• 한국정보통신학회논문지
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• 제26권2호
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• pp.265-270
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• 2022

4차 산업혁명 시대가 도래하면서 보안의 패러다임도 바뀌고 있다. 클라우드 컴퓨팅과 코로나바이러스로 인해 원격근무가 활발해지면서 업무 환경이 변화하고 동시에 공격기법들도 지능화·고도화되는 현 상황에서기업에서는 새로운 보안 모델을 도입해 현재 보안시스템을 더 강화해야 한다. 제로 트러스트 보안은 모든 것을 의심하고 신뢰하지 않는다는 핵심 개념을 기반으로 모든 네트워크를 감시하고 접근 요청자에 대한 엄격한 인증과 최소한의 접근 권한을 허용함으로써 보안성을 높인다. 또한, 접근제어 강화를 위한 제로 트러스트 기반 보안시스템을 위해 식별 주체 및 데이터에 대한 NAC와 EDR 활용과 MFA를 통한 엄격한 신원 인증에 대해 설명 한다. 본 논문은 기존 보안시스템의 한계점을 극복하는 제로 트러스트 보안시스템을 소개하고, 접근제어를 강화하는 방안을 제안한다.

• International Journal of Computer Science & Network Security
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• 제22권12호
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• pp.171-177
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• 2022

The number of people who own indoor plants is growing today, but as a result of their busy lifestyles-such as work or travel-as well as a lack of enthusiasm in caring for their plants, their plants wither. The use of an irrigation control system with a surveillance camera can assist such folks in taking care of their plants. Such a device can assist in remotely watering plants at predetermined times and checking on the health of the plants. The proprietors would be able to live comfortably without feeling bad thanks to this change. Internet access is required for this technology in order to monitor the plants and control the watering through apps. A sensor is installed in the soil to monitor soil humidity and send data to the microcontroller for irrigation, allowing the owner to schedule irrigation as they see fit and keep an eye on their plants all day. With the use of a remote irrigation control system, the plants will grow properly and be irrigated with the proper amount of water, and the owners will be so glad and delighted to watch their plants. Knowing the time and quantity of water are vital parts of the plant growth.

• 융합보안논문지
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• 제23권4호
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• pp.3-15
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• 2023

비대면 서비스의 확산과 원격근무 등의 생활이 일상화되면서 메타버스의 이용자가 급증하였으며, 세컨드 라이프를 위한 금융, 부동산 등 자산 실거래로써 사람들의 생활반경이 자연스럽게 확대되고 있다. 하지만 실세계에서와 같이 경제 활동을 자유롭게 하기에는 전혀 다른 쟁점의 보안 이슈들이 발생할 수 있으며, 기존의 사이버 공간과 비교해도 완전히 새로운 유형의 문제들이 발생할 가능성이 크다. 본 논문에서는 이러한 문제를 해결하기 위해 인증 및 프라이버시를 중점으로 방안을 제안한다. 메타버스에서 수집되는 데이터의 특수성에 기반하여 데이터 전처리 기능을 개선하고, W3C의 DID의 표준 방식을 준수하는 가운데 NFT를 활용한 메타버스 내 새로운 인증 서비스를 정의하며, 이에 대한 시스템 설계 및 개발 방안을 제시한다. 제안한 시스템은 하이퍼레저 인디 블록체인을 활용하여 구현하고, 결과를 분석하여 본 연구의 적용 가능성 및 우수성을 검증한다.

• 한국융합학회논문지
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• 제11권10호
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• pp.37-44
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• 2020

최근 COVID 19 팬데믹 현상으로 공공기관의 재택근무가 활성화 되고 있는 상황으로 공공기관에서의 업무는 시간과 공간의 제약이 사라지는 스마트워크 업무 환경으로 급변하고 있다. 하지만 현재 상당수의 공공기관은 인터넷망과 업무망을 분리하는 물리적 망분리 시스템으로 인해서 효율적인 스마트워크 업무환경을 위한 보안모델이 미흡한 상황이다. 이에, 본 논문에서는 공공기관의 물리적 망분리 환경에서 스마트워크를 구현하기 위한 현재의 한계를 기술하고 이를 보완하기 위한 업무환경에 필요한 보안 모델을 제안하고자 한다. 관련 연구로 SSL VPN에 대하여 설명하고 SSL VPN의 보안 한계를 극복하기 위한 SDP(Software Defined Perimeter), RDP(Remote Desktop Protocol), VDI(Virtual Desktop Infrastructure)의 보안 모델 연구를 통해서 스마트워크 업무 모델을 설명함으로써 물리적 망분리 보안 가이드를 준수하면서 공공기관에 적합한 스마트워크 환경 보안모델 방안을 제시하고자 한다.

• 한국수소및신에너지학회논문집
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• 제24권3호
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• pp.264-274
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• 2013

Piping systems play an important role in gas and oil transferring system. In the piping system, there are many elements, such as valves and flow meters. In order to check their normal operating conditions, each signal from each element is displayed on the monitor in the pipe control room. By the way, there are several accidental cases in the piping system even if all signals from the local elements are judged to be normal on the monitor in the control room. Further, opposite cases often happen even the monitor shows abnormal while the local elements work normal. To overcome this abnormal functions, it is not so easy to construct the environment in which sensors detecting the working states of all elements installed in the piping system. In this paper, a new non-contact measurement technique which can calculate the elements' delicate displacements by using a PIV(particle image velocimetry) and diagnose their working states by using a neural network is proposed. The measurement system consists of a host computer, a micro system, a telescope and a high-resolution camera. As a preliminary test, the constructed measurement system was applied to measure delicate vibrations of mobile phones. For practical application, a pneumatic system was measured by the constructed system.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.551-554
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• 2006

House management is very important in water resource protection in order to provide sustainable drinking water for about four millions population in northern Taiwan. House management can be a simple job that can be done without any ingredient of remote sensing or geographic information systems. Remote sensing and GIS integration for house management can provide more efficient management prescription when land use enforcement, soil and water conservation, sewage management, garbage collection, and reforestation have to be managed simultaneously. The objective of this paper was to integrate remote sensing and GIS to manage houses in a water resource protection district. More than four thousand houses have been surveyed and created as a house data base. Site map of every single house and very detail information consisting of address, ownership, date of creation, building materials, acreages floor by floor, parcel information, and types of house condition. Some houses have their photos in different directions. One house has its own card consists these information and these attributes were created into a house data base. Site maps of all houses were created with the same coordinates system as parcel maps, topographic maps, sewage maps, and city planning maps. Visual Basic.NET, Visual C#.NET have been implemented to develop computer programs for house information inquiry and maps overlay among house maps and other GIS map layers. Remote sensing techniques have been implemented to generate the background information of a single house in the past 15 years. Digital orthophoto maps at a scale of 1:5000 overlay with house site maps are very useful in determination of a house was there or not for a given year. Satellite images if their resolutions good enough are also very useful in this type of daily government operations. The developed house management systems can work with commercial GIS software such as ArcView and ArcPad. Remote sensing provided image information of a single house whether it was there or not in a given year. GIS provided overlay and inquiry functions to automatically extract attributes of a given house by ownership, address, and so on when certain house management prescriptions have to be made by government agency. File format is the key component that makes remote sensing and GIS integration smoothly. The developed house management systems are user friendly and can be modified to meet needs encountered in a single task of a government technician.

• 한국멀티미디어학회:학술대회논문집
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• 한국멀티미디어학회 2001년도 춘계학술발표논문집
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• pp.373-377
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• 2001

The telemedicine & distance education system that this paper suggests has been designed on the CTE(Collaborative Telemedicine & distance Education) framework, which is an integrated multimedia environment. This is a CBM-based collaborative telemedicine & distance education type, different from the conventional doctor based general practice, and is an integrated multimedia telemedicine & distance education system capable of many application developments using information super highway. This paper presents the content regarding electronic medical examination chart and data treatment for efficient medical examination and prompt treatment by realizing mutual conversation type remote medical examination system among 3 parties(patient, doctor, pharmacist) on internet base. And, The implementation of this new teaming system should be designed with multimedia application development platform base which is interfaced with computer engineering, computer network technology, CSCW (Computer-Supported Cooperative Work) technology, and education engineering.

• 한국산업융합학회 논문집
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• 제21권6호
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• pp.389-394
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• 2018

Remotely operated vehicle(ROV) and autonomous underwater vehicle(AUV) have been used for underwater surveys, underwater exploration, resource harvesting, offshore plant maintenance and repair, and underwater construction. It is hard for people to work in the deep sea. Therefore, we need a vision control system of underwater submersible that can replace human eyes. However, many people have difficulty in developing a deep-sea image control system due to the deep sea special environment such as high pressure, brine, waterproofing and communication. In this paper, we will develop an Ethernet based remote image control system that can control the image mounted on ROV.

• 한국산업융합학회 논문집
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• 제25권2_1호
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• pp.161-168
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• 2022

This study proposed a new approach to impliment a robusut control of comsumer-friendly flexible manipulator with five joint for untact working in filed work-site. The output redefinition approach was used to overcome the non minimum phase characteristic of the system. The new output is defined so that the zero dynamics related to this output are stable. The control strategy is based on an computed torque method which is applicable to a class of time-invariamt phase linear systems whose uncertainties appear in output loop stable. The controller is composed of a stabilizing joint controller and an output redefinition tracking controller. Experimental results are also presented to verify the effectiveness of the proposed control scheme.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.803-803
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• 2002

Several environmental problems have occurred and extremely affected throughout the East Asia region. Satellite imageries and spatial information have been used in the applications of environmental and natural hazard management for years. Sharing these data and resources in the community is considered as one of the optimal solution. It would consequently bring cost saving to all participated countries and eventually be beneficial to mankind as a whole. Encouraged by these factors, ASEAN＋3 Satellite Image Archive for Environmental Study project was submitted by Thailand in the 3rd Senior Official Meeting between ASEAN, China, Japan and Korea (SEOM＋3 Meeting) and approved by the SEOM＋3. The main objectives of this project are to share satellite images, information related to natural resources and environmental issues, and to provide data information services to all ASEAN＋3 countries. The proposed system is basically embedded by distributed system. The network of data users, data providers, and the center will be established using the Internet. User can access, navigate, display, and even download some archived contents. Its service site can be generally categorized into two parts, which are environmental related data archive and the Integrated satellite image catalogue. The extension of web based GIS is also planned for future development so that GIS users can conduct some preliminary analysis directly on line. This presentation will indicate scope of work, system, working scenario, and work plan of the project.