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Multi-view dreaming: multi-view world model with contrastive learning

Advanced Robotics 2023年第19期37卷 1212-1220页

作者： Kinose, Akira Okumura, Ryo Okada, Masashi Taniguchi, Tadahiro Research and Development Center Panasonic Connect Co. Ltd. Tokyo Japan Digital and AI Technology Center Technology Division Panasonic Holdings Co Osaka Kadoma Japan College of Information Science and Engineering Ritsumeikan University Kusatsu Japan

In this paper, we propose Multi-View Dreaming, a novel reinforcement learning agent for integrated recognition and control from multi-view observations by extending Dreaming. Most current reinforcement learning method assumes a single-view observation space, and this imposes limitations on the observed data, such as lack of spatial information and occlusions. This makes obtaining ideal observational information from the environment difficult and is a bottleneck for real-world robotics applications. In this paper, we use contrastive learning to train a shared latent space between different viewpoints and show how the Products of Experts approach can be used to integrate and control the probability distributions of latent states for multiple viewpoints. We also propose Multi-View DreamingV2, a variant of Multi-View Dreaming that uses a categorical distribution to model the latent state instead of the Gaussian distribution. Experiments show that the proposed method outperforms simple extensions of existing methods in a realistic robot control task. © 2023 Informa UK Limited, trading as Taylor & Francis Group and The Robotics Society of Japan.

关键词： Reinforcement learning

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Microbial specialists in high-altitude forest soils:environmental sensitivity and ecological significance

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Frontiers of Environmental science & Engineering 2025年第3期19卷 57-71页

作者： Nan Yang Chenni Zhou Yi Li Yujie Deng College of Hydrology and Water Resources Hohai UniversityNanjing 210098China Research Center of Agricultural Economy School of EconomicsSichuan University of Science and EngineeringYibin 644000China Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education College of EnvironmentHohai UniversityNanjing 210098China Institute of Science and Technology Information Research of Xizang Autonomous Region Lhasa 850000China

Microorganisms are essential contributors to the forest ecosystems of the Qinghai-Xizang Plateau,encompassing generalists,intermediates,and *** the characteristics and drivers of these microbial sub-communities across varying elevations is essential for understanding their ecological functions in high-altitude forest *** study examines the diversity patterns,assembly processes,environmental adaptations,and potential functions of bacterial and fungal subcommunities along an elevation gradient from 3900 m to the timberline on Shergyla Mountain,*** findings revealed notable differences between low and high elevations in the diversity and composition of microbial *** to neutral and null models,generalists,characterized by the widest niche width and highest migration rates,were primarily influenced by stochastic processes(71.9%).In contrast,deterministic factors,including homogeneous and variable selection,exerted a stronger effect on the assembly of specialists(51.0%).Elevation and nutrient availability emerged as key environmental drivers shaping microbial sub-communities,particularly for specialists,while generalists experienced fewer constraints from environmental *** analysis further demonstrated that habitat specialists occupy central positions within microbial networks,playing a pivotal role in maintaining network ***,nitrogen cycling genes—specifically nifH,amoA,nirS and nosZ—exhibited a U-shaped distribution across the elevation gradient and showed a substantial correlation(p<0.05)with the Chao1 and Shannon indices of bacterial *** results enhance our knowledge of microbial community dynamics and underscore the crucial ecological role of microbial specialists in the ecosystems of high-altitude forests.

关键词： Qinghai-Xizang Plateau Elevation gradient Microbial communities Generalists and specialists Nitrogen cycling genes

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Early Opportunities for Onshore and Offshore CCUS Deployment in the Chinese Cement Industry

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Engineering 2025年第3期46卷 348-362页

作者： Jing-Li Fan Yifan Mao Kai Li Xian Zhang Center for Sustainable Development and Energy Policy Research(SDEP) School of Energy and Mining EngineeringChina University of Mining and TechnologyBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyBeijing 100083China The Administrative Centre for China’s Agenda 21(ACCA21) Ministry of Science and Technology(MOST)Beijing 100038China

The promotion of deep decarbonization in the cement industry is crucial for mitigating global climate change,a key component of which is carbon capture,utilization,and storage(CCUS)*** its importance,there is a lack of empirical assessments of early opportunities for CCUS implementation in the cement *** this study,a comprehensive onshore and offshore source–sink matching optimization assessment framework for CCUS retrofitting in the cement industry,called the SSM-Cement framework,is *** framework comprises four main modules:the cement plant suitability screening module,the storage site assessment module,the source–sink matching optimization model module,and the economic assessment *** applying this framework to China,919 candidates are initially screened from 1132 existing cement ***,603 CCUS-ready cement plants are identified,and are found to achieve a cumulative emission reduction of 18.5 Gt CO_(2) from 2030 to 2060 by meeting the CCUS feasibility conditions for constructing both onshore and offshore CO_(2) transportation *** levelized cost of cement(LCOC)is found to range from 30 to 96(mean 73)USD·(t cement)^(-1),while the levelized carbon avoidance cost(LCAC)ranges from^(-5) to 140(mean 88)USD·(t CO_(2))^(-1).The northeastern and northwestern regions of China are considered priority areas for CCUS implementation,with the LCAC concentrated in the range of 35 to 70 USD·(t CO_(2))^(-1).In addition to onshore storage of 15.8 Gt CO_(2) from 2030 to 2060,offshore storage would contribute 2.7 Gt of decarbonization for coastal cement plants,with comparable LCACs around 90 USD·(t CO_(2))^(-1).

关键词： Cement industry Carbon capture,utilization,and storage Levelized cost of cement Source-sink matching Offshore storage continental shale oil

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An in-situ biochar-enhanced anaerobic membrane bioreactor for swine wastewater treatment under various organic loading rates

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Journal of Environmental sciences 2024年第12期146卷 304-317页

作者： Nianwen Chen Xinbo Zhang Qing Du Huizhong Wang Zhiwen Wang Junzhi Ren Hongxia Li Wenshan Guo Huu Hao Ngo Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess School of Environmental and Municipal EngineeringTianjin Chengjian UniversityTianjin 300384China Tianjin Key Laboratory of Aquatic Science and Technology Tianjin Chengjian UniversityTianjin 300384China Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering(Ministry of Education) SynBio Research PlatformCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Department of Biochemical EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Tianjin Caring Technology Development Co. Ltd.Tianjin 300381China Centre for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneySydneyNSW 2007Australia

A biochar-assisted anaerobic membrane bioreactor(BC-AnMBR)was conducted to evaluate the performance in treating swine wastewater with different organic loading rates(OLR)ranging from 0.38 to 1.13 kg-COD/(m3.d).Results indicated that adding spent coffee grounds biochar(SCG-BC)improved the organic removal efficiency compared to the conventional AnMBR,with an overall COD removal rate of>95.01%.Meanwhile,methane production of up to 0.22 LCH4/gCOD with an improvement of 45.45%was achieved under a high OLR of 1.13 kg-COD/(m3.d).Furthermore,the transmembrane pressure(TMP)in the BC-AnMBR system was stable at 4.5 kPa,and no irreversible membrane fouling occurred within 125 *** community analysis revealed that the addition of SCG-BC increased the relative abundance of autotrophic methanogenic archaea,particularly Methanosarcina(from 0.11%to 11.16%)and Methanothrix(from 16.34%to 24.05%).More importantly,Desulfobacterota and Firmicutes phylum with direct interspecific electron transfer(DIET)capabilities were also enriched with autotrophic *** of the electron transfer pathway showed that the concentration of c-type cytochromes increased by 38.60%in the presence of SCGBC,and thus facilitated the establishment of DIET and maintained high activity of the elec-tron transfer system even at high *** short,the BC-AnMBR system performs well under various OLR conditions and is stable in the recovery energy system for swine wastewater.

关键词： Biochar Microbial community Anaerobic membrane bioreactor Organic loading rates Methane production

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Dry basal plane graphene wrappings on spherical nickel-rich oxide layered particles for lithium-ion batteries

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Journal of Energy Chemistry 2025年第5期104卷 10-19页

作者： Van-Chuong Ho Thanh N.Huynh Thi Huong Pham Hyun-seung Kim Hun-Gi Jung Ki Jae Kim Seung-Min Oh Young-Jun Kim Junyoung Mun School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySeobu-roJangan-guSuwon-siGyeonggi-do 2066Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan UniversitySuwonRepublic of Korea Advanced Batteries Research Center Korea Electronics Technology Institute25Saenari-roSeongnam 13509Republic of Korea Energy Storage Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea KIST-SKKU Carbon-Neutral Research Center Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea Battery Cell Development Team 1 Research&Development DivisionHyundai Motor Company150Hyundaiyeonguso-roNamyang-eupHwaseong-siGyeonggi-do 18280Republic of Korea Department of Nano Engineering Sungkyunkwan UniversitySuwonRepublic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan University2066Seobu-roJangan-guSuwon-siGyeonggi-do 16419Republic of Korea

Particle-to-particle dry graphene coatings on Ni-rich layered oxide materials are proposed for highenergy lithium-ion batteries(LIBs)to mitigate the inherent and engineering challenges related to the electrochemically fragile surfaces,as well as limiting electrode thickness and *** a shear stress-based coating process without supplementary solvent or heat treatment,graphene sheets derived from graphene powder are applied onto the surface of spherical LiNi_(0.89)Co_(0.055)Mn_(0.055)O_(2)(NCM)*** process achieves a coating thickness equivalent to or fewer than 10 layers of graphene and exposes the basal *** graphene-coated material increases particle hardness and mitigates degradation caused by inter-particle pressure,enabling the formation of high-density electrodes without *** the absence of additional carbon-conducting agents for the high-density composite electrode with a density of 4.0 g cm^(-3),it significantly enhances rate capability,demonstrating more than 5 times improvement by achieving 149.4 mAh g^(-1)at 2 C compared to the bare sample(28.9 mAh g^(-1)).Furthermore,the dry graphene coating enables the high areal capacity of 6.98 mAh cm^(-2).By exposing the basal plane of the graphene coating,the process enhances chemical stability,effectively inhibiting side reactions at the interface and mitigating cycle degradation.

关键词： Dry graphene coating Basal-plane coating Particle-to-particle High electrical conductivity High areal capacity

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Recent advancements in butyric acid research: Health effects， sources， and high-efficiency bioconversion production strategies

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Food science and Human Wellness 2024年

作者： Zhipeng Zhou Xinyu Wang Yujie Zhong Shengbao Cai Zhijia Liu Yanfei Wang Xiaosong Hu Tao Wang Junjie Yi Faculty of Food Science and Engineering， Kunming University of Science and Technology Yunnan Engineering Research Center for Fruit & Vegetable Products International Green Food Processing Research and Development Center of Kunming City College of Food Science and Nutritional Engineering， China Agricultural University

Butyric acid， a representative short-chain fatty acid (SCFA)， has gained considerable attention due to its noteworthy health benefits and widespread application. Nonetheless， the majority of commercially available butyric acid is currently synthesized through environmentally harmful chemical synthesis methods， which pose a significant obstacle to the development of the butyric acid industry. Therefore， there is a need to develop cost-effective， efficient， and environmentally friendly methods for butyric acid production. This review commences with a systematic evaluation of the health effects and mechanisms of action of butyric acid. Subsequently， it outlines the advantages and disadvantages of different sources of butyric acid， including chemical synthesis and biosynthesis， along with their development trends. Finally， the review delves into high-efficiency strategies to enhance butyric acid production through targeted biosynthesis. This review not only serves as a valuable reference for researchers and practitioners interested in the diverse aspects of butyric acid but also offers insights into future trends in the development of butyric acid.

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High-Entropy Oxide of (BiZrMoWCeLa)O2 as a Novel Catalyst for Vanadium Redox Flow Batteries

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ACS Applied Materials and Interfaces 2024年第8期16卷 10019-10032页

作者： Demeku, Aknachew Mebreku Kabtamu, Daniel Manaye Chen, Guan-Cheng Ou, Yun-Ting Huang, Zih-Jhong Hsu, Ning-Yih Ku, Hung-Hsien Wang, Yao-Ming Wang, Chen-Hao Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei106335 Taiwan Department of Chemistry Debre Berhan University Debre Berhan000000 Ethiopia Chemistry Division National Atomic Research Institute Taoyuan325207 Taiwan Maritime Innovation & Industry Promotion Department Metal Industries Research & Development Centre Kaohsiung811160 Taiwan Research Center National Cheng Kung University Tainan701401 Taiwan Center of Automation and Control National Taiwan University of Science and Technology Taipei106335 Taiwan

In this study, new fluorite high-entropy oxide (HEO), (BiZrMoWCeLa)O2, nanoparticles were produced using a surfactant-assisted hydrothermal technique followed by calcination and were used as novel catalytic materials for vanadium redox flow batteries (VRFBs). The HEO calcined at 750 °C (HEO-750) demonstrates superior electrocatalytic activity toward V3+/V2+ and VO2+/VO2+ redox couples compared to those of cells assembled with other samples. The charge-discharge tests further confirm that VRFBs using the HEO-750 catalyst demonstrate excellent Coulombic efficiency, voltage efficiency, and energy efficiency of 97.22, 87.47, and 85.04% at a current density of 80 mA cm-2 and 98.10, 74.76, and 73.34% at a higher current density of 160 mA cm-2, respectively. Moreover, with 500 charge-discharge cycles, there is no discernible degradation. These results are attributed to the calcination heat treatment, which induces the formation of a new single-phase fluorite structure, which facilitates the redox reactions of the vanadium redox couples. Furthermore, a high surface area, wettability, and plenty of oxygen vacancies can give more surface electroactive sites, improving the electrochemical performance, the charge transfer of the redox processes, and the stability of the VRFBs’ electrode. This is the first report on the development of fluorite structure HEO nanoparticles in VRFBs, and it opens the door to further research into other HEOs. © 2024 The Authors. Published by American Chemical Society.

关键词： Entropy

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Method for the real-time detection of tomato ripeness using a phenotype robot and RP-YolactEdge

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 200-210页

作者： Yuanqiao Wang Wenbo Gou Chuanyu Wang Jiangchuan Fan Weiliang Wen Xianju Lu Xinyu Guo Chunjiang Zhao College of Information Engineering Northwest A&F UniversityYangling 712100ShaanxiChina China National Engineering Research Center for Information Technology in Agriculture(NERCITA) Beijing 100097China Beijing Key Laboratory of Digital Plant Beijing Research Center for Information Technology in AgricultureBeijing 100097China Beijing PAIDE Science and Technology Development Co. Ltd.Beijing 100097China

In order to address the challenge of non-destructive detection of tomato fruit ripeness in controlled environments,this study proposed a real-time instance segmentation method based on the edge *** method combined the principles of phenotype robots and machine vision based on deep learning.A compact and remotely controllable phenotype detection robot was employed to acquire precise data on tomato *** video data were then processed by using an efficient backbone and the FeatFlowNet structure for feature extraction and analysis of key-frame to non-key-frame mapping from video *** enhance the diversity of training datasets and the generalization of the model,an innovative approach was chosen by using random enhancement ***,the PolyLoss optimization technique was applied to further improve the accuracy of the ripeness multi-class detection *** validation,the method of this study achieved real-time processing speeds of 90.1 fps(RTX 3070Ti)and 65.5 fps(RTX 2060 S),with an average detection accuracy of 97%compared to manually measured *** is more accurate and efficient than other instance segmentation models according to actual testing in a ***,the results of this research can be deployed in edge devices and provide technical support for unmanned greenhouse monitoring devices or fruit-picking robots in facility environments.

关键词： instance segmentation phenotype robot tomato greenhouse-based plant phenotyping ripeness detection

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Cooperative Strategy for Aircraft Defense Line-of-Sight Guidance in Three-Dimensional Space 41

Cooperative Strategy for Aircraft Defense Line-of-Sight Guid...

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第41届中国控制会议

作者： Gaoyong Tan Hongbing Luo Fei Liao Xinghu Wang Haibo Ji Department of Automation University of Science and Technology of China China Aerodynamics Research and Development Center

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

This paper presents a line-of-sight guidance strategy based on static optimization for a Target aircraft and a Defender missile to cooperatively combat an Attacker *** three vehicles are modeled by nonlinear dynamics,and the engagement kinematics of the proposed guidance strategy is established in three-dimensional *** on the guidance laws obtained by sliding mode control,a cooperative strategy is obtained for the Target-Defender team by virtue of static *** is vindicated by numerical simulations that the cooperative strategy can minimize the lateral accelerations of the Target and the Defender while completing the line-of-sight guidance interception.

关键词： Cooperative strategy active aircraft defense line-of-sight guidance static optimization

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Structural parameters and molecular model of Shendong subbituminous coal

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Chinese Journal of Chemical Engineering 2024年第12期76卷 124-134页

作者： Xiaoping Su Ning Li Longjian Li Reyila Tuerhong Yongchong Yu Ping Zhang Qiong Su Tao Shen Ming Sun Xiaoxun Ma Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission Gansu Provincial Biomass Function Composites Engineering Research CenterKey Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu ProvinceGansu Province Research Center for Basic Sciences of Surface and Interface ChemistryCollege of Chemical EngineeringNorthwest Minzu UniversityLanzhou 730124China School of Chemical Engineering Northwest UniversityInternational Science&Technology Cooperation Base of MOST for Clean Utilization of Hydrocarbon ResourcesChemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei EnergyShaanxi Research Center of Engineering Technology for Clean Coal ConversionCollaborative Innovation Center for Development of Energy and Chemical Industry in Northern ShaanxiXi'an 710069China

Coal has a highly complex chemical structure,similar to polymers,coal is a macromolecular structure composed of a large number of“similar compounds”,which is called the basic structural *** coal structure is the basis of its transformation and ***(SD)coal was analyzed by FTIR,XRD,XPS,and *** results show that SD coal normalized structure formula is C_(100)H_(68.5)O_(35.7)N_(1.2)S_(0.2)and the average number of aromatic rings is 1.98.-CH_(2)-content accounts for about 82%in aliphatic CeH region,and the ratio of ether bond CeO,aromatic ether C-O and C=O is about 2:1:11 in oxygen-containing functional group *** d_(002),L_(C),L_(a)and N_(C)of S_(D)coal microcrystalline structure parameters are 0.1832 nm,1.4688 nm,2.0852 nm and 9.017,*** carbon and aliphatic carbon ratios of SD coal are 55.67%and 29.97%,aromatic cluster size and average methylene chain length are 0.224 and *** on these structural parameters,molecular model of SD coal was constructed with^(13)C SSNMR experimental spectra as a *** model was constructed with an atom composition of C_(214)H_(214)O_(49)N_(2)S.

关键词： Subbituminous coal Structural parameters ^(13)C CP/MAS SSNMR Molecular model

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