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基于改进离散型麻雀搜索算法的配电网恢复重构方法

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智慧电力 2023年第7期51卷 16-22,30页

作者：李浩张禄亮麦章渠季天瑶华南理工大学电力学院广东广州510006

针对传统智能优化算法在恢复重构中搜索空间大、不可行解多,且易早熟收敛、效率低等问题,提出了一种基于改进离散型麻雀搜索算法的配电网恢复重构方法。利用配电网每生成一个环路需断开一个开关来保持其辐射状的思想,采用基于有序环矩... 详细信息

针对传统智能优化算法在恢复重构中搜索空间大、不可行解多,且易早熟收敛、效率低等问题,提出了一种基于改进离散型麻雀搜索算法的配电网恢复重构方法。利用配电网每生成一个环路需断开一个开关来保持其辐射状的思想,采用基于有序环矩阵的整数编码方式对多个环路内的开关状态进行编码。结合Sin混沌映射、Metropolis和扰动机制设计了改进的离散型麻雀搜索算法,并将其应用于配电网恢复重构模型的求解。大量仿真表明所提方法能有效实现恢复重构,使重构后配电网的供电可靠性和供电质量得到改善。

关键词：智能优化算法恢复重构离散型麻雀搜索算法有序环矩阵整数编码

Single-phase evolution path to new record efficiency of kesterite solar cells

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Science China Chemistry 2024年第2期67卷 420-421页

作者： Yixiong ji Fangyang Liu School of Metallurgy and Environment Central South UniversityChangsha410083China ARC Centre of Excellence in Exciton Science School of ChemistryUniversity of Melbourne3010MelbourneVictoriaAustralia

Over the past few years, there have been significant advancements in uncovering previously sealed records in the kesterite solar cell. This also has led to substantial growth marked by multiple groups achieving successive efficiency breakthroughs, shining a renewed spotlight on this promising photovoltaic material that had previously been overlooked due to its low efficiency.

关键词： breakthrough sealed successive

Adaptive neural dynamic-based hybrid control strategy for stable retrieval of tethered satellite systems

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Astrodynamics 2024年第2期8卷 261-269页

作者： Zhixiong ji Gefei Shi School of Aeronautics and Astronautics Sun Yat-sen UniversityGuangzhou 510275China Shenzhen Campus of Sun Yat-sen University Shenzhen 518107China Shenzhen Key Laboratory of Intelligent Microsatellite Constellation Shenzhen 518107China

This study proposes a novel adaptive neural dynamic-based hybrid control strategy for stable subsatellite retrieval of two-body tethered satellite *** retrieval speed is given analytically,ensuring a libration-free steady *** mitigate the potential libration motion,a general control input signal is generated by an adaptive neural-dynamic(AND)algorithm and executed by adjusting the retrieval speed and thruster on the *** address the limited retrieval speed and improve the control performance,the thruster controller is manipulated according to a novel advanced state fuzzy control law based on higher-order libration states,whereas the remaining control input is allocated to the speed *** Lyapunov stability of the control strategy is demonstrated *** simulations validate the proposed control strategy,demonstrating well-allocated control inputs for both controllers and good control performance.

关键词： tethered satellite system(TSS) stable retrieval hybrid control adaptive neural-dynamic (AND)control fuzzy control

Semi-derived Ringel-Hall algebras and Hall algebras of odd-periodic relative derived categories

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Science China Mathematics 2024年第8期67卷 1735-1760页

作者： ji Lin Liangang Peng Department of Mathematics and Statistics Fuyang Normal UniversityFuyang 236037China School of Mathematics Sichuan UniversityChengdu 610064China

Let t be a positive integer and A be a hereditary abelian category satisfying some finiteness *** define the semi-derived Ringel-Hall algebra of A from the category C_(Z/t)(A)of Z/t-graded complexes and obtain a natural basis of the semi-derived Ringel-Hall ***,we describe the semiderived Ringel-Hall algebra by the generators and defining *** particular,if t is an odd integer,we show an embedding of the derived Hall algebra of the odd-periodic relative derived category in the extended semi-derived Ringel-Hall algebra.

关键词： hereditary abelian categories the categories of Z/t-graded complexes semi-derived Ringel-Hall algebras derived Hall algebras

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Boosting electrocatalytic nitrate reduction to ammonia via Cu_(2)O/Cu(OH)_(2)heterostructures promoting electron transfer

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Nano Research 2024年第6期17卷 4898-4907页

作者： jing Geng Sihan ji Anhui Province International Research Center on Advanced Building Materials School of Materials Science and Chemical EngineeringAnhui Jianzhu UniversityHefei 230601China Anhui Province Key Laboratory of Advanced Building Materials Anhui Jianzhu UniversityHefei 230601China School of Energy Materials and Chemical Engineering Hefei UniversityHefei 230601China

Electrocatalytic nitrate(NO_(3)^(−))reduction to ammonia(NH_(3))offers a viable approach for sustainable NH_(3)production and environmental ***(Cu)possesses a distinctive electronic structure,which can augment the reaction kinetics of NO_(3)^(−)and impede hydrogen evolution reaction(HER),rendering it a promising contender for the electrosynthesis of NH_(3)from NO_(3)^(−).Nevertheless,the role of Cu_(2)O in copper-based catalysts still requires further investigation for a more comprehensive ***,the Cu_(2)O/Cu(OH)_(2)heterostructures are successfully fabricated through liquid laser irradiation using CuO nanoparticles as a *** and theoretical researches reveal that Cu_(2)O/Cu(OH)_(2)heterostructure exhibits enhanced electrocatalytic performance for NO_(3)^(−)to NH_(3)because Cu(OH)_(2)promotes electron transfer and reduces the valence state of Cu active site in Cu_(2)***−0.6 V(*** hydrogen electrode(RHE)),the NH_(3)yield reaches its maximum at 1630.66±29.72μg·h^(−1)·mgcat^(−1),while the maximum of Faraday efficiency(FE)is 76.95%±5.51%.This study expands the technical scope of copper-based catalyst preparation and enhances the understanding of the electrocatalytic mechanism of NO_(3)^(−)to NH_(3).

关键词： Cu_(2)O/Cu(OH)_(2)heterostructures electron transfer ammonia synthesis electrocatalysts nitrate

Salinity Acclimation Induces Reduced Energy Metabolism,Osmotic Pressure Regulation and Transcriptional Reprogramming in Hypotrichida Ciliate Gastrostyla setifera

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Journal of Ocean University of China 2024年第2期23卷 539-549页

作者： ji Xin BI Luping ZOU Songbao LI Wenlu ji Daode ZHANG Qianqian School of Ocean Yantai UniversityYantai 264005China Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China Zhejiang Institute of Freshwater Fisheries Huzhou 313001China Muping Coastal Environment Research Station Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264117China

Coastal and estuarine protists are frequently exposed to salinity *** the tolerance and stress responses of microalgae to salinity have been extensively studied,there have been scarce studies on the physiological response of heterotrophic protists to salinity *** this study,we investigated the physiological response of the heterotrophic ciliate Gastrostyla setifera to a salinity of 3,via a transcriptomic *** first transcriptome of genus Gastrostyla was obtained utilizing a group of manually isolated ciliate individuals(cells)and RNA-seq *** completeness of the transcriptome was *** expressed gene(DEG)analysis was performed among the transcriptomes of *** acclimated in saline water(salinity 3)and those cultured in fresh *** results demonstrated a significant alternation in gene transcription,in which the ciliate exhibits a transcripttomic acclimation in responding salinity *** up-regulated DEGs were enriched in the pathways of cytoskeleton proteins,membrane trafficking,protein kinases and protein *** may represent enhanced functions of ion transport,stress response and cell *** involved in energy metabolism and biosynthesis were markedly down-regulated,reflecting decreased cell ***,we detected significantly down-regulated genes involved in several pathways of amino acid catabolism,which may lead to accumulation of amino acids in the ciliate *** acid could act as compatible solutes in the cytoplasm to maintain the osmotic balance in saline ***,this work is an initial exploration to the molecular basis of the heterotrophic protist responding to salinity *** result sheds light on the mechanisms of enhancement of cell protection,reduction of cell activity,and osmotic pressure regulation in ciliates acclimated to salinity.

关键词： salinity stress heterotrophic protist ciliate Gastrostyla setifera transcriptome differentially expressed gene

Endogenous Trypsin Triggers Free Fluoride Release from Antarctic Krill(Euphausia superba)Cuticle

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Journal of Ocean University of China 2024年第3期23卷 766-774页

作者： PENG Yuanhuai ji Wei ji Hongwu HAN Zhiping ZHANG Shiqi WEN Yaping College of Food Science and Engineering Lingnan Normal UniversityZhanjiang 524048China College of Biological and Food Engineering Guangdong University of EducationGuangzhou 510303China Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety Guangdong Ocean UniversityZhanjiang 524088China College of Food Science and Technology Guangdong Ocean UniversityZhanjiang 524088China College of Continuing Education Lingnan Normal UniversityZhanjiang 524048China

During postmortem storage,fluoride in Antarctic krill can be enriched in the ***,as the most important digestive enzyme in Antarctic krill with a high activity in low temperature,plays a potential role in this *** this study,endogenous trypsin was purified and its properties were *** involvement of trypsin in the generation of free fluoride from Antarctic krill cuticle was *** microstructure before and after hydrolysis was compared with scanning electron microscopy,and the ash samples of the hydrolyzed Antarctic krill cuticle were analyzed with X-ray diffraction,Fourier transform infrared spectroscopy,and electron dispersive spectroscopy,*** spectrometry analysis and inhibition tests confirmed that the purified enzyme was endogenous *** of the present study indicated that trypsin digestion caused the increases of the concentrations of both fluoride ions and free amino N simultaneously,while the protein coated on the cuticle surface was dissolved ***,no compositional change was detected in the cuticle inorganic *** findings suggest that trypsin triggered free fluoride release from Antarctic krill *** addition,the kinetics of free fluoride release could be described by the equation C_(W)=(1-0.97^(-0.006t)-0.03e^(0.0558t))×337.53+*** present study improved the understanding of the role of trypsin in free fluoride release from Antarctic krill cuticle,facilitating future studies aimed at reducing the fluoride content in krill protein during Antarctic krill processing.

关键词： Antarctic krill cuticle fluoride trypsin

Coordination for a Closed-loop Supply Chain with Recycling Platform Considering Dynamic Setting

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Journal of Systems Science and Systems Engineering 2024年第4期33卷 425-451页

作者： Zehua Xiang Ting ji Lingfeng Dong School of Management Zhejiang UniversityHangzhou310058China School of Business Hangzhou City UniversityHangzhou310015China Alibaba Business College Hangzhou Normal UniversityHangzhou311121China

This paper presents a dynamic closed-loop supply chain(CLSC)model,incorporating a manufacturer,a retailer,and an internet recycling platform(IRP),utilizing differential game theory while considering the forgetting effect of *** model encompasses factors such as the quality level of used products and Big Data marketing(BDM),comparing optimal equilibriums under decentralized and cooperative decision *** effectively coordinate the dynamic CLSC at each time point,we propose a revenue-sharing and cost-sharing(RSCS)combined *** addition to ensuring reasonable sharing of revenues and costs,this contract allows the manufacturer to flexibly adjust wholesale prices for final products and transfer prices for used products in order to distribute profits appropriately and achieve Pareto optimality within the CLSC ***,our results indicate that there exists a threshold for Big Data marketing efficiency;high-efficiency BDM not only facilitates increased recycling on Internet platforms but also reduces unit recycling costs for ***,when implementing the combined contract,Big Data marketing efficiency does not impact the transfer price paid by manufacturers to Internet recycling platforms.

关键词： Big Data marketing differential game closed-loop supply chain coordination internet recycling platform

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电力市场不平衡资金综述:成因、对策与展望

电网技术 2023年第9期47卷 3586-3596页

作者：荆朝霞容语霞王一凡谢文周琳叶文圣季天瑶华南理工大学电力学院广东省广州市510641 中国电力科学研究院有限公司北京市海淀区100192 北京电力交易中心有限公司北京市西城区100031

电力市场中不平衡资金的处理是与定价、结算相关的一个问题,对市场的公平、效率都有很大的影响,在我国现货市场试运行中引起了较多的关注,但研究方面缺乏系统的、机理方面的分析。该文从市场主体、机制设计和多产品定价多个角度对产生... 详细信息

电力市场中不平衡资金的处理是与定价、结算相关的一个问题,对市场的公平、效率都有很大的影响,在我国现货市场试运行中引起了较多的关注,但研究方面缺乏系统的、机理方面的分析。该文从市场主体、机制设计和多产品定价多个角度对产生不平衡资金的原因进行分类,对实际市场中的不平衡资金分析其所属的类型;对多种类别的不平衡资金分析其产生机理,包括产品转换、价不等、量价不等、直接定价机制不满足参与约束等;从市场效率、社会福利等角度对不平衡资金的处理方法提出建议,并指出对我国电力市场的启示。

关键词：不平衡资金电力市场结算机制机制设计