• The KIPS Transactions:PartD
• /
• v.11D no.2
• /
• pp.443-452
• /
• 2004

The paper presents an intelligent space management system for ubiquitous computing. The system is basically a home/office automation system that could control light, electronic key, and home appliances such as TV and audio. On top of these basic capabilities, there are four elegant features in the system. First, we can access the system using either a cellular Phone or using a browser on the PC connected to the Internet, so that we control the system at any time and any place. Second, to provide more human-oriented interface, we integrate voice recognition functionalities into the system. Third, the system supports not only reactive services but also proactive services, based on the regularities of user behavior. Finally, by exploiting embedded technologies, the system could be run on the hardware that has less-processing power and storage. We have implemented the system on the embedded board consisting of StrongARM CPU with 205MHz, 32MB SDRAM, 16MB NOR-type flash memory, and Relay box. Under these hardware platforms, software components such as embedded Linux, HTK voice recognition tools, GoAhead Web Server, and GPIO driver are cooperated to support user-friendly intelligent space.

• Information Systems Review
• /
• v.12 no.1
• /
• pp.189-207
• /
• 2010

We applied IT ecosystem analysis to Smart Grid system in this paper and thereby compared various arguments about Smart Grid technologies against the reality of the power generation and distribution in South Korea with a special attention to the power distribution side. Our work attempts to propose policy implications in the government-level based on a firm-level analysis using the framework of the competitive strategy and advantage. The Smart Grid initiative is expected to enhance the efficiency in the power generation and distribution. In addition, the Smart Grid initiative aims at capturing the opportunities in the electric power business such as parts, components, supplies, and system products in the global arena. Prerequisites of smart distribution system include building infrastructure based on smart distribution parts, information systems, communication technologies, and developing various application programs and interfaces that would interact with the consumers. Consumers are expected to play an integral role by changing their consumption patterns in response to dynamic pricing and quality choices enabled by the smart distribution technologies. In order to induce the consumers to participate actively in the program, firms and policy makers should consider providing consumers economic incentives and proper education for better understanding of new technologies. Our work helps policy makers and firm better understand the nature of technology and stakeholders for the successful implementation of smart distribution technologies.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2007.05a
• /
• pp.1342-1347
• /
• 2007

최근 수자원 분야에서 GIS의 활용은 유역의 수리, 수문분석을 위한 모형의 입력자료 생성 및 모의 결과를 가시화, 이에 따른 유역관리 시스템의 구축 등 폭넓게 활용되고 있다. 또한 국가지리정보시스템에 조사를 통해서 수치지형도 및 주제도를 구축, 구축된 자료의 표준화를 실시하고 있는 실정이다. 그러나 수자원 분야에서 GIS를 활용하기 위한 기술은 주로 선진국을 중심으로 발전하여 왔기 때문에 우리의 실정에 맞지 않아 활용측면에 있어 신뢰할 만한 결과를 얻지 못하고 있는 실정이다. 따라서 국내 상황을 고려하면서 수자원이라는 전문분야 적용에 적합한 GIS(HyGIS)를 개발하고 여기에 수리, 수문분석모형을 연계하여 국내 실무분야에 적용함에 있어 편의성과 실용성을 구비한 모형개발이 이루어져야 한다. 따라서 본 연구에서는 국내 소프트웨어 GeoMania(HyGIS)에 의한 GIS 정보처리의 자동화를 기반으로 하여 실무에서 활용도가 높은 수문모형인 HEC-HMS 및 HEC-1과 수리모형인 HEC-RAS를 연계 및 통합하기 위해서 HyGIS에서 DLL형태로 제공되도록 하였다. HyGIS에서는 수문학적 DEM 분석 및 공간정보 생성, 선형참조가 가능한 하천 네트워크 생성, 유역 시설물 관리 등의 기능을 제공하며 COM(Component Object Model)을 기반으로 개발된 시스템으로 다른 소스로부터 개발된 컴포넌트를 연계하여 시스템의 기능 확장을 손쉽게 수행할 수 있도록 하였을 뿐만 아니라 공간 DB는 GeoMania의 고유 DB인 GSS를 이용한다. HyGIS-HMS는 HyGIS를 통한 국내 유역의 지리정보를 활용하여 HEC-HMS 뿐만 아니라 HEC-1을 추가하여 사용자의 기호와 편의에 따라 모형을 선택할 수 있도록 하였으며 HEC-1의 결과를 가시화하기 위해서 챠트 기능을 추가하였으며 매개변수를 자동으로 산정할 수 있도록 시스템을 구축하였다. HyGIS-RAS는 국내 하천유역에 대해서 기구축 되어있는 하천관리지리정보시스템(RIMGIS)자료를 직접 활용하도록 구성되어있고 자료를 활용하여 제내지와 제외지를 통합하여 TIN분석을 실시하여 범람 홍수해석에 활용할 수 있도록 하였다. 하천수리해석의 기능을 보강하기 위해 역산조도계수 산정모형, 상류-사류 천이류 구간에 대한 부등류 해석모형, 범람 홍수류에 대한 홍수위 산정모형, 하천수리계산시의 불확실도 해석모형 등의 새로운 기능을 추가하여 제시하였다. 모든 입출력자료는 프로젝트 단위별로 운영되어 data의 관리가 손쉽도록 하였으며 결과를 DB에 저장하여 다른 모형에서도 적용할 수 있도록 하였다. 그리고 HyGIS-HMS 및 HyGIS-RAS 모형에서 강우-유출-하도 수리해석-범람해석 등이 일괄되게 하나의 시스템 내에서 구현될 수 있도록 하였다. 따라서 HyGIS와 통합된 수리, 수문모형은 국내 하천 및 유역에 적합한 시스템으로서 향후 HydroInformatics 구현을 염두에 둔 특화된 국내 수자원 분야 소프트웨어의 개발에 기본 토대를 제공할 것으로 판단된다.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.38 no.12
• /
• pp.1217-1222
• /
• 2010

This paper describes the Model-Based Development(MBD) process behind the flight control software of a close-range unmanned aerial vehicle(KUS-9). An integrated development environment was created using a commercial tool(MATLAB $Simulink^{(R)}$), which was utilized to design models for linear/nonlinear simulation, flight control law, operational logic and HILS(Hardware In the Loop Simulation) system. Software requirements were validated through flight simulations and peer reviews during the design process, whereas the models were verified through the application of a DO-178B verification tool. The integrity of automatically generated C code was verified by using a separate S/W testing tool. The finished software product was embedded on two different types of hardware and real-time operating system(uC/OS-II, VxWorks) to perform HILS and flight tests. The key findings of this study are that MBD Technology enables the development of a reusable and an extensible software product and auto-code generation technology allows the production of a highly reliable flight control software under a compressed time schedule.

• Journal of agriculture & life science
• /
• v.45 no.1
• /
• pp.109-117
• /
• 2011

The antioxidant activities of 60% ethanol extracts from different parts (leaf, stem, and root) of Artemisia argyi using an in vitro system were examined to find a possibility as natural antioxidant substances. The highest total phenolics (23.08 mg/g) was obtained by 60% ethanol extract of leaf. The scavenging activity of 60% ethanol extract from different parts of A. argyi on the DPPH and ABTS radical was raised with increasing amount of extracts, and 60% ethanol extract from leaf showed the highest radical scavenging activities. The leaf extract presented the highest reducing power and strong inhibitory effect on autooxidation of linoleic acid. In MDA formation using mouse brain homogenates, the 60% ethanol extracts of A. argyi also exhibited antioxidant activity as inhibition of MDA (71.38% at $200{\mu}g/mL$). Therefore, these results suggest that the 60% ethanol extract of A. argyi leaf possess excellent antioxidant activities and thus it has great potential as a source for natural antioxidant.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.38 no.6
• /
• pp.681-688
• /
• 2020

The Under Space Integrated Map has been constructed consistently from '15 construction projects until the present time in an effort to implement the "ground sinking prevention method" for the purpose of strengthening underground safety management. The constructed Under Space Integrated Map is utilized to provide information to the person in charge at local government through application of the system of underground information based on the administrative network and to deliver this to specialized underground-safety-effects -evaluation organizations through map extraction based on a floor plan. It suffers from a limitation in its practical use, however, since information is only provided, without promoting a separate renewal project. Although in Section 1 of Article 42 in the Special Law Concerning Underground Safety Management the content pertaining to submission obligations of completion drawings related to underground information including change and renewal are stated explicitly in order to solve this problem, submission is not sufficient since a submission window based only on the administrative network is operated. Accordingly, the Ministry of Land, Infrastructure, and Transport constructed an online system for submitting completion drawings, in an attempt to change the method by which entities involved in underground development directly submitted completion drawings. In this study, a DB standard relating to submitting completion drawings was designed and applied in order to construct an auto-renewal system based on submitted completion drawings, which will be extended to cover the range to underground structures hereafter.

• Proceedings of the Korean Society for Agricultural Machinery Conference
• /
• 2017.04a
• /
• pp.134-134
• /
• 2017

전북지역의 130여개 스마트온실 중에서 주요한 10여개의 주요 온실에 대한 온습도, 이산화탄소, 광센서 및 기타 센서의 사용실태에 대한 조사를 수해하였다(2016년 9월~12월). 온실의 선정은 온실의 종류(비닐/유리)와 복합제어기 종류(국산/외산)를 중심으로 조사하였다. 국내외 업체의 장단점, 스마트기기의 활용과 문제점, 클라우드 기반의 3세대 한국형 스마트온실의 적용기반에 대한 조사를 수행하였다. 융복합 제어기와 센서는 자체의 신뢰성 이외에 운용상의 알고리즘 차이에서 오는 문제로 인해 농가에서 측정결과에 대한 신뢰성이 낮고, 측정이 부정확하고 일일측정 데이터에 대한 활용이 어렵고, 설정 값을 사용자가 직접 계산하고 값들을 입력해주어야 한다는 단점에 대한 의견이 대부분이다. 외국 제품은 데이터 측정값의 활용이 용이하고 복합 환경 상황에 알맞게 자동 계산 시스템이 체계적으로 작동하여 제어에 반영되며 국내 업체 설정 값의 범위보다 세밀하게 설정이 가능하다는 장점이 있으나 설치비용이 국내대비 3~4배 높고 고장 시 A/S가 느린 편이며 영어로 구성된 복잡한 시스템이기 때문에 100% 활용하기 어렵다는 단점이 있다. 스마트기기 활용은 복합 환경제어를 하는 농가이면 국내 업체와 외국 업체 모두 활용하고 있으며 주로 스마트 폰으로 사용되고 전용 어플이 아닌 PC원격 제어 소프트웨어인 팀뷰어(Teamviewer)를 이용하여 복합제어기 PC를 직접 조작하여 사용한다. 클라우드 활용으로는 복합환경제어기 회사에서 작물별 제어 방법과 데이터 정보를 제공하지 않는 점에 대한 농가의 불편함이 많은 편으로 작물별 농사방법이 많고 지역별 농사방법이 다르기 때문에 조사한 전북지역의 농가 10곳 모두 클라우드를 사용하지 않는 것으로 조사되었다. 다양한 온실 및 생육환경에 따른 표준화된 운영의 문제점을 개선하여 스마트팜에서 중요한 역할을 수행하는 복합센서의 표준시험방법과 절차를 개발하여 관련산업의 발전에 응용할 필요성이 있으며 단순한 하드웨어의 표준화 또는 개선방향보다는 농가의경험과 누적된 토양,작물 등의 재배 생육정보를 이용한 작물생육모델과 온실모델의 일치를 통해 센서-생육환경예측-검증방법의 포준화가 필요한 것으로 사료된다.

• The KIPS Transactions:PartD
• /
• v.11D no.1
• /
• pp.195-202
• /
• 2004

This paper describes the development of a window manager based on the real time operating system, Qplus-p, for small internet appliance. Current window managers for small internet appliance are originally developed for desktop environment and then modified for embedded systems. So they have inadequate functions for small internet appliances and do not perfectly support Hangul. The Qplus-P window manager adds the Hangul processing function to Matchbox window manager, a royalty-free window manager for small Internet appliance and provides a new Hangul input method called Amikey. Input mode can be changed automatically from Hangul mode to English mode and vice versa by Amikey. In addition, Qplus-P window manager provides Hangul supported basic applications such as web browser, e-mail client, MP3 player. We developed the window manager by porting open sources to target system after adding Hangul supported functions to them.

• KIPS Transactions on Software and Data Engineering
• /
• v.5 no.4
• /
• pp.181-186
• /
• 2016

Recently, the surveillance system research has focused because Unmanned Aerial Vehicle(UAV) has the ability to monitor wide area. When the wide area are monitored, controlling UAVs repeatedly by pilots invokes the cost problem to operate UAVs. If monitoring path can be defined in advance, the cost problem can be solved by controlling UAVs autonomously based on the monitoring path. The traditional approach generates multiple motor primitives based on flied GPS locations. However, the monitoring points by UAVs are not considered by the generated motor primitives, the surveillance by UAVs is not performed properly. This paper proposes a motor primitive structure for surveillance UAVs to be flied autonomously. Motor primitives are generated automatically by setting surveillance points to denote surveillance targets accurately.

• Journal of Convergence for Information Technology
• /
• v.8 no.1
• /
• pp.89-94
• /
• 2018

Recently, interest and necessity for the insect industry has been increasing. Insects, which are referred to as the second food, are being used in various fields. Interest in mass production of insects has been increasing in various fields, and the need for research on environmental analysis for them is also increasing. In some countries in other developed countries, automated breeding systems have been developed that incorporate IoT. However, it is limited to be applied to many kinds of insects, and the price is so expensive that it has not been utilized in farm households. Therefore, we have carried out a study to make an optimal system that can be used practically in a farmhouse. Protaetia brevitarsis used for medicinal and edible purposes. It automatically checks the moisture of sawdust medium, which has the greatest influence on the environment of the slugs, which is the third larva of the grasshopper, and informs the result through the LED. It is applied to the environment to create an optimal breeding environment. I want to make it.