• Title/Summary/Keyword: 3S technologies

Search Result 1,654, Processing Time 0.031 seconds

European Union System of Fisheries Management Based on Information and Communication Technology (유럽연합의 ICT기반 수산업 구조개선 현황)

  • Oh, Hyuntaik;Lee, Wonchan;Jung, Raehong;Kim, Hyeonchul
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.46 no.5
    • /
    • pp.513-519
    • /
    • 2013
  • The fishing industry in Europe has faced environmental, economic, and social challenges. Since the early 2000s, a key tool in addressing these challenges has been information and communication technology (ICT), which has helped to modernize fishery systems in European Union (EU) countries. The ICT used in EU fisheries can be categorized broadly as 1) macro-technologies such as satellite and other remote sensing technologies in combination with geographical information systems, 2) micro-technologies adapted for fishing vessels such as echo sounders, ship navigation devices, and mobile communication devices to connect fishermen and consumers, and 3) onshore micro-technologies related to internet technology and mobile devices. The European Monitoring Center on Change has used ICT to effectively manage fisheries bio-resources. This use of ICT has contributed to the development of sustainable and competent fisheries in the 2000s, even though the knowledge-sharing practices involved are contrary to the long tradition of autonomy within the fishery industry.

Trends in Low Altitude Small Drone Identification Technology and Standardization (저고도 소형드론 식별 기술 및 표준화 동향)

  • Kang, K.M.;Park, J.C.;Choi, S.N.;Oh, J.H.;Hwang, S.H.
    • Electronics and Telecommunications Trends
    • /
    • v.34 no.6
    • /
    • pp.164-174
    • /
    • 2019
  • This article presents low altitude small drone identification trends at home and abroad. To reduce the dysfunction caused by the proliferation of drones worldwide, there is a growing interest in remote identification technologies that can identify the basic information of the drone. First, this article introduces policy trends in major countries. US, Europe, and China have recently provided recommendations regarding technologies available for the remote identification and tracking of a drone. Next, standardization activities on identification communications and identification systems are introduced. For this, standards organizations for the small drone identification, such as the International Organization for Standardization, IEEE 802, Radio Technical Commission for Aeronautics, International Civil Aviation Organization, and $3^{rd}$ Generation Partnership Project, are investigated. Finally, drone identification technology trends are introduced. In the US and Europe, various drone identification technologies have been studied to identify a drone owner and drone registration information with a drone identifier. In South Korea, drone identification technology is still in its infancy, whereas drone detection and physical counterattack technologies are somewhat more developed. As such, major drone manufacturers are also currently studying and developing drone identification systems.

Design of a direct-cycle supercritical CO2 nuclear reactor with heavy water moderation

  • Petroski, Robert;Bates, Ethan;Dionne, Benoit;Johnson, Brian;Mieloszyk, Alex;Xu, Cheng;Hejzlar, Pavel
    • Nuclear Engineering and Technology
    • /
    • v.54 no.3
    • /
    • pp.877-887
    • /
    • 2022
  • A new reactor concept is described that directly couples a supercritical CO2 (sCO2) power cycle with a CO2-cooled, heavy water moderated pressure tube core. This configuration attains the simplification and economic potential of past direct-cycle sCO2 concepts, while also providing safety and power density benefits by using the moderator as a heat sink for decay heat removal. A 200 MWe design is described that heavily leverages existing commercial nuclear technologies, including reactor and moderator systems from Canadian CANDU reactors and fuels and materials from UK Advanced Gas-cooled Reactors (AGRs). Descriptions are provided of the power cycle, nuclear island systems, reactor core, and safety systems, and the results of safety analyses are shown illustrating the ability of the design to withstand large-break loss of coolant accidents. The resulting design attains high efficiency while employing considerably fewer systems than current light water reactors and advanced reactor technologies, illustrating its economic promise. Prospects for the design are discussed, including the ability to demonstrate its technologies in a small (~20 MWe) initial system, and avenues for further improvement of the design using advanced technologies.

Priority survey between indicators and analytic hierarchy process analysis for green chemistry technology assessment

  • Kim, Sungjune;Hong, Seokpyo;Ahn, Kilsoo;Gong, Sungyong
    • Environmental Analysis Health and Toxicology
    • /
    • v.30 no.sup
    • /
    • pp.3.1-3.11
    • /
    • 2015
  • Objectives This study presents the indicators and proxy variables for the quantitative assessment of green chemistry technologies and evaluates the relative importance of each assessment element by consulting experts from the fields of ecology, chemistry, safety, and public health. Methods The results collected were subjected to an analytic hierarchy process to obtain the weights of the indicators and the proxy variables. Results These weights may prove useful in avoiding having to resort to qualitative means in absence of weights between indicators when integrating the results of quantitative assessment by indicator. Conclusions This study points to the limitations of current quantitative assessment techniques for green chemistry technologies and seeks to present the future direction for quantitative assessment of green chemistry technologies.

Innovative Technologies and Their Application on the Construction of a 100-Plus-Story Skyscraper

  • Haowen, Ye
    • International Journal of High-Rise Buildings
    • /
    • v.4 no.3
    • /
    • pp.161-169
    • /
    • 2015
  • Experience on the construction of several 100-plus-story skyscrapers including Guangzhou West Tower, Guangzhou East Tower, and Shenzhen's KK100 is described considering the increasingly strong development trend of 100-plus-story skyscrapers in China. Difficulties in the construction of 100-plus-story skyscrapers are investigated. Four innovative construction technologies receive detailed descriptions: intelligently and entirely-jacked work platforms, formwork and suspension scaffolding systems ("jacking and formwork systems"), multi-function low-carbon concrete, 5D-BIM ("five-dimensional building information modeling"), and safe and rapid vertical transport, as they have found successful applications in actual projects. Popularized systematically as technical achievements, these technologies will significantly influence the construction of similar projects in the future, and produce more social and economic benefits.

Role of the Public Research Institutes in Regional Innovation System: the Case of Gwangju Institute of Science and Technology (지역 기술혁신에 대한 공공연구기관의 이해와 실천: 광주과학기술원 사례)

  • Lee Kong-Rae;Choi Ji-Sun
    • Journal of Korea Technology Innovation Society
    • /
    • v.8 no.3
    • /
    • pp.955-985
    • /
    • 2005
  • This paper describes the evolutionary trajectory of the missions of public research institutes(PRIs) in Korea since 1960s and analyses the newly highlighted role of PRIs as the facilitators of regional innovation system, with questionnaire surveys and the case study of Gwangju Institute of Science and Technology(GIST). PRIs have played important roles in Korean rapid economic development by introducing and improving foreign high-technologies in 1970s and 1980s and by creating new advanced high-technologies in 1990s. In recent years, the functions as regional technology innovators have been considered important as regional innovation system has come to the center of discussion. According to the result of this study, Korean PRIs have recognized their roles relevant to regional innovation, such as developing the technologies of regional strategic industries and awakening regional innovative actors to a sense of research. Regardless of the functions as industrial technology suppliers, however, the bilateral networks between PRIs and regional industries are not revealed strong, whereas those with universities and other research institutes are relatively strong. In addition, the research cooperation of PRIs with regional innovative actors are different by where they are located. The case of GIST shows how a regional PRI operates, commercializes its academic achievement and encourages the regional transfer of the achievement systematically. Finally, this study draws some policy implications on developing regional PRIs.

  • PDF

Affect Heuristic in Risk and Benefit Perception of Scientific Technologies (과학기술의 위험 및 이득 지각에서 감정추단)

  • Lee, Hyun-Ju;Lee, Young-Ai
    • Korean Journal of Cognitive Science
    • /
    • v.18 no.3
    • /
    • pp.305-324
    • /
    • 2007
  • We surveyed the emotional images of three kinds of scientific technologies in people's mind and the perception of technologies in terms of their risks and benefits. The contents of the image and their image values were used to estimate the affects on each technology. As an affect heuristic hypothesis predicted, people perceived the technology more beneficial or riskier depending on their overall affect. In other words, those who have positive affect on the technology Perceived less risky and more beneficial than those who have negative affect. On the other hand, those who have negative affect on the technology perceived riskier and less beneficial than those who have positive affect. We also found negative relationship between the perceived risk and perceived benefit of each technology. The implications of our findings that suggest affective heuristic were discussed in terms of the measurements of affect and the necessity of communication of scientific technologies with the public.

  • PDF

Heat Dissipation Trends in Semiconductors and Electronic Packaging (반도체 및 전자패키지의 방열기술 동향)

  • S.H. Moon;K.S. Choi;Y.S. Eom;H.G. Yun;J.H. Joo;G.M. Choi;J.H. Shin
    • Electronics and Telecommunications Trends
    • /
    • v.38 no.6
    • /
    • pp.41-51
    • /
    • 2023
  • Heat dissipation technology for semiconductors and electronic packaging has a substantial impact on performance and lifespan, but efficient heat dissipation is currently facing limited improvement. Owing to the high integration density in electronic packaging, heat dissipation components must become thinner and increase their performance. Therefore, heat dissipation materials are being devised considering conductive heat transfer, carbon-based directional thermal conductivity improvements, functional heat dissipation composite materials with added fillers, and liquid-metal thermal interface materials. Additionally, in heat dissipation structure design, 3D printing-based complex heat dissipation fins, packages that expand the heat dissipation area, chip embedded structures that minimize contact thermal resistance, differential scanning calorimetry structures, and through-silicon-via technologies and their replacement technologies are being actively developed. Regarding dry cooling using single-phase and phase-change heat transfer, technologies for improving the vapor chamber performance and structural diversification are being investigated along with the miniaturization of heat pipes and high-performance capillary wicks. Meanwhile, in wet cooling with high heat flux, technologies for designing and manufacturing miniaturized flow paths, heat dissipating materials within flow paths, increasing heat dissipation area, and reducing pressure drops are being developed. We also analyze the development of direct cooling and immersion cooling technologies, which are gradually expanding to achieve near-junction cooling.

Quantitative Analysis of Gartner's "Hype Cycle for Emerging Technologies" (가트너 "부상하는 기술을 위한 Hype Cycle"의 정량적 분석)

  • Park, Yoo-hyun
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.22 no.8
    • /
    • pp.1041-1048
    • /
    • 2018
  • Gartner's Hype Cycle model is widely used to describe technology maturity, acceptability, and commercialization. In the Hype Cycle model, the techniques go through five stages, those are Innovation Trigger(first stage), stage Peak of Inflated Expectations(second stage), Trough of Disillusionment(third stage), Slope of Enlightenment(fourth stage) and Plateau of Productivity(fifth stage). In many studies, Hype Cycle is widely used as a basis for future prediction of technology, but the verification is somewhat lacking. In this paper, we analyzed the technologies that appeared in the Hype Cycle for the emerging technologies from 1995 to 2017. Through this, we found technologies that appeared as non first stage when first appearing, and techniques that showed a reversal of the maturity stage. In addition, we found that none of the technologies from 1995 to 2017 had gone through stages 1-5.