• 한국군사과학기술학회지
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• 제17권5호
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• pp.637-642
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• 2014

Military communications have limited resources such as poor bandwidth and insufficient link capacity. Numerous hosts in conventional IP networks, including the Tactical Information Communication Network (TICN), the tactical communication system of the Army, focus heavy traffic on a single server via end-to-end connections and in which data delivery latency is caused by exchanging routing information. Content-Centric Networking (CCN), one framework of Information-Centric Networking (ICN), is a novel Internet paradigm in which data can be accessed by the name of the content instead of the location information. This paper provides content caching strategies for applying CCN to military tactical IP networks based on TICN environment.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2018년도 춘계학술발표대회
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• pp.194-197
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• 2018

EDISON 웹 포털을 기준으로 경진대회 시스템을 구축하기 위해서는 다양한 전문분야의 역할의 분담이 필요하다. 또한 사용자의 팀 구성, 평가 반영 결과의 가시화 등의 구체적인 서비스 분할과 사용자에게 부여된 권한에 따른 서비스 차별화가 필요하다. 따라서 본 논문에서는 경진대회를 진행함에 있어 다양한 사용자의 권한에 기반하여 경진대회 서비스를 구축하였다. 또한 현재 서비스를 구축하고 경진대회를 진행하였으며, 그 결과 각 사용자의 권한에 따른 서비스를 분할하여 제공하였다.

• 대한교통학회지
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• 제31권1호
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• pp.47-56
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• 2013

본 연구는 기존 정성적/평면적으로만 다뤄왔던 간선도로의 망기능을 입체적/정량적으로 분석하기 위하여 새롭게 정의한 네트워크(network)과 네트워킹(networking)에 입각한 망기능 분석방법론을 제시하고, 실제 간선도로망에 적용하여 망기능을 분석하였다. 이를 위해 간선도로 네트워크를 상부도로인 고속국도와 이와 연계된 하부도로(일반국도, 지방도, 도시부도로 등) 간을 입체적 관점에서 분석하였고, 기존의 물리적인 연결성 측면 외에도 교통정보 및 주행조건 등 운전자(이용자) 측면의 망기능을 고려한 세부기능지표(networking index, NI)를 도출하여, 망기능의 효율성을 정량적으로 평가할 수 있는 네트워킹 지수(networking rate, NR)를 산정하였다. 주요 분석결과로서, ITS 분야인 교통정보기능이 네트워킹 구성요소에 중요한 영향요소임을 입증하였다. 이는 기존에 물리적 연계 중심의 도로정비방안 도출보다 교통정보를 고려한 네트워킹 정비의 필요성을 보여준다. 그리고, 실제 고속국도 중심 간선도로 망기능을 분석한 결과로서 전국대비 수도권에서 낮은 망기능을 보이고 있는데, 상 하부도로 간 대체우회기능을 수행할 수 있는 구간기능과 교통정보기능이 상대적으로 떨어지는 것이 주요 원인으로 분석되었다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.2174-2177
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• 2003

Internet is exposed to network attacks as Internet has a security weakness. Network attacks which are virus, system intrusion, and deny of service, put Internet in the risk of hacking, so the damage of public organization and banking facilities are more increased. So, it is necessary that the security technologies about intrusion detection and controlling attacks minimize the damage of hacking. Router is the network device of managing traffic between Internets or Intranets. The damage of router attack causes the problem of the entire network. The security technology about router is necessary to defend Internet against network attacks. Router has the need of access control and security skills that prevent from illegal attacks. We developed integrated security management framework for secure networking and kernel-level security engine that filters the network packets, detects the network intrusion, and reports the network intrusion. The security engine on the router protects router or gateway from the network attacks and provides secure networking environments. It manages the network with security policy and handles the network attacks dynamically.

• 한국정보기술응용학회:학술대회논문집
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• 한국정보기술응용학회 2005년도 6th 2005 International Conference on Computers, Communications and System
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• pp.207-210
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• 2005

Ubiquitous computing is one of the key technology areas in the "Project on Development of Ubiquitous computing and network technology" promoted by the Ministry of Science and Technology as a frontier business of the $21^{st}$ century in Korea, which is based on the new concept merging physical space and computer-based cyber space. With recent advances in Micro Electro Mechanical System (MEMS) technology, low cost and low-power consumption wireless micro sensor nodes have been available. Using these smart sensor nodes, there are many activities to monitor real world, for example, habitat monitoring, earthquake monitoring and so on. In this paper, we introduce web-based real environment monitoring system incorporating wireless sensor nodes. It collects sensing data produced by some wireless sensor nodes and stores them into a database system to analyze. Our environment monitoring system is composed of a networked camera and environmental sensor nodes, which are called Mica2 and developed by University of California at Berkeley. We have modified and ported network protocols over TinyOS and developed a monitoring application program using the MTS310 and MTS420 sensors that are able to observe temperature, relative humidity, light and accelerator. The sensed data can be accessed user-friendly because our environment monitoring system supports web-based user interface. Moreover, in this system, we can setup threshold values so the system supports a function to inform some anomalous events to administrators. Especially, the system shows two useful pre-processed data as a kind of practical uses: a discomfort index and a septicity index. To make both index values, the system restores related data from the database system and calculates them according to each equation relatively. We can do enormous works using wireless sensor technologies, but just environment monitoring. In this paper, we show just one of the plentiful applications using sensor technologies.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.69-71
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• 2005

Earthquake disaster frequently happens in Shizuoka Prefecture and it is commonly predicted that a giant earthquake(Tokai Earthquake) could occur in the near future. When a giant earthquake happens, extensive damage of lifelines will be expected. It is considered that the collection of damage information and the establishment of a communication network system are very important in order to restore lifelines quickly. And geographic information system(GIS) might playa very important role to grasp the spatial information of lifeline damage in a natural disaster. The authors' group had a research project to study a lifeline restoration support system with image processing and ad hoc networking in a natural disaster. The objectives of this presentation are to introduce our project and to show some results of our study. The authors finally constructed the GIS for the integration of damage information acquired by image processing and ad hoc networking.

• 한국통신학회논문지
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• 제37권5B호
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• pp.395-404
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• 2012

이 논문에서는 지능형 교통 시스템(ITS)를 위해 IEEE 1609.3 표준 문서에서 규정한 WAVE 네트워킹 서비스를 위한 표준 프로토콜 개발 결과를 제시한다. 그 중에서 특히 WAVE Management Entity(WME)와 WAVE Short Message Protocl(WSMP) 개발 결과에 중점을 두고 설명한다. 검증을 위해서 Traffic Management System(TMS)과 RSU 관리자의 개발 결과와 이를 이용한 교통사고 발생 시나리오에서의 TMS의 동작을 통해 개발 결과에 대한 검증 결과도 제시한다.

• World Technopolis Review
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• 제1권2호
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• pp.118-128
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• 2012

This paper suggests policy implications for Daedeok Innopolis (DI) in Daejeon by comparing the development and problems of DI with the San Diego biotechnology cluster. DI has strengthened its capabilities for technology commercialization and business activities after having created and managed by the Korean central government. While DI has been successful in increasing the number of institutes, researchers, research activities, however, its dynamism is not rigorous enough to be a regional innovative system. San Diego's scientific and entrepreneurial community shows the importance of formulating social and spatial contexts for mutual interactions and engagements. In San Diego, UCSD and networking organizations, especially CONNECT, are central in promoting interactions and communications between regional constituents including entrepreneurs, academics and local governments. The mechanisms of San Diego biotechnology imply that DI should provide more attention to designing and developing social and geographical space that can unleash the creative power of social interactions. To build an innovative regional system, DI needs to renovate its space, public-private relationship and networking platforms.

• 제어로봇시스템학회논문지
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• 제16권10호
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• pp.1018-1023
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• 2010

The CAN (Controller Area Network) system is the most dominant protocol for in-vehicle networking system because it provides bounded transmission delay among ECUs (Electronic Control Units) at data rates between 125Kbps and 1Mbps. And, many automotive companies have chosen the CAN protocol for their in-vehicle networking system such as chassis network system because of its excellent communication characteristics. However, the increasing number of ECUs and the need for more intelligent functions such as ADASs (Advanced Driver Assistance Systems) or IVISs (In-Vehicle Information Systems) require a network with more network capacity and the real-time QoS (Quality-of-Service). As one approach to enhancing the network capacity of a CAN system, this paper introduces a CAN system with dual communication channel. And, this paper presents a distributed message allocation method that allocates messages to the more appropriate channel using forecast traffic of each channel. Finally, an experimental testbed using commercial off-the-shelf microcontrollers with two CAN protocol controllers was used to demonstrate the feasibility of the CAN system with dual communication channel using the distributed message allocation method.

• International Journal of Computer Science & Network Security
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• 제21권9호
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• pp.297-302
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• 2021

The development of various phishing websites enables hackers to access confidential personal or financial data, thus, decreasing the trust in e-business. This paper compared the detection techniques utilizing URL-based features. To analyze and compare the performance of supervised machine learning classifiers, the machine learning classifiers were trained by using more than 11,005 phishing and legitimate URLs. 30 features were extracted from the URLs to detect a phishing or legitimate URL. Logistic Regression, Random Forest, and CatBoost classifiers were then analyzed and their performances were evaluated. The results yielded that CatBoost was much better classifier than Random Forest and Logistic Regression with up to 96% of detection accuracy.