• Title/Summary/Keyword: large scale development

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Status of the technology development of large scale HTS generators for wind turbine

  • Le, T.D.;Kim, J.H.;Kim, D.J.;Boo, C.J.;Kim, H.M.
    • Progress in Superconductivity and Cryogenics
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    • v.17 no.2
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    • pp.18-24
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    • 2015
  • Large wind turbine generators with high temperature superconductors (HTS) are in incessant development because of their advantages such as weight and volume reduction and the increased efficiency compared with conventional technologies. In addition, nowadays the wind turbine market is growing in a function of time, increasing the capacity and energy production of the wind farms installed and increasing the electrical power for the electrical generators installed. As a consequence, it is raising the wind power energy contribution for the global electricity demand. In this study, a forecast of wind energy development will be firstly emphasized, then it continue presenting a recent status of the technology development of large scale HTSG for wind power followed by an explanation of HTS wire trend, cryogenics cooling systems concept, HTS magnets field coil stability and other technological parts for optimization of HTS generator design - operating temperature, design topology, field coil shape and level cost of energy, as well. Finally, the most relevant projects and designs of HTS generators specifically for offshore wind power systems are also mentioned in this study.

Evaluating Perceived Smartness of Product from Consumer's Point of View: The Concept and Measurement

  • Lee, Won-Jun
    • The Journal of Asian Finance, Economics and Business
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    • v.6 no.1
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    • pp.149-158
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    • 2019
  • Due to the rapid development of IT (information technology) and internet, products become smart and able to collect, process and produce information and can think of themselves to provide better service to consumers. However, research on the characteristics of smart product is still sparse. In this paper, we report the systemic development of a scale to measure the perceived product smartness associated with smart product. To develop product smartness scale, this study follows systemic scale development processes of item generation, item reduction, scale validation, reliability and validity test consequently. And, after acquiring a large amount of qualitative interview data asking the definition of smart product, we add a unique process to reduce the initial items using both a text mining method using 'r' s/w and traditional reliability and validity tests including factor analysis. Based on an initial qualitative inquiry and subsequent quantitative survey, an eight-factor scale of product smartness is developed. The eight factors are multi-functionality, human-like touch, ability to cooperate, autonomy, situatedness, network connectivity, integrity, and learning capability consequently. Results from Korean samples support the proposed measures of product smartness in terms of reliability, validity, and dimensionality. Implications and directions for further study are discussed. The developed scale offers important theoretical and pragmatic implications for researchers and practitioners.

Process Development for Large Scale Synthesis of TRH (TRH의 대량합성 제조법 개발)

  • Kim, Dong-Hyeon;Thapa, Pritam;Karki, Radha;Jahng, Yurng-Dong;Lee, Eung-Seok
    • YAKHAK HOEJI
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    • v.51 no.6
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    • pp.490-494
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    • 2007
  • TRH (thyrotropin-releasing hormone) was chemically synthesized utilizing solution phase peptide chemistry for the process development of large scaled synthesis. All the synthetic steps performed in relatively mild conditions, higher yields, easier preparations, minimum racemizations, and separation and purification by recrystallizations.

Private sector engagement in large scale solar power deployment in Sri Lanka: Role of green climate fund

  • Liyanage, Namal
    • Bulletin of the Korea Photovoltaic Society
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    • v.6 no.1
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    • pp.21-34
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    • 2020
  • Sri Lanka has strongly understood the importance of mitigation of climate change and various measures have been taken. To tackle the climate change, after ratifying Paris Agreement, Sri Lanka has pledged to reduce her greenhouse gas emission in the energy sector by 20% (16% unconditional and 4% conditional) by 2030 based on the BAU scenario. Simultaneously, the government introduced its new energy policy and strategies in 2019 with a vision of achieving carbon neutrality by 2050. This paper survey related key government documents, policies, reports, and academic articles to investigate opportunities for the private sector to invest large scale solar power deployment (10 MW or above) and to get support from climate finance under article 6 of the Paris Agreement. It has found, growing concern on the environment, energy security issues and increase import expenses for fossil fuels are the main influencing factors to move renewable sources. Further, government investment and FDI both have gradually decreased in the energy sector. Therefore, an alternative financing mechanism is needed. Although the private sector allowed investing in the energy sector since 1996 with the introduction of IPP (Independent Power Producers), it could not make considerable progress on involving large scale solar utility projects. This has revealed government policy is not aligning with the long term generation plan of the electricity sector. The study has also found, it needs more strategic road map, coordination with different institutions, monitoring system to enhance large scale solar contribution.

COVID-19 recommender system based on an annotated multilingual corpus

  • Barros, Marcia;Ruas, Pedro;Sousa, Diana;Bangash, Ali Haider;Couto, Francisco M.
    • Genomics & Informatics
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    • v.19 no.3
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    • pp.24.1-24.7
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    • 2021
  • Tracking the most recent advances in Coronavirus disease 2019 (COVID-19)-related research is essential, given the disease's novelty and its impact on society. However, with the publication pace speeding up, researchers and clinicians require automatic approaches to keep up with the incoming information regarding this disease. A solution to this problem requires the development of text mining pipelines; the efficiency of which strongly depends on the availability of curated corpora. However, there is a lack of COVID-19-related corpora, even more, if considering other languages besides English. This project's main contribution was the annotation of a multilingual parallel corpus and the generation of a recommendation dataset (EN-PT and EN-ES) regarding relevant entities, their relations, and recommendation, providing this resource to the community to improve the text mining research on COVID-19-related literature. This work was developed during the 7th Biomedical Linked Annotation Hackathon (BLAH7).

A DQN-based Two-Stage Scheduling Method for Real-Time Large-Scale EVs Charging Service

  • Tianyang Li;Yingnan Han;Xiaolong Li
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.18 no.3
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    • pp.551-569
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    • 2024
  • With the rapid development of electric vehicles (EVs) industry, EV charging service becomes more and more important. Especially, in the case of suddenly drop of air temperature or open holidays that large-scale EVs seeking for charging devices (CDs) in a short time. In such scenario, inefficient EV charging scheduling algorithm might lead to a bad service quality, for example, long queueing times for EVs and unreasonable idling time for charging devices. To deal with this issue, this paper propose a Deep-Q-Network (DQN) based two-stage scheduling method for the large-scale EVs charging service. Fine-grained states with two delicate neural networks are proposed to optimize the sequencing of EVs and charging station (CS) arrangement. Two efficient algorithms are presented to obtain the optimal EVs charging scheduling scheme for large-scale EVs charging demand. Three case studies show the superiority of our proposal, in terms of a high service quality (minimized average queuing time of EVs and maximized charging performance at both EV and CS sides) and achieve greater scheduling efficiency. The code and data are available at THE CODE AND DATA.

A Design and Development of n Large Scale On-Line Game Server Based on PaaS (PaaS 기반 대규모 온라인 게임 서버 설계 및 구현)

  • Hur, Sung-Jin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.9 no.4
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    • pp.1006-1011
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    • 2008
  • In this paper, we developed a system for large scale on-line interactive game server based on Platform as a Service(PaaS). Small and medium sized game developing companies have various aspects of limitation to launch a large scale on line game site. By using the system proposed in this paper, small and medium sized game developing companies can easily publish their games into market.

An empirical study of the effectiveness of spatial navigation system - Focus on large-scale web sites - (공간 지식을 적용한 항해 시스템에 관한 연구 - 대규모 웹 사이트를 중심으로 -)

  • Suh, Jin-Won;Kim, Jin-Woo
    • Asia pacific journal of information systems
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    • v.11 no.2
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    • pp.79-98
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    • 2001
  • As the average size of web sites gets larger, users tend to experience more severe problems while navigating through the sites. In order to alleviate the navigation-related problems, this paper proposes two new navigation systems based on the spatial metaphor to the navigation in the real world. Prototypes of the two system, Complete Route Navigation(CRN) and Complete Survey Navigation(CSN), were developed and applied to four versions of test bed web sites, which were then used in an experiment to test the effectiveness of the two navigation systems. Results from the experiment indicate that the two systems are indeed effective in aiding users to navigate in a large scale web site, and have more positive impacts when provided together. This paper ends with the limits of the study results and their implications to the development of large-scale web sites.

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Strategies for Sustainability of the Project for Developing Large-Scale Environment-Friendly Agricultural Districts (광역친환경농업단지 조성사업에 따른 변화실태 및 지속가능기반 확충방안)

  • Heo, Seung-Wook;Kim, Ho
    • Korean Journal of Organic Agriculture
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    • v.21 no.3
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    • pp.351-362
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    • 2013
  • The Purpose of this paper is to suggest sustainable strategies of the project for developing large-scale environment-friendly agricultural districts (LSEAD). This study used assessment 3 indicators, efficiency, impact and sustainability of environment-friendly agricultural certification area and farmers, management situations of crop-livestock circulation center, educations for environment-friendly farming, changes of farmer's income and so on. This project has contributed to develop environment- friendly agriculture and model of LSEAD. And for sustainable development of LSEAD, it is necessary to renovate crop-livestock circulation centers, promote organic farming of resource-circulation type, converse to non-pesticide or organic farming of low pesticide one, do active marketing activities, establish a governance system of business projects and so forth.

Study on problems of the farmland and water management on the large scale plots (대구획 논의 경지기반 및 물관리 실태조사 분석)

  • Jeon, Jong-Gil;Lee, Sang-Bong;Yun, Jin-Ha;Gang, Chang-Ho
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 2005.10a
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    • pp.215-218
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    • 2005
  • This study was carried out to find problems of the farmland according to the large scale land consolidation projects. Field ramp have problems such as steep slope, narrow width and the difficulty of entering into field and exiting from it. In case of the even ratio of the paddy plot, It showed that the difference of the maximum average level were 8.4cm for the general plots($0.3{\sim}0.4ha$), 12.6cm for the large scale plots($0.8{\sim}1.0ha$), and the level of outlet part was higher than the level of inlet part in some plots. Also, most of presently using inlets are closed and opened manually. It showed that farmers had difficult in the operating of the inlets or the outlets. So it is required the development of the suitable inlets and the suitable outlets.

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