• 한국IT서비스학회:학술대회논문집
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• 2009.11a
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• pp.443-449
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• 2009

최근 USN과 소형 임베디드 장치에 IP 스택을 구현한 결과들이 활발히 소개되고 있으며 Non-IP 기반의 USN이나 임베디드 장치와는 차별화된 요소에 대한 논의도 함께 진행되고 있다. 집중화 되어 있던 자원이 IP기반 기술을 통해 컴퓨팅 환경, 서비스 환경이 분산되어 가고 있듯이 제한된 자원을 갖는 센서 노드에 IP가 부여 되었을 때 호스트 중심의 형태와는 다른 형태의 구성이 가능하게 되고 이를 통한 새로운 서비스 패러다임으로의 전환을 기대하고 있다. 이에 본 논문은 IP가 부여된 센서노드, 소형 임베디드 장치로 구성 가능한 서비스 구조를 제안하고자 한다.

• Journal of the Korean Society for Railway
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• v.13 no.1
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• pp.125-130
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• 2010

The government makes an effort to disperse the centralization of Seoul through the its surroundings development for relieving the various social problems caused by the capital region concentration. But, the planless rail system development in the capital region have made it difficult to approach into Seoul city center from its surroundings. Through Seoul metro line 9, constructed by private company first in Korea, that has operation plan with normal and express train together, we would like to study up on promotion of passenger service quality such as "the improvement of the accessibility to Seoul city center from its surroundings" and "service of various pattern of trains".

• Journal of the Korea Society of Computer and Information
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• v.11 no.1 s.39
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• pp.157-165
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• 2006

This paper proposes a new output-buffered multicast ATM switch with tandem crosspoints switching fabric, named the MTCOS(Multicast Tandem Crosspoint Output-buffered Switch). The MTCOS consists of multiple simple crosspoint switch fabrics, named TCSF(Tandem Crosspoint Switch Fabric) , and concentrated output buffers for efficient multicasting. The TCSF resolves the cell delay deviation problem which the self-routing crossbar switches inherently have. Further, it offers multiple concurrent pathes from one input to multiple output ports. It also provides multi-channel switching by easy software configuration and has several desirable characteristics such as scalability, high Performance, and modularity. A shared traffic concentration and output queuing strategies of the MTCOS results in lower cell loss as well as lower cell delay time over a wide range of multicast traffic. Furthermore, it has lower hardware complexity than that of the SCOQ and Knockout multicast switch to achieve the same Knockout concentration rate as the conventional switches. It is shown that the proposed switch can be easily applied to design high performance for any multicast traffic by analytic analysis and computer simulation.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.16 no.27
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• pp.27-34
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• 1993

It is requested to promote technology development and productivity that is way to conquer the competition of technology and quality and pressure of cost caused by a rise in prices. To pace up the market fluctution and the deepening of competion, there need a strategical thoughts of production management. Corporation's efforts concentrated in specific business field are desired to insure the initiative competion. In this paper, the concentration aimed at gaining higher competion is analized in the condition of equal enviornment and/or situation.

• Journal of the Korean Geographical Society
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• v.31 no.3
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• pp.529-541
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• 1996

The Korean economy has recently changed from industry-based economy toward information-based one, empha-sizing on information utiliation and technological development. It is important to examine the background for the incoming information society and spatial aspect of infromation, because informati-zation process itself contains spatial features like spatial concentrtion and dispersion. This paper generally focuses on the socio-cultural aspects of the informati-zation aspects. The main questions are as follows: 1) what are the ain questions of the exsisting Korean case studies on the informatization; 2) how can we find the charateristics of spatial concentration of informatization by informatization indices; 3) is there any relationship between the degree of informatiztion and regional development? The results of this study can be found in the following facts: (1) The exsisting studies cannot be generallized as spatial analysis on the informatization In general, they focus only a single aspect of information industry or information job. Futhermore, their spatial unit of analysis is limited to provincial level, rather thn city-level micro study. (2) There are big differences between the Capital region, especially Seoul, and others with regard to the socio-cultural aspects of informatiation. Such informatization is concentrated in Seoul. Inchon and Kyeonggi-do, which are the better positions in information intensive activities. (3) The regional differences for the level of informatization are much bigger than those for the level of welfare, suggesting that the informatization tends to concentrate in specified large cities like Seoul. It is clear the Korea is now entering the initial stage of information society.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.05a
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• pp.224-227
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• 2020

현 식품 공급망은 중앙 집중화되어 있고, 투명하지 않으며 복잡한 시스템으로 인해 많은 문제점이 존재한다. 판매자는 싼값에 팔고 소비자는 비싼 값에 구매하는 문제가 지속적으로 대두되고 있으며 유통 과정에서 생기는 문제에 대한 책임 추적이 어렵다. 본 논문에서는 각 유통 단계에서 생성되는 IoT 센서 데이터를 블록체인 기술에 적용하며 이를 활용하는 방안에 대해 제안한다. 제안 모델을 통해 유동 과정과 데이터에 대한 신뢰성을 확보하고 제품의 원산지, 배송 과정, 보관 상태를 비롯한 유통 정보들을 추적할 수 있다.

• The KIPS Transactions:PartD
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• v.11D no.3
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• pp.703-708
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• 2004

Currently the amount of general letter mail in Korea is on an increasing trend; especially it shows the seasonality that is concentrated in the end of the month or the year. However, the situation is not treated appropriately Moreover. manpower insufficiency if the carriers causes the poor service and the heavy burden of work. Under the existing conditions, the various efforts such as development of the automatic sequence sorting system and construction of the address database are given in order to quicken mall process and lighten the carriers' burden But the inconsistent addressing and the various expressions of address drop the systems and the carriers off in efficiency. In this study, we present the Korean postal addressing standards to make it possible to improve the performance of address recognition and help postmen to sort the mail; particularly focusing on the substance. After analyzing the domestic system, the information structure and the problems of postal address, we propose four fundamentals and the standards including synonyms and acronyms. In addition, we suggest several considerations for mail format. We expect that this study could support the postal service in Korea as a basic standard.

• Journal of Korea Society of Digital Industry and Information Management
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• v.9 no.4
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• pp.21-31
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• 2013

It is not easy to control the unstructured digital contents efficiently which are usually created while carrying out the wide scope of managerial activities. Moreover, besides the existing EDMS method, new methodologies including new-type servers and clients like SBC, VDI, thin client, zero client, etc are said to be more efficient for managing digital contents. Usually, digital contents has been created and stored in the dispersed individual computers like laptop or desktop. Today, due to the advent of new technologies and devices for computer systems and network capacity, it's possible to store whole digital contents within centralized storage like EDMS. In this paper, it is shown how digital contents can be controled through selection of which approaches are used for individual users and storage servers. For alternatives, we explained implementation, merits and demerits, selection criteria, etc. And a case of the implementation of digital contents control is shown for the reference of related systems.

• 한국IT서비스학회:학술대회논문집
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• 2003.11a
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• pp.446-453
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• 2003

서버에 집중화될 트래픽과 부하를 사용자 네트워크 전체로 분산시킬 수 있는 방식을 멀티미디어 스트리밍에 적용하게 되면 이를 채택하지 않았을 경우와 대비하여 그 성능에 큰 편차를 보일 수 있다. 이를 채택한 경우와 그렇게 하지 않았을 경우의 성능대비를 어떻게 어떤 기준치를 가지고 할 것인가가 본 연구의 목적이라 할 수 있다. 최초의 소스를 제공하고 있는 스트리밍 서버로부터 말단에 있는 클라이언트 까지 여러 단계의 연결을 주어진 특정한 환경하에서 (1) 피라미드 계층처럼 형성하여 제시된 "실험군(P2P 방식)"과 (2) 순차적인 방식으로 연결한 그간의 방식 "비교군(유니캐스트 방식)" 간의 성능대비(Performance Evaluation)를 하기 위해서 필요한 척도(Criteria)와 준거틀(Framework)을 제시하는 것이 본 연구의 주된 내용이라 할 수 있다.

• Journal of Korea Port Economic Association
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• v.31 no.4
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• pp.169-187
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• 2015

Ports as central factors of the logistics industry and principal bases in industrial activities play a significant role in the development of the social economy. This paper takes the throughput data from 2000 to 2014 of 10 container ports located in China as the research object with the Gini coefficient and employs the shift-share analysis. It aims to analyze the changes in port concentration and movement of container throughputs and propose a stage of development port system in China. The results are as follows. First, the system of container ports clearly moves northward. According to the above shift-share analysis, the throughput moves from the Pearl River Delta to the other two regions. This indicates that the center of Chinese container port system moves northward. Second, container port diversification development takes a representative position in the change of container throughput space structure. According to the calculation results of Gini coefficient, diversified development gradually predominates the change of container throughput space structure.