing issues and the alternative policy are regarded as insufficient. Homeless households in Korea are still nearly 400 million, Housing costs higher than income weighted for buying a home and rent payments of low-income brackets. In this study, I investigated the concept of low-income housing welfare and housing policy changes. This paper is aimed to present the basic data through the investigation and analysis residential status of low-income brackets.

• East Asian Economic Review
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• 제22권3호
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• pp.371-400
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• 2018

Although asset price is an important factor in determining changes in external balances, no studies have investigated it from the Chinese perspective. In this study, I empirically examine the underlying driving forces of China's trade balances, particularly the role of asset price and the real exchange rate. To this end, I estimate a sign-restricted structural vector autoregressive model with quarterly time series data for China, using the Bayesian method. The results show that changes in asset price affect China's trade balances through private consumption and investment. Also, an appreciation of the real exchange rate tends to deteriorate trade balances in China. Furthermore, forecast error variance decomposition results indicate that changes in asset price (stock price and housing price) explain about 20% variability of trade balances, while changes in the real exchange rate can explain about 10%.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2004년도 춘계종합학술대회
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• pp.363-365
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• 2004

온톨리지는 시맨틱 웹의 핵심 요소이며 시간이 흐름에 따라서 변화하는 특징을 가지고 있다. 온톨리지에서 발생하는 변화는 도메인 변화, 개념 변화, 메타데이터 변화 둥이 있다. 이 논문에서는 이들 변화와 시간차원을 기반으로 하는 변경 집합을 제안한다. 온톨리지 버전은 대량의 정보를 저장하고 관리해야 하는데 이를 위해서 변경 집합을 이용한 버전 저장 방법들 제안한다. 제안하는 방법들 사이에 성능을 비교하고 평가한다.

• KDI Journal of Economic Policy
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• 제44권4호
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• pp.79-108
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• 2022

This study examines the impact of sentiment shock, which is defined as a stochastic innovation to the Housing Market Confidence Index (HMCI) that is orthogonal to past housing price changes, on aggregate housing price changes and housing price volatility. This paper documents empirical evidence that sentiment shock has a statistically significant relationship with Korea's aggregate housing price changes. Specifically, the key findings show that an increase in sentiment shock predicts a rise in the aggregate housing price and a drop in its volatility at the national level. For the Seoul Metropolitan Region (SMR), this study also suggests that sentiment shock is positively associated with one-month-ahead aggregate housing price changes, whereas an increase in sentiment volatility tends to increase housing price volatility as well. In addition, the out-of-sample forecasting exercises conducted here reveal that the prediction model endowed with sentiment shock and sentiment volatility outperforms other competing prediction models.