• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.27 no.8C
• /
• pp.729-740
• /
• 2002

This paper studies the issues arising in the virtual topology reconfiguration phase of Multi-wavelength Routed Optical Networks. This reconfiguration process means to change the virtual topology in response to the changing traffic patterns in the higher layer. We formulate the optimal reconfiguration policy as a multi-stage decision-making problem to maximize the expected reward and cost function over an infinite horizon. Then we propose a new heuristic algorithm based on node-exchange to reconfigure the virtual topology to meet the traffic requirement. To counter the continual approximation problem brought by heuristic approach, we take the traffic prediction into consideration. We further propose a new heuristic reconfiguration algorithm called Prediction based Multi-stage Reconfiguration approach to realize the optimal reconfiguration policy based on predicted traffic. Simulation results show that our reconfiguration policy significantly outperforms the conventional one, while the required physical resources are limited.

• Journal of the Korean Society for Library and Information Science
• /
• v.50 no.2
• /
• pp.197-213
• /
• 2016

This study aims at suggesting mid- and long-term development plan (vision, core values, strategic goals and functional performances, major tasks and detailed action plans for each strategy, organizational and human resources management, shared responsibility with the National Library of Korea which is main library in collection and services of policy information, and cooperation and collaborative exchange programs) for the National Library of Korea, Sejong. This study is based on the appropriateness that the library should enhance its visibility through focusing on the role as the specialized library in charge of public policy information services if it wished to ensure the identity of a branch of the National library of Korea for the comprehensive collection, preservation, and nationwide services of public policy information.

• Journal of the Korean Society for Railway
• /
• v.6 no.3
• /
• pp.156-162
• /
• 2003

Due to almost all tracks of new Kyoungbu high-speed lines(HSL) consisting of bridges and tunnels, HSR operational safety management is very important factor for passenger safety and preventing catastrophic event. Especially, it is important to approach the scene of the accident and assist in saving lives as soon as possible under emergency conditions. Therefore it is essential to prepare access methods and available resources in advance in order to support emergency correspodances promptly and effectively. This paper persents an application of geographical information system(GIS) for developing emergency management system as well as batabase system on tracks and facilities, electric/communication equipment and safety equipment required to support emergencies. The on-site information on the proximity of HSL is expressed on the numerical map, which can be helpful to call external supports such as medical service, local authorities, police offices, fire brigades, and etc. for the emergency situations.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.27 no.1
• /
• pp.27-57
• /
• 2016

This study was designed to derive and propose the qualities, qualifications, duties, etc. needed for policy information librarians who work in the policy-related special libraries. To do this, literature related to professional librarians was analyzed comprehensively with respect to qualifications, qualities, duties presented and needed in domestic and international jobs sites. The information derived through this process was developed into a questionnaire and a survey conducted targeting as subjects specialized librarians in related fields. The results indicated that the highest required LIS degree for both policy information librarian and for policy related fields is a Master's Degree. Additionally in investigating the importance of related career experience required for a policy information librarian, work related to policies reference services appeared to be the most important. On the issue of important qualities required of a policy information librarian, 'outstanding policies related data navigation capabilities' was the highest, followed by 'knowledge of information policy and knowledge of policy related resources', 'knowledge of the current trends of policies related fields', and 'smooth interpersonal skills.' The survey also indicated that with respect to the duties of the information librarian planning of policy information services had the highest score, followed by the providing of policies information services, and then collection management.

• The Journal of Information Systems
• /
• v.13 no.1
• /
• pp.135-159
• /
• 2004

In industrialised countries, innovation is a key source of economic growth. Rrsearch is a key driver of technological innovation and involves the process of systematic investigation and/or experimentation to discover new knowledge. The Governments'industry innovation policy supports a business focus on Research and Development (R&D) through a range of programs in order to achieve these aims. The Innovation Statement (DISR 2000, 20010, launched by the Australian Prime MinisterJanuary 2001, commits an additional ${\$}$3 billion over five years to encourage and support innovation. The Australian Government aims toworld competitive firms and strong research capability in industry to strengthen Australia's international competitiveness and increase national prosperity. It develops policies and programs to enhance investment in innovation. The Australian Government has established a number of R&D funding support programs aimed at increasing the level of R&D in Australia. The backbone of these programs is the tax concession program, which is made up of the 125 per cent R&D tax concession, the 175 per cent premium tax concession and the tax offset. Over 4000 businesses take advantage of the tax concession scheme, which costs the government around ${\$}$400mi11ion a year. This cost is expected to rise to over hall a billion by 2005-06 (commonwealth or Australia, 2003). Ensuring these resources are invested where they provide significant national economic benefits is a major policy issue. In this sense, this paper looks at the appropriateness, effectiveness and efficiency of the R&D tax concession with costs and benefits analysis.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.8 no.5
• /
• pp.211-219
• /
• 2008

This paper is proposed context-aware based access control, model by extending original access control model. In this paper, we survey the recent researches about security model based context-aware such as xoRBAC and CAAC. For exactly policy evaluation, we make an addition Context Broker and Finder in existing CAAC security model. By this security model, Context information and context decision information is able to be collected easily for more correct policy decision. This paper controlled access of possible every resources that is able to access by user's event and constraint from primitive access resources. In this paper proposed security model can be offer dynamically various security level and access authority method alone with specified policy and constraint adjustment at user's role.

• The Journal of Information Technology
• /
• v.6 no.4
• /
• pp.135-146
• /
• 2003

In the era of so-called knowledge-based economy, the creation and utilization of IT and new knowledge are recognized as core factors to enforce IT industry and to increase national competitiveness. Advanced countries, therefore, have heavily invested their resources on IT sector and introduced competition into the telecommunication market. ASEAN countries are trying to make themselves informationized society through IT market liberalization and industry development. They are investing lots of resources to construct IT infrastructure such as wired and wireless network and consider informationized society promotion as top national agenda. In this effort, Korea is a benchmarking model for them. Successful entering into ASEAN market requires close analysis and correct understanding of its IT policy and infrastructure. In this paper, therefore, tried to analyse IT policy and infrastructure of three ASEAN countries, which have high potential of economic cooperation in IT with Korea. And based on the analysis, tried to find out ways to enter into ASEAN.

• Informatization Policy
• /
• v.23 no.1
• /
• pp.74-93
• /
• 2016

This paper proposes Korean national science and ICT policies in artificial intelligence (AI) field. After analyzing the AI trends in major countries as an initiative for global competitiveness, we suggest for new solutions for nutcracker threats and provide policy recommendations for strengthening competitiveness and commercialization in AI field of Korea. Korea's AI status was diagnosed in the order of governance, research and development (R&D), technology commercialization, law and legislation, and human resources strategy. In conclusion, it proposes improvement of governance, procession of long term future market initiative R&D, development of AI commercialization platforms, preparation of research friendly law and environment, and the nurturing of practical and converging human resources system.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.11 no.11
• /
• pp.5264-5281
• /
• 2017

Multihop relay-based cellular networks are attracting much interest because of their throughput enhancement, coverage extension, and low infrastructure cost. In these networks, relay stations (RSs) between a base station (BS) and mobile stations (MSs) drastically increase the overall spectral efficiency, with improved channel quality for MSs located at the cell edge or in shadow areas, and enhanced throughput of MSs in hot spots. These relay-based networks require an advanced radio resource management scheme because the optimal amount of radio resource for a BS-to-RS link should be allocated according to the MS channel quality and distribution, considering the interference among RSs and neighbor BSs. In this paper, we propose optimal resource planning algorithms that maximize the overall utility of relay-based networks under a proportional fair scheduling policy. In the first phase, we determine an optimal scheduling policy for distributing BS-to-RS link resources to RSs. In the second phase, we determine the optimal amount of the BS-to-RS link resources using the results of the first phase. The proposed algorithms efficiently calculate the optimal amount of resource without exhaustive searches, and their accuracy is verified by comparison with simulation results, in which the algorithms show a perfect match with simulations.

• 한국디지털정책학회:학술대회논문집
• /
• 2003.12a
• /
• pp.365-376
• /
• 2003

The persons who realize e-Business should have capabilities of understanding in both information technology and business processes. It is expected that current education policies and systems could not meet needs of e-Business human resources in Korea. In this paper, we define and categorize human resources for e-Business as to application areas and expertise levels. An intensive field survey has been conducted. Based on the survey results, several strategic and practical alternatives are suggested for development of e-Business human resources in Korea.