• Title/Summary/Keyword: GREEN NETWORK

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Analysis of Application Message Protocol for Control Network in Green Power Systems (차세대 그린 에너지 발전 시설을 위한 응용 메시지 프로토콜의 분석 및 응용)

  • Kwon, Ki-Hyup;Kim, Dong-Sung
    • Journal of Institute of Control, Robotics and Systems
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    • v.15 no.12
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    • pp.1209-1215
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    • 2009
  • This paper discusses a common message protocol for green power systems such as tidal, wind, photovoltaic, and solar systems. For this investigations and analysis, existing protocols such as ELCOM-90, TASE.1, ICCP/TASE.2 and SCADA were analyzed for the application of green power systems in view of real-time property and reliability. For the analysis, the practical example of green power system using SACADA and ICCP are investigated and discussed. As a future direction of this investigations, the feasibility analysis of manufacturing message specification(ISO-9560) for green power system is discussed.

A Study on Activation of Green Tourism - with an Emphasis on Boseong County - (그린 투어리즘 활성화 방안에 관한 연구 -보성군 지역을 중심으로-)

  • Song, Kyung-Hwan
    • Korean Journal of Organic Agriculture
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    • v.15 no.2
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    • pp.171-183
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    • 2007
  • Green tourism is a stay-flow activity between people in urban and rural area, using a natural view, tradition, and life in agricultural area. And green tourism provides rest, recreation, and new experience fur people living in urban area as well as opportunities to increase income for people in rural area. In recently, amenity is rapidly rising as a main factor fur a regional competitiveness. Boseong county shows a typical agriculture industrial structure with a weak independent base, but has a beautiful tea fields in full seasons. Boseong county is making an effort to activate the regional economy, but the result fall short of one's expectation. Several methods to activate the green tourism of Boseong county are as follows: i) introduction of specialized theme relating Boseong green tea; ii) provision of information regarding tourist resort and development of experience-program related to green tea business; iii) establishment of a sales network of products through accommodations in private houses; iv) establishment of networks among regions to achieve systematic sales of tourist experience, accommodations in private houses, and local speciality simultaneously.

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Characteristics of Wildbirds Habitat of Artificial Green Corridor in Gangseo-gu, Seoul (서울시 강서구 조성녹지축의 야생조류 서식처 특성 연구)

  • Choi, Jin-Woo;Lee, Kyong-Jae
    • Journal of Environmental Science International
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    • v.19 no.1
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    • pp.47-59
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    • 2010
  • This study was to examine the characteristics of wirdbirds habitat for improvement plan in green corridor. The target site, Gangseo-gu artificial green corridor was set up with the structure in which small scale of core green space with Goongsan and Yeomchang neighborhood parks in urbanized city was connected with the artificial green space with Gongamnaru, Hwanggeumnae neighborhood parks with 28~42.5 m in width. Wild birds six~eleven species; Dendrocopos spp, Paradoxornis webbiana, Parus major, Phasianus colchicus, etc. were observed in core green, but wild birds of two~five species: Columba livuia, Passer montanus, Pica pica, Hypsipetes amaurotis, etc. were observed in artificial green space. Thus wild birds of artificial and generalist species only moved in artificial green space. The artificial green space where vegetation structure was consisted of single-layer with poorness chose target species laying stress on generalist species and edge species of Parus major, P. palustris, Paradoxornis webbiana etc. for short-term and interior species of Dendrocopos major, Picus canus, etc. for long-term. The result suggested enhancement methods for target species's habitat in green corridor: to secure at least a corridor 30 meters in artificial corridor, to secure ecological pond, to offer the various shelterer and environment of prey-resources through the multi-layer structure.

The Research about Map Model of 3D Road Network for Low-carbon Freight Transportation (저탄소 화물운송체계 구현을 위한 3차원 도로망도 모델에 관한 연구)

  • Lee, Sang-Hoon
    • Spatial Information Research
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    • v.20 no.4
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    • pp.29-36
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    • 2012
  • The low-carbon freight transportation system was introduced due to increase traffic congestion cost and carbon-dioxide for global climate change according to expanding city logistics demands. It is necessary to create 3D-based road network map for representing realistic road geometry with consideration of fuel consumption and carbon emissions. This study propose that 3D road network model expressed to realistic topography and road structure within trunk road for intercity freight through overlaying 2D-based transport-related thematic map and 1m-resolution DEM. The 3D-based road network map for the experimental road sections(Pyeongtaek harbor-Uiwang IC) was verified by GPS/INS survey and fuel consumption simulation. The results corresponded to effectively reflect realistic road geometry (RMSE=0.87m) except some complex structure such as overpass, and also actual fuel consumption. We expect that Green-based freight route planning and navigation system reflected on 3D geometry of complex road structure will be developed for effectively resolving energy and environmental problems.

Transition Decision Algorithm for Energy Saving in OBS Network with LPI (저전력 대기를 사용하는 OBS 망에서 에너지 절감을 위한 상태 천이 결정 알고리즘)

  • Kang, Dong-Ki;Yang, Won-Hyuk;Lee, Ki-Beom;Kim, Young-Chon
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.37 no.5B
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    • pp.317-326
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    • 2012
  • Recently, many researchers have studied to solve the energy consumption of network equipments since the interest of Green IT has been increased. In this paper, we apply Low Power Idle (LPI) to OBS network to reduce energy consumption of network devices. Many previous researches have focused on maximizing the sleep time of network equipments to increase the energy saving efficiency of LPI. But transition overhead caused by LPI might not only depreciate the performance of energy saving but also increase packet delay. In this paper, Transition Decision (TD) algorithm is proposed to improve energy saving efficiency by reducing the number of unnecessary transition and guarantee the required QoS such as packet delay. To evaluate the performance of proposed algorithm, we model OBS edge router with LPI by OPNET and analyze the performance of the proposed algorithm in views of energy saving, transition count and average packet delay.

Development of an Integrated Forecasting and Warning System for Abrupt Natural Disaster using rainfall prediction data and Ubiquitous Sensor Network(USN) (농촌지역 돌발재해 피해 경감을 위한 USN기반 통합예경보시스템 (ANSIM)의 개발)

  • Bae, Seung-Jong;Bae, Won-Gil;Bae, Yeon-Joung;Kim, Seong-Pil;Kim, Soo-Jin;Seo, Il-Hwan;Seo, Seung-Won
    • Journal of Korean Society of Rural Planning
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    • v.21 no.3
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    • pp.171-179
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    • 2015
  • The objectives of this research have been focussed on 1) developing prediction techniques for the flash flood and landslide based on rainfall prediction data in agricultural area and 2) developing an integrated forecasting system for the abrupt disasters using USN based real-time disaster sensing techniques. This study contains following steps to achieve the objective; 1) selecting rainfall prediction data, 2) constructing prediction techniques for flash flood and landslide, 3) developing USN and communication network protocol for detecting the abrupt disaster suitable for rural area, & 4) developing mobile application and SMS based early warning service system for local resident and tourist. Local prediction model (LDAPS, UM1.5km) supported by Korean meteorological administration was used for the rainfall prediction by considering spatial and temporal resolution. NRCS TR-20 and infinite slope stability analysis model were used to predict flash flood and landslide. There are limitations in terms of communication distance and cost using Zigbee and CDMA which have been used for existing disaster sensors. Rural suitable sensor-network module for water level and tilting gauge and gateway based on proprietary RF network were developed by consideration of low-cost, low-power, and long-distance for communication suitable for rural condition. SMS & mobile application forecasting & alarming system for local resident and tourist was set up for minimizing damage on the critical regions for abrupt disaster. The developed H/W & S/W for integrated abrupt disaster forecasting & alarming system was verified by field application.

A study of energy consumption and savings potential in wired network equipment (유선 네트워크 장비의 에너지 소모량과 절약 잠재성 연구)

  • Kim, Ki-Young;Suh, Yu-Hwa
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.12
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    • pp.6469-6477
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    • 2013
  • As the Internet has grown, energy consumption and GHG emission from internet use have become issues in recent years. On the other hand, such interest in greening the Internet has focused on edge devices, and there is a lack of deeper related studies of the energy wasted by excessive network-connectivity and the savings potential in wired network equipment. This study presents the background and reasonability of studies on the energy efficiency of wired networks in terms of the environment, economy and energy resources. The energy consumption and savings potential of network equipment were also estimated and the major factors of energy consumption was analyzed based on the data, and future studies for the Internet are presented.

Measuring the efficiency of technology innovation of the Global Green Car Companies by ANP/DEA Model (특허지표를 고려한 글로벌 자동차 기업의 그린 카 기술혁신 효율성 평가를 위한 ANP/DEA 통합모형)

  • Kim, HyunWoo;Kim, Jaehee;Kim, Sheung-Kown
    • Journal of Technology Innovation
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    • v.20 no.3
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    • pp.255-285
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    • 2012
  • As the environmental performance is getting important in global automotive industry sector, there is a need to build the intellectual capacity. Hence it is important to measure the performance of the green car patent development of global automotive companies. To do this, we propose to use Data Envelopment Analysis(DEA) Model with Analytic Network Process(ANP), which generates weight coefficients of inputs and outputs for DEA-AR(Assurance Region) model. We considered three inputs: corporate asset, R&D expenditures, number of employees, and three outputs: patent counts, patent citations and patent claims. The results showed that our model could measure the potential of green car technology, and we could see the trend of the green car industry sector.

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A Green LED Sensitivity Lighting System Using Smart Phone (스마트폰을 이용한 그린 LED 감성조명 시스템)

  • Cho, Myeon-Gyun
    • IEMEK Journal of Embedded Systems and Applications
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    • v.7 no.2
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    • pp.103-111
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    • 2012
  • This paper introduces a novel concept of 'A Green LED Sensitivity Lighting System' which can automatically estimate QoS(quality of service) and emotional requirements of user using smart phone. And it can intelligently control ambient illumination lamp to conserve electric energy and to satisfy human sensitivity. The proposed system has 4 control modes; emotional lighting, smart lighting, green lighting and realistic lighting modes in order to comfort man's emotion, to maximize work efficiency, to save energy consumption and to make the entertainment more fun, respectively. When we choose green lighting mode for indoor office situations, an elaborate simulation shows that the proposed system with home network can reduce the energy by 50% compared to conventional light control system with a fixed time-based switching.