• Journal of the Economic Geographical Society of Korea
• /
• v.14 no.4
• /
• pp.671-683
• /
• 2011

The technical development of transportation and communication increases freedom of location choice. This higher freedom allows to company can pursues bigger profit than before. Company's separated spatial configurations tend to go to most optimal location, so some places showed unexpected agglomeration. This study conducted to prove "dispersed concentration" for specific example, pharmaceutical enterprises, in real business world. As a result, separation of spatial configuration clearly observed as product output goes bigger and R&D's depth goes deeper. And spatial concentration of each function was found. Most headquarters are located in Seoul, R&D centers make agglomeration at some spaces. Plants' location concentrated until 1990s, but, in 2000s, plants expand out of metropolitan area.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.22 no.10
• /
• pp.2282-2291
• /
• 1997

This paper describes an IC design for the HCR protocol which is designed to accomodata both real and non-real time data for high-speed multimedia services. The designed HCR IC is perfectly compatible with the conventional ATM IC's and physical layer IC's. The standard UTOPIA interface is adopted. Simulation results show that the proposed HCR IC operates very well according to the priority and the quota state of the real and non-real time data. The proposed HCR IC can be merged into the conventional ATM IC's without any modification and will be useful for multimedia service applications.

• Proceedings of the Optical Society of Korea Conference
• /
• 2003.07a
• /
• pp.216-217
• /
• 2003

마이크로프로세서의 전송대역 증가와 함께 요구되어지는 집적형 광자기술은 좁은 영역에서 복잡한 광 배선들을 나열함에 따라 기존의 Electrical Interconnection들의 전자기적 분산이나 방출에 의한 결함 문제를 극복함으로써, 높은 전송 효율을 갖는 Optical Interconnection을 구현 할 수 있게 되었다. 그러나 집적화시 고려되는 배선들 간의 상호 연관성과 효율적인 특성이 문제시 되는데 이를 위한 경향성과 최적화 요소들이 필요하게 되었다.(중략)

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.17 no.8
• /
• pp.1755-1760
• /
• 2013

In this paper, when the pulses propagate on a uniform microstrip line, the distortion of pulse signal caused by dispersion is investigated in time domain. We analyzed dispersion characteristics according to dielectric constant and structure of transmission line, and compared propagating characteristics for square and gaussian pulse according to pulse width, pulse amplitude, and propagation velocity. The results of this paper are compatible to the trade-off determination of relative permittivity, substrate height, strip width and pulse width of signal pulse when a design of MIC and MMIC is necessary.

• Journal of the Korean Geographical Society
• /
• v.41 no.6 s.117
• /
• pp.639-656
• /
• 2006

The purposes of this paper are to examine the mechanism of the new economic spaces and to suggest directions of geographical research in the knowledge-based information society. It introduces the background of the formation of the new economic spaces and examines network, embeddedness, and agglomeration and dispersion as mechanisms of the new economic spaces. Based on the result of case studies of Kangnam area, the most active innovation region in Korea, and of Sunchang, one of the backward regions in Korea, the paper points out that new economic spaces are now developing even in the peripheral areas. Considering the result of theoretical discussions and case studies, the paper suggests three directions for future geographical research such as research from a integrative viewpoint, development of new methodologies of geographical research, and policy directed research in geography.

• Journal of Navigation and Port Research
• /
• v.34 no.10
• /
• pp.823-831
• /
• 2010

The shipping business industries which are the transport and logistics intensive in Busan, have been small sized and scattered in many areas, that is why they could not create a synergy effect utterly. Because of the need to develop the shipping business cluster complex in Busan in order to concentrate those industries and attract high value added firms, this study tries to suggest an approach to build the cluster. Firstly, how various shipping business related firms in Busan and capital area demand the cluster complex are searched through questioning survey. Secondly, the gradual scheme to integrate lots of business companies, governmental authorities and educational institutes and global strategy to invite domestic and foreign organizations in Myeong Ji area near to Busan New Port. Thirdly, the expected economic benefits of the cluster construction are calculated quantitatively.

• Proceedings of the KGS Conference
• /
• 2003.05a
• /
• pp.129-133
• /
• 2003

오늘날 정보통신기술의 발달로 인한 세계화에 따라 시공간적인 장벽을 초월하여 경제활동의 공간적 분산이 이루어지는 가운데에서도, 경쟁력을 확보하기 위해 특정지역에 동일한 산업이 집중하는 현상을 보이고 있다. 또한 지식기반경제 시대의 도래로 지역을 발전시킬 수 있는 혁신적인 지역산업의 중요성이 증대되고 있다. (중략)

• Ceramist
• /
• v.12 no.3
• /
• pp.35-44
• /
• 2009

• Journal of the Economic Geographical Society of Korea
• /
• v.26 no.3
• /
• pp.202-222
• /
• 2023

This study traces the growth and changes in the spatial distribution and characteristics of media cluster in Seoul by focusing on the co-evolution of film and TV production. To identify the spatial distribution and aggregation of film and broadcast TV production, we measure their spatial auto-correlation based on Moran's I and LISA, using the data from the Census on Establishments of the National Statistical Office. In addition, the eleven semi-structured interviews conducted with workers in the media industries, such as film crews and TV drama producers, help to clarify the complexity and dynamics of diverse factors that affect spatial distribution of media cluster. This multi-method study shows the increasing polycentricity of media cluster in the last decade. Gangnam, Mapo, Yeouido, Gangseo-Yeongdeungpo, and Seongsu have emerged as key hubs for media industries, particularly in light of changes in the transportation system and the real estate market. The finding indicates the co-evolution of film and broadcast TV production, demonstrating how the characteristics of the creative industry and metropolitan changes are intertwined with each other in shaping the geographical pattern of the media cluster.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.39C no.5
• /
• pp.447-455
• /
• 2014

In this paper, we consider a representative integral imaging method in glasses-free 3D image processing and propose a prioritized transmission scheme for guaranteeing a received video quality in error-prone environments. According to the correlation of pixels consisting of each voxel of integral image, we set the priority differently and apply the modulation level according to this priority value. That is to say, the corresponding pixels with small variance are set to a high priority and transmitted by using a low level modulation that is robust under transmission errors, but the corresponding pixels with greater variance are set to a lower priority and transmitted by using a high level modulation that has a high bit error rate but fast transmission rate. Result shows that the proposed scheme that applies the error-robust modulation level to the important image bit stream with the high priority improves the peak to sidelobe ratio (PSR) of the received 3D image, compared with a typical method that use the same modulation level without distinction of priorities.