• The Journal of the Korea Contents Association
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• v.5 no.5
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• pp.182-190
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• 2005

As computers and Internet become popular, many corporations and countries are using information protection system and security network to protect their informations and resources in internet. But the Intrusional possibilities are increases in open network environments such as the Internet. Even though many security systems were developed, the implementation of these systems are mostly application level not kernel level. Also many file protection systems were developed, but they aren't used widely because of their inconvenience in usage. In this paper, we implement a kernel module to support a file protection function using Loadable Kernel Module (LKM) on Linux. When a system is damaged due to intrusion, the file system are easily recovered through periodical file system image backup.

• Journal of the Korea Convergence Society
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• v.8 no.7
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• pp.39-46
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• 2017

Dongguan City of Guangdong province, one of the core areas of the Pearl River Delta, has also pursued economic development through the geographical advantage close to Hong Kong. In the early 1980s, small and medium-sized multinational corporations related to home appliances industry from Hong Kong invested to the Dongguan area and set up a production factory. In the mid-1990s, as Taiwanese PC manufacturers invested, local industrial clusters have developed in Dongguan with core of the IT, PC components and electronic industries. The case of the IT industrial cluster in Dongguan is a typical example of the development of Chinese manufacturing industry after the reform of China. This paper focused on the coupling strategy case of Dongguan City industrial cluster in Guangdong province, and theoretically compared the endogenous growth factor analysis(NMID) of regional industrial development with the regional differentiation of industry based on external linkage with global production network(GPN).

• The KIPS Transactions:PartA
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• v.10A no.6
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• pp.635-642
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• 2003

The radical development of recent network technology provides the basic foundation which can establish a high speed and cheap cluster system. It is a general trend that conventional cluster systems are built as the system over a fixed level based on stabilized and high speed local networks. A multi-distributed web cluster group is a web cluster model which can obtain high performance, high efficiency and high availability through mutual cooperative works between effective job division and system nodes through parallel performance of a given work and shared memory of SC-Server with low price and low speed system nodes on networks. For this, multi-distributed web cluster group builds a sub-cluster group bound with single imaginary networks of multiple system nodes and uses the web distributed shared memory of system nodes for the effective data transmission within sub-cluster groups. Since the presented model uses a load balancing and parallel computing method of large-scale work required from users, it can maximize the processing efficiency.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.656-661
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• 2008

There are many sociological methodology for the study on cyber community. Especially for the online social network which is constructed by the notion of the social network, the social network analysis can be a superior methodology for the understanding of the general phenomenon and the solutions for the problematic issues. As pointed by Manuel Castells, the problem of the unification and the fragmentation, which is came after the participation and the openness, is prevailed in cyber community by its characteristics. However, computational properties that exceed the limitation of the time and space can bestow other alternatives. The Open API in the social network services that is more popular in these days is the one of those alternatives. Therefore, the purpose of this study is to investigate the problematic phenomenon of online social network and to search the solutions for those problems with the acceptance of Open API technology.

• Journal of the Korea Society for Simulation
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• v.18 no.3
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• pp.83-90
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• 2009

Since wireless sensor networks are deployed in open environments, an attacker can physically capture some sensor nodes. Using information of compromised nodes, an attacker can launch false data injection attacks that report nonexistent events. False data can cause false alarms and draining the limited energy resources of the forwarding nodes. In order to detect and discard such false data during the forwarding process, various security solutions have been proposed. But since they are prevention-based solutions that involve additional operations, they would be energy-inefficient if the corresponding attacks are not launched. In this paper, we propose a detection method that can detect false data injection attacks without extra overheads. The proposed method is designed based on the signature of false data injection attacks that has been derived through simulation. The proposed method detects the attacks based on the number of reporting nodes, the correctness of the reports, and the variation in the number of the nodes for each event. We show the proposed method can detect a large portion of attacks through simulation.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.774-777
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• 2011

산업제어시스템(ICS: Industrial Control System)은 전력 생산, 댐 운영, 가스 생산, 수자원 관리, 원자력 발전 설비 등의 운영을 제어하고 관리하는 시스템이다. 대부분의 국가 기반 시설은 이러한 제어시스템에 의해 관리되고 있으며, 정보통신 기술이 발전하면서 업무망과 제어시스템망을 나누워 구축하며 점차 개방화되어 가고 있다. 이로 인한 IT측면에서 발생하는 사이버 공격이 비교적 폐쇄적인 제어 시스템 망으로 언제든지 이루어질 수 있으며, 실제 국내에서 독립적인 네트워크를 사용함에도 불구하고 금융권의 전산망이 마비되는 사태가 발생하였다. 또한 국외에서는 이란의 원자력 발전소 제어 시스템을 목적으로 하는 'Stuxnet' 악성코드로 인해 발전소 운용이 중단돼는 사례도 발생하였다. 산업용 시스템의 목적과 특성상 사이버 침해사고 발생 시 국가적 손실 및 생명에도 위협을 받을 수 있다. 본 논문은 과거에 보안을 고려하지 않고 구축되었던 제어시스템을 사이버 침해로부터 보호하기 위해 제어시스템을 위한 통신 프로토콜 암호화 및 화이트리스트보안 기술을 이용한 시스템 적용 방안을 소개하며, 네트워크 접속시 인가된 산업용 PC의 안전성을 평가하기 위해 요구되는 보안 플렛폼 설계를 한다.

• Information and Communications Magazine
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• v.18 no.5
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• pp.86-96
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• 2001

IP 네트워크를 기반으로 하는 차세대 통신망의 출현은 21세기 초반의 통신 환경을 근본적으로 변화시킬 것이다. 차세대 통신망은 사용자에게 제공될 서비스의 기능을 혁신적으로 향상시킬 것이며, 서비스를 제공하는 산업의 구조를 변화시킬 것이다. 통신장비 업체들은 차세대 통신망을 구축하기 위한 모든 제품을 경쟁적으로 개발하는 상황이며, 통신 사업자들은 이를 토대로 차세대 통신망을 구축하고 있다. 이에 따라서 차세대 통신망을 도입하려면 업무 프로세스, 관리기능과 정보, 제공된 서비스의 특성과 통신망의 규모와 복잡성이 반영된 운용관리시스템을 통해 구현된 효과적이고 효율적인 운용관리구조를 요구한다. 본 글에서는 이러한 차세대 통신망에 대한 개괄적인 기능 및 구성요소를 기술하고 이를 효율적으로 관리하기 위한 운용관리의 역할 및 기능에 대한 상세한 요구기능을 도출하고 분석하였다.

• Journal of Digital Contents Society
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• v.9 no.4
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• pp.759-769
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• 2008

Convergence technology stimulating participation sharing openness to the public of web 2.0 such as Open-API, Mash-Up, Syndication gives diversity to education field. The convergence in education field means the revolution toward education 2.0 and new education reflecting web 2.0 stream is called 'education 2.0'. Education environment can be the space of social network intimately linked between learners, educators and educational organization. Network technology developed in ontology language makes it possible to educate semantically which understands privatized education service and connection. Especially, filtering system by the reputation system of Amazon and the collective intelligence of Wikipedia are the best samples. Education area can adopt actively because learners as educational main body can broaden their role of participation and communicate bilaterally in the equal position. In this paper, new network architecture in contents linkage is introduced and researched for utilization and analysis of the architecture for web 2.0 technology and educational contents are to be converged. Education 2.0 service utilizing convergence technology and network architecture for realizing education 2.0 is introduced and analyzed so that the research could be a preceding research to the education 2.0 platform foundation.

• Journal of The Korean Association For Science Education
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• v.44 no.1
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• pp.77-86
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• 2024

This study analyzed students' discourse and learning to investigate the impact of using Google Docs in science classes. The researcher, who is also a science teacher, conducted classes for 49 second-year middle school students. The classes included one using Google Docs and another using traditional paper worksheets covering identical content. Students' discourse collected from each class was compared and analyzed using Epistemic Network Analysis (ENA). The findings indicated that in the class using Google Docs, the proportion of discourse related to task was higher compared to the traditional class. More specifically, discourse regarding taking and uploading photos was prominent. However, such discourse did not lead to peer learning as intended by the teacher. An analysis based on achievement levels revealed that the class utilizing Google Docs had a relatively higher proportion of discourse from lower-achieving students. Additionally, differences were observed in the types of utterances and connection structures between the higher and lower-achieving students. The higher-achieving students took a leading role in providing suggestions and explanations, while the lower-achieving students played a role in transcribing them, with this tendency being more pronounced in the class using Google Docs. Lastly, students' changes in perception regarding the cause of static electricity were visualized using ENA. Based on the research findings, this study proposes strategies to enhance collaborative learning using Google Docs, including the use of open-ended problems to allow diverse opinions and outputs, and exploring the potential use of ENA to assess the learning effects of conceptual learning.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2011.06a
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• pp.277-287
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• 2011

우리나라의 과학기술정책방향이 기존의 '모방형' 혁신체제의 구축에서 '창조형' 혁신체제의 구축 및 운용으로 전환하게 되면서 연구개발의 목표 자체가 창조적 연구의 결과물로 바뀌었다. 이에 따라, 과학기술 전문가들의 주도로 국가연구개발 투자의 방향과 내용을 기초연구 및 협력연구 중심으로 정립할 필요가 있는데, 특히 기초연구 및 창의적 연구는 개별적인 연구도 중요하지만 과학기술지식의 공유 및 협력적인 연구가 대단히 중요하게 요구되어진다고 보여진다. 최근 과학기술의 빠른 환경변화에 적응해야 하며, 그 발전과 성과에 있어서 개방형 혁신(open innovation)을 통한 돌파구를 찾아야 하는 과학기술계도 더욱 이러한 협력이 중요하게 여겨지고 있다. 본 연구는 연구회, 과총 및 과학기술유관단체 간 소통의 네트워크 구축을 통하여 과학기술 유관단체들의 전문성 향상에 공헌하는 것을 목표로 하며, 이를 통하여 우리나라의 과학기술단체들이 국내외의 과학기술 주요 이슈에 대한 공동의제를 발굴, 연구하게 하여 중장기적으로 연구회 및 과총 그리고 과학기술 유관단체의 사회적 기여도를 제고하는 것으로 목표로 한다.