• Journal of the Korea Safety Management & Science
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• v.6 no.1
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• pp.61-70
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• 2004

In this paper, a group replacement policy based on a failure count is analysed. For a group of identical repairable units, a maintenance policy is performed with two phase considerations: a repair interval phase and a waiting interval phase. Each unit undergoes minimal repair at failure during the repair interval. Beyond the interval, no repair is made until a number of failures. The expected cost rate expressions under the policy is derived. A method to obtain the optimal values of decision variables are explored. Numerical examples are given to demonstrate the results.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2001.10a
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• pp.222-225
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• 2001

Policy introducing open access to the wireless network has been under discussion in the Korean mobile telecommunications industry. The policy, which directs mobile operators to allow mobile portals other than their own ones to access their network and subscribers, is expected to vitalize mobile Internet market through competition among portals. This study analyzes the impact of the policy in terms of welfare of mobile Internet users and profit of mobile contents providers. We also cover the influence of mobile Internet fee on anticipated results of the policy

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1995.04a
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• pp.939-954
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• 1995

We propose a policy for controlling the release of raw wafers into the semiconductor wafer fabrication lines. The proposed policy exploits up-to-date factory floor information gathered by tracking systems used to calculate the time and amount of a new release to minimize mean flow times and mean tardiness while maintaining the maximum output rates of the system. Extensive computer experiments show that the proposed policy results in significant improvements for the same output rates compared to existing release rules.

• Korea Journal of Hospital Management
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• v.3 no.1
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• pp.238-260
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• 1998

This article describes the theoretical foundations of government policy for hospitals in terms of correcting market failure and enhancing equity. It then discusses the characteristics that desirable payment systems should have, and the effects of the DRG-based prospective payment system on hospital behavior, its financial performance, hospital industry, and health care expenditure. The rationales and impacts of other public policies for hospitals such as antitrust and fair trade regulation, dissemination of practice guidelines and hospital mortality information, regulation of hospital capital investment, and tax policy are also discussed.

• Journal of Korean Society for Quality Management
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• v.14 no.2
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• pp.28-32
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• 1986

This paper studies a new replacement policy in case that average repair cost rate increases linearly in proportion to time t. At the moment when the repair cost rate reaches or exceeds a fixed level, the component is replaced. This policy is compared with the economic lifetime policy. Advantages of this model according to the increment of replacement cost is shown in numerical example.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.5B
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• pp.414-426
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• 2003

XML is being used to describe components and applications in a vendor and language neutral. Therefore it already has a role in distributed system. XML is also being used as a data interchange format between components and applications in loosely coupled large-scale application. Until now, policy is described for specific applications and devices. Its use has been very limited. In current network management system, we can only invoke predefined operations and actions using policy-based network management. The main motivation for the recent interests in policy-based networks is to support dynamic adaptability of behavior by changing policy without recoding or stopping system. For these reasons we present the use of the XML for describing the policy and PIB(Policy Information Base) in COPS-PR. It improves flexibility and interoperability among heterogeneous network systems. It also can add new functionality into network components. In this paper, we propose a dynamically extensible network management architecture using XML-based PIB.

• Health Policy and Management
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• v.21 no.2
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• pp.179-194
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• 2011

Although there have been studies regarding the separating policy of dispensary and medical practice, little study have provided a concrete empirical evidence to what extent the policy objectives are achieved. In this paper, we try to provide empirical evidence whether the policy separating dispensary from medical practice achieved the policy objectives, which representatively are reducing the mis-use or over-use of anti-biotic prescriptions and medicines, and decreasing the government spending for the cost of pharmaceutical support. By comparing the average of the rate of change of the number of medicines prescribed, the rate of anti-biotics prescribed, and the government spending for the cost of pharmaceutical support between the areas where the separation policy was implemented and the exceptional areas, we concluded that it is difficult to conclude that the policy separating dispensary and medical practice achieved its policy objects, as it first announced to achieve in the introduction of the policy in 2000. However, the limitation of this study is that the data, that can thoroughly analyze the effect of separating policy of dispensary from medical practice, cannot be collected as expected. Hence, we could not use a parsimonious empirical model to evaluate the effect of the policy introduced in 2000. Rather we used a simple statistical method to extract enough empirical evidence fro m the data available. In the near future, we would expect to see more research that analyze the exact effect of policy separating dispensary and medical practice with concrete empirical model using more sophisticated dataset.

• 대한예방의학회:학술대회논문집
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• 1999.10a
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• pp.123-124
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• 1999

• Health Policy and Management
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• v.26 no.3
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• pp.153-154
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• 2016

• Proceedings of the Korean Nuclear Society Conference
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• 2005.10a
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• pp.1001-1002
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• 2005