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SSrN 2022年

作者： Shen, Cheng Su, Liti Zhao, Yaqian Liu, Wenbo Liu, ranbin Zhang, Fuhao Shi, Yun Wang, Jie Tang, Qiuqi Yang, Yan Man, Yu Bon Zhang, Jin School of Environment and Natural Resources Zhejiang University of Science & Technoogyl Zhejiang Hangzhou310000 China Sino-Dutch R&D Centre for Future Wastewater Treatment Technologies Beijing Advanced Innovation Center of Future Urban Design Beijing University of Civil Engineering & Architecture Beijing100044 China Dooge Centre for Water Resources Research School of Civil Engineering University College Dublin Belfield Dublin 4 Ireland State Key Laboratory of Eco-Hydraulics in Northwest Arid Region Xi’an University of Technology Xi’an710048 China Department of Science and Environmental Studies The Education University of Hong Kong 10 Lo Ping Road Tai Po Hong Kong Zhejiang University of Science and Technology China University College Dublin Ireland

Pyrite-driven autotrophic denitrification (PAd) is attractive for nitrogen removal from organic-deficient wastewater. However, the low denitrification rate is one major limitation of PAd. Among the engineered applications of PAd, the PAd-integrated CW performed excellently in both nitrogen and phosphorus removal. As plants were the key difference between CWs and other engineered systems, we suppose that plants play a significant role in PAd. Thus, the role of plants in nitrogen removal, pyrite dissolution, and microbial community has been identified. The results show that plants enhanced the TN removal significantly (from 41.6±3.9% to 97.1±2.6%). Plants can accelerate the PAd in CW through the strengthening of pyrite dissolution. Enriched functional (Thiobacillus and Acidiferrobacter) and close interaction among microbes related to the iron, nitrogen, and sulfur cycles has been found in CW with plants. This study identified the role of plants in PAd acceleration, providing an in-depth understanding of pyrite in CW systems. © 2022, The Authors. All rights reserved.

关键词： denitrification

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Study on suspension stability of high-speed HTS Maglev system in evacuated tube 2nd

Study on suspension stability of high-speed HTS Maglev syste...

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2nd International Conference on Smart Vehicular Technology, Transportation, Communication and Applications, VTCA 2018

作者： Zhou, dajin Zhao, Lifeng Yang, Ye Zhang, Yong Zhao, Yong College of Physics and Energy Fujian Normal University FuzhouFujian350117 China Key Laboratory of Magnetic Levitation Technologies and Maglev Trains Ministry of Education of China Superconductivity and New Energy R&D Center Southwest Jiaotong University Chengdu610031 China Central Academy Dongfang Electric Corporation Chengdu611731 China

ISBN: (纸本)9783030045845

For the high-speed high-Tc superconducting (HTS) maglev system in evacuated pipe, the side-mounted permanent magnet double-track is used to provide suspension and guidance for the train. When the maglev is running in a round track or a curve, the centrifugal force exerts a side pressure on the track, causing displacement in the suspension direction. In this paper, the static simulation experiment is used to study the instability caused by suspension displacement during the dynamic process of maglev. The results show that under the premise of a given field cooling airgap, the suspension force decreases with the decrease of the suspended airgap and strengthens with the increase of the suspension displacement. In addition, reducing the field cooling airgap can increase the suspension force and reduce the suspension displacement. When the field cooling air gap on the spot is 10 mm and the initial suspension displacement is 2 mm, the suspension displacement will not exceed 2 mm when the train runs to the rated airgap of 5 mm, so that the train maintains high side suspension stability. The research results of this paper provide useful design reference for the application of high speed HTS maglev train in the evacuated tube. © Springer Nature Switzerland AG 2019.

关键词： Magnetic levitation

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recent advancements in sustainable upcycling of solid waste into porous carbons for carbon dioxide capture

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rENEWABLE & SUSTAINABLE ENErGY rEVIEWS 2022年 162卷

作者： Yuan, Xiangzhou Wang, Junyao deng, Shuai Suvarna, Manu Wang, Xiaonan Zhang, Wei Hamilton, Sara Triana Alahmed, Ammar Jamal, Aqil Park, Ah-Hyung Alissa Bi, Xiaotao Ok, Yong Sik Korea Univ Korea Biochar Res Ctr APRU Sustainable Waste Management Program Seoul 02841 South Korea Korea Univ Div Environm Sci & Ecol Engn Seoul 02841 South Korea Sun Brand Ind Inc R&D Ctr Jeollanam Do 57248 South Korea Guangdong Univ Technol Sch Mat & Energy Guangzhou 510006 Peoples R China Tianjin Univ Minist Educ China Key Lab Efficient Utilizat Low & Medium Grade Ene Tianjin 300350 Peoples R China Natl Univ Singapore Dept Chem & Biomol Engn Singapore 117585 Singapore Tsinghua Univ Dept Chem Engn Beijing 100084 Peoples R China Guangzhou Univ Inst Environm Res Greater Bay Area Guangzhou 510006 Peoples R China Guangzhou Univ Key Lab Water Qual & Conservat Pearl River Delta Minist Educ Guangzhou 510006 Peoples R China Columbia Univ Dept Earth & Environm Engn New York NY 10027 USA Columbia Univ Dept Chem Engn New York NY 10027 USA Columbia Univ Lenfest Ctr Sustainable Energy Earth Inst New York NY 10027 USA Saudi Aramco Res & Dev Ctr Dhahran 31311 Saudi Arabia Univ British Columbia Dept Chem & Biol Engn 2360 East Mall Vancouver BC V6T 1Z3 Canada Univ British Columbia Clean Energy Res Ctr 2360 East Mall Vancouver BC V6T 1Z3 Canada

Carbon capture technologies have been extensively investigated as indispensable tools for reducing CO2 emissions. In particular, CO2 capture using solid waste-derived porous carbons (SWdPCs) has attracted significant research attention as one of the most promising and sustainable approaches to simultaneously mitigate climate change and address solid waste management challenges. Considerable research has recently been conducted on the thermal and chemical treatments of solid waste for upcycling into porous carbons (PCs) for effective and selective CO2 capture. In this review, we discuss the synergistic benefits of employing SWdPCs for CO2 capture and introduce innovative approaches for converting solid waste into PCs with the desired physical and chemical properties. The performance of SWdPCs for CO2 capture is comprehensively discussed in terms of the synthesis route, CO2 capture capacity, process cyclability, and sample optimization guided by machine learning. Furthermore, the mechanisms of CO2 capture on PCs are discussed based on pore structures and incorporated surface functional groups. The life-cycle environmental impact of the PCs synthesized from solid waste and their practical applications for CO2 capture are also evaluated. The overall environmental benefits of the proposed SWdPC-based CO2 capture approach are analyzed in relation to the United Nations Sustainable development Goals. Furthermore, the remaining challenges in upcycling solid waste into high-performance CO2 adsorbents are discussed, and potential solutions are proposed.

关键词： Life-cycle assessment Machine learning Sustainable development goal Low carbon technology Carbon neutral Circular economy

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Capacity improvement for mixed traffic flow by installing vehicle-to-vehicle devices on partial human-driven vehicles to serve connected automated vehicles

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Physica A: Statistical Mechanics and its Applications 2025年 674卷

作者： Yan Wang Yanyan Qin Zhongbin Luo Hao Wang Chongqing Key Laboratory of Intelligent Integrated and Multidimensional Transportation System Chongqing Jiaotong University Chongqing 400074 China School of Traffic and Transportation Chongqing Jiaotong University Chongqing 400074 China College of Computer Science Chongqing University Chongqing 400044 China China Merchants Chongqing Communications Reseach & Design Institute Co. Ltd. Chongqing 400067 China Transportation Industry R&D Center for Autonomous Driving Technology Chongqing 400067 China Jiangsu Key Laboratory of Urban ITS Southeast University Nanjing 211189 China Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies Nanjing 211189 China School of Transportation Southeast University Nanjing 211189 China

Vehicle-to-vehicle (V2V) communication technology in connected automated vehicles (CAVs) substantially improves traffic capacity. during initial CAV deployment phases, mixed traffic flow combining CAVs and human-driven vehicles (HVs) will inevitably co-exist on highways. The absence of V2V capabilities in HVs prevents them from providing V2V services to CAVs, thereby constraining CAVs’ capacity improvement in mixed traffic environments. To address this limitation, we propose equipping partial HVs with V2V communication devices, enabling these retrofitted HVs to transmit V2V information and create essential communication environment for CAVs. This study develops a mixed traffic capacity analysis framework that simultaneously incorporates CAV penetration rate and V2V installation rate of HVs, which aims to improve mixed traffic capacity by adjusting the V2V installation rate of HVs. Firstly, we classified car-following patterns within mixed traffic flow and calculate their probabilities. Secondly, a mixed traffic capacity model was constructed using fundamental diagram theory. Using the established model, critical values for V2V installation rate of HVs were analytically derived to achieve capacity improvements under varying CAV penetration rates. Finally, numerical experiments validated both the model’s reliability and theoretical derivations. results demonstrate that the proposed model effectively quantifies how CAV penetration rate and V2V installation rate of HVs jointly influence mixed traffic capacity. Strategic adjustment of V2V installation rate of HVs based on each level of CAV penetration rates significantly enhances mixed traffic capacity.

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In-situ observation of hydrogen nanobubbles formation on graphene surface by AFM-SECM

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Electrochimica Acta 2024年 493卷

作者： Kholimatussadiah, Septia Hsu, Chia-Ling Ke, Shang-Wei Chou, Tsu-Chin Wu, Yung-Fu Yakimova, rositsa Kumatani, Akichika Chen, Kuei-Hsien Chen, Li-Chyong du, He-Yun Department of Physics National Taiwan University Taipei 10617 Taiwan Nano Science and Technology Taiwan International Graduate Program Academia Sinica Taipei 10617 Taiwan Center for Condensed Matter Sciences National Taiwan University Taipei 10617 Taiwan Center of Atomic Initiative for New Materials National Taiwan University Taipei 10617 Taiwan Department of Chemical Engineering Ming Chi University of Technology New Taipei City24301 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei 10617 Taiwan Institute of Analytical and Environmental Sciences National Tsing Hua University Hsinchu 300044 Taiwan Department of Physics Chemistry and Biology Linköping University SE-581 83 Linköping Sweden Institute of Engineering Innovation School of Engineering The University of Tokyo Tokyo 113-8656 Japan Saitama 332-0012 Japan Tohoku University Sendai980-8577 Japan Battery Research Center of Green Energy Ming Chi University of Technology New Taipei City24301 Taiwan Biochemical Technology R&D Center Ming Chi University of Technology New Taipei City24301 Taiwan Center for Sustainability and Energy Technologies Chang Gung University Taoyuan City33302 Taiwan

Gas bubble evolution is an important phenomenon in many electrochemical processes and it is highly sensitive to the surface properties. Here we visualize the gas bubble dynamics on the surface of different graphene substrates during hydrogen evolution reaction (HEr) using atomic force microscopy combined with scanning electrochemical microscopy. The low overpotential and low surface hydrophobicity of few-layer graphene formed on C-phase SiC causes the uniform distribution of hydrogen nanobubbles, which easily depart from the surface during the reaction. Conversely, the high overpotential and more hydrophobic surface of HOPG induces hydrogen bubbles to linger on the surface for an extended duration, leading to its accumulation and the subsequent formation of microbubbles. This in-situ nanoscale electrochemical mapping of hydrogen bubble dynamics provides new insight into electrocatalytic HEr that occurs on non-metal electrodes. © 2024 Elsevier Ltd

关键词： Graphene

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dynamic Carbon Emission Linkages Across Boundaries

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EArTHS FUTUrE 2019年第2期7卷 197-209页

作者： Chen, Shaoqing Liu, Zhu Chen, Bin Zhu, Feiyao Fath, Brian d. Liang, Sai Su, Meirong Yang, Jin Sun Yat Sen Univ Sch Environm Sci & Engn Guangzhou Guangdong Peoples R China Sun Yat Sen Univ Guangdong Prov Key Lab Environm Pollut Control & Guangzhou Guangdong Peoples R China Tsinghua Univ Dept Earth Syst Sci Minist Educ Key Lab Earth Syst Modeling Beijing Peoples R China Univ East Anglia Sch Int Dev Tyndall Ctr Climate Change Res Norwich Norfolk England Beijing Normal Univ Sch Environm State Key Joint Lab Environm Simulat & Pollut Con Beijing Peoples R China Towson Univ Dept Biol Sci Towson MD USA Int Inst Appl Syst Anal Adv Syst Anal Program Laxenburg Austria Dongguan Univ Technol Technol R&D Ctr Environm Engn Dongguan Peoples R China China Univ Geosci Sch Humanities & Econ Management Beijing Peoples R China

Cities are increasingly linked to domestic and foreign markets during rapid globalization of trade. While transboundary carbon footprints of cities have been recently highlighted, we still have limited understanding of how carbon emission linkages between sectors are reshaping urban carbon footprints through time. In this study, we propose an integrated input-output approach to trace the dynamics of various types of carbon emission linkages associated with a city. This approach quantifies full linkages in the urban carbon system from both production- and consumption-based perspectives. We assess the dynamic roles that economic sectors and activities play in manipulating multiscale linkages induced by local, domestic, and international inputs. Using Beijing as a case study, we find that imports from domestic and foreign markets have an increasing impact on the city's carbon footprint with more distant linkages during the period from 1990 to 2012. The manufacturing-related carbon emission linkages have been increasingly transferred outside the urban boundary since 2005, while the linkages from the energy sector to services sectors remain important in Beijing's local economy. Applying systems thinking to input-output linkage analysis provides important details on when and how carbon emission linkages evolved in cities, whereby sector-oriented and activity-oriented carbon mitigation policies can be formulated. Plain Language Summary Cities are increasingly linked to domestic and foreign markets during rapid globalization of trade. In this study, we propose an integrated approach to answer the question: what drives the carbon emissions from urban activities? We assess the dynamic roles that economic sectors and activities play in manipulating carbon flows related to local, domestic, and international inputs. Using Beijing as a case study, we find that imports from domestic and foreign markets have an increasing impact on the city's carbon flows from 1990 to 2012. The man

关键词： carbon emission linkages input-output analysis dynamic linkage analysis urban decarbonization

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An internal recycling mechanism between ammonia/ammonium and nitrate driven by ammonia-oxidizing archaea and bacteria (AOA, AOB, and Comammox) and dNrA on Angkor sandstone monuments

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INTErNATIONAL BIOdETErIOrATION & BIOdEGrAdATION 2021年 165卷 105328-105328页

作者： ding, Xinghua Lan, Wensheng Li, Yiliang Yan, Aixin Katayama, Yoko Koba, Keisuke Makabe, Akiko Fukushima, Keitaro Yano, Midori Onishi, Yuji Ge, Qinya Gu, Ji-dong Univ Hong Kong Sch Biol Sci Lab Environm Microbiol & Toxicol Pokfulam Rd Hong Kong Peoples R China Shenzhen Acad Inspect & Quarantine Food Inspect & Quarantine Ctr Shenzhen Customs Shenzhen R&D Key Lab Alien Pest Detect Technol 1011 Fuqiang Rd Shenzhen 518045 Peoples R China Univ Hong Kong Dept Earth Sci Pokfulam Rd Hong Kong Peoples R China Tokyo Univ Agr & Technol Inst Agr Fuchu Tokyo 1838509 Japan Tokyo Natl Res Inst Cultural Properties Taito Ku 13-43 Ueno Pk Tokyo 1108713 Japan Kyoto Univ Ctr Ecol Res Otsu Shiga 5202113 Japan Japan Agcy Marine Earth Sci & Technol Inst Extra Cutting Edge Sci & Technol Avant Garde Super Cutting Edge Grand & Adv Res SUGAR Program Yokosuka Kanagawa 2370061 Japan Chinese Acad Cultural Heritage 2 Gaoyuan St Beijing 100029 Peoples R China Guangdong Technion Israel Inst Technol Environm Sci & Engn Res Grp 241 Daxue Rd Shantou 515063 Guangdong Peoples R China

The ancient Angkorian sandstone monuments in Cambodia are well known for biodeterioration of the sandstone under tropic climate. This study examined ammonia oxidizing bacteria (AOB and Comammox) and archaea (AOA) in stone-dwelling microbiome from three important Angkor monuments, namely Angor Wat, Bayon of Angkor Thom, and Preah Vihear, by dNA-based metagenomics analysis, rNA-based functional gene reverse transcriptional (rT)-qPCr quantification, and N-15 isotope analysis. Our metagenomics datasets on these three monuments reveal a rich microbiome and abundant microbial nitrogen transforming reactions of ammonia oxidation and nitrite oxidation, Comammox and dissimilatory nitrate reduction to ammonium (dNrA), and these results support an internal recycling mechanism between ammonia/ammonium and nitrate by AOA, AOB, Comammox and dNrA on the stone monuments to support the microbial community. Though a wide range of AOB and AOA lineages together with Comammox were retrieved from these metagenomes as the potential ammonia-oxidizers, only AOA and Comammox were most abundant, likely to contribute to the biochemical processes of ammonia oxidation. The rNA-based qPCr quantification of the functional gene amoA in this study showed that AOA were the more active ammonia oxidizers over AOB in the microbiome of these Angkor sandstone monuments. In addition, a rich population of nitrite/nitrate producing AOA and Comammox drove the sequestration of CO2 onto the stone and this process was in turn supported by dNrA to provide the substrate ammonia/ammonium for a further cyclic reaction to take place continuously between ammonia/ammonium and nitrate. This model is further supported by the high enrichment of stable isotope N-15 signature of NO3- in sandstone surface biofilms. The findings of this study are insightful for elucidation of nitrate accumulation by an internal N cycling mechanism proposed, and are important for understanding the sustainable microbial community and protection

关键词： Ammonia oxidizing archaea Ammonia oxidizing bacteria dissimilatory nitrate reduction to ammonia Comammox Nitrogen cycle Stone Biodeterioration

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de novo design of highly selective miniprotein inhibitors of integrins αvβ6 and αvβ8

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NATUrE COMMUNICATIONS 2023年第1期14卷 5660页

作者： roy, Anindya Shi, Lei Chang, Ashley dong, Xianchi Fernandez, Andres Kraft, John C. Li, Jing Le, Viet Q. Winegar, rebecca Viazzo Cherf, Gerald Maxwell Slocum, dean Poulson, P. daniel Casper, Garrett E. Vallecillo-Zuniga, Mary L. Valdoz, Jonard Corpuz Miranda, Marcos C. Bai, Hua Kipnis, Yakov Olshefsky, Audrey Priya, Tanu Carter, Lauren ravichandran, rashmi Chow, Cameron M. Johnson, Max r. Cheng, Suna Smith, McKaela Overed-Sayer, Catherine Finch, donna K. Lowe, david Bera, Asim K. Matute-Bello, Gustavo Birkland, Timothy P. diMaio, Frank raghu, Ganesh Cochran, Jennifer r. Stewart, Lance J. Campbell, Melody G. Van ry, Pam M. Springer, Timothy Baker, david Univ Washington Dept Biochem Seattle WA 98195 USA Univ Washington Inst Prot Design Seattle WA 98195 USA Brigham Young Univ Dept Chem & Biochem Provo UT 84602 USA Childrens Hosp Boston Program Cellular & Mol Med Boston MA 02115 USA Harvard Med Sch Dept Biol Chem Boston MA 02115 USA Harvard Med Sch Dept Mol Pharmacol Boston MA 02115 USA Harvard Med Sch Dept Med Boston MA 02115 USA Fred Hutchinson Canc Ctr Div Basic Sci Seattle WA 98109 USA Stanford Univ Dept Bioengn Stanford CA 94305 USA Univ Washington Howard Hughes Med Inst Seattle WA 98195 USA Univ Washington Dept Bioengn Seattle WA 98195 USA Univ Washington Dept Mat Sci & Engn Seattle WA 98195 USA AstraZeneca Res & Early Dev Resp & Immunol BioPharmaceut R&D Cambridge England Univ Washington Ctr Lung Biol Div Pulm Crit Care & Sleep Med Seattle WA USA Univ Washington Dept Med Div Pulm Crit Care & Sleep Med Seattle WA USA Univ Washington Dept Med Seattle WA USA Encodia Inc 5785 Oberlin Dr San Diego CA 92121 USA Nanjing Univ Sch Life Sci State Key Lab Pharmaceut Biotechnol Nanjing Peoples R China Minist Educ Engn Res Ctr Prot & Peptide Med Nanjing Peoples R China Denali Therapeut San Francisco CA USA Karolinska Inst Dept Med Solna Div Immunol & Allergy Stockholm Sweden Karolinska Univ Hosp Stockholm Sweden Northwestern Univ Feinberg Sch Med Dept Pharmacol Chicago IL 60611 USA AstraZeneca Res & Early Dev Resp & Immunol BioPharmaceut R&D Biosci COPD IPF Cambridge England Alchemab Therapeut Ltd Cambridge England Evox Therapeut Ltd Medawar Ctr Oxford Sci PkEast BldgRobert Robinson Ave Oxford OX4 4HG England

The rGd (Arg-Gly-Asp)-binding integrins alpha v beta 6 and alpha v beta 8 are clinically validated cancer and fibrosis targets of considerable therapeutic importance. Compounds that can discriminate between homologous alpha v beta 6 and alpha v beta 8 and other rGd integrins, stabilize specific conformational states, and have high thermal stability could have considerable therapeutic utility. Existing small molecule and antibody inhibitors do not have all these properties, and hence new approaches are needed. Here we describe a generalized method for computationally designing rGd-containing miniproteins selective for a single rGd integrin heterodimer and conformational state. We design hyperstable, selective alpha v beta 6 and alpha v beta 8 inhibitors that bind with picomolar affinity. CryoEM structures of the designed inhibitor-integrin complexes are very close to the computational design models, and show that the inhibitors stabilize specific conformational states of the alpha v beta 6 and the alpha v beta 8 integrins. In a lung fibrosis mouse model, the alpha v beta 6 inhibitor potently reduced fibrotic burden and improved overall lung mechanics, demonstrating the therapeutic potential of de novo designed integrin binding proteins with high selectivity.

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Extracellular polymeric substance-intercalated MXene membrane for osmotic power generation

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Chemical Engineering Journal 2025年 515卷

作者： Cao, da-Qi Tang, Kai Yihuo, Guri Jin, Yan Song, Yi-Xuan Wu, Yun-Feng Zhang, Wen-Yu Zhang, Zhongguo Ma, Ming-Guo Song, Li Hao, Xiao-di Sino-Dutch R&D Centre for Future Wastewater Treatment Technologies/Key Laboratory of Urban Stormwater System and Water Environment Beijing University of Civil Engineering and Architecture Beijing100044 China Beijing Municipal Research Institute of Eco-Environmental Protection Beijing100037 China National Engineering Laboratory of Circular Economy Institute of Resources and Environment Beijing Academy of Science and Technology Beijing100095 China Research Center of Biomass Clean Utilization MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy Beijing Key Laboratory of Lignocellulosic Chemistry College of Materials Science and Technology Beijing Forestry University Beijing100083 China National Synchrotron Radiation Laboratory Chinese Academy of Sciences Center for Excellence in Nanoscience University of Science and Technology of China Anhui Hefei230029 China

Extracellular polymeric substances (EPSs) recycled from excess sludge in wastewater treatment plant are biological macromolecules and high value-added materials, because of containing abundant characteristic functional groups. In this work, using EPSs as an intercalation agent between two-dimensional (2d) transition metal carbide and nitride (MXene) nanosheets, EPS-intercalated MXene (EPS-M) membranes were successfully constructed for reverse electrodialysis (rEd) salinity gradient energy harvesting. The interlayer spacing of MXene nanosheets in the EPS-M membranes was constrained effectively at 1.48 ± 0.02 nm regardless of environmental conditions. For the optimized EPS-M membrane with 10 % EPS mass content, the ultimate strength was 71 MPa, which was 6 times higher than that obtained by pristine MXene membrane. The typical groups such as hydroxyl and carboxyl groups present in EPS enhanced the negative surface charge of EPS-M membranes, resulting in high ion permeability and cation selectivity. The enhanced hydrophilicity induced by EPS contributed to the reduced membrane resistance. A model (0.5 M/0.01 M NaCl solutions) was used to investigate the salinity gradient power generation of sea water/secondary effluent of WWTP in rEd process with EPS-M membrane;and the maximum output power density reached 5.89 W m−2, which was 1.86 times higher than that obtained using the pristine MXene membrane. This study opens a novel application of high value-added recycled EPS, which can be considered as a cost-effective biological composite material to improve MXene 2d membrane performance compared to the macromolecules such as nanofiber and cellulose. © 2025 Elsevier B.V.

关键词： Wastewater reclamation

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AIM 2020 Challenge on Video Extreme Super-resolution: Methods and results 16th

AIM 2020 Challenge on Video Extreme Super-Resolution: Method...

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Workshops held at the 16th European Conference on Computer Vision, ECCV 2020

作者： Fuoli, dario Huang, Zhiwu Gu, Shuhang Timofte, radu raventos, Arnau Esfandiari, Aryan Karout, Salah Xu, Xuan Li, Xin Xiong, Xin Wang, Jinge Navarrete Michelini, Pablo Zhang, Wenhao Zhang, dongyang Zhu, Hanwei Xia, dan Chen, Haoyu Gu, Jinjin Zhang, Zhi Zhao, Tongtong Zhao, Shanshan Akita, Kazutoshi Ukita, Norimichi Hrishikesh, P.S. Puthussery, densen Jiji, C.V. ETH Zürich Zürich Switzerland University of Sydney Sydney Australia Huawei Technologies R&D UK Ipswich United Kingdom West Virginia University Morgantown United States Huazhong University of Science and Technology Wuhan China BOE Technology Group Co. Ltd. Beijing China Jiangxi University of Finance and Economics Nanchang China National Key Laboratory for Remanufacturing Army Academy of Armored Forces Beijing China Amazon Web Services Seattle United States The Chinese University of Hong Kong Shenzhen China Dalian Maritime University Dalian China China Everbright Bank Co. Ltd. Beijing China Nagoya Japan College of Engineering Trivandrum Thiruvananthapuram India

ISBN: (纸本)9783030668228

This paper reviews the video extreme super-resolution challenge associated with the AIM 2020 workshop at ECCV 2020. Common scaling factors for learned video super-resolution (VSr) do not go beyond factor 4. Missing information can be restored well in this region, especially in Hr videos, where the high-frequency content mostly consists of texture details. The task in this challenge is to upscale videos with an extreme factor of 16, which results in more serious degradations that also affect the structural integrity of the videos. A single pixel in the low-resolution (Lr) domain corresponds to 256 pixels in the high-resolution (Hr) domain. due to this massive information loss, it is hard to accurately restore the missing information. Track 1 is set up to gauge the state-of-the-art for such a demanding task, where fidelity to the ground truth is measured by PSNr and SSIM. Perceptually higher quality can be achieved in trade-off for fidelity by generating plausible high-frequency content. Track 2 therefore aims at generating visually pleasing results, which are ranked according to human perception, evaluated by a user study. In contrast to single image super-resolution (SISr), VSr can benefit from additional information in the temporal domain. However, this also imposes an additional requirement, as the generated frames need to be consistent along time. © 2020, Springer Nature Switzerland AG.

关键词： Pixels

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