• Journal of Power System Engineering
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• v.15 no.5
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• pp.16-21
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• 2011

The large scale decisive battle will be gradually reduced on the sea in the future and surface combatant ship installed advanced weapon units as well as propulsion system will be continuously increased. The high level of military technology leads to appear state-of-the-art weapon system using high power energy. As a results, fossil fuel powered main prime mover as diesel engine and gas turbine which are composed of mechanical propulsion system should be decreased from combatant ship in the near future. The new building naval combatant ship with the latest technology has electric based propulsion method of the hybrid type combined with mechanical and electrical drive. U.S. and Royal Navy, especially, select the integrated fully electric based propulsion system for the next generation combat ship and play an important roll for developing them. In this context, this paper was focused on the deduction of implications through analyzing the combatant ship propulsion system using diesel and gas turbine engine which are promoted on the worldwide.

• Journal of Digital Convergence
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• v.20 no.4
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• pp.55-62
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• 2022

The purpose of this study is to investigate the role of Gyeonggi provincial governments in smart city policy. In order to satisfy the purpose of the study, we closely identified how may local governments(si. gun) have been taking participated in smart city project of the central government, and its characteristics. Then we know the detailed strategies that Gyeonggi provincial governments should do. Gyeonggi-do provincial governments enacted smart city-related ordinances in 2020 and participated in the Smart City Local Council. In the future, Gyeonggi privincial government will propose amendments to the law, review participation in the central government smart city policy project, the "integrated platform construction project of the metropolitan government model", and propel Gyeonggi-do's own smart city policy based on the blind spots of the policy.

• Journal of Korea Port Economic Association
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• v.27 no.4
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• pp.271-289
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• 2011

Mongolia as a land-locked country, has tried to diversify its foreign trade with European and Asian countries. Recently continual price rise of mineral resources also helps Mongolia have chances to gain her trading partners. Nevertheless, regulations and barriers to exports of Mongolian mineral resources in China and Russia, which are transit countries, are complex and complicated in border crossing and transshipment procedures for transit transport. This paper discusses problems and barriers to economic and efficient logistics systems and transit transport of Mongolian mineral resources, and addresses a proposal of international intermodal transport corridors for improving transit transport, and suggests international cooperation, by applying transit rights of land-locked country. Specifically, it is necessary for Mongolia to search for other international intermodal corridors besides the corridor through the port of Tianjin. It is needed to build an international organization for discussion of affirmation of logistics equipments and improvement of transit procedure in border crossing, and to raise financial feasibility in building a new intermodal corridor.

• Journal of the Korea Institute of Building Construction
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• v.10 no.6
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• pp.77-85
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• 2010

Recently, with development of core technology for supertall building construction projects, the need for an improvement of the related legal system is increasing dramatically. Therefore, the supertall Buildings R&DB Center, which is funded by the Ministry of Land, Transport and Maritime affairs (MLTM), is studying the legal system for supertall buildings. This research, as one part of the 1st year research results, aimed at studying supertall building project related issues and problems to develop supertall building elements, and conducting an importance-performance analysis (IPA) of these elements in order to conclude a strategy and direction for an improvement of the related legal system. A total of 68 supertall building elements were derived, and the IPA method was used to analyze these elements based on attribute types. Furthermore, an improvement strategy and directions were suggested for upgrading the legal system related to supertall buildings to the level of global standards. These efforts can be the base for advancing the legal systems of the domestic construction industry in all areas, including supertall building construction.

• Maritime Security
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• v.1 no.1
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• pp.119-148
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• 2020

The purpose of this study is to examine the perceptions of neighboring countries on the gray zone and to explore Korea's maritime strategy. The concept of gray zones appears in various ways from country to country. In international relations, the gray zone is a comprehensive space between war and peace. The gray zone in the ocean is an unstable space in which competition between the US and China is represented and proxy wars are possible, and the gray zone needs strategic management. This study summarizes the concept of gray zones in the maritime security field, examines the gray zone strategies of neighboring countries, and suggests Korea's gray zone strategies. In particular, the recognition of the gray zone itself is the core of the problem, and it is necessary to strengthen information sharing to clarify the problem about the gray zone and accurately recognize the gray zone situation. The CMG(Complex Maritime Geostrategy) framework attempted in this study is expected to be helpful in understanding the nature of various gray zone issues around Korea and preparing for a geostrategy based on the analysis.

• Journal of Digital Convergence
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• v.10 no.2
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• pp.47-53
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• 2012

Economic crisis, efforts to overcome the digital content industry development at home and abroad have been racing in the country's future lies in the digital content industry. Therefore, the digital content industry through vision, model identification knowledge-based global digital content market-based deployment is required. For research purposes the digital content industry to derive an alternative to national industrial development that will lay the groundwork. The deployment order for the first digital content industry, SWOT analysis performed to derive the Korean-specific model. As a result, measures based on the advancement of digital content industry as a long-term vision and specific goals are presented as staged. The age of convergence of the u-media content markets in government, corporations, consumers, and these form the structure of a virtuous cycle distribution systems for energy by being active, synergistic effects are obtained. Above all, based on the content industry to secure internal and external growth is key. Vision of the digital content, the growth momentum of the national social development policies to be used as a role model by changing the way a series of courses is required.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37 no.3C
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• pp.267-276
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• 2012

In this paper, we propose the future strategy of convergence IT workforce program through the question analysis of convergence IT promising area. We analyzed the future strategy of convergence IT workforce program from different angles in the aspects of convergence IT promising area, workforce model operation, and infrastructure & system support. Based on this analysis, we suggest the key strategy of each area. As a result, we concluded that the outcome of the proposed strategy is visible when the upper three aspects are efficiently coordinated and the strategy is effectively proceeded. Also, we concluded that selection of promising areas through overall analysis, the necessity of efficient correlation plan establishment among state-industry-university, and the necessity of state-run systematic support and state policy establishment are very important.

• Information Systems Review
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• v.13 no.1
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• pp.13-32
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• 2011

As the ubiquitous technology has been widespread, the u-service development in the private sector is increasing these days. Especially, consisting of various life spaces, a mixed-use complex started actively utilizing the ubiquitous technology in order to provide users with differentiated services. In this paper, a new development methodology of the u-service for a mixed-use complex is proposed. Because the ultimate purpose of the u-service in a mixed-use complex is to guarantee profitability, the u-service must accelerate commercial activities among various users in the complex. The u-service development methodology of a mixed-use complex proposed in this paper firstly defines various perspectives for the u-service and identifies specific u-service elements in cross points of the perspectives. Then with those u-service elements, the methodology generates a u-service pool. Finally, after evaluation process, target u-serviced to develop are selected. Having designed the u-service development methodology, we expect the methodology to contribute the successful implementation of u-service model for a mixed-use complex.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.4
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• pp.419-427
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• 2020

In the case of large combined weapon systems, such as submarines, the application, and verification of methods of setting the reliability, availability, and maintainability (RAM) target values for conventional weapon systems are limited. Submarines are complex weapon systems with the characteristics of the diversity of operation mode summary and mission profiles (OMS/MP) as well as equipment complexity because they are composed of multiple weapon systems, such as sonar systems and armed systems. Therefore, this study analyzed the development cases of existing weapon systems, i.e., the RAM target value-setting cases, and derived the problems and limitations of the cases to present measures to improve the setting and verification of the ram target values of submarines. In addition, submarines operate around the world and have different operating and maintenance conditions. Therefore, a submarine's ram target values should be set and verified centering on the mission essential equipment and mission critical equipment, instead of all components that constitute weapon systems. This study examined a method to verify the required performance RAM target-value setting, considering the characteristics of submarines as well as the physical performance requirements for the systems and equipment of submarines that must be considered when implementing national defense acquisition projects for submarines.

• Journal of Korea Port Economic Association
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• v.23 no.1
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• pp.61-73
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• 2007

Creating more efficient and effective intermodal transportation service in Northeast range is a critical issue because of more increased trade volume & demand for intermodal service in the world market and geographical barriers associated with goods transportation, especially in Korea, China and Japan. This study examines the possibility of Rail-ferry introduction and possible route in Northest area which can provide each country mutual economical and logistical satisfaction. But, this study requires more empirical and concrete examination based on the cost & benefit analysis.