• Title/Summary/Keyword: combined systems

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Conservation Area Designation Method for Natural Environmental Management in a Rural Local Government (자치단체지역의 자연환경관리를 위한 보전지역 설정)

  • Lee, Gwan-Gyu;Sung, Hyun-Chan;Choi, Jaeyong
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.10 no.5
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    • pp.1-9
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    • 2007
  • Local government with abundant natural resources should consider the nature conservation oriented planning process for the sustainable development. With this regard, the aim of this study is to provide a substantial methodology to support the decision-making process to designate the conservation areas. The objectives of the proposed methodology is to conserve natural resources in the local government's territory through quantitatively assessing the values of the natural resources based on various ecological factors such as topography, flora and fauna. In order to test the usability of the method, Gangneung City in Kangwon-Do is selected considering the latest data availability. Based on the assessment process land use of the subjected city could be categorized into 4 levels of conservative area, conservative level 1 area, conservative level 2 area, and conservative level 3 area. Among them, conservative area and conservative level 1 area could be combined as natural resources conservation area and the others could be regarded as buffer and transitional area. Especially conservation area is surrounded by conservation level 2 area. Conclusively, the GIS methods adopted in this could be the efficient illustrative tool to assess the local natural resource values with the central government established nature-environmental information systems.

A Discussion on the National Land Planning and Use Act from the Rural Planning of View (농촌계획 관점에서 본 국토계획법의 개선방안)

  • Hwang, Han-Cheol
    • Journal of Korean Society of Rural Planning
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    • v.10 no.2 s.23
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    • pp.51-60
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    • 2004
  • Through the fast economic growth since the 1960s, Korea has experienced various problems on land such as urban sprawl, the rapid increase in land prices, land speculation, privatization of the betterment, and so on. To prevent such problems and to enhance harmonious development and conservation, the National Land Planning and Use Act(NLPUA) was established in 2003. The NLPUA which was revised and combined two existing planning laws i.e. the National Land Use Management Act and Urban Planning Act, has an eye to preventing disorderly spatial development, to pursuing environmentally friendly spatial planning, and to following up planned development in non-urbanized area like rural area. This study aims to discuss what should be considered the pending issues after the application of the NLPUA in rural area. On the basis of reviewing the NLPUA in a viewpoint of the rural planning, this study suggests some improvement policy such as considering various rural conditions, securing excellent agricultural land, applying the District Plan II system effectively, reorganizing the planning administrative, and so on.

Vehicle Interior Noise Analysis Using Frequency Response Function Based Substructural Method (주파수응답함수의 부분구조합성 법을 이용한 차 실내소음 예측)

  • 허덕재;박태원
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.11 no.4
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    • pp.5-12
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    • 2001
  • This paper presents the simulation methodology of the interior noise of vehicle using the frequency response function based hybrid modeling of the system which consists of multi-subsystem models obtained by the test or analysis. The complex systems such as a trimmed body of high modal density and a powertrain were modeled by using experimental data, and a sub-frame of a vehicle of low modal density was modeled by finite element data. Modeling of the whole system was executed and validated in the two stages. The first stave is combining the trimmed body and the sub-frame, and the second stage is attaching the powertrain, which is a exciting source, to the combined model of the first stage. The input force to the system was modeled as an equivalent force in the virtual space, which was obtained from impedance method using the FRFs of the powertrain and the responses. The interior noise predicted by the proposed method was very close to the direct measurement, which showed feasibility of the proposed modeling procedure. Since the methodology is easily applied to both the transfer path analysis of structure-borne noise and the analysis of noise contribution of a sub-system, it is expected to be a strong tool for design change of a vehicle in the earlier stare.

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YBCO - film production by thermal co-evaporation for microwave and electrical power applications

  • Prusseit, W.;Semerad, R.
    • 한국초전도학회:학술대회논문집
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    • v.10
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    • pp.145-145
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    • 2000
  • Large area YBCO - films are series produced by thermal co-evaporation using a deposition scheme known as Garching process, which allows intermittent oxygen supply in a high vacuum ambient by an oxygen cup spaced closely underneath the moving substrates. The deposition area of 9" diameter is capable to handle very large wafers up to 8" diam. or numerous smaller wafers. The large distance between substrates and boat sources and an elaborate heater design guarantee excellent film uniformity over the entire deposition area. YBCO - films deposited by this technique are commercially fabricated for a variety of applications - the most prominent are resistive fault current limiters and microwave filters for mobile or satellite communications. IMUX and OMUX - filters are currently space qualined by Robert Bosch GmbH and are expected to be launched and installed on an experimental platform of the international space station ALPHA in 2001. Both of the above applications require quite different film specifications on the one hand, but at the same time extremely high uniformity and reproducibility on the other hand, since hundreds of YBCO - films are combined to large systems or have to be approved for manned space missions. The success of such projects is direct evidence that the technique of thermal evaporation is readily capable to meet these high demands and has become the major deposition technique to support the emerging HTS market.

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Outlier detection of main engine data of a ship using ensemble method (앙상블 기법을 이용한 선박 메인엔진 빅데이터의 이상치 탐지)

  • KIM, Dong-Hyun;LEE, Ji-Hwan;LEE, Sang-Bong;JUNG, Bong-Kyu
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.56 no.4
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    • pp.384-394
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    • 2020
  • This paper proposes an outlier detection model based on machine learning that can diagnose the presence or absence of major engine parts through unsupervised learning analysis of main engine big data of a ship. Engine big data of the ship was collected for more than seven months, and expert knowledge and correlation analysis were performed to select features that are closely related to the operation of the main engine. For unsupervised learning analysis, ensemble model wherein many predictive models are strategically combined to increase the model performance, is used for anomaly detection. As a result, the proposed model successfully detected the anomalous engine status from the normal status. To validate our approach, clustering analysis was conducted to find out the different patterns of anomalies the anomalous point. By examining distribution of each cluster, we could successfully find the patterns of anomalies.

Effects of High Pressure and Sodium Nitrite Levels on Cured Color Development and Residual Nitrite Concentration in Pork Homogenates

  • Hong, Geun-Pyo;Kim, Ji-Sook;Chun, Ji-Yeon;Min, Sang-Gi
    • Food Science of Animal Resources
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    • v.31 no.5
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    • pp.641-648
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    • 2011
  • This study investigated the effects of high pressure with or without thermal treatment on the cured color development and residual nitrite contents of model meat systems (pork, NaCl and sodium nitrite). At low nitrite levels (${\leq}50{\mu}g/g$), 200 MPa of pressure alone (P) did not develop the cured meat color (p>0.05). Thermal treatment (T) showed curing pigmentation (higher CIE L* and CIE a*), and the impacts were more effective when pressure was combined with thermal treatment (PT). In contrast, nitrite levels did not contribute to the cured meat color when ${\geq}200{\mu}g/g$ of nitrite was added to the meat. At high nitrite levels, although the typical cured color that is induced by thermal treatment did not present by pressure alone, the PT treatment still showed a pinker color with low residual nitrite content compared to the T treatment. The higher the pressure level (300 MPa), the greater the cured meat pigmentation with lower residual nitrite. Therefore, the present study demonstrates the possible application of high pressure, both for cured pigmentation and reducing residual nitrite, respective to typical thermal treatments.

A Study on The Architectural Plan Access Method for The Integrated Design of The Environmentally Friendly Architecture (친환경 건축의 통합설계를 위한 건축 계획적 접근방법에 관한 연구)

  • Cho, Sung-Hyun;Kim, Chul-Kyu
    • Journal of The Korean Digital Architecture Interior Association
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    • v.10 no.3
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    • pp.79-86
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    • 2010
  • From the research which sees the building which uses a natural control method with ecological architecture, continuity tried to divide the building which uses a physical control method with sustainable architecture. Ecological architecture analyzes the microclimate of the area and applies mining and natural ventilation leads and that the interior environment controls, the condition of the site actively and there is a possibility of seeing. Also sustainable architecture which is possible to lead and recycling and reuse of the resources and energy cyclic process of the construction resources to lead and the interior environment to control. Therefore the case where the facility system and structural system become integrated design organically in natural circulating method is many. Specially the sunshade system and double skin system are combined and structural system of the building and there is a possibility of having the envelope which form is feature. Today the buildings lead and the system integration process where the integral parts are systematic is demanded the interior environment which and an external form and that, they make they are there is a possibility of seeing. the environmental building which hits joins in with natural control method and the structure and facility system are integrated and has the tendency which is developed and there is a possibility of saying that a meaning with the alternative construction will be able to reduce the resources and an energy.

Korea's Capital Market Promotion Policies: IPOs and Other Supplementary Policy Experiences

  • KIM, WOOCHAN
    • KDI Journal of Economic Policy
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    • v.37 no.2
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    • pp.64-97
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    • 2015
  • This paper studies a series of capital market promotion policies Korea pursued over a 30-year period during its development era (1960s - 1980s). The purpose of this paper is twofold. The first purpose is to understand the policy approaches Korea took, and the second is to extract lessons that can benefit policymakers in the developing world, where capital market promotion is an important policy goal. There are two key features of Korea's capital market promotion policies. First, the government was actively involved, sometimes indirectly by giving tax incentives to encourage IPOs. However, in other times, it was directly involved by giving IPO orders and threatening those that did not comply. No stock exchange in a developed country has ever experienced such government involvement. Combined with rapid economic growth, this interventionist approached allowed the Korean stock market to experience phenomenal growth over a short period of time. Second, the capital market promotion policies had multiple objectives. One was to mobilize domestic capital for economic development. Another was to lower firms' debt-to-equity ratios. Most interestingly, however, the Korean government wanted to popularize stock ownership, thereby allowing ordinary Koreans to share in the fruits of economic growth.

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A Micro-Webpage Stored in NFC Tag (NFC태그에 저장 가능한 마이크로 웹페이지)

  • Choi, BokDong;Eun, SeongBae
    • IEMEK Journal of Embedded Systems and Applications
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    • v.7 no.1
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    • pp.1-7
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    • 2012
  • A Smartphone has an ability accessing Internet by URL stored in NFC(Near Field Communication) Tag for storing the information of items, blogs and web pages. Because the system works through the Internet with URL, however, it needs to pay some costs like communication fee and time. If we can store the web page on the tags, we can save the communication overhead. But they have too small memory to store it. In this paper, we introduce the Micro-Webpage technology which can be stored in NFC tag or QR(Quick Response) code. To make a Micro-Webpage, we remove control tags from the web page to leave a user original content. The removed control tags are stored in our smartphone application as a template. The user content is also compressed to a smaller one by an lossless compression algorithm. When a tag is read, the stored content is decompressed and, it is combined with the template to make the original web page. We have implemented a prototype of Micro-Webpage system on Android platform and confirmed that the prototype has reasonable performance improvements in saving memory and loading web page time.

An Implementation of SoC FPGA-based Real-time Object Recognition and Tracking System (SoC FPGA 기반 실시간 객체 인식 및 추적 시스템 구현)

  • Kim, Dong-Jin;Ju, Yeon-Jeong;Park, Young-Seak
    • IEMEK Journal of Embedded Systems and Applications
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    • v.10 no.6
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    • pp.363-372
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    • 2015
  • Recent some SoC FPGA Releases that integrate ARM processor and FPGA fabric show better performance compared to the ASIC SoC used in typical embedded image processing system. In this study, using the above advantages, we implement a SoC FPGA-based Real-Time Object Recognition and Tracking System. In our system, the video input and output, image preprocessing process, and background subtraction processing were implemented in FPGA logics. And the object recognition and tracking processes were implemented in ARM processor-based programs. Our system provides the processing performance of 5.3 fps for the SVGA video input. This is about 79 times faster processing power than software approach based on the Nios II Soft-core processor, and about 4 times faster than approach based the HPS processor. Consequently, if the object recognition and tracking system takes a design structure combined with the FPGA logic and HPS processor-based processes of recent SoC FPGA Releases, then the real-time processing is possible because the processing speed is improved than the system that be handled only by the software approach.