Park Sung-Hoon’s research while affiliated with Korea University and other places

With the advances of wireless information technology, many application softwares such as ERP gradually has increased. But those application softwares have some serious problems such that performance degradation and concurrency control resulting from the limited bandwidth and unreliability of wireless communication, In this paper, as a solution to take around those limitations, we propose a middleware framework for wireless communication environments.

This paper is about the hardness of Leader Election problem in asynchronous distributed systems in which processes can crash but links are reliable. Recently, the hardness of a problem encountered in the systems is defined with respect to the difficulty to solve it despite failures: a problem is easy if it can be solved in presence of failures, otherwise it is hard [9]. It is shown in [9] that problems are classified as three classes: F (fault-tolerant), NF (Not fault-tolerant) and NFC (NF-completeness). Among those, the class NFC is the hardest problem to solve. It is also shown in [9] that the construction of Perfect Failure Detector (problem P) belongs to NFC. In this paper, we show that Leader Election is also one of NFC problems by using a general reduction protocol that reduces the Leader Election Problem to P. We use a formulation of the Leader Election problem as a prototype to show that it belongs to NFC.

This paper investigates possible paths of East Asian Monetary Integration. After a brief analysis of current discussions on East Asian economic and monetary integration, the paper presents possible implications of Europe's EMU project for East Asia and the political economy of East Asia as constraints on East Asia's way towards monetary integration. The paper argues that whichever paths East Asia selects, countries in the region have to devise measures that can lead to stability convergence, which was the main success factor for the introduction of single currency in Europe. The paper also presents seven possible paths for East Asian monetary integration, and argues that only four of them are feasible strategic choices. The paper concludes that although all these four paths are potential candidates, they have to be complemented by additional policy instruments. The paper suggests these additional measures be targeted at intensifying stability convergence in East Asia, which was the most important prerequisite for a successful introduction of Euro, the single currency for twelve member countries of the European Union. After a brief efficiency and feasibility test the paper selected the option of "developing the Chiang Mai Initiative to a Multilateral Financing Scheme" as the best short- and medium-term strategy towards monetary integration.