• Title/Summary/Keyword: Global Environment

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Design of Global Buffer Manager in SAN-based Cluster File Systems (SAN 환경의 대용량 클러스터 파일 시스템을 위한 광역 버퍼 관리기의 설계)

  • Lee, Kyu-Woong
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.11
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    • pp.2404-2410
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    • 2011
  • This paper describes the design overview of cluster file system $SANique^{TM}$ based on SAN(Storage Area Network) environment. The design issues and problems of the conventional global buffer manager are also illustrated under a large set of clustered computing hosts. We propose the efficient global buffer management method that provides the more scalability and availability. In our proposed global buffer management method, we reuse the maintained list of lock information from our cluster lock manager. The global buffer manger can easily find and determine the location of requested data block cache based on that lock information. We present the pseudo code of the global buffer manager and illustration of global cache operation in cluster environment.

An Analysis on the Ancillary Benefit of Greenhouse Gases Reduction in Korea

  • Yanghoon Song;Han, Wha-Jin
    • Journal of Korean Society for Atmospheric Environment
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    • v.19 no.E1
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    • pp.41-50
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    • 2003
  • Greenhouse gases (GHG) could lead to global warming, which may bring about various disturbances to global ecosystem. Other than primary benefits that are too extensive, the ancillary benefit from GHG reduction has been estimated to provide justification for national actions. Five scenarios for 5 to 40% reduction of GHG were evaluated for the benefit/cost efficiency, using the cost estimates from a previous study. Their benefits were also estimated using a European model. As a result of this study, it can be concluded that lower reduction scenarios (5∼10%) seem to be more efficient than higher reduction scenarios (30∼40%).

The effects of ICT infrastructure and investment environment on innovation : Focused on Global Innovation Index (ICT 인프라와 투자 환경이 혁신에 미치는 영향 : 세계혁신지수를 중심으로)

  • Choi, Jin-Yong;Kim, Sang-Yoo
    • The Journal of Information Systems
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    • v.29 no.3
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    • pp.159-178
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    • 2020
  • Purpose The purpose of this study is to demonstrate the relationship between ICT(Information & communication technology) infrastructure, investment environment, and innovation performance from a national perspective. Design/methodology/approach We derived 5 hypotheses based on the literature review. To measure each concept, We converted the scores of each country provided by the Global Innovation Index into a 7 Likert scale and performed a regression analysis. Findings According to the empirical analysis result, this study confirmed that knowledge and technology output mediated the relationship between ICT infrastructure and creative goods and services. In addition, this study confirmed that the investment environment has a moderating effect between ICT infrastructure and knowledge and technology output.

The Importance of Human Resource Management in New International Logistics Environment (신 국제물류환경과 인적관리의 중요성)

  • 김진환
    • Journal of Korea Port Economic Association
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    • v.17 no.1
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    • pp.113-128
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    • 2001
  • The modem world has brought a wave of changes, not the least of which is globalization or what is often referred to as the "borderless society." In recent times, changes in the global business environment, such as trade deregulation and advances in technology, are challenging us to find new ways of thinking about and coping with these new forces. The field of global logistics has encountered a host of paradigm shifts as well. Therefore, it is critical that managers involved in international logistics take into account perceptional swift or at least understand the value of fully utilizing information. The appropriate management of human resources is a key factor in dealing with not only new information technology, but also shifts in the business environment. In particular, it will be important for Korea's logistics managers at international logistics companies to continually work to develop themselves, as they must carry out a critical role in global supply chain management. If they fail to take heed of the demand's of the new environment, the competitiveness of Korean enterprises in international logistics will suffer severely.

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Analysis of Global Dimming Appearances Using the Solar Radiation Measurement in Korean Major Cities (태양복사 측정에 의한 주요 도시의 Global Dimming 현상분석)

  • Jo, Dok-Ki;Kang, Young-Heack
    • 한국신재생에너지학회:학술대회논문집
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    • 2008.05a
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    • pp.146-149
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    • 2008
  • Since the atmospheric clearness index is main factor for evaluating global-dimming of atmosphere environment, it is necessary to estimate its characteristics all over the major cities in Korea. We have begun collecting clearness index data since 1982 at 16 different cities and considerable effort has been made for constructing a standard value from measured data at each city. The new clearness data for global-dimming analysis will be extensively used by evaluating atmospheric environment as well as by solar PV application system designer or users. From the results, we can conclude that 1) Yearly mean 61.9 % of the atmospheric clearness index was evaluated for clear day all over 2) A significant difference of atmospheric clearness index is observed between 1982-1989 and1990-1997, 1998-2005 through 16 different cities in Korea.

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Annual Variation of $CO_2$ and CH$_4$ Concentration in the Background Area of the Korean Peninsula

  • Park, Jae-Cheon;Park, Byoung-Cheol;Park, Ki-Jun;Chung, Hyo-Sang
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.11a
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    • pp.512-513
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    • 2003
  • Human activities have become a major factor that significantly changes the global environment. Mankind has increasingly used land, water, minerals and other natural resources since the beginning of industrialization, and future growth in the population and economy is thought to further enhance the impact upon the Earth. The global climate, biogeochemical process and natural ecosystems are closely linked with one another, and changes in any one of these systems may effect the others, which could result in consequences detrimental to humans and other living organisms on the Earth.(omitted)

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Object Recognition-based Global Localization for Mobile Robots (이동로봇의 물체인식 기반 전역적 자기위치 추정)

  • Park, Soon-Yyong;Park, Mignon;Park, Sung-Kee
    • The Journal of Korea Robotics Society
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    • v.3 no.1
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    • pp.33-41
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    • 2008
  • Based on object recognition technology, we present a new global localization method for robot navigation. For doing this, we model any indoor environment using the following visual cues with a stereo camera; view-based image features for object recognition and those 3D positions for object pose estimation. Also, we use the depth information at the horizontal centerline in image where optical axis passes through, which is similar to the data of the 2D laser range finder. Therefore, we can build a hybrid local node for a topological map that is composed of an indoor environment metric map and an object location map. Based on such modeling, we suggest a coarse-to-fine strategy for estimating the global localization of a mobile robot. The coarse pose is obtained by means of object recognition and SVD based least-squares fitting, and then its refined pose is estimated with a particle filtering algorithm. With real experiments, we show that the proposed method can be an effective vision- based global localization algorithm.

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A Study on the Analysis of Global Dimming Appearances Using the Solar Radiation Measurement in Korean Major Cities (Focused on Atmospheric Clearness Analysis) (태양광에너지 측정을 통한 우리나라 주요 도시의 Global Dimming 현상 분석에 관한 연구 (대기의 청명도 분석을 중심으로))

  • Jo, Dok-Ki;Kang, Young-Heack
    • Journal of the Korean Solar Energy Society
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    • v.27 no.2
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    • pp.45-52
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    • 2007
  • Since the atmospheric clearness index is main factor for evaluating global-dimming of atmosphere environment, it is necessary to estimate its characteristics all over the major cities in Korea. We have begun collecting clearness index data since 1982 at 16 different cities and considerable effort has been made for constructing a standard value from measured data at each city. The new clearness data for global-dimming analysis will be extensively used by evaluating atmospheric environment as well as by solar PV application system designer or users. From the results, we can conclude that 1) Yearly mean 61.9% of the atmospheric clearness index was evaluated for clear day all over 2) A significant difference of atmospheric clearness index is observed between 1982-1989 and 1990-1997, 1998-2005 through 16 different cities in Korea.

A review on global market environment and regulatory issues of flavors (세계 식품 향료시장의 환경과 법적규제)

  • Oh, Jae Soon
    • Food Science and Industry
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    • v.50 no.4
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    • pp.2-11
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    • 2017
  • The external factors of global flavor market include the world economy, population growth, urbanization, consumer spending, raw material availability, pricing, and regulatory issues. And the internal factors as product pricing and technology development may lie the flavor house's competitiveness and cost considerations. In developing countries, rising preference for packaged food and beverages and increasing personal expenditures will drive demand for flavor market. Increasing consumer demand for natural products, driven in part by health concerns and a desire for transparency in labeling will impact the demand. The increasing demand for salt and sugar reduction will boost demand for flavors to maintain the overall taste. The use of quality and innovative flavors in the beverages and the multifunctional flavors has a positive influence on the global market. The global flavor industry has the presence of several drivers and positive trends, with its future expected to be promising.