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A novel labor-saving strategy for hybrid rice seed production 认领 引用
1
作者 Quan Gan Ran Zhou +4 位作者 Hao Yu Cuixiang Lin Bin Teng Fengshun Song Dahu Ni 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第6期2623-2626,共4页
Highlights Os GATA15 plays an important role in regulating the growth and development of the rice fiag leaf.The small flag leaf restorer line NP27 offers a novel breeding strategy and germplasm resource for hybrid ric... Highlights Os GATA15 plays an important role in regulating the growth and development of the rice fiag leaf.The small flag leaf restorer line NP27 offers a novel breeding strategy and germplasm resource for hybrid rice seed production without leaf-cutting.Rice is one of the main food crops globally.With the continuous increase in population and the decrease in effective arable land area,increasing rice yield is necessary to ensure the food supply(Wing et al.2018). 展开更多
关键词 small flag leaf restorer line breeding strategy food crops hybrid rice seed production germplasm resource labor saving strategy os gata
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Thoughts on Agricultural Practice of the Party's Governance Strategy for Xinjiang in the New Era:Based on Advantageous and Characteristic Industry and Brand Mark-related Intellectual Property 认领 引用 被引量：2
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作者 Zhiguo SUN Dongbing XING +2 位作者 Meng LIU Yulan BAI Jinjin WANG 《Asian Agricultural Research》 2026年第5期1-14,共14页
This paper examines Xinjiang's advantageous and characteristic agriculture from grain production functional zones,important agricultural product protection zones,characteristic agricultural product advantageous zo... This paper examines Xinjiang's advantageous and characteristic agriculture from grain production functional zones,important agricultural product protection zones,characteristic agricultural product advantageous zones,hometowns of specialty products,One Village One Product,regional public brands,famous,special,premium,and novel agricultural products,characteristic agricultural products,agricultural product quality and safety,Taste of Xinjiang,Good Grain and Oil,and industrial clusters.Besides,from geographical indications,design patents(for packaging and containers),and trademarks,this paper studies the autonomous region's brand mark-related agricultural intellectual property.It also analyzes the main problems in the development of its brand agriculture,and puts forward suggestions such as building a diversified food supply system,improving the protection of geographical indication intellectual property rights,promoting the creation of design patents for packaging and containers,strengthening the registration of regional public trademarks and Madrid international trademarks,and carrying out targeted counterpart assistance to Xinjiang for characteristic agriculture. 展开更多
关键词 Advantageous and characteristic agriculture Agricultural intellectual property Targeted counterpart assistance to Xinjiang the Party's Governance Strategy for Xinjiang
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Analysis and Optimization of Diesel Injection Strategy to Minimize Unburned Hydrogen in a Hydrogen–Diesel Dual-Fuel Medium-Speed Marine Engine 认领 引用 被引量：1
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作者 Peilin Zhou Binteng Gu Ning Chen 《哈尔滨工程大学学报（英文版）》 CSCD 2026年第3期775-786,共12页
To advance shipping decarbonization,hydrogen is increasingly recognized as a viable zero-carbon fuel.Currently,a hydrogen/diesel dual-fuel medium-speed engine represents an optimal prime mover for ships.However,challe... To advance shipping decarbonization,hydrogen is increasingly recognized as a viable zero-carbon fuel.Currently,a hydrogen/diesel dual-fuel medium-speed engine represents an optimal prime mover for ships.However,challenges such as the large cylinder dimensions of marine medium-speed engines and the low temperatures at the combustion chamber walls can hinder efficient flame propagation,leading to the emission of unburnt hydrogen.This not only diminishes the engine's mechanical output but also poses significant safety risks.To address these issues,this study employs computational fluid dynamics(CFD)modelling to explore optimal diesel injection strategies that minimize unburnt hydrogen emissions in such engines.Specifically,this research examines the impacts of the diesel injection start angle,spray tilt angle,and injection duration on hydrogen combustion efficiency.The findings reveal that fine-tuning injection parameters substantially lower the fraction of unburned hydrogen.Adjusting the injection timing from 9.5°CA BTDC to 49.5°CA BTDC decreases the unburnt hydrogen fraction from 50%to 3%.Furthermore,modifying the spray tilt angle from 75.5°to 55.5°further decreases it to 2%,while shortening the injection duration from 35°CA to 34°CA achieves the lowest unburnt hydrogen fraction at just 1%.These results underscore the effectiveness of diesel injection strategies in optimizing the combustion in hydrogen/diesel dual-fuel marine medium-speed engines,offering a pathway for similar applications in the sector. 展开更多
关键词 Hydrogen/diesel dual-fuel Marine medium-speed engine Diesel injection strategy Computational fluid dynamics(CFD) Unburnt hydrogen emission
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Thoughts on the Agricultural Practice of the Party s Governance Strategy for Xinjiang in the New Era:Based on the Traditional Knowledge and Cultural Heritage 认领 引用 被引量：1
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作者 Zhiguo SUN Dongbing XING +2 位作者 Yulan BAI Jinjin WANG Meng LIU 《Asian Agricultural Research》 2026年第6期1-12,共12页
Traditional knowledge, biological genetic resources and folk literature and art are intellectual property rights of cultural heritage that can be shared by regional groups without time limit. This paper studies the tr... Traditional knowledge, biological genetic resources and folk literature and art are intellectual property rights of cultural heritage that can be shared by regional groups without time limit. This paper studies the traditional knowledge and cultural heritage of Xinjiang agriculture from the aspects of traditional knowledge, important agricultural heritage system, intangible cultural heritage, biological genetic resources, tangible cultural heritage, frontier development and defense culture, and cultural tourism resources. It analyzes the main problems existing in the protection and inheritance of them, and puts forward suggestions such as inheriting and sharing intellectual property rights of cultural heritage, improving the protection system of biological germplasm resources, establishing national-level cultural ecological protection (experimental) zones, promoting agricultural science and technology cultural exchanges, creating Xinjiang's characteristic Great Wall culture, deeply integrating "agriculture+culture+tourism", building national and autonomous region cultural parks, and dynamically inheriting agricultural cultural heritage. 展开更多
关键词 Traditional knowledge Biological genetic resources Agricultural intellectual property Cultural enrichment of Xinjiang The Party's governance strategy for Xinjiang
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Improving Cyclic Positioning Strategy Accuracy of UWB System in Complex Underground Environments 认领 引用
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作者 Bo Cao Mingrui Jiang +3 位作者 Shibo Wang Menglan Li Linghua Cui Biyong Xu 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2026年第4期926-938,共13页
The high-precision automatic positioning technology of the shearer is crucial for the automated and unmanned mining.However,the existing localization approaches commonly deliver inaccurate,unsatisfactory and unreliabl... The high-precision automatic positioning technology of the shearer is crucial for the automated and unmanned mining.However,the existing localization approaches commonly deliver inaccurate,unsatisfactory and unreliable results.In response to this challenge,we propose a novel cyclic positioning strategy to automatically migrate the anchor nodes group(ANG)after the completion of the current cutting operation,thereby achieving long-term period positioning.Meanwhile,we design an innovative technique that appropriately incorporates the shrinkage estimation method based on the minimum mean square error criterion(MMSEC),the improved diversity-guided quantum particle swarm optimization(QPSO),and the extended Kalman filter(EKF)to enhance the localization accuracy of the ultra-wideband(UWB)system in each cycle positioning.Firstly,the cycle positioning strategy and the calculation method of the ANG coordinate position are proposed at the end of fully mechanized mining face.Secondly,the MMSEC method is developed by taking into account of the large measurement noise in the underground environments,and the improved diversity-guided QPSO method is implemented to optimize the result of MMSEC approach.Subsequently,the EKF is executed to suppress the influence of distance residuals on the positioning accuracy and further refine the final estimation accuracy.Lastly,the experimental investigation is performed to evaluate the effectiveness of the proposed cyclic positioning strategy.The experimental results sufficiently demonstrate that the developed MMSEC-QPSO-EKF technique significantly enhances localization accuracy and substantially outperforms the conventional methods,which is capable of achieving better estimation accuracy in each cycle positioning.The proposed cyclic positioning strategy can be successfully implemented,and the achieved accuracies are less than 0.2 m as the ANG is migrated three times,showcasing outstanding localization performance and robustness. 展开更多
关键词 Autonomous positioning diversity-guided quantum particle swarm optimization (QPSO) migration strategy minimum mean square error criterion (MMSEC) underground environment
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Performance degradation and maintenance optimization strategy of rolling bearings based on data fusion and adaptive partition 认领 引用
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作者 Hong-Chuan Cheng Xin-Hai Li +3 位作者 Guo-Hui Ma Yu Cui Zhi-Wu Shang Xia-Fei Shi 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第2期178-194,共17页
The traditional method of performance degradation prediction and maintenance of rolling bearings only considers a single sensor signal,which makes it difficult to automatically partition degradation stages and prone t... The traditional method of performance degradation prediction and maintenance of rolling bearings only considers a single sensor signal,which makes it difficult to automatically partition degradation stages and prone to over-detection.A new method of performance degradation evaluation and maintenance of rolling bearings based on data-level fusion,adaptive health state partitioning,and state maintenance is proposed.Firstly,considering the degradation and impact in the process of bearing deterioration,the multi-sensor signals are dynamically weighted to achieve data-level fusion.Secondly,a bearing health index was established based on fast spectral correlation,Wasserstein distance,and linear rectification techniques.On this basis,by combining the Bayesian information criterion and the elbow rule,the precise division of rolling bearing health state is realized through hidden Markov model regression.Then,random forest was used to classify and predict the data to verify the validity of the proposed data fusion method and health indicator.Finally,condition-based maintenance strategy based on the fourth moment,stress-strength interference model,and Gamma process is proposed to avoid excessive detection and reduce maintenance costs.Through accelerated degradation experiments and field validation tests on the rolling bearing test data set of Xi’an Jiaotong University and FEMTO(PRONOSTIA),the accuracy and superiority of the proposed method in the prediction and maintenance of bearing health state are verified. 展开更多
关键词 Rolling bearing Data fusion Gamma process Adaptive partition Maintenance strategy
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Achieving High Power Density in Paper-based Piezoelectric Nanogenerators through Dual-phase BCZT Doping Strategy 认领 引用
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作者 WANG Siting SUN Zixiong +3 位作者 LIU Xinyingl HAN Peiqiao WANG Xiuli ZHANG Sufeng 《无机材料学报》 SCIE EI CAS CSCD 北大核心 2026年第1期129-140,共12页
Development of high performance,flexible piezoelectric nanogenerators(PENGs)is critical for advancing self-powered sensing and microelectronic applications.In this study,a hydrogen-bond substitute strategy was employe... Development of high performance,flexible piezoelectric nanogenerators(PENGs)is critical for advancing self-powered sensing and microelectronic applications.In this study,a hydrogen-bond substitute strategy was employed to fabricate a multi-layer PENG based on a cellulose/polyvinylidene fluoride(PVDF)blend film matrix,incorporating multi-phase BCZT(0.1BaZr0.2Ti0.8O3-0.9Ba0.7Ca0.3TiO3)ceramic fillers.Structural characterization via SEM and TEM revealed that an intricate hydrogen-bond network facilitated the uniform dispersion of ceramic fillers within the composite film’s sub-layers.In order to study the effect of filler distribution on piezoelectric performance,the single-and double-layer composite films with varying BCZT configurations were produced and evaluated.The results demonstrated that double-layer PENGs exhibit significantly enhanced electrical output compared to their single-layer counterparts,with the D-L3H7 configuration achieving an open circuit voltage(VOC)of 23.13 V and a short circuit current(ISC)of 8.32μA.This enhancement is attributed to increased inter-layer interfaces,which effectively suppressed charge injection and migration,leading to improved charge density.Additionally,the presence of sharp tipped hexagonal tetragonal phase nanoparticles induced an electric field enhancement effect,further optimizing performance. 展开更多
关键词 piezoelectric nanogenerator cellulose BCZT hydrogen bond engineering strategy
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Hydroxyl Self-Trapping Strategy Enables Electrocatalysis at Ampere-Level Current Densities:Kinetics-Driven Lattice Oxygen Activation for Cl--Rich Alkaline Water Electrooxidation 认领 引用
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作者 Rui Liu Hui Kan +5 位作者 Xiangdong Ma Shan Yue Jiayi Gao Mingjing Zhao Haijiao Xie Xiaohong Xia 《Carbon Energy》 SCIE EI CAS CSCD 2026年第2期245-258,共14页
The development of electrocatalysts that both work effectively at industrial current density and resist chloride ion(Cl-)corrosion remains a key challenge for hydrogen production from Cl--rich alkaline water.Her... The development of electrocatalysts that both work effectively at industrial current density and resist chloride ion(Cl-)corrosion remains a key challenge for hydrogen production from Cl--rich alkaline water.Herein,we report a CrOx-engineered nickel-based oxide catalyst(FeCoCrOx/NF)that achieves exceptional activity and stability through a dual-functional interfacial mechanism.Combing in situ Raman spectroscopy,18O isotopic labeling,and electrochemical analysis,we demonstrate that the oxygen evolution reaction follows a lattice oxygen-mediated mechanism.The CrOxlayer selectively adsorbs hydroxide ions,forming a dynamic interfacial barrier that electrostatically repels Cl-ingress,thereby mitigating Cl-corrosion.Through enthalpy-based analysis,we demonstrate that electronic redistribution via Cr-O-Fe bonding increases the vacancy formation energy of Fe,thereby suppressing its dissolution.In alkaline electrolyte containing 0.5 M Cl-(1.0 M KOH),the catalyst is operating continuously for 1400 h at an industrial current density of 1000 mA cm-2.Furthermore,the catalyst retains 99.5%of its initial activity under fluctuating current density(100-1000 mA cm-2),demonstrating robustness required for industrial electrolyzers.This study establishes a paradigm for designing corrosion-resistant electrocatalysts through the synergistic modulation of interfacial ion selectivity and bulk lattice oxygen activation,advancing the application of green hydrogen production in Cl--rich alkaline water. 展开更多
关键词 Cl−‐rich alkalinewater electrooxidation lattice oxygen lewis acid self‐trapping strategy
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Advances in metal oxide catalysts for efficient VOCs oxidation:Synthesis strategy and catalytic mechanism 认领 引用
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作者 Fan Dang Chunli Ai +5 位作者 Chi Ma Zeyu Jiang Jicheng Liu Mingjiao Tian Mingzhuo Zhang Chi He 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第2期97-123,共27页
The severe hazard of volatile organic compounds(VOCs)makes their decomposition technology a key topic research.Catalytic oxidation is an efficient and environmentally friendly strategy for removing VOCs.The metal oxid... The severe hazard of volatile organic compounds(VOCs)makes their decomposition technology a key topic research.Catalytic oxidation is an efficient and environmentally friendly strategy for removing VOCs.The metal oxide catalysts dominate VOCs oxidation reactions,owing to their cost-effectiveness,robust redox properties,tunable crystal structures,and excellent operational stability.Thus,designing high-performance metal oxide catalysts is important.This review systematically summarized the recent advances in constructing highly efficient active metal oxides,with emphasis on representative preparation method,the structure performance relationship,and the reaction mechanism of different types VOCs.Finally,the remaining challenges for creating metal oxide catalysts in practical applications are discussed. 展开更多
关键词 Metal oxide catalysts Volatile organic compounds oxidation Synthesis strategy Structure modulation Reaction mechanism
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An optimization strategy for complex distillation configurations to escape local optima and analysis of its occurrence 认领 引用
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作者 Chenghao Xing Yanyang Wu +3 位作者 Xiaolong Zhou Bin Wu Kui Chen Lijun Ji 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第2期333-347,共15页
Common optimization methods for enhanced distillation include sequential iteration methods and metaheuristic algorithms,which typically face tedious computation and are easily trapped into local minimum.Therefore,it i... Common optimization methods for enhanced distillation include sequential iteration methods and metaheuristic algorithms,which typically face tedious computation and are easily trapped into local minimum.Therefore,it is essential to develop a strategy that enables simultaneous evaluation of multiple solutions.In this paper,a global optimization framework integrating MATLAB and Aspen Plus for liquid-only extractive dividing wall column(LEDWC)and conventional extractive distillation(CED)systems is proposed to enhance both computational efficiencyand search robustness.All possible combinations of key variables,including distillate and entrainer flowrates,feed stage,and total stage numbers,etc.-are considered systematically.They are arranged in full permutation within a sufficiently wide range.The permutation is then divided into multiple matrices by MATLAB.They are sequentially input into sensitivity analysis module in Aspen Plus through communication with MATLAB.Each group of integrated variables which satisfiesthe given constraints is used for the total annual cost(TAC)calculation.The mixture of ethanol(EtOH)and water,which can form a minimum boiling azeotrope(89.6%(mol)EtOH)at 100 kPa,is taken as a study system.Five different feed mixtures are taken for comprehensive analysis.The TAC profilesas a function of the total number of stages for the left column(NCL)in the LEDWC clearly indicate that the proposed strategy successfully identifiedmultiple local minima,demonstrating its capability to detect and escape suboptimal regions in highly nonlinear systems.The existence of local minima can be attributed to the coupling interaction between structural and process variables,as well as the influenceof flowcharacteristics within the column.This work indicates that as NCL increases,there is a competitive effect between the decrease in refluxratio for the left column(RRCL)and the increase in reboiler temperature,leading to fluctuationsin energy consumption;while changes in the distillation flowrate for the left column cause nonlinear changes in RRCL and the liquid flowrate between the left and right columns,further promoting the emergence of multiple local minima during the TAC optimization process.Additionally,analysis of the flowcharacteristics within the column revealed that the back-mixing phenomenon commonly observed in CED is absent in LEDWC,suggesting that back-mixing may be an important factor contributing to the more frequent occurrence of local optima. 展开更多
关键词 Global optimization strategy Liquid-only transfer extractive dividing wall column Back-mixing Coupling Local minima
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Synthesis and crystal structures of Co(Ⅱ)/Cu(Ⅱ)coordination polymers based on solvent and ligand concentration regulation strategy 认领 引用
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作者 SUN Yinxia LIU Liping +7 位作者 BAI Xue SUN Yu SUN Wanhong DENG Zhepeng CHEN Jianghai WANG Jianjun XU Li ZHANG Shuzhen 《无机化学学报》 SCIE CAS CSCD 北大核心 2026年第2期340-354,共15页
Four distinct coordination polymers(CPs)were successfully synthesized by altering solvent types and adjusting ligand concentrations,and their crystal structures were investigated.[Co(L)(FDCA)(H2O)2]·0.5H_(2... Four distinct coordination polymers(CPs)were successfully synthesized by altering solvent types and adjusting ligand concentrations,and their crystal structures were investigated.[Co(L)(FDCA)(H2O)2]·0.5H2O(1)was synthesized as a 2D structure using Coas the metal source,methanol‑water(4∶6,V/V)as the solvent,and specific concentrations of 2,5‑furandicarboxylic acid(H2FDCA)and 1,3,5‑triimidazole benzene(L).Adjusting to pure water and lowering the concentration of L yielded the 1D chain structure of[Co(HL)2(H2O)2](FDCA)2·6H2O(2).Using Cu(Ⅱ)as the metal source,methanol/water(9∶1,V/V)as the solvent,and specific concentrations of L and H2FDCA,the 1D chain structure of[Cu(L)(FDCA)(H2O)]·2H2O(3)was synthesized.Upon increasing the concentrations of L and H2FDCA,and switching the solvent to pure water,the 1D chain structure of[Cu(HL)2(H2O)2](FDCA)2·6H2O(4)was obtained.This shows that changing the solvent and ligand concentrations can affect the structural changes of CPs.In addition,the solid‑state photoluminescence of CPs 1‑4 at room temperature was studied,and their morphological changes were observed via scanning electron microscopy.Density functional theory calculations revealed that the negative charge concentrates on the O and N atoms of the ligand,facilitating ligand‑metal ion coordination.CCDC:2403934,1;2403935,2;2403936,3;2403938,4. 展开更多
关键词 Co(Ⅱ)/Cu(Ⅱ)coordination polymer crystal structure solvent system ligand concentration regulation strategy
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Amino substitution strategy achieves significant blue shift while preserving high optical anisotropy:A2(H3C3N4S2)2·H2O(A=NH4,K,Rb,Cs) 认领 引用
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作者 Shuang Zhao Fei Jia +5 位作者 Kaibei Zhan Rui-Xi Wang Pengfei Tan Lin Shen Li-Ming Wu Ling Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第3期700-704,共5页
The trithiocyanurate,(H2C3N3S3)-,exhibits a strong optical anisotropy but has a small HOMO-LUMO gap,limiting its application to the higher energy wavelength ranges.Herein,by applying an amino substituti... The trithiocyanurate,(H2C3N3S3)-,exhibits a strong optical anisotropy but has a small HOMO-LUMO gap,limiting its application to the higher energy wavelength ranges.Herein,by applying an amino substitution strategy,we report that 2-amino-4,6-dimercapto-S-triazine,(H3C3N4S2)-,generates a series new compound:A2(H2C3N4S2)2·H2O(NH4,Ⅰ;K-Cs,Ⅱ-Ⅳ).Compound Ⅰ crystallizes in P21,while compoundsⅡ-Ⅳ crystallize in P1.Their experimental optical band gaps(Eg) range from 3.52eV to 3.65eV,corresponding to a blue shift of 30~60 nm compared to those of the trithiocyanuric containing systems.Moreover,the birefringence of all compounds ranges from 0.440 to 0.510,indicating strong anisotropy.Notably,compound Ⅰ(Eg=3.65 eV,Δncalmax=0.510,Δnobv(011)=0.413 at 546 nm) exhibits one of the largest birefringence values among materials with an absorption cutoff edge shorter than 330 nm.The work introduces a new candidate group for preparing optical materials with a desired wide band gap and strong optical anisotropy. 展开更多
关键词 Amino substitution strategy Planarπ-conjugated group Optical anisotropy Birefringence Ultraviolet crystal
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Adaptive power and virtual resistance cooperation control strategy of VSG-based GFM converters for grid transient stability enhancement 认领 引用
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作者 Zhang Wen Liangzhong Yao +4 位作者 Fan Cheng Shuai Liang Junpeng Deng Siyang Liao Beilin Mao 《Global Energy Interconnection》 EI CSCD 2026年第3期489-504,共16页
With the increasing penetration level of renewable energy sources(RES)interfaced with the grids by power electronic converters,the grid forming(GFM)control of converters is recognized as one of the promising solutions... With the increasing penetration level of renewable energy sources(RES)interfaced with the grids by power electronic converters,the grid forming(GFM)control of converters is recognized as one of the promising solutions in dealing with challenges such as grid transient stability enhancement required for future power electronic converter-dominated power grids.However,the physical nature of the limited overcurrent capability of GFM converter constrains its application including grid transient stability enhancement during grid faults.To address this problem,this paper first analyzes the mechanism of grid transient stability and overcurrent of GFM converter during grid faults.Then,an adaptive power and virtual resistance cooperation control strategy of VSG-based GFM converter for grid transient stability enhancement is proposed,which can suppress the overcurrent of the GFM converter and enhance the grid transient stability simultaneously during grid faults.Meanwhile,a detailed quantitative analysis of parameter tuning of the proposed control is conducted,ensuring the robustness of the proposed control strategy in different fault depths and fault duration times.Finally,case studies are simulated in the PSCAD/EMTDC software to verify the effectiveness of the proposed control strategy. 展开更多
关键词 Transient stability control Virtual synchronous generator(VSG) Grid-forming(GFM)converter Current limiting strategy Virtual resistance
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Freeway Emergency Lane Opening Strategy under Accident Conditions Based on Improved Markov Model 认领 引用
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作者 Jiao Yao Pujie Wang +2 位作者 Tianyi Zhang Chenke Zhu Chenqiang Zhu 《Computers, Materials & Continua》 SCIE EI 2026年第6期1745-1763,共19页
In accident scenarios on freeways,traffic congestion,sharp declines in capacity,and the limitations of closed systems where vehicles cannot turn around or exit freely often pose serious challenges.To address these iss... In accident scenarios on freeways,traffic congestion,sharp declines in capacity,and the limitations of closed systems where vehicles cannot turn around or exit freely often pose serious challenges.To address these issues,this study develops an improved Markov Decision Process(MDP)framework for dynamic emergency lane opening.Compared with traditional MDP-based traffic control models,the proposed method integrates three enhancements:Firstly,an explicit action decision space transition mechanism that couples variable speed limits with emergency lane opening decisions;Secondly,vehicle-type-differentiated actions to support fine-grained and adaptive opening strategies;and a redesigned reward function incorporating congestion cost,action cost,rewards earned and penalty received to ensure decision rationality and operational feasibility.Based on this improved structure,the optimal strategy is derived using the value iteration algorithm.Finally,simulation results using SUMO demonstrate that under the innermost-lane accident scenario,the optimal strategy is to first implement“variable speed limits”,followed by“opening the emergency lane to all vehicles”.This approach increases average speed by 10.81%but enlarges the headway between vehicles at the detection cross-section,leading to an 8.79%decrease in vehicle throughput.Under the outermost-lane accident scenario,the optimal strategy is to first implement“variable speed limits”,followed by“opening the emergency lane to HOVs”,which increases average speed by 5.47%while reducing vehicle throughput by 3.13%.These results validate the effectiveness of the proposed model. 展开更多
关键词 Freeway emergency lane opening strategy Markov model variable speed limits high-occupancy vehicles(HOV)
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Motion Strategy and Control Parameters Optimization for an Underwater Glider Based on 3D Dubins Paths 认领 引用
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作者 HOU Dong-bo CAO Wei +1 位作者 WANG Wen-jun WANG Cong 《China Ocean Engineering》 SCIE EI CSCD 2026年第3期604-618,共15页
This research examines the optimization of motion strategy and control parameters for an Autonomous Underwater Glider(AUG)navigating between two points.For scenarios with specified initial position,target position,and... This research examines the optimization of motion strategy and control parameters for an Autonomous Underwater Glider(AUG)navigating between two points.For scenarios with specified initial position,target position,and heading,this study proposes a three-dimensional multimodal path planning methodology based on the 3D-Dubins path,ensuring both task fulfillment and motion feasibility within AUG dynamics constraints.The path planning approach incorporates ocean current interference and utilizes task objectives and control parameters as inputs.It systematically calculates information including horizontal Dubins type,vertical plane motion modes,and turning point depths to generate the path planning solution.The motion control strategy implements initial control parameter values and utilizes depth measurements as evaluation criteria.Through control parameter adjustments,the strategy facilitates tracking of the designated path.This control approach requires minimal feedback information,with computations executable by shore-based facilities,thereby reducing computational and measurement demands on the AUG and enhancing operational reliability.For specified task objectives,multi-objective optimization of control parameters is conducted using the proposed path planning method and motion control strategy,yielding optimized control parameters and corresponding motion control strategies for various operational requirements. 展开更多
关键词 underwater glider Dubins paths motion strategy parameters optimization energy consumption
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Fluorophore integration strategy endowing 3D covalent organic frameworks with dual-mode white light emission 认领 引用
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作者 Jialiang Liu Chengtao Gong +5 位作者 Jinchen Qian Sen Wang Yi Liang Chenglong Guo Yongwu Peng Jun Pan 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期279-283,共5页
The design of covalent organic frameworks(COFs)with strong fluorescence in both solid and solution states present a significant challenge for white-light-emitting diode(WLED)applications,primarily due to the difficult... The design of covalent organic frameworks(COFs)with strong fluorescence in both solid and solution states present a significant challenge for white-light-emitting diode(WLED)applications,primarily due to the difficulty of balancing aggregation-induced emission(AIE)and aggregation-caused quenching(ACQ).Here,we report the synthesis of a 7-fold interpenetrated three-dimensional COF(3D COF)with a pts topology,termed ZJUT-M,constructed by co-condensation of a T4-symmetric monomer with two D2h-symmetric fluorophores exhibiting distinct emission behaviors.ZJUT-M displays robust fluorescence in both solid and solution states,enabling its use in WLEDs.Mechanistic studies reveal that the dual-mode emission is driven by the synergistic integration of high-degree-of-freedom chromophores,which promote AIE emission in the solid state,and conformationally restricted fluorophores,which suppress ACQ effect in solution.These findings provide a strategic pathway for achieving multi-state emissive COFs,opening avenues for their application in advanced optoelectronic devices,including next-generation LEDs. 展开更多
关键词 Three-dimensional covalent organic frameworks Aggregation-induced emission(AIE) Aggregation-caused quenching(ACQ) Fluorophore integration strategy Dual-mode white light emission Next-generation LEDs
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Highly sensitive DUV-SWIR photodetectors by natural flavonoidderivative isomers through a multisite chelation strategy 认领 引用
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作者 Nan Ding Donggang Li +7 位作者 Mingyu Yao Yanqi Liu Hailong Liu Guoqiang Fang Ge Zhu Xiaodong Li Wen Xu Bin Dong 《Opto-Electronic Science》 CAS 2026年第6期1-11,I0001,I0002,共11页
Achieving high crystallization and excellent charge transport in lead halide perovskite is crucial for broadband photodetectors(PDs),but remains a significant challenge.Herein,a series of natural flavonoid-derivative ... Achieving high crystallization and excellent charge transport in lead halide perovskite is crucial for broadband photodetectors(PDs),but remains a significant challenge.Herein,a series of natural flavonoid-derivative isomers with hydroxy and carbonyl groups are applied to modify perovskite PDs.Unlike the single-point coordination or weak van der Waals interactions commonly observed between organic molecules and perovskite,the multiple functional groups in isomers can form stable chelate ring to"lock"Pb2+,enhancing crystal quality,reducing defects density,and improving stability.Especially,quercetin(QC)modified perovskite achieves the outstanding performance stemming from the coordination of its multisite acidic hydroxyl groups,which creates an optimal stereochemical environment for chelation.Moreover,the QC treatment imparts more pronounced n-type behavior of perovskite,optimizing the energy alignment and facilitating interfacial charge extraction,thereby improving the sensitivity of PDs.Consequently,a single deep-ultraviolet-to-short-wavelength-infrared PD is fabricated by combining the QC modified perovskite with In0.53Ga0.47As,showing a detectivity of 2.71×1013Jones and an external quantum efficiency of 189.41%.Furthermore,unencapsulated device retains 98.4%of its initial sensitivity after 50000 ON/OFF cycles.Ultimately,the PD array is constructed for high-resolution pixel-level multispectral imaging. 展开更多
关键词 perovskite broadband photodetectors natural flavonoid-derivative multisite chelation strategy heterostructure detectivity
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Hierarchical Coordinated Optimization Control Strategy for Electricity-Hydrogen DC Microgrid System 认领 引用
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作者 Xinhao Lin Lei Yu +4 位作者 Shuyin Duan Yinliang Liu Lvzerui Yuan Xiao Chen Yiqing Lian 《Energy Engineering》 EI 2026年第6期247-269,共23页
To address the operational challenges posed by renewable energy generation uncertainty and load fluctuations in DC microgrids,this paper proposes a hierarchical coordinated optimization control strategy for electricit... To address the operational challenges posed by renewable energy generation uncertainty and load fluctuations in DC microgrids,this paper proposes a hierarchical coordinated optimization control strategy for electricity-hydrogen hybrid DC microgrids(EH-DC-MG).The strategy aims to leverage the synergistic advantages of hybrid electricity-hydrogen energy storage to simultaneously achieve multiple objectives,including economic system operation,efficient utilization of renewable energy,and reliable power supply.The upper optimization scheduling layer formulates a mixed-integer linear programming model with the objective of minimizing the total system cost,which incorporates equipment operation and maintenance expenses,battery depreciation,penalties for renewable energy curtailment,and power/hydrogen supply shortages.By solving this model,optimal power reference signals are generated for devices.The lower device control layer employs designed DC/DC converter control strategies to ensure fast and accurate tracking of the optimization commands while maintaining DC bus voltage stability.Simulation results demonstrate that the proposed strategy can effectively coordinate electricity-hydrogen energy conversion and storage.Under various typical and extreme scenarios,the system maintains a high renewable energy utilization rate—remaining above 97.572%even under extreme conditions—while keeping the power shortage rate and hydrogen load curtailment rate at low levels.Specifically,under extreme power deficit scenarios,these rates are limited to 2.003%and 5.081%,respectively,which are significantly below the 10%quality constraint threshold,thereby ensuring a high degree of supply reliability.In addition,the DC bus voltage fluctuation is stabilized within 0.37%,far below the 5%safety operation threshold,validating the effectiveness of the control strategy.This study confirms that the proposed hierarchical coordinated optimization control strategy can support electricity-hydrogen hybrid DC microgrids in achieving economical,reliable,and resilient operation,providing a key technical reference for the optimized management of microgrids with high penetration of renewable energy. 展开更多
关键词 Electric-hydrogen DC microgrid coordinated optimization control strategy
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A promising solvent strategy for commercialization of perovskite photovoltaic modules 认领 引用
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作者 Chen Wang Weitao Zhao Guojia Fang 《Science China Materials》 SCIE EI CAS CSCD 2026年第7期4311-4312,共2页
Perovskite photovoltaics(PVs)[1,2]have rapidly emerged as one of the most promising contenders for next-generation solar technology owing to their low production costs,high power conversion efficiencies,and compatibil... Perovskite photovoltaics(PVs)[1,2]have rapidly emerged as one of the most promising contenders for next-generation solar technology owing to their low production costs,high power conversion efficiencies,and compatibility with large-area manufacturing[3–5].However,translating laboratory-scale perovskite cells into commercial photovoltaic modules faces three persistent bottlenecks:the reliance on toxic polar aprotic solvents during fabrication,the difficulty of maintaining film quality and thickness uniformity over square-metre scales,and the lack of operational reliability[6–8].Overcoming these challenges is essential for positioning perovskite modules as an industrially viable and environmentally responsible alternative to incumbent silicon technologies. 展开更多
关键词 photovoltaic modules solvent strategy toxic polar aprotic solvents perovskite photovoltaics film quality commercialization perovskite cells perovskite photovoltaics pvs
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Protection-Strategy-Based Distributed State Estimation for Nonlinear Complex Networks Against Random False Data Injection Attacks 认领 引用
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作者 Jun Hu Bingxin Lei +1 位作者 Raquel Caballero-Águila Hongli Dong 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2026年第7期1657-1672,共16页
This paper addresses the protection-strategy-based distributed state estimation(SE)problem for time-varying nonlinear complex networks,where uncertain inner coupling and random false data injection attacks are conside... This paper addresses the protection-strategy-based distributed state estimation(SE)problem for time-varying nonlinear complex networks,where uncertain inner coupling and random false data injection attacks are considered.Owing to the fact that the measurement signals can be easily injected with false data by potential attackers before being transmitted to the estimator,a novel protection strategy is firstly proposed from the perspective of the defender to mitigate the effects of malicious attacks on the estimation performance.Based on the proposed protection strategy,more suspicious and unreliable measurements received are identified and discarded respectively.Accordingly,the zero-order holder strategy is employed to compensate for the discarded measurements.Subsequently,the purpose of this paper is to design a protection-strategy-based distributed SE scheme such that an optimized upper bound(UB)on the estimation error covariance(EEC)is obtained.Furthermore,a sufficient criterion is provided to guarantee the uniform boundedness of UB on the EEC.Finally,a localization problem involving multiple mobile robots is used to demonstrate the effectiveness and practicality of proposed variance-constrained optimized SE method. 展开更多
关键词 Boundedness analysis protection strategy random
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