• Title/Summary/Keyword: 기술적 요소

Search Result 9,645, Processing Time 0.046 seconds

Constructing of Humidity Automatic Regulation Environment to Build Effective Mushroom Growing Environment (버섯의 효과적인 생육환경 구축을 위한 자동 습도조절 환경 연구)

  • Xu, Chen-Lin;Lee, Hyun-Chang;Kang, Sun-kyung;Shin, Seong-Yoon
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.19 no.11
    • /
    • pp.2597-2602
    • /
    • 2015
  • With the development of economy and improving of people's living standards, people dietary needs will be achieved from subsistence to high nutrition and from high nutrition to healthy transformation. Mushroom as a kind of highly nutritious, low fat, rich vitamin food has a great interest among the people. This makes the mushroom into a new sunrise industry and it gradually from pure manual cultivation develops toward the fully automatic factory. In the process of mushroom factory production, regulation of environmental factors directly affects the yield and quality of mushroom. In related to the methods of mushroom cultivation, the recent technologies apply the new technology such as sensors and IT convergence services. And then cultivating mushroom is managed effectively. This paper in order to solve the above problems and construct an effective mushroom growth environment using technology such as humidity sensor construct an environment that can automatically adjust the humidity. This environment has important significance to improve the level of automation mushroom production, increase yield per unit area and quality of mushroom, increase economic efficiency of mushroom production, and enhance the competitiveness of mushroom production.

Ubiquitous Campus Model for Students Oriented (학생 중심의 유비쿼터스 캠퍼스모델)

  • Kim, Chang-Su;Lee, Jae-Hyuk;Jung, Hoe-Kyung
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.11 no.7
    • /
    • pp.1407-1413
    • /
    • 2007
  • University environment on campus has been changed faster than before in today. Especially, they have devised middle & long-term development plans such as improving the image of campus and increasing campus competitive power to overcome difficulties in campus management. Therefore, many of those have made every effort to provide convenient university services for campus students and to improve the image of campus through building a Ubiquitous-Campus. But existing systems of a Ubiquitous-Campus have not understood actual conditions of IT (Information Technology) for campus students or not provided basic environment to analyze actual conditions of efficient using the system, expectations of the following people about a Ubiquitous-Campus is getting higher md higher though. Must become technology base ubiquitous campus construction, and is real erudition that ubiquitous campus model who can utilize substantially through service construction that is required newly with student's IT infra practical use analysis hereupon such as is required to solve these problems, But there is a limitation on designing the model in rapidly changed university environment on campus. In this paper, we studied about a Students Centralized Ubiquitous Campus model through U-Learning, U-Recruit, U-Printer, and personal information history service which are based on data warehouse for students analysis which is a key point element of building a Ubiquitous Campus.

Application Examples of Daecheong Dam for Efficient Water Management Based on Integrated Water Management (통합물관리 기반 효율적 물관리를 위한 대청댐 실무적용 사례)

  • Kang, Kwon-Su;Heo, Jun-Haeng
    • Proceedings of the Korea Water Resources Association Conference
    • /
    • 2017.05a
    • /
    • pp.85-85
    • /
    • 2017
  • 효율적 물관리란 거대한 물순환 과정에서 인간이 편안한 삶을 사는데 필요한 물의 이용효율을 극대화하는 것이다. 과거의 물관리는 이원화된 수량과 수질관리, 수량중심에서는 용수공급과 홍수조절이 주요한 관심사였다. 현재는 과거의 물관리에 친수와 환경을 더한 복잡한 분야로 확대되고 있다. 통합물관리란 물을 최적으로 관리하기 위해 물관리 이해당사자간의 소통과 물 기술의 고도화를 기반으로 기존에 분산된 물관리 구성요소들(시설 정보, 수량 수질 등)을 권역적으로 관리하는 것을 말한다. 본 연구에서는 대청댐 방류에 따른 금강 하류부의 홍수추적을 위해 수행한 댐하류 소유역별 강우량 빈도분석 과정, 용담댐 방류를 고려한 대청댐 홍수도달시간 검토, Poincare Section과 신경망기법을 이용한 수문자료 예측, 추계학적 다변량 해석과 다변량 신경망해석에 의한 대청댐 유입량 산정과정, 보조여수로 건설에 따른 주여수로와 보조여수로간의 연계운영방안, 단계(관심, 주의, 경계, 심각)를 고려한 대청댐 확보수위 산정, 저수지 중장기 운영계획 수립과 댐 운영 기준수위를 결정하기 위해 누가차분방식으로 적용되는 갈수기 유입량 빈도분석에 대한 실무적용 사례를 소개하고자 한다. 강우량 빈도분석 과정은 L-모멘트방법(Hosking과 Wallis, 1993)을 적용하였고, 홍수도달시간 검토는 평균유속, 하류 수위상승 기점 영향검토, 수리학적 모형(FLDWAV, Progressive lag method 등)을 활용하였다. 카오스 이론을 도입하여 대청댐 수문자료의 상관성 검토 및 추계학적 모형을 이용한 모의발생을 유도하여 수문자료 예측을 시행하였다. 추계학적 모형과 신경망모형 연구의 대상은 대청댐으로, 시계열 자료는 댐의 월강우량, 월유입량, 최고기온, 평균기온, 최소기온, 습도, 증발량 등의 자료를 기반으로 하였다. 적용기간은 1981~2009년의 자료를 이용하여 2010년 1월부터 12월까지 12개월 동안의 월유입량을 예측하였다. 수문자료 해석의 기본이 되는 약 30년간의 자료를 이용하여 분석을 실시하였다. 대청댐의 유입량 예측을 위해 적용된 모형으로는 추계학적 모형인 ARMA모형, TF모형, TFN 모형 등이 적용되었고, 또한 신경망 모형의 종류인 다층 퍼셉트론, PCA모형 등을 활용하여 실측치와 가장 가깝게 근사화시키는 방법론을 찾고자 하였다. 또한, 기존여수로와 보조여수로 연계운영을 위해 3차원 수치해석을 통한 댐하류 안정성 검토 및 확보수위 산정을 통해 단계(관심, 주의, 경계, 심각)별로 대처가 가능한 수위를 산정하였다.

  • PDF

An Efficiency Comparison of Container Terminals in Korea and China by Using Super Efficiency-DEA and Malmquist Productivity Index (Supper Efficiency DEA와 Malmquist 생산성 지수를 활용한 한·중 컨테이너터미널의 효율성 비교)

  • Zheng, Xue-Bin;Kim, Yul-Seong
    • Journal of Korea Port Economic Association
    • /
    • v.32 no.3
    • /
    • pp.1-20
    • /
    • 2016
  • The objective of this study was to select world top 20 major container terminals that belong to Korea and China as comparison units to analyze their efficiency and productivity trend. Super Efficiency Data Envelopment Analysis(SE-DEA) and Malmquist Productivity Index(MPI) models were applied to this study. Compared with previous studies, we narrowed down the scope of the comparison units to terminals and conducted more detailed analysis to present more meaningful implications to the actual operation. The different result from existing studies, SE-DEA analysis implied that the major terminals of Busan New Port showed similar efficiency and productivity with China's terminals. In MPI analysis, the average index of Korean and China's terminals is 1.051 and 1.049. The analysis indicates that the productivity was improved 5.1% and 4.9% annually. From 2012 to 2015, the average terminal TCI index of South Korea and China were 1.032 and 1.0318-the main factor which influences MPI. This means improving productivity mainly rely on investment in new equipment and technology upgrades rather than improve operational efficiency over the past few years. Future management decisions should consider more aggressive marketing to increase the volume and improve operational efficiency to enhance productivity. Further research should apply the overall efficiency of the methodology considering the financial diversification, terminal capacity, service levels, and other factors.

A Study on the Development of Cultural Contents based on the Mural Painting of Afrasiab Palace (아프라시압 궁전벽화를 활용한 문화콘텐츠 개발 방안 연구)

  • Park, Ga Young;Lee, Kyoung Joo;Jung, Dae Yul
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
    • /
    • v.9 no.2
    • /
    • pp.481-491
    • /
    • 2019
  • The wall paintings of the Afrasiab Palace in Samarkand, Uzbekistan, located at the center of the Silk Road where the culture of the East and the West crossed from ancient times to the Middle Ages, have been unearthed in 1960s and attracted attention from academia. In particular, two characters wearing a Korean ancient hat (Jougwan), who were considered to be ancient Korean, were found in the western wall. The wall depicted the Coronation of King Barfuman of Sogdiana Kingdom in 7th century. It is being used as an important feed for studying the international situation and cultural characteristics at that time. This mural, which is now in the Historical Museum of Afrasiab, contain four different paintings at each side, and has its own cultural characteristics and elements. Nevertheless, there has been no development of storytelling and cultural contents using it. The purpose of this study is to find out how to develop and utilize cultural contents and characters based on the paintings of west wall of Afrasiab palace. To this end, we visited the museum and investigated the mural as well as surveyed many academic materials.

A Study on Bigdata Utilization in Cultural and Artistic Contents Production and Distribution (문화예술 콘텐츠 제작 및 유통에서의 빅데이터 활용 연구)

  • Kim, Hyun-Young;Kim, Jae-Woong
    • The Journal of the Korea Contents Association
    • /
    • v.19 no.7
    • /
    • pp.384-392
    • /
    • 2019
  • Big data-related research that deals with the amount of explosive information in the era of the Fourth Industrial Revolution is actively underway. Big data is an essential element that promotes the development of artificial intelligence with a wide range of data that become learning data for machine learning, or deep learning. The use of deep learning and big data in various fields has produced meaningful results. In this paper, we have investigated the use of Big Data in the cultural arts industry, focusing on video contents. Noteworthy is that big data is used not only in the distribution of cultural and artistic contents but also in the production stage. In particular, we first looked at what kind of achievements and changes the Netflix in the US brought to the OTT business, and analyzed the current state of the OTT business in Korea. After that, Netflix analyzed the success stories of 'House of Cards', which was produced / circulated through 'Deep Learning' cinematique, which is a prediction algorithm, through accumulated customer data. After that, FGI (Focus Group Interview) was held for cultural and artistic contents experts. In this way, the future prospects of Big Data in the domestic culture and arts industry are divided into technical aspect, creative aspect, and ethical aspect.

Development of AAB (Algorithm-Aided BIM) Based 3D Design Bases Management System in Nuclear Power Plant (Algorithm-Aided BIM 기반 원전 3차원 설계기준 관리시스템 개발)

  • Shin, Jaeseop
    • Korean Journal of Construction Engineering and Management
    • /
    • v.20 no.2
    • /
    • pp.28-36
    • /
    • 2019
  • The APR1400 (Advanced Power Reactor 1400MW) nuclear power plant is a large-scale national infrastructure facility with a total project cost of 8.6 trillion won and a project period of 10 years or more. The total project area is about 2.17 million square meters and consists of more than 20 buildings and structures. And the total number of drawings required for construction is about 65,000. In order to design such a large facility, it is important to establish a design standard that reflects the design intent and can increase conformity between documents (drawings). To this end, a design bases document (DBD) reflecting the design bases that extracted in regulatory requirements (e.g. 10CFR50, Korean Law, etc.) is created. However, although the design bases are important concepts that are a big framework for the whole design of the nuclear power plant, they are managed in 2-dimensional by the experts in each field fragmentarily. Therefore, in order to improve the usability of building information, we developed BIM(Building Information Model) based 3-dimensional design bases management system. For this purpose, the concept of design bases information layer (DBIL) was introduced. Through the simulation of developed system, design bases attribute and element data extraction for each DBIL was confirmed, and walls, floors, doors, and penetrations with DBIL were successfully extracted.

Review on Discontinuum-based Coupled Hydro-Mechanical Analyses for Modelling a Deep Geological Repository for High-Level Radioactive Waste (고준위방사성폐기물 심층처분장 모델링을 위한 불연속체 기반 수리-역학 복합거동 해석기법 현황 분석)

  • Kwon, Saeha;Kim, Kwang-Il;Lee, Changsoo;Kim, Jin-Seop;Min, Ki-Bok
    • Tunnel and Underground Space
    • /
    • v.31 no.5
    • /
    • pp.309-332
    • /
    • 2021
  • Natural barrier systems surrounding the geological repository for the high-level radioactive waste should guarantee the hydraulic performance for preventing or delaying the leakage of radionuclide. In the case of the behavior of a crystalline rock, the hydraulic performance tends to be decided by the existence of discontinuities, so the coupled hydro-mechanical(HM) processes on the discontinuities should be characterized. The discontinuum modelling can describe the complicated behavior of discontinuities including creation, propagation, deformation and slip, so it is appropriate to model the behavior of a crystalline rock. This paper investigated the coupled HM processes in discontinuum modelling such as UDEC, 3DEC, PFC, DDA, FRACOD and TOUGH-UDEC. Block-based discontinuum methods tend to describe the HM processes based on the fluid flow through the discontinuities, and some methods are combined with another numerical tool specialized in hydraulic analysis. Particle-based discontinuum modelling describes the overall HM processes based on the fluid flow among the particles. The discontinuum methods that are currently available have limitations: exclusive simulations for two-dimension, low hydraulic simulation efficiency, fracture-dominated fluid flow and simplified hydraulic analysis, so it could be improper to the modelling the geological repository. Based on the concepts of various discontinuum modelling compiled in this paper, the advanced numerical tools for describing the accurate coupled HM processes of the deep geological repository should be developed.

Development of an open source-based APT attack prevention Chrome extension (오픈소스 기반 APT 공격 예방 Chrome extension 개발)

  • Kim, Heeeun;Shon, Taeshik;Kim, Duwon;Han, Gwangseok;Seong, JiHoon
    • Journal of Platform Technology
    • /
    • v.9 no.3
    • /
    • pp.3-17
    • /
    • 2021
  • Advanced persistent threat (APT) attacks are attacks aimed at a particular entity as a set of latent and persistent computer hacking processes. These APT attacks are usually carried out through various methods, including spam mail and disguised banner advertising. The same name is also used for files, since most of them are distributed via spam mail disguised as invoices, shipment documents, and purchase orders. In addition, such Infostealer attacks were the most frequently discovered malicious code in the first week of February 2021. CDR is a 'Content Disarm & Reconstruction' technology that can prevent the risk of malware infection by removing potential security threats from files and recombining them into safe files. Gartner, a global IT advisory organization, recommends CDR as a solution to attacks in the form of attachments. There is a program using CDR techniques released as open source is called 'Dangerzone'. The program supports the extension of most document files, but does not support the extension of HWP files that are widely used in Korea. In addition, Gmail blocks malicious URLs first, but it does not block malicious URLs in mail systems such as Naver and Daum, so malicious URLs can be easily distributed. Based on this problem, we developed a 'Dangerzone' program that supports the HWP extension to prevent APT attacks, and a Chrome extension that performs URL checking in Naver and Daum mail and blocking banner ads.

Study on the Advanced S-band Telecommand and Telemetry Formats for the Geostationary Orbit Satellites Operation (정지궤도위성 운영을 위한 향상된 S-band 원격명령어 및 원격측정데이터 포맷에 대한 연구)

  • Lee, Nayoung;Shin, Hyun-Kyu;Cheon, Yee-Jin;Choi, Jae-Dong
    • Journal of the Korean Society for Aeronautical & Space Sciences
    • /
    • v.49 no.5
    • /
    • pp.417-424
    • /
    • 2021
  • The S-band telemetry and telecommand formats for geostationary orbit satellites should have sufficient reliability, since they transmit massive satellite health data and receive the mission commands in the 36,000km of the geostationary orbit. Also, they have to efficiently manage the large quantity of satellite health data under the limited data transmission rate. Cheollian-2A and 2B satellites were developed by Korea Aerospace Research Institute and launched at 2018 and 2020, respectively. Their missions are to conduct continuously the mission of Cheollian-1, which was the first geostationary orbit satellite of Korea. Therefore, the fundamental S-band data format design for Cheollian-2A and 2B should meet the requirements of Cheollian-1. Meanwhile the latest remote data processing techniques for these newest geostationary orbit satellites should be implemented. In this paper, the advanced S-band space data formats and management methods are proposed for more efficient data transmission, reception and operation with the limited data rate of the geostationary orbit satellites. The implemented results in the flight software of Cheollian-2A and 2B are described in detail.